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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 |
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2203 InstanceofStub stub(flags); | 2203 InstanceofStub stub(flags); |
2204 | 2204 |
2205 PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); | 2205 PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
2206 | 2206 |
2207 // Get the temp register reserved by the instruction. This needs to be r4 as | 2207 // Get the temp register reserved by the instruction. This needs to be r4 as |
2208 // its slot of the pushing of safepoint registers is used to communicate the | 2208 // its slot of the pushing of safepoint registers is used to communicate the |
2209 // offset to the location of the map check. | 2209 // offset to the location of the map check. |
2210 Register temp = ToRegister(instr->TempAt(0)); | 2210 Register temp = ToRegister(instr->TempAt(0)); |
2211 ASSERT(temp.is(r4)); | 2211 ASSERT(temp.is(r4)); |
2212 __ LoadHeapObject(InstanceofStub::right(), instr->function()); | 2212 __ LoadHeapObject(InstanceofStub::right(), instr->function()); |
2213 static const int kAdditionalDelta = 4; | 2213 static const int kAdditionalDelta = 5; |
2214 int delta = masm_->InstructionsGeneratedSince(map_check) + kAdditionalDelta; | 2214 int delta = masm_->InstructionsGeneratedSince(map_check) + kAdditionalDelta; |
2215 Label before_push_delta; | 2215 Label before_push_delta; |
2216 __ bind(&before_push_delta); | 2216 __ bind(&before_push_delta); |
2217 __ BlockConstPoolFor(kAdditionalDelta); | 2217 __ BlockConstPoolFor(kAdditionalDelta); |
2218 __ mov(temp, Operand(delta * kPointerSize)); | 2218 __ mov(temp, Operand(delta * kPointerSize)); |
| 2219 // The mov above can generate one or two instructions. The delta was computed |
| 2220 // for two instructions, so we need to pad here in case of one instruction. |
| 2221 if (masm_->InstructionsGeneratedSince(&before_push_delta) != 2) { |
| 2222 ASSERT_EQ(1, masm_->InstructionsGeneratedSince(&before_push_delta)); |
| 2223 __ nop(); |
| 2224 } |
2219 __ StoreToSafepointRegisterSlot(temp, temp); | 2225 __ StoreToSafepointRegisterSlot(temp, temp); |
2220 CallCodeGeneric(stub.GetCode(), | 2226 CallCodeGeneric(stub.GetCode(), |
2221 RelocInfo::CODE_TARGET, | 2227 RelocInfo::CODE_TARGET, |
2222 instr, | 2228 instr, |
2223 RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); | 2229 RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
2224 ASSERT(instr->HasDeoptimizationEnvironment()); | 2230 ASSERT(instr->HasDeoptimizationEnvironment()); |
2225 LEnvironment* env = instr->deoptimization_environment(); | 2231 LEnvironment* env = instr->deoptimization_environment(); |
2226 safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); | 2232 safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
2227 // Put the result value into the result register slot and | 2233 // Put the result value into the result register slot and |
2228 // restore all registers. | 2234 // restore all registers. |
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4800 ASSERT(osr_pc_offset_ == -1); | 4806 ASSERT(osr_pc_offset_ == -1); |
4801 osr_pc_offset_ = masm()->pc_offset(); | 4807 osr_pc_offset_ = masm()->pc_offset(); |
4802 } | 4808 } |
4803 | 4809 |
4804 | 4810 |
4805 | 4811 |
4806 | 4812 |
4807 #undef __ | 4813 #undef __ |
4808 | 4814 |
4809 } } // namespace v8::internal | 4815 } } // namespace v8::internal |
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