2009-06-19 07:05:21 +08:00
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//===-- llvm-mc.cpp - Machine Code Hacking Driver -------------------------===//
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2009-06-19 07:04:45 +08:00
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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2009-06-19 07:05:21 +08:00
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// This utility is a simple driver that allows command line hacking on machine
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// code.
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2009-06-19 07:04:45 +08:00
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//
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//===----------------------------------------------------------------------===//
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2009-06-24 08:52:40 +08:00
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/ADT/OwningPtr.h"
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2009-06-19 07:04:45 +08:00
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/PrettyStackTrace.h"
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2009-06-21 13:22:37 +08:00
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#include "llvm/Support/SourceMgr.h"
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2009-06-19 07:04:45 +08:00
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/System/Signals.h"
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2009-06-22 04:16:42 +08:00
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#include "AsmParser.h"
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2009-06-19 07:04:45 +08:00
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using namespace llvm;
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static cl::opt<std::string>
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InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));
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static cl::opt<std::string>
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OutputFilename("o", cl::desc("Output filename"),
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cl::value_desc("filename"));
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2009-06-21 13:22:37 +08:00
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static cl::list<std::string>
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IncludeDirs("I", cl::desc("Directory of include files"),
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cl::value_desc("directory"), cl::Prefix);
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2009-06-19 07:04:45 +08:00
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2009-06-21 13:22:37 +08:00
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enum ActionType {
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2009-06-22 04:16:42 +08:00
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AC_AsLex,
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2009-06-21 13:22:37 +08:00
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AC_Assemble
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};
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2009-06-19 07:04:45 +08:00
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2009-06-21 13:22:37 +08:00
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static cl::opt<ActionType>
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Action(cl::desc("Action to perform:"),
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2009-06-22 04:16:42 +08:00
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cl::init(AC_Assemble),
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cl::values(clEnumValN(AC_AsLex, "as-lex",
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"Lex tokens from a .s file"),
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clEnumValN(AC_Assemble, "assemble",
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2009-06-21 13:22:37 +08:00
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"Assemble a .s file (default)"),
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clEnumValEnd));
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2009-06-19 07:04:45 +08:00
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2009-06-22 04:16:42 +08:00
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static int AsLexInput(const char *ProgName) {
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2009-06-21 13:22:37 +08:00
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std::string ErrorMessage;
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MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFilename,
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&ErrorMessage);
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2009-06-19 07:04:45 +08:00
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if (Buffer == 0) {
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2009-06-21 13:22:37 +08:00
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errs() << ProgName << ": ";
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2009-06-19 07:04:45 +08:00
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if (ErrorMessage.size())
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errs() << ErrorMessage << "\n";
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else
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errs() << "input file didn't read correctly.\n";
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return 1;
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}
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2009-06-21 13:22:37 +08:00
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SourceMgr SrcMgr;
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// Tell SrcMgr about this buffer, which is what TGParser will pick up.
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SrcMgr.AddNewSourceBuffer(Buffer, SMLoc());
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// Record the location of the include directories so that the lexer can find
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// it later.
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SrcMgr.setIncludeDirs(IncludeDirs);
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2009-06-21 15:19:10 +08:00
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AsmLexer Lexer(SrcMgr);
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2009-06-19 07:04:45 +08:00
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2009-06-22 04:16:42 +08:00
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bool Error = false;
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2009-06-21 15:19:10 +08:00
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asmtok::TokKind Tok = Lexer.Lex();
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while (Tok != asmtok::Eof) {
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switch (Tok) {
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default:
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2009-06-30 08:49:23 +08:00
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Lexer.PrintMessage(Lexer.getLoc(), "unknown token", "warning");
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2009-06-22 04:16:42 +08:00
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Error = true;
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break;
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2009-06-22 03:21:25 +08:00
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case asmtok::Error:
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2009-06-22 04:16:42 +08:00
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Error = true; // error already printed.
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2009-06-22 03:21:25 +08:00
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break;
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2009-06-21 15:19:10 +08:00
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case asmtok::Identifier:
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outs() << "identifier: " << Lexer.getCurStrVal() << '\n';
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break;
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2009-06-22 03:21:25 +08:00
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case asmtok::Register:
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outs() << "register: " << Lexer.getCurStrVal() << '\n';
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break;
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2009-06-22 03:56:35 +08:00
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case asmtok::String:
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outs() << "string: " << Lexer.getCurStrVal() << '\n';
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break;
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2009-06-21 15:19:10 +08:00
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case asmtok::IntVal:
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outs() << "int: " << Lexer.getCurIntVal() << '\n';
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break;
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2009-07-01 14:56:54 +08:00
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case asmtok::Amp: outs() << "Amp\n"; break;
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case asmtok::AmpAmp: outs() << "AmpAmp\n"; break;
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case asmtok::Caret: outs() << "Caret\n"; break;
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2009-07-01 14:36:49 +08:00
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case asmtok::Colon: outs() << "Colon\n"; break;
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case asmtok::Comma: outs() << "Comma\n"; break;
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case asmtok::Dollar: outs() << "Dollar\n"; break;
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2009-07-01 14:56:54 +08:00
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case asmtok::EndOfStatement: outs() << "EndOfStatement\n"; break;
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case asmtok::Eof: outs() << "Eof\n"; break;
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2009-07-01 14:36:49 +08:00
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case asmtok::Equal: outs() << "Equal\n"; break;
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case asmtok::EqualEqual: outs() << "EqualEqual\n"; break;
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2009-07-01 14:56:54 +08:00
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case asmtok::Exclaim: outs() << "Exclaim\n"; break;
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case asmtok::ExclaimEqual: outs() << "ExclaimEqual\n"; break;
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case asmtok::Greater: outs() << "Greater\n"; break;
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case asmtok::GreaterEqual: outs() << "GreaterEqual\n"; break;
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case asmtok::GreaterGreater: outs() << "GreaterGreater\n"; break;
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case asmtok::LParen: outs() << "LParen\n"; break;
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case asmtok::Less: outs() << "Less\n"; break;
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case asmtok::LessEqual: outs() << "LessEqual\n"; break;
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case asmtok::LessGreater: outs() << "LessGreater\n"; break;
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case asmtok::LessLess: outs() << "LessLess\n"; break;
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case asmtok::Minus: outs() << "Minus\n"; break;
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case asmtok::Percent: outs() << "Percent\n"; break;
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2009-07-01 14:36:49 +08:00
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case asmtok::Pipe: outs() << "Pipe\n"; break;
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case asmtok::PipePipe: outs() << "PipePipe\n"; break;
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2009-07-01 14:56:54 +08:00
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case asmtok::Plus: outs() << "Plus\n"; break;
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case asmtok::RParen: outs() << "RParen\n"; break;
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case asmtok::Slash: outs() << "Slash\n"; break;
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case asmtok::Star: outs() << "Star\n"; break;
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case asmtok::Tilde: outs() << "Tilde\n"; break;
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2009-06-21 15:19:10 +08:00
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}
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Tok = Lexer.Lex();
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}
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2009-06-19 07:04:45 +08:00
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2009-06-22 04:16:42 +08:00
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return Error;
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2009-06-21 13:22:37 +08:00
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}
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2009-06-22 04:16:42 +08:00
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static int AssembleInput(const char *ProgName) {
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std::string ErrorMessage;
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MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFilename,
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&ErrorMessage);
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if (Buffer == 0) {
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errs() << ProgName << ": ";
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if (ErrorMessage.size())
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errs() << ErrorMessage << "\n";
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else
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errs() << "input file didn't read correctly.\n";
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return 1;
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}
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SourceMgr SrcMgr;
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// Tell SrcMgr about this buffer, which is what TGParser will pick up.
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SrcMgr.AddNewSourceBuffer(Buffer, SMLoc());
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// Record the location of the include directories so that the lexer can find
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// it later.
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SrcMgr.setIncludeDirs(IncludeDirs);
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2009-06-24 08:52:40 +08:00
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MCContext Ctx;
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OwningPtr<MCStreamer> Str(createAsmStreamer(Ctx, outs()));
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2009-06-25 07:30:00 +08:00
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// FIXME: Target hook & command line option for initial section.
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Str.get()->SwitchSection(Ctx.GetSection("__TEXT,__text,regular,pure_instructions"));
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2009-06-24 12:31:49 +08:00
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AsmParser Parser(SrcMgr, Ctx, *Str.get());
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2009-06-22 04:16:42 +08:00
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return Parser.Run();
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}
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2009-06-21 13:22:37 +08:00
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int main(int argc, char **argv) {
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// Print a stack trace if we signal out.
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sys::PrintStackTraceOnErrorSignal();
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PrettyStackTraceProgram X(argc, argv);
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llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
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cl::ParseCommandLineOptions(argc, argv, "llvm machine code playground\n");
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switch (Action) {
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default:
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2009-06-22 04:16:42 +08:00
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case AC_AsLex:
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return AsLexInput(argv[0]);
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2009-06-21 13:22:37 +08:00
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case AC_Assemble:
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return AssembleInput(argv[0]);
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}
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2009-06-19 07:04:45 +08:00
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return 0;
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}
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