Mercurial > hg > truffle
annotate src/cpu/ppc/vm/macroAssembler_ppc.cpp @ 18357:09550eb6ddfb
replace use of '==' with .equals()
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 12 Nov 2014 15:33:20 +0100 |
parents | 71a71b0bc844 |
children | f6bde7889409 |
rev | line source |
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1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
17807 | 3 * Copyright 2012, 2014 SAP AG. All rights reserved. |
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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5 * |
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6 * This code is free software; you can redistribute it and/or modify it |
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7 * under the terms of the GNU General Public License version 2 only, as |
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8 * published by the Free Software Foundation. |
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9 * |
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10 * This code is distributed in the hope that it will be useful, but WITHOUT |
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 * version 2 for more details (a copy is included in the LICENSE file that |
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14 * accompanied this code). |
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15 * |
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16 * You should have received a copy of the GNU General Public License version |
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17 * 2 along with this work; if not, write to the Free Software Foundation, |
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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19 * |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
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23 * |
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24 */ |
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25 |
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26 #include "precompiled.hpp" |
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27 #include "asm/macroAssembler.inline.hpp" |
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28 #include "compiler/disassembler.hpp" |
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29 #include "gc_interface/collectedHeap.inline.hpp" |
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30 #include "interpreter/interpreter.hpp" |
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31 #include "memory/cardTableModRefBS.hpp" |
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32 #include "memory/resourceArea.hpp" |
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33 #include "prims/methodHandles.hpp" |
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34 #include "runtime/biasedLocking.hpp" |
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35 #include "runtime/interfaceSupport.hpp" |
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36 #include "runtime/objectMonitor.hpp" |
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37 #include "runtime/os.hpp" |
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38 #include "runtime/sharedRuntime.hpp" |
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39 #include "runtime/stubRoutines.hpp" |
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40 #include "utilities/macros.hpp" |
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41 #if INCLUDE_ALL_GCS |
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42 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
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43 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" |
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44 #include "gc_implementation/g1/heapRegion.hpp" |
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45 #endif // INCLUDE_ALL_GCS |
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46 |
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47 #ifdef PRODUCT |
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48 #define BLOCK_COMMENT(str) // nothing |
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49 #else |
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50 #define BLOCK_COMMENT(str) block_comment(str) |
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51 #endif |
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52 |
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53 #ifdef ASSERT |
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54 // On RISC, there's no benefit to verifying instruction boundaries. |
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55 bool AbstractAssembler::pd_check_instruction_mark() { return false; } |
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56 #endif |
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57 |
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58 void MacroAssembler::ld_largeoffset_unchecked(Register d, int si31, Register a, int emit_filler_nop) { |
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59 assert(Assembler::is_simm(si31, 31) && si31 >= 0, "si31 out of range"); |
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60 if (Assembler::is_simm(si31, 16)) { |
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61 ld(d, si31, a); |
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62 if (emit_filler_nop) nop(); |
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63 } else { |
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64 const int hi = MacroAssembler::largeoffset_si16_si16_hi(si31); |
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65 const int lo = MacroAssembler::largeoffset_si16_si16_lo(si31); |
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66 addis(d, a, hi); |
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67 ld(d, lo, d); |
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68 } |
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69 } |
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70 |
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71 void MacroAssembler::ld_largeoffset(Register d, int si31, Register a, int emit_filler_nop) { |
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72 assert_different_registers(d, a); |
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73 ld_largeoffset_unchecked(d, si31, a, emit_filler_nop); |
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74 } |
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75 |
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76 void MacroAssembler::load_sized_value(Register dst, RegisterOrConstant offs, Register base, |
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77 size_t size_in_bytes, bool is_signed) { |
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78 switch (size_in_bytes) { |
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79 case 8: ld(dst, offs, base); break; |
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80 case 4: is_signed ? lwa(dst, offs, base) : lwz(dst, offs, base); break; |
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81 case 2: is_signed ? lha(dst, offs, base) : lhz(dst, offs, base); break; |
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82 case 1: lbz(dst, offs, base); if (is_signed) extsb(dst, dst); break; // lba doesn't exist :( |
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83 default: ShouldNotReachHere(); |
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84 } |
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85 } |
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86 |
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87 void MacroAssembler::store_sized_value(Register dst, RegisterOrConstant offs, Register base, |
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88 size_t size_in_bytes) { |
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89 switch (size_in_bytes) { |
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90 case 8: std(dst, offs, base); break; |
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91 case 4: stw(dst, offs, base); break; |
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92 case 2: sth(dst, offs, base); break; |
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93 case 1: stb(dst, offs, base); break; |
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94 default: ShouldNotReachHere(); |
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95 } |
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96 } |
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97 |
14445 | 98 void MacroAssembler::align(int modulus, int max, int rem) { |
99 int padding = (rem + modulus - (offset() % modulus)) % modulus; | |
100 if (padding > max) return; | |
101 for (int c = (padding >> 2); c > 0; --c) { nop(); } | |
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102 } |
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103 |
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104 // Issue instructions that calculate given TOC from global TOC. |
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105 void MacroAssembler::calculate_address_from_global_toc(Register dst, address addr, bool hi16, bool lo16, |
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106 bool add_relocation, bool emit_dummy_addr) { |
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107 int offset = -1; |
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108 if (emit_dummy_addr) { |
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109 offset = -128; // dummy address |
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110 } else if (addr != (address)(intptr_t)-1) { |
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111 offset = MacroAssembler::offset_to_global_toc(addr); |
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112 } |
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113 |
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114 if (hi16) { |
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115 addis(dst, R29, MacroAssembler::largeoffset_si16_si16_hi(offset)); |
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116 } |
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117 if (lo16) { |
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118 if (add_relocation) { |
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119 // Relocate at the addi to avoid confusion with a load from the method's TOC. |
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120 relocate(internal_word_Relocation::spec(addr)); |
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121 } |
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122 addi(dst, dst, MacroAssembler::largeoffset_si16_si16_lo(offset)); |
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123 } |
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124 } |
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125 |
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126 int MacroAssembler::patch_calculate_address_from_global_toc_at(address a, address bound, address addr) { |
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127 const int offset = MacroAssembler::offset_to_global_toc(addr); |
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128 |
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129 const address inst2_addr = a; |
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130 const int inst2 = *(int *)inst2_addr; |
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131 |
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132 // The relocation points to the second instruction, the addi, |
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133 // and the addi reads and writes the same register dst. |
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134 const int dst = inv_rt_field(inst2); |
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135 assert(is_addi(inst2) && inv_ra_field(inst2) == dst, "must be addi reading and writing dst"); |
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136 |
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137 // Now, find the preceding addis which writes to dst. |
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138 int inst1 = 0; |
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139 address inst1_addr = inst2_addr - BytesPerInstWord; |
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140 while (inst1_addr >= bound) { |
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141 inst1 = *(int *) inst1_addr; |
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142 if (is_addis(inst1) && inv_rt_field(inst1) == dst) { |
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143 // Stop, found the addis which writes dst. |
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144 break; |
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145 } |
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146 inst1_addr -= BytesPerInstWord; |
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147 } |
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148 |
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149 assert(is_addis(inst1) && inv_ra_field(inst1) == 29 /* R29 */, "source must be global TOC"); |
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150 set_imm((int *)inst1_addr, MacroAssembler::largeoffset_si16_si16_hi(offset)); |
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151 set_imm((int *)inst2_addr, MacroAssembler::largeoffset_si16_si16_lo(offset)); |
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152 return (int)((intptr_t)addr - (intptr_t)inst1_addr); |
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153 } |
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154 |
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155 address MacroAssembler::get_address_of_calculate_address_from_global_toc_at(address a, address bound) { |
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156 const address inst2_addr = a; |
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157 const int inst2 = *(int *)inst2_addr; |
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158 |
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159 // The relocation points to the second instruction, the addi, |
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160 // and the addi reads and writes the same register dst. |
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161 const int dst = inv_rt_field(inst2); |
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162 assert(is_addi(inst2) && inv_ra_field(inst2) == dst, "must be addi reading and writing dst"); |
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163 |
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164 // Now, find the preceding addis which writes to dst. |
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165 int inst1 = 0; |
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166 address inst1_addr = inst2_addr - BytesPerInstWord; |
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167 while (inst1_addr >= bound) { |
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168 inst1 = *(int *) inst1_addr; |
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169 if (is_addis(inst1) && inv_rt_field(inst1) == dst) { |
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170 // stop, found the addis which writes dst |
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171 break; |
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172 } |
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173 inst1_addr -= BytesPerInstWord; |
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174 } |
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175 |
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176 assert(is_addis(inst1) && inv_ra_field(inst1) == 29 /* R29 */, "source must be global TOC"); |
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177 |
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178 int offset = (get_imm(inst1_addr, 0) << 16) + get_imm(inst2_addr, 0); |
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179 // -1 is a special case |
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180 if (offset == -1) { |
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181 return (address)(intptr_t)-1; |
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182 } else { |
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183 return global_toc() + offset; |
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184 } |
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185 } |
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186 |
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187 #ifdef _LP64 |
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188 // Patch compressed oops or klass constants. |
14445 | 189 // Assembler sequence is |
190 // 1) compressed oops: | |
191 // lis rx = const.hi | |
192 // ori rx = rx | const.lo | |
193 // 2) compressed klass: | |
194 // lis rx = const.hi | |
195 // clrldi rx = rx & 0xFFFFffff // clearMS32b, optional | |
196 // ori rx = rx | const.lo | |
197 // Clrldi will be passed by. | |
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198 int MacroAssembler::patch_set_narrow_oop(address a, address bound, narrowOop data) { |
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199 assert(UseCompressedOops, "Should only patch compressed oops"); |
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200 |
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201 const address inst2_addr = a; |
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202 const int inst2 = *(int *)inst2_addr; |
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203 |
14445 | 204 // The relocation points to the second instruction, the ori, |
205 // and the ori reads and writes the same register dst. | |
206 const int dst = inv_rta_field(inst2); | |
17793 | 207 assert(is_ori(inst2) && inv_rs_field(inst2) == dst, "must be ori reading and writing dst"); |
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208 // Now, find the preceding addis which writes to dst. |
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209 int inst1 = 0; |
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210 address inst1_addr = inst2_addr - BytesPerInstWord; |
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211 bool inst1_found = false; |
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212 while (inst1_addr >= bound) { |
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213 inst1 = *(int *)inst1_addr; |
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214 if (is_lis(inst1) && inv_rs_field(inst1) == dst) { inst1_found = true; break; } |
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215 inst1_addr -= BytesPerInstWord; |
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216 } |
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217 assert(inst1_found, "inst is not lis"); |
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218 |
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219 int xc = (data >> 16) & 0xffff; |
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220 int xd = (data >> 0) & 0xffff; |
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221 |
14445 | 222 set_imm((int *)inst1_addr, (short)(xc)); // see enc_load_con_narrow_hi/_lo |
17793 | 223 set_imm((int *)inst2_addr, (xd)); // unsigned int |
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224 return (int)((intptr_t)inst2_addr - (intptr_t)inst1_addr); |
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225 } |
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226 |
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227 // Get compressed oop or klass constant. |
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228 narrowOop MacroAssembler::get_narrow_oop(address a, address bound) { |
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229 assert(UseCompressedOops, "Should only patch compressed oops"); |
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230 |
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231 const address inst2_addr = a; |
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232 const int inst2 = *(int *)inst2_addr; |
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233 |
14445 | 234 // The relocation points to the second instruction, the ori, |
235 // and the ori reads and writes the same register dst. | |
236 const int dst = inv_rta_field(inst2); | |
17793 | 237 assert(is_ori(inst2) && inv_rs_field(inst2) == dst, "must be ori reading and writing dst"); |
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238 // Now, find the preceding lis which writes to dst. |
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239 int inst1 = 0; |
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240 address inst1_addr = inst2_addr - BytesPerInstWord; |
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241 bool inst1_found = false; |
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242 |
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243 while (inst1_addr >= bound) { |
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244 inst1 = *(int *) inst1_addr; |
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245 if (is_lis(inst1) && inv_rs_field(inst1) == dst) { inst1_found = true; break;} |
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246 inst1_addr -= BytesPerInstWord; |
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247 } |
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248 assert(inst1_found, "inst is not lis"); |
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249 |
14445 | 250 uint xl = ((unsigned int) (get_imm(inst2_addr, 0) & 0xffff)); |
251 uint xh = (((get_imm(inst1_addr, 0)) & 0xffff) << 16); | |
252 | |
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253 return (int) (xl | xh); |
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254 } |
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255 #endif // _LP64 |
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256 |
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257 void MacroAssembler::load_const_from_method_toc(Register dst, AddressLiteral& a, Register toc) { |
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258 int toc_offset = 0; |
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259 // Use RelocationHolder::none for the constant pool entry, otherwise |
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260 // we will end up with a failing NativeCall::verify(x) where x is |
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261 // the address of the constant pool entry. |
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262 // FIXME: We should insert relocation information for oops at the constant |
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263 // pool entries instead of inserting it at the loads; patching of a constant |
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264 // pool entry should be less expensive. |
14445 | 265 address oop_address = address_constant((address)a.value(), RelocationHolder::none); |
266 // Relocate at the pc of the load. | |
267 relocate(a.rspec()); | |
268 toc_offset = (int)(oop_address - code()->consts()->start()); | |
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269 ld_largeoffset_unchecked(dst, toc_offset, toc, true); |
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270 } |
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271 |
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272 bool MacroAssembler::is_load_const_from_method_toc_at(address a) { |
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273 const address inst1_addr = a; |
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274 const int inst1 = *(int *)inst1_addr; |
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275 |
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276 // The relocation points to the ld or the addis. |
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277 return (is_ld(inst1)) || |
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278 (is_addis(inst1) && inv_ra_field(inst1) != 0); |
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279 } |
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280 |
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281 int MacroAssembler::get_offset_of_load_const_from_method_toc_at(address a) { |
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282 assert(is_load_const_from_method_toc_at(a), "must be load_const_from_method_toc"); |
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283 |
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284 const address inst1_addr = a; |
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285 const int inst1 = *(int *)inst1_addr; |
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286 |
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287 if (is_ld(inst1)) { |
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288 return inv_d1_field(inst1); |
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289 } else if (is_addis(inst1)) { |
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290 const int dst = inv_rt_field(inst1); |
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291 |
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292 // Now, find the succeeding ld which reads and writes to dst. |
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293 address inst2_addr = inst1_addr + BytesPerInstWord; |
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294 int inst2 = 0; |
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295 while (true) { |
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296 inst2 = *(int *) inst2_addr; |
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297 if (is_ld(inst2) && inv_ra_field(inst2) == dst && inv_rt_field(inst2) == dst) { |
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298 // Stop, found the ld which reads and writes dst. |
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299 break; |
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300 } |
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301 inst2_addr += BytesPerInstWord; |
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302 } |
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303 return (inv_d1_field(inst1) << 16) + inv_d1_field(inst2); |
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304 } |
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305 ShouldNotReachHere(); |
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306 return 0; |
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307 } |
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308 |
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309 // Get the constant from a `load_const' sequence. |
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310 long MacroAssembler::get_const(address a) { |
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311 assert(is_load_const_at(a), "not a load of a constant"); |
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312 const int *p = (const int*) a; |
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313 unsigned long x = (((unsigned long) (get_imm(a,0) & 0xffff)) << 48); |
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314 if (is_ori(*(p+1))) { |
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315 x |= (((unsigned long) (get_imm(a,1) & 0xffff)) << 32); |
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316 x |= (((unsigned long) (get_imm(a,3) & 0xffff)) << 16); |
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317 x |= (((unsigned long) (get_imm(a,4) & 0xffff))); |
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318 } else if (is_lis(*(p+1))) { |
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319 x |= (((unsigned long) (get_imm(a,2) & 0xffff)) << 32); |
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320 x |= (((unsigned long) (get_imm(a,1) & 0xffff)) << 16); |
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321 x |= (((unsigned long) (get_imm(a,3) & 0xffff))); |
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322 } else { |
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|
323 ShouldNotReachHere(); |
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324 return (long) 0; |
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|
325 } |
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|
326 return (long) x; |
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|
327 } |
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|
328 |
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329 // Patch the 64 bit constant of a `load_const' sequence. This is a low |
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330 // level procedure. It neither flushes the instruction cache nor is it |
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331 // mt safe. |
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332 void MacroAssembler::patch_const(address a, long x) { |
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333 assert(is_load_const_at(a), "not a load of a constant"); |
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334 int *p = (int*) a; |
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|
335 if (is_ori(*(p+1))) { |
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336 set_imm(0 + p, (x >> 48) & 0xffff); |
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337 set_imm(1 + p, (x >> 32) & 0xffff); |
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338 set_imm(3 + p, (x >> 16) & 0xffff); |
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339 set_imm(4 + p, x & 0xffff); |
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340 } else if (is_lis(*(p+1))) { |
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341 set_imm(0 + p, (x >> 48) & 0xffff); |
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342 set_imm(2 + p, (x >> 32) & 0xffff); |
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343 set_imm(1 + p, (x >> 16) & 0xffff); |
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344 set_imm(3 + p, x & 0xffff); |
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|
345 } else { |
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346 ShouldNotReachHere(); |
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|
347 } |
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|
348 } |
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349 |
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350 AddressLiteral MacroAssembler::allocate_metadata_address(Metadata* obj) { |
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351 assert(oop_recorder() != NULL, "this assembler needs a Recorder"); |
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352 int index = oop_recorder()->allocate_metadata_index(obj); |
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353 RelocationHolder rspec = metadata_Relocation::spec(index); |
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354 return AddressLiteral((address)obj, rspec); |
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|
355 } |
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|
356 |
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357 AddressLiteral MacroAssembler::constant_metadata_address(Metadata* obj) { |
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358 assert(oop_recorder() != NULL, "this assembler needs a Recorder"); |
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359 int index = oop_recorder()->find_index(obj); |
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360 RelocationHolder rspec = metadata_Relocation::spec(index); |
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|
361 return AddressLiteral((address)obj, rspec); |
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|
362 } |
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|
363 |
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|
364 AddressLiteral MacroAssembler::allocate_oop_address(jobject obj) { |
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|
365 assert(oop_recorder() != NULL, "this assembler needs an OopRecorder"); |
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366 int oop_index = oop_recorder()->allocate_oop_index(obj); |
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367 return AddressLiteral(address(obj), oop_Relocation::spec(oop_index)); |
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|
368 } |
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|
369 |
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|
370 AddressLiteral MacroAssembler::constant_oop_address(jobject obj) { |
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|
371 assert(oop_recorder() != NULL, "this assembler needs an OopRecorder"); |
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372 int oop_index = oop_recorder()->find_index(obj); |
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373 return AddressLiteral(address(obj), oop_Relocation::spec(oop_index)); |
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|
374 } |
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|
375 |
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|
376 RegisterOrConstant MacroAssembler::delayed_value_impl(intptr_t* delayed_value_addr, |
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|
377 Register tmp, int offset) { |
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|
378 intptr_t value = *delayed_value_addr; |
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|
379 if (value != 0) { |
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|
380 return RegisterOrConstant(value + offset); |
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|
381 } |
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|
382 |
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parents:
diff
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|
383 // Load indirectly to solve generation ordering problem. |
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|
384 // static address, no relocation |
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|
385 int simm16_offset = load_const_optimized(tmp, delayed_value_addr, noreg, true); |
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|
386 ld(tmp, simm16_offset, tmp); // must be aligned ((xa & 3) == 0) |
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|
387 |
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|
388 if (offset != 0) { |
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parents:
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|
389 addi(tmp, tmp, offset); |
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parents:
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|
390 } |
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|
391 |
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|
392 return RegisterOrConstant(tmp); |
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|
393 } |
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|
394 |
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|
395 #ifndef PRODUCT |
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|
396 void MacroAssembler::pd_print_patched_instruction(address branch) { |
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|
397 Unimplemented(); // TODO: PPC port |
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|
398 } |
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|
399 #endif // ndef PRODUCT |
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|
400 |
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parents:
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|
401 // Conditional far branch for destinations encodable in 24+2 bits. |
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|
402 void MacroAssembler::bc_far(int boint, int biint, Label& dest, int optimize) { |
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diff
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|
403 |
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|
404 // If requested by flag optimize, relocate the bc_far as a |
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diff
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|
405 // runtime_call and prepare for optimizing it when the code gets |
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parents:
diff
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|
406 // relocated. |
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diff
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|
407 if (optimize == bc_far_optimize_on_relocate) { |
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parents:
diff
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|
408 relocate(relocInfo::runtime_call_type); |
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parents:
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|
409 } |
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parents:
diff
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|
410 |
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parents:
diff
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|
411 // variant 2: |
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parents:
diff
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|
412 // |
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parents:
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|
413 // b!cxx SKIP |
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parents:
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|
414 // bxx DEST |
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parents:
diff
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|
415 // SKIP: |
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parents:
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|
416 // |
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parents:
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|
417 |
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418 const int opposite_boint = add_bhint_to_boint(opposite_bhint(inv_boint_bhint(boint)), |
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419 opposite_bcond(inv_boint_bcond(boint))); |
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parents:
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|
420 |
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parents:
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|
421 // We emit two branches. |
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parents:
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|
422 // First, a conditional branch which jumps around the far branch. |
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parents:
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|
423 const address not_taken_pc = pc() + 2 * BytesPerInstWord; |
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parents:
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|
424 const address bc_pc = pc(); |
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parents:
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|
425 bc(opposite_boint, biint, not_taken_pc); |
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parents:
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|
426 |
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parents:
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|
427 const int bc_instr = *(int*)bc_pc; |
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parents:
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|
428 assert(not_taken_pc == (address)inv_bd_field(bc_instr, (intptr_t)bc_pc), "postcondition"); |
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|
429 assert(opposite_boint == inv_bo_field(bc_instr), "postcondition"); |
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|
430 assert(boint == add_bhint_to_boint(opposite_bhint(inv_boint_bhint(inv_bo_field(bc_instr))), |
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parents:
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|
431 opposite_bcond(inv_boint_bcond(inv_bo_field(bc_instr)))), |
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parents:
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|
432 "postcondition"); |
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parents:
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|
433 assert(biint == inv_bi_field(bc_instr), "postcondition"); |
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parents:
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changeset
|
434 |
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parents:
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changeset
|
435 // Second, an unconditional far branch which jumps to dest. |
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parents:
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changeset
|
436 // Note: target(dest) remembers the current pc (see CodeSection::target) |
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parents:
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437 // and returns the current pc if the label is not bound yet; when |
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changeset
|
438 // the label gets bound, the unconditional far branch will be patched. |
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parents:
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|
439 const address target_pc = target(dest); |
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parents:
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changeset
|
440 const address b_pc = pc(); |
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parents:
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|
441 b(target_pc); |
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parents:
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changeset
|
442 |
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parents:
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|
443 assert(not_taken_pc == pc(), "postcondition"); |
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parents:
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|
444 assert(dest.is_bound() || target_pc == b_pc, "postcondition"); |
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parents:
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|
445 } |
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parents:
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|
446 |
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parents:
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|
447 bool MacroAssembler::is_bc_far_at(address instruction_addr) { |
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|
448 return is_bc_far_variant1_at(instruction_addr) || |
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|
449 is_bc_far_variant2_at(instruction_addr) || |
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parents:
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|
450 is_bc_far_variant3_at(instruction_addr); |
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parents:
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|
451 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
452 |
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parents:
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changeset
|
453 address MacroAssembler::get_dest_of_bc_far_at(address instruction_addr) { |
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parents:
diff
changeset
|
454 if (is_bc_far_variant1_at(instruction_addr)) { |
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parents:
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changeset
|
455 const address instruction_1_addr = instruction_addr; |
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parents:
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changeset
|
456 const int instruction_1 = *(int*)instruction_1_addr; |
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parents:
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|
457 return (address)inv_bd_field(instruction_1, (intptr_t)instruction_1_addr); |
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|
458 } else if (is_bc_far_variant2_at(instruction_addr)) { |
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parents:
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|
459 const address instruction_2_addr = instruction_addr + 4; |
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parents:
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|
460 return bxx_destination(instruction_2_addr); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
461 } else if (is_bc_far_variant3_at(instruction_addr)) { |
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parents:
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|
462 return instruction_addr + 8; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
463 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
464 // variant 4 ??? |
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parents:
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changeset
|
465 ShouldNotReachHere(); |
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parents:
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|
466 return NULL; |
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parents:
diff
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|
467 } |
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parents:
diff
changeset
|
468 void MacroAssembler::set_dest_of_bc_far_at(address instruction_addr, address dest) { |
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parents:
diff
changeset
|
469 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
470 if (is_bc_far_variant3_at(instruction_addr)) { |
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parents:
diff
changeset
|
471 // variant 3, far cond branch to the next instruction, already patched to nops: |
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parents:
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|
472 // |
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parents:
diff
changeset
|
473 // nop |
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parents:
diff
changeset
|
474 // endgroup |
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parents:
diff
changeset
|
475 // SKIP/DEST: |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
476 // |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
477 return; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
478 } |
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parents:
diff
changeset
|
479 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
480 // first, extract boint and biint from the current branch |
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parents:
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|
481 int boint = 0; |
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parents:
diff
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|
482 int biint = 0; |
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parents:
diff
changeset
|
483 |
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parents:
diff
changeset
|
484 ResourceMark rm; |
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parents:
diff
changeset
|
485 const int code_size = 2 * BytesPerInstWord; |
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parents:
diff
changeset
|
486 CodeBuffer buf(instruction_addr, code_size); |
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parents:
diff
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|
487 MacroAssembler masm(&buf); |
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parents:
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|
488 if (is_bc_far_variant2_at(instruction_addr) && dest == instruction_addr + 8) { |
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parents:
diff
changeset
|
489 // Far branch to next instruction: Optimize it by patching nops (produce variant 3). |
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parents:
diff
changeset
|
490 masm.nop(); |
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parents:
diff
changeset
|
491 masm.endgroup(); |
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parents:
diff
changeset
|
492 } else { |
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parents:
diff
changeset
|
493 if (is_bc_far_variant1_at(instruction_addr)) { |
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parents:
diff
changeset
|
494 // variant 1, the 1st instruction contains the destination address: |
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parents:
diff
changeset
|
495 // |
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parents:
diff
changeset
|
496 // bcxx DEST |
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parents:
diff
changeset
|
497 // endgroup |
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parents:
diff
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|
498 // |
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parents:
diff
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|
499 const int instruction_1 = *(int*)(instruction_addr); |
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parents:
diff
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|
500 boint = inv_bo_field(instruction_1); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
501 biint = inv_bi_field(instruction_1); |
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parents:
diff
changeset
|
502 } else if (is_bc_far_variant2_at(instruction_addr)) { |
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parents:
diff
changeset
|
503 // variant 2, the 2nd instruction contains the destination address: |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
504 // |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
505 // b!cxx SKIP |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
506 // bxx DEST |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
507 // SKIP: |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
508 // |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
509 const int instruction_1 = *(int*)(instruction_addr); |
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parents:
diff
changeset
|
510 boint = add_bhint_to_boint(opposite_bhint(inv_boint_bhint(inv_bo_field(instruction_1))), |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
511 opposite_bcond(inv_boint_bcond(inv_bo_field(instruction_1)))); |
ec28f9c041ff
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parents:
diff
changeset
|
512 biint = inv_bi_field(instruction_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
513 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
514 // variant 4??? |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
515 ShouldNotReachHere(); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
516 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
517 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
518 // second, set the new branch destination and optimize the code |
ec28f9c041ff
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parents:
diff
changeset
|
519 if (dest != instruction_addr + 4 && // the bc_far is still unbound! |
ec28f9c041ff
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parents:
diff
changeset
|
520 masm.is_within_range_of_bcxx(dest, instruction_addr)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
521 // variant 1: |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
522 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
523 // bcxx DEST |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
524 // endgroup |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
525 // |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
526 masm.bc(boint, biint, dest); |
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parents:
diff
changeset
|
527 masm.endgroup(); |
ec28f9c041ff
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parents:
diff
changeset
|
528 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
529 // variant 2: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
530 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
531 // b!cxx SKIP |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
532 // bxx DEST |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
533 // SKIP: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
534 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
535 const int opposite_boint = add_bhint_to_boint(opposite_bhint(inv_boint_bhint(boint)), |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
536 opposite_bcond(inv_boint_bcond(boint))); |
ec28f9c041ff
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parents:
diff
changeset
|
537 const address not_taken_pc = masm.pc() + 2 * BytesPerInstWord; |
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parents:
diff
changeset
|
538 masm.bc(opposite_boint, biint, not_taken_pc); |
ec28f9c041ff
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parents:
diff
changeset
|
539 masm.b(dest); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
540 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
541 } |
14445 | 542 ICache::ppc64_flush_icache_bytes(instruction_addr, code_size); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
543 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
544 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
545 // Emit a NOT mt-safe patchable 64 bit absolute call/jump. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
546 void MacroAssembler::bxx64_patchable(address dest, relocInfo::relocType rt, bool link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
547 // get current pc |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
548 uint64_t start_pc = (uint64_t) pc(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
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|
549 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
550 const address pc_of_bl = (address) (start_pc + (6*BytesPerInstWord)); // bl is last |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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|
551 const address pc_of_b = (address) (start_pc + (0*BytesPerInstWord)); // b is first |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
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|
552 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
553 // relocate here |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
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|
554 if (rt != relocInfo::none) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
555 relocate(rt); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
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|
556 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
557 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
558 if ( ReoptimizeCallSequences && |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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|
559 (( link && is_within_range_of_b(dest, pc_of_bl)) || |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
560 (!link && is_within_range_of_b(dest, pc_of_b)))) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
561 // variant 2: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
562 // Emit an optimized, pc-relative call/jump. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
563 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
564 if (link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
565 // some padding |
ec28f9c041ff
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goetz
parents:
diff
changeset
|
566 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
567 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
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|
568 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
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|
569 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
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|
570 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
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|
571 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
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|
572 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
573 // do the call |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
574 assert(pc() == pc_of_bl, "just checking"); |
ec28f9c041ff
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goetz
parents:
diff
changeset
|
575 bl(dest, relocInfo::none); |
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goetz
parents:
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|
576 } else { |
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goetz
parents:
diff
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|
577 // do the jump |
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parents:
diff
changeset
|
578 assert(pc() == pc_of_b, "just checking"); |
ec28f9c041ff
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goetz
parents:
diff
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|
579 b(dest, relocInfo::none); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
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|
580 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
581 // some padding |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
582 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
583 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
584 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
585 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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|
586 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
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|
587 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
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|
588 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
589 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
590 // Assert that we can identify the emitted call/jump. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
591 assert(is_bxx64_patchable_variant2_at((address)start_pc, link), |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
592 "can't identify emitted call"); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
593 } else { |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
594 // variant 1: |
17803 | 595 #if defined(ABI_ELFv2) |
596 nop(); | |
597 calculate_address_from_global_toc(R12, dest, true, true, false); | |
598 mtctr(R12); | |
599 nop(); | |
600 nop(); | |
601 #else | |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
602 mr(R0, R11); // spill R11 -> R0. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
603 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
604 // Load the destination address into CTR, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
605 // calculate destination relative to global toc. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
606 calculate_address_from_global_toc(R11, dest, true, true, false); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
607 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
608 mtctr(R11); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
609 mr(R11, R0); // spill R11 <- R0. |
ec28f9c041ff
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goetz
parents:
diff
changeset
|
610 nop(); |
17803 | 611 #endif |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
612 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
613 // do the call/jump |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
614 if (link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
615 bctrl(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
616 } else{ |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
617 bctr(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
618 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
619 // Assert that we can identify the emitted call/jump. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
620 assert(is_bxx64_patchable_variant1b_at((address)start_pc, link), |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
621 "can't identify emitted call"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
622 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
623 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
624 // Assert that we can identify the emitted call/jump. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
625 assert(is_bxx64_patchable_at((address)start_pc, link), |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
626 "can't identify emitted call"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
627 assert(get_dest_of_bxx64_patchable_at((address)start_pc, link) == dest, |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
628 "wrong encoding of dest address"); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
629 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
630 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
631 // Identify a bxx64_patchable instruction. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
632 bool MacroAssembler::is_bxx64_patchable_at(address instruction_addr, bool link) { |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
633 return is_bxx64_patchable_variant1b_at(instruction_addr, link) |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
634 //|| is_bxx64_patchable_variant1_at(instruction_addr, link) |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
635 || is_bxx64_patchable_variant2_at(instruction_addr, link); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
636 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
637 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
638 // Does the call64_patchable instruction use a pc-relative encoding of |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
639 // the call destination? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
640 bool MacroAssembler::is_bxx64_patchable_pcrelative_at(address instruction_addr, bool link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
641 // variant 2 is pc-relative |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
642 return is_bxx64_patchable_variant2_at(instruction_addr, link); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
643 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
644 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
645 // Identify variant 1. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
646 bool MacroAssembler::is_bxx64_patchable_variant1_at(address instruction_addr, bool link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
647 unsigned int* instr = (unsigned int*) instruction_addr; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
648 return (link ? is_bctrl(instr[6]) : is_bctr(instr[6])) // bctr[l] |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
649 && is_mtctr(instr[5]) // mtctr |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
650 && is_load_const_at(instruction_addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
651 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
652 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
653 // Identify variant 1b: load destination relative to global toc. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
654 bool MacroAssembler::is_bxx64_patchable_variant1b_at(address instruction_addr, bool link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
655 unsigned int* instr = (unsigned int*) instruction_addr; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
656 return (link ? is_bctrl(instr[6]) : is_bctr(instr[6])) // bctr[l] |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
657 && is_mtctr(instr[3]) // mtctr |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
658 && is_calculate_address_from_global_toc_at(instruction_addr + 2*BytesPerInstWord, instruction_addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
659 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
660 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
661 // Identify variant 2. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
662 bool MacroAssembler::is_bxx64_patchable_variant2_at(address instruction_addr, bool link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
663 unsigned int* instr = (unsigned int*) instruction_addr; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
664 if (link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
665 return is_bl (instr[6]) // bl dest is last |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
666 && is_nop(instr[0]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
667 && is_nop(instr[1]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
668 && is_nop(instr[2]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
669 && is_nop(instr[3]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
670 && is_nop(instr[4]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
671 && is_nop(instr[5]); // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
672 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
673 return is_b (instr[0]) // b dest is first |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
674 && is_nop(instr[1]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
675 && is_nop(instr[2]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
676 && is_nop(instr[3]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
677 && is_nop(instr[4]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
678 && is_nop(instr[5]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
679 && is_nop(instr[6]); // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
680 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
681 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
682 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
683 // Set dest address of a bxx64_patchable instruction. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
684 void MacroAssembler::set_dest_of_bxx64_patchable_at(address instruction_addr, address dest, bool link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
685 ResourceMark rm; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
686 int code_size = MacroAssembler::bxx64_patchable_size; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
687 CodeBuffer buf(instruction_addr, code_size); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
688 MacroAssembler masm(&buf); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
689 masm.bxx64_patchable(dest, relocInfo::none, link); |
14445 | 690 ICache::ppc64_flush_icache_bytes(instruction_addr, code_size); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
691 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
692 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
693 // Get dest address of a bxx64_patchable instruction. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
694 address MacroAssembler::get_dest_of_bxx64_patchable_at(address instruction_addr, bool link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
695 if (is_bxx64_patchable_variant1_at(instruction_addr, link)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
696 return (address) (unsigned long) get_const(instruction_addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
697 } else if (is_bxx64_patchable_variant2_at(instruction_addr, link)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
698 unsigned int* instr = (unsigned int*) instruction_addr; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
699 if (link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
700 const int instr_idx = 6; // bl is last |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
701 int branchoffset = branch_destination(instr[instr_idx], 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
702 return instruction_addr + branchoffset + instr_idx*BytesPerInstWord; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
703 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
704 const int instr_idx = 0; // b is first |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
705 int branchoffset = branch_destination(instr[instr_idx], 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
706 return instruction_addr + branchoffset + instr_idx*BytesPerInstWord; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
707 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
708 // Load dest relative to global toc. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
709 } else if (is_bxx64_patchable_variant1b_at(instruction_addr, link)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
710 return get_address_of_calculate_address_from_global_toc_at(instruction_addr + 2*BytesPerInstWord, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
711 instruction_addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
712 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
713 ShouldNotReachHere(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
714 return NULL; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
715 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
716 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
717 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
718 // Uses ordering which corresponds to ABI: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
719 // _savegpr0_14: std r14,-144(r1) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
720 // _savegpr0_15: std r15,-136(r1) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
721 // _savegpr0_16: std r16,-128(r1) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
722 void MacroAssembler::save_nonvolatile_gprs(Register dst, int offset) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
723 std(R14, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
724 std(R15, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
725 std(R16, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
726 std(R17, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
727 std(R18, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
728 std(R19, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
729 std(R20, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
730 std(R21, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
731 std(R22, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
732 std(R23, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
733 std(R24, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
734 std(R25, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
735 std(R26, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
736 std(R27, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
737 std(R28, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
738 std(R29, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
739 std(R30, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
740 std(R31, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
741 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
742 stfd(F14, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
743 stfd(F15, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
744 stfd(F16, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
745 stfd(F17, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
746 stfd(F18, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
747 stfd(F19, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
748 stfd(F20, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
749 stfd(F21, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
750 stfd(F22, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
751 stfd(F23, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
752 stfd(F24, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
753 stfd(F25, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
754 stfd(F26, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
755 stfd(F27, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
756 stfd(F28, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
757 stfd(F29, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
758 stfd(F30, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
759 stfd(F31, offset, dst); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
760 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
761 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
762 // Uses ordering which corresponds to ABI: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
763 // _restgpr0_14: ld r14,-144(r1) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
764 // _restgpr0_15: ld r15,-136(r1) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
765 // _restgpr0_16: ld r16,-128(r1) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
766 void MacroAssembler::restore_nonvolatile_gprs(Register src, int offset) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
767 ld(R14, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
768 ld(R15, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
769 ld(R16, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
770 ld(R17, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
771 ld(R18, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
772 ld(R19, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
773 ld(R20, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
774 ld(R21, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
775 ld(R22, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
776 ld(R23, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
777 ld(R24, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
778 ld(R25, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
779 ld(R26, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
780 ld(R27, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
781 ld(R28, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
782 ld(R29, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
783 ld(R30, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
784 ld(R31, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
785 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
786 // FP registers |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
787 lfd(F14, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
788 lfd(F15, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
789 lfd(F16, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
790 lfd(F17, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
791 lfd(F18, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
792 lfd(F19, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
793 lfd(F20, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
794 lfd(F21, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
795 lfd(F22, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
796 lfd(F23, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
797 lfd(F24, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
798 lfd(F25, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
799 lfd(F26, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
800 lfd(F27, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
801 lfd(F28, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
802 lfd(F29, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
803 lfd(F30, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
804 lfd(F31, offset, src); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
805 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
806 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
807 // For verify_oops. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
808 void MacroAssembler::save_volatile_gprs(Register dst, int offset) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
809 std(R3, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
810 std(R4, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
811 std(R5, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
812 std(R6, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
813 std(R7, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
814 std(R8, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
815 std(R9, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
816 std(R10, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
817 std(R11, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
818 std(R12, offset, dst); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
819 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
820 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
821 // For verify_oops. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
822 void MacroAssembler::restore_volatile_gprs(Register src, int offset) { |
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diff
changeset
|
823 ld(R3, offset, src); offset += 8; |
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parents:
diff
changeset
|
824 ld(R4, offset, src); offset += 8; |
ec28f9c041ff
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parents:
diff
changeset
|
825 ld(R5, offset, src); offset += 8; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
826 ld(R6, offset, src); offset += 8; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
827 ld(R7, offset, src); offset += 8; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
828 ld(R8, offset, src); offset += 8; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
829 ld(R9, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
830 ld(R10, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
831 ld(R11, offset, src); offset += 8; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
832 ld(R12, offset, src); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
833 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
834 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
835 void MacroAssembler::save_LR_CR(Register tmp) { |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
836 mfcr(tmp); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
837 std(tmp, _abi(cr), R1_SP); |
ec28f9c041ff
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parents:
diff
changeset
|
838 mflr(tmp); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
839 std(tmp, _abi(lr), R1_SP); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
840 // Tmp must contain lr on exit! (see return_addr and prolog in ppc64.ad) |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
841 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
842 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
843 void MacroAssembler::restore_LR_CR(Register tmp) { |
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parents:
diff
changeset
|
844 assert(tmp != R1_SP, "must be distinct"); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
845 ld(tmp, _abi(lr), R1_SP); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
846 mtlr(tmp); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
847 ld(tmp, _abi(cr), R1_SP); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
848 mtcr(tmp); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
849 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
850 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
851 address MacroAssembler::get_PC_trash_LR(Register result) { |
ec28f9c041ff
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parents:
diff
changeset
|
852 Label L; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
853 bl(L); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
854 bind(L); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
855 address lr_pc = pc(); |
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parents:
diff
changeset
|
856 mflr(result); |
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parents:
diff
changeset
|
857 return lr_pc; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
858 } |
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parents:
diff
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|
859 |
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parents:
diff
changeset
|
860 void MacroAssembler::resize_frame(Register offset, Register tmp) { |
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parents:
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changeset
|
861 #ifdef ASSERT |
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parents:
diff
changeset
|
862 assert_different_registers(offset, tmp, R1_SP); |
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parents:
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|
863 andi_(tmp, offset, frame::alignment_in_bytes-1); |
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|
864 asm_assert_eq("resize_frame: unaligned", 0x204); |
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parents:
diff
changeset
|
865 #endif |
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parents:
diff
changeset
|
866 |
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parents:
diff
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|
867 // tmp <- *(SP) |
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parents:
diff
changeset
|
868 ld(tmp, _abi(callers_sp), R1_SP); |
ec28f9c041ff
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parents:
diff
changeset
|
869 // addr <- SP + offset; |
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parents:
diff
changeset
|
870 // *(addr) <- tmp; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
871 // SP <- addr |
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parents:
diff
changeset
|
872 stdux(tmp, R1_SP, offset); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
873 } |
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parents:
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changeset
|
874 |
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parents:
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|
875 void MacroAssembler::resize_frame(int offset, Register tmp) { |
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changeset
|
876 assert(is_simm(offset, 16), "too big an offset"); |
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|
877 assert_different_registers(tmp, R1_SP); |
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|
878 assert((offset & (frame::alignment_in_bytes-1))==0, "resize_frame: unaligned"); |
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parents:
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|
879 // tmp <- *(SP) |
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parents:
diff
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|
880 ld(tmp, _abi(callers_sp), R1_SP); |
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parents:
diff
changeset
|
881 // addr <- SP + offset; |
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parents:
diff
changeset
|
882 // *(addr) <- tmp; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
883 // SP <- addr |
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parents:
diff
changeset
|
884 stdu(tmp, offset, R1_SP); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
885 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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changeset
|
886 |
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parents:
diff
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|
887 void MacroAssembler::resize_frame_absolute(Register addr, Register tmp1, Register tmp2) { |
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|
888 // (addr == tmp1) || (addr == tmp2) is allowed here! |
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parents:
diff
changeset
|
889 assert(tmp1 != tmp2, "must be distinct"); |
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parents:
diff
changeset
|
890 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
891 // compute offset w.r.t. current stack pointer |
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parents:
diff
changeset
|
892 // tmp_1 <- addr - SP (!) |
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parents:
diff
changeset
|
893 subf(tmp1, R1_SP, addr); |
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parents:
diff
changeset
|
894 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
895 // atomically update SP keeping back link. |
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parents:
diff
changeset
|
896 resize_frame(tmp1/* offset */, tmp2/* tmp */); |
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parents:
diff
changeset
|
897 } |
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parents:
diff
changeset
|
898 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
899 void MacroAssembler::push_frame(Register bytes, Register tmp) { |
ec28f9c041ff
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parents:
diff
changeset
|
900 #ifdef ASSERT |
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parents:
diff
changeset
|
901 assert(bytes != R0, "r0 not allowed here"); |
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parents:
diff
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|
902 andi_(R0, bytes, frame::alignment_in_bytes-1); |
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parents:
diff
changeset
|
903 asm_assert_eq("push_frame(Reg, Reg): unaligned", 0x203); |
ec28f9c041ff
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parents:
diff
changeset
|
904 #endif |
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parents:
diff
changeset
|
905 neg(tmp, bytes); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
906 stdux(R1_SP, R1_SP, tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
907 } |
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parents:
diff
changeset
|
908 |
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parents:
diff
changeset
|
909 // Push a frame of size `bytes'. |
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parents:
diff
changeset
|
910 void MacroAssembler::push_frame(unsigned int bytes, Register tmp) { |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
911 long offset = align_addr(bytes, frame::alignment_in_bytes); |
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parents:
diff
changeset
|
912 if (is_simm(-offset, 16)) { |
ec28f9c041ff
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parents:
diff
changeset
|
913 stdu(R1_SP, -offset, R1_SP); |
ec28f9c041ff
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parents:
diff
changeset
|
914 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
915 load_const(tmp, -offset); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
916 stdux(R1_SP, R1_SP, tmp); |
ec28f9c041ff
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parents:
diff
changeset
|
917 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
918 } |
ec28f9c041ff
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parents:
diff
changeset
|
919 |
17803 | 920 // Push a frame of size `bytes' plus abi_reg_args on top. |
921 void MacroAssembler::push_frame_reg_args(unsigned int bytes, Register tmp) { | |
922 push_frame(bytes + frame::abi_reg_args_size, tmp); | |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
923 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
924 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
925 // Setup up a new C frame with a spill area for non-volatile GPRs and |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
926 // additional space for local variables. |
17803 | 927 void MacroAssembler::push_frame_reg_args_nonvolatiles(unsigned int bytes, |
928 Register tmp) { | |
929 push_frame(bytes + frame::abi_reg_args_size + frame::spill_nonvolatiles_size, tmp); | |
14408
ec28f9c041ff
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parents:
diff
changeset
|
930 } |
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parents:
diff
changeset
|
931 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
932 // Pop current C frame. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
933 void MacroAssembler::pop_frame() { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
934 ld(R1_SP, _abi(callers_sp), R1_SP); |
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parents:
diff
changeset
|
935 } |
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parents:
diff
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|
936 |
17803 | 937 #if defined(ABI_ELFv2) |
938 address MacroAssembler::branch_to(Register r_function_entry, bool and_link) { | |
939 // TODO(asmundak): make sure the caller uses R12 as function descriptor | |
940 // most of the times. | |
941 if (R12 != r_function_entry) { | |
942 mr(R12, r_function_entry); | |
943 } | |
944 mtctr(R12); | |
945 // Do a call or a branch. | |
946 if (and_link) { | |
947 bctrl(); | |
948 } else { | |
949 bctr(); | |
950 } | |
951 _last_calls_return_pc = pc(); | |
952 | |
953 return _last_calls_return_pc; | |
954 } | |
955 | |
956 // Call a C function via a function descriptor and use full C | |
957 // calling conventions. Updates and returns _last_calls_return_pc. | |
958 address MacroAssembler::call_c(Register r_function_entry) { | |
959 return branch_to(r_function_entry, /*and_link=*/true); | |
960 } | |
961 | |
962 // For tail calls: only branch, don't link, so callee returns to caller of this function. | |
963 address MacroAssembler::call_c_and_return_to_caller(Register r_function_entry) { | |
964 return branch_to(r_function_entry, /*and_link=*/false); | |
965 } | |
966 | |
967 address MacroAssembler::call_c(address function_entry, relocInfo::relocType rt) { | |
968 load_const(R12, function_entry, R0); | |
969 return branch_to(R12, /*and_link=*/true); | |
970 } | |
971 | |
972 #else | |
14408
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diff
changeset
|
973 // Generic version of a call to C function via a function descriptor |
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parents:
diff
changeset
|
974 // with variable support for C calling conventions (TOC, ENV, etc.). |
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parents:
diff
changeset
|
975 // Updates and returns _last_calls_return_pc. |
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diff
changeset
|
976 address MacroAssembler::branch_to(Register function_descriptor, bool and_link, bool save_toc_before_call, |
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parents:
diff
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|
977 bool restore_toc_after_call, bool load_toc_of_callee, bool load_env_of_callee) { |
ec28f9c041ff
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parents:
diff
changeset
|
978 // we emit standard ptrgl glue code here |
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parents:
diff
changeset
|
979 assert((function_descriptor != R0), "function_descriptor cannot be R0"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
980 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
981 // retrieve necessary entries from the function descriptor |
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982 ld(R0, in_bytes(FunctionDescriptor::entry_offset()), function_descriptor); |
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983 mtctr(R0); |
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parents:
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|
984 |
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|
985 if (load_toc_of_callee) { |
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parents:
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|
986 ld(R2_TOC, in_bytes(FunctionDescriptor::toc_offset()), function_descriptor); |
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987 } |
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parents:
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|
988 if (load_env_of_callee) { |
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|
989 ld(R11, in_bytes(FunctionDescriptor::env_offset()), function_descriptor); |
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990 } else if (load_toc_of_callee) { |
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991 li(R11, 0); |
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parents:
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|
992 } |
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|
993 |
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parents:
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994 // do a call or a branch |
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parents:
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|
995 if (and_link) { |
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parents:
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|
996 bctrl(); |
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parents:
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|
997 } else { |
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parents:
diff
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|
998 bctr(); |
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parents:
diff
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|
999 } |
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parents:
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|
1000 _last_calls_return_pc = pc(); |
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parents:
diff
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|
1001 |
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|
1002 return _last_calls_return_pc; |
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parents:
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|
1003 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1004 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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|
1005 // Call a C function via a function descriptor and use full C calling |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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|
1006 // conventions. |
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parents:
diff
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|
1007 // We don't use the TOC in generated code, so there is no need to save |
ec28f9c041ff
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|
1008 // and restore its value. |
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|
1009 address MacroAssembler::call_c(Register fd) { |
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|
1010 return branch_to(fd, /*and_link=*/true, |
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parents:
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|
1011 /*save toc=*/false, |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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|
1012 /*restore toc=*/false, |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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|
1013 /*load toc=*/true, |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1014 /*load env=*/true); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1015 } |
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parents:
diff
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|
1016 |
14445 | 1017 address MacroAssembler::call_c_and_return_to_caller(Register fd) { |
1018 return branch_to(fd, /*and_link=*/false, | |
1019 /*save toc=*/false, | |
1020 /*restore toc=*/false, | |
1021 /*load toc=*/true, | |
1022 /*load env=*/true); | |
1023 } | |
1024 | |
14408
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parents:
diff
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|
1025 address MacroAssembler::call_c(const FunctionDescriptor* fd, relocInfo::relocType rt) { |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1026 if (rt != relocInfo::none) { |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1027 // this call needs to be relocatable |
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goetz
parents:
diff
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|
1028 if (!ReoptimizeCallSequences |
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parents:
diff
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|
1029 || (rt != relocInfo::runtime_call_type && rt != relocInfo::none) |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1030 || fd == NULL // support code-size estimation |
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parents:
diff
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|
1031 || !fd->is_friend_function() |
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parents:
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|
1032 || fd->entry() == NULL) { |
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parents:
diff
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|
1033 // it's not a friend function as defined by class FunctionDescriptor, |
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parents:
diff
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|
1034 // so do a full call-c here. |
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parents:
diff
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|
1035 load_const(R11, (address)fd, R0); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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|
1036 |
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diff
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|
1037 bool has_env = (fd != NULL && fd->env() != NULL); |
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|
1038 return branch_to(R11, /*and_link=*/true, |
17793 | 1039 /*save toc=*/false, |
1040 /*restore toc=*/false, | |
1041 /*load toc=*/true, | |
1042 /*load env=*/has_env); | |
14408
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parents:
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|
1043 } else { |
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parents:
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|
1044 // It's a friend function. Load the entry point and don't care about |
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diff
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|
1045 // toc and env. Use an optimizable call instruction, but ensure the |
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parents:
diff
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|
1046 // same code-size as in the case of a non-friend function. |
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parents:
diff
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|
1047 nop(); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1048 nop(); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1049 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1050 bl64_patchable(fd->entry(), rt); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1051 _last_calls_return_pc = pc(); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1052 return _last_calls_return_pc; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1053 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1054 } else { |
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parents:
diff
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|
1055 // This call does not need to be relocatable, do more aggressive |
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parents:
diff
changeset
|
1056 // optimizations. |
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parents:
diff
changeset
|
1057 if (!ReoptimizeCallSequences |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1058 || !fd->is_friend_function()) { |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1059 // It's not a friend function as defined by class FunctionDescriptor, |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1060 // so do a full call-c here. |
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goetz
parents:
diff
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|
1061 load_const(R11, (address)fd, R0); |
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parents:
diff
changeset
|
1062 return branch_to(R11, /*and_link=*/true, |
17793 | 1063 /*save toc=*/false, |
1064 /*restore toc=*/false, | |
1065 /*load toc=*/true, | |
1066 /*load env=*/true); | |
14408
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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|
1067 } else { |
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parents:
diff
changeset
|
1068 // it's a friend function, load the entry point and don't care about |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1069 // toc and env. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1070 address dest = fd->entry(); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1071 if (is_within_range_of_b(dest, pc())) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1072 bl(dest); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1073 } else { |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1074 bl64_patchable(dest, rt); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1075 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1076 _last_calls_return_pc = pc(); |
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parents:
diff
changeset
|
1077 return _last_calls_return_pc; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1078 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1079 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1080 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1081 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1082 // Call a C function. All constants needed reside in TOC. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1083 // |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1084 // Read the address to call from the TOC. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1085 // Read env from TOC, if fd specifies an env. |
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goetz
parents:
diff
changeset
|
1086 // Read new TOC from TOC. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1087 address MacroAssembler::call_c_using_toc(const FunctionDescriptor* fd, |
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parents:
diff
changeset
|
1088 relocInfo::relocType rt, Register toc) { |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1089 if (!ReoptimizeCallSequences |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1090 || (rt != relocInfo::runtime_call_type && rt != relocInfo::none) |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1091 || !fd->is_friend_function()) { |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1092 // It's not a friend function as defined by class FunctionDescriptor, |
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parents:
diff
changeset
|
1093 // so do a full call-c here. |
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parents:
diff
changeset
|
1094 assert(fd->entry() != NULL, "function must be linked"); |
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parents:
diff
changeset
|
1095 |
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parents:
diff
changeset
|
1096 AddressLiteral fd_entry(fd->entry()); |
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parents:
diff
changeset
|
1097 load_const_from_method_toc(R11, fd_entry, toc); |
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parents:
diff
changeset
|
1098 mtctr(R11); |
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parents:
diff
changeset
|
1099 if (fd->env() == NULL) { |
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parents:
diff
changeset
|
1100 li(R11, 0); |
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parents:
diff
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|
1101 nop(); |
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parents:
diff
changeset
|
1102 } else { |
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parents:
diff
changeset
|
1103 AddressLiteral fd_env(fd->env()); |
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parents:
diff
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|
1104 load_const_from_method_toc(R11, fd_env, toc); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1105 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1106 AddressLiteral fd_toc(fd->toc()); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1107 load_toc_from_toc(R2_TOC, fd_toc, toc); |
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parents:
diff
changeset
|
1108 // R2_TOC is killed. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1109 bctrl(); |
ec28f9c041ff
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parents:
diff
changeset
|
1110 _last_calls_return_pc = pc(); |
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parents:
diff
changeset
|
1111 } else { |
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parents:
diff
changeset
|
1112 // It's a friend function, load the entry point and don't care about |
ec28f9c041ff
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parents:
diff
changeset
|
1113 // toc and env. Use an optimizable call instruction, but ensure the |
ec28f9c041ff
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parents:
diff
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|
1114 // same code-size as in the case of a non-friend function. |
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parents:
diff
changeset
|
1115 nop(); |
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parents:
diff
changeset
|
1116 bl64_patchable(fd->entry(), rt); |
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parents:
diff
changeset
|
1117 _last_calls_return_pc = pc(); |
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parents:
diff
changeset
|
1118 } |
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parents:
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|
1119 return _last_calls_return_pc; |
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parents:
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|
1120 } |
17807 | 1121 #endif // ABI_ELFv2 |
14408
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parents:
diff
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|
1122 |
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parents:
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changeset
|
1123 void MacroAssembler::call_VM_base(Register oop_result, |
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parents:
diff
changeset
|
1124 Register last_java_sp, |
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parents:
diff
changeset
|
1125 address entry_point, |
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parents:
diff
changeset
|
1126 bool check_exceptions) { |
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parents:
diff
changeset
|
1127 BLOCK_COMMENT("call_VM {"); |
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parents:
diff
changeset
|
1128 // Determine last_java_sp register. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1129 if (!last_java_sp->is_valid()) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1130 last_java_sp = R1_SP; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1131 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1132 set_top_ijava_frame_at_SP_as_last_Java_frame(last_java_sp, R11_scratch1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1133 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1134 // ARG1 must hold thread address. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1135 mr(R3_ARG1, R16_thread); |
17803 | 1136 #if defined(ABI_ELFv2) |
1137 address return_pc = call_c(entry_point, relocInfo::none); | |
1138 #else | |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1139 address return_pc = call_c((FunctionDescriptor*)entry_point, relocInfo::none); |
17803 | 1140 #endif |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1141 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1142 reset_last_Java_frame(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1143 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1144 // Check for pending exceptions. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1145 if (check_exceptions) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1146 // We don't check for exceptions here. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1147 ShouldNotReachHere(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1148 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1149 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1150 // Get oop result if there is one and reset the value in the thread. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1151 if (oop_result->is_valid()) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1152 get_vm_result(oop_result); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1153 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1154 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1155 _last_calls_return_pc = return_pc; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1156 BLOCK_COMMENT("} call_VM"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1157 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1158 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1159 void MacroAssembler::call_VM_leaf_base(address entry_point) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1160 BLOCK_COMMENT("call_VM_leaf {"); |
17803 | 1161 #if defined(ABI_ELFv2) |
1162 call_c(entry_point, relocInfo::none); | |
1163 #else | |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1164 call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, entry_point), relocInfo::none); |
17803 | 1165 #endif |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1166 BLOCK_COMMENT("} call_VM_leaf"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1167 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1168 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1169 void MacroAssembler::call_VM(Register oop_result, address entry_point, bool check_exceptions) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1170 call_VM_base(oop_result, noreg, entry_point, check_exceptions); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1171 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1172 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1173 void MacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1174 bool check_exceptions) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1175 // R3_ARG1 is reserved for the thread. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1176 mr_if_needed(R4_ARG2, arg_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1177 call_VM(oop_result, entry_point, check_exceptions); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1178 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1179 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1180 void MacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1181 bool check_exceptions) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1182 // R3_ARG1 is reserved for the thread |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1183 mr_if_needed(R4_ARG2, arg_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1184 assert(arg_2 != R4_ARG2, "smashed argument"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1185 mr_if_needed(R5_ARG3, arg_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1186 call_VM(oop_result, entry_point, check_exceptions); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1187 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1188 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1189 void MacroAssembler::call_VM_leaf(address entry_point) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1190 call_VM_leaf_base(entry_point); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1191 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1192 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1193 void MacroAssembler::call_VM_leaf(address entry_point, Register arg_1) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1194 mr_if_needed(R3_ARG1, arg_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1195 call_VM_leaf(entry_point); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1196 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1197 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1198 void MacroAssembler::call_VM_leaf(address entry_point, Register arg_1, Register arg_2) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1199 mr_if_needed(R3_ARG1, arg_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1200 assert(arg_2 != R3_ARG1, "smashed argument"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1201 mr_if_needed(R4_ARG2, arg_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1202 call_VM_leaf(entry_point); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1203 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1204 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1205 void MacroAssembler::call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1206 mr_if_needed(R3_ARG1, arg_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1207 assert(arg_2 != R3_ARG1, "smashed argument"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1208 mr_if_needed(R4_ARG2, arg_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1209 assert(arg_3 != R3_ARG1 && arg_3 != R4_ARG2, "smashed argument"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1210 mr_if_needed(R5_ARG3, arg_3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1211 call_VM_leaf(entry_point); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1212 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1213 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1214 // Check whether instruction is a read access to the polling page |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1215 // which was emitted by load_from_polling_page(..). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1216 bool MacroAssembler::is_load_from_polling_page(int instruction, void* ucontext, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1217 address* polling_address_ptr) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1218 if (!is_ld(instruction)) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1219 return false; // It's not a ld. Fail. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1220 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1221 int rt = inv_rt_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1222 int ra = inv_ra_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1223 int ds = inv_ds_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1224 if (!(ds == 0 && ra != 0 && rt == 0)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1225 return false; // It's not a ld(r0, X, ra). Fail. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1226 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1227 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1228 if (!ucontext) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1229 // Set polling address. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1230 if (polling_address_ptr != NULL) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1231 *polling_address_ptr = NULL; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1232 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1233 return true; // No ucontext given. Can't check value of ra. Assume true. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1234 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1235 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1236 #ifdef LINUX |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1237 // Ucontext given. Check that register ra contains the address of |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1238 // the safepoing polling page. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1239 ucontext_t* uc = (ucontext_t*) ucontext; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1240 // Set polling address. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1241 address addr = (address)uc->uc_mcontext.regs->gpr[ra] + (ssize_t)ds; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1242 if (polling_address_ptr != NULL) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1243 *polling_address_ptr = addr; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1244 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1245 return os::is_poll_address(addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1246 #else |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1247 // Not on Linux, ucontext must be NULL. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1248 ShouldNotReachHere(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1249 return false; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1250 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1251 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1252 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1253 bool MacroAssembler::is_memory_serialization(int instruction, JavaThread* thread, void* ucontext) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1254 #ifdef LINUX |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1255 ucontext_t* uc = (ucontext_t*) ucontext; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1256 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1257 if (is_stwx(instruction) || is_stwux(instruction)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1258 int ra = inv_ra_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1259 int rb = inv_rb_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1260 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1261 // look up content of ra and rb in ucontext |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1262 address ra_val=(address)uc->uc_mcontext.regs->gpr[ra]; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1263 long rb_val=(long)uc->uc_mcontext.regs->gpr[rb]; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1264 return os::is_memory_serialize_page(thread, ra_val+rb_val); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1265 } else if (is_stw(instruction) || is_stwu(instruction)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1266 int ra = inv_ra_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1267 int d1 = inv_d1_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1268 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1269 // look up content of ra in ucontext |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1270 address ra_val=(address)uc->uc_mcontext.regs->gpr[ra]; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1271 return os::is_memory_serialize_page(thread, ra_val+d1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1272 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1273 return false; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1274 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1275 #else |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1276 // workaround not needed on !LINUX :-) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1277 ShouldNotCallThis(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1278 return false; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1279 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1280 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1281 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1282 void MacroAssembler::bang_stack_with_offset(int offset) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1283 // When increasing the stack, the old stack pointer will be written |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1284 // to the new top of stack according to the PPC64 abi. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1285 // Therefore, stack banging is not necessary when increasing |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1286 // the stack by <= os::vm_page_size() bytes. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1287 // When increasing the stack by a larger amount, this method is |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1288 // called repeatedly to bang the intermediate pages. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1289 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1290 // Stack grows down, caller passes positive offset. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1291 assert(offset > 0, "must bang with positive offset"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1292 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1293 long stdoffset = -offset; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1294 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1295 if (is_simm(stdoffset, 16)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1296 // Signed 16 bit offset, a simple std is ok. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1297 if (UseLoadInstructionsForStackBangingPPC64) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1298 ld(R0, (int)(signed short)stdoffset, R1_SP); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1299 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1300 std(R0,(int)(signed short)stdoffset, R1_SP); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1301 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1302 } else if (is_simm(stdoffset, 31)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1303 const int hi = MacroAssembler::largeoffset_si16_si16_hi(stdoffset); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1304 const int lo = MacroAssembler::largeoffset_si16_si16_lo(stdoffset); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1305 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1306 Register tmp = R11; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1307 addis(tmp, R1_SP, hi); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1308 if (UseLoadInstructionsForStackBangingPPC64) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1309 ld(R0, lo, tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1310 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1311 std(R0, lo, tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1312 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1313 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1314 ShouldNotReachHere(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1315 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1316 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1317 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1318 // If instruction is a stack bang of the form |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1319 // std R0, x(Ry), (see bang_stack_with_offset()) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1320 // stdu R1_SP, x(R1_SP), (see push_frame(), resize_frame()) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1321 // or stdux R1_SP, Rx, R1_SP (see push_frame(), resize_frame()) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1322 // return the banged address. Otherwise, return 0. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1323 address MacroAssembler::get_stack_bang_address(int instruction, void *ucontext) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1324 #ifdef LINUX |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1325 ucontext_t* uc = (ucontext_t*) ucontext; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1326 int rs = inv_rs_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1327 int ra = inv_ra_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1328 if ( (is_ld(instruction) && rs == 0 && UseLoadInstructionsForStackBangingPPC64) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1329 || (is_std(instruction) && rs == 0 && !UseLoadInstructionsForStackBangingPPC64) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1330 || (is_stdu(instruction) && rs == 1)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1331 int ds = inv_ds_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1332 // return banged address |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1333 return ds+(address)uc->uc_mcontext.regs->gpr[ra]; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1334 } else if (is_stdux(instruction) && rs == 1) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1335 int rb = inv_rb_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1336 address sp = (address)uc->uc_mcontext.regs->gpr[1]; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1337 long rb_val = (long)uc->uc_mcontext.regs->gpr[rb]; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1338 return ra != 1 || rb_val >= 0 ? NULL // not a stack bang |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1339 : sp + rb_val; // banged address |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1340 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1341 return NULL; // not a stack bang |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1342 #else |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1343 // workaround not needed on !LINUX :-) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1344 ShouldNotCallThis(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1345 return NULL; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1346 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1347 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1348 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1349 // CmpxchgX sets condition register to cmpX(current, compare). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1350 void MacroAssembler::cmpxchgw(ConditionRegister flag, Register dest_current_value, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1351 Register compare_value, Register exchange_value, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1352 Register addr_base, int semantics, bool cmpxchgx_hint, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1353 Register int_flag_success, bool contention_hint) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1354 Label retry; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1355 Label failed; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1356 Label done; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1357 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1358 // Save one branch if result is returned via register and |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1359 // result register is different from the other ones. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1360 bool use_result_reg = (int_flag_success != noreg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1361 bool preset_result_reg = (int_flag_success != dest_current_value && int_flag_success != compare_value && |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1362 int_flag_success != exchange_value && int_flag_success != addr_base); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1363 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1364 // release/fence semantics |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1365 if (semantics & MemBarRel) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1366 release(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1367 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1368 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1369 if (use_result_reg && preset_result_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1370 li(int_flag_success, 0); // preset (assume cas failed) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1371 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1372 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1373 // Add simple guard in order to reduce risk of starving under high contention (recommended by IBM). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1374 if (contention_hint) { // Don't try to reserve if cmp fails. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1375 lwz(dest_current_value, 0, addr_base); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1376 cmpw(flag, dest_current_value, compare_value); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1377 bne(flag, failed); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1378 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1379 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1380 // atomic emulation loop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1381 bind(retry); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1382 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1383 lwarx(dest_current_value, addr_base, cmpxchgx_hint); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1384 cmpw(flag, dest_current_value, compare_value); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1385 if (UseStaticBranchPredictionInCompareAndSwapPPC64) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1386 bne_predict_not_taken(flag, failed); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1387 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1388 bne( flag, failed); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1389 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1390 // branch to done => (flag == ne), (dest_current_value != compare_value) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1391 // fall through => (flag == eq), (dest_current_value == compare_value) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1392 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1393 stwcx_(exchange_value, addr_base); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1394 if (UseStaticBranchPredictionInCompareAndSwapPPC64) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1395 bne_predict_not_taken(CCR0, retry); // StXcx_ sets CCR0. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1396 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1397 bne( CCR0, retry); // StXcx_ sets CCR0. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1398 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1399 // fall through => (flag == eq), (dest_current_value == compare_value), (swapped) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1400 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1401 // Result in register (must do this at the end because int_flag_success can be the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1402 // same register as one above). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1403 if (use_result_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1404 li(int_flag_success, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1405 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1406 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1407 if (semantics & MemBarFenceAfter) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1408 fence(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1409 } else if (semantics & MemBarAcq) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1410 isync(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1411 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1412 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1413 if (use_result_reg && !preset_result_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1414 b(done); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1415 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1416 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1417 bind(failed); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1418 if (use_result_reg && !preset_result_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1419 li(int_flag_success, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1420 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1421 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1422 bind(done); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1423 // (flag == ne) => (dest_current_value != compare_value), (!swapped) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1424 // (flag == eq) => (dest_current_value == compare_value), ( swapped) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1425 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1426 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1427 // Preforms atomic compare exchange: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1428 // if (compare_value == *addr_base) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1429 // *addr_base = exchange_value |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1430 // int_flag_success = 1; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1431 // else |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1432 // int_flag_success = 0; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1433 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1434 // ConditionRegister flag = cmp(compare_value, *addr_base) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1435 // Register dest_current_value = *addr_base |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1436 // Register compare_value Used to compare with value in memory |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1437 // Register exchange_value Written to memory if compare_value == *addr_base |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1438 // Register addr_base The memory location to compareXChange |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1439 // Register int_flag_success Set to 1 if exchange_value was written to *addr_base |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1440 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1441 // To avoid the costly compare exchange the value is tested beforehand. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1442 // Several special cases exist to avoid that unnecessary information is generated. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1443 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1444 void MacroAssembler::cmpxchgd(ConditionRegister flag, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1445 Register dest_current_value, Register compare_value, Register exchange_value, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1446 Register addr_base, int semantics, bool cmpxchgx_hint, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1447 Register int_flag_success, Label* failed_ext, bool contention_hint) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1448 Label retry; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1449 Label failed_int; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1450 Label& failed = (failed_ext != NULL) ? *failed_ext : failed_int; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1451 Label done; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1452 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1453 // Save one branch if result is returned via register and result register is different from the other ones. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1454 bool use_result_reg = (int_flag_success!=noreg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1455 bool preset_result_reg = (int_flag_success!=dest_current_value && int_flag_success!=compare_value && |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1456 int_flag_success!=exchange_value && int_flag_success!=addr_base); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1457 assert(int_flag_success == noreg || failed_ext == NULL, "cannot have both"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1458 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1459 // release/fence semantics |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1460 if (semantics & MemBarRel) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1461 release(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1462 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1463 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1464 if (use_result_reg && preset_result_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1465 li(int_flag_success, 0); // preset (assume cas failed) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1466 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1467 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1468 // Add simple guard in order to reduce risk of starving under high contention (recommended by IBM). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1469 if (contention_hint) { // Don't try to reserve if cmp fails. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1470 ld(dest_current_value, 0, addr_base); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1471 cmpd(flag, dest_current_value, compare_value); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1472 bne(flag, failed); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1473 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1474 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1475 // atomic emulation loop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1476 bind(retry); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1477 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1478 ldarx(dest_current_value, addr_base, cmpxchgx_hint); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1479 cmpd(flag, dest_current_value, compare_value); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1480 if (UseStaticBranchPredictionInCompareAndSwapPPC64) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1481 bne_predict_not_taken(flag, failed); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1482 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1483 bne( flag, failed); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1484 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1485 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1486 stdcx_(exchange_value, addr_base); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1487 if (UseStaticBranchPredictionInCompareAndSwapPPC64) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1488 bne_predict_not_taken(CCR0, retry); // stXcx_ sets CCR0 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1489 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1490 bne( CCR0, retry); // stXcx_ sets CCR0 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1491 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1492 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1493 // result in register (must do this at the end because int_flag_success can be the same register as one above) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1494 if (use_result_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1495 li(int_flag_success, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1496 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1497 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1498 // POWER6 doesn't need isync in CAS. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1499 // Always emit isync to be on the safe side. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1500 if (semantics & MemBarFenceAfter) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1501 fence(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1502 } else if (semantics & MemBarAcq) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1503 isync(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1504 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1505 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1506 if (use_result_reg && !preset_result_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1507 b(done); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1508 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1509 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1510 bind(failed_int); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1511 if (use_result_reg && !preset_result_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1512 li(int_flag_success, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1513 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1514 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1515 bind(done); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1516 // (flag == ne) => (dest_current_value != compare_value), (!swapped) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1517 // (flag == eq) => (dest_current_value == compare_value), ( swapped) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1518 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1519 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1520 // Look up the method for a megamorphic invokeinterface call. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1521 // The target method is determined by <intf_klass, itable_index>. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1522 // The receiver klass is in recv_klass. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1523 // On success, the result will be in method_result, and execution falls through. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1524 // On failure, execution transfers to the given label. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1525 void MacroAssembler::lookup_interface_method(Register recv_klass, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1526 Register intf_klass, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1527 RegisterOrConstant itable_index, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1528 Register method_result, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1529 Register scan_temp, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1530 Register sethi_temp, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1531 Label& L_no_such_interface) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1532 assert_different_registers(recv_klass, intf_klass, method_result, scan_temp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1533 assert(itable_index.is_constant() || itable_index.as_register() == method_result, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1534 "caller must use same register for non-constant itable index as for method"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1535 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1536 // Compute start of first itableOffsetEntry (which is at the end of the vtable). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1537 int vtable_base = InstanceKlass::vtable_start_offset() * wordSize; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1538 int itentry_off = itableMethodEntry::method_offset_in_bytes(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1539 int logMEsize = exact_log2(itableMethodEntry::size() * wordSize); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1540 int scan_step = itableOffsetEntry::size() * wordSize; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1541 int log_vte_size= exact_log2(vtableEntry::size() * wordSize); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1542 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1543 lwz(scan_temp, InstanceKlass::vtable_length_offset() * wordSize, recv_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1544 // %%% We should store the aligned, prescaled offset in the klassoop. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1545 // Then the next several instructions would fold away. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1546 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1547 sldi(scan_temp, scan_temp, log_vte_size); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1548 addi(scan_temp, scan_temp, vtable_base); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1549 add(scan_temp, recv_klass, scan_temp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1550 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1551 // Adjust recv_klass by scaled itable_index, so we can free itable_index. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1552 if (itable_index.is_register()) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1553 Register itable_offset = itable_index.as_register(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1554 sldi(itable_offset, itable_offset, logMEsize); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1555 if (itentry_off) addi(itable_offset, itable_offset, itentry_off); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1556 add(recv_klass, itable_offset, recv_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1557 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1558 long itable_offset = (long)itable_index.as_constant(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1559 load_const_optimized(sethi_temp, (itable_offset<<logMEsize)+itentry_off); // static address, no relocation |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1560 add(recv_klass, sethi_temp, recv_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1561 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1562 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1563 // for (scan = klass->itable(); scan->interface() != NULL; scan += scan_step) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1564 // if (scan->interface() == intf) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1565 // result = (klass + scan->offset() + itable_index); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1566 // } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1567 // } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1568 Label search, found_method; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1569 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1570 for (int peel = 1; peel >= 0; peel--) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1571 // %%%% Could load both offset and interface in one ldx, if they were |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1572 // in the opposite order. This would save a load. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1573 ld(method_result, itableOffsetEntry::interface_offset_in_bytes(), scan_temp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1574 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1575 // Check that this entry is non-null. A null entry means that |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1576 // the receiver class doesn't implement the interface, and wasn't the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1577 // same as when the caller was compiled. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1578 cmpd(CCR0, method_result, intf_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1579 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1580 if (peel) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1581 beq(CCR0, found_method); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1582 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1583 bne(CCR0, search); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1584 // (invert the test to fall through to found_method...) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1585 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1586 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1587 if (!peel) break; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1588 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1589 bind(search); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1590 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1591 cmpdi(CCR0, method_result, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1592 beq(CCR0, L_no_such_interface); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1593 addi(scan_temp, scan_temp, scan_step); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1594 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1595 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1596 bind(found_method); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1597 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1598 // Got a hit. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1599 int ito_offset = itableOffsetEntry::offset_offset_in_bytes(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1600 lwz(scan_temp, ito_offset, scan_temp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1601 ldx(method_result, scan_temp, recv_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1602 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1603 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1604 // virtual method calling |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1605 void MacroAssembler::lookup_virtual_method(Register recv_klass, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1606 RegisterOrConstant vtable_index, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1607 Register method_result) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1608 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1609 assert_different_registers(recv_klass, method_result, vtable_index.register_or_noreg()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1610 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1611 const int base = InstanceKlass::vtable_start_offset() * wordSize; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1612 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1613 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1614 if (vtable_index.is_register()) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1615 sldi(vtable_index.as_register(), vtable_index.as_register(), LogBytesPerWord); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1616 add(recv_klass, vtable_index.as_register(), recv_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1617 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1618 addi(recv_klass, recv_klass, vtable_index.as_constant() << LogBytesPerWord); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1619 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1620 ld(R19_method, base + vtableEntry::method_offset_in_bytes(), recv_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1621 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1622 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1623 /////////////////////////////////////////// subtype checking //////////////////////////////////////////// |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1624 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1625 void MacroAssembler::check_klass_subtype_fast_path(Register sub_klass, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1626 Register super_klass, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1627 Register temp1_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1628 Register temp2_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1629 Label& L_success, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1630 Label& L_failure) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1631 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1632 const Register check_cache_offset = temp1_reg; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1633 const Register cached_super = temp2_reg; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1634 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1635 assert_different_registers(sub_klass, super_klass, check_cache_offset, cached_super); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1636 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1637 int sco_offset = in_bytes(Klass::super_check_offset_offset()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1638 int sc_offset = in_bytes(Klass::secondary_super_cache_offset()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1639 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1640 // If the pointers are equal, we are done (e.g., String[] elements). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1641 // This self-check enables sharing of secondary supertype arrays among |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1642 // non-primary types such as array-of-interface. Otherwise, each such |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1643 // type would need its own customized SSA. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1644 // We move this check to the front of the fast path because many |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1645 // type checks are in fact trivially successful in this manner, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1646 // so we get a nicely predicted branch right at the start of the check. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1647 cmpd(CCR0, sub_klass, super_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1648 beq(CCR0, L_success); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1649 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1650 // Check the supertype display: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1651 lwz(check_cache_offset, sco_offset, super_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1652 // The loaded value is the offset from KlassOopDesc. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1653 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1654 ldx(cached_super, check_cache_offset, sub_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1655 cmpd(CCR0, cached_super, super_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1656 beq(CCR0, L_success); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1657 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1658 // This check has worked decisively for primary supers. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1659 // Secondary supers are sought in the super_cache ('super_cache_addr'). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1660 // (Secondary supers are interfaces and very deeply nested subtypes.) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1661 // This works in the same check above because of a tricky aliasing |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1662 // between the super_cache and the primary super display elements. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1663 // (The 'super_check_addr' can address either, as the case requires.) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1664 // Note that the cache is updated below if it does not help us find |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1665 // what we need immediately. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1666 // So if it was a primary super, we can just fail immediately. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1667 // Otherwise, it's the slow path for us (no success at this point). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1668 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1669 cmpwi(CCR0, check_cache_offset, sc_offset); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1670 bne(CCR0, L_failure); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1671 // bind(slow_path); // fallthru |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1672 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1673 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1674 void MacroAssembler::check_klass_subtype_slow_path(Register sub_klass, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1675 Register super_klass, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1676 Register temp1_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1677 Register temp2_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1678 Label* L_success, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1679 Register result_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1680 const Register array_ptr = temp1_reg; // current value from cache array |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1681 const Register temp = temp2_reg; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1682 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1683 assert_different_registers(sub_klass, super_klass, array_ptr, temp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1684 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1685 int source_offset = in_bytes(Klass::secondary_supers_offset()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1686 int target_offset = in_bytes(Klass::secondary_super_cache_offset()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1687 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1688 int length_offset = Array<Klass*>::length_offset_in_bytes(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1689 int base_offset = Array<Klass*>::base_offset_in_bytes(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1690 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1691 Label hit, loop, failure, fallthru; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1692 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1693 ld(array_ptr, source_offset, sub_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1694 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1695 //assert(4 == arrayOopDesc::length_length_in_bytes(), "precondition violated."); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1696 lwz(temp, length_offset, array_ptr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1697 cmpwi(CCR0, temp, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1698 beq(CCR0, result_reg!=noreg ? failure : fallthru); // length 0 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1699 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1700 mtctr(temp); // load ctr |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1701 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1702 bind(loop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1703 // Oops in table are NO MORE compressed. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1704 ld(temp, base_offset, array_ptr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1705 cmpd(CCR0, temp, super_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1706 beq(CCR0, hit); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1707 addi(array_ptr, array_ptr, BytesPerWord); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1708 bdnz(loop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1709 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1710 bind(failure); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1711 if (result_reg!=noreg) li(result_reg, 1); // load non-zero result (indicates a miss) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1712 b(fallthru); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1713 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1714 bind(hit); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1715 std(super_klass, target_offset, sub_klass); // save result to cache |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1716 if (result_reg != noreg) li(result_reg, 0); // load zero result (indicates a hit) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1717 if (L_success != NULL) b(*L_success); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1718 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1719 bind(fallthru); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1720 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1721 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1722 // Try fast path, then go to slow one if not successful |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1723 void MacroAssembler::check_klass_subtype(Register sub_klass, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1724 Register super_klass, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1725 Register temp1_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1726 Register temp2_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1727 Label& L_success) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1728 Label L_failure; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1729 check_klass_subtype_fast_path(sub_klass, super_klass, temp1_reg, temp2_reg, L_success, L_failure); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1730 check_klass_subtype_slow_path(sub_klass, super_klass, temp1_reg, temp2_reg, &L_success); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1731 bind(L_failure); // Fallthru if not successful. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1732 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1733 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1734 void MacroAssembler::check_method_handle_type(Register mtype_reg, Register mh_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1735 Register temp_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1736 Label& wrong_method_type) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1737 assert_different_registers(mtype_reg, mh_reg, temp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1738 // Compare method type against that of the receiver. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1739 load_heap_oop_not_null(temp_reg, delayed_value(java_lang_invoke_MethodHandle::type_offset_in_bytes, temp_reg), mh_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1740 cmpd(CCR0, temp_reg, mtype_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1741 bne(CCR0, wrong_method_type); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1742 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1743 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1744 RegisterOrConstant MacroAssembler::argument_offset(RegisterOrConstant arg_slot, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1745 Register temp_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1746 int extra_slot_offset) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1747 // cf. TemplateTable::prepare_invoke(), if (load_receiver). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1748 int stackElementSize = Interpreter::stackElementSize; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1749 int offset = extra_slot_offset * stackElementSize; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1750 if (arg_slot.is_constant()) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1751 offset += arg_slot.as_constant() * stackElementSize; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1752 return offset; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1753 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1754 assert(temp_reg != noreg, "must specify"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1755 sldi(temp_reg, arg_slot.as_register(), exact_log2(stackElementSize)); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1756 if (offset != 0) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1757 addi(temp_reg, temp_reg, offset); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1758 return temp_reg; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1759 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1760 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1761 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1762 void MacroAssembler::biased_locking_enter(ConditionRegister cr_reg, Register obj_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1763 Register mark_reg, Register temp_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1764 Register temp2_reg, Label& done, Label* slow_case) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1765 assert(UseBiasedLocking, "why call this otherwise?"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1766 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1767 #ifdef ASSERT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1768 assert_different_registers(obj_reg, mark_reg, temp_reg, temp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1769 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1770 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1771 Label cas_label; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1772 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1773 // Branch to done if fast path fails and no slow_case provided. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1774 Label *slow_case_int = (slow_case != NULL) ? slow_case : &done; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1775 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1776 // Biased locking |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1777 // See whether the lock is currently biased toward our thread and |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1778 // whether the epoch is still valid |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1779 // Note that the runtime guarantees sufficient alignment of JavaThread |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1780 // pointers to allow age to be placed into low bits |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1781 assert(markOopDesc::age_shift == markOopDesc::lock_bits + markOopDesc::biased_lock_bits, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1782 "biased locking makes assumptions about bit layout"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1783 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1784 if (PrintBiasedLockingStatistics) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1785 load_const(temp_reg, (address) BiasedLocking::total_entry_count_addr(), temp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1786 lwz(temp2_reg, 0, temp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1787 addi(temp2_reg, temp2_reg, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1788 stw(temp2_reg, 0, temp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1789 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1790 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1791 andi(temp_reg, mark_reg, markOopDesc::biased_lock_mask_in_place); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1792 cmpwi(cr_reg, temp_reg, markOopDesc::biased_lock_pattern); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1793 bne(cr_reg, cas_label); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1794 |
17807 | 1795 load_klass(temp_reg, obj_reg); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1796 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1797 load_const_optimized(temp2_reg, ~((int) markOopDesc::age_mask_in_place)); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1798 ld(temp_reg, in_bytes(Klass::prototype_header_offset()), temp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1799 orr(temp_reg, R16_thread, temp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1800 xorr(temp_reg, mark_reg, temp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1801 andr(temp_reg, temp_reg, temp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1802 cmpdi(cr_reg, temp_reg, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1803 if (PrintBiasedLockingStatistics) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1804 Label l; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1805 bne(cr_reg, l); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1806 load_const(mark_reg, (address) BiasedLocking::biased_lock_entry_count_addr()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1807 lwz(temp2_reg, 0, mark_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1808 addi(temp2_reg, temp2_reg, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1809 stw(temp2_reg, 0, mark_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1810 // restore mark_reg |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1811 ld(mark_reg, oopDesc::mark_offset_in_bytes(), obj_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1812 bind(l); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1813 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1814 beq(cr_reg, done); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1815 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1816 Label try_revoke_bias; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1817 Label try_rebias; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1818 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1819 // At this point we know that the header has the bias pattern and |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1820 // that we are not the bias owner in the current epoch. We need to |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1821 // figure out more details about the state of the header in order to |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1822 // know what operations can be legally performed on the object's |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1823 // header. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1824 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1825 // If the low three bits in the xor result aren't clear, that means |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1826 // the prototype header is no longer biased and we have to revoke |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1827 // the bias on this object. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1828 andi(temp2_reg, temp_reg, markOopDesc::biased_lock_mask_in_place); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1829 cmpwi(cr_reg, temp2_reg, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1830 bne(cr_reg, try_revoke_bias); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1831 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1832 // Biasing is still enabled for this data type. See whether the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1833 // epoch of the current bias is still valid, meaning that the epoch |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1834 // bits of the mark word are equal to the epoch bits of the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1835 // prototype header. (Note that the prototype header's epoch bits |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1836 // only change at a safepoint.) If not, attempt to rebias the object |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1837 // toward the current thread. Note that we must be absolutely sure |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1838 // that the current epoch is invalid in order to do this because |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1839 // otherwise the manipulations it performs on the mark word are |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1840 // illegal. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1841 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1842 int shift_amount = 64 - markOopDesc::epoch_shift; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1843 // rotate epoch bits to right (little) end and set other bits to 0 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1844 // [ big part | epoch | little part ] -> [ 0..0 | epoch ] |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1845 rldicl_(temp2_reg, temp_reg, shift_amount, 64 - markOopDesc::epoch_bits); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1846 // branch if epoch bits are != 0, i.e. they differ, because the epoch has been incremented |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1847 bne(CCR0, try_rebias); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1848 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1849 // The epoch of the current bias is still valid but we know nothing |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1850 // about the owner; it might be set or it might be clear. Try to |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1851 // acquire the bias of the object using an atomic operation. If this |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1852 // fails we will go in to the runtime to revoke the object's bias. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1853 // Note that we first construct the presumed unbiased header so we |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1854 // don't accidentally blow away another thread's valid bias. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1855 andi(mark_reg, mark_reg, (markOopDesc::biased_lock_mask_in_place | |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1856 markOopDesc::age_mask_in_place | |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1857 markOopDesc::epoch_mask_in_place)); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1858 orr(temp_reg, R16_thread, mark_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1859 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1860 assert(oopDesc::mark_offset_in_bytes() == 0, "offset of _mark is not 0"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1861 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1862 // CmpxchgX sets cr_reg to cmpX(temp2_reg, mark_reg). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1863 fence(); // TODO: replace by MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq ? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1864 cmpxchgd(/*flag=*/cr_reg, /*current_value=*/temp2_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1865 /*compare_value=*/mark_reg, /*exchange_value=*/temp_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1866 /*where=*/obj_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1867 MacroAssembler::MemBarAcq, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1868 MacroAssembler::cmpxchgx_hint_acquire_lock(), |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1869 noreg, slow_case_int); // bail out if failed |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1870 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1871 // If the biasing toward our thread failed, this means that |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1872 // another thread succeeded in biasing it toward itself and we |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1873 // need to revoke that bias. The revocation will occur in the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1874 // interpreter runtime in the slow case. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1875 if (PrintBiasedLockingStatistics) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1876 load_const(temp_reg, (address) BiasedLocking::anonymously_biased_lock_entry_count_addr(), temp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1877 lwz(temp2_reg, 0, temp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1878 addi(temp2_reg, temp2_reg, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1879 stw(temp2_reg, 0, temp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1880 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1881 b(done); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1882 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1883 bind(try_rebias); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1884 // At this point we know the epoch has expired, meaning that the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1885 // current "bias owner", if any, is actually invalid. Under these |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1886 // circumstances _only_, we are allowed to use the current header's |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1887 // value as the comparison value when doing the cas to acquire the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1888 // bias in the current epoch. In other words, we allow transfer of |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1889 // the bias from one thread to another directly in this situation. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1890 andi(temp_reg, mark_reg, markOopDesc::age_mask_in_place); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1891 orr(temp_reg, R16_thread, temp_reg); |
17807 | 1892 load_klass(temp2_reg, obj_reg); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1893 ld(temp2_reg, in_bytes(Klass::prototype_header_offset()), temp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1894 orr(temp_reg, temp_reg, temp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1895 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1896 assert(oopDesc::mark_offset_in_bytes() == 0, "offset of _mark is not 0"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1897 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1898 // CmpxchgX sets cr_reg to cmpX(temp2_reg, mark_reg). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1899 fence(); // TODO: replace by MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq ? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1900 cmpxchgd(/*flag=*/cr_reg, /*current_value=*/temp2_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1901 /*compare_value=*/mark_reg, /*exchange_value=*/temp_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1902 /*where=*/obj_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1903 MacroAssembler::MemBarAcq, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1904 MacroAssembler::cmpxchgx_hint_acquire_lock(), |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1905 noreg, slow_case_int); // bail out if failed |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1906 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1907 // If the biasing toward our thread failed, this means that |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1908 // another thread succeeded in biasing it toward itself and we |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1909 // need to revoke that bias. The revocation will occur in the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1910 // interpreter runtime in the slow case. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1911 if (PrintBiasedLockingStatistics) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1912 load_const(temp_reg, (address) BiasedLocking::rebiased_lock_entry_count_addr(), temp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1913 lwz(temp2_reg, 0, temp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1914 addi(temp2_reg, temp2_reg, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1915 stw(temp2_reg, 0, temp_reg); |
ec28f9c041ff
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1916 } |
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1917 b(done); |
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|
1918 |
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1919 bind(try_revoke_bias); |
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1920 // The prototype mark in the klass doesn't have the bias bit set any |
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|
1921 // more, indicating that objects of this data type are not supposed |
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|
1922 // to be biased any more. We are going to try to reset the mark of |
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parents:
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|
1923 // this object to the prototype value and fall through to the |
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parents:
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|
1924 // CAS-based locking scheme. Note that if our CAS fails, it means |
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|
1925 // that another thread raced us for the privilege of revoking the |
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|
1926 // bias of this particular object, so it's okay to continue in the |
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1927 // normal locking code. |
17807 | 1928 load_klass(temp_reg, obj_reg); |
14408
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1929 ld(temp_reg, in_bytes(Klass::prototype_header_offset()), temp_reg); |
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1930 andi(temp2_reg, mark_reg, markOopDesc::age_mask_in_place); |
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1931 orr(temp_reg, temp_reg, temp2_reg); |
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|
1932 |
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1933 assert(oopDesc::mark_offset_in_bytes() == 0, "offset of _mark is not 0"); |
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|
1934 |
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1935 // CmpxchgX sets cr_reg to cmpX(temp2_reg, mark_reg). |
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1936 fence(); // TODO: replace by MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq ? |
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1937 cmpxchgd(/*flag=*/cr_reg, /*current_value=*/temp2_reg, |
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1938 /*compare_value=*/mark_reg, /*exchange_value=*/temp_reg, |
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1939 /*where=*/obj_reg, |
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1940 MacroAssembler::MemBarAcq, |
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parents:
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|
1941 MacroAssembler::cmpxchgx_hint_acquire_lock()); |
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|
1942 |
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1943 // reload markOop in mark_reg before continuing with lightweight locking |
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|
1944 ld(mark_reg, oopDesc::mark_offset_in_bytes(), obj_reg); |
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|
1945 |
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|
1946 // Fall through to the normal CAS-based lock, because no matter what |
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1947 // the result of the above CAS, some thread must have succeeded in |
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|
1948 // removing the bias bit from the object's header. |
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parents:
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|
1949 if (PrintBiasedLockingStatistics) { |
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parents:
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|
1950 Label l; |
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parents:
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|
1951 bne(cr_reg, l); |
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|
1952 load_const(temp_reg, (address) BiasedLocking::revoked_lock_entry_count_addr(), temp2_reg); |
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1953 lwz(temp2_reg, 0, temp_reg); |
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1954 addi(temp2_reg, temp2_reg, 1); |
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|
1955 stw(temp2_reg, 0, temp_reg); |
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|
1956 bind(l); |
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|
1957 } |
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|
1958 |
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|
1959 bind(cas_label); |
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|
1960 } |
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|
1961 |
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|
1962 void MacroAssembler::biased_locking_exit (ConditionRegister cr_reg, Register mark_addr, Register temp_reg, Label& done) { |
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1963 // Check for biased locking unlock case, which is a no-op |
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1964 // Note: we do not have to check the thread ID for two reasons. |
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|
1965 // First, the interpreter checks for IllegalMonitorStateException at |
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|
1966 // a higher level. Second, if the bias was revoked while we held the |
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|
1967 // lock, the object could not be rebiased toward another thread, so |
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|
1968 // the bias bit would be clear. |
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|
1969 |
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|
1970 ld(temp_reg, 0, mark_addr); |
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|
1971 andi(temp_reg, temp_reg, markOopDesc::biased_lock_mask_in_place); |
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|
1972 |
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|
1973 cmpwi(cr_reg, temp_reg, markOopDesc::biased_lock_pattern); |
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|
1974 beq(cr_reg, done); |
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|
1975 } |
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|
1976 |
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|
1977 // "The box" is the space on the stack where we copy the object mark. |
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1978 void MacroAssembler::compiler_fast_lock_object(ConditionRegister flag, Register oop, Register box, |
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1979 Register temp, Register displaced_header, Register current_header) { |
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|
1980 assert_different_registers(oop, box, temp, displaced_header, current_header); |
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|
1981 assert(flag != CCR0, "bad condition register"); |
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|
1982 Label cont; |
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|
1983 Label object_has_monitor; |
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|
1984 Label cas_failed; |
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|
1985 |
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|
1986 // Load markOop from object into displaced_header. |
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|
1987 ld(displaced_header, oopDesc::mark_offset_in_bytes(), oop); |
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|
1988 |
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parents:
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|
1989 |
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|
1990 // Always do locking in runtime. |
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|
1991 if (EmitSync & 0x01) { |
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|
1992 cmpdi(flag, oop, 0); // Oop can't be 0 here => always false. |
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|
1993 return; |
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|
1994 } |
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|
1995 |
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|
1996 if (UseBiasedLocking) { |
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|
1997 biased_locking_enter(flag, oop, displaced_header, temp, current_header, cont); |
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|
1998 } |
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|
1999 |
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|
2000 // Handle existing monitor. |
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parents:
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|
2001 if ((EmitSync & 0x02) == 0) { |
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|
2002 // The object has an existing monitor iff (mark & monitor_value) != 0. |
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|
2003 andi_(temp, displaced_header, markOopDesc::monitor_value); |
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|
2004 bne(CCR0, object_has_monitor); |
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parents:
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|
2005 } |
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parents:
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|
2006 |
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|
2007 // Set displaced_header to be (markOop of object | UNLOCK_VALUE). |
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|
2008 ori(displaced_header, displaced_header, markOopDesc::unlocked_value); |
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parents:
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|
2009 |
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parents:
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|
2010 // Load Compare Value application register. |
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|
2011 |
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|
2012 // Initialize the box. (Must happen before we update the object mark!) |
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|
2013 std(displaced_header, BasicLock::displaced_header_offset_in_bytes(), box); |
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parents:
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|
2014 |
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parents:
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|
2015 // Must fence, otherwise, preceding store(s) may float below cmpxchg. |
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|
2016 // Compare object markOop with mark and if equal exchange scratch1 with object markOop. |
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|
2017 // CmpxchgX sets cr_reg to cmpX(current, displaced). |
17793 | 2018 membar(Assembler::StoreStore); |
14408
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parents:
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|
2019 cmpxchgd(/*flag=*/flag, |
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parents:
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|
2020 /*current_value=*/current_header, |
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parents:
diff
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|
2021 /*compare_value=*/displaced_header, |
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parents:
diff
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|
2022 /*exchange_value=*/box, |
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parents:
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|
2023 /*where=*/oop, |
17793 | 2024 MacroAssembler::MemBarAcq, |
14408
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|
2025 MacroAssembler::cmpxchgx_hint_acquire_lock(), |
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diff
changeset
|
2026 noreg, |
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|
2027 &cas_failed); |
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|
2028 assert(oopDesc::mark_offset_in_bytes() == 0, "offset of _mark is not 0"); |
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|
2029 |
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|
2030 // If the compare-and-exchange succeeded, then we found an unlocked |
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parents:
diff
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|
2031 // object and we have now locked it. |
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|
2032 b(cont); |
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parents:
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|
2033 |
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parents:
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changeset
|
2034 bind(cas_failed); |
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|
2035 // We did not see an unlocked object so try the fast recursive case. |
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parents:
diff
changeset
|
2036 |
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parents:
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|
2037 // Check if the owner is self by comparing the value in the markOop of object |
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parents:
diff
changeset
|
2038 // (current_header) with the stack pointer. |
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parents:
diff
changeset
|
2039 sub(current_header, current_header, R1_SP); |
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|
2040 load_const_optimized(temp, (address) (~(os::vm_page_size()-1) | |
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parents:
diff
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|
2041 markOopDesc::lock_mask_in_place)); |
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parents:
diff
changeset
|
2042 |
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parents:
diff
changeset
|
2043 and_(R0/*==0?*/, current_header, temp); |
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parents:
diff
changeset
|
2044 // If condition is true we are cont and hence we can store 0 as the |
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parents:
diff
changeset
|
2045 // displaced header in the box, which indicates that it is a recursive lock. |
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parents:
diff
changeset
|
2046 mcrf(flag,CCR0); |
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parents:
diff
changeset
|
2047 std(R0/*==0, perhaps*/, BasicLock::displaced_header_offset_in_bytes(), box); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2048 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2049 // Handle existing monitor. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2050 if ((EmitSync & 0x02) == 0) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2051 b(cont); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2052 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2053 bind(object_has_monitor); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2054 // The object's monitor m is unlocked iff m->owner == NULL, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2055 // otherwise m->owner may contain a thread or a stack address. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2056 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2057 // Try to CAS m->owner from NULL to current thread. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2058 addi(temp, displaced_header, ObjectMonitor::owner_offset_in_bytes()-markOopDesc::monitor_value); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2059 li(displaced_header, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2060 // CmpxchgX sets flag to cmpX(current, displaced). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2061 cmpxchgd(/*flag=*/flag, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2062 /*current_value=*/current_header, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2063 /*compare_value=*/displaced_header, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2064 /*exchange_value=*/R16_thread, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2065 /*where=*/temp, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2066 MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2067 MacroAssembler::cmpxchgx_hint_acquire_lock()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2068 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2069 // Store a non-null value into the box. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2070 std(box, BasicLock::displaced_header_offset_in_bytes(), box); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2071 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2072 # ifdef ASSERT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2073 bne(flag, cont); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2074 // We have acquired the monitor, check some invariants. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2075 addi(/*monitor=*/temp, temp, -ObjectMonitor::owner_offset_in_bytes()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2076 // Invariant 1: _recursions should be 0. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2077 //assert(ObjectMonitor::recursions_size_in_bytes() == 8, "unexpected size"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2078 asm_assert_mem8_is_zero(ObjectMonitor::recursions_offset_in_bytes(), temp, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2079 "monitor->_recursions should be 0", -1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2080 // Invariant 2: OwnerIsThread shouldn't be 0. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2081 //assert(ObjectMonitor::OwnerIsThread_size_in_bytes() == 4, "unexpected size"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2082 //asm_assert_mem4_isnot_zero(ObjectMonitor::OwnerIsThread_offset_in_bytes(), temp, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2083 // "monitor->OwnerIsThread shouldn't be 0", -1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2084 # endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2085 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2086 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2087 bind(cont); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2088 // flag == EQ indicates success |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2089 // flag == NE indicates failure |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2090 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2091 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2092 void MacroAssembler::compiler_fast_unlock_object(ConditionRegister flag, Register oop, Register box, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2093 Register temp, Register displaced_header, Register current_header) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2094 assert_different_registers(oop, box, temp, displaced_header, current_header); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2095 assert(flag != CCR0, "bad condition register"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2096 Label cont; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2097 Label object_has_monitor; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2098 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2099 // Always do locking in runtime. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2100 if (EmitSync & 0x01) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2101 cmpdi(flag, oop, 0); // Oop can't be 0 here => always false. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2102 return; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2103 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2104 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2105 if (UseBiasedLocking) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2106 biased_locking_exit(flag, oop, current_header, cont); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2107 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2108 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2109 // Find the lock address and load the displaced header from the stack. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2110 ld(displaced_header, BasicLock::displaced_header_offset_in_bytes(), box); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2111 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2112 // If the displaced header is 0, we have a recursive unlock. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2113 cmpdi(flag, displaced_header, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2114 beq(flag, cont); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2115 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2116 // Handle existing monitor. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2117 if ((EmitSync & 0x02) == 0) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2118 // The object has an existing monitor iff (mark & monitor_value) != 0. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2119 ld(current_header, oopDesc::mark_offset_in_bytes(), oop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2120 andi(temp, current_header, markOopDesc::monitor_value); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2121 cmpdi(flag, temp, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2122 bne(flag, object_has_monitor); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2123 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2124 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2125 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2126 // Check if it is still a light weight lock, this is is true if we see |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2127 // the stack address of the basicLock in the markOop of the object. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2128 // Cmpxchg sets flag to cmpd(current_header, box). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2129 cmpxchgd(/*flag=*/flag, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2130 /*current_value=*/current_header, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2131 /*compare_value=*/box, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2132 /*exchange_value=*/displaced_header, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2133 /*where=*/oop, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2134 MacroAssembler::MemBarRel, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2135 MacroAssembler::cmpxchgx_hint_release_lock(), |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2136 noreg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2137 &cont); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2138 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2139 assert(oopDesc::mark_offset_in_bytes() == 0, "offset of _mark is not 0"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2140 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2141 // Handle existing monitor. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2142 if ((EmitSync & 0x02) == 0) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2143 b(cont); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2144 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2145 bind(object_has_monitor); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2146 addi(current_header, current_header, -markOopDesc::monitor_value); // monitor |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2147 ld(temp, ObjectMonitor::owner_offset_in_bytes(), current_header); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2148 ld(displaced_header, ObjectMonitor::recursions_offset_in_bytes(), current_header); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2149 xorr(temp, R16_thread, temp); // Will be 0 if we are the owner. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2150 orr(temp, temp, displaced_header); // Will be 0 if there are 0 recursions. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2151 cmpdi(flag, temp, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2152 bne(flag, cont); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2153 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2154 ld(temp, ObjectMonitor::EntryList_offset_in_bytes(), current_header); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2155 ld(displaced_header, ObjectMonitor::cxq_offset_in_bytes(), current_header); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2156 orr(temp, temp, displaced_header); // Will be 0 if both are 0. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2157 cmpdi(flag, temp, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2158 bne(flag, cont); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2159 release(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2160 std(temp, ObjectMonitor::owner_offset_in_bytes(), current_header); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2161 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2162 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2163 bind(cont); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2164 // flag == EQ indicates success |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2165 // flag == NE indicates failure |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2166 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2167 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2168 // Write serialization page so VM thread can do a pseudo remote membar. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2169 // We use the current thread pointer to calculate a thread specific |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2170 // offset to write to within the page. This minimizes bus traffic |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2171 // due to cache line collision. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2172 void MacroAssembler::serialize_memory(Register thread, Register tmp1, Register tmp2) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2173 srdi(tmp2, thread, os::get_serialize_page_shift_count()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2174 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2175 int mask = os::vm_page_size() - sizeof(int); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2176 if (Assembler::is_simm(mask, 16)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2177 andi(tmp2, tmp2, mask); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2178 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2179 lis(tmp1, (int)((signed short) (mask >> 16))); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2180 ori(tmp1, tmp1, mask & 0x0000ffff); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2181 andr(tmp2, tmp2, tmp1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2182 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2183 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2184 load_const(tmp1, (long) os::get_memory_serialize_page()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2185 release(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2186 stwx(R0, tmp1, tmp2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2187 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2188 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2189 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2190 // GC barrier helper macros |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2191 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2192 // Write the card table byte if needed. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2193 void MacroAssembler::card_write_barrier_post(Register Rstore_addr, Register Rnew_val, Register Rtmp) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2194 CardTableModRefBS* bs = (CardTableModRefBS*) Universe::heap()->barrier_set(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2195 assert(bs->kind() == BarrierSet::CardTableModRef || |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2196 bs->kind() == BarrierSet::CardTableExtension, "wrong barrier"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2197 #ifdef ASSERT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2198 cmpdi(CCR0, Rnew_val, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2199 asm_assert_ne("null oop not allowed", 0x321); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2200 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2201 card_table_write(bs->byte_map_base, Rtmp, Rstore_addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2202 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2203 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2204 // Write the card table byte. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2205 void MacroAssembler::card_table_write(jbyte* byte_map_base, Register Rtmp, Register Robj) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2206 assert_different_registers(Robj, Rtmp, R0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2207 load_const_optimized(Rtmp, (address)byte_map_base, R0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2208 srdi(Robj, Robj, CardTableModRefBS::card_shift); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2209 li(R0, 0); // dirty |
17793 | 2210 if (UseConcMarkSweepGC) membar(Assembler::StoreStore); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2211 stbx(R0, Rtmp, Robj); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2212 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2213 |
17807 | 2214 #if INCLUDE_ALL_GCS |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2215 // General G1 pre-barrier generator. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2216 // Goal: record the previous value if it is not null. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2217 void MacroAssembler::g1_write_barrier_pre(Register Robj, RegisterOrConstant offset, Register Rpre_val, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2218 Register Rtmp1, Register Rtmp2, bool needs_frame) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2219 Label runtime, filtered; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2220 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2221 // Is marking active? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2222 if (in_bytes(PtrQueue::byte_width_of_active()) == 4) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2223 lwz(Rtmp1, in_bytes(JavaThread::satb_mark_queue_offset() + PtrQueue::byte_offset_of_active()), R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2224 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2225 guarantee(in_bytes(PtrQueue::byte_width_of_active()) == 1, "Assumption"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2226 lbz(Rtmp1, in_bytes(JavaThread::satb_mark_queue_offset() + PtrQueue::byte_offset_of_active()), R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2227 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2228 cmpdi(CCR0, Rtmp1, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2229 beq(CCR0, filtered); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2230 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2231 // Do we need to load the previous value? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2232 if (Robj != noreg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2233 // Load the previous value... |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2234 if (UseCompressedOops) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2235 lwz(Rpre_val, offset, Robj); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2236 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2237 ld(Rpre_val, offset, Robj); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2238 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2239 // Previous value has been loaded into Rpre_val. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2240 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2241 assert(Rpre_val != noreg, "must have a real register"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2242 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2243 // Is the previous value null? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2244 cmpdi(CCR0, Rpre_val, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2245 beq(CCR0, filtered); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2246 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2247 if (Robj != noreg && UseCompressedOops) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2248 decode_heap_oop_not_null(Rpre_val); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2249 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2250 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2251 // OK, it's not filtered, so we'll need to call enqueue. In the normal |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2252 // case, pre_val will be a scratch G-reg, but there are some cases in |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2253 // which it's an O-reg. In the first case, do a normal call. In the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2254 // latter, do a save here and call the frameless version. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2255 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2256 // Can we store original value in the thread's buffer? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2257 // Is index == 0? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2258 // (The index field is typed as size_t.) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2259 const Register Rbuffer = Rtmp1, Rindex = Rtmp2; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2260 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2261 ld(Rindex, in_bytes(JavaThread::satb_mark_queue_offset() + PtrQueue::byte_offset_of_index()), R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2262 cmpdi(CCR0, Rindex, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2263 beq(CCR0, runtime); // If index == 0, goto runtime. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2264 ld(Rbuffer, in_bytes(JavaThread::satb_mark_queue_offset() + PtrQueue::byte_offset_of_buf()), R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2265 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2266 addi(Rindex, Rindex, -wordSize); // Decrement index. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2267 std(Rindex, in_bytes(JavaThread::satb_mark_queue_offset() + PtrQueue::byte_offset_of_index()), R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2268 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2269 // Record the previous value. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2270 stdx(Rpre_val, Rbuffer, Rindex); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2271 b(filtered); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2272 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2273 bind(runtime); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2274 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2275 // VM call need frame to access(write) O register. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2276 if (needs_frame) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2277 save_LR_CR(Rtmp1); |
17803 | 2278 push_frame_reg_args(0, Rtmp2); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2279 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2280 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2281 if (Rpre_val->is_volatile() && Robj == noreg) mr(R31, Rpre_val); // Save pre_val across C call if it was preloaded. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2282 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::g1_wb_pre), Rpre_val, R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2283 if (Rpre_val->is_volatile() && Robj == noreg) mr(Rpre_val, R31); // restore |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2284 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2285 if (needs_frame) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2286 pop_frame(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2287 restore_LR_CR(Rtmp1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2288 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2289 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2290 bind(filtered); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2291 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2292 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2293 // General G1 post-barrier generator |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2294 // Store cross-region card. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2295 void MacroAssembler::g1_write_barrier_post(Register Rstore_addr, Register Rnew_val, Register Rtmp1, Register Rtmp2, Register Rtmp3, Label *filtered_ext) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2296 Label runtime, filtered_int; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2297 Label& filtered = (filtered_ext != NULL) ? *filtered_ext : filtered_int; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2298 assert_different_registers(Rstore_addr, Rnew_val, Rtmp1, Rtmp2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2299 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2300 G1SATBCardTableModRefBS* bs = (G1SATBCardTableModRefBS*) Universe::heap()->barrier_set(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2301 assert(bs->kind() == BarrierSet::G1SATBCT || |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2302 bs->kind() == BarrierSet::G1SATBCTLogging, "wrong barrier"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2303 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2304 // Does store cross heap regions? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2305 if (G1RSBarrierRegionFilter) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2306 xorr(Rtmp1, Rstore_addr, Rnew_val); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2307 srdi_(Rtmp1, Rtmp1, HeapRegion::LogOfHRGrainBytes); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2308 beq(CCR0, filtered); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2309 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2310 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2311 // Crosses regions, storing NULL? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2312 #ifdef ASSERT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2313 cmpdi(CCR0, Rnew_val, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2314 asm_assert_ne("null oop not allowed (G1)", 0x322); // Checked by caller on PPC64, so following branch is obsolete: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2315 //beq(CCR0, filtered); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2316 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2317 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2318 // Storing region crossing non-NULL, is card already dirty? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2319 assert(sizeof(*bs->byte_map_base) == sizeof(jbyte), "adjust this code"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2320 const Register Rcard_addr = Rtmp1; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2321 Register Rbase = Rtmp2; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2322 load_const_optimized(Rbase, (address)bs->byte_map_base, /*temp*/ Rtmp3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2323 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2324 srdi(Rcard_addr, Rstore_addr, CardTableModRefBS::card_shift); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2325 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2326 // Get the address of the card. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2327 lbzx(/*card value*/ Rtmp3, Rbase, Rcard_addr); |
17807 | 2328 cmpwi(CCR0, Rtmp3, (int)G1SATBCardTableModRefBS::g1_young_card_val()); |
2329 beq(CCR0, filtered); | |
2330 | |
2331 membar(Assembler::StoreLoad); | |
2332 lbzx(/*card value*/ Rtmp3, Rbase, Rcard_addr); // Reload after membar. | |
2333 cmpwi(CCR0, Rtmp3 /* card value */, CardTableModRefBS::dirty_card_val()); | |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2334 beq(CCR0, filtered); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2335 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2336 // Storing a region crossing, non-NULL oop, card is clean. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2337 // Dirty card and log. |
17807 | 2338 li(Rtmp3, CardTableModRefBS::dirty_card_val()); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2339 //release(); // G1: oops are allowed to get visible after dirty marking. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2340 stbx(Rtmp3, Rbase, Rcard_addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2341 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2342 add(Rcard_addr, Rbase, Rcard_addr); // This is the address which needs to get enqueued. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2343 Rbase = noreg; // end of lifetime |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2344 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2345 const Register Rqueue_index = Rtmp2, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2346 Rqueue_buf = Rtmp3; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2347 ld(Rqueue_index, in_bytes(JavaThread::dirty_card_queue_offset() + PtrQueue::byte_offset_of_index()), R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2348 cmpdi(CCR0, Rqueue_index, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2349 beq(CCR0, runtime); // index == 0 then jump to runtime |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2350 ld(Rqueue_buf, in_bytes(JavaThread::dirty_card_queue_offset() + PtrQueue::byte_offset_of_buf()), R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2351 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2352 addi(Rqueue_index, Rqueue_index, -wordSize); // decrement index |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2353 std(Rqueue_index, in_bytes(JavaThread::dirty_card_queue_offset() + PtrQueue::byte_offset_of_index()), R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2354 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2355 stdx(Rcard_addr, Rqueue_buf, Rqueue_index); // store card |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2356 b(filtered); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2357 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2358 bind(runtime); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2359 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2360 // Save the live input values. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2361 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::g1_wb_post), Rcard_addr, R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2362 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2363 bind(filtered_int); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2364 } |
17807 | 2365 #endif // INCLUDE_ALL_GCS |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2366 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2367 // Values for last_Java_pc, and last_Java_sp must comply to the rules |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2368 // in frame_ppc64.hpp. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2369 void MacroAssembler::set_last_Java_frame(Register last_Java_sp, Register last_Java_pc) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2370 // Always set last_Java_pc and flags first because once last_Java_sp |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2371 // is visible has_last_Java_frame is true and users will look at the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2372 // rest of the fields. (Note: flags should always be zero before we |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2373 // get here so doesn't need to be set.) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2374 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2375 // Verify that last_Java_pc was zeroed on return to Java |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2376 asm_assert_mem8_is_zero(in_bytes(JavaThread::last_Java_pc_offset()), R16_thread, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2377 "last_Java_pc not zeroed before leaving Java", 0x200); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2378 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2379 // When returning from calling out from Java mode the frame anchor's |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2380 // last_Java_pc will always be set to NULL. It is set here so that |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2381 // if we are doing a call to native (not VM) that we capture the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2382 // known pc and don't have to rely on the native call having a |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2383 // standard frame linkage where we can find the pc. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2384 if (last_Java_pc != noreg) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2385 std(last_Java_pc, in_bytes(JavaThread::last_Java_pc_offset()), R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2386 |
14445 | 2387 // Set last_Java_sp last. |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2388 std(last_Java_sp, in_bytes(JavaThread::last_Java_sp_offset()), R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2389 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2390 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2391 void MacroAssembler::reset_last_Java_frame(void) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2392 asm_assert_mem8_isnot_zero(in_bytes(JavaThread::last_Java_sp_offset()), |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2393 R16_thread, "SP was not set, still zero", 0x202); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2394 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2395 BLOCK_COMMENT("reset_last_Java_frame {"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2396 li(R0, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2397 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2398 // _last_Java_sp = 0 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2399 std(R0, in_bytes(JavaThread::last_Java_sp_offset()), R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2400 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2401 // _last_Java_pc = 0 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2402 std(R0, in_bytes(JavaThread::last_Java_pc_offset()), R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2403 BLOCK_COMMENT("} reset_last_Java_frame"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2404 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2405 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2406 void MacroAssembler::set_top_ijava_frame_at_SP_as_last_Java_frame(Register sp, Register tmp1) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2407 assert_different_registers(sp, tmp1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2408 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2409 // sp points to a TOP_IJAVA_FRAME, retrieve frame's PC via |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2410 // TOP_IJAVA_FRAME_ABI. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2411 // FIXME: assert that we really have a TOP_IJAVA_FRAME here! |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2412 #ifdef CC_INTERP |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2413 ld(tmp1/*pc*/, _top_ijava_frame_abi(frame_manager_lr), sp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2414 #else |
17804 | 2415 address entry = pc(); |
2416 load_const_optimized(tmp1, entry); | |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2417 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2418 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2419 set_last_Java_frame(/*sp=*/sp, /*pc=*/tmp1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2420 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2421 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2422 void MacroAssembler::get_vm_result(Register oop_result) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2423 // Read: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2424 // R16_thread |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2425 // R16_thread->in_bytes(JavaThread::vm_result_offset()) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2426 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2427 // Updated: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2428 // oop_result |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2429 // R16_thread->in_bytes(JavaThread::vm_result_offset()) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2430 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2431 ld(oop_result, in_bytes(JavaThread::vm_result_offset()), R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2432 li(R0, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2433 std(R0, in_bytes(JavaThread::vm_result_offset()), R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2434 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2435 verify_oop(oop_result); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2436 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2437 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2438 void MacroAssembler::get_vm_result_2(Register metadata_result) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2439 // Read: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2440 // R16_thread |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2441 // R16_thread->in_bytes(JavaThread::vm_result_2_offset()) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2442 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2443 // Updated: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2444 // metadata_result |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2445 // R16_thread->in_bytes(JavaThread::vm_result_2_offset()) |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2446 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2447 ld(metadata_result, in_bytes(JavaThread::vm_result_2_offset()), R16_thread); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2448 li(R0, 0); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2449 std(R0, in_bytes(JavaThread::vm_result_2_offset()), R16_thread); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2450 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2451 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff
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|
2452 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff
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|
2453 void MacroAssembler::encode_klass_not_null(Register dst, Register src) { |
17793 | 2454 Register current = (src != noreg) ? src : dst; // Klass is in dst if no src provided. |
14427
eb178e97560c
8027968: Adapt PPC to 8024927: Nashorn performance regression with CompressedOops
goetz
parents:
14424
diff
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|
2455 if (Universe::narrow_klass_base() != 0) { |
17807 | 2456 // Use dst as temp if it is free. |
2457 load_const(R0, Universe::narrow_klass_base(), (dst != current && dst != R0) ? dst : noreg); | |
17793 | 2458 sub(dst, current, R0); |
2459 current = dst; | |
14427
eb178e97560c
8027968: Adapt PPC to 8024927: Nashorn performance regression with CompressedOops
goetz
parents:
14424
diff
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|
2460 } |
17793 | 2461 if (Universe::narrow_klass_shift() != 0) { |
2462 srdi(dst, current, Universe::narrow_klass_shift()); | |
2463 current = dst; | |
14408
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff
changeset
|
2464 } |
17793 | 2465 mr_if_needed(dst, current); // Move may be required. |
14408
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parents:
diff
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|
2466 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2467 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff
changeset
|
2468 void MacroAssembler::store_klass(Register dst_oop, Register klass, Register ck) { |
14424
a0d02bb625e2
8027965: Adapt PPC to 8015107: NPG: Use consistent naming for metaspace concepts
goetz
parents:
14413
diff
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|
2469 if (UseCompressedClassPointers) { |
14408
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff
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|
2470 encode_klass_not_null(ck, klass); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff
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|
2471 stw(ck, oopDesc::klass_offset_in_bytes(), dst_oop); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff
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|
2472 } else { |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff
changeset
|
2473 std(klass, oopDesc::klass_offset_in_bytes(), dst_oop); |
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diff
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|
2474 } |
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diff
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|
2475 } |
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diff
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|
2476 |
17804 | 2477 void MacroAssembler::store_klass_gap(Register dst_oop, Register val) { |
2478 if (UseCompressedClassPointers) { | |
2479 if (val == noreg) { | |
2480 val = R0; | |
2481 li(val, 0); | |
2482 } | |
2483 stw(val, oopDesc::klass_gap_offset_in_bytes(), dst_oop); // klass gap if compressed | |
2484 } | |
2485 } | |
2486 | |
14427
eb178e97560c
8027968: Adapt PPC to 8024927: Nashorn performance regression with CompressedOops
goetz
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14424
diff
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|
2487 int MacroAssembler::instr_size_for_decode_klass_not_null() { |
eb178e97560c
8027968: Adapt PPC to 8024927: Nashorn performance regression with CompressedOops
goetz
parents:
14424
diff
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|
2488 if (!UseCompressedClassPointers) return 0; |
eb178e97560c
8027968: Adapt PPC to 8024927: Nashorn performance regression with CompressedOops
goetz
parents:
14424
diff
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|
2489 int num_instrs = 1; // shift or move |
eb178e97560c
8027968: Adapt PPC to 8024927: Nashorn performance regression with CompressedOops
goetz
parents:
14424
diff
changeset
|
2490 if (Universe::narrow_klass_base() != 0) num_instrs = 7; // shift + load const + add |
eb178e97560c
8027968: Adapt PPC to 8024927: Nashorn performance regression with CompressedOops
goetz
parents:
14424
diff
changeset
|
2491 return num_instrs * BytesPerInstWord; |
eb178e97560c
8027968: Adapt PPC to 8024927: Nashorn performance regression with CompressedOops
goetz
parents:
14424
diff
changeset
|
2492 } |
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goetz
parents:
14424
diff
changeset
|
2493 |
14408
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diff
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|
2494 void MacroAssembler::decode_klass_not_null(Register dst, Register src) { |
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|
2495 if (src == noreg) src = dst; |
14413 | 2496 Register shifted_src = src; |
14427
eb178e97560c
8027968: Adapt PPC to 8024927: Nashorn performance regression with CompressedOops
goetz
parents:
14424
diff
changeset
|
2497 if (Universe::narrow_klass_shift() != 0 || |
eb178e97560c
8027968: Adapt PPC to 8024927: Nashorn performance regression with CompressedOops
goetz
parents:
14424
diff
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|
2498 Universe::narrow_klass_base() == 0 && src != dst) { // Move required. |
14413 | 2499 shifted_src = dst; |
2500 sldi(shifted_src, src, Universe::narrow_klass_shift()); | |
14408
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diff
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|
2501 } |
14427
eb178e97560c
8027968: Adapt PPC to 8024927: Nashorn performance regression with CompressedOops
goetz
parents:
14424
diff
changeset
|
2502 if (Universe::narrow_klass_base() != 0) { |
eb178e97560c
8027968: Adapt PPC to 8024927: Nashorn performance regression with CompressedOops
goetz
parents:
14424
diff
changeset
|
2503 load_const(R0, Universe::narrow_klass_base()); |
eb178e97560c
8027968: Adapt PPC to 8024927: Nashorn performance regression with CompressedOops
goetz
parents:
14424
diff
changeset
|
2504 add(dst, shifted_src, R0); |
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8027968: Adapt PPC to 8024927: Nashorn performance regression with CompressedOops
goetz
parents:
14424
diff
changeset
|
2505 } |
14408
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parents:
diff
changeset
|
2506 } |
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diff
changeset
|
2507 |
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diff
changeset
|
2508 void MacroAssembler::load_klass(Register dst, Register src) { |
14424
a0d02bb625e2
8027965: Adapt PPC to 8015107: NPG: Use consistent naming for metaspace concepts
goetz
parents:
14413
diff
changeset
|
2509 if (UseCompressedClassPointers) { |
14408
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diff
changeset
|
2510 lwz(dst, oopDesc::klass_offset_in_bytes(), src); |
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diff
changeset
|
2511 // Attention: no null check here! |
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diff
changeset
|
2512 decode_klass_not_null(dst, dst); |
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diff
changeset
|
2513 } else { |
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diff
changeset
|
2514 ld(dst, oopDesc::klass_offset_in_bytes(), src); |
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parents:
diff
changeset
|
2515 } |
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parents:
diff
changeset
|
2516 } |
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parents:
diff
changeset
|
2517 |
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diff
changeset
|
2518 void MacroAssembler::load_klass_with_trap_null_check(Register dst, Register src) { |
14436
b0133e4187d3
8028471: PPC64 (part 215): opto: Extend ImplicitNullCheck optimization.
goetz
parents:
14427
diff
changeset
|
2519 if (!os::zero_page_read_protected()) { |
14408
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parents:
diff
changeset
|
2520 if (TrapBasedNullChecks) { |
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parents:
diff
changeset
|
2521 trap_null_check(src); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2522 } |
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parents:
diff
changeset
|
2523 } |
ec28f9c041ff
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parents:
diff
changeset
|
2524 load_klass(dst, src); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2525 } |
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diff
changeset
|
2526 |
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diff
changeset
|
2527 void MacroAssembler::reinit_heapbase(Register d, Register tmp) { |
14413 | 2528 if (Universe::heap() != NULL) { |
2529 if (Universe::narrow_oop_base() == NULL) { | |
2530 Assembler::xorr(R30, R30, R30); | |
2531 } else { | |
2532 load_const(R30, Universe::narrow_ptrs_base(), tmp); | |
2533 } | |
2534 } else { | |
14408
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parents:
diff
changeset
|
2535 load_const(R30, Universe::narrow_ptrs_base_addr(), tmp); |
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diff
changeset
|
2536 ld(R30, 0, R30); |
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parents:
diff
changeset
|
2537 } |
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parents:
diff
changeset
|
2538 } |
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diff
changeset
|
2539 |
14445 | 2540 // Clear Array |
2541 // Kills both input registers. tmp == R0 is allowed. | |
2542 void MacroAssembler::clear_memory_doubleword(Register base_ptr, Register cnt_dwords, Register tmp) { | |
2543 // Procedure for large arrays (uses data cache block zero instruction). | |
2544 Label startloop, fast, fastloop, small_rest, restloop, done; | |
2545 const int cl_size = VM_Version::get_cache_line_size(), | |
2546 cl_dwords = cl_size>>3, | |
2547 cl_dw_addr_bits = exact_log2(cl_dwords), | |
2548 dcbz_min = 1; // Min count of dcbz executions, needs to be >0. | |
2549 | |
2550 //2: | |
2551 cmpdi(CCR1, cnt_dwords, ((dcbz_min+1)<<cl_dw_addr_bits)-1); // Big enough? (ensure >=dcbz_min lines included). | |
2552 blt(CCR1, small_rest); // Too small. | |
2553 rldicl_(tmp, base_ptr, 64-3, 64-cl_dw_addr_bits); // Extract dword offset within first cache line. | |
2554 beq(CCR0, fast); // Already 128byte aligned. | |
2555 | |
2556 subfic(tmp, tmp, cl_dwords); | |
2557 mtctr(tmp); // Set ctr to hit 128byte boundary (0<ctr<cl_dwords). | |
2558 subf(cnt_dwords, tmp, cnt_dwords); // rest. | |
2559 li(tmp, 0); | |
2560 //10: | |
2561 bind(startloop); // Clear at the beginning to reach 128byte boundary. | |
2562 std(tmp, 0, base_ptr); // Clear 8byte aligned block. | |
2563 addi(base_ptr, base_ptr, 8); | |
2564 bdnz(startloop); | |
2565 //13: | |
2566 bind(fast); // Clear 128byte blocks. | |
2567 srdi(tmp, cnt_dwords, cl_dw_addr_bits); // Loop count for 128byte loop (>0). | |
2568 andi(cnt_dwords, cnt_dwords, cl_dwords-1); // Rest in dwords. | |
2569 mtctr(tmp); // Load counter. | |
2570 //16: | |
2571 bind(fastloop); | |
2572 dcbz(base_ptr); // Clear 128byte aligned block. | |
2573 addi(base_ptr, base_ptr, cl_size); | |
2574 bdnz(fastloop); | |
2575 if (InsertEndGroupPPC64) { endgroup(); } else { nop(); } | |
2576 //20: | |
2577 bind(small_rest); | |
2578 cmpdi(CCR0, cnt_dwords, 0); // size 0? | |
2579 beq(CCR0, done); // rest == 0 | |
2580 li(tmp, 0); | |
2581 mtctr(cnt_dwords); // Load counter. | |
2582 //24: | |
2583 bind(restloop); // Clear rest. | |
2584 std(tmp, 0, base_ptr); // Clear 8byte aligned block. | |
2585 addi(base_ptr, base_ptr, 8); | |
2586 bdnz(restloop); | |
2587 //27: | |
2588 bind(done); | |
2589 } | |
2590 | |
14408
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parents:
diff
changeset
|
2591 /////////////////////////////////////////// String intrinsics //////////////////////////////////////////// |
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diff
changeset
|
2592 |
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diff
changeset
|
2593 // Search for a single jchar in an jchar[]. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2594 // |
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parents:
diff
changeset
|
2595 // Assumes that result differs from all other registers. |
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diff
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|
2596 // |
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diff
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|
2597 // Haystack, needle are the addresses of jchar-arrays. |
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diff
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|
2598 // NeedleChar is needle[0] if it is known at compile time. |
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diff
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|
2599 // Haycnt is the length of the haystack. We assume haycnt >=1. |
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diff
changeset
|
2600 // |
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diff
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|
2601 // Preserves haystack, haycnt, kills all other registers. |
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diff
changeset
|
2602 // |
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diff
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|
2603 // If needle == R0, we search for the constant needleChar. |
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diff
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|
2604 void MacroAssembler::string_indexof_1(Register result, Register haystack, Register haycnt, |
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parents:
diff
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|
2605 Register needle, jchar needleChar, |
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parents:
diff
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|
2606 Register tmp1, Register tmp2) { |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2607 |
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diff
changeset
|
2608 assert_different_registers(result, haystack, haycnt, needle, tmp1, tmp2); |
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diff
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|
2609 |
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diff
changeset
|
2610 Label L_InnerLoop, L_FinalCheck, L_Found1, L_Found2, L_Found3, L_NotFound, L_End; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff
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|
2611 Register needle0 = needle, // Contains needle[0]. |
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diff
changeset
|
2612 addr = tmp1, |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
2613 ch1 = tmp2, |
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parents:
diff
changeset
|
2614 ch2 = R0; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2615 |
ec28f9c041ff
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parents:
diff
changeset
|
2616 //2 (variable) or 3 (const): |
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diff
changeset
|
2617 if (needle != R0) lhz(needle0, 0, needle); // Preload needle character, needle has len==1. |
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diff
changeset
|
2618 dcbtct(haystack, 0x00); // Indicate R/O access to haystack. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2619 |
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diff
changeset
|
2620 srwi_(tmp2, haycnt, 1); // Shift right by exact_log2(UNROLL_FACTOR). |
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parents:
diff
changeset
|
2621 mr(addr, haystack); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2622 beq(CCR0, L_FinalCheck); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2623 mtctr(tmp2); // Move to count register. |
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parents:
diff
changeset
|
2624 //8: |
ec28f9c041ff
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parents:
diff
changeset
|
2625 bind(L_InnerLoop); // Main work horse (2x unrolled search loop). |
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parents:
diff
changeset
|
2626 lhz(ch1, 0, addr); // Load characters from haystack. |
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parents:
diff
changeset
|
2627 lhz(ch2, 2, addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2628 (needle != R0) ? cmpw(CCR0, ch1, needle0) : cmplwi(CCR0, ch1, needleChar); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2629 (needle != R0) ? cmpw(CCR1, ch2, needle0) : cmplwi(CCR1, ch2, needleChar); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2630 beq(CCR0, L_Found1); // Did we find the needle? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2631 beq(CCR1, L_Found2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2632 addi(addr, addr, 4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2633 bdnz(L_InnerLoop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2634 //16: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2635 bind(L_FinalCheck); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2636 andi_(R0, haycnt, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2637 beq(CCR0, L_NotFound); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2638 lhz(ch1, 0, addr); // One position left at which we have to compare. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2639 (needle != R0) ? cmpw(CCR1, ch1, needle0) : cmplwi(CCR1, ch1, needleChar); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2640 beq(CCR1, L_Found3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2641 //21: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2642 bind(L_NotFound); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2643 li(result, -1); // Not found. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2644 b(L_End); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2645 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2646 bind(L_Found2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2647 addi(addr, addr, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2648 //24: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2649 bind(L_Found1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2650 bind(L_Found3); // Return index ... |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2651 subf(addr, haystack, addr); // relative to haystack, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2652 srdi(result, addr, 1); // in characters. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2653 bind(L_End); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2654 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2655 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2656 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2657 // Implementation of IndexOf for jchar arrays. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2658 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2659 // The length of haystack and needle are not constant, i.e. passed in a register. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2660 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2661 // Preserves registers haystack, needle. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2662 // Kills registers haycnt, needlecnt. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2663 // Assumes that result differs from all other registers. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2664 // Haystack, needle are the addresses of jchar-arrays. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2665 // Haycnt, needlecnt are the lengths of them, respectively. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2666 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2667 // Needlecntval must be zero or 15-bit unsigned immediate and > 1. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2668 void MacroAssembler::string_indexof(Register result, Register haystack, Register haycnt, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2669 Register needle, ciTypeArray* needle_values, Register needlecnt, int needlecntval, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2670 Register tmp1, Register tmp2, Register tmp3, Register tmp4) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2671 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2672 // Ensure 0<needlecnt<=haycnt in ideal graph as prerequisite! |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2673 Label L_TooShort, L_Found, L_NotFound, L_End; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2674 Register last_addr = haycnt, // Kill haycnt at the beginning. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2675 addr = tmp1, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2676 n_start = tmp2, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2677 ch1 = tmp3, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2678 ch2 = R0; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2679 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2680 // ************************************************************************************************** |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2681 // Prepare for main loop: optimized for needle count >=2, bail out otherwise. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2682 // ************************************************************************************************** |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2683 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2684 //1 (variable) or 3 (const): |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2685 dcbtct(needle, 0x00); // Indicate R/O access to str1. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2686 dcbtct(haystack, 0x00); // Indicate R/O access to str2. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2687 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2688 // Compute last haystack addr to use if no match gets found. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2689 if (needlecntval == 0) { // variable needlecnt |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2690 //3: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2691 subf(ch1, needlecnt, haycnt); // Last character index to compare is haycnt-needlecnt. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2692 addi(addr, haystack, -2); // Accesses use pre-increment. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2693 cmpwi(CCR6, needlecnt, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2694 blt(CCR6, L_TooShort); // Variable needlecnt: handle short needle separately. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2695 slwi(ch1, ch1, 1); // Scale to number of bytes. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2696 lwz(n_start, 0, needle); // Load first 2 characters of needle. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2697 add(last_addr, haystack, ch1); // Point to last address to compare (haystack+2*(haycnt-needlecnt)). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2698 addi(needlecnt, needlecnt, -2); // Rest of needle. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2699 } else { // constant needlecnt |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2700 guarantee(needlecntval != 1, "IndexOf with single-character needle must be handled separately"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2701 assert((needlecntval & 0x7fff) == needlecntval, "wrong immediate"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2702 //5: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2703 addi(ch1, haycnt, -needlecntval); // Last character index to compare is haycnt-needlecnt. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2704 lwz(n_start, 0, needle); // Load first 2 characters of needle. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2705 addi(addr, haystack, -2); // Accesses use pre-increment. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2706 slwi(ch1, ch1, 1); // Scale to number of bytes. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2707 add(last_addr, haystack, ch1); // Point to last address to compare (haystack+2*(haycnt-needlecnt)). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2708 li(needlecnt, needlecntval-2); // Rest of needle. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2709 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2710 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2711 // Main Loop (now we have at least 3 characters). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2712 //11: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2713 Label L_OuterLoop, L_InnerLoop, L_FinalCheck, L_Comp1, L_Comp2, L_Comp3; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2714 bind(L_OuterLoop); // Search for 1st 2 characters. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2715 Register addr_diff = tmp4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2716 subf(addr_diff, addr, last_addr); // Difference between already checked address and last address to check. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2717 addi(addr, addr, 2); // This is the new address we want to use for comparing. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2718 srdi_(ch2, addr_diff, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2719 beq(CCR0, L_FinalCheck); // 2 characters left? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2720 mtctr(ch2); // addr_diff/4 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2721 //16: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2722 bind(L_InnerLoop); // Main work horse (2x unrolled search loop) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2723 lwz(ch1, 0, addr); // Load 2 characters of haystack (ignore alignment). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2724 lwz(ch2, 2, addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2725 cmpw(CCR0, ch1, n_start); // Compare 2 characters (1 would be sufficient but try to reduce branches to CompLoop). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2726 cmpw(CCR1, ch2, n_start); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2727 beq(CCR0, L_Comp1); // Did we find the needle start? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2728 beq(CCR1, L_Comp2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2729 addi(addr, addr, 4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2730 bdnz(L_InnerLoop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2731 //24: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2732 bind(L_FinalCheck); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2733 rldicl_(addr_diff, addr_diff, 64-1, 63); // Remaining characters not covered by InnerLoop: (addr_diff>>1)&1. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2734 beq(CCR0, L_NotFound); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2735 lwz(ch1, 0, addr); // One position left at which we have to compare. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2736 cmpw(CCR1, ch1, n_start); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2737 beq(CCR1, L_Comp3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2738 //29: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2739 bind(L_NotFound); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2740 li(result, -1); // not found |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2741 b(L_End); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2742 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2743 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2744 // ************************************************************************************************** |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2745 // Special Case: unfortunately, the variable needle case can be called with needlecnt<2 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2746 // ************************************************************************************************** |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2747 //31: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2748 if ((needlecntval>>1) !=1 ) { // Const needlecnt is 2 or 3? Reduce code size. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2749 int nopcnt = 5; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2750 if (needlecntval !=0 ) ++nopcnt; // Balance alignment (other case: see below). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2751 if (needlecntval == 0) { // We have to handle these cases separately. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2752 Label L_OneCharLoop; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2753 bind(L_TooShort); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2754 mtctr(haycnt); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2755 lhz(n_start, 0, needle); // First character of needle |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2756 bind(L_OneCharLoop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2757 lhzu(ch1, 2, addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2758 cmpw(CCR1, ch1, n_start); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2759 beq(CCR1, L_Found); // Did we find the one character needle? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2760 bdnz(L_OneCharLoop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2761 li(result, -1); // Not found. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2762 b(L_End); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2763 } // 8 instructions, so no impact on alignment. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2764 for (int x = 0; x < nopcnt; ++x) nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2765 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2766 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2767 // ************************************************************************************************** |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2768 // Regular Case Part II: compare rest of needle (first 2 characters have been compared already) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2769 // ************************************************************************************************** |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2770 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2771 // Compare the rest |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2772 //36 if needlecntval==0, else 37: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2773 bind(L_Comp2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2774 addi(addr, addr, 2); // First comparison has failed, 2nd one hit. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2775 bind(L_Comp1); // Addr points to possible needle start. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2776 bind(L_Comp3); // Could have created a copy and use a different return address but saving code size here. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2777 if (needlecntval != 2) { // Const needlecnt==2? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2778 if (needlecntval != 3) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2779 if (needlecntval == 0) beq(CCR6, L_Found); // Variable needlecnt==2? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2780 Register ind_reg = tmp4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2781 li(ind_reg, 2*2); // First 2 characters are already compared, use index 2. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2782 mtctr(needlecnt); // Decremented by 2, still > 0. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2783 //40: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2784 Label L_CompLoop; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2785 bind(L_CompLoop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2786 lhzx(ch2, needle, ind_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2787 lhzx(ch1, addr, ind_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2788 cmpw(CCR1, ch1, ch2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2789 bne(CCR1, L_OuterLoop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2790 addi(ind_reg, ind_reg, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2791 bdnz(L_CompLoop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2792 } else { // No loop required if there's only one needle character left. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2793 lhz(ch2, 2*2, needle); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2794 lhz(ch1, 2*2, addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2795 cmpw(CCR1, ch1, ch2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2796 bne(CCR1, L_OuterLoop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2797 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2798 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2799 // Return index ... |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2800 //46: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2801 bind(L_Found); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2802 subf(addr, haystack, addr); // relative to haystack, ... |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2803 srdi(result, addr, 1); // in characters. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2804 //48: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2805 bind(L_End); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2806 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2807 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2808 // Implementation of Compare for jchar arrays. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2809 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2810 // Kills the registers str1, str2, cnt1, cnt2. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2811 // Kills cr0, ctr. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2812 // Assumes that result differes from the input registers. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2813 void MacroAssembler::string_compare(Register str1_reg, Register str2_reg, Register cnt1_reg, Register cnt2_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2814 Register result_reg, Register tmp_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2815 assert_different_registers(result_reg, str1_reg, str2_reg, cnt1_reg, cnt2_reg, tmp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2816 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2817 Label Ldone, Lslow_case, Lslow_loop, Lfast_loop; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2818 Register cnt_diff = R0, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2819 limit_reg = cnt1_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2820 chr1_reg = result_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2821 chr2_reg = cnt2_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2822 addr_diff = str2_reg; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2823 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2824 // Offset 0 should be 32 byte aligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2825 //-4: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2826 dcbtct(str1_reg, 0x00); // Indicate R/O access to str1. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2827 dcbtct(str2_reg, 0x00); // Indicate R/O access to str2. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2828 //-2: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2829 // Compute min(cnt1, cnt2) and check if 0 (bail out if we don't need to compare characters). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2830 subf(result_reg, cnt2_reg, cnt1_reg); // difference between cnt1/2 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2831 subf_(addr_diff, str1_reg, str2_reg); // alias? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2832 beq(CCR0, Ldone); // return cnt difference if both ones are identical |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2833 srawi(limit_reg, result_reg, 31); // generate signmask (cnt1/2 must be non-negative so cnt_diff can't overflow) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2834 mr(cnt_diff, result_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2835 andr(limit_reg, result_reg, limit_reg); // difference or zero (negative): cnt1<cnt2 ? cnt1-cnt2 : 0 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2836 add_(limit_reg, cnt2_reg, limit_reg); // min(cnt1, cnt2)==0? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2837 beq(CCR0, Ldone); // return cnt difference if one has 0 length |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2838 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2839 lhz(chr1_reg, 0, str1_reg); // optional: early out if first characters mismatch |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2840 lhzx(chr2_reg, str1_reg, addr_diff); // optional: early out if first characters mismatch |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2841 addi(tmp_reg, limit_reg, -1); // min(cnt1, cnt2)-1 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2842 subf_(result_reg, chr2_reg, chr1_reg); // optional: early out if first characters mismatch |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2843 bne(CCR0, Ldone); // optional: early out if first characters mismatch |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2844 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2845 // Set loop counter by scaling down tmp_reg |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2846 srawi_(chr2_reg, tmp_reg, exact_log2(4)); // (min(cnt1, cnt2)-1)/4 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2847 ble(CCR0, Lslow_case); // need >4 characters for fast loop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2848 andi(limit_reg, tmp_reg, 4-1); // remaining characters |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2849 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2850 // Adapt str1_reg str2_reg for the first loop iteration |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2851 mtctr(chr2_reg); // (min(cnt1, cnt2)-1)/4 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2852 addi(limit_reg, limit_reg, 4+1); // compare last 5-8 characters in slow_case if mismatch found in fast_loop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2853 //16: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2854 // Compare the rest of the characters |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2855 bind(Lfast_loop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2856 ld(chr1_reg, 0, str1_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2857 ldx(chr2_reg, str1_reg, addr_diff); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2858 cmpd(CCR0, chr2_reg, chr1_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2859 bne(CCR0, Lslow_case); // return chr1_reg |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2860 addi(str1_reg, str1_reg, 4*2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2861 bdnz(Lfast_loop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2862 addi(limit_reg, limit_reg, -4); // no mismatch found in fast_loop, only 1-4 characters missing |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2863 //23: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2864 bind(Lslow_case); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2865 mtctr(limit_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2866 //24: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2867 bind(Lslow_loop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2868 lhz(chr1_reg, 0, str1_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2869 lhzx(chr2_reg, str1_reg, addr_diff); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2870 subf_(result_reg, chr2_reg, chr1_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2871 bne(CCR0, Ldone); // return chr1_reg |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2872 addi(str1_reg, str1_reg, 1*2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2873 bdnz(Lslow_loop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2874 //30: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2875 // If strings are equal up to min length, return the length difference. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2876 mr(result_reg, cnt_diff); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2877 nop(); // alignment |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2878 //32: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2879 // Otherwise, return the difference between the first mismatched chars. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2880 bind(Ldone); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2881 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2882 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2883 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2884 // Compare char[] arrays. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2885 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2886 // str1_reg USE only |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2887 // str2_reg USE only |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2888 // cnt_reg USE_DEF, due to tmp reg shortage |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2889 // result_reg DEF only, might compromise USE only registers |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2890 void MacroAssembler::char_arrays_equals(Register str1_reg, Register str2_reg, Register cnt_reg, Register result_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2891 Register tmp1_reg, Register tmp2_reg, Register tmp3_reg, Register tmp4_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2892 Register tmp5_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2893 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2894 // Str1 may be the same register as str2 which can occur e.g. after scalar replacement. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2895 assert_different_registers(result_reg, str1_reg, cnt_reg, tmp1_reg, tmp2_reg, tmp3_reg, tmp4_reg, tmp5_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2896 assert_different_registers(result_reg, str2_reg, cnt_reg, tmp1_reg, tmp2_reg, tmp3_reg, tmp4_reg, tmp5_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2897 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2898 // Offset 0 should be 32 byte aligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2899 Label Linit_cbc, Lcbc, Lloop, Ldone_true, Ldone_false; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2900 Register index_reg = tmp5_reg; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2901 Register cbc_iter = tmp4_reg; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2902 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2903 //-1: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2904 dcbtct(str1_reg, 0x00); // Indicate R/O access to str1. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2905 dcbtct(str2_reg, 0x00); // Indicate R/O access to str2. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2906 //1: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2907 andi(cbc_iter, cnt_reg, 4-1); // Remaining iterations after 4 java characters per iteration loop. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2908 li(index_reg, 0); // init |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2909 li(result_reg, 0); // assume false |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2910 srwi_(tmp2_reg, cnt_reg, exact_log2(4)); // Div: 4 java characters per iteration (main loop). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2911 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2912 cmpwi(CCR1, cbc_iter, 0); // CCR1 = (cbc_iter==0) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2913 beq(CCR0, Linit_cbc); // too short |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2914 mtctr(tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2915 //8: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2916 bind(Lloop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2917 ldx(tmp1_reg, str1_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2918 ldx(tmp2_reg, str2_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2919 cmpd(CCR0, tmp1_reg, tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2920 bne(CCR0, Ldone_false); // Unequal char pair found -> done. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2921 addi(index_reg, index_reg, 4*sizeof(jchar)); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2922 bdnz(Lloop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2923 //14: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2924 bind(Linit_cbc); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2925 beq(CCR1, Ldone_true); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2926 mtctr(cbc_iter); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2927 //16: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2928 bind(Lcbc); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2929 lhzx(tmp1_reg, str1_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2930 lhzx(tmp2_reg, str2_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2931 cmpw(CCR0, tmp1_reg, tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2932 bne(CCR0, Ldone_false); // Unequal char pair found -> done. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2933 addi(index_reg, index_reg, 1*sizeof(jchar)); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2934 bdnz(Lcbc); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2935 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2936 bind(Ldone_true); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2937 li(result_reg, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2938 //24: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2939 bind(Ldone_false); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2940 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2941 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2942 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2943 void MacroAssembler::char_arrays_equalsImm(Register str1_reg, Register str2_reg, int cntval, Register result_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2944 Register tmp1_reg, Register tmp2_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2945 // Str1 may be the same register as str2 which can occur e.g. after scalar replacement. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2946 assert_different_registers(result_reg, str1_reg, tmp1_reg, tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2947 assert_different_registers(result_reg, str2_reg, tmp1_reg, tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2948 assert(sizeof(jchar) == 2, "must be"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2949 assert(cntval >= 0 && ((cntval & 0x7fff) == cntval), "wrong immediate"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2950 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2951 Label Ldone_false; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2952 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2953 if (cntval < 16) { // short case |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2954 if (cntval != 0) li(result_reg, 0); // assume false |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2955 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2956 const int num_bytes = cntval*sizeof(jchar); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2957 int index = 0; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2958 for (int next_index; (next_index = index + 8) <= num_bytes; index = next_index) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2959 ld(tmp1_reg, index, str1_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2960 ld(tmp2_reg, index, str2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2961 cmpd(CCR0, tmp1_reg, tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2962 bne(CCR0, Ldone_false); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2963 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2964 if (cntval & 2) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2965 lwz(tmp1_reg, index, str1_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2966 lwz(tmp2_reg, index, str2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2967 cmpw(CCR0, tmp1_reg, tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2968 bne(CCR0, Ldone_false); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2969 index += 4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2970 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2971 if (cntval & 1) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2972 lhz(tmp1_reg, index, str1_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2973 lhz(tmp2_reg, index, str2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2974 cmpw(CCR0, tmp1_reg, tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2975 bne(CCR0, Ldone_false); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2976 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2977 // fallthrough: true |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2978 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2979 Label Lloop; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2980 Register index_reg = tmp1_reg; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2981 const int loopcnt = cntval/4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2982 assert(loopcnt > 0, "must be"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2983 // Offset 0 should be 32 byte aligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2984 //2: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2985 dcbtct(str1_reg, 0x00); // Indicate R/O access to str1. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2986 dcbtct(str2_reg, 0x00); // Indicate R/O access to str2. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2987 li(tmp2_reg, loopcnt); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2988 li(index_reg, 0); // init |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2989 li(result_reg, 0); // assume false |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2990 mtctr(tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2991 //8: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2992 bind(Lloop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2993 ldx(R0, str1_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2994 ldx(tmp2_reg, str2_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2995 cmpd(CCR0, R0, tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2996 bne(CCR0, Ldone_false); // Unequal char pair found -> done. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2997 addi(index_reg, index_reg, 4*sizeof(jchar)); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2998 bdnz(Lloop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2999 //14: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3000 if (cntval & 2) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3001 lwzx(R0, str1_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3002 lwzx(tmp2_reg, str2_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3003 cmpw(CCR0, R0, tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3004 bne(CCR0, Ldone_false); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3005 if (cntval & 1) addi(index_reg, index_reg, 2*sizeof(jchar)); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3006 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3007 if (cntval & 1) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3008 lhzx(R0, str1_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3009 lhzx(tmp2_reg, str2_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3010 cmpw(CCR0, R0, tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3011 bne(CCR0, Ldone_false); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3012 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3013 // fallthru: true |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3014 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3015 li(result_reg, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3016 bind(Ldone_false); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3017 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3018 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3019 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3020 void MacroAssembler::asm_assert(bool check_equal, const char *msg, int id) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3021 #ifdef ASSERT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3022 Label ok; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3023 if (check_equal) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3024 beq(CCR0, ok); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3025 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3026 bne(CCR0, ok); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3027 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3028 stop(msg, id); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3029 bind(ok); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3030 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3031 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3032 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3033 void MacroAssembler::asm_assert_mems_zero(bool check_equal, int size, int mem_offset, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3034 Register mem_base, const char* msg, int id) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3035 #ifdef ASSERT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3036 switch (size) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3037 case 4: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3038 lwz(R0, mem_offset, mem_base); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3039 cmpwi(CCR0, R0, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3040 break; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3041 case 8: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3042 ld(R0, mem_offset, mem_base); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3043 cmpdi(CCR0, R0, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3044 break; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3045 default: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3046 ShouldNotReachHere(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3047 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3048 asm_assert(check_equal, msg, id); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3049 #endif // ASSERT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3050 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3051 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3052 void MacroAssembler::verify_thread() { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3053 if (VerifyThread) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3054 unimplemented("'VerifyThread' currently not implemented on PPC"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3055 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3056 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3057 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3058 // READ: oop. KILL: R0. Volatile floats perhaps. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3059 void MacroAssembler::verify_oop(Register oop, const char* msg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3060 if (!VerifyOops) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3061 return; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3062 } |
14445 | 3063 // Will be preserved. |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3064 Register tmp = R11; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3065 assert(oop != tmp, "precondition"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3066 unsigned int nbytes_save = 10*8; // 10 volatile gprs |
14445 | 3067 address/* FunctionDescriptor** */fd = StubRoutines::verify_oop_subroutine_entry_address(); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3068 // save tmp |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3069 mr(R0, tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3070 // kill tmp |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3071 save_LR_CR(tmp); |
17803 | 3072 push_frame_reg_args(nbytes_save, tmp); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3073 // restore tmp |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3074 mr(tmp, R0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3075 save_volatile_gprs(R1_SP, 112); // except R0 |
17803 | 3076 // load FunctionDescriptor** / entry_address * |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3077 load_const(tmp, fd); |
17803 | 3078 // load FunctionDescriptor* / entry_address |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3079 ld(tmp, 0, tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3080 mr(R4_ARG2, oop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3081 load_const(R3_ARG1, (address)msg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3082 // call destination for its side effect |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3083 call_c(tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3084 restore_volatile_gprs(R1_SP, 112); // except R0 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3085 pop_frame(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3086 // save tmp |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3087 mr(R0, tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3088 // kill tmp |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3089 restore_LR_CR(tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3090 // restore tmp |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3091 mr(tmp, R0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3092 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3093 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3094 const char* stop_types[] = { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3095 "stop", |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3096 "untested", |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3097 "unimplemented", |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3098 "shouldnotreachhere" |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3099 }; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3100 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3101 static void stop_on_request(int tp, const char* msg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3102 tty->print("PPC assembly code requires stop: (%s) %s\n", (void *)stop_types[tp%/*stop_end*/4], msg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3103 guarantee(false, err_msg("PPC assembly code requires stop: %s", msg)); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3104 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3105 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3106 // Call a C-function that prints output. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3107 void MacroAssembler::stop(int type, const char* msg, int id) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3108 #ifndef PRODUCT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3109 block_comment(err_msg("stop: %s %s {", stop_types[type%stop_end], msg)); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3110 #else |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3111 block_comment("stop {"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3112 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3113 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3114 // setup arguments |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3115 load_const_optimized(R3_ARG1, type); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3116 load_const_optimized(R4_ARG2, (void *)msg, /*tmp=*/R0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3117 call_VM_leaf(CAST_FROM_FN_PTR(address, stop_on_request), R3_ARG1, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3118 illtrap(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3119 emit_int32(id); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3120 block_comment("} stop;"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3121 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3122 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3123 #ifndef PRODUCT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3124 // Write pattern 0x0101010101010101 in memory region [low-before, high+after]. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3125 // Val, addr are temp registers. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3126 // If low == addr, addr is killed. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3127 // High is preserved. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3128 void MacroAssembler::zap_from_to(Register low, int before, Register high, int after, Register val, Register addr) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3129 if (!ZapMemory) return; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3130 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3131 assert_different_registers(low, val); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3132 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3133 BLOCK_COMMENT("zap memory region {"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3134 load_const_optimized(val, 0x0101010101010101); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3135 int size = before + after; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3136 if (low == high && size < 5 && size > 0) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3137 int offset = -before*BytesPerWord; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3138 for (int i = 0; i < size; ++i) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3139 std(val, offset, low); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3140 offset += (1*BytesPerWord); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3141 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3142 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3143 addi(addr, low, -before*BytesPerWord); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3144 assert_different_registers(high, val); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
3145 if (after) addi(high, high, after * BytesPerWord); |
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3146 Label loop; |
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3147 bind(loop); |
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3148 std(val, 0, addr); |
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3149 addi(addr, addr, 8); |
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3150 cmpd(CCR6, addr, high); |
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3151 ble(CCR6, loop); |
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3152 if (after) addi(high, high, -after * BytesPerWord); // Correct back to old value. |
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3153 } |
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3154 BLOCK_COMMENT("} zap memory region"); |
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3155 } |
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3156 |
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3157 #endif // !PRODUCT |
17804 | 3158 |
3159 SkipIfEqualZero::SkipIfEqualZero(MacroAssembler* masm, Register temp, const bool* flag_addr) : _masm(masm), _label() { | |
3160 int simm16_offset = masm->load_const_optimized(temp, (address)flag_addr, R0, true); | |
3161 assert(sizeof(bool) == 1, "PowerPC ABI"); | |
3162 masm->lbz(temp, simm16_offset, temp); | |
3163 masm->cmpwi(CCR0, temp, 0); | |
3164 masm->beq(CCR0, _label); | |
3165 } | |
3166 | |
3167 SkipIfEqualZero::~SkipIfEqualZero() { | |
3168 _masm->bind(_label); | |
3169 } |