8614c566e2
Handle strong undefined symbols fetching members after a weak undefined.
...
This is a case that requires --start-group --end-group with regular ELF
linkers. Fortunately it is still possible to handle it with lazy symbols without
taking a second look at archives.
Thanks to Michael Spencer for the bug report.
llvm-svn: 249406
2015-10-06 14:33:58 +00:00
6f4bd532d3
Rearrange a bit for clarity. NFC.
...
llvm-svn: 249404
2015-10-06 14:17:53 +00:00
03ab3368a0
External symbols need a full dynamic reloc, not R_X86_64_RELATIVE.
...
We were already doing the right thing if the symbol was seen in a shared
library, but not if it was completely missing.
llvm-svn: 249397
2015-10-06 12:39:58 +00:00
41127ad7af
Fix R_X86_64_RELATIVE for local symbols that refer to other sections.
...
We were mixing up the relocated and target sections.
llvm-svn: 249360
2015-10-05 22:49:16 +00:00
9c3e4d2af5
Handle a common symbol needing a R_X86_64_RELATIVE.
...
llvm-svn: 249357
2015-10-05 21:23:08 +00:00
3c83e2bbfb
Include existing addend when computing R_X86_64_RELATIVE.
...
llvm-svn: 249353
2015-10-05 21:09:37 +00:00
ae24400424
Create R_X86_64_RELATIVE when needed.
...
The dynamic relocation code needs refactoring, but it is probably better
to do it with this test passing.
llvm-svn: 249340
2015-10-05 19:30:12 +00:00
d1cf421bd5
Don't copy STT_SECTION from the inputs.
...
This matches the behavior of gold and bfd ld.
llvm-svn: 249326
2015-10-05 16:25:43 +00:00
024c84c77c
Remove an extra blank line.
...
llvm-svn: 249324
2015-10-05 16:05:18 +00:00
4f674ed138
Include hidden and internal symbols in the regular symbol table.
...
This matches the behavior of bfd ld and gold. It is also convenient for
testing other changes.
llvm-svn: 249323
2015-10-05 15:24:04 +00:00
b1f2b51a89
[ELF2] Add DT_INIT and DT_FINI dynamic table entries
...
The entries are added if there are "_init" or "_fini" entries in
the symbol table respectively. According to the behavior of ld,
entries are inserted even for undefined symbols.
Symbol names can be overridden by using -init and -fini command
line switches. If used, these switches neither add new symbol table
entries nor require those symbols to be resolved.
Differential Revision: http://reviews.llvm.org/D13385
llvm-svn: 249297
2015-10-05 10:29:46 +00:00
7757224466
Add static initialization/finalization array support.
...
This adds entries in the dynamic table for .init_array, .fini_array and
.preinit_array.
llvm-svn: 249175
2015-10-02 19:37:55 +00:00
d26da9258f
[ELF2] Fix mixed-Endian handling in DynamicSection<ELFT>::writeTo
...
Using the "raw" Elf64_Dyn or Elf32_Dyn structures in
DynamicSection<ELFT>::writeTo does not correctly handle mixed-Endian
situations. Instead, use the corresponding llvm::object::* structures which
have Endian-converting members (like the rest of the code).
This fixes all currently-failing elf2 tests when running on big-Endian
PPC64/Linux (I've added a big-Endian test case which should fail on
little-Endian machines in the same way that test/elf2/shared.s failed on
big-Endian machines prior to this change).
llvm-svn: 249150
2015-10-02 16:21:30 +00:00
8c205d5394
ELF2: Merge duplicates using lambdas. NFC.
...
llvm-svn: 249118
2015-10-02 01:33:31 +00:00
52bf0ebfdf
[lld][elf2] Sort output sections.
...
Sort by:
ALLOC
ALLOC && NOBITS
ALLOC & EXEC
ALLOC & EXEC && NOBITS
ALLOC & WRITE
ALLOC & WRITE && NOBITS
<nothing> (ignoring NOBITS)
The dynamic section is finalized early because it adds strings to the dynamic string table, which comes before the dynamic table.
llvm-svn: 249071
2015-10-01 21:15:02 +00:00
7de3f3719a
ELF2: Add -soname option.
...
llvm-svn: 249058
2015-10-01 19:36:04 +00:00
c8b158155c
Copy DT_SONAME to DT_NEEDED.
...
If a shared library has a DT_SONAME entry, that is what should be included
in the DT_NEEDED of a program using it.
We don't implement -soname yet, so check in a .so for now.
llvm-svn: 249025
2015-10-01 15:47:50 +00:00
2dfd74f758
ELF2: Add DT_REL{,A}ENT and DT_SYMENT.
...
According to the ELF specification, these dynamic array entries are mandatory.
http://reviews.llvm.org/D13303
llvm-svn: 248952
2015-09-30 21:57:53 +00:00
c55733e79c
ELF2: Advance the buffer pointers right after we use them.
...
So that it is clear that we are incrementing the pointers for sure. NFC.
llvm-svn: 248868
2015-09-30 00:54:29 +00:00
b189b5c535
Make template instantiation code a bit shorter. NFC.
...
llvm-svn: 248866
2015-09-30 00:43:22 +00:00
8ddfa812af
ELF2: Split SymbolTableSection<ELFT>::writeTo into two smaller functions.
...
Also added brief comments.
llvm-svn: 248864
2015-09-30 00:32:10 +00:00
3ef3a4c9ff
Start adding support for static programs using dynamic libraries.
...
This is just enough for a hello world using a dynamic glibc.
llvm-svn: 248854
2015-09-29 23:22:16 +00:00
6a78fd5f41
This reverts commit r248845 and r248848.
...
They broke elf2/basic-mips.s.
Revert "[elf2] Sort output sections."
Revert "[elf2] Fix build."
llvm-svn: 248851
2015-09-29 23:19:25 +00:00
a0abcfd8e7
[elf2] Fix build.
...
llvm-svn: 248848
2015-09-29 23:12:50 +00:00
fe07bd67fd
[elf2] Sort output sections.
...
Sort by:
ALLOC
ALLOC && NOBITS
ALLOC & EXEC
ALLOC & EXEC && NOBITS
ALLOC & WRITE
ALLOC & WRITE && NOBITS
<nothing> (ignoring NOBITS)
The dynamic section is finalized early because it adds strings to the dynamic string table, which comes before the dynamic table.
llvm-svn: 248845
2015-09-29 23:05:40 +00:00
2732235508
Try to fix gcc warning
...
llvm-svn: 248749
2015-09-28 22:12:54 +00:00
5f19f1224c
Delete dead code.
...
llvm-svn: 248747
2015-09-28 22:07:52 +00:00
dfc7200b18
Add support for local absolute symbols.
...
llvm-svn: 248726
2015-09-28 18:29:47 +00:00
6993ba4d3e
[ELF2] Don't inline function and define it in OutputSection.cpp. NFC.
...
Reported/Requested by: Rafael Espindola
llvm-svn: 248643
2015-09-26 00:47:56 +00:00
0e604f913a
Add support for creating the symbols __init_array_start and __init_array_end.
...
llvm-svn: 248604
2015-09-25 18:56:53 +00:00
cd076f0113
Move more logic to getSymVA to avoid code duplication.
...
llvm-svn: 248599
2015-09-25 18:19:03 +00:00
25b0acb57e
Move variables closer to use. NFC.
...
llvm-svn: 248590
2015-09-25 17:32:37 +00:00
35c6af3c9c
Move a few methods out of line. NFC.
...
llvm-svn: 248586
2015-09-25 17:19:10 +00:00
85121bbf24
[ELF2] Use static non-member function when it suffices.
...
Pointed out by Rui Ueyama.
llvm-svn: 248559
2015-09-25 03:56:11 +00:00
e1901cc33d
Simplify memory management by having ELFData contain a ELFObj.
...
llvm-svn: 248502
2015-09-24 15:11:50 +00:00
d75d3b94fd
[ELF2] Add support for -discard-none.
...
Differential Revision: http://reviews.llvm.org/D13083
llvm-svn: 248499
2015-09-24 15:08:23 +00:00
c2d211994d
Create the .bss section early so that we don't have to set it after the fact.
...
llvm-svn: 248412
2015-09-23 18:25:05 +00:00
2812aa82d0
[elf2] Pass BSSSec to the relocation handling code differently. Don't store it in the symbol.
...
llvm-svn: 248393
2015-09-23 16:57:31 +00:00
05a3dd2cba
Implement --export-dynamic.
...
llvm-svn: 248347
2015-09-22 23:38:23 +00:00
7f07442bb6
Move the last remaining hard coded relocations to Target.
...
Unfortunately the i386 and x86_64 relocation have the same numerical value
and it is a probably a bit much to add got support for another architecture
just to test this.
llvm-svn: 248326
2015-09-22 21:35:51 +00:00
01205f79a4
Start adding target abstractions.
...
This is just enough to get PLT working on 32 bit x86.
The idea behind using a virtual interface is that it should be easy to
convert any of the functions to template parameters if any turns out to be
performance critical.
llvm-svn: 248308
2015-09-22 18:19:46 +00:00
50534c2b6f
Fix the creation of Elf_Rel sections.
...
We were always incrementing the output buffer pointer by sizeof(Elf_Rela).
llvm-svn: 248303
2015-09-22 17:49:38 +00:00
454ca1c245
Use a signed value for Delta.
...
This fixes got.s on 32 bit windows.
Patch by Igor Kudrin!
llvm-svn: 248289
2015-09-22 17:08:25 +00:00
67d01489b8
[ELF2] Fix gcc build
...
Remove explicit qualification in template instantiation.
llvm-svn: 248249
2015-09-22 08:14:46 +00:00
7167585c94
Remove the Chunk terminology from ELF.
...
llvm-svn: 248229
2015-09-22 00:16:19 +00:00
56f965ff5c
More MSVC fixes.
...
llvm-svn: 248223
2015-09-21 22:48:12 +00:00
f68b707251
Trying to fix the MSVC build.
...
llvm-svn: 248219
2015-09-21 22:21:46 +00:00
327b8e19b1
Remove unused includes.
...
llvm-svn: 248218
2015-09-21 22:14:55 +00:00
4ea00210f2
Make InputSection able to relocate itself.
...
This matches the organization used in COFF.
llvm-svn: 248215
2015-09-21 22:01:00 +00:00
5805c4f509
Move OutputSectionBase and derived classes out of Writer.cpp.
...
The file was getting a bit too big and OutputSection is a central enough
concept in ELF linking to justify its own file.
llvm-svn: 248214
2015-09-21 21:38:08 +00:00
Rafael Espindola