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* [Bug libc/16922] New: MIPS *_SUB instruction macros in sys/asm.h are incorrect
@ 2014-05-07 20:07 sje at gcc dot gnu.org
  2014-05-07 20:16 ` [Bug libc/16922] " sje at gcc dot gnu.org
  2014-06-12 19:22 ` fweimer at redhat dot com
  0 siblings, 2 replies; 3+ messages in thread
From: sje at gcc dot gnu.org @ 2014-05-07 20:07 UTC (permalink / raw)
  To: glibc-bugs

https://sourceware.org/bugzilla/show_bug.cgi?id=16922

            Bug ID: 16922
           Summary: MIPS *_SUB instruction macros in sys/asm.h are
                    incorrect
           Product: glibc
           Version: 2.21
            Status: NEW
          Severity: minor
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: sje at gcc dot gnu.org
                CC: drepper.fsp at gmail dot com

Some of the *_SUB instruction macros in sysdeps/mips/sys/asm.h are defined to
do addition instructions instead of subtraction instructions.  I don't know why
this is but it seems obviously wrong and it is different then the definitions
in the linux kernel which do define these as subtract instructions
(arch/mips/include/asm/asm.h).

% grep SUB asm.h | grep add
# define INT_SUB    add
# define INT_SUB    dadd
# define LONG_SUB    add
# define LONG_SUB    dadd
# define PTR_SUB    add
# define PTR_SUB    add
# define PTR_SUB    dadd

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* [Bug libc/16922] MIPS *_SUB instruction macros in sys/asm.h are incorrect
  2014-05-07 20:07 [Bug libc/16922] New: MIPS *_SUB instruction macros in sys/asm.h are incorrect sje at gcc dot gnu.org
@ 2014-05-07 20:16 ` sje at gcc dot gnu.org
  2014-06-12 19:22 ` fweimer at redhat dot com
  1 sibling, 0 replies; 3+ messages in thread
From: sje at gcc dot gnu.org @ 2014-05-07 20:16 UTC (permalink / raw)
  To: glibc-bugs

https://sourceware.org/bugzilla/show_bug.cgi?id=16922

sje at gcc dot gnu.org <sje at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #1 from sje at gcc dot gnu.org <sje at gcc dot gnu.org> ---
Fixed with this checkin:

commit 5057ad3b503eb471b3113090ded9d1ad61759d62
Author: Steve Ellcey <sellcey@mips.com>
Date:   Wed May 7 13:10:48 2014 -0700

    2014-05-07  Steve Ellcey  <sellcey@mips.com>

        [BZ# 16922]
        * sysdeps/mips/sys/asm.h (INT_SUB): Fix definition.
        (LONG_SUB): Ditto.
        (PTR_SUB): Ditto.

I also added this bug to the list of fixed bugs in the NEWS file.

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* [Bug libc/16922] MIPS *_SUB instruction macros in sys/asm.h are incorrect
  2014-05-07 20:07 [Bug libc/16922] New: MIPS *_SUB instruction macros in sys/asm.h are incorrect sje at gcc dot gnu.org
  2014-05-07 20:16 ` [Bug libc/16922] " sje at gcc dot gnu.org
@ 2014-06-12 19:22 ` fweimer at redhat dot com
  1 sibling, 0 replies; 3+ messages in thread
From: fweimer at redhat dot com @ 2014-06-12 19:22 UTC (permalink / raw)
  To: glibc-bugs

https://sourceware.org/bugzilla/show_bug.cgi?id=16922

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|                            |security-

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end of thread, other threads:[~2014-06-12 19:22 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2014-05-07 20:07 [Bug libc/16922] New: MIPS *_SUB instruction macros in sys/asm.h are incorrect sje at gcc dot gnu.org
2014-05-07 20:16 ` [Bug libc/16922] " sje at gcc dot gnu.org
2014-06-12 19:22 ` fweimer at redhat dot com

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