cpu_gccgo_x86.go

     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  }
    34
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