-//===-- llvm-dis.cpp - The low-level LLVM disassembler --------------------===//
+//===-- llvm-mc.cpp - Machine Code Hacking Driver -------------------------===//
//
// The LLVM Compiler Infrastructure
//
//
//===----------------------------------------------------------------------===//
//
-// This utility may be invoked in the following manner:
-// llvm-dis [options] - Read LLVM bitcode from stdin, write asm to stdout
-// llvm-dis [options] x.bc - Read LLVM bitcode from the x.bc file, write asm
-// to the x.ll file.
-// Options:
-// --help - Output information about command line switches
+// This utility is a simple driver that allows command line hacking on machine
+// code.
//
//===----------------------------------------------------------------------===//
+#include "llvm/MC/MCParser/MCAsmLexer.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCCodeEmitter.h"
+#include "llvm/MC/MCInstPrinter.h"
+#include "llvm/MC/MCSectionMachO.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/ADT/OwningPtr.h"
#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/raw_ostream.h"
+#include "llvm/System/Host.h"
#include "llvm/System/Signals.h"
+#include "llvm/Target/TargetAsmBackend.h"
+#include "llvm/Target/TargetAsmParser.h"
+#include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetRegistry.h"
+#include "llvm/Target/TargetMachine.h" // FIXME.
+#include "llvm/Target/TargetSelect.h"
+#include "llvm/MC/MCParser/AsmParser.h"
+#include "Disassembler.h"
using namespace llvm;
static cl::opt<std::string>
OutputFilename("o", cl::desc("Output filename"),
cl::value_desc("filename"));
-int main(int argc, char **argv) {
- // Print a stack trace if we signal out.
- sys::PrintStackTraceOnErrorSignal();
- PrettyStackTraceProgram X(argc, argv);
+static cl::opt<bool>
+ShowEncoding("show-encoding", cl::desc("Show instruction encodings"));
+
+static cl::opt<bool>
+ShowInst("show-inst", cl::desc("Show internal instruction representation"));
+
+static cl::opt<unsigned>
+OutputAsmVariant("output-asm-variant",
+ cl::desc("Syntax variant to use for output printing"));
+
+enum OutputFileType {
+ OFT_AssemblyFile,
+ OFT_ObjectFile
+};
+static cl::opt<OutputFileType>
+FileType("filetype", cl::init(OFT_AssemblyFile),
+ cl::desc("Choose an output file type:"),
+ cl::values(
+ clEnumValN(OFT_AssemblyFile, "asm",
+ "Emit an assembly ('.s') file"),
+ clEnumValN(OFT_ObjectFile, "obj",
+ "Emit a native object ('.o') file"),
+ clEnumValEnd));
+
+static cl::opt<bool>
+Force("f", cl::desc("Enable binary output on terminals"));
+
+static cl::list<std::string>
+IncludeDirs("I", cl::desc("Directory of include files"),
+ cl::value_desc("directory"), cl::Prefix);
+
+static cl::opt<std::string>
+ArchName("arch", cl::desc("Target arch to assemble for, "
+ "see -version for available targets"));
+
+static cl::opt<std::string>
+TripleName("triple", cl::desc("Target triple to assemble for, "
+ "see -version for available targets"));
+
+static cl::opt<bool>
+NoInitialTextSection("n", cl::desc(
+ "Don't assume assembly file starts in the text section"));
+
+enum ActionType {
+ AC_AsLex,
+ AC_Assemble,
+ AC_Disassemble
+};
+
+static cl::opt<ActionType>
+Action(cl::desc("Action to perform:"),
+ cl::init(AC_Assemble),
+ cl::values(clEnumValN(AC_AsLex, "as-lex",
+ "Lex tokens from a .s file"),
+ clEnumValN(AC_Assemble, "assemble",
+ "Assemble a .s file (default)"),
+ clEnumValN(AC_Disassemble, "disassemble",
+ "Disassemble strings of hex bytes"),
+ 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();
+ }
+
+ // Get the target specific parser.
+ std::string Error;
+ const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);
+ if (TheTarget)
+ return TheTarget;
+
+ errs() << ProgName << ": error: unable to get target for '" << TripleName
+ << "', see --version and --triple.\n";
+ return 0;
+}
+
+static int AsLexInput(const char *ProgName) {
+ std::string ErrorMessage;
+ MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFilename,
+ &ErrorMessage);
+ if (Buffer == 0) {
+ errs() << ProgName << ": ";
+ if (ErrorMessage.size())
+ errs() << ErrorMessage << "\n";
+ else
+ errs() << "input file didn't read correctly.\n";
+ return 1;
+ }
+
+ SourceMgr SrcMgr;
- llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
+ // 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);
- cl::ParseCommandLineOptions(argc, argv, "llvm machine code playground\n");
+ const Target *TheTarget = GetTarget(ProgName);
+ if (!TheTarget)
+ return 1;
+ const MCAsmInfo *MAI = TheTarget->createAsmInfo(TripleName);
+ assert(MAI && "Unable to create target asm info!");
+
+ AsmLexer Lexer(*MAI);
+
+ bool Error = false;
+
+ while (Lexer.Lex().isNot(AsmToken::Eof)) {
+ switch (Lexer.getKind()) {
+ default:
+ SrcMgr.PrintMessage(Lexer.getLoc(), "unknown token", "warning");
+ Error = true;
+ break;
+ case AsmToken::Error:
+ Error = true; // error already printed.
+ break;
+ case AsmToken::Identifier:
+ outs() << "identifier: " << Lexer.getTok().getString() << '\n';
+ break;
+ case AsmToken::String:
+ outs() << "string: " << Lexer.getTok().getString() << '\n';
+ break;
+ case AsmToken::Integer:
+ outs() << "int: " << Lexer.getTok().getString() << '\n';
+ break;
+
+ case AsmToken::Amp: outs() << "Amp\n"; break;
+ case AsmToken::AmpAmp: outs() << "AmpAmp\n"; break;
+ case AsmToken::Caret: outs() << "Caret\n"; break;
+ case AsmToken::Colon: outs() << "Colon\n"; break;
+ case AsmToken::Comma: outs() << "Comma\n"; break;
+ case AsmToken::Dollar: outs() << "Dollar\n"; break;
+ case AsmToken::EndOfStatement: outs() << "EndOfStatement\n"; break;
+ case AsmToken::Eof: outs() << "Eof\n"; break;
+ case AsmToken::Equal: outs() << "Equal\n"; break;
+ case AsmToken::EqualEqual: outs() << "EqualEqual\n"; break;
+ case AsmToken::Exclaim: outs() << "Exclaim\n"; break;
+ case AsmToken::ExclaimEqual: outs() << "ExclaimEqual\n"; break;
+ case AsmToken::Greater: outs() << "Greater\n"; break;
+ case AsmToken::GreaterEqual: outs() << "GreaterEqual\n"; break;
+ case AsmToken::GreaterGreater: outs() << "GreaterGreater\n"; break;
+ case AsmToken::LParen: outs() << "LParen\n"; break;
+ case AsmToken::Less: outs() << "Less\n"; break;
+ case AsmToken::LessEqual: outs() << "LessEqual\n"; break;
+ case AsmToken::LessGreater: outs() << "LessGreater\n"; break;
+ case AsmToken::LessLess: outs() << "LessLess\n"; break;
+ case AsmToken::Minus: outs() << "Minus\n"; break;
+ case AsmToken::Percent: outs() << "Percent\n"; break;
+ case AsmToken::Pipe: outs() << "Pipe\n"; break;
+ case AsmToken::PipePipe: outs() << "PipePipe\n"; break;
+ case AsmToken::Plus: outs() << "Plus\n"; break;
+ case AsmToken::RParen: outs() << "RParen\n"; break;
+ case AsmToken::Slash: outs() << "Slash\n"; break;
+ case AsmToken::Star: outs() << "Star\n"; break;
+ case AsmToken::Tilde: outs() << "Tilde\n"; break;
+ }
+ }
+
+ return Error;
+}
+
+static formatted_raw_ostream *GetOutputStream() {
+ if (OutputFilename == "")
+ OutputFilename = "-";
+
+ // Make sure that the Out file gets unlinked from the disk if we get a
+ // SIGINT.
+ if (OutputFilename != "-")
+ sys::RemoveFileOnSignal(sys::Path(OutputFilename));
+
+ std::string Err;
+ raw_fd_ostream *Out = new raw_fd_ostream(OutputFilename.c_str(), Err,
+ raw_fd_ostream::F_Binary);
+ if (!Err.empty()) {
+ errs() << Err << '\n';
+ delete Out;
+ return 0;
+ }
+
+ return new formatted_raw_ostream(*Out, formatted_raw_ostream::DELETE_STREAM);
+}
+
+static int AssembleInput(const char *ProgName) {
+ const Target *TheTarget = GetTarget(ProgName);
+ if (!TheTarget)
+ return 1;
+
+ std::string Error;
+ MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFilename, &Error);
+ if (Buffer == 0) {
+ errs() << ProgName << ": ";
+ if (Error.size())
+ errs() << Error << "\n";
+ else
+ errs() << "input file didn't read correctly.\n";
+ return 1;
+ }
+
+ 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);
+
+
+ const MCAsmInfo *MAI = TheTarget->createAsmInfo(TripleName);
+ assert(MAI && "Unable to create target asm info!");
+
+ MCContext Ctx(*MAI);
+ formatted_raw_ostream *Out = GetOutputStream();
+ if (!Out)
+ return 1;
+
+
+ // FIXME: We shouldn't need to do this (and link in codegen).
+ OwningPtr<TargetMachine> TM(TheTarget->createTargetMachine(TripleName, ""));
+
+ if (!TM) {
+ errs() << ProgName << ": error: could not create target for triple '"
+ << TripleName << "'.\n";
+ return 1;
+ }
+
+ OwningPtr<MCInstPrinter> IP;
+ OwningPtr<MCCodeEmitter> CE;
+ OwningPtr<MCStreamer> Str;
+ OwningPtr<TargetAsmBackend> TAB;
+
+ if (FileType == OFT_AssemblyFile) {
+ IP.reset(TheTarget->createMCInstPrinter(OutputAsmVariant, *MAI, *Out));
+ if (ShowEncoding)
+ CE.reset(TheTarget->createCodeEmitter(*TM, Ctx));
+ Str.reset(createAsmStreamer(Ctx, *Out,TM->getTargetData()->isLittleEndian(),
+ /*asmverbose*/true, IP.get(), CE.get(),
+ ShowInst));
+ } else {
+ assert(FileType == OFT_ObjectFile && "Invalid file type!");
+ CE.reset(TheTarget->createCodeEmitter(*TM, Ctx));
+ TAB.reset(TheTarget->createAsmBackend(TripleName));
+ Str.reset(createMachOStreamer(Ctx, *TAB, *Out, CE.get()));
+ }
+
+ AsmParser Parser(SrcMgr, Ctx, *Str.get(), *MAI);
+ OwningPtr<TargetAsmParser> TAP(TheTarget->createAsmParser(Parser));
+ if (!TAP) {
+ errs() << ProgName
+ << ": error: this target does not support assembly parsing.\n";
+ return 1;
+ }
+
+ Parser.setTargetParser(*TAP.get());
+
+ int Res = Parser.Run(NoInitialTextSection);
+ if (Out != &fouts())
+ delete Out;
+
+ // Delete output on errors.
+ if (Res && OutputFilename != "-")
+ sys::Path(OutputFilename).eraseFromDisk();
+
+ return Res;
+}
+
+static int DisassembleInput(const char *ProgName) {
+ std::string Error;
+ const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);
+ if (TheTarget == 0) {
+ errs() << ProgName << ": error: unable to get target for '" << TripleName
+ << "', see --version and --triple.\n";
+ return 0;
+ }
+
std::string ErrorMessage;
- MemoryBuffer *Buffer
- = MemoryBuffer::getFileOrSTDIN(InputFilename, &ErrorMessage);
+ MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFilename,
+ &ErrorMessage);
if (Buffer == 0) {
- errs() << argv[0] << ": ";
+ errs() << ProgName << ": ";
if (ErrorMessage.size())
errs() << ErrorMessage << "\n";
else
return 1;
}
+ return Disassembler::disassemble(*TheTarget, TripleName, *Buffer);
+}
+
+
+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");
+
+ switch (Action) {
+ default:
+ case AC_AsLex:
+ return AsLexInput(argv[0]);
+ case AC_Assemble:
+ return AssembleInput(argv[0]);
+ case AC_Disassemble:
+ return DisassembleInput(argv[0]);
+ }
return 0;
}
projects / oota-llvm.git / blobdiff