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Diffstat (limited to 'src/internal/cpu/cpu_x86.s')
| -rw-r--r-- | src/internal/cpu/cpu_x86.s | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/internal/cpu/cpu_x86.s b/src/internal/cpu/cpu_x86.s new file mode 100644 index 0000000..2ee8eca --- /dev/null +++ b/src/internal/cpu/cpu_x86.s @@ -0,0 +1,43 @@ +// Copyright 2017 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build 386 || amd64 + +#include "textflag.h" + +// func cpuid(eaxArg, ecxArg uint32) (eax, ebx, ecx, edx uint32) +TEXT ·cpuid(SB), NOSPLIT, $0-24 + MOVL eaxArg+0(FP), AX + MOVL ecxArg+4(FP), CX + CPUID + MOVL AX, eax+8(FP) + MOVL BX, ebx+12(FP) + MOVL CX, ecx+16(FP) + MOVL DX, edx+20(FP) + RET + +// func xgetbv() (eax, edx uint32) +TEXT ·xgetbv(SB),NOSPLIT,$0-8 + MOVL $0, CX + XGETBV + MOVL AX, eax+0(FP) + MOVL DX, edx+4(FP) + RET + +// func getGOAMD64level() int32 +TEXT ·getGOAMD64level(SB),NOSPLIT,$0-4 +#ifdef GOAMD64_v4 + MOVL $4, ret+0(FP) +#else +#ifdef GOAMD64_v3 + MOVL $3, ret+0(FP) +#else +#ifdef GOAMD64_v2 + MOVL $2, ret+0(FP) +#else + MOVL $1, ret+0(FP) +#endif +#endif +#endif + RET |