static ut64 mask64(ut64 mb, ut64 me) {
int i;
ut64 mask = 0;
if (mb > 63 || me > 63) {
return mask;
}
if (mb < (me + 1)) {
for (i = mb; i <= me; i++) {
mask = mask | (ut64) (1LL << (63 - i));
}
} else if (mb == (me + 1)) {
mask = 0xffffffffffffffffull;
} else if (mb > (me + 1)) {
ut64 lo = mask64 (0, me);
ut64 hi = mask64 (mb, 63);
mask = lo | hi;
}
return mask;
}
static const char* inv_mask64(const char *mb_c, const char *sh) {
static char cmask[32];
ut64 mb = 0;
ut64 me = 0;
if (mb_c) mb = atol (mb_c);
if (sh) {
me = atol (sh);
}
snprintf (cmask, sizeof (cmask), "0x%"PFMT64x"", mask64 (mb, ~me));
return cmask;
}
static const char* cmask64(const char *mb_c, const char *me_c) {
static char cmask[32];
ut64 mb = 0;
ut64 me = 0;
if (mb_c) {
mb = strtol (mb_c, NULL, 16);
}
if (me_c) {
me = strtol (me_c, NULL, 16);
}
snprintf (cmask, sizeof (cmask), "0x%"PFMT64x"", mask64 (mb, me));
return cmask;
}
// pick bits [hi,...,lo] from val
static inline u_int64_t pick64(u_int64_t val, int hi = 31, int lo = 0)
{
return (val & mask64(hi, lo));
}
