Commit Graph

173 Commits

Author SHA1 Message Date
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 f7892a1f3a [ELF2] Constify member functions.
llvm-svn: 248019
2015-09-18 18:28:08 +00:00
Rafael Espindola 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
Davide Italiano b5b47b432b [ELF2] Fill up local symbols fields correctly.
Differential Revision:	http://reviews.llvm.org/D12944

llvm-svn: 247960
2015-09-18 01:08:17 +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
Rafael Espindola 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
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 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 8788e1a630 Make getSymbols non-virtual. NFC.
llvm-svn: 246731
2015-09-02 23:01:37 +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 f2f41a9f97 Fix the gcc build:
InputFiles.h:98:53: error: invalid use of incomplete type ‘class lld::elf2::SymbolBody’
     return SymbolBodies[SymbolIndex - FirstNonLocal]->getReplacement();

llvm-svn: 246262
2015-08-28 02:40:04 +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 2034822981 Add support for reading files with more than 0xff00 sections.
llvm-svn: 245880
2015-08-24 21:43:25 +00:00
Rafael Espindola beee25e484 Make these headers as being c++.
llvm-svn: 245050
2015-08-14 14:12:54 +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 e7a00e326a For now we only have on Chunk type. Simplify.
The others we have in sight are
* common symbols.
* entries in SHF_MERGE sections.

They will have a substantially different treatment. It is not clear if it is
worth it putting them all in a single list just to dispatch based on the kind on
the other side.

I hope to implement common symbols soon, and then we will be in a position
to have a concrete discussion. For now this is simpler for the the implemented
features.

llvm-svn: 244042
2015-08-05 13:55:34 +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
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 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