// for the benchmark program and raw data.
//#define INVOKE_SYSCALL	CALL	0x10(GS) // non-portable
#define INVOKE_SYSCALL	INT	$0x80

#define SYS_exit		1
#define SYS_read		3
#define SYS_write		4
#define SYS_open		5
#define SYS_close		6
#define SYS_getpid		20
#define SYS_access		33
#define SYS_kill		37
#define SYS_brk 		45
#define SYS_munmap		91
#define SYS_socketcall		102
#define SYS_setittimer		104

		if int32(r1) == -1 {
			return 0, NewError(errstr())
		}
		// parent; return PID
		return int(r1), nil
	}

	// Fork succeeded, now in child.

	// Close fds we don't need.
	r1, _, _ = RawSyscall(SYS_OPEN, uintptr(unsafe.Pointer(dupdev)), uintptr(O_RDONLY), 0)
	dupdevfd = int(r1)
	if dupdevfd == -1 {
		goto childerror
	}
dirloop:
	for {

	SYS_FORK                     = 2   // { int fork(void); }
	SYS_READ                     = 3   // { ssize_t read(int fd, void *buf, \
	SYS_WRITE                    = 4   // { ssize_t write(int fd, const void *buf, \
	SYS_OPEN                     = 5   // { int open(char *path, int flags, int mode); }
	SYS_CLOSE                    = 6   // { int close(int fd); }
	SYS_WAIT4                    = 7   // { int wait4(int pid, int *status, \

	SYS_FORK                     = 2   // { int fork(void); }
	SYS_READ                     = 3   // { ssize_t read(int fd, void *buf, \
	SYS_WRITE                    = 4   // { ssize_t write(int fd, const void *buf, \
	SYS_OPEN                     = 5   // { int open(char *path, int flags, int mode); }
	SYS_CLOSE                    = 6   // { int close(int fd); }
	SYS_WAIT4                    = 7   // { int wait4(int pid, int *status, \

	SYS_FORK                     = 2   // { int fork(void); }
	SYS_READ                     = 3   // { ssize_t read(int fd, void *buf, \
	SYS_WRITE                    = 4   // { ssize_t write(int fd, const void *buf, \
	SYS_OPEN                     = 5   // { int open(char *path, int flags, int mode); }
	SYS_CLOSE                    = 6   // { int close(int fd); }
	SYS_WAIT4                    = 7   // { int wait4(int pid, int *status, \

	SYS_READ                 = 3   // { ssize_t|sys||read(int fd, void *buf, size_t nbyte); }
	SYS_WRITE                = 4   // { ssize_t|sys||write(int fd, const void *buf, size_t nbyte); }
	SYS_OPEN                 = 5   // { int|sys||open(const char *path, int flags, ... mode_t mode); }
	SYS_CLOSE                = 6   // { int|sys||close(int fd); }

	SYS_EXIT  = 1 // { void exit(int rval); }
	SYS_FORK  = 2 // { int fork(void); }
	SYS_READ  = 3 // { ssize_t read(int fd, void *buf, size_t nbyte); }
	SYS_WRITE = 4 // { ssize_t write(int fd, const void *buf, size_t nbyte); }
	SYS_OPEN  = 5 // { int open(char *path, int flags, int mode); }
	SYS_CLOSE = 6 // { int close(int fd); }
	SYS_WAIT4 = 7 // { int wait4(int pid, int *status, int options, struct rusage *rusage); } wait4 wait_args int

	SYS_READ                 = 3   // { ssize_t|sys||read(int fd, void *buf, size_t nbyte); }
	SYS_WRITE                = 4   // { ssize_t|sys||write(int fd, const void *buf, size_t nbyte); }
	SYS_OPEN                 = 5   // { int|sys||open(const char *path, int flags, ... mode_t mode); }
	SYS_CLOSE                = 6   // { int|sys||close(int fd); }

	SYS_READ                 = 3   // { ssize_t|sys||read(int fd, void *buf, size_t nbyte); }
	SYS_WRITE                = 4   // { ssize_t|sys||write(int fd, const void *buf, size_t nbyte); }
	SYS_OPEN                 = 5   // { int|sys||open(const char *path, int flags, ... mode_t mode); }
	SYS_CLOSE                = 6   // { int|sys||close(int fd); }

	SYS_READ                 = 3   // { ssize_t|sys||read(int fd, void *buf, size_t nbyte); }
	SYS_WRITE                = 4   // { ssize_t|sys||write(int fd, const void *buf, size_t nbyte); }
	SYS_OPEN                 = 5   // { int|sys||open(const char *path, int flags, ... mode_t mode); }
	SYS_CLOSE                = 6   // { int|sys||close(int fd); }