[Bug gas/15220] New: MIPS/Loongson 2F: Wrong opcodes for madd.ps/msub.ps/nmadd.ps/nmsub.ps

[aaro.koskinen at iki dot fi]

http://sourceware.org/bugzilla/show_bug.cgi?id=15220

 Bug #: 15220
   Summary: MIPS/Loongson 2F: Wrong opcodes for
madd.ps/msub.ps/nmadd.ps/nmsub.ps
   Product: binutils
   Version: 2.23
Status: NEW
  Severity: normal
  Priority: P2
 Component: gas
AssignedTo: unassig...@sourceware.org
ReportedBy: aaro.koski...@iki.fi
Classification: Unclassified


opcodes/mips-opc.c has wrong opcodes for the following INSN_LOONGSON_2F / IL2F
instructions:

madd.ps
msub.ps
nmadd.ps
nmsub.ps

The format field (25:21) should be 22 instead of 11.

This is probably caused by a documentation error in Loongson2FUserGuide
(http://dev.lemote.com/files/resource/documents/Loongson/ls2f/). The table in
page 96 shows the format for paired-single is 11, while the table in the page
157 tells it's 22.

Based on tests on 2F HW, 22 is the correct one.

The bug was originally discovered by Mark H Weaver and reported
here:
https://groups.google.com/forum/?fromgroups=#!topic/loongson-dev/VZ1yR9Tsr7o

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[Bug gold/14271] exception handling broken in combination with gcc static libs

[daniel at constexpr dot org]

http://sourceware.org/bugzilla/show_bug.cgi?id=14271

Daniel Scharrer  changed:

   What|Removed |Added

 CC||daniel at constexpr dot org

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[Bug ld/15217] branch-to-arm-from-thumb for typeless symbol is missing a stub

[vapier at gentoo dot org]

http://sourceware.org/bugzilla/show_bug.cgi?id=15217

Mike Frysinger  changed:

   What|Removed |Added

 CC||vapier at gentoo dot org

--- Comment #1 from Mike Frysinger  2013-03-03 
05:06:52 UTC ---
pretty sure this is Working As Intended and you need to fix your code:
http://sourceware.org/ml/binutils/2012-03/msg00125.html

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