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* Merging r344516:Tom Stellard2018-11-161-0/+17
| | | | | | | | | | | | | | | | | | | | | ------------------------------------------------------------------------ r344516 | abeserminji | 2018-10-15 07:39:12 -0700 (Mon, 15 Oct 2018) | 12 lines [mips][micromips] Fix overlaping FDEs error When compiling static executable for micromips, CFI symbols are incorrectly labeled as MICROMIPS, which cause ".eh_frame_hdr refers to overlapping FDEs." error. This patch does not label CFI symbols as MICROMIPS, and FDEs do not overlap anymore. This patch also exposes another bug, which is fixed here: https://reviews.llvm.org/D52985 Differential Revision: https://reviews.llvm.org/D52987 ------------------------------------------------------------------------ llvm-svn: 347023
* [mips] Replace custom parsing logic for data directives by the ↵Simon Atanasyan2018-07-251-0/+5
| | | | | | | | | | | | | | | | | | | | | `addAliasForDirective` The target independent AsmParser doesn't recognise .hword, .word, .dword which are required for Mips. Currently MipsAsmParser recognises these through dispatch to MipsAsmParser::parseDataDirective. This contains equivalent logic to AsmParser::parseDirectiveValue. This patch allows reuse of AsmParser::parseDirectiveValue by making use of addAliasForDirective to support .hword, .word and .dword. Original patch provided by Alex Bradbury at D47001 was modified to fix handling of microMIPS symbols. The `AsmParser::parseDirectiveValue` calls either `EmitIntValue` or `EmitValue`. In this patch we override `EmitIntValue` in the `MipsELFStreamer` to clear a pending set of microMIPS symbols. Differential revision: https://reviews.llvm.org/D49539 llvm-svn: 337893
* MC: Change the streamer ctors to take an object writer instead of a stream. ↵Peter Collingbourne2018-05-181-4/+7
| | | | | | | | | | | | | | NFCI. The idea is that a client that wants split dwarf would create a specific kind of object writer that creates two files, and use it to create the streamer. Part of PR37466. Differential Revision: https://reviews.llvm.org/D47050 llvm-svn: 332749
* [MC] Have MCObjectStreamer take its MCAsmBackend argument via unique_ptr.Lang Hames2017-10-111-8/+9
| | | | | | | | MCObjectStreamer owns its MCCodeEmitter -- this fixes the types to reflect that, and allows us to remove the last instance of MCObjectStreamer's weird "holding ownership via someone else's reference" trick. llvm-svn: 315531
* [MC] Have MCObjectStreamer take its MCAsmBackend argument via unique_ptr.Lang Hames2017-10-111-2/+12
| | | | | | | | MCObjectStreamer owns its MCAsmBackend -- this fixes the types to reflect that, and allows us to remove another instance of MCObjectStreamer's weird "holding ownership via someone else's reference" trick. llvm-svn: 315410
* 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
* This patch closes PR#32216: Better testing of schedule model instruction ↵Andrew V. Tischenko2017-04-141-1/+1
| | | | | | | | latencies/throughputs. The details are here: https://reviews.llvm.org/D30941 llvm-svn: 300311
* Move some error handling down to MCStreamer.Rafael Espindola2017-02-101-1/+1
| | | | | | | | | This makes sure we get the same redefinition rules regardless of who is printing (asm parser, codegen) and to what (asm, obj). This fixes an unintentional regression in r293936. llvm-svn: 294752
* [Mips] Fix some Include What You Use warnings; other minor fixes (NFC).Eugene Zelenko2017-02-031-0/+4
| | | | | | This is preparation to reduce MCExpr.h dependencies. llvm-svn: 294069
* Cleanup places that passed SMLoc by const reference to pass it by value ↵Craig Topper2015-09-201-1/+1
| | | | | | instead. NFC llvm-svn: 248135
* Bring back r239006 with a fix.Rafael Espindola2015-06-041-4/+1
| | | | | | | | | | | | | | | | | | | The fix is just that getOther had not been updated for packing the st_other values in fewer bits and could return spurious values: - unsigned Other = (getFlags() & (0x3f << ELF_STO_Shift)) >> ELF_STO_Shift; + unsigned Other = (getFlags() & (0x7 << ELF_STO_Shift)) >> ELF_STO_Shift; Original message: Pack the MCSymbolELF bit fields into MCSymbol's Flags. This reduces MCSymolfELF from 64 bytes to 56 bytes on x86_64. While at it, also make getOther/setOther easier to use by accepting unshifted STO_* values. llvm-svn: 239012
* Revert "Pack the MCSymbolELF bit fields into MCSymbol's Flags."Rafael Espindola2015-06-041-1/+4
| | | | | | | | This reverts commit r239006. I am debugging the powerpc failures. llvm-svn: 239010
* Pack the MCSymbolELF bit fields into MCSymbol's Flags.Rafael Espindola2015-06-041-4/+1
| | | | | | | | | This reduces MCSymolfELF from 64 bytes to 56 bytes on x86_64. While at it, also make getOther/setOther easier to use by accepting unshifted STO_* values. llvm-svn: 239006
* Remove getOrCreateSymbolData. There is no MCSymbolData anymore.Rafael Espindola2015-06-031-1/+1
| | | | llvm-svn: 238952
* Merge MCELF.h into MCSymbolELF.h.Rafael Espindola2015-06-021-3/+4
| | | | | | | Now that we have a dedicated type for ELF symbol, these helper functions can become member function of MCSymbolELF. llvm-svn: 238864
* Pass MCSymbols to the helper functions in MCELF.h.Rafael Espindola2015-05-291-2/+2
| | | | llvm-svn: 238596
* Move alignment from MCSectionData to MCSection.Rafael Espindola2015-05-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | This starts merging MCSection and MCSectionData. There are a few issues with the current split between MCSection and MCSectionData. * It optimizes the the not as important case. We want the production of .o files to be really fast, but the split puts the information used for .o emission in a separate data structure. * The ELF/COFF/MachO hierarchy is not represented in MCSectionData, leading to some ad-hoc ways to represent the various flags. * It makes it harder to remember where each item is. The attached patch starts merging the two by moving the alignment from MCSectionData to MCSection. Most of the patch is actually just dropping 'const', since MCSectionData is mutable, but MCSection was not. llvm-svn: 237936
* [mips] [IAS] Add support for the .insn directive.Toma Tabacu2015-04-161-2/+8
| | | | | | | | | | | | | | | | | Summary: This assembler directive marks the current label as an instruction label in microMIPS and MIPS16. This initial implementation works only for microMIPS. Reviewers: dsanders Reviewed By: dsanders Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D8006 llvm-svn: 235084
* Use raw_pwrite_stream in the object writer/streamer.Rafael Espindola2015-04-141-1/+2
| | | | | | The ELF object writer will take advantage of that in the next commit. llvm-svn: 234950
* Split the object streamer callback in one per file format.Rafael Espindola2015-03-191-7/+5
| | | | | | | | | | | | | There are two main advantages to doing this * Targets that only need to handle one of the formats specially don't have to worry about the others. For example, x86 now only registers a constructor for the COFF streamer. * Changes to the arguments passed to one format constructor will not impact the other formats. llvm-svn: 232699
* [mips][microMIPS] Mark symbols as microMIPS if necessaryZoran Jovanovic2014-11-051-0/+35
| | | | | | Differential Revision: http://reviews.llvm.org/D6039 llvm-svn: 221355
* Simplify handling of --noexecstack by using getNonexecutableStackSection.Rafael Espindola2014-10-151-2/+2
| | | | llvm-svn: 219799
* Make some helpers static or move into the llvm namespace.Benjamin Kramer2014-09-031-0/+1
| | | | llvm-svn: 217077
* [mips] Add MipsOptionRecord abstraction and use it to implement ↵Daniel Sanders2014-07-211-0/+24
| | | | | | | | | | | | | | | .reginfo/.MIPS.options This abstraction allows us to support the various records that can be placed in the .MIPS.options section in the future. We currently use it to record register usage information (the ODK_REGINFO record in our ELF64 spec). Each .MIPS.options record should subclass MipsOptionRecord and provide an implementation of EmitMipsOptionRecord. Patch by Matheus Almeida and Toma Tabacu llvm-svn: 213522
* [mips] Implement custom MCELFStreamer.Matheus Almeida2014-03-271-0/+19
| | | | | | | | | | | | | This allows us to insert some hooks before emitting data into an actual object file. For example, we can capture the register usage for a translation unit by overriding the EmitInstruction method. The register usage information is needed to generate .reginfo and .Mips.options ELF sections. No functional changes. Differential Revision: http://llvm-reviews.chandlerc.com/D3129 llvm-svn: 204917
* Add a MCTargetStreamer interface.Rafael Espindola2013-10-081-55/+0
| | | | | | | | | | | | | This patch fixes an old FIXME by creating a MCTargetStreamer interface and moving the target specific functions for ARM, Mips and PPC to it. The ARM streamer is still declared in a common place because it is used from lib/CodeGen/ARMException.cpp, but the Mips and PPC are completely hidden in the corresponding Target directories. I will send an email to llvmdev with instructions on how to use this. llvm-svn: 192181
* Remove some really nasty uses of hasRawTextSupport.Rafael Espindola2013-10-051-72/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When MC was first added, targets could use hasRawTextSupport to keep features working before they were added to the MC interface. The design goal of MC is to provide an uniform api for printing assembly and object files. Short of relaxations and other corner cases, a object file is just another representation of the assembly. It was never the intention that targets would keep doing things like if (hasRawTextSupport()) Set flags in one way. else Set flags in another way. When they do that they create two code paths and the object file is no longer just another representation of the assembly. This also then requires testing with llc -filetype=obj, which is extremelly brittle. This patch removes some of these hacks by replacing them with smaller ones. The ARM flag setting is trivial, so I just moved it to the constructor. For Mips, the patch adds two temporary hack directives that allow the assembly to represent the same things as the object file was already able to. The hope is that the mips developers will replace the hack directives with the same ones that gas uses and drop the -print-hack-directives flag. I will also try to implement a target streamer interface, so that we can move this out of the common code. In summary, for any new work, two rules of the thumb are * Don't use "llc -filetype=obj" in tests. * Don't add calls to hasRawTextSupport. llvm-svn: 192035
* reverting per requestJack Carter2013-10-041-19/+2
| | | | llvm-svn: 191992
* [MC][AsmParser] Hook for post assembly file processingJack Carter2013-10-041-2/+19
| | | | | | | | | | | | | | | | | | | | | This patch handles LLVM standalone assembler (llvm-mc) ELF flag setting based on input file directive processing. Mips assembly requires processing inline directives that directly and indirectly affect the output ELF header flags. This patch handles one ".abicalls". To process these directives we are following the model the code generator uses by storing state in a container as we go through processing and when we detect the end of input file processing, AsmParser is notified and we update the ELF header flags through a MipsELFStreamer method with a call from MCTargetAsmParser::emitEndOfAsmFile(MCStreamer &OutStreamer). This patch will allow other targets the same functionality. Jack llvm-svn: 191982
* Mips ELF: Mark object file as ABI compliant Jack Carter2013-06-181-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | When producing objects that are abi compliant we are marking neither the object file nor the assembly file correctly and thus generate warnings. We need to set the EF_CPIC flag in the ELF header when generating direct object. Note that the warning is only generated when compiling without PIC. When compiling with clang the warning will be suppressed by supplying: -Wa,-mno-shared -Wa,-call_nonpic Also the following directive should also be added: .option pic0 when compiling without PIC, This eliminates the need for supplying: -mno-shared -call_nonpic on the assembler command line. Patch by Douglas Gilmore llvm-svn: 184220
* ELF symbol table field st_other support, Jack Carter2013-02-191-0/+4
| | | | | | | | | | | | excluding visibility bits. Mips (o32 abi) specific e_header setting. EF_MIPS_ABI_O32 needs to be set in the ELF header flags for o32 abi output. Contributer: Reed Kotler llvm-svn: 175569
* ELF symbol table field st_other support, Jack Carter2013-02-191-1/+4
| | | | | | | | | | | | excluding visibility bits. Mips (Mips16) specific e_header setting. EF_MIPS_ARCH_ASE_M16 needs to be set in the ELF header flags for Mips16. Contributer: Reed Kotler llvm-svn: 175566
* ELF symbol table field st_other support, Jack Carter2013-02-191-1/+19
| | | | | | | | | | | excluding visibility bits. Mips (MicroMips) specific STO handling . The st_other field settig for STO_MIPS_MICROMIPS Contributer: Zoran Jovanovic llvm-svn: 175564
* This patch that sets the Mips ELF header flag for Jack Carter2013-02-051-0/+3
| | | | | | | | MicroMips architectures. Contributer: Zoran Jovanovic llvm-svn: 174360
* This patch implements runtime Mips specificJack Carter2013-01-301-0/+61
setting of ELF header e_flags. Contributer: Jack Carter llvm-svn: 173884
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