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[PULL,01/39] target/arm: Make VQDMULL undefined when U=1

Message ID 20200504123309.3808-2-peter.maydell@linaro.org
State Accepted
Commit ab553ef74ee52c0889679d0bd0da084aaf938f5c
Headers show
Series target-arm queue | expand

Commit Message

Peter Maydell May 4, 2020, 12:32 p.m. UTC 
From: Fredrik Strupe <fredrik@strupe.net>


According to Arm ARM, VQDMULL is only valid when U=0, while having
U=1 is unallocated.

Signed-off-by: Fredrik Strupe <fredrik@strupe.net>

Fixes: 695272dcb976 ("target-arm: Handle UNDEF cases for Neon 3-regs-different-widths")
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

---
 target/arm/translate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
2.20.1
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Patch

diff --git a/target/arm/translate.c b/target/arm/translate.c
index d4ad2028f12..e3fc7924428 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -6016,7 +6016,7 @@  static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
                     {0, 0, 0, 0}, /* VMLSL */
                     {0, 0, 0, 9}, /* VQDMLSL */
                     {0, 0, 0, 0}, /* Integer VMULL */
-                    {0, 0, 0, 1}, /* VQDMULL */
+                    {0, 0, 0, 9}, /* VQDMULL */
                     {0, 0, 0, 0xa}, /* Polynomial VMULL */
                     {0, 0, 0, 7}, /* Reserved: always UNDEF */
                 };