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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug tdep/14222] New: insufficient stack alignment
Date: Mon, 11 Jun 2012 19:03:00 -0000
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http://sourceware.org/bugzilla/show_bug.cgi?id=14222

             Bug #: 14222
           Summary: insufficient stack alignment
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: tdep
        AssignedTo: unassigned@sourceware.org
        ReportedBy: jan.kratochvil@redhat.com
    Classification: Unclassified
            Target: i386-unknown-linux-gnu


GCC since 4.6 keeps stack aligned to 32 bytes (128 bits).
http://groups.google.com/group/ia32-abi/browse_thread/thread/4f9b3e5069943bf1

AFAIK there is neither Intel CPUs nor glibc requirement for it, 16 bytes
alignment would be sufficient.

amd64-tdep.c already keeps 16 byte alignment but i386-tdep.c does not.
Proposing to increase alignment of both to 32 bytes in all cases.

This is KFAIL tracker for: gdb.arch/i386-sse-stack-align.exp

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