24 lines
827 B
Go
24 lines
827 B
Go
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// Copyright 2019 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 runtime
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import "unsafe"
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func lwp_mcontext_init(mc *mcontextt, stk unsafe.Pointer, mp *m, gp *g, fn uintptr) {
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// Machine dependent mcontext initialisation for LWP.
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mc.__gregs[_REG_ELR] = uint64(funcPC(lwp_tramp))
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mc.__gregs[_REG_X31] = uint64(uintptr(stk))
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mc.__gregs[_REG_X0] = uint64(uintptr(unsafe.Pointer(mp)))
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mc.__gregs[_REG_X1] = uint64(uintptr(unsafe.Pointer(mp.g0)))
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mc.__gregs[_REG_X2] = uint64(fn)
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}
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//go:nosplit
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func cputicks() int64 {
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// Currently cputicks() is used in blocking profiler and to seed runtime·fastrand().
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// runtime·nanotime() is a poor approximation of CPU ticks that is enough for the profiler.
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return nanotime()
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}
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