X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=tools%2Fllvm-mc%2Fllvm-mc.cpp;h=a8a3d994b506b630de2dbfbfe9da6ef8bf17a1f9;hb=d6af41b2eb87a1f822932aa19b4a9f6039de11fd;hp=c59c80a05015af456e41d43827844cf4f2337d5b;hpb=89b9372605db2ce3b0085c84089e389f7bc1fbdd;p=oota-llvm.git diff --git a/tools/llvm-mc/llvm-mc.cpp b/tools/llvm-mc/llvm-mc.cpp index c59c80a0501..a8a3d994b50 100644 --- a/tools/llvm-mc/llvm-mc.cpp +++ b/tools/llvm-mc/llvm-mc.cpp @@ -12,36 +12,33 @@ // //===----------------------------------------------------------------------===// -#include "llvm/MC/MCParser/AsmLexer.h" -#include "llvm/MC/MCParser/MCAsmLexer.h" +#include "Disassembler.h" +#include "llvm/MC/MCAsmBackend.h" +#include "llvm/MC/MCAsmInfo.h" #include "llvm/MC/MCContext.h" -#include "llvm/MC/MCCodeEmitter.h" #include "llvm/MC/MCInstPrinter.h" +#include "llvm/MC/MCInstrInfo.h" +#include "llvm/MC/MCObjectFileInfo.h" +#include "llvm/MC/MCParser/AsmLexer.h" +#include "llvm/MC/MCRegisterInfo.h" #include "llvm/MC/MCSectionMachO.h" #include "llvm/MC/MCStreamer.h" -#include "llvm/Target/TargetAsmBackend.h" -#include "llvm/Target/TargetAsmParser.h" -#include "llvm/Target/TargetData.h" -#include "llvm/Target/TargetRegistry.h" -#include "llvm/Target/SubtargetFeature.h" // FIXME. -#include "llvm/Target/TargetAsmInfo.h" // FIXME. -#include "llvm/Target/TargetLowering.h" // FIXME. -#include "llvm/Target/TargetLoweringObjectFile.h" // FIXME. -#include "llvm/Target/TargetMachine.h" // FIXME. -#include "llvm/Target/TargetSelect.h" -#include "llvm/ADT/OwningPtr.h" +#include "llvm/MC/MCSubtargetInfo.h" +#include "llvm/MC/MCTargetAsmParser.h" +#include "llvm/MC/MCTargetOptionsCommandFlags.h" #include "llvm/Support/CommandLine.h" +#include "llvm/Support/Compression.h" #include "llvm/Support/FileUtilities.h" #include "llvm/Support/FormattedStream.h" +#include "llvm/Support/Host.h" #include "llvm/Support/ManagedStatic.h" #include "llvm/Support/MemoryBuffer.h" #include "llvm/Support/PrettyStackTrace.h" +#include "llvm/Support/Signals.h" #include "llvm/Support/SourceMgr.h" +#include "llvm/Support/TargetRegistry.h" +#include "llvm/Support/TargetSelect.h" #include "llvm/Support/ToolOutputFile.h" -#include "llvm/Support/Host.h" -#include "llvm/Support/Signals.h" -#include "llvm/Support/system_error.h" -#include "Disassembler.h" using namespace llvm; static cl::opt @@ -54,6 +51,9 @@ OutputFilename("o", cl::desc("Output filename"), static cl::opt ShowEncoding("show-encoding", cl::desc("Show instruction encodings")); +static cl::opt +CompressDebugSections("compress-debug-sections", cl::desc("Compress DWARF debug sections")); + static cl::opt ShowInst("show-inst", cl::desc("Show internal instruction representation")); @@ -69,7 +69,7 @@ static cl::opt RelaxAll("mc-relax-all", cl::desc("Relax all fixups")); static cl::opt -EnableLogging("enable-api-logging", cl::desc("Enable MC API logging")); +NoExecStack("mc-no-exec-stack", cl::desc("File doesn't need an exec stack")); enum OutputFileType { OFT_Null, @@ -94,7 +94,7 @@ IncludeDirs("I", cl::desc("Directory of include files"), static cl::opt ArchName("arch", cl::desc("Target arch to assemble for, " - "see -version for available targets")); + "see -version for available targets")); static cl::opt TripleName("triple", cl::desc("Target triple to assemble for, " @@ -106,15 +106,68 @@ MCPU("mcpu", cl::value_desc("cpu-name"), cl::init("")); +static cl::list +MAttrs("mattr", + cl::CommaSeparated, + cl::desc("Target specific attributes (-mattr=help for details)"), + cl::value_desc("a1,+a2,-a3,...")); + +static cl::opt +RelocModel("relocation-model", + cl::desc("Choose relocation model"), + cl::init(Reloc::Default), + cl::values( + clEnumValN(Reloc::Default, "default", + "Target default relocation model"), + clEnumValN(Reloc::Static, "static", + "Non-relocatable code"), + clEnumValN(Reloc::PIC_, "pic", + "Fully relocatable, position independent code"), + clEnumValN(Reloc::DynamicNoPIC, "dynamic-no-pic", + "Relocatable external references, non-relocatable code"), + clEnumValEnd)); + +static cl::opt +CMModel("code-model", + cl::desc("Choose code model"), + cl::init(CodeModel::Default), + cl::values(clEnumValN(CodeModel::Default, "default", + "Target default code model"), + clEnumValN(CodeModel::Small, "small", + "Small code model"), + clEnumValN(CodeModel::Kernel, "kernel", + "Kernel code model"), + clEnumValN(CodeModel::Medium, "medium", + "Medium code model"), + clEnumValN(CodeModel::Large, "large", + "Large code model"), + clEnumValEnd)); + +static cl::opt +NoInitialTextSection("n", cl::desc("Don't assume assembly file starts " + "in the text section")); + static cl::opt -NoInitialTextSection("n", cl::desc( - "Don't assume assembly file starts in the text section")); +SaveTempLabels("L", cl::desc("Don't discard temporary labels")); + +static cl::opt +GenDwarfForAssembly("g", cl::desc("Generate dwarf debugging info for assembly " + "source files")); + +static cl::opt +DebugCompilationDir("fdebug-compilation-dir", + cl::desc("Specifies the debug info's compilation dir")); + +static cl::opt +MainFileName("main-file-name", + cl::desc("Specifies the name we should consider the input file")); enum ActionType { AC_AsLex, AC_Assemble, AC_Disassemble, - AC_EDisassemble + AC_MDisassemble, + AC_HDisassemble }; static cl::opt @@ -126,29 +179,31 @@ Action(cl::desc("Action to perform:"), "Assemble a .s file (default)"), clEnumValN(AC_Disassemble, "disassemble", "Disassemble strings of hex bytes"), - clEnumValN(AC_EDisassemble, "edis", - "Enhanced disassembly of strings of hex bytes"), + clEnumValN(AC_MDisassemble, "mdis", + "Marked up disassembly of strings of hex bytes"), + clEnumValN(AC_HDisassemble, "hdis", + "Disassemble strings of hex bytes printing " + "immediates as hex"), clEnumValEnd)); static const Target *GetTarget(const char *ProgName) { // Figure out the target triple. if (TripleName.empty()) - TripleName = sys::getHostTriple(); - if (!ArchName.empty()) { - llvm::Triple TT(TripleName); - TT.setArchName(ArchName); - TripleName = TT.str(); - } + TripleName = sys::getDefaultTargetTriple(); + Triple TheTriple(Triple::normalize(TripleName)); // Get the target specific parser. std::string Error; - const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error); - if (TheTarget) - return TheTarget; + const Target *TheTarget = TargetRegistry::lookupTarget(ArchName, TheTriple, + Error); + if (!TheTarget) { + errs() << ProgName << ": " << Error; + return 0; + } - errs() << ProgName << ": error: unable to get target for '" << TripleName - << "', see --version and --triple.\n"; - return 0; + // Update the triple name and return the found target. + TripleName = TheTriple.getTriple(); + return TheTarget; } static tool_output_file *GetOutputStream() { @@ -156,8 +211,8 @@ static tool_output_file *GetOutputStream() { OutputFilename = "-"; std::string Err; - tool_output_file *Out = new tool_output_file(OutputFilename.c_str(), Err, - raw_fd_ostream::F_Binary); + tool_output_file *Out = + new tool_output_file(OutputFilename.c_str(), Err, sys::fs::F_None); if (!Err.empty()) { errs() << Err << '\n'; delete Out; @@ -167,44 +222,37 @@ static tool_output_file *GetOutputStream() { return Out; } -static int AsLexInput(const char *ProgName) { - error_code ec; - MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFilename, ec); - if (Buffer == 0) { - errs() << ProgName << ": " << ec.message() << '\n'; - return 1; +static std::string DwarfDebugFlags; +static void setDwarfDebugFlags(int argc, char **argv) { + if (!getenv("RC_DEBUG_OPTIONS")) + return; + for (int i = 0; i < argc; i++) { + DwarfDebugFlags += argv[i]; + if (i + 1 < argc) + DwarfDebugFlags += " "; } +} - SourceMgr SrcMgr; - - // Tell SrcMgr about this buffer, which is what TGParser will pick up. - SrcMgr.AddNewSourceBuffer(Buffer, SMLoc()); - - // Record the location of the include directories so that the lexer can find - // it later. - SrcMgr.setIncludeDirs(IncludeDirs); +static std::string DwarfDebugProducer; +static void setDwarfDebugProducer(void) { + if(!getenv("DEBUG_PRODUCER")) + return; + DwarfDebugProducer += getenv("DEBUG_PRODUCER"); +} - const Target *TheTarget = GetTarget(ProgName); - if (!TheTarget) - return 1; +static int AsLexInput(SourceMgr &SrcMgr, MCAsmInfo &MAI, tool_output_file *Out) { - llvm::OwningPtr MAI(TheTarget->createAsmInfo(TripleName)); - assert(MAI && "Unable to create target asm info!"); - - AsmLexer Lexer(*MAI); + AsmLexer Lexer(MAI); Lexer.setBuffer(SrcMgr.getMemoryBuffer(0)); - OwningPtr Out(GetOutputStream()); - if (!Out) - return 1; - bool Error = false; while (Lexer.Lex().isNot(AsmToken::Eof)) { AsmToken Tok = Lexer.getTok(); switch (Tok.getKind()) { default: - SrcMgr.PrintMessage(Lexer.getLoc(), "unknown token", "warning"); + SrcMgr.PrintMessage(Lexer.getLoc(), SourceMgr::DK_Warning, + "unknown token"); Error = true; break; case AsmToken::Error: @@ -219,9 +267,6 @@ static int AsLexInput(const char *ProgName) { case AsmToken::Real: Out->os() << "real: " << Lexer.getTok().getString(); break; - case AsmToken::Register: - Out->os() << "register: " << Lexer.getTok().getRegVal(); - break; case AsmToken::String: Out->os() << "string: " << Lexer.getTok().getString(); break; @@ -270,172 +315,180 @@ static int AsLexInput(const char *ProgName) { Out->os() << "\")\n"; } - // Keep output if no errors. - if (Error == 0) Out->keep(); - return Error; } -static int AssembleInput(const char *ProgName) { +static int AssembleInput(const char *ProgName, const Target *TheTarget, + SourceMgr &SrcMgr, MCContext &Ctx, MCStreamer &Str, + MCAsmInfo &MAI, MCSubtargetInfo &STI, MCInstrInfo &MCII) { + std::unique_ptr Parser( + createMCAsmParser(SrcMgr, Ctx, Str, MAI)); + std::unique_ptr TAP( + TheTarget->createMCAsmParser(STI, *Parser, MCII, + InitMCTargetOptionsFromFlags())); + if (!TAP) { + errs() << ProgName + << ": error: this target does not support assembly parsing.\n"; + return 1; + } + + Parser->setShowParsedOperands(ShowInstOperands); + Parser->setTargetParser(*TAP.get()); + + int Res = Parser->Run(NoInitialTextSection); + + return Res; +} + +int main(int argc, char **argv) { + // Print a stack trace if we signal out. + sys::PrintStackTraceOnErrorSignal(); + PrettyStackTraceProgram X(argc, argv); + llvm_shutdown_obj Y; // Call llvm_shutdown() on exit. + + // Initialize targets and assembly printers/parsers. + llvm::InitializeAllTargetInfos(); + llvm::InitializeAllTargetMCs(); + llvm::InitializeAllAsmParsers(); + llvm::InitializeAllDisassemblers(); + + // Register the target printer for --version. + cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion); + + cl::ParseCommandLineOptions(argc, argv, "llvm machine code playground\n"); + TripleName = Triple::normalize(TripleName); + setDwarfDebugFlags(argc, argv); + + setDwarfDebugProducer(); + + const char *ProgName = argv[0]; const Target *TheTarget = GetTarget(ProgName); if (!TheTarget) return 1; - error_code ec; - MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFilename, ec); - if (Buffer == 0) { + std::unique_ptr BufferPtr; + if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputFilename, BufferPtr)) { errs() << ProgName << ": " << ec.message() << '\n'; return 1; } - + MemoryBuffer *Buffer = BufferPtr.release(); + SourceMgr SrcMgr; - + // Tell SrcMgr about this buffer, which is what the parser will pick up. SrcMgr.AddNewSourceBuffer(Buffer, SMLoc()); - + // Record the location of the include directories so that the lexer can find // it later. SrcMgr.setIncludeDirs(IncludeDirs); - - - llvm::OwningPtr MAI(TheTarget->createAsmInfo(TripleName)); + + std::unique_ptr MRI(TheTarget->createMCRegInfo(TripleName)); + assert(MRI && "Unable to create target register info!"); + + std::unique_ptr MAI(TheTarget->createMCAsmInfo(*MRI, TripleName)); assert(MAI && "Unable to create target asm info!"); - + + if (CompressDebugSections) { + if (!zlib::isAvailable()) { + errs() << ProgName << ": build tools with zlib to enable -compress-debug-sections"; + return 1; + } + MAI->setCompressDebugSections(true); + } + + // FIXME: This is not pretty. MCContext has a ptr to MCObjectFileInfo and + // MCObjectFileInfo needs a MCContext reference in order to initialize itself. + std::unique_ptr MOFI(new MCObjectFileInfo()); + MCContext Ctx(MAI.get(), MRI.get(), MOFI.get(), &SrcMgr); + MOFI->InitMCObjectFileInfo(TripleName, RelocModel, CMModel, Ctx); + + if (SaveTempLabels) + Ctx.setAllowTemporaryLabels(false); + + Ctx.setGenDwarfForAssembly(GenDwarfForAssembly); + if (!DwarfDebugFlags.empty()) + Ctx.setDwarfDebugFlags(StringRef(DwarfDebugFlags)); + if (!DwarfDebugProducer.empty()) + Ctx.setDwarfDebugProducer(StringRef(DwarfDebugProducer)); + if (!DebugCompilationDir.empty()) + Ctx.setCompilationDir(DebugCompilationDir); + if (!MainFileName.empty()) + Ctx.setMainFileName(MainFileName); + // Package up features to be passed to target/subtarget std::string FeaturesStr; - if (MCPU.size()) { + if (MAttrs.size()) { SubtargetFeatures Features; - Features.setCPU(MCPU); + for (unsigned i = 0; i != MAttrs.size(); ++i) + Features.AddFeature(MAttrs[i]); FeaturesStr = Features.getString(); } - // FIXME: We shouldn't need to do this (and link in codegen). - // When we split this out, we should do it in a way that makes - // it straightforward to switch subtargets on the fly (.e.g, - // the .cpu and .code16 directives). - OwningPtr TM(TheTarget->createTargetMachine(TripleName, - FeaturesStr)); - - if (!TM) { - errs() << ProgName << ": error: could not create target for triple '" - << TripleName << "'.\n"; - return 1; - } - - const TargetAsmInfo *tai = new TargetAsmInfo(*TM); - MCContext Ctx(*MAI, tai); - - OwningPtr Out(GetOutputStream()); + std::unique_ptr Out(GetOutputStream()); if (!Out) return 1; formatted_raw_ostream FOS(Out->os()); - OwningPtr Str; + std::unique_ptr Str; - const TargetLoweringObjectFile &TLOF = - TM->getTargetLowering()->getObjFileLowering(); - const_cast(TLOF).Initialize(Ctx, *TM); + std::unique_ptr MCII(TheTarget->createMCInstrInfo()); + std::unique_ptr STI( + TheTarget->createMCSubtargetInfo(TripleName, MCPU, FeaturesStr)); + MCInstPrinter *IP = NULL; if (FileType == OFT_AssemblyFile) { - MCInstPrinter *IP = - TheTarget->createMCInstPrinter(OutputAsmVariant, *MAI); + IP = + TheTarget->createMCInstPrinter(OutputAsmVariant, *MAI, *MCII, *MRI, *STI); MCCodeEmitter *CE = 0; - if (ShowEncoding) - CE = TheTarget->createCodeEmitter(*TM, Ctx); - Str.reset(TheTarget->createAsmStreamer(Ctx, FOS, /*asmverbose*/true, - /*useLoc*/ true, IP, CE, ShowInst)); + MCAsmBackend *MAB = 0; + if (ShowEncoding) { + CE = TheTarget->createMCCodeEmitter(*MCII, *MRI, *STI, Ctx); + MAB = TheTarget->createMCAsmBackend(*MRI, TripleName, MCPU); + } + Str.reset(TheTarget->createAsmStreamer(Ctx, FOS, /*asmverbose*/ true, + /*UseCFI*/ true, + /*useDwarfDirectory*/ + true, IP, CE, MAB, ShowInst)); + } else if (FileType == OFT_Null) { Str.reset(createNullStreamer(Ctx)); } else { assert(FileType == OFT_ObjectFile && "Invalid file type!"); - MCCodeEmitter *CE = TheTarget->createCodeEmitter(*TM, Ctx); - TargetAsmBackend *TAB = TheTarget->createAsmBackend(TripleName); - Str.reset(TheTarget->createObjectStreamer(TripleName, Ctx, *TAB, - FOS, CE, RelaxAll)); - } - - if (EnableLogging) { - Str.reset(createLoggingStreamer(Str.take(), errs())); + MCCodeEmitter *CE = TheTarget->createMCCodeEmitter(*MCII, *MRI, *STI, Ctx); + MCAsmBackend *MAB = TheTarget->createMCAsmBackend(*MRI, TripleName, MCPU); + Str.reset(TheTarget->createMCObjectStreamer(TripleName, Ctx, *MAB, + FOS, CE, *STI, RelaxAll, + NoExecStack)); } - OwningPtr Parser(createMCAsmParser(*TheTarget, SrcMgr, Ctx, - *Str.get(), *MAI)); - OwningPtr TAP(TheTarget->createAsmParser(*Parser, *TM)); - if (!TAP) { - errs() << ProgName - << ": error: this target does not support assembly parsing.\n"; - return 1; - } - - Parser->setShowParsedOperands(ShowInstOperands); - Parser->setTargetParser(*TAP.get()); - - int Res = Parser->Run(NoInitialTextSection); - - // Keep output if no errors. - if (Res == 0) Out->keep(); - - return Res; -} - -static int DisassembleInput(const char *ProgName, bool Enhanced) { - const Target *TheTarget = GetTarget(ProgName); - if (!TheTarget) - return 0; - - error_code ec; - MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFilename, ec); - if (Buffer == 0) { - errs() << ProgName << ": " << ec.message() << '\n'; - return 1; - } - - OwningPtr Out(GetOutputStream()); - if (!Out) - return 1; - - int Res; - if (Enhanced) - Res = Disassembler::disassembleEnhanced(TripleName, *Buffer, Out->os()); - else - Res = Disassembler::disassemble(*TheTarget, TripleName, *Buffer, Out->os()); - - // Keep output if no errors. - if (Res == 0) Out->keep(); - - return Res; -} - - -int main(int argc, char **argv) { - // Print a stack trace if we signal out. - sys::PrintStackTraceOnErrorSignal(); - PrettyStackTraceProgram X(argc, argv); - llvm_shutdown_obj Y; // Call llvm_shutdown() on exit. - - // Initialize targets and assembly printers/parsers. - llvm::InitializeAllTargetInfos(); - // FIXME: We shouldn't need to initialize the Target(Machine)s. - llvm::InitializeAllTargets(); - llvm::InitializeAllAsmPrinters(); - llvm::InitializeAllAsmParsers(); - llvm::InitializeAllDisassemblers(); - - cl::ParseCommandLineOptions(argc, argv, "llvm machine code playground\n"); - TripleName = Triple::normalize(TripleName); - + int Res = 1; + bool disassemble = false; switch (Action) { - default: case AC_AsLex: - return AsLexInput(argv[0]); + Res = AsLexInput(SrcMgr, *MAI, Out.get()); + break; case AC_Assemble: - return AssembleInput(argv[0]); + Res = AssembleInput(ProgName, TheTarget, SrcMgr, Ctx, *Str, *MAI, *STI, *MCII); + break; + case AC_MDisassemble: + assert(IP && "Expected assembly output"); + IP->setUseMarkup(1); + disassemble = true; + break; + case AC_HDisassemble: + assert(IP && "Expected assembly output"); + IP->setPrintImmHex(1); + disassemble = true; + break; case AC_Disassemble: - return DisassembleInput(argv[0], false); - case AC_EDisassemble: - return DisassembleInput(argv[0], true); + disassemble = true; + break; } - - return 0; -} + if (disassemble) + Res = Disassembler::disassemble(*TheTarget, TripleName, *STI, *Str, + *Buffer, SrcMgr, Out->os()); + // Keep output if no errors. + if (Res == 0) Out->keep(); + return Res; +}