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annotate src/cpu/x86/vm/graalCodeInstaller_x86.hpp @ 11760:ce0b00597980

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made safepoint-on-return use specialized HotSpot runtime support for such safepoints (which have no debug info attached)
author Doug Simon <doug.simon@oracle.com>
date Tue, 24 Sep 2013 08:51:02 +0200
parents 4e1db4c9d4c5
children 4c96ccce3772
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1 /*
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2 * Copyright (c) 2013, 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 #ifndef CPU_X86_VM_CODEINSTALLER_X86_HPP
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24 #define CPU_X86_VM_CODEINSTALLER_X86_HPP
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25
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26 #include "compiler/disassembler.hpp"
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27 #include "runtime/javaCalls.hpp"
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28 #include "graal/graalEnv.hpp"
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29 #include "graal/graalCompiler.hpp"
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30 #include "graal/graalCodeInstaller.hpp"
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31 #include "graal/graalJavaAccess.hpp"
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32 #include "graal/graalCompilerToVM.hpp"
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33 #include "graal/graalRuntime.hpp"
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34 #include "asm/register.hpp"
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35 #include "classfile/vmSymbols.hpp"
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36 #include "code/vmreg.hpp"
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37
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38 inline jint CodeInstaller::pd_next_offset(NativeInstruction* inst, jint pc_offset, oop method) {
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39 if (inst->is_call() || inst->is_jump()) {
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40 assert(NativeCall::instruction_size == (int)NativeJump::instruction_size, "unexpected size");
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41 return (pc_offset + NativeCall::instruction_size);
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42 } else if (inst->is_mov_literal64()) {
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43 // mov+call instruction pair
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44 jint offset = pc_offset + NativeMovConstReg::instruction_size;
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45 u_char* call = (u_char*) (_instructions->start() + offset);
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46 assert((call[0] == 0x40 || call[0] == 0x41) && call[1] == 0xFF, "expected call with rex/rexb prefix byte");
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47 offset += 3; /* prefix byte + opcode byte + modrm byte */
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48 return (offset);
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49 } else if (inst->is_call_reg()) {
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50 // the inlined vtable stub contains a "call register" instruction
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51 assert(method != NULL, "only valid for virtual calls");
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52 return (pc_offset + ((NativeCallReg *) inst)->next_instruction_offset());
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53 } else {
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54 fatal("unsupported type of instruction for call site");
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55 return 0;
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56 }
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57 }
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58
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59 inline void CodeInstaller::pd_site_DataPatch(int pc_offset, oop site) {
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60 int alignment = CompilationResult_DataPatch::alignment(site);
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61 bool inlined = CompilationResult_DataPatch::inlined(site) == JNI_TRUE;
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62
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63 address pc = _instructions->start() + pc_offset;
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64
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65 oop constant = CompilationResult_DataPatch::constant(site);
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66 char typeChar;
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67 if (constant != NULL) {
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68 oop kind = Constant::kind(constant);
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69 typeChar = Kind::typeChar(kind);
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70 } else {
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71 assert(!inlined, "cannot inline raw constants");
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72 typeChar = '*';
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73 }
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74
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75 switch (typeChar) {
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76 case 'z':
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77 case 'b':
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78 case 's':
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79 case 'c':
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80 case 'i':
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81 fatal("int-sized values not expected in DataPatch");
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82 break;
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83 case 'f':
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84 case 'j':
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85 case 'd':
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86 case '*': {
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87 if (inlined) {
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88 address operand = Assembler::locate_operand(pc, Assembler::imm_operand);
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89 *((jlong*) operand) = Constant::primitive(constant);
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90 } else {
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91 address operand = Assembler::locate_operand(pc, Assembler::disp32_operand);
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92 address next_instruction = Assembler::locate_next_instruction(pc);
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93 int size = _constants->size();
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94 if (alignment > 0) {
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95 guarantee(alignment <= _constants->alignment(), "Alignment inside constants section is restricted by alignment of section begin");
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96 size = align_size_up(size, alignment);
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97 }
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98 // we don't care if this is a long/double/etc., the primitive field contains the right bits
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99 address dest = _constants->start() + size;
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100 _constants->set_end(dest);
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101 if (constant != NULL) {
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102 uint64_t value = Constant::primitive(constant);
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103 _constants->emit_int64(value);
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104 } else {
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105 arrayOop rawConstant = arrayOop(CompilationResult_DataPatch::rawConstant(site));
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106 int8_t *ptr = (int8_t*) rawConstant->base(T_BYTE);
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107 for (int i = rawConstant->length(); i > 0; i--, ptr++) {
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108 _constants->emit_int8(*ptr);
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109 }
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110 }
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111
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112 long disp = dest - next_instruction;
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113 assert(disp == (jint) disp, "disp doesn't fit in 32 bits");
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114 *((jint*) operand) = (jint) disp;
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115
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116 _instructions->relocate(pc, section_word_Relocation::spec((address) dest, CodeBuffer::SECT_CONSTS), Assembler::disp32_operand);
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117 TRACE_graal_3("relocating (%c) at %p/%p with destination at %p (%d)", typeChar, pc, operand, dest, size);
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118 }
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119 break;
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120 }
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121 case 'a': {
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122 address operand = Assembler::locate_operand(pc, Assembler::imm_operand);
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123 Handle obj = Constant::object(constant);
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124
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125 jobject value = JNIHandles::make_local(obj());
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126 *((jobject*) operand) = value;
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127 _instructions->relocate(pc, oop_Relocation::spec_for_immediate(), Assembler::imm_operand);
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128 TRACE_graal_3("relocating (oop constant) at %p/%p", pc, operand);
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129 break;
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130 }
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131 default:
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132 fatal(err_msg("unexpected Kind (%d) in DataPatch", typeChar));
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133 break;
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134 }
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135 }
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136
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137 inline void CodeInstaller::pd_relocate_CodeBlob(CodeBlob* cb, NativeInstruction* inst) {
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138 if (cb->is_nmethod()) {
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139 nmethod* nm = (nmethod*) cb;
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140 nativeJump_at((address)inst)->set_jump_destination(nm->verified_entry_point());
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141 } else {
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142 nativeJump_at((address)inst)->set_jump_destination(cb->code_begin());
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143 }
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144 _instructions->relocate((address)inst, runtime_call_Relocation::spec(), Assembler::call32_operand);
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145 }
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146
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147 inline void CodeInstaller::pd_relocate_ForeignCall(NativeInstruction* inst, jlong foreign_call_destination) {
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148 if (inst->is_call()) {
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149 // NOTE: for call without a mov, the offset must fit a 32-bit immediate
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150 // see also CompilerToVM.getMaxCallTargetOffset()
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151 NativeCall* call = nativeCall_at((address) (inst));
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152 call->set_destination((address) foreign_call_destination);
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153 _instructions->relocate(call->instruction_address(), runtime_call_Relocation::spec(), Assembler::call32_operand);
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154 } else if (inst->is_mov_literal64()) {
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155 NativeMovConstReg* mov = nativeMovConstReg_at((address) (inst));
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156 mov->set_data((intptr_t) foreign_call_destination);
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157 _instructions->relocate(mov->instruction_address(), runtime_call_Relocation::spec(), Assembler::imm_operand);
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158 } else {
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159 NativeJump* jump = nativeJump_at((address) (inst));
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160 jump->set_jump_destination((address) foreign_call_destination);
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161 _instructions->relocate((address)inst, runtime_call_Relocation::spec(), Assembler::call32_operand);
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162 }
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163 TRACE_graal_3("relocating (foreign call) at %p", inst);
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164 }
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165
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166 inline void CodeInstaller::pd_relocate_JavaMethod(oop hotspot_method, jint pc_offset) {
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167 #ifdef ASSERT
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168 Method* method = NULL;
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169 // we need to check, this might also be an unresolved method
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170 if (hotspot_method->is_a(HotSpotResolvedJavaMethod::klass())) {
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171 method = getMethodFromHotSpotMethod(hotspot_method);
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172 }
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173 #endif
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174 switch (_next_call_type) {
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175 case MARK_INLINE_INVOKE:
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176 break;
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177 case MARK_INVOKEVIRTUAL:
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178 case MARK_INVOKEINTERFACE: {
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179 assert(method == NULL || !method->is_static(), "cannot call static method with invokeinterface");
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180
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181 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset);
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182 call->set_destination(SharedRuntime::get_resolve_virtual_call_stub());
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183 _instructions->relocate(call->instruction_address(),
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184 virtual_call_Relocation::spec(_invoke_mark_pc),
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185 Assembler::call32_operand);
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186 break;
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187 }
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188 case MARK_INVOKESTATIC: {
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189 assert(method == NULL || method->is_static(), "cannot call non-static method with invokestatic");
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190
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191 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset);
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192 call->set_destination(SharedRuntime::get_resolve_static_call_stub());
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193 _instructions->relocate(call->instruction_address(),
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194 relocInfo::static_call_type, Assembler::call32_operand);
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195 break;
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196 }
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197 case MARK_INVOKESPECIAL: {
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198 assert(method == NULL || !method->is_static(), "cannot call static method with invokespecial");
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199 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset);
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200 call->set_destination(SharedRuntime::get_resolve_opt_virtual_call_stub());
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201 _instructions->relocate(call->instruction_address(),
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202 relocInfo::opt_virtual_call_type, Assembler::call32_operand);
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203 break;
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204 }
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205 default:
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206 break;
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207 }
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208 }
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209
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210 inline void CodeInstaller::pd_relocate_poll(address pc, jint mark) {
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211 switch (mark) {
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212 case MARK_POLL_NEAR: {
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213 NativeInstruction* ni = nativeInstruction_at(pc);
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214 int32_t* disp = (int32_t*) Assembler::locate_operand(pc, Assembler::disp32_operand);
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215 // int32_t* disp = (int32_t*) Assembler::locate_operand(instruction, Assembler::disp32_operand);
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216 int32_t offset = *disp; // The Java code installed the polling page offset into the disp32 operand
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217 intptr_t new_disp = (intptr_t) (os::get_polling_page() + offset) - (intptr_t) ni;
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218 *disp = (int32_t)new_disp;
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219 }
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220 case MARK_POLL_FAR:
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221 _instructions->relocate(pc, relocInfo::poll_type);
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222 break;
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223 case MARK_POLL_RETURN_NEAR: {
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224 NativeInstruction* ni = nativeInstruction_at(pc);
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225 int32_t* disp = (int32_t*) Assembler::locate_operand(pc, Assembler::disp32_operand);
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226 // int32_t* disp = (int32_t*) Assembler::locate_operand(instruction, Assembler::disp32_operand);
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227 int32_t offset = *disp; // The Java code installed the polling page offset into the disp32 operand
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228 intptr_t new_disp = (intptr_t) (os::get_polling_page() + offset) - (intptr_t) ni;
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229 *disp = (int32_t)new_disp;
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230 }
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231 case MARK_POLL_RETURN_FAR:
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232 _instructions->relocate(pc, relocInfo::poll_return_type);
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233 break;
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234 default:
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235 ShouldNotReachHere();
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236 break;
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237 }
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238 }
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239
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240 #endif // CPU_X86_VM_CODEINSTALLER_X86_HPP
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241