// Copyright 2015 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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package main
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import (
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"syscall"
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"unsafe"
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)
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var (
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modkernel32 = syscall.NewLazyDLL("kernel32.dll")
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procGetSystemInfo = modkernel32.NewProc("GetSystemInfo")
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)
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// see https://msdn.microsoft.com/en-us/library/windows/desktop/ms724958(v=vs.85).aspx
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type systeminfo struct {
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wProcessorArchitecture uint16
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wReserved uint16
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dwPageSize uint32
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lpMinimumApplicationAddress uintptr
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lpMaximumApplicationAddress uintptr
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dwActiveProcessorMask uintptr
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dwNumberOfProcessors uint32
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dwProcessorType uint32
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dwAllocationGranularity uint32
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wProcessorLevel uint16
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wProcessorRevision uint16
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}
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const (
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PROCESSOR_ARCHITECTURE_AMD64 = 9
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PROCESSOR_ARCHITECTURE_INTEL = 0
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PROCESSOR_ARCHITECTURE_ARM = 5
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)
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var sysinfo systeminfo
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func sysinit() {
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syscall.Syscall(procGetSystemInfo.Addr(), 1, uintptr(unsafe.Pointer(&sysinfo)), 0, 0)
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switch sysinfo.wProcessorArchitecture {
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case PROCESSOR_ARCHITECTURE_AMD64:
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gohostarch = "amd64"
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case PROCESSOR_ARCHITECTURE_INTEL:
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gohostarch = "386"
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case PROCESSOR_ARCHITECTURE_ARM:
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gohostarch = "arm"
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default:
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fatalf("unknown processor architecture")
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}
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}
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