SYS_ACCEPT4        = 93  // { int sys_accept4(int s, struct sockaddr *name, socklen_t *anamelen, int flags); }
	SYS___THRSLEEP     = 94  // { int sys___thrsleep(const volatile void *ident, clockid_t clock_id, const struct timespec *tp, void *lock, const int *abort); }
	SYS_FSYNC          = 95  // { int sys_fsync(int fd); }
	SYS_SETPRIORITY    = 96  // { int sys_setpriority(int which, id_t who, int prio); }

	SYS_ACCEPT4        = 93  // { int sys_accept4(int s, struct sockaddr *name, socklen_t *anamelen, int flags); }
	SYS___THRSLEEP     = 94  // { int sys___thrsleep(const volatile void *ident, clockid_t clock_id, const struct timespec *tp, void *lock, const int *abort); }
	SYS_FSYNC          = 95  // { int sys_fsync(int fd); }
	SYS_SETPRIORITY    = 96  // { int sys_setpriority(int which, id_t who, int prio); }

int nrecvmsg(int, uintptr_t, int);
int nsendmsg(int, uintptr_t, int);
int munmap(uintptr_t, uintptr_t);
int madvise(uintptr_t, size_t, int);
int mprotect(uintptr_t, size_t, int);
int mlock(uintptr_t, size_t);
int mlockall(int);
int msync(uintptr_t, size_t, int);
int munlock(uintptr_t, size_t);
int munlockall();
int pipe(uintptr_t);
int poll(uintptr_t, int, int);

//sys	munmap(addr uintptr, length uintptr) (err error)
//sys	Madvise(b []byte, advice int) (err error)
//sys	Mprotect(b []byte, prot int) (err error)
//sys	Mlock(b []byte) (err error)
//sys	Mlockall(flags int) (err error)
//sys	Msync(b []byte, flags int) (err error)
//sys	Munlock(b []byte) (err error)
//sys	Munlockall() (err error)

//sysnb	pipe(p *[2]_C_int) (err error)

	SYS___SYSCTL             = 202 // { int|sys||__sysctl(const int *name, u_int namelen, void *old, size_t *oldlenp, const void *new, size_t newlen); }
	SYS_MLOCK                = 203 // { int|sys||mlock(const void *addr, size_t len); }
	SYS_MUNLOCK              = 204 // { int|sys||munlock(const void *addr, size_t len); }
	SYS_UNDELETE             = 205 // { int|sys||undelete(const char *path); }

	if cause == nil {
		cause = err
	}
	c.mu.Lock()
	if c.err != nil {
		c.mu.Unlock()
		return // already canceled
	}
	c.err = err
	c.cause = cause
	d, _ := c.done.Load().(chan struct{})
	if d == nil {
		c.done.Store(closedchan)
	} else {
		close(d)
	}
	for child := range c.children {
		// NOTE: acquiring the child's lock while holding parent's lock.
		child.cancel(false, err, cause)
	}

			}

			// R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
			// turn ADRP to MOVZ
			o0 = 0xd2a00000 | uint32(o0&0x1f) | (uint32((v>>16)&0xffff) << 5)
			// R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
			// turn LD64 to MOVK
			if v&3 != 0 {
				ldr.Errorf(s, "invalid address: %x for relocation type: R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC", v)
			}
			o1 = 0xf2800000 | uint32(o1&0x1f) | (uint32(v&0xffff) << 5)

	_, _, e1 := Syscall(SYS_MADVISE, uintptr(_p0), uintptr(len(b)), uintptr(behav))
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Mlock(b []byte) (err error) {
	var _p0 unsafe.Pointer
	if len(b) > 0 {
		_p0 = unsafe.Pointer(&b[0])
	} else {
		_p0 = unsafe.Pointer(&_zero)
	}
	_, _, e1 := Syscall(SYS_MLOCK, uintptr(_p0), uintptr(len(b)), 0)

	_, _, e1 := Syscall(SYS_MADVISE, uintptr(_p0), uintptr(len(b)), uintptr(behav))
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Mlock(b []byte) (err error) {
	var _p0 unsafe.Pointer
	if len(b) > 0 {
		_p0 = unsafe.Pointer(&b[0])
	} else {
		_p0 = unsafe.Pointer(&_zero)
	}
	_, _, e1 := Syscall(SYS_MLOCK, uintptr(_p0), uintptr(len(b)), 0)

	_, _, e1 := Syscall(SYS_MADVISE, uintptr(_p0), uintptr(len(b)), uintptr(behav))
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Mlock(b []byte) (err error) {
	var _p0 unsafe.Pointer
	if len(b) > 0 {
		_p0 = unsafe.Pointer(&b[0])
	} else {
		_p0 = unsafe.Pointer(&_zero)
	}
	_, _, e1 := Syscall(SYS_MLOCK, uintptr(_p0), uintptr(len(b)), 0)