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target-ppc: Altivec 2.07: Vector Permute and Exclusive OR

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This patch adds the Vector Permuate and Exclusive OR (vpermxor)
instruction introduced in Power ISA Version 2.07.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Tom Musta 2014-02-12 15:23:19 -06:00 • committed by Alexander Graf
parent 57354f8f12
commit ac174549b7
3 changed files with 21 additions and 1 deletions
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14
target-ppc/int_helper.c
View file

@ -2700,6 +2700,20 @@ void helper_vshasigmad(ppc_avr_t *r, ppc_avr_t *a, uint32_t st_six)
#undef ROTRu64
#undef EL_IDX
void helper_vpermxor(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
{
int i;
VECTOR_FOR_INORDER_I(i, u8) {
int indexA = c->u8[i] >> 4;
int indexB = c->u8[i] & 0xF;
#if defined(HOST_WORDS_BIGENDIAN)
r->u8[i] = a->u8[indexA] ^ b->u8[indexB];
#else
r->u8[i] = a->u8[15-indexA] ^ b->u8[15-indexB];
#endif
}
}
#undef VECTOR_FOR_INORDER_I
#undef HI_IDX
#undef LO_IDX