/* 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
- Free Software Foundation, Inc.
+ 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008,
+ 2009 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,
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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "top.h"
#include "interps.h"
#include "main.h"
+#include "source.h"
+
/* If nonzero, display time usage both at startup and for each command. */
int display_time;
/* System root path, used to find libraries etc. */
char *gdb_sysroot = 0;
+/* GDB datadir, used to store data files. */
+char *gdb_datadir = 0;
+
struct ui_file *gdb_stdout;
struct ui_file *gdb_stderr;
struct ui_file *gdb_stdlog;
/* 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. */
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;
/* 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;
/* 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;
lim_at_start = (char *) sbrk (0);
#endif
-#if defined (ALIGN_STACK_ON_STARTUP)
- i = (int) &count & 0x3;
- if (i != 0)
- alloca (4 - i);
-#endif
-
cmdsize = 1;
cmdarg = (struct cmdarg *) xmalloc (cmdsize * sizeof (*cmdarg));
ncmd = 0;
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 RELOC_SRCDIR
+ add_substitute_path_rule (RELOC_SRCDIR,
+ make_relative_prefix (argv[0], BINDIR,
+ RELOC_SRCDIR));
#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;
- }
- }
-
/* There will always be an interpreter. Either the one passed into
this captured main, or one specified by the user at start up, or
the console. Initialize the interpreter to the one requested by
};
static struct option long_options[] =
{
-#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},
break;
case OPT_TUI:
/* --tui is equivalent to -i=tui. */
+#ifdef TUI
xfree (interpreter_p);
interpreter_p = xstrdup (INTERP_TUI);
+#else
+ fprintf_unfiltered (gdb_stderr,
+ _("%s: TUI mode is not supported\n"),
+ argv[0]);
+ exit (1);
+#endif
break;
case OPT_WINDOWS:
/* FIXME: cagney/2003-03-01: Not sure if this option is
corearg = optarg;
break;
case 'p':
- /* "corearg" is shared by "--core" and "--pid" */
- corearg = optarg;
+ pidarg = optarg;
break;
case 'x':
cmdarg[ncmd].type = CMDARG_FILE;
}
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;
- }
+ /* 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)
quiet = 1;
control of the console via the deprecated_init_ui_hook (). */
gdb_init (argv[0]);
+ /* 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
if (interp == NULL)
error (_("Interpreter `%s' unrecognized"), interpreter_p);
/* Install it. */
- if (!interp_set (interp))
+ if (!interp_set (interp, 1))
{
fprintf_unfiltered (gdb_stderr,
"Interpreter `%s' failed to initialize.\n",
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)
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 (symbol_file_add_main, symarg, !batch, RETURN_MASK_ALL);
}
else
{
if (execarg != NULL)
catch_command_errors (exec_file_attach, execarg, !batch, 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, RETURN_MASK_ALL);
}
+ if (corearg && pidarg)
+ error (_("\
+Can't attach to process and specify a core file at the same time."));
+
if (corearg != NULL)
+ catch_command_errors (core_file_command, corearg,
+ !batch, RETURN_MASK_ALL);
+ else if (pidarg != NULL)
+ catch_command_errors (attach_command, pidarg,
+ !batch, RETURN_MASK_ALL);
+ else if (pid_or_core_arg)
{
- /* 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. */
+ /* 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]))
{
- if (catch_command_errors (attach_command, corearg,
+ if (catch_command_errors (attach_command, pid_or_core_arg,
!batch, RETURN_MASK_ALL) == 0)
- catch_command_errors (core_file_command, corearg,
+ catch_command_errors (core_file_command, pid_or_core_arg,
!batch, RETURN_MASK_ALL);
}
- else /* Can't be a pid, better be a corefile. */
- catch_command_errors (core_file_command, corearg,
+ else /* Can't be a pid, better be a corefile. */
+ catch_command_errors (core_file_command, pid_or_core_arg,
!batch, RETURN_MASK_ALL);
}
/* 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_script, gdbinit, 0, RETURN_MASK_ALL);
- }
+ if (local_gdbinit && !inhibit_gdbinit)
+ catch_command_errors (source_script, local_gdbinit, 0, RETURN_MASK_ALL);
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);
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);
}
projects / external / binutils.git / blobdiff