X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fmain.c;h=3649e4a22018667380237c63fedf425dfe26f531;hb=975f8708de015fb2b813edbf8b714f4777c57a41;hp=e199a10d2fb56b0846e41dc4d9be05eac1bec863;hpb=22e8e3c7c5de936aaf30ff85a967a19137206b6d;p=deliverable%2Fbinutils-gdb.git
diff --git a/gdb/main.c b/gdb/main.c
index e199a10d2f..3649e4a220 100644
--- a/gdb/main.c
+++ b/gdb/main.c
@@ -1,14 +1,12 @@
/* Top level stuff for GDB, the GNU debugger.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
- 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software
- Foundation, Inc.
+ Copyright (C) 1986-2020 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
@@ -17,9 +15,7 @@
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see . */
#include "defs.h"
#include "top.h"
@@ -27,132 +23,548 @@
#include "inferior.h"
#include "symfile.h"
#include "gdbcore.h"
-
#include "getopt.h"
#include
-#include "gdb_stat.h"
+#include
#include
-
-#include "gdb_string.h"
-#include "event-loop.h"
+#include "gdbsupport/event-loop.h"
#include "ui-out.h"
#include "interps.h"
#include "main.h"
-
-/* If nonzero, display time usage both at startup and for each command. */
-
-int display_time;
-
-/* If nonzero, display space usage both at startup and for each command. */
-
-int display_space;
-
-/* Whether this is the async version or not. The async version is
- invoked on the command line with the -nw --async options. In this
- version, the usual command_loop is substituted by and event loop which
- processes UI events asynchronously. */
-int event_loop_p = 1;
+#include "source.h"
+#include "cli/cli-cmds.h"
+#include "objfiles.h"
+#include "auto-load.h"
+#include "maint.h"
+
+#include "filenames.h"
+#include "gdbsupport/filestuff.h"
+#include
+#include "event-top.h"
+#include "infrun.h"
+#include "gdbsupport/signals-state-save-restore.h"
+#include
+#include
+#include "gdbsupport/pathstuff.h"
+#include "cli/cli-style.h"
+#ifdef GDBTK
+#include "gdbtk/generic/gdbtk.h"
+#endif
+#include "gdbsupport/alt-stack.h"
+#include "observable.h"
/* The selected interpreter. This will be used as a set command
variable, so it should always be malloc'ed - since
- do_setshow_command will free it. */
+ do_setshow_command will free it. */
char *interpreter_p;
-/* Whether xdb commands will be handled */
-int xdb_commands = 0;
-
-/* Whether dbx commands will be handled */
+/* Whether dbx commands will be handled. */
int dbx_commands = 0;
/* System root path, used to find libraries etc. */
char *gdb_sysroot = 0;
-struct ui_file *gdb_stdout;
-struct ui_file *gdb_stderr;
-struct ui_file *gdb_stdlog;
-struct ui_file *gdb_stdin;
-/* target IO streams */
+/* GDB datadir, used to store data files. */
+std::string gdb_datadir;
+
+/* Non-zero if GDB_DATADIR was provided on the command line.
+ This doesn't track whether data-directory is set later from the
+ command line, but we don't reread system.gdbinit when that happens. */
+static int gdb_datadir_provided = 0;
+
+/* If gdb was configured with --with-python=/path,
+ the possibly relocated path to python's lib directory. */
+std::string python_libdir;
+
+/* Target IO streams. */
struct ui_file *gdb_stdtargin;
struct ui_file *gdb_stdtarg;
struct ui_file *gdb_stdtargerr;
-/* Whether to enable writing into executable and core files */
-extern int write_files;
+/* True if --batch or --batch-silent was seen. */
+int batch_flag = 0;
+
+/* Support for the --batch-silent option. */
+int batch_silent = 0;
+
+/* Support for --return-child-result option.
+ Set the default to -1 to return error in the case
+ that the program does not run or does not complete. */
+int return_child_result = 0;
+int return_child_result_value = -1;
+
+
+/* GDB as it has been invoked from the command line (i.e. argv[0]). */
+static char *gdb_program_name;
+
+/* Return read only pointer to GDB_PROGRAM_NAME. */
+const char *
+get_gdb_program_name (void)
+{
+ return gdb_program_name;
+}
static void print_gdb_help (struct ui_file *);
-/* These two are used to set the external editor commands when gdb is farming
- out files to be edited by another program. */
+/* Set the data-directory parameter to NEW_DATADIR.
+ If NEW_DATADIR is not a directory then a warning is printed.
+ We don't signal an error for backward compatibility. */
-extern char *external_editor_command;
+void
+set_gdb_data_directory (const char *new_datadir)
+{
+ struct stat st;
-/* Call command_loop. If it happens to return, pass that through as a
- non-zero return status. */
+ if (stat (new_datadir, &st) < 0)
+ {
+ int save_errno = errno;
-static int
-captured_command_loop (void *data)
+ fprintf_unfiltered (gdb_stderr, "Warning: ");
+ print_sys_errmsg (new_datadir, save_errno);
+ }
+ else if (!S_ISDIR (st.st_mode))
+ warning (_("%ps is not a directory."),
+ styled_string (file_name_style.style (), new_datadir));
+
+ gdb_datadir = gdb_realpath (new_datadir).get ();
+
+ /* gdb_realpath won't return an absolute path if the path doesn't exist,
+ but we still want to record an absolute path here. If the user entered
+ "../foo" and "../foo" doesn't exist then we'll record $(pwd)/../foo which
+ isn't canonical, but that's ok. */
+ if (!IS_ABSOLUTE_PATH (gdb_datadir.c_str ()))
+ {
+ gdb::unique_xmalloc_ptr abs_datadir
+ = gdb_abspath (gdb_datadir.c_str ());
+
+ gdb_datadir = abs_datadir.get ();
+ }
+}
+
+/* Relocate a file or directory. PROGNAME is the name by which gdb
+ was invoked (i.e., argv[0]). INITIAL is the default value for the
+ file or directory. RELOCATABLE is true if the value is relocatable,
+ false otherwise. This may return an empty string under the same
+ conditions as make_relative_prefix returning NULL. */
+
+static std::string
+relocate_path (const char *progname, const char *initial, bool relocatable)
+{
+ if (relocatable)
+ {
+ gdb::unique_xmalloc_ptr str (make_relative_prefix (progname,
+ BINDIR,
+ initial));
+ if (str != nullptr)
+ return str.get ();
+ return std::string ();
+ }
+ return initial;
+}
+
+/* Like relocate_path, but specifically checks for a directory.
+ INITIAL is relocated according to the rules of relocate_path. If
+ the result is a directory, it is used; otherwise, INITIAL is used.
+ The chosen directory is then canonicalized using lrealpath. */
+
+std::string
+relocate_gdb_directory (const char *initial, bool relocatable)
+{
+ std::string dir = relocate_path (gdb_program_name, initial, relocatable);
+ if (!dir.empty ())
+ {
+ struct stat s;
+
+ if (stat (dir.c_str (), &s) != 0 || !S_ISDIR (s.st_mode))
+ {
+ dir.clear ();
+ }
+ }
+ if (dir.empty ())
+ dir = initial;
+
+ /* Canonicalize the directory. */
+ if (!dir.empty ())
+ {
+ gdb::unique_xmalloc_ptr canon_sysroot (lrealpath (dir.c_str ()));
+
+ if (canon_sysroot)
+ dir = canon_sysroot.get ();
+ }
+
+ return dir;
+}
+
+/* Given a gdbinit path in FILE, adjusts it according to the gdb_datadir
+ parameter if it is in the data dir, or passes it through relocate_path
+ otherwise. */
+
+static std::string
+relocate_gdbinit_path_maybe_in_datadir (const std::string &file,
+ bool relocatable)
{
- current_interp_command_loop ();
- /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton
- would clean things up (restoring the cleanup chain) to the state
- they were just prior to the call. Technically, this means that
- the do_cleanups() below is redundant. Unfortunately, many FUNCs
- are not that well behaved. do_cleanups should either be replaced
- with a do_cleanups call (to cover the problem) or an assertion
- check to detect bad FUNCs code. */
- do_cleanups (ALL_CLEANUPS);
+ size_t datadir_len = strlen (GDB_DATADIR);
+
+ std::string relocated_path;
+
+ /* If SYSTEM_GDBINIT lives in data-directory, and data-directory
+ has been provided, search for SYSTEM_GDBINIT there. */
+ if (gdb_datadir_provided
+ && datadir_len < file.length ()
+ && filename_ncmp (file.c_str (), GDB_DATADIR, datadir_len) == 0
+ && IS_DIR_SEPARATOR (file[datadir_len]))
+ {
+ /* Append the part of SYSTEM_GDBINIT that follows GDB_DATADIR
+ to gdb_datadir. */
+
+ size_t start = datadir_len;
+ for (; IS_DIR_SEPARATOR (file[start]); ++start)
+ ;
+ relocated_path = gdb_datadir + SLASH_STRING + file.substr (start);
+ }
+ else
+ {
+ relocated_path = relocate_path (gdb_program_name, file.c_str (),
+ relocatable);
+ }
+ return relocated_path;
+}
+
+/* Compute the locations of init files that GDB should source and
+ return them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If
+ there is no system gdbinit (resp. home gdbinit and local gdbinit)
+ to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and
+ LOCAL_GDBINIT) is set to the empty string. */
+static void
+get_init_files (std::vector *system_gdbinit,
+ std::string *home_gdbinit,
+ std::string *local_gdbinit)
+{
+ static std::vector sysgdbinit;
+ static std::string homeinit;
+ static std::string localinit;
+ static int initialized = 0;
+
+ if (!initialized)
+ {
+ struct stat homebuf, cwdbuf, s;
+
+ if (SYSTEM_GDBINIT[0])
+ {
+ std::string relocated_sysgdbinit
+ = relocate_gdbinit_path_maybe_in_datadir
+ (SYSTEM_GDBINIT, SYSTEM_GDBINIT_RELOCATABLE);
+ if (!relocated_sysgdbinit.empty ()
+ && stat (relocated_sysgdbinit.c_str (), &s) == 0)
+ sysgdbinit.push_back (relocated_sysgdbinit);
+ }
+ if (SYSTEM_GDBINIT_DIR[0])
+ {
+ std::string relocated_gdbinit_dir
+ = relocate_gdbinit_path_maybe_in_datadir
+ (SYSTEM_GDBINIT_DIR, SYSTEM_GDBINIT_DIR_RELOCATABLE);
+ if (!relocated_gdbinit_dir.empty ()) {
+ gdb_dir_up dir (opendir (relocated_gdbinit_dir.c_str ()));
+ if (dir != nullptr)
+ {
+ std::vector files;
+ for (;;)
+ {
+ struct dirent *ent = readdir (dir.get ());
+ if (ent == nullptr)
+ break;
+ std::string name (ent->d_name);
+ if (name == "." || name == "..")
+ continue;
+ /* ent->d_type is not available on all systems (e.g. mingw,
+ Solaris), so we have to call stat(). */
+ std::string filename
+ = relocated_gdbinit_dir + SLASH_STRING + name;
+ if (stat (filename.c_str (), &s) != 0
+ || !S_ISREG (s.st_mode))
+ continue;
+ const struct extension_language_defn *extlang
+ = get_ext_lang_of_file (filename.c_str ());
+ /* We effectively don't support "set script-extension
+ off/soft", because we are loading system init files here,
+ so it does not really make sense to depend on a
+ setting. */
+ if (extlang != nullptr && ext_lang_present_p (extlang))
+ files.push_back (std::move (filename));
+ }
+ std::sort (files.begin (), files.end ());
+ sysgdbinit.insert (sysgdbinit.end (),
+ files.begin (), files.end ());
+ }
+ }
+ }
+
+ const char *homedir = getenv ("HOME");
+
+ /* If the .gdbinit file in the current directory is the same as
+ the $HOME/.gdbinit file, it should not be sourced. homebuf
+ and cwdbuf are used in that purpose. Make sure that the stats
+ are zero in case one of them fails (this guarantees that they
+ won't match if either exists). */
+
+ memset (&homebuf, 0, sizeof (struct stat));
+ memset (&cwdbuf, 0, sizeof (struct stat));
+
+ if (homedir)
+ {
+ homeinit = std::string (homedir) + SLASH_STRING + GDBINIT;
+ if (stat (homeinit.c_str (), &homebuf) != 0)
+ {
+ homeinit = "";
+ }
+ }
+
+ if (stat (GDBINIT, &cwdbuf) == 0)
+ {
+ if (homeinit.empty ()
+ || memcmp ((char *) &homebuf, (char *) &cwdbuf,
+ sizeof (struct stat)))
+ localinit = GDBINIT;
+ }
+
+ initialized = 1;
+ }
+
+ *system_gdbinit = sysgdbinit;
+ *home_gdbinit = homeinit;
+ *local_gdbinit = localinit;
+}
+
+/* Start up the event loop. This is the entry point to the event loop
+ from the command loop. */
+
+static void
+start_event_loop ()
+{
+ /* Loop until there is nothing to do. This is the entry point to
+ the event loop engine. gdb_do_one_event will process one event
+ for each invocation. It blocks waiting for an event and then
+ processes it. */
+ while (1)
+ {
+ int result = 0;
+
+ try
+ {
+ result = gdb_do_one_event ();
+ }
+ catch (const gdb_exception &ex)
+ {
+ exception_print (gdb_stderr, ex);
+
+ /* If any exception escaped to here, we better enable
+ stdin. Otherwise, any command that calls async_disable_stdin,
+ and then throws, will leave stdin inoperable. */
+ SWITCH_THRU_ALL_UIS ()
+ {
+ async_enable_stdin ();
+ }
+ /* If we long-jumped out of do_one_event, we probably didn't
+ get around to resetting the prompt, which leaves readline
+ in a messed-up state. Reset it here. */
+ current_ui->prompt_state = PROMPT_NEEDED;
+ gdb::observers::command_error.notify ();
+ /* This call looks bizarre, but it is required. If the user
+ entered a command that caused an error,
+ after_char_processing_hook won't be called from
+ rl_callback_read_char_wrapper. Using a cleanup there
+ won't work, since we want this function to be called
+ after a new prompt is printed. */
+ if (after_char_processing_hook)
+ (*after_char_processing_hook) ();
+ /* Maybe better to set a flag to be checked somewhere as to
+ whether display the prompt or not. */
+ }
+
+ if (result < 0)
+ break;
+ }
+
+ /* We are done with the event loop. There are no more event sources
+ to listen to. So we exit GDB. */
+ return;
+}
+
+/* Call command_loop. */
+
+/* Prevent inlining this function for the benefit of GDB's selftests
+ in the testsuite. Those tests want to run GDB under GDB and stop
+ here. */
+static void captured_command_loop () __attribute__((noinline));
+
+static void
+captured_command_loop ()
+{
+ struct ui *ui = current_ui;
+
+ /* Top-level execution commands can be run in the background from
+ here on. */
+ current_ui->async = 1;
+
+ /* Give the interpreter a chance to print a prompt, if necessary */
+ if (ui->prompt_state != PROMPT_BLOCKED)
+ interp_pre_command_loop (top_level_interpreter ());
+
+ /* Now it's time to start the event loop. */
+ start_event_loop ();
+
/* If the command_loop returned, normally (rather than threw an
- error) we try to quit. If the quit is aborted, catch_errors()
- which called this catch the signal and restart the command
- loop. */
- quit_command (NULL, instream == stdin);
+ error) we try to quit. If the quit is aborted, our caller
+ catches the signal and restarts the command loop. */
+ quit_command (NULL, ui->instream == ui->stdin_stream);
+}
+
+/* Handle command errors thrown from within catch_command_errors. */
+
+static int
+handle_command_errors (const struct gdb_exception &e)
+{
+ if (e.reason < 0)
+ {
+ exception_print (gdb_stderr, e);
+
+ /* If any exception escaped to here, we better enable stdin.
+ Otherwise, any command that calls async_disable_stdin, and
+ then throws, will leave stdin inoperable. */
+ async_enable_stdin ();
+ return 0;
+ }
return 1;
}
+/* Type of the command callback passed to the const
+ catch_command_errors. */
+
+typedef void (catch_command_errors_const_ftype) (const char *, int);
+
+/* Wrap calls to commands run before the event loop is started. */
+
static int
-captured_main (void *data)
+catch_command_errors (catch_command_errors_const_ftype command,
+ const char *arg, int from_tty)
+{
+ try
+ {
+ int was_sync = current_ui->prompt_state == PROMPT_BLOCKED;
+
+ command (arg, from_tty);
+
+ maybe_wait_sync_command_done (was_sync);
+ }
+ catch (const gdb_exception &e)
+ {
+ return handle_command_errors (e);
+ }
+
+ return 1;
+}
+
+/* Adapter for symbol_file_add_main that translates 'from_tty' to a
+ symfile_add_flags. */
+
+static void
+symbol_file_add_main_adapter (const char *arg, int from_tty)
+{
+ symfile_add_flags add_flags = 0;
+
+ if (from_tty)
+ add_flags |= SYMFILE_VERBOSE;
+
+ symbol_file_add_main (arg, add_flags);
+}
+
+/* Perform validation of the '--readnow' and '--readnever' flags. */
+
+static void
+validate_readnow_readnever ()
+{
+ if (readnever_symbol_files && readnow_symbol_files)
+ {
+ error (_("%s: '--readnow' and '--readnever' cannot be "
+ "specified simultaneously"),
+ gdb_program_name);
+ }
+}
+
+/* Type of this option. */
+enum cmdarg_kind
+{
+ /* Option type -x. */
+ CMDARG_FILE,
+
+ /* Option type -ex. */
+ CMDARG_COMMAND,
+
+ /* Option type -ix. */
+ CMDARG_INIT_FILE,
+
+ /* Option type -iex. */
+ CMDARG_INIT_COMMAND
+};
+
+/* Arguments of --command option and its counterpart. */
+struct cmdarg
+{
+ cmdarg (cmdarg_kind type_, char *string_)
+ : type (type_), string (string_)
+ {}
+
+ /* Type of this option. */
+ enum cmdarg_kind type;
+
+ /* Value of this option - filename or the GDB command itself. String memory
+ is not owned by this structure despite it is 'const'. */
+ char *string;
+};
+
+static void
+captured_main_1 (struct captured_main_args *context)
{
- struct captured_main_args *context = data;
int argc = context->argc;
char **argv = context->argv;
- int count;
+
static int quiet = 0;
- static int batch = 0;
static int set_args = 0;
+ static int inhibit_home_gdbinit = 0;
/* Pointers to various arguments from command line. */
char *symarg = NULL;
char *execarg = NULL;
+ char *pidarg = NULL;
char *corearg = NULL;
+ char *pid_or_core_arg = NULL;
char *cdarg = NULL;
char *ttyarg = NULL;
- /* These are static so that we can take their address in an initializer. */
+ /* These are static so that we can take their address in an
+ initializer. */
static int print_help;
static int print_version;
+ static int print_configuration;
/* Pointers to all arguments of --command option. */
- char **cmdarg;
- /* Allocated size of cmdarg. */
- int cmdsize;
- /* Number of elements of cmdarg used. */
- int ncmd;
-
- /* Indices of all arguments of --directory option. */
- char **dirarg;
- /* Allocated size. */
- int dirsize;
- /* Number of elements used. */
- int ndir;
-
- struct stat homebuf, cwdbuf;
- char *homedir, *homeinit;
+ std::vector cmdarg_vec;
+
+ /* All arguments of --directory option. */
+ std::vector dirarg;
int i;
+ int save_auto_load;
+ int ret = 1;
+
+#ifdef HAVE_USEFUL_SBRK
+ /* Set this before constructing scoped_command_stats. */
+ lim_at_start = (char *) sbrk (0);
+#endif
- long time_at_startup = get_run_time ();
+ scoped_command_stats stat_reporter (false);
#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
setlocale (LC_MESSAGES, "");
@@ -160,76 +572,74 @@ captured_main (void *data)
#if defined (HAVE_SETLOCALE)
setlocale (LC_CTYPE, "");
#endif
+#ifdef ENABLE_NLS
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
+#endif
- START_PROGRESS (argv[0], 0);
-
- /* This needs to happen before the first use of malloc. */
- init_malloc (NULL);
+ notice_open_fds ();
-#ifdef HAVE_SBRK
- lim_at_start = (char *) sbrk (0);
+#ifdef __MINGW32__
+ /* Ensure stderr is unbuffered. A Cygwin pty or pipe is implemented
+ as a Windows pipe, and Windows buffers on pipes. */
+ setvbuf (stderr, NULL, _IONBF, BUFSIZ);
#endif
-#if defined (ALIGN_STACK_ON_STARTUP)
- i = (int) &count & 0x3;
- if (i != 0)
- alloca (4 - i);
-#endif
+ /* Note: `error' cannot be called before this point, because the
+ caller will crash when trying to print the exception. */
+ main_ui = new ui (stdin, stdout, stderr);
+ current_ui = main_ui;
- cmdsize = 1;
- cmdarg = (char **) xmalloc (cmdsize * sizeof (*cmdarg));
- ncmd = 0;
- dirsize = 1;
- dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg));
- ndir = 0;
-
- quit_flag = 0;
- line = (char *) xmalloc (linesize);
- line[0] = '\0'; /* Terminate saved (now empty) cmd line */
- instream = stdin;
-
- getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
- current_directory = gdb_dirbuf;
-
- gdb_stdout = stdio_fileopen (stdout);
- gdb_stderr = stdio_fileopen (stderr);
- gdb_stdlog = gdb_stderr; /* for moment */
- gdb_stdtarg = gdb_stderr; /* for moment */
- gdb_stdin = stdio_fileopen (stdin);
gdb_stdtargerr = gdb_stderr; /* for moment */
gdb_stdtargin = gdb_stdin; /* for moment */
- /* initialize error() */
- error_init ();
+ if (bfd_init () != BFD_INIT_MAGIC)
+ error (_("fatal error: libbfd ABI mismatch"));
+
+#ifdef __MINGW32__
+ /* On Windows, argv[0] is not necessarily set to absolute form when
+ GDB is found along PATH, without which relocation doesn't work. */
+ gdb_program_name = windows_get_absolute_argv0 (argv[0]);
+#else
+ gdb_program_name = xstrdup (argv[0]);
+#endif
+
+ /* Prefix warning messages with the command name. */
+ gdb::unique_xmalloc_ptr tmp_warn_preprint
+ (xstrprintf ("%s: warning: ", gdb_program_name));
+ warning_pre_print = tmp_warn_preprint.get ();
+
+ current_directory = getcwd (NULL, 0);
+ if (current_directory == NULL)
+ perror_warning_with_name (_("error finding working directory"));
/* Set the sysroot path. */
-#ifdef TARGET_SYSTEM_ROOT_RELOCATABLE
- gdb_sysroot = make_relative_prefix (argv[0], BINDIR, TARGET_SYSTEM_ROOT);
- if (gdb_sysroot)
+ gdb_sysroot
+ = xstrdup (relocate_gdb_directory (TARGET_SYSTEM_ROOT,
+ TARGET_SYSTEM_ROOT_RELOCATABLE).c_str ());
+
+ if (*gdb_sysroot == '\0')
{
- struct stat s;
- int res = 0;
+ xfree (gdb_sysroot);
+ gdb_sysroot = xstrdup (TARGET_SYSROOT_PREFIX);
+ }
- if (stat (gdb_sysroot, &s) == 0)
- if (S_ISDIR (s.st_mode))
- res = 1;
+ debug_file_directory
+ = xstrdup (relocate_gdb_directory (DEBUGDIR,
+ DEBUGDIR_RELOCATABLE).c_str ());
- if (res == 0)
- {
- xfree (gdb_sysroot);
- gdb_sysroot = TARGET_SYSTEM_ROOT;
- }
- }
- else
- gdb_sysroot = TARGET_SYSTEM_ROOT;
-#else
-#if defined (TARGET_SYSTEM_ROOT)
- gdb_sysroot = TARGET_SYSTEM_ROOT;
-#else
- gdb_sysroot = "";
+ gdb_datadir = relocate_gdb_directory (GDB_DATADIR,
+ GDB_DATADIR_RELOCATABLE);
+
+#ifdef WITH_PYTHON_LIBDIR
+ python_libdir = relocate_gdb_directory (WITH_PYTHON_LIBDIR,
+ PYTHON_LIBDIR_RELOCATABLE);
#endif
+
+#ifdef RELOC_SRCDIR
+ add_substitute_path_rule (RELOC_SRCDIR,
+ make_relative_prefix (gdb_program_name, BINDIR,
+ RELOC_SRCDIR));
#endif
/* There will always be an interpreter. Either the one passed into
@@ -251,30 +661,34 @@ captured_main (void *data)
OPT_STATISTICS,
OPT_TUI,
OPT_NOWINDOWS,
- OPT_WINDOWS
+ OPT_WINDOWS,
+ OPT_IX,
+ OPT_IEX,
+ OPT_READNOW,
+ OPT_READNEVER
};
+ /* This struct requires int* in the struct, but write_files is a bool.
+ So use this temporary int that we write back after argument parsing. */
+ int write_files_1 = 0;
static struct option long_options[] =
{
- {"async", no_argument, &event_loop_p, 1},
- {"noasync", no_argument, &event_loop_p, 0},
-#if defined(TUI)
{"tui", no_argument, 0, OPT_TUI},
-#endif
- {"xdb", no_argument, &xdb_commands, 1},
{"dbx", no_argument, &dbx_commands, 1},
- {"readnow", no_argument, &readnow_symbol_files, 1},
- {"r", no_argument, &readnow_symbol_files, 1},
+ {"readnow", no_argument, NULL, OPT_READNOW},
+ {"readnever", no_argument, NULL, OPT_READNEVER},
+ {"r", no_argument, NULL, OPT_READNOW},
{"quiet", no_argument, &quiet, 1},
{"q", no_argument, &quiet, 1},
{"silent", no_argument, &quiet, 1},
+ {"nh", no_argument, &inhibit_home_gdbinit, 1},
{"nx", no_argument, &inhibit_gdbinit, 1},
{"n", no_argument, &inhibit_gdbinit, 1},
- {"batch", no_argument, &batch, 1},
- {"epoch", no_argument, &epoch_interface, 1},
+ {"batch-silent", no_argument, 0, 'B'},
+ {"batch", no_argument, &batch_flag, 1},
- /* This is a synonym for "--annotate=1". --annotate is now preferred,
- but keep this here for a long time because people will be running
- emacses which use --fullname. */
+ /* This is a synonym for "--annotate=1". --annotate is now
+ preferred, but keep this here for a long time because people
+ will be running emacses which use --fullname. */
{"fullname", no_argument, 0, 'f'},
{"f", no_argument, 0, 'f'},
@@ -290,8 +704,15 @@ captured_main (void *data)
{"pid", required_argument, 0, 'p'},
{"p", required_argument, 0, 'p'},
{"command", required_argument, 0, 'x'},
+ {"eval-command", required_argument, 0, 'X'},
{"version", no_argument, &print_version, 1},
+ {"configuration", no_argument, &print_configuration, 1},
{"x", required_argument, 0, 'x'},
+ {"ex", required_argument, 0, 'X'},
+ {"init-command", required_argument, 0, OPT_IX},
+ {"init-eval-command", required_argument, 0, OPT_IEX},
+ {"ix", required_argument, 0, OPT_IX},
+ {"iex", required_argument, 0, OPT_IEX},
#ifdef GDBTK
{"tclcommand", required_argument, 0, 'z'},
{"enable-external-editor", no_argument, 0, 'y'},
@@ -302,6 +723,8 @@ captured_main (void *data)
{"i", required_argument, 0, 'i'},
{"directory", required_argument, 0, 'd'},
{"d", required_argument, 0, 'd'},
+ {"data-directory", required_argument, 0, 'D'},
+ {"D", required_argument, 0, 'D'},
{"cd", required_argument, 0, OPT_CD},
{"tty", required_argument, 0, 't'},
{"baud", required_argument, 0, 'b'},
@@ -311,8 +734,10 @@ captured_main (void *data)
{"w", no_argument, NULL, OPT_WINDOWS},
{"windows", no_argument, NULL, OPT_WINDOWS},
{"statistics", no_argument, 0, OPT_STATISTICS},
- {"write", no_argument, &write_files, 1},
+ {"write", no_argument, &write_files_1, 1},
{"args", no_argument, &set_args, 1},
+ {"l", required_argument, 0, 'l'},
+ {"return-child-result", no_argument, &return_child_result, 1},
{0, no_argument, 0, 0}
};
@@ -347,29 +772,34 @@ captured_main (void *data)
break;
case OPT_STATISTICS:
/* Enable the display of both time and space usage. */
- display_time = 1;
- display_space = 1;
+ set_per_command_time (1);
+ set_per_command_space (1);
break;
case OPT_TUI:
/* --tui is equivalent to -i=tui. */
+#ifdef TUI
xfree (interpreter_p);
- interpreter_p = xstrdup ("tui");
+ interpreter_p = xstrdup (INTERP_TUI);
+#else
+ error (_("%s: TUI mode is not supported"), gdb_program_name);
+#endif
break;
case OPT_WINDOWS:
/* FIXME: cagney/2003-03-01: Not sure if this option is
actually useful, and if it is, what it should do. */
- use_windows = 1;
+#ifdef GDBTK
+ /* --windows is equivalent to -i=insight. */
+ xfree (interpreter_p);
+ interpreter_p = xstrdup (INTERP_INSIGHT);
+#endif
break;
case OPT_NOWINDOWS:
/* -nw is equivalent to -i=console. */
xfree (interpreter_p);
interpreter_p = xstrdup (INTERP_CONSOLE);
- use_windows = 0;
break;
case 'f':
annotation_level = 1;
-/* We have probably been invoked from emacs. Disable window interface. */
- use_windows = 0;
break;
case 's':
symarg = optarg;
@@ -381,28 +811,37 @@ captured_main (void *data)
corearg = optarg;
break;
case 'p':
- /* "corearg" is shared by "--core" and "--pid" */
- corearg = optarg;
+ pidarg = optarg;
break;
case 'x':
- cmdarg[ncmd++] = optarg;
- if (ncmd >= cmdsize)
- {
- cmdsize *= 2;
- cmdarg = (char **) xrealloc ((char *) cmdarg,
- cmdsize * sizeof (*cmdarg));
- }
+ cmdarg_vec.emplace_back (CMDARG_FILE, optarg);
+ break;
+ case 'X':
+ cmdarg_vec.emplace_back (CMDARG_COMMAND, optarg);
+ break;
+ case OPT_IX:
+ cmdarg_vec.emplace_back (CMDARG_INIT_FILE, optarg);
+ break;
+ case OPT_IEX:
+ cmdarg_vec.emplace_back (CMDARG_INIT_COMMAND, optarg);
+ break;
+ case 'B':
+ batch_flag = batch_silent = 1;
+ gdb_stdout = new null_file ();
+ break;
+ case 'D':
+ if (optarg[0] == '\0')
+ error (_("%s: empty path for `--data-directory'"),
+ gdb_program_name);
+ set_gdb_data_directory (optarg);
+ gdb_datadir_provided = 1;
break;
#ifdef GDBTK
case 'z':
{
-extern int gdbtk_test (char *);
if (!gdbtk_test (optarg))
- {
- fprintf_unfiltered (gdb_stderr, _("%s: unable to load tclcommand file \"%s\""),
- argv[0], optarg);
- exit (1);
- }
+ error (_("%s: unable to load tclcommand file \"%s\""),
+ gdb_program_name, optarg);
break;
}
case 'y':
@@ -410,6 +849,8 @@ extern int gdbtk_test (char *);
break;
case 'w':
{
+ /* Set the external editor commands when gdb is farming out files
+ to be edited by another program. */
external_editor_command = xstrdup (optarg);
break;
}
@@ -419,13 +860,7 @@ extern int gdbtk_test (char *);
interpreter_p = xstrdup (optarg);
break;
case 'd':
- dirarg[ndir++] = optarg;
- if (ndir >= dirsize)
- {
- dirsize *= 2;
- dirarg = (char **) xrealloc ((char *) dirarg,
- dirsize * sizeof (*dirarg));
- }
+ dirarg.push_back (optarg);
break;
case 't':
ttyarg = optarg;
@@ -435,102 +870,125 @@ extern int gdbtk_test (char *);
break;
case 'b':
{
- int i;
+ int rate;
char *p;
- i = strtol (optarg, &p, 0);
- if (i == 0 && p == optarg)
-
- /* Don't use *_filtered or warning() (which relies on
- current_target) until after initialize_all_files(). */
-
- fprintf_unfiltered
- (gdb_stderr,
- _("warning: could not set baud rate to `%s'.\n"), optarg);
+ rate = strtol (optarg, &p, 0);
+ if (rate == 0 && p == optarg)
+ warning (_("could not set baud rate to `%s'."),
+ optarg);
else
- baud_rate = i;
+ baud_rate = rate;
}
break;
case 'l':
{
- int i;
+ int timeout;
char *p;
- i = strtol (optarg, &p, 0);
- if (i == 0 && p == optarg)
+ timeout = strtol (optarg, &p, 0);
+ if (timeout == 0 && p == optarg)
+ warning (_("could not set timeout limit to `%s'."),
+ optarg);
+ else
+ remote_timeout = timeout;
+ }
+ break;
- /* Don't use *_filtered or warning() (which relies on
- current_target) until after initialize_all_files(). */
+ case OPT_READNOW:
+ {
+ readnow_symbol_files = 1;
+ validate_readnow_readnever ();
+ }
+ break;
- fprintf_unfiltered
- (gdb_stderr,
- _("warning: could not set timeout limit to `%s'.\n"), optarg);
- else
- remote_timeout = i;
+ case OPT_READNEVER:
+ {
+ readnever_symbol_files = 1;
+ validate_readnow_readnever ();
}
break;
case '?':
- fprintf_unfiltered (gdb_stderr,
- _("Use `%s --help' for a complete list of options.\n"),
- argv[0]);
- exit (1);
+ error (_("Use `%s --help' for a complete list of options."),
+ gdb_program_name);
}
}
+ write_files = (write_files_1 != 0);
- /* If --help or --version, disable window interface. */
- if (print_help || print_version)
+ if (batch_flag)
{
- use_windows = 0;
- }
+ quiet = 1;
- if (set_args)
- {
- /* The remaining options are the command-line options for the
- inferior. The first one is the sym/exec file, and the rest
- are arguments. */
- if (optind >= argc)
- {
- fprintf_unfiltered (gdb_stderr,
- _("%s: `--args' specified but no program specified\n"),
- argv[0]);
- exit (1);
- }
- symarg = argv[optind];
- execarg = argv[optind];
- ++optind;
- set_inferior_args_vector (argc - optind, &argv[optind]);
- }
- else
- {
- /* OK, that's all the options. The other arguments are filenames. */
- count = 0;
- for (; optind < argc; optind++)
- switch (++count)
- {
- case 1:
- symarg = argv[optind];
- execarg = argv[optind];
- break;
- case 2:
- /* The documentation says this can be a "ProcID" as well.
- We will try it as both a corefile and a pid. */
- corearg = argv[optind];
- break;
- case 3:
- fprintf_unfiltered (gdb_stderr,
- _("Excess command line arguments ignored. (%s%s)\n"),
- argv[optind], (optind == argc - 1) ? "" : " ...");
- break;
- }
+ /* Disable all output styling when running in batch mode. */
+ cli_styling = 0;
}
- if (batch)
- quiet = 1;
}
- /* Initialize all files. Give the interpreter a chance to take
- control of the console via the init_ui_hook()) */
- gdb_init (argv[0]);
+ save_original_signals_state (quiet);
+
+ /* Try to set up an alternate signal stack for SIGSEGV handlers. */
+ gdb::alternate_signal_stack signal_stack;
+
+ /* Initialize all files. */
+ gdb_init (gdb_program_name);
+
+ /* Now that gdb_init has created the initial inferior, we're in
+ position to set args for that inferior. */
+ if (set_args)
+ {
+ /* The remaining options are the command-line options for the
+ inferior. The first one is the sym/exec file, and the rest
+ are arguments. */
+ if (optind >= argc)
+ error (_("%s: `--args' specified but no program specified"),
+ gdb_program_name);
+
+ symarg = argv[optind];
+ execarg = argv[optind];
+ ++optind;
+ set_inferior_args_vector (argc - optind, &argv[optind]);
+ }
+ else
+ {
+ /* OK, that's all the options. */
+
+ /* The first argument, if specified, is the name of the
+ executable. */
+ if (optind < argc)
+ {
+ symarg = argv[optind];
+ execarg = argv[optind];
+ optind++;
+ }
+
+ /* If the user hasn't already specified a PID or the name of a
+ core file, then a second optional argument is allowed. If
+ present, this argument should be interpreted as either a
+ PID or a core file, whichever works. */
+ if (pidarg == NULL && corearg == NULL && optind < argc)
+ {
+ pid_or_core_arg = argv[optind];
+ optind++;
+ }
+
+ /* Any argument left on the command line is unexpected and
+ will be ignored. Inform the user. */
+ if (optind < argc)
+ fprintf_unfiltered (gdb_stderr,
+ _("Excess command line "
+ "arguments ignored. (%s%s)\n"),
+ argv[optind],
+ (optind == argc - 1) ? "" : " ...");
+ }
+
+ /* Lookup gdbinit files. Note that the gdbinit file name may be
+ overridden during file initialization, so get_init_files should be
+ called after gdb_init. */
+ std::vector system_gdbinit;
+ std::string home_gdbinit;
+ std::string local_gdbinit;
+ get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
/* Do these (and anything which might call wrap_here or *_filtered)
after initialize_all_files() but before the interpreter has been
@@ -539,7 +997,7 @@ extern int gdbtk_test (char *);
if (print_version)
{
- print_gdb_version (gdb_stdout);
+ print_gdb_version (gdb_stdout, false);
wrap_here ("");
printf_filtered ("\n");
exit (0);
@@ -548,7 +1006,14 @@ extern int gdbtk_test (char *);
if (print_help)
{
print_gdb_help (gdb_stdout);
- fputs_unfiltered ("\n", gdb_stdout);
+ exit (0);
+ }
+
+ if (print_configuration)
+ {
+ print_gdb_configuration (gdb_stdout);
+ wrap_here ("");
+ printf_filtered ("\n");
exit (0);
}
@@ -558,33 +1023,20 @@ extern int gdbtk_test (char *);
it isn't encapsulated in MI output. */
if (!quiet && strcmp (interpreter_p, INTERP_MI1) == 0)
{
- /* Print all the junk at the top, with trailing "..." if we are about
- to read a symbol file (possibly slowly). */
- print_gdb_version (gdb_stdout);
+ /* Print all the junk at the top, with trailing "..." if we are
+ about to read a symbol file (possibly slowly). */
+ print_gdb_version (gdb_stdout, true);
if (symarg)
printf_filtered ("..");
wrap_here ("");
- gdb_flush (gdb_stdout); /* Force to screen during slow operations */
+ printf_filtered ("\n");
+ gdb_flush (gdb_stdout); /* Force to screen during slow
+ operations. */
}
-
/* Install the default UI. All the interpreters should have had a
- look at things by now. Initialize the default interpreter. */
-
- {
- /* Find it. */
- struct interp *interp = interp_lookup (interpreter_p);
- if (interp == NULL)
- error ("Interpreter `%s' unrecognized", interpreter_p);
- /* Install it. */
- if (!interp_set (interp))
- {
- fprintf_unfiltered (gdb_stderr,
- "Interpreter `%s' failed to initialize.\n",
- interpreter_p);
- exit (1);
- }
- }
+ look at things by now. Initialize the default interpreter. */
+ set_top_level_interpreter (interpreter_p);
/* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
GDB retain the old MI1 interpreter startup behavior. Output the
@@ -592,61 +1044,71 @@ extern int gdbtk_test (char *);
any sane interpreter. */
if (!quiet && !current_interp_named_p (INTERP_MI1))
{
- /* Print all the junk at the top, with trailing "..." if we are about
- to read a symbol file (possibly slowly). */
- print_gdb_version (gdb_stdout);
+ /* Print all the junk at the top, with trailing "..." if we are
+ about to read a symbol file (possibly slowly). */
+ print_gdb_version (gdb_stdout, true);
if (symarg)
printf_filtered ("..");
wrap_here ("");
- gdb_flush (gdb_stdout); /* Force to screen during slow operations */
+ printf_filtered ("\n");
+ gdb_flush (gdb_stdout); /* Force to screen during slow
+ operations. */
}
- error_pre_print = "\n\n";
- quit_pre_print = error_pre_print;
-
- /* We may get more than one warning, don't double space all of them... */
+ /* Set off error and warning messages with a blank line. */
+ tmp_warn_preprint.reset ();
warning_pre_print = _("\nwarning: ");
+ /* Read and execute the system-wide gdbinit file, if it exists.
+ This is done *before* all the command line arguments are
+ processed; it sets global parameters, which are independent of
+ what file you are debugging or what directory you are in. */
+ if (!system_gdbinit.empty () && !inhibit_gdbinit)
+ {
+ for (const std::string &file : system_gdbinit)
+ ret = catch_command_errors (source_script, file.c_str (), 0);
+ }
+
/* Read and execute $HOME/.gdbinit file, if it exists. This is done
*before* all the command line arguments are processed; it sets
global parameters, which are independent of what file you are
debugging or what directory you are in. */
- homedir = getenv ("HOME");
- if (homedir)
+
+ if (!home_gdbinit.empty () && !inhibit_gdbinit && !inhibit_home_gdbinit)
+ ret = catch_command_errors (source_script, home_gdbinit.c_str (), 0);
+
+ /* Process '-ix' and '-iex' options early. */
+ for (i = 0; i < cmdarg_vec.size (); i++)
{
- homeinit = (char *) alloca (strlen (homedir) +
- strlen (gdbinit) + 10);
- strcpy (homeinit, homedir);
- strcat (homeinit, "/");
- strcat (homeinit, gdbinit);
+ const struct cmdarg &cmdarg_p = cmdarg_vec[i];
- if (!inhibit_gdbinit)
+ switch (cmdarg_p.type)
{
- catch_command_errors (source_command, homeinit, 0, RETURN_MASK_ALL);
+ case CMDARG_INIT_FILE:
+ ret = catch_command_errors (source_script, cmdarg_p.string,
+ !batch_flag);
+ break;
+ case CMDARG_INIT_COMMAND:
+ ret = catch_command_errors (execute_command, cmdarg_p.string,
+ !batch_flag);
+ break;
}
-
- /* Do stats; no need to do them elsewhere since we'll only
- need them if homedir is set. Make sure that they are
- zero in case one of them fails (this guarantees that they
- won't match if either exists). */
-
- memset (&homebuf, 0, sizeof (struct stat));
- memset (&cwdbuf, 0, sizeof (struct stat));
-
- stat (homeinit, &homebuf);
- stat (gdbinit, &cwdbuf); /* We'll only need this if
- homedir was set. */
}
/* Now perform all the actions indicated by the arguments. */
if (cdarg != NULL)
{
- catch_command_errors (cd_command, cdarg, 0, RETURN_MASK_ALL);
+ ret = catch_command_errors (cd_command, cdarg, 0);
}
- for (i = 0; i < ndir; i++)
- catch_command_errors (directory_command, dirarg[i], 0, RETURN_MASK_ALL);
- xfree (dirarg);
+ for (i = 0; i < dirarg.size (); i++)
+ ret = catch_command_errors (directory_switch, dirarg[i], 0);
+
+ /* Skip auto-loading section-specified scripts until we've sourced
+ local_gdbinit (which is often used to augment the source search
+ path). */
+ save_auto_load = global_auto_load;
+ global_auto_load = 0;
if (execarg != NULL
&& symarg != NULL
@@ -654,159 +1116,146 @@ extern int gdbtk_test (char *);
{
/* The exec file and the symbol-file are the same. If we can't
open it, better only print one error message.
- catch_command_errors returns non-zero on success! */
- if (catch_command_errors (exec_file_attach, execarg, !batch, RETURN_MASK_ALL))
- catch_command_errors (symbol_file_add_main, symarg, 0, RETURN_MASK_ALL);
+ catch_command_errors returns non-zero on success! */
+ ret = catch_command_errors (exec_file_attach, execarg,
+ !batch_flag);
+ if (ret != 0)
+ ret = catch_command_errors (symbol_file_add_main_adapter,
+ symarg, !batch_flag);
}
else
{
if (execarg != NULL)
- catch_command_errors (exec_file_attach, execarg, !batch, RETURN_MASK_ALL);
+ ret = catch_command_errors (exec_file_attach, execarg,
+ !batch_flag);
if (symarg != NULL)
- catch_command_errors (symbol_file_add_main, symarg, 0, RETURN_MASK_ALL);
+ ret = catch_command_errors (symbol_file_add_main_adapter,
+ symarg, !batch_flag);
}
- /* After the symbol file has been read, print a newline to get us
- beyond the copyright line... But errors should still set off
- the error message with a (single) blank line. */
- if (!quiet)
- printf_filtered ("\n");
- error_pre_print = "\n";
- quit_pre_print = error_pre_print;
- warning_pre_print = _("\nwarning: ");
+ if (corearg && pidarg)
+ error (_("Can't attach to process and specify "
+ "a core file at the same time."));
if (corearg != NULL)
{
- /* corearg may be either a corefile or a pid.
- If its first character is a digit, try attach first
- and then corefile. Otherwise try corefile first. */
+ ret = catch_command_errors (core_file_command, corearg,
+ !batch_flag);
+ }
+ else if (pidarg != NULL)
+ {
+ ret = catch_command_errors (attach_command, pidarg, !batch_flag);
+ }
+ else if (pid_or_core_arg)
+ {
+ /* The user specified 'gdb program pid' or gdb program core'.
+ If pid_or_core_arg's first character is a digit, try attach
+ first and then corefile. Otherwise try just corefile. */
- if (isdigit (corearg[0]))
+ if (isdigit (pid_or_core_arg[0]))
+ {
+ ret = catch_command_errors (attach_command, pid_or_core_arg,
+ !batch_flag);
+ if (ret == 0)
+ ret = catch_command_errors (core_file_command,
+ pid_or_core_arg,
+ !batch_flag);
+ }
+ else
{
- if (catch_command_errors (attach_command, corearg,
- !batch, RETURN_MASK_ALL) == 0)
- catch_command_errors (core_file_command, corearg,
- !batch, RETURN_MASK_ALL);
+ /* Can't be a pid, better be a corefile. */
+ ret = catch_command_errors (core_file_command,
+ pid_or_core_arg,
+ !batch_flag);
}
- else /* Can't be a pid, better be a corefile. */
- catch_command_errors (core_file_command, corearg,
- !batch, RETURN_MASK_ALL);
}
if (ttyarg != NULL)
- catch_command_errors (tty_command, ttyarg, !batch, RETURN_MASK_ALL);
+ set_inferior_io_terminal (ttyarg);
- /* Error messages should no longer be distinguished with extra output. */
- error_pre_print = NULL;
- quit_pre_print = NULL;
+ /* Error messages should no longer be distinguished with extra output. */
warning_pre_print = _("warning: ");
/* Read the .gdbinit file in the current directory, *if* it isn't
the same as the $HOME/.gdbinit file (it should exist, also). */
-
- if (!homedir
- || memcmp ((char *) &homebuf, (char *) &cwdbuf, sizeof (struct stat)))
- if (!inhibit_gdbinit)
- {
- catch_command_errors (source_command, gdbinit, 0, RETURN_MASK_ALL);
- }
-
- for (i = 0; i < ncmd; i++)
+ if (!local_gdbinit.empty ())
{
-#if 0
- /* NOTE: cagney/1999-11-03: SET_TOP_LEVEL() was a macro that
- expanded into a call to setjmp(). */
- if (!SET_TOP_LEVEL ()) /* NB: This is #if 0'd out */
+ auto_load_local_gdbinit_pathname
+ = gdb_realpath (local_gdbinit.c_str ()).release ();
+
+ if (!inhibit_gdbinit && auto_load_local_gdbinit
+ && file_is_auto_load_safe (local_gdbinit.c_str (),
+ _("auto-load: Loading .gdbinit "
+ "file \"%s\".\n"),
+ local_gdbinit.c_str ()))
{
- /* NOTE: I am commenting this out, because it is not clear
- where this feature is used. It is very old and
- undocumented. ezannoni: 1999-05-04 */
-#if 0
- if (cmdarg[i][0] == '-' && cmdarg[i][1] == '\0')
- read_command_file (stdin);
- else
-#endif
- source_command (cmdarg[i], !batch);
- do_cleanups (ALL_CLEANUPS);
+ auto_load_local_gdbinit_loaded = 1;
+
+ ret = catch_command_errors (source_script, local_gdbinit.c_str (), 0);
}
-#endif
- catch_command_errors (source_command, cmdarg[i], !batch, RETURN_MASK_ALL);
}
- xfree (cmdarg);
- /* Read in the old history after all the command files have been read. */
- init_history ();
+ /* Now that all .gdbinit's have been read and all -d options have been
+ processed, we can read any scripts mentioned in SYMARG.
+ We wait until now because it is common to add to the source search
+ path in local_gdbinit. */
+ global_auto_load = save_auto_load;
+ for (objfile *objfile : current_program_space->objfiles ())
+ load_auto_scripts_for_objfile (objfile);
- if (batch)
+ /* Process '-x' and '-ex' options. */
+ for (i = 0; i < cmdarg_vec.size (); i++)
{
- /* We have hit the end of the batch file. */
- exit (0);
- }
-
- /* Do any host- or target-specific hacks. This is used for i960 targets
- to force the user to set a nindy target and spec its parameters. */
-
-#ifdef BEFORE_MAIN_LOOP_HOOK
- BEFORE_MAIN_LOOP_HOOK;
-#endif
+ const struct cmdarg &cmdarg_p = cmdarg_vec[i];
- END_PROGRESS (argv[0]);
+ switch (cmdarg_p.type)
+ {
+ case CMDARG_FILE:
+ ret = catch_command_errors (source_script, cmdarg_p.string,
+ !batch_flag);
+ break;
+ case CMDARG_COMMAND:
+ ret = catch_command_errors (execute_command, cmdarg_p.string,
+ !batch_flag);
+ break;
+ }
+ }
- /* Show time and/or space usage. */
+ /* Read in the old history after all the command files have been
+ read. */
+ init_history ();
- if (display_time)
+ if (batch_flag)
{
- long init_time = get_run_time () - time_at_startup;
+ int error_status = EXIT_FAILURE;
+ int *exit_arg = ret == 0 ? &error_status : NULL;
- printf_unfiltered (_("Startup time: %ld.%06ld\n"),
- init_time / 1000000, init_time % 1000000);
+ /* We have hit the end of the batch file. */
+ quit_force (exit_arg, 0);
}
+}
- if (display_space)
- {
-#ifdef HAVE_SBRK
- extern char **environ;
- char *lim = (char *) sbrk (0);
+static void
+captured_main (void *data)
+{
+ struct captured_main_args *context = (struct captured_main_args *) data;
- printf_unfiltered (_("Startup size: data size %ld\n"),
- (long) (lim - (char *) &environ));
-#endif
- }
+ captured_main_1 (context);
-#if 0
- /* FIXME: cagney/1999-11-06: The original main loop was like: */
- while (1)
- {
- if (!SET_TOP_LEVEL ())
- {
- do_cleanups (ALL_CLEANUPS); /* Do complete cleanup */
- /* GUIs generally have their own command loop, mainloop, or whatever.
- This is a good place to gain control because many error
- conditions will end up here via longjmp(). */
- if (command_loop_hook)
- command_loop_hook ();
- else
- command_loop ();
- quit_command ((char *) 0, instream == stdin);
- }
- }
- /* NOTE: If the command_loop() returned normally, the loop would
- attempt to exit by calling the function quit_command(). That
- function would either call exit() or throw an error returning
- control to SET_TOP_LEVEL. */
- /* NOTE: The function do_cleanups() was called once each time round
- the loop. The usefulness of the call isn't clear. If an error
- was thrown, everything would have already been cleaned up. If
- command_loop() returned normally and quit_command() was called,
- either exit() or error() (again cleaning up) would be called. */
-#endif
/* NOTE: cagney/1999-11-07: There is probably no reason for not
moving this loop and the code found in captured_command_loop()
into the command_loop() proper. The main thing holding back that
- change - SET_TOP_LEVEL() - has been eliminated. */
+ change - SET_TOP_LEVEL() - has been eliminated. */
while (1)
{
- catch_errors (captured_command_loop, 0, "", RETURN_MASK_ALL);
+ try
+ {
+ captured_command_loop ();
+ }
+ catch (const gdb_exception &ex)
+ {
+ exception_print (gdb_stderr, ex);
+ }
}
/* No exit -- exit is through quit_command. */
}
@@ -814,8 +1263,15 @@ extern int gdbtk_test (char *);
int
gdb_main (struct captured_main_args *args)
{
- use_windows = args->use_windows;
- catch_errors (captured_main, args, "", RETURN_MASK_ALL);
+ try
+ {
+ captured_main (args);
+ }
+ catch (const gdb_exception &ex)
+ {
+ exception_print (gdb_stderr, ex);
+ }
+
/* The only way to end up here is by an error (normal exit is
handled by quit_force()), hence always return an error status. */
return 1;
@@ -829,51 +1285,55 @@ gdb_main (struct captured_main_args *args)
static void
print_gdb_help (struct ui_file *stream)
{
+ std::vector system_gdbinit;
+ std::string home_gdbinit;
+ std::string local_gdbinit;
+
+ get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
+
+ /* Note: The options in the list below are only approximately sorted
+ in the alphabetical order, so as to group closely related options
+ together. */
fputs_unfiltered (_("\
This is the GNU debugger. Usage:\n\n\
gdb [options] [executable-file [core-file or process-id]]\n\
gdb [options] --args executable-file [inferior-arguments ...]\n\n\
-Options:\n\n\
"), stream);
fputs_unfiltered (_("\
+Selection of debuggee and its files:\n\n\
--args Arguments after executable-file are passed to inferior\n\
-"), stream);
- fputs_unfiltered (_("\
- --[no]async Enable (disable) asynchronous version of CLI\n\
-"), stream);
- fputs_unfiltered (_("\
- -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
- --batch Exit after processing options.\n\
- --cd=DIR Change current directory to DIR.\n\
- --command=FILE Execute GDB commands from FILE.\n\
--core=COREFILE Analyze the core dump COREFILE.\n\
+ --exec=EXECFILE Use EXECFILE as the executable.\n\
--pid=PID Attach to running process PID.\n\
+ --directory=DIR Search for source files in DIR.\n\
+ --se=FILE Use FILE as symbol file and executable file.\n\
+ --symbols=SYMFILE Read symbols from SYMFILE.\n\
+ --readnow Fully read symbol files on first access.\n\
+ --readnever Do not read symbol files.\n\
+ --write Set writing into executable and core files.\n\n\
"), stream);
fputs_unfiltered (_("\
- --dbx DBX compatibility mode.\n\
- --directory=DIR Search for source files in DIR.\n\
- --epoch Output information used by epoch emacs-GDB interface.\n\
- --exec=EXECFILE Use EXECFILE as the executable.\n\
- --fullname Output information used by emacs-GDB interface.\n\
- --help Print this message.\n\
+Initial commands and command files:\n\n\
+ --command=FILE, -x Execute GDB commands from FILE.\n\
+ --init-command=FILE, -ix\n\
+ Like -x but execute commands before loading inferior.\n\
+ --eval-command=COMMAND, -ex\n\
+ Execute a single GDB command.\n\
+ May be used multiple times and in conjunction\n\
+ with --command.\n\
+ --init-eval-command=COMMAND, -iex\n\
+ Like -ex but before loading inferior.\n\
+ --nh Do not read ~/.gdbinit.\n\
+ --nx Do not read any .gdbinit files in any directory.\n\n\
"), stream);
fputs_unfiltered (_("\
+Output and user interface control:\n\n\
+ --fullname Output information used by emacs-GDB interface.\n\
--interpreter=INTERP\n\
Select a specific interpreter / user interface\n\
-"), stream);
- fputs_unfiltered (_("\
- --mapped Use mapped symbol files if supported on this system.\n\
- --nw Do not use a window interface.\n\
- --nx Do not read "), stream);
- fputs_unfiltered (gdbinit, stream);
- fputs_unfiltered (_(" file.\n\
- --quiet Do not print version number on startup.\n\
- --readnow Fully read symbol files on first access.\n\
-"), stream);
- fputs_unfiltered (_("\
- --se=FILE Use FILE as symbol file and executable file.\n\
- --symbols=SYMFILE Read symbols from SYMFILE.\n\
--tty=TTY Use TTY for input/output by the program being debugged.\n\
+ -w Use the GUI interface.\n\
+ --nw Do not use the GUI interface.\n\
"), stream);
#if defined(TUI)
fputs_unfiltered (_("\
@@ -881,14 +1341,61 @@ Options:\n\n\
"), stream);
#endif
fputs_unfiltered (_("\
- --version Print version information and then exit.\n\
- -w Use a window interface.\n\
- --write Set writing into executable and core files.\n\
- --xdb XDB compatibility mode.\n\
+ --dbx DBX compatibility mode.\n\
+ -q, --quiet, --silent\n\
+ Do not print version number on startup.\n\n\
+"), stream);
+ fputs_unfiltered (_("\
+Operating modes:\n\n\
+ --batch Exit after processing options.\n\
+ --batch-silent Like --batch, but suppress all gdb stdout output.\n\
+ --return-child-result\n\
+ GDB exit code will be the child's exit code.\n\
+ --configuration Print details about GDB configuration and then exit.\n\
+ --help Print this message and then exit.\n\
+ --version Print version information and then exit.\n\n\
+Remote debugging options:\n\n\
+ -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
+ -l TIMEOUT Set timeout in seconds for remote debugging.\n\n\
+Other options:\n\n\
+ --cd=DIR Change current directory to DIR.\n\
+ --data-directory=DIR, -D\n\
+ Set GDB's data-directory to DIR.\n\
"), stream);
fputs_unfiltered (_("\n\
+At startup, GDB reads the following init files and executes their commands:\n\
+"), stream);
+ if (!system_gdbinit.empty ())
+ {
+ std::string output;
+ for (size_t idx = 0; idx < system_gdbinit.size (); ++idx)
+ {
+ output += system_gdbinit[idx];
+ if (idx < system_gdbinit.size () - 1)
+ output += ", ";
+ }
+ fprintf_unfiltered (stream, _("\
+ * system-wide init files: %s\n\
+"), output.c_str ());
+ }
+ if (!home_gdbinit.empty ())
+ fprintf_unfiltered (stream, _("\
+ * user-specific init file: %s\n\
+"), home_gdbinit.c_str ());
+ if (!local_gdbinit.empty ())
+ fprintf_unfiltered (stream, _("\
+ * local init file (see also 'set auto-load local-gdbinit'): ./%s\n\
+"), local_gdbinit.c_str ());
+ fputs_unfiltered (_("\n\
For more information, type \"help\" from within GDB, or consult the\n\
GDB manual (available as on-line info or a printed manual).\n\
-Report bugs to \"bug-gdb@gnu.org\".\
"), stream);
+ if (REPORT_BUGS_TO[0] && stream == gdb_stdout)
+ fprintf_unfiltered (stream, _("\n\
+Report bugs to %s.\n\
+"), REPORT_BUGS_TO);
+ if (stream == gdb_stdout)
+ fprintf_unfiltered (stream, _("\n\
+You can ask GDB-related questions on the GDB users mailing list\n\
+(gdb@sourceware.org) or on GDB's IRC channel (#gdb on Freenode).\n"));
}