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Commit Graph

38 Commits

Author SHA1 Message Date
Preston Gurd
e52a5ca15b Implement GDB integration for source level debugging of code JITed using
the MCJIT execution engine.

The GDB JIT debugging integration support works by registering a loaded
object image with a pre-defined function that GDB will monitor if GDB
is attached. GDB integration support is implemented for ELF only at this
time. This integration requires GDB version 7.0 or newer.

Patch by Andy Kaylor!

 

llvm-svn: 154868
2012-04-16 22:12:58 +00:00
Eli Bendersky
ff2a79674c 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
2692a852bb 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
b86c4c6d24 Sink assert-only variables into the asserts
llvm-svn: 148849
2012-01-24 19:43:30 +00:00
Matt Beaumont-Gay
ea859b30be Silence warnings in -asserts build
llvm-svn: 148715
2012-01-23 18:46:04 +00:00
Eli Bendersky
d2042f3698 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
Danil Malyshev
5ce4e1a9d3 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
Chandler Carruth
e5e455c97f 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
3bbe062799 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
Owen Anderson
7a9bb4d47f 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
Michael J. Spencer
adc33b805a 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
25b0873d7f Object: Add isSymbolAbsolute and getSymbolSection.
llvm-svn: 142317
2011-10-17 23:54:46 +00:00
Michael J. Spencer
3f458c5498 Object: Add isSymbolWeak.
llvm-svn: 142316
2011-10-17 23:54:22 +00:00
Michael J. Spencer
3a7d4d9fe0 Object: Implement casting for concrete classes.
llvm-svn: 142314
2011-10-17 23:53:37 +00:00
Michael J. Spencer
c787cb4441 Object: Fix redundant name.
llvm-svn: 142238
2011-10-17 20:19:29 +00:00
Michael J. Spencer
10caa055b0 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
Nick Lewycky
70cfa65b6b Elf_Word is not POD! Stop using it in a DenseMap.
llvm-svn: 141851
2011-10-13 03:30:21 +00:00
NAKAMURA Takumi
35b6744077 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
Nick Lewycky
7cea83d5a5 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
c8160ebc71 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
76c927f5bd Revert r141605 as it broke tests for llvm-nm.
llvm-svn: 141614
2011-10-11 00:38:56 +00:00
Nick Lewycky
bf9a3771b7 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
ebd507f958 Object: add getSectionAlignment.
llvm-svn: 141581
2011-10-10 21:55:43 +00:00
Michael J. Spencer
3cc26e4c5e Fix GCC again.
llvm-svn: 141389
2011-10-07 19:46:12 +00:00
Michael J. Spencer
34d76cf95b 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
ecbddb2b9e 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
14925a859b Change relocation API to be per section.
llvm-svn: 141376
2011-10-07 18:15:25 +00:00
Michael J. Spencer
5948c3822e Object: Add isSection{Data,BSS}.
llvm-svn: 140721
2011-09-28 20:57:30 +00:00
Benjamin Kramer
52607b3842 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
3c40c2100b Add support for relocations to ObjectFile.
Patch by Danil Malyshev!

llvm-svn: 139314
2011-09-08 20:52:17 +00:00
Benjamin Kramer
5936e08079 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
Michael J. Spencer
83e956656a Object: Add proper error handling.
llvm-svn: 133872
2011-06-25 17:55:23 +00:00
Michael J. Spencer
d5934fefee Make Binary the parent of ObjectFile and update children to new interface.
llvm-svn: 133870
2011-06-25 17:54:50 +00:00
Michael J. Spencer
8288453980 Revert the last two commits in the series. r132911, r132912.
llvm-svn: 132913
2011-06-13 11:53:31 +00:00
Michael J. Spencer
642af05937 Make Binary the parent of ObjectFile and update children to new interface.
llvm-svn: 132911
2011-06-13 11:12:33 +00:00
Eric Christopher
0e88a490eb Assorted bugfixes in object file handling:
- Adds support for sniffing PE/COFF files on win32 (.exe and .dll)
   which are COFF files that have an MS-DOS compatibility stub on
   the front of them.

 - Fixes a bug in the COFFObjectFile's support for the Microsoft COFF
   extension for long symbol names, wherein it was attempting to parse
   the leading '/' in an extended symbol name reference as part of the
   integer offset.

 - Fixes bugs in COFFObjectFile and ELFObjectFile wherein section
   and symbol iterators were being returned with uninitialized bytes;
   the type DataRefImpl is a union between 2 32-bit words (d.a and d.b)
   and a single intptr_t word (p). Only p was being initialized, so in
   32-bit builds the result would be iterators with random upper 32-bit
   words in their DataRefImpls. This caused random failures when
   seeking around in object files.

Patch by Graydon Hoare!

llvm-svn: 128799
2011-04-03 22:53:19 +00:00
Michael J. Spencer
e4fe76fa22 Object: Fix type punned pointer issues by making DataRefImpl a union and using intptr_t.
llvm-svn: 123962
2011-01-21 02:27:02 +00:00
Michael J. Spencer
d54bad63f7 Object: Add ELF support.
llvm-svn: 123896
2011-01-20 06:38:47 +00:00