800fd3533c
Add X86::reloc_global_offset_table and use it to have a single place where
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we check for _GLOBAL_OFFSET_TABLE_.
llvm-svn: 117241
2010-10-24 17:35:42 +00:00
1851090515
Making the e_machine configurable by the target backend in ELFObjectWriter.
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llvm-svn: 117099
2010-10-22 15:52:49 +00:00
ee8d15157a
Small cleanups and fixes in preparation for fixing _GLOBAL_OFFSET_TABLE_.
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llvm-svn: 116848
2010-10-19 19:31:37 +00:00
fba9f74932
Implement R_386_GOT32.
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llvm-svn: 116744
2010-10-18 20:47:21 +00:00
0a5314fdb3
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
3604d4441a
Reenable assert.
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llvm-svn: 116738
2010-10-18 19:33:01 +00:00
e3dc9e2ea1
Produce ELF::R_386_GOTPC relocations.
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llvm-svn: 116728
2010-10-18 18:36:12 +00:00
257374bb0f
Make the bots happy.
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llvm-svn: 116719
2010-10-18 18:03:28 +00:00
3521f8467d
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
4464e0858f
Handle GOTOFF correctly on i386.
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llvm-svn: 116711
2010-10-18 16:38:04 +00:00
77414757f6
Fix a typo and silence unused variable warnings in -Asserts build.
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llvm-svn: 116685
2010-10-17 07:38:40 +00:00
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
84378f0f53
Refactor alias handling to AliasedSymbol.
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llvm-svn: 116600
2010-10-15 18:25:33 +00:00
fbcf0db7ee
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
bee6e9f8e0
Remove some code duplication.
...
llvm-svn: 116484
2010-10-14 16:34:44 +00:00
883936ce0b
Another case of 256 sections not being enough :-)
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llvm-svn: 115858
2010-10-06 22:28:19 +00:00
5f2d6a5cd9
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
d444577382
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
83b2a3337f
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
8f3d2c9058
Correctly handle GOTPCREL relocations.
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llvm-svn: 115793
2010-10-06 16:23:36 +00:00
d7565c3a06
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
0ad137e98e
Implement more alias cases.
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llvm-svn: 115699
2010-10-05 22:26:43 +00:00
3844da781f
256 sections should be enough for anyone...
...
llvm-svn: 115687
2010-10-05 21:20:07 +00:00
c58a37ea51
Don't crash in a strange .size directive.
...
llvm-svn: 115684
2010-10-05 21:02:45 +00:00
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
d03e81dba8
Produce a undefined reference to _GLOBAL_OFFSET_TABLE_ when needed.
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llvm-svn: 115623
2010-10-05 15:48:37 +00:00
bce26a1ee0
On ELF we need to know which symbols are used in relocations to decide if
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they should be in the symbol table or not. Instead of "guessing", just compute
the symbol table after the relocations are known.
llvm-svn: 115619
2010-10-05 15:11:03 +00:00
fd1fff8b19
Implement ELF::R_X86_64_GOTPCREL.
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llvm-svn: 115547
2010-10-04 19:51:39 +00:00
308363336b
Move isFixupKindX86PCRel.
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llvm-svn: 115545
2010-10-04 19:46:28 +00:00
baadbd554a
Produce a R_X86_64_PLT32 when needed.
...
llvm-svn: 115541
2010-10-04 19:04:13 +00:00
b2c4ca6433
Produce a R_X86_64_GOT32 when needed.
...
llvm-svn: 115537
2010-10-04 18:44:25 +00:00
da0e3d07b2
Include the section address in the computation of the relocation.
...
llvm-svn: 115509
2010-10-04 15:59:01 +00:00
7c48b06930
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
f70b4e0c2e
Implement a very basic PIC case.
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llvm-svn: 115454
2010-10-03 00:46:57 +00:00
f987d5ea1c
Factor some logic into ShouldRelocOnSymbol. This simplifies the code and
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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
70d6e0e0ff
Correctly produce R_X86_64_32 or R_X86_64_32S.
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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
2ebaee9c75
Make it possible for the MCObjectWriter to decide if a given fixup is fully
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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
01d20a76fe
On elf, undefined symbols can start with .L.
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llvm-svn: 114958
2010-09-28 16:19:11 +00:00
96bfb50c03
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
9735f4ff8d
Factor symbol value computation into a function.
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llvm-svn: 114891
2010-09-27 21:23:02 +00:00
75d65b9a03
Move ELF to HasReliableSymbolDifference=true. Also take the opportunity to put
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symbols defined in merge sections in independent atoms.
llvm-svn: 114786
2010-09-25 05:42:19 +00:00
cf1f985838
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
3843bb9d2c
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
f458f04eb1
Correctly handle weak undefined symbols. Before we would get a invalid binding
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(2 == STB_WEAK | STB_GLOBAL).
llvm-svn: 114690
2010-09-23 19:55:14 +00:00
6366d1b858
Correctly compute the offset of the symbol. Forgot these bits from the
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last commit.
llvm-svn: 114678
2010-09-23 18:01:31 +00:00
48e108753b
Represent relocations against local symbols as relocations against the section
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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
2816588eb9
Fix the FIXME.
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llvm-svn: 114639
2010-09-23 14:14:56 +00:00
0e527b7ed5
Fix typo and add a FIXME.
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llvm-svn: 114570
2010-09-22 19:04:41 +00:00
461a692c7f
Revert unrelated change that was accidentally included in the previous commit.
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llvm-svn: 114383
2010-09-21 00:40:19 +00:00
f0591c1642
Implement support for .local and its "interesting" interactions with .comm.
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llvm-svn: 114382
2010-09-21 00:24:38 +00:00
32ab4558fe
Produce a R_X86_64_32 when the value is >=0.
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llvm-svn: 114339
2010-09-20 19:20:47 +00:00
57e599a82a
Make sure the STT_FILE symbol is the first one in the symbol table.
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llvm-svn: 114285
2010-09-18 15:03:21 +00:00
0ecde03e9f
Avoid relocations in a common case.
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llvm-svn: 114229
2010-09-17 22:34:41 +00:00
44bf266111
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
6c3c349b2b
MCELF: Write relocation fragments in the right endian.
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- This code is gross, but does the job for now.
llvm-svn: 113509
2010-09-09 18:01:29 +00:00
3b727f55aa
Make ELF OS ABI dependent on the OS from target triple.
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llvm-svn: 113508
2010-09-09 17:57:50 +00:00
2ef1a589c5
ELF_STB_Local is 0 so setting and checking it must be done specially
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llvm-svn: 113375
2010-09-08 18:08:40 +00:00
6c27de28b5
Unresolved weak symbols have value equal zero.
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llvm-svn: 113358
2010-09-08 14:29:45 +00:00
3723ba1fe0
MCELF: Align symtab, relocation sections and section headers properly. Patch by Krister Wombell.
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llvm-svn: 113155
2010-09-06 16:11:52 +00:00
4226198a1d
Allow creation of SHT_NULL sections, from Roman Divacky.
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llvm-svn: 112605
2010-08-31 17:03:33 +00:00
b1b493bcab
MCELF: The value of all common symbols is the offset from the start of the section. Patch by Roman Divacky.
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llvm-svn: 112492
2010-08-30 17:20:17 +00:00
8199447851
The value is offset from the start of the section for non-common symbols, submitted by Jordan Gordeev.
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llvm-svn: 112473
2010-08-30 12:00:16 +00:00
f791b9fc56
Index external symbols by symbol table instead of parent section, by Roman Divacky.
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llvm-svn: 112472
2010-08-30 11:59:29 +00:00
95bb297c26
squish dead code.
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llvm-svn: 112350
2010-08-28 03:21:03 +00:00
05e22982c8
MCELF: Always overwrite FixedValue.
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llvm-svn: 112259
2010-08-27 10:38:39 +00:00
2c45f431fa
MCELF: Fix a thinko of mine.
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llvm-svn: 112203
2010-08-26 18:12:04 +00:00
929cc7618f
MCELF: Compensate for the addend on i386. Patch by Roman Divacky, with some cleanups.
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llvm-svn: 112197
2010-08-26 17:23:02 +00:00
37b384cd66
MCELF: Use precomputed symbol indices, patch by Roman Divacky.
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llvm-svn: 112079
2010-08-25 20:09:43 +00:00
a536f077fe
Relocate against parent if the symbol is not in section or it's a common symbol, from Roman Divacky.
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llvm-svn: 111925
2010-08-24 17:34:39 +00:00
d41b53c037
Fix thinko. Having no tests is great ...
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llvm-svn: 111848
2010-08-23 21:32:00 +00:00
c4809c930a
Reduce code duplication.
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llvm-svn: 111846
2010-08-23 21:23:52 +00:00
86511dce18
ELFObjectWriter: Run ComputeSymbolTable before recording relocations. This way we can use the information it has computed and don't have to recompute the same stuff over and over again.
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llvm-svn: 111844
2010-08-23 21:19:37 +00:00
40f83489b4
Add the symbol offset to the relocation value when we relocate against section. By Roman Divacky.
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llvm-svn: 111824
2010-08-23 19:05:46 +00:00
620b68e883
Use the proper relocation section + cleanup, from Roman Divacky.
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llvm-svn: 111819
2010-08-23 18:24:20 +00:00
448886d5df
MCELF: Count the section orders properly. Patch by Roman Divacky.
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llvm-svn: 111517
2010-08-19 13:44:49 +00:00
da7604f53d
Remove dead code. Fixes a GCC warning.
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llvm-svn: 111271
2010-08-17 19:45:05 +00:00
1afba421a9
Sketch i386 relocations handling, from Roman Divacky.
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Hello world builds & runs now on i386/ELF with -integrated-as.
llvm-svn: 111264
2010-08-17 18:20:28 +00:00
fd0541566b
Use the correct entry size for relocation entries, from Roman Divacky.
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llvm-svn: 111259
2010-08-17 17:56:13 +00:00
1fe76565d0
Differentiate between RELA and REL relocations, from Roman Divacky.
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llvm-svn: 111252
2010-08-17 17:30:07 +00:00
896bd7e932
One baby step towards i386 ELF, from Roman Divacky.
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llvm-svn: 111247
2010-08-17 17:02:29 +00:00
b962ca0ce5
Try to silence a overeager GCC warning.
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llvm-svn: 111214
2010-08-17 00:33:24 +00:00
5f237942f5
A round of minor cleanups for ELFObjectWriter.
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llvm-svn: 111213
2010-08-17 00:00:46 +00:00
be6cca2b7d
Silence warnings and simplify code. Eliminate a 32/64 bit portability issue.
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llvm-svn: 111201
2010-08-16 23:00:12 +00:00
1fe0d53aec
Fixes for generation of ELF relocations. Patch by Roman Divacky.
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llvm-svn: 111183
2010-08-16 21:17:09 +00:00
b20b5249d2
Fix a few warnings in and detabify MCELFStreamer and ELFObjectWriter.
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llvm-svn: 111175
2010-08-16 19:15:06 +00:00
6c1ad4835e
Add ELF ObjectWriter and Streamer support.
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I forgot to add these files in commit 111172.
llvm-svn: 111174
2010-08-16 18:57:57 +00:00
Rafael Espindola