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target-arm: Fix VQSHL of signed 64 bit values by shift counts >= 64 

VQSHL of a signed 64 bit non-zero value by a shift count >= 64 should
saturate; return the correct value in this case.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Peter Maydell 2010-12-07 14:13:43 +00:00 committed by Aurelien Jarno
parent 4c9b70aeca
commit eb7a3d7964
1 changed files with 1 additions and 1 deletions
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2
target-arm/neon_helper.c
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@ -608,7 +608,7 @@ uint64_t HELPER(neon_qshl_s64)(CPUState *env, uint64_t valop, uint64_t shiftop)
if (shift >= 64) {
if (val) {
SET_QC();
val = (val >> 63) & ~SIGNBIT64;
val = (val >> 63) ^ ~SIGNBIT64;
}
} else if (shift <= -64) {
val >>= 63;