diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2024-05-24 22:04:03 -0700 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2024-06-05 09:05:10 -0700 |
| commit | b5c960470d0d7a976aa83e6e3a9b0fdc1d83c7cd (patch) | |
| tree | db972e42cd6b7fa8a4d513816bd42364c5fa6df4 /target/sparc/vis_helper.c | |
| parent | 04d5bf30419412cfbf984e90938b411e22fd8916 (diff) | |
target/sparc: Fix helper_fmul8ulx16
This operation returns the high 16 bits of a 24-bit multiply
that has been sign-extended to 32 bits.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'target/sparc/vis_helper.c')
| -rw-r--r-- | target/sparc/vis_helper.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/target/sparc/vis_helper.c b/target/sparc/vis_helper.c index f46fcf1f6a..41312deda4 100644 --- a/target/sparc/vis_helper.c +++ b/target/sparc/vis_helper.c @@ -174,10 +174,10 @@ uint64_t helper_fmul8ulx16(uint64_t src1, uint64_t src2) s.ll = src1; d.ll = src2; - d.VIS_W64(0) = do_ms16b(s.VIS_B64(0), d.VIS_SW64(0)); - d.VIS_W64(1) = do_ms16b(s.VIS_B64(2), d.VIS_SW64(1)); - d.VIS_W64(2) = do_ms16b(s.VIS_B64(4), d.VIS_SW64(2)); - d.VIS_W64(3) = do_ms16b(s.VIS_B64(6), d.VIS_SW64(3)); + d.VIS_W64(0) = (s.VIS_B64(0) * d.VIS_SW64(0) + 0x8000) >> 16; + d.VIS_W64(1) = (s.VIS_B64(2) * d.VIS_SW64(1) + 0x8000) >> 16; + d.VIS_W64(2) = (s.VIS_B64(4) * d.VIS_SW64(2) + 0x8000) >> 16; + d.VIS_W64(3) = (s.VIS_B64(6) * d.VIS_SW64(3) + 0x8000) >> 16; return d.ll; } |