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- // Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
- //+build amd64,!gccgo,!noasm,!appengine
- // func asmCpuid(op uint32) (eax, ebx, ecx, edx uint32)
- TEXT ·asmCpuid(SB), 7, $0
- XORQ CX, CX
- MOVL op+0(FP), AX
- CPUID
- MOVL AX, eax+8(FP)
- MOVL BX, ebx+12(FP)
- MOVL CX, ecx+16(FP)
- MOVL DX, edx+20(FP)
- RET
- // func asmCpuidex(op, op2 uint32) (eax, ebx, ecx, edx uint32)
- TEXT ·asmCpuidex(SB), 7, $0
- MOVL op+0(FP), AX
- MOVL op2+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 asmXgetbv(index uint32) (eax, edx uint32)
- TEXT ·asmXgetbv(SB), 7, $0
- MOVL index+0(FP), CX
- BYTE $0x0f; BYTE $0x01; BYTE $0xd0 // XGETBV
- MOVL AX, eax+8(FP)
- MOVL DX, edx+12(FP)
- RET
- // func asmRdtscpAsm() (eax, ebx, ecx, edx uint32)
- TEXT ·asmRdtscpAsm(SB), 7, $0
- BYTE $0x0F; BYTE $0x01; BYTE $0xF9 // RDTSCP
- MOVL AX, eax+0(FP)
- MOVL BX, ebx+4(FP)
- MOVL CX, ecx+8(FP)
- MOVL DX, edx+12(FP)
- RET
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