tools/llvm-db/llvm-db.cpp

   1 //===- llvm-db.cpp - LLVM Debugger ----------------------------------------===//
   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 implements a simple text-mode front-end to the LLVM debugger
  11 // library.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "CLIDebugger.h"
  16 #include "llvm/Support/CommandLine.h"
  17 #include "llvm/Support/ManagedStatic.h"
  18 #include "llvm/Support/PrettyStackTrace.h"
  19 #include "llvm/System/Signals.h"
  20 #include <iostream>
  21 using namespace llvm;
  22
  23 namespace {
  24   // Command line options for specifying the program to debug and options to use
  25   cl::opt<std::string>
  26   InputFile(cl::desc("<program>"), cl::Positional, cl::init(""));
  27
  28   cl::list<std::string>
  29   InputArgs("args", cl::Positional, cl::desc("<program and arguments>"),
  30             cl::ZeroOrMore);
  31
  32   // Command line options to control various directory related stuff
  33   cl::list<std::string>
  34   SourceDirectories("directory", cl::value_desc("directory"),
  35                     cl::desc("Add directory to the search for source files"));
  36   cl::alias SDA("d", cl::desc("Alias for --directory"),
  37                 cl::aliasopt(SourceDirectories));
  38
  39   cl::opt<std::string>
  40   WorkingDirectory("cd", cl::desc("Use directory as current working directory"),
  41                    cl::value_desc("directory"));
  42
  43   // Command line options specific to the llvm-db debugger driver
  44   cl::opt<bool> Quiet("quiet", cl::desc("Do not print introductory messages"));
  45   cl::alias QA1("silent", cl::desc("Alias for -quiet"), cl::aliasopt(Quiet));
  46   cl::alias QA2("q", cl::desc("Alias for -quiet"), cl::aliasopt(Quiet));
  47 }
  48
  49 //===----------------------------------------------------------------------===//
  50 // main Driver function
  51 //
  52 int main(int argc, char **argv, char * const *envp) {
  53   // Print a stack trace if we signal out.
  54   sys::PrintStackTraceOnErrorSignal();
  55   PrettyStackTraceProgram X(argc, argv);
  56
  57   llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
  58   std::cout << "NOTE: llvm-db is known useless right now.\n";
  59   try {
  60     cl::ParseCommandLineOptions(argc, argv,
  61                                 "llvm source-level debugger\n");
  62
  63     if (!Quiet)
  64       std::cout << "llvm-db: The LLVM source-level debugger\n";
  65
  66     // Merge Inputfile and InputArgs into the InputArgs list...
  67     if (!InputFile.empty() && InputArgs.empty())
  68       InputArgs.push_back(InputFile);
  69
  70     // Create the CLI debugger...
  71     CLIDebugger D;
  72
  73     // Initialize the debugger with the command line options we read...
  74     Debugger &Dbg = D.getDebugger();
  75
  76     // Initialize the debugger environment.
  77     Dbg.initializeEnvironment(envp);
  78     Dbg.setWorkingDirectory(WorkingDirectory);
  79     for (unsigned i = 0, e = SourceDirectories.size(); i != e; ++i)
  80       D.addSourceDirectory(SourceDirectories[i]);
  81
  82     if (!InputArgs.empty()) {
  83       try {
  84         D.fileCommand(InputArgs[0]);
  85       } catch (const std::string &Error) {
  86         std::cout << "Error: " << Error << "\n";
  87       }
  88
  89       Dbg.setProgramArguments(InputArgs.begin()+1, InputArgs.end());
  90     }
  91
  92     // Now that we have initialized the debugger, run it.
  93     return D.run();
  94   } catch (const std::string& msg) {
  95     std::cerr << argv[0] << ": " << msg << "\n";
  96   } catch (...) {
  97     std::cerr << argv[0] << ": Unexpected unknown exception occurred.\n";
  98   }
  99   return 1;
 100 }