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7861aae155
Darwin doesn't save/restore the AVX-512 mask registers when processing a signal. Go generates lots of signals, which cause the mask registers to randomly get clobbered. Better to pretend that AVX-512 isn't supported. Update golang/go#49233 Change-Id: I0dda77a6f205e10eefccd82e6f4f0f184dae42d9 Reviewed-on: https://go-review.googlesource.com/c/sys/+/361255 Trust: Keith Randall <khr@golang.org> Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Martin Möhrmann <martin@golang.org>
29 lines
642 B
ArmAsm
29 lines
642 B
ArmAsm
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build (386 || amd64 || amd64p32) && gc
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// +build 386 amd64 amd64p32
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// +build gc
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#include "textflag.h"
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// func cpuid(eaxArg, ecxArg uint32) (eax, ebx, ecx, edx uint32)
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TEXT ·cpuid(SB), NOSPLIT, $0-24
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MOVL eaxArg+0(FP), AX
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MOVL ecxArg+4(FP), CX
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CPUID
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MOVL AX, eax+8(FP)
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MOVL BX, ebx+12(FP)
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MOVL CX, ecx+16(FP)
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MOVL DX, edx+20(FP)
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RET
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// func xgetbv() (eax, edx uint32)
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TEXT ·xgetbv(SB),NOSPLIT,$0-8
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MOVL $0, CX
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XGETBV
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MOVL AX, eax+0(FP)
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MOVL DX, edx+4(FP)
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RET
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