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[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.1-11-g0f33053
- From: moore at sourceware dot org
- To: systemtap-cvs at sourceware dot org
- Date: 20 Jan 2010 17:09:49 -0000
- Subject: [SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.1-11-g0f33053
- Reply-to: systemtap at sourceware dot org
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from 4e6d866ff635108634f8d0156d21c171e0d056f4 (commit)
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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