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193 Commits

Author SHA1 Message Date
David Meyer 7e4b976c36 [Object] Add symbol attribute flags: ST_ThreadLocal, ST_Common, and ST_Undefined. Implement these completely for ELF. 
Rename ST_External to ST_Unknown, and slightly change its semantics. It now only indicates that the symbol's type
is unknown, not that the symbol is undefined. (For that, use ST_Undefined).

llvm-svn: 151696
 2012-02-29 02:11:55 +00:00
David Meyer 1df4b84db4 In the ObjectFile interface, replace isInternal(), isAbsolute(), isGlobal(), and isWeak(), with a bitset of flags. 
llvm-svn: 151670
 2012-02-28 23:47:53 +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
Benjamin Kramer 453173f09a Remove static ctor. 
llvm-svn: 151160
 2012-02-22 13:42:11 +00:00
Eli Bendersky c7d23ddbbb Expose the ELFObjectFile class directly in the Object/ELF.h header, similarly 
to what's done for MachO and COFF. This allows advanced uses of the class to
be implemented outside the Object library. In particular, the DyldELFObject
subclass is now moved into its logical home - ExecutionEngine/RuntimeDyld.

This patch was reviewed by Michael Spencer.

llvm-svn: 150327
 2012-02-12 06:12:10 +00:00
Dylan Noblesmith 1d966ae18e Object: avoid undefined behavior when bounds-checking 
Don't form an out of bounds pointer just to test if it
would be out of bounds.

Also perform the same bounds checking for all the previous
mapped structures.

llvm-svn: 149750
 2012-02-04 02:41:39 +00:00
Matt Beaumont-Gay 88297ef665 Sink assert-only variables into the asserts 
llvm-svn: 148849
 2012-01-24 19:43:30 +00:00
Matt Beaumont-Gay 54db64e2e4 Silence warnings in -asserts build 
llvm-svn: 148715
 2012-01-23 18:46:04 +00:00
Eli Bendersky bff72ba77e Remove trailing spaces 
llvm-svn: 148654
 2012-01-22 09:02:48 +00:00
Eli Bendersky c3c80f0986 Basic runtime dynamic loading capabilities added to ELFObjectFile, implemented 
in a subclass named DyldELFObject. This class supports rebasing the object file
it represents by re-mapping section addresses to the actual memory addresses
the object was placed in. This is required for MC-JIT implementation on ELF with
debugging support.

Patch reviewed on llvm-commits.

Developed together with Ashok Thirumurthi and Andrew Kaylor.

llvm-svn: 148653
 2012-01-22 09:01:03 +00:00
Rafael Espindola 2d3dac3e87 Remove unused variables. 
llvm-svn: 147261
 2011-12-25 01:20:19 +00:00
David Blaikie a379b18173 Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch 
llvm-svn: 146960
 2011-12-20 02:50:00 +00:00
Daniel Dunbar 27a7489a03 LLVMBuild: Remove trailing newline, which irked me. 
llvm-svn: 146409
 2011-12-12 19:48:00 +00:00
Daniel Dunbar 539d0a8a09 build/CMake: Finish removal of add_llvm_library_dependencies. 
llvm-svn: 145420
 2011-11-29 19:25:30 +00:00
Danil Malyshev cbe72fc959 Fixed ObjectFile functions: 
- getSymbolOffset() renamed as getSymbolFileOffset()
- getSymbolFileOffset(), getSymbolAddress(), getRelocationAddress() returns same result for ELFObjectFile, MachOObjectFile and COFFObjectFile.
- added getRelocationOffset()
- fixed MachOObjectFile::getSymbolSize()
- fixed MachOObjectFile::getSymbolSection()
- fixed MachOObjectFile::getSymbolOffset() for symbols without section data.

llvm-svn: 145408
 2011-11-29 17:40:10 +00:00
Daniel Dunbar 9339d4556e Fix some possible gcc-4.2 may be used uninitialized warnings. 
llvm-svn: 145292
 2011-11-28 22:19:32 +00:00
Chandler Carruth 37ab257b88 Revert r145180 as it is causing test failures on all the bots. 
Original commit message:
Fixed ObjectFile functions:
- getSymbolOffset() renamed as getSymbolFileOffset()
- getSymbolFileOffset(), getSymbolAddress(), getRelocationAddress() returns same result for ELFObjectFile, MachOObjectFile and COFFObjectFile.
- added getRelocationOffset()
- fixed MachOObjectFile::getSymbolSize()
- fixed MachOObjectFile::getSymbolSection()
- fixed MachOObjectFile::getSymbolOffset() for symbols without section data.

llvm-svn: 145182
 2011-11-27 10:37:47 +00:00
Danil Malyshev 2631f93f7d Fixed ObjectFile functions: 
- getSymbolOffset() renamed as getSymbolFileOffset()
- getSymbolFileOffset(), getSymbolAddress(), getRelocationAddress() returns same result for ELFObjectFile, MachOObjectFile and COFFObjectFile.
- added getRelocationOffset()
- fixed MachOObjectFile::getSymbolSize()
- fixed MachOObjectFile::getSymbolSection()
- fixed MachOObjectFile::getSymbolOffset() for symbols without section data.

llvm-svn: 145180
 2011-11-27 10:12:52 +00:00
Michael J. Spencer d27d51fbaf Object/COFF: Support common symbols. 
llvm-svn: 144861
 2011-11-16 23:36:12 +00:00
Daniel Dunbar 52823cc91c build: Attempt to rectify inconsistencies between CMake and LLVMBuild versions of explicit dependencies. 
- The hope is that we have a tool/test to verify these are accurate (and tight) soon.

llvm-svn: 144444
 2011-11-12 02:10:57 +00:00
Michael J. Spencer d5930ca99d Object/COFF: Fix PE reading. 
llvm-svn: 144148
 2011-11-08 23:34:07 +00:00
Benjamin Kramer c1cb1be9b4 MachOObject: Use DataExtractor's uleb parser instead of rolling our own. 
llvm-svn: 143810
 2011-11-05 12:13:21 +00:00
Benjamin Kramer 4246ca4021 Simplify code. 
llvm-svn: 143695
 2011-11-04 13:52:17 +00:00
Daniel Dunbar bf9bba47a1 build: Add initial cut at LLVMBuild.txt files. 
llvm-svn: 143634
 2011-11-03 18:53:17 +00:00
Chad Rosier d294af104a Removed unused variable. 
llvm-svn: 143591
 2011-11-02 23:21:55 +00:00
Michael J. Spencer d0f5b0e194 object/COFF: Properly initalize uses of DataRefImpl. 
llvm-svn: 143562
 2011-11-02 19:33:26 +00:00
Michael J. Spencer e03ea9cd71 Object/Archive: Add symbol table iteration. 
llvm-svn: 143561
 2011-11-02 19:33:12 +00:00
Owen Anderson debe01c660 If we're searching for a symbol reference to pretty-print a scattered relocation address, and we don't find a symbol table entry, try section begin addresses as well. 
llvm-svn: 143151
 2011-10-27 21:53:50 +00:00
Owen Anderson 62972f5cd3 Fix pretty printing of i386 local sect diff relocations, TLV relocations, and x86_64 TLV relocations in MachO. 
llvm-svn: 143140
 2011-10-27 20:46:09 +00:00
Owen Anderson f7a89d06ec Expose relocation accessors through the libObject C API. 
llvm-svn: 143109
 2011-10-27 17:32:36 +00:00
Owen Anderson e245af65fa Add relocation iterators to the libObject C API. 
llvm-svn: 143107
 2011-10-27 17:15:47 +00:00
Owen Anderson bc14bd3bfb Add support for scattered relocations to the MachO relocatation pretty printer. 
llvm-svn: 143051
 2011-10-26 20:42:54 +00:00
Owen Anderson 90c49c037e The order of the two symbol listings in a Macho x86_64 subtractor relocation is reversed from what seems intuitive to me. 
llvm-svn: 143035
 2011-10-26 17:28:49 +00:00
Owen Anderson 04e46b6ae4 Include the full 64 bits of relocation data in the type info for MachO relocations, so that we can recognize scattered relocations. 
llvm-svn: 143033
 2011-10-26 17:10:22 +00:00
Owen Anderson 7be76590e6 Expand relocation type field to 64 bits. MachO scattered relocations require 33 bits of type info. 
llvm-svn: 143032
 2011-10-26 17:08:49 +00:00
Owen Anderson b92de2de71 Improve pretty printing of GOT relocations in MachO on x86_64. 
llvm-svn: 143031
 2011-10-26 17:05:20 +00:00
Eric Christopher ff37313f12 Remove unused variable. 
llvm-svn: 143011
 2011-10-26 03:47:16 +00:00
Michael J. Spencer 6e080ddb31 Object/Archive: Cleanup anon namespace. 
llvm-svn: 142983
 2011-10-25 22:31:11 +00:00
Michael J. Spencer 9aaa852336 Object/Archive: Add BSD style long file name support and skip internal members. 
llvm-svn: 142981
 2011-10-25 22:30:42 +00:00
Owen Anderson 377137e2ed Remove extraneous printing of "-PC". 
llvm-svn: 142970
 2011-10-25 20:44:00 +00:00
Owen Anderson fa3e5200b8 Add support for the notion of "hidden" relocations. On MachO, these are relocation entries that are used as additional information for other, real relocations, rather than being relocations themselves. 
I'm not familiar enough with ELF or COFF to know if they should have any relocations marked hidden.

llvm-svn: 142961
 2011-10-25 20:35:53 +00:00
Owen Anderson 52cd8acafc Teach the MachO relocation pretty-printer to interpret ARM half-relocations. 
llvm-svn: 142938
 2011-10-25 18:48:41 +00:00
Owen Anderson 171f485f15 More fixes and improvements to MachO relocation pretty-printing, particular for x86 and x86_64 relocations with addends. 
llvm-svn: 142875
 2011-10-24 23:20:07 +00:00
Owen Anderson c8c94da8c8 Get relocation parsing/dumping to a mostly-working state for MachO files. 
llvm-svn: 142852
 2011-10-24 21:44:00 +00:00
Owen Anderson 953af053eb Stub out some of the MachO relocation decoding hooks. 
llvm-svn: 142840
 2011-10-24 20:19:18 +00:00
Owen Anderson 500ebeb87f Use LLVMBool for a function that logically returns a boolean value. 
llvm-svn: 142683
 2011-10-21 20:35:58 +00:00
Owen Anderson cef5641982 STABS symbols are debug symbols. 
llvm-svn: 142673
 2011-10-21 19:26:54 +00:00
Owen Anderson 07bfdbb233 Bind libObject API for obtaining the section containing a Symbol. 
llvm-svn: 142667
 2011-10-21 18:21:22 +00:00
Owen Anderson f239db40d5 Expand the coverage of the libObject C bindings to include more SectionRef accessors as well as Symbol iterators. 
llvm-svn: 142661
 2011-10-21 17:50:59 +00:00
Michael J. Spencer 443410d722 Object/COFF: Remove useless test. 
llvm-svn: 142408
 2011-10-18 19:51:36 +00:00
Michael J. Spencer 097be9f63c Object/COFF: Change type from a struct to a uint16_t. The struct would be 
incorrect for bigendian systems.

llvm-svn: 142403
 2011-10-18 19:31:59 +00:00
Michael J. Spencer 1d19f97ea5 Object: Add some types to SymbolRef::Type. 
Some of these can be true at the same time and there are a lot to add,
so this should be turned into a bitfield. Some of the other accessors
should probably be folded into this.

llvm-svn: 142318
 2011-10-17 23:55:06 +00:00
Michael J. Spencer 321731539e Object: Add isSymbolAbsolute and getSymbolSection. 
llvm-svn: 142317
 2011-10-17 23:54:46 +00:00
Michael J. Spencer 017597540e Object: Add isSymbolWeak. 
llvm-svn: 142316
 2011-10-17 23:54:22 +00:00
Michael J. Spencer 89a7a5ea1f Object/COFF: Expose more data in the public API. 
llvm-svn: 142315
 2011-10-17 23:53:56 +00:00
Michael J. Spencer 4f91c2f2bd Object: Implement casting for concrete classes. 
llvm-svn: 142314
 2011-10-17 23:53:37 +00:00
Michael J. Spencer d39466760a Object: Fix redundant name. 
llvm-svn: 142238
 2011-10-17 20:19:29 +00:00
Michael J. Spencer 834bd602e6 ELF: Fix the section that relocations apply to. Add test to verify. Patch by Danil Malyshev! 
llvm-svn: 141901
 2011-10-13 22:30:10 +00:00
Michael J. Spencer 9a28851e52 COFF: Implement sectionContainsSymbol for relocatable files only. 
llvm-svn: 141884
 2011-10-13 20:36:54 +00:00
Nick Lewycky d3043965b9 Elf_Word is not POD! Stop using it in a DenseMap. 
llvm-svn: 141851
 2011-10-13 03:30:21 +00:00
Owen Anderson 000721f058 The VMAs stored in the symbol table of a MachO file are absolute addresses, not offsets from the section. 
llvm-svn: 141828
 2011-10-12 22:37:10 +00:00
Owen Anderson 34e1707fbb Don't label a STAB debugging symbol as a function symbol. 
llvm-svn: 141824
 2011-10-12 22:23:12 +00:00
Owen Anderson fb02ecde5e sectionContainsSymbol needs to be based on VMA's rather than section indices to properly account for files with segment load commands that contain no sections. 
llvm-svn: 141822
 2011-10-12 22:21:32 +00:00
Owen Anderson f903c154c7 Section indices in MachO symbol tables begin at 1, not 0. 
llvm-svn: 141815
 2011-10-12 21:43:24 +00:00
NAKAMURA Takumi 9bfcf77638 lib/Object/ELFObjectFile.cpp: Fix undefined behavior for MC/ELF/many-section.s not to fail (on msvc). 
DenseMap::lookup(k) would return "default constructor value" when k was not met. It would be useless when value type were POD.

llvm-svn: 141774
 2011-10-12 10:28:55 +00:00
Owen Anderson 27c579dba4 Expose MachOObjectFile externally, like we do for COFF. First step in reducing the amount of special-purpose code needed for llvm-objdump. 
llvm-svn: 141684
 2011-10-11 17:32:27 +00:00
Nick Lewycky 43f01cae95 Reapply r141605 with fixes for appropriate handling of reserved section numbers 
in st_shndx fields.

llvm-svn: 141639
 2011-10-11 03:18:58 +00:00
Nick Lewycky 7adc4370e0 Add support for .symtab_shnidx. Unfortunately, doing this required breaking a 
layer of abstraction around SymbolRef where you can read its private
SymbolPimpl member.

llvm-svn: 141636
 2011-10-11 02:57:48 +00:00
Nick Lewycky 35a90c4baf Revert r141605 as it broke tests for llvm-nm. 
llvm-svn: 141614
 2011-10-11 00:38:56 +00:00
Nick Lewycky fdbb7c51e9 Add support for reading many-section ELF files. 
If you want to tackle adding the testcase, let me know. It's a 4.2MB ELF file
and I'll be happy to mail it to you.

llvm-svn: 141605
 2011-10-11 00:15:42 +00:00
Michael J. Spencer ee3be4f2a9 Fix warning. 
llvm-svn: 141597
 2011-10-10 23:36:56 +00:00
Michael J. Spencer 7989460a1f Object: add getSectionAlignment. 
llvm-svn: 141581
 2011-10-10 21:55:43 +00:00
NAKAMURA Takumi 648b2fafd8 lib/Object: Suppress warnings on gcc-4.3.4 cygwin 
llvm-svn: 141485
 2011-10-08 11:22:53 +00:00
Michael J. Spencer 159970f733 Object: Add support for opening stdin. 
llvm-svn: 141449
 2011-10-08 00:17:58 +00:00
Michael J. Spencer 7eb8159927 Object: constize Archive. 
llvm-svn: 141448
 2011-10-08 00:17:45 +00:00
Michael J. Spencer cfb6cc7b14 Fix GCC again. 
llvm-svn: 141389
 2011-10-07 19:46:12 +00:00
Michael J. Spencer e5fd004719 Change relocation API to be per section. This time without breaking GCC. 
llvm-svn: 141385
 2011-10-07 19:25:32 +00:00
Bill Wendling 206d8a7f48 Revert 141376 and 141377 due to breaking the build. 
--- Reverse-merging r141377 into '.':
U    tools/llvm-objdump/MachODump.cpp
--- Reverse-merging r141376 into '.':
U    include/llvm/Object/COFF.h
U    include/llvm/Object/ObjectFile.h
U    include/llvm-c/Object.h
U    tools/llvm-objdump/llvm-objdump.cpp
U    lib/Object/MachOObjectFile.cpp
U    lib/Object/COFFObjectFile.cpp
U    lib/Object/Object.cpp
U    lib/Object/ELFObjectFile.cpp

llvm-svn: 141379
 2011-10-07 18:25:37 +00:00
Michael J. Spencer b0d61540cb Change relocation API to be per section. 
llvm-svn: 141376
 2011-10-07 18:15:25 +00:00
Michael J. Spencer 800619f2bb Object: Add isSection{Data,BSS}. 
llvm-svn: 140721
 2011-09-28 20:57:30 +00:00
Michael J. Spencer d3b7b12618 Object: Add archive support. 
llvm-svn: 140626
 2011-09-27 19:36:55 +00:00
Benjamin Kramer 75d1cf3391 Object: make the following changes into SymbolRef 
- Add enum SymbolType and function getSymbolType()
- Add function isGlobal() - it's returns true for symbols that can be used in another objects, such as library functions.
- Rename function getAddress() to getOffset() and add new function getAddress(), because currently getAddress() returns section offset of symbol first byte. new getAddress() return symbol address.
- Change usage SymbolRef::getAddress() to getOffset() in tools/llvm-nm and tools/llvm-objdump.

Patch by Danil Malyshev!

llvm-svn: 139683
 2011-09-14 01:22:52 +00:00
Benjamin Kramer 557a81e9d7 ObjectFile: Add support for mach-o-style dSYM companion files. 
llvm-svn: 139676
 2011-09-14 00:39:22 +00:00
Benjamin Kramer 40ddfedd6c Silence false positive uninitialized variable warnings from GCC. 
llvm-svn: 139573
 2011-09-13 01:59:24 +00:00
Benjamin Kramer eba0b40384 Remove dead code. 
llvm-svn: 139343
 2011-09-09 00:22:05 +00:00
Nick Lewycky 940b598f6f Fix release build: 
MachOObjectFile.cpp:524: error: unused variable 'NumLoadCommands' [-Wunused-variable]

llvm-svn: 139341
 2011-09-09 00:16:50 +00:00
Benjamin Kramer 022ecdf277 Add support for relocations to ObjectFile. 
Patch by Danil Malyshev!

llvm-svn: 139314
 2011-09-08 20:52:17 +00:00
Benjamin Kramer 58298f028c Teach macho-dump to dump the uleb128s referred to by linkedit_data segments. 
llvm-svn: 138836
 2011-08-30 22:10:58 +00:00
Benjamin Kramer 267a6d92fa Teach macho-dump how to dump linkedit_data load commands. 
llvm-svn: 138807
 2011-08-30 18:33:37 +00:00
Chandler Carruth 9d7feab3e0 Rewrite the CMake build to use explicit dependencies between libraries, 
specified in the same file that the library itself is created. This is
more idiomatic for CMake builds, and also allows us to correctly specify
dependencies that are missed due to bugs in the GenLibDeps perl script,
or change from compiler to compiler. On Linux, this returns CMake to
a place where it can relably rebuild several targets of LLVM.

I have tried not to change the dependencies from the ones in the current
auto-generated file. The only places I've really diverged are in places
where I was seeing link failures, and added a dependency. The goal of
this patch is not to start changing the dependencies, merely to move
them into the correct location, and an explicit form that we can control
and change when necessary.

This also removes a serialization point in the build because we don't
have to scan all the libraries before we begin building various tools.
We no longer have a step of the build that regenerates a file inside the
source tree. A few other associated cleanups fall out of this.

This isn't really finished yet though. After talking to dgregor he urged
switching to a single CMake macro to construct libraries with both
sources and dependencies in the arguments. Migrating from the two macros
to that style will be a follow-up patch.

Also, llvm-config is still generated with GenLibDeps.pl, which means it
still has slightly buggy dependencies. The internal CMake
'llvm-config-like' macro uses the correct explicitly specified
dependencies however. A future patch will switch llvm-config generation
(when using CMake) to be based on these deps as well.

This may well break Windows. I'm getting a machine set up now to dig
into any failures there. If anyone can chime in with problems they see
or ideas of how to solve them for Windows, much appreciated.

llvm-svn: 136433
 2011-07-29 00:14:25 +00:00
Benjamin Kramer f6f3e81c07 ObjectFile: Add a method to check whether a section contains a symbol. 
- No ELF or COFF implementation yet, I don't have a way to test that.
  Should be straightforward to add though.

llvm-svn: 135288
 2011-07-15 18:39:21 +00:00
Benjamin Kramer 99582e9b52 MachOObjectFile: Get symbol functions ready for 64 bit. 
llvm-svn: 135282
 2011-07-15 17:32:45 +00:00
Benjamin Kramer c41d4fe243 Output MachO section names in the form SEGMENT,section. 
llvm-svn: 135231
 2011-07-15 00:29:02 +00:00
Benjamin Kramer 56498d167a Add support for 64 bit objects to MachOObjectFile. 
- I don't see a better way than duplicating all the code.

llvm-svn: 135229
 2011-07-15 00:14:48 +00:00
Benjamin Kramer b1d80722a8 MachOObjectFile: Change isSectionText to return true for sections named text, not for load commands name __TEXT (which isn't the case in actual object files) 
llvm-svn: 135228
 2011-07-15 00:14:46 +00:00
Benjamin Kramer e6490e03d7 Use memcmp. 
llvm-svn: 134439
 2011-07-05 20:28:00 +00:00
Rafael Espindola bac192d6cf Really fix typo :-( 
llvm-svn: 134436
 2011-07-05 19:17:10 +00:00
Rafael Espindola 5a0f0fba30 Fix typo. 
llvm-svn: 134433
 2011-07-05 19:13:27 +00:00
Rafael Espindola 00aae24a08 Compare all 4 bytes of the header. 
llvm-svn: 134427
 2011-07-05 18:41:47 +00:00
Michael J. Spencer 5ebaed2404 Fix warnings. 
llvm-svn: 134408
 2011-07-05 14:48:59 +00:00