From: Mateja Marjanovic <mateja.marjanovic@rt-rk.com>
To: qemu-devel@nongnu.org
Cc: aurelien@aurel32.net, amarkovic@wavecomp.com, arikalo@wavecomp.com
Subject: [Qemu-devel] [PATCH v2 0/2] target/mips: Adjusting the results when dividing by zero in MSA instructions
Date: Tue, 2 Apr 2019 14:11:48 +0200 [thread overview]
Message-ID: <1554207110-9113-1-git-send-email-mateja.marjanovic@rt-rk.com> (raw)
From: Mateja Marjanovic <Mateja.Marjanovic@rt-rk.com>
The behaviour when executing DIV_<U|S>.<B|H|W|D> and MOD_<U|S>.<B|H|W|D>
differs on a referent hardware (FPGA MIPS 64 r6, little endian) and on
QEMU, when the divisor is equal to zero. That is not a real bug, because
the behaviour in that case is unpredictable (references in commit
messages).
v2:
- Add consistency in DIV_U.df and DIV_S.df helper implementation
- Adjust the commit messages and the cover letter, making them
clearer and more understandable
- Correct the spelling in the commit messages and in the cover
letter
Mateja Marjanovic (2):
target/mips: Make the results of DIV_<U|S>.<B|H|W|D> the same as on
hardware
target/mips: Make the results of MOD_<U|S>.<B|H|W|D> the same as on
hardware
target/mips/msa_helper.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
--
2.7.4
next reply other threads:[~2019-04-02 12:12 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-02 12:11 Mateja Marjanovic [this message]
2019-04-02 12:11 ` [Qemu-devel] [PATCH v2 1/2] target/mips: Make the results of DIV_<U|S>.<B|H|W|D> the same as on hardware Mateja Marjanovic
2019-04-02 12:51 ` Aleksandar Markovic
2019-04-02 15:08 ` Philippe Mathieu-Daudé
2019-04-02 15:26 ` Mateja Marjanovic
2019-04-02 12:11 ` [Qemu-devel] [PATCH v2 2/2] target/mips: Make the results of MOD_<U|S>.<B|H|W|D> " Mateja Marjanovic
2019-04-02 12:50 ` Aleksandar Markovic
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