diff options
| author | Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com> | 2016-09-06 10:34:08 +0530 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2016-09-23 10:29:40 +1000 |
| commit | a5ad8fbf9d771d2accb583fc1eb58faf9931cfce (patch) | |
| tree | 4c9dc23daef4a8a162ee70373ffdae1ddb70521e /target-ppc/int_helper.c | |
| parent | b5d569a1bb033354847c34d2e011fed812ff7428 (diff) | |
target-ppc: add vector count trailing zeros instructions
The following vector count trailing zeros instructions are
added from ISA 3.0.
vctzb - Vector Count Trailing Zeros Byte
vctzh - Vector Count Trailing Zeros Halfword
vctzw - Vector Count Trailing Zeros Word
vctzd - Vector Count Trailing Zeros Doubleword
Signed-off-by: Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'target-ppc/int_helper.c')
| -rw-r--r-- | target-ppc/int_helper.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/target-ppc/int_helper.c b/target-ppc/int_helper.c index 9b81d91d64..4d1582dba2 100644 --- a/target-ppc/int_helper.c +++ b/target-ppc/int_helper.c @@ -2083,6 +2083,21 @@ VGENERIC_DO(clzd, u64) #undef clzw #undef clzd +#define ctzb(v) ((v) ? ctz32(v) : 8) +#define ctzh(v) ((v) ? ctz32(v) : 16) +#define ctzw(v) ctz32((v)) +#define ctzd(v) ctz64((v)) + +VGENERIC_DO(ctzb, u8) +VGENERIC_DO(ctzh, u16) +VGENERIC_DO(ctzw, u32) +VGENERIC_DO(ctzd, u64) + +#undef ctzb +#undef ctzh +#undef ctzw +#undef ctzd + #define popcntb(v) ctpop8(v) #define popcnth(v) ctpop16(v) #define popcntw(v) ctpop32(v) |