/* Top level stuff for GDB, the GNU debugger.
Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
- 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008
- Free Software Foundation, Inc.
+ 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008,
+ 2009, 2010 Free Software Foundation, Inc.
This file is part of GDB.
#include "interps.h"
#include "main.h"
+#include "source.h"
+#include "cli/cli-cmds.h"
+#include "python/python.h"
/* If nonzero, display time usage both at startup and for each command. */
/* System root path, used to find libraries etc. */
char *gdb_sysroot = 0;
+/* GDB datadir, used to store data files. */
+char *gdb_datadir = 0;
+
+/* If gdb was configured with --with-python=/path,
+ the possibly relocated path to python's lib directory. */
+char *python_libdir = 0;
+
struct ui_file *gdb_stdout;
struct ui_file *gdb_stderr;
struct ui_file *gdb_stdlog;
struct ui_file *gdb_stdtarg;
struct ui_file *gdb_stdtargerr;
+/* True if --batch or --batch-silent was seen. */
+int batch_flag = 0;
+
/* Support for the --batch-silent option. */
int batch_silent = 0;
/* Whether to enable writing into executable and core files */
extern int write_files;
+/* GDB as it has been invoked from the command line (i.e. argv[0]). */
+static char *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
extern char *external_editor_command;
+/* 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. FLAG is true if the value is relocatable, false
+ otherwise. Returns a newly allocated string; this may return NULL
+ under the same conditions as make_relative_prefix. */
+static char *
+relocate_path (const char *progname, const char *initial, int flag)
+{
+ if (flag)
+ return make_relative_prefix (progname, BINDIR, initial);
+ return xstrdup (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. This
+ function always returns a newly-allocated string. */
+static char *
+relocate_directory (const char *progname, const char *initial, int flag)
+{
+ char *dir;
+
+ dir = relocate_path (progname, initial, flag);
+ if (dir)
+ {
+ struct stat s;
+
+ if (stat (dir, &s) != 0 || !S_ISDIR (s.st_mode))
+ {
+ xfree (dir);
+ dir = NULL;
+ }
+ }
+ if (!dir)
+ dir = xstrdup (initial);
+
+ /* Canonicalize the directory. */
+ if (*dir)
+ {
+ char *canon_sysroot = lrealpath (dir);
+
+ if (canon_sysroot)
+ {
+ xfree (dir);
+ dir = canon_sysroot;
+ }
+ }
+
+ return dir;
+}
+
+/* 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
+ NULL. */
+static void
+get_init_files (char **system_gdbinit,
+ char **home_gdbinit,
+ char **local_gdbinit)
+{
+ static char *sysgdbinit = NULL;
+ static char *homeinit = NULL;
+ static char *localinit = NULL;
+ static int initialized = 0;
+
+ if (!initialized)
+ {
+ struct stat homebuf, cwdbuf, s;
+ char *homedir, *relocated_sysgdbinit;
+
+ if (SYSTEM_GDBINIT[0])
+ {
+ relocated_sysgdbinit = relocate_path (gdb_program_name,
+ SYSTEM_GDBINIT,
+ SYSTEM_GDBINIT_RELOCATABLE);
+ if (relocated_sysgdbinit && stat (relocated_sysgdbinit, &s) == 0)
+ sysgdbinit = relocated_sysgdbinit;
+ else
+ xfree (relocated_sysgdbinit);
+ }
+
+ 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 = xstrprintf ("%s/%s", homedir, gdbinit);
+ if (stat (homeinit, &homebuf) != 0)
+ {
+ xfree (homeinit);
+ homeinit = NULL;
+ }
+ }
+
+ if (stat (gdbinit, &cwdbuf) == 0)
+ {
+ if (!homeinit
+ || memcmp ((char *) &homebuf, (char *) &cwdbuf,
+ sizeof (struct stat)))
+ localinit = gdbinit;
+ }
+
+ initialized = 1;
+ }
+
+ *system_gdbinit = sysgdbinit;
+ *home_gdbinit = homeinit;
+ *local_gdbinit = localinit;
+}
+
/* Call command_loop. If it happens to return, pass that through as a
non-zero return status. */
int argc = context->argc;
char **argv = context->argv;
static int quiet = 0;
- static int batch = 0;
static int set_args = 0;
/* Pointers to various arguments from command line. */
/* Number of elements used. */
int ndir;
- struct stat homebuf, cwdbuf;
- char *homedir;
+ /* gdb init files. */
+ char *system_gdbinit;
+ char *home_gdbinit;
+ char *local_gdbinit;
int i;
+ int save_auto_load;
long time_at_startup = get_run_time ();
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_stdtargerr = gdb_stderr; /* for moment */
gdb_stdtargin = gdb_stdin; /* for moment */
- /* Set the sysroot path. */
-#ifdef TARGET_SYSTEM_ROOT_RELOCATABLE
- gdb_sysroot = make_relative_prefix (argv[0], BINDIR, TARGET_SYSTEM_ROOT);
- if (gdb_sysroot)
- {
- struct stat s;
- int res = 0;
-
- if (stat (gdb_sysroot, &s) == 0)
- if (S_ISDIR (s.st_mode))
- res = 1;
+ gdb_program_name = xstrdup (argv[0]);
- if (res == 0)
- {
- xfree (gdb_sysroot);
- gdb_sysroot = xstrdup (TARGET_SYSTEM_ROOT);
- }
- }
- else
- gdb_sysroot = xstrdup (TARGET_SYSTEM_ROOT);
-#else
- gdb_sysroot = xstrdup (TARGET_SYSTEM_ROOT);
-#endif
+ if (! getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)))
+ /* Don't use *_filtered or warning() (which relies on
+ current_target) until after initialize_all_files(). */
+ fprintf_unfiltered (gdb_stderr,
+ _("%s: warning: error finding working directory: %s\n"),
+ argv[0], safe_strerror (errno));
+
+ current_directory = gdb_dirbuf;
- /* Canonicalize the sysroot path. */
- if (*gdb_sysroot)
- {
- char *canon_sysroot = lrealpath (gdb_sysroot);
- if (canon_sysroot)
- {
- xfree (gdb_sysroot);
- gdb_sysroot = canon_sysroot;
- }
- }
+ /* Set the sysroot path. */
+ gdb_sysroot = relocate_directory (argv[0], TARGET_SYSTEM_ROOT,
+ TARGET_SYSTEM_ROOT_RELOCATABLE);
-#ifdef DEBUGDIR_RELOCATABLE
- debug_file_directory = make_relative_prefix (argv[0], BINDIR, DEBUGDIR);
- if (debug_file_directory)
- {
- struct stat s;
- int res = 0;
+ debug_file_directory = relocate_directory (argv[0], DEBUGDIR,
+ DEBUGDIR_RELOCATABLE);
- if (stat (debug_file_directory, &s) == 0)
- if (S_ISDIR (s.st_mode))
- res = 1;
+ gdb_datadir = relocate_directory (argv[0], GDB_DATADIR,
+ GDB_DATADIR_RELOCATABLE);
- if (res == 0)
- {
- xfree (debug_file_directory);
- debug_file_directory = xstrdup (DEBUGDIR);
- }
- }
- else
- debug_file_directory = xstrdup (DEBUGDIR);
-#else
- debug_file_directory = xstrdup (DEBUGDIR);
+#ifdef WITH_PYTHON_PATH
+ /* For later use in helping Python find itself. */
+ python_libdir = relocate_directory (argv[0],
+ concat (WITH_PYTHON_PATH,
+ SLASH_STRING, "lib", NULL),
+ PYTHON_PATH_RELOCATABLE);
#endif
- /* Canonicalize the debugfile path. */
- if (*debug_file_directory)
- {
- char *canon_debug = lrealpath (debug_file_directory);
- if (canon_debug)
- {
- xfree (debug_file_directory);
- debug_file_directory = canon_debug;
- }
- }
+#ifdef RELOC_SRCDIR
+ add_substitute_path_rule (RELOC_SRCDIR,
+ make_relative_prefix (argv[0], BINDIR,
+ RELOC_SRCDIR));
+#endif
/* There will always be an interpreter. Either the one passed into
this captured main, or one specified by the user at start up, or
{"nx", no_argument, &inhibit_gdbinit, 1},
{"n", no_argument, &inhibit_gdbinit, 1},
{"batch-silent", no_argument, 0, 'B'},
- {"batch", no_argument, &batch, 1},
+ {"batch", no_argument, &batch_flag, 1},
{"epoch", no_argument, &epoch_interface, 1},
/* This is a synonym for "--annotate=1". --annotate is now preferred,
{"statistics", no_argument, 0, OPT_STATISTICS},
{"write", no_argument, &write_files, 1},
{"args", no_argument, &set_args, 1},
- {"l", required_argument, 0, 'l'},
+ {"l", required_argument, 0, 'l'},
{"return-child-result", no_argument, &return_child_result, 1},
{0, no_argument, 0, 0}
};
}
break;
case 'B':
- batch = batch_silent = 1;
+ batch_flag = batch_silent = 1;
gdb_stdout = ui_file_new();
break;
#ifdef GDBTK
use_windows = 0;
}
- 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 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) ? "" : " ...");
- }
- if (batch)
+ if (batch_flag)
quiet = 1;
}
control of the console via the deprecated_init_ui_hook (). */
gdb_init (argv[0]);
+ /* 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)
+ {
+ 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 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 overriden
+ during file initialization, so get_init_files should be called after
+ gdb_init. */
+ 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
installed. Otherwize the help/version messages will be eaten by
{
/* Find it. */
struct interp *interp = interp_lookup (interpreter_p);
+
if (interp == NULL)
error (_("Interpreter `%s' unrecognized"), interpreter_p);
/* Install it. */
quit_pre_print = error_pre_print;
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 && !inhibit_gdbinit)
+ catch_command_errors (source_script, system_gdbinit, 0, RETURN_MASK_ALL);
+
/* 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)
- {
- char *homeinit = xstrprintf ("%s/%s", homedir, gdbinit);
-
- if (!inhibit_gdbinit)
- {
- catch_command_errors (source_script, homeinit, 0, RETURN_MASK_ALL);
- }
- /* 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. */
- xfree (homeinit);
- }
+ if (home_gdbinit && !inhibit_gdbinit)
+ catch_command_errors (source_script, home_gdbinit, 0, RETURN_MASK_ALL);
/* Now perform all the actions indicated by the arguments. */
if (cdarg != NULL)
catch_command_errors (directory_switch, dirarg[i], 0, RETURN_MASK_ALL);
xfree (dirarg);
+ /* 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 = gdbpy_global_auto_load;
+ gdbpy_global_auto_load = 0;
+
if (execarg != NULL
&& symarg != NULL
&& strcmp (execarg, symarg) == 0)
/* 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);
+ if (catch_command_errors (exec_file_attach, execarg, !batch_flag, RETURN_MASK_ALL))
+ catch_command_errors (symbol_file_add_main, symarg, !batch_flag, RETURN_MASK_ALL);
}
else
{
if (execarg != NULL)
- catch_command_errors (exec_file_attach, execarg, !batch, RETURN_MASK_ALL);
+ catch_command_errors (exec_file_attach, execarg, !batch_flag, RETURN_MASK_ALL);
if (symarg != NULL)
- catch_command_errors (symbol_file_add_main, symarg, 0, RETURN_MASK_ALL);
+ catch_command_errors (symbol_file_add_main, symarg, !batch_flag, RETURN_MASK_ALL);
}
if (corearg && pidarg)
if (corearg != NULL)
catch_command_errors (core_file_command, corearg,
- !batch, RETURN_MASK_ALL);
+ !batch_flag, RETURN_MASK_ALL);
else if (pidarg != NULL)
catch_command_errors (attach_command, pidarg,
- !batch, RETURN_MASK_ALL);
+ !batch_flag, RETURN_MASK_ALL);
else if (pid_or_core_arg)
{
/* The user specified 'gdb program pid' or gdb program core'.
if (isdigit (pid_or_core_arg[0]))
{
if (catch_command_errors (attach_command, pid_or_core_arg,
- !batch, RETURN_MASK_ALL) == 0)
+ !batch_flag, RETURN_MASK_ALL) == 0)
catch_command_errors (core_file_command, pid_or_core_arg,
- !batch, RETURN_MASK_ALL);
+ !batch_flag, RETURN_MASK_ALL);
}
else /* Can't be a pid, better be a corefile. */
catch_command_errors (core_file_command, pid_or_core_arg,
- !batch, RETURN_MASK_ALL);
+ !batch_flag, 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;
/* Read the .gdbinit file in the current directory, *if* it isn't
the same as the $HOME/.gdbinit file (it should exist, also). */
+ if (local_gdbinit && !inhibit_gdbinit)
+ catch_command_errors (source_script, local_gdbinit, 0, RETURN_MASK_ALL);
- if (!homedir
- || memcmp ((char *) &homebuf, (char *) &cwdbuf, sizeof (struct stat)))
- if (!inhibit_gdbinit)
- {
- catch_command_errors (source_script, gdbinit, 0, RETURN_MASK_ALL);
- }
+ /* 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. */
+ gdbpy_global_auto_load = save_auto_load;
+ if (symfile_objfile != NULL)
+ load_auto_scripts_for_objfile (symfile_objfile);
for (i = 0; i < ncmd; i++)
{
-#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 */
- {
- /* 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_script (cmdarg[i], !batch);
- do_cleanups (ALL_CLEANUPS);
- }
-#endif
if (cmdarg[i].type == CMDARG_FILE)
catch_command_errors (source_script, cmdarg[i].string,
- !batch, RETURN_MASK_ALL);
+ !batch_flag, RETURN_MASK_ALL);
else /* cmdarg[i].type == CMDARG_COMMAND */
catch_command_errors (execute_command, cmdarg[i].string,
- !batch, RETURN_MASK_ALL);
+ !batch_flag, RETURN_MASK_ALL);
}
xfree (cmdarg);
/* Read in the old history after all the command files have been read. */
init_history ();
- if (batch)
+ if (batch_flag)
{
/* We have hit the end of the batch file. */
quit_force (NULL, 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
-
/* Show time and/or space usage. */
if (display_time)
#endif
}
-#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 (deprecated_command_loop_hook)
- deprecated_command_loop_hook ();
- else
- deprecated_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
static void
print_gdb_help (struct ui_file *stream)
{
+ char *system_gdbinit;
+ char *home_gdbinit;
+ char *local_gdbinit;
+
+ get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
+
fputs_unfiltered (_("\
This is the GNU debugger. Usage:\n\n\
gdb [options] [executable-file [core-file or process-id]]\n\
--xdb XDB compatibility mode.\n\
"), stream);
fputs_unfiltered (_("\n\
+At startup, GDB reads the following init files and executes their commands:\n\
+"), stream);
+ if (system_gdbinit)
+ fprintf_unfiltered (stream, _("\
+ * system-wide init file: %s\n\
+"), system_gdbinit);
+ if (home_gdbinit)
+ fprintf_unfiltered (stream, _("\
+ * user-specific init file: %s\n\
+"), home_gdbinit);
+ if (local_gdbinit)
+ fprintf_unfiltered (stream, _("\
+ * local init file: ./%s\n\
+"), local_gdbinit);
+ 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, _("\
+Report bugs to \"%s\".\n\
+"), REPORT_BUGS_TO);
}