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209 Commits

Author SHA1 Message Date
Michael J. Spencer 8b3898af26 [ELF] Never allocate content to weak symbols as they may be merged away. 
This is done by creating a new non-weak anonymous symbol and creating
an atom with content for that symbol. This is added after the weak symbol
so that they have the same address.

llvm-svn: 172553
 2013-01-15 21:13:02 +00:00
Michael J. Spencer 842885e06e [ELF] Refactoring and style cleanup. No functionality change. 
llvm-svn: 172552
 2013-01-15 21:12:45 +00:00
Michael J. Spencer b03f6c489a [ELF] Update for LLVM Object/ELF changes. 
llvm-svn: 172516
 2013-01-15 07:53:22 +00:00
Michael J. Spencer bb78a04088 [ELF] Replace [...] x_{begin,end}() with range<[...]> x(). 
llvm-svn: 172513
 2013-01-15 06:55:37 +00:00
Michael J. Spencer 7fe77f8c61 [ELF] Fix use of LLVM RTTI. 
llvm-svn: 172511
 2013-01-15 06:55:11 +00:00
Shankar Easwaran f6dc082f91 remove const from FindByName 
llvm-svn: 172507
 2013-01-15 03:02:33 +00:00
Nick Kledzik 233f537799 Add new merge-by-content Merge attribute for use by anonymous 
constants and string literals which the linker should coalesce.

llvm-svn: 172495
 2013-01-15 00:17:57 +00:00
Nick Kledzik 343ecbd6ba Fix shadowed variable warning 
llvm-svn: 172482
 2013-01-14 22:10:22 +00:00
Michael J. Spencer 74ba722be1 [YAML] Fix undefined behavior. 
llvm-svn: 172338
 2013-01-13 01:09:39 +00:00
Michael J. Spencer 57752dc56e Factor File::addAtom out to MutableFile::addAtom. 
This removes a bunch of llvm_unreachables and makes a File's mutability part of the type system.

llvm-svn: 172297
 2013-01-12 02:45:54 +00:00
Michael J. Spencer 3756852d62 [ELF] Fix comment. 
llvm-svn: 172266
 2013-01-11 22:39:56 +00:00
Michael J. Spencer 4ffbd608cd [ELF] Add AtomLayout instead of using pair<Atom, pair<uint64_t, uint64_t>>. 
llvm-svn: 172265
 2013-01-11 22:39:44 +00:00
Michael J. Spencer 2a5763cd86 [ELF] Use the correct cast. 
llvm-svn: 172264
 2013-01-11 22:39:31 +00:00
Michael J. Spencer bbe4b9812b [ELF] Simplify assert. 
llvm-svn: 172255
 2013-01-11 21:38:36 +00:00
Shankar Easwaran b1d09c07f1 better implementation for findOutputSection 
llvm-svn: 172236
 2013-01-11 18:56:11 +00:00
Shankar Easwaran 7381db059a add noinhibit exec option 
llvm-svn: 172204
 2013-01-11 15:11:47 +00:00
Shankar Easwaran d127d8169a add hexagon target to lld 
llvm-svn: 172202
 2013-01-11 15:01:04 +00:00
Michael J. Spencer ecd5f4062f [ELF] Add support for __init_array_{start,end}. 
With this change c++ global constructors and destructors work.

llvm-svn: 172133
 2013-01-10 22:41:42 +00:00
Michael J. Spencer aa8a5a2ab2 [ELF] Fixed -Wunused in -asserts mode. 
llvm-svn: 172131
 2013-01-10 22:41:05 +00:00
Shankar Easwaran 37c528259a style changes 
llvm-svn: 172080
 2013-01-10 18:16:10 +00:00
Shankar Easwaran 2ca8e7d733 support for adding linker defined symbols 
llvm-svn: 172040
 2013-01-10 03:16:27 +00:00
Michael J. Spencer ad5f00ea2d [Archive] Use a hash map to lookup symbols in archives. Increases performance of linking lua by ~6x. 
llvm-svn: 172028
 2013-01-10 01:27:45 +00:00
Nick Kledzik cc3d2dca60 Better tie together ContentType and Permissions. 
Since most content types (e.g. typeCode) have a 
preferred Permission, add a function to do that mapping.
Then hook up to YAML Reader and Writer such that
the 'permissions:' key does not need to be specified unless
overriding what the content type prefers.

llvm-svn: 171929
 2013-01-09 01:17:12 +00:00
Nick Kledzik bd49198409 add extra namespace for gcc-4.7 compatibility 
llvm-svn: 171918
 2013-01-08 23:51:03 +00:00
Nick Kledzik 80fe907903 fix typo 
llvm-svn: 171916
 2013-01-08 23:43:11 +00:00
Michael J. Spencer 6047163a24 [lld] Add support for -mllvm. 
There is no way to test this at the moment because the options are not
processed until the link starts, and we can't pass an empty file.

llvm-svn: 171910
 2013-01-08 22:59:27 +00:00
Michael J. Spencer 79fafccb5e [Driver] Fix indentation. 
llvm-svn: 171909
 2013-01-08 22:59:01 +00:00
Nick Kledzik 8a3052eab0 Rename YAML key 'fixups:' to 'references:' 
llvm-svn: 171898
 2013-01-08 21:12:13 +00:00
Michael J. Spencer d2a4ccf8f9 [ELF] Add R_X86_64_64 relocation. 
llvm-svn: 171836
 2013-01-08 02:12:15 +00:00
Michael J. Spencer 8f80cd92d9 [lld] Add and ignore some flags for ld compat. 
llvm-svn: 171835
 2013-01-08 02:12:01 +00:00
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 956b03618c [lld] Add -emit-yaml option. This outputs yaml instead of a binary. 
llvm-svn: 171710
 2013-01-07 08:00:25 +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 0c3f25ead9 [Driver] x86-64 should use ELF 64. 
llvm-svn: 171693
 2013-01-07 04:51:32 +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
Michael J. Spencer 00744bf495 [YAML] Fix -Wcovered-switch-default 
llvm-svn: 171645
 2013-01-06 00:45:22 +00:00
Nick Kledzik 6b079f5e2f Removes files for separate ReaderYAML.cpp and WriterYAML.cpp 
and adds a new file ReaderWriterYAML.cpp that uses YAML I/O.

Lots of tweaks to test suite for slightly different YAML encoding.

llvm-svn: 171592
 2013-01-05 02:22:35 +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 18225e7be1 [Driver] Add -flavor core support. This will be tested by other tests using -flavor core. 
llvm-svn: 171577
 2013-01-05 00:46:45 +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 bc7f2a7359 [Driver] Add x86-64 target. 
llvm-svn: 171557
 2013-01-04 23:34:29 +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 552074f18e Style fixes. 
llvm-svn: 171531
 2013-01-04 21:18:34 +00:00
Michael J. Spencer b8c853e5eb [Passes][GOT] Fix style. 
llvm-svn: 171530
 2013-01-04 21:18:13 +00:00
Michael J. Spencer 85d998a109 [Driver] Error on undefined. 
llvm-svn: 171529
 2013-01-04 21:18:02 +00:00
Michael J. Spencer 7f693c50db Slightly better diagnostics on duplicate symbols. 
llvm-svn: 171528
 2013-01-04 21:17:51 +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
Andy Gibbs d02bf1d232 Fix build issue when building lld against libstdc++ 4.7 
llvm-svn: 170983
 2012-12-22 09:46:10 +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
Michael J. Spencer 99b99d26bb [Driver] Properly handle -entry for X86 Linux. 
llvm-svn: 169718
 2012-12-09 23:56:37 +00:00
Michael J. Spencer 3825760550 [Driver] Add -### support for printing out the core command line. 
llvm-svn: 169717
 2012-12-09 23:56:26 +00:00
Michael J. Spencer 48ed572710 Remove left over debugging output. 
llvm-svn: 169716
 2012-12-09 23:56:03 +00:00
Michael J. Spencer c8b60a70be [Driver] Make the X86Linux target use X86 (not x64) and properly initalize WriterOptions. 
llvm-svn: 169715
 2012-12-09 23:55:52 +00:00
Michael J. Spencer 9ff4be240a Add the core architecture for the lld driver. 
This includes selecting which driver to emulate, option parsing, invocation
building, and running the link. This currently only supports a very basic
subset of ld for x86_64-linux.

lld -flavor ld obj.o -o obj

or symlink lld as (ld , link, ld64, core) to get the desired behavior without
-flavor.

llvm-svn: 169659
 2012-12-08 00:47:36 +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
Shankar Easwaran 85bb045106 changes after mspencer reviews in phabricator 
llvm-svn: 167871
 2012-11-13 20:34:55 +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
Hemant Kulkarni f828613945 Add absolute symbol scope recognition in lld/Core 
llvm-svn: 167394
 2012-11-05 19:13:54 +00:00
Nick Kledzik 8cf031e4cc rename dylibNamesToOrdinal now that it is an ivar 
llvm-svn: 167254
 2012-11-01 21:44:45 +00:00
Michael J. Spencer a1913fbda9 [ELF] Fix -Woverloaded-virtual 
llvm-svn: 167246
 2012-11-01 19:46:19 +00:00
Michael J. Spencer d91bc3c8bb [MachO] Fix use after free. 
llvm-svn: 167245
 2012-11-01 19:46:06 +00:00
Michael J. Spencer c1d704550a [MachO] Fix uninitialized variables. 
llvm-svn: 167244
 2012-11-01 19:45:53 +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
Michael J. Spencer e2fb6c73f3 Fix -Wcovered-switch-default warning. 
llvm-svn: 164846
 2012-09-28 21:07:58 +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
Nick Kledzik 7243b89459 PR13467: Fix mach-o writer to handle case of zero stubs. Renumber TestingHelpers kind values 
llvm-svn: 160982
 2012-07-30 20:10:46 +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 ad58efd69a Add a default constructor/destructor for ReaderOptionsPECOFF 
llvm-svn: 160740
 2012-07-25 17:16:46 +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
Marshall Clow f33f0bbdcf Minor edits to match style guidelines. No functionality change 
llvm-svn: 160370
 2012-07-17 16:18:04 +00:00
Michael J. Spencer efcf099db5 Unused var warning. 
llvm-svn: 158944
 2012-06-21 22:41:46 +00:00
Michael J. Spencer aedfa6a36b Fix MSVC compat. MSVC doesn't have bzero. 
Although the code is not valid to begin with. It is trying to do a raw memory
copy of a non standard-layout type. nameoffset is not guaranteed to directly
follow cmdsize.

This should be properly fixed.

llvm-svn: 158612
 2012-06-17 01:18:44 +00:00
Nick Kledzik 7145cf6846 Add 'invalid' as a Reference Kind so that unknown/invalid kind strings can return that fact to the caller for use in constructing an error message, rather that triggering an assertion. 
llvm-svn: 158547
 2012-06-15 21:26:18 +00:00