diff options
Diffstat (limited to 'gdb/main.c')
-rw-r--r-- | gdb/main.c | 820 |
1 files changed, 0 insertions, 820 deletions
diff --git a/gdb/main.c b/gdb/main.c deleted file mode 100644 index 61479e8..0000000 --- a/gdb/main.c +++ /dev/null @@ -1,820 +0,0 @@ -/* 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 - 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 - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - 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. */ - -#include "defs.h" -#include "top.h" -#include "target.h" -#include "inferior.h" -#include "symfile.h" -#include "gdbcore.h" - -#include "getopt.h" - -#include <sys/types.h> -#include "gdb_stat.h" -#include <ctype.h> - -#include "gdb_string.h" -#include "event-loop.h" -#include "ui-out.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; - -/* Has an interpreter been specified and if so, which. */ -char *interpreter_p; - -/* Whether this is the command line version or not */ -int tui_version = 0; - -/* Whether xdb commands will be handled */ -int xdb_commands = 0; - -/* Whether dbx commands will be handled */ -int dbx_commands = 0; - -struct ui_file *gdb_stdout; -struct ui_file *gdb_stderr; -struct ui_file *gdb_stdlog; -struct ui_file *gdb_stdtarg; - -/* Used to initialize error() - defined in utils.c */ - -extern void error_init (void); - -/* Whether to enable writing into executable and core files */ -extern int write_files; - -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. */ - -extern char *external_editor_command; - -/* Call command_loop. If it happens to return, pass that through as a - non-zero return status. */ - -static int -captured_command_loop (void *data) -{ - if (command_loop_hook == NULL) - command_loop (); - else - command_loop_hook (); - /* 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); - /* 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); - return 1; -} - -struct captured_main_args - { - int argc; - char **argv; - }; - -static int -captured_main (void *data) -{ - 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 *corearg = NULL; - char *cdarg = NULL; - char *ttyarg = NULL; - - /* These are static so that we can take their address in an initializer. */ - static int print_help; - static int print_version; - - /* 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; - - register int i; - - long time_at_startup = get_run_time (); - -#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) - setlocale (LC_MESSAGES, ""); -#endif -#if defined (HAVE_SETLOCALE) - setlocale (LC_CTYPE, ""); -#endif - bindtextdomain (PACKAGE, LOCALEDIR); - textdomain (PACKAGE); - - START_PROGRESS (argv[0], 0); - -#ifdef MPW - /* Do all Mac-specific setup. */ - mac_init (); -#endif /* MPW */ - - /* This needs to happen before the first use of malloc. */ - init_malloc ((PTR) NULL); - -#if defined (ALIGN_STACK_ON_STARTUP) - i = (int) &count & 0x3; - if (i != 0) - alloca (4 - i); -#endif - - 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 */ - - /* initialize error() */ - error_init (); - - /* Parse arguments and options. */ - { - int c; - /* When var field is 0, use flag field to record the equivalent - short option (or arbitrary numbers starting at 10 for those - with no equivalent). */ - 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, &tui_version, 1}, -#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}, - {"mapped", no_argument, &mapped_symbol_files, 1}, - {"m", no_argument, &mapped_symbol_files, 1}, - {"quiet", no_argument, &quiet, 1}, - {"q", no_argument, &quiet, 1}, - {"silent", no_argument, &quiet, 1}, - {"nx", no_argument, &inhibit_gdbinit, 1}, - {"n", no_argument, &inhibit_gdbinit, 1}, - {"batch", no_argument, &batch, 1}, - {"epoch", no_argument, &epoch_interface, 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. */ - {"fullname", no_argument, 0, 'f'}, - {"f", no_argument, 0, 'f'}, - - {"annotate", required_argument, 0, 12}, - {"help", no_argument, &print_help, 1}, - {"se", required_argument, 0, 10}, - {"symbols", required_argument, 0, 's'}, - {"s", required_argument, 0, 's'}, - {"exec", required_argument, 0, 'e'}, - {"e", required_argument, 0, 'e'}, - {"core", required_argument, 0, 'c'}, - {"c", required_argument, 0, 'c'}, - {"pid", required_argument, 0, 'p'}, - {"p", required_argument, 0, 'p'}, - {"command", required_argument, 0, 'x'}, - {"version", no_argument, &print_version, 1}, - {"x", required_argument, 0, 'x'}, -#ifdef GDBTK - {"tclcommand", required_argument, 0, 'z'}, - {"enable-external-editor", no_argument, 0, 'y'}, - {"editor-command", required_argument, 0, 'w'}, -#endif - {"ui", required_argument, 0, 'i'}, - {"interpreter", required_argument, 0, 'i'}, - {"i", required_argument, 0, 'i'}, - {"directory", required_argument, 0, 'd'}, - {"d", required_argument, 0, 'd'}, - {"cd", required_argument, 0, 11}, - {"tty", required_argument, 0, 't'}, - {"baud", required_argument, 0, 'b'}, - {"b", required_argument, 0, 'b'}, - {"nw", no_argument, &use_windows, 0}, - {"nowindows", no_argument, &use_windows, 0}, - {"w", no_argument, &use_windows, 1}, - {"windows", no_argument, &use_windows, 1}, - {"statistics", no_argument, 0, 13}, - {"write", no_argument, &write_files, 1}, - {"args", no_argument, &set_args, 1}, -/* Allow machine descriptions to add more options... */ -#ifdef ADDITIONAL_OPTIONS - ADDITIONAL_OPTIONS -#endif - {0, no_argument, 0, 0} - }; - - while (1) - { - int option_index; - - c = getopt_long_only (argc, argv, "", - long_options, &option_index); - if (c == EOF || set_args) - break; - - /* Long option that takes an argument. */ - if (c == 0 && long_options[option_index].flag == 0) - c = long_options[option_index].val; - - switch (c) - { - case 0: - /* Long option that just sets a flag. */ - break; - case 10: - symarg = optarg; - execarg = optarg; - break; - case 11: - cdarg = optarg; - break; - case 12: - /* FIXME: what if the syntax is wrong (e.g. not digits)? */ - annotation_level = atoi (optarg); - break; - case 13: - /* Enable the display of both time and space usage. */ - display_time = 1; - display_space = 1; - break; - case 'f': - annotation_level = 1; -/* We have probably been invoked from emacs. Disable window interface. */ - use_windows = 0; - break; - case 's': - symarg = optarg; - break; - case 'e': - execarg = optarg; - break; - case 'c': - corearg = optarg; - break; - case 'p': - /* "corearg" is shared by "--core" and "--pid" */ - corearg = optarg; - break; - case 'x': - cmdarg[ncmd++] = optarg; - if (ncmd >= cmdsize) - { - cmdsize *= 2; - cmdarg = (char **) xrealloc ((char *) cmdarg, - cmdsize * sizeof (*cmdarg)); - } - 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); - } - break; - } - case 'y': - /* Backwards compatibility only. */ - break; - case 'w': - { - external_editor_command = xstrdup (optarg); - break; - } -#endif /* GDBTK */ - case 'i': - interpreter_p = optarg; - break; - case 'd': - dirarg[ndir++] = optarg; - if (ndir >= dirsize) - { - dirsize *= 2; - dirarg = (char **) xrealloc ((char *) dirarg, - dirsize * sizeof (*dirarg)); - } - break; - case 't': - ttyarg = optarg; - break; - case 'q': - quiet = 1; - break; - case 'b': - { - int i; - 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); - else - baud_rate = i; - } - case 'l': - { - int i; - 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 timeout limit to `%s'.\n"), optarg); - else - remote_timeout = i; - } - break; - -#ifdef ADDITIONAL_OPTION_CASES - ADDITIONAL_OPTION_CASES -#endif - case '?': - fprintf_unfiltered (gdb_stderr, - _("Use `%s --help' for a complete list of options.\n"), - argv[0]); - exit (1); - } - } - - /* If --help or --version, disable window interface. */ - if (print_help || print_version) - { - use_windows = 0; -#ifdef TUI - /* Disable the TUI as well. */ - tui_version = 0; -#endif - } - -#ifdef TUI - /* An explicit --tui flag overrides the default UI, which is the - window system. */ - if (tui_version) - use_windows = 0; -#endif - - 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; - } - } - 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]); - - /* Do these (and anything which might call wrap_here or *_filtered) - after initialize_all_files. */ - if (print_version) - { - print_gdb_version (gdb_stdout); - wrap_here (""); - printf_filtered ("\n"); - exit (0); - } - - if (print_help) - { - print_gdb_help (gdb_stdout); - fputs_unfiltered ("\n", gdb_stdout); - exit (0); - } - - if (!quiet) - { - /* 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); - if (symarg) - printf_filtered (".."); - wrap_here (""); - 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... */ - warning_pre_print = _("\nwarning: "); - - /* 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) - { - homeinit = (char *) alloca (strlen (homedir) + - strlen (gdbinit) + 10); - strcpy (homeinit, homedir); - strcat (homeinit, "/"); - strcat (homeinit, gdbinit); - - if (!inhibit_gdbinit) - { - catch_command_errors (source_command, 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. */ - } - - /* Now perform all the actions indicated by the arguments. */ - if (cdarg != NULL) - { - catch_command_errors (cd_command, cdarg, 0, RETURN_MASK_ALL); - } - - for (i = 0; i < ndir; i++) - catch_command_errors (directory_command, dirarg[i], 0, RETURN_MASK_ALL); - xfree (dirarg); - - if (execarg != NULL - && symarg != NULL - && STREQ (execarg, symarg)) - { - /* 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); - } - 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); - } - - /* 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 != 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. */ - - if (isdigit (corearg[0])) - { - if (catch_command_errors (attach_command, corearg, - !batch, RETURN_MASK_ALL) == 0) - catch_command_errors (core_file_command, corearg, - !batch, RETURN_MASK_ALL); - } - 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); - -#ifdef ADDITIONAL_OPTION_HANDLER - ADDITIONAL_OPTION_HANDLER; -#endif - - /* Error messages should no longer be distinguished with extra output. */ - error_pre_print = NULL; - quit_pre_print = NULL; - 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 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_command (cmdarg[i], !batch); - do_cleanups (ALL_CLEANUPS); - } -#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 (); - - if (batch) - { - /* 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 - - END_PROGRESS (argv[0]); - - /* Show time and/or space usage. */ - - if (display_time) - { - long init_time = get_run_time () - time_at_startup; - - printf_unfiltered (_("Startup time: %ld.%06ld\n"), - init_time / 1000000, init_time % 1000000); - } - - if (display_space) - { -#ifdef HAVE_SBRK - extern char **environ; - char *lim = (char *) sbrk (0); - - printf_unfiltered (_("Startup size: data size %ld\n"), - (long) (lim - (char *) &environ)); -#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 (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. */ - while (1) - { - catch_errors (captured_command_loop, 0, "", RETURN_MASK_ALL); - } - /* No exit -- exit is through quit_command. */ -} - -int -main (int argc, char **argv) -{ - struct captured_main_args args; - args.argc = argc; - args.argv = argv; - catch_errors (captured_main, &args, "", RETURN_MASK_ALL); - return 0; -} - - -/* Don't use *_filtered for printing help. We don't want to prompt - for continue no matter how small the screen or how much we're going - to print. */ - -static void -print_gdb_help (struct ui_file *stream) -{ - 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 (_("\ - --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\ - --pid=PID Attach to running process PID.\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\ -"), stream); - fputs_unfiltered (_("\ - --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\ -"), stream); -#if defined(TUI) - fputs_unfiltered (_("\ - --tui Use a terminal user interface.\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\ -"), stream); -#ifdef ADDITIONAL_OPTION_HELP - fputs_unfiltered (ADDITIONAL_OPTION_HELP, stream); -#endif - 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); -} |