| commit | 08e185cadb24b038574dad676d4dae8488ba8b6e | |
| author | Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br> | |
| Fri, 5 Aug 2022 14:15:22 +0000 (5 11:15 -0300) | ||
| committer | Daniel Henrique Barboza <danielhb413@gmail.com> | |
| Wed, 31 Aug 2022 17:08:05 +0000 (31 14:08 -0300) | ||
| tree | c7e29faf9a3e75f097899d53efcd25d5ee33a486 | treesnapshot (tar.gz zip) |
| parent | c40da5c6fb6dd243e906900de1d22cf20e32a8cd | commitdiff |
target/ppc: Bugfix FP when OE/UE are set
When an overflow exception occurs and OE is set the intermediate result
should be adjusted (by subtracting from the exponent) to avoid rounding
to inf. The same applies to an underflow exceptionion and UE (but adding
to the exponent). To do this set the fp_status.rebias_overflow when OE
is set and fp_status.rebias_underflow when UE is set as the FPU will
recalculate in case of a overflow/underflow if the according rebias* is
set.
Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220805141522.412864-3-lucas.araujo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
When an overflow exception occurs and OE is set the intermediate result
should be adjusted (by subtracting from the exponent) to avoid rounding
to inf. The same applies to an underflow exceptionion and UE (but adding
to the exponent). To do this set the fp_status.rebias_overflow when OE
is set and fp_status.rebias_underflow when UE is set as the FPU will
recalculate in case of a overflow/underflow if the according rebias* is
set.
Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220805141522.412864-3-lucas.araujo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
| target/ppc/cpu.c | diffblobblamehistory | |
| target/ppc/fpu_helper.c | diffblobblamehistory |