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authorJoseph Myers <joseph@codesourcery.com>2020-06-08 16:57:16 +0000
committerPaolo Bonzini <pbonzini@redhat.com>2020-06-26 09:39:38 -0400
commit445810ec915687d37b8ae0ef8d7340ab4a153efa (patch)
treebc84f9b462e85bf3340972ca57a14be6da92e233 /include/fpu/softfloat.h
parent566601f1f9d972e44214696d3cb320e6c18880aa (diff)
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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/fpu/softfloat.h')
-rw-r--r--include/fpu/softfloat.h3
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);