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/Host/Config.h"
  11 #include "lldb/Initialization/SystemLifetimeManager.h"
  12 #include "lldb/Version/Version.h"
  13
  14 #include "llvm/ADT/STLExtras.h"
  15 #include "llvm/ADT/StringRef.h"
  16 #include "llvm/Support/InitLLVM.h"
  17 #include "llvm/Support/ManagedStatic.h"
  18 #include "llvm/Support/PrettyStackTrace.h"
  19 #include "llvm/Support/Signals.h"
  20
  21 #include <cstdio>
  22 #include <cstdlib>
  23
  24 static llvm::ManagedStatic<lldb_private::SystemLifetimeManager>
  25     g_debugger_lifetime;
  26
  27 static void display_usage(const char *progname) {
  28   fprintf(stderr, "Usage:\n"
  29                   "  %s v[ersion]\n"
  30                   "  %s g[dbserver] [options]\n"
  31                   "  %s p[latform] [options]\n"
  32                   "Invoke subcommand for additional help\n",
  33           progname, progname, progname);
  34   exit(0);
  35 }
  36
  37 // Forward declarations of subcommand main methods.
  38 int main_gdbserver(int argc, char *argv[]);
  39 int main_platform(int argc, char *argv[]);
  40
  41 namespace llgs {
  42 static void initialize() {
  43   if (auto e = g_debugger_lifetime->Initialize(
  44           std::make_unique<SystemInitializerLLGS>(), nullptr))
  45     llvm::consumeError(std::move(e));
  46 }
  47
  48 static void terminate_debugger() { g_debugger_lifetime->Terminate(); }
  49 } // namespace llgs
  50
  51 // main
  52 int main(int argc, char *argv[]) {
  53   llvm::InitLLVM IL(argc, argv, /*InstallPipeSignalExitHandler=*/false);
  54   llvm::setBugReportMsg("PLEASE submit a bug report to " LLDB_BUG_REPORT_URL
  55                         " and include the crash backtrace.\n");
  56
  57   int option_error = 0;
  58   const char *progname = argv[0];
  59   if (argc < 2) {
  60     display_usage(progname);
  61     exit(option_error);
  62   }
  63
  64   switch (argv[1][0]) {
  65   case 'g':
  66     llgs::initialize();
  67     main_gdbserver(argc, argv);
  68     llgs::terminate_debugger();
  69     break;
  70   case 'p':
  71     llgs::initialize();
  72     main_platform(argc, argv);
  73     llgs::terminate_debugger();
  74     break;
  75   case 'v':
  76     fprintf(stderr, "%s\n", lldb_private::GetVersion());
  77     break;
  78   default:
  79     display_usage(progname);
  80     exit(option_error);
  81   }
  82 }