Mercurial > hg > graal-compiler
annotate src/cpu/ppc/vm/stubGenerator_ppc.cpp @ 22036:95c7ad0634c7
update truffle.jar
author | Andreas Woess <andreas.woess@oracle.com> |
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date | Fri, 19 Jun 2015 23:17:09 +0200 |
parents | f6bde7889409 |
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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. |
17804 | 3 * Copyright 2012, 2014 SAP AG. All rights reserved. |
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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5 * |
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6 * This code is free software; you can redistribute it and/or modify it |
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7 * under the terms of the GNU General Public License version 2 only, as |
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8 * published by the Free Software Foundation. |
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9 * |
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10 * This code is distributed in the hope that it will be useful, but WITHOUT |
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 * version 2 for more details (a copy is included in the LICENSE file that |
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14 * accompanied this code). |
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15 * |
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16 * You should have received a copy of the GNU General Public License version |
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17 * 2 along with this work; if not, write to the Free Software Foundation, |
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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19 * |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
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23 * |
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24 */ |
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25 |
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26 #include "precompiled.hpp" |
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27 #include "asm/macroAssembler.inline.hpp" |
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28 #include "interpreter/interpreter.hpp" |
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29 #include "nativeInst_ppc.hpp" |
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30 #include "oops/instanceOop.hpp" |
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31 #include "oops/method.hpp" |
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32 #include "oops/objArrayKlass.hpp" |
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33 #include "oops/oop.inline.hpp" |
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34 #include "prims/methodHandles.hpp" |
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35 #include "runtime/frame.inline.hpp" |
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36 #include "runtime/handles.inline.hpp" |
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37 #include "runtime/sharedRuntime.hpp" |
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38 #include "runtime/stubCodeGenerator.hpp" |
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39 #include "runtime/stubRoutines.hpp" |
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40 #include "utilities/top.hpp" |
17804 | 41 #include "runtime/thread.inline.hpp" |
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42 |
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43 #define __ _masm-> |
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44 |
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45 #ifdef PRODUCT |
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46 #define BLOCK_COMMENT(str) // nothing |
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47 #else |
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48 #define BLOCK_COMMENT(str) __ block_comment(str) |
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49 #endif |
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50 |
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51 class StubGenerator: public StubCodeGenerator { |
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52 private: |
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53 |
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54 // Call stubs are used to call Java from C |
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55 // |
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56 // Arguments: |
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57 // |
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58 // R3 - call wrapper address : address |
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59 // R4 - result : intptr_t* |
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60 // R5 - result type : BasicType |
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61 // R6 - method : Method |
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62 // R7 - frame mgr entry point : address |
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63 // R8 - parameter block : intptr_t* |
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64 // R9 - parameter count in words : int |
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65 // R10 - thread : Thread* |
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66 // |
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67 address generate_call_stub(address& return_address) { |
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68 // Setup a new c frame, copy java arguments, call frame manager or |
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69 // native_entry, and process result. |
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70 |
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71 StubCodeMark mark(this, "StubRoutines", "call_stub"); |
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72 |
17803 | 73 address start = __ function_entry(); |
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74 |
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75 // some sanity checks |
17803 | 76 assert((sizeof(frame::abi_minframe) % 16) == 0, "unaligned"); |
77 assert((sizeof(frame::abi_reg_args) % 16) == 0, "unaligned"); | |
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78 assert((sizeof(frame::spill_nonvolatiles) % 16) == 0, "unaligned"); |
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79 assert((sizeof(frame::parent_ijava_frame_abi) % 16) == 0, "unaligned"); |
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80 assert((sizeof(frame::entry_frame_locals) % 16) == 0, "unaligned"); |
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81 |
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82 Register r_arg_call_wrapper_addr = R3; |
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83 Register r_arg_result_addr = R4; |
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84 Register r_arg_result_type = R5; |
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85 Register r_arg_method = R6; |
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86 Register r_arg_entry = R7; |
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87 Register r_arg_thread = R10; |
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88 |
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89 Register r_temp = R24; |
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90 Register r_top_of_arguments_addr = R25; |
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91 Register r_entryframe_fp = R26; |
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92 |
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93 { |
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94 // Stack on entry to call_stub: |
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95 // |
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96 // F1 [C_FRAME] |
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97 // ... |
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98 |
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99 Register r_arg_argument_addr = R8; |
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100 Register r_arg_argument_count = R9; |
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101 Register r_frame_alignment_in_bytes = R27; |
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102 Register r_argument_addr = R28; |
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103 Register r_argumentcopy_addr = R29; |
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104 Register r_argument_size_in_bytes = R30; |
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105 Register r_frame_size = R23; |
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106 |
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107 Label arguments_copied; |
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108 |
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109 // Save LR/CR to caller's C_FRAME. |
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110 __ save_LR_CR(R0); |
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111 |
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112 // Zero extend arg_argument_count. |
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113 __ clrldi(r_arg_argument_count, r_arg_argument_count, 32); |
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114 |
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115 // Save non-volatiles GPRs to ENTRY_FRAME (not yet pushed, but it's safe). |
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116 __ save_nonvolatile_gprs(R1_SP, _spill_nonvolatiles_neg(r14)); |
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117 |
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118 // Keep copy of our frame pointer (caller's SP). |
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119 __ mr(r_entryframe_fp, R1_SP); |
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120 |
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121 BLOCK_COMMENT("Push ENTRY_FRAME including arguments"); |
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122 // Push ENTRY_FRAME including arguments: |
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123 // |
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124 // F0 [TOP_IJAVA_FRAME_ABI] |
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125 // alignment (optional) |
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126 // [outgoing Java arguments] |
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127 // [ENTRY_FRAME_LOCALS] |
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128 // F1 [C_FRAME] |
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129 // ... |
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130 |
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131 // calculate frame size |
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132 |
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133 // unaligned size of arguments |
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134 __ sldi(r_argument_size_in_bytes, |
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135 r_arg_argument_count, Interpreter::logStackElementSize); |
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136 // arguments alignment (max 1 slot) |
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137 // FIXME: use round_to() here |
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138 __ andi_(r_frame_alignment_in_bytes, r_arg_argument_count, 1); |
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139 __ sldi(r_frame_alignment_in_bytes, |
14445 | 140 r_frame_alignment_in_bytes, Interpreter::logStackElementSize); |
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141 |
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142 // size = unaligned size of arguments + top abi's size |
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143 __ addi(r_frame_size, r_argument_size_in_bytes, |
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144 frame::top_ijava_frame_abi_size); |
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145 // size += arguments alignment |
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146 __ add(r_frame_size, |
14445 | 147 r_frame_size, r_frame_alignment_in_bytes); |
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148 // size += size of call_stub locals |
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149 __ addi(r_frame_size, |
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150 r_frame_size, frame::entry_frame_locals_size); |
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151 |
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152 // push ENTRY_FRAME |
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153 __ push_frame(r_frame_size, r_temp); |
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154 |
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155 // initialize call_stub locals (step 1) |
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156 __ std(r_arg_call_wrapper_addr, |
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157 _entry_frame_locals_neg(call_wrapper_address), r_entryframe_fp); |
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158 __ std(r_arg_result_addr, |
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159 _entry_frame_locals_neg(result_address), r_entryframe_fp); |
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160 __ std(r_arg_result_type, |
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161 _entry_frame_locals_neg(result_type), r_entryframe_fp); |
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162 // we will save arguments_tos_address later |
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163 |
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164 |
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165 BLOCK_COMMENT("Copy Java arguments"); |
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166 // copy Java arguments |
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167 |
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168 // Calculate top_of_arguments_addr which will be R17_tos (not prepushed) later. |
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169 // FIXME: why not simply use SP+frame::top_ijava_frame_size? |
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170 __ addi(r_top_of_arguments_addr, |
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171 R1_SP, frame::top_ijava_frame_abi_size); |
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172 __ add(r_top_of_arguments_addr, |
14445 | 173 r_top_of_arguments_addr, r_frame_alignment_in_bytes); |
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174 |
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175 // any arguments to copy? |
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176 __ cmpdi(CCR0, r_arg_argument_count, 0); |
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177 __ beq(CCR0, arguments_copied); |
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178 |
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179 // prepare loop and copy arguments in reverse order |
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180 { |
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181 // init CTR with arg_argument_count |
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182 __ mtctr(r_arg_argument_count); |
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183 |
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184 // let r_argumentcopy_addr point to last outgoing Java arguments P |
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185 __ mr(r_argumentcopy_addr, r_top_of_arguments_addr); |
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186 |
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187 // let r_argument_addr point to last incoming java argument |
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188 __ add(r_argument_addr, |
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189 r_arg_argument_addr, r_argument_size_in_bytes); |
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190 __ addi(r_argument_addr, r_argument_addr, -BytesPerWord); |
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191 |
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192 // now loop while CTR > 0 and copy arguments |
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193 { |
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194 Label next_argument; |
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195 __ bind(next_argument); |
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196 |
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197 __ ld(r_temp, 0, r_argument_addr); |
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198 // argument_addr--; |
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199 __ addi(r_argument_addr, r_argument_addr, -BytesPerWord); |
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200 __ std(r_temp, 0, r_argumentcopy_addr); |
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201 // argumentcopy_addr++; |
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202 __ addi(r_argumentcopy_addr, r_argumentcopy_addr, BytesPerWord); |
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203 |
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204 __ bdnz(next_argument); |
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205 } |
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206 } |
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207 |
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208 // Arguments copied, continue. |
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209 __ bind(arguments_copied); |
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210 } |
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211 |
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212 { |
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213 BLOCK_COMMENT("Call frame manager or native entry."); |
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214 // Call frame manager or native entry. |
20508 | 215 Register r_new_arg_entry = R14; |
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216 assert_different_registers(r_new_arg_entry, r_top_of_arguments_addr, |
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217 r_arg_method, r_arg_thread); |
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218 |
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219 __ mr(r_new_arg_entry, r_arg_entry); |
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220 |
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221 // Register state on entry to frame manager / native entry: |
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222 // |
14445 | 223 // tos - intptr_t* sender tos (prepushed) Lesp = (SP) + copied_arguments_offset - 8 |
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224 // R19_method - Method |
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225 // R16_thread - JavaThread* |
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226 |
14445 | 227 // Tos must point to last argument - element_size. |
17804 | 228 #ifdef CC_INTERP |
14445 | 229 const Register tos = R17_tos; |
17804 | 230 #else |
231 const Register tos = R15_esp; | |
232 #endif | |
14445 | 233 __ addi(tos, r_top_of_arguments_addr, -Interpreter::stackElementSize); |
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234 |
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235 // initialize call_stub locals (step 2) |
14445 | 236 // now save tos as arguments_tos_address |
237 __ std(tos, _entry_frame_locals_neg(arguments_tos_address), r_entryframe_fp); | |
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238 |
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239 // load argument registers for call |
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240 __ mr(R19_method, r_arg_method); |
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241 __ mr(R16_thread, r_arg_thread); |
14445 | 242 assert(tos != r_arg_method, "trashed r_arg_method"); |
243 assert(tos != r_arg_thread && R19_method != r_arg_thread, "trashed r_arg_thread"); | |
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244 |
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245 // Set R15_prev_state to 0 for simplifying checks in callee. |
17804 | 246 #ifdef CC_INTERP |
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247 __ li(R15_prev_state, 0); |
17804 | 248 #else |
249 __ load_const_optimized(R25_templateTableBase, (address)Interpreter::dispatch_table((TosState)0), R11_scratch1); | |
250 #endif | |
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251 // Stack on entry to frame manager / native entry: |
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252 // |
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253 // F0 [TOP_IJAVA_FRAME_ABI] |
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254 // alignment (optional) |
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255 // [outgoing Java arguments] |
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256 // [ENTRY_FRAME_LOCALS] |
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257 // F1 [C_FRAME] |
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258 // ... |
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259 // |
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260 |
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261 // global toc register |
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262 __ load_const(R29, MacroAssembler::global_toc(), R11_scratch1); |
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263 |
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264 // Load narrow oop base. |
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265 __ reinit_heapbase(R30, R11_scratch1); |
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266 |
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267 // Remember the senderSP so we interpreter can pop c2i arguments off of the stack |
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268 // when called via a c2i. |
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269 |
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270 // Pass initial_caller_sp to framemanager. |
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271 __ mr(R21_tmp1, R1_SP); |
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272 |
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273 // Do a light-weight C-call here, r_new_arg_entry holds the address |
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274 // of the interpreter entry point (frame manager or native entry) |
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275 // and save runtime-value of LR in return_address. |
14445 | 276 assert(r_new_arg_entry != tos && r_new_arg_entry != R19_method && r_new_arg_entry != R16_thread, |
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277 "trashed r_new_arg_entry"); |
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278 return_address = __ call_stub(r_new_arg_entry); |
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279 } |
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280 |
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281 { |
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282 BLOCK_COMMENT("Returned from frame manager or native entry."); |
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283 // Returned from frame manager or native entry. |
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284 // Now pop frame, process result, and return to caller. |
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285 |
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286 // Stack on exit from frame manager / native entry: |
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287 // |
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288 // F0 [ABI] |
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289 // ... |
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290 // [ENTRY_FRAME_LOCALS] |
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291 // F1 [C_FRAME] |
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292 // ... |
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293 // |
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294 // Just pop the topmost frame ... |
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295 // |
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296 |
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297 Label ret_is_object; |
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298 Label ret_is_long; |
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299 Label ret_is_float; |
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300 Label ret_is_double; |
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301 |
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302 Register r_entryframe_fp = R30; |
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303 Register r_lr = R7_ARG5; |
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304 Register r_cr = R8_ARG6; |
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305 |
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306 // Reload some volatile registers which we've spilled before the call |
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307 // to frame manager / native entry. |
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308 // Access all locals via frame pointer, because we know nothing about |
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309 // the topmost frame's size. |
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310 __ ld(r_entryframe_fp, _abi(callers_sp), R1_SP); |
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311 assert_different_registers(r_entryframe_fp, R3_RET, r_arg_result_addr, r_arg_result_type, r_cr, r_lr); |
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312 __ ld(r_arg_result_addr, |
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313 _entry_frame_locals_neg(result_address), r_entryframe_fp); |
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314 __ ld(r_arg_result_type, |
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315 _entry_frame_locals_neg(result_type), r_entryframe_fp); |
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316 __ ld(r_cr, _abi(cr), r_entryframe_fp); |
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317 __ ld(r_lr, _abi(lr), r_entryframe_fp); |
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318 |
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319 // pop frame and restore non-volatiles, LR and CR |
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320 __ mr(R1_SP, r_entryframe_fp); |
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321 __ mtcr(r_cr); |
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322 __ mtlr(r_lr); |
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323 |
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324 // Store result depending on type. Everything that is not |
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325 // T_OBJECT, T_LONG, T_FLOAT, or T_DOUBLE is treated as T_INT. |
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326 __ cmpwi(CCR0, r_arg_result_type, T_OBJECT); |
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327 __ cmpwi(CCR1, r_arg_result_type, T_LONG); |
14445 | 328 __ cmpwi(CCR5, r_arg_result_type, T_FLOAT); |
329 __ cmpwi(CCR6, r_arg_result_type, T_DOUBLE); | |
14408
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330 |
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331 // restore non-volatile registers |
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332 __ restore_nonvolatile_gprs(R1_SP, _spill_nonvolatiles_neg(r14)); |
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333 |
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334 |
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335 // Stack on exit from call_stub: |
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336 // |
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337 // 0 [C_FRAME] |
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338 // ... |
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339 // |
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340 // no call_stub frames left. |
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341 |
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342 // All non-volatiles have been restored at this point!! |
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343 assert(R3_RET == R3, "R3_RET should be R3"); |
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344 |
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345 __ beq(CCR0, ret_is_object); |
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346 __ beq(CCR1, ret_is_long); |
14445 | 347 __ beq(CCR5, ret_is_float); |
348 __ beq(CCR6, ret_is_double); | |
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349 |
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350 // default: |
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351 __ stw(R3_RET, 0, r_arg_result_addr); |
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352 __ blr(); // return to caller |
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353 |
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354 // case T_OBJECT: |
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355 __ bind(ret_is_object); |
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356 __ std(R3_RET, 0, r_arg_result_addr); |
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357 __ blr(); // return to caller |
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358 |
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359 // case T_LONG: |
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360 __ bind(ret_is_long); |
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361 __ std(R3_RET, 0, r_arg_result_addr); |
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362 __ blr(); // return to caller |
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363 |
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364 // case T_FLOAT: |
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365 __ bind(ret_is_float); |
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366 __ stfs(F1_RET, 0, r_arg_result_addr); |
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367 __ blr(); // return to caller |
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368 |
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369 // case T_DOUBLE: |
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370 __ bind(ret_is_double); |
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371 __ stfd(F1_RET, 0, r_arg_result_addr); |
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372 __ blr(); // return to caller |
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373 } |
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374 |
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375 return start; |
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376 } |
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377 |
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378 // Return point for a Java call if there's an exception thrown in |
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379 // Java code. The exception is caught and transformed into a |
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380 // pending exception stored in JavaThread that can be tested from |
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381 // within the VM. |
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382 // |
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383 address generate_catch_exception() { |
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384 StubCodeMark mark(this, "StubRoutines", "catch_exception"); |
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385 |
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386 address start = __ pc(); |
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387 |
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388 // Registers alive |
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389 // |
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390 // R16_thread |
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391 // R3_ARG1 - address of pending exception |
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392 // R4_ARG2 - return address in call stub |
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393 |
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394 const Register exception_file = R21_tmp1; |
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395 const Register exception_line = R22_tmp2; |
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396 |
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397 __ load_const(exception_file, (void*)__FILE__); |
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398 __ load_const(exception_line, (void*)__LINE__); |
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399 |
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400 __ std(R3_ARG1, thread_(pending_exception)); |
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401 // store into `char *' |
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402 __ std(exception_file, thread_(exception_file)); |
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403 // store into `int' |
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404 __ stw(exception_line, thread_(exception_line)); |
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|
405 |
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406 // complete return to VM |
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407 assert(StubRoutines::_call_stub_return_address != NULL, "must have been generated before"); |
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408 |
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409 __ mtlr(R4_ARG2); |
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410 // continue in call stub |
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411 __ blr(); |
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|
412 |
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413 return start; |
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414 } |
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|
415 |
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416 // Continuation point for runtime calls returning with a pending |
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417 // exception. The pending exception check happened in the runtime |
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418 // or native call stub. The pending exception in Thread is |
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419 // converted into a Java-level exception. |
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420 // |
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421 address generate_forward_exception() { |
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422 StubCodeMark mark(this, "StubRoutines", "forward_exception"); |
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423 address start = __ pc(); |
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424 |
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425 #if !defined(PRODUCT) |
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|
426 if (VerifyOops) { |
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427 // Get pending exception oop. |
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428 __ ld(R3_ARG1, |
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429 in_bytes(Thread::pending_exception_offset()), |
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430 R16_thread); |
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|
431 // Make sure that this code is only executed if there is a pending exception. |
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432 { |
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433 Label L; |
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434 __ cmpdi(CCR0, R3_ARG1, 0); |
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435 __ bne(CCR0, L); |
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|
436 __ stop("StubRoutines::forward exception: no pending exception (1)"); |
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437 __ bind(L); |
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|
438 } |
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439 __ verify_oop(R3_ARG1, "StubRoutines::forward exception: not an oop"); |
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440 } |
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441 #endif |
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|
442 |
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443 // Save LR/CR and copy exception pc (LR) into R4_ARG2. |
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444 __ save_LR_CR(R4_ARG2); |
17803 | 445 __ push_frame_reg_args(0, R0); |
14408
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446 // Find exception handler. |
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447 __ call_VM_leaf(CAST_FROM_FN_PTR(address, |
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448 SharedRuntime::exception_handler_for_return_address), |
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449 R16_thread, |
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450 R4_ARG2); |
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|
451 // Copy handler's address. |
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452 __ mtctr(R3_RET); |
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453 __ pop_frame(); |
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|
454 __ restore_LR_CR(R0); |
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|
455 |
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456 // Set up the arguments for the exception handler: |
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|
457 // - R3_ARG1: exception oop |
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458 // - R4_ARG2: exception pc. |
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|
459 |
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|
460 // Load pending exception oop. |
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461 __ ld(R3_ARG1, |
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|
462 in_bytes(Thread::pending_exception_offset()), |
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|
463 R16_thread); |
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|
464 |
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465 // The exception pc is the return address in the caller. |
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466 // Must load it into R4_ARG2. |
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|
467 __ mflr(R4_ARG2); |
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|
468 |
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|
469 #ifdef ASSERT |
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|
470 // Make sure exception is set. |
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|
471 { |
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|
472 Label L; |
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|
473 __ cmpdi(CCR0, R3_ARG1, 0); |
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474 __ bne(CCR0, L); |
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|
475 __ stop("StubRoutines::forward exception: no pending exception (2)"); |
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|
476 __ bind(L); |
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|
477 } |
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|
478 #endif |
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|
479 |
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|
480 // Clear the pending exception. |
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|
481 __ li(R0, 0); |
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|
482 __ std(R0, |
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|
483 in_bytes(Thread::pending_exception_offset()), |
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|
484 R16_thread); |
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|
485 // Jump to exception handler. |
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|
486 __ bctr(); |
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|
487 |
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|
488 return start; |
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|
489 } |
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|
490 |
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|
491 #undef __ |
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|
492 #define __ masm-> |
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|
493 // Continuation point for throwing of implicit exceptions that are |
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|
494 // not handled in the current activation. Fabricates an exception |
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parents:
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|
495 // oop and initiates normal exception dispatching in this |
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|
496 // frame. Only callee-saved registers are preserved (through the |
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|
497 // normal register window / RegisterMap handling). If the compiler |
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|
498 // needs all registers to be preserved between the fault point and |
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parents:
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|
499 // the exception handler then it must assume responsibility for that |
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|
500 // in AbstractCompiler::continuation_for_implicit_null_exception or |
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|
501 // continuation_for_implicit_division_by_zero_exception. All other |
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|
502 // implicit exceptions (e.g., NullPointerException or |
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parents:
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|
503 // AbstractMethodError on entry) are either at call sites or |
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|
504 // otherwise assume that stack unwinding will be initiated, so |
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parents:
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|
505 // caller saved registers were assumed volatile in the compiler. |
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|
506 // |
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|
507 // Note that we generate only this stub into a RuntimeStub, because |
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|
508 // it needs to be properly traversed and ignored during GC, so we |
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|
509 // change the meaning of the "__" macro within this method. |
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|
510 // |
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|
511 // Note: the routine set_pc_not_at_call_for_caller in |
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|
512 // SharedRuntime.cpp requires that this code be generated into a |
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|
513 // RuntimeStub. |
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|
514 address generate_throw_exception(const char* name, address runtime_entry, bool restore_saved_exception_pc, |
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|
515 Register arg1 = noreg, Register arg2 = noreg) { |
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|
516 CodeBuffer code(name, 1024 DEBUG_ONLY(+ 512), 0); |
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|
517 MacroAssembler* masm = new MacroAssembler(&code); |
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|
518 |
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|
519 OopMapSet* oop_maps = new OopMapSet(); |
17803 | 520 int frame_size_in_bytes = frame::abi_reg_args_size; |
14408
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|
521 OopMap* map = new OopMap(frame_size_in_bytes / sizeof(jint), 0); |
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parents:
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|
522 |
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|
523 StubCodeMark mark(this, "StubRoutines", "throw_exception"); |
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|
524 |
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|
525 address start = __ pc(); |
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parents:
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|
526 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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|
527 __ save_LR_CR(R11_scratch1); |
ec28f9c041ff
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|
528 |
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|
529 // Push a frame. |
17803 | 530 __ push_frame_reg_args(0, R11_scratch1); |
14408
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parents:
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|
531 |
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parents:
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|
532 address frame_complete_pc = __ pc(); |
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parents:
diff
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|
533 |
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|
534 if (restore_saved_exception_pc) { |
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parents:
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|
535 __ unimplemented("StubGenerator::throw_exception with restore_saved_exception_pc", 74); |
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parents:
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|
536 } |
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parents:
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changeset
|
537 |
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parents:
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|
538 // Note that we always have a runtime stub frame on the top of |
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parents:
diff
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|
539 // stack by this point. Remember the offset of the instruction |
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parents:
diff
changeset
|
540 // whose address will be moved to R11_scratch1. |
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parents:
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|
541 address gc_map_pc = __ get_PC_trash_LR(R11_scratch1); |
ec28f9c041ff
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parents:
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|
542 |
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parents:
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|
543 __ set_last_Java_frame(/*sp*/R1_SP, /*pc*/R11_scratch1); |
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parents:
diff
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|
544 |
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parents:
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|
545 __ mr(R3_ARG1, R16_thread); |
ec28f9c041ff
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parents:
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|
546 if (arg1 != noreg) { |
ec28f9c041ff
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parents:
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|
547 __ mr(R4_ARG2, arg1); |
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parents:
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changeset
|
548 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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|
549 if (arg2 != noreg) { |
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parents:
diff
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|
550 __ mr(R5_ARG3, arg2); |
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parents:
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|
551 } |
17803 | 552 #if defined(ABI_ELFv2) |
553 __ call_c(runtime_entry, relocInfo::none); | |
554 #else | |
555 __ call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, runtime_entry), relocInfo::none); | |
556 #endif | |
14408
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parents:
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|
557 |
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parents:
diff
changeset
|
558 // Set an oopmap for the call site. |
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diff
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|
559 oop_maps->add_gc_map((int)(gc_map_pc - start), map); |
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parents:
diff
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|
560 |
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parents:
diff
changeset
|
561 __ reset_last_Java_frame(); |
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parents:
diff
changeset
|
562 |
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parents:
diff
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|
563 #ifdef ASSERT |
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parents:
diff
changeset
|
564 // Make sure that this code is only executed if there is a pending |
ec28f9c041ff
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parents:
diff
changeset
|
565 // exception. |
ec28f9c041ff
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parents:
diff
changeset
|
566 { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
567 Label L; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
568 __ ld(R0, |
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parents:
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|
569 in_bytes(Thread::pending_exception_offset()), |
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570 R16_thread); |
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|
571 __ cmpdi(CCR0, R0, 0); |
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|
572 __ bne(CCR0, L); |
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|
573 __ stop("StubRoutines::throw_exception: no pending exception"); |
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|
574 __ bind(L); |
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|
575 } |
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576 #endif |
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577 |
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|
578 // Pop frame. |
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|
579 __ pop_frame(); |
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|
580 |
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|
581 __ restore_LR_CR(R11_scratch1); |
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diff
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|
582 |
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|
583 __ load_const(R11_scratch1, StubRoutines::forward_exception_entry()); |
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parents:
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|
584 __ mtctr(R11_scratch1); |
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|
585 __ bctr(); |
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|
586 |
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|
587 // Create runtime stub with OopMap. |
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|
588 RuntimeStub* stub = |
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589 RuntimeStub::new_runtime_stub(name, &code, |
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590 /*frame_complete=*/ (int)(frame_complete_pc - start), |
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591 frame_size_in_bytes/wordSize, |
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|
592 oop_maps, |
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593 false); |
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594 return stub->entry_point(); |
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|
595 } |
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parents:
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|
596 #undef __ |
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parents:
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|
597 #define __ _masm-> |
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|
598 |
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|
599 // Generate G1 pre-write barrier for array. |
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|
600 // |
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|
601 // Input: |
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|
602 // from - register containing src address (only needed for spilling) |
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|
603 // to - register containing starting address |
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|
604 // count - register containing element count |
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|
605 // tmp - scratch register |
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|
606 // |
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|
607 // Kills: |
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|
608 // nothing |
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|
609 // |
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610 void gen_write_ref_array_pre_barrier(Register from, Register to, Register count, bool dest_uninitialized, Register Rtmp1) { |
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|
611 BarrierSet* const bs = Universe::heap()->barrier_set(); |
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|
612 switch (bs->kind()) { |
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|
613 case BarrierSet::G1SATBCT: |
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|
614 case BarrierSet::G1SATBCTLogging: |
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615 // With G1, don't generate the call if we statically know that the target in uninitialized |
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616 if (!dest_uninitialized) { |
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617 const int spill_slots = 4 * wordSize; |
17803 | 618 const int frame_size = frame::abi_reg_args_size + spill_slots; |
14445 | 619 Label filtered; |
620 | |
621 // Is marking active? | |
622 if (in_bytes(PtrQueue::byte_width_of_active()) == 4) { | |
623 __ lwz(Rtmp1, in_bytes(JavaThread::satb_mark_queue_offset() + PtrQueue::byte_offset_of_active()), R16_thread); | |
624 } else { | |
625 guarantee(in_bytes(PtrQueue::byte_width_of_active()) == 1, "Assumption"); | |
626 __ lbz(Rtmp1, in_bytes(JavaThread::satb_mark_queue_offset() + PtrQueue::byte_offset_of_active()), R16_thread); | |
627 } | |
628 __ cmpdi(CCR0, Rtmp1, 0); | |
629 __ beq(CCR0, filtered); | |
14408
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|
630 |
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631 __ save_LR_CR(R0); |
17803 | 632 __ push_frame_reg_args(spill_slots, R0); |
14408
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633 __ std(from, frame_size - 1 * wordSize, R1_SP); |
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634 __ std(to, frame_size - 2 * wordSize, R1_SP); |
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635 __ std(count, frame_size - 3 * wordSize, R1_SP); |
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|
636 |
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637 __ call_VM_leaf(CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_pre), to, count); |
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|
638 |
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|
639 __ ld(from, frame_size - 1 * wordSize, R1_SP); |
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640 __ ld(to, frame_size - 2 * wordSize, R1_SP); |
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641 __ ld(count, frame_size - 3 * wordSize, R1_SP); |
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642 __ pop_frame(); |
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643 __ restore_LR_CR(R0); |
14445 | 644 |
645 __ bind(filtered); | |
14408
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|
646 } |
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|
647 break; |
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648 case BarrierSet::CardTableModRef: |
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|
649 case BarrierSet::CardTableExtension: |
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650 case BarrierSet::ModRef: |
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651 break; |
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|
652 default: |
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|
653 ShouldNotReachHere(); |
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parents:
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|
654 } |
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|
655 } |
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|
656 |
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|
657 // Generate CMS/G1 post-write barrier for array. |
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parents:
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|
658 // |
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|
659 // Input: |
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|
660 // addr - register containing starting address |
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|
661 // count - register containing element count |
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|
662 // tmp - scratch register |
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|
663 // |
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|
664 // The input registers and R0 are overwritten. |
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|
665 // |
14445 | 666 void gen_write_ref_array_post_barrier(Register addr, Register count, Register tmp, bool branchToEnd) { |
14408
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667 BarrierSet* const bs = Universe::heap()->barrier_set(); |
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|
668 |
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|
669 switch (bs->kind()) { |
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670 case BarrierSet::G1SATBCT: |
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|
671 case BarrierSet::G1SATBCTLogging: |
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672 { |
14445 | 673 if (branchToEnd) { |
674 __ save_LR_CR(R0); | |
675 // We need this frame only to spill LR. | |
17803 | 676 __ push_frame_reg_args(0, R0); |
14445 | 677 __ call_VM_leaf(CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_post), addr, count); |
678 __ pop_frame(); | |
679 __ restore_LR_CR(R0); | |
680 } else { | |
681 // Tail call: fake call from stub caller by branching without linking. | |
682 address entry_point = (address)CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_post); | |
683 __ mr_if_needed(R3_ARG1, addr); | |
684 __ mr_if_needed(R4_ARG2, count); | |
685 __ load_const(R11, entry_point, R0); | |
686 __ call_c_and_return_to_caller(R11); | |
687 } | |
14408
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|
688 } |
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|
689 break; |
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|
690 case BarrierSet::CardTableModRef: |
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|
691 case BarrierSet::CardTableExtension: |
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|
692 { |
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|
693 Label Lskip_loop, Lstore_loop; |
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|
694 if (UseConcMarkSweepGC) { |
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|
695 // TODO PPC port: contribute optimization / requires shared changes |
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|
696 __ release(); |
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|
697 } |
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|
698 |
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|
699 CardTableModRefBS* const ct = (CardTableModRefBS*)bs; |
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700 assert(sizeof(*ct->byte_map_base) == sizeof(jbyte), "adjust this code"); |
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|
701 assert_different_registers(addr, count, tmp); |
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changeset
|
702 |
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changeset
|
703 __ sldi(count, count, LogBytesPerHeapOop); |
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changeset
|
704 __ addi(count, count, -BytesPerHeapOop); |
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|
705 __ add(count, addr, count); |
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parents:
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|
706 // Use two shifts to clear out those low order two bits! (Cannot opt. into 1.) |
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707 __ srdi(addr, addr, CardTableModRefBS::card_shift); |
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|
708 __ srdi(count, count, CardTableModRefBS::card_shift); |
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parents:
diff
changeset
|
709 __ subf(count, addr, count); |
ec28f9c041ff
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|
710 assert_different_registers(R0, addr, count, tmp); |
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|
711 __ load_const(tmp, (address)ct->byte_map_base); |
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parents:
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changeset
|
712 __ addic_(count, count, 1); |
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diff
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|
713 __ beq(CCR0, Lskip_loop); |
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parents:
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changeset
|
714 __ li(R0, 0); |
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parents:
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changeset
|
715 __ mtctr(count); |
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changeset
|
716 // Byte store loop |
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|
717 __ bind(Lstore_loop); |
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|
718 __ stbx(R0, tmp, addr); |
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diff
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|
719 __ addi(addr, addr, 1); |
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|
720 __ bdnz(Lstore_loop); |
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|
721 __ bind(Lskip_loop); |
14445 | 722 |
723 if (!branchToEnd) __ blr(); | |
14408
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|
724 } |
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|
725 break; |
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|
726 case BarrierSet::ModRef: |
14445 | 727 if (!branchToEnd) __ blr(); |
14408
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goetz
parents:
diff
changeset
|
728 break; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
729 default: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
730 ShouldNotReachHere(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
731 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
732 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
733 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
734 // Support for void zero_words_aligned8(HeapWord* to, size_t count) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
735 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
736 // Arguments: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
737 // to: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
738 // count: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
739 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
740 // Destroys: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
741 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
742 address generate_zero_words_aligned8() { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
743 StubCodeMark mark(this, "StubRoutines", "zero_words_aligned8"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
744 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
745 // Implemented as in ClearArray. |
17803 | 746 address start = __ function_entry(); |
14408
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 Register base_ptr_reg = R3_ARG1; // tohw (needs to be 8b aligned) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
749 Register cnt_dwords_reg = R4_ARG2; // count (in dwords) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
750 Register tmp1_reg = R5_ARG3; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
751 Register tmp2_reg = R6_ARG4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
752 Register zero_reg = R7_ARG5; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
753 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
754 // Procedure for large arrays (uses data cache block zero instruction). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
755 Label dwloop, fast, fastloop, restloop, lastdword, done; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
756 int cl_size=VM_Version::get_cache_line_size(), cl_dwords=cl_size>>3, cl_dwordaddr_bits=exact_log2(cl_dwords); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
757 int min_dcbz=2; // Needs to be positive, apply dcbz only to at least min_dcbz cache lines. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
758 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
759 // Clear up to 128byte boundary if long enough, dword_cnt=(16-(base>>3))%16. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
760 __ dcbtst(base_ptr_reg); // Indicate write access to first cache line ... |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
761 __ andi(tmp2_reg, cnt_dwords_reg, 1); // to check if number of dwords is even. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
762 __ srdi_(tmp1_reg, cnt_dwords_reg, 1); // number of double dwords |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
763 __ load_const_optimized(zero_reg, 0L); // Use as zero register. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
764 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
765 __ cmpdi(CCR1, tmp2_reg, 0); // cnt_dwords even? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
766 __ beq(CCR0, lastdword); // size <= 1 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
767 __ mtctr(tmp1_reg); // Speculatively preload counter for rest loop (>0). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
768 __ cmpdi(CCR0, cnt_dwords_reg, (min_dcbz+1)*cl_dwords-1); // Big enough to ensure >=min_dcbz cache lines are included? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
769 __ neg(tmp1_reg, base_ptr_reg); // bit 0..58: bogus, bit 57..60: (16-(base>>3))%16, bit 61..63: 000 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
770 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
771 __ blt(CCR0, restloop); // Too small. (<31=(2*cl_dwords)-1 is sufficient, but bigger performs better.) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
772 __ rldicl_(tmp1_reg, tmp1_reg, 64-3, 64-cl_dwordaddr_bits); // Extract number of dwords to 128byte boundary=(16-(base>>3))%16. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
773 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
774 __ beq(CCR0, fast); // already 128byte aligned |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
775 __ mtctr(tmp1_reg); // Set ctr to hit 128byte boundary (0<ctr<cnt). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
776 __ subf(cnt_dwords_reg, tmp1_reg, cnt_dwords_reg); // rest (>0 since size>=256-8) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
777 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
778 // Clear in first cache line dword-by-dword if not already 128byte aligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
779 __ bind(dwloop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
780 __ std(zero_reg, 0, base_ptr_reg); // Clear 8byte aligned block. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
781 __ addi(base_ptr_reg, base_ptr_reg, 8); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
782 __ bdnz(dwloop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
783 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
784 // clear 128byte blocks |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
785 __ bind(fast); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
786 __ srdi(tmp1_reg, cnt_dwords_reg, cl_dwordaddr_bits); // loop count for 128byte loop (>0 since size>=256-8) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
787 __ andi(tmp2_reg, cnt_dwords_reg, 1); // to check if rest even |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
788 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
789 __ mtctr(tmp1_reg); // load counter |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
790 __ cmpdi(CCR1, tmp2_reg, 0); // rest even? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
791 __ rldicl_(tmp1_reg, cnt_dwords_reg, 63, 65-cl_dwordaddr_bits); // rest in double dwords |
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 __ bind(fastloop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
794 __ dcbz(base_ptr_reg); // Clear 128byte aligned block. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
795 __ addi(base_ptr_reg, base_ptr_reg, cl_size); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
796 __ bdnz(fastloop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
797 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
798 //__ dcbtst(base_ptr_reg); // Indicate write access to last cache line. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
799 __ beq(CCR0, lastdword); // rest<=1 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
800 __ mtctr(tmp1_reg); // load counter |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
801 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
802 // Clear rest. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
803 __ bind(restloop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
804 __ std(zero_reg, 0, base_ptr_reg); // Clear 8byte aligned block. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
805 __ std(zero_reg, 8, base_ptr_reg); // Clear 8byte aligned block. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
806 __ addi(base_ptr_reg, base_ptr_reg, 16); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
807 __ bdnz(restloop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
808 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
809 __ bind(lastdword); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
810 __ beq(CCR1, done); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
811 __ std(zero_reg, 0, base_ptr_reg); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
812 __ bind(done); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
813 __ blr(); // return |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
814 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
815 return start; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
816 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
817 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
818 // The following routine generates a subroutine to throw an asynchronous |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
819 // UnknownError when an unsafe access gets a fault that could not be |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
820 // reasonably prevented by the programmer. (Example: SIGBUS/OBJERR.) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
821 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
822 address generate_handler_for_unsafe_access() { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
823 StubCodeMark mark(this, "StubRoutines", "handler_for_unsafe_access"); |
17803 | 824 address start = __ function_entry(); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
825 __ unimplemented("StubRoutines::handler_for_unsafe_access", 93); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
826 return start; |
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 #if !defined(PRODUCT) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
830 // Wrapper which calls oopDesc::is_oop_or_null() |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
831 // Only called by MacroAssembler::verify_oop |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
832 static void verify_oop_helper(const char* message, oop o) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
833 if (!o->is_oop_or_null()) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
834 fatal(message); |
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 ++ StubRoutines::_verify_oop_count; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
837 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
838 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
839 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
840 // Return address of code to be called from code generated by |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
841 // MacroAssembler::verify_oop. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
842 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
843 // Don't generate, rather use C++ code. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
844 address generate_verify_oop() { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
845 StubCodeMark mark(this, "StubRoutines", "verify_oop"); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
846 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
847 // this is actually a `FunctionDescriptor*'. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
848 address start = 0; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
849 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
850 #if !defined(PRODUCT) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
851 start = CAST_FROM_FN_PTR(address, verify_oop_helper); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
852 #endif |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
853 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
854 return start; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
855 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
856 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
857 // Fairer handling of safepoints for native methods. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
858 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
859 // Generate code which reads from the polling page. This special handling is needed as the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
860 // linux-ppc64 kernel before 2.6.6 doesn't set si_addr on some segfaults in 64bit mode |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
861 // (cf. http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.6), especially when we try |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
862 // to read from the safepoint polling page. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
863 address generate_load_from_poll() { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
864 StubCodeMark mark(this, "StubRoutines", "generate_load_from_poll"); |
17803 | 865 address start = __ function_entry(); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
866 __ unimplemented("StubRoutines::verify_oop", 95); // TODO PPC port |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
867 return start; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
868 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
869 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
870 // -XX:+OptimizeFill : convert fill/copy loops into intrinsic |
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 // The code is implemented(ported from sparc) as we believe it benefits JVM98, however |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
873 // tracing(-XX:+TraceOptimizeFill) shows the intrinsic replacement doesn't happen at all! |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
874 // |
14445 | 875 // Source code in function is_range_check_if() shows that OptimizeFill relaxed the condition |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
876 // for turning on loop predication optimization, and hence the behavior of "array range check" |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
877 // and "loop invariant check" could be influenced, which potentially boosted JVM98. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
878 // |
14445 | 879 // Generate stub for disjoint short fill. If "aligned" is true, the |
880 // "to" address is assumed to be heapword aligned. | |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
881 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
882 // Arguments for generated stub: |
14445 | 883 // to: R3_ARG1 |
884 // value: R4_ARG2 | |
885 // count: R5_ARG3 treated as signed | |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
886 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
887 address generate_fill(BasicType t, bool aligned, const char* name) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
888 StubCodeMark mark(this, "StubRoutines", name); |
17803 | 889 address start = __ function_entry(); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
890 |
14445 | 891 const Register to = R3_ARG1; // source array address |
892 const Register value = R4_ARG2; // fill value | |
893 const Register count = R5_ARG3; // elements count | |
894 const Register temp = R6_ARG4; // temp register | |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
895 |
14445 | 896 //assert_clean_int(count, O3); // Make sure 'count' is clean int. |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
897 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
898 Label L_exit, L_skip_align1, L_skip_align2, L_fill_byte; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
899 Label L_fill_2_bytes, L_fill_4_bytes, L_fill_elements, L_fill_32_bytes; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
900 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
901 int shift = -1; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
902 switch (t) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
903 case T_BYTE: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
904 shift = 2; |
14445 | 905 // Clone bytes (zero extend not needed because store instructions below ignore high order bytes). |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
906 __ rldimi(value, value, 8, 48); // 8 bit -> 16 bit |
14445 | 907 __ cmpdi(CCR0, count, 2<<shift); // Short arrays (< 8 bytes) fill by element. |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
908 __ blt(CCR0, L_fill_elements); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
909 __ rldimi(value, value, 16, 32); // 16 bit -> 32 bit |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
910 break; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
911 case T_SHORT: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
912 shift = 1; |
14445 | 913 // Clone bytes (zero extend not needed because store instructions below ignore high order bytes). |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
914 __ rldimi(value, value, 16, 32); // 16 bit -> 32 bit |
14445 | 915 __ cmpdi(CCR0, count, 2<<shift); // Short arrays (< 8 bytes) fill by element. |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
916 __ blt(CCR0, L_fill_elements); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
917 break; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
918 case T_INT: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
919 shift = 0; |
14445 | 920 __ cmpdi(CCR0, count, 2<<shift); // Short arrays (< 8 bytes) fill by element. |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
921 __ blt(CCR0, L_fill_4_bytes); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
922 break; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
923 default: ShouldNotReachHere(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
924 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
925 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
926 if (!aligned && (t == T_BYTE || t == T_SHORT)) { |
14445 | 927 // Align source address at 4 bytes address boundary. |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
928 if (t == T_BYTE) { |
14445 | 929 // One byte misalignment happens only for byte arrays. |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
930 __ andi_(temp, to, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
931 __ beq(CCR0, L_skip_align1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
932 __ stb(value, 0, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
933 __ addi(to, to, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
934 __ addi(count, count, -1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
935 __ bind(L_skip_align1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
936 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
937 // Two bytes misalignment happens only for byte and short (char) arrays. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
938 __ andi_(temp, to, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
939 __ beq(CCR0, L_skip_align2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
940 __ sth(value, 0, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
941 __ addi(to, to, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
942 __ addi(count, count, -(1 << (shift - 1))); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
943 __ bind(L_skip_align2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
944 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
945 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
946 if (!aligned) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
947 // Align to 8 bytes, we know we are 4 byte aligned to start. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
948 __ andi_(temp, to, 7); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
949 __ beq(CCR0, L_fill_32_bytes); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
950 __ stw(value, 0, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
951 __ addi(to, to, 4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
952 __ addi(count, count, -(1 << shift)); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
953 __ bind(L_fill_32_bytes); |
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 |
14445 | 956 __ li(temp, 8<<shift); // Prepare for 32 byte loop. |
957 // Clone bytes int->long as above. | |
958 __ rldimi(value, value, 32, 0); // 32 bit -> 64 bit | |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
959 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
960 Label L_check_fill_8_bytes; |
14445 | 961 // Fill 32-byte chunks. |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
962 __ subf_(count, temp, count); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
963 __ blt(CCR0, L_check_fill_8_bytes); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
964 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
965 Label L_fill_32_bytes_loop; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
966 __ align(32); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
967 __ bind(L_fill_32_bytes_loop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
968 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
969 __ std(value, 0, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
970 __ std(value, 8, to); |
14445 | 971 __ subf_(count, temp, count); // Update count. |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
972 __ std(value, 16, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
973 __ std(value, 24, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
974 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
975 __ addi(to, to, 32); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
976 __ bge(CCR0, L_fill_32_bytes_loop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
977 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
978 __ bind(L_check_fill_8_bytes); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
979 __ add_(count, temp, count); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
980 __ beq(CCR0, L_exit); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
981 __ addic_(count, count, -(2 << shift)); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
982 __ blt(CCR0, L_fill_4_bytes); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
983 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
984 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
985 // Length is too short, just fill 8 bytes at a time. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
986 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
987 Label L_fill_8_bytes_loop; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
988 __ bind(L_fill_8_bytes_loop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
989 __ std(value, 0, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
990 __ addic_(count, count, -(2 << shift)); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
991 __ addi(to, to, 8); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
992 __ bge(CCR0, L_fill_8_bytes_loop); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
993 |
14445 | 994 // Fill trailing 4 bytes. |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
995 __ bind(L_fill_4_bytes); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
996 __ andi_(temp, count, 1<<shift); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
997 __ beq(CCR0, L_fill_2_bytes); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
998 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
999 __ stw(value, 0, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1000 if (t == T_BYTE || t == T_SHORT) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1001 __ addi(to, to, 4); |
14445 | 1002 // Fill trailing 2 bytes. |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1003 __ bind(L_fill_2_bytes); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1004 __ andi_(temp, count, 1<<(shift-1)); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1005 __ beq(CCR0, L_fill_byte); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1006 __ sth(value, 0, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1007 if (t == T_BYTE) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1008 __ addi(to, to, 2); |
14445 | 1009 // Fill trailing byte. |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1010 __ bind(L_fill_byte); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1011 __ andi_(count, count, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1012 __ beq(CCR0, L_exit); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1013 __ stb(value, 0, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1014 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1015 __ bind(L_fill_byte); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1016 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1017 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1018 __ bind(L_fill_2_bytes); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1019 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1020 __ bind(L_exit); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1021 __ blr(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1022 |
14445 | 1023 // Handle copies less than 8 bytes. Int is handled elsewhere. |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1024 if (t == T_BYTE) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1025 __ bind(L_fill_elements); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1026 Label L_fill_2, L_fill_4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1027 __ andi_(temp, count, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1028 __ beq(CCR0, L_fill_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1029 __ stb(value, 0, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1030 __ addi(to, to, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1031 __ bind(L_fill_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1032 __ andi_(temp, count, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1033 __ beq(CCR0, L_fill_4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1034 __ stb(value, 0, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1035 __ stb(value, 0, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1036 __ addi(to, to, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1037 __ bind(L_fill_4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1038 __ andi_(temp, count, 4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1039 __ beq(CCR0, L_exit); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1040 __ stb(value, 0, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1041 __ stb(value, 1, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1042 __ stb(value, 2, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1043 __ stb(value, 3, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1044 __ blr(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1045 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1046 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1047 if (t == T_SHORT) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1048 Label L_fill_2; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1049 __ bind(L_fill_elements); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1050 __ andi_(temp, count, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1051 __ beq(CCR0, L_fill_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1052 __ sth(value, 0, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1053 __ addi(to, to, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1054 __ bind(L_fill_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1055 __ andi_(temp, count, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1056 __ beq(CCR0, L_exit); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1057 __ sth(value, 0, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1058 __ sth(value, 2, to); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1059 __ blr(); |
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 start; |
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 |
14445 | 1065 // Generate overlap test for array copy stubs. |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1066 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1067 // Input: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1068 // R3_ARG1 - from |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1069 // R4_ARG2 - to |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1070 // R5_ARG3 - element count |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1071 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1072 void array_overlap_test(address no_overlap_target, int log2_elem_size) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1073 Register tmp1 = R6_ARG4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1074 Register tmp2 = R7_ARG5; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1075 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1076 Label l_overlap; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1077 #ifdef ASSERT |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1078 __ srdi_(tmp2, R5_ARG3, 31); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1079 __ asm_assert_eq("missing zero extend", 0xAFFE); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1080 #endif |
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 __ subf(tmp1, R3_ARG1, R4_ARG2); // distance in bytes |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1083 __ sldi(tmp2, R5_ARG3, log2_elem_size); // size in bytes |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1084 __ cmpld(CCR0, R3_ARG1, R4_ARG2); // Use unsigned comparison! |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1085 __ cmpld(CCR1, tmp1, tmp2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1086 __ crand(/*CCR0 lt*/0, /*CCR1 lt*/4+0, /*CCR0 lt*/0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1087 __ blt(CCR0, l_overlap); // Src before dst and distance smaller than size. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1088 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1089 // need to copy forwards |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1090 if (__ is_within_range_of_b(no_overlap_target, __ pc())) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1091 __ b(no_overlap_target); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1092 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1093 __ load_const(tmp1, no_overlap_target, tmp2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1094 __ mtctr(tmp1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1095 __ bctr(); |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1098 __ bind(l_overlap); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1099 // need to copy backwards |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1100 } |
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 // The guideline in the implementations of generate_disjoint_xxx_copy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1103 // (xxx=byte,short,int,long,oop) is to copy as many elements as possible with |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1104 // single instructions, but to avoid alignment interrupts (see subsequent |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1105 // comment). Furthermore, we try to minimize misaligned access, even |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1106 // though they cause no alignment interrupt. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1107 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1108 // In Big-Endian mode, the PowerPC architecture requires implementations to |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1109 // handle automatically misaligned integer halfword and word accesses, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1110 // word-aligned integer doubleword accesses, and word-aligned floating-point |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1111 // accesses. Other accesses may or may not generate an Alignment interrupt |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1112 // depending on the implementation. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1113 // Alignment interrupt handling may require on the order of hundreds of cycles, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1114 // so every effort should be made to avoid misaligned memory values. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1115 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1116 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1117 // Generate stub for disjoint byte copy. If "aligned" is true, the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1118 // "from" and "to" addresses are assumed to be heapword aligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1119 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1120 // Arguments for generated stub: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1121 // from: R3_ARG1 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1122 // to: R4_ARG2 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1123 // count: R5_ARG3 treated as signed |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1124 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1125 address generate_disjoint_byte_copy(bool aligned, const char * name) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1126 StubCodeMark mark(this, "StubRoutines", name); |
17803 | 1127 address start = __ function_entry(); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1128 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1129 Register tmp1 = R6_ARG4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1130 Register tmp2 = R7_ARG5; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1131 Register tmp3 = R8_ARG6; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1132 Register tmp4 = R9_ARG7; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1133 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1134 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1135 Label l_1, l_2, l_3, l_4, l_5, l_6, l_7, l_8, l_9; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1136 // Don't try anything fancy if arrays don't have many elements. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1137 __ li(tmp3, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1138 __ cmpwi(CCR0, R5_ARG3, 17); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1139 __ ble(CCR0, l_6); // copy 4 at a time |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1140 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1141 if (!aligned) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1142 __ xorr(tmp1, R3_ARG1, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1143 __ andi_(tmp1, tmp1, 3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1144 __ bne(CCR0, l_6); // If arrays don't have the same alignment mod 4, do 4 element copy. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1145 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1146 // Copy elements if necessary to align to 4 bytes. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1147 __ neg(tmp1, R3_ARG1); // Compute distance to alignment boundary. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1148 __ andi_(tmp1, tmp1, 3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1149 __ beq(CCR0, l_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1150 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1151 __ subf(R5_ARG3, tmp1, R5_ARG3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1152 __ bind(l_9); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1153 __ lbz(tmp2, 0, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1154 __ addic_(tmp1, tmp1, -1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1155 __ stb(tmp2, 0, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1156 __ addi(R3_ARG1, R3_ARG1, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1157 __ addi(R4_ARG2, R4_ARG2, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1158 __ bne(CCR0, l_9); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1159 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1160 __ bind(l_2); |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1163 // copy 8 elements at a time |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1164 __ xorr(tmp2, R3_ARG1, R4_ARG2); // skip if src & dest have differing alignment mod 8 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1165 __ andi_(tmp1, tmp2, 7); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1166 __ bne(CCR0, l_7); // not same alignment -> to or from is aligned -> copy 8 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1167 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1168 // copy a 2-element word if necessary to align to 8 bytes |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1169 __ andi_(R0, R3_ARG1, 7); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1170 __ beq(CCR0, l_7); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1171 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1172 __ lwzx(tmp2, R3_ARG1, tmp3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1173 __ addi(R5_ARG3, R5_ARG3, -4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1174 __ stwx(tmp2, R4_ARG2, tmp3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1175 { // FasterArrayCopy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1176 __ addi(R3_ARG1, R3_ARG1, 4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1177 __ addi(R4_ARG2, R4_ARG2, 4); |
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 __ bind(l_7); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1180 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1181 { // FasterArrayCopy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1182 __ cmpwi(CCR0, R5_ARG3, 31); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1183 __ ble(CCR0, l_6); // copy 2 at a time if less than 32 elements remain |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1184 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1185 __ srdi(tmp1, R5_ARG3, 5); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1186 __ andi_(R5_ARG3, R5_ARG3, 31); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1187 __ mtctr(tmp1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1188 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1189 __ bind(l_8); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1190 // Use unrolled version for mass copying (copy 32 elements a time) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1191 // Load feeding store gets zero latency on Power6, however not on Power5. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1192 // Therefore, the following sequence is made for the good of both. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1193 __ ld(tmp1, 0, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1194 __ ld(tmp2, 8, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1195 __ ld(tmp3, 16, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1196 __ ld(tmp4, 24, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1197 __ std(tmp1, 0, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1198 __ std(tmp2, 8, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1199 __ std(tmp3, 16, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1200 __ std(tmp4, 24, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1201 __ addi(R3_ARG1, R3_ARG1, 32); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1202 __ addi(R4_ARG2, R4_ARG2, 32); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1203 __ bdnz(l_8); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1204 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1205 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1206 __ bind(l_6); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1207 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1208 // copy 4 elements at a time |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1209 __ cmpwi(CCR0, R5_ARG3, 4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1210 __ blt(CCR0, l_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1211 __ srdi(tmp1, R5_ARG3, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1212 __ mtctr(tmp1); // is > 0 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1213 __ andi_(R5_ARG3, R5_ARG3, 3); |
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 { // FasterArrayCopy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1216 __ addi(R3_ARG1, R3_ARG1, -4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1217 __ addi(R4_ARG2, R4_ARG2, -4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1218 __ bind(l_3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1219 __ lwzu(tmp2, 4, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1220 __ stwu(tmp2, 4, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1221 __ bdnz(l_3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1222 __ addi(R3_ARG1, R3_ARG1, 4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1223 __ addi(R4_ARG2, R4_ARG2, 4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1224 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1225 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1226 // do single element copy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1227 __ bind(l_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1228 __ cmpwi(CCR0, R5_ARG3, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1229 __ beq(CCR0, l_4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1230 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1231 { // FasterArrayCopy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1232 __ mtctr(R5_ARG3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1233 __ addi(R3_ARG1, R3_ARG1, -1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1234 __ addi(R4_ARG2, R4_ARG2, -1); |
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 __ bind(l_5); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1237 __ lbzu(tmp2, 1, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1238 __ stbu(tmp2, 1, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1239 __ bdnz(l_5); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1240 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1241 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1242 __ bind(l_4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1243 __ blr(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1244 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1245 return start; |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1248 // Generate stub for conjoint byte copy. If "aligned" is true, the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1249 // "from" and "to" addresses are assumed to be heapword aligned. |
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 // Arguments for generated stub: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1252 // from: R3_ARG1 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1253 // to: R4_ARG2 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1254 // count: R5_ARG3 treated as signed |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1255 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1256 address generate_conjoint_byte_copy(bool aligned, const char * name) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1257 StubCodeMark mark(this, "StubRoutines", name); |
17803 | 1258 address start = __ function_entry(); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1259 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1260 Register tmp1 = R6_ARG4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1261 Register tmp2 = R7_ARG5; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1262 Register tmp3 = R8_ARG6; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1263 |
17803 | 1264 #if defined(ABI_ELFv2) |
1265 address nooverlap_target = aligned ? | |
1266 StubRoutines::arrayof_jbyte_disjoint_arraycopy() : | |
1267 StubRoutines::jbyte_disjoint_arraycopy(); | |
1268 #else | |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1269 address nooverlap_target = aligned ? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1270 ((FunctionDescriptor*)StubRoutines::arrayof_jbyte_disjoint_arraycopy())->entry() : |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1271 ((FunctionDescriptor*)StubRoutines::jbyte_disjoint_arraycopy())->entry(); |
17803 | 1272 #endif |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1273 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1274 array_overlap_test(nooverlap_target, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1275 // Do reverse copy. We assume the case of actual overlap is rare enough |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1276 // that we don't have to optimize it. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1277 Label l_1, l_2; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1278 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1279 __ b(l_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1280 __ bind(l_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1281 __ stbx(tmp1, R4_ARG2, R5_ARG3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1282 __ bind(l_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1283 __ addic_(R5_ARG3, R5_ARG3, -1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1284 __ lbzx(tmp1, R3_ARG1, R5_ARG3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1285 __ bge(CCR0, l_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1286 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1287 __ blr(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1288 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1289 return start; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1290 } |
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 // Generate stub for disjoint short copy. If "aligned" is true, the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1293 // "from" and "to" addresses are assumed to be heapword aligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1294 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1295 // Arguments for generated stub: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1296 // from: R3_ARG1 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1297 // to: R4_ARG2 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1298 // elm.count: R5_ARG3 treated as signed |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1299 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1300 // Strategy for aligned==true: |
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 // If length <= 9: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1303 // 1. copy 2 elements at a time (l_6) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1304 // 2. copy last element if original element count was odd (l_1) |
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 // If length > 9: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1307 // 1. copy 4 elements at a time until less than 4 elements are left (l_7) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1308 // 2. copy 2 elements at a time until less than 2 elements are left (l_6) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1309 // 3. copy last element if one was left in step 2. (l_1) |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1310 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1311 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1312 // Strategy for aligned==false: |
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 // If length <= 9: same as aligned==true case, but NOTE: load/stores |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1315 // can be unaligned (see comment below) |
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 // If length > 9: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1318 // 1. continue with step 6. if the alignment of from and to mod 4 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1319 // is different. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1320 // 2. align from and to to 4 bytes by copying 1 element if necessary |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1321 // 3. at l_2 from and to are 4 byte aligned; continue with |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1322 // 5. if they cannot be aligned to 8 bytes because they have |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1323 // got different alignment mod 8. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1324 // 4. at this point we know that both, from and to, have the same |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1325 // alignment mod 8, now copy one element if necessary to get |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1326 // 8 byte alignment of from and to. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1327 // 5. copy 4 elements at a time until less than 4 elements are |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1328 // left; depending on step 3. all load/stores are aligned or |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1329 // either all loads or all stores are unaligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1330 // 6. copy 2 elements at a time until less than 2 elements are |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1331 // left (l_6); arriving here from step 1., there is a chance |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1332 // that all accesses are unaligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1333 // 7. copy last element if one was left in step 6. (l_1) |
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 // There are unaligned data accesses using integer load/store |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1336 // instructions in this stub. POWER allows such accesses. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1337 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1338 // According to the manuals (PowerISA_V2.06_PUBLIC, Book II, |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1339 // Chapter 2: Effect of Operand Placement on Performance) unaligned |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1340 // integer load/stores have good performance. Only unaligned |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1341 // floating point load/stores can have poor performance. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1342 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1343 // TODO: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1344 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1345 // 1. check if aligning the backbranch target of loops is beneficial |
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 address generate_disjoint_short_copy(bool aligned, const char * name) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1348 StubCodeMark mark(this, "StubRoutines", name); |
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 Register tmp1 = R6_ARG4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1351 Register tmp2 = R7_ARG5; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1352 Register tmp3 = R8_ARG6; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1353 Register tmp4 = R9_ARG7; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1354 |
17803 | 1355 address start = __ function_entry(); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1356 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1357 Label l_1, l_2, l_3, l_4, l_5, l_6, l_7, l_8; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1358 // don't try anything fancy if arrays don't have many elements |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1359 __ li(tmp3, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1360 __ cmpwi(CCR0, R5_ARG3, 9); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1361 __ ble(CCR0, l_6); // copy 2 at a time |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1362 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1363 if (!aligned) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1364 __ xorr(tmp1, R3_ARG1, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1365 __ andi_(tmp1, tmp1, 3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1366 __ bne(CCR0, l_6); // if arrays don't have the same alignment mod 4, do 2 element copy |
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 // At this point it is guaranteed that both, from and to have the same alignment mod 4. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1369 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1370 // Copy 1 element if necessary to align to 4 bytes. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1371 __ andi_(tmp1, R3_ARG1, 3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1372 __ beq(CCR0, l_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1373 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1374 __ lhz(tmp2, 0, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1375 __ addi(R3_ARG1, R3_ARG1, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1376 __ sth(tmp2, 0, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1377 __ addi(R4_ARG2, R4_ARG2, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1378 __ addi(R5_ARG3, R5_ARG3, -1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1379 __ bind(l_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1380 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1381 // At this point the positions of both, from and to, are at least 4 byte aligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1382 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1383 // Copy 4 elements at a time. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1384 // Align to 8 bytes, but only if both, from and to, have same alignment mod 8. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1385 __ xorr(tmp2, R3_ARG1, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1386 __ andi_(tmp1, tmp2, 7); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1387 __ bne(CCR0, l_7); // not same alignment mod 8 -> copy 4, either from or to will be unaligned |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1388 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1389 // Copy a 2-element word if necessary to align to 8 bytes. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1390 __ andi_(R0, R3_ARG1, 7); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1391 __ beq(CCR0, l_7); |
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 __ lwzx(tmp2, R3_ARG1, tmp3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1394 __ addi(R5_ARG3, R5_ARG3, -2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1395 __ stwx(tmp2, R4_ARG2, tmp3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1396 { // FasterArrayCopy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1397 __ addi(R3_ARG1, R3_ARG1, 4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1398 __ addi(R4_ARG2, R4_ARG2, 4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1399 } |
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 __ bind(l_7); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1403 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1404 // Copy 4 elements at a time; either the loads or the stores can |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1405 // be unaligned if aligned == false. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1406 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1407 { // FasterArrayCopy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1408 __ cmpwi(CCR0, R5_ARG3, 15); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1409 __ ble(CCR0, l_6); // copy 2 at a time if less than 16 elements remain |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1410 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1411 __ srdi(tmp1, R5_ARG3, 4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1412 __ andi_(R5_ARG3, R5_ARG3, 15); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1413 __ mtctr(tmp1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1414 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1415 __ bind(l_8); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1416 // Use unrolled version for mass copying (copy 16 elements a time). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1417 // Load feeding store gets zero latency on Power6, however not on Power5. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1418 // Therefore, the following sequence is made for the good of both. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1419 __ ld(tmp1, 0, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1420 __ ld(tmp2, 8, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1421 __ ld(tmp3, 16, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1422 __ ld(tmp4, 24, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1423 __ std(tmp1, 0, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1424 __ std(tmp2, 8, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1425 __ std(tmp3, 16, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1426 __ std(tmp4, 24, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1427 __ addi(R3_ARG1, R3_ARG1, 32); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1428 __ addi(R4_ARG2, R4_ARG2, 32); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1429 __ bdnz(l_8); |
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 __ bind(l_6); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1432 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1433 // copy 2 elements at a time |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1434 { // FasterArrayCopy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1435 __ cmpwi(CCR0, R5_ARG3, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1436 __ blt(CCR0, l_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1437 __ srdi(tmp1, R5_ARG3, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1438 __ andi_(R5_ARG3, R5_ARG3, 1); |
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 __ addi(R3_ARG1, R3_ARG1, -4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1441 __ addi(R4_ARG2, R4_ARG2, -4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1442 __ mtctr(tmp1); |
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(l_3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1445 __ lwzu(tmp2, 4, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1446 __ stwu(tmp2, 4, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1447 __ bdnz(l_3); |
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 __ addi(R3_ARG1, R3_ARG1, 4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1450 __ addi(R4_ARG2, R4_ARG2, 4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1451 } |
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 // do single element copy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1454 __ bind(l_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1455 __ cmpwi(CCR0, R5_ARG3, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1456 __ beq(CCR0, l_4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1457 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1458 { // FasterArrayCopy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1459 __ mtctr(R5_ARG3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1460 __ addi(R3_ARG1, R3_ARG1, -2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1461 __ addi(R4_ARG2, R4_ARG2, -2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1462 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1463 __ bind(l_5); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1464 __ lhzu(tmp2, 2, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1465 __ sthu(tmp2, 2, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1466 __ bdnz(l_5); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1467 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1468 __ bind(l_4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1469 __ blr(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1470 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1471 return start; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1472 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1473 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1474 // Generate stub for conjoint short copy. If "aligned" is true, the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1475 // "from" and "to" addresses are assumed to be heapword aligned. |
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 // Arguments for generated stub: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1478 // from: R3_ARG1 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1479 // to: R4_ARG2 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1480 // count: R5_ARG3 treated as signed |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1481 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1482 address generate_conjoint_short_copy(bool aligned, const char * name) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1483 StubCodeMark mark(this, "StubRoutines", name); |
17803 | 1484 address start = __ function_entry(); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1485 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1486 Register tmp1 = R6_ARG4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1487 Register tmp2 = R7_ARG5; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1488 Register tmp3 = R8_ARG6; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1489 |
17803 | 1490 #if defined(ABI_ELFv2) |
1491 address nooverlap_target = aligned ? | |
1492 StubRoutines::arrayof_jshort_disjoint_arraycopy() : | |
1493 StubRoutines::jshort_disjoint_arraycopy(); | |
1494 #else | |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1495 address nooverlap_target = aligned ? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1496 ((FunctionDescriptor*)StubRoutines::arrayof_jshort_disjoint_arraycopy())->entry() : |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1497 ((FunctionDescriptor*)StubRoutines::jshort_disjoint_arraycopy())->entry(); |
17803 | 1498 #endif |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1499 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1500 array_overlap_test(nooverlap_target, 1); |
ec28f9c041ff
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 l_1, l_2; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1503 __ sldi(tmp1, R5_ARG3, 1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1504 __ b(l_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1505 __ bind(l_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1506 __ sthx(tmp2, R4_ARG2, tmp1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1507 __ bind(l_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1508 __ addic_(tmp1, tmp1, -2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1509 __ lhzx(tmp2, R3_ARG1, tmp1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1510 __ bge(CCR0, l_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1511 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1512 __ blr(); |
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 return start; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1515 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1516 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1517 // Generate core code for disjoint int copy (and oop copy on 32-bit). If "aligned" |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1518 // is true, the "from" and "to" addresses are assumed to be heapword aligned. |
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 // Arguments: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1521 // from: R3_ARG1 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1522 // to: R4_ARG2 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1523 // count: R5_ARG3 treated as signed |
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 void generate_disjoint_int_copy_core(bool aligned) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1526 Register tmp1 = R6_ARG4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1527 Register tmp2 = R7_ARG5; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1528 Register tmp3 = R8_ARG6; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1529 Register tmp4 = R0; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1530 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1531 Label l_1, l_2, l_3, l_4, l_5, l_6; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1532 // for short arrays, just do single element copy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1533 __ li(tmp3, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1534 __ cmpwi(CCR0, R5_ARG3, 5); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1535 __ ble(CCR0, l_2); |
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 if (!aligned) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1538 // check if arrays have same alignment mod 8. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1539 __ xorr(tmp1, R3_ARG1, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1540 __ andi_(R0, tmp1, 7); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1541 // Not the same alignment, but ld and std just need to be 4 byte aligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1542 __ bne(CCR0, l_4); // to OR from is 8 byte aligned -> copy 2 at a time |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1543 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1544 // copy 1 element to align to and from on an 8 byte boundary |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1545 __ andi_(R0, R3_ARG1, 7); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1546 __ beq(CCR0, l_4); |
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 __ lwzx(tmp2, R3_ARG1, tmp3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1549 __ addi(R5_ARG3, R5_ARG3, -1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1550 __ stwx(tmp2, R4_ARG2, tmp3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1551 { // FasterArrayCopy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1552 __ addi(R3_ARG1, R3_ARG1, 4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1553 __ addi(R4_ARG2, R4_ARG2, 4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1554 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1555 __ bind(l_4); |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1558 { // FasterArrayCopy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1559 __ cmpwi(CCR0, R5_ARG3, 7); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1560 __ ble(CCR0, l_2); // copy 1 at a time if less than 8 elements remain |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1561 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1562 __ srdi(tmp1, R5_ARG3, 3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1563 __ andi_(R5_ARG3, R5_ARG3, 7); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1564 __ mtctr(tmp1); |
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 __ bind(l_6); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1567 // Use unrolled version for mass copying (copy 8 elements a time). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1568 // Load feeding store gets zero latency on power6, however not on power 5. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1569 // Therefore, the following sequence is made for the good of both. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1570 __ ld(tmp1, 0, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1571 __ ld(tmp2, 8, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1572 __ ld(tmp3, 16, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1573 __ ld(tmp4, 24, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1574 __ std(tmp1, 0, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1575 __ std(tmp2, 8, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1576 __ std(tmp3, 16, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1577 __ std(tmp4, 24, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1578 __ addi(R3_ARG1, R3_ARG1, 32); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1579 __ addi(R4_ARG2, R4_ARG2, 32); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1580 __ bdnz(l_6); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1581 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1582 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1583 // copy 1 element at a time |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1584 __ bind(l_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1585 __ cmpwi(CCR0, R5_ARG3, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1586 __ beq(CCR0, l_1); |
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 { // FasterArrayCopy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1589 __ mtctr(R5_ARG3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1590 __ addi(R3_ARG1, R3_ARG1, -4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1591 __ addi(R4_ARG2, R4_ARG2, -4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1592 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1593 __ bind(l_3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1594 __ lwzu(tmp2, 4, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1595 __ stwu(tmp2, 4, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1596 __ bdnz(l_3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1597 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1598 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1599 __ bind(l_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1600 return; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1601 } |
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 // Generate stub for disjoint int copy. If "aligned" is true, the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1604 // "from" and "to" addresses are assumed to be heapword aligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1605 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1606 // Arguments for generated stub: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1607 // from: R3_ARG1 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1608 // to: R4_ARG2 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1609 // count: R5_ARG3 treated as signed |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1610 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1611 address generate_disjoint_int_copy(bool aligned, const char * name) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1612 StubCodeMark mark(this, "StubRoutines", name); |
17803 | 1613 address start = __ function_entry(); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1614 generate_disjoint_int_copy_core(aligned); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1615 __ blr(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1616 return start; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1617 } |
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 // Generate core code for conjoint int copy (and oop copy on |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1620 // 32-bit). If "aligned" is true, the "from" and "to" addresses |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1621 // are assumed to be heapword aligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1622 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1623 // Arguments: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1624 // from: R3_ARG1 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1625 // to: R4_ARG2 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1626 // count: R5_ARG3 treated as signed |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1627 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1628 void generate_conjoint_int_copy_core(bool aligned) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1629 // Do reverse copy. We assume the case of actual overlap is rare enough |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1630 // that we don't have to optimize it. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1631 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1632 Label l_1, l_2, l_3, l_4, l_5, l_6; |
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 Register tmp1 = R6_ARG4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1635 Register tmp2 = R7_ARG5; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1636 Register tmp3 = R8_ARG6; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1637 Register tmp4 = R0; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1638 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1639 { // FasterArrayCopy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1640 __ cmpwi(CCR0, R5_ARG3, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1641 __ beq(CCR0, l_6); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1642 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1643 __ sldi(R5_ARG3, R5_ARG3, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1644 __ add(R3_ARG1, R3_ARG1, R5_ARG3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1645 __ add(R4_ARG2, R4_ARG2, R5_ARG3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1646 __ srdi(R5_ARG3, R5_ARG3, 2); |
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 __ cmpwi(CCR0, R5_ARG3, 7); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1649 __ ble(CCR0, l_5); // copy 1 at a time if less than 8 elements remain |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1650 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1651 __ srdi(tmp1, R5_ARG3, 3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1652 __ andi(R5_ARG3, R5_ARG3, 7); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1653 __ mtctr(tmp1); |
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 __ bind(l_4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1656 // Use unrolled version for mass copying (copy 4 elements a time). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1657 // Load feeding store gets zero latency on Power6, however not on Power5. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1658 // Therefore, the following sequence is made for the good of both. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1659 __ addi(R3_ARG1, R3_ARG1, -32); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1660 __ addi(R4_ARG2, R4_ARG2, -32); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1661 __ ld(tmp4, 24, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1662 __ ld(tmp3, 16, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1663 __ ld(tmp2, 8, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1664 __ ld(tmp1, 0, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1665 __ std(tmp4, 24, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1666 __ std(tmp3, 16, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1667 __ std(tmp2, 8, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1668 __ std(tmp1, 0, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1669 __ bdnz(l_4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1670 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1671 __ cmpwi(CCR0, R5_ARG3, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1672 __ beq(CCR0, l_6); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1673 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1674 __ bind(l_5); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1675 __ mtctr(R5_ARG3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1676 __ bind(l_3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1677 __ lwz(R0, -4, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1678 __ stw(R0, -4, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1679 __ addi(R3_ARG1, R3_ARG1, -4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1680 __ addi(R4_ARG2, R4_ARG2, -4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1681 __ bdnz(l_3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1682 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1683 __ bind(l_6); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1684 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1685 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1686 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1687 // Generate stub for conjoint int copy. If "aligned" is true, the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1688 // "from" and "to" addresses are assumed to be heapword aligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1689 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1690 // Arguments for generated stub: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1691 // from: R3_ARG1 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1692 // to: R4_ARG2 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1693 // count: R5_ARG3 treated as signed |
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 address generate_conjoint_int_copy(bool aligned, const char * name) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1696 StubCodeMark mark(this, "StubRoutines", name); |
17803 | 1697 address start = __ function_entry(); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1698 |
17803 | 1699 #if defined(ABI_ELFv2) |
1700 address nooverlap_target = aligned ? | |
1701 StubRoutines::arrayof_jint_disjoint_arraycopy() : | |
1702 StubRoutines::jint_disjoint_arraycopy(); | |
1703 #else | |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1704 address nooverlap_target = aligned ? |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1705 ((FunctionDescriptor*)StubRoutines::arrayof_jint_disjoint_arraycopy())->entry() : |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1706 ((FunctionDescriptor*)StubRoutines::jint_disjoint_arraycopy())->entry(); |
17803 | 1707 #endif |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1708 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1709 array_overlap_test(nooverlap_target, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1710 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1711 generate_conjoint_int_copy_core(aligned); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1712 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1713 __ blr(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1714 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1715 return start; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1716 } |
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 // Generate core code for disjoint long copy (and oop copy on |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1719 // 64-bit). If "aligned" is true, the "from" and "to" addresses |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1720 // are assumed to be heapword aligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1721 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1722 // Arguments: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1723 // from: R3_ARG1 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1724 // to: R4_ARG2 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1725 // count: R5_ARG3 treated as signed |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1726 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1727 void generate_disjoint_long_copy_core(bool aligned) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1728 Register tmp1 = R6_ARG4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1729 Register tmp2 = R7_ARG5; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1730 Register tmp3 = R8_ARG6; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1731 Register tmp4 = R0; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1732 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1733 Label l_1, l_2, l_3, l_4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1734 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1735 { // FasterArrayCopy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1736 __ cmpwi(CCR0, R5_ARG3, 3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1737 __ ble(CCR0, l_3); // copy 1 at a time if less than 4 elements remain |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1738 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1739 __ srdi(tmp1, R5_ARG3, 2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1740 __ andi_(R5_ARG3, R5_ARG3, 3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1741 __ mtctr(tmp1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1742 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1743 __ bind(l_4); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1744 // Use unrolled version for mass copying (copy 4 elements a time). |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1745 // Load feeding store gets zero latency on Power6, however not on Power5. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1746 // Therefore, the following sequence is made for the good of both. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1747 __ ld(tmp1, 0, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1748 __ ld(tmp2, 8, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1749 __ ld(tmp3, 16, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1750 __ ld(tmp4, 24, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1751 __ std(tmp1, 0, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1752 __ std(tmp2, 8, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1753 __ std(tmp3, 16, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1754 __ std(tmp4, 24, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1755 __ addi(R3_ARG1, R3_ARG1, 32); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1756 __ addi(R4_ARG2, R4_ARG2, 32); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1757 __ bdnz(l_4); |
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 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1760 // copy 1 element at a time |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1761 __ bind(l_3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1762 __ cmpwi(CCR0, R5_ARG3, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1763 __ beq(CCR0, l_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1764 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1765 { // FasterArrayCopy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1766 __ mtctr(R5_ARG3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1767 __ addi(R3_ARG1, R3_ARG1, -8); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1768 __ addi(R4_ARG2, R4_ARG2, -8); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1769 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1770 __ bind(l_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1771 __ ldu(R0, 8, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1772 __ stdu(R0, 8, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1773 __ bdnz(l_2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1774 |
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 __ bind(l_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1777 } |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1778 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1779 // Generate stub for disjoint long copy. If "aligned" is true, the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1780 // "from" and "to" addresses are assumed to be heapword aligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1781 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1782 // Arguments for generated stub: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1783 // from: R3_ARG1 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1784 // to: R4_ARG2 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1785 // count: R5_ARG3 treated as signed |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1786 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1787 address generate_disjoint_long_copy(bool aligned, const char * name) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1788 StubCodeMark mark(this, "StubRoutines", name); |
17803 | 1789 address start = __ function_entry(); |
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1790 generate_disjoint_long_copy_core(aligned); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1791 __ blr(); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1792 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1793 return start; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1794 } |
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 // Generate core code for conjoint long copy (and oop copy on |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1797 // 64-bit). If "aligned" is true, the "from" and "to" addresses |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1798 // are assumed to be heapword aligned. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1799 // |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1800 // Arguments: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1801 // from: R3_ARG1 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1802 // to: R4_ARG2 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1803 // count: R5_ARG3 treated as signed |
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 void generate_conjoint_long_copy_core(bool aligned) { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1806 Register tmp1 = R6_ARG4; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1807 Register tmp2 = R7_ARG5; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1808 Register tmp3 = R8_ARG6; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1809 Register tmp4 = R0; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1810 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1811 Label l_1, l_2, l_3, l_4, l_5; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1812 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1813 __ cmpwi(CCR0, R5_ARG3, 0); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1814 __ beq(CCR0, l_1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1815 |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1816 { // FasterArrayCopy |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1817 __ sldi(R5_ARG3, R5_ARG3, 3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1818 __ add(R3_ARG1, R3_ARG1, R5_ARG3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
1819 __ add(R4_ARG2, R4_ARG2, R5_ARG3); |
ec28f9c041ff
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parents:
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|
1820 __ srdi(R5_ARG3, R5_ARG3, 3); |
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parents:
diff
changeset
|
1821 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1822 __ cmpwi(CCR0, R5_ARG3, 3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1823 __ ble(CCR0, l_5); // copy 1 at a time if less than 4 elements remain |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1824 |
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parents:
diff
changeset
|
1825 __ srdi(tmp1, R5_ARG3, 2); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1826 __ andi(R5_ARG3, R5_ARG3, 3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1827 __ mtctr(tmp1); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1828 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1829 __ bind(l_4); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1830 // Use unrolled version for mass copying (copy 4 elements a time). |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1831 // Load feeding store gets zero latency on Power6, however not on Power5. |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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|
1832 // Therefore, the following sequence is made for the good of both. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1833 __ addi(R3_ARG1, R3_ARG1, -32); |
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parents:
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|
1834 __ addi(R4_ARG2, R4_ARG2, -32); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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changeset
|
1835 __ ld(tmp4, 24, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1836 __ ld(tmp3, 16, R3_ARG1); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1837 __ ld(tmp2, 8, R3_ARG1); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1838 __ ld(tmp1, 0, R3_ARG1); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1839 __ std(tmp4, 24, R4_ARG2); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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changeset
|
1840 __ std(tmp3, 16, R4_ARG2); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1841 __ std(tmp2, 8, R4_ARG2); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1842 __ std(tmp1, 0, R4_ARG2); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1843 __ bdnz(l_4); |
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parents:
diff
changeset
|
1844 |
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parents:
diff
changeset
|
1845 __ cmpwi(CCR0, R5_ARG3, 0); |
ec28f9c041ff
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parents:
diff
changeset
|
1846 __ beq(CCR0, l_1); |
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parents:
diff
changeset
|
1847 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1848 __ bind(l_5); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1849 __ mtctr(R5_ARG3); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1850 __ bind(l_3); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1851 __ ld(R0, -8, R3_ARG1); |
ec28f9c041ff
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parents:
diff
changeset
|
1852 __ std(R0, -8, R4_ARG2); |
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parents:
diff
changeset
|
1853 __ addi(R3_ARG1, R3_ARG1, -8); |
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parents:
diff
changeset
|
1854 __ addi(R4_ARG2, R4_ARG2, -8); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1855 __ bdnz(l_3); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1856 |
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parents:
diff
changeset
|
1857 } |
ec28f9c041ff
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parents:
diff
changeset
|
1858 __ bind(l_1); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1859 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1860 |
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parents:
diff
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|
1861 // Generate stub for conjoint long copy. If "aligned" is true, the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1862 // "from" and "to" addresses are assumed to be heapword aligned. |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1863 // |
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parents:
diff
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|
1864 // Arguments for generated stub: |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1865 // from: R3_ARG1 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1866 // to: R4_ARG2 |
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parents:
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|
1867 // count: R5_ARG3 treated as signed |
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parents:
diff
changeset
|
1868 // |
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parents:
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|
1869 address generate_conjoint_long_copy(bool aligned, const char * name) { |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1870 StubCodeMark mark(this, "StubRoutines", name); |
17803 | 1871 address start = __ function_entry(); |
14408
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parents:
diff
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|
1872 |
17803 | 1873 #if defined(ABI_ELFv2) |
1874 address nooverlap_target = aligned ? | |
1875 StubRoutines::arrayof_jlong_disjoint_arraycopy() : | |
1876 StubRoutines::jlong_disjoint_arraycopy(); | |
1877 #else | |
14408
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parents:
diff
changeset
|
1878 address nooverlap_target = aligned ? |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1879 ((FunctionDescriptor*)StubRoutines::arrayof_jlong_disjoint_arraycopy())->entry() : |
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parents:
diff
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|
1880 ((FunctionDescriptor*)StubRoutines::jlong_disjoint_arraycopy())->entry(); |
17803 | 1881 #endif |
14408
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parents:
diff
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|
1882 |
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parents:
diff
changeset
|
1883 array_overlap_test(nooverlap_target, 3); |
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parents:
diff
changeset
|
1884 generate_conjoint_long_copy_core(aligned); |
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parents:
diff
changeset
|
1885 |
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parents:
diff
changeset
|
1886 __ blr(); |
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parents:
diff
changeset
|
1887 |
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parents:
diff
changeset
|
1888 return start; |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1889 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1890 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1891 // Generate stub for conjoint oop copy. If "aligned" is true, the |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1892 // "from" and "to" addresses are assumed to be heapword aligned. |
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parents:
diff
changeset
|
1893 // |
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parents:
diff
changeset
|
1894 // Arguments for generated stub: |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
1895 // from: R3_ARG1 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1896 // to: R4_ARG2 |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1897 // count: R5_ARG3 treated as signed |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1898 // dest_uninitialized: G1 support |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1899 // |
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parents:
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|
1900 address generate_conjoint_oop_copy(bool aligned, const char * name, bool dest_uninitialized) { |
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parents:
diff
changeset
|
1901 StubCodeMark mark(this, "StubRoutines", name); |
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parents:
diff
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|
1902 |
17803 | 1903 address start = __ function_entry(); |
14408
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parents:
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|
1904 |
17803 | 1905 #if defined(ABI_ELFv2) |
1906 address nooverlap_target = aligned ? | |
1907 StubRoutines::arrayof_oop_disjoint_arraycopy() : | |
1908 StubRoutines::oop_disjoint_arraycopy(); | |
1909 #else | |
14408
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parents:
diff
changeset
|
1910 address nooverlap_target = aligned ? |
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parents:
diff
changeset
|
1911 ((FunctionDescriptor*)StubRoutines::arrayof_oop_disjoint_arraycopy())->entry() : |
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parents:
diff
changeset
|
1912 ((FunctionDescriptor*)StubRoutines::oop_disjoint_arraycopy())->entry(); |
17803 | 1913 #endif |
14408
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parents:
diff
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|
1914 |
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parents:
diff
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|
1915 gen_write_ref_array_pre_barrier(R3_ARG1, R4_ARG2, R5_ARG3, dest_uninitialized, R9_ARG7); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1916 |
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parents:
diff
changeset
|
1917 // Save arguments. |
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parents:
diff
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|
1918 __ mr(R9_ARG7, R4_ARG2); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1919 __ mr(R10_ARG8, R5_ARG3); |
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parents:
diff
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|
1920 |
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parents:
diff
changeset
|
1921 if (UseCompressedOops) { |
ec28f9c041ff
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parents:
diff
changeset
|
1922 array_overlap_test(nooverlap_target, 2); |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1923 generate_conjoint_int_copy_core(aligned); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1924 } else { |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1925 array_overlap_test(nooverlap_target, 3); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1926 generate_conjoint_long_copy_core(aligned); |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1927 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1928 |
14445 | 1929 gen_write_ref_array_post_barrier(R9_ARG7, R10_ARG8, R11_scratch1, /*branchToEnd*/ false); |
14408
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parents:
diff
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|
1930 return start; |
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parents:
diff
changeset
|
1931 } |
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1932 |
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|
1933 // Generate stub for disjoint oop copy. If "aligned" is true, the |
ec28f9c041ff
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parents:
diff
changeset
|
1934 // "from" and "to" addresses are assumed to be heapword aligned. |
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parents:
diff
changeset
|
1935 // |
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parents:
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|
1936 // Arguments for generated stub: |
ec28f9c041ff
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parents:
diff
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|
1937 // from: R3_ARG1 |
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parents:
diff
changeset
|
1938 // to: R4_ARG2 |
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parents:
diff
changeset
|
1939 // count: R5_ARG3 treated as signed |
ec28f9c041ff
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parents:
diff
changeset
|
1940 // dest_uninitialized: G1 support |
ec28f9c041ff
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parents:
diff
changeset
|
1941 // |
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parents:
diff
changeset
|
1942 address generate_disjoint_oop_copy(bool aligned, const char * name, bool dest_uninitialized) { |
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parents:
diff
changeset
|
1943 StubCodeMark mark(this, "StubRoutines", name); |
17803 | 1944 address start = __ function_entry(); |
14408
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parents:
diff
changeset
|
1945 |
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parents:
diff
changeset
|
1946 gen_write_ref_array_pre_barrier(R3_ARG1, R4_ARG2, R5_ARG3, dest_uninitialized, R9_ARG7); |
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parents:
diff
changeset
|
1947 |
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parents:
diff
changeset
|
1948 // save some arguments, disjoint_long_copy_core destroys them. |
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parents:
diff
changeset
|
1949 // needed for post barrier |
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parents:
diff
changeset
|
1950 __ mr(R9_ARG7, R4_ARG2); |
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parents:
diff
changeset
|
1951 __ mr(R10_ARG8, R5_ARG3); |
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parents:
diff
changeset
|
1952 |
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parents:
diff
changeset
|
1953 if (UseCompressedOops) { |
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parents:
diff
changeset
|
1954 generate_disjoint_int_copy_core(aligned); |
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parents:
diff
changeset
|
1955 } else { |
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parents:
diff
changeset
|
1956 generate_disjoint_long_copy_core(aligned); |
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parents:
diff
changeset
|
1957 } |
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parents:
diff
changeset
|
1958 |
14445 | 1959 gen_write_ref_array_post_barrier(R9_ARG7, R10_ARG8, R11_scratch1, /*branchToEnd*/ false); |
14408
ec28f9c041ff
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parents:
diff
changeset
|
1960 |
ec28f9c041ff
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parents:
diff
changeset
|
1961 return start; |
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
1962 } |
ec28f9c041ff
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parents:
diff
changeset
|
1963 |
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1964 void generate_arraycopy_stubs() { |
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1965 // Note: the disjoint stubs must be generated first, some of |
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|
1966 // the conjoint stubs use them. |
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|
1967 |
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1968 // non-aligned disjoint versions |
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1969 StubRoutines::_jbyte_disjoint_arraycopy = generate_disjoint_byte_copy(false, "jbyte_disjoint_arraycopy"); |
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1970 StubRoutines::_jshort_disjoint_arraycopy = generate_disjoint_short_copy(false, "jshort_disjoint_arraycopy"); |
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1971 StubRoutines::_jint_disjoint_arraycopy = generate_disjoint_int_copy(false, "jint_disjoint_arraycopy"); |
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1972 StubRoutines::_jlong_disjoint_arraycopy = generate_disjoint_long_copy(false, "jlong_disjoint_arraycopy"); |
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|
1973 StubRoutines::_oop_disjoint_arraycopy = generate_disjoint_oop_copy(false, "oop_disjoint_arraycopy", false); |
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1974 StubRoutines::_oop_disjoint_arraycopy_uninit = generate_disjoint_oop_copy(false, "oop_disjoint_arraycopy_uninit", true); |
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|
1975 |
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|
1976 // aligned disjoint versions |
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1977 StubRoutines::_arrayof_jbyte_disjoint_arraycopy = generate_disjoint_byte_copy(true, "arrayof_jbyte_disjoint_arraycopy"); |
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1978 StubRoutines::_arrayof_jshort_disjoint_arraycopy = generate_disjoint_short_copy(true, "arrayof_jshort_disjoint_arraycopy"); |
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|
1979 StubRoutines::_arrayof_jint_disjoint_arraycopy = generate_disjoint_int_copy(true, "arrayof_jint_disjoint_arraycopy"); |
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1980 StubRoutines::_arrayof_jlong_disjoint_arraycopy = generate_disjoint_long_copy(true, "arrayof_jlong_disjoint_arraycopy"); |
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|
1981 StubRoutines::_arrayof_oop_disjoint_arraycopy = generate_disjoint_oop_copy(true, "arrayof_oop_disjoint_arraycopy", false); |
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1982 StubRoutines::_arrayof_oop_disjoint_arraycopy_uninit = generate_disjoint_oop_copy(true, "oop_disjoint_arraycopy_uninit", true); |
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|
1983 |
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|
1984 // non-aligned conjoint versions |
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|
1985 StubRoutines::_jbyte_arraycopy = generate_conjoint_byte_copy(false, "jbyte_arraycopy"); |
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|
1986 StubRoutines::_jshort_arraycopy = generate_conjoint_short_copy(false, "jshort_arraycopy"); |
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|
1987 StubRoutines::_jint_arraycopy = generate_conjoint_int_copy(false, "jint_arraycopy"); |
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|
1988 StubRoutines::_jlong_arraycopy = generate_conjoint_long_copy(false, "jlong_arraycopy"); |
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|
1989 StubRoutines::_oop_arraycopy = generate_conjoint_oop_copy(false, "oop_arraycopy", false); |
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|
1990 StubRoutines::_oop_arraycopy_uninit = generate_conjoint_oop_copy(false, "oop_arraycopy_uninit", true); |
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|
1991 |
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|
1992 // aligned conjoint versions |
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|
1993 StubRoutines::_arrayof_jbyte_arraycopy = generate_conjoint_byte_copy(true, "arrayof_jbyte_arraycopy"); |
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|
1994 StubRoutines::_arrayof_jshort_arraycopy = generate_conjoint_short_copy(true, "arrayof_jshort_arraycopy"); |
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|
1995 StubRoutines::_arrayof_jint_arraycopy = generate_conjoint_int_copy(true, "arrayof_jint_arraycopy"); |
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|
1996 StubRoutines::_arrayof_jlong_arraycopy = generate_conjoint_long_copy(true, "arrayof_jlong_arraycopy"); |
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|
1997 StubRoutines::_arrayof_oop_arraycopy = generate_conjoint_oop_copy(true, "arrayof_oop_arraycopy", false); |
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|
1998 StubRoutines::_arrayof_oop_arraycopy_uninit = generate_conjoint_oop_copy(true, "arrayof_oop_arraycopy", true); |
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|
1999 |
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|
2000 // fill routines |
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|
2001 StubRoutines::_jbyte_fill = generate_fill(T_BYTE, false, "jbyte_fill"); |
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|
2002 StubRoutines::_jshort_fill = generate_fill(T_SHORT, false, "jshort_fill"); |
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|
2003 StubRoutines::_jint_fill = generate_fill(T_INT, false, "jint_fill"); |
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|
2004 StubRoutines::_arrayof_jbyte_fill = generate_fill(T_BYTE, true, "arrayof_jbyte_fill"); |
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|
2005 StubRoutines::_arrayof_jshort_fill = generate_fill(T_SHORT, true, "arrayof_jshort_fill"); |
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|
2006 StubRoutines::_arrayof_jint_fill = generate_fill(T_INT, true, "arrayof_jint_fill"); |
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|
2007 } |
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|
2008 |
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|
2009 // Safefetch stubs. |
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|
2010 void generate_safefetch(const char* name, int size, address* entry, address* fault_pc, address* continuation_pc) { |
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|
2011 // safefetch signatures: |
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|
2012 // int SafeFetch32(int* adr, int errValue); |
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|
2013 // intptr_t SafeFetchN (intptr_t* adr, intptr_t errValue); |
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|
2014 // |
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|
2015 // arguments: |
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parents:
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|
2016 // R3_ARG1 = adr |
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|
2017 // R4_ARG2 = errValue |
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|
2018 // |
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|
2019 // result: |
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parents:
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|
2020 // R3_RET = *adr or errValue |
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|
2021 |
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|
2022 StubCodeMark mark(this, "StubRoutines", name); |
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|
2023 |
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|
2024 // Entry point, pc or function descriptor. |
17803 | 2025 *entry = __ function_entry(); |
14408
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|
2026 |
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|
2027 // Load *adr into R4_ARG2, may fault. |
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|
2028 *fault_pc = __ pc(); |
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|
2029 switch (size) { |
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changeset
|
2030 case 4: |
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|
2031 // int32_t, signed extended |
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|
2032 __ lwa(R4_ARG2, 0, R3_ARG1); |
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parents:
diff
changeset
|
2033 break; |
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parents:
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changeset
|
2034 case 8: |
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|
2035 // int64_t |
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diff
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|
2036 __ ld(R4_ARG2, 0, R3_ARG1); |
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diff
changeset
|
2037 break; |
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parents:
diff
changeset
|
2038 default: |
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parents:
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changeset
|
2039 ShouldNotReachHere(); |
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|
2040 } |
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parents:
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changeset
|
2041 |
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parents:
diff
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|
2042 // return errValue or *adr |
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diff
changeset
|
2043 *continuation_pc = __ pc(); |
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|
2044 __ mr(R3_RET, R4_ARG2); |
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parents:
diff
changeset
|
2045 __ blr(); |
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parents:
diff
changeset
|
2046 } |
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parents:
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|
2047 |
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parents:
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changeset
|
2048 // Initialization |
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parents:
diff
changeset
|
2049 void generate_initial() { |
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changeset
|
2050 // Generates all stubs and initializes the entry points |
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changeset
|
2051 |
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parents:
diff
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|
2052 // Entry points that exist in all platforms. |
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parents:
diff
changeset
|
2053 // Note: This is code that could be shared among different platforms - however the |
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parents:
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changeset
|
2054 // benefit seems to be smaller than the disadvantage of having a |
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parents:
diff
changeset
|
2055 // much more complicated generator structure. See also comment in |
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parents:
diff
changeset
|
2056 // stubRoutines.hpp. |
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parents:
diff
changeset
|
2057 |
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changeset
|
2058 StubRoutines::_forward_exception_entry = generate_forward_exception(); |
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|
2059 StubRoutines::_call_stub_entry = generate_call_stub(StubRoutines::_call_stub_return_address); |
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|
2060 StubRoutines::_catch_exception_entry = generate_catch_exception(); |
17793 | 2061 |
2062 // Build this early so it's available for the interpreter. | |
2063 StubRoutines::_throw_StackOverflowError_entry = | |
2064 generate_throw_exception("StackOverflowError throw_exception", | |
2065 CAST_FROM_FN_PTR(address, SharedRuntime::throw_StackOverflowError), false); | |
14408
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parents:
diff
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|
2066 } |
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parents:
diff
changeset
|
2067 |
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parents:
diff
changeset
|
2068 void generate_all() { |
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parents:
diff
changeset
|
2069 // Generates all stubs and initializes the entry points |
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parents:
diff
changeset
|
2070 |
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parents:
diff
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|
2071 // These entry points require SharedInfo::stack0 to be set up in |
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parents:
diff
changeset
|
2072 // non-core builds |
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parents:
diff
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|
2073 StubRoutines::_throw_AbstractMethodError_entry = generate_throw_exception("AbstractMethodError throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_AbstractMethodError), false); |
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|
2074 // Handle IncompatibleClassChangeError in itable stubs. |
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parents:
diff
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|
2075 StubRoutines::_throw_IncompatibleClassChangeError_entry= generate_throw_exception("IncompatibleClassChangeError throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_IncompatibleClassChangeError), false); |
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|
2076 StubRoutines::_throw_NullPointerException_at_call_entry= generate_throw_exception("NullPointerException at call throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_NullPointerException_at_call), false); |
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parents:
diff
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|
2077 |
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|
2078 StubRoutines::_handler_for_unsafe_access_entry = generate_handler_for_unsafe_access(); |
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parents:
diff
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|
2079 |
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parents:
diff
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|
2080 // support for verify_oop (must happen after universe_init) |
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diff
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|
2081 StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop(); |
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parents:
diff
changeset
|
2082 |
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parents:
diff
changeset
|
2083 // arraycopy stubs used by compilers |
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parents:
diff
changeset
|
2084 generate_arraycopy_stubs(); |
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parents:
diff
changeset
|
2085 |
17800
c4178a748df9
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goetz
parents:
17793
diff
changeset
|
2086 if (UseAESIntrinsics) { |
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goetz
parents:
17793
diff
changeset
|
2087 guarantee(!UseAESIntrinsics, "not yet implemented."); |
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goetz
parents:
17793
diff
changeset
|
2088 } |
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goetz
parents:
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2089 |
17804 | 2090 // Safefetch stubs. |
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2091 generate_safefetch("SafeFetch32", sizeof(int), &StubRoutines::_safefetch32_entry, |
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2092 &StubRoutines::_safefetch32_fault_pc, |
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2093 &StubRoutines::_safefetch32_continuation_pc); |
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2094 generate_safefetch("SafeFetchN", sizeof(intptr_t), &StubRoutines::_safefetchN_entry, |
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2095 &StubRoutines::_safefetchN_fault_pc, |
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2096 &StubRoutines::_safefetchN_continuation_pc); |
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2097 } |
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2098 |
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2099 public: |
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2100 StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) { |
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2101 // replace the standard masm with a special one: |
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2102 _masm = new MacroAssembler(code); |
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2103 if (all) { |
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2104 generate_all(); |
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2105 } else { |
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2106 generate_initial(); |
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2107 } |
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2108 } |
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2109 }; |
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2110 |
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2111 void StubGenerator_generate(CodeBuffer* code, bool all) { |
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2112 StubGenerator g(code, all); |
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2113 } |