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 5package runtime 6 7import "unsafe" 8 9//go:nosplit 10func cputicks() int64 { 11 var counter int64 12 stdcall1(_QueryPerformanceCounter, uintptr(unsafe.Pointer(&counter))) 13 return counter 14} 15 16func checkgoarm() { 17 if goarm < 7 { 18 print("Need atomic synchronization instructions, coprocessor ", 19 "access instructions. Recompile using GOARM=7.\n") 20 exit(1) 21 } 22} 23