github.com/neonyo/sys@v0.0.0-20230720094341-b1ee14be3ce8/cpu/cpu_gccgo_x86.go (about) 1 // Copyright 2018 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 //go:build (386 || amd64 || amd64p32) && gccgo 6 // +build 386 amd64 amd64p32 7 // +build gccgo 8 9 package cpu 10 11 //extern gccgoGetCpuidCount 12 func gccgoGetCpuidCount(eaxArg, ecxArg uint32, eax, ebx, ecx, edx *uint32) 13 14 func cpuid(eaxArg, ecxArg uint32) (eax, ebx, ecx, edx uint32) { 15 var a, b, c, d uint32 16 gccgoGetCpuidCount(eaxArg, ecxArg, &a, &b, &c, &d) 17 return a, b, c, d 18 } 19 20 //extern gccgoXgetbv 21 func gccgoXgetbv(eax, edx *uint32) 22 23 func xgetbv() (eax, edx uint32) { 24 var a, d uint32 25 gccgoXgetbv(&a, &d) 26 return a, d 27 } 28 29 // gccgo doesn't build on Darwin, per: 30 // https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/gcc.rb#L76 31 func darwinSupportsAVX512() bool { 32 return false 33 }