| // Copyright 2015 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package main |
| |
| import ( |
| "syscall" |
| "unsafe" |
| ) |
| |
| var ( |
| modkernel32 = syscall.NewLazyDLL("kernel32.dll") |
| procGetSystemInfo = modkernel32.NewProc("GetSystemInfo") |
| ) |
| |
| // see http://msdn.microsoft.com/en-us/library/windows/desktop/ms724958(v=vs.85).aspx |
| type systeminfo struct { |
| wProcessorArchitecture uint16 |
| wReserved uint16 |
| dwPageSize uint32 |
| lpMinimumApplicationAddress uintptr |
| lpMaximumApplicationAddress uintptr |
| dwActiveProcessorMask uintptr |
| dwNumberOfProcessors uint32 |
| dwProcessorType uint32 |
| dwAllocationGranularity uint32 |
| wProcessorLevel uint16 |
| wProcessorRevision uint16 |
| } |
| |
| const ( |
| PROCESSOR_ARCHITECTURE_AMD64 = 9 |
| PROCESSOR_ARCHITECTURE_INTEL = 0 |
| ) |
| |
| var sysinfo systeminfo |
| |
| func sysinit() { |
| syscall.Syscall(procGetSystemInfo.Addr(), 1, uintptr(unsafe.Pointer(&sysinfo)), 0, 0) |
| switch sysinfo.wProcessorArchitecture { |
| case PROCESSOR_ARCHITECTURE_AMD64: |
| gohostarch = "amd64" |
| case PROCESSOR_ARCHITECTURE_INTEL: |
| gohostarch = "386" |
| default: |
| fatal("unknown processor architecture") |
| } |
| } |