// Invented values to support what package os expects.
type Timeval struct {
	Sec  int32
	Usec int32
}

func (tv *Timeval) Nanoseconds() int64 {
	return (int64(tv.Sec)*1e6 + int64(tv.Usec)) * 1e3
}

func NsecToTimeval(nsec int64) (tv Timeval) {
	tv.Sec = int32(nsec / 1e9)
	tv.Usec = int32(nsec % 1e9 / 1e3)
	return
}

type SecurityAttributes struct {
	Length             uint32

	JALR	RA, A7

finish:
	MOV	8(X2), T0	// sec
	MOV	16(X2), T1	// nsec

	MOV	S2, X2	// restore stack
	MOV	24(X2), A2
	MOV	A2, m_vdsoPC(S3)

	MOV	32(X2), A3
	MOV	A3, m_vdsoSP(S3)

	MOV	T0, sec+0(FP)
	MOVW	T1, nsec+8(FP)
	RET

fallback:
	MOV	$8(X2), A1
	MOV	$SYS_clock_gettime, A7
	ECALL
	MOV	8(X2), T0	// sec
	MOV	16(X2), T1	// nsec
	MOV	T0, sec+0(FP)
	MOVW	T1, nsec+8(FP)

			// Fuzzing sec and nsec in a smaller range (uint32 instead of int64),
			// so that the result Unix time is a valid date and can be parsed into RFC3339 format.
			var sec, nsec uint32
			c.Fuzz(&sec)
			c.Fuzz(&nsec)
			j.CreationTimestamp = metav1.Unix(int64(sec), int64(nsec)).Rfc3339Copy()

			if j.DeletionTimestamp != nil {
				c.Fuzz(&sec)
				c.Fuzz(&nsec)

	MOVW	flags+0(FP), R4
	SYSCALL	$SYS_pipe2
	MOVW	R3, errno+16(FP)
	RET

// func usleep(usec uint32)
TEXT runtime·usleep(SB),NOSPLIT,$16-4
	MOVW	usec+0(FP), R3

	// Use magic constant 0x8637bd06 and shift right 51
	// to perform usec/1000000.
	MOVD	$0x8637bd06, R4
	MULLD	R3, R4, R4	// Convert usec to S.
	SRD	$51, R4, R4
	MOVD	R4, 8(R1)	// Store to tv_sec

	MOVD	$1000000, R5

	// we cannot receive another signal.
	MOVV	16(R3), R25
	MOVV	R25, m_vdsoSP(R24)
	MOVV	8(R3), R25
	MOVV	R25, m_vdsoPC(R24)

	// sec is in R7, nsec in R5
	// return nsec in R7
	MOVV	$1000000000, R4
	MULVU	R4, R7, R7
	ADDVU	R5, R7
	MOVV	R7, ret+0(FP)
	RET

fallback:
	MOVV	$SYS_clock_gettime, R11
	SYSCALL
	JMP	finish

	_SYS_setgroups  = SYS_SETGROUPS32
	_SYS_clone3     = 435
	_SYS_faccessat2 = 439
	_SYS_fchmodat2  = 452
)

func setTimespec(sec, nsec int64) Timespec {
	return Timespec{Sec: int32(sec), Nsec: int32(nsec)}
}

func setTimeval(sec, usec int64) Timeval {
	return Timeval{Sec: int32(sec), Usec: int32(usec)}
}

// 64-bit file system and 32-bit uid calls
// (386 default is 32-bit file system and 16-bit uid).

//sys	writev(fd int, iovecs []Iovec) (n uintptr, err error)

//sys	gettimeofday(tv *Timeval, tzp *Timezone) (err error)

func setTimespec(sec, nsec int64) Timespec {
	return Timespec{Sec: sec, Nsec: nsec}
}

func setTimeval(sec, usec int64) Timeval {
	return Timeval{Sec: sec, Usec: int32(usec)}
}

func readlen(fd int, buf *byte, nbuf int) (n int, err error) {

	atime := TimespecToNsec(ts[0])
	mtime := TimespecToNsec(ts[1])
	if ts[0].Nsec == UTIME_OMIT || ts[1].Nsec == UTIME_OMIT {
		var st Stat_t
		if err := Stat(path, &st); err != nil {
			return err
		}
		if ts[0].Nsec == UTIME_OMIT {
			atime = int64(st.Atime)
		}
		if ts[1].Nsec == UTIME_OMIT {
			mtime = int64(st.Mtime)
		}
	}
	errno := path_filestat_set_times(
		dirFd,

		// mistaken for any other Value, time.Time or otherwise.
		return Value{any: timeLocation(nil)}
	}
	nsec := v.UnixNano()
	t := time.Unix(0, nsec)
	if v.Equal(t) {
		// UnixNano correctly represents the time, so use a zero-alloc representation.
		return Value{num: uint64(nsec), any: timeLocation(v.Location())}
	}
	// Fall back to the general form.

//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 {
		return scratch
	}
	return ns
}