658dccd1c8
[elf2] Relocate against common symbols.
...
llvm-svn: 248054
2015-09-18 22:13:25 +00:00
5c2310c30c
Start adding support for creating the GOT.
...
With this a program can call into a shared library with
jmp *foo@GOTPCREL(%rip)
llvm-svn: 247992
2015-09-18 14:40:19 +00:00
19e3889dba
Start creating dynamic relocations.
...
For now we don't create got/plt and only Elf_Rela is supported.
llvm-svn: 247811
2015-09-16 15:54:15 +00:00
37ecff14f4
Remove redundant "protected:".
...
llvm-svn: 247797
2015-09-16 13:47:45 +00:00
18173d420e
Start adding support for symbols in shared libraries.
...
llvm-svn: 247019
2015-09-08 15:50:05 +00:00
1b348a68e5
[elf2] Add basic archive file support.
...
llvm-svn: 246886
2015-09-04 22:28:10 +00:00
78471f0ec1
Merge visibility from all symbols with the same name.
...
The ELF spec says:
... if any reference to or definition of a name is a symbol with a
non-default visibility attribute, the visibility attribute must be
propagated to the resolving symbol in the linked object. If different
visibility attributes are specified for distinct references to or
definitions of a symbol, the most constraining visibility attribute
must be propagated to the resolving symbol in the linked object. The
attributes, ordered from least to most constraining, are:
STV_PROTECTED, STV_HIDDEN and STV_INTERNAL.
llvm-svn: 246603
2015-09-01 23:12:52 +00:00
f31f9617ca
Remember the maximum alignment used to refer to a common symbol.
...
llvm-svn: 246517
2015-09-01 01:19:12 +00:00
ce8c9c0548
Set the correct value for the common symbols.
...
In the relocatable object it is the alignment, but in the linked file it is
a regular address.
llvm-svn: 246505
2015-08-31 22:55:21 +00:00
f7d45f0869
Delete SyntheticUndefined.
...
Now that resolved is templated anyway, we can use the regular Undefined.
llvm-svn: 246407
2015-08-31 01:46:20 +00:00
daa92a6193
Keep the largest common symbol.
...
This requires templating some functions over ELFT, but that opens other cleanup
opportunities for future patches.
llvm-svn: 246405
2015-08-31 01:16:19 +00:00
30e1797b38
Turn resolution.s into an exhaustive testcase.
...
Now that we print a symbol table and all symbol kinds are at least declared,
we can test all combinations that don't produce an error.
This also includes a few fixes to keep the test passing:
* Keep the strong symbol in a weak X strong pair
* Handle common symbols.
The common X common case will be finished in a followup patch.
llvm-svn: 246401
2015-08-30 23:17:30 +00:00
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
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
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
0e0c1901c9
Start adding support for absolute symbols.
...
llvm-svn: 246147
2015-08-27 12:40:06 +00:00
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
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
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
457c940835
Delete dead code.
...
llvm-svn: 245056
2015-08-14 14:58:57 +00:00
3bf356ee9c
Remove unused default values.
...
llvm-svn: 245053
2015-08-14 14:38:44 +00:00
beee25e484
Make these headers as being c++.
...
llvm-svn: 245050
2015-08-14 14:12:54 +00:00
4f89fdad9f
ELF2: Make Defined{Regular,Weak} ctors look the same as other SymbolBody ctors.
...
llvm-svn: 244701
2015-08-11 23:37:25 +00:00
76e24ea955
Add support for weak undefined symbols.
...
llvm-svn: 244640
2015-08-11 17:57:05 +00:00
791e9f9c59
Remove unused templating.
...
llvm-svn: 244639
2015-08-11 17:51:57 +00:00
b13df6582a
Add support for weak symbols.
...
llvm-svn: 244636
2015-08-11 17:33:02 +00:00
ae1b23bd61
Use real values for DefindeFirst and DefinedLast.
...
With this clang notices that switches are fully covered.
llvm-svn: 244632
2015-08-11 17:10:02 +00:00
9247f165ff
Delete unused typedef.
...
llvm-svn: 244628
2015-08-11 16:55:28 +00:00
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
e3335d8a66
Delete dead code.
...
llvm-svn: 244040
2015-08-05 13:26:54 +00:00
cdae0a4e2d
[ELF2] Devirtualize SymbolBody.
...
llvm-svn: 243496
2015-07-28 22:58:25 +00:00
fdbbcdad87
ELF2: Inline very small functions.
...
llvm-svn: 243323
2015-07-27 20:39:04 +00:00
a7ccb2926f
ELF2: Devirtualize SymbolBody::compare. NFC.
...
This is to make it consistent with COFF.
llvm-svn: 243321
2015-07-27 20:39:01 +00:00
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
bae540e945
Revert ELF port. Posting to mailing list.
...
llvm-svn: 242118
2015-07-14 04:49:48 +00:00
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
Michael J. Spencer