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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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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838 Address entry = deopt_jump_table_[i].address; | 838 Address entry = deopt_jump_table_[i].address; |
839 Deoptimizer::BailoutType type = deopt_jump_table_[i].bailout_type; | 839 Deoptimizer::BailoutType type = deopt_jump_table_[i].bailout_type; |
840 int id = Deoptimizer::GetDeoptimizationId(isolate(), entry, type); | 840 int id = Deoptimizer::GetDeoptimizationId(isolate(), entry, type); |
841 if (id == Deoptimizer::kNotDeoptimizationEntry) { | 841 if (id == Deoptimizer::kNotDeoptimizationEntry) { |
842 Comment(";;; jump table entry %d.", i); | 842 Comment(";;; jump table entry %d.", i); |
843 } else { | 843 } else { |
844 Comment(";;; jump table entry %d: deoptimization bailout %d.", i, id); | 844 Comment(";;; jump table entry %d: deoptimization bailout %d.", i, id); |
845 } | 845 } |
846 if (deopt_jump_table_[i].needs_frame) { | 846 if (deopt_jump_table_[i].needs_frame) { |
847 ASSERT(!info()->saves_caller_doubles()); | 847 ASSERT(!info()->saves_caller_doubles()); |
848 __ Mov(__ Tmp0(), Operand(ExternalReference::ForDeoptEntry(entry))); | 848 |
| 849 UseScratchRegisterScope temps(masm()); |
| 850 Register stub_deopt_entry = temps.AcquireX(); |
| 851 Register stub_marker = temps.AcquireX(); |
| 852 |
| 853 __ Mov(stub_deopt_entry, |
| 854 Operand(ExternalReference::ForDeoptEntry(entry))); |
849 if (needs_frame.is_bound()) { | 855 if (needs_frame.is_bound()) { |
850 __ B(&needs_frame); | 856 __ B(&needs_frame); |
851 } else { | 857 } else { |
852 __ Bind(&needs_frame); | 858 __ Bind(&needs_frame); |
853 // This variant of deopt can only be used with stubs. Since we don't | 859 // This variant of deopt can only be used with stubs. Since we don't |
854 // have a function pointer to install in the stack frame that we're | 860 // have a function pointer to install in the stack frame that we're |
855 // building, install a special marker there instead. | 861 // building, install a special marker there instead. |
856 // TODO(jochen): Revisit the use of TmpX(). | |
857 ASSERT(info()->IsStub()); | 862 ASSERT(info()->IsStub()); |
858 __ Mov(__ Tmp1(), Operand(Smi::FromInt(StackFrame::STUB))); | 863 __ Mov(stub_marker, Operand(Smi::FromInt(StackFrame::STUB))); |
859 __ Push(lr, fp, cp, __ Tmp1()); | 864 __ Push(lr, fp, cp, stub_marker); |
860 __ Add(fp, __ StackPointer(), 2 * kPointerSize); | 865 __ Add(fp, __ StackPointer(), 2 * kPointerSize); |
861 __ Call(__ Tmp0()); | 866 __ Call(stub_deopt_entry); |
862 } | 867 } |
863 } else { | 868 } else { |
864 if (info()->saves_caller_doubles()) { | 869 if (info()->saves_caller_doubles()) { |
865 ASSERT(info()->IsStub()); | 870 ASSERT(info()->IsStub()); |
866 RestoreCallerDoubles(); | 871 RestoreCallerDoubles(); |
867 } | 872 } |
868 __ Call(entry, RelocInfo::RUNTIME_ENTRY); | 873 __ Call(entry, RelocInfo::RUNTIME_ENTRY); |
869 } | 874 } |
870 masm()->CheckConstPool(false, false); | 875 masm()->CheckConstPool(false, false); |
871 } | 876 } |
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5832 __ Bind(&out_of_object); | 5837 __ Bind(&out_of_object); |
5833 __ Ldr(result, FieldMemOperand(object, JSObject::kPropertiesOffset)); | 5838 __ Ldr(result, FieldMemOperand(object, JSObject::kPropertiesOffset)); |
5834 // Index is equal to negated out of object property index plus 1. | 5839 // Index is equal to negated out of object property index plus 1. |
5835 __ Sub(result, result, Operand::UntagSmiAndScale(index, kPointerSizeLog2)); | 5840 __ Sub(result, result, Operand::UntagSmiAndScale(index, kPointerSizeLog2)); |
5836 __ Ldr(result, FieldMemOperand(result, | 5841 __ Ldr(result, FieldMemOperand(result, |
5837 FixedArray::kHeaderSize - kPointerSize)); | 5842 FixedArray::kHeaderSize - kPointerSize)); |
5838 __ Bind(&done); | 5843 __ Bind(&done); |
5839 } | 5844 } |
5840 | 5845 |
5841 } } // namespace v8::internal | 5846 } } // namespace v8::internal |
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