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| author | Joseph Myers <joseph@codesourcery.com> | 2020-06-08 16:57:16 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-06-26 09:39:38 -0400 |
| commit | 445810ec915687d37b8ae0ef8d7340ab4a153efa (patch) | |
| tree | bc84f9b462e85bf3340972ca57a14be6da92e233 /include | |
| parent | 566601f1f9d972e44214696d3cb320e6c18880aa (diff) | |
| download | qemu-445810ec915687d37b8ae0ef8d7340ab4a153efa.zip qemu-445810ec915687d37b8ae0ef8d7340ab4a153efa.tar.gz qemu-445810ec915687d37b8ae0ef8d7340ab4a153efa.tar.bz2 | |
softfloat: return low bits of quotient from floatx80_modrem
Both x87 and m68k need the low parts of the quotient for their
remainder operations. Arrange for floatx80_modrem to track those bits
and return them via a pointer.
The architectures using float32_rem and float64_rem do not appear to
need this information, so the *_rem interface is left unchanged and
the information returned only from floatx80_modrem. The logic used to
determine the low 7 bits of the quotient for m68k
(target/m68k/fpu_helper.c:make_quotient) appears completely bogus (it
looks at the result of converting the remainder to integer, the
quotient having been discarded by that point); this patch does not
change that, but the m68k maintainers may wish to do so.
Signed-off-by: Joseph Myers <joseph@codesourcery.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <alpine.DEB.2.21.2006081656500.23637@digraph.polyomino.org.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/fpu/softfloat.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h index bff6934..ff4e260 100644 --- a/include/fpu/softfloat.h +++ b/include/fpu/softfloat.h @@ -687,7 +687,8 @@ floatx80 floatx80_add(floatx80, floatx80, float_status *status); floatx80 floatx80_sub(floatx80, floatx80, float_status *status); floatx80 floatx80_mul(floatx80, floatx80, float_status *status); floatx80 floatx80_div(floatx80, floatx80, float_status *status); -floatx80 floatx80_modrem(floatx80, floatx80, bool, float_status *status); +floatx80 floatx80_modrem(floatx80, floatx80, bool, uint64_t *, + float_status *status); floatx80 floatx80_mod(floatx80, floatx80, float_status *status); floatx80 floatx80_rem(floatx80, floatx80, float_status *status); floatx80 floatx80_sqrt(floatx80, float_status *status); |