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s390x/tcg: Fix m5 vs. m4 field for VECTOR MULTIPLY SUM LOGICAL

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The element size is located in m5, not in m4. As there is no m4, qemu
currently crashes with an assertion, trying to lookup that field.

Reproduced and tested via GO, which ends up using VMSL once the
Vector enhancements facility is around for verifying certificates with
elliptic curves.

Reported-by: Jonathan Albrecht <jonathan.albrecht@linux.vnet.ibm.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/449
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Fixes: 8c18fa5b3e ("s390x/tcg: Implement VECTOR MULTIPLY SUM LOGICAL")
Message-Id: <20210705090341.58289-1-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
David Hildenbrand 2021-07-05 11:03:41 +02:00 committed by Cornelia Huck
parent 2876105704
commit af4ba0ec8f
1 changed files with 1 additions and 1 deletions
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2
target/s390x/translate_vx.c.inc
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@ -1783,7 +1783,7 @@ static DisasJumpType op_vmsl(DisasContext *s, DisasOps *o)
{
TCGv_i64 l1, h1, l2, h2;
if (get_field(s, m4) != ES_64) {
if (get_field(s, m5) != ES_64) {
gen_program_exception(s, PGM_SPECIFICATION);
return DISAS_NORETURN;
}