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From: "msc at linux dot ibm.com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/28532] powerpc64[le]: CFI for assembly templated syscalls
 is incorrect
Date: Fri, 17 Dec 2021 20:24:59 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D28532

Matheus Castanho <msc at linux dot ibm.com> changed:

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

--- Comment #4 from Matheus Castanho <msc at linux dot ibm.com> ---
New failing tests are now fixed by:

commit ae91d3df24a4a1b1f264d101a71a298bff310d14
Author: Matheus Castanho <msc@linux.ibm.com>
Date:   Wed Dec 1 11:14:40 2021 -0300

    powerpc64[le]: Allocate extra stack frame on syscall.S

    The syscall function does not allocate the extra stack frame for scv li=
ke
other
    assembly syscalls using DO_CALL_SCV. So after commit d120fb9941 changed=
 the
    offset that is used to save LR, syscall ended up using an invalid offse=
t,
    causing regressions on powerpc64. So make sure the extra stack frame is
    allocated in syscall.S as well to make it consistent with other uses of
    DO_CALL_SCV and avoid similar issues in the future.

    Tested on powerpc, powerpc64, and powerpc64le (with and without scv)

    Reviewed-by: Raphael M Zinsly <rzinsly@linux.ibm.com>

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