diff options
| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2023-07-24 10:15:57 +0200 |
|---|---|---|
| committer | Michael Tokarev <mjt@tls.msk.ru> | 2023-07-31 09:10:51 +0300 |
| commit | 76507abbe1dbdce7a3ecd7a7b19418b38ce6666c (patch) | |
| tree | 120e8aff78bda4a88da36df12c94c3b49668a2e9 /target | |
| parent | e5e8a8606425d58c67f2deddc0d78a530e713ce6 (diff) | |
target/s390x: Fix ICM with M3=0
When the mask is zero, access exceptions should still be recognized for
1 byte at the second-operand address. CC should be set to 0.
Cc: qemu-stable@nongnu.org
Fixes: e023e832d0ac ("s390x: translate engine for s390x CPU")
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20230724082032.66864-5-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit a2025557ed4d8d5e6a4d0dd681717c390f51f5be)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Diffstat (limited to 'target')
| -rw-r--r-- | target/s390x/tcg/translate.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/target/s390x/tcg/translate.c b/target/s390x/tcg/translate.c index f005539861..9e9fa3cef0 100644 --- a/target/s390x/tcg/translate.c +++ b/target/s390x/tcg/translate.c @@ -2525,6 +2525,12 @@ static DisasJumpType op_icm(DisasContext *s, DisasOps *o) ccm = ((1ull << len) - 1) << pos; break; + case 0: + /* Recognize access exceptions for the first byte. */ + tcg_gen_qemu_ld_i64(tmp, o->in2, get_mem_index(s), MO_UB); + gen_op_movi_cc(s, 0); + return DISAS_NEXT; + default: /* This is going to be a sequence of loads and inserts. */ pos = base + 32 - 8; |