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* Relocation against a symbol, instead of against section. We had some extremeAkira Hatanaka2011-12-131-2/+2
| | | | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146468 91177308-0d34-0410-b5e6-96231b3b80d8
* Handle reloc_signed_4byte in here. Not doing so was a regression from myRafael Espindola2011-12-091-0/+1
| | | | | | | previous commit. It is strange that we see it in 32 bits. We already have a fixme about it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146273 91177308-0d34-0410-b5e6-96231b3b80d8
* Handle the case of the magical _GLOBAL_OFFSET_TABLE_ showing up in aRafael Espindola2011-12-091-7/+18
| | | | | | | | symbol difference. This matches gas behavior and fixes PR11513. We still don't handle _GLOBAL_OFFSET_TABLE_ in data sections. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146238 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a few moreLocal/Global R_MIPS_GOT related fixups andBruno Cardoso Lopes2011-12-071-1/+2
| | | | | | | | make the addend fixup code a bit more generic Patch by Jack Carter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145998 91177308-0d34-0410-b5e6-96231b3b80d8
* Explicit symbols for gnu mimicing relocations. Patch by Jack CarterBruno Cardoso Lopes2011-12-061-0/+14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145911 91177308-0d34-0410-b5e6-96231b3b80d8
* Tidy up. Hard tabs.Jim Grosbach2011-12-061-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145878 91177308-0d34-0410-b5e6-96231b3b80d8
* Switch MCAssembler to method names starting w/ lower-case.Jim Grosbach2011-12-061-1/+1
| | | | | | per http://llvm.org/docs/CodingStandards.html#ll_naming git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145873 91177308-0d34-0410-b5e6-96231b3b80d8
* This patch addresses gp relative fixups/relocations for jump tables.Akira Hatanaka2011-11-231-0/+9
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145112 91177308-0d34-0410-b5e6-96231b3b80d8
* Tidy up. 80 columns.Jim Grosbach2011-11-151-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144649 91177308-0d34-0410-b5e6-96231b3b80d8
* Add mips ELF relocation types. Patch by Jack Carter!Bruno Cardoso Lopes2011-11-041-6/+55
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143738 91177308-0d34-0410-b5e6-96231b3b80d8
* Also create a shndx even if there are no symbols. This lets us testNick Lewycky2011-10-111-0/+3
| | | | | | | | .symtab_shndx reading and writing together, and finally we have a testcase for r141440. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141641 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't emit the symbol table entry for the .symtab_shndx section either.Nick Lewycky2011-10-071-1/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141440 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove extraneous curlies. No functionality change.Nick Lewycky2011-10-071-2/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141439 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't emit a shstrtabindex in the reserved range. Spotted by inspection andNick Lewycky2011-10-071-1/+1
| | | | | | | patch by Cary Coutant! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141413 91177308-0d34-0410-b5e6-96231b3b80d8
* Clarify/fix typo. No functionality change.Nick Lewycky2011-10-071-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141412 91177308-0d34-0410-b5e6-96231b3b80d8
* Add definition of MipsELFObjectWriter.Akira Hatanaka2011-09-301-0/+18
| | | | | | | | | Patch by Reed Kotler at Mips Technologies. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140891 91177308-0d34-0410-b5e6-96231b3b80d8
* Introduce adjustFixupOffset that adjusts the fixup offset of a relocation.Roman Divacky2011-08-041-12/+14
| | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136905 91177308-0d34-0410-b5e6-96231b3b80d8
* Add an assert to check that the Addend fits the file format.Rafael Espindola2011-08-041-0/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136868 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix http://llvm.org/bugs/show_bug.cgi?id=10568Jason W Kim2011-08-041-1/+0
| | | | | | Move the reloc size assert into AsmBackend - where it is more apropos. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136855 91177308-0d34-0410-b5e6-96231b3b80d8
* Comment out the PPC relocation offset adjustment. It must be done differently.Roman Divacky2011-08-021-0/+4
| | | | | | | This unbreaks some tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136692 91177308-0d34-0410-b5e6-96231b3b80d8
* Sketch out PowerPC ELF writer. This is enough to get clang -integrated-asRoman Divacky2011-08-021-0/+70
| | | | | | | | to compile a working hello world on FreeBSD/PPC32. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136689 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename TargetAsmBackend to MCAsmBackend; rename createAsmBackend to ↵Evan Cheng2011-07-251-1/+1
| | | | | | createMCAsmBackend. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136010 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor X86 target to separate MC code from Target code.Evan Cheng2011-07-251-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135930 91177308-0d34-0410-b5e6-96231b3b80d8
* Move TargetAsmParser.h TargetAsmBackend.h and TargetAsmLexer.h to MC where ↵Evan Cheng2011-07-231-2/+2
| | | | | | they belong. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135833 91177308-0d34-0410-b5e6-96231b3b80d8
* Sink ARM mc routines into MCTargetDesc.Evan Cheng2011-07-231-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135825 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove an uneeded switch - Turns out reloc results are identical w/o the ↵Jason W Kim2011-06-091-12/+1
| | | | | | switch. (face+palm) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132790 91177308-0d34-0410-b5e6-96231b3b80d8
* Produce an undefined reference to _GLOBAL_OFFSET_TABLE_ if we have aRafael Espindola2011-06-051-0/+2
| | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132655 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support for @GOTPTOFF in i386 mode.Nick Lewycky2011-06-041-0/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132643 91177308-0d34-0410-b5e6-96231b3b80d8
* fixes target address tBL and tBLX and sets relocation typeRafael Espindola2011-05-201-0/+11
| | | | | | | | of tBL/tBLX to R_ARM_THM_CALL (ARM ELF 4.7.1.6) Patch by koan-sin tan. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131748 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a FIXME reminder to remove ForceARMElfPIC switch.Jason W Kim2011-05-161-0/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131411 91177308-0d34-0410-b5e6-96231b3b80d8
* sets bit 0 of the function address of thumb function in .symtabRafael Espindola2011-05-161-2/+7
| | | | | | | | | | ("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! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131406 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove an unused variable and move a couple others inside DEBUG.Matt Beaumont-Gay2011-05-111-6/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131208 91177308-0d34-0410-b5e6-96231b3b80d8
* Address the last bit of relocation flag related divergence betweeenJason W Kim2011-05-111-20/+107
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131205 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify the handling of pcrel relocations on ELF. Now we do the right thingRafael Espindola2011-05-011-1/+5
| | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130634 91177308-0d34-0410-b5e6-96231b3b80d8
* Micro optimization and improved similarity with gas' output:Rafael Espindola2011-04-071-10/+38
| | | | | | When two section names share a suffix, reuse the entry in shstrtab. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129115 91177308-0d34-0410-b5e6-96231b3b80d8
* Write the section table and the section data in the same order thatRafael Espindola2011-03-201-93/+196
| | | | | | | gun as does. This makes it a lot easier to compare the output of both as the addresses are now a lot closer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127972 91177308-0d34-0410-b5e6-96231b3b80d8
* Split MCEELFStreamer and ELFObjectWriter into .h and .cpp files, so that ↵Jan Sjödin2011-03-031-363/+1
| | | | | | other components can use them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126942 91177308-0d34-0410-b5e6-96231b3b80d8
* PR9352: Always emit a relocation for weak symbols. Not emitting relocationsEli Friedman2011-03-031-0/+19
| | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126933 91177308-0d34-0410-b5e6-96231b3b80d8
* Make all static functions become static class methods. Move shared ↵Jan Sjödin2011-02-281-89/+77
| | | | | | (duplicated) functions to new MCELF class. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126686 91177308-0d34-0410-b5e6-96231b3b80d8
* Put in the symbol table symbols only used in a .globl statement.Rafael Espindola2011-02-231-1/+5
| | | | | | Fixes PR9292. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126330 91177308-0d34-0410-b5e6-96231b3b80d8
* Handle FK_PCRel_1 and add a test case for this and FK_PCRel_4.Joerg Sonnenberger2011-02-211-0/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126157 91177308-0d34-0410-b5e6-96231b3b80d8
* Gas is very inconsistent about when a relaxation/relocation is needed. DoRafael Espindola2011-02-161-25/+0
| | | | | | the right thing and stop trying to copy it. Fixes PR8944. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125648 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach ARM/MC/ELF about gcc compatible reloc output to get past odd linkageJason W Kim2011-02-071-3/+45
| | | | | | | | | | | | | | | | | | | | failures with relocations. The code committed is a first cut at compatibility for emitted relocations in ELF .o. Why do this? because existing ARM tools like emitting relocs symbols as explicit relocations, not as section-offset relocs. Result is that with these changes, 1) relocs are now substantially identical what to gcc outputs. 2) larger apps (including many spec2k tests) compile, cross-link, and pass Added reminder fixme to tests for future conversion to .s form. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124996 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach ARM/MC/ELF about EF_ARM_EABI_VERSION. The magic number is set toJason W Kim2011-02-041-2/+15
| | | | | | | | | | | 5 to match the current doc. Added FIXME reminder Make it really configurable later. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124899 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach ARM/MC/ELF to handle R_ARM_JUMP24 relocation type for conditional jumps.Jason W Kim2011-02-041-4/+8
| | | | | | | | | | | | | | | | | | | (yes, this is different from R_ARM_CALL) - Adds a new method getARMBranchTargetOpValue() which handles the necessary distinction between the conditional and unconditional br/bl needed for ARM/ELF At least for ARM mode, the needed fixup for conditional versus unconditional br/bl is identical, but the ARM docs and existing ARM tools expect this reloc type... Added a few FIXME's for future naming fixups in ARMInstrInfo.td git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124895 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support for the --noexecstack option.Rafael Espindola2011-01-231-9/+21
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124077 91177308-0d34-0410-b5e6-96231b3b80d8
* Delay the creation of eh_frame so that the user can change the defaults.Rafael Espindola2011-01-231-0/+1
| | | | | | Add support for SHT_X86_64_UNWIND. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124059 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove more duplicated code.Rafael Espindola2011-01-231-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124056 91177308-0d34-0410-b5e6-96231b3b80d8
* Completed :lower16: / :upper16: support for movw / movt pairs on Darwin.Evan Cheng2011-01-141-0/+14
| | | | | | | | | - Fixed :upper16: fix up routine. It should be shifting down the top 16 bits first. - Added support for Thumb2 :lower16: and :upper16: fix up. - Added :upper16: and :lower16: relocation support to mach-o object writer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123424 91177308-0d34-0410-b5e6-96231b3b80d8
* Style clean up - break up the breaks.Jason W Kim2011-01-131-21/+40
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123347 91177308-0d34-0410-b5e6-96231b3b80d8
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