1//===-- llvm-mc.cpp - Machine Code Hacking Driver -------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This utility is a simple driver that allows command line hacking on machine 11// code. 12// 13//===----------------------------------------------------------------------===// 14 15#include "llvm/MC/MCParser/AsmLexer.h" 16#include "llvm/MC/MCParser/MCAsmLexer.h" 17#include "llvm/MC/MCAsmBackend.h" 18#include "llvm/MC/MCAsmInfo.h" 19#include "llvm/MC/MCContext.h" 20#include "llvm/MC/MCCodeEmitter.h" 21#include "llvm/MC/MCInstPrinter.h" 22#include "llvm/MC/MCInstrInfo.h" 23#include "llvm/MC/MCObjectFileInfo.h" 24#include "llvm/MC/MCRegisterInfo.h" 25#include "llvm/MC/MCSectionMachO.h" 26#include "llvm/MC/MCStreamer.h" 27#include "llvm/MC/MCSubtargetInfo.h" 28#include "llvm/MC/MCTargetAsmParser.h" 29#include "llvm/MC/SubtargetFeature.h" 30#include "llvm/ADT/OwningPtr.h" 31#include "llvm/Support/CommandLine.h" 32#include "llvm/Support/FileUtilities.h" 33#include "llvm/Support/FormattedStream.h" 34#include "llvm/Support/ManagedStatic.h" 35#include "llvm/Support/MemoryBuffer.h" 36#include "llvm/Support/PrettyStackTrace.h" 37#include "llvm/Support/SourceMgr.h" 38#include "llvm/Support/ToolOutputFile.h" 39#include "llvm/Support/Host.h" 40#include "llvm/Support/Signals.h" 41#include "llvm/Support/TargetRegistry.h" 42#include "llvm/Support/TargetSelect.h" 43#include "llvm/Support/system_error.h" 44#include "Disassembler.h" 45using namespace llvm; 46 47static cl::opt<std::string> 48InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-")); 49 50static cl::opt<std::string> 51OutputFilename("o", cl::desc("Output filename"), 52 cl::value_desc("filename")); 53 54static cl::opt<bool> 55ShowEncoding("show-encoding", cl::desc("Show instruction encodings")); 56 57static cl::opt<bool> 58ShowInst("show-inst", cl::desc("Show internal instruction representation")); 59 60static cl::opt<bool> 61ShowInstOperands("show-inst-operands", 62 cl::desc("Show instructions operands as parsed")); 63 64static cl::opt<unsigned> 65OutputAsmVariant("output-asm-variant", 66 cl::desc("Syntax variant to use for output printing")); 67 68static cl::opt<bool> 69RelaxAll("mc-relax-all", cl::desc("Relax all fixups")); 70 71static cl::opt<bool> 72NoExecStack("mc-no-exec-stack", cl::desc("File doesn't need an exec stack")); 73 74enum OutputFileType { 75 OFT_Null, 76 OFT_AssemblyFile, 77 OFT_ObjectFile 78}; 79static cl::opt<OutputFileType> 80FileType("filetype", cl::init(OFT_AssemblyFile), 81 cl::desc("Choose an output file type:"), 82 cl::values( 83 clEnumValN(OFT_AssemblyFile, "asm", 84 "Emit an assembly ('.s') file"), 85 clEnumValN(OFT_Null, "null", 86 "Don't emit anything (for timing purposes)"), 87 clEnumValN(OFT_ObjectFile, "obj", 88 "Emit a native object ('.o') file"), 89 clEnumValEnd)); 90 91static cl::list<std::string> 92IncludeDirs("I", cl::desc("Directory of include files"), 93 cl::value_desc("directory"), cl::Prefix); 94 95static cl::opt<std::string> 96ArchName("arch", cl::desc("Target arch to assemble for, " 97 "see -version for available targets")); 98 99static cl::opt<std::string> 100TripleName("triple", cl::desc("Target triple to assemble for, " 101 "see -version for available targets")); 102 103static cl::opt<std::string> 104MCPU("mcpu", 105 cl::desc("Target a specific cpu type (-mcpu=help for details)"), 106 cl::value_desc("cpu-name"), 107 cl::init("")); 108 109static cl::list<std::string> 110MAttrs("mattr", 111 cl::CommaSeparated, 112 cl::desc("Target specific attributes (-mattr=help for details)"), 113 cl::value_desc("a1,+a2,-a3,...")); 114 115static cl::opt<Reloc::Model> 116RelocModel("relocation-model", 117 cl::desc("Choose relocation model"), 118 cl::init(Reloc::Default), 119 cl::values( 120 clEnumValN(Reloc::Default, "default", 121 "Target default relocation model"), 122 clEnumValN(Reloc::Static, "static", 123 "Non-relocatable code"), 124 clEnumValN(Reloc::PIC_, "pic", 125 "Fully relocatable, position independent code"), 126 clEnumValN(Reloc::DynamicNoPIC, "dynamic-no-pic", 127 "Relocatable external references, non-relocatable code"), 128 clEnumValEnd)); 129 130static cl::opt<llvm::CodeModel::Model> 131CMModel("code-model", 132 cl::desc("Choose code model"), 133 cl::init(CodeModel::Default), 134 cl::values(clEnumValN(CodeModel::Default, "default", 135 "Target default code model"), 136 clEnumValN(CodeModel::Small, "small", 137 "Small code model"), 138 clEnumValN(CodeModel::Kernel, "kernel", 139 "Kernel code model"), 140 clEnumValN(CodeModel::Medium, "medium", 141 "Medium code model"), 142 clEnumValN(CodeModel::Large, "large", 143 "Large code model"), 144 clEnumValEnd)); 145 146static cl::opt<bool> 147NoInitialTextSection("n", cl::desc("Don't assume assembly file starts " 148 "in the text section")); 149 150static cl::opt<bool> 151SaveTempLabels("L", cl::desc("Don't discard temporary labels")); 152 153static cl::opt<bool> 154GenDwarfForAssembly("g", cl::desc("Generate dwarf debugging info for assembly " 155 "source files")); 156 157enum ActionType { 158 AC_AsLex, 159 AC_Assemble, 160 AC_Disassemble, 161 AC_EDisassemble 162}; 163 164static cl::opt<ActionType> 165Action(cl::desc("Action to perform:"), 166 cl::init(AC_Assemble), 167 cl::values(clEnumValN(AC_AsLex, "as-lex", 168 "Lex tokens from a .s file"), 169 clEnumValN(AC_Assemble, "assemble", 170 "Assemble a .s file (default)"), 171 clEnumValN(AC_Disassemble, "disassemble", 172 "Disassemble strings of hex bytes"), 173 clEnumValN(AC_EDisassemble, "edis", 174 "Enhanced disassembly of strings of hex bytes"), 175 clEnumValEnd)); 176 177static const Target *GetTarget(const char *ProgName) { 178 // Figure out the target triple. 179 if (TripleName.empty()) 180 TripleName = sys::getDefaultTargetTriple(); 181 Triple TheTriple(Triple::normalize(TripleName)); 182 183 // Get the target specific parser. 184 std::string Error; 185 const Target *TheTarget = TargetRegistry::lookupTarget(ArchName, TheTriple, 186 Error); 187 if (!TheTarget) { 188 errs() << ProgName << ": " << Error; 189 return 0; 190 } 191 192 // Update the triple name and return the found target. 193 TripleName = TheTriple.getTriple(); 194 return TheTarget; 195} 196 197static tool_output_file *GetOutputStream() { 198 if (OutputFilename == "") 199 OutputFilename = "-"; 200 201 std::string Err; 202 tool_output_file *Out = new tool_output_file(OutputFilename.c_str(), Err, 203 raw_fd_ostream::F_Binary); 204 if (!Err.empty()) { 205 errs() << Err << '\n'; 206 delete Out; 207 return 0; 208 } 209 210 return Out; 211} 212 213static std::string DwarfDebugFlags; 214static void setDwarfDebugFlags(int argc, char **argv) { 215 if (!getenv("RC_DEBUG_OPTIONS")) 216 return; 217 for (int i = 0; i < argc; i++) { 218 DwarfDebugFlags += argv[i]; 219 if (i + 1 < argc) 220 DwarfDebugFlags += " "; 221 } 222} 223 224static int AsLexInput(SourceMgr &SrcMgr, MCAsmInfo &MAI, tool_output_file *Out) { 225 226 AsmLexer Lexer(MAI); 227 Lexer.setBuffer(SrcMgr.getMemoryBuffer(0)); 228 229 bool Error = false; 230 while (Lexer.Lex().isNot(AsmToken::Eof)) { 231 AsmToken Tok = Lexer.getTok(); 232 233 switch (Tok.getKind()) { 234 default: 235 SrcMgr.PrintMessage(Lexer.getLoc(), SourceMgr::DK_Warning, 236 "unknown token"); 237 Error = true; 238 break; 239 case AsmToken::Error: 240 Error = true; // error already printed. 241 break; 242 case AsmToken::Identifier: 243 Out->os() << "identifier: " << Lexer.getTok().getString(); 244 break; 245 case AsmToken::Integer: 246 Out->os() << "int: " << Lexer.getTok().getString(); 247 break; 248 case AsmToken::Real: 249 Out->os() << "real: " << Lexer.getTok().getString(); 250 break; 251 case AsmToken::Register: 252 Out->os() << "register: " << Lexer.getTok().getRegVal(); 253 break; 254 case AsmToken::String: 255 Out->os() << "string: " << Lexer.getTok().getString(); 256 break; 257 258 case AsmToken::Amp: Out->os() << "Amp"; break; 259 case AsmToken::AmpAmp: Out->os() << "AmpAmp"; break; 260 case AsmToken::At: Out->os() << "At"; break; 261 case AsmToken::Caret: Out->os() << "Caret"; break; 262 case AsmToken::Colon: Out->os() << "Colon"; break; 263 case AsmToken::Comma: Out->os() << "Comma"; break; 264 case AsmToken::Dollar: Out->os() << "Dollar"; break; 265 case AsmToken::Dot: Out->os() << "Dot"; break; 266 case AsmToken::EndOfStatement: Out->os() << "EndOfStatement"; break; 267 case AsmToken::Eof: Out->os() << "Eof"; break; 268 case AsmToken::Equal: Out->os() << "Equal"; break; 269 case AsmToken::EqualEqual: Out->os() << "EqualEqual"; break; 270 case AsmToken::Exclaim: Out->os() << "Exclaim"; break; 271 case AsmToken::ExclaimEqual: Out->os() << "ExclaimEqual"; break; 272 case AsmToken::Greater: Out->os() << "Greater"; break; 273 case AsmToken::GreaterEqual: Out->os() << "GreaterEqual"; break; 274 case AsmToken::GreaterGreater: Out->os() << "GreaterGreater"; break; 275 case AsmToken::Hash: Out->os() << "Hash"; break; 276 case AsmToken::LBrac: Out->os() << "LBrac"; break; 277 case AsmToken::LCurly: Out->os() << "LCurly"; break; 278 case AsmToken::LParen: Out->os() << "LParen"; break; 279 case AsmToken::Less: Out->os() << "Less"; break; 280 case AsmToken::LessEqual: Out->os() << "LessEqual"; break; 281 case AsmToken::LessGreater: Out->os() << "LessGreater"; break; 282 case AsmToken::LessLess: Out->os() << "LessLess"; break; 283 case AsmToken::Minus: Out->os() << "Minus"; break; 284 case AsmToken::Percent: Out->os() << "Percent"; break; 285 case AsmToken::Pipe: Out->os() << "Pipe"; break; 286 case AsmToken::PipePipe: Out->os() << "PipePipe"; break; 287 case AsmToken::Plus: Out->os() << "Plus"; break; 288 case AsmToken::RBrac: Out->os() << "RBrac"; break; 289 case AsmToken::RCurly: Out->os() << "RCurly"; break; 290 case AsmToken::RParen: Out->os() << "RParen"; break; 291 case AsmToken::Slash: Out->os() << "Slash"; break; 292 case AsmToken::Star: Out->os() << "Star"; break; 293 case AsmToken::Tilde: Out->os() << "Tilde"; break; 294 } 295 296 // Print the token string. 297 Out->os() << " (\""; 298 Out->os().write_escaped(Tok.getString()); 299 Out->os() << "\")\n"; 300 } 301 302 return Error; 303} 304 305static int AssembleInput(const char *ProgName, const Target *TheTarget, 306 SourceMgr &SrcMgr, MCContext &Ctx, MCStreamer &Str, 307 MCAsmInfo &MAI, MCSubtargetInfo &STI) { 308 OwningPtr<MCAsmParser> Parser(createMCAsmParser(SrcMgr, Ctx, 309 Str, MAI)); 310 OwningPtr<MCTargetAsmParser> TAP(TheTarget->createMCAsmParser(STI, *Parser)); 311 if (!TAP) { 312 errs() << ProgName 313 << ": error: this target does not support assembly parsing.\n"; 314 return 1; 315 } 316 317 Parser->setShowParsedOperands(ShowInstOperands); 318 Parser->setTargetParser(*TAP.get()); 319 320 int Res = Parser->Run(NoInitialTextSection); 321 322 return Res; 323} 324 325int main(int argc, char **argv) { 326 // Print a stack trace if we signal out. 327 sys::PrintStackTraceOnErrorSignal(); 328 PrettyStackTraceProgram X(argc, argv); 329 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit. 330 331 // Initialize targets and assembly printers/parsers. 332 llvm::InitializeAllTargetInfos(); 333 llvm::InitializeAllTargetMCs(); 334 llvm::InitializeAllAsmParsers(); 335 llvm::InitializeAllDisassemblers(); 336 337 // Register the target printer for --version. 338 cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion); 339 340 cl::ParseCommandLineOptions(argc, argv, "llvm machine code playground\n"); 341 TripleName = Triple::normalize(TripleName); 342 setDwarfDebugFlags(argc, argv); 343 344 const char *ProgName = argv[0]; 345 const Target *TheTarget = GetTarget(ProgName); 346 if (!TheTarget) 347 return 1; 348 349 OwningPtr<MemoryBuffer> BufferPtr; 350 if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputFilename, BufferPtr)) { 351 errs() << ProgName << ": " << ec.message() << '\n'; 352 return 1; 353 } 354 MemoryBuffer *Buffer = BufferPtr.take(); 355 356 SourceMgr SrcMgr; 357 358 // Tell SrcMgr about this buffer, which is what the parser will pick up. 359 SrcMgr.AddNewSourceBuffer(Buffer, SMLoc()); 360 361 // Record the location of the include directories so that the lexer can find 362 // it later. 363 SrcMgr.setIncludeDirs(IncludeDirs); 364 365 366 llvm::OwningPtr<MCAsmInfo> MAI(TheTarget->createMCAsmInfo(TripleName)); 367 assert(MAI && "Unable to create target asm info!"); 368 369 llvm::OwningPtr<MCRegisterInfo> MRI(TheTarget->createMCRegInfo(TripleName)); 370 assert(MRI && "Unable to create target register info!"); 371 372 // FIXME: This is not pretty. MCContext has a ptr to MCObjectFileInfo and 373 // MCObjectFileInfo needs a MCContext reference in order to initialize itself. 374 OwningPtr<MCObjectFileInfo> MOFI(new MCObjectFileInfo()); 375 MCContext Ctx(*MAI, *MRI, MOFI.get(), &SrcMgr); 376 MOFI->InitMCObjectFileInfo(TripleName, RelocModel, CMModel, Ctx); 377 378 if (SaveTempLabels) 379 Ctx.setAllowTemporaryLabels(false); 380 381 Ctx.setGenDwarfForAssembly(GenDwarfForAssembly); 382 if (!DwarfDebugFlags.empty()) 383 Ctx.setDwarfDebugFlags(StringRef(DwarfDebugFlags)); 384 385 // Package up features to be passed to target/subtarget 386 std::string FeaturesStr; 387 if (MAttrs.size()) { 388 SubtargetFeatures Features; 389 for (unsigned i = 0; i != MAttrs.size(); ++i) 390 Features.AddFeature(MAttrs[i]); 391 FeaturesStr = Features.getString(); 392 } 393 394 OwningPtr<tool_output_file> Out(GetOutputStream()); 395 if (!Out) 396 return 1; 397 398 formatted_raw_ostream FOS(Out->os()); 399 OwningPtr<MCStreamer> Str; 400 401 OwningPtr<MCInstrInfo> MCII(TheTarget->createMCInstrInfo()); 402 OwningPtr<MCSubtargetInfo> 403 STI(TheTarget->createMCSubtargetInfo(TripleName, MCPU, FeaturesStr)); 404 405 if (FileType == OFT_AssemblyFile) { 406 MCInstPrinter *IP = 407 TheTarget->createMCInstPrinter(OutputAsmVariant, *MAI, *MCII, *MRI, *STI); 408 MCCodeEmitter *CE = 0; 409 MCAsmBackend *MAB = 0; 410 if (ShowEncoding) { 411 CE = TheTarget->createMCCodeEmitter(*MCII, *MRI, *STI, Ctx);
| 1//===-- llvm-mc.cpp - Machine Code Hacking Driver -------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This utility is a simple driver that allows command line hacking on machine 11// code. 12// 13//===----------------------------------------------------------------------===// 14 15#include "llvm/MC/MCParser/AsmLexer.h" 16#include "llvm/MC/MCParser/MCAsmLexer.h" 17#include "llvm/MC/MCAsmBackend.h" 18#include "llvm/MC/MCAsmInfo.h" 19#include "llvm/MC/MCContext.h" 20#include "llvm/MC/MCCodeEmitter.h" 21#include "llvm/MC/MCInstPrinter.h" 22#include "llvm/MC/MCInstrInfo.h" 23#include "llvm/MC/MCObjectFileInfo.h" 24#include "llvm/MC/MCRegisterInfo.h" 25#include "llvm/MC/MCSectionMachO.h" 26#include "llvm/MC/MCStreamer.h" 27#include "llvm/MC/MCSubtargetInfo.h" 28#include "llvm/MC/MCTargetAsmParser.h" 29#include "llvm/MC/SubtargetFeature.h" 30#include "llvm/ADT/OwningPtr.h" 31#include "llvm/Support/CommandLine.h" 32#include "llvm/Support/FileUtilities.h" 33#include "llvm/Support/FormattedStream.h" 34#include "llvm/Support/ManagedStatic.h" 35#include "llvm/Support/MemoryBuffer.h" 36#include "llvm/Support/PrettyStackTrace.h" 37#include "llvm/Support/SourceMgr.h" 38#include "llvm/Support/ToolOutputFile.h" 39#include "llvm/Support/Host.h" 40#include "llvm/Support/Signals.h" 41#include "llvm/Support/TargetRegistry.h" 42#include "llvm/Support/TargetSelect.h" 43#include "llvm/Support/system_error.h" 44#include "Disassembler.h" 45using namespace llvm; 46 47static cl::opt<std::string> 48InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-")); 49 50static cl::opt<std::string> 51OutputFilename("o", cl::desc("Output filename"), 52 cl::value_desc("filename")); 53 54static cl::opt<bool> 55ShowEncoding("show-encoding", cl::desc("Show instruction encodings")); 56 57static cl::opt<bool> 58ShowInst("show-inst", cl::desc("Show internal instruction representation")); 59 60static cl::opt<bool> 61ShowInstOperands("show-inst-operands", 62 cl::desc("Show instructions operands as parsed")); 63 64static cl::opt<unsigned> 65OutputAsmVariant("output-asm-variant", 66 cl::desc("Syntax variant to use for output printing")); 67 68static cl::opt<bool> 69RelaxAll("mc-relax-all", cl::desc("Relax all fixups")); 70 71static cl::opt<bool> 72NoExecStack("mc-no-exec-stack", cl::desc("File doesn't need an exec stack")); 73 74enum OutputFileType { 75 OFT_Null, 76 OFT_AssemblyFile, 77 OFT_ObjectFile 78}; 79static cl::opt<OutputFileType> 80FileType("filetype", cl::init(OFT_AssemblyFile), 81 cl::desc("Choose an output file type:"), 82 cl::values( 83 clEnumValN(OFT_AssemblyFile, "asm", 84 "Emit an assembly ('.s') file"), 85 clEnumValN(OFT_Null, "null", 86 "Don't emit anything (for timing purposes)"), 87 clEnumValN(OFT_ObjectFile, "obj", 88 "Emit a native object ('.o') file"), 89 clEnumValEnd)); 90 91static cl::list<std::string> 92IncludeDirs("I", cl::desc("Directory of include files"), 93 cl::value_desc("directory"), cl::Prefix); 94 95static cl::opt<std::string> 96ArchName("arch", cl::desc("Target arch to assemble for, " 97 "see -version for available targets")); 98 99static cl::opt<std::string> 100TripleName("triple", cl::desc("Target triple to assemble for, " 101 "see -version for available targets")); 102 103static cl::opt<std::string> 104MCPU("mcpu", 105 cl::desc("Target a specific cpu type (-mcpu=help for details)"), 106 cl::value_desc("cpu-name"), 107 cl::init("")); 108 109static cl::list<std::string> 110MAttrs("mattr", 111 cl::CommaSeparated, 112 cl::desc("Target specific attributes (-mattr=help for details)"), 113 cl::value_desc("a1,+a2,-a3,...")); 114 115static cl::opt<Reloc::Model> 116RelocModel("relocation-model", 117 cl::desc("Choose relocation model"), 118 cl::init(Reloc::Default), 119 cl::values( 120 clEnumValN(Reloc::Default, "default", 121 "Target default relocation model"), 122 clEnumValN(Reloc::Static, "static", 123 "Non-relocatable code"), 124 clEnumValN(Reloc::PIC_, "pic", 125 "Fully relocatable, position independent code"), 126 clEnumValN(Reloc::DynamicNoPIC, "dynamic-no-pic", 127 "Relocatable external references, non-relocatable code"), 128 clEnumValEnd)); 129 130static cl::opt<llvm::CodeModel::Model> 131CMModel("code-model", 132 cl::desc("Choose code model"), 133 cl::init(CodeModel::Default), 134 cl::values(clEnumValN(CodeModel::Default, "default", 135 "Target default code model"), 136 clEnumValN(CodeModel::Small, "small", 137 "Small code model"), 138 clEnumValN(CodeModel::Kernel, "kernel", 139 "Kernel code model"), 140 clEnumValN(CodeModel::Medium, "medium", 141 "Medium code model"), 142 clEnumValN(CodeModel::Large, "large", 143 "Large code model"), 144 clEnumValEnd)); 145 146static cl::opt<bool> 147NoInitialTextSection("n", cl::desc("Don't assume assembly file starts " 148 "in the text section")); 149 150static cl::opt<bool> 151SaveTempLabels("L", cl::desc("Don't discard temporary labels")); 152 153static cl::opt<bool> 154GenDwarfForAssembly("g", cl::desc("Generate dwarf debugging info for assembly " 155 "source files")); 156 157enum ActionType { 158 AC_AsLex, 159 AC_Assemble, 160 AC_Disassemble, 161 AC_EDisassemble 162}; 163 164static cl::opt<ActionType> 165Action(cl::desc("Action to perform:"), 166 cl::init(AC_Assemble), 167 cl::values(clEnumValN(AC_AsLex, "as-lex", 168 "Lex tokens from a .s file"), 169 clEnumValN(AC_Assemble, "assemble", 170 "Assemble a .s file (default)"), 171 clEnumValN(AC_Disassemble, "disassemble", 172 "Disassemble strings of hex bytes"), 173 clEnumValN(AC_EDisassemble, "edis", 174 "Enhanced disassembly of strings of hex bytes"), 175 clEnumValEnd)); 176 177static const Target *GetTarget(const char *ProgName) { 178 // Figure out the target triple. 179 if (TripleName.empty()) 180 TripleName = sys::getDefaultTargetTriple(); 181 Triple TheTriple(Triple::normalize(TripleName)); 182 183 // Get the target specific parser. 184 std::string Error; 185 const Target *TheTarget = TargetRegistry::lookupTarget(ArchName, TheTriple, 186 Error); 187 if (!TheTarget) { 188 errs() << ProgName << ": " << Error; 189 return 0; 190 } 191 192 // Update the triple name and return the found target. 193 TripleName = TheTriple.getTriple(); 194 return TheTarget; 195} 196 197static tool_output_file *GetOutputStream() { 198 if (OutputFilename == "") 199 OutputFilename = "-"; 200 201 std::string Err; 202 tool_output_file *Out = new tool_output_file(OutputFilename.c_str(), Err, 203 raw_fd_ostream::F_Binary); 204 if (!Err.empty()) { 205 errs() << Err << '\n'; 206 delete Out; 207 return 0; 208 } 209 210 return Out; 211} 212 213static std::string DwarfDebugFlags; 214static void setDwarfDebugFlags(int argc, char **argv) { 215 if (!getenv("RC_DEBUG_OPTIONS")) 216 return; 217 for (int i = 0; i < argc; i++) { 218 DwarfDebugFlags += argv[i]; 219 if (i + 1 < argc) 220 DwarfDebugFlags += " "; 221 } 222} 223 224static int AsLexInput(SourceMgr &SrcMgr, MCAsmInfo &MAI, tool_output_file *Out) { 225 226 AsmLexer Lexer(MAI); 227 Lexer.setBuffer(SrcMgr.getMemoryBuffer(0)); 228 229 bool Error = false; 230 while (Lexer.Lex().isNot(AsmToken::Eof)) { 231 AsmToken Tok = Lexer.getTok(); 232 233 switch (Tok.getKind()) { 234 default: 235 SrcMgr.PrintMessage(Lexer.getLoc(), SourceMgr::DK_Warning, 236 "unknown token"); 237 Error = true; 238 break; 239 case AsmToken::Error: 240 Error = true; // error already printed. 241 break; 242 case AsmToken::Identifier: 243 Out->os() << "identifier: " << Lexer.getTok().getString(); 244 break; 245 case AsmToken::Integer: 246 Out->os() << "int: " << Lexer.getTok().getString(); 247 break; 248 case AsmToken::Real: 249 Out->os() << "real: " << Lexer.getTok().getString(); 250 break; 251 case AsmToken::Register: 252 Out->os() << "register: " << Lexer.getTok().getRegVal(); 253 break; 254 case AsmToken::String: 255 Out->os() << "string: " << Lexer.getTok().getString(); 256 break; 257 258 case AsmToken::Amp: Out->os() << "Amp"; break; 259 case AsmToken::AmpAmp: Out->os() << "AmpAmp"; break; 260 case AsmToken::At: Out->os() << "At"; break; 261 case AsmToken::Caret: Out->os() << "Caret"; break; 262 case AsmToken::Colon: Out->os() << "Colon"; break; 263 case AsmToken::Comma: Out->os() << "Comma"; break; 264 case AsmToken::Dollar: Out->os() << "Dollar"; break; 265 case AsmToken::Dot: Out->os() << "Dot"; break; 266 case AsmToken::EndOfStatement: Out->os() << "EndOfStatement"; break; 267 case AsmToken::Eof: Out->os() << "Eof"; break; 268 case AsmToken::Equal: Out->os() << "Equal"; break; 269 case AsmToken::EqualEqual: Out->os() << "EqualEqual"; break; 270 case AsmToken::Exclaim: Out->os() << "Exclaim"; break; 271 case AsmToken::ExclaimEqual: Out->os() << "ExclaimEqual"; break; 272 case AsmToken::Greater: Out->os() << "Greater"; break; 273 case AsmToken::GreaterEqual: Out->os() << "GreaterEqual"; break; 274 case AsmToken::GreaterGreater: Out->os() << "GreaterGreater"; break; 275 case AsmToken::Hash: Out->os() << "Hash"; break; 276 case AsmToken::LBrac: Out->os() << "LBrac"; break; 277 case AsmToken::LCurly: Out->os() << "LCurly"; break; 278 case AsmToken::LParen: Out->os() << "LParen"; break; 279 case AsmToken::Less: Out->os() << "Less"; break; 280 case AsmToken::LessEqual: Out->os() << "LessEqual"; break; 281 case AsmToken::LessGreater: Out->os() << "LessGreater"; break; 282 case AsmToken::LessLess: Out->os() << "LessLess"; break; 283 case AsmToken::Minus: Out->os() << "Minus"; break; 284 case AsmToken::Percent: Out->os() << "Percent"; break; 285 case AsmToken::Pipe: Out->os() << "Pipe"; break; 286 case AsmToken::PipePipe: Out->os() << "PipePipe"; break; 287 case AsmToken::Plus: Out->os() << "Plus"; break; 288 case AsmToken::RBrac: Out->os() << "RBrac"; break; 289 case AsmToken::RCurly: Out->os() << "RCurly"; break; 290 case AsmToken::RParen: Out->os() << "RParen"; break; 291 case AsmToken::Slash: Out->os() << "Slash"; break; 292 case AsmToken::Star: Out->os() << "Star"; break; 293 case AsmToken::Tilde: Out->os() << "Tilde"; break; 294 } 295 296 // Print the token string. 297 Out->os() << " (\""; 298 Out->os().write_escaped(Tok.getString()); 299 Out->os() << "\")\n"; 300 } 301 302 return Error; 303} 304 305static int AssembleInput(const char *ProgName, const Target *TheTarget, 306 SourceMgr &SrcMgr, MCContext &Ctx, MCStreamer &Str, 307 MCAsmInfo &MAI, MCSubtargetInfo &STI) { 308 OwningPtr<MCAsmParser> Parser(createMCAsmParser(SrcMgr, Ctx, 309 Str, MAI)); 310 OwningPtr<MCTargetAsmParser> TAP(TheTarget->createMCAsmParser(STI, *Parser)); 311 if (!TAP) { 312 errs() << ProgName 313 << ": error: this target does not support assembly parsing.\n"; 314 return 1; 315 } 316 317 Parser->setShowParsedOperands(ShowInstOperands); 318 Parser->setTargetParser(*TAP.get()); 319 320 int Res = Parser->Run(NoInitialTextSection); 321 322 return Res; 323} 324 325int main(int argc, char **argv) { 326 // Print a stack trace if we signal out. 327 sys::PrintStackTraceOnErrorSignal(); 328 PrettyStackTraceProgram X(argc, argv); 329 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit. 330 331 // Initialize targets and assembly printers/parsers. 332 llvm::InitializeAllTargetInfos(); 333 llvm::InitializeAllTargetMCs(); 334 llvm::InitializeAllAsmParsers(); 335 llvm::InitializeAllDisassemblers(); 336 337 // Register the target printer for --version. 338 cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion); 339 340 cl::ParseCommandLineOptions(argc, argv, "llvm machine code playground\n"); 341 TripleName = Triple::normalize(TripleName); 342 setDwarfDebugFlags(argc, argv); 343 344 const char *ProgName = argv[0]; 345 const Target *TheTarget = GetTarget(ProgName); 346 if (!TheTarget) 347 return 1; 348 349 OwningPtr<MemoryBuffer> BufferPtr; 350 if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputFilename, BufferPtr)) { 351 errs() << ProgName << ": " << ec.message() << '\n'; 352 return 1; 353 } 354 MemoryBuffer *Buffer = BufferPtr.take(); 355 356 SourceMgr SrcMgr; 357 358 // Tell SrcMgr about this buffer, which is what the parser will pick up. 359 SrcMgr.AddNewSourceBuffer(Buffer, SMLoc()); 360 361 // Record the location of the include directories so that the lexer can find 362 // it later. 363 SrcMgr.setIncludeDirs(IncludeDirs); 364 365 366 llvm::OwningPtr<MCAsmInfo> MAI(TheTarget->createMCAsmInfo(TripleName)); 367 assert(MAI && "Unable to create target asm info!"); 368 369 llvm::OwningPtr<MCRegisterInfo> MRI(TheTarget->createMCRegInfo(TripleName)); 370 assert(MRI && "Unable to create target register info!"); 371 372 // FIXME: This is not pretty. MCContext has a ptr to MCObjectFileInfo and 373 // MCObjectFileInfo needs a MCContext reference in order to initialize itself. 374 OwningPtr<MCObjectFileInfo> MOFI(new MCObjectFileInfo()); 375 MCContext Ctx(*MAI, *MRI, MOFI.get(), &SrcMgr); 376 MOFI->InitMCObjectFileInfo(TripleName, RelocModel, CMModel, Ctx); 377 378 if (SaveTempLabels) 379 Ctx.setAllowTemporaryLabels(false); 380 381 Ctx.setGenDwarfForAssembly(GenDwarfForAssembly); 382 if (!DwarfDebugFlags.empty()) 383 Ctx.setDwarfDebugFlags(StringRef(DwarfDebugFlags)); 384 385 // Package up features to be passed to target/subtarget 386 std::string FeaturesStr; 387 if (MAttrs.size()) { 388 SubtargetFeatures Features; 389 for (unsigned i = 0; i != MAttrs.size(); ++i) 390 Features.AddFeature(MAttrs[i]); 391 FeaturesStr = Features.getString(); 392 } 393 394 OwningPtr<tool_output_file> Out(GetOutputStream()); 395 if (!Out) 396 return 1; 397 398 formatted_raw_ostream FOS(Out->os()); 399 OwningPtr<MCStreamer> Str; 400 401 OwningPtr<MCInstrInfo> MCII(TheTarget->createMCInstrInfo()); 402 OwningPtr<MCSubtargetInfo> 403 STI(TheTarget->createMCSubtargetInfo(TripleName, MCPU, FeaturesStr)); 404 405 if (FileType == OFT_AssemblyFile) { 406 MCInstPrinter *IP = 407 TheTarget->createMCInstPrinter(OutputAsmVariant, *MAI, *MCII, *MRI, *STI); 408 MCCodeEmitter *CE = 0; 409 MCAsmBackend *MAB = 0; 410 if (ShowEncoding) { 411 CE = TheTarget->createMCCodeEmitter(*MCII, *MRI, *STI, Ctx);
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