func read(fd int32, p unsafe.Pointer, n int32) int32

func closefd(fd int32) int32

func exit(code int32)
func usleep(usec uint32)

//go:nosplit
func usleep_no_g(usec uint32) {
	usleep(usec)
}

// write1 calls the write system call.
// It returns a non-negative number of bytes written or a negative errno value.
//
//go:noescape

// If all retries return EAGAIN, then retryOnEAGAIN will return EAGAIN.
func retryOnEAGAIN(fn func() int32) int32 {
	for tries := 0; tries < 20; tries++ {
		errno := fn()
		if errno != _EAGAIN {
			return errno
		}
		usleep_no_g(uint32(tries+1) * 1000) // milliseconds
	}
	return _EAGAIN

// 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 usleep_no_g(usec uint32) {
	usleep(usec)
}

//go:nosplit
func sigsave(p *sigset) {
}

//go:nosplit
func msigrestore(sigmask sigset) {
}

//go:nosplit
//go:nowritebarrierrec

func read(fd int32, p unsafe.Pointer, n int32) int32

func closefd(fd int32) int32

func exit(code int32)
func usleep(usec uint32)

//go:nosplit
func usleep_no_g(usec uint32) {
	usleep(usec)
}

// write1 calls the write system call.
// It returns a non-negative number of bytes written or a negative errno value.
//
//go:noescape

//go:cgo_unsafe_args
func usleep(usec uint32) {
	libcCall(unsafe.Pointer(abi.FuncPCABI0(usleep_trampoline)), unsafe.Pointer(&usec))
}
func usleep_trampoline()

//go:nosplit
//go:cgo_unsafe_args
func usleep_no_g(usec uint32) {
	asmcgocall_no_g(unsafe.Pointer(abi.FuncPCABI0(usleep_trampoline)), unsafe.Pointer(&usec))
}

//go:nosplit
//go:cgo_unsafe_args

//go:nosplit
func osyield_no_g() {
	osyield()
}

//go:nosplit
func usleep(µs uint32) {
	ms := int32(µs / 1000)
	if ms == 0 {
		ms = 1
	}
	sleep(ms)
}

//go:nosplit
func usleep_no_g(usec uint32) {
	usleep(usec)
}

//go:nosplit
func nanotime1() int64 {
	var scratch int64
	ns := nsec(&scratch)
	// TODO(aram): remove hack after I fix _nsec in the pc64 kernel.
	if ns == 0 {

// resources in minit, semacreate, or elsewhere. Do not take locks after calling this.
func mdestroy(mp *m) {
}

//go:nosplit
func osyield_no_g() {
	usleep_no_g(1)
}

//go:nosplit
func osyield() {
	usleep(1)
}

const (
	_NSIG        = 32
	_SI_USER     = 0 /* empirically true, but not what headers say */
	_SIG_BLOCK   = 1
	_SIG_UNBLOCK = 2

}

func sysconf(name int32) int64 {
	return int64(sysvicall1(&libc_sysconf, uintptr(name)))
}

func usleep1(usec uint32)

//go:nosplit
func usleep_no_g(µs uint32) {
	usleep1(µs)
}

//go:nosplit
func usleep(µs uint32) {
	usleep1(µs)
}

func walltime() (sec int64, nsec int32) {
	var ts mts

func internal_cpu_getsystemcfg(label uint) uint {
	r, _ := syscall1(&libc_getsystemcfg, uintptr(label))
	return uint(r)
}

func usleep1(us uint32)

//go:nosplit
func usleep_no_g(us uint32) {
	usleep1(us)
}

//go:nosplit
func usleep(us uint32) {
	r, err := syscall1(&libc_usleep, uintptr(us))
	if int32(r) == -1 {
		println("syscall usleep failed: ", hex(err))

//go:cgo_unsafe_args
func usleep(usec uint32) {
	libcCall(unsafe.Pointer(abi.FuncPCABI0(usleep_trampoline)), unsafe.Pointer(&usec))
}
func usleep_trampoline()

//go:nosplit
//go:cgo_unsafe_args
func usleep_no_g(usec uint32) {
	asmcgocall_no_g(unsafe.Pointer(abi.FuncPCABI0(usleep_trampoline)), unsafe.Pointer(&usec))
}

//go:nosplit
//go:cgo_unsafe_args
func write1(fd uintptr, p unsafe.Pointer, n int32) int32 {