diff options
| author | Vivek Andrew Sha <vivekandrewsha@gmail.com> | 2016-07-28 23:44:16 +0530 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2016-09-07 12:40:11 +1000 |
| commit | 5644a17567596eea8c4e16a8087dab9cc0292c6f (patch) | |
| tree | 0f90b64457bb661e2e2df206cf1f411daf95a8f4 /target-ppc/int_helper.c | |
| parent | f7cc8466f1c29550b5ace0750813bc6c9190f604 (diff) | |
target-ppc: add vslv instruction
vslv: Vector Shift Left Variable
Signed-off-by: Vivek Andrew Sha <vivekandrewsha@gmail.com>
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
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 | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/target-ppc/int_helper.c b/target-ppc/int_helper.c index 9b4de6926b..12fe1448fa 100644 --- a/target-ppc/int_helper.c +++ b/target-ppc/int_helper.c @@ -1696,6 +1696,20 @@ VSL(w, u32, 0x1F) VSL(d, u64, 0x3F) #undef VSL +void helper_vslv(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) +{ + int i; + unsigned int shift, bytes, size; + + size = ARRAY_SIZE(r->u8); + for (i = 0; i < size; i++) { + shift = b->u8[i] & 0x7; /* extract shift value */ + bytes = (a->u8[i] << 8) + /* extract adjacent bytes */ + (((i + 1) < size) ? a->u8[i + 1] : 0); + r->u8[i] = (bytes << shift) >> 8; /* shift and store result */ + } +} + void helper_vsldoi(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, uint32_t shift) { int sh = shift & 0xf; |