diff options
| author | Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com> | 2016-09-28 11:15:18 +0530 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2016-10-05 11:05:28 +1100 |
| commit | 4879538c99117e249ceb092a2ec0828d23aff01e (patch) | |
| tree | 0d4c014257f15bf35a019d96a2341ebb40d82521 /target-ppc/int_helper.c | |
| parent | 0fa59364348e9cb52c48b0d83a1ceaed840854aa (diff) | |
target-ppc: add vclzlsbb/vctzlsbb instructions
The following vector instructions are added from ISA 3.0.
vclzlsbb - Vector Count Leading Zero Least-Significant Bits Byte
vctzlsbb - Vector Count Trailing Zero Least-Significant Bits Byte
Signed-off-by: Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
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 | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/target-ppc/int_helper.c b/target-ppc/int_helper.c index 77d6bced89..202854fabd 100644 --- a/target-ppc/int_helper.c +++ b/target-ppc/int_helper.c @@ -881,6 +881,36 @@ VCT(uxs, cvtsduw, u32) VCT(sxs, cvtsdsw, s32) #undef VCT +target_ulong helper_vclzlsbb(ppc_avr_t *r) +{ + target_ulong count = 0; + int i; + VECTOR_FOR_INORDER_I(i, u8) { + if (r->u8[i] & 0x01) { + break; + } + count++; + } + return count; +} + +target_ulong helper_vctzlsbb(ppc_avr_t *r) +{ + target_ulong count = 0; + int i; +#if defined(HOST_WORDS_BIGENDIAN) + for (i = ARRAY_SIZE(r->u8) - 1; i >= 0; i--) { +#else + for (i = 0; i < ARRAY_SIZE(r->u8); i++) { +#endif + if (r->u8[i] & 0x01) { + break; + } + count++; + } + return count; +} + void helper_vmhaddshs(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c) { |