/* Return -1 on error or 1 on success (never 0!). */
static int
get_syscall_args(struct tcb *tcp)
{
unsigned int i;
for (i = 0; i < tcp->s_ent->nargs; ++i)
if (upeek(tcp->pid, (i < 5 ? i : i + 2)*4, &tcp->u_arg[i]) < 0)
return -1;
return 1;
}