43 Commits

Author SHA1 Message Date
Michael J. Spencer
8de8364753 [ELF] Properly handle constant data.
With this hello world works with dietlibc on x86-64 Linux.

llvm-svn: 171711
2013-01-07 08:00:42 +00:00
Michael J. Spencer
1ac382f0c5 [ELF] Emit the file header and program headers at the beginning of the first segment.
This is required for the loader to correctly set AT_PHDR.

With this lld can correctly link against dietlibc and get to main.

llvm-svn: 171709
2013-01-07 08:00:04 +00:00
Michael J. Spencer
00b702c95c [ELF] Change Segment to hold Chunks instead of Sections. No functionality change.
llvm-svn: 171708
2013-01-07 07:59:46 +00:00
Michael J. Spencer
c8a12cce98 [ELF] Remove dead variable.
llvm-svn: 171707
2013-01-07 07:59:34 +00:00
Michael J. Spencer
28c6594c71 [ELF] Emit zeroFill as STT_OBJECT in the final executable. ld does this.
llvm-svn: 171704
2013-01-07 07:05:52 +00:00
Michael J. Spencer
cdb892488e [ELF] Add common x86_64 relocation types.
llvm-svn: 171703
2013-01-07 06:58:53 +00:00
Michael J. Spencer
c41d48fdee [ELF] Give a slightly better message for unknown relocation types.
llvm-svn: 171692
2013-01-07 04:51:17 +00:00
Michael J. Spencer
fd3981d6db [ELF] Update to llvm change.
llvm-svn: 171652
2013-01-06 05:40:27 +00:00
Reid Kleckner
e974bd1be9 Avoid MSVCRT assertion on comparing phdr iterators
llvm-svn: 171591
2013-01-05 02:21:42 +00:00
Michael J. Spencer
3124422a8b [ELF] Add skeleton for X86-64 relocations.
llvm-svn: 171578
2013-01-05 00:47:04 +00:00
Michael J. Spencer
5adebbd6a6 [ELF][Writer] Don't infinite loop.
This will be tested by a following committ that runs the linker
with no inputs.

llvm-svn: 171576
2013-01-05 00:46:23 +00:00
Michael J. Spencer
b14ac9b1fe Style
llvm-svn: 171575
2013-01-05 00:46:10 +00:00
Michael J. Spencer
65f6113d21 [ELF] STT_GNU_IFUNC is a known symbol type, so accept it. We do not yet implement its semantics.
llvm-svn: 171533
2013-01-04 21:25:25 +00:00
Michael J. Spencer
a2c9727810 [ELF] Handle misaligned ELF files properly.
llvm-svn: 171526
2013-01-04 21:09:21 +00:00
Shankar Easwaran
495d38bf46 add Changes to ELF Writer to layout sections/segments in the output executable
llvm-svn: 171135
2012-12-27 02:26:30 +00:00
Shankar Easwaran
bbf9ddda04 changes for the ELF Reader : split up into AtomsELF.h/Adding new permissions permRWX
llvm-svn: 171127
2012-12-27 01:40:08 +00:00
Shankar Easwaran
b3cb257b8b changes to fix Hexagon Relocation so that it accounts for the bitmask properly as documented in the ABI
llvm-svn: 171125
2012-12-27 01:04:00 +00:00
Michael J. Spencer
8ac9150556 [ELF][Reader] Ignore SHF_GROUP when switching on flags.
llvm-svn: 170624
2012-12-20 00:37:24 +00:00
Michael J. Spencer
6344b322e2 Style fixes.
llvm-svn: 170623
2012-12-20 00:37:10 +00:00
Benjamin Kramer
f7798e34c9 Add library dependencies to the lld cmake build.
llvm-svn: 169306
2012-12-04 21:09:04 +00:00
Hemant Kulkarni
736f7fbee2 Populate entry point into ELF executable.
llvm-svn: 168461
2012-11-21 21:07:36 +00:00
Hemant Kulkarni
87dbac00a9 Add program header emission to ELF writer. This patch also rearranges sections for efficient memory utilization
llvm-svn: 167874
2012-11-13 21:34:45 +00:00
Michael J. Spencer
a5d22811af Fix style violations.
llvm-svn: 167869
2012-11-13 19:58:58 +00:00
Shankar Easwaran
70b4dcfbcd Adding support to resolve symbols with archive libraries in lld
llvm-svn: 167854
2012-11-13 18:39:10 +00:00
Michael J. Spencer
a1913fbda9 [ELF] Fix -Woverloaded-virtual
llvm-svn: 167246
2012-11-01 19:46:19 +00:00
Michael J. Spencer
e337e60552 Fix cl brokeness.
cl is not attempting to complete a templated class when used in this
context. The conversion forces this to happen.

Thanks to Richard Smith for figuring this out.

llvm-svn: 167166
2012-10-31 20:47:30 +00:00
Michael J. Spencer
d2f7e50867 Add missing include.
llvm-svn: 167165
2012-10-31 20:47:11 +00:00
Sid Manning
823e8bb7be This patch changes the following:
* Use conventional naming for KindHandlers.
  * Add X86 relocation routines.
  * Use std::function instead of function pointers in _fixupHandler map.
  * Change _fixupHandler map from std::map to llvm::DenseMap.
  * Add simple testcase for x86 relocations.

llvm-svn: 166700
2012-10-25 17:53:04 +00:00
Sid Manning
2a59024ff8 This update does the following:
* Moves enum Scope from DefinedAtom.h to Atom.h
  * Adds scope method to AbsoluteAtom class
  * Updates YAML to print scope of AbsoluteAtoms
  * Update Native Reader/Writer to handle this new, "attribute"
  * Adds testcase 
Reviewed and approved by Nick Kledzik

llvm-svn: 166189
2012-10-18 17:16:19 +00:00
Sid Manning
42064e5b60 * Add relocation reference support for Hexagon and PowerPC.
- Hexagon has many relocation types, this patch covers just
      a subset, more will be added.
    - PowerPC support was added so that we can verify mixed endian
      environments.
  * Add some basic test cases
  * Update ldd-core to accept -endian flag

llvm-svn: 165477
2012-10-09 02:20:47 +00:00
Sid Manning
e3612f0f21 Fix incorrect setting of EI_DATA
llvm-svn: 165310
2012-10-05 14:06:24 +00:00
Hemant Kulkarni
8bd276120f Added missing break in StockSectionChunk constructor.
Removed architecture dependent .sbss section creation.

Updated test case to show the change in section types and removal of a sbss section.

llvm-svn: 165181
2012-10-03 23:27:33 +00:00
Sid Manning
05c82a42dd * Return correct size and alignment for common symbols.
llvm-svn: 165170
2012-10-03 21:46:48 +00:00
Hemant Kulkarni
08e410293f Emit symbol tables.
Reorganize to derive all sections from SectionChunk.
Construct section table header from SectionChunk.

llvm-svn: 164981
2012-10-01 23:53:20 +00:00
Sid Manning
e861d43f65 This change:
* Updates ReaderELF.cpp contentType method to match ELF.h's logic and now handle
    typeData
  * Add -arch to ldd-core testdriver
  * Add testcase to check typeData
  * Update others to stay in sync with this change.

llvm-svn: 164976
2012-10-01 23:23:05 +00:00
Sid Manning
d3a7e7e164 Add case for typeConstant in SectionChunk
llvm-svn: 164732
2012-09-26 22:46:17 +00:00
Sid Manning
dd11020739 This patch makes use of recently added relocation reference data. The bulk
of this is derived from the Mach-O writer.  Reviewed by: Nick Kledzik.
 * Adds loop to SectionChunk::write traverse references calling the
   writer's fixup handler, applyFixup.
 * Adds method, ELFWriter::buildAtomToAddressMap to that creates a
   mapping from an atom to its runtime address.
 * Adds method, ELFWriter::addressOfAtom to return the runtime address
   of the atom. 

llvm-svn: 164618
2012-09-25 18:22:09 +00:00
Sid Manning
8caf4de31f Add ELFReference class - parse relocations needed by that class and update DefinedAtom to use the class. Tweak coding style. Add testcase to check relocations. Change was signed-off-by: Michael Spencer
llvm-svn: 164027
2012-09-17 12:49:38 +00:00
Hemant Kulkarni
927bbc2871 ELF support for LLD writer. The writer at present emits ELF header and section
table header. Skeleton code for ReferenceKinds.
Credits:
Doxygen by  Michael Spencer.
Origianl implementation from Macho by Sidney Manning.
Templatization, implementation of section header chunks, string table, ELF header by Hemant Kulkarni.

llvm-svn: 163906
2012-09-14 16:11:34 +00:00
Michael J. Spencer
69ed53ab5f Fix warnings.
llvm-svn: 163573
2012-09-10 23:46:58 +00:00
Sid Manning
429a4bc172 Fix warning from -Wshadow. Report errors back to caller rather than calling
llvm::report_fatal_error.

llvm-svn: 160864
2012-07-27 14:52:18 +00:00
Sid Manning
1a60141f99 Implement the ELF reader. The original implementation was by Hemant Kulkarni
with subsequent changes to use lower level interfaces done by me.

llvm-svn: 160732
2012-07-25 16:27:21 +00:00
Nick Kledzik
abb6981f68 Major refactoring: Remove Platform concept. In its place there are
now Reader and Writer subclasses for each file format.  Each Reader and
Writer subclass defines an "options" class which controls how that Reader
or Writer operates.

llvm-svn: 157774
2012-05-31 22:34:00 +00:00