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Implement new CPU detection using cpuid, cpuidex plan9 instructions from klauspost/cpuid project, remove C code

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Harshavardhana
2015-07-04 14:22:05 -07:00
parent 9977888972
commit aa67a19e99
10 changed files with 44 additions and 74 deletions
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pkg/cpu/cpu_amd64.s
+27
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// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
//
// See https://github.com/klauspost/cpuid/blob/master/LICENSE
//
// Using this inside Minio with modifications
//
// func cpuid(op uint32) (eax, ebx, ecx, edx uint32)
TEXT ·cpuid(SB),7,$0
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 cpuidex(op, op2 uint32) (eax, ebx, ecx, edx uint32)
TEXT ·cpuidex(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