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640 Commits

Author SHA1 Message Date
Rafael Espindola e1901cc33d Simplify memory management by having ELFData contain a ELFObj. 
llvm-svn: 248502
 2015-09-24 15:11:50 +00:00
Rafael Espindola 503fe9408d Expose ELFFileBase::getEMachine. NFC. 
I will use it in a followup patch.

llvm-svn: 248287
 2015-09-22 16:53:55 +00:00
Rafael Espindola 7167585c94 Remove the Chunk terminology from ELF. 
llvm-svn: 248229
 2015-09-22 00:16:19 +00:00
Rafael Espindola 9d06ab6ded Rename Chunks.(h|cpp) to InputSection.(h|cpp). NFC. 
llvm-svn: 248226
 2015-09-22 00:01:39 +00:00
Rafael Espindola 53d5cea648 Rename SectionChunk to InputSection. 
This is more consistent with OutputSection. This is also part of removing
the "Chunk" term from the ELF linker, since we just have input/output sections
and program headers.

llvm-svn: 248183
 2015-09-21 17:47:00 +00:00
Davide Italiano 6d328d3841 [ELF2] Initial support for local symbols. 
Symbol table is now populated correctly, but some fields are missing,
they'll be added in the future. This patch also adds --discard-all
flag, which was the default behavior until now.

Differential Revision:   http://reviews.llvm.org/D12874

llvm-svn: 247849
 2015-09-16 20:45:57 +00:00
Michael J. Spencer 88f0d63bea [lld][elf2] Fix style. 
llvm-svn: 247064
 2015-09-08 20:36:20 +00:00
Rafael Espindola 18173d420e Start adding support for symbols in shared libraries. 
llvm-svn: 247019
 2015-09-08 15:50:05 +00:00
Michael J. Spencer 1b348a68e5 [elf2] Add basic archive file support. 
llvm-svn: 246886
 2015-09-04 22:28:10 +00:00
Rafael Espindola 55eed7efcd Avoid gcc warning. 
llvm-svn: 246811
 2015-09-03 22:25:11 +00:00
Davide Italiano 34812ba258 [ELF2] Don't allocate more SymbolBodies than needed. 
Differential Revision:	http://reviews.llvm.org/D12605

llvm-svn: 246802
 2015-09-03 20:25:54 +00:00
Rafael Espindola f98d6d84cd Start adding support for shared libraries. 
This just adds the types and enough support to detect incompatibilities among
shared libraries and object files.

llvm-svn: 246797
 2015-09-03 20:03:54 +00:00
Rafael Espindola 905ad3442d Split out the ELF kind from the InputFile Kind. 
There were at least two issues with having them together:
* For compatibility checks, we only want to look at the ELF kind.
* Adding support for shared libraries should introduce one InputFile kind,
  not 4.

llvm-svn: 246707
 2015-09-02 20:43:43 +00:00
Rafael Espindola 51d4690b6e Start adding support for common symbols. 
For now this just recognizes the special section number.

llvm-svn: 246332
 2015-08-28 21:26:51 +00:00
Rafael Espindola 3a63f3fb22 Add support for weak absolute symbols. 
On ELF being weak is independent of what we call the kind of the symbol. So
this also makes the code simpler.

llvm-svn: 246326
 2015-08-28 20:19:34 +00:00
Michael J. Spencer 67bc8d6b3f [elf2] Add basic relocation support for x86-64. 
This currently doesn't handle local symbols.

Differential Revision: http://reviews.llvm.org/D11612

llvm-svn: 246234
 2015-08-27 23:15:56 +00:00
Rafael Espindola 0e0c1901c9 Start adding support for absolute symbols. 
llvm-svn: 246147
 2015-08-27 12:40:06 +00:00
Rafael Espindola 5cd113df01 Diagnose symbols with invalid section indexes. 
llvm-svn: 245884
 2015-08-24 22:00:25 +00:00
Rafael Espindola 2034822981 Add support for reading files with more than 0xff00 sections. 
llvm-svn: 245880
 2015-08-24 21:43:25 +00:00
Rafael Espindola 832b93f219 Start recording the section of symbols in the symbol table. 
Support for more than 64 K sections to follow shortly.

llvm-svn: 245868
 2015-08-24 20:06:32 +00:00
Rafael Espindola 1bd885aba4 ELF: Also record the type of undefined symbols. 
Tested with a weak undefined. Testing with a plain undefined will have to wait
for support for -shared.

llvm-svn: 245069
 2015-08-14 16:46:28 +00:00
Rafael Espindola c44d17ad45 Add the type of the symbols to the symbol table. 
For now only defined symbols are covered. I will add undefined ones in the
next patch.

llvm-svn: 245057
 2015-08-14 15:10:49 +00:00
Rafael Espindola cde251370a Include non-alloca sections in the link. 
llvm-svn: 244895
 2015-08-13 14:45:44 +00:00
Reid Kleckner f7b85e0ce2 Fix mismatched sign comparison 
llvm-svn: 244653
 2015-08-11 20:06:51 +00:00
Rafael Espindola 76e24ea955 Add support for weak undefined symbols. 
llvm-svn: 244640
 2015-08-11 17:57:05 +00:00
Rafael Espindola 791e9f9c59 Remove unused templating. 
llvm-svn: 244639
 2015-08-11 17:51:57 +00:00
Rafael Espindola b13df6582a Add support for weak symbols. 
llvm-svn: 244636
 2015-08-11 17:33:02 +00:00
Rafael Espindola 7c388187c9 Don't report a conflict between two local symbols. 
llvm-svn: 244624
 2015-08-11 16:30:34 +00:00
Rafael Espindola d8340dae0c Don't depend on getDotSymtabSec. It is going away. 
llvm-svn: 244451
 2015-08-10 15:12:17 +00:00
Rafael Espindola 1a9344fa26 Use already available symbol tables. NFC. 
llvm-svn: 244336
 2015-08-07 17:16:28 +00:00
Rafael Espindola df1e05a26c Delete broken code. 
This was using a hard coded string table and getting it for every symbol.

The symbol name was already available.

llvm-svn: 244220
 2015-08-06 15:33:21 +00:00
Rafael Espindola 192e1fa59d Move the error handling functions to Error.h. NFC. 
llvm-svn: 244216
 2015-08-06 15:08:23 +00:00
Rafael Espindola 3c9cb4b3d3 lld elf2: Diagnose trying to mix incompatible files. 
This is also a step in instantiating the writer with the correct template
argument.

llvm-svn: 244035
 2015-08-05 12:03:34 +00:00
Rafael Espindola 30318518a5 This function never returns null, don't check it. 
llvm-svn: 243982
 2015-08-04 14:00:56 +00:00
Michael J. Spencer cdae0a4e2d [ELF2] Devirtualize SymbolBody. 
llvm-svn: 243496
 2015-07-28 22:58:25 +00:00
Michael J. Spencer 84487f1174 [ELF2] Add a new ELF linker based on the new PE/COFF linker. 
Differential Revision: http://reviews.llvm.org/D11188

llvm-svn: 243161
 2015-07-24 21:03:07 +00:00
Michael J. Spencer bae540e945 Revert ELF port. Posting to mailing list. 
llvm-svn: 242118
 2015-07-14 04:49:48 +00:00
Michael J. Spencer 50ed5308d1 Fix warnings. 
llvm-svn: 242098
 2015-07-14 01:02:37 +00:00
Michael J. Spencer f754b1fe12 Put explicit template instantiations in the correct namespace. 
llvm-svn: 242093
 2015-07-14 00:22:00 +00:00
Michael J. Spencer 8a4145411f Initial ELF port. 
This is a direct port of the new PE/COFF linker to ELF.

It can take a single object file and generate a valid executable that executes at the first byte in the text section.

llvm-svn: 242088
 2015-07-13 23:48:06 +00:00