| commit | 18c53e1e73197a24f9f4b66b1276eb9868db5bf0 | |
| author | Joseph Myers <joseph@codesourcery.com> | |
| Wed, 13 May 2020 23:51:09 +0000 (13 23:51 +0000) | ||
| committer | Paolo Bonzini <pbonzini@redhat.com> | |
| Wed, 10 Jun 2020 16:10:25 +0000 (10 12:10 -0400) | ||
| tree | bee7345ba6b19eafcb2e87e38cffc02ee8107445 | treesnapshot (tar.gz zip) |
| parent | 34b9cc076ff423023a779a04a9f7cd7c17372cbf | commitdiff |
target/i386: fix fbstp handling of negative zero
The fbstp implementation stores +0 when the rounded result should be
-0 because it compares an integer value with 0 to determine the sign.
Fix this by checking the sign bit of the operand instead.
Signed-off-by: Joseph Myers <joseph@codesourcery.com>
Message-Id: <alpine.DEB.2.21.2005132350230.11687@digraph.polyomino.org.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The fbstp implementation stores +0 when the rounded result should be
-0 because it compares an integer value with 0 to determine the sign.
Fix this by checking the sign bit of the operand instead.
Signed-off-by: Joseph Myers <joseph@codesourcery.com>
Message-Id: <alpine.DEB.2.21.2005132350230.11687@digraph.polyomino.org.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| target/i386/fpu_helper.c | diffblobblamehistory | |
| tests/tcg/i386/test-i386-fbstp.c | [new file with mode: 0644] | blob |