mirror of
https://github.com/golang/go
synced 2024-11-19 15:54:46 -07:00
29 lines
918 B
Go
29 lines
918 B
Go
|
// Copyright 2013 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 runtime
|
||
|
|
|
||
|
|
import "unsafe"
|
||
|
|
|
||
|
|
func lwp_mcontext_init(mc *mcontextt, stk unsafe.Pointer, mp *m, gp *g, fn uintptr) {
|
||
|
|
// Machine dependent mcontext initialisation for LWP.
|
||
|
|
mc.__gregs[_REG_R15] = uint32(funcPC(lwp_tramp))
|
||
|
|
mc.__gregs[_REG_R13] = uint32(uintptr(stk))
|
||
|
|
mc.__gregs[_REG_R0] = uint32(uintptr(unsafe.Pointer(mp)))
|
||
|
|
mc.__gregs[_REG_R1] = uint32(uintptr(unsafe.Pointer(gp)))
|
||
|
|
mc.__gregs[_REG_R2] = uint32(fn)
|
||
|
|
}
|
||
|
|
|
||
|
|
func checkgoarm() {
|
||
|
|
// TODO(minux)
|
||
|
|
}
|
||
|
|
|
||
|
|
//go:nosplit
|
||
|
|
func cputicks() int64 {
|
||
|
|
// Currently cputicks() is used in blocking profiler and to seed runtime·fastrand1().
|
||
|
|
// runtime·nanotime() is a poor approximation of CPU ticks that is enough for the profiler.
|
||
|
|
// TODO: need more entropy to better seed fastrand1.
|
||
|
|
return nanotime()
|
||
|
|
}
|