diff options
| author | Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com> | 2016-09-06 10:34:10 +0530 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2016-09-23 10:29:40 +1000 |
| commit | ab04543602b7fa8fbc33401c66f071ae4570da04 (patch) | |
| tree | a859469c38e9e9c5681a73adcb6fb5b41a9dbe04 /target-ppc/int_helper.c | |
| parent | 01fe9a470c4c49a18c386f411278780dedb65ad6 (diff) | |
target-ppc: add vector permute right indexed instruction
Add vpermr instruction from ISA 3.0.
Signed-off-by: Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>
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 | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/target-ppc/int_helper.c b/target-ppc/int_helper.c index b12af95877..291fba03f6 100644 --- a/target-ppc/int_helper.c +++ b/target-ppc/int_helper.c @@ -1126,6 +1126,29 @@ void helper_vperm(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, *r = result; } +void helper_vpermr(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, + ppc_avr_t *c) +{ + ppc_avr_t result; + int i; + + VECTOR_FOR_INORDER_I(i, u8) { + int s = c->u8[i] & 0x1f; +#if defined(HOST_WORDS_BIGENDIAN) + int index = 15 - (s & 0xf); +#else + int index = s & 0xf; +#endif + + if (s & 0x10) { + result.u8[i] = a->u8[index]; + } else { + result.u8[i] = b->u8[index]; + } + } + *r = result; +} + #if defined(HOST_WORDS_BIGENDIAN) #define VBPERMQ_INDEX(avr, i) ((avr)->u8[(i)]) #define VBPERMD_INDEX(i) (i) |