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| author | Peter Maydell <peter.maydell@linaro.org> | 2011-02-15 13:44:45 +0000 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2011-02-20 17:43:01 +0100 |
| commit | 960e623bfd45c92ce165177b8a0e748867fe5878 (patch) | |
| tree | 3150944f5650a09e0be988bad87c1a2f72ce9c0a /target-arm | |
| parent | 51e3930fc7ae8d3cff1ff0ecfdd63403b4c20f36 (diff) | |
target-arm: Fix saturated values for Neon right shifts
Fix value returned by signed 8 and 16 bit qrshl helpers
when the result has saturated.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'target-arm')
| -rw-r--r-- | target-arm/neon_helper.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/target-arm/neon_helper.c b/target-arm/neon_helper.c index c97aa7dbd4..235a32c670 100644 --- a/target-arm/neon_helper.c +++ b/target-arm/neon_helper.c @@ -886,7 +886,10 @@ uint64_t HELPER(neon_qrshl_u64)(CPUState *env, uint64_t val, uint64_t shiftop) dest = src1 << tmp; \ if ((dest >> tmp) != src1) { \ SET_QC(); \ - dest = src1 >> 31; \ + dest = (uint32_t)(1 << (sizeof(src1) * 8 - 1)); \ + if (src1 > 0) { \ + dest--; \ + } \ } \ }} while (0) NEON_VOP_ENV(qrshl_s8, neon_s8, 4) |