Commit Graph

24 Commits

Author SHA1 Message Date
Michael J. Spencer ac5f048e09 [lld][elf2] Address review comments.
llvm-svn: 247096
2015-09-08 22:51:46 +00:00
Michael J. Spencer 546c64c733 [lld][elf2] Fix hard coded entry address.
llvm-svn: 247089
2015-09-08 22:34:57 +00:00
Rafael Espindola 18173d420e Start adding support for symbols in shared libraries.
llvm-svn: 247019
2015-09-08 15:50:05 +00:00
Rafael Espindola 4f624b9581 Simplify reporting of undefined symbols.
llvm-svn: 247016
2015-09-08 14:32:29 +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 824d1a975f Add a template helper to avoid multiple switches over the ELF kind. NFC.
llvm-svn: 246823
2015-09-04 00:09:43 +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 8aeb13fec1 Add a helper function for getting the first object file.
Also preparation for shared objects. It will become the first ELF file.

llvm-svn: 246796
2015-09-03 19:13:13 +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 ee1364f7f6 Don't leave unused strings in the string table.
llvm-svn: 246593
2015-09-01 21:47:21 +00:00
Rafael Espindola 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
Rafael Espindola 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
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 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 192e1fa59d Move the error handling functions to Error.h. NFC.
llvm-svn: 244216
2015-08-06 15:08:23 +00:00
Rafael Espindola e3335d8a66 Delete dead code.
llvm-svn: 244040
2015-08-05 13:26:54 +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 2ffdd4d0e5 The SymbolTable doesn't need to be a template.
It was already using just code that is common to all object files.

llvm-svn: 243985
2015-08-04 14:29:01 +00:00
Rafael Espindola 602592a048 Remove a silly return.
llvm-svn: 243983
2015-08-04 14:08:11 +00:00
Rafael Espindola b89951457d Remove SymbolTable::getChunks.
When we were using a std::sort over all the chunks we needed to put them in a
single storage.

Now that we just iterate over them and use a map to find the output section,
we can avoid allocating the temporary storage.

llvm-svn: 243980
2015-08-04 13:39:30 +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 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