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annotate src/cpu/x86/vm/jvmciCodeInstaller_x86.cpp @ 22711:316e768645c0

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8139589: [JVMCI] throw exceptions in faulty code installation operations
author Roland Schatz <roland.schatz@oracle.com>
date Thu, 29 Oct 2015 15:21:55 +0100
parents ceca35d52380
children 510846133438
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1 /*
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twisti
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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 "jvmci/jvmciEnv.hpp"
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28 #include "jvmci/jvmciCodeInstaller.hpp"
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29 #include "jvmci/jvmciJavaClasses.hpp"
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30 #include "jvmci/jvmciCompilerToVM.hpp"
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31 #include "jvmci/jvmciRuntime.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, Handle method, TRAPS) {
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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 if (call[0] == Assembler::REX_B) {
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46 offset += 1; /* prefix byte for extended register R8-R15 */
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47 call++;
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48 }
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49 assert(call[0] == 0xFF, "expected call");
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50 offset += 2; /* opcode byte + modrm byte */
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51 return (offset);
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52 } else if (inst->is_call_reg()) {
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53 // the inlined vtable stub contains a "call register" instruction
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54 assert(method.not_null(), "only valid for virtual calls");
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55 return (pc_offset + ((NativeCallReg *) inst)->next_instruction_offset());
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56 } else if (inst->is_cond_jump()) {
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57 address pc = (address) (inst);
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58 return pc_offset + (jint) (Assembler::locate_next_instruction(pc) - pc);
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59 } else {
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60 JVMCI_ERROR_0("unsupported type of instruction for call site");
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61 }
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62 }
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63
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64 void CodeInstaller::pd_patch_OopConstant(int pc_offset, Handle constant, TRAPS) {
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65 address pc = _instructions->start() + pc_offset;
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66 Handle obj = HotSpotObjectConstantImpl::object(constant);
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67 jobject value = JNIHandles::make_local(obj());
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68 if (HotSpotObjectConstantImpl::compressed(constant)) {
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69 #ifdef _LP64
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70 address operand = Assembler::locate_operand(pc, Assembler::narrow_oop_operand);
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71 int oop_index = _oop_recorder->find_index(value);
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72 _instructions->relocate(pc, oop_Relocation::spec(oop_index), Assembler::narrow_oop_operand);
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73 TRACE_jvmci_3("relocating (narrow oop constant) at %p/%p", pc, operand);
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74 #else
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75 JVMCI_ERROR("compressed oop on 32bit");
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76 #endif
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77 } else {
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78 address operand = Assembler::locate_operand(pc, Assembler::imm_operand);
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79 *((jobject*) operand) = value;
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80 _instructions->relocate(pc, oop_Relocation::spec_for_immediate(), Assembler::imm_operand);
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81 TRACE_jvmci_3("relocating (oop constant) at %p/%p", pc, operand);
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82 }
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83 }
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84
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85 void CodeInstaller::pd_patch_MetaspaceConstant(int pc_offset, Handle constant, TRAPS) {
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86 address pc = _instructions->start() + pc_offset;
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87 if (HotSpotMetaspaceConstantImpl::compressed(constant)) {
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88 #ifdef _LP64
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89 address operand = Assembler::locate_operand(pc, Assembler::narrow_oop_operand);
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90 *((narrowKlass*) operand) = record_narrow_metadata_reference(constant, CHECK);
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91 TRACE_jvmci_3("relocating (narrow metaspace constant) at %p/%p", pc, operand);
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92 #else
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93 JVMCI_ERROR("compressed Klass* on 32bit");
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94 #endif
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95 } else {
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96 address operand = Assembler::locate_operand(pc, Assembler::imm_operand);
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97 *((Metadata**) operand) = record_metadata_reference(constant, CHECK);
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98 TRACE_jvmci_3("relocating (metaspace constant) at %p/%p", pc, operand);
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99 }
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100 }
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101
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102 void CodeInstaller::pd_patch_DataSectionReference(int pc_offset, int data_offset) {
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103 address pc = _instructions->start() + pc_offset;
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104
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105 address operand = Assembler::locate_operand(pc, Assembler::disp32_operand);
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106 address next_instruction = Assembler::locate_next_instruction(pc);
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107 address dest = _constants->start() + data_offset;
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108
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109 long disp = dest - next_instruction;
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110 assert(disp == (jint) disp, "disp doesn't fit in 32 bits");
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111 *((jint*) operand) = (jint) disp;
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112
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113 _instructions->relocate(pc, section_word_Relocation::spec((address) dest, CodeBuffer::SECT_CONSTS), Assembler::disp32_operand);
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114 TRACE_jvmci_3("relocating at %p/%p with destination at %p (%d)", pc, operand, dest, data_offset);
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115 }
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116
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117 void CodeInstaller::pd_relocate_ForeignCall(NativeInstruction* inst, jlong foreign_call_destination, TRAPS) {
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118 address pc = (address) inst;
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119 if (inst->is_call()) {
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120 // NOTE: for call without a mov, the offset must fit a 32-bit immediate
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121 // see also CompilerToVM.getMaxCallTargetOffset()
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122 NativeCall* call = nativeCall_at(pc);
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123 call->set_destination((address) foreign_call_destination);
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124 _instructions->relocate(call->instruction_address(), runtime_call_Relocation::spec(), Assembler::call32_operand);
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125 } else if (inst->is_mov_literal64()) {
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126 NativeMovConstReg* mov = nativeMovConstReg_at(pc);
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127 mov->set_data((intptr_t) foreign_call_destination);
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128 _instructions->relocate(mov->instruction_address(), runtime_call_Relocation::spec(), Assembler::imm_operand);
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129 } else if (inst->is_jump()) {
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130 NativeJump* jump = nativeJump_at(pc);
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131 jump->set_jump_destination((address) foreign_call_destination);
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132 _instructions->relocate(jump->instruction_address(), runtime_call_Relocation::spec(), Assembler::call32_operand);
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133 } else if (inst->is_cond_jump()) {
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134 address old_dest = nativeGeneralJump_at(pc)->jump_destination();
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135 address disp = Assembler::locate_operand(pc, Assembler::call32_operand);
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136 *(jint*) disp += ((address) foreign_call_destination) - old_dest;
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137 _instructions->relocate(pc, runtime_call_Relocation::spec(), Assembler::call32_operand);
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138 } else {
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139 JVMCI_ERROR("unsupported relocation for foreign call");
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140 }
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141
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142 TRACE_jvmci_3("relocating (foreign call) at %p", inst);
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143 }
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144
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145 void CodeInstaller::pd_relocate_JavaMethod(Handle hotspot_method, jint pc_offset, TRAPS) {
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146 #ifdef ASSERT
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147 Method* method = NULL;
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148 // we need to check, this might also be an unresolved method
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149 if (hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass())) {
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150 method = getMethodFromHotSpotMethod(hotspot_method());
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151 }
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152 #endif
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153 switch (_next_call_type) {
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154 case INLINE_INVOKE:
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155 break;
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156 case INVOKEVIRTUAL:
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157 case INVOKEINTERFACE: {
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158 assert(method == NULL || !method->is_static(), "cannot call static method with invokeinterface");
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159
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160 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset);
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161 call->set_destination(SharedRuntime::get_resolve_virtual_call_stub());
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162 _instructions->relocate(call->instruction_address(),
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163 virtual_call_Relocation::spec(_invoke_mark_pc),
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164 Assembler::call32_operand);
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165 break;
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166 }
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diff changeset
167 case INVOKESTATIC: {
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168 assert(method == NULL || method->is_static(), "cannot call non-static method with invokestatic");
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169
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170 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset);
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171 call->set_destination(SharedRuntime::get_resolve_static_call_stub());
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172 _instructions->relocate(call->instruction_address(),
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diff changeset
173 relocInfo::static_call_type, Assembler::call32_operand);
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174 break;
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175 }
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diff changeset
176 case INVOKESPECIAL: {
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177 assert(method == NULL || !method->is_static(), "cannot call static method with invokespecial");
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178 NativeCall* call = nativeCall_at(_instructions->start() + pc_offset);
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179 call->set_destination(SharedRuntime::get_resolve_opt_virtual_call_stub());
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180 _instructions->relocate(call->instruction_address(),
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diff changeset
181 relocInfo::opt_virtual_call_type, Assembler::call32_operand);
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182 break;
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183 }
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184 default:
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185 JVMCI_ERROR("invalid _next_call_type value");
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186 break;
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187 }
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188 }
0f7ca53be929 CR-806: Changes to build Graal for SPARC
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189
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04a87dc2cfca refactored common code into a separate function
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diff changeset
190 static void relocate_poll_near(address pc) {
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diff changeset
191 NativeInstruction* ni = nativeInstruction_at(pc);
04a87dc2cfca refactored common code into a separate function
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diff changeset
192 int32_t* disp = (int32_t*) Assembler::locate_operand(pc, Assembler::disp32_operand);
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diff changeset
193 int32_t offset = *disp; // The Java code installed the polling page offset into the disp32 operand
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diff changeset
194 intptr_t new_disp = (intptr_t) (os::get_polling_page() + offset) - (intptr_t) ni;
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diff changeset
195 *disp = (int32_t)new_disp;
04a87dc2cfca refactored common code into a separate function
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diff changeset
196 }
04a87dc2cfca refactored common code into a separate function
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diff changeset
197
04a87dc2cfca refactored common code into a separate function
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diff changeset
198
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diff changeset
199 void CodeInstaller::pd_relocate_poll(address pc, jint mark, TRAPS) {
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ce0b00597980 made safepoint-on-return use specialized HotSpot runtime support for such safepoints (which have no debug info attached)
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diff changeset
200 switch (mark) {
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diff changeset
201 case POLL_NEAR: {
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04a87dc2cfca refactored common code into a separate function
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diff changeset
202 relocate_poll_near(pc);
13553
d49f00604347 removed poll_Relocation::pollingForm type and associated data field and rely solely on format field of safepoint relocation entries when deciding whether or not to relocate the operand of a safepoint poll instruction
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diff changeset
203 _instructions->relocate(pc, relocInfo::poll_type, Assembler::disp32_operand);
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diff changeset
204 break;
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diff changeset
205 }
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diff changeset
206 case POLL_FAR:
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4fc8c8bb4c32 removed Assembler::no_operand alias
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diff changeset
207 // This is a load from a register so there is no relocatable operand.
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diff changeset
208 // We just have to ensure that the format is not disp32_operand
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diff changeset
209 // so that poll_Relocation::fix_relocation_after_move does the right
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diff changeset
210 // thing (i.e. ignores this relocation record)
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diff changeset
211 _instructions->relocate(pc, relocInfo::poll_type, Assembler::imm_operand);
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ce0b00597980 made safepoint-on-return use specialized HotSpot runtime support for such safepoints (which have no debug info attached)
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diff changeset
212 break;
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parents: 14561
diff changeset
213 case POLL_RETURN_NEAR: {
13485
04a87dc2cfca refactored common code into a separate function
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diff changeset
214 relocate_poll_near(pc);
13553
d49f00604347 removed poll_Relocation::pollingForm type and associated data field and rely solely on format field of safepoint relocation entries when deciding whether or not to relocate the operand of a safepoint poll instruction
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parents: 13520
diff changeset
215 _instructions->relocate(pc, relocInfo::poll_return_type, Assembler::disp32_operand);
13512
8085ce95b6f5 reloc info for safepoint polls includes whether the poison page is far or near
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parents: 13485
diff changeset
216 break;
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ce0b00597980 made safepoint-on-return use specialized HotSpot runtime support for such safepoints (which have no debug info attached)
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diff changeset
217 }
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diff changeset
218 case POLL_RETURN_FAR:
15123
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diff changeset
219 // see comment above for POLL_FAR
13561
4fc8c8bb4c32 removed Assembler::no_operand alias
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diff changeset
220 _instructions->relocate(pc, relocInfo::poll_return_type, Assembler::imm_operand);
11760
ce0b00597980 made safepoint-on-return use specialized HotSpot runtime support for such safepoints (which have no debug info attached)
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diff changeset
221 break;
ce0b00597980 made safepoint-on-return use specialized HotSpot runtime support for such safepoints (which have no debug info attached)
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parents: 10810
diff changeset
222 default:
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diff changeset
223 JVMCI_ERROR(err_msg("invalid mark value: %d", mark));
11760
ce0b00597980 made safepoint-on-return use specialized HotSpot runtime support for such safepoints (which have no debug info attached)
Doug Simon <doug.simon@oracle.com>
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diff changeset
224 break;
ce0b00597980 made safepoint-on-return use specialized HotSpot runtime support for such safepoints (which have no debug info attached)
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parents: 10810
diff changeset
225 }
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diff changeset
226 }
17024
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diff changeset
227
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diff changeset
228 // convert JVMCI register indices (as used in oop maps) to HotSpot registers
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diff changeset
229 VMReg CodeInstaller::get_hotspot_reg(jint jvmci_reg, TRAPS) {
21559
be896a1983c0 recast all Graal native code as JVMCI code (JBS:GRAAL-53)
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diff changeset
230 if (jvmci_reg < RegisterImpl::number_of_registers) {
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diff changeset
231 return as_Register(jvmci_reg)->as_VMReg();
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diff changeset
232 } else {
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diff changeset
233 jint floatRegisterNumber = jvmci_reg - RegisterImpl::number_of_registers;
17024
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diff changeset
234 if (floatRegisterNumber < XMMRegisterImpl::number_of_registers) {
4e2d34d7715b [SPARC/AMD64] Splitting up oopmap generation for Intel XMM and SPARC Floatingpoint registers
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diff changeset
235 return as_XMMRegister(floatRegisterNumber)->as_VMReg();
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diff changeset
236 }
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diff changeset
237 JVMCI_ERROR_NULL(err_msg("invalid register number: %d", jvmci_reg));
17024
4e2d34d7715b [SPARC/AMD64] Splitting up oopmap generation for Intel XMM and SPARC Floatingpoint registers
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diff changeset
238 }
4e2d34d7715b [SPARC/AMD64] Splitting up oopmap generation for Intel XMM and SPARC Floatingpoint registers
Stefan Anzinger <stefan.anzinger@oracle.com>
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diff changeset
239 }
4e2d34d7715b [SPARC/AMD64] Splitting up oopmap generation for Intel XMM and SPARC Floatingpoint registers
Stefan Anzinger <stefan.anzinger@oracle.com>
parents: 15582
diff changeset
240
4e2d34d7715b [SPARC/AMD64] Splitting up oopmap generation for Intel XMM and SPARC Floatingpoint registers
Stefan Anzinger <stefan.anzinger@oracle.com>
parents: 15582
diff changeset
241 bool CodeInstaller::is_general_purpose_reg(VMReg hotspotRegister) {
4e2d34d7715b [SPARC/AMD64] Splitting up oopmap generation for Intel XMM and SPARC Floatingpoint registers
Stefan Anzinger <stefan.anzinger@oracle.com>
parents: 15582
diff changeset
242 return !(hotspotRegister->is_FloatRegister() || hotspotRegister->is_XMMRegister());
4e2d34d7715b [SPARC/AMD64] Splitting up oopmap generation for Intel XMM and SPARC Floatingpoint registers
Stefan Anzinger <stefan.anzinger@oracle.com>
parents: 15582
diff changeset
243 }