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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/x64/assembler-x64.h" | 5 #include "src/x64/assembler-x64.h" |
6 | 6 |
7 #include <cstring> | 7 #include <cstring> |
8 | 8 |
9 #if V8_TARGET_ARCH_X64 | 9 #if V8_TARGET_ARCH_X64 |
10 | 10 |
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827 | 827 |
828 | 828 |
829 void Assembler::bsfq(Register dst, const Operand& src) { | 829 void Assembler::bsfq(Register dst, const Operand& src) { |
830 EnsureSpace ensure_space(this); | 830 EnsureSpace ensure_space(this); |
831 emit_rex_64(dst, src); | 831 emit_rex_64(dst, src); |
832 emit(0x0F); | 832 emit(0x0F); |
833 emit(0xBC); | 833 emit(0xBC); |
834 emit_operand(dst, src); | 834 emit_operand(dst, src); |
835 } | 835 } |
836 | 836 |
837 void Assembler::pshufw(XMMRegister dst, XMMRegister src, uint8_t shuffle) { | |
838 EnsureSpace ensure_space(this); | |
839 emit_optional_rex_32(dst, src); | |
840 emit(0x0F); | |
841 emit(0x70); | |
842 emit(0xC0 | (dst.low_bits() << 3) | src.low_bits()); | |
843 emit(shuffle); | |
844 } | |
845 | |
846 void Assembler::pshufw(XMMRegister dst, const Operand& src, uint8_t shuffle) { | |
847 EnsureSpace ensure_space(this); | |
848 emit_optional_rex_32(dst, src); | |
849 emit(0x0F); | |
850 emit(0x70); | |
851 emit_operand(dst.code(), src); | |
852 emit(shuffle); | |
853 } | |
837 | 854 |
838 void Assembler::call(Label* L) { | 855 void Assembler::call(Label* L) { |
839 EnsureSpace ensure_space(this); | 856 EnsureSpace ensure_space(this); |
840 // 1110 1000 #32-bit disp. | 857 // 1110 1000 #32-bit disp. |
841 emit(0xE8); | 858 emit(0xE8); |
842 if (L->is_bound()) { | 859 if (L->is_bound()) { |
843 int offset = L->pos() - pc_offset() - sizeof(int32_t); | 860 int offset = L->pos() - pc_offset() - sizeof(int32_t); |
844 DCHECK(offset <= 0); | 861 DCHECK(offset <= 0); |
845 emitl(offset); | 862 emitl(offset); |
846 } else if (L->is_linked()) { | 863 } else if (L->is_linked()) { |
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2864 EnsureSpace ensure_space(this); | 2881 EnsureSpace ensure_space(this); |
2865 emit(0x66); | 2882 emit(0x66); |
2866 emit_optional_rex_32(dst, src); | 2883 emit_optional_rex_32(dst, src); |
2867 emit(0x0F); | 2884 emit(0x0F); |
2868 emit(0xC4); | 2885 emit(0xC4); |
2869 emit_sse_operand(dst, src); | 2886 emit_sse_operand(dst, src); |
2870 emit(imm8); | 2887 emit(imm8); |
2871 } | 2888 } |
2872 | 2889 |
2873 void Assembler::pextrw(Register dst, XMMRegister src, int8_t imm8) { | 2890 void Assembler::pextrw(Register dst, XMMRegister src, int8_t imm8) { |
2891 DCHECK(IsEnabled(SSE4_1)); | |
2874 DCHECK(is_uint8(imm8)); | 2892 DCHECK(is_uint8(imm8)); |
bbudge
2017/03/22 19:17:05
If I'm reading the docs correctly, this could be e
gdeepti
2017/03/22 20:45:34
A agree that this check could be stronger, but I'm
bbudge
2017/03/22 21:09:40
OK
| |
2875 EnsureSpace ensure_space(this); | 2893 EnsureSpace ensure_space(this); |
2876 emit(0x66); | 2894 emit(0x66); |
2877 emit_optional_rex_32(src, dst); | 2895 emit_optional_rex_32(dst, src); |
2878 emit(0x0F); | 2896 emit(0x0F); |
2879 emit(0xC5); | 2897 emit(0x3A); |
2880 emit_sse_operand(src, dst); | 2898 emit(0x15); |
2899 emit_sse_operand(dst, src); | |
2881 emit(imm8); | 2900 emit(imm8); |
2882 } | 2901 } |
2883 | 2902 |
2884 void Assembler::pextrw(const Operand& dst, XMMRegister src, int8_t imm8) { | 2903 void Assembler::pextrw(const Operand& dst, XMMRegister src, int8_t imm8) { |
2885 DCHECK(IsEnabled(SSE4_1)); | 2904 DCHECK(IsEnabled(SSE4_1)); |
2886 DCHECK(is_uint8(imm8)); | 2905 DCHECK(is_uint8(imm8)); |
2887 EnsureSpace ensure_space(this); | 2906 EnsureSpace ensure_space(this); |
2888 emit(0x66); | 2907 emit(0x66); |
2889 emit_optional_rex_32(src, dst); | 2908 emit_optional_rex_32(src, dst); |
2890 emit(0x0F); | 2909 emit(0x0F); |
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4747 | 4766 |
4748 bool RelocInfo::IsInConstantPool() { | 4767 bool RelocInfo::IsInConstantPool() { |
4749 return false; | 4768 return false; |
4750 } | 4769 } |
4751 | 4770 |
4752 | 4771 |
4753 } // namespace internal | 4772 } // namespace internal |
4754 } // namespace v8 | 4773 } // namespace v8 |
4755 | 4774 |
4756 #endif // V8_TARGET_ARCH_X64 | 4775 #endif // V8_TARGET_ARCH_X64 |
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