lldb/tools/lldb-server/lldb-server.cpp

   1 //===-- lldb-server.cpp -----------------------------------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "SystemInitializerLLGS.h"
  10 #include "lldb/Initialization/SystemLifetimeManager.h"
  11 #include "lldb/Version/Version.h"
  12
  13 #include "llvm/ADT/STLExtras.h"
  14 #include "llvm/ADT/StringRef.h"
  15 #include "llvm/Support/InitLLVM.h"
  16 #include "llvm/Support/ManagedStatic.h"
  17 #include "llvm/Support/PrettyStackTrace.h"
  18 #include "llvm/Support/Signals.h"
  19
  20 #include <cstdio>
  21 #include <cstdlib>
  22
  23 static llvm::ManagedStatic<lldb_private::SystemLifetimeManager>
  24     g_debugger_lifetime;
  25
  26 static void display_usage(const char *progname) {
  27   fprintf(stderr, "Usage:\n"
  28                   "  %s v[ersion]\n"
  29                   "  %s g[dbserver] [options]\n"
  30                   "  %s p[latform] [options]\n"
  31                   "Invoke subcommand for additional help\n",
  32           progname, progname, progname);
  33   exit(0);
  34 }
  35
  36 // Forward declarations of subcommand main methods.
  37 int main_gdbserver(int argc, char *argv[]);
  38 int main_platform(int argc, char *argv[]);
  39
  40 namespace llgs {
  41 static void initialize() {
  42   if (auto e = g_debugger_lifetime->Initialize(
  43           std::make_unique<SystemInitializerLLGS>(), nullptr))
  44     llvm::consumeError(std::move(e));
  45 }
  46
  47 static void terminate_debugger() { g_debugger_lifetime->Terminate(); }
  48 } // namespace llgs
  49
  50 // main
  51 int main(int argc, char *argv[]) {
  52   llvm::InitLLVM IL(argc, argv, /*InstallPipeSignalExitHandler=*/false);
  53   llvm::PrettyStackTraceProgram X(argc, argv);
  54
  55   int option_error = 0;
  56   const char *progname = argv[0];
  57   if (argc < 2) {
  58     display_usage(progname);
  59     exit(option_error);
  60   }
  61
  62   switch (argv[1][0]) {
  63   case 'g':
  64     llgs::initialize();
  65     main_gdbserver(argc, argv);
  66     llgs::terminate_debugger();
  67     break;
  68   case 'p':
  69     llgs::initialize();
  70     main_platform(argc, argv);
  71     llgs::terminate_debugger();
  72     break;
  73   case 'v':
  74     fprintf(stderr, "%s\n", lldb_private::GetVersion());
  75     break;
  76   default:
  77     display_usage(progname);
  78     exit(option_error);
  79   }
  80 }