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target/ppc: Fix vslv and vsrv

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vslv and vsrv are broken on little endian, we append 00 to the
high byte not the low byte. Fix it by using the VsrB() accessor.

Signed-off-by: Anton Blanchard <anton@ozlabs.org>
Message-Id: <20190507004811.29968-6-anton@ozlabs.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Anton Blanchard 2019-05-07 10:48:08 +10:00 committed by David Gibson
parent d47a751ada
commit 63be02fc69
1 changed files with 7 additions and 7 deletions
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14
target/ppc/int_helper.c
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@ -1815,10 +1815,10 @@ void helper_vslv(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
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 */
shift = b->VsrB(i) & 0x7; /* extract shift value */
bytes = (a->VsrB(i) << 8) + /* extract adjacent bytes */
(((i + 1) < size) ? a->VsrB(i + 1) : 0);
r->VsrB(i) = (bytes << shift) >> 8; /* shift and store result */
}
}
@ -1833,10 +1833,10 @@ void helper_vsrv(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
* order will guarantee that computed result is not fed back.
*/
for (i = ARRAY_SIZE(r->u8) - 1; i >= 0; i--) {
shift = b->u8[i] & 0x7; /* extract shift value */
bytes = ((i ? a->u8[i - 1] : 0) << 8) + a->u8[i];
shift = b->VsrB(i) & 0x7; /* extract shift value */
bytes = ((i ? a->VsrB(i - 1) : 0) << 8) + a->VsrB(i);
/* extract adjacent bytes */
r->u8[i] = (bytes >> shift) & 0xFF; /* shift and store result */
r->VsrB(i) = (bytes >> shift) & 0xFF; /* shift and store result */
}
}