aboutsummaryrefslogtreecommitdiff
path: root/target-ppc/int_helper.c
diff options
context:
space:
mode:
authorRajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>2016-09-06 10:34:09 +0530
committerDavid Gibson <david@gibson.dropbear.id.au>2016-09-23 10:29:40 +1000
commit01fe9a470c4c49a18c386f411278780dedb65ad6 (patch)
tree04655861f6b742f45873c6c633ff3d9e518f3c0d /target-ppc/int_helper.c
parenta5ad8fbf9d771d2accb583fc1eb58faf9931cfce (diff)
target-ppc: add vector bit permute doubleword instruction
Add vbpermd 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.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/target-ppc/int_helper.c b/target-ppc/int_helper.c
index 4d1582dba2..b12af95877 100644
--- a/target-ppc/int_helper.c
+++ b/target-ppc/int_helper.c
@@ -1128,12 +1128,32 @@ void helper_vperm(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b,
#if defined(HOST_WORDS_BIGENDIAN)
#define VBPERMQ_INDEX(avr, i) ((avr)->u8[(i)])
+#define VBPERMD_INDEX(i) (i)
#define VBPERMQ_DW(index) (((index) & 0x40) != 0)
+#define EXTRACT_BIT(avr, i, index) (extract64((avr)->u64[i], index, 1))
#else
#define VBPERMQ_INDEX(avr, i) ((avr)->u8[15-(i)])
+#define VBPERMD_INDEX(i) (1 - i)
#define VBPERMQ_DW(index) (((index) & 0x40) == 0)
+#define EXTRACT_BIT(avr, i, index) \
+ (extract64((avr)->u64[1 - i], 63 - index, 1))
#endif
+void helper_vbpermd(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
+{
+ int i, j;
+ ppc_avr_t result = { .u64 = { 0, 0 } };
+ VECTOR_FOR_INORDER_I(i, u64) {
+ for (j = 0; j < 8; j++) {
+ int index = VBPERMQ_INDEX(b, (i * 8) + j);
+ if (index < 64 && EXTRACT_BIT(a, i, index)) {
+ result.u64[VBPERMD_INDEX(i)] |= (0x80 >> j);
+ }
+ }
+ }
+ *r = result;
+}
+
void helper_vbpermq(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
{
int i;