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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 #if V8_TARGET_ARCH_X87 | 5 #if V8_TARGET_ARCH_X87 |
6 | 6 |
7 #include "src/code-factory.h" | 7 #include "src/code-factory.h" |
8 #include "src/codegen.h" | 8 #include "src/codegen.h" |
9 #include "src/deoptimizer.h" | 9 #include "src/deoptimizer.h" |
10 #include "src/full-codegen/full-codegen.h" | 10 #include "src/full-codegen/full-codegen.h" |
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1596 __ mov(ecx, FieldOperand(ecx, SharedFunctionInfo::kConstructStubOffset)); | 1596 __ mov(ecx, FieldOperand(ecx, SharedFunctionInfo::kConstructStubOffset)); |
1597 __ lea(ecx, FieldOperand(ecx, Code::kHeaderSize)); | 1597 __ lea(ecx, FieldOperand(ecx, Code::kHeaderSize)); |
1598 __ jmp(ecx); | 1598 __ jmp(ecx); |
1599 } | 1599 } |
1600 | 1600 |
1601 | 1601 |
1602 // static | 1602 // static |
1603 void Builtins::Generate_ConstructProxy(MacroAssembler* masm) { | 1603 void Builtins::Generate_ConstructProxy(MacroAssembler* masm) { |
1604 // ----------- S t a t e ------------- | 1604 // ----------- S t a t e ------------- |
1605 // -- eax : the number of arguments (not including the receiver) | 1605 // -- eax : the number of arguments (not including the receiver) |
| 1606 // -- edi : the constructor to call (checked to be a JSProxy) |
1606 // -- edx : the new target (either the same as the constructor or | 1607 // -- edx : the new target (either the same as the constructor or |
1607 // the JSFunction on which new was invoked initially) | 1608 // the JSFunction on which new was invoked initially) |
1608 // -- edi : the constructor to call (checked to be a JSProxy) | |
1609 // ----------------------------------- | 1609 // ----------------------------------- |
1610 | 1610 |
1611 // TODO(neis): This doesn't match the ES6 spec for [[Construct]] on proxies. | 1611 // Call into the Runtime for Proxy [[Construct]]. |
1612 __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); | 1612 __ PopReturnAddressTo(ecx); |
| 1613 __ Push(edi); |
| 1614 __ Push(edx); |
| 1615 __ PushReturnAddressFrom(ecx); |
| 1616 // Include the pushed new_target, constructor and the receiver. |
| 1617 __ add(eax, Immediate(3)); |
| 1618 // Tail-call to the runtime. |
| 1619 __ JumpToExternalReference( |
| 1620 ExternalReference(Runtime::kJSProxyConstruct, masm->isolate())); |
1613 } | 1621 } |
1614 | 1622 |
1615 | 1623 |
1616 // static | 1624 // static |
1617 void Builtins::Generate_Construct(MacroAssembler* masm) { | 1625 void Builtins::Generate_Construct(MacroAssembler* masm) { |
1618 // ----------- S t a t e ------------- | 1626 // ----------- S t a t e ------------- |
1619 // -- eax : the number of arguments (not including the receiver) | 1627 // -- eax : the number of arguments (not including the receiver) |
| 1628 // -- edi : the constructor to call (can be any Object) |
1620 // -- edx : the new target (either the same as the constructor or | 1629 // -- edx : the new target (either the same as the constructor or |
1621 // the JSFunction on which new was invoked initially) | 1630 // the JSFunction on which new was invoked initially) |
1622 // -- edi : the constructor to call (can be any Object) | |
1623 // ----------------------------------- | 1631 // ----------------------------------- |
1624 | 1632 |
1625 // Check if target is a Smi. | 1633 // Check if target is a Smi. |
1626 Label non_constructor; | 1634 Label non_constructor; |
1627 __ JumpIfSmi(edi, &non_constructor, Label::kNear); | 1635 __ JumpIfSmi(edi, &non_constructor, Label::kNear); |
1628 | 1636 |
1629 // Dispatch based on instance type. | 1637 // Dispatch based on instance type. |
1630 __ CmpObjectType(edi, JS_FUNCTION_TYPE, ecx); | 1638 __ CmpObjectType(edi, JS_FUNCTION_TYPE, ecx); |
1631 __ j(equal, masm->isolate()->builtins()->ConstructFunction(), | 1639 __ j(equal, masm->isolate()->builtins()->ConstructFunction(), |
1632 RelocInfo::CODE_TARGET); | 1640 RelocInfo::CODE_TARGET); |
1633 __ CmpInstanceType(ecx, JS_PROXY_TYPE); | |
1634 __ j(equal, masm->isolate()->builtins()->ConstructProxy(), | |
1635 RelocInfo::CODE_TARGET); | |
1636 | 1641 |
1637 // Check if target has a [[Construct]] internal method. | 1642 // Check if target has a [[Construct]] internal method. |
1638 __ test_b(FieldOperand(ecx, Map::kBitFieldOffset), 1 << Map::kIsConstructor); | 1643 __ test_b(FieldOperand(ecx, Map::kBitFieldOffset), 1 << Map::kIsConstructor); |
1639 __ j(zero, &non_constructor, Label::kNear); | 1644 __ j(zero, &non_constructor, Label::kNear); |
1640 | 1645 |
| 1646 // Only dispatch to proxies after checking whether they are constructors. |
| 1647 __ CmpInstanceType(ecx, JS_PROXY_TYPE); |
| 1648 __ j(equal, masm->isolate()->builtins()->ConstructProxy(), |
| 1649 RelocInfo::CODE_TARGET); |
| 1650 |
1641 // Called Construct on an exotic Object with a [[Construct]] internal method. | 1651 // Called Construct on an exotic Object with a [[Construct]] internal method. |
1642 { | 1652 { |
1643 // Overwrite the original receiver with the (original) target. | 1653 // Overwrite the original receiver with the (original) target. |
1644 __ mov(Operand(esp, eax, times_pointer_size, kPointerSize), edi); | 1654 __ mov(Operand(esp, eax, times_pointer_size, kPointerSize), edi); |
1645 // Let the "call_as_constructor_delegate" take care of the rest. | 1655 // Let the "call_as_constructor_delegate" take care of the rest. |
1646 __ LoadGlobalFunction(Context::CALL_AS_CONSTRUCTOR_DELEGATE_INDEX, edi); | 1656 __ LoadGlobalFunction(Context::CALL_AS_CONSTRUCTOR_DELEGATE_INDEX, edi); |
1647 __ Jump(masm->isolate()->builtins()->CallFunction(), | 1657 __ Jump(masm->isolate()->builtins()->CallFunction(), |
1648 RelocInfo::CODE_TARGET); | 1658 RelocInfo::CODE_TARGET); |
1649 } | 1659 } |
1650 | 1660 |
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1966 | 1976 |
1967 __ bind(&ok); | 1977 __ bind(&ok); |
1968 __ ret(0); | 1978 __ ret(0); |
1969 } | 1979 } |
1970 | 1980 |
1971 #undef __ | 1981 #undef __ |
1972 } // namespace internal | 1982 } // namespace internal |
1973 } // namespace v8 | 1983 } // namespace v8 |
1974 | 1984 |
1975 #endif // V8_TARGET_ARCH_X87 | 1985 #endif // V8_TARGET_ARCH_X87 |
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