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2010-10-15Refactor alias handling to AliasedSymbol.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116600 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-15Refactor code a bit and avoid creating unnecessary entries in the stringRafael Espindola
map. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116579 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-14Remove some code duplication.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116484 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-09MC-COFF: Fix .bss section size. Fixes PR8335. Patch by NAKAMUTA Takumi!Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116155 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-09MC-COFF: Implement InitSections. Fixes PR8335.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116151 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-09MC-COFF: Add COFFAsmParser. Completes PR8343.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116150 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-09Fix Whitespace.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116149 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-09MC-COFF: Assert on non-coff sections.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116148 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-09MC: Move ParseDirectiveELFType into ELFAsmParser. COFF uses .type for ↵Michael J. Spencer
something else. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116142 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-07MC-COFF: Handle relaxation in COFF better. Fixes PR8321.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116013 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-07Minor cosmetic change: fix DOSish \r\n.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115910 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-07MC-COFF: Fix symbol aliases. Fixes PR8251.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115909 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-06Another case of 256 sections not being enough :-)Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115858 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-06Get binding and visibility info from the the alias, but Type from the symbolRafael Espindola
being aliased. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115836 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-06MC: Add missing forward in MCLoggingStreamer.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115830 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-06If a symbol is global, reloc against it even if it is in a mergeable section.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115817 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-06Make sure weak symbols are listed after the local ones.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115795 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-06Correctly handle GOTPCREL relocations.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115793 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05Use a relocation against the symbol if it is a PLT and the symbol is in anotherRafael Espindola
section. Common because of linkonce sections. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115718 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05Implement more alias cases.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115699 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05256 sections should be enough for anyone...Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115687 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05Don't crash in a strange .size directive.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115684 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05Fix Punctuation.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115657 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05MC-COFF: Fix (PR8278) temporary symbol relocations.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115656 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05Add support for a fill value in the .zero directive.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115655 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05Implement a simple alias case and refactor the code a bit so that theRafael Espindola
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
2010-10-05Produce a undefined reference to _GLOBAL_OFFSET_TABLE_ when needed.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115623 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05On ELF we need to know which symbols are used in relocations to decide ifRafael Espindola
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
2010-10-04Incorporate suggestions by Daniel Dunbar after his review. Thanks Daniel!Kevin Enderby
1) Changed ValidateDwarfFileNumber() to isValidDwarfFileNumber() to be better named. Since it is just a predicate and isn't actually changing any state. 2) Added a missing return in the comments for setCurrentDwarfLoc() in include/llvm/MC/MCContext.h for fix formatting. 3) Changed clearDwarfLocSeen() to ClearDwarfLocSeen() since it does change state. 4) Simplified the last test in isValidDwarfFileNumber() to just a one line boolean test of MCDwarfFiles[FileNumber] != 0 for the final return statement. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115551 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-04Implement ELF::R_X86_64_GOTPCREL.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115547 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-04Move isFixupKindX86PCRel.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115545 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-04Produce a R_X86_64_PLT32 when needed.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115541 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-04Produce a R_X86_64_GOT32 when needed.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115537 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-04Add hook in MCSection to decide when to use "optimized nops", for eachJan Wen Voung
section kind. Previously, optimized nops were only used for MachO. Also added tests for ELF and COFF. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115523 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-04Include the section address in the computation of the relocation.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115509 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-04Correctly compute the relocation when it is not in the first fragment.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115506 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-03Implement a very basic PIC case.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115454 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-02This adds a Darwin x86_64 relocation encoding for a subtraction expressionKevin Enderby
where both symbols are "local", that is non-external symbols, and there is no "base" for the symbols used in the expression, that is the section has no non-temporary symbols. This case looks like this: % cat local_reloc_A-B.s .long 0 LB: .long 1 .long LA - LB - 4 .long 2 LA: .long 3 which llvm-mc will not encode without this patch, generates a "unsupported local relocations in difference" error, but the Darwin assembler will encode with relocation entries like this: % otool -rv a.out l.out a.out: Relocation information (__TEXT,__text) 2 entries address pcrel length extern type scattered symbolnum/value 00000008 False long False SUB False 1 (__TEXT,__text) 00000008 False long False UNSIGND False 1 (__TEXT,__text) which is very similar to what is encoded when the symbols don't have the leading 'L' and they are not temporary symbols. Which llvm-mc and the Darwin assembler will encoded like this: Relocation information (__TEXT,__text) 2 entries address pcrel length extern type scattered symbolnum/value 00000008 False long True SUB False B 00000008 False long True UNSIGND False A This is the missing relocation encoding needed to allow the Mach-O x86 Dwarf file and line table to be emitted. So this patch also removes the TODO from the if() statement in MCMachOStreamer::Finish() that didn't call MCDwarfFileTable::Emit() for 64-bit targets. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115389 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-30Factor some logic into ShouldRelocOnSymbol. This simplifies the code andRafael Espindola
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
2010-09-30This is the last major patch to implement support for the .loc directiveKevin Enderby
and output the dwarf line number tables. This contains the code to emit and encode the dwarf line tables from the previously gathered information in the MCLineSection objects. This contains all the details to encode the line and address deltas into the dwarf line table. To do this an MCDwarfLineAddrFragment has been added. Also this moves the interface code out of Mach-O streamer into MCDwarf so it should be useable by other object file formats. There is now one call to be made from an MCObjectStreamer EmitInstruction() method: MCLineEntry::Make(this, getCurrentSection()); to create a line entry after each instruction is assembled. And one call call to be made from an MCObjectStreamer Finish() method: MCDwarfFileTable::Emit(this, DwarfLineSection); when getContext().hasDwarfFiles() is true and is passed a object file specific MCSection where to emit the dwarf file and the line tables. This appears to now be correct for 32-bit targets, at least x86. But the relocation entries for 64-bit Darwin needs some further work which is next up to work on. So for now the 64-bit Mach-O target does not output the dwarf file and line tables. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115157 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-30Changes EvaluateAsAbsolute() to return the "current value" of the expressionKevin Enderby
if we are given a Layout object, even in cases when the value is not fixed. This will be needed by the final patch for the dwarf .loc support to size a new MCDwarf fragment needed to build and emit dwarf line number tables. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115155 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-30Silence a GCC warning about not handling all flags in this switch, weChandler Carruth
specifically assert on unexpected flags. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115143 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-30Move logic of determining ELF entsize from the .s printer to initializationJan Wen Voung
time. That way, the EntrySize field is initialized for other code paths, namely, the .ll -> .o code path. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115141 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-30Correctly produce R_X86_64_32 or R_X86_64_32S.Rafael Espindola
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
2010-09-30Tiny patch for proof-of-concept cleanup of ARMAsmPrinter::EmitStartOfAsmFile()Jason W Kim
Small test for sanity check of resulting ARM .s file. Tested against -r115129. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115133 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-30Have ELFAsmParser.cpp use the already parsed "Size" (entry size) when Jan Wen Voung
constructing a section. Test for a few cases also included. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115132 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-30Make it possible for the MCObjectWriter to decide if a given fixup is fullyRafael Espindola
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
2010-09-30Test commit - Deleted some whitespace at the end of a line.Jan Wen Voung
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115122 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-29Move "local commons" to the end of .bss to match the gnu as behavior.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115037 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-29MC-COFF: Fix symbol storage class for globalsMichael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115020 91177308-0d34-0410-b5e6-96231b3b80d8
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