1 /* Top level stuff for GDB, the GNU debugger. 2 3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 5 2008, 2009, 2010, 2011 Free Software Foundation, Inc. 6 7 This file is part of GDB. 8 9 This program is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 3 of the License, or 12 (at your option) any later version. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 21 22 #include "defs.h" 23 #include "gdbcmd.h" 24 #include "call-cmds.h" 25 #include "cli/cli-cmds.h" 26 #include "cli/cli-script.h" 27 #include "cli/cli-setshow.h" 28 #include "cli/cli-decode.h" 29 #include "symtab.h" 30 #include "inferior.h" 31 #include "exceptions.h" 32 #include <signal.h> 33 #include "target.h" 34 #include "breakpoint.h" 35 #include "gdbtypes.h" 36 #include "expression.h" 37 #include "value.h" 38 #include "language.h" 39 #include "terminal.h" /* For job_control. */ 40 #include "annotate.h" 41 #include "completer.h" 42 #include "top.h" 43 #include "version.h" 44 #include "serial.h" 45 #include "doublest.h" 46 #include "gdb_assert.h" 47 #include "main.h" 48 #include "event-loop.h" 49 #include "gdbthread.h" 50 #include "python/python.h" 51 52 /* readline include files. */ 53 #include "readline/readline.h" 54 #include "readline/history.h" 55 56 /* readline defines this. */ 57 #undef savestring 58 59 #include <sys/types.h> 60 61 #include "event-top.h" 62 #include "gdb_string.h" 63 #include "gdb_stat.h" 64 #include <ctype.h> 65 #include "ui-out.h" 66 #include "cli-out.h" 67 68 /* Default command line prompt. This is overriden in some configs. */ 69 70 #ifndef DEFAULT_PROMPT 71 #define DEFAULT_PROMPT "(gdb) " 72 #endif 73 74 /* Initialization file name for gdb. This is overridden in some configs. */ 75 76 #ifndef PATH_MAX 77 # ifdef FILENAME_MAX 78 # define PATH_MAX FILENAME_MAX 79 # else 80 # define PATH_MAX 512 81 # endif 82 #endif 83 84 #ifndef GDBINIT_FILENAME 85 #define GDBINIT_FILENAME ".gdbinit" 86 #endif 87 char gdbinit[PATH_MAX + 1] = GDBINIT_FILENAME; 88 89 int inhibit_gdbinit = 0; 90 91 /* If nonzero, and GDB has been configured to be able to use windows, 92 attempt to open them upon startup. */ 93 94 int use_windows = 0; 95 96 extern char lang_frame_mismatch_warn[]; /* language.c */ 97 98 /* Flag for whether we want all the "from_tty" gubbish printed. */ 99 100 int caution = 1; /* Default is yes, sigh. */ 101 static void 102 show_caution (struct ui_file *file, int from_tty, 103 struct cmd_list_element *c, const char *value) 104 { 105 fprintf_filtered (file, _("Whether to confirm potentially " 106 "dangerous operations is %s.\n"), 107 value); 108 } 109 110 /* stdio stream that command input is being read from. Set to stdin 111 normally. Set by source_command to the file we are sourcing. Set 112 to NULL if we are executing a user-defined command or interacting 113 via a GUI. */ 114 115 FILE *instream; 116 117 /* Flag to indicate whether a user defined command is currently running. */ 118 119 int in_user_command; 120 121 /* Current working directory. */ 122 123 char *current_directory; 124 125 /* The directory name is actually stored here (usually). */ 126 char gdb_dirbuf[1024]; 127 128 /* Function to call before reading a command, if nonzero. 129 The function receives two args: an input stream, 130 and a prompt string. */ 131 132 void (*window_hook) (FILE *, char *); 133 134 int epoch_interface; 135 int xgdb_verbose; 136 137 /* Buffer used for reading command lines, and the size 138 allocated for it so far. */ 139 140 char *line; 141 int linesize = 100; 142 143 /* Nonzero if the current command is modified by "server ". This 144 affects things like recording into the command history, commands 145 repeating on RETURN, etc. This is so a user interface (emacs, GUI, 146 whatever) can issue its own commands and also send along commands 147 from the user, and have the user not notice that the user interface 148 is issuing commands too. */ 149 int server_command; 150 151 /* Baud rate specified for talking to serial target systems. Default 152 is left as -1, so targets can choose their own defaults. */ 153 /* FIXME: This means that "show remotebaud" and gr_files_info can 154 print -1 or (unsigned int)-1. This is a Bad User Interface. */ 155 156 int baud_rate = -1; 157 158 /* Timeout limit for response from target. */ 159 160 /* The default value has been changed many times over the years. It 161 was originally 5 seconds. But that was thought to be a long time 162 to sit and wait, so it was changed to 2 seconds. That was thought 163 to be plenty unless the connection was going through some terminal 164 server or multiplexer or other form of hairy serial connection. 165 166 In mid-1996, remote_timeout was moved from remote.c to top.c and 167 it began being used in other remote-* targets. It appears that the 168 default was changed to 20 seconds at that time, perhaps because the 169 Renesas E7000 ICE didn't always respond in a timely manner. 170 171 But if 5 seconds is a long time to sit and wait for retransmissions, 172 20 seconds is far worse. This demonstrates the difficulty of using 173 a single variable for all protocol timeouts. 174 175 As remote.c is used much more than remote-e7000.c, it was changed 176 back to 2 seconds in 1999. */ 177 178 int remote_timeout = 2; 179 180 /* Non-zero tells remote* modules to output debugging info. */ 181 182 int remote_debug = 0; 183 184 /* Sbrk location on entry to main. Used for statistics only. */ 185 #ifdef HAVE_SBRK 186 char *lim_at_start; 187 #endif 188 189 /* Hooks for alternate command interfaces. */ 190 191 /* Called after most modules have been initialized, but before taking 192 users command file. 193 194 If the UI fails to initialize and it wants GDB to continue using 195 the default UI, then it should clear this hook before returning. */ 196 197 void (*deprecated_init_ui_hook) (char *argv0); 198 199 /* This hook is called from within gdb's many mini-event loops which 200 could steal control from a real user interface's event loop. It 201 returns non-zero if the user is requesting a detach, zero 202 otherwise. */ 203 204 int (*deprecated_ui_loop_hook) (int); 205 206 /* Called instead of command_loop at top level. Can be invoked via 207 throw_exception(). */ 208 209 void (*deprecated_command_loop_hook) (void); 210 211 212 /* Called from print_frame_info to list the line we stopped in. */ 213 214 void (*deprecated_print_frame_info_listing_hook) (struct symtab * s, 215 int line, 216 int stopline, 217 int noerror); 218 /* Replaces most of query. */ 219 220 int (*deprecated_query_hook) (const char *, va_list); 221 222 /* Replaces most of warning. */ 223 224 void (*deprecated_warning_hook) (const char *, va_list); 225 226 /* These three functions support getting lines of text from the user. 227 They are used in sequence. First deprecated_readline_begin_hook is 228 called with a text string that might be (for example) a message for 229 the user to type in a sequence of commands to be executed at a 230 breakpoint. If this function calls back to a GUI, it might take 231 this opportunity to pop up a text interaction window with this 232 message. Next, deprecated_readline_hook is called with a prompt 233 that is emitted prior to collecting the user input. It can be 234 called multiple times. Finally, deprecated_readline_end_hook is 235 called to notify the GUI that we are done with the interaction 236 window and it can close it. */ 237 238 void (*deprecated_readline_begin_hook) (char *, ...); 239 char *(*deprecated_readline_hook) (char *); 240 void (*deprecated_readline_end_hook) (void); 241 242 /* Called as appropriate to notify the interface that we have attached 243 to or detached from an already running process. */ 244 245 void (*deprecated_attach_hook) (void); 246 void (*deprecated_detach_hook) (void); 247 248 /* Called during long calculations to allow GUI to repair window 249 damage, and to check for stop buttons, etc... */ 250 251 void (*deprecated_interactive_hook) (void); 252 253 /* Tell the GUI someone changed the register REGNO. -1 means 254 that the caller does not know which register changed or 255 that several registers have changed (see value_assign). */ 256 void (*deprecated_register_changed_hook) (int regno); 257 258 /* Called when going to wait for the target. Usually allows the GUI 259 to run while waiting for target events. */ 260 261 ptid_t (*deprecated_target_wait_hook) (ptid_t ptid, 262 struct target_waitstatus *status, 263 int options); 264 265 /* Used by UI as a wrapper around command execution. May do various 266 things like enabling/disabling buttons, etc... */ 267 268 void (*deprecated_call_command_hook) (struct cmd_list_element * c, 269 char *cmd, int from_tty); 270 271 /* Called after a `set' command has finished. Is only run if the 272 `set' command succeeded. */ 273 274 void (*deprecated_set_hook) (struct cmd_list_element * c); 275 276 /* Called when the current thread changes. Argument is thread id. */ 277 278 void (*deprecated_context_hook) (int id); 279 280 /* Handler for SIGHUP. */ 281 282 #ifdef SIGHUP 283 /* NOTE 1999-04-29: This function will be static again, once we modify 284 gdb to use the event loop as the default command loop and we merge 285 event-top.c into this file, top.c. */ 286 /* static */ int 287 quit_cover (void *s) 288 { 289 caution = 0; /* Throw caution to the wind -- we're exiting. 290 This prevents asking the user dumb 291 questions. */ 292 quit_command ((char *) 0, 0); 293 return 0; 294 } 295 #endif /* defined SIGHUP */ 296 297 /* Line number we are currently in in a file which is being sourced. */ 298 /* NOTE 1999-04-29: This variable will be static again, once we modify 299 gdb to use the event loop as the default command loop and we merge 300 event-top.c into this file, top.c. */ 301 /* static */ int source_line_number; 302 303 /* Name of the file we are sourcing. */ 304 /* NOTE 1999-04-29: This variable will be static again, once we modify 305 gdb to use the event loop as the default command loop and we merge 306 event-top.c into this file, top.c. */ 307 /* static */ const char *source_file_name; 308 309 /* Clean up on error during a "source" command (or execution of a 310 user-defined command). */ 311 312 void 313 do_restore_instream_cleanup (void *stream) 314 { 315 /* Restore the previous input stream. */ 316 instream = stream; 317 } 318 319 /* Read commands from STREAM. */ 320 void 321 read_command_file (FILE *stream) 322 { 323 struct cleanup *cleanups; 324 325 cleanups = make_cleanup (do_restore_instream_cleanup, instream); 326 instream = stream; 327 command_loop (); 328 do_cleanups (cleanups); 329 } 330 331 void (*pre_init_ui_hook) (void); 332 333 #ifdef __MSDOS__ 334 void 335 do_chdir_cleanup (void *old_dir) 336 { 337 chdir (old_dir); 338 xfree (old_dir); 339 } 340 #endif 341 342 void 343 prepare_execute_command (void) 344 { 345 free_all_values (); 346 347 /* With multiple threads running while the one we're examining is 348 stopped, the dcache can get stale without us being able to detect 349 it. For the duration of the command, though, use the dcache to 350 help things like backtrace. */ 351 if (non_stop) 352 target_dcache_invalidate (); 353 } 354 355 /* Execute the line P as a command, in the current user context. 356 Pass FROM_TTY as second argument to the defining function. */ 357 358 void 359 execute_command (char *p, int from_tty) 360 { 361 struct cmd_list_element *c; 362 enum language flang; 363 static int warned = 0; 364 char *line; 365 366 prepare_execute_command (); 367 368 /* Force cleanup of any alloca areas if using C alloca instead of 369 a builtin alloca. */ 370 alloca (0); 371 372 /* This can happen when command_line_input hits end of file. */ 373 if (p == NULL) 374 return; 375 376 target_log_command (p); 377 378 while (*p == ' ' || *p == '\t') 379 p++; 380 if (*p) 381 { 382 char *arg; 383 line = p; 384 385 /* If trace-commands is set then this will print this command. */ 386 print_command_trace (p); 387 388 c = lookup_cmd (&p, cmdlist, "", 0, 1); 389 390 /* Pass null arg rather than an empty one. */ 391 arg = *p ? p : 0; 392 393 /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy 394 while the is_complete_command(cfunc) test is just plain 395 bogus. They should both be replaced by a test of the form 396 c->strip_trailing_white_space_p. */ 397 /* NOTE: cagney/2002-02-02: The function.cfunc in the below 398 can't be replaced with func. This is because it is the 399 cfunc, and not the func, that has the value that the 400 is_complete_command hack is testing for. */ 401 /* Clear off trailing whitespace, except for set and complete 402 command. */ 403 if (arg 404 && c->type != set_cmd 405 && !is_complete_command (c)) 406 { 407 p = arg + strlen (arg) - 1; 408 while (p >= arg && (*p == ' ' || *p == '\t')) 409 p--; 410 *(p + 1) = '\0'; 411 } 412 413 /* If this command has been pre-hooked, run the hook first. */ 414 execute_cmd_pre_hook (c); 415 416 if (c->flags & DEPRECATED_WARN_USER) 417 deprecated_cmd_warning (&line); 418 419 if (c->class == class_user) 420 execute_user_command (c, arg); 421 else if (c->type == set_cmd || c->type == show_cmd) 422 do_setshow_command (arg, from_tty & caution, c); 423 else if (!cmd_func_p (c)) 424 error (_("That is not a command, just a help topic.")); 425 else if (deprecated_call_command_hook) 426 deprecated_call_command_hook (c, arg, from_tty & caution); 427 else 428 cmd_func (c, arg, from_tty & caution); 429 430 /* If this command has been post-hooked, run the hook last. */ 431 execute_cmd_post_hook (c); 432 433 } 434 435 /* Tell the user if the language has changed (except first time). 436 First make sure that a new frame has been selected, in case this 437 command or the hooks changed the program state. */ 438 deprecated_safe_get_selected_frame (); 439 if (current_language != expected_language) 440 { 441 if (language_mode == language_mode_auto && info_verbose) 442 { 443 language_info (1); /* Print what changed. */ 444 } 445 warned = 0; 446 } 447 448 /* Warn the user if the working language does not match the 449 language of the current frame. Only warn the user if we are 450 actually running the program, i.e. there is a stack. */ 451 /* FIXME: This should be cacheing the frame and only running when 452 the frame changes. */ 453 454 if (has_stack_frames ()) 455 { 456 flang = get_frame_language (); 457 if (!warned 458 && flang != language_unknown 459 && flang != current_language->la_language) 460 { 461 printf_filtered ("%s\n", lang_frame_mismatch_warn); 462 warned = 1; 463 } 464 } 465 } 466 467 /* Run execute_command for P and FROM_TTY. Capture its output into the 468 returned string, do not display it to the screen. BATCH_FLAG will be 469 temporarily set to true. */ 470 471 char * 472 execute_command_to_string (char *p, int from_tty) 473 { 474 struct ui_file *str_file; 475 struct cleanup *cleanup; 476 char *retval; 477 478 /* GDB_STDOUT should be better already restored during these 479 restoration callbacks. */ 480 cleanup = set_batch_flag_and_make_cleanup_restore_page_info (); 481 482 str_file = mem_fileopen (); 483 484 make_cleanup_ui_file_delete (str_file); 485 make_cleanup_restore_ui_file (&gdb_stdout); 486 make_cleanup_restore_ui_file (&gdb_stderr); 487 make_cleanup_restore_ui_file (&gdb_stdlog); 488 make_cleanup_restore_ui_file (&gdb_stdtarg); 489 make_cleanup_restore_ui_file (&gdb_stdtargerr); 490 491 if (ui_out_redirect (uiout, str_file) < 0) 492 warning (_("Current output protocol does not support redirection")); 493 else 494 make_cleanup_ui_out_redirect_pop (uiout); 495 496 gdb_stdout = str_file; 497 gdb_stderr = str_file; 498 gdb_stdlog = str_file; 499 gdb_stdtarg = str_file; 500 gdb_stdtargerr = str_file; 501 502 execute_command (p, from_tty); 503 504 retval = ui_file_xstrdup (str_file, NULL); 505 506 do_cleanups (cleanup); 507 508 return retval; 509 } 510 511 /* Read commands from `instream' and execute them 512 until end of file or error reading instream. */ 513 514 void 515 command_loop (void) 516 { 517 struct cleanup *old_chain; 518 char *command; 519 int stdin_is_tty = ISATTY (stdin); 520 521 while (instream && !feof (instream)) 522 { 523 if (window_hook && instream == stdin) 524 (*window_hook) (instream, get_prompt ()); 525 526 quit_flag = 0; 527 if (instream == stdin && stdin_is_tty) 528 reinitialize_more_filter (); 529 old_chain = make_cleanup (null_cleanup, 0); 530 531 /* Get a command-line. This calls the readline package. */ 532 command = command_line_input (instream == stdin ? 533 get_prompt () : (char *) NULL, 534 instream == stdin, "prompt"); 535 if (command == 0) 536 return; 537 538 make_command_stats_cleanup (1); 539 540 execute_command (command, instream == stdin); 541 542 /* Do any commands attached to breakpoint we are stopped at. */ 543 bpstat_do_actions (); 544 545 do_cleanups (old_chain); 546 } 547 } 548 549 /* When nonzero, cause dont_repeat to do nothing. This should only be 550 set via prevent_dont_repeat. */ 551 552 static int suppress_dont_repeat = 0; 553 554 /* Commands call this if they do not want to be repeated by null lines. */ 555 556 void 557 dont_repeat (void) 558 { 559 if (suppress_dont_repeat || server_command) 560 return; 561 562 /* If we aren't reading from standard input, we are saving the last 563 thing read from stdin in line and don't want to delete it. Null 564 lines won't repeat here in any case. */ 565 if (instream == stdin) 566 *line = 0; 567 } 568 569 /* Prevent dont_repeat from working, and return a cleanup that 570 restores the previous state. */ 571 572 struct cleanup * 573 prevent_dont_repeat (void) 574 { 575 struct cleanup *result = make_cleanup_restore_integer (&suppress_dont_repeat); 576 577 suppress_dont_repeat = 1; 578 return result; 579 } 580 581 582 /* Read a line from the stream "instream" without command line editing. 583 584 It prints PROMPT_ARG once at the start. 585 Action is compatible with "readline", e.g. space for the result is 586 malloc'd and should be freed by the caller. 587 588 A NULL return means end of file. */ 589 char * 590 gdb_readline (char *prompt_arg) 591 { 592 int c; 593 char *result; 594 int input_index = 0; 595 int result_size = 80; 596 597 if (prompt_arg) 598 { 599 /* Don't use a _filtered function here. It causes the assumed 600 character position to be off, since the newline we read from 601 the user is not accounted for. */ 602 fputs_unfiltered (prompt_arg, gdb_stdout); 603 gdb_flush (gdb_stdout); 604 } 605 606 result = (char *) xmalloc (result_size); 607 608 while (1) 609 { 610 /* Read from stdin if we are executing a user defined command. 611 This is the right thing for prompt_for_continue, at least. */ 612 c = fgetc (instream ? instream : stdin); 613 614 if (c == EOF) 615 { 616 if (input_index > 0) 617 /* The last line does not end with a newline. Return it, and 618 if we are called again fgetc will still return EOF and 619 we'll return NULL then. */ 620 break; 621 xfree (result); 622 return NULL; 623 } 624 625 if (c == '\n') 626 { 627 if (input_index > 0 && result[input_index - 1] == '\r') 628 input_index--; 629 break; 630 } 631 632 result[input_index++] = c; 633 while (input_index >= result_size) 634 { 635 result_size *= 2; 636 result = (char *) xrealloc (result, result_size); 637 } 638 } 639 640 result[input_index++] = '\0'; 641 return result; 642 } 643 644 /* Variables which control command line editing and history 645 substitution. These variables are given default values at the end 646 of this file. */ 647 static int command_editing_p; 648 649 /* NOTE 1999-04-29: This variable will be static again, once we modify 650 gdb to use the event loop as the default command loop and we merge 651 event-top.c into this file, top.c. */ 652 653 /* static */ int history_expansion_p; 654 655 static int write_history_p; 656 static void 657 show_write_history_p (struct ui_file *file, int from_tty, 658 struct cmd_list_element *c, const char *value) 659 { 660 fprintf_filtered (file, _("Saving of the history record on exit is %s.\n"), 661 value); 662 } 663 664 static int history_size; 665 static void 666 show_history_size (struct ui_file *file, int from_tty, 667 struct cmd_list_element *c, const char *value) 668 { 669 fprintf_filtered (file, _("The size of the command history is %s.\n"), 670 value); 671 } 672 673 static char *history_filename; 674 static void 675 show_history_filename (struct ui_file *file, int from_tty, 676 struct cmd_list_element *c, const char *value) 677 { 678 fprintf_filtered (file, _("The filename in which to record " 679 "the command history is \"%s\".\n"), 680 value); 681 } 682 683 /* This is like readline(), but it has some gdb-specific behavior. 684 gdb may want readline in both the synchronous and async modes during 685 a single gdb invocation. At the ordinary top-level prompt we might 686 be using the async readline. That means we can't use 687 rl_pre_input_hook, since it doesn't work properly in async mode. 688 However, for a secondary prompt (" >", such as occurs during a 689 `define'), gdb wants a synchronous response. 690 691 We used to call readline() directly, running it in synchronous 692 mode. But mixing modes this way is not supported, and as of 693 readline 5.x it no longer works; the arrow keys come unbound during 694 the synchronous call. So we make a nested call into the event 695 loop. That's what gdb_readline_wrapper is for. */ 696 697 /* A flag set as soon as gdb_readline_wrapper_line is called; we can't 698 rely on gdb_readline_wrapper_result, which might still be NULL if 699 the user types Control-D for EOF. */ 700 static int gdb_readline_wrapper_done; 701 702 /* The result of the current call to gdb_readline_wrapper, once a newline 703 is seen. */ 704 static char *gdb_readline_wrapper_result; 705 706 /* Any intercepted hook. Operate-and-get-next sets this, expecting it 707 to be called after the newline is processed (which will redisplay 708 the prompt). But in gdb_readline_wrapper we will not get a new 709 prompt until the next call, or until we return to the event loop. 710 So we disable this hook around the newline and restore it before we 711 return. */ 712 static void (*saved_after_char_processing_hook) (void); 713 714 /* This function is called when readline has seen a complete line of 715 text. */ 716 717 static void 718 gdb_readline_wrapper_line (char *line) 719 { 720 gdb_assert (!gdb_readline_wrapper_done); 721 gdb_readline_wrapper_result = line; 722 gdb_readline_wrapper_done = 1; 723 724 /* Prevent operate-and-get-next from acting too early. */ 725 saved_after_char_processing_hook = after_char_processing_hook; 726 after_char_processing_hook = NULL; 727 728 /* Prevent parts of the prompt from being redisplayed if annotations 729 are enabled, and readline's state getting out of sync. */ 730 if (async_command_editing_p) 731 rl_callback_handler_remove (); 732 } 733 734 struct gdb_readline_wrapper_cleanup 735 { 736 void (*handler_orig) (char *); 737 int already_prompted_orig; 738 }; 739 740 static void 741 gdb_readline_wrapper_cleanup (void *arg) 742 { 743 struct gdb_readline_wrapper_cleanup *cleanup = arg; 744 745 rl_already_prompted = cleanup->already_prompted_orig; 746 747 gdb_assert (input_handler == gdb_readline_wrapper_line); 748 input_handler = cleanup->handler_orig; 749 gdb_readline_wrapper_result = NULL; 750 gdb_readline_wrapper_done = 0; 751 752 after_char_processing_hook = saved_after_char_processing_hook; 753 saved_after_char_processing_hook = NULL; 754 755 xfree (cleanup); 756 } 757 758 char * 759 gdb_readline_wrapper (char *prompt) 760 { 761 struct cleanup *back_to; 762 struct gdb_readline_wrapper_cleanup *cleanup; 763 char *retval; 764 765 cleanup = xmalloc (sizeof (*cleanup)); 766 cleanup->handler_orig = input_handler; 767 input_handler = gdb_readline_wrapper_line; 768 769 cleanup->already_prompted_orig = rl_already_prompted; 770 771 back_to = make_cleanup (gdb_readline_wrapper_cleanup, cleanup); 772 773 /* Display our prompt and prevent double prompt display. */ 774 display_gdb_prompt (prompt); 775 rl_already_prompted = 1; 776 777 if (after_char_processing_hook) 778 (*after_char_processing_hook) (); 779 gdb_assert (after_char_processing_hook == NULL); 780 781 /* gdb_do_one_event argument is unused. */ 782 while (gdb_do_one_event (NULL) >= 0) 783 if (gdb_readline_wrapper_done) 784 break; 785 786 retval = gdb_readline_wrapper_result; 787 do_cleanups (back_to); 788 return retval; 789 } 790 791 792 /* The current saved history number from operate-and-get-next. 793 This is -1 if not valid. */ 794 static int operate_saved_history = -1; 795 796 /* This is put on the appropriate hook and helps operate-and-get-next 797 do its work. */ 798 static void 799 gdb_rl_operate_and_get_next_completion (void) 800 { 801 int delta = where_history () - operate_saved_history; 802 803 /* The `key' argument to rl_get_previous_history is ignored. */ 804 rl_get_previous_history (delta, 0); 805 operate_saved_history = -1; 806 807 /* readline doesn't automatically update the display for us. */ 808 rl_redisplay (); 809 810 after_char_processing_hook = NULL; 811 rl_pre_input_hook = NULL; 812 } 813 814 /* This is a gdb-local readline command handler. It accepts the 815 current command line (like RET does) and, if this command was taken 816 from the history, arranges for the next command in the history to 817 appear on the command line when the prompt returns. 818 We ignore the arguments. */ 819 static int 820 gdb_rl_operate_and_get_next (int count, int key) 821 { 822 int where; 823 824 /* Use the async hook. */ 825 after_char_processing_hook = gdb_rl_operate_and_get_next_completion; 826 827 /* Find the current line, and find the next line to use. */ 828 where = where_history(); 829 830 /* FIXME: kettenis/20020817: max_input_history is renamed into 831 history_max_entries in readline-4.2. When we do a new readline 832 import, we should probably change it here too, even though 833 readline maintains backwards compatibility for now by still 834 defining max_input_history. */ 835 if ((history_is_stifled () && (history_length >= max_input_history)) || 836 (where >= history_length - 1)) 837 operate_saved_history = where; 838 else 839 operate_saved_history = where + 1; 840 841 return rl_newline (1, key); 842 } 843 844 /* Read one line from the command input stream `instream' 845 into the local static buffer `linebuffer' (whose current length 846 is `linelength'). 847 The buffer is made bigger as necessary. 848 Returns the address of the start of the line. 849 850 NULL is returned for end of file. 851 852 *If* the instream == stdin & stdin is a terminal, the line read 853 is copied into the file line saver (global var char *line, 854 length linesize) so that it can be duplicated. 855 856 This routine either uses fancy command line editing or 857 simple input as the user has requested. */ 858 859 char * 860 command_line_input (char *prompt_arg, int repeat, char *annotation_suffix) 861 { 862 static char *linebuffer = 0; 863 static unsigned linelength = 0; 864 char *p; 865 char *p1; 866 char *rl; 867 char *local_prompt = prompt_arg; 868 char *nline; 869 char got_eof = 0; 870 871 /* The annotation suffix must be non-NULL. */ 872 if (annotation_suffix == NULL) 873 annotation_suffix = ""; 874 875 if (annotation_level > 1 && instream == stdin) 876 { 877 local_prompt = alloca ((prompt_arg == NULL ? 0 : strlen (prompt_arg)) 878 + strlen (annotation_suffix) + 40); 879 if (prompt_arg == NULL) 880 local_prompt[0] = '\0'; 881 else 882 strcpy (local_prompt, prompt_arg); 883 strcat (local_prompt, "\n\032\032"); 884 strcat (local_prompt, annotation_suffix); 885 strcat (local_prompt, "\n"); 886 } 887 888 if (linebuffer == 0) 889 { 890 linelength = 80; 891 linebuffer = (char *) xmalloc (linelength); 892 } 893 894 p = linebuffer; 895 896 /* Control-C quits instantly if typed while in this loop 897 since it should not wait until the user types a newline. */ 898 immediate_quit++; 899 #ifdef STOP_SIGNAL 900 if (job_control) 901 signal (STOP_SIGNAL, handle_stop_sig); 902 #endif 903 904 while (1) 905 { 906 /* Make sure that all output has been output. Some machines may 907 let you get away with leaving out some of the gdb_flush, but 908 not all. */ 909 wrap_here (""); 910 gdb_flush (gdb_stdout); 911 gdb_flush (gdb_stderr); 912 913 if (source_file_name != NULL) 914 ++source_line_number; 915 916 if (annotation_level > 1 && instream == stdin) 917 { 918 puts_unfiltered ("\n\032\032pre-"); 919 puts_unfiltered (annotation_suffix); 920 puts_unfiltered ("\n"); 921 } 922 923 /* Don't use fancy stuff if not talking to stdin. */ 924 if (deprecated_readline_hook && input_from_terminal_p ()) 925 { 926 rl = (*deprecated_readline_hook) (local_prompt); 927 } 928 else if (command_editing_p && input_from_terminal_p ()) 929 { 930 rl = gdb_readline_wrapper (local_prompt); 931 } 932 else 933 { 934 rl = gdb_readline (local_prompt); 935 } 936 937 if (annotation_level > 1 && instream == stdin) 938 { 939 puts_unfiltered ("\n\032\032post-"); 940 puts_unfiltered (annotation_suffix); 941 puts_unfiltered ("\n"); 942 } 943 944 if (!rl || rl == (char *) EOF) 945 { 946 got_eof = 1; 947 break; 948 } 949 if (strlen (rl) + 1 + (p - linebuffer) > linelength) 950 { 951 linelength = strlen (rl) + 1 + (p - linebuffer); 952 nline = (char *) xrealloc (linebuffer, linelength); 953 p += nline - linebuffer; 954 linebuffer = nline; 955 } 956 p1 = rl; 957 /* Copy line. Don't copy null at end. (Leaves line alone 958 if this was just a newline). */ 959 while (*p1) 960 *p++ = *p1++; 961 962 xfree (rl); /* Allocated in readline. */ 963 964 if (p == linebuffer || *(p - 1) != '\\') 965 break; 966 967 p--; /* Put on top of '\'. */ 968 local_prompt = (char *) 0; 969 } 970 971 #ifdef STOP_SIGNAL 972 if (job_control) 973 signal (STOP_SIGNAL, SIG_DFL); 974 #endif 975 immediate_quit--; 976 977 if (got_eof) 978 return NULL; 979 980 #define SERVER_COMMAND_LENGTH 7 981 server_command = 982 (p - linebuffer > SERVER_COMMAND_LENGTH) 983 && strncmp (linebuffer, "server ", SERVER_COMMAND_LENGTH) == 0; 984 if (server_command) 985 { 986 /* Note that we don't set `line'. Between this and the check in 987 dont_repeat, this insures that repeating will still do the 988 right thing. */ 989 *p = '\0'; 990 return linebuffer + SERVER_COMMAND_LENGTH; 991 } 992 993 /* Do history expansion if that is wished. */ 994 if (history_expansion_p && instream == stdin 995 && ISATTY (instream)) 996 { 997 char *history_value; 998 int expanded; 999 1000 *p = '\0'; /* Insert null now. */ 1001 expanded = history_expand (linebuffer, &history_value); 1002 if (expanded) 1003 { 1004 /* Print the changes. */ 1005 printf_unfiltered ("%s\n", history_value); 1006 1007 /* If there was an error, call this function again. */ 1008 if (expanded < 0) 1009 { 1010 xfree (history_value); 1011 return command_line_input (prompt_arg, repeat, 1012 annotation_suffix); 1013 } 1014 if (strlen (history_value) > linelength) 1015 { 1016 linelength = strlen (history_value) + 1; 1017 linebuffer = (char *) xrealloc (linebuffer, linelength); 1018 } 1019 strcpy (linebuffer, history_value); 1020 p = linebuffer + strlen (linebuffer); 1021 } 1022 xfree (history_value); 1023 } 1024 1025 /* If we just got an empty line, and that is supposed to repeat the 1026 previous command, return the value in the global buffer. */ 1027 if (repeat && p == linebuffer) 1028 return line; 1029 for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++); 1030 if (repeat && !*p1) 1031 return line; 1032 1033 *p = 0; 1034 1035 /* Add line to history if appropriate. */ 1036 if (instream == stdin 1037 && ISATTY (stdin) && *linebuffer) 1038 add_history (linebuffer); 1039 1040 /* Note: lines consisting solely of comments are added to the command 1041 history. This is useful when you type a command, and then 1042 realize you don't want to execute it quite yet. You can comment 1043 out the command and then later fetch it from the value history 1044 and remove the '#'. The kill ring is probably better, but some 1045 people are in the habit of commenting things out. */ 1046 if (*p1 == '#') 1047 *p1 = '\0'; /* Found a comment. */ 1048 1049 /* Save into global buffer if appropriate. */ 1050 if (repeat) 1051 { 1052 if (linelength > linesize) 1053 { 1054 line = xrealloc (line, linelength); 1055 linesize = linelength; 1056 } 1057 strcpy (line, linebuffer); 1058 return line; 1059 } 1060 1061 return linebuffer; 1062 } 1063 1064 /* Print the GDB banner. */ 1065 void 1066 print_gdb_version (struct ui_file *stream) 1067 { 1068 /* From GNU coding standards, first line is meant to be easy for a 1069 program to parse, and is just canonical program name and version 1070 number, which starts after last space. */ 1071 1072 fprintf_filtered (stream, "GNU gdb %s%s\n", PKGVERSION, version); 1073 1074 /* Second line is a copyright notice. */ 1075 1076 fprintf_filtered (stream, 1077 "Copyright (C) 2011 Free Software Foundation, Inc.\n"); 1078 1079 /* Following the copyright is a brief statement that the program is 1080 free software, that users are free to copy and change it on 1081 certain conditions, that it is covered by the GNU GPL, and that 1082 there is no warranty. */ 1083 1084 fprintf_filtered (stream, "\ 1085 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\ 1086 \nThis is free software: you are free to change and redistribute it.\n\ 1087 There is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\n\ 1088 and \"show warranty\" for details.\n"); 1089 1090 /* After the required info we print the configuration information. */ 1091 1092 fprintf_filtered (stream, "This GDB was configured as \""); 1093 if (strcmp (host_name, target_name) != 0) 1094 { 1095 fprintf_filtered (stream, "--host=%s --target=%s", 1096 host_name, target_name); 1097 } 1098 else 1099 { 1100 fprintf_filtered (stream, "%s", host_name); 1101 } 1102 fprintf_filtered (stream, "\"."); 1103 1104 if (REPORT_BUGS_TO[0]) 1105 { 1106 fprintf_filtered (stream, 1107 _("\nFor bug reporting instructions, please see:\n")); 1108 fprintf_filtered (stream, "%s.", REPORT_BUGS_TO); 1109 } 1110 } 1111 1112 /* get_prompt: access method for the GDB prompt string. */ 1113 1114 char * 1115 get_prompt (void) 1116 { 1117 return PROMPT (0); 1118 } 1119 1120 void 1121 set_prompt (char *s) 1122 { 1123 /* ??rehrauer: I don't know why this fails, since it looks as though 1124 assignments to prompt are wrapped in calls to xstrdup... 1125 if (prompt != NULL) 1126 xfree (prompt); 1127 */ 1128 PROMPT (0) = xstrdup (s); 1129 } 1130 1131 1132 struct qt_args 1133 { 1134 char *args; 1135 int from_tty; 1136 }; 1137 1138 /* Callback for iterate_over_inferiors. Kills or detaches the given 1139 inferior, depending on how we originally gained control of it. */ 1140 1141 static int 1142 kill_or_detach (struct inferior *inf, void *args) 1143 { 1144 struct qt_args *qt = args; 1145 struct thread_info *thread; 1146 1147 if (inf->pid == FAKE_PROCESS_ID) 1148 return 0; 1149 1150 thread = any_thread_of_process (inf->pid); 1151 if (thread != NULL) 1152 { 1153 switch_to_thread (thread->ptid); 1154 1155 /* Leave core files alone. */ 1156 if (target_has_execution) 1157 { 1158 if (inf->attach_flag) 1159 target_detach (qt->args, qt->from_tty); 1160 else 1161 target_kill (); 1162 } 1163 } 1164 1165 return 0; 1166 } 1167 1168 /* Callback for iterate_over_inferiors. Prints info about what GDB 1169 will do to each inferior on a "quit". ARG points to a struct 1170 ui_out where output is to be collected. */ 1171 1172 static int 1173 print_inferior_quit_action (struct inferior *inf, void *arg) 1174 { 1175 struct ui_file *stb = arg; 1176 1177 if (inf->pid == FAKE_PROCESS_ID) 1178 return 0; 1179 1180 if (inf->attach_flag) 1181 fprintf_filtered (stb, 1182 _("\tInferior %d [%s] will be detached.\n"), inf->num, 1183 target_pid_to_str (pid_to_ptid (inf->pid))); 1184 else 1185 fprintf_filtered (stb, 1186 _("\tInferior %d [%s] will be killed.\n"), inf->num, 1187 target_pid_to_str (pid_to_ptid (inf->pid))); 1188 1189 return 0; 1190 } 1191 1192 /* If necessary, make the user confirm that we should quit. Return 1193 non-zero if we should quit, zero if we shouldn't. */ 1194 1195 int 1196 quit_confirm (void) 1197 { 1198 struct ui_file *stb; 1199 struct cleanup *old_chain; 1200 char *str; 1201 int qr; 1202 1203 /* Don't even ask if we're only debugging a core file inferior. */ 1204 if (!have_live_inferiors ()) 1205 return 1; 1206 1207 /* Build the query string as a single string. */ 1208 stb = mem_fileopen (); 1209 old_chain = make_cleanup_ui_file_delete (stb); 1210 1211 /* This is something of a hack. But there's no reliable way to see 1212 if a GUI is running. The `use_windows' variable doesn't cut 1213 it. */ 1214 if (deprecated_init_ui_hook) 1215 fprintf_filtered (stb, _("A debugging session is active.\n" 1216 "Do you still want to close the debugger?")); 1217 else 1218 { 1219 fprintf_filtered (stb, _("A debugging session is active.\n\n")); 1220 iterate_over_inferiors (print_inferior_quit_action, stb); 1221 fprintf_filtered (stb, _("\nQuit anyway? ")); 1222 } 1223 1224 str = ui_file_xstrdup (stb, NULL); 1225 make_cleanup (xfree, str); 1226 1227 qr = query ("%s", str); 1228 do_cleanups (old_chain); 1229 return qr; 1230 } 1231 1232 /* Helper routine for quit_force that requires error handling. */ 1233 1234 static int 1235 quit_target (void *arg) 1236 { 1237 struct qt_args *qt = (struct qt_args *)arg; 1238 1239 /* Kill or detach all inferiors. */ 1240 iterate_over_inferiors (kill_or_detach, qt); 1241 1242 /* Give all pushed targets a chance to do minimal cleanup, and pop 1243 them all out. */ 1244 pop_all_targets (1); 1245 1246 /* Save the history information if it is appropriate to do so. */ 1247 if (write_history_p && history_filename) 1248 write_history (history_filename); 1249 1250 do_final_cleanups (ALL_CLEANUPS); /* Do any final cleanups before 1251 exiting. */ 1252 return 0; 1253 } 1254 1255 /* Quit without asking for confirmation. */ 1256 1257 void 1258 quit_force (char *args, int from_tty) 1259 { 1260 int exit_code = 0; 1261 struct qt_args qt; 1262 1263 /* An optional expression may be used to cause gdb to terminate with the 1264 value of that expression. */ 1265 if (args) 1266 { 1267 struct value *val = parse_and_eval (args); 1268 1269 exit_code = (int) value_as_long (val); 1270 } 1271 else if (return_child_result) 1272 exit_code = return_child_result_value; 1273 1274 qt.args = args; 1275 qt.from_tty = from_tty; 1276 1277 /* We want to handle any quit errors and exit regardless. */ 1278 catch_errors (quit_target, &qt, 1279 "Quitting: ", RETURN_MASK_ALL); 1280 1281 exit (exit_code); 1282 } 1283 1284 /* Returns whether GDB is running on a terminal and input is 1285 currently coming from that terminal. */ 1286 1287 int 1288 input_from_terminal_p (void) 1289 { 1290 if (batch_flag) 1291 return 0; 1292 1293 if (gdb_has_a_terminal () && instream == stdin) 1294 return 1; 1295 1296 /* If INSTREAM is unset, and we are not in a user command, we 1297 must be in Insight. That's like having a terminal, for our 1298 purposes. */ 1299 if (instream == NULL && !in_user_command) 1300 return 1; 1301 1302 return 0; 1303 } 1304 1305 static void 1306 dont_repeat_command (char *ignored, int from_tty) 1307 { 1308 *line = 0; /* Can't call dont_repeat here because we're 1309 not necessarily reading from stdin. */ 1310 } 1311 1312 /* Functions to manipulate command line editing control variables. */ 1313 1314 /* Number of commands to print in each call to show_commands. */ 1315 #define Hist_print 10 1316 void 1317 show_commands (char *args, int from_tty) 1318 { 1319 /* Index for history commands. Relative to history_base. */ 1320 int offset; 1321 1322 /* Number of the history entry which we are planning to display next. 1323 Relative to history_base. */ 1324 static int num = 0; 1325 1326 /* The first command in the history which doesn't exist (i.e. one more 1327 than the number of the last command). Relative to history_base. */ 1328 int hist_len; 1329 1330 /* Print out some of the commands from the command history. */ 1331 /* First determine the length of the history list. */ 1332 hist_len = history_size; 1333 for (offset = 0; offset < history_size; offset++) 1334 { 1335 if (!history_get (history_base + offset)) 1336 { 1337 hist_len = offset; 1338 break; 1339 } 1340 } 1341 1342 if (args) 1343 { 1344 if (args[0] == '+' && args[1] == '\0') 1345 /* "info editing +" should print from the stored position. */ 1346 ; 1347 else 1348 /* "info editing <exp>" should print around command number <exp>. */ 1349 num = (parse_and_eval_long (args) - history_base) - Hist_print / 2; 1350 } 1351 /* "show commands" means print the last Hist_print commands. */ 1352 else 1353 { 1354 num = hist_len - Hist_print; 1355 } 1356 1357 if (num < 0) 1358 num = 0; 1359 1360 /* If there are at least Hist_print commands, we want to display the last 1361 Hist_print rather than, say, the last 6. */ 1362 if (hist_len - num < Hist_print) 1363 { 1364 num = hist_len - Hist_print; 1365 if (num < 0) 1366 num = 0; 1367 } 1368 1369 for (offset = num; offset < num + Hist_print && offset < hist_len; offset++) 1370 { 1371 printf_filtered ("%5d %s\n", history_base + offset, 1372 (history_get (history_base + offset))->line); 1373 } 1374 1375 /* The next command we want to display is the next one that we haven't 1376 displayed yet. */ 1377 num += Hist_print; 1378 1379 /* If the user repeats this command with return, it should do what 1380 "show commands +" does. This is unnecessary if arg is null, 1381 because "show commands +" is not useful after "show commands". */ 1382 if (from_tty && args) 1383 { 1384 args[0] = '+'; 1385 args[1] = '\0'; 1386 } 1387 } 1388 1389 /* Called by do_setshow_command. */ 1390 static void 1391 set_history_size_command (char *args, int from_tty, struct cmd_list_element *c) 1392 { 1393 if (history_size == INT_MAX) 1394 unstifle_history (); 1395 else if (history_size >= 0) 1396 stifle_history (history_size); 1397 else 1398 { 1399 history_size = INT_MAX; 1400 error (_("History size must be non-negative")); 1401 } 1402 } 1403 1404 void 1405 set_history (char *args, int from_tty) 1406 { 1407 printf_unfiltered (_("\"set history\" must be followed " 1408 "by the name of a history subcommand.\n")); 1409 help_list (sethistlist, "set history ", -1, gdb_stdout); 1410 } 1411 1412 void 1413 show_history (char *args, int from_tty) 1414 { 1415 cmd_show_list (showhistlist, from_tty, ""); 1416 } 1417 1418 int info_verbose = 0; /* Default verbose msgs off. */ 1419 1420 /* Called by do_setshow_command. An elaborate joke. */ 1421 void 1422 set_verbose (char *args, int from_tty, struct cmd_list_element *c) 1423 { 1424 char *cmdname = "verbose"; 1425 struct cmd_list_element *showcmd; 1426 1427 showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); 1428 gdb_assert (showcmd != NULL && showcmd != CMD_LIST_AMBIGUOUS); 1429 1430 if (info_verbose) 1431 { 1432 c->doc = "Set verbose printing of informational messages."; 1433 showcmd->doc = "Show verbose printing of informational messages."; 1434 } 1435 else 1436 { 1437 c->doc = "Set verbosity."; 1438 showcmd->doc = "Show verbosity."; 1439 } 1440 } 1441 1442 /* Init the history buffer. Note that we are called after the init file(s) 1443 have been read so that the user can change the history file via his 1444 .gdbinit file (for instance). The GDBHISTFILE environment variable 1445 overrides all of this. */ 1446 1447 void 1448 init_history (void) 1449 { 1450 char *tmpenv; 1451 1452 tmpenv = getenv ("HISTSIZE"); 1453 if (tmpenv) 1454 history_size = atoi (tmpenv); 1455 else if (!history_size) 1456 history_size = 256; 1457 1458 stifle_history (history_size); 1459 1460 tmpenv = getenv ("GDBHISTFILE"); 1461 if (tmpenv) 1462 history_filename = xstrdup (tmpenv); 1463 else if (!history_filename) 1464 { 1465 /* We include the current directory so that if the user changes 1466 directories the file written will be the same as the one 1467 that was read. */ 1468 #ifdef __MSDOS__ 1469 /* No leading dots in file names are allowed on MSDOS. */ 1470 history_filename = concat (current_directory, "/_gdb_history", 1471 (char *)NULL); 1472 #else 1473 history_filename = concat (current_directory, "/.gdb_history", 1474 (char *)NULL); 1475 #endif 1476 } 1477 read_history (history_filename); 1478 } 1479 1480 static void 1481 show_new_async_prompt (struct ui_file *file, int from_tty, 1482 struct cmd_list_element *c, const char *value) 1483 { 1484 fprintf_filtered (file, _("Gdb's prompt is \"%s\".\n"), value); 1485 } 1486 1487 static void 1488 show_async_command_editing_p (struct ui_file *file, int from_tty, 1489 struct cmd_list_element *c, const char *value) 1490 { 1491 fprintf_filtered (file, _("Editing of command lines as " 1492 "they are typed is %s.\n"), 1493 value); 1494 } 1495 1496 static void 1497 show_annotation_level (struct ui_file *file, int from_tty, 1498 struct cmd_list_element *c, const char *value) 1499 { 1500 fprintf_filtered (file, _("Annotation_level is %s.\n"), value); 1501 } 1502 1503 static void 1504 show_exec_done_display_p (struct ui_file *file, int from_tty, 1505 struct cmd_list_element *c, const char *value) 1506 { 1507 fprintf_filtered (file, _("Notification of completion for " 1508 "asynchronous execution commands is %s.\n"), 1509 value); 1510 } 1511 static void 1512 init_main (void) 1513 { 1514 /* initialize the prompt stack to a simple "(gdb) " prompt or to 1515 whatever the DEFAULT_PROMPT is. */ 1516 the_prompts.top = 0; 1517 PREFIX (0) = ""; 1518 PROMPT (0) = xstrdup (DEFAULT_PROMPT); 1519 SUFFIX (0) = ""; 1520 /* Set things up for annotation_level > 1, if the user ever decides 1521 to use it. */ 1522 async_annotation_suffix = "prompt"; 1523 /* Set the variable associated with the setshow prompt command. */ 1524 new_async_prompt = xstrdup (PROMPT (0)); 1525 1526 /* If gdb was started with --annotate=2, this is equivalent to the 1527 user entering the command 'set annotate 2' at the gdb prompt, so 1528 we need to do extra processing. */ 1529 if (annotation_level > 1) 1530 set_async_annotation_level (NULL, 0, NULL); 1531 1532 /* Set the important stuff up for command editing. */ 1533 command_editing_p = 1; 1534 history_expansion_p = 0; 1535 write_history_p = 0; 1536 1537 /* Setup important stuff for command line editing. */ 1538 rl_completion_word_break_hook = gdb_completion_word_break_characters; 1539 rl_completion_entry_function = readline_line_completion_function; 1540 rl_completer_word_break_characters = default_word_break_characters (); 1541 rl_completer_quote_characters = get_gdb_completer_quote_characters (); 1542 rl_readline_name = "gdb"; 1543 rl_terminal_name = getenv ("TERM"); 1544 1545 /* The name for this defun comes from Bash, where it originated. 1546 15 is Control-o, the same binding this function has in Bash. */ 1547 rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next, 15); 1548 1549 add_setshow_string_cmd ("prompt", class_support, 1550 &new_async_prompt, 1551 _("Set gdb's prompt"), 1552 _("Show gdb's prompt"), 1553 NULL, set_async_prompt, 1554 show_new_async_prompt, 1555 &setlist, &showlist); 1556 1557 add_com ("dont-repeat", class_support, dont_repeat_command, _("\ 1558 Don't repeat this command.\nPrimarily \ 1559 used inside of user-defined commands that should not be repeated when\n\ 1560 hitting return.")); 1561 1562 add_setshow_boolean_cmd ("editing", class_support, 1563 &async_command_editing_p, _("\ 1564 Set editing of command lines as they are typed."), _("\ 1565 Show editing of command lines as they are typed."), _("\ 1566 Use \"on\" to enable the editing, and \"off\" to disable it.\n\ 1567 Without an argument, command line editing is enabled. To edit, use\n\ 1568 EMACS-like or VI-like commands like control-P or ESC."), 1569 set_async_editing_command, 1570 show_async_command_editing_p, 1571 &setlist, &showlist); 1572 1573 add_setshow_boolean_cmd ("save", no_class, &write_history_p, _("\ 1574 Set saving of the history record on exit."), _("\ 1575 Show saving of the history record on exit."), _("\ 1576 Use \"on\" to enable the saving, and \"off\" to disable it.\n\ 1577 Without an argument, saving is enabled."), 1578 NULL, 1579 show_write_history_p, 1580 &sethistlist, &showhistlist); 1581 1582 add_setshow_integer_cmd ("size", no_class, &history_size, _("\ 1583 Set the size of the command history,"), _("\ 1584 Show the size of the command history,"), _("\ 1585 ie. the number of previous commands to keep a record of."), 1586 set_history_size_command, 1587 show_history_size, 1588 &sethistlist, &showhistlist); 1589 1590 add_setshow_filename_cmd ("filename", no_class, &history_filename, _("\ 1591 Set the filename in which to record the command history"), _("\ 1592 Show the filename in which to record the command history"), _("\ 1593 (the list of previous commands of which a record is kept)."), 1594 NULL, 1595 show_history_filename, 1596 &sethistlist, &showhistlist); 1597 1598 add_setshow_boolean_cmd ("confirm", class_support, &caution, _("\ 1599 Set whether to confirm potentially dangerous operations."), _("\ 1600 Show whether to confirm potentially dangerous operations."), NULL, 1601 NULL, 1602 show_caution, 1603 &setlist, &showlist); 1604 1605 add_setshow_zinteger_cmd ("annotate", class_obscure, &annotation_level, _("\ 1606 Set annotation_level."), _("\ 1607 Show annotation_level."), _("\ 1608 0 == normal; 1 == fullname (for use when running under emacs)\n\ 1609 2 == output annotated suitably for use by programs that control GDB."), 1610 set_async_annotation_level, 1611 show_annotation_level, 1612 &setlist, &showlist); 1613 1614 add_setshow_boolean_cmd ("exec-done-display", class_support, 1615 &exec_done_display_p, _("\ 1616 Set notification of completion for asynchronous execution commands."), _("\ 1617 Show notification of completion for asynchronous execution commands."), _("\ 1618 Use \"on\" to enable the notification, and \"off\" to disable it."), 1619 NULL, 1620 show_exec_done_display_p, 1621 &setlist, &showlist); 1622 1623 add_setshow_filename_cmd ("data-directory", class_maintenance, 1624 &gdb_datadir, _("Set GDB's data directory."), 1625 _("Show GDB's data directory."), 1626 _("\ 1627 When set, GDB uses the specified path to search for data files."), 1628 NULL, NULL, 1629 &setlist, 1630 &showlist); 1631 } 1632 1633 void 1634 gdb_init (char *argv0) 1635 { 1636 if (pre_init_ui_hook) 1637 pre_init_ui_hook (); 1638 1639 /* Run the init function of each source file. */ 1640 1641 #ifdef __MSDOS__ 1642 /* Make sure we return to the original directory upon exit, come 1643 what may, since the OS doesn't do that for us. */ 1644 make_final_cleanup (do_chdir_cleanup, xstrdup (current_directory)); 1645 #endif 1646 1647 init_cmd_lists (); /* This needs to be done first. */ 1648 initialize_targets (); /* Setup target_terminal macros for utils.c. */ 1649 initialize_utils (); /* Make errors and warnings possible. */ 1650 1651 /* Here is where we call all the _initialize_foo routines. */ 1652 initialize_all_files (); 1653 1654 /* This creates the current_program_space. Do this after all the 1655 _initialize_foo routines have had a chance to install their 1656 per-sspace data keys. Also do this before 1657 initialize_current_architecture is called, because it accesses 1658 exec_bfd of the current program space. */ 1659 initialize_progspace (); 1660 initialize_inferiors (); 1661 initialize_current_architecture (); 1662 init_cli_cmds(); 1663 init_main (); /* But that omits this file! Do it now. */ 1664 1665 initialize_stdin_serial (); 1666 1667 async_init_signals (); 1668 1669 /* We need a default language for parsing expressions, so simple 1670 things like "set width 0" won't fail if no language is explicitly 1671 set in a config file or implicitly set by reading an executable 1672 during startup. */ 1673 set_language (language_c); 1674 expected_language = current_language; /* Don't warn about the change. */ 1675 1676 /* Allow another UI to initialize. If the UI fails to initialize, 1677 and it wants GDB to revert to the CLI, it should clear 1678 deprecated_init_ui_hook. */ 1679 if (deprecated_init_ui_hook) 1680 deprecated_init_ui_hook (argv0); 1681 1682 #ifdef HAVE_PYTHON 1683 /* Python initialization can require various commands to be 1684 installed. For example "info pretty-printer" needs the "info" 1685 prefix to be installed. Keep things simple and just do final 1686 python initialization here. */ 1687 finish_python_initialization (); 1688 #endif 1689 } 1690