On 08/09/2016 03:42 PM, Rajalakshmi Srinivasaraghavan wrote:
+void helper_vbpermd(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
+{
+ int i, j;
+ uint64_t perm = 0;
+
+ VECTOR_FOR_INORDER_I(i, u64) {
+ perm = 0;
+ for (j = 0; j < 8; j++) {
+ int index = VBPERMQ_INDEX(b, (i * 8) + j);
+ if (index < 64) {
+ uint64_t mask = (1ull << (63 - (index & 0x3F)));
+ if (a->u64[VBPERMQ_DW(index)] & mask) {
+ perm |= (0x80 >> j);
+ }
+ }
+ }
+ r->u64[i] = perm;
+ }
You need to care for overlap between R vs {A,B}.
r~
