Source file src/cmd/dist/sys_windows.go

     1	// Copyright 2015 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	package main
     6	
     7	import (
     8		"syscall"
     9		"unsafe"
    10	)
    11	
    12	var (
    13		modkernel32       = syscall.NewLazyDLL("kernel32.dll")
    14		procGetSystemInfo = modkernel32.NewProc("GetSystemInfo")
    15	)
    16	
    17	// see https://msdn.microsoft.com/en-us/library/windows/desktop/ms724958(v=vs.85).aspx
    18	type systeminfo struct {
    19		wProcessorArchitecture      uint16
    20		wReserved                   uint16
    21		dwPageSize                  uint32
    22		lpMinimumApplicationAddress uintptr
    23		lpMaximumApplicationAddress uintptr
    24		dwActiveProcessorMask       uintptr
    25		dwNumberOfProcessors        uint32
    26		dwProcessorType             uint32
    27		dwAllocationGranularity     uint32
    28		wProcessorLevel             uint16
    29		wProcessorRevision          uint16
    30	}
    31	
    32	const (
    33		PROCESSOR_ARCHITECTURE_AMD64 = 9
    34		PROCESSOR_ARCHITECTURE_INTEL = 0
    35		PROCESSOR_ARCHITECTURE_ARM   = 5
    36	)
    37	
    38	var sysinfo systeminfo
    39	
    40	func sysinit() {
    41		syscall.Syscall(procGetSystemInfo.Addr(), 1, uintptr(unsafe.Pointer(&sysinfo)), 0, 0)
    42		switch sysinfo.wProcessorArchitecture {
    43		case PROCESSOR_ARCHITECTURE_AMD64:
    44			gohostarch = "amd64"
    45		case PROCESSOR_ARCHITECTURE_INTEL:
    46			gohostarch = "386"
    47		case PROCESSOR_ARCHITECTURE_ARM:
    48			gohostarch = "arm"
    49		default:
    50			fatalf("unknown processor architecture")
    51		}
    52	}
    53	

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