int ip4cidr(const char *s, ip4addr_t *ap, char **np) {
int bits = ip4prefix(s, ap, (char**)&s);
if (bits < 0) /* error */
return eret(np, s);
else if (*s == '/') /* probably /bits */
return ip4mbits(s + 1, np);
else if (bits == 8) /* disallow bare numbers */
return eret(np, s);
else
return cret(bits, np, s);
}
int ip4range(const char *s, ip4addr_t *ap, ip4addr_t *bp, char **np) {
int bits = ip4prefix(s, ap, (char**)&s);
if (bits < 0)
return eret(np, s);
else if (*s == '-') { /* a-z */
int bbits = ip4prefix(s + 1, bp, (char**)&s);
if (bbits < 0) return eret(np, s);
if (bbits == 8) { /* treat 127.0.0.1-2 as 127.0.0.1-127.0.0.2 */
*bp = (*bp >> (bits - 8)) | (*ap & ip4mask(bits - 8));
bbits = bits;
}
static int ip4mbits(const char *s, char **np) {
/* helper routine for ip4cidr() and ip4range() */
int bits;
if (!digit(*s))
return eret(np, s - 1);
bits = d2n(*s++);
while(digit(*s))
if ((bits = bits * 10 + d2n(*s++)) > 32)
return eret(np, s - 1);
/*if (!bits) return eret(np, s - 1); allow /0 mask too */
return cret(bits, np, s);
}
void __dead2 drop_el(aapcs64_params *args,
unsigned long spsr,
unsigned long entrypoint)
{
write_spsr(spsr);
write_elr(entrypoint);
eret(args->arg0,
args->arg1,
args->arg2,
args->arg3,
args->arg4,
args->arg5,
args->arg6,
args->arg7);
}
