Mercurial > hg > graal-compiler
annotate src/cpu/ppc/vm/macroAssembler_ppc.cpp @ 14408:ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
Summary: With this change the HotSpot core build works on Linux/PPC64. The VM succesfully executes simple test programs.
Reviewed-by: kvn
author | goetz |
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date | Fri, 02 Aug 2013 16:46:45 +0200 |
parents | |
children | 7687c56b6693 |
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. |
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3 * Copyright 2012, 2013 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/assembler.hpp" |
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28 #include "asm/assembler.inline.hpp" |
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29 #include "asm/macroAssembler.inline.hpp" |
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30 #include "compiler/disassembler.hpp" |
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31 #include "gc_interface/collectedHeap.inline.hpp" |
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32 #include "interpreter/interpreter.hpp" |
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33 #include "memory/cardTableModRefBS.hpp" |
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34 #include "memory/resourceArea.hpp" |
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35 #include "prims/methodHandles.hpp" |
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36 #include "runtime/biasedLocking.hpp" |
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37 #include "runtime/interfaceSupport.hpp" |
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38 #include "runtime/objectMonitor.hpp" |
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39 #include "runtime/os.hpp" |
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40 #include "runtime/sharedRuntime.hpp" |
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41 #include "runtime/stubRoutines.hpp" |
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42 #include "utilities/macros.hpp" |
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43 #if INCLUDE_ALL_GCS |
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44 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
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45 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" |
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46 #include "gc_implementation/g1/heapRegion.hpp" |
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47 #endif // INCLUDE_ALL_GCS |
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48 |
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49 #ifdef PRODUCT |
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50 #define BLOCK_COMMENT(str) // nothing |
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51 #else |
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52 #define BLOCK_COMMENT(str) block_comment(str) |
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53 #endif |
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54 |
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55 #ifdef ASSERT |
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56 // On RISC, there's no benefit to verifying instruction boundaries. |
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57 bool AbstractAssembler::pd_check_instruction_mark() { return false; } |
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58 #endif |
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59 |
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60 void MacroAssembler::ld_largeoffset_unchecked(Register d, int si31, Register a, int emit_filler_nop) { |
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61 assert(Assembler::is_simm(si31, 31) && si31 >= 0, "si31 out of range"); |
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62 if (Assembler::is_simm(si31, 16)) { |
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63 ld(d, si31, a); |
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64 if (emit_filler_nop) nop(); |
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65 } else { |
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66 const int hi = MacroAssembler::largeoffset_si16_si16_hi(si31); |
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67 const int lo = MacroAssembler::largeoffset_si16_si16_lo(si31); |
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68 addis(d, a, hi); |
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69 ld(d, lo, d); |
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70 } |
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71 } |
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72 |
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73 void MacroAssembler::ld_largeoffset(Register d, int si31, Register a, int emit_filler_nop) { |
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74 assert_different_registers(d, a); |
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75 ld_largeoffset_unchecked(d, si31, a, emit_filler_nop); |
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76 } |
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77 |
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78 void MacroAssembler::load_sized_value(Register dst, RegisterOrConstant offs, Register base, |
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79 size_t size_in_bytes, bool is_signed) { |
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80 switch (size_in_bytes) { |
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81 case 8: ld(dst, offs, base); break; |
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82 case 4: is_signed ? lwa(dst, offs, base) : lwz(dst, offs, base); break; |
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83 case 2: is_signed ? lha(dst, offs, base) : lhz(dst, offs, base); break; |
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84 case 1: lbz(dst, offs, base); if (is_signed) extsb(dst, dst); break; // lba doesn't exist :( |
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85 default: ShouldNotReachHere(); |
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86 } |
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87 } |
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88 |
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89 void MacroAssembler::store_sized_value(Register dst, RegisterOrConstant offs, Register base, |
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90 size_t size_in_bytes) { |
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91 switch (size_in_bytes) { |
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92 case 8: std(dst, offs, base); break; |
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93 case 4: stw(dst, offs, base); break; |
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94 case 2: sth(dst, offs, base); break; |
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95 case 1: stb(dst, offs, base); break; |
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96 default: ShouldNotReachHere(); |
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97 } |
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98 } |
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99 |
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100 void MacroAssembler::align(int modulus) { |
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101 while (offset() % modulus != 0) 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. |
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189 int MacroAssembler::patch_set_narrow_oop(address a, address bound, narrowOop data) { |
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190 assert(UseCompressedOops, "Should only patch compressed oops"); |
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191 |
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192 const address inst2_addr = a; |
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193 const int inst2 = *(int *)inst2_addr; |
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194 |
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195 // The relocation points to the second instruction, the addi, |
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196 // and the addi reads and writes the same register dst. |
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197 const int dst = inv_rt_field(inst2); |
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198 assert(is_addi(inst2) && inv_ra_field(inst2) == dst, "must be addi reading and writing dst"); |
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199 // Now, find the preceding addis which writes to dst. |
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200 int inst1 = 0; |
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201 address inst1_addr = inst2_addr - BytesPerInstWord; |
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202 bool inst1_found = false; |
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203 while (inst1_addr >= bound) { |
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204 inst1 = *(int *)inst1_addr; |
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205 if (is_lis(inst1) && inv_rs_field(inst1) == dst) { inst1_found = true; break; } |
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206 inst1_addr -= BytesPerInstWord; |
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207 } |
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208 assert(inst1_found, "inst is not lis"); |
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209 |
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210 int xc = (data >> 16) & 0xffff; |
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211 int xd = (data >> 0) & 0xffff; |
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212 |
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213 set_imm((int *)inst1_addr,((short)(xc + ((xd & 0x8000) != 0 ? 1 : 0)))); // see enc_load_con_narrow1/2 |
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214 set_imm((int *)inst2_addr, (short)(xd)); |
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215 return (int)((intptr_t)inst2_addr - (intptr_t)inst1_addr); |
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216 } |
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217 |
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218 // Get compressed oop or klass constant. |
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219 narrowOop MacroAssembler::get_narrow_oop(address a, address bound) { |
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220 assert(UseCompressedOops, "Should only patch compressed oops"); |
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221 |
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222 const address inst2_addr = a; |
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223 const int inst2 = *(int *)inst2_addr; |
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224 |
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225 // The relocation points to the second instruction, the addi, |
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226 // and the addi reads and writes the same register dst. |
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227 const int dst = inv_rt_field(inst2); |
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228 assert(is_addi(inst2) && inv_ra_field(inst2) == dst, "must be addi reading and writing dst"); |
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229 // Now, find the preceding lis which writes to dst. |
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230 int inst1 = 0; |
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231 address inst1_addr = inst2_addr - BytesPerInstWord; |
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232 bool inst1_found = false; |
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|
233 |
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234 while (inst1_addr >= bound) { |
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235 inst1 = *(int *) inst1_addr; |
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236 if (is_lis(inst1) && inv_rs_field(inst1) == dst) { inst1_found = true; break;} |
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237 inst1_addr -= BytesPerInstWord; |
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238 } |
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239 assert(inst1_found, "inst is not lis"); |
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|
240 |
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241 uint xl = ((unsigned int) (get_imm(inst2_addr,0) & 0xffff)); |
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242 uint xh = (((((xl & 0x8000) != 0 ? -1 : 0) + get_imm(inst1_addr,0)) & 0xffff) << 16); |
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243 return (int) (xl | xh); |
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244 } |
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245 #endif // _LP64 |
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246 |
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247 void MacroAssembler::load_const_from_method_toc(Register dst, AddressLiteral& a, Register toc) { |
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248 int toc_offset = 0; |
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249 // Use RelocationHolder::none for the constant pool entry, otherwise |
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250 // we will end up with a failing NativeCall::verify(x) where x is |
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251 // the address of the constant pool entry. |
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252 // FIXME: We should insert relocation information for oops at the constant |
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253 // pool entries instead of inserting it at the loads; patching of a constant |
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254 // pool entry should be less expensive. |
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255 Unimplemented(); |
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256 if (false) { |
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257 address oop_address = address_constant((address)a.value(), RelocationHolder::none); |
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258 // Relocate at the pc of the load. |
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259 relocate(a.rspec()); |
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260 toc_offset = (int)(oop_address - code()->consts()->start()); |
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261 } |
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262 ld_largeoffset_unchecked(dst, toc_offset, toc, true); |
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263 } |
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264 |
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265 bool MacroAssembler::is_load_const_from_method_toc_at(address a) { |
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266 const address inst1_addr = a; |
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267 const int inst1 = *(int *)inst1_addr; |
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268 |
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269 // The relocation points to the ld or the addis. |
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270 return (is_ld(inst1)) || |
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271 (is_addis(inst1) && inv_ra_field(inst1) != 0); |
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272 } |
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273 |
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274 int MacroAssembler::get_offset_of_load_const_from_method_toc_at(address a) { |
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275 assert(is_load_const_from_method_toc_at(a), "must be load_const_from_method_toc"); |
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276 |
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277 const address inst1_addr = a; |
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278 const int inst1 = *(int *)inst1_addr; |
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279 |
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280 if (is_ld(inst1)) { |
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281 return inv_d1_field(inst1); |
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282 } else if (is_addis(inst1)) { |
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283 const int dst = inv_rt_field(inst1); |
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284 |
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285 // Now, find the succeeding ld which reads and writes to dst. |
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286 address inst2_addr = inst1_addr + BytesPerInstWord; |
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287 int inst2 = 0; |
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288 while (true) { |
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289 inst2 = *(int *) inst2_addr; |
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290 if (is_ld(inst2) && inv_ra_field(inst2) == dst && inv_rt_field(inst2) == dst) { |
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291 // Stop, found the ld which reads and writes dst. |
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|
292 break; |
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|
293 } |
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294 inst2_addr += BytesPerInstWord; |
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|
295 } |
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296 return (inv_d1_field(inst1) << 16) + inv_d1_field(inst2); |
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297 } |
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298 ShouldNotReachHere(); |
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299 return 0; |
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|
300 } |
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|
301 |
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302 // Get the constant from a `load_const' sequence. |
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303 long MacroAssembler::get_const(address a) { |
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304 assert(is_load_const_at(a), "not a load of a constant"); |
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305 const int *p = (const int*) a; |
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306 unsigned long x = (((unsigned long) (get_imm(a,0) & 0xffff)) << 48); |
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307 if (is_ori(*(p+1))) { |
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308 x |= (((unsigned long) (get_imm(a,1) & 0xffff)) << 32); |
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309 x |= (((unsigned long) (get_imm(a,3) & 0xffff)) << 16); |
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310 x |= (((unsigned long) (get_imm(a,4) & 0xffff))); |
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311 } else if (is_lis(*(p+1))) { |
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312 x |= (((unsigned long) (get_imm(a,2) & 0xffff)) << 32); |
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313 x |= (((unsigned long) (get_imm(a,1) & 0xffff)) << 16); |
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314 x |= (((unsigned long) (get_imm(a,3) & 0xffff))); |
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|
315 } else { |
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|
316 ShouldNotReachHere(); |
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317 return (long) 0; |
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|
318 } |
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|
319 return (long) x; |
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|
320 } |
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|
321 |
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|
322 // Patch the 64 bit constant of a `load_const' sequence. This is a low |
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|
323 // level procedure. It neither flushes the instruction cache nor is it |
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|
324 // mt safe. |
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|
325 void MacroAssembler::patch_const(address a, long x) { |
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326 assert(is_load_const_at(a), "not a load of a constant"); |
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327 int *p = (int*) a; |
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|
328 if (is_ori(*(p+1))) { |
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|
329 set_imm(0 + p, (x >> 48) & 0xffff); |
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330 set_imm(1 + p, (x >> 32) & 0xffff); |
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|
331 set_imm(3 + p, (x >> 16) & 0xffff); |
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|
332 set_imm(4 + p, x & 0xffff); |
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|
333 } else if (is_lis(*(p+1))) { |
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|
334 set_imm(0 + p, (x >> 48) & 0xffff); |
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|
335 set_imm(2 + p, (x >> 32) & 0xffff); |
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|
336 set_imm(1 + p, (x >> 16) & 0xffff); |
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|
337 set_imm(3 + p, x & 0xffff); |
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|
338 } else { |
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|
339 ShouldNotReachHere(); |
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|
340 } |
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|
341 } |
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|
342 |
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|
343 AddressLiteral MacroAssembler::allocate_metadata_address(Metadata* obj) { |
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|
344 assert(oop_recorder() != NULL, "this assembler needs a Recorder"); |
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|
345 int index = oop_recorder()->allocate_metadata_index(obj); |
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|
346 RelocationHolder rspec = metadata_Relocation::spec(index); |
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|
347 return AddressLiteral((address)obj, rspec); |
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|
348 } |
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|
349 |
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|
350 AddressLiteral MacroAssembler::constant_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()->find_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::allocate_oop_address(jobject obj) { |
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|
358 assert(oop_recorder() != NULL, "this assembler needs an OopRecorder"); |
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|
359 int oop_index = oop_recorder()->allocate_oop_index(obj); |
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|
360 return AddressLiteral(address(obj), oop_Relocation::spec(oop_index)); |
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|
361 } |
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parents:
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|
362 |
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|
363 AddressLiteral MacroAssembler::constant_oop_address(jobject obj) { |
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|
364 assert(oop_recorder() != NULL, "this assembler needs an OopRecorder"); |
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|
365 int oop_index = oop_recorder()->find_index(obj); |
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|
366 return AddressLiteral(address(obj), oop_Relocation::spec(oop_index)); |
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|
367 } |
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|
368 |
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|
369 RegisterOrConstant MacroAssembler::delayed_value_impl(intptr_t* delayed_value_addr, |
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|
370 Register tmp, int offset) { |
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|
371 intptr_t value = *delayed_value_addr; |
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parents:
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|
372 if (value != 0) { |
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parents:
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|
373 return RegisterOrConstant(value + offset); |
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|
374 } |
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|
375 |
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parents:
diff
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|
376 // Load indirectly to solve generation ordering problem. |
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|
377 // static address, no relocation |
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|
378 int simm16_offset = load_const_optimized(tmp, delayed_value_addr, noreg, true); |
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diff
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|
379 ld(tmp, simm16_offset, tmp); // must be aligned ((xa & 3) == 0) |
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parents:
diff
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|
380 |
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parents:
diff
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|
381 if (offset != 0) { |
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parents:
diff
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|
382 addi(tmp, tmp, offset); |
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parents:
diff
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|
383 } |
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parents:
diff
changeset
|
384 |
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parents:
diff
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|
385 return RegisterOrConstant(tmp); |
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parents:
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|
386 } |
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parents:
diff
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|
387 |
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parents:
diff
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|
388 #ifndef PRODUCT |
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|
389 void MacroAssembler::pd_print_patched_instruction(address branch) { |
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parents:
diff
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|
390 Unimplemented(); // TODO: PPC port |
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parents:
diff
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|
391 } |
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parents:
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|
392 #endif // ndef PRODUCT |
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parents:
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|
393 |
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parents:
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changeset
|
394 // Conditional far branch for destinations encodable in 24+2 bits. |
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|
395 void MacroAssembler::bc_far(int boint, int biint, Label& dest, int optimize) { |
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parents:
diff
changeset
|
396 |
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parents:
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changeset
|
397 // If requested by flag optimize, relocate the bc_far as a |
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parents:
diff
changeset
|
398 // runtime_call and prepare for optimizing it when the code gets |
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goetz
parents:
diff
changeset
|
399 // relocated. |
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parents:
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|
400 if (optimize == bc_far_optimize_on_relocate) { |
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parents:
diff
changeset
|
401 relocate(relocInfo::runtime_call_type); |
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goetz
parents:
diff
changeset
|
402 } |
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parents:
diff
changeset
|
403 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
404 // variant 2: |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
405 // |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
406 // b!cxx SKIP |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
407 // bxx DEST |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
408 // SKIP: |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
409 // |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
410 |
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parents:
diff
changeset
|
411 const int opposite_boint = add_bhint_to_boint(opposite_bhint(inv_boint_bhint(boint)), |
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parents:
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changeset
|
412 opposite_bcond(inv_boint_bcond(boint))); |
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parents:
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changeset
|
413 |
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parents:
diff
changeset
|
414 // We emit two branches. |
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parents:
diff
changeset
|
415 // First, a conditional branch which jumps around the far branch. |
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parents:
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|
416 const address not_taken_pc = pc() + 2 * BytesPerInstWord; |
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parents:
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|
417 const address bc_pc = pc(); |
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parents:
diff
changeset
|
418 bc(opposite_boint, biint, not_taken_pc); |
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parents:
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changeset
|
419 |
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parents:
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|
420 const int bc_instr = *(int*)bc_pc; |
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parents:
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changeset
|
421 assert(not_taken_pc == (address)inv_bd_field(bc_instr, (intptr_t)bc_pc), "postcondition"); |
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parents:
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changeset
|
422 assert(opposite_boint == inv_bo_field(bc_instr), "postcondition"); |
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parents:
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|
423 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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|
424 opposite_bcond(inv_boint_bcond(inv_bo_field(bc_instr)))), |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
425 "postcondition"); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
426 assert(biint == inv_bi_field(bc_instr), "postcondition"); |
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parents:
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changeset
|
427 |
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parents:
diff
changeset
|
428 // Second, an unconditional far branch which jumps to dest. |
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parents:
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changeset
|
429 // Note: target(dest) remembers the current pc (see CodeSection::target) |
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parents:
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changeset
|
430 // and returns the current pc if the label is not bound yet; when |
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parents:
diff
changeset
|
431 // the label gets bound, the unconditional far branch will be patched. |
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parents:
diff
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|
432 const address target_pc = target(dest); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
433 const address b_pc = pc(); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
434 b(target_pc); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
435 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
436 assert(not_taken_pc == pc(), "postcondition"); |
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parents:
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changeset
|
437 assert(dest.is_bound() || target_pc == b_pc, "postcondition"); |
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parents:
diff
changeset
|
438 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
439 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
440 bool MacroAssembler::is_bc_far_at(address instruction_addr) { |
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parents:
diff
changeset
|
441 return is_bc_far_variant1_at(instruction_addr) || |
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parents:
diff
changeset
|
442 is_bc_far_variant2_at(instruction_addr) || |
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parents:
diff
changeset
|
443 is_bc_far_variant3_at(instruction_addr); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
444 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
445 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
446 address MacroAssembler::get_dest_of_bc_far_at(address instruction_addr) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
447 if (is_bc_far_variant1_at(instruction_addr)) { |
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parents:
diff
changeset
|
448 const address instruction_1_addr = instruction_addr; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
449 const int instruction_1 = *(int*)instruction_1_addr; |
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parents:
diff
changeset
|
450 return (address)inv_bd_field(instruction_1, (intptr_t)instruction_1_addr); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
451 } else if (is_bc_far_variant2_at(instruction_addr)) { |
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parents:
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changeset
|
452 const address instruction_2_addr = instruction_addr + 4; |
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parents:
diff
changeset
|
453 return bxx_destination(instruction_2_addr); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
454 } else if (is_bc_far_variant3_at(instruction_addr)) { |
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parents:
diff
changeset
|
455 return instruction_addr + 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
456 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
457 // variant 4 ??? |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
458 ShouldNotReachHere(); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
459 return NULL; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
460 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
461 void MacroAssembler::set_dest_of_bc_far_at(address instruction_addr, address dest) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
462 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
463 if (is_bc_far_variant3_at(instruction_addr)) { |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
464 // variant 3, far cond branch to the next instruction, already patched to nops: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
465 // |
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parents:
diff
changeset
|
466 // nop |
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parents:
diff
changeset
|
467 // endgroup |
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parents:
diff
changeset
|
468 // SKIP/DEST: |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
469 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
470 return; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
471 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
472 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
473 // first, extract boint and biint from the current branch |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
474 int boint = 0; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
475 int biint = 0; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
476 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
477 ResourceMark rm; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
478 const int code_size = 2 * BytesPerInstWord; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
479 CodeBuffer buf(instruction_addr, code_size); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
480 MacroAssembler masm(&buf); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
481 if (is_bc_far_variant2_at(instruction_addr) && dest == instruction_addr + 8) { |
ec28f9c041ff
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parents:
diff
changeset
|
482 // Far branch to next instruction: Optimize it by patching nops (produce variant 3). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
483 masm.nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
484 masm.endgroup(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
485 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
486 if (is_bc_far_variant1_at(instruction_addr)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
487 // variant 1, the 1st instruction contains the destination address: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
488 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
489 // bcxx DEST |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
490 // endgroup |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
491 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
492 const int instruction_1 = *(int*)(instruction_addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
493 boint = inv_bo_field(instruction_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
494 biint = inv_bi_field(instruction_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
495 } else if (is_bc_far_variant2_at(instruction_addr)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
496 // variant 2, the 2nd instruction contains the destination address: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
497 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
498 // b!cxx SKIP |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
499 // bxx DEST |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
500 // SKIP: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
501 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
502 const int instruction_1 = *(int*)(instruction_addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
503 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.
goetz
parents:
diff
changeset
|
504 opposite_bcond(inv_boint_bcond(inv_bo_field(instruction_1)))); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
505 biint = inv_bi_field(instruction_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
506 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
507 // variant 4??? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
508 ShouldNotReachHere(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
509 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
510 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
511 // second, set the new branch destination and optimize the code |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
512 if (dest != instruction_addr + 4 && // the bc_far is still unbound! |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
513 masm.is_within_range_of_bcxx(dest, instruction_addr)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
514 // variant 1: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
515 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
516 // bcxx DEST |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
517 // endgroup |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
518 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
519 masm.bc(boint, biint, dest); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
520 masm.endgroup(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
521 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
522 // variant 2: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
523 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
524 // b!cxx SKIP |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
525 // bxx DEST |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
526 // SKIP: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
527 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
528 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.
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parents:
diff
changeset
|
529 opposite_bcond(inv_boint_bcond(boint))); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
530 const address not_taken_pc = masm.pc() + 2 * BytesPerInstWord; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
531 masm.bc(opposite_boint, biint, not_taken_pc); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
532 masm.b(dest); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
533 } |
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.
goetz
parents:
diff
changeset
|
535 ICache::invalidate_range(instruction_addr, code_size); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
536 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
537 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
538 // Emit a NOT mt-safe patchable 64 bit absolute call/jump. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
539 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
|
540 // get current pc |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
541 uint64_t start_pc = (uint64_t) pc(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
542 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
543 const address pc_of_bl = (address) (start_pc + (6*BytesPerInstWord)); // bl is last |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
544 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
changeset
|
545 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
546 // relocate here |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
547 if (rt != relocInfo::none) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
548 relocate(rt); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
549 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
550 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
551 if ( ReoptimizeCallSequences && |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
552 (( link && is_within_range_of_b(dest, pc_of_bl)) || |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
553 (!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
|
554 // variant 2: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
555 // Emit an optimized, pc-relative call/jump. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
556 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
557 if (link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
558 // some padding |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
559 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
560 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
561 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
562 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
563 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
564 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
565 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
566 // do the call |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
567 assert(pc() == pc_of_bl, "just checking"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
568 bl(dest, relocInfo::none); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
569 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
570 // do the jump |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
571 assert(pc() == pc_of_b, "just checking"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
572 b(dest, relocInfo::none); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
573 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
574 // some padding |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
575 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
576 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
577 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
578 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
579 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
580 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
581 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
582 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
583 // Assert that we can identify the emitted call/jump. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
584 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
|
585 "can't identify emitted call"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
586 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
587 // variant 1: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
588 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
589 mr(R0, R11); // spill R11 -> R0. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
590 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
591 // Load the destination address into CTR, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
592 // calculate destination relative to global toc. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
593 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
|
594 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
595 mtctr(R11); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
596 mr(R11, R0); // spill R11 <- R0. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
597 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
598 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
599 // do the call/jump |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
600 if (link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
601 bctrl(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
602 } else{ |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
603 bctr(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
604 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
605 // Assert that we can identify the emitted call/jump. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
606 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
|
607 "can't identify emitted call"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
608 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
609 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
610 // Assert that we can identify the emitted call/jump. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
611 assert(is_bxx64_patchable_at((address)start_pc, link), |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
612 "can't identify emitted call"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
613 assert(get_dest_of_bxx64_patchable_at((address)start_pc, link) == dest, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
614 "wrong encoding of dest address"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
615 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
616 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
617 // Identify a bxx64_patchable instruction. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
618 bool MacroAssembler::is_bxx64_patchable_at(address instruction_addr, bool link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
619 return is_bxx64_patchable_variant1b_at(instruction_addr, link) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
620 //|| is_bxx64_patchable_variant1_at(instruction_addr, link) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
621 || is_bxx64_patchable_variant2_at(instruction_addr, link); |
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 // 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
|
625 // the call destination? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
626 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
|
627 // variant 2 is pc-relative |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
628 return is_bxx64_patchable_variant2_at(instruction_addr, link); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
629 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
630 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
631 // Identify variant 1. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
632 bool MacroAssembler::is_bxx64_patchable_variant1_at(address instruction_addr, bool link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
633 unsigned int* instr = (unsigned int*) instruction_addr; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
634 return (link ? is_bctrl(instr[6]) : is_bctr(instr[6])) // bctr[l] |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
635 && is_mtctr(instr[5]) // mtctr |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
636 && is_load_const_at(instruction_addr); |
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.
goetz
parents:
diff
changeset
|
638 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
639 // Identify variant 1b: load destination relative to global toc. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
640 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
|
641 unsigned int* instr = (unsigned int*) instruction_addr; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
642 return (link ? is_bctrl(instr[6]) : is_bctr(instr[6])) // bctr[l] |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
643 && is_mtctr(instr[3]) // mtctr |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
644 && is_calculate_address_from_global_toc_at(instruction_addr + 2*BytesPerInstWord, instruction_addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
645 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
646 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
647 // Identify variant 2. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
648 bool MacroAssembler::is_bxx64_patchable_variant2_at(address instruction_addr, bool link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
649 unsigned int* instr = (unsigned int*) instruction_addr; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
650 if (link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
651 return is_bl (instr[6]) // bl dest is last |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
652 && is_nop(instr[0]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
653 && is_nop(instr[1]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
654 && is_nop(instr[2]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
655 && is_nop(instr[3]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
656 && is_nop(instr[4]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
657 && is_nop(instr[5]); // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
658 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
659 return is_b (instr[0]) // b dest is first |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
660 && is_nop(instr[1]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
661 && is_nop(instr[2]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
662 && is_nop(instr[3]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
663 && is_nop(instr[4]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
664 && is_nop(instr[5]) // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
665 && is_nop(instr[6]); // nop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
666 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
667 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
668 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
669 // Set dest address of a bxx64_patchable instruction. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
670 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.
goetz
parents:
diff
changeset
|
671 ResourceMark rm; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
672 int code_size = MacroAssembler::bxx64_patchable_size; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
673 CodeBuffer buf(instruction_addr, code_size); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
674 MacroAssembler masm(&buf); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
675 masm.bxx64_patchable(dest, relocInfo::none, link); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
676 ICache::invalidate_range(instruction_addr, code_size); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
677 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
678 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
679 // Get dest address of a bxx64_patchable instruction. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
680 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
|
681 if (is_bxx64_patchable_variant1_at(instruction_addr, link)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
682 return (address) (unsigned long) get_const(instruction_addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
683 } 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
|
684 unsigned int* instr = (unsigned int*) instruction_addr; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
685 if (link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
686 const int instr_idx = 6; // bl is last |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
687 int branchoffset = branch_destination(instr[instr_idx], 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
688 return instruction_addr + branchoffset + instr_idx*BytesPerInstWord; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
689 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
690 const int instr_idx = 0; // b is first |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
691 int branchoffset = branch_destination(instr[instr_idx], 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
692 return instruction_addr + branchoffset + instr_idx*BytesPerInstWord; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
693 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
694 // Load dest relative to global toc. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
695 } 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
|
696 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
|
697 instruction_addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
698 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
699 ShouldNotReachHere(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
700 return NULL; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
701 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
702 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
703 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
704 // Uses ordering which corresponds to ABI: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
705 // _savegpr0_14: std r14,-144(r1) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
706 // _savegpr0_15: std r15,-136(r1) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
707 // _savegpr0_16: std r16,-128(r1) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
708 void MacroAssembler::save_nonvolatile_gprs(Register dst, int offset) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
709 std(R14, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
710 std(R15, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
711 std(R16, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
712 std(R17, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
713 std(R18, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
714 std(R19, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
715 std(R20, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
716 std(R21, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
717 std(R22, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
718 std(R23, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
719 std(R24, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
720 std(R25, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
721 std(R26, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
722 std(R27, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
723 std(R28, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
724 std(R29, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
725 std(R30, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
726 std(R31, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
727 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
728 stfd(F14, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
729 stfd(F15, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
730 stfd(F16, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
731 stfd(F17, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
732 stfd(F18, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
733 stfd(F19, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
734 stfd(F20, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
735 stfd(F21, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
736 stfd(F22, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
737 stfd(F23, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
738 stfd(F24, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
739 stfd(F25, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
740 stfd(F26, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
741 stfd(F27, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
742 stfd(F28, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
743 stfd(F29, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
744 stfd(F30, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
745 stfd(F31, offset, dst); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
746 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
747 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
748 // Uses ordering which corresponds to ABI: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
749 // _restgpr0_14: ld r14,-144(r1) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
750 // _restgpr0_15: ld r15,-136(r1) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
751 // _restgpr0_16: ld r16,-128(r1) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
752 void MacroAssembler::restore_nonvolatile_gprs(Register src, int offset) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
753 ld(R14, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
754 ld(R15, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
755 ld(R16, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
756 ld(R17, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
757 ld(R18, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
758 ld(R19, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
759 ld(R20, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
760 ld(R21, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
761 ld(R22, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
762 ld(R23, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
763 ld(R24, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
764 ld(R25, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
765 ld(R26, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
766 ld(R27, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
767 ld(R28, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
768 ld(R29, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
769 ld(R30, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
770 ld(R31, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
771 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
772 // FP registers |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
773 lfd(F14, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
774 lfd(F15, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
775 lfd(F16, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
776 lfd(F17, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
777 lfd(F18, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
778 lfd(F19, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
779 lfd(F20, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
780 lfd(F21, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
781 lfd(F22, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
782 lfd(F23, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
783 lfd(F24, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
784 lfd(F25, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
785 lfd(F26, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
786 lfd(F27, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
787 lfd(F28, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
788 lfd(F29, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
789 lfd(F30, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
790 lfd(F31, offset, src); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
791 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
792 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
793 // For verify_oops. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
794 void MacroAssembler::save_volatile_gprs(Register dst, int offset) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
795 std(R3, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
796 std(R4, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
797 std(R5, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
798 std(R6, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
799 std(R7, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
800 std(R8, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
801 std(R9, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
802 std(R10, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
803 std(R11, offset, dst); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
804 std(R12, offset, dst); |
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::restore_volatile_gprs(Register src, int offset) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
809 ld(R3, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
810 ld(R4, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
811 ld(R5, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
812 ld(R6, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
813 ld(R7, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
814 ld(R8, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
815 ld(R9, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
816 ld(R10, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
817 ld(R11, offset, src); offset += 8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
818 ld(R12, offset, src); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
819 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
820 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
821 void MacroAssembler::save_LR_CR(Register tmp) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
822 mfcr(tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
823 std(tmp, _abi(cr), R1_SP); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
824 mflr(tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
825 std(tmp, _abi(lr), R1_SP); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
826 // Tmp must contain lr on exit! (see return_addr and prolog in ppc64.ad) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
827 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
828 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
829 void MacroAssembler::restore_LR_CR(Register tmp) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
830 assert(tmp != R1_SP, "must be distinct"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
831 ld(tmp, _abi(lr), R1_SP); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
832 mtlr(tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
833 ld(tmp, _abi(cr), R1_SP); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
834 mtcr(tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
835 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
836 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
837 address MacroAssembler::get_PC_trash_LR(Register result) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
838 Label L; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
839 bl(L); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
840 bind(L); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
841 address lr_pc = pc(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
842 mflr(result); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
843 return lr_pc; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
844 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
845 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
846 void MacroAssembler::resize_frame(Register offset, Register tmp) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
847 #ifdef ASSERT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
848 assert_different_registers(offset, tmp, R1_SP); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
849 andi_(tmp, offset, frame::alignment_in_bytes-1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
850 asm_assert_eq("resize_frame: unaligned", 0x204); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
851 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
852 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
853 // tmp <- *(SP) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
854 ld(tmp, _abi(callers_sp), R1_SP); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
855 // addr <- SP + offset; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
856 // *(addr) <- tmp; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
857 // SP <- addr |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
858 stdux(tmp, R1_SP, offset); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
859 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
860 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
861 void MacroAssembler::resize_frame(int offset, Register tmp) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
862 assert(is_simm(offset, 16), "too big an offset"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
863 assert_different_registers(tmp, R1_SP); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
864 assert((offset & (frame::alignment_in_bytes-1))==0, "resize_frame: unaligned"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
865 // tmp <- *(SP) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
866 ld(tmp, _abi(callers_sp), R1_SP); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
867 // addr <- SP + offset; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
868 // *(addr) <- tmp; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
869 // SP <- addr |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
870 stdu(tmp, offset, R1_SP); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
871 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
872 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
873 void MacroAssembler::resize_frame_absolute(Register addr, Register tmp1, Register tmp2) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
874 // (addr == tmp1) || (addr == tmp2) is allowed here! |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
875 assert(tmp1 != tmp2, "must be distinct"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
876 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
877 // compute offset w.r.t. current stack pointer |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
878 // tmp_1 <- addr - SP (!) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
879 subf(tmp1, R1_SP, addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
880 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
881 // atomically update SP keeping back link. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
882 resize_frame(tmp1/* offset */, tmp2/* tmp */); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
883 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
884 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
885 void MacroAssembler::push_frame(Register bytes, Register tmp) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
886 #ifdef ASSERT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
887 assert(bytes != R0, "r0 not allowed here"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
888 andi_(R0, bytes, frame::alignment_in_bytes-1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
889 asm_assert_eq("push_frame(Reg, Reg): unaligned", 0x203); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
890 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
891 neg(tmp, bytes); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
892 stdux(R1_SP, R1_SP, tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
893 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
894 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
895 // Push a frame of size `bytes'. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
896 void MacroAssembler::push_frame(unsigned int bytes, Register tmp) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
897 long offset = align_addr(bytes, frame::alignment_in_bytes); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
898 if (is_simm(-offset, 16)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
899 stdu(R1_SP, -offset, R1_SP); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
900 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
901 load_const(tmp, -offset); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
902 stdux(R1_SP, R1_SP, tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
903 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
904 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
905 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
906 // Push a frame of size `bytes' plus abi112 on top. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
907 void MacroAssembler::push_frame_abi112(unsigned int bytes, Register tmp) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
908 push_frame(bytes + frame::abi_112_size, tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
909 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
910 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
911 // Setup up a new C frame with a spill area for non-volatile GPRs and |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
912 // additional space for local variables. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
913 void MacroAssembler::push_frame_abi112_nonvolatiles(unsigned int bytes, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
914 Register tmp) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
915 push_frame(bytes + frame::abi_112_size + frame::spill_nonvolatiles_size, tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
916 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
917 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
918 // Pop current C frame. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
919 void MacroAssembler::pop_frame() { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
920 ld(R1_SP, _abi(callers_sp), R1_SP); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
921 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
922 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
923 // Generic version of a call to C function via a function descriptor |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
924 // with variable support for C calling conventions (TOC, ENV, etc.). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
925 // Updates and returns _last_calls_return_pc. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
926 address MacroAssembler::branch_to(Register function_descriptor, bool and_link, bool save_toc_before_call, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
927 bool restore_toc_after_call, bool load_toc_of_callee, bool load_env_of_callee) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
928 // we emit standard ptrgl glue code here |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
929 assert((function_descriptor != R0), "function_descriptor cannot be R0"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
930 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
931 // retrieve necessary entries from the function descriptor |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
932 ld(R0, in_bytes(FunctionDescriptor::entry_offset()), function_descriptor); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
933 mtctr(R0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
934 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
935 if (load_toc_of_callee) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
936 ld(R2_TOC, in_bytes(FunctionDescriptor::toc_offset()), function_descriptor); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
937 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
938 if (load_env_of_callee) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
939 ld(R11, in_bytes(FunctionDescriptor::env_offset()), function_descriptor); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
940 } else if (load_toc_of_callee) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
941 li(R11, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
942 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
943 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
944 // do a call or a branch |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
945 if (and_link) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
946 bctrl(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
947 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
948 bctr(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
949 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
950 _last_calls_return_pc = pc(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
951 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
952 return _last_calls_return_pc; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
953 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
954 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
955 // Call a C function via a function descriptor and use full C calling |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
956 // conventions. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
957 // We don't use the TOC in generated code, so there is no need to save |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
958 // and restore its value. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
959 address MacroAssembler::call_c(Register fd) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
960 return branch_to(fd, /*and_link=*/true, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
961 /*save toc=*/false, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
962 /*restore toc=*/false, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
963 /*load toc=*/true, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
964 /*load env=*/true); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
965 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
966 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
967 address MacroAssembler::call_c(const FunctionDescriptor* fd, relocInfo::relocType rt) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
968 if (rt != relocInfo::none) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
969 // this call needs to be relocatable |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
970 if (!ReoptimizeCallSequences |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
971 || (rt != relocInfo::runtime_call_type && rt != relocInfo::none) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
972 || fd == NULL // support code-size estimation |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
973 || !fd->is_friend_function() |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
974 || fd->entry() == NULL) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
975 // it's not a friend function as defined by class FunctionDescriptor, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
976 // so do a full call-c here. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
977 load_const(R11, (address)fd, R0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
978 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
979 bool has_env = (fd != NULL && fd->env() != NULL); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
980 return branch_to(R11, /*and_link=*/true, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
981 /*save toc=*/false, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
982 /*restore toc=*/false, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
983 /*load toc=*/true, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
984 /*load env=*/has_env); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
985 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
986 // It's a friend function. Load the entry point and don't care about |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
987 // toc and env. Use an optimizable call instruction, but ensure the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
988 // same code-size as in the case of a non-friend function. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
989 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
990 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
991 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
992 bl64_patchable(fd->entry(), rt); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
993 _last_calls_return_pc = pc(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
994 return _last_calls_return_pc; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
995 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
996 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
997 // This call does not need to be relocatable, do more aggressive |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
998 // optimizations. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
999 if (!ReoptimizeCallSequences |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1000 || !fd->is_friend_function()) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1001 // It's not a friend function as defined by class FunctionDescriptor, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1002 // so do a full call-c here. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1003 load_const(R11, (address)fd, R0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1004 return branch_to(R11, /*and_link=*/true, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1005 /*save toc=*/false, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1006 /*restore toc=*/false, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1007 /*load toc=*/true, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1008 /*load env=*/true); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1009 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1010 // it's a friend function, load the entry point and don't care about |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1011 // toc and env. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1012 address dest = fd->entry(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1013 if (is_within_range_of_b(dest, pc())) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1014 bl(dest); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1015 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1016 bl64_patchable(dest, rt); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1017 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1018 _last_calls_return_pc = pc(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1019 return _last_calls_return_pc; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1020 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1021 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1022 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1023 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1024 // Call a C function. All constants needed reside in TOC. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1025 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1026 // Read the address to call from the TOC. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1027 // Read env from TOC, if fd specifies an env. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1028 // Read new TOC from TOC. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1029 address MacroAssembler::call_c_using_toc(const FunctionDescriptor* fd, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1030 relocInfo::relocType rt, Register toc) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1031 if (!ReoptimizeCallSequences |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1032 || (rt != relocInfo::runtime_call_type && rt != relocInfo::none) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1033 || !fd->is_friend_function()) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1034 // It's not a friend function as defined by class FunctionDescriptor, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1035 // so do a full call-c here. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1036 assert(fd->entry() != NULL, "function must be linked"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1037 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1038 AddressLiteral fd_entry(fd->entry()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1039 load_const_from_method_toc(R11, fd_entry, toc); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1040 mtctr(R11); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1041 if (fd->env() == NULL) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1042 li(R11, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1043 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1044 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1045 AddressLiteral fd_env(fd->env()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1046 load_const_from_method_toc(R11, fd_env, toc); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1047 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1048 AddressLiteral fd_toc(fd->toc()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1049 load_toc_from_toc(R2_TOC, fd_toc, toc); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1050 // R2_TOC is killed. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1051 bctrl(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1052 _last_calls_return_pc = pc(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1053 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1054 // It's a friend function, load the entry point and don't care about |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1055 // toc and env. Use an optimizable call instruction, but ensure the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1056 // same code-size as in the case of a non-friend function. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1057 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1058 bl64_patchable(fd->entry(), rt); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1059 _last_calls_return_pc = pc(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1060 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1061 return _last_calls_return_pc; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1062 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1063 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1064 void MacroAssembler::call_VM_base(Register oop_result, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1065 Register last_java_sp, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1066 address entry_point, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1067 bool check_exceptions) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1068 BLOCK_COMMENT("call_VM {"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1069 // Determine last_java_sp register. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1070 if (!last_java_sp->is_valid()) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1071 last_java_sp = R1_SP; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1072 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1073 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
|
1074 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1075 // ARG1 must hold thread address. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1076 mr(R3_ARG1, R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1077 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1078 address return_pc = call_c((FunctionDescriptor*)entry_point, relocInfo::none); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1079 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1080 reset_last_Java_frame(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1081 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1082 // Check for pending exceptions. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1083 if (check_exceptions) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1084 // We don't check for exceptions here. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1085 ShouldNotReachHere(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1086 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1087 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1088 // 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
|
1089 if (oop_result->is_valid()) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1090 get_vm_result(oop_result); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1091 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1092 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1093 _last_calls_return_pc = return_pc; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1094 BLOCK_COMMENT("} call_VM"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1095 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1096 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1097 void MacroAssembler::call_VM_leaf_base(address entry_point) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1098 BLOCK_COMMENT("call_VM_leaf {"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1099 call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, entry_point), relocInfo::none); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1100 BLOCK_COMMENT("} call_VM_leaf"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1101 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1102 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1103 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
|
1104 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
|
1105 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1106 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1107 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
|
1108 bool check_exceptions) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1109 // R3_ARG1 is reserved for the thread. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1110 mr_if_needed(R4_ARG2, arg_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1111 call_VM(oop_result, entry_point, check_exceptions); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1112 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1113 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1114 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
|
1115 bool check_exceptions) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1116 // R3_ARG1 is reserved for the thread |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1117 mr_if_needed(R4_ARG2, arg_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1118 assert(arg_2 != R4_ARG2, "smashed argument"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1119 mr_if_needed(R5_ARG3, arg_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1120 call_VM(oop_result, entry_point, check_exceptions); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1121 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1122 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1123 void MacroAssembler::call_VM_leaf(address entry_point) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1124 call_VM_leaf_base(entry_point); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1125 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1126 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1127 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
|
1128 mr_if_needed(R3_ARG1, arg_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1129 call_VM_leaf(entry_point); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1130 } |
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 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
|
1133 mr_if_needed(R3_ARG1, arg_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1134 assert(arg_2 != R3_ARG1, "smashed argument"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1135 mr_if_needed(R4_ARG2, arg_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1136 call_VM_leaf(entry_point); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1137 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1138 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1139 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
|
1140 mr_if_needed(R3_ARG1, arg_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1141 assert(arg_2 != R3_ARG1, "smashed argument"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1142 mr_if_needed(R4_ARG2, arg_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1143 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
|
1144 mr_if_needed(R5_ARG3, arg_3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1145 call_VM_leaf(entry_point); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1146 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1147 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1148 // 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
|
1149 // which was emitted by load_from_polling_page(..). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1150 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
|
1151 address* polling_address_ptr) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1152 if (!is_ld(instruction)) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1153 return false; // It's not a ld. Fail. |
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 int rt = inv_rt_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1156 int ra = inv_ra_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1157 int ds = inv_ds_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1158 if (!(ds == 0 && ra != 0 && rt == 0)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1159 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
|
1160 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1161 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1162 if (!ucontext) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1163 // Set polling address. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1164 if (polling_address_ptr != NULL) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1165 *polling_address_ptr = NULL; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1166 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1167 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
|
1168 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1169 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1170 #ifdef LINUX |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1171 // 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
|
1172 // the safepoing polling page. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1173 ucontext_t* uc = (ucontext_t*) ucontext; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1174 // Set polling address. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1175 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
|
1176 if (polling_address_ptr != NULL) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1177 *polling_address_ptr = addr; |
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 return os::is_poll_address(addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1180 #else |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1181 // Not on Linux, ucontext must be NULL. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1182 ShouldNotReachHere(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1183 return false; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1184 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1185 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1186 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1187 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
|
1188 #ifdef LINUX |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1189 ucontext_t* uc = (ucontext_t*) ucontext; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1190 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1191 if (is_stwx(instruction) || is_stwux(instruction)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1192 int ra = inv_ra_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1193 int rb = inv_rb_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1194 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1195 // look up content of ra and rb in ucontext |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1196 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
|
1197 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
|
1198 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
|
1199 } else if (is_stw(instruction) || is_stwu(instruction)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1200 int ra = inv_ra_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1201 int d1 = inv_d1_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1202 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1203 // look up content of ra in ucontext |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1204 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
|
1205 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
|
1206 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1207 return false; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1208 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1209 #else |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1210 // workaround not needed on !LINUX :-) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1211 ShouldNotCallThis(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1212 return false; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1213 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1214 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1215 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1216 void MacroAssembler::bang_stack_with_offset(int offset) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1217 // 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
|
1218 // 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
|
1219 // Therefore, stack banging is not necessary when increasing |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1220 // the stack by <= os::vm_page_size() bytes. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1221 // 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
|
1222 // called repeatedly to bang the intermediate pages. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1223 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1224 // Stack grows down, caller passes positive offset. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1225 assert(offset > 0, "must bang with positive offset"); |
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 long stdoffset = -offset; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1228 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1229 if (is_simm(stdoffset, 16)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1230 // Signed 16 bit offset, a simple std is ok. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1231 if (UseLoadInstructionsForStackBangingPPC64) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1232 ld(R0, (int)(signed short)stdoffset, R1_SP); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1233 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1234 std(R0,(int)(signed short)stdoffset, R1_SP); |
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 } else if (is_simm(stdoffset, 31)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1237 const int hi = MacroAssembler::largeoffset_si16_si16_hi(stdoffset); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1238 const int lo = MacroAssembler::largeoffset_si16_si16_lo(stdoffset); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1239 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1240 Register tmp = R11; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1241 addis(tmp, R1_SP, hi); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1242 if (UseLoadInstructionsForStackBangingPPC64) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1243 ld(R0, lo, tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1244 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1245 std(R0, lo, tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1246 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1247 } else { |
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 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1250 } |
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 // If instruction is a stack bang of the form |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1253 // std R0, x(Ry), (see bang_stack_with_offset()) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1254 // 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
|
1255 // 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
|
1256 // return the banged address. Otherwise, return 0. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1257 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
|
1258 #ifdef LINUX |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1259 ucontext_t* uc = (ucontext_t*) ucontext; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1260 int rs = inv_rs_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1261 int ra = inv_ra_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1262 if ( (is_ld(instruction) && rs == 0 && UseLoadInstructionsForStackBangingPPC64) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1263 || (is_std(instruction) && rs == 0 && !UseLoadInstructionsForStackBangingPPC64) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1264 || (is_stdu(instruction) && rs == 1)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1265 int ds = inv_ds_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1266 // return banged address |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1267 return ds+(address)uc->uc_mcontext.regs->gpr[ra]; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1268 } else if (is_stdux(instruction) && rs == 1) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1269 int rb = inv_rb_field(instruction); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1270 address sp = (address)uc->uc_mcontext.regs->gpr[1]; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1271 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
|
1272 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
|
1273 : sp + rb_val; // banged address |
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 return NULL; // not a stack bang |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1276 #else |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1277 // workaround not needed on !LINUX :-) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1278 ShouldNotCallThis(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1279 return NULL; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1280 #endif |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1283 // CmpxchgX sets condition register to cmpX(current, compare). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1284 void MacroAssembler::cmpxchgw(ConditionRegister flag, Register dest_current_value, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1285 Register compare_value, Register exchange_value, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1286 Register addr_base, int semantics, bool cmpxchgx_hint, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1287 Register int_flag_success, bool contention_hint) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1288 Label retry; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1289 Label failed; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1290 Label done; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1291 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1292 // 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
|
1293 // result register is different from the other ones. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1294 bool use_result_reg = (int_flag_success != noreg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1295 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
|
1296 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
|
1297 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1298 // release/fence semantics |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1299 if (semantics & MemBarRel) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1300 release(); |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1303 if (use_result_reg && preset_result_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1304 li(int_flag_success, 0); // preset (assume cas failed) |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1307 // 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
|
1308 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
|
1309 lwz(dest_current_value, 0, addr_base); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1310 cmpw(flag, dest_current_value, compare_value); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1311 bne(flag, failed); |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1314 // atomic emulation loop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1315 bind(retry); |
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 lwarx(dest_current_value, addr_base, cmpxchgx_hint); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1318 cmpw(flag, dest_current_value, compare_value); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1319 if (UseStaticBranchPredictionInCompareAndSwapPPC64) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1320 bne_predict_not_taken(flag, failed); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1321 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1322 bne( flag, failed); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1323 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1324 // 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
|
1325 // fall through => (flag == eq), (dest_current_value == compare_value) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1326 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1327 stwcx_(exchange_value, addr_base); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1328 if (UseStaticBranchPredictionInCompareAndSwapPPC64) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1329 bne_predict_not_taken(CCR0, retry); // StXcx_ sets CCR0. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1330 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1331 bne( CCR0, retry); // StXcx_ sets CCR0. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1332 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1333 // 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
|
1334 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1335 // 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
|
1336 // same register as one above). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1337 if (use_result_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1338 li(int_flag_success, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1339 } |
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 if (semantics & MemBarFenceAfter) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1342 fence(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1343 } else if (semantics & MemBarAcq) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1344 isync(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1345 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1346 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1347 if (use_result_reg && !preset_result_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1348 b(done); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1349 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1350 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1351 bind(failed); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1352 if (use_result_reg && !preset_result_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1353 li(int_flag_success, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1354 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1355 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1356 bind(done); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1357 // (flag == ne) => (dest_current_value != compare_value), (!swapped) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1358 // (flag == eq) => (dest_current_value == compare_value), ( swapped) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1359 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1360 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1361 // Preforms atomic compare exchange: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1362 // if (compare_value == *addr_base) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1363 // *addr_base = exchange_value |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1364 // int_flag_success = 1; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1365 // else |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1366 // int_flag_success = 0; |
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 // ConditionRegister flag = cmp(compare_value, *addr_base) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1369 // Register dest_current_value = *addr_base |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1370 // 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
|
1371 // 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
|
1372 // Register addr_base The memory location to compareXChange |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1373 // 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
|
1374 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1375 // 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
|
1376 // 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
|
1377 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1378 void MacroAssembler::cmpxchgd(ConditionRegister flag, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1379 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
|
1380 Register addr_base, int semantics, bool cmpxchgx_hint, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1381 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
|
1382 Label retry; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1383 Label failed_int; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1384 Label& failed = (failed_ext != NULL) ? *failed_ext : failed_int; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1385 Label done; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1386 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1387 // 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
|
1388 bool use_result_reg = (int_flag_success!=noreg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1389 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
|
1390 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
|
1391 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
|
1392 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1393 // release/fence semantics |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1394 if (semantics & MemBarRel) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1395 release(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1396 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1397 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1398 if (use_result_reg && preset_result_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1399 li(int_flag_success, 0); // preset (assume cas failed) |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1402 // 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
|
1403 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
|
1404 ld(dest_current_value, 0, addr_base); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1405 cmpd(flag, dest_current_value, compare_value); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1406 bne(flag, failed); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1407 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1408 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1409 // atomic emulation loop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1410 bind(retry); |
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 ldarx(dest_current_value, addr_base, cmpxchgx_hint); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1413 cmpd(flag, dest_current_value, compare_value); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1414 if (UseStaticBranchPredictionInCompareAndSwapPPC64) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1415 bne_predict_not_taken(flag, failed); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1416 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1417 bne( flag, failed); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1418 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1419 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1420 stdcx_(exchange_value, addr_base); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1421 if (UseStaticBranchPredictionInCompareAndSwapPPC64) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1422 bne_predict_not_taken(CCR0, retry); // stXcx_ sets CCR0 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1423 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1424 bne( CCR0, retry); // stXcx_ sets CCR0 |
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 // 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
|
1428 if (use_result_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1429 li(int_flag_success, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1430 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1431 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1432 // POWER6 doesn't need isync in CAS. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1433 // Always emit isync to be on the safe side. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1434 if (semantics & MemBarFenceAfter) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1435 fence(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1436 } else if (semantics & MemBarAcq) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1437 isync(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1438 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1439 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1440 if (use_result_reg && !preset_result_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1441 b(done); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1442 } |
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 bind(failed_int); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1445 if (use_result_reg && !preset_result_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1446 li(int_flag_success, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1447 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1448 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1449 bind(done); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1450 // (flag == ne) => (dest_current_value != compare_value), (!swapped) |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1451 // (flag == eq) => (dest_current_value == compare_value), ( swapped) |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1454 // Look up the method for a megamorphic invokeinterface call. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1455 // The target method is determined by <intf_klass, itable_index>. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1456 // The receiver klass is in recv_klass. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1457 // On success, the result will be in method_result, and execution falls through. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1458 // On failure, execution transfers to the given label. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1459 void MacroAssembler::lookup_interface_method(Register recv_klass, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1460 Register intf_klass, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1461 RegisterOrConstant itable_index, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1462 Register method_result, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1463 Register scan_temp, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1464 Register sethi_temp, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1465 Label& L_no_such_interface) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1466 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
|
1467 assert(itable_index.is_constant() || itable_index.as_register() == method_result, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1468 "caller must use same register for non-constant itable index as for method"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1469 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1470 // Compute start of first itableOffsetEntry (which is at the end of the vtable). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1471 int vtable_base = InstanceKlass::vtable_start_offset() * wordSize; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1472 int itentry_off = itableMethodEntry::method_offset_in_bytes(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1473 int logMEsize = exact_log2(itableMethodEntry::size() * wordSize); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1474 int scan_step = itableOffsetEntry::size() * wordSize; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1475 int log_vte_size= exact_log2(vtableEntry::size() * wordSize); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1476 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1477 lwz(scan_temp, InstanceKlass::vtable_length_offset() * wordSize, recv_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1478 // %%% 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
|
1479 // Then the next several instructions would fold away. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1480 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1481 sldi(scan_temp, scan_temp, log_vte_size); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1482 addi(scan_temp, scan_temp, vtable_base); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1483 add(scan_temp, recv_klass, scan_temp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1484 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1485 // 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
|
1486 if (itable_index.is_register()) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1487 Register itable_offset = itable_index.as_register(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1488 sldi(itable_offset, itable_offset, logMEsize); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1489 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
|
1490 add(recv_klass, itable_offset, recv_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1491 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1492 long itable_offset = (long)itable_index.as_constant(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1493 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.
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parents:
diff
changeset
|
1494 add(recv_klass, sethi_temp, recv_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1495 } |
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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.
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parents:
diff
changeset
|
1497 // 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
|
1498 // if (scan->interface() == intf) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1499 // result = (klass + scan->offset() + itable_index); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1500 // } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1501 // } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1502 Label search, found_method; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1503 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1504 for (int peel = 1; peel >= 0; peel--) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1505 // %%%% 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
|
1506 // in the opposite order. This would save a load. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1507 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
|
1508 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1509 // 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
|
1510 // 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
|
1511 // same as when the caller was compiled. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1512 cmpd(CCR0, method_result, intf_klass); |
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 if (peel) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1515 beq(CCR0, found_method); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1516 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1517 bne(CCR0, search); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1518 // (invert the test to fall through to found_method...) |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1521 if (!peel) break; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1522 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1523 bind(search); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1524 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1525 cmpdi(CCR0, method_result, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1526 beq(CCR0, L_no_such_interface); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1527 addi(scan_temp, scan_temp, scan_step); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1528 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1529 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1530 bind(found_method); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1531 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1532 // Got a hit. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1533 int ito_offset = itableOffsetEntry::offset_offset_in_bytes(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1534 lwz(scan_temp, ito_offset, scan_temp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1535 ldx(method_result, scan_temp, recv_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1536 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1537 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1538 // virtual method calling |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1539 void MacroAssembler::lookup_virtual_method(Register recv_klass, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1540 RegisterOrConstant vtable_index, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1541 Register method_result) { |
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 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
|
1544 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1545 const int base = InstanceKlass::vtable_start_offset() * wordSize; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1546 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
|
1547 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1548 if (vtable_index.is_register()) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1549 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
|
1550 add(recv_klass, vtable_index.as_register(), recv_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1551 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1552 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
|
1553 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1554 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
|
1555 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1556 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1557 /////////////////////////////////////////// subtype checking //////////////////////////////////////////// |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1558 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1559 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
|
1560 Register super_klass, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1561 Register temp1_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1562 Register temp2_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1563 Label& L_success, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1564 Label& L_failure) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1565 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1566 const Register check_cache_offset = temp1_reg; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1567 const Register cached_super = temp2_reg; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1568 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1569 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
|
1570 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1571 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
|
1572 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
|
1573 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1574 // 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
|
1575 // 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
|
1576 // 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
|
1577 // type would need its own customized SSA. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1578 // 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
|
1579 // 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
|
1580 // so we get a nicely predicted branch right at the start of the check. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1581 cmpd(CCR0, sub_klass, super_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1582 beq(CCR0, L_success); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1583 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1584 // Check the supertype display: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1585 lwz(check_cache_offset, sco_offset, super_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1586 // The loaded value is the offset from KlassOopDesc. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1587 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1588 ldx(cached_super, check_cache_offset, sub_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1589 cmpd(CCR0, cached_super, super_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1590 beq(CCR0, L_success); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1591 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1592 // This check has worked decisively for primary supers. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1593 // 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
|
1594 // (Secondary supers are interfaces and very deeply nested subtypes.) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1595 // 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
|
1596 // 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
|
1597 // (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
|
1598 // 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
|
1599 // what we need immediately. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1600 // 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
|
1601 // 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
|
1602 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1603 cmpwi(CCR0, check_cache_offset, sc_offset); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1604 bne(CCR0, L_failure); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1605 // bind(slow_path); // fallthru |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1606 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1607 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1608 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
|
1609 Register super_klass, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1610 Register temp1_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1611 Register temp2_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1612 Label* L_success, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1613 Register result_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1614 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
|
1615 const Register temp = temp2_reg; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1616 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1617 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
|
1618 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1619 int source_offset = in_bytes(Klass::secondary_supers_offset()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1620 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
|
1621 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1622 int length_offset = Array<Klass*>::length_offset_in_bytes(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1623 int base_offset = Array<Klass*>::base_offset_in_bytes(); |
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 Label hit, loop, failure, fallthru; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1626 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1627 ld(array_ptr, source_offset, sub_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1628 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1629 //assert(4 == arrayOopDesc::length_length_in_bytes(), "precondition violated."); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1630 lwz(temp, length_offset, array_ptr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1631 cmpwi(CCR0, temp, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1632 beq(CCR0, result_reg!=noreg ? failure : fallthru); // length 0 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1633 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1634 mtctr(temp); // load ctr |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1635 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1636 bind(loop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1637 // Oops in table are NO MORE compressed. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1638 ld(temp, base_offset, array_ptr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1639 cmpd(CCR0, temp, super_klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1640 beq(CCR0, hit); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1641 addi(array_ptr, array_ptr, BytesPerWord); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1642 bdnz(loop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1643 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1644 bind(failure); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1645 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
|
1646 b(fallthru); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1647 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1648 bind(hit); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1649 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
|
1650 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
|
1651 if (L_success != NULL) b(*L_success); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1652 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1653 bind(fallthru); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1654 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1655 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1656 // 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
|
1657 void MacroAssembler::check_klass_subtype(Register sub_klass, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1658 Register super_klass, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1659 Register temp1_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1660 Register temp2_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1661 Label& L_success) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1662 Label L_failure; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1663 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
|
1664 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
|
1665 bind(L_failure); // Fallthru if not successful. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1666 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1667 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1668 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
|
1669 Register temp_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1670 Label& wrong_method_type) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1671 assert_different_registers(mtype_reg, mh_reg, temp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1672 // Compare method type against that of the receiver. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1673 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
|
1674 cmpd(CCR0, temp_reg, mtype_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1675 bne(CCR0, wrong_method_type); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1676 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1677 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1678 RegisterOrConstant MacroAssembler::argument_offset(RegisterOrConstant arg_slot, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1679 Register temp_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1680 int extra_slot_offset) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1681 // cf. TemplateTable::prepare_invoke(), if (load_receiver). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1682 int stackElementSize = Interpreter::stackElementSize; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1683 int offset = extra_slot_offset * stackElementSize; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1684 if (arg_slot.is_constant()) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1685 offset += arg_slot.as_constant() * stackElementSize; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1686 return offset; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1687 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1688 assert(temp_reg != noreg, "must specify"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1689 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
|
1690 if (offset != 0) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1691 addi(temp_reg, temp_reg, offset); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1692 return temp_reg; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1693 } |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1696 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
|
1697 Register mark_reg, Register temp_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1698 Register temp2_reg, Label& done, Label* slow_case) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1699 assert(UseBiasedLocking, "why call this otherwise?"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1700 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1701 #ifdef ASSERT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1702 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
|
1703 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1704 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1705 Label cas_label; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1706 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1707 // 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
|
1708 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
|
1709 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1710 // Biased locking |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1711 // 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
|
1712 // whether the epoch is still valid |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1713 // Note that the runtime guarantees sufficient alignment of JavaThread |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1714 // 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
|
1715 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
|
1716 "biased locking makes assumptions about bit layout"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1717 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1718 if (PrintBiasedLockingStatistics) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1719 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
|
1720 lwz(temp2_reg, 0, temp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1721 addi(temp2_reg, temp2_reg, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1722 stw(temp2_reg, 0, temp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1723 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1724 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1725 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
|
1726 cmpwi(cr_reg, temp_reg, markOopDesc::biased_lock_pattern); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1727 bne(cr_reg, cas_label); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1728 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1729 load_klass_with_trap_null_check(temp_reg, obj_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1730 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1731 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
|
1732 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
|
1733 orr(temp_reg, R16_thread, temp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1734 xorr(temp_reg, mark_reg, temp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1735 andr(temp_reg, temp_reg, temp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1736 cmpdi(cr_reg, temp_reg, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1737 if (PrintBiasedLockingStatistics) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1738 Label l; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1739 bne(cr_reg, l); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1740 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
|
1741 lwz(temp2_reg, 0, mark_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1742 addi(temp2_reg, temp2_reg, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1743 stw(temp2_reg, 0, mark_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1744 // restore mark_reg |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1745 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
|
1746 bind(l); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1747 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1748 beq(cr_reg, done); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1749 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1750 Label try_revoke_bias; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1751 Label try_rebias; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1752 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1753 // 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
|
1754 // 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
|
1755 // 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
|
1756 // 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
|
1757 // header. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1758 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1759 // 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
|
1760 // 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
|
1761 // the bias on this object. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1762 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
|
1763 cmpwi(cr_reg, temp2_reg, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1764 bne(cr_reg, try_revoke_bias); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1765 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1766 // 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
|
1767 // 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
|
1768 // 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
|
1769 // 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
|
1770 // 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
|
1771 // 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
|
1772 // 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
|
1773 // 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
|
1774 // illegal. |
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 int shift_amount = 64 - markOopDesc::epoch_shift; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1777 // 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
|
1778 // [ big part | epoch | little part ] -> [ 0..0 | epoch ] |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1779 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
|
1780 // 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
|
1781 bne(CCR0, try_rebias); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1782 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1783 // 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
|
1784 // 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
|
1785 // 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
|
1786 // 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
|
1787 // 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
|
1788 // 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
|
1789 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
|
1790 markOopDesc::age_mask_in_place | |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1791 markOopDesc::epoch_mask_in_place)); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1792 orr(temp_reg, R16_thread, mark_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1793 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1794 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
|
1795 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1796 // 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
|
1797 fence(); // TODO: replace by MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq ? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1798 cmpxchgd(/*flag=*/cr_reg, /*current_value=*/temp2_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1799 /*compare_value=*/mark_reg, /*exchange_value=*/temp_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1800 /*where=*/obj_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1801 MacroAssembler::MemBarAcq, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1802 MacroAssembler::cmpxchgx_hint_acquire_lock(), |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1803 noreg, slow_case_int); // bail out if failed |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1804 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1805 // 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
|
1806 // 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
|
1807 // 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
|
1808 // interpreter runtime in the slow case. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1809 if (PrintBiasedLockingStatistics) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1810 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
|
1811 lwz(temp2_reg, 0, temp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1812 addi(temp2_reg, temp2_reg, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1813 stw(temp2_reg, 0, temp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1814 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1815 b(done); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1816 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1817 bind(try_rebias); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1818 // 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
|
1819 // 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
|
1820 // 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
|
1821 // 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
|
1822 // 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
|
1823 // 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
|
1824 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
|
1825 orr(temp_reg, R16_thread, temp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1826 load_klass_with_trap_null_check(temp2_reg, obj_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1827 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
|
1828 orr(temp_reg, temp_reg, temp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1829 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1830 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
|
1831 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1832 // 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
|
1833 fence(); // TODO: replace by MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq ? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1834 cmpxchgd(/*flag=*/cr_reg, /*current_value=*/temp2_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1835 /*compare_value=*/mark_reg, /*exchange_value=*/temp_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1836 /*where=*/obj_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1837 MacroAssembler::MemBarAcq, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1838 MacroAssembler::cmpxchgx_hint_acquire_lock(), |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1839 noreg, slow_case_int); // bail out if failed |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1840 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1841 // 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
|
1842 // 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
|
1843 // 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
|
1844 // interpreter runtime in the slow case. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1845 if (PrintBiasedLockingStatistics) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1846 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
|
1847 lwz(temp2_reg, 0, temp_reg); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1848 addi(temp2_reg, temp2_reg, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1849 stw(temp2_reg, 0, temp_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1850 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1851 b(done); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1852 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1853 bind(try_revoke_bias); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1854 // The prototype mark in the klass doesn't have the bias bit set any |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1855 // more, indicating that objects of this data type are not supposed |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1856 // to be biased any more. We are going to try to reset the mark of |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1857 // this object to the prototype value and fall through to the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1858 // CAS-based locking scheme. Note that if our CAS fails, it means |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1859 // that another thread raced us for the privilege of revoking the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1860 // bias of this particular object, so it's okay to continue in the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1861 // normal locking code. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1862 load_klass_with_trap_null_check(temp_reg, obj_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1863 ld(temp_reg, in_bytes(Klass::prototype_header_offset()), temp_reg); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1864 andi(temp2_reg, mark_reg, markOopDesc::age_mask_in_place); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1865 orr(temp_reg, temp_reg, temp2_reg); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1866 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1867 assert(oopDesc::mark_offset_in_bytes() == 0, "offset of _mark is not 0"); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1868 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1869 // CmpxchgX sets cr_reg to cmpX(temp2_reg, mark_reg). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1870 fence(); // TODO: replace by MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq ? |
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parents:
diff
changeset
|
1871 cmpxchgd(/*flag=*/cr_reg, /*current_value=*/temp2_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1872 /*compare_value=*/mark_reg, /*exchange_value=*/temp_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1873 /*where=*/obj_reg, |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1874 MacroAssembler::MemBarAcq, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1875 MacroAssembler::cmpxchgx_hint_acquire_lock()); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1876 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1877 // reload markOop in mark_reg before continuing with lightweight locking |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1878 ld(mark_reg, oopDesc::mark_offset_in_bytes(), obj_reg); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1879 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1880 // Fall through to the normal CAS-based lock, because no matter what |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1881 // the result of the above CAS, some thread must have succeeded in |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1882 // removing the bias bit from the object's header. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1883 if (PrintBiasedLockingStatistics) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1884 Label l; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1885 bne(cr_reg, l); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1886 load_const(temp_reg, (address) BiasedLocking::revoked_lock_entry_count_addr(), temp2_reg); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1887 lwz(temp2_reg, 0, temp_reg); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1888 addi(temp2_reg, temp2_reg, 1); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1889 stw(temp2_reg, 0, temp_reg); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1890 bind(l); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1891 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1892 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1893 bind(cas_label); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1894 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1895 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1896 void MacroAssembler::biased_locking_exit (ConditionRegister cr_reg, Register mark_addr, Register temp_reg, Label& done) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1897 // Check for biased locking unlock case, which is a no-op |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1898 // Note: we do not have to check the thread ID for two reasons. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1899 // First, the interpreter checks for IllegalMonitorStateException at |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1900 // a higher level. Second, if the bias was revoked while we held the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1901 // lock, the object could not be rebiased toward another thread, so |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1902 // the bias bit would be clear. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1903 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1904 ld(temp_reg, 0, mark_addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1905 andi(temp_reg, temp_reg, markOopDesc::biased_lock_mask_in_place); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1906 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1907 cmpwi(cr_reg, temp_reg, markOopDesc::biased_lock_pattern); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1908 beq(cr_reg, done); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1909 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1910 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1911 // "The box" is the space on the stack where we copy the object mark. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1912 void MacroAssembler::compiler_fast_lock_object(ConditionRegister flag, Register oop, Register box, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1913 Register temp, Register displaced_header, Register current_header) { |
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parents:
diff
changeset
|
1914 assert_different_registers(oop, box, temp, displaced_header, current_header); |
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parents:
diff
changeset
|
1915 assert(flag != CCR0, "bad condition register"); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1916 Label cont; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1917 Label object_has_monitor; |
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parents:
diff
changeset
|
1918 Label cas_failed; |
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parents:
diff
changeset
|
1919 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1920 // Load markOop from object into displaced_header. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1921 ld(displaced_header, oopDesc::mark_offset_in_bytes(), oop); |
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parents:
diff
changeset
|
1922 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1923 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1924 // Always do locking in runtime. |
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parents:
diff
changeset
|
1925 if (EmitSync & 0x01) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1926 cmpdi(flag, oop, 0); // Oop can't be 0 here => always false. |
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parents:
diff
changeset
|
1927 return; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1928 } |
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parents:
diff
changeset
|
1929 |
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parents:
diff
changeset
|
1930 if (UseBiasedLocking) { |
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parents:
diff
changeset
|
1931 biased_locking_enter(flag, oop, displaced_header, temp, current_header, cont); |
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parents:
diff
changeset
|
1932 } |
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parents:
diff
changeset
|
1933 |
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parents:
diff
changeset
|
1934 // Handle existing monitor. |
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parents:
diff
changeset
|
1935 if ((EmitSync & 0x02) == 0) { |
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parents:
diff
changeset
|
1936 // The object has an existing monitor iff (mark & monitor_value) != 0. |
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parents:
diff
changeset
|
1937 andi_(temp, displaced_header, markOopDesc::monitor_value); |
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parents:
diff
changeset
|
1938 bne(CCR0, object_has_monitor); |
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parents:
diff
changeset
|
1939 } |
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parents:
diff
changeset
|
1940 |
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parents:
diff
changeset
|
1941 // Set displaced_header to be (markOop of object | UNLOCK_VALUE). |
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parents:
diff
changeset
|
1942 ori(displaced_header, displaced_header, markOopDesc::unlocked_value); |
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parents:
diff
changeset
|
1943 |
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parents:
diff
changeset
|
1944 // Load Compare Value application register. |
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parents:
diff
changeset
|
1945 |
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parents:
diff
changeset
|
1946 // Initialize the box. (Must happen before we update the object mark!) |
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parents:
diff
changeset
|
1947 std(displaced_header, BasicLock::displaced_header_offset_in_bytes(), box); |
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parents:
diff
changeset
|
1948 |
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parents:
diff
changeset
|
1949 // Must fence, otherwise, preceding store(s) may float below cmpxchg. |
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parents:
diff
changeset
|
1950 // Compare object markOop with mark and if equal exchange scratch1 with object markOop. |
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parents:
diff
changeset
|
1951 // CmpxchgX sets cr_reg to cmpX(current, displaced). |
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parents:
diff
changeset
|
1952 cmpxchgd(/*flag=*/flag, |
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parents:
diff
changeset
|
1953 /*current_value=*/current_header, |
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parents:
diff
changeset
|
1954 /*compare_value=*/displaced_header, |
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parents:
diff
changeset
|
1955 /*exchange_value=*/box, |
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parents:
diff
changeset
|
1956 /*where=*/oop, |
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parents:
diff
changeset
|
1957 MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq, |
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parents:
diff
changeset
|
1958 MacroAssembler::cmpxchgx_hint_acquire_lock(), |
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parents:
diff
changeset
|
1959 noreg, |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1960 &cas_failed); |
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parents:
diff
changeset
|
1961 assert(oopDesc::mark_offset_in_bytes() == 0, "offset of _mark is not 0"); |
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parents:
diff
changeset
|
1962 |
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parents:
diff
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|
1963 // If the compare-and-exchange succeeded, then we found an unlocked |
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|
1964 // object and we have now locked it. |
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parents:
diff
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|
1965 b(cont); |
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parents:
diff
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|
1966 |
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parents:
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|
1967 bind(cas_failed); |
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parents:
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|
1968 // We did not see an unlocked object so try the fast recursive case. |
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parents:
diff
changeset
|
1969 |
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parents:
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|
1970 // Check if the owner is self by comparing the value in the markOop of object |
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parents:
diff
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|
1971 // (current_header) with the stack pointer. |
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parents:
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|
1972 sub(current_header, current_header, R1_SP); |
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parents:
diff
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|
1973 load_const_optimized(temp, (address) (~(os::vm_page_size()-1) | |
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parents:
diff
changeset
|
1974 markOopDesc::lock_mask_in_place)); |
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parents:
diff
changeset
|
1975 |
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parents:
diff
changeset
|
1976 and_(R0/*==0?*/, current_header, temp); |
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parents:
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|
1977 // If condition is true we are cont and hence we can store 0 as the |
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parents:
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|
1978 // displaced header in the box, which indicates that it is a recursive lock. |
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parents:
diff
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|
1979 mcrf(flag,CCR0); |
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parents:
diff
changeset
|
1980 std(R0/*==0, perhaps*/, BasicLock::displaced_header_offset_in_bytes(), box); |
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parents:
diff
changeset
|
1981 |
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parents:
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|
1982 // Handle existing monitor. |
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parents:
diff
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|
1983 if ((EmitSync & 0x02) == 0) { |
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parents:
diff
changeset
|
1984 b(cont); |
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parents:
diff
changeset
|
1985 |
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parents:
diff
changeset
|
1986 bind(object_has_monitor); |
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parents:
diff
changeset
|
1987 // The object's monitor m is unlocked iff m->owner == NULL, |
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parents:
diff
changeset
|
1988 // otherwise m->owner may contain a thread or a stack address. |
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parents:
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changeset
|
1989 // |
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parents:
diff
changeset
|
1990 // Try to CAS m->owner from NULL to current thread. |
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parents:
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|
1991 addi(temp, displaced_header, ObjectMonitor::owner_offset_in_bytes()-markOopDesc::monitor_value); |
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parents:
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|
1992 li(displaced_header, 0); |
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parents:
diff
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|
1993 // CmpxchgX sets flag to cmpX(current, displaced). |
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parents:
diff
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|
1994 cmpxchgd(/*flag=*/flag, |
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parents:
diff
changeset
|
1995 /*current_value=*/current_header, |
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parents:
diff
changeset
|
1996 /*compare_value=*/displaced_header, |
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parents:
diff
changeset
|
1997 /*exchange_value=*/R16_thread, |
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parents:
diff
changeset
|
1998 /*where=*/temp, |
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parents:
diff
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|
1999 MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq, |
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parents:
diff
changeset
|
2000 MacroAssembler::cmpxchgx_hint_acquire_lock()); |
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parents:
diff
changeset
|
2001 |
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parents:
diff
changeset
|
2002 // Store a non-null value into the box. |
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parents:
diff
changeset
|
2003 std(box, BasicLock::displaced_header_offset_in_bytes(), box); |
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parents:
diff
changeset
|
2004 |
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parents:
diff
changeset
|
2005 # ifdef ASSERT |
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parents:
diff
changeset
|
2006 bne(flag, cont); |
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parents:
diff
changeset
|
2007 // We have acquired the monitor, check some invariants. |
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parents:
diff
changeset
|
2008 addi(/*monitor=*/temp, temp, -ObjectMonitor::owner_offset_in_bytes()); |
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parents:
diff
changeset
|
2009 // Invariant 1: _recursions should be 0. |
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parents:
diff
changeset
|
2010 //assert(ObjectMonitor::recursions_size_in_bytes() == 8, "unexpected size"); |
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parents:
diff
changeset
|
2011 asm_assert_mem8_is_zero(ObjectMonitor::recursions_offset_in_bytes(), temp, |
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parents:
diff
changeset
|
2012 "monitor->_recursions should be 0", -1); |
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goetz
parents:
diff
changeset
|
2013 // Invariant 2: OwnerIsThread shouldn't be 0. |
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goetz
parents:
diff
changeset
|
2014 //assert(ObjectMonitor::OwnerIsThread_size_in_bytes() == 4, "unexpected size"); |
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parents:
diff
changeset
|
2015 //asm_assert_mem4_isnot_zero(ObjectMonitor::OwnerIsThread_offset_in_bytes(), temp, |
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parents:
diff
changeset
|
2016 // "monitor->OwnerIsThread shouldn't be 0", -1); |
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parents:
diff
changeset
|
2017 # endif |
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parents:
diff
changeset
|
2018 } |
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parents:
diff
changeset
|
2019 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2020 bind(cont); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2021 // flag == EQ indicates success |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2022 // flag == NE indicates failure |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2023 } |
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goetz
parents:
diff
changeset
|
2024 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2025 void MacroAssembler::compiler_fast_unlock_object(ConditionRegister flag, Register oop, Register box, |
ec28f9c041ff
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parents:
diff
changeset
|
2026 Register temp, Register displaced_header, Register current_header) { |
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parents:
diff
changeset
|
2027 assert_different_registers(oop, box, temp, displaced_header, current_header); |
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goetz
parents:
diff
changeset
|
2028 assert(flag != CCR0, "bad condition register"); |
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goetz
parents:
diff
changeset
|
2029 Label cont; |
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goetz
parents:
diff
changeset
|
2030 Label object_has_monitor; |
ec28f9c041ff
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goetz
parents:
diff
changeset
|
2031 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2032 // Always do locking in runtime. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2033 if (EmitSync & 0x01) { |
ec28f9c041ff
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goetz
parents:
diff
changeset
|
2034 cmpdi(flag, oop, 0); // Oop can't be 0 here => always false. |
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goetz
parents:
diff
changeset
|
2035 return; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2036 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2037 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2038 if (UseBiasedLocking) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2039 biased_locking_exit(flag, oop, current_header, cont); |
ec28f9c041ff
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goetz
parents:
diff
changeset
|
2040 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2041 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2042 // Find the lock address and load the displaced header from the stack. |
ec28f9c041ff
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goetz
parents:
diff
changeset
|
2043 ld(displaced_header, BasicLock::displaced_header_offset_in_bytes(), box); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2044 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2045 // 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
|
2046 cmpdi(flag, displaced_header, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2047 beq(flag, cont); |
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 // 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
|
2052 ld(current_header, oopDesc::mark_offset_in_bytes(), oop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2053 andi(temp, current_header, markOopDesc::monitor_value); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2054 cmpdi(flag, temp, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2055 bne(flag, object_has_monitor); |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2058 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2059 // 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
|
2060 // 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
|
2061 // Cmpxchg sets flag to cmpd(current_header, box). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2062 cmpxchgd(/*flag=*/flag, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2063 /*current_value=*/current_header, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2064 /*compare_value=*/box, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2065 /*exchange_value=*/displaced_header, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2066 /*where=*/oop, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2067 MacroAssembler::MemBarRel, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2068 MacroAssembler::cmpxchgx_hint_release_lock(), |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2069 noreg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2070 &cont); |
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 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
|
2073 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2074 // Handle existing monitor. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2075 if ((EmitSync & 0x02) == 0) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2076 b(cont); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2077 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2078 bind(object_has_monitor); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2079 addi(current_header, current_header, -markOopDesc::monitor_value); // monitor |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2080 ld(temp, ObjectMonitor::owner_offset_in_bytes(), current_header); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2081 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
|
2082 xorr(temp, R16_thread, temp); // Will be 0 if we are the owner. |
ec28f9c041ff
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goetz
parents:
diff
changeset
|
2083 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
|
2084 cmpdi(flag, temp, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2085 bne(flag, cont); |
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 ld(temp, ObjectMonitor::EntryList_offset_in_bytes(), current_header); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2088 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
|
2089 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
|
2090 cmpdi(flag, temp, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2091 bne(flag, cont); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2092 release(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2093 std(temp, ObjectMonitor::owner_offset_in_bytes(), current_header); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2094 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2095 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2096 bind(cont); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2097 // flag == EQ indicates success |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2098 // flag == NE indicates failure |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2099 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2100 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2101 // 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
|
2102 // 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
|
2103 // 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
|
2104 // due to cache line collision. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2105 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
|
2106 srdi(tmp2, thread, os::get_serialize_page_shift_count()); |
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 int mask = os::vm_page_size() - sizeof(int); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2109 if (Assembler::is_simm(mask, 16)) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2110 andi(tmp2, tmp2, mask); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2111 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2112 lis(tmp1, (int)((signed short) (mask >> 16))); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2113 ori(tmp1, tmp1, mask & 0x0000ffff); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2114 andr(tmp2, tmp2, tmp1); |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2117 load_const(tmp1, (long) os::get_memory_serialize_page()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2118 release(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2119 stwx(R0, tmp1, tmp2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2120 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2121 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2122 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2123 // GC barrier helper macros |
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 // Write the card table byte if needed. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2126 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
|
2127 CardTableModRefBS* bs = (CardTableModRefBS*) Universe::heap()->barrier_set(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2128 assert(bs->kind() == BarrierSet::CardTableModRef || |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2129 bs->kind() == BarrierSet::CardTableExtension, "wrong barrier"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2130 #ifdef ASSERT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2131 cmpdi(CCR0, Rnew_val, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2132 asm_assert_ne("null oop not allowed", 0x321); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2133 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2134 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
|
2135 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2136 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2137 // Write the card table byte. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2138 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
|
2139 assert_different_registers(Robj, Rtmp, R0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2140 load_const_optimized(Rtmp, (address)byte_map_base, R0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2141 srdi(Robj, Robj, CardTableModRefBS::card_shift); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2142 li(R0, 0); // dirty |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2143 if (UseConcMarkSweepGC) release(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2144 stbx(R0, Rtmp, Robj); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2145 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2146 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2147 #ifndef SERIALGC |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2148 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2149 // General G1 pre-barrier generator. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2150 // 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
|
2151 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
|
2152 Register Rtmp1, Register Rtmp2, bool needs_frame) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2153 Label runtime, filtered; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2154 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2155 // Is marking active? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2156 if (in_bytes(PtrQueue::byte_width_of_active()) == 4) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2157 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
|
2158 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2159 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
|
2160 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
|
2161 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2162 cmpdi(CCR0, Rtmp1, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2163 beq(CCR0, filtered); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2164 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2165 // Do we need to load the previous value? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2166 if (Robj != noreg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2167 // Load the previous value... |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2168 if (UseCompressedOops) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2169 lwz(Rpre_val, offset, Robj); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2170 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2171 ld(Rpre_val, offset, Robj); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2172 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2173 // Previous value has been loaded into Rpre_val. |
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 assert(Rpre_val != noreg, "must have a real register"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2176 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2177 // Is the previous value null? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2178 cmpdi(CCR0, Rpre_val, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2179 beq(CCR0, filtered); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2180 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2181 if (Robj != noreg && UseCompressedOops) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2182 decode_heap_oop_not_null(Rpre_val); |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2185 // 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
|
2186 // 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
|
2187 // 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
|
2188 // 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
|
2189 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2190 // 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
|
2191 // Is index == 0? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2192 // (The index field is typed as size_t.) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2193 const Register Rbuffer = Rtmp1, Rindex = Rtmp2; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2194 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2195 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
|
2196 cmpdi(CCR0, Rindex, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2197 beq(CCR0, runtime); // If index == 0, goto runtime. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2198 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
|
2199 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2200 addi(Rindex, Rindex, -wordSize); // Decrement index. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2201 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
|
2202 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2203 // Record the previous value. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2204 stdx(Rpre_val, Rbuffer, Rindex); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2205 b(filtered); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2206 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2207 bind(runtime); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2208 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2209 // VM call need frame to access(write) O register. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2210 if (needs_frame) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2211 save_LR_CR(Rtmp1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2212 push_frame_abi112(0, Rtmp2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2213 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2214 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2215 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
|
2216 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
|
2217 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
|
2218 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2219 if (needs_frame) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2220 pop_frame(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2221 restore_LR_CR(Rtmp1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2222 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2223 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2224 bind(filtered); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2225 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2226 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2227 // General G1 post-barrier generator |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2228 // Store cross-region card. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2229 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
|
2230 Label runtime, filtered_int; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2231 Label& filtered = (filtered_ext != NULL) ? *filtered_ext : filtered_int; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2232 assert_different_registers(Rstore_addr, Rnew_val, Rtmp1, Rtmp2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2233 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2234 G1SATBCardTableModRefBS* bs = (G1SATBCardTableModRefBS*) Universe::heap()->barrier_set(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2235 assert(bs->kind() == BarrierSet::G1SATBCT || |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2236 bs->kind() == BarrierSet::G1SATBCTLogging, "wrong barrier"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2237 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2238 // Does store cross heap regions? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2239 if (G1RSBarrierRegionFilter) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2240 xorr(Rtmp1, Rstore_addr, Rnew_val); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2241 srdi_(Rtmp1, Rtmp1, HeapRegion::LogOfHRGrainBytes); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2242 beq(CCR0, filtered); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2243 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2244 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2245 // Crosses regions, storing NULL? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2246 #ifdef ASSERT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2247 cmpdi(CCR0, Rnew_val, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2248 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
|
2249 //beq(CCR0, filtered); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2250 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2251 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2252 // Storing region crossing non-NULL, is card already dirty? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2253 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
|
2254 const Register Rcard_addr = Rtmp1; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2255 Register Rbase = Rtmp2; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2256 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
|
2257 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2258 srdi(Rcard_addr, Rstore_addr, CardTableModRefBS::card_shift); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2259 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2260 // Get the address of the card. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2261 lbzx(/*card value*/ Rtmp3, Rbase, Rcard_addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2262 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2263 assert(CardTableModRefBS::dirty_card_val() == 0, "otherwise check this code"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2264 cmpwi(CCR0, Rtmp3 /* card value */, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2265 beq(CCR0, filtered); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2266 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2267 // 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
|
2268 // Dirty card and log. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2269 li(Rtmp3, 0); // dirty |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2270 //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
|
2271 stbx(Rtmp3, Rbase, Rcard_addr); |
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 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
|
2274 Rbase = noreg; // end of lifetime |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2275 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2276 const Register Rqueue_index = Rtmp2, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2277 Rqueue_buf = Rtmp3; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2278 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
|
2279 cmpdi(CCR0, Rqueue_index, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2280 beq(CCR0, runtime); // index == 0 then jump to runtime |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2281 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
|
2282 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2283 addi(Rqueue_index, Rqueue_index, -wordSize); // decrement index |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2284 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
|
2285 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2286 stdx(Rcard_addr, Rqueue_buf, Rqueue_index); // store card |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2287 b(filtered); |
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 bind(runtime); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2290 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2291 // Save the live input values. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2292 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
|
2293 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2294 bind(filtered_int); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2295 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2296 #endif // SERIALGC |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2297 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2298 // 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
|
2299 // in frame_ppc64.hpp. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2300 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
|
2301 // 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
|
2302 // 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
|
2303 // 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
|
2304 // get here so doesn't need to be set.) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2305 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2306 // 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
|
2307 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
|
2308 "last_Java_pc not zeroed before leaving Java", 0x200); |
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 // 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
|
2311 // 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
|
2312 // 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
|
2313 // 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
|
2314 // standard frame linkage where we can find the pc. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2315 if (last_Java_pc != noreg) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2316 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
|
2317 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2318 // set last_Java_sp last |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2319 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
|
2320 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2321 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2322 void MacroAssembler::reset_last_Java_frame(void) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2323 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
|
2324 R16_thread, "SP was not set, still zero", 0x202); |
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 BLOCK_COMMENT("reset_last_Java_frame {"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2327 li(R0, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2328 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2329 // _last_Java_sp = 0 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2330 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
|
2331 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2332 // _last_Java_pc = 0 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2333 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
|
2334 BLOCK_COMMENT("} reset_last_Java_frame"); |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2337 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
|
2338 assert_different_registers(sp, tmp1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2339 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2340 // 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
|
2341 // TOP_IJAVA_FRAME_ABI. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2342 // 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
|
2343 #ifdef CC_INTERP |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2344 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
|
2345 #else |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2346 Unimplemented(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2347 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2348 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2349 set_last_Java_frame(/*sp=*/sp, /*pc=*/tmp1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2350 } |
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 void MacroAssembler::get_vm_result(Register oop_result) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2353 // Read: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2354 // R16_thread |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2355 // R16_thread->in_bytes(JavaThread::vm_result_offset()) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2356 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2357 // Updated: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2358 // oop_result |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2359 // R16_thread->in_bytes(JavaThread::vm_result_offset()) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2360 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2361 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
|
2362 li(R0, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2363 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
|
2364 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2365 verify_oop(oop_result); |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2368 void MacroAssembler::get_vm_result_2(Register metadata_result) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2369 // Read: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2370 // R16_thread |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2371 // R16_thread->in_bytes(JavaThread::vm_result_2_offset()) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2372 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2373 // Updated: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2374 // metadata_result |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2375 // R16_thread->in_bytes(JavaThread::vm_result_2_offset()) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2376 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2377 ld(metadata_result, in_bytes(JavaThread::vm_result_2_offset()), R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2378 li(R0, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2379 std(R0, in_bytes(JavaThread::vm_result_2_offset()), R16_thread); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2380 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2381 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2382 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2383 void MacroAssembler::encode_klass_not_null(Register dst, Register src) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2384 if (src == noreg) src = dst; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2385 if (Universe::narrow_klass_base() != NULL) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2386 // heapbased |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2387 assert(Universe::narrow_klass_shift() != 0, "sanity"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2388 sub(dst, src, R30); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2389 srdi(dst, dst, Universe::narrow_klass_shift()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2390 } else if (Universe::narrow_klass_shift() != 0) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2391 // zerobased |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2392 srdi(dst, src, Universe::narrow_klass_shift()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2393 } else if (src != dst) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2394 // unscaled |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2395 mr(dst, src); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2396 } |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2399 void MacroAssembler::store_klass(Register dst_oop, Register klass, Register ck) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2400 if (UseCompressedKlassPointers) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2401 encode_klass_not_null(ck, klass); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2402 stw(ck, oopDesc::klass_offset_in_bytes(), dst_oop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2403 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2404 std(klass, oopDesc::klass_offset_in_bytes(), dst_oop); |
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 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2407 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2408 void MacroAssembler::decode_klass_not_null(Register dst, Register src) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2409 if (src == noreg) src = dst; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2410 if (Universe::narrow_klass_base() != NULL) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2411 // heapbased |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2412 assert(Universe::narrow_klass_shift() != 0, "sanity"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2413 sldi(dst, src, Universe::narrow_klass_shift()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2414 add(dst, dst, R30); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2415 } else if (Universe::narrow_klass_shift() != 0) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2416 // zerobased |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2417 sldi(dst, src, Universe::narrow_klass_shift()); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2418 } else if (src != dst) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2419 // unscaled |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2420 mr(dst, src); |
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 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2423 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2424 void MacroAssembler::load_klass(Register dst, Register src) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2425 if (UseCompressedKlassPointers) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2426 lwz(dst, oopDesc::klass_offset_in_bytes(), src); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2427 // Attention: no null check here! |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2428 decode_klass_not_null(dst, dst); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2429 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2430 ld(dst, oopDesc::klass_offset_in_bytes(), src); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2431 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2432 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2433 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2434 void MacroAssembler::load_klass_with_trap_null_check(Register dst, Register src) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2435 if (false NOT_LINUX(|| true) /*!os::zero_page_read_protected()*/) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2436 if (TrapBasedNullChecks) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2437 trap_null_check(src); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2438 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2439 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2440 load_klass(dst, src); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2441 } |
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 void MacroAssembler::reinit_heapbase(Register d, Register tmp) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2444 if (UseCompressedOops || UseCompressedKlassPointers) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2445 load_const(R30, Universe::narrow_ptrs_base_addr(), tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2446 ld(R30, 0, R30); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2447 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2448 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2449 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2450 /////////////////////////////////////////// String intrinsics //////////////////////////////////////////// |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2451 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2452 // Search for a single jchar in an jchar[]. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2453 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2454 // Assumes that result differs from all other registers. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2455 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2456 // Haystack, needle are the addresses of jchar-arrays. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2457 // NeedleChar is needle[0] if it is known at compile time. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2458 // Haycnt is the length of the haystack. We assume haycnt >=1. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2459 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2460 // Preserves haystack, haycnt, kills all other registers. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2461 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2462 // If needle == R0, we search for the constant needleChar. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2463 void MacroAssembler::string_indexof_1(Register result, Register haystack, Register haycnt, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2464 Register needle, jchar needleChar, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2465 Register tmp1, Register tmp2) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2466 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2467 assert_different_registers(result, haystack, haycnt, needle, tmp1, tmp2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2468 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2469 Label L_InnerLoop, L_FinalCheck, L_Found1, L_Found2, L_Found3, L_NotFound, L_End; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2470 Register needle0 = needle, // Contains needle[0]. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2471 addr = tmp1, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2472 ch1 = tmp2, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2473 ch2 = R0; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2474 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2475 //2 (variable) or 3 (const): |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2476 if (needle != R0) lhz(needle0, 0, needle); // Preload needle character, needle has len==1. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2477 dcbtct(haystack, 0x00); // Indicate R/O access to haystack. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2478 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2479 srwi_(tmp2, haycnt, 1); // Shift right by exact_log2(UNROLL_FACTOR). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2480 mr(addr, haystack); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2481 beq(CCR0, L_FinalCheck); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2482 mtctr(tmp2); // Move to count register. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2483 //8: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2484 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
|
2485 lhz(ch1, 0, addr); // Load characters from haystack. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2486 lhz(ch2, 2, addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2487 (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
|
2488 (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
|
2489 beq(CCR0, L_Found1); // Did we find the needle? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2490 beq(CCR1, L_Found2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2491 addi(addr, addr, 4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2492 bdnz(L_InnerLoop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2493 //16: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2494 bind(L_FinalCheck); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2495 andi_(R0, haycnt, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2496 beq(CCR0, L_NotFound); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2497 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
|
2498 (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
|
2499 beq(CCR1, L_Found3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2500 //21: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2501 bind(L_NotFound); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2502 li(result, -1); // Not found. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2503 b(L_End); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2504 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2505 bind(L_Found2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2506 addi(addr, addr, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2507 //24: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2508 bind(L_Found1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2509 bind(L_Found3); // Return index ... |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2510 subf(addr, haystack, addr); // relative to haystack, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2511 srdi(result, addr, 1); // in characters. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2512 bind(L_End); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2513 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2514 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2515 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2516 // Implementation of IndexOf for jchar arrays. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2517 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2518 // 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
|
2519 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2520 // Preserves registers haystack, needle. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2521 // Kills registers haycnt, needlecnt. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2522 // Assumes that result differs from all other registers. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2523 // Haystack, needle are the addresses of jchar-arrays. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2524 // Haycnt, needlecnt are the lengths of them, respectively. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2525 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2526 // 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
|
2527 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
|
2528 Register needle, ciTypeArray* needle_values, Register needlecnt, int needlecntval, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2529 Register tmp1, Register tmp2, Register tmp3, Register tmp4) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2530 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2531 // Ensure 0<needlecnt<=haycnt in ideal graph as prerequisite! |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2532 Label L_TooShort, L_Found, L_NotFound, L_End; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2533 Register last_addr = haycnt, // Kill haycnt at the beginning. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2534 addr = tmp1, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2535 n_start = tmp2, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2536 ch1 = tmp3, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2537 ch2 = R0; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2538 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2539 // ************************************************************************************************** |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2540 // 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
|
2541 // ************************************************************************************************** |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2542 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2543 //1 (variable) or 3 (const): |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2544 dcbtct(needle, 0x00); // Indicate R/O access to str1. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2545 dcbtct(haystack, 0x00); // Indicate R/O access to str2. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2546 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2547 // 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
|
2548 if (needlecntval == 0) { // variable needlecnt |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2549 //3: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2550 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
|
2551 addi(addr, haystack, -2); // Accesses use pre-increment. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2552 cmpwi(CCR6, needlecnt, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2553 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
|
2554 slwi(ch1, ch1, 1); // Scale to number of bytes. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2555 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
|
2556 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
|
2557 addi(needlecnt, needlecnt, -2); // Rest of needle. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2558 } else { // constant needlecnt |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2559 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
|
2560 assert((needlecntval & 0x7fff) == needlecntval, "wrong immediate"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2561 //5: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2562 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
|
2563 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
|
2564 addi(addr, haystack, -2); // Accesses use pre-increment. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2565 slwi(ch1, ch1, 1); // Scale to number of bytes. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2566 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
|
2567 li(needlecnt, needlecntval-2); // Rest of needle. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2568 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2569 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2570 // Main Loop (now we have at least 3 characters). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2571 //11: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2572 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
|
2573 bind(L_OuterLoop); // Search for 1st 2 characters. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2574 Register addr_diff = tmp4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2575 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
|
2576 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
|
2577 srdi_(ch2, addr_diff, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2578 beq(CCR0, L_FinalCheck); // 2 characters left? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2579 mtctr(ch2); // addr_diff/4 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2580 //16: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2581 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
|
2582 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
|
2583 lwz(ch2, 2, addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2584 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
|
2585 cmpw(CCR1, ch2, n_start); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2586 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
|
2587 beq(CCR1, L_Comp2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2588 addi(addr, addr, 4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2589 bdnz(L_InnerLoop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2590 //24: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2591 bind(L_FinalCheck); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2592 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
|
2593 beq(CCR0, L_NotFound); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2594 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
|
2595 cmpw(CCR1, ch1, n_start); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2596 beq(CCR1, L_Comp3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2597 //29: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2598 bind(L_NotFound); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2599 li(result, -1); // not found |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2600 b(L_End); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2601 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2602 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2603 // ************************************************************************************************** |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2604 // 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
|
2605 // ************************************************************************************************** |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2606 //31: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2607 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
|
2608 int nopcnt = 5; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2609 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
|
2610 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
|
2611 Label L_OneCharLoop; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2612 bind(L_TooShort); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2613 mtctr(haycnt); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2614 lhz(n_start, 0, needle); // First character of needle |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2615 bind(L_OneCharLoop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2616 lhzu(ch1, 2, addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2617 cmpw(CCR1, ch1, n_start); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2618 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
|
2619 bdnz(L_OneCharLoop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2620 li(result, -1); // Not found. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2621 b(L_End); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2622 } // 8 instructions, so no impact on alignment. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2623 for (int x = 0; x < nopcnt; ++x) nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2624 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2625 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2626 // ************************************************************************************************** |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2627 // 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
|
2628 // ************************************************************************************************** |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2629 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2630 // Compare the rest |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2631 //36 if needlecntval==0, else 37: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2632 bind(L_Comp2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2633 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
|
2634 bind(L_Comp1); // Addr points to possible needle start. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2635 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
|
2636 if (needlecntval != 2) { // Const needlecnt==2? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2637 if (needlecntval != 3) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2638 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
|
2639 Register ind_reg = tmp4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2640 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
|
2641 mtctr(needlecnt); // Decremented by 2, still > 0. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2642 //40: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2643 Label L_CompLoop; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2644 bind(L_CompLoop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2645 lhzx(ch2, needle, ind_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2646 lhzx(ch1, addr, ind_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2647 cmpw(CCR1, ch1, ch2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2648 bne(CCR1, L_OuterLoop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2649 addi(ind_reg, ind_reg, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2650 bdnz(L_CompLoop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2651 } 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
|
2652 lhz(ch2, 2*2, needle); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2653 lhz(ch1, 2*2, addr); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2654 cmpw(CCR1, ch1, ch2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2655 bne(CCR1, L_OuterLoop); |
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 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2658 // Return index ... |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2659 //46: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2660 bind(L_Found); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2661 subf(addr, haystack, addr); // relative to haystack, ... |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2662 srdi(result, addr, 1); // in characters. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2663 //48: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2664 bind(L_End); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2665 } |
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 // Implementation of Compare for jchar arrays. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2668 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2669 // Kills the registers str1, str2, cnt1, cnt2. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2670 // Kills cr0, ctr. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2671 // Assumes that result differes from the input registers. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2672 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
|
2673 Register result_reg, Register tmp_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2674 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
|
2675 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2676 Label Ldone, Lslow_case, Lslow_loop, Lfast_loop; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2677 Register cnt_diff = R0, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2678 limit_reg = cnt1_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2679 chr1_reg = result_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2680 chr2_reg = cnt2_reg, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2681 addr_diff = str2_reg; |
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 // Offset 0 should be 32 byte aligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2684 //-4: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2685 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
|
2686 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
|
2687 //-2: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2688 // 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
|
2689 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
|
2690 subf_(addr_diff, str1_reg, str2_reg); // alias? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2691 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
|
2692 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
|
2693 mr(cnt_diff, result_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2694 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
|
2695 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
|
2696 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
|
2697 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2698 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
|
2699 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
|
2700 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
|
2701 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
|
2702 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
|
2703 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2704 // Set loop counter by scaling down tmp_reg |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2705 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
|
2706 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
|
2707 andi(limit_reg, tmp_reg, 4-1); // remaining characters |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2708 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2709 // 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
|
2710 mtctr(chr2_reg); // (min(cnt1, cnt2)-1)/4 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2711 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
|
2712 //16: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2713 // Compare the rest of the characters |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2714 bind(Lfast_loop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2715 ld(chr1_reg, 0, str1_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2716 ldx(chr2_reg, str1_reg, addr_diff); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2717 cmpd(CCR0, chr2_reg, chr1_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2718 bne(CCR0, Lslow_case); // return chr1_reg |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2719 addi(str1_reg, str1_reg, 4*2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2720 bdnz(Lfast_loop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2721 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
|
2722 //23: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2723 bind(Lslow_case); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2724 mtctr(limit_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2725 //24: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2726 bind(Lslow_loop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2727 lhz(chr1_reg, 0, str1_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2728 lhzx(chr2_reg, str1_reg, addr_diff); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2729 subf_(result_reg, chr2_reg, chr1_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2730 bne(CCR0, Ldone); // return chr1_reg |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2731 addi(str1_reg, str1_reg, 1*2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2732 bdnz(Lslow_loop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2733 //30: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2734 // 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
|
2735 mr(result_reg, cnt_diff); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2736 nop(); // alignment |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2737 //32: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2738 // Otherwise, return the difference between the first mismatched chars. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2739 bind(Ldone); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2740 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2741 |
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 // Compare char[] arrays. |
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 // str1_reg USE only |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2746 // str2_reg USE only |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2747 // cnt_reg USE_DEF, due to tmp reg shortage |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2748 // result_reg DEF only, might compromise USE only registers |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2749 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
|
2750 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
|
2751 Register tmp5_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2752 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2753 // 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
|
2754 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
|
2755 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
|
2756 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2757 // Offset 0 should be 32 byte aligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2758 Label Linit_cbc, Lcbc, Lloop, Ldone_true, Ldone_false; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2759 Register index_reg = tmp5_reg; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2760 Register cbc_iter = tmp4_reg; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2761 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2762 //-1: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2763 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
|
2764 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
|
2765 //1: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2766 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
|
2767 li(index_reg, 0); // init |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2768 li(result_reg, 0); // assume false |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2769 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
|
2770 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2771 cmpwi(CCR1, cbc_iter, 0); // CCR1 = (cbc_iter==0) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2772 beq(CCR0, Linit_cbc); // too short |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2773 mtctr(tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2774 //8: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2775 bind(Lloop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2776 ldx(tmp1_reg, str1_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2777 ldx(tmp2_reg, str2_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2778 cmpd(CCR0, tmp1_reg, tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2779 bne(CCR0, Ldone_false); // Unequal char pair found -> done. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2780 addi(index_reg, index_reg, 4*sizeof(jchar)); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2781 bdnz(Lloop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2782 //14: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2783 bind(Linit_cbc); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2784 beq(CCR1, Ldone_true); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2785 mtctr(cbc_iter); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2786 //16: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2787 bind(Lcbc); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2788 lhzx(tmp1_reg, str1_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2789 lhzx(tmp2_reg, str2_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2790 cmpw(CCR0, tmp1_reg, tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2791 bne(CCR0, Ldone_false); // Unequal char pair found -> done. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2792 addi(index_reg, index_reg, 1*sizeof(jchar)); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2793 bdnz(Lcbc); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2794 nop(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2795 bind(Ldone_true); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2796 li(result_reg, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2797 //24: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2798 bind(Ldone_false); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2799 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2800 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2801 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2802 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
|
2803 Register tmp1_reg, Register tmp2_reg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2804 // 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
|
2805 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
|
2806 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
|
2807 assert(sizeof(jchar) == 2, "must be"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2808 assert(cntval >= 0 && ((cntval & 0x7fff) == cntval), "wrong immediate"); |
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 Label Ldone_false; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2811 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2812 if (cntval < 16) { // short case |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2813 if (cntval != 0) li(result_reg, 0); // assume false |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2814 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2815 const int num_bytes = cntval*sizeof(jchar); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2816 int index = 0; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2817 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
|
2818 ld(tmp1_reg, index, str1_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2819 ld(tmp2_reg, index, str2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2820 cmpd(CCR0, tmp1_reg, tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2821 bne(CCR0, Ldone_false); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2822 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2823 if (cntval & 2) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2824 lwz(tmp1_reg, index, str1_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2825 lwz(tmp2_reg, index, str2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2826 cmpw(CCR0, tmp1_reg, tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2827 bne(CCR0, Ldone_false); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2828 index += 4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2829 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2830 if (cntval & 1) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2831 lhz(tmp1_reg, index, str1_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2832 lhz(tmp2_reg, index, str2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2833 cmpw(CCR0, tmp1_reg, tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2834 bne(CCR0, Ldone_false); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2835 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2836 // fallthrough: true |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2837 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2838 Label Lloop; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2839 Register index_reg = tmp1_reg; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2840 const int loopcnt = cntval/4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2841 assert(loopcnt > 0, "must be"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2842 // Offset 0 should be 32 byte aligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2843 //2: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2844 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
|
2845 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
|
2846 li(tmp2_reg, loopcnt); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2847 li(index_reg, 0); // init |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2848 li(result_reg, 0); // assume false |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2849 mtctr(tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2850 //8: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2851 bind(Lloop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2852 ldx(R0, str1_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2853 ldx(tmp2_reg, str2_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2854 cmpd(CCR0, R0, tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2855 bne(CCR0, Ldone_false); // Unequal char pair found -> done. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2856 addi(index_reg, index_reg, 4*sizeof(jchar)); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2857 bdnz(Lloop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2858 //14: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2859 if (cntval & 2) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2860 lwzx(R0, str1_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2861 lwzx(tmp2_reg, str2_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2862 cmpw(CCR0, R0, tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2863 bne(CCR0, Ldone_false); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2864 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
|
2865 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2866 if (cntval & 1) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2867 lhzx(R0, str1_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2868 lhzx(tmp2_reg, str2_reg, index_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2869 cmpw(CCR0, R0, tmp2_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2870 bne(CCR0, Ldone_false); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2871 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2872 // fallthru: true |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2873 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2874 li(result_reg, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2875 bind(Ldone_false); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2876 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2877 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2878 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2879 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
|
2880 #ifdef ASSERT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2881 Label ok; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2882 if (check_equal) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2883 beq(CCR0, ok); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2884 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2885 bne(CCR0, ok); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2886 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2887 stop(msg, id); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2888 bind(ok); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2889 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2890 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2891 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2892 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
|
2893 Register mem_base, const char* msg, int id) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2894 #ifdef ASSERT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2895 switch (size) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2896 case 4: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2897 lwz(R0, mem_offset, mem_base); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2898 cmpwi(CCR0, R0, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2899 break; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2900 case 8: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2901 ld(R0, mem_offset, mem_base); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2902 cmpdi(CCR0, R0, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2903 break; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2904 default: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2905 ShouldNotReachHere(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2906 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2907 asm_assert(check_equal, msg, id); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2908 #endif // ASSERT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2909 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2910 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2911 void MacroAssembler::verify_thread() { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2912 if (VerifyThread) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2913 unimplemented("'VerifyThread' currently not implemented on PPC"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2914 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2915 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2916 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2917 // READ: oop. KILL: R0. Volatile floats perhaps. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2918 void MacroAssembler::verify_oop(Register oop, const char* msg) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2919 if (!VerifyOops) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2920 return; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2921 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2922 // will be preserved. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2923 Register tmp = R11; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2924 assert(oop != tmp, "precondition"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2925 unsigned int nbytes_save = 10*8; // 10 volatile gprs |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2926 address/* FunctionDescriptor** */fd = |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2927 StubRoutines::verify_oop_subroutine_entry_address(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2928 // save tmp |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2929 mr(R0, tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2930 // kill tmp |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2931 save_LR_CR(tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2932 push_frame_abi112(nbytes_save, tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2933 // restore tmp |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2934 mr(tmp, R0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2935 save_volatile_gprs(R1_SP, 112); // except R0 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2936 // load FunctionDescriptor** |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2937 load_const(tmp, fd); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2938 // load FunctionDescriptor* |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2939 ld(tmp, 0, tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2940 mr(R4_ARG2, oop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2941 load_const(R3_ARG1, (address)msg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2942 // call destination for its side effect |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2943 call_c(tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2944 restore_volatile_gprs(R1_SP, 112); // except R0 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2945 pop_frame(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2946 // save tmp |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2947 mr(R0, tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2948 // kill tmp |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2949 restore_LR_CR(tmp); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2950 // restore tmp |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2951 mr(tmp, R0); |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2954 const char* stop_types[] = { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2955 "stop", |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2956 "untested", |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2957 "unimplemented", |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2958 "shouldnotreachhere" |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2959 }; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2960 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2961 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
|
2962 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
|
2963 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
|
2964 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2965 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2966 // Call a C-function that prints output. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2967 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
|
2968 #ifndef PRODUCT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2969 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
|
2970 #else |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2971 block_comment("stop {"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2972 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2973 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2974 // setup arguments |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2975 load_const_optimized(R3_ARG1, type); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2976 load_const_optimized(R4_ARG2, (void *)msg, /*tmp=*/R0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2977 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
|
2978 illtrap(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2979 emit_int32(id); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2980 block_comment("} stop;"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2981 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2982 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2983 #ifndef PRODUCT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2984 // 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
|
2985 // Val, addr are temp registers. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2986 // If low == addr, addr is killed. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2987 // High is preserved. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2988 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
|
2989 if (!ZapMemory) return; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2990 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2991 assert_different_registers(low, val); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2992 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2993 BLOCK_COMMENT("zap memory region {"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2994 load_const_optimized(val, 0x0101010101010101); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2995 int size = before + after; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2996 if (low == high && size < 5 && size > 0) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
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2997 int offset = -before*BytesPerWord; |
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2998 for (int i = 0; i < size; ++i) { |
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2999 std(val, offset, low); |
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3000 offset += (1*BytesPerWord); |
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3001 } |
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3002 } else { |
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3003 addi(addr, low, -before*BytesPerWord); |
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3004 assert_different_registers(high, val); |
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3005 if (after) addi(high, high, after * BytesPerWord); |
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3006 Label loop; |
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3007 bind(loop); |
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3008 std(val, 0, addr); |
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3009 addi(addr, addr, 8); |
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3010 cmpd(CCR6, addr, high); |
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3011 ble(CCR6, loop); |
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3012 if (after) addi(high, high, -after * BytesPerWord); // Correct back to old value. |
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3013 } |
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3014 BLOCK_COMMENT("} zap memory region"); |
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3015 } |
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3016 |
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3017 #endif // !PRODUCT |