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* [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. llvm-svn: 187179
* 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. llvm-svn: 187120
* [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. llvm-svn: 187019
* 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. llvm-svn: 185360
* Basic support for parsing Mach-O universal binaries in LLVMObject libraryAlexey Samsonov2013-06-181-0/+1
| | | | llvm-svn: 184191
* Convert another use of sys::identifyFileType.Rafael Espindola2013-06-111-26/+28
| | | | | | No functionality change. llvm-svn: 183758
* Pass a StringRef to sys::identifyFileType.Rafael Espindola2013-06-101-3/+1
| | | | llvm-svn: 183669
* Handle (at least don't crash on) relocations with no symbols.Rafael Espindola2013-06-051-6/+11
| | | | | | Should fix the MCJIT tests on PPC. llvm-svn: 183288
* 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. llvm-svn: 183284
* 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). llvm-svn: 183147
* 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. llvm-svn: 182908
* 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. llvm-svn: 182800
* 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. llvm-svn: 182418
* Roll out r182411 and 182412 because it's still broken.Filip Pizlo2013-05-211-0/+2
| | | | llvm-svn: 182415
* 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. llvm-svn: 182411
* Roll out r182407 and r182408 because they broke builds.Filip Pizlo2013-05-211-0/+2
| | | | llvm-svn: 182409
* 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. llvm-svn: 182407
* 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. llvm-svn: 182214
* 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. llvm-svn: 182098
* 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. llvm-svn: 181502
* PowerPC: Fix unimplemented relocation on ppc64Adhemerval Zanella2013-05-061-0/+5
| | | | | | | This patch handles the R_PPC64_REL64 relocation type for powerpc64 for mcjit. llvm-svn: 181220
* 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. llvm-svn: 181167
* 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. llvm-svn: 181134
* 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. llvm-svn: 181133
* 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. llvm-svn: 181132
* 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. llvm-svn: 181131
* [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. llvm-svn: 181015
* Fix Addend computation for non external relocations on Macho.Rafael Espindola2013-04-301-28/+10
| | | | llvm-svn: 180790
* 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. llvm-svn: 180767
* 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). llvm-svn: 180736
* 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. llvm-svn: 180733
* Update the documentation.Rafael Espindola2013-04-291-5/+1
| | | | llvm-svn: 180725
* Use a RelocationRef instead of a relocation_iterator.Rafael Espindola2013-04-296-13/+13
| | | | | | No functionality change. llvm-svn: 180723
* Propagate relocation info to resolveRelocation.Rafael Espindola2013-04-296-41/+58
| | | | | | This gets most of the MCJITs tests passing with MachO. llvm-svn: 180716
* 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. llvm-svn: 180711
* 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. llvm-svn: 180624
* 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. llvm-svn: 179726
* 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. llvm-svn: 179527
* 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. llvm-svn: 178869
* Formatting, grammarAndrew Kaylor2013-02-201-3/+2
| | | | llvm-svn: 175647
* Adding support for absolute relocations. This occurs in ELF files when a ↵Andrew Kaylor2013-02-201-7/+14
| | | | | | relocation is given with no name and an undefined section. The relocation is applied with an address of zero. llvm-svn: 175643
* RuntimeDyld: Fix errant fallthrough.Jim Grosbach2013-01-311-0/+1
| | | | llvm-svn: 174078
* Add support for applying in-memory relocations to the .debug_line section ↵Andrew Kaylor2013-01-251-0/+2
| | | | | | and, in the case of ELF files, using symbol addresses when available for relocations to the .debug_info section. Also extending the llvm-rtdyld tool to add the ability to dump line number information for testing purposes. llvm-svn: 173517
* [Object][ELF] Simplify ELFObjectFile by using ELFType.Michael J. Spencer2013-01-151-41/+41
| | | | | | | | | | | | | This simplifies the usage and implementation of ELFObjectFile by using ELFType to replace: <endianness target_endianness, std::size_t max_alignment, bool is64Bits> This does complicate the base ELF types as they must now use template template parameters to partially specialize for the 32 and 64bit cases. However these are only defined once. llvm-svn: 172515
* PowerPC: EH adjustmentsAdhemerval Zanella2013-01-091-1/+8
| | | | | | | | | This patch adjust the r171506 to make all DWARF enconding pc-relative for PPC64. It also adds the R_PPC64_REL32 relocation handling in MCJIT (since the eh_frame will not generate PIC-relative relocation) and also adds the emission of stubs created by the TTypeEncoding. llvm-svn: 171979
* [Object][ELF] Add a maximum alignment. This is used by createELFObjectFile ↵Michael J. Spencer2013-01-041-49/+51
| | | | | | to create a properly aligned reader. llvm-svn: 171520
* PowerPC: Fix eh_frame relocation for PIC Adhemerval Zanella2013-01-041-0/+6
| | | | | | | | | This patch fixes the PPC eh_frame definitions for the personality and frame unwinding for PIC objects. It makes PIC build correctly creates relative relocations in the '.rela.eh_frame' segments and thus avoiding a text relocation that generates a DT_TEXTREL segments in link phase. llvm-svn: 171506
* Removed "static" from "__jit_debug_descriptor" because "static" adds C++ ↵Elena Demikhovsky2012-12-241-1/+1
| | | | | | mangling prefix to this symbol. llvm-svn: 171025
* Query section for whether it should be executable.Tim Northover2012-12-171-5/+3
| | | | llvm-svn: 170350
* Sort includes for all of the .h files under the 'lib' tree. These wereChandler Carruth2012-12-043-5/+5
| | | | | | | | | | missed in the first pass because the script didn't yet handle include guards. Note that the script is now able to handle all of these headers without manual edits. =] llvm-svn: 169224
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