//go:nosplit
func semacreate(mp *m) {
}

//go:nosplit
func semasleep(ns int64) int32 {
	gp := getg()

	// Compute sleep deadline.
	var tsp *timespec
	if ns >= 0 {
		var ts timespec
		ts.setNsec(ns + nanotime())
		tsp = &ts
	}

	for {
		v := atomic.Load(&gp.m.waitsemacount)
		if v > 0 {
			if atomic.Cas(&gp.m.waitsemacount, v, v-1) {
				return 0 // semaphore acquired
			}
			continue
		}

func readTimeRandom(r []byte) {
	// Inspired by wyrand.
	// An earlier version of this code used getg().m.procid as well,
	// but note that this is called so early in startup that procid
	// is not initialized yet.
	v := uint64(nanotime())
	for len(r) > 0 {
		v ^= 0xa0761d6478bd642f
		v *= 0xe7037ed1a0b428db
		size := 8
		if len(r) < 8 {
			size = len(r)
		}
		for i := 0; i < size; i++ {
			r[i] ^= byte(v >> (8 * i))
		}

// license that can be found in the LICENSE file.

//go:build !aix && !darwin && !freebsd && !openbsd && !plan9 && !solaris && !wasip1

package runtime

//go:wasmimport gojs runtime.nanotime1

					"l7": "lv7",
					"l8": "lv8",
				},
				Annotations: map[string]string{
					"a7": "av7",
					"a8": "av8",
				},
			},
		},
		StartTime:      wantTime,
		EndTime:        wantTime,
		Since:          Duration(time.Minute),
		CriticalErrors: []string{"e1", "e2"},
		IgnoredErrors:  []string{"e3", "e4"},
	}

	got := &BugReportConfig{}

	case _CLOCK_REALTIME:
		abs = true
	default:
		return zeroBintime
	}
	return binuptime(abs)
}

func fallback_nanotime() int64
func fallback_walltime() (sec int64, nsec int32)

//go:nosplit
func nanotime1() int64 {
	bt := vdsoClockGettime(_CLOCK_MONOTONIC)
	if bt == zeroBintime {
		return fallback_nanotime()
	}
	return int64((1e9 * uint64(bt.sec)) + ((1e9 * uint64(bt.frac>>32)) >> 32))
}

func mmap(addr unsafe.Pointer, n uintptr, prot, flags, fd int32, off uint32) (p unsafe.Pointer, err int)

// munmap calls the munmap system call. It is implemented in assembly.
func munmap(addr unsafe.Pointer, n uintptr)

func nanotime1() int64

//go:noescape
func sigaltstack(new, old *stackt)

func fcntl(fd, cmd, arg int32) (ret int32, errno int32)

func walltime() (sec int64, nsec int32)

	MOVV	$87, R2			// sys_clock_gettime
	SYSCALL

	MOVV	8(R29), R4		// sec
	MOVV	16(R29), R5		// nsec
	MOVV	R4, sec+0(FP)
	MOVW	R5, nsec+8(FP)

	RET

// int64 nanotime1(void) so really
// void nanotime1(int64 *nsec)
TEXT runtime·nanotime1(SB),NOSPLIT,$32
	MOVW	CLOCK_MONOTONIC, R4	// arg 1 - clock_id
	MOVV	$8(R29), R5		// arg 2 - tp
	MOVV	$87, R2			// sys_clock_gettime
	SYSCALL

	MOVL	12(SP), AX		// sec - l32
	MOVL	AX, sec_lo+0(FP)
	MOVL	16(SP), AX		// sec - h32
	MOVL	AX, sec_hi+4(FP)

	MOVL	20(SP), BX		// nsec
	MOVL	BX, nsec+8(FP)
	RET

// int64 nanotime1(void) so really
// void nanotime1(int64 *nsec)
TEXT runtime·nanotime1(SB),NOSPLIT,$32
	LEAL	12(SP), BX
	MOVL	$CLOCK_MONOTONIC, 4(SP)	// arg 1 - clock_id
	MOVL	BX, 8(SP)		// arg 2 - tp
	MOVL	$SYS___clock_gettime50, AX
	INT	$0x80

	SVC	$SYS___clock_gettime50

	MOVD	8(RSP), R0		// sec
	MOVD	16(RSP), R1		// nsec

	// sec is in R0, nsec in R1
	MOVD	R0, sec+0(FP)
	MOVW	R1, nsec+8(FP)
	RET

// int64 nanotime1(void) so really
// void nanotime1(int64 *nsec)
TEXT runtime·nanotime1(SB), NOSPLIT, $32
	MOVD	$CLOCK_MONOTONIC, R0	// arg 1 - clock_id
	MOVD	$8(RSP), R1		// arg 2 - tp
	SVC	$SYS___clock_gettime50
	MOVD	8(RSP), R0		// sec

	var time timestamp
	if clock_time_get(clockRealtime, 0, unsafe.Pointer(&time)) != 0 {
		throw("clock_time_get failed")
	}
	return int64(time / 1000000000), int32(time % 1000000000)
}

func nanotime1() int64 {
	var time timestamp
	if clock_time_get(clockMonotonic, 0, unsafe.Pointer(&time)) != 0 {
		throw("clock_time_get failed")
	}
	return int64(time)