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path: root/include/llvm/Object/ELF.h
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* [C++11] Replace LLVM-style type traits with C++11 standard ones.Benjamin Kramer2014-03-07
| | | | | | No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203242 91177308-0d34-0410-b5e6-96231b3b80d8
* Try to unbreak Windows build after r188022Alexey Samsonov2013-08-09
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188057 91177308-0d34-0410-b5e6-96231b3b80d8
* llvm isn't C++11 yet :(Michael J. Spencer2013-08-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188023 91177308-0d34-0410-b5e6-96231b3b80d8
* [Object] Split the ELF interface into 3 parts.Michael J. Spencer2013-08-08
| | | | | | | | * ELFTypes.h contains template magic for defining types based on endianess, size, and alignment. * ELFFile.h defines the ELFFile class which provides low level ELF specific access. * ELFObjectFile.h contains ELFObjectFile which uses ELFFile to implement the ObjectFile interface. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188022 91177308-0d34-0410-b5e6-96231b3b80d8
* [PowerPC] Support powerpc64le as a syntax-checking target.Bill Schmidt2013-07-26
| | | | | | | | | | | | | | | | | | | | | | | | This patch provides basic support for powerpc64le as an LLVM target. However, use of this target will not actually generate little-endian code. Instead, use of the target will cause the correct little-endian built-in defines to be generated, so that code that tests for __LITTLE_ENDIAN__, for example, will be correctly parsed for syntax-only testing. Code generation will otherwise be the same as powerpc64 (big-endian), for now. The patch leaves open the possibility of creating a little-endian PowerPC64 back end, but there is no immediate intent to create such a thing. The LLVM portions of this patch simply add ppc64le coverage everywhere that ppc64 coverage currently exists. There is nothing of any import worth testing until such time as little-endian code generation is implemented. In the corresponding Clang patch, there is a new test case variant to ensure that correct built-in defines for little-endian code are generated. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187179 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Use pristine object file while processing relocations.Akira Hatanaka2013-07-24
| | | | | | | | | | | | | | | | | | | | | Similar to ARM change r182800, dynamic linker will read bits/addends from the original object rather than from the object that might have been patched previously. For the purpose of relocations for MCJIT stubs on MIPS, we internally use otherwise unused MIPS relocations. The change also enables MCJIT unit tests for MIPS (EL/BE), and the following two tests now pass: - MCJITTest.return_global and - MCJITTest.multiple_functions. These issues have been tracked as Bug 16250. Patch by Petar Jovanovic. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187019 91177308-0d34-0410-b5e6-96231b3b80d8
* Mark ELF's first symbol as format specific so that llvm-nm ignores it.Rafael Espindola2013-07-22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186860 91177308-0d34-0410-b5e6-96231b3b80d8
* [PowerPC] Add support for TLS data relocationsUlrich Weigand2013-07-01
| | | | | | | | | | | | This adds support for TLS data relocations and modifiers: .quad target@dtpmod .quad target@tprel .quad target@dtprel Currently exploited by the asm parser only. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185394 91177308-0d34-0410-b5e6-96231b3b80d8
* [PowerPC] Fix 32-bit PowerPC TLS relocsUlrich Weigand2013-07-01
| | | | | | | | | Some TLS relocs were copied incorrectly from ppc64 to ppc32, and some were missing completely. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185390 91177308-0d34-0410-b5e6-96231b3b80d8
* [PowerPC] Support @got modifierUlrich Weigand2013-06-25
| | | | | | | | | Add VK_... values and relocation types necessary to support the @got family of modifiers. Used by the asm parser only. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184860 91177308-0d34-0410-b5e6-96231b3b80d8
* [PowerPC] Support R_PPC_REL16 family of relocationsUlrich Weigand2013-06-21
| | | | | | | | | | | | | The GNU assembler supports (as extension to the ABI) use of PC-relative relocations in half16 fields, which allows writing code like: li 1, base-. This patch adds support for those relocation types in the assembler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184552 91177308-0d34-0410-b5e6-96231b3b80d8
* [PowerPC] Support various tls-related modifiersUlrich Weigand2013-06-21
| | | | | | | | | | | | The current code base only supports the minimum set of tls-related relocations and @modifiers that are necessary to support compiler- generated code. This patch extends this to the full set defined in the ABI (and supported by the GNU assembler) for the benefit of the assembler parser. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184551 91177308-0d34-0410-b5e6-96231b3b80d8
* [PowerPC] Support @higher et.al. modifiersUlrich Weigand2013-06-21
| | | | | | | | | This adds support for the @higher, @highera, @highest, and @highesta modifers, including some missing relocation types. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184550 91177308-0d34-0410-b5e6-96231b3b80d8
* [PowerPC] Support @toc@h modifierUlrich Weigand2013-06-21
| | | | | | | | | This adds the relocation type and other necessary infrastructure to use the @toc@h modifier in the assembler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184549 91177308-0d34-0410-b5e6-96231b3b80d8
* AArch64: print relocation addends if present on AArch64Tim Northover2013-06-17
| | | | | | | llvm-objdump should provide some way of printing out the addends present in the .rela sections for debugging purposes if nothing else. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184072 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't hide the first ELF symbol.Rafael Espindola2013-06-05
| | | | | | | | The first symbol on ELF is dummy, but it has a defined content and readelf normally displays it. With this change llvm-readobj also displays it and we can check that llvm-mc output is correct according to the standard. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183337 91177308-0d34-0410-b5e6-96231b3b80d8
* Represent symbols with a SymbolIndex,SectionIndex pair.Rafael Espindola2013-06-05
| | | | | | | | | | | With this patch we use the SectionIndex directly, instead of counting the number of symbol tables. This saves a DenseMap lookup every time we want to find which symbol a relocation refers to. Also simplify based on the fact that there is at most one SHT_SYMTAB and one SHT_DYNSYM. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183326 91177308-0d34-0410-b5e6-96231b3b80d8
* Handle relocations that don't point to symbols.Rafael Espindola2013-06-05
| | | | | | | | In ELF (as in MachO), not all relocations point to symbols. Represent this properly by using a symbol_iterator instead of a SymbolRef. Update llvm-readobj ELF's dumper to handle relocatios without symbols. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183284 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a couple of typos and 80-col.Eric Christopher2013-05-30
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182954 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix warning on varialbe unused in opt builds.Daniel Jasper2013-05-30
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182914 91177308-0d34-0410-b5e6-96231b3b80d8
* Change how we iterate over relocations on ELF.Rafael Espindola2013-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | For COFF and MachO, sections semantically have relocations that apply to them. That is not the case on ELF. In relocatable objects (.o), a section with relocations in ELF has offsets to another section where the relocations should be applied. In dynamic objects and executables, relocations don't have an offset, they have a virtual address. The section sh_info may or may not point to another section, but that is not actually used for resolving the relocations. This patch exposes that in the ObjectFile API. It has the following advantages: * Most (all?) clients can handle this more efficiently. They will normally walk all relocations, so doing an effort to iterate in a particular order doesn't save time. * llvm-readobj now prints relocations in the same way the native readelf does. * probably most important, relocations that don't point to any section are now visible. This is the case of relocations in the rela.dyn section. See the updated relocation-executable.test for example. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182908 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove dead return.Rafael Espindola2013-05-30
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182898 91177308-0d34-0410-b5e6-96231b3b80d8
* Add basic support for ELF32-ppc relocations to llvm-dwarfdump.Benjamin Kramer2013-05-18
| | | | | | Should help the ppc32 buildbot. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182194 91177308-0d34-0410-b5e6-96231b3b80d8
* Introduce convenience typedefs for the 4 ELF object types.Rafael Espindola2013-05-09
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181509 91177308-0d34-0410-b5e6-96231b3b80d8
* Change getRelocationAdditionalInfo to be ELF only.Rafael Espindola2013-05-09
| | | | | | | It was only implemented for ELF where it collected the Addend, so this patch also renames it to getRelocationAddend. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181502 91177308-0d34-0410-b5e6-96231b3b80d8
* [PowerPC] Add some missing PPC64 relocsUlrich Weigand2013-05-08
| | | | | | | | | | | | | | | All R_PPC_... relocs should also be present (using the same number) under the corresponding R_PPC64_... name. The latter were missing for a couple of cases, which this patch adds. This is not a big problem when emitting the reloc, because we can just use the R_PPC_... define instead. But it is a problem when *dumping* relocations e.g. using llvm-readobj, because this will expect only R_PPC64_... values when inspecting a ppc64 ELF file. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181451 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r181009.Amara Emerson2013-05-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181079 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support for reading ARM ELF build attributes.Amara Emerson2013-05-03
| | | | | | | | | | | | Build attribute sections can now be read if they exist via ELFObjectFile, and the llvm-readobj tool has been extended with an option to dump this information if requested. Regression tests are also included which exercise these features. Also update the docs with a fixed ARM ABI link and a new link to the Addenda which provides the build attributes specification. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181009 91177308-0d34-0410-b5e6-96231b3b80d8
* [SystemZ] Add ELF relocation supportRichard Sandiford2013-05-03
| | | | | | | | Another step towards reinstating the SystemZ backend. Tests will be included in the main backend patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181008 91177308-0d34-0410-b5e6-96231b3b80d8
* Add getSymbolAlignment to the ObjectFile interface.Rafael Espindola2013-04-29
| | | | | | | | | | | | | For regular object files this is only meaningful for common symbols. An object file format with direct support for atoms should be able to provide alignment information for all symbols. This replaces getCommonSymbolAlignment and fixes test-common-symbols-alignment.ll on darwin. This also includes a fix to MachOObjectFile::getSymbolFlags. It was marking undefined symbols as common (already tested by existing mcjit tests now that it is used). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180736 91177308-0d34-0410-b5e6-96231b3b80d8
* Clarify getRelocationAddress x getRelocationOffset a bit.Rafael Espindola2013-04-25
| | | | | | | | | | getRelocationAddress is for dynamic libraries and executables, getRelocationOffset for relocatable objects. Mark the getRelocationAddress of COFF and MachO as not implemented yet. Add a test of ELF's. llvm-readobj -r now prints the same values as readelf -r. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180259 91177308-0d34-0410-b5e6-96231b3b80d8
* Two small cleanups for ELF's templates.Rafael Espindola2013-04-17
| | | | | | | | | | * We only ever specialize these templates with an instantiation of ELFType, so we don't need a template template. * Replace LLVM_ELF_COMMA with just passing the individual parameters to the macro. This requires a second macro for when we only have ELFT, but that is still a small win. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179726 91177308-0d34-0410-b5e6-96231b3b80d8
* Add missing relocation namesNico Rieck2013-04-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179358 91177308-0d34-0410-b5e6-96231b3b80d8
* Support MIPS64EL relocation type namesNico Rieck2013-04-12
| | | | | | | | MIPS64EL relocation entries have up to three relocation operations. Because libObject only exposes a single relocation name, use the concatenation of the individual relocation type names. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179357 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unused argument.Rafael Espindola2013-04-07
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178987 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement the "mips endian" for r_info.Rafael Espindola2013-04-03
| | | | | | | | Normally r_info is just a 32 of 64 bit number matching the endian of the rest of the file. Unfortunately, mips 64 bit little endian is special: The top 32 bits are a little endian number and the following 32 are a big endian one. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178694 91177308-0d34-0410-b5e6-96231b3b80d8
* Implements low-level object file format specific output for COFF andEric Christopher2013-04-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ELF with support for: - File headers - Section headers + data - Relocations - Symbols - Unwind data (only COFF/Win64) The output format follows a few rules: - Values are almost always output one per line (as elf-dump/coff-dump already do). - Many values are translated to something readable (like enum names), with the raw value in parentheses. - Hex numbers are output in uppercase, prefixed with "0x". - Flags are sorted alphabetically. - Lists and groups are always delimited. Example output: ---------- snip ---------- Sections [ Section { Index: 1 Name: .text (5) Type: SHT_PROGBITS (0x1) Flags [ (0x6) SHF_ALLOC (0x2) SHF_EXECINSTR (0x4) ] Address: 0x0 Offset: 0x40 Size: 33 Link: 0 Info: 0 AddressAlignment: 16 EntrySize: 0 Relocations [ 0x6 R_386_32 .rodata.str1.1 0x0 0xB R_386_PC32 puts 0x0 0x12 R_386_32 .rodata.str1.1 0x0 0x17 R_386_PC32 puts 0x0 ] SectionData ( 0000: 83EC04C7 04240000 0000E8FC FFFFFFC7 |.....$..........| 0010: 04240600 0000E8FC FFFFFF31 C083C404 |.$.........1....| 0020: C3 |.| ) } ] ---------- snip ---------- Relocations and symbols can be output standalone or together with the section header as displayed in the example. This feature set supports all tests in test/MC/COFF and test/MC/ELF (and I suspect all additional tests using elf-dump), making elf-dump and coff-dump deprecated. Patch by Nico Rieck! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178679 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement sectionContainsSymbol for ELF.Eric Christopher2013-04-03
| | | | | | Patch by Nico Rieck! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178677 91177308-0d34-0410-b5e6-96231b3b80d8
* When dumping clear the arm/thumb flag for now.Eric Christopher2013-04-03
| | | | | | Patch by Nico Rieck! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178676 91177308-0d34-0410-b5e6-96231b3b80d8
* Mips direct object exception handling regressionJack Carter2013-04-01
| | | | | | | | | | | | | | | | | | | Revision 177141 caused a regression in all but mips64 little endian. That is because none of the other Mips targets had test cases checking the contents of the .eh_frame section. This patch fixes both the llvm code and adds an assembler test case to include the current 4 flavors. The test cases unfortunately rely on llvm-objdump. A preferable method would be to use a pretty printer output such as what readelf -wf <elf_file> would give. I also changed the name of the test case to correct a typo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178506 91177308-0d34-0410-b5e6-96231b3b80d8
* Object: Turn a couple of degenerate for loops into while loops.Benjamin Kramer2013-03-30
| | | | | | No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178413 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "Updated ELF relocation test for .eh_frame section"Michael Gottesman2013-03-28
| | | | | | | | This reverts commit c8d65364223a04b179958a50a4bf0f89b21dd7d2. This broke a bunch of the buildbots. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178222 91177308-0d34-0410-b5e6-96231b3b80d8
* Updated ELF relocation test for .eh_frame sectionJack Carter2013-03-27
| | | | | | | | | Made sure we were looking a correct section Added Mips32/64 as an extra check Updated llvm-objdump to generate symbolic info for Mips relocations git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178190 91177308-0d34-0410-b5e6-96231b3b80d8
* [ELF] dont compute symbolname size in every loopShankar Easwaran2013-03-25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177903 91177308-0d34-0410-b5e6-96231b3b80d8
* reflect comment to the official referenceShankar Easwaran2013-03-25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177895 91177308-0d34-0410-b5e6-96231b3b80d8
* [ELF] add elf_hash function to compute the hash value of a symbol in the ↵Shankar Easwaran2013-03-25
| | | | | | dynamic symbol table git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177872 91177308-0d34-0410-b5e6-96231b3b80d8
* [llvm-readobj] Add ELF .dynamic table dumping.Michael J. Spencer2013-02-20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175592 91177308-0d34-0410-b5e6-96231b3b80d8
* include/llvm/Object/ELF.h: do debug checks only when NDEBUGDmitry Vyukov2013-02-14
| | | | | | | | validateSymbol() is called all over the place, and it seems it's a debug check. It significantly speedups llvm-symbolizer used in tsan/asan/msan. validateSymbol() is the second hot function and accounts for 15% of runtime. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175192 91177308-0d34-0410-b5e6-96231b3b80d8
* [Object][ELF] Add a way to get the dynamic symbol table section.Michael J. Spencer2013-02-07
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174682 91177308-0d34-0410-b5e6-96231b3b80d8
* [Object][ELF] Add {begin,end}_elf_dynamic_symbols to non-virtually iterate ↵Michael J. Spencer2013-02-07
| | | | | | over dynamic symbols. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174681 91177308-0d34-0410-b5e6-96231b3b80d8
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