Import LLVM, at r72732.

1 files changed, 100 insertions, 0 deletions

diff --git a/tools/llvm-db/llvm-db.cpp b/tools/llvm-db/llvm-db.cpp
new file mode 100644
index 0000000..04e6162
--- /dev/null
+++ b/tools/llvm-db/llvm-db.cpp
@@ -0,0 +1,100 @@
+//===- llvm-db.cpp - LLVM Debugger ----------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This utility implements a simple text-mode front-end to the LLVM debugger
+// library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CLIDebugger.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/System/Signals.h"
+#include <iostream>
+using namespace llvm;
+
+namespace {
+  // Command line options for specifying the program to debug and options to use
+  cl::opt<std::string>
+  InputFile(cl::desc("<program>"), cl::Positional, cl::init(""));
+
+  cl::list<std::string>
+  InputArgs("args", cl::Positional, cl::desc("<program and arguments>"),
+            cl::ZeroOrMore);
+
+  // Command line options to control various directory related stuff
+  cl::list<std::string>
+  SourceDirectories("directory", cl::value_desc("directory"),
+                    cl::desc("Add directory to the search for source files"));
+  cl::alias SDA("d", cl::desc("Alias for --directory"),
+                cl::aliasopt(SourceDirectories));
+
+  cl::opt<std::string>
+  WorkingDirectory("cd", cl::desc("Use directory as current working directory"),
+                   cl::value_desc("directory"));
+
+  // Command line options specific to the llvm-db debugger driver
+  cl::opt<bool> Quiet("quiet", cl::desc("Do not print introductory messages"));
+  cl::alias QA1("silent", cl::desc("Alias for -quiet"), cl::aliasopt(Quiet));
+  cl::alias QA2("q", cl::desc("Alias for -quiet"), cl::aliasopt(Quiet));
+}
+
+//===----------------------------------------------------------------------===//
+// main Driver function
+//
+int main(int argc, char **argv, char * const *envp) {
+  // Print a stack trace if we signal out.
+  sys::PrintStackTraceOnErrorSignal();
+  PrettyStackTraceProgram X(argc, argv);
+  
+  llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
+  std::cout << "NOTE: llvm-db is known useless right now.\n";
+  try {
+    cl::ParseCommandLineOptions(argc, argv,
+                                "llvm source-level debugger\n");
+
+    if (!Quiet)
+      std::cout << "llvm-db: The LLVM source-level debugger\n";
+
+    // Merge Inputfile and InputArgs into the InputArgs list...
+    if (!InputFile.empty() && InputArgs.empty())
+      InputArgs.push_back(InputFile);
+
+    // Create the CLI debugger...
+    CLIDebugger D;
+
+    // Initialize the debugger with the command line options we read...
+    Debugger &Dbg = D.getDebugger();
+
+    // Initialize the debugger environment.
+    Dbg.initializeEnvironment(envp);
+    Dbg.setWorkingDirectory(WorkingDirectory);
+    for (unsigned i = 0, e = SourceDirectories.size(); i != e; ++i)
+      D.addSourceDirectory(SourceDirectories[i]);
+
+    if (!InputArgs.empty()) {
+      try {
+        D.fileCommand(InputArgs[0]);
+      } catch (const std::string &Error) {
+        std::cout << "Error: " << Error << "\n";
+      }
+
+      Dbg.setProgramArguments(InputArgs.begin()+1, InputArgs.end());
+    }
+
+    // Now that we have initialized the debugger, run it.
+    return D.run();
+  } catch (const std::string& msg) {
+    std::cerr << argv[0] << ": " << msg << "\n";
+  } catch (...) {
+    std::cerr << argv[0] << ": Unexpected unknown exception occurred.\n";
+  }
+  return 1;
+}