1 files changed, 0 insertions, 275 deletions
diff --git a/src/runtime/os1_netbsd.go b/src/runtime/os1_netbsd.go
deleted file mode 100644
index 3c3b64186d..0000000000
--- a/src/runtime/os1_netbsd.go
+++ /dev/null
@@ -1,275 +0,0 @@
-// Copyright 2011 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 (
-	"runtime/internal/atomic"
-	"unsafe"
-)
-
-const (
-	_ESRCH     = 3
-	_ETIMEDOUT = 60
-
-	// From NetBSD's <sys/time.h>
-	_CLOCK_REALTIME  = 0
-	_CLOCK_VIRTUAL   = 1
-	_CLOCK_PROF      = 2
-	_CLOCK_MONOTONIC = 3
-)
-
-var sigset_all = sigset{[4]uint32{^uint32(0), ^uint32(0), ^uint32(0), ^uint32(0)}}
-
-// From NetBSD's <sys/sysctl.h>
-const (
-	_CTL_HW  = 6
-	_HW_NCPU = 3
-)
-
-func getncpu() int32 {
-	mib := [2]uint32{_CTL_HW, _HW_NCPU}
-	out := uint32(0)
-	nout := unsafe.Sizeof(out)
-	ret := sysctl(&mib[0], 2, (*byte)(unsafe.Pointer(&out)), &nout, nil, 0)
-	if ret >= 0 {
-		return int32(out)
-	}
-	return 1
-}
-
-//go:nosplit
-func semacreate(mp *m) {
-}
-
-//go:nosplit
-func semasleep(ns int64) int32 {
-	_g_ := getg()
-
-	// Compute sleep deadline.
-	var tsp *timespec
-	if ns >= 0 {
-		var ts timespec
-		var nsec int32
-		ns += nanotime()
-		ts.set_sec(timediv(ns, 1000000000, &nsec))
-		ts.set_nsec(nsec)
-		tsp = &ts
-	}
-
-	for {
-		v := atomic.Load(&_g_.m.waitsemacount)
-		if v > 0 {
-			if atomic.Cas(&_g_.m.waitsemacount, v, v-1) {
-				return 0 // semaphore acquired
-			}
-			continue
-		}
-
-		// Sleep until unparked by semawakeup or timeout.
-		ret := lwp_park(tsp, 0, unsafe.Pointer(&_g_.m.waitsemacount), nil)
-		if ret == _ETIMEDOUT {
-			return -1
-		}
-	}
-}
-
-//go:nosplit
-func semawakeup(mp *m) {
-	atomic.Xadd(&mp.waitsemacount, 1)
-	// From NetBSD's _lwp_unpark(2) manual:
-	// "If the target LWP is not currently waiting, it will return
-	// immediately upon the next call to _lwp_park()."
-	ret := lwp_unpark(int32(mp.procid), unsafe.Pointer(&mp.waitsemacount))
-	if ret != 0 && ret != _ESRCH {
-		// semawakeup can be called on signal stack.
-		systemstack(func() {
-			print("thrwakeup addr=", &mp.waitsemacount, " sem=", mp.waitsemacount, " ret=", ret, "\n")
-		})
-	}
-}
-
-// May run with m.p==nil, so write barriers are not allowed.
-//go:nowritebarrier
-func newosproc(mp *m, stk unsafe.Pointer) {
-	if false {
-		print("newosproc stk=", stk, " m=", mp, " g=", mp.g0, " id=", mp.id, " ostk=", &mp, "\n")
-	}
-
-	var uc ucontextt
-	getcontext(unsafe.Pointer(&uc))
-
-	uc.uc_flags = _UC_SIGMASK | _UC_CPU
-	uc.uc_link = nil
-	uc.uc_sigmask = sigset_all
-
-	lwp_mcontext_init(&uc.uc_mcontext, stk, mp, mp.g0, funcPC(netbsdMstart))
-
-	ret := lwp_create(unsafe.Pointer(&uc), 0, unsafe.Pointer(&mp.procid))
-	if ret < 0 {
-		print("runtime: failed to create new OS thread (have ", mcount()-1, " already; errno=", -ret, ")\n")
-		throw("runtime.newosproc")
-	}
-}
-
-// netbsdMStart is the function call that starts executing a newly
-// created thread. On NetBSD, a new thread inherits the signal stack
-// of the creating thread. That confuses minit, so we remove that
-// signal stack here before calling the regular mstart. It's a bit
-// baroque to remove a signal stack here only to add one in minit, but
-// it's a simple change that keeps NetBSD working like other OS's.
-// At this point all signals are blocked, so there is no race.
-//go:nosplit
-func netbsdMstart() {
-	signalstack(nil)
-	mstart()
-}
-
-func osinit() {
-	ncpu = getncpu()
-}
-
-var urandom_dev = []byte("/dev/urandom\x00")
-
-//go:nosplit
-func getRandomData(r []byte) {
-	fd := open(&urandom_dev[0], 0 /* O_RDONLY */, 0)
-	n := read(fd, unsafe.Pointer(&r[0]), int32(len(r)))
-	closefd(fd)
-	extendRandom(r, int(n))
-}
-
-func goenvs() {
-	goenvs_unix()
-}
-
-// Called to initialize a new m (including the bootstrap m).
-// Called on the parent thread (main thread in case of bootstrap), can allocate memory.
-func mpreinit(mp *m) {
-	mp.gsignal = malg(32 * 1024)
-	mp.gsignal.m = mp
-}
-
-//go:nosplit
-func msigsave(mp *m) {
-	sigprocmask(_SIG_SETMASK, nil, &mp.sigmask)
-}
-
-//go:nosplit
-func msigrestore(sigmask sigset) {
-	sigprocmask(_SIG_SETMASK, &sigmask, nil)
-}
-
-//go:nosplit
-func sigblock() {
-	sigprocmask(_SIG_SETMASK, &sigset_all, nil)
-}
-
-// Called to initialize a new m (including the bootstrap m).
-// Called on the new thread, cannot allocate memory.
-func minit() {
-	_g_ := getg()
-	_g_.m.procid = uint64(lwp_self())
-
-	// Initialize signal handling.
-
-	// On NetBSD a thread created by pthread_create inherits the
-	// signal stack of the creating thread. We always create a
-	// new signal stack here, to avoid having two Go threads using
-	// the same signal stack. This breaks the case of a thread
-	// created in C that calls sigaltstack and then calls a Go
-	// function, because we will lose track of the C code's
-	// sigaltstack, but it's the best we can do.
-	signalstack(&_g_.m.gsignal.stack)
-	_g_.m.newSigstack = true
-
-	// restore signal mask from m.sigmask and unblock essential signals
-	nmask := _g_.m.sigmask
-	for i := range sigtable {
-		if sigtable[i].flags&_SigUnblock != 0 {
-			nmask.__bits[(i-1)/32] &^= 1 << ((uint32(i) - 1) & 31)
-		}
-	}
-	sigprocmask(_SIG_SETMASK, &nmask, nil)
-}
-
-// Called from dropm to undo the effect of an minit.
-//go:nosplit
-func unminit() {
-	if getg().m.newSigstack {
-		signalstack(nil)
-	}
-}
-
-func memlimit() uintptr {
-	return 0
-}
-
-func sigtramp()
-
-type sigactiont struct {
-	sa_sigaction uintptr
-	sa_mask      sigset
-	sa_flags     int32
-}
-
-//go:nosplit
-//go:nowritebarrierrec
-func setsig(i int32, fn uintptr, restart bool) {
-	var sa sigactiont
-	sa.sa_flags = _SA_SIGINFO | _SA_ONSTACK
-	if restart {
-		sa.sa_flags |= _SA_RESTART
-	}
-	sa.sa_mask = sigset_all
-	if fn == funcPC(sighandler) {
-		fn = funcPC(sigtramp)
-	}
-	sa.sa_sigaction = fn
-	sigaction(i, &sa, nil)
-}
-
-//go:nosplit
-//go:nowritebarrierrec
-func setsigstack(i int32) {
-	throw("setsigstack")
-}
-
-//go:nosplit
-//go:nowritebarrierrec
-func getsig(i int32) uintptr {
-	var sa sigactiont
-	sigaction(i, nil, &sa)
-	if sa.sa_sigaction == funcPC(sigtramp) {
-		return funcPC(sighandler)
-	}
-	return sa.sa_sigaction
-}
-
-//go:nosplit
-func signalstack(s *stack) {
-	var st sigaltstackt
-	if s == nil {
-		st.ss_flags = _SS_DISABLE
-	} else {
-		st.ss_sp = s.lo
-		st.ss_size = s.hi - s.lo
-		st.ss_flags = 0
-	}
-	sigaltstack(&st, nil)
-}
-
-//go:nosplit
-//go:nowritebarrierrec
-func updatesigmask(m sigmask) {
-	var mask sigset
-	copy(mask.__bits[:], m[:])
-	sigprocmask(_SIG_SETMASK, &mask, nil)
-}
-
-func unblocksig(sig int32) {
-	var mask sigset
-	mask.__bits[(sig-1)/32] |= 1 << ((uint32(sig) - 1) & 31)
-	sigprocmask(_SIG_UNBLOCK, &mask, nil)
-}