| OLD | NEW |
| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
| (...skipping 144 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 155 unoptimized_code->GetHeap()->incremental_marking()->RecordCodeTargetPatch( | 155 unoptimized_code->GetHeap()->incremental_marking()->RecordCodeTargetPatch( |
| 156 unoptimized_code, pc_after - 2 * kInstrSize, replacement_code); | 156 unoptimized_code, pc_after - 2 * kInstrSize, replacement_code); |
| 157 } | 157 } |
| 158 | 158 |
| 159 | 159 |
| 160 void Deoptimizer::RevertInterruptCodeAt(Code* unoptimized_code, | 160 void Deoptimizer::RevertInterruptCodeAt(Code* unoptimized_code, |
| 161 Address pc_after, | 161 Address pc_after, |
| 162 Code* interrupt_code, | 162 Code* interrupt_code, |
| 163 Code* replacement_code) { | 163 Code* replacement_code) { |
| 164 ASSERT(InterruptCodeIsPatched(unoptimized_code, | 164 ASSERT(InterruptCodeIsPatched(unoptimized_code, |
| 165 pc_after, | 165 pc_after, |
| 166 interrupt_code, | 166 interrupt_code, |
| 167 replacement_code)); | 167 replacement_code)); |
| 168 static const int kInstrSize = Assembler::kInstrSize; | 168 static const int kInstrSize = Assembler::kInstrSize; |
| 169 // Restore the original jump. | 169 // Restore the original jump. |
| 170 CodePatcher patcher(pc_after - 3 * kInstrSize, 1); | 170 CodePatcher patcher(pc_after - 3 * kInstrSize, 1); |
| 171 patcher.masm()->b(4 * kInstrSize, pl); // ok-label is 4 instructions later. | 171 patcher.masm()->b(4 * kInstrSize, pl); // ok-label is 4 instructions later. |
| 172 ASSERT_EQ(kBranchBeforeInterrupt, |
| 173 Memory::int32_at(pc_after - 3 * kInstrSize)); |
| 172 // Restore the original call address. | 174 // Restore the original call address. |
| 173 uint32_t interrupt_address_offset = Memory::uint16_at(pc_after - | 175 uint32_t interrupt_address_offset = Memory::uint16_at(pc_after - |
| 174 2 * kInstrSize) & 0xfff; | 176 2 * kInstrSize) & 0xfff; |
| 175 Address interrupt_address_pointer = pc_after + interrupt_address_offset; | 177 Address interrupt_address_pointer = pc_after + interrupt_address_offset; |
| 176 Memory::uint32_at(interrupt_address_pointer) = | 178 Memory::uint32_at(interrupt_address_pointer) = |
| 177 reinterpret_cast<uint32_t>(interrupt_code->entry()); | 179 reinterpret_cast<uint32_t>(interrupt_code->entry()); |
| 178 | 180 |
| 179 interrupt_code->GetHeap()->incremental_marking()->RecordCodeTargetPatch( | 181 interrupt_code->GetHeap()->incremental_marking()->RecordCodeTargetPatch( |
| 180 unoptimized_code, pc_after - 2 * kInstrSize, interrupt_code); | 182 unoptimized_code, pc_after - 2 * kInstrSize, interrupt_code); |
| 181 } | 183 } |
| 182 | 184 |
| 183 | 185 |
| 184 #ifdef DEBUG | 186 #ifdef DEBUG |
| 185 bool Deoptimizer::InterruptCodeIsPatched(Code* unoptimized_code, | 187 bool Deoptimizer::InterruptCodeIsPatched(Code* unoptimized_code, |
| 186 Address pc_after, | 188 Address pc_after, |
| 187 Code* interrupt_code, | 189 Code* interrupt_code, |
| 188 Code* replacement_code) { | 190 Code* replacement_code) { |
| 189 Address call_target_address = pc_after - kIntSize; | 191 static const int kInstrSize = Assembler::kInstrSize; |
| 190 ASSERT_EQ(kBlxIp, Memory::int32_at(pc_after - kInstrSize)); | 192 ASSERT(Memory::int32_at(pc_after - kInstrSize) == kBlxIp); |
| 191 | 193 |
| 192 uint32_t interrupt_address_offset = | 194 uint32_t interrupt_address_offset = |
| 193 Memory::uint16_at(pc_after - 2 * kInstrSize) & 0xfff; | 195 Memory::uint16_at(pc_after - 2 * kInstrSize) & 0xfff; |
| 194 Address interrupt_address_pointer = pc_after + interrupt_address_offset; | 196 Address interrupt_address_pointer = pc_after + interrupt_address_offset; |
| 195 | 197 |
| 196 if (Assembler::IsNop(Assembler::instr_at(pc_after - 3 * kInstrSize))) { | 198 if (Assembler::IsNop(Assembler::instr_at(pc_after - 3 * kInstrSize))) { |
| 197 ASSERT(Assembler::IsLdrPcImmediateOffset( | 199 ASSERT(Assembler::IsLdrPcImmediateOffset( |
| 198 Assembler::instr_at(pc_after - 2 * kInstrSize))); | 200 Assembler::instr_at(pc_after - 2 * kInstrSize))); |
| 199 ASSERT_EQ(kBranchBeforeInterrupt, | 201 ASSERT(reinterpret_cast<uint32_t>(replacement_code->entry()) == |
| 200 Memory::int32_at(pc_after - 3 * kInstrSize)); | 202 Memory::uint32_at(interrupt_address_pointer)); |
| 201 ASSERT_EQ(reinterpret_cast<uint32_t>(replacement_code->entry()), | |
| 202 Memory::uint32_at(interrupt_address_pointer)); | |
| 203 return true; | 203 return true; |
| 204 } else { | 204 } else { |
| 205 ASSERT(Assembler::IsLdrPcImmediateOffset( | 205 ASSERT(Assembler::IsLdrPcImmediateOffset( |
| 206 Assembler::instr_at(pc_after - 2 * kInstrSize))); | 206 Assembler::instr_at(pc_after - 2 * kInstrSize))); |
| 207 ASSERT_EQ(kBranchBeforeInterrupt, | 207 ASSERT_EQ(kBranchBeforeInterrupt, |
| 208 Memory::int32_at(pc_after - 3 * kInstrSize)); | 208 Memory::int32_at(pc_after - 3 * kInstrSize)); |
| 209 ASSERT_EQ(reinterpret_cast<uint32_t>(interrupt_code->entry()), | 209 ASSERT(reinterpret_cast<uint32_t>(interrupt_code->entry()) == |
| 210 Memory::uint32_at(interrupt_address_pointer)); | 210 Memory::uint32_at(interrupt_address_pointer)); |
| 211 return false; | 211 return false; |
| 212 } | 212 } |
| 213 } | 213 } |
| 214 #endif // DEBUG | 214 #endif // DEBUG |
| 215 | 215 |
| 216 | 216 |
| 217 static int LookupBailoutId(DeoptimizationInputData* data, BailoutId ast_id) { | 217 static int LookupBailoutId(DeoptimizationInputData* data, BailoutId ast_id) { |
| 218 ByteArray* translations = data->TranslationByteArray(); | 218 ByteArray* translations = data->TranslationByteArray(); |
| 219 int length = data->DeoptCount(); | 219 int length = data->DeoptCount(); |
| 220 for (int i = 0; i < length; i++) { | 220 for (int i = 0; i < length; i++) { |
| (...skipping 605 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 826 __ push(ip); | 826 __ push(ip); |
| 827 __ b(&done); | 827 __ b(&done); |
| 828 ASSERT(masm()->pc_offset() - start == table_entry_size_); | 828 ASSERT(masm()->pc_offset() - start == table_entry_size_); |
| 829 } | 829 } |
| 830 __ bind(&done); | 830 __ bind(&done); |
| 831 } | 831 } |
| 832 | 832 |
| 833 #undef __ | 833 #undef __ |
| 834 | 834 |
| 835 } } // namespace v8::internal | 835 } } // namespace v8::internal |
| OLD | NEW |