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173 Commits

Author SHA1 Message Date
Rafael Espindola e8f08be11c Implement DTPOFF. 
llvm-svn: 117546
 2010-10-28 14:48:59 +00:00
Rafael Espindola 6f23eb380d Implement TLSLDM. 
llvm-svn: 117544
 2010-10-28 14:37:09 +00:00
Rafael Espindola b3b49bbc39 Implement VK_GOTNTPOFF and switch RelocNeedsGOT to use VariantKind. 
llvm-svn: 117543
 2010-10-28 14:22:44 +00:00
Rafael Espindola f8537165bd Add support for R_386_TLS_GD, R_386_TLS_LE_32, R_386_TLS_IE and R_386_TLS_LE. 
llvm-svn: 117494
 2010-10-27 21:23:52 +00:00
Rafael Espindola 24c8b04d5f Implement R_X86_64_GOTTPOFF, R_X86_64_TLSGD and R_X86_64_TPOFF32. 
llvm-svn: 117481
 2010-10-27 20:28:07 +00:00
Rafael Espindola 095fa9e5cc Set default type and flags for .init and .fini. 
llvm-svn: 117471
 2010-10-27 18:45:20 +00:00
Rafael Espindola 26496e6835 Produce an error for an invalid use of .symver. 
llvm-svn: 117462
 2010-10-27 17:56:18 +00:00
Rafael Espindola cc1b168ef6 Symbols defined as the difference of other two end up in the ABS section. 
llvm-svn: 117451
 2010-10-27 16:04:30 +00:00
Rafael Espindola eb0c2c170d Add support for the .symver directive. This is really ugly, but most of it is 
contained in the ELF object writer.

llvm-svn: 117448
 2010-10-27 15:18:17 +00:00
Rafael Espindola c9fb35e73b Add support for .ident. 
llvm-svn: 117389
 2010-10-26 19:35:47 +00:00
Rafael Espindola e8ae98817a Implement some relaxations for arithmetic instructions. The limitation 
on RIP relative relocations looks artificial, but this is a superset of
what we were able to do before.

llvm-svn: 117364
 2010-10-26 14:09:12 +00:00
Rafael Espindola 8ba86f801d Do not recurse into symbol refs that have a variant kind. This prevents us 
from losing the variant when producing a relocation on an alias.

llvm-svn: 117037
 2010-10-21 18:00:20 +00:00
Rafael Espindola 89f6613e76 Handle _GLOBAL_OFFSET_TABLE_ correctly. 
llvm-svn: 116932
 2010-10-20 16:46:08 +00:00
Jason W Kim e8b3711ae9 Fixing r116753 r116756 r116777 
The failures in r116753 r116756 were caused by a python issue -
Python likes to append 'L' suffix to stringified numbers if the number
is larger than a machine int. Unfortunately, this causes a divergence of
behavior between 32 and 64 bit python versions.

I re-crafted elf-dump/common_dump to take care of these issues by:

1. always printing 0x (makes for easy sed/regex)
2. always print fixed length (exactly 2 + numBits/4 digits long)
   by mod ((2^numBits) - 1)
3. left-padded with '0'

There is a residual common routine that is also used by
macho-dump (dataToHex) , so I left the 'section_data' test values alone.

llvm-svn: 116823
 2010-10-19 17:39:10 +00:00
Eric Christopher eac5e381cc Speculatively revert 116753 and 116756 to attempt to fix the bots. 
llvm-svn: 116777
 2010-10-19 00:19:49 +00:00
Jason W Kim eae048885d Changed elf-dump to output hex format by default. 
Also updated tests. 

llvm-svn: 116753
 2010-10-18 21:32:41 +00:00
Rafael Espindola fba9f74932 Implement R_386_GOT32. 
llvm-svn: 116744
 2010-10-18 20:47:21 +00:00
Rafael Espindola 0a5314fdb3 Relocate with .bss instead of using the symbol. Matches gas behavior. 
llvm-svn: 116741
 2010-10-18 20:25:33 +00:00
Rafael Espindola e3dc9e2ea1 Produce ELF::R_386_GOTPC relocations. 
llvm-svn: 116728
 2010-10-18 18:36:12 +00:00
Rafael Espindola 3521f8467d Produce a R_386_PLT32 when needed. Moved the default cases of switches to the 
start for consistency.

llvm-svn: 116715
 2010-10-18 16:58:03 +00:00
Rafael Espindola 4464e0858f Handle GOTOFF correctly on i386. 
llvm-svn: 116711
 2010-10-18 16:38:04 +00:00
Rafael Espindola 4262a22225 Add a MCObjectFormat class so that code common to all targets that use a 
single object format can be shared.

This also adds support for

mov zed+(bar-foo), %eax

on ELF and COFF targets.

llvm-svn: 116675
 2010-10-16 18:23:53 +00:00
Rafael Espindola fbcf0db7ee Refactor code a bit and avoid creating unnecessary entries in the string 
map.

llvm-svn: 116579
 2010-10-15 15:39:06 +00:00
Rafael Espindola bee6e9f8e0 Remove some code duplication. 
llvm-svn: 116484
 2010-10-14 16:34:44 +00:00
Rafael Espindola af8b4871a8 Call InitSections in llc and clang so that the binaries produced by them 
are easier to diff with those produced by llvm-mc.

llvm-svn: 116095
 2010-10-08 19:37:38 +00:00
Rafael Espindola 5f2d6a5cd9 Get binding and visibility info from the the alias, but Type from the symbol 
being aliased.

llvm-svn: 115836
 2010-10-06 21:02:29 +00:00
Rafael Espindola d444577382 If a symbol is global, reloc against it even if it is in a mergeable section. 
llvm-svn: 115817
 2010-10-06 19:27:21 +00:00
Rafael Espindola 83b2a3337f Make sure weak symbols are listed after the local ones. 
llvm-svn: 115795
 2010-10-06 16:47:31 +00:00
Rafael Espindola 8f3d2c9058 Correctly handle GOTPCREL relocations. 
llvm-svn: 115793
 2010-10-06 16:23:36 +00:00
Rafael Espindola d7565c3a06 Use a relocation against the symbol if it is a PLT and the symbol is in another 
section. Common because of linkonce sections.

llvm-svn: 115718
 2010-10-05 23:57:26 +00:00
Rafael Espindola 0ad137e98e Implement more alias cases. 
llvm-svn: 115699
 2010-10-05 22:26:43 +00:00
Rafael Espindola c58a37ea51 Don't crash in a strange .size directive. 
llvm-svn: 115684
 2010-10-05 21:02:45 +00:00
Rafael Espindola b91bac6c96 Add support for a fill value in the .zero directive. 
llvm-svn: 115655
 2010-10-05 19:42:57 +00:00
Rafael Espindola b1d0789357 Implement a simple alias case and refactor the code a bit so that the 
isInSymtab and isLocal logic in the two loops don't get easily out of sync.

llvm-svn: 115643
 2010-10-05 18:01:23 +00:00
Rafael Espindola d03e81dba8 Produce a undefined reference to _GLOBAL_OFFSET_TABLE_ when needed. 
llvm-svn: 115623
 2010-10-05 15:48:37 +00:00
Rafael Espindola 259bcdad06 Tests that now pass. 
llvm-svn: 115622
 2010-10-05 15:43:32 +00:00
Rafael Espindola fd1fff8b19 Implement ELF::R_X86_64_GOTPCREL. 
llvm-svn: 115547
 2010-10-04 19:51:39 +00:00
Rafael Espindola baadbd554a Produce a R_X86_64_PLT32 when needed. 
llvm-svn: 115541
 2010-10-04 19:04:13 +00:00
Rafael Espindola b2c4ca6433 Produce a R_X86_64_GOT32 when needed. 
llvm-svn: 115537
 2010-10-04 18:44:25 +00:00
Jan Wen Voung 87f77b5f9a Add hook in MCSection to decide when to use "optimized nops", for each 
section kind. Previously, optimized nops were only used for MachO.
Also added tests for ELF and COFF.

llvm-svn: 115523
 2010-10-04 17:32:41 +00:00
Rafael Espindola da0e3d07b2 Include the section address in the computation of the relocation. 
llvm-svn: 115509
 2010-10-04 15:59:01 +00:00
Rafael Espindola 7c48b06930 Correctly compute the relocation when it is not in the first fragment. 
llvm-svn: 115506
 2010-10-04 15:28:43 +00:00
Rafael Espindola f70b4e0c2e Implement a very basic PIC case. 
llvm-svn: 115454
 2010-10-03 00:46:57 +00:00
Chris Lattner a2f2c27b20 actually, move the elf tests into the existing elf dir. 
llvm-svn: 115416
 2010-10-02 18:53:48 +00:00
Rafael Espindola f987d5ea1c Factor some logic into ShouldRelocOnSymbol. This simplifies the code and 
fixes some cases where we were producing relocations with at symbol that
should use a section instead.

llvm-svn: 115194
 2010-09-30 20:18:35 +00:00
Jan Wen Voung efbdbe5565 Move logic of determining ELF entsize from the .s printer to initialization 
time. That way, the EntrySize field is initialized for other code paths, 
namely, the .ll -> .o code path.

llvm-svn: 115141
 2010-09-30 05:59:22 +00:00
Rafael Espindola 9d98ac645e Add another test that now passes. 
llvm-svn: 115137
 2010-09-30 04:22:07 +00:00
Rafael Espindola 70d6e0e0ff Correctly produce R_X86_64_32 or R_X86_64_32S. 
With this patch in

movq    $foo, foo(%rip)
foo:
.long   foo

We produce a R_X86_64_32S for the first relocation and R_X86_64_32 for the
second one.

llvm-svn: 115134
 2010-09-30 03:11:42 +00:00
Jan Wen Voung b96b2d8e4d Have ELFAsmParser.cpp use the already parsed "Size" (entry size) when 
constructing a section. Test for a few cases also included.

llvm-svn: 115132
 2010-09-30 02:41:46 +00:00
Rafael Espindola 2ebaee9c75 Make it possible for the MCObjectWriter to decide if a given fixup is fully 
resolved or not. Different object files have different restrictions and
different native assemblers have different idiosyncrasies we want to emulate
for now.

Move the existing MachO logic to the new place and implement an ELF one that
gets fixups to globals right.

llvm-svn: 115131
 2010-09-30 02:22:20 +00:00
Rafael Espindola 53f0bf194a Move "local commons" to the end of .bss to match the gnu as behavior. 
llvm-svn: 115037
 2010-09-29 14:52:01 +00:00
Rafael Espindola 68e05d404a Add a test that I forgot to add with a previous commit. 
llvm-svn: 115036
 2010-09-29 14:40:49 +00:00
Rafael Espindola 01d20a76fe On elf, undefined symbols can start with .L. 
llvm-svn: 114958
 2010-09-28 16:19:11 +00:00
Rafael Espindola 96bfb50c03 Write relocations in the end of the file. This matches what gas does and 
makes files easier to diff.

llvm-svn: 114898
 2010-09-27 22:04:54 +00:00
Rafael Espindola 9ca41113f6 Make sure .text doesn't produce extra alignment. 
llvm-svn: 114895
 2010-09-27 21:40:27 +00:00
Rafael Espindola 75d65b9a03 Move ELF to HasReliableSymbolDifference=true. Also take the opportunity to put 
symbols defined in merge sections in independent atoms.

llvm-svn: 114786
 2010-09-25 05:42:19 +00:00
Rafael Espindola cf1f985838 Reapply 114678 and 114667. Reverting them did not fix the bot: 
http://google1.osuosl.org:8011/builders/llvm-gcc-i386-linux-selfhost/builds/69

llvm-svn: 114761
 2010-09-24 21:19:03 +00:00
Rafael Espindola 3843bb9d2c Revert 114678 and 114667 to see if 
http://google1.osuosl.org:8011/builders/llvm-gcc-i386-linux-selfhost

gets happy.

llvm-svn: 114742
 2010-09-24 18:48:08 +00:00
Rafael Espindola f458f04eb1 Correctly handle weak undefined symbols. Before we would get a invalid binding 
(2 == STB_WEAK | STB_GLOBAL).

llvm-svn: 114690
 2010-09-23 19:55:14 +00:00
Rafael Espindola 48e108753b Represent relocations against local symbols as relocations against the section 
they are in. Both ways should be equivalent, but gas produces relocations
against the section.

Roman wrote the patch, I added the test.

llvm-svn: 114667
 2010-09-23 17:25:18 +00:00
Rafael Espindola dee12d8110 Avoid some Mach-O specific alignment being done on ELF. 
llvm-svn: 114594
 2010-09-22 22:27:05 +00:00
Rafael Espindola 9bac6cb544 Correctly align bss. 
llvm-svn: 114556
 2010-09-22 17:43:04 +00:00
Rafael Espindola f0591c1642 Implement support for .local and its "interesting" interactions with .comm. 
llvm-svn: 114382
 2010-09-21 00:24:38 +00:00
Rafael Espindola 32ab4558fe Produce a R_X86_64_32 when the value is >=0. 
llvm-svn: 114339
 2010-09-20 19:20:47 +00:00
Rafael Espindola 57e599a82a Make sure the STT_FILE symbol is the first one in the symbol table. 
llvm-svn: 114285
 2010-09-18 15:03:21 +00:00
Rafael Espindola 15829c6c4c Add test that was missing in my previous commit. 
llvm-svn: 114248
 2010-09-18 00:37:27 +00:00
Rafael Espindola 44bf266111 Print the address of sections as 0 and create the metadata sections in the 
same order as gnu as.

llvm-svn: 114109
 2010-09-16 19:46:31 +00:00
Rafael Espindola f7f433200b Make sure that names like .note.GNU-stack are accepted as valid section names. 
llvm-svn: 114091
 2010-09-16 17:05:55 +00:00
Rafael Espindola 922e3f454b Add support for the .zero directive. 
llvm-svn: 114077
 2010-09-16 15:03:59 +00:00
Rafael Espindola f667d929ce Add a InitSections method to the streamer interface. 
The ELF implementation now creates text, data and bss to match the gnu as
behavior.

The text streamer still has the old MachO specific behavior since
the testsuite checks that it will error when a directive is given
before a setting the current section for example.

A nice benefit is that -n is not required anymore when producing
ELF files.

llvm-svn: 114027
 2010-09-15 21:48:40 +00:00
Rafael Espindola 12d73d1f18 Add support for leb128 of absolute expressions. 
llvm-svn: 113691
 2010-09-11 16:45:15 +00:00
Benjamin Kramer 0a96578ac0 Add an elf-dumper utility. 
- Output format and some of the code stolen from macho-dump.
- Somewhat incomplete and probably buggy.
- Comes with a very basic test.

llvm-svn: 113488
 2010-09-09 15:00:41 +00:00
Daniel Dunbar 8e92d9b68d MC/ELF: Allow null values in virtual sections, ELF doesn't use special 
directives for putting contents in .bss, for example.

llvm-svn: 111376
 2010-08-18 18:22:37 +00:00