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author | Eric B Munson <ebmunson@us.ibm.com> | 2010-06-14 14:56:33 +0100 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2010-06-17 10:06:27 -0300 |
commit | 70c3856b2f1304e0abc65f1b96a8c60ddfc0fb9e (patch) | |
tree | 69230e53848da5a55e6148f57657c6bc3b531123 /tools/perf/Documentation | |
parent | cf103a14dd2ab23f847e998c8881ea4a5f8090bf (diff) | |
download | kernel_samsung_smdk4412-70c3856b2f1304e0abc65f1b96a8c60ddfc0fb9e.zip kernel_samsung_smdk4412-70c3856b2f1304e0abc65f1b96a8c60ddfc0fb9e.tar.gz kernel_samsung_smdk4412-70c3856b2f1304e0abc65f1b96a8c60ddfc0fb9e.tar.bz2 |
perf symbols: Function descriptor symbol lookup
Currently symbol resolution does not work for 64-bit programs on architectures
that use function descriptors such as ppc64.
The problem is that a symbol doesn't point to a text address, it points to a
data area that contains (amongst other things) a pointer to the text address.
We look for a section called ".opd" which is the function descriptor area. To
create the full symbol table, when we see a symbol in the function descriptor
section we load the first pointer and use that as the text address.
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <1276523793-15422-1-git-send-email-ebmunson@us.ibm.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Eric B Munson <ebmunson@us.ibm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation')
0 files changed, 0 insertions, 0 deletions