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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-10-12 03:45:55 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-10-12 03:49:40 -0700 |
| commit | d165ca64980f90ccace088670652cc203d1b5411 (patch) | |
| tree | 1bedb28f69cccae6e1a7e5861536467495ab4d10 /ChangeLog | |
| parent | bc9620d040b7494f457ccb750c9797b47ed76ada (diff) | |
| download | glibc-d165ca64980f90ccace088670652cc203d1b5411.zip glibc-d165ca64980f90ccace088670652cc203d1b5411.tar.gz glibc-d165ca64980f90ccace088670652cc203d1b5411.tar.bz2 | |
Support profiling PIE [BZ #22284]
Since PIE can be loaded at any address, we need to subtract load address
from PCs.
[BZ #22284]
* gmon/Makefile [$(have-fpie)$(build-shared) == yesyes] (tests,
tests-pie): Add tst-gmon-pie.
(CFLAGS-tst-gmon-pie.c): New.
(CRT-tst-gmon-pie): Likewise.
(tst-gmon-pie-ENV): Likewise.
[$(have-fpie)$(build-shared) == yesyes] (tests-special): Likewise.
($(objpfx)tst-gmon-pie.out): Likewise.
(clean-tst-gmon-pie-data): Likewise.
($(objpfx)tst-gmon-pie-gprof.out): Likewise.
* gmon/gmon.c [PIC]: Include <link.h>.
[PIC] (callback): New function.
(write_hist): Add an argument for load address. Subtract load
address from PCs.
(write_call_graph): Likewise.
(write_gmon): Call __dl_iterate_phdr to get load address, pass
it to write_hist and write_call_graph.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 20 |
1 files changed, 20 insertions, 0 deletions
@@ -1,3 +1,23 @@ +2017-10-12 H.J. Lu <hongjiu.lu@intel.com> + + [BZ #22284] + * gmon/Makefile [$(have-fpie)$(build-shared) == yesyes] (tests, + tests-pie): Add tst-gmon-pie. + (CFLAGS-tst-gmon-pie.c): New. + (CRT-tst-gmon-pie): Likewise. + (tst-gmon-pie-ENV): Likewise. + [$(have-fpie)$(build-shared) == yesyes] (tests-special): Likewise. + ($(objpfx)tst-gmon-pie.out): Likewise. + (clean-tst-gmon-pie-data): Likewise. + ($(objpfx)tst-gmon-pie-gprof.out): Likewise. + * gmon/gmon.c [PIC]: Include <link.h>. + [PIC] (callback): New function. + (write_hist): Add an argument for load address. Subtract load + address from PCs. + (write_call_graph): Likewise. + (write_gmon): Call __dl_iterate_phdr to get load address, pass + it to write_hist and write_call_graph. + 2017-10-11 Joseph Myers <joseph@codesourcery.com> * math/Makefile (test-types-basic): New variable. |