Rafael Espindola
2f114f8430
Write the line info to .debug_line.
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llvm-svn: 117930
2010-11-01 17:07:14 +00:00
Rafael Espindola
7a38cb0144
Implement .weakref.
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llvm-svn: 117911
2010-11-01 14:28:48 +00:00
Rafael Espindola
0d9ac34ffa
Be more strict on when we produce an undefined reference. In gas a file with
...
just
.type foo,@object
will produce an undefined reference to foo. On the other hand, a file with
just
.weakref bar, foo
will not. It is somewhat hard to support both in MC since both statements
should create the symbols. It should be possible if we really need to by
adding to the flags, but hopefully that is not necessary.
With this patch we do not produce a undefined reference in any of those cases.
The assembly file needs an actual use for the undefined reference to be
present.
This is in preparation for a patch implementing .weakref.
llvm-svn: 117735
2010-10-29 23:09:31 +00:00
Rafael Espindola
913ce7ebc8
Improvements to .section parsing:
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* If we have a M or a G, reject sections without the type
* Only parse the flag specific arguments if we have M or G
* Parse the corresponding arguments for M and G
We ignore the G arguments and flag for now.
llvm-svn: 117608
2010-10-28 21:33:33 +00:00
Rafael Espindola
f230319275
Defined weak symbols should have non-zero value.
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llvm-svn: 117585
2010-10-28 19:39:57 +00:00
Rafael Espindola
862d688cbd
Fix relocations with renamed symbols.
...
llvm-svn: 117575
2010-10-28 19:08:03 +00:00
Rafael Espindola
e62cf892ae
Aliases defined with .symver should copy the binding of the symbols they alias.
...
Move the existing patching for undefined symbols so that all the patching
is done in the same function.
llvm-svn: 117570
2010-10-28 18:33:03 +00:00
Rafael Espindola
ff7e4e4e43
Implement R_X86_64_DTPOFF32.
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llvm-svn: 117548
2010-10-28 15:11:03 +00:00
Rafael Espindola
1d1ff5485c
Implement TLSLD.
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llvm-svn: 117547
2010-10-28 15:02:40 +00:00
Rafael Espindola
8372247e83
Implement DTPOFF.
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llvm-svn: 117546
2010-10-28 14:48:59 +00:00
Rafael Espindola
c44c5b374a
Implement TLSLDM.
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llvm-svn: 117544
2010-10-28 14:37:09 +00:00
Rafael Espindola
d8ef67f8b9
Implement VK_GOTNTPOFF and switch RelocNeedsGOT to use VariantKind.
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llvm-svn: 117543
2010-10-28 14:22:44 +00:00
Rafael Espindola
68ec803155
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
2ea1239070
Implement R_X86_64_GOTTPOFF, R_X86_64_TLSGD and R_X86_64_TPOFF32.
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llvm-svn: 117481
2010-10-27 20:28:07 +00:00
Rafael Espindola
4db628cd34
Set default type and flags for .init and .fini.
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llvm-svn: 117471
2010-10-27 18:45:20 +00:00
Rafael Espindola
ca302c994a
Produce an error for an invalid use of .symver.
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llvm-svn: 117462
2010-10-27 17:56:18 +00:00
Rafael Espindola
58a0ea80a4
Symbols defined as the difference of other two end up in the ABS section.
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llvm-svn: 117451
2010-10-27 16:04:30 +00:00
Rafael Espindola
23d05a8675
Add support for the .symver directive. This is really ugly, but most of it is
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contained in the ELF object writer.
llvm-svn: 117448
2010-10-27 15:18:17 +00:00
Rafael Espindola
50d3c29c30
Add support for .ident.
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llvm-svn: 117389
2010-10-26 19:35:47 +00:00
Rafael Espindola
e38790534e
Implement some relaxations for arithmetic instructions. The limitation
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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
69c973fbfd
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
0a50bbaee1
Handle _GLOBAL_OFFSET_TABLE_ correctly.
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llvm-svn: 116932
2010-10-20 16:46:08 +00:00
Jason W Kim
ccbc75257a
Fixing r116753 r116756 r116777
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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
a039d14f9b
Speculatively revert 116753 and 116756 to attempt to fix the bots.
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llvm-svn: 116777
2010-10-19 00:19:49 +00:00
Jason W Kim
a60bcd8bb1
Changed elf-dump to output hex format by default.
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Also updated tests.
llvm-svn: 116753
2010-10-18 21:32:41 +00:00
Rafael Espindola
9a98116bb7
Implement R_386_GOT32.
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llvm-svn: 116744
2010-10-18 20:47:21 +00:00
Rafael Espindola
c75defe576
Relocate with .bss instead of using the symbol. Matches gas behavior.
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llvm-svn: 116741
2010-10-18 20:25:33 +00:00
Rafael Espindola
7cc236c87f
Produce ELF::R_386_GOTPC relocations.
...
llvm-svn: 116728
2010-10-18 18:36:12 +00:00
Rafael Espindola
bf9107e924
Produce a R_386_PLT32 when needed. Moved the default cases of switches to the
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start for consistency.
llvm-svn: 116715
2010-10-18 16:58:03 +00:00
Rafael Espindola
4a7459403a
Handle GOTOFF correctly on i386.
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llvm-svn: 116711
2010-10-18 16:38:04 +00:00
Rafael Espindola
be5c52d2dc
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
9b114d966a
Refactor code a bit and avoid creating unnecessary entries in the string
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map.
llvm-svn: 116579
2010-10-15 15:39:06 +00:00
Rafael Espindola
2cdc3d6235
Remove some code duplication.
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llvm-svn: 116484
2010-10-14 16:34:44 +00:00
Rafael Espindola
bfd3c31acf
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
ed469a30f0
Get binding and visibility info from the the alias, but Type from the symbol
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being aliased.
llvm-svn: 115836
2010-10-06 21:02:29 +00:00
Rafael Espindola
6283a4a478
If a symbol is global, reloc against it even if it is in a mergeable section.
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llvm-svn: 115817
2010-10-06 19:27:21 +00:00
Rafael Espindola
d085e53b36
Make sure weak symbols are listed after the local ones.
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llvm-svn: 115795
2010-10-06 16:47:31 +00:00
Rafael Espindola
0c327e6e77
Correctly handle GOTPCREL relocations.
...
llvm-svn: 115793
2010-10-06 16:23:36 +00:00
Rafael Espindola
8c7f9745de
Use a relocation against the symbol if it is a PLT and the symbol is in another
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section. Common because of linkonce sections.
llvm-svn: 115718
2010-10-05 23:57:26 +00:00
Rafael Espindola
e2bc98a2b2
Implement more alias cases.
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llvm-svn: 115699
2010-10-05 22:26:43 +00:00
Rafael Espindola
5762077d52
Don't crash in a strange .size directive.
...
llvm-svn: 115684
2010-10-05 21:02:45 +00:00
Rafael Espindola
0b536fb0fb
Add support for a fill value in the .zero directive.
...
llvm-svn: 115655
2010-10-05 19:42:57 +00:00
Rafael Espindola
f850cfbc16
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
e829a55e8e
Produce a undefined reference to _GLOBAL_OFFSET_TABLE_ when needed.
...
llvm-svn: 115623
2010-10-05 15:48:37 +00:00
Rafael Espindola
9cd97ce8ed
Tests that now pass.
...
llvm-svn: 115622
2010-10-05 15:43:32 +00:00
Rafael Espindola
dcac047c7f
Implement ELF::R_X86_64_GOTPCREL.
...
llvm-svn: 115547
2010-10-04 19:51:39 +00:00
Rafael Espindola
f7e642c0da
Produce a R_X86_64_PLT32 when needed.
...
llvm-svn: 115541
2010-10-04 19:04:13 +00:00
Rafael Espindola
08361a0329
Produce a R_X86_64_GOT32 when needed.
...
llvm-svn: 115537
2010-10-04 18:44:25 +00:00
Jan Wen Voung
9c76bbf90a
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
491c3f9ef7
Include the section address in the computation of the relocation.
...
llvm-svn: 115509
2010-10-04 15:59:01 +00:00
Rafael Espindola
ce6ea76503
Correctly compute the relocation when it is not in the first fragment.
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llvm-svn: 115506
2010-10-04 15:28:43 +00:00
Rafael Espindola
e209fd8ab7
Implement a very basic PIC case.
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llvm-svn: 115454
2010-10-03 00:46:57 +00:00
Chris Lattner
0f389ed003
actually, move the elf tests into the existing elf dir.
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llvm-svn: 115416
2010-10-02 18:53:48 +00:00
Rafael Espindola
5aae0d6863
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
7df9bf0092
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
b371d39f74
Add another test that now passes.
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llvm-svn: 115137
2010-09-30 04:22:07 +00:00
Rafael Espindola
480ee577ad
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
0d25ddb1de
Have ELFAsmParser.cpp use the already parsed "Size" (entry size) when
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constructing a section. Test for a few cases also included.
llvm-svn: 115132
2010-09-30 02:41:46 +00:00
Rafael Espindola
3e2630deca
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
96509a5550
Move "local commons" to the end of .bss to match the gnu as behavior.
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llvm-svn: 115037
2010-09-29 14:52:01 +00:00
Rafael Espindola
1b3d55417c
Add a test that I forgot to add with a previous commit.
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llvm-svn: 115036
2010-09-29 14:40:49 +00:00
Rafael Espindola
c604f87ba4
On elf, undefined symbols can start with .L.
...
llvm-svn: 114958
2010-09-28 16:19:11 +00:00
Rafael Espindola
c4d0ee0b96
Write relocations in the end of the file. This matches what gas does and
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makes files easier to diff.
llvm-svn: 114898
2010-09-27 22:04:54 +00:00
Rafael Espindola
442f81681e
Make sure .text doesn't produce extra alignment.
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llvm-svn: 114895
2010-09-27 21:40:27 +00:00
Rafael Espindola
e4c0edf697
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
b70ab59ca8
Reapply 114678 and 114667. Reverting them did not fix the bot:
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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
909ffec6eb
Revert 114678 and 114667 to see if
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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
4b0d25a0db
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
ce04ba0f70
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
3cfff6e0c5
Avoid some Mach-O specific alignment being done on ELF.
...
llvm-svn: 114594
2010-09-22 22:27:05 +00:00
Rafael Espindola
a2d73f0a38
Correctly align bss.
...
llvm-svn: 114556
2010-09-22 17:43:04 +00:00
Rafael Espindola
02af3cdd58
Implement support for .local and its "interesting" interactions with .comm.
...
llvm-svn: 114382
2010-09-21 00:24:38 +00:00
Rafael Espindola
78fc1f7f66
Produce a R_X86_64_32 when the value is >=0.
...
llvm-svn: 114339
2010-09-20 19:20:47 +00:00
Rafael Espindola
9c3a9bf8aa
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
32e423fe2b
Add test that was missing in my previous commit.
...
llvm-svn: 114248
2010-09-18 00:37:27 +00:00
Rafael Espindola
d542892fc0
Print the address of sections as 0 and create the metadata sections in the
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same order as gnu as.
llvm-svn: 114109
2010-09-16 19:46:31 +00:00
Rafael Espindola
fa964e153e
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
58aa9e8010
Add support for the .zero directive.
...
llvm-svn: 114077
2010-09-16 15:03:59 +00:00
Rafael Espindola
8a987c002e
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
ce9b27497e
Add support for leb128 of absolute expressions.
...
llvm-svn: 113691
2010-09-11 16:45:15 +00:00
Benjamin Kramer
8849104392
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
9ced206b3a
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