SYS_FCHFLAGS             = 35  // { int|sys||fchflags(int fd, u_long flags); }
	SYS_SYNC                 = 36  // { void|sys||sync(void); }
	SYS_KILL                 = 37  // { int|sys||kill(pid_t pid, int signum); }
	SYS_GETPPID              = 39  // { pid_t|sys||getppid(void); }
	SYS_DUP                  = 41  // { int|sys||dup(int fd); }
	SYS_PIPE                 = 42  // { int|sys||pipe(void); }

	SYS_FCHFLAGS             = 35  // { int|sys||fchflags(int fd, u_long flags); }
	SYS_SYNC                 = 36  // { void|sys||sync(void); }
	SYS_KILL                 = 37  // { int|sys||kill(pid_t pid, int signum); }
	SYS_GETPPID              = 39  // { pid_t|sys||getppid(void); }
	SYS_DUP                  = 41  // { int|sys||dup(int fd); }
	SYS_PIPE                 = 42  // { int|sys||pipe(void); }

//sysnb	Getrusage(who int, rusage *Rusage) (err error)
//sysnb	Getsid(pid int) (sid int, err error)
//sysnb	Gettimeofday(tv *Timeval) (err error)
//sysnb	Getuid() (uid int)
//sys	Issetugid() (tainted bool)
//sys	Kill(pid int, signum Signal) (err error)
//sys	Kqueue() (fd int, err error)
//sys	Lchown(path string, uid int, gid int) (err error)
//sys	Link(path string, link string) (err error)
//sys	Listen(s int, backlog int) (err error)

//sysnb	Getrusage(who int, rusage *Rusage) (err error)
//sysnb	Getsid(pid int) (sid int, err error)
//sysnb	Gettimeofday(tv *Timeval) (err error)
//sysnb	Getuid() (uid int)
//sys	Issetugid() (tainted bool)
//sys	Kill(pid int, signum Signal) (err error)
//sys	Kqueue() (fd int, err error)
//sys	Lchown(path string, uid int, gid int) (err error)
//sys	Link(path string, link string) (err error)
//sys	Listen(s int, backlog int) (err error)

	SYS_FCHFLAGS             = 35  // { int|sys||fchflags(int fd, u_long flags); }
	SYS_SYNC                 = 36  // { void|sys||sync(void); }
	SYS_KILL                 = 37  // { int|sys||kill(pid_t pid, int signum); }
	SYS_GETPPID              = 39  // { pid_t|sys||getppid(void); }
	SYS_DUP                  = 41  // { int|sys||dup(int fd); }
	SYS_PIPE                 = 42  // { int|sys||pipe(void); }

	SYS_FCHFLAGS             = 35  // { int|sys||fchflags(int fd, u_long flags); }
	SYS_SYNC                 = 36  // { void|sys||sync(void); }
	SYS_KILL                 = 37  // { int|sys||kill(pid_t pid, int signum); }
	SYS_GETPPID              = 39  // { pid_t|sys||getppid(void); }
	SYS_DUP                  = 41  // { int|sys||dup(int fd); }
	SYS_PIPE                 = 42  // { int|sys||pipe(void); }

	SYS_FCHFLAGS             = 35  // { int|sys||fchflags(int fd, u_long flags); }
	SYS_SYNC                 = 36  // { void|sys||sync(void); }
	SYS_KILL                 = 37  // { int|sys||kill(pid_t pid, int signum); }
	SYS_GETPPID              = 39  // { pid_t|sys||getppid(void); }
	SYS_DUP                  = 41  // { int|sys||dup(int fd); }
	SYS_PIPE                 = 42  // { int|sys||pipe(void); }

//sysnb	Getrusage(who int, rusage *Rusage) (err error)
//sysnb	Getsid(pid int) (sid int, err error)
//sysnb	Gettimeofday(tv *Timeval) (err error)
//sysnb	Getuid() (uid int)
//sys	Issetugid() (tainted bool)
//sys	Kill(pid int, signum syscall.Signal) (err error)
//sys	Kqueue() (fd int, err error)
//sys	Lchown(path string, uid int, gid int) (err error)
//sys	Link(path string, link string) (err error)

	MOVM.DB.W [R4-R11], (R13)
	SUB	$16, R13

	// this might be called in external code context,
	// where g is not set.
	// first save R0, because runtime·load_g will clobber it
	MOVW	R0, 4(R13) // signum
	MOVB	runtime·iscgo(SB), R0
	CMP 	$0, R0
	BL.NE	runtime·load_g(SB)

	MOVW	R1, 8(R13)
	MOVW	R2, 12(R13)
	BL	runtime·sigtrampgo(SB)

	// Restore callee-save registers.
	ADD	$16, R13

	// where g is not set.
	// first save R0, because runtime·load_g will clobber it
	MOVW	R0, 8(RSP)
	MOVBU	runtime·iscgo(SB), R0
	CMP	$0, R0
	BEQ	2(PC)
	BL	runtime·load_g(SB)

	// Restore signum to R0.
	MOVW	8(RSP), R0
	// R1 and R2 already contain info and ctx, respectively.
	MOVD	$runtime·sigtrampgo<ABIInternal>(SB), R3
	BL	(R3)

	// Restore callee-save registers.
	RESTORE_R19_TO_R28(8*4)