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Arnaldo Carvalho de Melo ac32e5e908 codiff: Fix comparision of multi-cu against single-cu files 
When the first arg, the old object file has multiple compile units, i.e.
multiple objects that were then linked into one, and the second just one
.o, or equivalent, i.e. a .BTF file, then codiff shouldn't try to
find the types in the single CU in each of the old CUs.

Think about a .BTF file generated from a multi-CU DWARF binary, it will
contain all the types in all of the DWARF CUs, so if we go on trying to
find all the BTF files in each of the CUs, we'll fail.

It only makes sense to go on the DWARF CUs looking for the type on the
.BTF section and then compare them.

Fixes: 6b1e43f2c1 ("codiff: When comparing against a file with just one CU don't bother finding by name")
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 		2019-04-11 16:38:51 -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 dwarves_fprintf: Allow suppressing the __attribute__((__aligned__(N)) 2019-04-03 18:10:16 -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
CMakeLists.txt libbpf: Build as PIC and statically link into libdwarves 2019-02-19 10:21:29 -03:00
COPYING [LICENSE]: Add COPYING file and add missing license info on some files 2007-12-17 14:15:42 -02:00
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
README [CMAKE]: Make the default install prefix be /usr/local 2007-04-19 18:01:47 -03:00
README.DEBUG README.DEBUG: Add an extra step to make the instructions cut'n'exec 2017-12-14 14:15:54 -03:00
README.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
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 btfdiff: Use --suppress_aligned_attribute with -F dwarf 2019-04-03 18:10:16 -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
ctf.h Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
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
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 dwarf_loader: Store DW_AT_alignment if available in DW_TAG_{structure,union,class}_type 2019-04-09 16:57:52 -03:00
dwarves.c core: Take arrays into account when inferring if a struct is packed 2019-04-11 13:25:45 -03:00
dwarves.h core: Infer if a struct is packed by the offsets/natural alignments 2019-04-10 17:41:59 -03:00
dwarves_emit.c emit: Cover void ** as a function parameter 2019-04-11 11:19:32 -03:00
dwarves_emit.h Adopt SPDX-License-Identifier 2019-01-18 15:41:48 -03:00
dwarves_fprintf.c fprintf: Do not add explicit padding when struct has __aligned__ attr 2019-04-11 13:23:40 -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
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
pahole.c tag: Introduce tag__is_pointer_to() 2019-04-05 15:28:55 -03:00
pdwtags.c tag: Introduce tag__is_pointer() 2019-04-05 15:21:55 -03:00
pfunct.c pfunct: Generate a valid return type for the --compile bodies 2019-04-05 16:33:43 -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
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