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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_MIPS | 7 #if V8_TARGET_ARCH_MIPS |
| 8 | 8 |
| 9 #include "src/bootstrapper.h" | 9 #include "src/bootstrapper.h" |
| 10 #include "src/code-stubs.h" | 10 #include "src/code-stubs.h" |
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| 735 | 735 |
| 736 // On entry a1 and a2 are the values to be compared. | 736 // On entry a1 and a2 are the values to be compared. |
| 737 // On exit a0 is 0, positive or negative to indicate the result of | 737 // On exit a0 is 0, positive or negative to indicate the result of |
| 738 // the comparison. | 738 // the comparison. |
| 739 void ICCompareStub::GenerateGeneric(MacroAssembler* masm) { | 739 void ICCompareStub::GenerateGeneric(MacroAssembler* masm) { |
| 740 Register lhs = a1; | 740 Register lhs = a1; |
| 741 Register rhs = a0; | 741 Register rhs = a0; |
| 742 Condition cc = GetCondition(); | 742 Condition cc = GetCondition(); |
| 743 | 743 |
| 744 Label miss; | 744 Label miss; |
| 745 ICCompareStub_CheckInputType(masm, lhs, a2, left_, &miss); | 745 ICCompareStub_CheckInputType(masm, lhs, a2, left(), &miss); |
| 746 ICCompareStub_CheckInputType(masm, rhs, a3, right_, &miss); | 746 ICCompareStub_CheckInputType(masm, rhs, a3, right(), &miss); |
| 747 | 747 |
| 748 Label slow; // Call builtin. | 748 Label slow; // Call builtin. |
| 749 Label not_smis, both_loaded_as_doubles; | 749 Label not_smis, both_loaded_as_doubles; |
| 750 | 750 |
| 751 Label not_two_smis, smi_done; | 751 Label not_two_smis, smi_done; |
| 752 __ Or(a2, a1, a0); | 752 __ Or(a2, a1, a0); |
| 753 __ JumpIfNotSmi(a2, ¬_two_smis); | 753 __ JumpIfNotSmi(a2, ¬_two_smis); |
| 754 __ sra(a1, a1, 1); | 754 __ sra(a1, a1, 1); |
| 755 __ sra(a0, a0, 1); | 755 __ sra(a0, a0, 1); |
| 756 __ Ret(USE_DELAY_SLOT); | 756 __ Ret(USE_DELAY_SLOT); |
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| 3641 } | 3641 } |
| 3642 | 3642 |
| 3643 // Tail call into the stub that handles binary operations with allocation | 3643 // Tail call into the stub that handles binary operations with allocation |
| 3644 // sites. | 3644 // sites. |
| 3645 BinaryOpWithAllocationSiteStub stub(isolate(), state()); | 3645 BinaryOpWithAllocationSiteStub stub(isolate(), state()); |
| 3646 __ TailCallStub(&stub); | 3646 __ TailCallStub(&stub); |
| 3647 } | 3647 } |
| 3648 | 3648 |
| 3649 | 3649 |
| 3650 void ICCompareStub::GenerateSmis(MacroAssembler* masm) { | 3650 void ICCompareStub::GenerateSmis(MacroAssembler* masm) { |
| 3651 DCHECK(state_ == CompareIC::SMI); | 3651 DCHECK(state() == CompareIC::SMI); |
| 3652 Label miss; | 3652 Label miss; |
| 3653 __ Or(a2, a1, a0); | 3653 __ Or(a2, a1, a0); |
| 3654 __ JumpIfNotSmi(a2, &miss); | 3654 __ JumpIfNotSmi(a2, &miss); |
| 3655 | 3655 |
| 3656 if (GetCondition() == eq) { | 3656 if (GetCondition() == eq) { |
| 3657 // For equality we do not care about the sign of the result. | 3657 // For equality we do not care about the sign of the result. |
| 3658 __ Ret(USE_DELAY_SLOT); | 3658 __ Ret(USE_DELAY_SLOT); |
| 3659 __ Subu(v0, a0, a1); | 3659 __ Subu(v0, a0, a1); |
| 3660 } else { | 3660 } else { |
| 3661 // Untag before subtracting to avoid handling overflow. | 3661 // Untag before subtracting to avoid handling overflow. |
| 3662 __ SmiUntag(a1); | 3662 __ SmiUntag(a1); |
| 3663 __ SmiUntag(a0); | 3663 __ SmiUntag(a0); |
| 3664 __ Ret(USE_DELAY_SLOT); | 3664 __ Ret(USE_DELAY_SLOT); |
| 3665 __ Subu(v0, a1, a0); | 3665 __ Subu(v0, a1, a0); |
| 3666 } | 3666 } |
| 3667 | 3667 |
| 3668 __ bind(&miss); | 3668 __ bind(&miss); |
| 3669 GenerateMiss(masm); | 3669 GenerateMiss(masm); |
| 3670 } | 3670 } |
| 3671 | 3671 |
| 3672 | 3672 |
| 3673 void ICCompareStub::GenerateNumbers(MacroAssembler* masm) { | 3673 void ICCompareStub::GenerateNumbers(MacroAssembler* masm) { |
| 3674 DCHECK(state_ == CompareIC::NUMBER); | 3674 DCHECK(state() == CompareIC::NUMBER); |
| 3675 | 3675 |
| 3676 Label generic_stub; | 3676 Label generic_stub; |
| 3677 Label unordered, maybe_undefined1, maybe_undefined2; | 3677 Label unordered, maybe_undefined1, maybe_undefined2; |
| 3678 Label miss; | 3678 Label miss; |
| 3679 | 3679 |
| 3680 if (left_ == CompareIC::SMI) { | 3680 if (left() == CompareIC::SMI) { |
| 3681 __ JumpIfNotSmi(a1, &miss); | 3681 __ JumpIfNotSmi(a1, &miss); |
| 3682 } | 3682 } |
| 3683 if (right_ == CompareIC::SMI) { | 3683 if (right() == CompareIC::SMI) { |
| 3684 __ JumpIfNotSmi(a0, &miss); | 3684 __ JumpIfNotSmi(a0, &miss); |
| 3685 } | 3685 } |
| 3686 | 3686 |
| 3687 // Inlining the double comparison and falling back to the general compare | 3687 // Inlining the double comparison and falling back to the general compare |
| 3688 // stub if NaN is involved. | 3688 // stub if NaN is involved. |
| 3689 // Load left and right operand. | 3689 // Load left and right operand. |
| 3690 Label done, left, left_smi, right_smi; | 3690 Label done, left, left_smi, right_smi; |
| 3691 __ JumpIfSmi(a0, &right_smi); | 3691 __ JumpIfSmi(a0, &right_smi); |
| 3692 __ CheckMap(a0, a2, Heap::kHeapNumberMapRootIndex, &maybe_undefined1, | 3692 __ CheckMap(a0, a2, Heap::kHeapNumberMapRootIndex, &maybe_undefined1, |
| 3693 DONT_DO_SMI_CHECK); | 3693 DONT_DO_SMI_CHECK); |
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| 3731 __ bind(&fpu_eq); | 3731 __ bind(&fpu_eq); |
| 3732 __ Ret(USE_DELAY_SLOT); | 3732 __ Ret(USE_DELAY_SLOT); |
| 3733 __ li(v0, Operand(EQUAL)); | 3733 __ li(v0, Operand(EQUAL)); |
| 3734 | 3734 |
| 3735 __ bind(&fpu_lt); | 3735 __ bind(&fpu_lt); |
| 3736 __ Ret(USE_DELAY_SLOT); | 3736 __ Ret(USE_DELAY_SLOT); |
| 3737 __ li(v0, Operand(LESS)); | 3737 __ li(v0, Operand(LESS)); |
| 3738 | 3738 |
| 3739 __ bind(&unordered); | 3739 __ bind(&unordered); |
| 3740 __ bind(&generic_stub); | 3740 __ bind(&generic_stub); |
| 3741 ICCompareStub stub(isolate(), op_, CompareIC::GENERIC, CompareIC::GENERIC, | 3741 ICCompareStub stub(isolate(), op(), CompareIC::GENERIC, CompareIC::GENERIC, |
| 3742 CompareIC::GENERIC); | 3742 CompareIC::GENERIC); |
| 3743 __ Jump(stub.GetCode(), RelocInfo::CODE_TARGET); | 3743 __ Jump(stub.GetCode(), RelocInfo::CODE_TARGET); |
| 3744 | 3744 |
| 3745 __ bind(&maybe_undefined1); | 3745 __ bind(&maybe_undefined1); |
| 3746 if (Token::IsOrderedRelationalCompareOp(op_)) { | 3746 if (Token::IsOrderedRelationalCompareOp(op())) { |
| 3747 __ LoadRoot(at, Heap::kUndefinedValueRootIndex); | 3747 __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| 3748 __ Branch(&miss, ne, a0, Operand(at)); | 3748 __ Branch(&miss, ne, a0, Operand(at)); |
| 3749 __ JumpIfSmi(a1, &unordered); | 3749 __ JumpIfSmi(a1, &unordered); |
| 3750 __ GetObjectType(a1, a2, a2); | 3750 __ GetObjectType(a1, a2, a2); |
| 3751 __ Branch(&maybe_undefined2, ne, a2, Operand(HEAP_NUMBER_TYPE)); | 3751 __ Branch(&maybe_undefined2, ne, a2, Operand(HEAP_NUMBER_TYPE)); |
| 3752 __ jmp(&unordered); | 3752 __ jmp(&unordered); |
| 3753 } | 3753 } |
| 3754 | 3754 |
| 3755 __ bind(&maybe_undefined2); | 3755 __ bind(&maybe_undefined2); |
| 3756 if (Token::IsOrderedRelationalCompareOp(op_)) { | 3756 if (Token::IsOrderedRelationalCompareOp(op())) { |
| 3757 __ LoadRoot(at, Heap::kUndefinedValueRootIndex); | 3757 __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| 3758 __ Branch(&unordered, eq, a1, Operand(at)); | 3758 __ Branch(&unordered, eq, a1, Operand(at)); |
| 3759 } | 3759 } |
| 3760 | 3760 |
| 3761 __ bind(&miss); | 3761 __ bind(&miss); |
| 3762 GenerateMiss(masm); | 3762 GenerateMiss(masm); |
| 3763 } | 3763 } |
| 3764 | 3764 |
| 3765 | 3765 |
| 3766 void ICCompareStub::GenerateInternalizedStrings(MacroAssembler* masm) { | 3766 void ICCompareStub::GenerateInternalizedStrings(MacroAssembler* masm) { |
| 3767 DCHECK(state_ == CompareIC::INTERNALIZED_STRING); | 3767 DCHECK(state() == CompareIC::INTERNALIZED_STRING); |
| 3768 Label miss; | 3768 Label miss; |
| 3769 | 3769 |
| 3770 // Registers containing left and right operands respectively. | 3770 // Registers containing left and right operands respectively. |
| 3771 Register left = a1; | 3771 Register left = a1; |
| 3772 Register right = a0; | 3772 Register right = a0; |
| 3773 Register tmp1 = a2; | 3773 Register tmp1 = a2; |
| 3774 Register tmp2 = a3; | 3774 Register tmp2 = a3; |
| 3775 | 3775 |
| 3776 // Check that both operands are heap objects. | 3776 // Check that both operands are heap objects. |
| 3777 __ JumpIfEitherSmi(left, right, &miss); | 3777 __ JumpIfEitherSmi(left, right, &miss); |
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| 3797 DCHECK(is_int16(EQUAL)); | 3797 DCHECK(is_int16(EQUAL)); |
| 3798 __ Ret(USE_DELAY_SLOT); | 3798 __ Ret(USE_DELAY_SLOT); |
| 3799 __ li(v0, Operand(Smi::FromInt(EQUAL))); | 3799 __ li(v0, Operand(Smi::FromInt(EQUAL))); |
| 3800 | 3800 |
| 3801 __ bind(&miss); | 3801 __ bind(&miss); |
| 3802 GenerateMiss(masm); | 3802 GenerateMiss(masm); |
| 3803 } | 3803 } |
| 3804 | 3804 |
| 3805 | 3805 |
| 3806 void ICCompareStub::GenerateUniqueNames(MacroAssembler* masm) { | 3806 void ICCompareStub::GenerateUniqueNames(MacroAssembler* masm) { |
| 3807 DCHECK(state_ == CompareIC::UNIQUE_NAME); | 3807 DCHECK(state() == CompareIC::UNIQUE_NAME); |
| 3808 DCHECK(GetCondition() == eq); | 3808 DCHECK(GetCondition() == eq); |
| 3809 Label miss; | 3809 Label miss; |
| 3810 | 3810 |
| 3811 // Registers containing left and right operands respectively. | 3811 // Registers containing left and right operands respectively. |
| 3812 Register left = a1; | 3812 Register left = a1; |
| 3813 Register right = a0; | 3813 Register right = a0; |
| 3814 Register tmp1 = a2; | 3814 Register tmp1 = a2; |
| 3815 Register tmp2 = a3; | 3815 Register tmp2 = a3; |
| 3816 | 3816 |
| 3817 // Check that both operands are heap objects. | 3817 // Check that both operands are heap objects. |
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| 3841 __ li(v0, Operand(Smi::FromInt(EQUAL))); | 3841 __ li(v0, Operand(Smi::FromInt(EQUAL))); |
| 3842 __ bind(&done); | 3842 __ bind(&done); |
| 3843 __ Ret(); | 3843 __ Ret(); |
| 3844 | 3844 |
| 3845 __ bind(&miss); | 3845 __ bind(&miss); |
| 3846 GenerateMiss(masm); | 3846 GenerateMiss(masm); |
| 3847 } | 3847 } |
| 3848 | 3848 |
| 3849 | 3849 |
| 3850 void ICCompareStub::GenerateStrings(MacroAssembler* masm) { | 3850 void ICCompareStub::GenerateStrings(MacroAssembler* masm) { |
| 3851 DCHECK(state_ == CompareIC::STRING); | 3851 DCHECK(state() == CompareIC::STRING); |
| 3852 Label miss; | 3852 Label miss; |
| 3853 | 3853 |
| 3854 bool equality = Token::IsEqualityOp(op_); | 3854 bool equality = Token::IsEqualityOp(op()); |
| 3855 | 3855 |
| 3856 // Registers containing left and right operands respectively. | 3856 // Registers containing left and right operands respectively. |
| 3857 Register left = a1; | 3857 Register left = a1; |
| 3858 Register right = a0; | 3858 Register right = a0; |
| 3859 Register tmp1 = a2; | 3859 Register tmp1 = a2; |
| 3860 Register tmp2 = a3; | 3860 Register tmp2 = a3; |
| 3861 Register tmp3 = t0; | 3861 Register tmp3 = t0; |
| 3862 Register tmp4 = t1; | 3862 Register tmp4 = t1; |
| 3863 Register tmp5 = t2; | 3863 Register tmp5 = t2; |
| 3864 | 3864 |
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| 3927 } else { | 3927 } else { |
| 3928 __ TailCallRuntime(Runtime::kStringCompare, 2, 1); | 3928 __ TailCallRuntime(Runtime::kStringCompare, 2, 1); |
| 3929 } | 3929 } |
| 3930 | 3930 |
| 3931 __ bind(&miss); | 3931 __ bind(&miss); |
| 3932 GenerateMiss(masm); | 3932 GenerateMiss(masm); |
| 3933 } | 3933 } |
| 3934 | 3934 |
| 3935 | 3935 |
| 3936 void ICCompareStub::GenerateObjects(MacroAssembler* masm) { | 3936 void ICCompareStub::GenerateObjects(MacroAssembler* masm) { |
| 3937 DCHECK(state_ == CompareIC::OBJECT); | 3937 DCHECK(state() == CompareIC::OBJECT); |
| 3938 Label miss; | 3938 Label miss; |
| 3939 __ And(a2, a1, Operand(a0)); | 3939 __ And(a2, a1, Operand(a0)); |
| 3940 __ JumpIfSmi(a2, &miss); | 3940 __ JumpIfSmi(a2, &miss); |
| 3941 | 3941 |
| 3942 __ GetObjectType(a0, a2, a2); | 3942 __ GetObjectType(a0, a2, a2); |
| 3943 __ Branch(&miss, ne, a2, Operand(JS_OBJECT_TYPE)); | 3943 __ Branch(&miss, ne, a2, Operand(JS_OBJECT_TYPE)); |
| 3944 __ GetObjectType(a1, a2, a2); | 3944 __ GetObjectType(a1, a2, a2); |
| 3945 __ Branch(&miss, ne, a2, Operand(JS_OBJECT_TYPE)); | 3945 __ Branch(&miss, ne, a2, Operand(JS_OBJECT_TYPE)); |
| 3946 | 3946 |
| 3947 DCHECK(GetCondition() == eq); | 3947 DCHECK(GetCondition() == eq); |
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| 3971 | 3971 |
| 3972 | 3972 |
| 3973 void ICCompareStub::GenerateMiss(MacroAssembler* masm) { | 3973 void ICCompareStub::GenerateMiss(MacroAssembler* masm) { |
| 3974 { | 3974 { |
| 3975 // Call the runtime system in a fresh internal frame. | 3975 // Call the runtime system in a fresh internal frame. |
| 3976 ExternalReference miss = | 3976 ExternalReference miss = |
| 3977 ExternalReference(IC_Utility(IC::kCompareIC_Miss), isolate()); | 3977 ExternalReference(IC_Utility(IC::kCompareIC_Miss), isolate()); |
| 3978 FrameScope scope(masm, StackFrame::INTERNAL); | 3978 FrameScope scope(masm, StackFrame::INTERNAL); |
| 3979 __ Push(a1, a0); | 3979 __ Push(a1, a0); |
| 3980 __ Push(ra, a1, a0); | 3980 __ Push(ra, a1, a0); |
| 3981 __ li(t0, Operand(Smi::FromInt(op_))); | 3981 __ li(t0, Operand(Smi::FromInt(op()))); |
| 3982 __ addiu(sp, sp, -kPointerSize); | 3982 __ addiu(sp, sp, -kPointerSize); |
| 3983 __ CallExternalReference(miss, 3, USE_DELAY_SLOT); | 3983 __ CallExternalReference(miss, 3, USE_DELAY_SLOT); |
| 3984 __ sw(t0, MemOperand(sp)); // In the delay slot. | 3984 __ sw(t0, MemOperand(sp)); // In the delay slot. |
| 3985 // Compute the entry point of the rewritten stub. | 3985 // Compute the entry point of the rewritten stub. |
| 3986 __ Addu(a2, v0, Operand(Code::kHeaderSize - kHeapObjectTag)); | 3986 __ Addu(a2, v0, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 3987 // Restore registers. | 3987 // Restore registers. |
| 3988 __ Pop(a1, a0, ra); | 3988 __ Pop(a1, a0, ra); |
| 3989 } | 3989 } |
| 3990 __ Jump(a2); | 3990 __ Jump(a2); |
| 3991 } | 3991 } |
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| 5064 MemOperand(fp, 6 * kPointerSize), | 5064 MemOperand(fp, 6 * kPointerSize), |
| 5065 NULL); | 5065 NULL); |
| 5066 } | 5066 } |
| 5067 | 5067 |
| 5068 | 5068 |
| 5069 #undef __ | 5069 #undef __ |
| 5070 | 5070 |
| 5071 } } // namespace v8::internal | 5071 } } // namespace v8::internal |
| 5072 | 5072 |
| 5073 #endif // V8_TARGET_ARCH_MIPS | 5073 #endif // V8_TARGET_ARCH_MIPS |
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