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* MC: Separate creating a generic object writer from creating a target object ↵Peter Collingbourne2018-05-211-5/+3
| | | | | | | | | | | | | writer. NFCI. With this we gain a little flexibility in how the generic object writer is created. Part of PR37466. Differential Revision: https://reviews.llvm.org/D47045 llvm-svn: 332868
* [llvm-mc] - Produce R_X86_64_PLT32 for "call/jmp foo".George Rimar2018-02-201-0/+3
| | | | | | | | | | | For instructions like call foo and jmp foo patch changes relocation produced from R_X86_64_PC32 to R_X86_64_PLT32. Relocation can be used as a marker for 32-bit PC-relative branches. Linker will reduce PLT32 relocation to PC32 if function is defined locally. Differential revision: https://reviews.llvm.org/D43383 llvm-svn: 325569
* [MC] Thread unique_ptr<MCObjectWriter> through the create.*ObjectWriterLang Hames2017-10-101-3/+4
| | | | | | | | | | functions. This makes the ownership of the resulting MCObjectWriter clear, and allows us to remove one instance of MCObjectStreamer's bizarre "holding ownership via someone else's reference" trick. llvm-svn: 315327
* [MC] Plumb unique_ptr<MCELFObjectTargetWriter> through createELFObjectWriter toLang Hames2017-10-091-3/+2
| | | | | | | | | | ELFObjectWriter's constructor. Fixes the same ownership issue for ELF that r315245 did for MachO: ELFObjectWriter takes ownership of its MCELFObjectTargetWriter, so we want to pass this through to the constructor via a unique_ptr, rather than a raw ptr. llvm-svn: 315254
* Move Object format code to lib/BinaryFormat.Zachary Turner2017-06-071-1/+1
| | | | | | | | | | | | This creates a new library called BinaryFormat that has all of the headers from llvm/Support containing structure and layout definitions for various types of binary formats like dwarf, coff, elf, etc as well as the code for identifying a file from its magic. Differential Revision: https://reviews.llvm.org/D33843 llvm-svn: 304864
* [X86] Fix some Clang-tidy modernize and Include What You Use warnings; other ↵Eugene Zelenko2017-02-021-12/+13
| | | | | | minor fixes (NFC). llvm-svn: 293949
* MC: Introduce the ABS8 symbol modifier.Peter Collingbourne2017-01-311-0/+2
| | | | | | | | | | | @ABS8 can be applied to symbols which appear as immediate operands to instructions that have a 8-bit immediate form for that operand. It causes the assembler to use the 8-bit form and an 8-bit relocation (e.g. R_386_8 or R_X86_64_8) for the symbol. Differential Revision: https://reviews.llvm.org/D28688 llvm-svn: 293667
* Add initial support for R_386_GOT32X.Rafael Espindola2016-07-061-7/+18
| | | | | | This adds it only for movl mov@GOT(%reg), %reg. llvm-svn: 274678
* Fix production of R_X86_64_GOTPCRELX/R_X86_64_REX_GOTPCRELX.Rafael Espindola2016-05-281-1/+4
| | | | | | | | We were producing R_X86_64_GOTPCRELX for invalid instructions and sometimes producing R_X86_64_GOTPCRELX instead of R_X86_64_REX_GOTPCRELX. llvm-svn: 271118
* [MC/ELF] Implement support for GOTPCRELX/REX_GOTPCRELX.Davide Italiano2016-04-241-5/+19
| | | | | | | | | The option to control the emission of the new relocations is -relax-relocations (blatantly copied from GNU as). It can't be enabled by default because it breaks relatively recent versions of ld.bfd/ld.gold (late 2015). llvm-svn: 267307
* [MC/ELF] Pass Fixup to getRelocType64.Davide Italiano2016-04-231-2/+3
| | | | | | In preparation for other changes. llvm-svn: 267300
* [MC] support TLSDESC and TLSCALL / GNU2 tls dialectDavide Italiano2016-04-091-0/+4
| | | | | | Differential Revision: http://reviews.llvm.org/D18885 llvm-svn: 265881
* Convert a few assert failures into proper errors.Rafael Espindola2016-01-131-10/+18
| | | | | | Fixes PR25944. llvm-svn: 257697
* [ELF] elfiamcu triple should imply e_machine == EM_IAMCUMichael Kuperstein2015-11-041-4/+7
| | | | | | Differential Revision: http://reviews.llvm.org/D14109 llvm-svn: 252043
* Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC)Alexander Kornienko2015-06-231-1/+1
| | | | | | Apparently, the style needs to be agreed upon first. llvm-svn: 240390
* Fixed/added namespace ending comments using clang-tidy. NFCAlexander Kornienko2015-06-191-1/+1
| | | | | | | | | | | | | The patch is generated using this command: tools/clang/tools/extra/clang-tidy/tool/run-clang-tidy.py -fix \ -checks=-*,llvm-namespace-comment -header-filter='llvm/.*|clang/.*' \ llvm/lib/ Thanks to Eugene Kosov for the original patch! llvm-svn: 240137
* Handle 16 bit PC relative relocations.Rafael Espindola2015-06-061-0/+1
| | | | | | Fixes pr23771. llvm-svn: 239214
* Use raw_pwrite_stream in the object writer/streamer.Rafael Espindola2015-04-141-2/+2
| | | | | | The ELF object writer will take advantage of that in the next commit. llvm-svn: 234950
* Use 'override/final' instead of 'virtual' for overridden methodsAlexander Kornienko2015-04-111-1/+2
| | | | | | | | | | | | | | The patch is generated using clang-tidy misc-use-override check. This command was used: tools/clang/tools/extra/clang-tidy/tool/run-clang-tidy.py \ -checks='-*,misc-use-override' -header-filter='llvm|clang' \ -j=32 -fix -format http://reviews.llvm.org/D8925 llvm-svn: 234679
* clang-format bits of code to make a followup patch easy to read.Rafael Espindola2015-04-091-2/+1
| | | | llvm-svn: 234519
* Silence a GCC warningDavid Majnemer2015-03-221-2/+2
| | | | llvm-svn: 232923
* Fixed MSVC compile warning issue introduced in r232837Simon Pilgrim2015-03-221-1/+2
| | | | | | - was reporting 'warning C4715: 'getType32' : not all control paths return a value' llvm-svn: 232913
* X86: Make helper functions static. NFC.Benjamin Kramer2015-03-201-4/+4
| | | | llvm-svn: 232848
* Reorganize the x86 ELF relocation selection logic.Rafael Espindola2015-03-201-176/+198
| | | | | | | | | | | | | | | The main differences are: * Split in 32 and 64 bit functions. * First switch on the Modifier so that we have only one non fully covered switch. * Map the fixup kind first to a x86_64 (or i386) specific enum, to make it easy to handle cases like X86::reloc_riprel_4byte_movq_load. * Switch on IsPCRel last, which reduces code duplication. Fixes pr22308. llvm-svn: 232837
* Reduce indentation after return. NFC.Rafael Espindola2015-03-201-138/+125
| | | | llvm-svn: 232814
* Use early returns. NFC.Rafael Espindola2015-03-201-104/+50
| | | | llvm-svn: 232813
* Fold a llvm_unreachable into an assert. NFC.Rafael Espindola2015-03-201-3/+3
| | | | llvm-svn: 232811
* clang-format a function. NFC.Rafael Espindola2015-03-201-12/+32
| | | | llvm-svn: 232810
* Handle X86::reloc_riprel_4byte in 32 bits mode.Rafael Espindola2015-03-181-0/+1
| | | | | | | | We can get there with .code64. Fixes pr22349. llvm-svn: 232651
* [MC][Target] Implement support for R_X86_64_SIZE{32,64}.Davide Italiano2015-03-041-0/+6
| | | | | | | Differential Revision: D7990 Reviewed by: rafael, majnemer llvm-svn: 231216
* Support @PLT loads on 32bit x86.Joerg Sonnenberger2015-01-151-0/+3
| | | | llvm-svn: 226182
* X86, MC: Tidy up some whitespace in GetRelocTypeDavid Majnemer2014-11-061-1/+1
| | | | | | No functionality change intended. llvm-svn: 221443
* Fix pr19645.Rafael Espindola2014-05-031-1/+1
| | | | | | | | | | | | | | | | The fix itself is fairly simple: move getAccessVariant to MCValue so that we replace the old weak expression evaluation with the far more general EvaluateAsRelocatable. This then requires that EvaluateAsRelocatable stop when it finds a non trivial reference kind. And that in turn requires the ELF writer to look harder for weak references. Last but not least, this found a case where we were being bug by bug compatible with gas and accepting an invalid input. I reported pr19647 to track it. llvm-svn: 207920
* Handle _GLOBAL_OFFSET_TABLE_ in 64 bit mode.Rafael Espindola2014-04-211-0/+6
| | | | | | | | | With this MC is able to handle _GLOBAL_OFFSET_TABLE_ in 64 bit mode, which is needed for medium and large code models. This fixes pr19470. llvm-svn: 206793
* Remove another unused argument.Rafael Espindola2014-03-271-3/+2
| | | | llvm-svn: 204961
* Remove unused argument.Rafael Espindola2014-03-271-4/+2
| | | | llvm-svn: 204956
* Look through variables when computing relocations.Rafael Espindola2014-03-201-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Given bar = foo + 4 .long bar MC would eat the 4. GNU as includes it in the relocation. The rule seems to be that a variable that defines a symbol is used in the relocation and one that does not define a symbol is evaluated and the result included in the relocation. Fixing this unfortunately required some other changes: * Since the variable is now evaluated, it would prevent the ELF writer from noticing the weakref marker the elf streamer uses. This patch then replaces that with a VariantKind in MCSymbolRefExpr. * Using VariantKind then requires us to look past other VariantKind to see .weakref bar,foo call bar@PLT doing this also fixes zed = foo +2 call zed@PLT so that is a good thing. * Looking past VariantKind means that the relocation selection has to use the fixup instead of the target. This is a reboot of the previous fixes for MC. I will watch the sanitizer buildbot and wait for a build before adding back the previous fixes. llvm-svn: 204294
* [C++11] Add 'override' keyword to virtual methods that override their base ↵Craig Topper2014-03-091-3/+3
| | | | | | class. llvm-svn: 203418
* [x86] Support R_386_PC8, R_386_PC16 and R_X86_64_PC8David Woodhouse2014-01-081-0/+23
| | | | llvm-svn: 198763
* This commit adds some (but not all) of the x86-64 relocations that are notTom Roeder2013-10-301-0/+6
| | | | | | currently supported in the ELF object writer, along with a simple test case. llvm-svn: 193709
* X86: Use R_X86_64_TPOFF64 for FK_Data_8David Majnemer2013-09-221-0/+3
| | | | | | | | | | | | | | | | | | | Summary: LLVM would crash when trying to come up with a relocation type for assembly like: movabsq $V@TPOFF, %rax Instead, we say the relocation type is R_X86_64_TPOFF64. Fixes PR17274. Reviewers: dblaikie, nrieck, rafael CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D1717 llvm-svn: 191163
* Integrate Assembler: Support X86_64_DTPOFF64 relocationsDavid Blaikie2013-06-281-1/+12
| | | | llvm-svn: 185131
* Enable ELF machine type to be specified explicitly in X86 backendMichael Liao2012-10-301-11/+14
| | | | llvm-svn: 167027
* Move the X86 specific bits of the ELF writer to the Target/X86 directory.Rafael Espindola2011-12-211-0/+224
Other targets will follow shortly. llvm-svn: 147060
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