Commit Graph

14 Commits

Author SHA1 Message Date
Georgii Rymar 1af3cb5424 [llvm-readobj/libObject] - Allow dumping objects that has a broken SHT_SYMTAB_SHNDX section.
Currently it is impossible to create an instance of ELFObjectFile when the
SHT_SYMTAB_SHNDX can't be read. We error out when fail to parse the
SHT_SYMTAB_SHNDX section in the factory method.

This change delays reading of the SHT_SYMTAB_SHNDX section entries,
with it llvm-readobj is now able to work with such inputs.

Differential revision: https://reviews.llvm.org/D89379
2020-11-03 11:30:28 +03:00
diggerlin 2f0d755d81 [AIX][XCOFF][Patch1] Provide decoding trace back table information API for xcoff object file for llvm-objdump -d
SUMMARY:

1. This patch provided API for decoding the traceback table info and unit test for the these API.

2. Another patchs will do the following things:
2.1 added a new option --traceback-table to decode the trace back table information for xcoff object file when
using llvm-objdump to disassemble the xcoff objfile.

2.2 print out the  traceback table information for llvm-objdump.

Reviewers:  Jason liu, Hubert Tong, James Henderson

Differential Revision: https://reviews.llvm.org/D81585
2020-08-17 16:23:47 -04:00
Dineshkumar Bhaskaran b7084d8ede [ELF] Fixing an issue in Elf_Note_Impl::getDescAsStringRef
Summary:
Fix in getDescAsStringRef to not use a reference to a
temporary type and added a testcase.

Reviewers: arsenm, saiislam, scott.linder

Reviewed By: scott.linder

Subscribers: wdng, mgorny, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D81653
2020-06-16 10:08:31 +00:00
Kazushi (Jam) Marukawa 5921782f74 [VE] Implements minimum MC layer for VE (3/4)
Summary:
Define ELF binary code for VE and modify code where should use this new code.

Depends on D79544.

Reviewed By: jhenderson

Differential Revision: https://reviews.llvm.org/D79545
2020-05-28 10:07:48 +02:00
James Henderson 326bc1da45 [Object] Fix handling of large archive members
The archive library truncated the size of archive members whose size was
greater than max uint32_t. This patch fixes the issue and adds some unit
tests to verify.

Reviewed by: ruiu, MaskRay, grimar, rupprecht

Differential Revision: https://reviews.llvm.org/D75742
2020-03-11 10:29:45 +00:00
Pavel Labath c0fc29c468 Add operator<< for object::SectionedAddress
The main motivation for this is better failure messages in unit tests.

Split off from D70394.
2019-11-19 10:34:30 +01:00
Pavel Labath 045b8544fd Fix two more issues with r356652
The first problem was a use-after-free in the tests (detected by asan
bots). The temporary array created for the "create" call is guaranteed
to live only until the end of the statement. The fix there is to store
the test data in a local variable to ensure it has the right lifetime

The second issue is broken BUILD_SHARED_LIBS build, which I fix by
adding the appropriate BinaryFormat dependency to the Object unit tests.

llvm-svn: 356655
2019-03-21 10:21:55 +00:00
Pavel Labath 581d79a440 [Object] Add basic minidump support
Summary:
This patch adds basic support for reading minidump files. It contains
the definitions of various important minidump data structures (header,
stream directory), and of one minidump stream (SystemInfo). The ability
to read other streams will be added in follow-up patches. However, all
streams can be read even now as raw data, which means lldb's minidump
support (where this code is taken from) can be immediately rebased on
top of this patch as soon as it lands.

As we don't have any support for generating minidump files (yet), this
tests the code via unit tests with some small handcrafted binaries in
the form of c char arrays.

Reviewers: Bigcheese, jhenderson, zturner

Subscribers: srhines, dschuff, mgorny, fedor.sergeev, lemo, clayborg, JDevlieghere, aprantl, lldb-commits, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59291

llvm-svn: 356652
2019-03-21 09:18:59 +00:00
David Bozier 4ab9a06f6a Fix incorrect formatting of DataRefImpl members in operator<< function
Changed format specifiers to use format macro constant for pointer type. 
Moved width part of format specifier in the correct place for formatting members a and b.

Added a unit test to confirm the output.

Differential Revision: https://reviews.llvm.org/D28957

llvm-svn: 295173
2017-02-15 12:58:41 +00:00
Kuba Brecka a3ccf3ddbd Fix llvm-symbolizer to correctly sort a symbol array and calculate symbol sizes
Sometimes, llvm-symbolizer gives wrong results due to incorrect sizes of some symbols. The reason for that was an incorrectly sorted array in computeSymbolSizes. The comparison function used subtraction of unsigned types, which is incorrect. Let's change this to return explicit -1 or 1.

Differential Revision: https://reviews.llvm.org/D26537

llvm-svn: 287028
2016-11-15 21:07:03 +00:00
Rafael Espindola 97de474a36 Invert the MC -> Object dependency.
Now that we have a lib/MC/MCAnalysis, the dependency was there just because
of two helper classes. Move the two over to MC.

This will allow IRObjectFile to parse inline assembly.

llvm-svn: 212248
2014-07-03 02:01:39 +00:00
Hans Wennborg 83e6e1e926 ELFObjectWriter: deduplicate suffices in strtab
We already do this for shstrtab, so might as well do it for strtab. This
extracts the string table building code into a separate class. The idea
is to use it for other object formats too.

I mostly wanted to do this for the general principle, but it does save a
little bit on object file size. I tried this on a clang bootstrap and
saved 0.54% on the sum of object file sizes (1.14 MB out of 212 MB for
a release build).

Differential Revision: http://reviews.llvm.org/D3533

llvm-svn: 207670
2014-04-30 16:25:02 +00:00
NAKAMURA Takumi b5c4b87690 [CMake] Update LLVM_LINK_COMPONENTS for each CMakeLists.txt.
llvm-svn: 196908
2013-12-10 11:13:32 +00:00
Sean Silva 2f672d610e Make BinaryRef output correctly in case of empty data.
Previously, it would simply output nothing, but it should output an
empty string `""`.

llvm-svn: 185894
2013-07-09 00:54:46 +00:00