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43 Commits

Author SHA1 Message Date
Davide Italiano
94f183a696 [ELFv2] Implement R_X86_64_32 relocation. 
Differential Revision:	http://reviews.llvm.org/D12436

llvm-svn: 246362
 2015-08-29 13:15:42 +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
Rafael Espindola
ad5ca2245e Remove irrelevant parts of the test. 
llvm-svn: 246265
 2015-08-28 02:53:05 +00:00
Rafael Espindola
871765c321 Make sure we output symbols in the same order on 32 and 64 bit builds. 
llvm-svn: 246264
 2015-08-28 02:46:41 +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
e11c6d2d6f Set the symbol size in the symbol table. 
llvm-svn: 246086
 2015-08-26 21:46:24 +00:00
Rafael Espindola
f3837074cc Set the symbol value in the symbol table. 
llvm-svn: 245943
 2015-08-25 15:53:17 +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
383c323d4d ELF: Set the correct symbol binding. 
llvm-svn: 245049
 2015-08-14 13:52:36 +00:00
Rafael Espindola
62b81b875a Start populating the symbol table. 
With this patch only the name is set. I will set the other fields shortly.

For now the table doesn't include local symbols. This is equivalent to using
--discard-all with gnu ld. This is OK for now since the symbols are not
needed for execution and for testing symbol resolution we only need the
global symbols.

llvm-svn: 245044
 2015-08-14 13:07:05 +00:00
Rafael Espindola
f763ca3c9c ELF: Create a symbol table. 
For now it is empty. I will add the symbols in a followup patch.

llvm-svn: 245008
 2015-08-14 02:42:20 +00:00
Rafael Espindola
2db634d8f1 Correctly align output sections. 
They don't need to be aligned to page boundaries. Only segments need that.

llvm-svn: 244942
 2015-08-13 20:24:18 +00:00
Rafael Espindola
0160a281c2 Record the alignment of the output sections. 
llvm-svn: 244941
 2015-08-13 20:13:39 +00:00
Rafael Espindola
64e888ba5f Set the file offset of zero sized sections. 
There is no reason not to do it and this matches what gold and bfd ld do.

llvm-svn: 244929
 2015-08-13 18:23:43 +00:00
Rafael Espindola
a7471795ae Take name, type and flags in consideration when concatenating sections. 
This is mandated by the ELF spec.

llvm-svn: 244911
 2015-08-13 17:04:50 +00:00
Rafael Espindola
ef1ac01c2e Don't give an address to sections that are not allocated. 
llvm-svn: 244900
 2015-08-13 15:31:17 +00:00
Rafael Espindola
abad6186c3 Place SHF_ALLOC sections first in the output. 
Having them in the middle of the file complicates the creation of segments.

llvm-svn: 244898
 2015-08-13 15:23:46 +00:00
Rafael Espindola
cde251370a Include non-alloca sections in the link. 
llvm-svn: 244895
 2015-08-13 14:45:44 +00:00
Rafael Espindola
91009b3856 Fix the alignment of the section headers. 
Thanks a lot to Rui for noticing it.

llvm-svn: 244711
 2015-08-12 01:45:28 +00:00
Rafael Espindola
6b83b90b6a ELF: Create a string table. 
For now only the sections are in it, but it already makes the output easier
to read and test.

llvm-svn: 244702
 2015-08-12 00:00:24 +00:00
Rafael Espindola
76e24ea955 Add support for weak undefined symbols. 
llvm-svn: 244640
 2015-08-11 17:57:05 +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
525d0bf0b9 On freebsd it is possible to open a directory. Test with another error. 
llvm-svn: 244249
 2015-08-06 19:12:03 +00:00
Rafael Espindola
08c1df6a45 Bring test back but don't check the filesytem dependent error. 
llvm-svn: 244218
 2015-08-06 15:18:59 +00:00
Rafael Espindola
3b8018069e For completeness, add a 64 bit big endian test. 
llvm-svn: 244183
 2015-08-06 00:00:50 +00:00
Rafael Espindola
1c2f64d1a6 Add a big endian testcase. 
llvm-svn: 244173
 2015-08-05 23:40:20 +00:00
Rafael Espindola
4b7c2fc64e Add bare minimum to get a working i386 linux program. 
llvm-svn: 244050
 2015-08-05 15:08:40 +00:00
Rafael Espindola
d39c8cd087 Rename asm tests to .s. NFC. 
llvm-svn: 244037
 2015-08-05 12:14:51 +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
87ee8dcb64 Use ELFOSABI_NONE. This matches both bfd ld and gold. 
llvm-svn: 244033
 2015-08-05 11:55:52 +00:00
Rafael Espindola
aefd5c1617 Create ObjectFile with the correct endian and word size. 
The writer is still hard coded to 64 bits le, but with this we can test for
invalid ELF files.

llvm-svn: 243993
 2015-08-04 15:45:54 +00:00
Michael J. Spencer
44fc1c0a73 [ELF2] Templatize addChunk and handle section flags. 
llvm-svn: 243579
 2015-07-29 22:14:50 +00:00
Michael J. Spencer
5a6f5f178e [ELF2] Emit correct section types. 
llvm-svn: 243509
 2015-07-29 00:52:17 +00:00
Michael J. Spencer
8039dae26d [ELF2] Emit section table. 
llvm-svn: 243506
 2015-07-29 00:30:10 +00:00
Michael J. Spencer
c34eed3045 [ELF2] Remove broken test. 
The exact error the system returns for this case is varies between OS's and file systems.

llvm-svn: 243184
 2015-07-25 00:09:22 +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