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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_X87 | 7 #if V8_TARGET_ARCH_X87 |
8 | 8 |
9 #include "src/base/bits.h" | 9 #include "src/base/bits.h" |
10 #include "src/code-factory.h" | 10 #include "src/code-factory.h" |
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3565 | 3565 |
3566 | 3566 |
3567 void LCodeGen::DoWrapReceiver(LWrapReceiver* instr) { | 3567 void LCodeGen::DoWrapReceiver(LWrapReceiver* instr) { |
3568 Register receiver = ToRegister(instr->receiver()); | 3568 Register receiver = ToRegister(instr->receiver()); |
3569 Register function = ToRegister(instr->function()); | 3569 Register function = ToRegister(instr->function()); |
3570 | 3570 |
3571 // If the receiver is null or undefined, we have to pass the global | 3571 // If the receiver is null or undefined, we have to pass the global |
3572 // object as a receiver to normal functions. Values have to be | 3572 // object as a receiver to normal functions. Values have to be |
3573 // passed unchanged to builtins and strict-mode functions. | 3573 // passed unchanged to builtins and strict-mode functions. |
3574 Label receiver_ok, global_object; | 3574 Label receiver_ok, global_object; |
3575 Label::Distance dist = DeoptEveryNTimes() ? Label::kFar : Label::kNear; | |
3576 Register scratch = ToRegister(instr->temp()); | 3575 Register scratch = ToRegister(instr->temp()); |
3577 | 3576 |
3578 if (!instr->hydrogen()->known_function()) { | 3577 if (!instr->hydrogen()->known_function()) { |
3579 // Do not transform the receiver to object for strict mode | 3578 // Do not transform the receiver to object for strict mode |
3580 // functions. | 3579 // functions. |
3581 __ mov(scratch, | 3580 __ mov(scratch, |
3582 FieldOperand(function, JSFunction::kSharedFunctionInfoOffset)); | 3581 FieldOperand(function, JSFunction::kSharedFunctionInfoOffset)); |
3583 __ test_b(FieldOperand(scratch, SharedFunctionInfo::kStrictModeByteOffset), | 3582 __ test_b(FieldOperand(scratch, SharedFunctionInfo::kStrictModeByteOffset), |
3584 1 << SharedFunctionInfo::kStrictModeBitWithinByte); | 3583 1 << SharedFunctionInfo::kStrictModeBitWithinByte); |
3585 __ j(not_equal, &receiver_ok, dist); | 3584 __ j(not_equal, &receiver_ok); |
3586 | 3585 |
3587 // Do not transform the receiver to object for builtins. | 3586 // Do not transform the receiver to object for builtins. |
3588 __ test_b(FieldOperand(scratch, SharedFunctionInfo::kNativeByteOffset), | 3587 __ test_b(FieldOperand(scratch, SharedFunctionInfo::kNativeByteOffset), |
3589 1 << SharedFunctionInfo::kNativeBitWithinByte); | 3588 1 << SharedFunctionInfo::kNativeBitWithinByte); |
3590 __ j(not_equal, &receiver_ok, dist); | 3589 __ j(not_equal, &receiver_ok); |
3591 } | 3590 } |
3592 | 3591 |
3593 // Normal function. Replace undefined or null with global receiver. | 3592 // Normal function. Replace undefined or null with global receiver. |
3594 __ cmp(receiver, factory()->null_value()); | 3593 __ cmp(receiver, factory()->null_value()); |
3595 __ j(equal, &global_object, Label::kNear); | 3594 __ j(equal, &global_object); |
3596 __ cmp(receiver, factory()->undefined_value()); | 3595 __ cmp(receiver, factory()->undefined_value()); |
3597 __ j(equal, &global_object, Label::kNear); | 3596 __ j(equal, &global_object); |
3598 | 3597 |
3599 // The receiver should be a JS object. | 3598 // The receiver should be a JS object. |
3600 __ test(receiver, Immediate(kSmiTagMask)); | 3599 __ test(receiver, Immediate(kSmiTagMask)); |
3601 DeoptimizeIf(equal, instr, Deoptimizer::kSmi); | 3600 DeoptimizeIf(equal, instr, Deoptimizer::kSmi); |
3602 __ CmpObjectType(receiver, FIRST_SPEC_OBJECT_TYPE, scratch); | 3601 __ CmpObjectType(receiver, FIRST_SPEC_OBJECT_TYPE, scratch); |
3603 DeoptimizeIf(below, instr, Deoptimizer::kNotAJavaScriptObject); | 3602 DeoptimizeIf(below, instr, Deoptimizer::kNotAJavaScriptObject); |
3604 | 3603 |
3605 __ jmp(&receiver_ok, Label::kNear); | 3604 __ jmp(&receiver_ok, Label::kNear); |
3606 __ bind(&global_object); | 3605 __ bind(&global_object); |
3607 __ mov(receiver, FieldOperand(function, JSFunction::kContextOffset)); | 3606 __ mov(receiver, FieldOperand(function, JSFunction::kContextOffset)); |
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6371 CallRuntime(Runtime::kPushBlockContext, 2, instr); | 6370 CallRuntime(Runtime::kPushBlockContext, 2, instr); |
6372 RecordSafepoint(Safepoint::kNoLazyDeopt); | 6371 RecordSafepoint(Safepoint::kNoLazyDeopt); |
6373 } | 6372 } |
6374 | 6373 |
6375 | 6374 |
6376 #undef __ | 6375 #undef __ |
6377 | 6376 |
6378 } } // namespace v8::internal | 6377 } } // namespace v8::internal |
6379 | 6378 |
6380 #endif // V8_TARGET_ARCH_X87 | 6379 #endif // V8_TARGET_ARCH_X87 |
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