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176 Commits

Author SHA1 Message Date
Benjamin Kramer
24f1206c7d Fix a typo and silence unused variable warnings in -Asserts build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116685 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-17 07:38:40 +00:00
Rafael Espindola
f230df9af4 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116675 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-16 18:23:53 +00:00
Rafael Espindola
de89b010b0 Refactor alias handling to AliasedSymbol. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116600 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-15 18:25:33 +00:00
Rafael Espindola
5df0b65e8f Refactor code a bit and avoid creating unnecessary entries in the string 
map.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116579 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-15 15:39:06 +00:00
Rafael Espindola
a0949b50dc Remove some code duplication. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116484 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-14 16:34:44 +00:00
Rafael Espindola
d8e0bfe07a Another case of 256 sections not being enough :-) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115858 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-06 22:28:19 +00:00
Rafael Espindola
152c1061e0 Get binding and visibility info from the the alias, but Type from the symbol 
being aliased.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115836 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-06 21:02:29 +00:00
Rafael Espindola
153666c038 If a symbol is global, reloc against it even if it is in a mergeable section. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115817 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-06 19:27:21 +00:00
Rafael Espindola
3223f19ff0 Make sure weak symbols are listed after the local ones. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115795 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-06 16:47:31 +00:00
Rafael Espindola
8cecf253e4 Correctly handle GOTPCREL relocations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115793 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-06 16:23:36 +00:00
Rafael Espindola
3729d0052b Use a relocation against the symbol if it is a PLT and the symbol is in another 
section. Common because of linkonce sections.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115718 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-05 23:57:26 +00:00
Rafael Espindola
01f9ea35a7 Implement more alias cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115699 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-05 22:26:43 +00:00
Rafael Espindola
f5c347dfc2 256 sections should be enough for anyone... 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115687 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-05 21:20:07 +00:00
Rafael Espindola
62fed8bd38 Don't crash in a strange .size directive. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115684 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-05 21:02:45 +00:00
Rafael Espindola
737cd213e3 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115643 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-05 18:01:23 +00:00
Rafael Espindola
5c77c16f31 Produce a undefined reference to _GLOBAL_OFFSET_TABLE_ when needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115623 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-05 15:48:37 +00:00
Rafael Espindola
8f413fa9c0 On ELF we need to know which symbols are used in relocations to decide if 
they should be in the symbol table or not. Instead of "guessing", just compute
the symbol table after the relocations are known.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115619 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-05 15:11:03 +00:00
Rafael Espindola
607d1f6d32 Implement ELF::R_X86_64_GOTPCREL. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115547 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-04 19:51:39 +00:00
Rafael Espindola
cebdc01d66 Move isFixupKindX86PCRel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115545 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-04 19:46:28 +00:00
Rafael Espindola
92bf6684f6 Produce a R_X86_64_PLT32 when needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115541 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-04 19:04:13 +00:00
Rafael Espindola
28f9ac8101 Produce a R_X86_64_GOT32 when needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115537 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-04 18:44:25 +00:00
Rafael Espindola
55fb102130 Include the section address in the computation of the relocation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115509 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-04 15:59:01 +00:00
Rafael Espindola
01263d35d4 Correctly compute the relocation when it is not in the first fragment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115506 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-04 15:28:43 +00:00
Rafael Espindola
9d8b7555cd Implement a very basic PIC case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115454 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-03 00:46:57 +00:00
Rafael Espindola
7eae36b38b 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115194 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-30 20:18:35 +00:00
Rafael Espindola
a8c02c3bdd 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115134 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-30 03:11:42 +00:00
Rafael Espindola
7070387f08 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115131 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-30 02:22:20 +00:00
Rafael Espindola
53725bc57a On elf, undefined symbols can start with .L. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114958 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-28 16:19:11 +00:00
Rafael Espindola
c3c413f631 Write relocations in the end of the file. This matches what gas does and 
makes files easier to diff.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114898 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-27 22:04:54 +00:00
Rafael Espindola
2c6ec31df6 Factor symbol value computation into a function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114891 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-27 21:23:02 +00:00
Rafael Espindola
73ffea47d2 Move ELF to HasReliableSymbolDifference=true. Also take the opportunity to put 
symbols defined in merge sections in independent atoms.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114786 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-25 05:42:19 +00:00
Rafael Espindola
a648918eb7 Reapply 114678 and 114667. Reverting them did not fix the bot: 
http://google1.osuosl.org:8011/builders/llvm-gcc-i386-linux-selfhost/builds/69

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114761 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-24 21:19:03 +00:00
Rafael Espindola
cd4b20a25b Revert 114678 and 114667 to see if 
http://google1.osuosl.org:8011/builders/llvm-gcc-i386-linux-selfhost

gets happy.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114742 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-24 18:48:08 +00:00
Rafael Espindola
e15eb4e14c Correctly handle weak undefined symbols. Before we would get a invalid binding 
(2 == STB_WEAK | STB_GLOBAL).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114690 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-23 19:55:14 +00:00
Rafael Espindola
a5c6b78bf8 Correctly compute the offset of the symbol. Forgot these bits from the 
last commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114678 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-23 18:01:31 +00:00
Rafael Espindola
b142bef30b 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114667 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-23 17:25:18 +00:00
Rafael Espindola
51efe7a253 Fix the FIXME. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114639 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-23 14:14:56 +00:00
Rafael Espindola
38738bf1a8 Fix typo and add a FIXME. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114570 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-22 19:04:41 +00:00
Rafael Espindola
aa359bddbf Revert unrelated change that was accidentally included in the previous commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114383 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-21 00:40:19 +00:00
Rafael Espindola
f7c10a3cff Implement support for .local and its "interesting" interactions with .comm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114382 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-21 00:24:38 +00:00
Rafael Espindola
43779dcfef Produce a R_X86_64_32 when the value is >=0. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114339 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-20 19:20:47 +00:00
Rafael Espindola
ad49cf5866 Make sure the STT_FILE symbol is the first one in the symbol table. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114285 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-18 15:03:21 +00:00
Rafael Espindola
0007489312 Avoid relocations in a common case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114229 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-17 22:34:41 +00:00
Rafael Espindola
71859c640f Print the address of sections as 0 and create the metadata sections in the 
same order as gnu as.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114109 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-16 19:46:31 +00:00
Benjamin Kramer
5e492e8d42 MCELF: Write relocation fragments in the right endian. 
- This code is gross, but does the job for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113509 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-09 18:01:29 +00:00
Roman Divacky
5baf79edc0 Make ELF OS ABI dependent on the OS from target triple. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113508 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-09 17:57:50 +00:00
Roman Divacky
b629dcca72 ELF_STB_Local is 0 so setting and checking it must be done specially 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113375 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-08 18:08:40 +00:00
Roman Divacky
563b38a89a Unresolved weak symbols have value equal zero. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113358 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-08 14:29:45 +00:00
Benjamin Kramer
a9eadca2fd MCELF: Align symtab, relocation sections and section headers properly. Patch by Krister Wombell. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113155 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-06 16:11:52 +00:00
Benjamin Kramer
19dc7faf25 Allow creation of SHT_NULL sections, from Roman Divacky. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112605 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-31 17:03:33 +00:00
Benjamin Kramer
6cc53be24c MCELF: The value of all common symbols is the offset from the start of the section. Patch by Roman Divacky. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112492 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-30 17:20:17 +00:00
Benjamin Kramer
51799ddc7c The value is offset from the start of the section for non-common symbols, submitted by Jordan Gordeev. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112473 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-30 12:00:16 +00:00
Benjamin Kramer
679d236117 Index external symbols by symbol table instead of parent section, by Roman Divacky. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112472 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-30 11:59:29 +00:00
Chris Lattner
b188a3789e squish dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112350 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-28 03:21:03 +00:00
Benjamin Kramer
95c602ade3 MCELF: Always overwrite FixedValue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112259 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-27 10:38:39 +00:00
Benjamin Kramer
4ba1b3074b MCELF: Fix a thinko of mine. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112203 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-26 18:12:04 +00:00
Benjamin Kramer
63d37b9322 MCELF: Compensate for the addend on i386. Patch by Roman Divacky, with some cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112197 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-26 17:23:02 +00:00
Benjamin Kramer
7b83c26051 MCELF: Use precomputed symbol indices, patch by Roman Divacky. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112079 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-25 20:09:43 +00:00
Benjamin Kramer
2f6e0e68a4 Relocate against parent if the symbol is not in section or it's a common symbol, from Roman Divacky. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111925 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-24 17:34:39 +00:00
Benjamin Kramer
c522f6e70b Fix thinko. Having no tests is great ... 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111848 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-23 21:32:00 +00:00
Benjamin Kramer
36c6dc22bc Reduce code duplication. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111846 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-23 21:23:52 +00:00
Benjamin Kramer
0b6cbfe04c 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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111844 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-23 21:19:37 +00:00
Benjamin Kramer
bcf2db60dd Add the symbol offset to the relocation value when we relocate against section. By Roman Divacky. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111824 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-23 19:05:46 +00:00
Benjamin Kramer
30dc1ee78a Use the proper relocation section + cleanup, from Roman Divacky. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111819 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-23 18:24:20 +00:00
Benjamin Kramer
44cbde85ba MCELF: Count the section orders properly. Patch by Roman Divacky. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111517 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-19 13:44:49 +00:00
Benjamin Kramer
81cfb8529b Remove dead code. Fixes a GCC warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111271 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-17 19:45:05 +00:00
Benjamin Kramer
e5b57347e9 Sketch i386 relocations handling, from Roman Divacky. 
Hello world builds & runs now on i386/ELF with -integrated-as.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111264 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-17 18:20:28 +00:00
Benjamin Kramer
299fbe3a5a Use the correct entry size for relocation entries, from Roman Divacky. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111259 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-17 17:56:13 +00:00
Benjamin Kramer
377a572d9b Differentiate between RELA and REL relocations, from Roman Divacky. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111252 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-17 17:30:07 +00:00
Benjamin Kramer
eb97677764 One baby step towards i386 ELF, from Roman Divacky. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111247 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-17 17:02:29 +00:00
Benjamin Kramer
172d7d6a12 Try to silence a overeager GCC warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111214 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-17 00:33:24 +00:00
Benjamin Kramer
368ae7e4ec A round of minor cleanups for ELFObjectWriter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111213 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-17 00:00:46 +00:00
Benjamin Kramer
1f8aa7bf08 Silence warnings and simplify code. Eliminate a 32/64 bit portability issue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111201 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 23:00:12 +00:00
Eli Friedman
a44fa2473a Fixes for generation of ELF relocations. Patch by Roman Divacky. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111183 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 21:17:09 +00:00
Eli Friedman
f8020a3978 Fix a few warnings in and detabify MCELFStreamer and ELFObjectWriter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111175 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 19:15:06 +00:00
Matt Fleming
3565a06ebf Add ELF ObjectWriter and Streamer support. 
I forgot to add these files in commit 111172.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111174 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 18:57:57 +00:00