From: Ilya Leoshkevich <iii@linux.ibm.com>
To: Richard Henderson <richard.henderson@linaro.org>,
David Hildenbrand <david@redhat.com>,
Cornelia Huck <cohuck@redhat.com>, Thomas Huth <thuth@redhat.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>,
qemu-s390x@nongnu.org, qemu-devel@nongnu.org,
Ilya Leoshkevich <iii@linux.ibm.com>
Subject: [PATCH v3 1/5] target/s390x: Fix SLDA sign bit index
Date: Wed, 12 Jan 2022 14:17:47 +0100 [thread overview]
Message-ID: <20220112131751.226011-2-iii@linux.ibm.com> (raw)
In-Reply-To: <20220112131751.226011-1-iii@linux.ibm.com>
SLDA operates on 64-bit values, so its sign bit index should be 63,
not 31.
Fixes: a79ba3398a0a ("target-s390: Convert SHIFT DOUBLE")
Reported-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
---
target/s390x/tcg/insn-data.def | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target/s390x/tcg/insn-data.def b/target/s390x/tcg/insn-data.def
index f0af458aee..90c753068c 100644
--- a/target/s390x/tcg/insn-data.def
+++ b/target/s390x/tcg/insn-data.def
@@ -800,7 +800,7 @@
C(0xebde, SRLK, RSY_a, DO, r3_32u, sh32, new, r1_32, srl, 0)
C(0xeb0c, SRLG, RSY_a, Z, r3_o, sh64, r1, 0, srl, 0)
/* SHIFT LEFT DOUBLE */
- D(0x8f00, SLDA, RS_a, Z, r1_D32, sh64, new, r1_D32, sla, 0, 31)
+ D(0x8f00, SLDA, RS_a, Z, r1_D32, sh64, new, r1_D32, sla, 0, 63)
/* SHIFT LEFT DOUBLE LOGICAL */
C(0x8d00, SLDL, RS_a, Z, r1_D32, sh64, new, r1_D32, sll, 0)
/* SHIFT RIGHT DOUBLE */
--
2.31.1
next prev parent reply other threads:[~2022-01-12 14:26 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-12 13:17 [PATCH v3 0/5] target/s390x: Fix shift instructions Ilya Leoshkevich
2022-01-12 13:17 ` Ilya Leoshkevich [this message]
2022-01-12 13:17 ` [PATCH v3 2/5] target/s390x: Fix SRDA CC calculation Ilya Leoshkevich
2022-01-12 15:57 ` David Hildenbrand
2022-01-12 13:17 ` [PATCH v3 3/5] target/s390x: Fix cc_calc_sla_64() missing overflows Ilya Leoshkevich
2022-01-12 13:17 ` [PATCH v3 4/5] target/s390x: Fix shifting 32-bit values for more than 31 bits Ilya Leoshkevich
2022-01-12 15:56 ` David Hildenbrand
2022-01-12 13:17 ` [PATCH v3 5/5] tests/tcg/s390x: Test shift instructions Ilya Leoshkevich
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