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Andrii Nakryiko 8cac1c54c8 btf_encoder: Ignore zero-sized ELF symbols 
It's legal for ELF symbol to have size 0, if it's size is unknown or
unspecified. Instead of erroring out, just ignore such symbols, as they can't
be a valid per-CPU variable anyways.

Reported-by: Érico Rolim <erico.erc@gmail.com>
Reported-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Tested-by: Jiri Slaby <jirislaby@kernel.org>
Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=1177921
Cc: bpf@vger.kernel.org
Cc: dwarves@vger.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-10-23 13:37:21 -03:00
cmake/modules cmake: libebl was merged into libdw 2020-02-03 08:42:13 +01:00
lib libbpf: Update to latest libbpf version 2020-10-08 14:36:51 -03:00
man-pages pahole: Implement --packed 2020-10-08 10:11:31 -03:00
ostra ostra: Initial python3 conversion 2019-04-23 12:02:22 -03:00
rpm/SPECS dwarves: Prep v1.18 2020-10-02 17:29:59 -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 btf_encoder: Ignore zero-sized ELF symbols 2020-10-23 13:37:21 -03:00
btf_encoder.h btf_encoder: Allow disabling BTF var encoding. 2020-09-21 17:00:16 -03:00
btf_loader.c btf_loader: Use libbpf to load BTF 2020-10-09 12:43:42 -03:00
btfdiff v1.13: New release 2019-04-16 16:13:19 -03:00
changes-v1.13 v1.13: New release 2019-04-16 16:13:19 -03:00
changes-v1.16 dwarves: Prep v1.16 2019-12-16 11:43:53 -03:00
changes-v1.17 dwarves: Prep v1.17 2020-03-13 16:36:02 -03:00
changes-v1.18 dwarves: Prep v1.18 2020-10-02 17:29:59 -03:00
CMakeLists.txt strings: Rename strings.h to avoid clashing with /usr/include/strings.h 2020-10-20 17:11:34 -03:00
codiff.c codiff: Remove unused filenames variable 2019-07-01 16:41:02 -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 [LICENSE]: Add COPYING file and add missing license info on some files 2007-12-17 14:15:42 -02:00
ctf_encoder.c strings: use BTF's string APIs for strings management 2020-10-20 17:17:51 -03:00
ctf_encoder.h Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
ctf_loader.c dwarves: Move the common initialization of fields for 'struct type' 2020-08-05 15:16:19 -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 dwarves: Adopt tag__is_base_type() from ctrace.c 2020-06-24 14:14:33 -03:00
dtagnames.c Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
dutil.c dutils: Allow for having a priv area per strlist 2020-08-05 15:16:19 -03:00
dutil.h dutils: Allow for having a priv area per strlist 2020-08-05 15:16:19 -03:00
dwarf_loader.c strings: use BTF's string APIs for strings management 2020-10-20 17:17:51 -03:00
dwarves_emit.c emit: Remove unused 'is_pointer' variable 2019-07-02 10:27:16 -03:00
dwarves_emit.h Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
dwarves_fprintf.c fprintf: Support DW_TAG_string_type 2020-09-18 18:19:22 -03:00
dwarves_reorganize.c reorganize: Enclose bitfield routines under ifdef 2019-07-02 12:28:50 -03:00
dwarves_reorganize.h Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
dwarves.c strings: Rename strings.h to avoid clashing with /usr/include/strings.h 2020-10-20 17:11:34 -03:00
dwarves.h strings: Rename strings.h to avoid clashing with /usr/include/strings.h 2020-10-20 17:11:34 -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 elfcreator: Address initialization warning emitted by 'gcc -O6' 2019-12-16 11:19:47 -03:00
elfcreator.h Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
fullcircle v1.13: New release 2019-04-16 16:13:19 -03:00
gobuffer.c gobuffer: Do not crash on object without any public symbols 2020-01-17 13:54:15 -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: Support cross-compiled ELF binaries with different endianness 2020-10-21 08:07:43 -03:00
libbtf.h btf_encoder: revamp how per-CPU variables are encoded 2020-10-09 12:57:35 -03:00
libctf.c strings: use BTF's string APIs for strings management 2020-10-20 17:17:51 -03:00
libctf.h strings: use BTF's string APIs for strings management 2020-10-20 17:17:51 -03:00
list.h Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
MANIFEST strings: Rename strings.h to avoid clashing with /usr/include/strings.h 2020-10-20 17:11:34 -03:00
NEWS dwarves: Prep v1.18 2020-10-02 17:29:59 -03:00
pahole_strings.h strings: use BTF's string APIs for strings management 2020-10-20 17:17:51 -03:00
pahole.c btf_encoder: Discard CUs after BTF encoding 2020-10-09 12:49:42 -03:00
pdwtags.c core: Allow the loaders to advertise features they have 2019-04-15 14:45:27 -03:00
pfunct.c btf_loader: Add support for BTF_KIND_FUNC 2019-11-05 12:04:23 -03:00
pglobal.c pglobal: Allow passing the format path specifier, to use with BTF 2019-10-24 08:17:16 -03:00
prefcnt.c prefcnt: Avoid ambiguous else with for_each macro 2019-07-02 12:31:57 -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 [CMAKE]: Make the default install prefix be /usr/local 2007-04-19 18:01:47 -03:00
README.btf v1.13: New release 2019-04-16 16:13:19 -03:00
README.cross README: Add instructions to do a cross build 2020-08-17 09:52:02 -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
README.tarball docs: Add command line to generate tarball with a prefix 2020-03-12 16:55:15 -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 strings: use BTF's string APIs for strings management 2020-10-20 17:17:51 -03:00
syscse.c dwarves: Make function__for_each_parameter receive 'cu' arg 2020-01-09 14:16:52 -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