OpenE2K/dwarves
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
1,266 Commits 1 Branch 0 Tags 3.4 MiB
C 89.1%
Python 4.3%
Roff 4.1%
CMake 1.9%
Shell 0.5%
Other 0.1%
0987266cd9
Go to file
Arnaldo Carvalho de Melo 0987266cd9 fprintf: Deal with zero sized arrays in the midle of a union 
gcc dislikes invalid C:

  /home/acme/git/build/v5.1-rc4+/fs/ceph/export.o
  /tmp/fullcircle.CvAfpM.c:591:22: error: flexible array member in union
     __u32              raw[];                /*     0     0 */
                        ^~~
Before:

  $ pahole -C fid /home/acme/git/build/v5.1-rc4+/fs/ceph/export.o
  struct fid {
  	union {
  		struct {
  			u32        ino;                  /*     0     4 */
  			u32        gen;                  /*     4     4 */
  			u32        parent_ino;           /*     8     4 */
  			u32        parent_gen;           /*    12     4 */
  		} i32;                                   /*     0    16 */
  		struct {
  			u32        block;                /*     0     4 */
  			u16        partref;              /*     4     2 */
  			u16        parent_partref;       /*     6     2 */
  			u32        generation;           /*     8     4 */
  			u32        parent_block;         /*    12     4 */
  			u32        parent_generation;    /*    16     4 */
  		} udf;                                   /*     0    20 */
  		__u32              raw[];                /*     0     0 */
  	};                                               /*     0    20 */

  	/* size: 20, cachelines: 1, members: 1 */
  	/* last cacheline: 20 bytes */
  };
  $

After:

  $ pahole -C fid /home/acme/git/build/v5.1-rc4+/fs/ceph/export.o
  struct fid {
  	union {
  		struct {
  			u32        ino;                  /*     0     4 */
  			u32        gen;                  /*     4     4 */
  			u32        parent_ino;           /*     8     4 */
  			u32        parent_gen;           /*    12     4 */
  		} i32;                                   /*     0    16 */
  		struct {
  			u32        block;                /*     0     4 */
  			u16        partref;              /*     4     2 */
  			u16        parent_partref;       /*     6     2 */
  			u32        generation;           /*     8     4 */
  			u32        parent_block;         /*    12     4 */
  			u32        parent_generation;    /*    16     4 */
  		} udf;                                   /*     0    20 */
  		__u32              raw[0];               /*     0     0 */
  	};                                               /*     0    20 */

  	/* size: 20, cachelines: 1, members: 1 */
  	/* last cacheline: 20 bytes */
  };
  $

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-04-15 17:09:03 -03:00
cmake/modules cmake: Add comments explaining build_id and fedora/rh detection 2009-06-27 13:32:20 -03:00
lib libbpf: Sync in latest libbpf sources 2019-03-29 15:53:13 -03:00
man-pages fprintf: Allow suppressing the inferred __attribute__((__packed__)) 2019-04-15 15:01:53 -03:00
ostra [OSTRA]: Change ostra-cg license to GPLv2 2007-12-24 12:25:17 -02:00
rpm/SPECS v1.12 - New Release 2018-08-16 16:15:27 -03:00
.gitignore pahole: Add build dir, config.h to .gitignore 2019-02-11 12:55:46 -03:00
.gitmodules pahole: add libbpf as submodule under lib/bpf 2019-02-11 12:56:40 -03:00
btf_encoder.c dwarf_loader: Use DWARF recommended uniform bit offset scheme 2019-03-29 15:55:37 -03:00
btf_encoder.h Fixup copyright notices for BTF files authored by Facebook engineers 2019-01-18 20:34:05 -03:00
btf_loader.c dwarf_loader: Use DWARF recommended uniform bit offset scheme 2019-03-29 15:55:37 -03:00
btfdiff fprintf: Allow suppressing the inferred __attribute__((__packed__)) 2019-04-15 15:01:53 -03:00
CMakeLists.txt libbpf: Build as PIC and statically link into libdwarves 2019-02-19 10:21:29 -03:00
codiff.c codiff: Fix comparision of multi-cu against single-cu files 2019-04-11 16:38:51 -03:00
config.h.cmake [DWARVES] Fixes a FIXME relating to a missing elf (libdw) symbol check. 2008-02-12 21:08:49 -02:00
COPYING
ctf_encoder.c libctf: The type_ids returned are uint32_t fixup where it was uint16_t 2019-03-11 11:44:53 -03:00
ctf_encoder.h Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
ctf_loader.c loaders: Record CU's endianness in dwarf/btf/ctf loaders 2019-03-29 15:55:37 -03:00
ctf.h Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
ctfdwdiff ctfdwdiff: Don't ask for variables and inline expansions in pfunct 2009-03-31 19:21:46 -03:00
ctracer.c tag: Introduce tag__is_pointer_to() 2019-04-05 15:28:55 -03:00
dtagnames.c Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
dutil.c Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
dutil.h Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
dwarf_loader.c core: Allow the loaders to advertise features they have 2019-04-15 14:45:27 -03:00
dwarves_emit.c core: Use unnatural alignment of struct embedded in another to infer __packed__ 2019-04-15 15:51:16 -03:00
dwarves_emit.h Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
dwarves_fprintf.c fprintf: Deal with zero sized arrays in the midle of a union 2019-04-15 17:09:03 -03:00
dwarves_reorganize.c reorganize: Introduce class__for_each_member_from_safe() 2019-04-05 16:16:16 -03:00
dwarves_reorganize.h Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
dwarves.c core: Use unnatural alignment of struct embedded in another to infer __packed__ 2019-04-15 15:51:16 -03:00
dwarves.h fprintf: Deal with zero sized arrays in the midle of a union 2019-04-15 17:09:03 -03:00
elf_symtab.c Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
elf_symtab.h Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
elfcreator.c Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
elfcreator.h Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
gobuffer.c Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
gobuffer.h Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
hash.h [DWARVES]: Use a hash table for the tags in a CU 2008-02-11 11:47:17 -02:00
libbtf.c btf_encoder: run BTF deduplication before writing out to ELF 2019-02-18 11:00:03 -03:00
libbtf.h btf_elf: Rename btf_elf__free() to btf_elf__delete() 2019-02-14 17:06:40 -03:00
libctf.c libctf: The type_ids returned are uint32_t fixup where it was uint16_t 2019-03-11 11:44:53 -03:00
libctf.h libctf: The type_ids returned are uint32_t fixup where it was uint16_t 2019-03-11 11:44:53 -03:00
list.h Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
MANIFEST MANIFEST: Add missing COPYING file 2018-09-11 11:22:41 -03:00
NEWS v1.12 - New Release 2018-08-16 16:15:27 -03:00
pahole.c fprintf: Allow suppressing the inferred __attribute__((__packed__)) 2019-04-15 15:01:53 -03:00
pdwtags.c core: Allow the loaders to advertise features they have 2019-04-15 14:45:27 -03:00
pfunct.c core: Allow the loaders to advertise features they have 2019-04-15 14:45:27 -03:00
pglobal.c Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
prefcnt.c Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
rbtree.c Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
rbtree.h Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
README
README.btf README.btf: Add section on validating the .BTF section via the kernel 2018-08-16 12:05:29 -03:00
README.ctracer ctracer: update README.ctracer, f9 has the dwarves 2008-10-29 08:54:53 -02:00
README.DEBUG README.DEBUG: Add an extra step to make the instructions cut'n'exec 2017-12-14 14:15:54 -03:00
regtest regtest: Accept --diff instad of plain 'diff' as long option 2012-05-14 19:36:58 -03:00
scncopy.c Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
strings.c Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
strings.h Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
syscse.c dwarves: Introduce type_id_t for use with the type IDs 2019-03-11 11:44:53 -03:00

README 

Build instructions:

1. install cmake
2. mkdir build
3. cd build
4. cmake -D__LIB=lib ..
5. make install

Default is to be installed on /usr/local, see rpm spec file for
installing on other places.

Known to work scenarios:

Mandriva Cooker:

cmake 2.4.5-1mdv2007.1
libelfutils1-devel 0.123-1mdv2007.1

Debian Unstable:

cmake 2.4.5-1
libdw-dev 0.123-2

Fedora Core 6:

cmake 2.4.5-2.fc6
elfutils-devel 0.126-1.fc6