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1278 Commits

Author SHA1 Message Date
Simon Atanasyan 814b705984 [Mips] Use 'or' for move instead of [d]addu in PLT entries 
Patch by Simon Dardis.

Differential Revision: http://reviews.llvm.org/D12103

llvm-svn: 245491
 2015-08-19 20:20:10 +00:00
Rui Ueyama 7171c82194 COFF: Allow forward reference for weak externals 
Previously, weak external symbols could reference only symbols that
appeared before them. Although that covers almost all use cases
of weak externals, there are object files out there which contains
weak externals that have forward references.

This patch supports such weak externals.

llvm-svn: 245258
 2015-08-17 23:35:43 +00:00
Rui Ueyama 27716bb9d9 COFF: Fix a broken test. 
This test couldn't be run more than once because lib.exe does not work
if the files already exist.

llvm-svn: 245214
 2015-08-17 11:06:21 +00:00
Rui Ueyama d157088adb COFF: Fix the order of the DLL import entry. 
There are some DLLs whose initializers depends on other DLLs'
initializers. The initialization order matters for them.

MSVC linker uses the order of the libraries from the command line.
LLD used ASCII-betical order. So they were incompatible.
This patch makes LLD compatible with MSVC.

llvm-svn: 245201
 2015-08-17 08:30:31 +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
Peter Collingbourne 526ff15546 COFF: Introduce flag /opt:lldlto=N for controlling LTO optimization level. 
Differential Revision: http://reviews.llvm.org/D12024

llvm-svn: 245027
 2015-08-14 04:47:07 +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 40dfae36fc This test needs lib.exe. 
llvm-svn: 244844
 2015-08-13 00:03:47 +00:00
Denis Protivensky 0c8beb1c95 [LinkerScript] Process program header in PHDRS command 
Add PT_PHDR segment depending on its availability in linker script's
PHDRS command, fallback if no linker script is given.
Handle FILEHDR, PHDRS and FLAGS attributes of program header.

Differential Revision: http://reviews.llvm.org/D11589

llvm-svn: 244743
 2015-08-12 12:31:35 +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
Rui Ueyama fa071e13aa COFF: Align sections to 512-byte boundaries on disk. 
Sections must start at page boundaries in memory, but they
can be aligned to sector boundaries (512-bytes) on disk.
We aligned them to 4096-byte boundaries even on disk, so we
wasted disk space a bit.

llvm-svn: 244691
 2015-08-11 23:09:00 +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 904c81dc9e Add a test for our handling of shndx. 
It was already working, but missing a test.

llvm-svn: 244477
 2015-08-10 18:28:24 +00:00
Tom Stellard 01da42d8db ELF: Correctly identify SHT_NOTE sections with !SHF_ALLOC as type*Note 
Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11266

llvm-svn: 244317
 2015-08-07 14:36:04 +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
Rui Ueyama 6872455c6d COFF: Make test commands shorter. NFC. 
llvm-svn: 244227
 2015-08-06 16:47:46 +00:00
Rui Ueyama 251b0e268b COFF: Remove the old COFF linker and make link an alias to link2. 
It's time to remove old COFF linker because the new one is now complete.

llvm-svn: 244226
 2015-08-06 16:19:35 +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 4280a96468 Handle writeImportLibrary failing. 
We were printing an error but exiting with 0.

Not sure how to test this. We could add a no-winlib feature,
but that is probably not worth it.

llvm-svn: 244109
 2015-08-05 20:03:57 +00:00
Rafael Espindola ccd3adc60b lit fixes for lld. 
It was not using LLVM_LIT_TOOLS_DIR and at least on my VM never finding lib.exe.

With this all the COFF tests show up as supported and pass.

llvm-svn: 244107
 2015-08-05 19:55:17 +00:00
Rui Ueyama ba7c041f21 COFF: ARM: Implepment BLX23T relocation and fix Branch20T. 
I fed the same test to MSVC linker and got the same output,
so I believe this implementation is correct.

llvm-svn: 244102
 2015-08-05 19:40:07 +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
Simon Atanasyan 7a400d9af4 [Mips] Implement definition of the DT_MIPS_RLD_MAP_REL dynamic tag 
llvm-svn: 243835
 2015-08-01 14:53:49 +00:00
David Majnemer bf1e5c0ee9 COFF: Reenable the lld test disabled in r243758. 
llvm-svn: 243762
 2015-07-31 17:41:11 +00:00
Reid Kleckner 60dde1fbda Disable objdump disassembly test after r243755 
Right now PE image section addresses are RVAs and symbol addresses are
VAs.  We should probably fix this by changing section addresses to match
symbol addresses. Fixing this might take a few hours, so temporarily
disable the objdump part of this test.

llvm-svn: 243758
 2015-07-31 16:41:23 +00:00
Peter Collingbourne e7107ec03b COFF: When resolving _load_config_used, add it as a GC root. 
This fixes the cases where the symbol is defined in a comdat or by bitcode.

Differential Revision: http://reviews.llvm.org/D11673

llvm-svn: 243735
 2015-07-31 05:33:34 +00:00
Rui Ueyama 7ed10b84cc Remove trailing whitespace. 
llvm-svn: 243683
 2015-07-30 20:47:17 +00:00
David Majnemer 13ac40ea6e COFF: Sort output sections which start with .debug to the end of the file 
We want to convince the NT loader not to map these sections into memory.
A good first step is to move them to the end of the executable.

Differential Revision: http://reviews.llvm.org/D11655

llvm-svn: 243680
 2015-07-30 20:26:55 +00:00
Simon Atanasyan 98a857140b [Mips] Implement definition of DT_MIPS_RLD_MAP dynamic tag, .rld_map section, and __RLD_MAP symbol 
llvm-svn: 243626
 2015-07-30 07:45:55 +00:00
Michael J. Spencer 44fc1c0a73 [ELF2] Templatize addChunk and handle section flags. 
llvm-svn: 243579
 2015-07-29 22:14:50 +00:00
Rui Ueyama ff88d5a26f COFF: Add /safeseh command line option. 
If /safeseh is specified, all input files must be compatible with Safe SEH.

llvm-svn: 243565
 2015-07-29 20:25:40 +00:00