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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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5636 ASSERT(instr->HasEnvironment()); | 5636 ASSERT(instr->HasEnvironment()); |
5637 LEnvironment* env = instr->environment(); | 5637 LEnvironment* env = instr->environment(); |
5638 // There is no LLazyBailout instruction for stack-checks. We have to | 5638 // There is no LLazyBailout instruction for stack-checks. We have to |
5639 // prepare for lazy deoptimization explicitly here. | 5639 // prepare for lazy deoptimization explicitly here. |
5640 if (instr->hydrogen()->is_function_entry()) { | 5640 if (instr->hydrogen()->is_function_entry()) { |
5641 // Perform stack overflow check. | 5641 // Perform stack overflow check. |
5642 Label done; | 5642 Label done; |
5643 __ LoadRoot(ip, Heap::kStackLimitRootIndex); | 5643 __ LoadRoot(ip, Heap::kStackLimitRootIndex); |
5644 __ cmp(sp, Operand(ip)); | 5644 __ cmp(sp, Operand(ip)); |
5645 __ b(hs, &done); | 5645 __ b(hs, &done); |
5646 StackCheckStub stub; | |
5647 PredictableCodeSizeScope predictable(masm_, 2 * Assembler::kInstrSize); | 5646 PredictableCodeSizeScope predictable(masm_, 2 * Assembler::kInstrSize); |
5648 CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr); | 5647 CallCode(isolate()->builtins()->StackCheck(), |
| 5648 RelocInfo::CODE_TARGET, |
| 5649 instr); |
5649 EnsureSpaceForLazyDeopt(); | 5650 EnsureSpaceForLazyDeopt(); |
5650 last_lazy_deopt_pc_ = masm()->pc_offset(); | 5651 last_lazy_deopt_pc_ = masm()->pc_offset(); |
5651 __ bind(&done); | 5652 __ bind(&done); |
5652 RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); | 5653 RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
5653 safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); | 5654 safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
5654 } else { | 5655 } else { |
5655 ASSERT(instr->hydrogen()->is_backwards_branch()); | 5656 ASSERT(instr->hydrogen()->is_backwards_branch()); |
5656 // Perform stack overflow check if this goto needs it before jumping. | 5657 // Perform stack overflow check if this goto needs it before jumping. |
5657 DeferredStackCheck* deferred_stack_check = | 5658 DeferredStackCheck* deferred_stack_check = |
5658 new(zone()) DeferredStackCheck(this, instr); | 5659 new(zone()) DeferredStackCheck(this, instr); |
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5778 __ sub(scratch, result, Operand::PointerOffsetFromSmiKey(index)); | 5779 __ sub(scratch, result, Operand::PointerOffsetFromSmiKey(index)); |
5779 __ ldr(result, FieldMemOperand(scratch, | 5780 __ ldr(result, FieldMemOperand(scratch, |
5780 FixedArray::kHeaderSize - kPointerSize)); | 5781 FixedArray::kHeaderSize - kPointerSize)); |
5781 __ bind(&done); | 5782 __ bind(&done); |
5782 } | 5783 } |
5783 | 5784 |
5784 | 5785 |
5785 #undef __ | 5786 #undef __ |
5786 | 5787 |
5787 } } // namespace v8::internal | 5788 } } // namespace v8::internal |
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