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[Stable-7.2.6 12/37] target/s390x: Use a 16-bit immediate in VREP
From: |
Michael Tokarev |
Subject: |
[Stable-7.2.6 12/37] target/s390x: Use a 16-bit immediate in VREP |
Date: |
Sat, 9 Sep 2023 16:04:42 +0300 |
From: Ilya Leoshkevich <iii@linux.ibm.com>
Unlike most other instructions that contain an immediate element index,
VREP's one is 16-bit, and not 4-bit. The code uses only 8 bits, so
using, e.g., 0x101 does not lead to a specification exception.
Fix by checking all 16 bits.
Cc: qemu-stable@nongnu.org
Fixes: 28d08731b1d8 ("s390x/tcg: Implement VECTOR REPLICATE")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20230807163459.849766-1-iii@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit 23e87d419f347b6b5f4da3bf70d222acc24cdb64)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff --git a/target/s390x/tcg/translate_vx.c.inc
b/target/s390x/tcg/translate_vx.c.inc
index 79e2bbe0a7..db9b35d105 100644
--- a/target/s390x/tcg/translate_vx.c.inc
+++ b/target/s390x/tcg/translate_vx.c.inc
@@ -57,7 +57,7 @@
#define FPF_LONG 3
#define FPF_EXT 4
-static inline bool valid_vec_element(uint8_t enr, MemOp es)
+static inline bool valid_vec_element(uint16_t enr, MemOp es)
{
return !(enr & ~(NUM_VEC_ELEMENTS(es) - 1));
}
@@ -1014,7 +1014,7 @@ static DisasJumpType op_vpdi(DisasContext *s, DisasOps *o)
static DisasJumpType op_vrep(DisasContext *s, DisasOps *o)
{
- const uint8_t enr = get_field(s, i2);
+ const uint16_t enr = get_field(s, i2);
const uint8_t es = get_field(s, m4);
if (es > ES_64 || !valid_vec_element(enr, es)) {
--
2.39.2
- [Stable-7.2.6 02/37] hw/smbios: Fix smbios_smp_sockets caculation, (continued)
- [Stable-7.2.6 02/37] hw/smbios: Fix smbios_smp_sockets caculation, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 03/37] hw/smbios: Fix thread count in type4, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 04/37] hw/smbios: Fix core count in type4, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 05/37] dump: kdump-zlib data pages not dumped with pvtime/aarch64, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 06/37] hw/nvme: fix CRC64 for guard tag, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 07/37] linux-user/elfload: Set V in ELF_HWCAP for RISC-V, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 08/37] include/exec/user: Set ABI_LLONG_ALIGNMENT to 4 for microblaze, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 09/37] include/exec/user: Set ABI_LLONG_ALIGNMENT to 4 for nios2, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 10/37] Fixed incorrect LLONG alignment for openrisc and cris, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 11/37] target/s390x: Fix the "ignored match" case in VSTRS, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 12/37] target/s390x: Use a 16-bit immediate in VREP,
Michael Tokarev <=
- [Stable-7.2.6 13/37] target/s390x: Fix VSTL with a large length, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 14/37] target/s390x: Check reserved bits of VFMIN/VFMAX's M5, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 15/37] include/hw/virtio/virtio-gpu: Fix virtio-gpu with blob on big endian hosts, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 16/37] kvm: Introduce kvm_arch_get_default_type hook, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 17/37] accel/kvm: Specify default IPA size for arm64, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 18/37] target/arm: Fix SME ST1Q, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 19/37] target/arm: Fix 64-bit SSRA, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 20/37] docs/about/license: Update LICENSE URL, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 21/37] block-migration: Ensure we don't crash during migration cleanup, Michael Tokarev, 2023/09/09
- [Stable-7.2.6 22/37] hw/ppc/e500: fix broken snapshot replay, Michael Tokarev, 2023/09/09