[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.1-11-g0f33053

[moore@sourceware.org]

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- Log -----------------------------------------------------------------
commit 0f33053e1ebb5931f9dfbb6268aec57b7ce003da
Author: Tim Moore <timoore@redhat.com>
Date:   Wed Jan 20 18:05:26 2010 +0100

    use eh_frame_hdr table to speed up unwinding
    
    * runtime/sym.h (_stp_module): add unwind_hdr_addr member.
    * runtime/unwind.c (read_ptr_sect): Modification of read_pointer that
      also handles offsets from text or "data" sections.
      (read_pointer): Use it.
      (_stp_search_unwind_hdr): Use read_ptr_sect to calculate values that
      are relative to the .eh_frame_hdr section.
      (unwind_frame): Search the frame header if this is an eh frame.
    * translate.cxx (get_unwind_data): Get the eh_frame_hdr too.
      (dump_unwindsyms): Write out eh_frame_hdr stuff.

-----------------------------------------------------------------------

Summary of changes:
 runtime/sym.h    |    1 +
 runtime/unwind.c |   58 ++++++++++++++++++++++++++++++-----------
 translate.cxx    |   74 +++++++++++++++++++++++++++++++++++++++++++++--------
 3 files changed, 105 insertions(+), 28 deletions(-)


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systemtap: system-wide probe/trace tool