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229 Commits

Author SHA1 Message Date
Rafael Espindola
38a400df3b Move PPC bits to lib/Target/PowerPC. 
llvm-svn: 147124
 2011-12-22 01:57:09 +00:00
Akira Hatanaka
e2eed9649e Local dynamic TLS model for direct object output. Create the correct TLS MIPS 
ELF relocations.

Patch by Jack Carter.

llvm-svn: 147118
 2011-12-22 01:05:17 +00:00
Rafael Espindola
a0124055b1 Move the ARM specific parts of the ELF writer to Target/ARM. 
llvm-svn: 147115
 2011-12-22 00:37:50 +00:00
Rafael Espindola
6faa1533fb getEFlags is const. 
llvm-svn: 147114
 2011-12-22 00:21:50 +00:00
Rafael Espindola
f61ff34252 Switch from WriteEFlags to getEFlags in preparation for moving it 
to Target/.

llvm-svn: 147087
 2011-12-21 20:09:46 +00:00
Rafael Espindola
b264d33854 Move the X86 specific bits of the ELF writer to the Target/X86 directory. 
Other targets will follow shortly.

llvm-svn: 147060
 2011-12-21 17:30:17 +00:00
Rafael Espindola
1ad4095d6b Reduce the exposure of Triple::OSType in the ELF object writer. This will 
avoid including ADT/Triple.h in many places when the target specific bits are
moved.

llvm-svn: 147059
 2011-12-21 17:00:36 +00:00
Rafael Espindola
9e252bf038 Small refactoring so that RelocNeedsGOT can stay in the target independent 
side when the target specific bits are moved to the Target directory.

llvm-svn: 147053
 2011-12-21 14:26:29 +00:00
Akira Hatanaka
e41963ce47 Relocation against a symbol, instead of against section. We had some extreme 
test cases where there were a lot of relocations applied relative to a large
rodata section. Gas would create a symbol for each of these whereas we would
be relative to the beginning of the rodata section. This change mimics what
gas does.

Patch by Jack Carter.

llvm-svn: 146468
 2011-12-13 02:27:40 +00:00
Rafael Espindola
7e0a793183 Handle reloc_signed_4byte in here. Not doing so was a regression from my 
previous commit. It is strange that we see it in 32 bits. We already
have a fixme about it.

llvm-svn: 146273
 2011-12-09 19:57:29 +00:00
Rafael Espindola
0a7f336475 Handle the case of the magical _GLOBAL_OFFSET_TABLE_ showing up in a 
symbol difference. This matches gas behavior and fixes PR11513.

We still don't handle _GLOBAL_OFFSET_TABLE_ in data sections.

llvm-svn: 146238
 2011-12-09 03:03:58 +00:00
Bruno Cardoso Lopes
61e6d987bf Add a few moreLocal/Global R_MIPS_GOT related fixups and 
make the addend fixup code a bit more generic

Patch by Jack Carter.

llvm-svn: 145998
 2011-12-07 00:28:57 +00:00
Bruno Cardoso Lopes
87cfffe149 Explicit symbols for gnu mimicing relocations. Patch by Jack Carter 
llvm-svn: 145911
 2011-12-06 03:34:42 +00:00
Jim Grosbach
46be301c4c Tidy up. Hard tabs. 
llvm-svn: 145878
 2011-12-06 00:13:09 +00:00
Jim Grosbach
18e2fe47fa Switch MCAssembler to method names starting w/ lower-case. 
per http://llvm.org/docs/CodingStandards.html#ll_naming

llvm-svn: 145873
 2011-12-06 00:03:48 +00:00
Akira Hatanaka
f5ddf13f79 This patch addresses gp relative fixups/relocations for jump tables. 
llvm-svn: 145112
 2011-11-23 22:18:04 +00:00
Jim Grosbach
0dde349df1 Tidy up. 80 columns. 
llvm-svn: 144649
 2011-11-15 16:46:22 +00:00
Bruno Cardoso Lopes
c9473e9809 Add mips ELF relocation types. Patch by Jack Carter! 
llvm-svn: 143738
 2011-11-04 22:24:36 +00:00
Nick Lewycky
29e7b315ac Also create a shndx even if there are no symbols. This lets us test 
.symtab_shndx reading and writing together, and finally we have a testcase for
r141440.

llvm-svn: 141641
 2011-10-11 03:54:50 +00:00
Nick Lewycky
133a16871f Don't emit the symbol table entry for the .symtab_shndx section either. 
llvm-svn: 141440
 2011-10-07 23:29:53 +00:00
Nick Lewycky
c6ac5f7388 Remove extraneous curlies. No functionality change. 
llvm-svn: 141439
 2011-10-07 23:28:32 +00:00
Nick Lewycky
8b02d36a23 Don't emit a shstrtabindex in the reserved range. Spotted by inspection and 
patch by Cary Coutant!

llvm-svn: 141413
 2011-10-07 20:58:24 +00:00
Nick Lewycky
4eb1143038 Clarify/fix typo. No functionality change. 
llvm-svn: 141412
 2011-10-07 20:56:23 +00:00
Akira Hatanaka
e67a10d54d Add definition of MipsELFObjectWriter. 
Patch by Reed Kotler at Mips Technologies.

llvm-svn: 140891
 2011-09-30 21:55:40 +00:00
Roman Divacky
dfbecd1eb7 Introduce adjustFixupOffset that adjusts the fixup offset of a relocation. 
This is meant to be overriden by backends. Implement an override on PowerPC
which adjusts the offset by 2 for ha16/lo16 relocation kinds. This removes
a commented out hack and enables hello world to be compiled on PowerPC.

llvm-svn: 136905
 2011-08-04 19:08:19 +00:00
Rafael Espindola
d7facaf371 Add an assert to check that the Addend fits the file format. 
llvm-svn: 136868
 2011-08-04 13:05:26 +00:00
Jason W Kim
e4df09f7ba Fix http://llvm.org/bugs/show_bug.cgi?id=10568 
Move the reloc size assert into AsmBackend - where it is more apropos.

llvm-svn: 136855
 2011-08-04 00:38:45 +00:00
Roman Divacky
11a044634a Comment out the PPC relocation offset adjustment. It must be done differently. 
This unbreaks some tests.

llvm-svn: 136692
 2011-08-02 16:15:32 +00:00
Roman Divacky
038c1a1a73 Sketch out PowerPC ELF writer. This is enough to get clang -integrated-as 
to compile a working hello world on FreeBSD/PPC32.

llvm-svn: 136689
 2011-08-02 15:51:38 +00:00
Evan Cheng
5928e69d20 Rename TargetAsmBackend to MCAsmBackend; rename createAsmBackend to createMCAsmBackend. 
llvm-svn: 136010
 2011-07-25 23:24:55 +00:00
Evan Cheng
7e763d86ba Refactor X86 target to separate MC code from Target code. 
llvm-svn: 135930
 2011-07-25 18:43:53 +00:00
Evan Cheng
f2596bc62a Move TargetAsmParser.h TargetAsmBackend.h and TargetAsmLexer.h to MC where they belong. 
llvm-svn: 135833
 2011-07-23 00:45:41 +00:00
Evan Cheng
ad5f485957 Sink ARM mc routines into MCTargetDesc. 
llvm-svn: 135825
 2011-07-23 00:00:19 +00:00
Jason W Kim
7fbe7914af Remove an uneeded switch - Turns out reloc results are identical w/o the switch. (face+palm) 
llvm-svn: 132790
 2011-06-09 19:13:45 +00:00
Rafael Espindola
940a0ee5ca Produce an undefined reference to _GLOBAL_OFFSET_TABLE_ if we have a 
VK_GOTOFF reloc. This matches as' behavior, but it is not clear why the linker
might need this, so I added a FIXME.

I could test this by duplicating test/MC/ELF/got.s, but it doesn't look
worthwhile.

llvm-svn: 132655
 2011-06-05 01:20:06 +00:00
Nick Lewycky
34fa1684e7 Add support for @GOTPTOFF in i386 mode. 
llvm-svn: 132643
 2011-06-04 17:38:07 +00:00
Rafael Espindola
1866808384 fixes target address tBL and tBLX and sets relocation type 
of tBL/tBLX to R_ARM_THM_CALL (ARM ELF 4.7.1.6)

Patch by koan-sin tan.

llvm-svn: 131748
 2011-05-20 20:01:01 +00:00
Jason W Kim
94c31fdd31 Add a FIXME reminder to remove ForceARMElfPIC switch. 
llvm-svn: 131411
 2011-05-16 16:35:21 +00:00
Rafael Espindola
e90c1cb221 sets bit 0 of the function address of thumb function in .symtab 
("T is 1 if the target symbol S has type STT_FUNC and the
symbol addresses a Thumb instruction ;it is 0 otherwise."
from "ELF for the ARM Architecture" 4.7.1.2)

Patch by Koan-Sin Tan!

llvm-svn: 131406
 2011-05-16 16:17:21 +00:00
Matt Beaumont-Gay
7c6c90b35d Remove an unused variable and move a couple others inside DEBUG. 
llvm-svn: 131208
 2011-05-11 23:34:51 +00:00
Jason W Kim
c09e726455 Address the last bit of relocation flag related divergence betweeen 
LLVM and binutils.

With this patch, there are no functional differences between the .o
produced directly from LLVM versus the .s to .o via GNU as, for relocation tags
at least, for both PIC and non-PIC modes.

Because some non-PIC reloc tags are used (legally) on PIC, so IsPCRel flag is
necessary but not sufficient to determine whether the overall codegen mode is
PIC or not. Why is this necessary? There is an incompatibility of how relocs
are emitted in the .rodata section.  Binutils PIC likes to emit certain relocs
as section relative offsets.  Non-PIC does not do this.

So I added a hidden switch on the ELFObjectwriter "-arm-elf-force-pic" which
forces the objectwriter to pretend that all relocs are for PIC mode.


Todo: Activate ForceARMElfPIC to true if -relocation-model=pic is selected
on llc.

Todo: There are probably more issues for PIC mode on ARM/MC/ELF...

Todo: Existing tests in MC/ARM/elf-reloc*.ll need to be converted over to .s 
tests as well as expanded to cover the gamut.

llvm-svn: 131205
 2011-05-11 22:53:06 +00:00
Rafael Espindola
fd05785324 Simplify the handling of pcrel relocations on ELF. Now we do the right thing 
for all symbol differences and can drop the old EmitPCRelSymbolValue
method.

This also make getExprForFDESymbol on ELF equal to the one on MachO, and it
can be made non-virtual.

llvm-svn: 130634
 2011-05-01 03:50:49 +00:00
Rafael Espindola
b80875edee Micro optimization and improved similarity with gas' output: 
When two section names share a suffix, reuse the entry in shstrtab.

llvm-svn: 129115
 2011-04-07 23:21:52 +00:00
Rafael Espindola
1557fd6d39 Write the section table and the section data in the same order that 
gun as does. This makes it a lot easier to compare the output of both
as the addresses are now a lot closer.

llvm-svn: 127972
 2011-03-20 18:44:20 +00:00
Jan Sjödin
771911e28b Split MCEELFStreamer and ELFObjectWriter into .h and .cpp files, so that other components can use them. 
llvm-svn: 126942
 2011-03-03 14:52:12 +00:00
Eli Friedman
d92d17bf67 PR9352: Always emit a relocation for weak symbols. Not emitting relocations 
for calls to weak symbols with a definition has the appearance of working
with LLVM-generated code because weak symbol definitions are put in their
own sections.

llvm-svn: 126933
 2011-03-03 07:24:36 +00:00
Jan Sjödin
30a52dec93 Make all static functions become static class methods. Move shared (duplicated) functions to new MCELF class. 
llvm-svn: 126686
 2011-02-28 21:45:04 +00:00
Rafael Espindola
9e18e96264 Put in the symbol table symbols only used in a .globl statement. 
Fixes PR9292.

llvm-svn: 126330
 2011-02-23 20:22:07 +00:00
Joerg Sonnenberger
37d5484d18 Handle FK_PCRel_1 and add a test case for this and FK_PCRel_4. 
llvm-svn: 126157
 2011-02-21 23:25:41 +00:00
Rafael Espindola
490d02a334 Gas is very inconsistent about when a relaxation/relocation is needed. Do 
the right thing and stop trying to copy it. Fixes PR8944.

llvm-svn: 125648
 2011-02-16 03:25:55 +00:00