| commit | cf122bf8d2732d5d8647901ebaea596668aaaa3a | |
| author | Mateja Marjanovic <Mateja.Marjanovic@rt-rk.com> | |
| Tue, 2 Apr 2019 12:11:50 +0000 (2 14:11 +0200) | ||
| committer | Aleksandar Markovic <amarkovic@wavecomp.com> | |
| Sun, 26 May 2019 15:32:37 +0000 (26 17:32 +0200) | ||
| tree | 5271ce67ac3ce3fa918b9376cb1b5dd142c6ba29 | treesnapshot (tar.gz zip) |
| parent | d2a40a5f6938f30f44b536e997e1e89bb62b971c | commitdiff |
target/mips: Make the results of MOD_<U|S>.<B|H|W|D> the same as on hardware
MSA instructions MOD_<U|S>.<B|H|W|D> when dividing by zero,
didn't return the same value when executed on a referent hardware
(FPGA MIPS 64 r6, little endian) and when executed on QEMU, which
is not a real bug, because the result when dividing by zero is
UNPREDICTABLE [1] (page 255, 256).
[1] MIPS Architecture for Programmers
Volume IV-j: The MIPS64 SIMD
Architecture Module, Revision 1.12
Signed-off-by: Mateja Marjanovic <mateja.marjanovic@rt-rk.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1554207110-9113-3-git-send-email-mateja.marjanovic@rt-rk.com>
MSA instructions MOD_<U|S>.<B|H|W|D> when dividing by zero,
didn't return the same value when executed on a referent hardware
(FPGA MIPS 64 r6, little endian) and when executed on QEMU, which
is not a real bug, because the result when dividing by zero is
UNPREDICTABLE [1] (page 255, 256).
[1] MIPS Architecture for Programmers
Volume IV-j: The MIPS64 SIMD
Architecture Module, Revision 1.12
Signed-off-by: Mateja Marjanovic <mateja.marjanovic@rt-rk.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1554207110-9113-3-git-send-email-mateja.marjanovic@rt-rk.com>
| target/mips/msa_helper.c | diffblobblamehistory |