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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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5384 __ Mov(result, 0); | 5384 __ Mov(result, 0); |
5385 | 5385 |
5386 PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); | 5386 PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
5387 __ Push(string); | 5387 __ Push(string); |
5388 // Push the index as a smi. This is safe because of the checks in | 5388 // Push the index as a smi. This is safe because of the checks in |
5389 // DoStringCharCodeAt above. | 5389 // DoStringCharCodeAt above. |
5390 Register index = ToRegister(instr->index()); | 5390 Register index = ToRegister(instr->index()); |
5391 __ SmiTag(index); | 5391 __ SmiTag(index); |
5392 __ Push(index); | 5392 __ Push(index); |
5393 | 5393 |
5394 CallRuntimeFromDeferred(Runtime::kStringCharCodeAt, 2, instr, | 5394 CallRuntimeFromDeferred(Runtime::kHiddenStringCharCodeAt, 2, instr, |
5395 instr->context()); | 5395 instr->context()); |
5396 __ AssertSmi(x0); | 5396 __ AssertSmi(x0); |
5397 __ SmiUntag(x0); | 5397 __ SmiUntag(x0); |
5398 __ StoreToSafepointRegisterSlot(x0, result); | 5398 __ StoreToSafepointRegisterSlot(x0, result); |
5399 } | 5399 } |
5400 | 5400 |
5401 | 5401 |
5402 void LCodeGen::DoStringCharFromCode(LStringCharFromCode* instr) { | 5402 void LCodeGen::DoStringCharFromCode(LStringCharFromCode* instr) { |
5403 class DeferredStringCharFromCode: public LDeferredCode { | 5403 class DeferredStringCharFromCode: public LDeferredCode { |
5404 public: | 5404 public: |
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5873 __ Bind(&out_of_object); | 5873 __ Bind(&out_of_object); |
5874 __ Ldr(result, FieldMemOperand(object, JSObject::kPropertiesOffset)); | 5874 __ Ldr(result, FieldMemOperand(object, JSObject::kPropertiesOffset)); |
5875 // Index is equal to negated out of object property index plus 1. | 5875 // Index is equal to negated out of object property index plus 1. |
5876 __ Sub(result, result, Operand::UntagSmiAndScale(index, kPointerSizeLog2)); | 5876 __ Sub(result, result, Operand::UntagSmiAndScale(index, kPointerSizeLog2)); |
5877 __ Ldr(result, FieldMemOperand(result, | 5877 __ Ldr(result, FieldMemOperand(result, |
5878 FixedArray::kHeaderSize - kPointerSize)); | 5878 FixedArray::kHeaderSize - kPointerSize)); |
5879 __ Bind(&done); | 5879 __ Bind(&done); |
5880 } | 5880 } |
5881 | 5881 |
5882 } } // namespace v8::internal | 5882 } } // namespace v8::internal |
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