[Bug runtime/10139] .probes section disappears into debuginfo

[mjw at redhat dot com]

------- Additional Comments From mjw at redhat dot com  2009-05-14 17:19 -------
We now mark the .probes section as SHF_ALLOC and we search in both dwarf and
main elf files for a .probes section in case we hit on a binary build against an
older sdt.h

commit 01a419e428f33d115a72fa8eac1d808825d2cae5
Author: Mark Wielaard <mjw@redhat.com>
Date:   Thu May 14 19:07:10 2009 +0200

    PR10139 Mark .probes section SHF_ALLOC.
    
    * includes/sys/sdt.h (STAP_PROBE_DATA_): Mark .probes section SHF_ALLOC.
    * tapsets.cxx (dwarf_builder::build): Search in either dwarf or main elf
      file for .probes section.

Side note. We cannot easily make this a non-allocated SHT_NOTE. Those are kept
by stripping, but possibly not in all old tools (binutils strip from some years
ago). And SHT_NOTE means it's an ELF note, which has a standard header layout if
you don't use that format, all the normal ELF tools will tell you that there is
a corrupt section. So we would have to change the format of the section in that
case.

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


http://sourceware.org/bugzilla/show_bug.cgi?id=10139

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