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target/ppc: Fix vsum2sws 

A recent cleanup changed the pre zeroing of the result from 64 bit
to 32 bit operations:

-        result.u64[i] = 0;
+        result.VsrW(i) = 0;

This corrupts the result.

Fixes: 60594fea29 ("target/ppc: remove various HOST_WORDS_BIGENDIAN hacks in int_helper.c")
Signed-off-by: Anton Blanchard <anton@ozlabs.org>
Message-Id: <20190507004811.29968-9-anton@ozlabs.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
(upstream commit 7fa0ddc1d6)
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
stable-4.0
Anton Blanchard 2019-06-04 20:01:14 +01:00 committed by Michael Roth
parent da3bd13802
commit b6159fc9a6
1 changed files with 1 additions and 1 deletions
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2
target/ppc/int_helper.c
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@ -2030,7 +2030,7 @@ void helper_vsum2sws(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
for (i = 0; i < ARRAY_SIZE(r->u64); i++) {
int64_t t = (int64_t)b->VsrSW(upper + i * 2);
result.VsrW(i) = 0;
result.VsrD(i) = 0;
for (j = 0; j < ARRAY_SIZE(r->u64); j++) {
t += a->VsrSW(2 * i + j);
}