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Diffstat (limited to 'gdb/RCS/main.c,v')
| -rw-r--r-- | gdb/RCS/main.c,v | 1110 |
1 files changed, 0 insertions, 1110 deletions
diff --git a/gdb/RCS/main.c,v b/gdb/RCS/main.c,v deleted file mode 100644 index ae6615f7318..00000000000 --- a/gdb/RCS/main.c,v +++ /dev/null @@ -1,1110 +0,0 @@ -head 1.2; -access ; -symbols RMS-has:1.2; -locks ; strict; -comment @ * @; - - -1.2 -date 88.01.26.05.09.12; author gnu; state Exp; -branches ; -next 1.1; - -1.1 -date 88.01.21.04.23.16; author gnu; state Exp; -branches ; -next ; - - -desc -@Original from RMS development on wheaties, 20Jan88 -@ - - -1.2 -log -@Add <sys/types.h> -@ -text -@/* Top level for GDB, the GNU debugger. - Copyright (C) 1986, 1987 Free Software Foundation, Inc. - -GDB is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY. No author or distributor accepts responsibility to anyone -for the consequences of using it or for whether it serves any -particular purpose or works at all, unless he says so in writing. -Refer to the GDB General Public License for full details. - -Everyone is granted permission to copy, modify and redistribute GDB, -but only under the conditions described in the GDB General Public -License. A copy of this license is supposed to have been given to you -along with GDB so you can know your rights and responsibilities. It -should be in a file named COPYING. Among other things, the copyright -notice and this notice must be preserved on all copies. - -In other words, go ahead and share GDB, but don't try to stop -anyone else from sharing it farther. Help stamp out software hoarding! -*/ - -#include <sys/types.h> -#include <sys/file.h> -#include <stdio.h> -#include <setjmp.h> -#include <signal.h> -#include <sys/param.h> -#include "defs.h" -#include "command.h" -#include "param.h" - -#ifdef SET_STACK_LIMIT_HUGE -#include <sys/time.h> -#include <sys/resource.h> -#endif - -/* Version number of GDB, as a string. */ - -extern char *version; - -/* Chain containing all defined commands. */ - -struct cmd_list_element *cmdlist; - -/* Chain containing all defined info subcommands. */ - -struct cmd_list_element *infolist; - -/* stdio stream that command input is being read from. */ - -FILE *instream; - -/* Nonzero if we should refrain from using an X window. */ - -int inhibit_windows = 0; - -/* Function to call before reading a command, if nonzero. - The function receives two args: an input stream, - and a prompt string. */ - -void (*window_hook) (); - -void free_command_lines (); -char *read_line (); -static void initialize_main (); -void command_loop (); -static void source_command (); -void print_gdb_version (); - -/* gdb prints this when reading a command interactively */ -static char *prompt; - -/* Buffer used for reading command lines, and the size - allocated for it so far. */ - -char *line; -int linesize; - -/* This is how `error' returns to command level. */ - -jmp_buf to_top_level; - -return_to_top_level () -{ - quit_flag = 0; - immediate_quit = 0; - clear_breakpoint_commands (); - clear_momentary_breakpoints (); - do_cleanups (0); - longjmp (to_top_level, 1); -} - -main (argc, argv, envp) - int argc; - char **argv; - char **envp; -{ - extern void request_quit (); - int count; - int inhibit_gdbinit = 0; - int quiet = 0; - int batch = 0; - register int i; - - quit_flag = 0; - linesize = 100; - line = (char *) xmalloc (linesize); - instream = stdin; - -#ifdef SET_STACK_LIMIT_HUGE - { - struct rlimit rlim; - - /* Set the stack limit huge so that alloca (particularly stringtab - * in dbxread.c) does not fail. */ - getrlimit (RLIMIT_STACK, &rlim); - rlim.rlim_cur = rlim.rlim_max; - setrlimit (RLIMIT_STACK, &rlim); - } -#endif /* SET_STACK_LIMIT_HUGE */ - - /* Look for flag arguments. */ - - for (i = 1; i < argc; i++) - { - if (!strcmp (argv[i], "-q") || !strcmp (argv[i], "-quiet")) - quiet = 1; - else if (!strcmp (argv[i], "-nx")) - inhibit_gdbinit = 1; - else if (!strcmp (argv[i], "-nw")) - inhibit_windows = 1; - else if (!strcmp (argv[i], "-batch")) - batch = 1, quiet = 1; - else if (argv[i][0] == '-') - i++; - } - - /* Run the init function of each source file */ - - initialize_all_files (); - initialize_main (); /* But that omits this file! Do it now */ - - signal (SIGINT, request_quit); - signal (SIGQUIT, SIG_IGN); - - if (!quiet) - print_gdb_version (); - - /* Process the command line arguments. */ - - count = 0; - for (i = 1; i < argc; i++) - { - register char *arg = argv[i]; - /* Args starting with - say what to do with the following arg - as a filename. */ - if (arg[0] == '-') - { - extern void exec_file_command (), symbol_file_command (); - extern void core_file_command (), directory_command (); - extern void tty_command (); - - if (!strcmp (arg, "-q") || !strcmp (arg, "-nx") - || !strcmp (arg, "quiet") || !strcmp (arg, "-batch")) - /* Already processed above */ - continue; - - if (++i == argc) - fprintf (stderr, "No argument follows \"%s\".\n", arg); - if (!setjmp (to_top_level)) - { - /* -s foo: get syms from foo. -e foo: execute foo. - -se foo: do both with foo. -c foo: use foo as core dump. */ - if (!strcmp (arg, "-se")) - { - exec_file_command (argv[i], !batch); - symbol_file_command (argv[i], !batch); - } - else if (!strcmp (arg, "-s") || !strcmp (arg, "-symbols")) - symbol_file_command (argv[i], !batch); - else if (!strcmp (arg, "-e") || !strcmp (arg, "-exec")) - exec_file_command (argv[i], !batch); - else if (!strcmp (arg, "-c") || !strcmp (arg, "-core")) - core_file_command (argv[i], !batch); - /* -x foo: execute commands from foo. */ - else if (!strcmp (arg, "-x") || !strcmp (arg, "-command") - || !strcmp (arg, "-commands")) - source_command (argv[i]); - /* -d foo: add directory `foo' to source-file directory - search-list */ - else if (!strcmp (arg, "-d") || !strcmp (arg, "-dir") - || !strcmp (arg, "-directory")) - directory_command (argv[i], 0); - /* -t /def/ttyp1: use /dev/ttyp1 for inferior I/O. */ - else if (!strcmp (arg, "-t") || !strcmp (arg, "-tty")) - tty_command (argv[i], 0); - else - error ("Unknown command-line switch: \"%s\"\n", arg); - } - } - else - { - /* Args not thus accounted for - are treated as, first, the symbol/executable file - and, second, the core dump file. */ - count++; - if (!setjmp (to_top_level)) - switch (count) - { - case 1: - exec_file_command (arg, !batch); - symbol_file_command (arg, !batch); - break; - - case 2: - core_file_command (arg, !batch); - break; - - case 3: - fprintf (stderr, "Excess command line args ignored. (%s%s)\n", - arg, (i == argc - 1) ? "" : " ..."); - } - } - } - - /* Read init file, if it exists in home directory */ - if (getenv ("HOME")) - { - char *s; - s = (char *) xmalloc (strlen (getenv ("HOME")) + 10); - strcpy (s, getenv ("HOME")); - strcat (s, "/.gdbinit"); - if (!inhibit_gdbinit && access (s, R_OK) == 0) - if (!setjmp (to_top_level)) - source_command (s); - } - - /* Read init file, if it exists in current directory. */ - if (!inhibit_gdbinit && access (".gdbinit", R_OK) == 0) - if (!setjmp (to_top_level)) - source_command (".gdbinit"); - - if (batch) - fatal ("Attempt to read commands from stdin in batch mode."); - - if (!quiet) - printf ("Type \"help\" for a list of commands.\n"); - - /* The command loop. */ - - while (1) - { - if (!setjmp (to_top_level)) - command_loop (); - clearerr (stdin); /* Don't get hung if C-d is typed. */ - } -} - -/* Execute the line P as a command. - Pass FROM_TTY as second argument to the defining function. */ - -void -execute_command (p, from_tty) - char *p; - int from_tty; -{ - register struct cmd_list_element *c; - register struct command_line *cmdlines; - - free_all_values (); - while (*p == ' ' || *p == '\t') p++; - if (*p) - { - c = lookup_cmd (&p, cmdlist, "", 0); - if (c->function == 0) - error ("That is not a command, just a help topic."); - else if (c->class == (int) class_user) - { - if (*p) - error ("User-defined commands cannot take command-line arguments: \"%s\"", - p); - cmdlines = (struct command_line *) c->function; - if (cmdlines == (struct command_line *) 0) - /* Null command */ - return; - while (cmdlines) - { - execute_command (cmdlines->line, 0); - cmdlines = cmdlines->next; - } - } - else - /* Pass null arg rather than an empty one. */ - (*c->function) (*p ? p : 0, from_tty); - } -} - -static void -do_nothing () -{ -} - -/* Read commands from `instream' and execute them - until end of file. */ -void -command_loop () -{ - struct cleanup *old_chain; - while (!feof (instream)) - { - if (instream == stdin) - printf ("%s", prompt); - fflush (stdout); - - if (window_hook && instream == stdin) - (*window_hook) (instream, prompt); - - quit_flag = 0; - old_chain = make_cleanup (do_nothing, 0); - execute_command (read_line (instream == stdin), instream == stdin); - /* Do any commands attached to breakpoint we stopped at. */ - do_breakpoint_commands (); - do_cleanups (old_chain); - } -} - -static void -stop_sig () -{ - signal (SIGTSTP, SIG_DFL); - sigsetmask (0); - kill (getpid (), SIGTSTP); - signal (SIGTSTP, stop_sig); - printf ("%s", prompt); - fflush (stdout); - - /* Forget about any previous command -- null line now will do nothing. */ - *line = 0; -} - -/* Commands call this if they do not want to be repeated by null lines. */ - -void -dont_repeat () -{ - *line = 0; -} - -/* Read one line from the command input stream `instream' - into the buffer `line' (whose current length is `linesize'). - The buffer is made bigger as necessary. - Returns the address of the start of the line. */ - -char * -read_line (repeat) - int repeat; -{ - register char *p = line; - register char *p1; - register int c; - char *nline; - - /* Control-C quits instantly if typed while in this loop - since it should not wait until the user types a newline. */ - immediate_quit++; - signal (SIGTSTP, stop_sig); - - while (1) - { - c = fgetc (instream); - if (c == -1 || c == '\n') - break; - if (p - line == linesize - 1) - { - linesize *= 2; - nline = (char *) xrealloc (line, linesize); - p += nline - line; - line = nline; - } - *p++ = c; - } - - signal (SIGTSTP, SIG_DFL); - immediate_quit--; - - /* If we just got an empty line, and that is supposed - to repeat the previous command, leave the last input unchanged. */ - if (p == line && repeat) - return line; - - /* If line is a comment, clear it out. */ - p1 = line; - while ((c = *p1) == ' ' || c == '\t') p1++; - if (c == '#') - p = line; - - *p = 0; - - return line; -} - -/* Read lines from the input stream - and accumulate them in a chain of struct command_line's - which is then returned. */ - -struct command_line * -read_command_lines () -{ - struct command_line *first = 0; - register struct command_line *next, *tail = 0; - register char *p, *p1; - struct cleanup *old_chain = 0; - - while (1) - { - dont_repeat (); - p = read_line (1); - /* Remove leading and trailing blanks. */ - while (*p == ' ' || *p == '\t') p++; - p1 = p + strlen (p); - while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t')) p1--; - - /* Is this "end"? */ - if (p1 - p == 3 && !strncmp (p, "end", 3)) - break; - - /* No => add this line to the chain of command lines. */ - next = (struct command_line *) xmalloc (sizeof (struct command_line)); - next->line = savestring (p, p1 - p); - next->next = 0; - if (tail) - { - tail->next = next; - } - else - { - /* We just read the first line. - From now on, arrange to throw away the lines we have - if we quit or get an error while inside this function. */ - first = next; - old_chain = make_cleanup (free_command_lines, &first); - } - tail = next; - } - - dont_repeat (); - - /* Now we are about to return the chain to our caller, - so freeing it becomes his responsibility. */ - if (first) - discard_cleanups (old_chain); - return first; -} - -/* Free a chain of struct command_line's. */ - -void -free_command_lines (lptr) - struct command_line **lptr; -{ - register struct command_line *l = *lptr; - register struct command_line *next; - - while (l) - { - next = l->next; - free (l->line); - free (l); - l = next; - } -} - -/* Add an element to the list of info subcommands. */ - -void -add_info (name, fun, doc) - char *name; - void (*fun) (); - char *doc; -{ - add_cmd (name, 0, fun, doc, &infolist); -} - -/* Add an alias to the list of info subcommands. */ - -void -add_info_alias (name, oldname, abbrev_flag) - char *name; - char *oldname; - int abbrev_flag; -{ - add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist); -} - -/* The "info" command is defined as a prefix, with allow_unknown = 0. - Therefore, its own definition is called only for "info" with no args. */ - -static void -info_command () -{ - printf ("\"info\" must be followed by the name of an info command.\n"); - help_cmd (0, infolist, "info ", -1, stdout); -} - -/* Add an element to the list of commands. */ - -void -add_com (name, class, fun, doc) - char *name; - int class; - void (*fun) (); - char *doc; -{ - add_cmd (name, class, fun, doc, &cmdlist); -} - -/* Add an alias or abbreviation command to the list of commands. */ - -void -add_com_alias (name, oldname, class, abbrev_flag) - char *name; - char *oldname; - int class; - int abbrev_flag; -{ - add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist); -} - -void -error_no_arg (why) - char *why; -{ - error ("Argument required (%s).", why); -} - -static void -help_command (command, from_tty) - char *command; - int from_tty; /* Ignored */ -{ - help_cmd (command, cmdlist, "", -2, stdout); -} - -static void -validate_comname (comname) - char *comname; -{ - register char *p; - - if (comname == 0) - error_no_arg ("name of command to define"); - - p = comname; - while (*p) - { - if (!(*p >= 'A' && *p <= 'Z') - && !(*p >= 'a' && *p <= 'z') - && !(*p >= '1' && *p <= '9') - && *p != '-') - error ("Junk in argument list: \"%s\"", p); - p++; - } -} - -static void -define_command (comname, from_tty) - char *comname; - int from_tty; -{ - register struct command_line *cmds; - register struct cmd_list_element *c; - char *tem = comname; - - validate_comname (comname); - - c = lookup_cmd (&tem, cmdlist, "", -1); - if (c) - { - if (c->class == (int) class_user || c->class == (int) class_alias) - tem = "Redefine command \"%s\"? "; - else - tem = "Really redefine built-in command \"%s\"? "; - if (!query (tem, comname)) - error ("Command \"%s\" not redefined.", comname); - } - - if (from_tty) - printf ("Type commands for definition of \"%s\".\n\ -End with a line saying just \"end\".\n", comname); - - comname = savestring (comname, strlen (comname)); - - cmds = read_command_lines (); - - if (c && c->class == (int) class_user) - free_command_lines (&c->function); - - add_com (comname, class_user, cmds, - (c && c->class == (int) class_user) - ? c->doc : savestring ("User-defined.", 13)); -} - -static void -document_command (comname, from_tty) - char *comname; - int from_tty; -{ - struct command_line *doclines; - register struct cmd_list_element *c; - char *tem = comname; - - validate_comname (comname); - - c = lookup_cmd (&tem, cmdlist, "", 0); - - if (c->class != (int) class_user) - error ("Command \"%s\" is built-in.", comname); - - if (from_tty) - printf ("Type documentation for \"%s\".\n\ -End with a line saying just \"end\".\n", comname); - - doclines = read_command_lines (); - - if (c->doc) free (c->doc); - - { - register struct command_line *cl1; - register int len = 0; - - for (cl1 = doclines; cl1; cl1 = cl1->next) - len += strlen (cl1->line) + 1; - - c->doc = (char *) xmalloc (len + 1); - *c->doc = 0; - - for (cl1 = doclines; cl1; cl1 = cl1->next) - { - strcat (c->doc, cl1->line); - if (cl1->next) - strcat (c->doc, "\n"); - } - } - - free_command_lines (&doclines); -} - -static void -copying_info () -{ - immediate_quit++; - printf (" GDB GENERAL PUBLIC LICENSE\n\ -\n\ - Copyright (C) 1986 Richard M. Stallman\n\ - Everyone is permitted to copy and distribute verbatim copies\n\ - of this license, but changing it is not allowed.\n\ -\n\ - The license agreements of most software companies keep you at the\n\ -mercy of those companies. By contrast, our general public license is\n\ -intended to give everyone the right to share GDB. To make sure that\n\ -you get the rights we want you to have, we need to make restrictions\n\ -that forbid anyone to deny you these rights or to ask you to surrender\n\ -the rights. Hence this license agreement.\n\ -\n\ - Specifically, we want to make sure that you have the right to give\n\ -away copies of GDB, that you receive source code or else can get it\n\ -if you want it, that you can change GDB or use pieces of it in new\n\ -free programs, and that you know you can do these things.\n\ ---Type Return to print more--"); - fflush (stdout); - read_line (); - - printf ("\ - To make sure that everyone has such rights, we have to forbid you to\n\ -deprive anyone else of these rights. For example, if you distribute\n\ -copies of GDB, you must give the recipients all the rights that you\n\ -have. You must make sure that they, too, receive or can get the\n\ -source code. And you must tell them their rights.\n\ -\n\ - Also, for our own protection, we must make certain that everyone\n\ -finds out that there is no warranty for GDB. If GDB is modified by\n\ -someone else and passed on, we want its recipients to know that what\n\ -they have is not what we distributed, so that any problems introduced\n\ -by others will not reflect on our reputation.\n\ -\n\ - Therefore we (Richard Stallman and the Free Software Foundation,\n\ -Inc.) make the following terms which say what you must do to be\n\ -allowed to distribute or change GDB.\n\ ---Type Return to print more--"); - fflush (stdout); - read_line (); - - printf ("\ - COPYING POLICIES\n\ -\n\ - 1. You may copy and distribute verbatim copies of GDB source code as\n\ -you receive it, in any medium, provided that you conspicuously and\n\ -appropriately publish on each copy a valid copyright notice \"Copyright\n\ -\(C) 1987 Free Software Foundation, Inc.\" (or with the year updated if\n\ -that is appropriate); keep intact the notices on all files that refer\n\ -to this License Agreement and to the absence of any warranty; and give\n\ -any other recipients of the GDB program a copy of this License\n\ -Agreement along with the program. You may charge a distribution fee\n\ -for the physical act of transferring a copy.\n\ -\n\ - 2. You may modify your copy or copies of GDB or any portion of it,\n\ -and copy and distribute such modifications under the terms of\n\ -Paragraph 1 above, provided that you also do the following:\n\ -\n\ - a) cause the modified files to carry prominent notices stating\n\ - that you changed the files and the date of any change; and\n\ ---Type Return to print more--"); - fflush (stdout); - read_line (); - - printf ("\ - b) cause the whole of any work that you distribute or publish,\n\ - that in whole or in part contains or is a derivative of GDB\n\ - or any part thereof, to be licensed to all third parties on terms\n\ - identical to those contained in this License Agreement (except that\n\ - you may choose to grant more extensive warranty protection to third\n\ - parties, at your option).\n\ -\n"); - printf ("\ - c) if the modified program serves as a debugger, cause it\n\ - when started running in the simplest and usual way, to print\n\ - an announcement including a valid copyright notice\n\ - \"Copyright (C) 1987 Free Software Foundation, Inc.\" (or with\n\ - the year updated if appropriate), saying that there\n\ - is no warranty (or else, saying that you provide\n\ - a warranty) and that users may redistribute the program under\n\ - these conditions, and telling the user how to view a copy of\n\ - this License Agreement.\n\ -\n\ - d) You may charge a distribution fee for the physical act of\n\ - transferring a copy, and you may at your option offer warranty\n\ - protection in exchange for a fee.\n\ ---Type Return to print more--"); - fflush (stdout); - read_line (); - - printf ("\ - 3. You may copy and distribute GDB or any portion of it in\n\ -compiled, executable or object code form under the terms of Paragraphs\n\ -1 and 2 above provided that you do the following:\n\ -\n\ - a) cause each such copy to be accompanied by the\n\ - corresponding machine-readable source code, which must\n\ - be distributed under the terms of Paragraphs 1 and 2 above; or,\n\ -\n\ - b) cause each such copy to be accompanied by a\n\ - written offer, with no time limit, to give any third party\n\ - free (except for a nominal shipping charge) a machine readable\n\ - copy of the corresponding source code, to be distributed\n\ - under the terms of Paragraphs 1 and 2 above; or,\n\n"); - - printf ("\ - c) in the case of a recipient of GDB in compiled, executable\n\ - or object code form (without the corresponding source code) you\n\ - shall cause copies you distribute to be accompanied by a copy\n\ - of the written offer of source code which you received along\n\ - with the copy you received.\n\ ---Type Return to print more--"); - fflush (stdout); - read_line (); - - printf ("\ - 4. You may not copy, sublicense, distribute or transfer GDB\n\ -except as expressly provided under this License Agreement. Any attempt\n\ -otherwise to copy, sublicense, distribute or transfer GDB is void and\n\ -your rights to use the program under this License agreement shall be\n\ -automatically terminated. However, parties who have received computer\n\ -software programs from you with this License Agreement will not have\n\ -their licenses terminated so long as such parties remain in full compliance.\n\ -\n\ - 5. If you wish to incorporate parts of GDB into other free\n\ -programs whose distribution conditions are different, write to the Free\n\ -Software Foundation at 675 Mass Ave, Cambridge, MA 02139. We have not yet\n\ -worked out a simple rule that can be stated here, but we will often permit\n\ -this. We will be guided by the two goals of preserving the free status of\n\ -all derivatives of our free software and of promoting the sharing and reuse\n\ -of software.\n\ -\n\ -In other words, go ahead and share GDB, but don't try to stop\n\ -anyone else from sharing it farther. Help stamp out software hoarding!\n\ -"); - immediate_quit--; -} - -static void -warranty_info () -{ - immediate_quit++; - printf (" NO WARRANTY\n\ -\n\ - BECAUSE GDB IS LICENSED FREE OF CHARGE, WE PROVIDE ABSOLUTELY NO\n\ -WARRANTY, TO THE EXTENT PERMITTED BY APPLICABLE STATE LAW. EXCEPT\n\ -WHEN OTHERWISE STATED IN WRITING, FREE SOFTWARE FOUNDATION, INC,\n\ -RICHARD M. STALLMAN AND/OR OTHER PARTIES PROVIDE GDB \"AS IS\" WITHOUT\n\ -WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT\n\ -LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n\ -A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND\n\ -PERFORMANCE OF GDB IS WITH YOU. SHOULD GDB PROVE DEFECTIVE, YOU\n\ -ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.\n\n"); - - printf ("\ - IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW WILL RICHARD M.\n\ -STALLMAN, THE FREE SOFTWARE FOUNDATION, INC., AND/OR ANY OTHER PARTY\n\ -WHO MAY MODIFY AND REDISTRIBUTE GDB, BE LIABLE TO\n\ -YOU FOR DAMAGES, INCLUDING ANY LOST PROFITS, LOST MONIES, OR OTHER\n\ -SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR\n\ -INABILITY TO USE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA\n\ -BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY THIRD PARTIES OR A\n\ -FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS) GDB, EVEN\n\ -IF YOU HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, OR FOR\n\ -ANY CLAIM BY ANY OTHER PARTY.\n"); - immediate_quit--; -} - -static void -print_gdb_version () -{ - printf ("GDB %s, Copyright (C) 1987 Free Software Foundation, Inc.\n\ -There is ABSOLUTELY NO WARRANTY for GDB; type \"info warranty\" for details.\n\ -GDB is free software and you are welcome to distribute copies of it\n\ - under certain conditions; type \"info copying\" to see the conditions.\n", - version); -} - -static void -version_info () -{ - immediate_quit++; - print_gdb_version (); - immediate_quit--; -} - -static void -set_prompt_command (text) - char *text; -{ - char *p, *q; - register int c; - char *new; - - if (text == 0) - error_no_arg ("string to which to set prompt"); - - new = (char *) xmalloc (strlen (text) + 2); - p = text; q = new; - while (c = *p++) - { - if (c == '\\') - { - /* \ at end of argument is used after spaces - so they won't be lost. */ - if (*p == 0) - break; - c = parse_escape (&p); - if (c == 0) - break; /* C loses */ - else if (c > 0) - *q++ = c; - } - else - *q++ = c; - } - if (*(p - 1) != '\\') - *q++ = ' '; - *q++ = '\0'; - new = (char *) xrealloc (new, q - new); - free (prompt); - prompt = new; -} - -static void -quit_command () -{ - if (have_inferior_p ()) - { - if (query ("The program is running. Quit anyway? ")) - { - /* Prevent any warning message from reopen_exec_file, in case - we have a core file that's inconsistent with the exec file. */ - exec_file_command (0, 0); - kill_inferior (); - } - else - error ("Not confirmed."); - } - exit (0); -} - -int -input_from_terminal_p () -{ - return instream == stdin; -} - -static void -pwd_command (arg, from_tty) - char *arg; - int from_tty; -{ - char buf[MAXPATHLEN]; - if (arg) error ("The \"pwd\" command does not take an argument: %s", arg); - printf ("Working directory %s.\n", getwd (buf)); -} - -static void -cd_command (dir, from_tty) - char *dir; - int from_tty; -{ - if (dir == 0) - error_no_arg ("new working directory"); - - if (chdir (dir) < 0) - perror_with_name (dir); - if (from_tty) - pwd_command ((char *) 0, 1); -} - - -/* Clean up on error during a "source" command. - Close the file opened by the command - and restore the previous input stream. */ - -static void -source_cleanup (stream) - FILE *stream; -{ - fclose (instream); - instream = stream; -} - -static void -source_command (file) - char *file; -{ - FILE *stream; - struct cleanup *cleanups; - - if (file == 0) - error_no_arg ("file to read commands from"); - - stream = fopen (file, "r"); - if (stream == 0) - perror_with_name (file); - - cleanups = make_cleanup (source_cleanup, instream); - - instream = stream; - - command_loop (); - - do_cleanups (cleanups); -} - -static void -echo_command (text) - char *text; -{ - char *p = text; - register int c; - - if (text) - while (c = *p++) - { - if (c == '\\') - { - /* \ at end of argument is used after spaces - so they won't be lost. */ - if (*p == 0) - return; - - c = parse_escape (&p); - if (c >= 0) - fputc (c, stdout); - } - else - fputc (c, stdout); - } -} - -static void -dump_me_command () -{ - if (query ("Should GDB dump core? ")) - { - signal (SIGQUIT, SIG_DFL); - kill (getpid (), SIGQUIT); - } -} - - -static void -initialize_main () -{ - prompt = savestring ("(gdb) ", 6); - - /* Define the classes of commands. - They will appear in the help list in the reverse of this order. */ - - add_cmd ("obscure", class_obscure, 0, "Obscure features.", &cmdlist); - add_cmd ("alias", class_alias, 0, "Aliases of other commands.", &cmdlist); - add_cmd ("user", class_user, 0, "User-defined commands.\n\ -The commands in this class are those defined by the user.\n\ -Use the \"define\" command to define a command.", &cmdlist); - add_cmd ("support", class_support, 0, "Support facilities.", &cmdlist); - add_cmd ("status", class_info, 0, "Status inquiries.", &cmdlist); - add_cmd ("files", class_files, 0, "Specifying and examining files.", &cmdlist); - add_cmd ("breakpoints", class_breakpoint, 0, "Making program stop at certain points.", &cmdlist); - add_cmd ("data", class_vars, 0, "Examining data.", &cmdlist); - add_cmd ("stack", class_stack, 0, "Examining the stack.\n\ -The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\ -counting from zero for the innermost (currently executing) frame.\n\n\ -At any time gdb identifies one frame as the \"selected\" frame.\n\ -Variable lookups are done with respect to the selected frame.\n\ -When the program being debugged stops, gdb selects the innermost frame.\n\ -The commands below can be used to select other frames by number or address.", - &cmdlist); - add_cmd ("running", class_run, 0, "Running the program.", &cmdlist); - - add_com ("pwd", class_files, pwd_command, - "Print working directory. This is used for your program as well."); - add_com ("cd", class_files, cd_command, - "Set working directory to DIR for debugger and program being debugged.\n\ -The change does not take effect for the program being debugged\n\ -until the next time it is started."); - - add_com ("set-prompt", class_support, set_prompt_command, - "Change gdb's prompt from the default of \"(gdb)\""); - add_com ("echo", class_support, echo_command, - "Print a constant string. Give string as argument.\n\ -C escape sequences may be used in the argument.\n\ -No newline is added at the end of the argument;\n\ -use \"\\n\" if you want a newline to be printed.\n\ -Since leading and trailing whitespace are ignored in command arguments,\n\ -if you want to print some you must use \"\\\" before leading whitespace\n\ -to be printed or after trailing whitespace."); - add_com ("document", class_support, document_command, - "Document a user-defined command.\n\ -Give command name as argument. Give documentation on following lines.\n\ -End with a line of just \"end\"."); - add_com ("define", class_support, define_command, - "Define a new command name. Command name is argument.\n\ -Definition appears on following lines, one command per line.\n\ -End with a line of just \"end\".\n\ -Use the \"document\" command to give documentation for the new command.\n\ -Commands defined in this way do not take arguments."); - - add_com ("source", class_support, source_command, - "Read commands from a file named FILE.\n\ -Note that the file \".gdbinit\" is read automatically in this way\n\ -when gdb is started."); - add_com ("quit", class_support, quit_command, "Exit gdb."); - add_com ("help", class_support, help_command, "Print list of commands."); - add_com_alias ("q", "quit", class_support, 1); - add_com_alias ("h", "help", class_support, 1); - - add_com ("dump-me", class_obscure, dump_me_command, - "Get fatal error; make debugger dump its core."); - - add_prefix_cmd ("info", class_info, info_command, - "Generic command for printing status.", - &infolist, "info ", 0, &cmdlist); - add_com_alias ("i", "info", class_info, 1); - - add_info ("copying", copying_info, "Conditions for redistributing copies of GDB."); - add_info ("warranty", warranty_info, "Various kinds of warranty you do not have."); - add_info ("version", version_info, "Report what version of GDB this is."); -} -@ - - -1.1 -log -@Initial revision -@ -text -@d21 1 -@ |