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38 Commits

Author SHA1 Message Date
Preston Gurd 689ff9c00f 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!

 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154868 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-16 22:12:58 +00:00
Eli Bendersky f4eff4baeb 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.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150327 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-12 06:12:10 +00:00
Dylan Noblesmith 069df954a1 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149750 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-04 02:41:39 +00:00
Matt Beaumont-Gay 7f64823edb Sink assert-only variables into the asserts 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148849 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-24 19:43:30 +00:00
Matt Beaumont-Gay ee705a73f6 Silence warnings in -asserts build 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148715 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-23 18:46:04 +00:00
Eli Bendersky 24973c1063 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148653 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-22 09:01:03 +00:00
Danil Malyshev b0436a7305 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145408 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-29 17:40:10 +00:00
Chandler Carruth 790552c20f 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145182 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-27 10:37:47 +00:00
Danil Malyshev 9b24738bd1 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145180 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-27 10:12:52 +00:00
Owen Anderson 9472b8d220 Expand relocation type field to 64 bits. MachO scattered relocations require 33 bits of type info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143032 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-26 17:08:49 +00:00
Michael J. Spencer 206d17cf60 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142318 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-17 23:55:06 +00:00
Michael J. Spencer 9b2b812fea Object: Add isSymbolAbsolute and getSymbolSection. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142317 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-17 23:54:46 +00:00
Michael J. Spencer c38c36a8c4 Object: Add isSymbolWeak. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142316 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-17 23:54:22 +00:00
Michael J. Spencer ab6bcf35ae Object: Implement casting for concrete classes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142314 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-17 23:53:37 +00:00
Michael J. Spencer 1130a799ab Object: Fix redundant name. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142238 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-17 20:19:29 +00:00
Michael J. Spencer 63b2f8c710 ELF: Fix the section that relocations apply to. Add test to verify. Patch by Danil Malyshev! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141901 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-13 22:30:10 +00:00
Nick Lewycky f77dea13d7 Elf_Word is not POD! Stop using it in a DenseMap. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141851 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-13 03:30:21 +00:00
NAKAMURA Takumi 18dcb87f6b 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141774 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-12 10:28:55 +00:00
Nick Lewycky bfbbe32837 Reapply r141605 with fixes for appropriate handling of reserved section numbers 
in st_shndx fields.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141639 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-11 03:18:58 +00:00
Nick Lewycky 15c3f727ae Add support for .symtab_shnidx. Unfortunately, doing this required breaking a 
layer of abstraction around SymbolRef where you can read its private
SymbolPimpl member.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141636 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-11 02:57:48 +00:00
Nick Lewycky fb05d3d686 Revert r141605 as it broke tests for llvm-nm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141614 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-11 00:38:56 +00:00
Nick Lewycky fad138dd79 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141605 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-11 00:15:42 +00:00
Michael J. Spencer e2f2f07be7 Object: add getSectionAlignment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141581 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-10 21:55:43 +00:00
Michael J. Spencer 01a4db3ed4 Fix GCC again. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141389 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-07 19:46:12 +00:00
Michael J. Spencer 4344b1ef9b Change relocation API to be per section. This time without breaking GCC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141385 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-07 19:25:32 +00:00