Mercurial > hg > graal-compiler
annotate src/cpu/x86/vm/graalCodeInstaller_x86.cpp @ 18176:c2270ad35f57
Better construction of data section and data patches.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Mon, 27 Oct 2014 14:07:49 +0100 |
parents | 4e2d34d7715b |
children | a8cff27ca2e1 |
rev | line source |
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1 /* |
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2 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 |
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24 #include "precompiled.hpp" |
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25 #include "compiler/disassembler.hpp" |
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26 #include "runtime/javaCalls.hpp" |
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27 #include "graal/graalEnv.hpp" |
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28 #include "graal/graalCodeInstaller.hpp" |
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29 #include "graal/graalJavaAccess.hpp" |
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30 #include "graal/graalCompilerToVM.hpp" |
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31 #include "graal/graalRuntime.hpp" |
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32 #include "asm/register.hpp" |
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33 #include "classfile/vmSymbols.hpp" |
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34 #include "code/vmreg.hpp" |
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35 #include "vmreg_x86.inline.hpp" |
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36 |
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37 jint CodeInstaller::pd_next_offset(NativeInstruction* inst, jint pc_offset, oop method) { |
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38 if (inst->is_call() || inst->is_jump()) { |
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39 assert(NativeCall::instruction_size == (int)NativeJump::instruction_size, "unexpected size"); |
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40 return (pc_offset + NativeCall::instruction_size); |
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41 } else if (inst->is_mov_literal64()) { |
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42 // mov+call instruction pair |
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43 jint offset = pc_offset + NativeMovConstReg::instruction_size; |
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44 u_char* call = (u_char*) (_instructions->start() + offset); |
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45 assert((call[0] == 0x40 || call[0] == 0x41) && call[1] == 0xFF, "expected call with rex/rexb prefix byte"); |
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46 offset += 3; /* prefix byte + opcode byte + modrm byte */ |
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47 return (offset); |
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48 } else if (inst->is_call_reg()) { |
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49 // the inlined vtable stub contains a "call register" instruction |
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50 assert(method != NULL, "only valid for virtual calls"); |
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51 return (pc_offset + ((NativeCallReg *) inst)->next_instruction_offset()); |
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52 } else if (inst->is_cond_jump()) { |
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53 address pc = (address) (inst); |
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54 return pc_offset + (jint) (Assembler::locate_next_instruction(pc) - pc); |
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55 } else { |
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56 fatal("unsupported type of instruction for call site"); |
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57 return 0; |
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58 } |
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59 } |
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60 |
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61 void CodeInstaller::pd_patch_OopConstant(int pc_offset, Handle& constant) { |
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62 address pc = _instructions->start() + pc_offset; |
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63 Handle obj = HotSpotObjectConstant::object(constant); |
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64 jobject value = JNIHandles::make_local(obj()); |
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65 if (HotSpotObjectConstant::compressed(constant)) { |
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66 address operand = Assembler::locate_operand(pc, Assembler::narrow_oop_operand); |
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67 int oop_index = _oop_recorder->find_index(value); |
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68 _instructions->relocate(pc, oop_Relocation::spec(oop_index), Assembler::narrow_oop_operand); |
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69 TRACE_graal_3("relocating (narrow oop constant) at %p/%p", pc, operand); |
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70 } else { |
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71 address operand = Assembler::locate_operand(pc, Assembler::imm_operand); |
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72 *((jobject*) operand) = value; |
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73 _instructions->relocate(pc, oop_Relocation::spec_for_immediate(), Assembler::imm_operand); |
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74 TRACE_graal_3("relocating (oop constant) at %p/%p", pc, operand); |
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75 } |
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76 } |
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77 |
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78 void CodeInstaller::pd_patch_DataSectionReference(int pc_offset, int data_offset) { |
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79 address pc = _instructions->start() + pc_offset; |
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80 |
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81 address operand = Assembler::locate_operand(pc, Assembler::disp32_operand); |
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82 address next_instruction = Assembler::locate_next_instruction(pc); |
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83 address dest = _constants->start() + data_offset; |
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84 |
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85 long disp = dest - next_instruction; |
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86 assert(disp == (jint) disp, "disp doesn't fit in 32 bits"); |
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87 *((jint*) operand) = (jint) disp; |
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88 |
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89 _instructions->relocate(pc, section_word_Relocation::spec((address) dest, CodeBuffer::SECT_CONSTS), Assembler::disp32_operand); |
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90 TRACE_graal_3("relocating at %p/%p with destination at %p (%d)", pc, operand, dest, data_offset); |
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91 } |
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92 |
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93 void CodeInstaller::pd_relocate_CodeBlob(CodeBlob* cb, NativeInstruction* inst) { |
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94 if (cb->is_nmethod()) { |
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95 nmethod* nm = (nmethod*) cb; |
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96 nativeJump_at((address)inst)->set_jump_destination(nm->verified_entry_point()); |
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97 } else { |
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98 nativeJump_at((address)inst)->set_jump_destination(cb->code_begin()); |
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99 } |
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100 _instructions->relocate((address)inst, runtime_call_Relocation::spec(), Assembler::call32_operand); |
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101 } |
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102 |
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103 void CodeInstaller::pd_relocate_ForeignCall(NativeInstruction* inst, jlong foreign_call_destination) { |
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104 address pc = (address) inst; |
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105 if (inst->is_call()) { |
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106 // NOTE: for call without a mov, the offset must fit a 32-bit immediate |
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107 // see also CompilerToVM.getMaxCallTargetOffset() |
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108 NativeCall* call = nativeCall_at(pc); |
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109 call->set_destination((address) foreign_call_destination); |
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110 _instructions->relocate(call->instruction_address(), runtime_call_Relocation::spec(), Assembler::call32_operand); |
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111 } else if (inst->is_mov_literal64()) { |
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112 NativeMovConstReg* mov = nativeMovConstReg_at(pc); |
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113 mov->set_data((intptr_t) foreign_call_destination); |
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114 _instructions->relocate(mov->instruction_address(), runtime_call_Relocation::spec(), Assembler::imm_operand); |
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115 } else if (inst->is_jump()) { |
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116 NativeJump* jump = nativeJump_at(pc); |
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117 jump->set_jump_destination((address) foreign_call_destination); |
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118 _instructions->relocate(jump->instruction_address(), runtime_call_Relocation::spec(), Assembler::call32_operand); |
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119 } else if (inst->is_cond_jump()) { |
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120 address old_dest = nativeGeneralJump_at(pc)->jump_destination(); |
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121 address disp = Assembler::locate_operand(pc, Assembler::call32_operand); |
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122 *(jint*) disp += ((address) foreign_call_destination) - old_dest; |
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123 _instructions->relocate(pc, runtime_call_Relocation::spec(), Assembler::call32_operand); |
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124 } else { |
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125 fatal("unsupported relocation for foreign call"); |
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126 } |
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127 |
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128 TRACE_graal_3("relocating (foreign call) at %p", inst); |
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129 } |
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130 |
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131 void CodeInstaller::pd_relocate_JavaMethod(oop hotspot_method, jint pc_offset) { |
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132 #ifdef ASSERT |
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133 Method* method = NULL; |
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134 // we need to check, this might also be an unresolved method |
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135 if (hotspot_method->is_a(HotSpotResolvedJavaMethod::klass())) { |
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136 method = getMethodFromHotSpotMethod(hotspot_method); |
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137 } |
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138 #endif |
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139 switch (_next_call_type) { |
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140 case INLINE_INVOKE: |
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141 break; |
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142 case INVOKEVIRTUAL: |
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143 case INVOKEINTERFACE: { |
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144 assert(method == NULL || !method->is_static(), "cannot call static method with invokeinterface"); |
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145 |
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146 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset); |
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147 call->set_destination(SharedRuntime::get_resolve_virtual_call_stub()); |
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148 _instructions->relocate(call->instruction_address(), |
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149 virtual_call_Relocation::spec(_invoke_mark_pc), |
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150 Assembler::call32_operand); |
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151 break; |
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152 } |
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153 case INVOKESTATIC: { |
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154 assert(method == NULL || method->is_static(), "cannot call non-static method with invokestatic"); |
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155 |
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156 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset); |
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157 call->set_destination(SharedRuntime::get_resolve_static_call_stub()); |
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158 _instructions->relocate(call->instruction_address(), |
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159 relocInfo::static_call_type, Assembler::call32_operand); |
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160 break; |
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161 } |
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162 case INVOKESPECIAL: { |
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163 assert(method == NULL || !method->is_static(), "cannot call static method with invokespecial"); |
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164 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset); |
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165 call->set_destination(SharedRuntime::get_resolve_opt_virtual_call_stub()); |
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166 _instructions->relocate(call->instruction_address(), |
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167 relocInfo::opt_virtual_call_type, Assembler::call32_operand); |
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168 break; |
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169 } |
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170 default: |
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171 break; |
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172 } |
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173 } |
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174 |
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175 static void relocate_poll_near(address pc) { |
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176 NativeInstruction* ni = nativeInstruction_at(pc); |
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177 int32_t* disp = (int32_t*) Assembler::locate_operand(pc, Assembler::disp32_operand); |
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178 int32_t offset = *disp; // The Java code installed the polling page offset into the disp32 operand |
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179 intptr_t new_disp = (intptr_t) (os::get_polling_page() + offset) - (intptr_t) ni; |
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180 *disp = (int32_t)new_disp; |
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181 } |
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182 |
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183 |
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184 void CodeInstaller::pd_relocate_poll(address pc, jint mark) { |
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185 switch (mark) { |
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186 case POLL_NEAR: { |
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187 relocate_poll_near(pc); |
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188 _instructions->relocate(pc, relocInfo::poll_type, Assembler::disp32_operand); |
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189 break; |
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190 } |
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191 case POLL_FAR: |
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192 // This is a load from a register so there is no relocatable operand. |
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193 // We just have to ensure that the format is not disp32_operand |
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194 // so that poll_Relocation::fix_relocation_after_move does the right |
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195 // thing (i.e. ignores this relocation record) |
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196 _instructions->relocate(pc, relocInfo::poll_type, Assembler::imm_operand); |
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197 break; |
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198 case POLL_RETURN_NEAR: { |
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199 relocate_poll_near(pc); |
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200 _instructions->relocate(pc, relocInfo::poll_return_type, Assembler::disp32_operand); |
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201 break; |
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202 } |
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203 case POLL_RETURN_FAR: |
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204 // see comment above for POLL_FAR |
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205 _instructions->relocate(pc, relocInfo::poll_return_type, Assembler::imm_operand); |
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206 break; |
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207 default: |
11799 | 208 fatal("invalid mark value"); |
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209 break; |
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210 } |
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211 } |
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212 |
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213 // convert Graal register indices (as used in oop maps) to HotSpot registers |
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214 VMReg CodeInstaller::get_hotspot_reg(jint graal_reg) { |
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215 if (graal_reg < RegisterImpl::number_of_registers) { |
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216 return as_Register(graal_reg)->as_VMReg(); |
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217 } else { |
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218 jint floatRegisterNumber = graal_reg - RegisterImpl::number_of_registers; |
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219 if (floatRegisterNumber < XMMRegisterImpl::number_of_registers) { |
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220 return as_XMMRegister(floatRegisterNumber)->as_VMReg(); |
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221 } |
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222 ShouldNotReachHere(); |
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223 return NULL; |
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224 } |
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225 } |
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226 |
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227 bool CodeInstaller::is_general_purpose_reg(VMReg hotspotRegister) { |
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228 return !(hotspotRegister->is_FloatRegister() || hotspotRegister->is_XMMRegister()); |
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229 } |