Commit Graph

213 Commits

Author SHA1 Message Date
Rafael Espindola e01f43bcc1 Add dynamic_table iterators back to ELF.h.
In tree they are only used by llvm-readobj, but it is also used by
https://github.com/mono/CppSharp.

While at it, add some missing error checking.

llvm-svn: 244320
2015-08-07 15:25:20 +00:00
Reid Kleckner 47ea9ece1a [COFF] Return symbol VAs instead of RVAs for PE files
This makes llvm-nm consistent with binutils nm on executables and DLLs.
For a vanilla hello world executable, the address of main should include
the default image base of 0x400000.

llvm-svn: 243755
2015-07-31 16:14:22 +00:00
Rafael Espindola b82657d3f1 Support printing relocations in files with no section table.
llvm-svn: 242998
2015-07-23 09:11:05 +00:00
Rafael Espindola 6565ea7299 Refactor duplicated code and check for invalid symbol table size.
llvm-svn: 242981
2015-07-23 03:24:22 +00:00
Michael J. Spencer 402a4f1088 [Object][ELF] Handle files with no section header string table.
llvm-svn: 242839
2015-07-21 21:40:33 +00:00
Rafael Espindola b68a16c47c Simplify iterating over the dynamic section and report broken ones.
llvm-svn: 242712
2015-07-20 21:23:29 +00:00
Rafael Espindola 33f250931c Remove Elf_Rela_Iter and Elf_Rel_Iter.
Use just the pointers and check for invalid relocation sections.

llvm-svn: 242700
2015-07-20 20:07:50 +00:00
Rafael Espindola 836f2e86e5 Report errors an invalid virtual addresses.
llvm-svn: 242676
2015-07-20 14:45:03 +00:00
Rafael Espindola 073624bb56 Simplify iterating over program headers and detect corrupt ones.
We now use a simple pointer and have range loops.

llvm-svn: 242669
2015-07-20 13:35:33 +00:00
Rafael Espindola 00ddb1416d llvm-readobj: Handle invalid references to the string table.
llvm-svn: 242658
2015-07-20 03:38:17 +00:00
Rafael Espindola 8c1a9102e6 Add missing file.
Sorry about that.

llvm-svn: 242083
2015-07-13 23:14:26 +00:00
Michael J. Spencer 20546ffd4a [Object][ELF] Support dumping hash-tables from files with no section table.
This time without breaking the bots.

llvm-svn: 241869
2015-07-09 22:32:24 +00:00
Rafael Espindola 5f657eb5fe Add missing file from previous commit.
llvm-svn: 241815
2015-07-09 15:58:22 +00:00
Adrian Prantl bfdf7dd176 Temporarily reverting 241765, 241768, and 241772 to unbreak the build bots.
llvm-svn: 241781
2015-07-09 02:14:49 +00:00
Michael J. Spencer c4a25be568 [Object][ELF] Support dumping hash-tables from files with no section table.
llvm-svn: 241765
2015-07-09 00:21:06 +00:00
Rafael Espindola 4104fe8ae9 Don't reject an archive with just a symbol table.
It is pretty unambiguous how to interpret it and gnu ar accepts it too.

llvm-svn: 241750
2015-07-08 22:27:54 +00:00
Rafael Espindola 76d650e8d7 Check that COFF .obj files have sections with zero virtual address spaces.
When talking about the virtual address of sections the coff spec says:
  ... for simplicity, compilers should set this to zero. Otherwise, it is an
  arbitrary value that is subtracted from offsets during relocation.

We don't currently subtract it, so check that it is zero.

If some producer does create such files, we can change getRelocationOffset
instead.

llvm-svn: 241447
2015-07-06 14:26:07 +00:00
Rafael Espindola 5504eb79b4 Fix handling of ELF::R_MIPS_32 on Mips64.
Thanks to Aboud, Amjad for reporting the regression and providing the testcase.

llvm-svn: 241440
2015-07-06 12:18:44 +00:00
Rafael Espindola 7605cdef90 Remove Elf_Shdr_Iter. Diagnose files with invalid section header sizes.
llvm-svn: 241109
2015-06-30 19:58:10 +00:00
Rafael Espindola 0fe34f7359 Add a test of an elf file with an invalid section index.
We were already checking, but were missing a test.

llvm-svn: 241094
2015-06-30 18:23:07 +00:00
Rafael Espindola 350239c424 Report an error on invalid sh_entsize.
llvm-svn: 241070
2015-06-30 14:59:20 +00:00
Rafael Espindola 6a1bfb2f9b Factor out the checking of string tables.
This moves the error checking for string tables to getStringTable which returns
an ErrorOr<StringRef>.

This improves error checking, makes it uniform across all string tables and
makes it possible to check them once instead of once per name.

llvm-svn: 240950
2015-06-29 14:39:25 +00:00
Rafael Espindola f87b05e43b Add a testcase for an invalid file.
We were already checking this, but had no tests.

llvm-svn: 240945
2015-06-29 14:12:14 +00:00
Rafael Espindola f934a6a104 Convert an assert that can fail into error checking.
llvm-svn: 240944
2015-06-29 14:02:24 +00:00
Lang Hames 02f32d93ee [Stackmap] Pre-assemble the stackmap parser test case. (Fix builders).
This case had been failing on testers that didn't have x86 support. Rather
than XFAIL it on testers without x86 support, I've just assembled it and used
the raw object as the test input.

llvm-svn: 240875
2015-06-27 03:49:25 +00:00
Lang Hames 0000afd88c [StackMaps] Add a lightweight parser for stackmap version 1 sections.
The parser provides a convenient interface for reading llvm stackmap v1 sections
in object files.

This patch also includes a new option for llvm-readobj, '-stackmap', which uses
the parser to pretty-print stackmap sections for debugging/testing purposes.

llvm-svn: 240860
2015-06-26 23:56:53 +00:00
Rafael Espindola 3dc0d05bf4 Improve error handling of getRelocationAddend.
This patch changes getRelocationAddend to use ErrorOr and considers it an error
to try to get the addend of a REL section.

If, for example, a x86_64 file has a REL section, that file is corrupted and
we should reject it.

Using ErrorOr is not ideal since we check the section type once per relocation
instead of once per section.

Checking once per section would involve getRelocationAddend just asserting and
callers checking the section before iterating over the relocations.

In any case, this is an improvement and includes a test.

llvm-svn: 240176
2015-06-19 20:58:43 +00:00
Alexey Samsonov f8a7bf8c6e [Object, MachO] Don't crash on incomplete MachO segment load commands.
Report proper error code from MachOObjectFile constructor if we
can't parse another segment load command (we already return a proper
error if segment load command contents is suspicious).

llvm-svn: 239109
2015-06-04 22:26:44 +00:00
Alexey Samsonov 9f336636fe [Object, MachO] Don't crash on parsing invalid MachO header.
Summary: Instead, properly report this error from MachOObjectFile constructor.

Test Plan: regression test suite

Reviewers: rafael

Subscribers: llvm-commits
llvm-svn: 239078
2015-06-04 19:45:22 +00:00
Rafael Espindola 7884c95c7e Disassemble the start of sections even if there is no symbol there.
We already handled a section with no symbols, extend that to also handle a
section with symbols that don't include the section start.

llvm-svn: 239039
2015-06-04 15:01:05 +00:00
Rafael Espindola 62a07cb59b Stop inventing symbol sizes.
MachO and COFF quite reasonably only define the size for common symbols.

We used to try to figure out the "size" by computing the gap from one symbol to
the next.

This would not be correct in general, since a part of a section can belong to no
visible symbol (padding, private globals).

It was also really expensive, since we would walk every symbol to find the size
of one.

If a caller really wants this, it can sort all the symbols once and get all the
gaps ("size") in O(n log n) instead of O(n^2).

On MachO this also has the advantage of centralizing all the checks for an
invalid n_sect.

llvm-svn: 238028
2015-05-22 15:43:00 +00:00
Rafael Espindola 0d85d10747 Detect invalid section indexes when we first read them.
We still detect the same errors, but now we do it earlier.

llvm-svn: 238024
2015-05-22 14:59:27 +00:00
Simon Atanasyan eeb2fa9877 [llvm-readobj] Teach llvm-readobj to print PT_MIPS_ABIFLAGS program header
llvm-svn: 237451
2015-05-15 15:59:22 +00:00
David Blaikie f72d05bc7b [opaque pointer type] Add textual IR support for explicit type parameter to gep operator
Similar to gep (r230786) and load (r230794) changes.

Similar migration script can be used to update test cases, which
successfully migrated all of LLVM and Polly, but about 4 test cases
needed manually changes in Clang.

(this script will read the contents of stdin and massage it into stdout
- wrap it in the 'apply.sh' script shown in previous commits + xargs to
apply it over a large set of test cases)

import fileinput
import sys
import re

rep = re.compile(r"(getelementptr(?:\s+inbounds)?\s*\()((<\d*\s+x\s+)?([^@]*?)(|\s*addrspace\(\d+\))\s*\*(?(3)>)\s*)(?=$|%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|zeroinitializer|<|\[\[[a-zA-Z]|\{\{)", re.MULTILINE | re.DOTALL)

def conv(match):
  line = match.group(1)
  line += match.group(4)
  line += ", "
  line += match.group(2)
  return line

line = sys.stdin.read()
off = 0
for match in re.finditer(rep, line):
  sys.stdout.write(line[off:match.start()])
  sys.stdout.write(conv(match))
  off = match.end()
sys.stdout.write(line[off:])

llvm-svn: 232184
2015-03-13 18:20:45 +00:00
Justin Bogner ac631cb03d Object: Test for reading kext bundles
In the review for r230567, it was pointed out we should really test
the lib/Object part of that change. This does so using llvm-readobj.

llvm-svn: 230779
2015-02-27 18:58:23 +00:00
Shankar Easwaran 6fbbe20176 [obj2yaml/yaml2obj] Add SHT_GROUP support.
This adds section group support to the tools obj2yaml and yaml2obj.

llvm-svn: 230124
2015-02-21 04:28:26 +00:00
Simon Atanasyan 1d902b7cc7 [Object] Support reading 64-bit MIPS ELF archives
The 64-bit MIPS ELF archive file format is used by MIPS64 targets.
The main difference from a regular archive file is the symbol table format:
1. ar_name is equal to "/SYM64/"
2. number of symbols and offsets are 64-bit integers

http://techpubs.sgi.com/library/manuals/4000/007-4658-001/pdf/007-4658-001.pdf
Page 96

The patch allows reading of such archive files by llvm-nm, llvm-objdump
and other tools. But it does not support archive files with number of symbols
and/or offsets exceed 2^32. I think it is a rather rare case requires more
significant modification of `Archive` class code.

http://reviews.llvm.org/D7546

llvm-svn: 229520
2015-02-17 18:54:22 +00:00
Filipe Cabecinhas 4013950034 Report fatal errors instead of segfaulting/asserting on a few invalid accesses while reading MachO files.
Summary:
Shift an older “invalid file” test to get a consistent naming for these tests.

Bugs found by afl-fuzz

Reviewers: rafael

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D6945

llvm-svn: 226219
2015-01-15 22:52:38 +00:00
Filipe Cabecinhas e71bd0c89b Don't loop endlessly for MachO files with 0 ncmds
llvm-svn: 225271
2015-01-06 17:08:26 +00:00
Juergen Ributzka 4d7f70d47e [Object] Don't crash on empty export lists.
Summary: This fixes the exports iterator if the export list is empty.

Reviewers: Bigcheese, kledzik

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D6732

llvm-svn: 224563
2014-12-19 02:31:01 +00:00
Rafael Espindola 9d1020648c Start adding thin archive support.
This is just sufficient for 'ar t' to work.

llvm-svn: 224307
2014-12-16 01:43:41 +00:00
Jean-Daniel Dupas 003fc7f4bb Add missing test file
llvm-svn: 223346
2014-12-04 09:20:13 +00:00
Simon Atanasyan 84f4651f9a [Object][Mips] Return address of MIPS symbol with cleared microMIPS indicator bit
llvm-svn: 222726
2014-11-25 05:57:55 +00:00
Nick Kledzik f44dbda542 Object, support both mach-o archive t.o.c file names
For historical reasons archives on mach-o have two possible names for the 
file containing the table of contents for the archive: "__.SYMDEF SORTED" 
and "__.SYMDEF".  But the libObject archive reader only supported the former.

This patch fixes llvm::object::Archive to support both names.

llvm-svn: 221747
2014-11-12 01:37:45 +00:00
Rafael Espindola 42bce8f69d Add CRLF support to LineIterator.
The MRI scripts have to work with CRLF, and in general it is probably
a good idea to support this in a core utility like LineIterator.

llvm-svn: 221153
2014-11-03 14:09:47 +00:00
David Majnemer b30753d731 Add tests for r219479.
llvm-svn: 219480
2014-10-10 06:59:05 +00:00
David Majnemer efbe94890c obj2yaml, COFF: Handle long section names
Long section names are represented as a slash followed by a numeric
ASCII string.  This number is an offset into a string table.

Print the appropriate entry in the string table instead of the less
enlightening /4.

N.B.  yaml2obj already does the right thing, this test exercises both
sides of the (de-)serialization.

llvm-svn: 219458
2014-10-10 00:17:57 +00:00
Rafael Espindola e45c740370 Fix an off-by-one bug in the target independent llvm-objdump.
It would prevent the display of a single byte instruction before a label.

Patch by Steve King!

llvm-svn: 215837
2014-08-17 16:31:39 +00:00
Kevin Enderby 407cc21c32 Add printing of Mach-O stabs in llvm-nm.
llvm-svn: 213327
2014-07-17 22:47:16 +00:00
Simon Atanasyan 1cd169f137 [Mips] Support SHT_MIPS_ABIFLAGS section type flag in the llvm-readobj,
obj2yaml and yaml2obj tools.

llvm-svn: 212908
2014-07-13 15:28:54 +00:00
Simon Atanasyan 8ebb6aed9b [ELFYAML] Group ELF section type flags to target specific blocks.
Recognize only flags which correspond to the current target.

llvm-svn: 212880
2014-07-12 18:25:08 +00:00
Rafael Espindola 2dc0d9bddb Ignore llvm.* globals.
It is not clear if llvm.global_ctors should or should not be in llvm.metadata,
but in practice it is not and we need to ignore it for LTO.

llvm-svn: 212351
2014-07-04 19:08:22 +00:00
Rafael Espindola b674c17deb Don't include llvm.metadata variables in archive symbol tables.
llvm-svn: 212344
2014-07-04 15:03:17 +00:00
Ed Maste 557c54d6ca objdump: Add test for ELF file with no section table
This is a test for the fix in r211904.

Differential Revision: http://reviews.llvm.org/D4349

llvm-svn: 212059
2014-06-30 20:03:02 +00:00
Simon Atanasyan 24199883e5 [ELF][Mips] Fix recognition of MIPS 64-bit arch in the ELFObjectFile:getArch() method.
llvm-svn: 211891
2014-06-27 11:36:45 +00:00
Kevin Enderby 246a460d1f Add "-format darwin" to llvm-size to be like darwin's size(1) -m output, and
and the -l option for the long format.  Also when the object is a Mach-O
file and the format is berkeley produce output like darwin’s default size(1)
summary berkeley derived output.

Like System V format, there are also some small changes in how and where
the file names and archive member names are printed for darwin and
Mach-O.

Like the changes to llvm-nm these are the first steps in seeing if it is
possible to make llvm-size produce the same output as darwin's size(1).

llvm-svn: 211117
2014-06-17 17:54:13 +00:00
Rafael Espindola 95cf2f25fe Fix pr17056.
This makes llvm-nm ignore members that are not sufficiently aligned for
lib/Object to handle.

These archives are invalid. GNU AR is able to handle this, but in general
just warns about broken archive members.

We should probably start warning too, but for now just make sure llvm-nm
exits with an 0.

llvm-svn: 211036
2014-06-16 16:41:00 +00:00
Kevin Enderby 980b25840f Add "-format darwin" to llvm-nm to be like darwin's nm(1) -m output.
This is a first step in seeing if it is possible to make llvm-nm produce
the same output as darwin's nm(1).  Darwin's default format is bsd but its
-m output prints the longer Mach-O specific details.  For now I added the
"-format darwin" to do this (whos name may need to change in the future).
As there are other Mach-O specific flags to nm(1) which I'm hoping to add some
how in the future.  But I wanted to see if I could get the correct output for
-m flag using llvm-nm and the libObject interfaces.

I got this working but would love to hear what others think about this approach
to getting object/format specific details printed with llvm-nm.

llvm-svn: 210285
2014-06-05 21:21:57 +00:00
Kevin Enderby 403258f5a3 Implement MachOObjectFile::isSectionData() and MachOObjectFile::isSectionBSS
so that llvm-size will total up all the sections in the Berkeley format.  This
allows for rough categorizations for Mach-O sections.  And allows the total of
llvm-size’s Berkeley and System V formats to be the same.

llvm-svn: 209158
2014-05-19 20:36:02 +00:00
Kevin Enderby e858a65323 Teach llvm-nm to know about fat archives (aka MachOUniversal files
containing archives).  First step as other tools will be updated next.

llvm-svn: 208812
2014-05-14 21:18:50 +00:00
David Majnemer 3bb6073919 obj2yaml: Don't crash if the characteristics field is zero
obj2yaml would fail when seeing a Weak External auxiliary record with a
characteristics field holding zero instead of one of
IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY, IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY,
or IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY.

llvm-svn: 205911
2014-04-09 16:38:15 +00:00
David Majnemer a1c861d379 obj2yaml: Use the correct relocation type for different machine types
The IO normalizer would essentially lump I386 and AMD64 relocations
together.  Relocation types with the same numeric value would then get
mapped in appropriately.

For example:
IMAGE_REL_AMD64_ADDR64 and IMAGE_REL_I386_DIR16 both have a numeric
value of one.  We would see IMAGE_REL_I386_DIR16 in obj2yaml conversions
of object files with a machine type of IMAGE_FILE_MACHINE_AMD64.

llvm-svn: 205746
2014-04-07 23:12:20 +00:00
Rafael Espindola 7e91bc9e32 Implement getRelocationAddress for MachO and ET_REL elf files.
With that, fix the symbolizer to work with any ELF file.

llvm-svn: 205588
2014-04-03 23:54:35 +00:00
Rafael Espindola 5091f93cdd Only clear the thumb bit from function addresses.
llvm-svn: 205500
2014-04-03 02:20:43 +00:00
Rafael Espindola b4865d698b Revert "Fix a nomenclature error in llvm-nm."
This reverts commit r205479.

It turns out that nm does use addresses, it is just that every reasonable
relocatable ELF object has sections with address 0. I have no idea if those
exist in reality, but it at least it shows that llvm-nm should use the name
address.

The added test was includes an unusual .o file with non 0 section addresses. I
created it by hacking ELFObjectWriter.cpp.

Really sorry for the churn.

llvm-svn: 205493
2014-04-03 00:19:35 +00:00
David Majnemer 798e548955 Object: Output .file symbols properly
obj2yaml would emit the NUL bytes padding the auxiliary file symbol
records.  Trimming them looks nicer.

llvm-svn: 204314
2014-03-20 06:29:02 +00:00
David Majnemer ddf28f2b79 Object: Provide a richer means of describing auxiliary symbols
The current state of affairs has auxiliary symbols described as a big
bag of bytes. This is less than satisfying, it detracts from the YAML
file as being human readable.

Instead, allow for symbols to optionally contain their auxiliary data.
This allows us to have a much higher level way of describing things like
weak symbols, function definitions and section definitions.

This depends on D3105.

Differential Revision: http://llvm-reviews.chandlerc.com/D3092

llvm-svn: 204214
2014-03-19 04:47:47 +00:00
Rafael Espindola 02eac9a270 Add a test for printing absolute symbols in ELF.
llvm-svn: 200818
2014-02-05 04:36:47 +00:00
Rafael Espindola f42c58d2ef Small fix for llvm-nm handling of weak symbols on ELF (print 'v').
llvm-svn: 200808
2014-02-04 23:53:15 +00:00
Rafael Espindola fb66ef05f7 Add a test for common symbols in coff.
llvm-svn: 200803
2014-02-04 23:18:52 +00:00
Simon Atanasyan 793f1b2202 [Object][ELF][Mips] Print symbol name for MIPS ELF relocations.
llvm-svn: 199898
2014-01-23 15:05:45 +00:00
Rafael Espindola a135632af0 Fix llvm-nm to mach OS X's nm on some tests.
There is still a long way to go for llvm-nm, but at least we now match
nm's letter output in the cases we test for.

llvm-svn: 193912
2013-11-02 05:03:24 +00:00
Simon Atanasyan 39ff5f6702 [Mips] Teach llvm-readobj to print MIPS-specific ELF program headers.
The patch reviewed by Michael Spencer.
http://llvm-reviews.chandlerc.com/D1846

llvm-svn: 192093
2013-10-07 08:58:27 +00:00
Ahmed Bougacha ffeecb5c80 MC: ObjectSymbolizer can now recognize external function stubs.
Only implemented in the Mach-O ObjectSymbolizer.
The testcase sadly introduces a new binary.

llvm-svn: 188879
2013-08-21 07:28:13 +00:00
Michael J. Spencer 126973ba93 [Object] Split the ELF interface into 3 parts.
* ELFTypes.h contains template magic for defining types based on endianess, size, and alignment.
* ELFFile.h defines the ELFFile class which provides low level ELF specific access.
* ELFObjectFile.h contains ELFObjectFile which uses ELFFile to implement the ObjectFile interface.

llvm-svn: 188022
2013-08-08 22:27:13 +00:00
Rafael Espindola b6b5f52ee8 Add support for the 's' operation to llvm-ar.
If no other operation is specified, 's' becomes an operation instead of an
modifier. The s operation just creates a symbol table. It is the same as
running ranlib.

We assume the archive was created by a sane ar (like llvm-ar or gnu ar) and
if the symbol table is present, then it is current. We use that to optimize
the most common case: a broken build system that thinks it has to run ranlib.

llvm-svn: 187353
2013-07-29 12:40:31 +00:00
Rafael Espindola ce7f52db48 Add an initial implementation of archive symbol table generation.
The symbol table has forward references in the file. Instead of allocating
a temporary buffer or counting the size and then writing, this implementation
writes a dummy value first and patches it once the final value is known.

There is room for performance improvement. I will implement them as soon as I
get some other features (like a ranlib mode) in.

llvm-svn: 186934
2013-07-23 10:47:01 +00:00
Rafael Espindola 04397c1e9c Change archive-update.test to create a new file on the fly.
llvm-svn: 186206
2013-07-12 21:17:17 +00:00
Rafael Espindola 554eaad04e Rename directory to avoid problems on windows.
llvm-svn: 186202
2013-07-12 20:53:23 +00:00
Rafael Espindola 9cef215724 Add a test for llvm-ar's u option.
llvm-svn: 186192
2013-07-12 19:34:24 +00:00
Rafael Espindola f0c617264a Don't reject an empty archive.
llvm-svn: 186159
2013-07-12 13:32:28 +00:00
Rafael Espindola 3b5475c0f2 Move tests from test/Archive to test/Object.
There is no lib/Archive anymore and some archive tests were in test/Archive and
others in test/Object. Since archive is just one of the formats supported by
lib/Object, test/Object is probably the best location.

llvm-svn: 186038
2013-07-10 21:47:16 +00:00
Rafael Espindola 1cbed22836 Add support for archives with no symbol table or string table.
llvm-svn: 185664
2013-07-04 19:40:23 +00:00
Rafael Espindola 88ae7dd230 Add support for gnu archives with a string table and no symtab.
While there, use early returns to reduce nesting.

llvm-svn: 185547
2013-07-03 15:57:14 +00:00
Alexey Samsonov e6388e622e Basic support for parsing Mach-O universal binaries in LLVMObject library
llvm-svn: 184191
2013-06-18 15:03:28 +00:00
Sean Silva 81db71ff07 [yaml2obj] Remove fragile test case.
This test case was a "sanity check"/"breathing" test case at first, but
is really fragile, which impairs changes to yaml2obj.

`test/Object/yaml2obj-elf-bits-endian.test` is much more robust and
serves as an adequate sanity check.

llvm-svn: 183811
2013-06-12 00:01:26 +00:00
Sean Silva 864dd75093 Fix dubious type name similar to member name.
Should bring bots back to life.

llvm-svn: 183715
2013-06-11 00:13:52 +00:00
Sean Silva f99309cb08 [yaml2obj] Initial ELF support.
Currently, only emitting the ELF header is supported (no sections or
segments).

The ELFYAML code organization is broadly similar to the COFFYAML code.

llvm-svn: 183711
2013-06-10 23:44:15 +00:00
Kevin Enderby 273ae01b03 Teach llvm-objdump with the -macho parser how to use the data in code table
from the LC_DATA_IN_CODE load command.  And when disassembling print
the data in code formatted for the kind of data it and not disassemble those
bytes.

I added the format specific functionality to the derived class MachOObjectFile
since these tables only appears in Mach-O object files. This is my first
attempt to modify the libObject stuff so if folks have better suggestions
how to fit this in or suggestions on the implementation please let me know.

rdar://11791371

llvm-svn: 183424
2013-06-06 17:20:50 +00:00
Rafael Espindola e2e741ecdd Print symbol names in relocations when dumping COFF as YAML.
llvm-svn: 183403
2013-06-06 13:06:17 +00:00
Rafael Espindola 806f006490 Handle relocations that don't point to symbols.
In ELF (as in MachO), not all relocations point to symbols. Represent this
properly by using a symbol_iterator instead of a SymbolRef. Update llvm-readobj
ELF's dumper to handle relocatios without symbols.

llvm-svn: 183284
2013-06-05 01:33:53 +00:00
Rui Ueyama f4d0a8c13f [Object/COFF] Fix Windows .lib name handling.
llvm-svn: 183091
2013-06-03 00:27:03 +00:00
Rafael Espindola fa4513a178 Split Alignment out of the Section Characteristics.
The alignment is just a byte in the middle of Characteristics, not an
independent flag. Making it an independent field in the yaml
representation makes it more yamlio friendly.

llvm-svn: 181243
2013-05-06 20:11:21 +00:00
Amara Emerson d9104c0359 Revert r181009.
llvm-svn: 181079
2013-05-03 23:57:17 +00:00
Amara Emerson 2f54d9fe10 Add support for reading ARM ELF build attributes.
Build attribute sections can now be read if they exist via ELFObjectFile, and
the llvm-readobj tool has been extended with an option to dump this information
if requested. Regression tests are also included which exercise these features.

Also update the docs with a fixed ARM ABI link and a new link to the Addenda
which provides the build attributes specification.

llvm-svn: 181009
2013-05-03 11:36:35 +00:00
Rafael Espindola 1e48387962 Clarify getRelocationAddress x getRelocationOffset a bit.
getRelocationAddress is for dynamic libraries and executables,
getRelocationOffset for relocatable objects.

Mark the getRelocationAddress of COFF and MachO as not implemented yet. Add a
test of ELF's. llvm-readobj -r now prints the same values as readelf -r.

llvm-svn: 180259
2013-04-25 12:28:45 +00:00
Rafael Espindola 7f08d1b9a8 Fix typo.
llvm-svn: 180137
2013-04-23 19:39:34 +00:00
Rafael Espindola feef8c2469 Don't read one command past the end.
Thanks to Evgeniy Stepanov for reporting this.

It might be a good idea to add a command iterator abstraction to MachO.h, but
this fixes the bug for now.

llvm-svn: 179848
2013-04-19 11:36:47 +00:00
Rafael Espindola 7733466c73 Add back parsing of header charactestics.
It had been dropped during the switch to yaml::IO. Also add a test going
from yaml2obj to llvm-readobj. It can be extended as we add more
fields/formats to yaml2obj.

llvm-svn: 178786
2013-04-04 20:30:52 +00:00
Rafael Espindola 2025e8b820 Implement the "mips endian" for r_info.
Normally r_info is just a 32 of 64 bit number matching the endian of the rest
of the file. Unfortunately, mips 64 bit little endian is special: The top 32
bits are a little endian number and the following 32 are a big endian one.

llvm-svn: 178694
2013-04-03 21:02:51 +00:00
Michael J. Spencer c445408710 [Object][ELF] Fix incorrect size of members for the 64 version of Elf_Phdr_Impl.
llvm-svn: 171650
2013-01-06 03:57:11 +00:00
Michael J. Spencer 209565db2d [objdump] Add --private-headers, -p.
This currently prints the ELF program headers.

llvm-svn: 171649
2013-01-06 03:56:49 +00:00
Tim Northover 5edabc131a Teach MachO which sections contain code
llvm-svn: 170349
2012-12-17 17:59:32 +00:00
Shankar Easwaran 15b28be9da Adding changes to support GNU style archive library reading
llvm-svn: 167853
2012-11-13 18:38:42 +00:00
Nick Lewycky b82c0ec5a6 Add missing file for test.
llvm-svn: 163272
2012-09-05 23:52:20 +00:00
Jack Carter fc93516642 Moved input for objdump test from Mips to Inputs.
llvm-svn: 162808
2012-08-29 00:10:48 +00:00
Matt Beaumont-Gay 99fc2e19a6 Move test yaml files under Inputs until they are converted to be the actual
test files.

llvm-svn: 161219
2012-08-02 21:52:49 +00:00
Michael J. Spencer 1ffd9de4f1 Add yaml2obj. A utility to convert YAML to binaries.
yaml2obj takes a textual description of an object file in YAML format
and outputs the binary equivalent. This greatly simplifies writing
tests that take binary object files as input.

llvm-svn: 161205
2012-08-02 19:16:56 +00:00
Marshall Clow 78ade1dd08 Add relocation types for Hexagon processor; patch by Sidney Manning <sidneym@codeaurora.org>
llvm-svn: 159081
2012-06-23 14:46:18 +00:00
David Meyer 6c614bf717 Support reading GNU symbol versions in ELFObjectFile
* Add enums and structures for GNU version information.
* Implement extraction of that information on a per-symbol basis (ELFObjectFile::getSymbolVersion).
* Implement a generic interface, GetELFSymbolVersion(), for getting the symbol version from the ObjectFile (hides the templating).
* Have llvm-readobj print out the version, when available.
* Add a test for the new feature: readobj-elf-versioning.test

llvm-svn: 152436
2012-03-09 20:59:52 +00:00
David Meyer 2fc34c5f84 [Object]
* Add begin_dynamic_table() / end_dynamic_table() private interface to ELFObjectFile.
* Add begin_libraries_needed() / end_libraries_needed() interface to ObjectFile, for grabbing the list of needed libraries for a shared object or dynamic executable.
* Implement this new interface completely for ELF, leave stubs for COFF and MachO.
* Add 'llvm-readobj' tool for dumping ObjectFile information.

llvm-svn: 151785
2012-03-01 01:36:50 +00:00
Michael J. Spencer 8c4729fd44 [Object] Add {begin,end}_dynamic_symbols stubs and implementation for ELF.
Add -D option to llvm-nm to dump dynamic symbols.

Patch by David Meyer.

llvm-svn: 151600
2012-02-28 00:40:37 +00:00
Matt Beaumont-Gay da5e57cba1 Rename "TestObjectFiles" to "Inputs" (like the pattern for Clang tests)
llvm-svn: 143400
2011-10-31 23:46:38 +00:00