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runtime: mark osyield nosplit on OpenBSD
osyield is called in code paths that are not allowed to split stack, e.g. casgstatus called from entersyscall/exitsyscall. It is nosplit on all other platforms. Mark it nosplit on OpenBSD as well. Change-Id: I3fed5d7f58b3d50610beca6eed2c7e902b8ec52c Reviewed-on: https://go-review.googlesource.com/c/go/+/319969 Trust: Cherry Mui <cherryyz@google.com> Run-TryBot: Cherry Mui <cherryyz@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Joel Sing <joel@sing.id.au>
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@ -23,6 +23,7 @@ func thrwakeup(ident uintptr, n int32) int32 {
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}
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func thrwakeup_trampoline()
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//go:nosplit
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func osyield() {
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libcCall(unsafe.Pointer(funcPC(sched_yield_trampoline)), unsafe.Pointer(nil))
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}
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