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* Move everything depending on Object/MachOFormat.h over to Support/MachO.h.Charles Davis2013-09-011-31/+31
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189728 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "Fix the build broken by r189315." and "Move everything depending on ↵Charles Davis2013-08-271-32/+32
| | | | | | | | | Object/MachOFormat.h over to Support/MachO.h." This reverts commits r189319 and r189315. r189315 broke some tests on what I believe are big-endian platforms. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189321 91177308-0d34-0410-b5e6-96231b3b80d8
* Move everything depending on Object/MachOFormat.h over to Support/MachO.h.Charles Davis2013-08-271-32/+32
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189315 91177308-0d34-0410-b5e6-96231b3b80d8
* memcmp is not a valid way to compare structs with padding in them.Benjamin Kramer2013-08-201-2/+9
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188778 91177308-0d34-0410-b5e6-96231b3b80d8
* Adding PIC support for ELF on x86_64 platformsAndrew Kaylor2013-08-194-16/+244
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188726 91177308-0d34-0410-b5e6-96231b3b80d8
* Adding comments to document RuntimeDyld relocation handlingAndrew Kaylor2013-08-193-1/+44
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188697 91177308-0d34-0410-b5e6-96231b3b80d8
* Fixed RuntimeDyldELF absolute relocations.Richard Mitton2013-08-161-1/+11
| | | | | | | | | If an ELF relocation is pointed at an absolute address, it will have a symbol ID of zero. RuntimeDyldELF::processRelocationRef was not previously handling this case, and was instead trying to handle it as a section-relative fixup. I think this is the right fix here, but my elf-fu is poor on some of the more exotic platforms, so I'd appreciate it if anyone with greater knowledge could verify this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188572 91177308-0d34-0410-b5e6-96231b3b80d8
* Support X86_64_GOTLoad relocations in RuntimeDyldMachO by treating them theLang Hames2013-08-151-4/+4
| | | | | | | | | | | | | | | | | | same way as X86_64_GOT relocations. The 'Load' part of GOTLoad is just an optimization hint for the linker anyway, and can be safely ignored. This patch also fixes some minor issues with the relocations introduced while processing an X86_64_GOT[Load]: the addend for the GOT entry should always be zero, and the addend for the replacement relocation at the original offset should be the same as the addend of the relocation being replaced. I haven't come up with a good way of testing this yet, but I'm working on it. This fixes <rdar://problem/14651564>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188499 91177308-0d34-0410-b5e6-96231b3b80d8
* Optimistically ignore scattered relocations in MachO in RuntimeDyld. ThisLang Hames2013-08-091-0/+10
| | | | | | | | | | un-breaks simple use cases while I work on more general support. <rdar://problem/14487667> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188044 91177308-0d34-0410-b5e6-96231b3b80d8
* [Object] Split the ELF interface into 3 parts.Michael J. Spencer2013-08-081-4/+3
| | | | | | | | * 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 Schmidt2013-07-263-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | 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
* AArch64: don't mask off shift bits when processing JIT relocations.Tim Northover2013-07-251-4/+4
| | | | | | | This should actually make the MCJIT tests pass again on AArch64. I don't know how I missed their failure before. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187120 91177308-0d34-0410-b5e6-96231b3b80d8
* [mips] Use pristine object file while processing relocations.Akira Hatanaka2013-07-241-7/+20
| | | | | | | | | | | | | | | | | | | | | 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
* AArch64: correct CodeGen of MOVZ/MOVK combinations.Tim Northover2013-07-011-7/+8
| | | | | | | | | | | | According to the AArch64 ELF specification (4.6.8), it's the assembler's responsibility to make sure the shift amount is correct in relocated MOVZ/MOVK instructions. This wasn't being obeyed by either the MCJIT CodeGen or RuntimeDyldELF (which happened to work out well for JIT tests). This commit should make us compliant in this area. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185360 91177308-0d34-0410-b5e6-96231b3b80d8
* Basic support for parsing Mach-O universal binaries in LLVMObject libraryAlexey Samsonov2013-06-181-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184191 91177308-0d34-0410-b5e6-96231b3b80d8
* Convert another use of sys::identifyFileType.Rafael Espindola2013-06-111-26/+28
| | | | | | No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183758 91177308-0d34-0410-b5e6-96231b3b80d8
* Pass a StringRef to sys::identifyFileType.Rafael Espindola2013-06-101-3/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183669 91177308-0d34-0410-b5e6-96231b3b80d8
* Handle (at least don't crash on) relocations with no symbols.Rafael Espindola2013-06-051-6/+11
| | | | | | Should fix the MCJIT tests on PPC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183288 91177308-0d34-0410-b5e6-96231b3b80d8
* Handle relocations that don't point to symbols.Rafael Espindola2013-06-052-11/+8
| | | | | | | | 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
* Update RuntimeDyldELF::findOPDEntrySection the new relocation iterators.Rafael Espindola2013-06-031-3/+7
| | | | | | | This was missing from r182908. I didn't noticed it at the time because the MCJIT tests were disabled when building with cmake on ppc64 (which I fixed in r183143). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183147 91177308-0d34-0410-b5e6-96231b3b80d8
* Change how we iterate over relocations on ELF.Rafael Espindola2013-05-301-4/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | 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
* ARM: use pristine object file while processing relocationsTim Northover2013-05-281-15/+23
| | | | | | | | | | | | | | Previously we would read-modify-write the target bits when processing relocations for the MCJIT. This had the problem that when relocations were processed multiple times for the same object file (as they can be), the result is not idempotent and the values became corrupted. The solution to this is to take any bits used in the destination from the pristine object file as LLVM emitted it. This should fix PR16013 and remote MCJIT on ARM ELF targets. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182800 91177308-0d34-0410-b5e6-96231b3b80d8
* Put RTDyldMemoryManager into its own file, and make it linked into Filip Pizlo2013-05-211-2/+0
| | | | | | | | | | | | | | | | | | | | libExecutionEngine. Move method implementations that aren't specific to allocation out of SectionMemoryManager and into RTDyldMemoryManager. This is in preparation for exposing RTDyldMemoryManager through the C API. This is a fixed version of r182407 and r182411. That first revision broke builds because I forgot to move the conditional includes of various POSIX headers from SectionMemoryManager into RTDyldMemoryManager. Those includes are necessary because of how getPointerToNamedFunction works around the glibc libc_nonshared.a thing. The latter revision still broke things because I forgot to include llvm/Config/config.h. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182418 91177308-0d34-0410-b5e6-96231b3b80d8
* Roll out r182411 and 182412 because it's still broken.Filip Pizlo2013-05-211-0/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182415 91177308-0d34-0410-b5e6-96231b3b80d8
* Put RTDyldMemoryManager into its own file, and make it linked into Filip Pizlo2013-05-211-2/+0
| | | | | | | | | | | | | | | | | | libExecutionEngine. Move method implementations that aren't specific to allocation out of SectionMemoryManager and into RTDyldMemoryManager. This is in preparation for exposing RTDyldMemoryManager through the C API. This is a fixed version of r182407. That revision broke builds because I forgot to move the conditional includes of various POSIX headers from SectionMemoryManager into RTDyldMemoryManager. Those includes are necessary because of how getPointerToNamedFunction works around the glibc libc_nonshared.a thing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182411 91177308-0d34-0410-b5e6-96231b3b80d8
* Roll out r182407 and r182408 because they broke builds.Filip Pizlo2013-05-211-0/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182409 91177308-0d34-0410-b5e6-96231b3b80d8
* Put RTDyldMemoryManager into its own file, and make it linked into Filip Pizlo2013-05-211-2/+0
| | | | | | | | | | | | libExecutionEngine. Move method implementations that aren't specific to allocation out of SectionMemoryManager and into RTDyldMemoryManager. This is in preparation for exposing RTDyldMemoryManager through the C API. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182407 91177308-0d34-0410-b5e6-96231b3b80d8
* AArch64: make RuntimeDyld relocations idempotentTim Northover2013-05-191-2/+22
| | | | | | | | | | AArch64 ELF uses .rela relocations so there's no need to actually make use of the bits we're setting in the destination However, we should make sure all bits are cleared properly since multiple runs of resolveRelocations are possible and these could combine to produce invalid results if stale versions remain in the code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182214 91177308-0d34-0410-b5e6-96231b3b80d8
* r182085 introduced a change that triggered an assertion on ARM. This is an ↵David Tweed2013-05-171-2/+4
| | | | | | | | | immediate fix which doesn't resolve the deeper problem. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182098 91177308-0d34-0410-b5e6-96231b3b80d8
* Change getRelocationAdditionalInfo to be ELF only.Rafael Espindola2013-05-091-4/+4
| | | | | | | 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: Fix unimplemented relocation on ppc64Adhemerval Zanella2013-05-061-0/+5
| | | | | | | | This patch handles the R_PPC64_REL64 relocation type for powerpc64 for mcjit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181220 91177308-0d34-0410-b5e6-96231b3b80d8
* Add EH support to the MCJIT.Rafael Espindola2013-05-056-7/+115
| | | | | | | | | This gets exception handling working on ELF and Macho (x86-64 at least). Other than the EH frame registration, this patch also implements support for GOT relocations which are used to locate the personality function on MachO. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181167 91177308-0d34-0410-b5e6-96231b3b80d8
* AArch64: implement 64-bit absolute relocation in MCJITTim Northover2013-05-041-0/+5
| | | | | | | | | This is about the simplest relocation, but surprisingly rare in actual code. It occurs in (for example) the MCJIT test test-ptr-reloc.ll. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181134 91177308-0d34-0410-b5e6-96231b3b80d8
* AArch64: add stubs to support long function calls on MCJITTim Northover2013-05-043-2/+84
| | | | | | | | | | | | | | | | | | | | As with global accesses, external functions could exist anywhere in memory. Therefore the stub must create a complete 64-bit address. This patch implements the fragment as (roughly): movz x16, #:abs_g3:somefunc movk x16, #:abs_g2_nc:somefunc movk x16, #:abs_g1_nc:somefunc movk x16, #:abs_g0_nc:somefunc br x16 In principle we could save 4 bytes by using a literal-load instead, but it is unclear that would be more efficient and can only be tested when real hardware is readily available. This allows (for example) the MCJIT test 2003-05-07-ArgumentTest to pass on AArch64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181133 91177308-0d34-0410-b5e6-96231b3b80d8
* AArch64: implement relocations for global accessTim Northover2013-05-041-0/+31
| | | | | | | | | | | | | | | | | The large memory model (default and main viable for JIT) emits addresses in need of relocation as movz x0, #:abs_g3:somewhere movk x0, #:abs_g2_nc:somewhere movk x0, #:abs_g1_nc:somewhere movk x0, #:abs_g0_nc:somewhere To support this we must implement those four relocations in the dynamic loader. This allows (for example) the test-global.ll MCJIT test to pass on AArch64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181132 91177308-0d34-0410-b5e6-96231b3b80d8
* AArch64: implement first relocation required for MCJITTim Northover2013-05-042-0/+39
| | | | | | | | | | | R_AARCH64_PCREL32 is present in even trivial .eh_frame sections and so is required to compile any function without the "nounwind" attribute. This change implements very basic infrastructure in the RuntimeDyldELF file and allows (for example) the test-shift.ll MCJIT test to pass on AArch64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181131 91177308-0d34-0410-b5e6-96231b3b80d8
* [SystemZ] Add MCJIT supportRichard Sandiford2013-05-034-0/+113
| | | | | | | | | Another step towards reinstating the SystemZ backend. I'll commit the configure changes separately (TARGET_HAS_JIT etc.), then commit a patch to enable the MCJIT tests on SystemZ. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181015 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix Addend computation for non external relocations on Macho.Rafael Espindola2013-04-301-28/+10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180790 91177308-0d34-0410-b5e6-96231b3b80d8
* Collect the Addend for external relocs.Rafael Espindola2013-04-301-5/+12
| | | | | | | This fixes 2013-04-04-RelocAddend.ll. We don't have a testcase for non external relocs with an Addend. I will try to write one. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180767 91177308-0d34-0410-b5e6-96231b3b80d8
* Add getSymbolAlignment to the ObjectFile interface.Rafael Espindola2013-04-294-18/+2
| | | | | | | | | | | | | 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
* Rationalize what is public in RuntimeDyldMachO and RuntimeDyldELF.Rafael Espindola2013-04-292-25/+18
| | | | | | | | The implemented RuntimeDyldImpl interface is public. Everything else is private. Since these classes are not inherited from (yet), there is no need to have protected members. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180733 91177308-0d34-0410-b5e6-96231b3b80d8
* Update the documentation.Rafael Espindola2013-04-291-5/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180725 91177308-0d34-0410-b5e6-96231b3b80d8
* Use a RelocationRef instead of a relocation_iterator.Rafael Espindola2013-04-296-13/+13
| | | | | | No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180723 91177308-0d34-0410-b5e6-96231b3b80d8
* Propagate relocation info to resolveRelocation.Rafael Espindola2013-04-296-41/+58
| | | | | | This gets most of the MCJITs tests passing with MachO. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180716 91177308-0d34-0410-b5e6-96231b3b80d8
* Replace ObjRelocationInfo with relocation_iterator.Rafael Espindola2013-04-296-65/+59
| | | | | | | | | | | For MachO we need information that is not represented in ObjRelocationInfo. Instead of copying the bits we think are needed from a relocation_iterator, just pass the relocation_iterator down to the format specific functions. No functionality change yet as we still drop the information once processRelocationRef returns. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180711 91177308-0d34-0410-b5e6-96231b3b80d8
* Use llvm/Object/MachO.h in macho-dumper. Drop the old macho parser.Rafael Espindola2013-04-261-1/+1
| | | | | | | | | | | | | | | | | | | | | For Mach-O there were 2 implementations for parsing object files. A standalone llvm/Object/MachOObject.h and llvm/Object/MachO.h which implements the generic interface in llvm/Object/ObjectFile.h. This patch adds the missing features to MachO.h, moves macho-dump to use MachO.h and removes ObjectFile.h. In addition to making sure that check-all is clean, I checked that the new version produces exactly the same output in all Mach-O files in a llvm+clang build directory (including executables and shared libraries). To test the performance, I ran macho-dump over all the files in a llvm+clang build directory again, but this time redirecting the output to /dev/null. Both the old and new versions take about 4.6 seconds (2.5 user) to finish. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180624 91177308-0d34-0410-b5e6-96231b3b80d8
* Two small cleanups for ELF's templates.Rafael Espindola2013-04-171-1/+1
| | | | | | | | | | * 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
* Make the host endianness check an integer constant expression.Rafael Espindola2013-04-151-3/+3
| | | | | | | | | | | | | | | I will remove the isBigEndianHost function once I update clang. The ifdef logic is designed to * not use configure/cmake to avoid breaking -arch i686 -arch ppc. * default to little endian * be as small as possible It looks like sys/endian.h is the preferred header on most modern BSD systems, but it is better to change this in a followup patch as machine/endian.h is available on FreeBSD, OpenBSD, NetBSD and OS X. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179527 91177308-0d34-0410-b5e6-96231b3b80d8
* Respect Addend when processing MCJIT relocations to local/global symbols.Ulrich Weigand2013-04-051-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the RuntimeDyldELF::processRelocationRef routine finds the target symbol of a relocation in the local or global symbol table, it performs a section-relative relocation: Value.SectionID = lsi->second.first; Value.Addend = lsi->second.second; At this point, however, any Addend that might have been specified in the original relocation record is lost. This is somewhat difficult to trigger for relocations within the code section since they usually do not contain non-zero Addends (when built with the default JIT code model, in any case). However, the problem can be reliably triggered by a relocation within the data section caused by code like: int test[2] = { -1, 0 }; int *p = &test[1]; The initializer of "p" will need a relocation to "test + 4". On platforms using RelA relocations this means an Addend of 4 is required. Current code ignores this addend when processing the relocation, resulting in incorrect execution. Fixed by taking the Addend into account when processing relocations to symbols found in the local or global symbol table. Tested on x86_64-linux and powerpc64-linux. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178869 91177308-0d34-0410-b5e6-96231b3b80d8
* Formatting, grammarAndrew Kaylor2013-02-201-3/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175647 91177308-0d34-0410-b5e6-96231b3b80d8
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