| 1 | /* General utility routines for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
| 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software |
| 5 | 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 2 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, write to the Free Software |
| 21 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 22 | Boston, MA 02111-1307, USA. */ |
| 23 | |
| 24 | #include "defs.h" |
| 25 | #include "gdb_assert.h" |
| 26 | #include <ctype.h> |
| 27 | #include "gdb_string.h" |
| 28 | #include "event-top.h" |
| 29 | |
| 30 | #ifdef __GO32__ |
| 31 | #include <pc.h> |
| 32 | #endif |
| 33 | |
| 34 | /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */ |
| 35 | #ifdef reg |
| 36 | #undef reg |
| 37 | #endif |
| 38 | |
| 39 | #include <signal.h> |
| 40 | #include "gdbcmd.h" |
| 41 | #include "serial.h" |
| 42 | #include "bfd.h" |
| 43 | #include "target.h" |
| 44 | #include "demangle.h" |
| 45 | #include "expression.h" |
| 46 | #include "language.h" |
| 47 | #include "charset.h" |
| 48 | #include "annotate.h" |
| 49 | #include "filenames.h" |
| 50 | |
| 51 | #include "inferior.h" /* for signed_pointer_to_address */ |
| 52 | |
| 53 | #include <sys/param.h> /* For MAXPATHLEN */ |
| 54 | |
| 55 | #ifdef HAVE_CURSES_H |
| 56 | #include <curses.h> |
| 57 | #endif |
| 58 | #ifdef HAVE_TERM_H |
| 59 | #include <term.h> |
| 60 | #endif |
| 61 | |
| 62 | #include <readline/readline.h> |
| 63 | |
| 64 | #ifdef USE_MMALLOC |
| 65 | #include "mmalloc.h" |
| 66 | #endif |
| 67 | |
| 68 | #ifdef NEED_DECLARATION_MALLOC |
| 69 | extern PTR malloc (); /* OK: PTR */ |
| 70 | #endif |
| 71 | #ifdef NEED_DECLARATION_REALLOC |
| 72 | extern PTR realloc (); /* OK: PTR */ |
| 73 | #endif |
| 74 | #ifdef NEED_DECLARATION_FREE |
| 75 | extern void free (); |
| 76 | #endif |
| 77 | /* Actually, we'll never have the decl, since we don't define _GNU_SOURCE. */ |
| 78 | #if defined(HAVE_CANONICALIZE_FILE_NAME) \ |
| 79 | && defined(NEED_DECLARATION_CANONICALIZE_FILE_NAME) |
| 80 | extern char *canonicalize_file_name (const char *); |
| 81 | #endif |
| 82 | |
| 83 | /* readline defines this. */ |
| 84 | #undef savestring |
| 85 | |
| 86 | void (*error_begin_hook) (void); |
| 87 | |
| 88 | /* Holds the last error message issued by gdb */ |
| 89 | |
| 90 | static struct ui_file *gdb_lasterr; |
| 91 | |
| 92 | /* Prototypes for local functions */ |
| 93 | |
| 94 | static void vfprintf_maybe_filtered (struct ui_file *, const char *, |
| 95 | va_list, int); |
| 96 | |
| 97 | static void fputs_maybe_filtered (const char *, struct ui_file *, int); |
| 98 | |
| 99 | #if defined (USE_MMALLOC) && !defined (NO_MMCHECK) |
| 100 | static void malloc_botch (void); |
| 101 | #endif |
| 102 | |
| 103 | static void prompt_for_continue (void); |
| 104 | |
| 105 | static void set_width_command (char *, int, struct cmd_list_element *); |
| 106 | |
| 107 | static void set_width (void); |
| 108 | |
| 109 | /* Chain of cleanup actions established with make_cleanup, |
| 110 | to be executed if an error happens. */ |
| 111 | |
| 112 | static struct cleanup *cleanup_chain; /* cleaned up after a failed command */ |
| 113 | static struct cleanup *final_cleanup_chain; /* cleaned up when gdb exits */ |
| 114 | static struct cleanup *run_cleanup_chain; /* cleaned up on each 'run' */ |
| 115 | static struct cleanup *exec_cleanup_chain; /* cleaned up on each execution command */ |
| 116 | /* cleaned up on each error from within an execution command */ |
| 117 | static struct cleanup *exec_error_cleanup_chain; |
| 118 | |
| 119 | /* Pointer to what is left to do for an execution command after the |
| 120 | target stops. Used only in asynchronous mode, by targets that |
| 121 | support async execution. The finish and until commands use it. So |
| 122 | does the target extended-remote command. */ |
| 123 | struct continuation *cmd_continuation; |
| 124 | struct continuation *intermediate_continuation; |
| 125 | |
| 126 | /* Nonzero if we have job control. */ |
| 127 | |
| 128 | int job_control; |
| 129 | |
| 130 | /* Nonzero means a quit has been requested. */ |
| 131 | |
| 132 | int quit_flag; |
| 133 | |
| 134 | /* Nonzero means quit immediately if Control-C is typed now, rather |
| 135 | than waiting until QUIT is executed. Be careful in setting this; |
| 136 | code which executes with immediate_quit set has to be very careful |
| 137 | about being able to deal with being interrupted at any time. It is |
| 138 | almost always better to use QUIT; the only exception I can think of |
| 139 | is being able to quit out of a system call (using EINTR loses if |
| 140 | the SIGINT happens between the previous QUIT and the system call). |
| 141 | To immediately quit in the case in which a SIGINT happens between |
| 142 | the previous QUIT and setting immediate_quit (desirable anytime we |
| 143 | expect to block), call QUIT after setting immediate_quit. */ |
| 144 | |
| 145 | int immediate_quit; |
| 146 | |
| 147 | /* Nonzero means that encoded C++/ObjC names should be printed out in their |
| 148 | C++/ObjC form rather than raw. */ |
| 149 | |
| 150 | int demangle = 1; |
| 151 | |
| 152 | /* Nonzero means that encoded C++/ObjC names should be printed out in their |
| 153 | C++/ObjC form even in assembler language displays. If this is set, but |
| 154 | DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */ |
| 155 | |
| 156 | int asm_demangle = 0; |
| 157 | |
| 158 | /* Nonzero means that strings with character values >0x7F should be printed |
| 159 | as octal escapes. Zero means just print the value (e.g. it's an |
| 160 | international character, and the terminal or window can cope.) */ |
| 161 | |
| 162 | int sevenbit_strings = 0; |
| 163 | |
| 164 | /* String to be printed before error messages, if any. */ |
| 165 | |
| 166 | char *error_pre_print; |
| 167 | |
| 168 | /* String to be printed before quit messages, if any. */ |
| 169 | |
| 170 | char *quit_pre_print; |
| 171 | |
| 172 | /* String to be printed before warning messages, if any. */ |
| 173 | |
| 174 | char *warning_pre_print = "\nwarning: "; |
| 175 | |
| 176 | int pagination_enabled = 1; |
| 177 | \f |
| 178 | |
| 179 | /* Add a new cleanup to the cleanup_chain, |
| 180 | and return the previous chain pointer |
| 181 | to be passed later to do_cleanups or discard_cleanups. |
| 182 | Args are FUNCTION to clean up with, and ARG to pass to it. */ |
| 183 | |
| 184 | struct cleanup * |
| 185 | make_cleanup (make_cleanup_ftype *function, void *arg) |
| 186 | { |
| 187 | return make_my_cleanup (&cleanup_chain, function, arg); |
| 188 | } |
| 189 | |
| 190 | struct cleanup * |
| 191 | make_final_cleanup (make_cleanup_ftype *function, void *arg) |
| 192 | { |
| 193 | return make_my_cleanup (&final_cleanup_chain, function, arg); |
| 194 | } |
| 195 | |
| 196 | struct cleanup * |
| 197 | make_run_cleanup (make_cleanup_ftype *function, void *arg) |
| 198 | { |
| 199 | return make_my_cleanup (&run_cleanup_chain, function, arg); |
| 200 | } |
| 201 | |
| 202 | struct cleanup * |
| 203 | make_exec_cleanup (make_cleanup_ftype *function, void *arg) |
| 204 | { |
| 205 | return make_my_cleanup (&exec_cleanup_chain, function, arg); |
| 206 | } |
| 207 | |
| 208 | struct cleanup * |
| 209 | make_exec_error_cleanup (make_cleanup_ftype *function, void *arg) |
| 210 | { |
| 211 | return make_my_cleanup (&exec_error_cleanup_chain, function, arg); |
| 212 | } |
| 213 | |
| 214 | static void |
| 215 | do_freeargv (void *arg) |
| 216 | { |
| 217 | freeargv ((char **) arg); |
| 218 | } |
| 219 | |
| 220 | struct cleanup * |
| 221 | make_cleanup_freeargv (char **arg) |
| 222 | { |
| 223 | return make_my_cleanup (&cleanup_chain, do_freeargv, arg); |
| 224 | } |
| 225 | |
| 226 | static void |
| 227 | do_bfd_close_cleanup (void *arg) |
| 228 | { |
| 229 | bfd_close (arg); |
| 230 | } |
| 231 | |
| 232 | struct cleanup * |
| 233 | make_cleanup_bfd_close (bfd *abfd) |
| 234 | { |
| 235 | return make_cleanup (do_bfd_close_cleanup, abfd); |
| 236 | } |
| 237 | |
| 238 | static void |
| 239 | do_close_cleanup (void *arg) |
| 240 | { |
| 241 | int *fd = arg; |
| 242 | close (*fd); |
| 243 | xfree (fd); |
| 244 | } |
| 245 | |
| 246 | struct cleanup * |
| 247 | make_cleanup_close (int fd) |
| 248 | { |
| 249 | int *saved_fd = xmalloc (sizeof (fd)); |
| 250 | *saved_fd = fd; |
| 251 | return make_cleanup (do_close_cleanup, saved_fd); |
| 252 | } |
| 253 | |
| 254 | static void |
| 255 | do_ui_file_delete (void *arg) |
| 256 | { |
| 257 | ui_file_delete (arg); |
| 258 | } |
| 259 | |
| 260 | struct cleanup * |
| 261 | make_cleanup_ui_file_delete (struct ui_file *arg) |
| 262 | { |
| 263 | return make_my_cleanup (&cleanup_chain, do_ui_file_delete, arg); |
| 264 | } |
| 265 | |
| 266 | struct cleanup * |
| 267 | make_my_cleanup (struct cleanup **pmy_chain, make_cleanup_ftype *function, |
| 268 | void *arg) |
| 269 | { |
| 270 | register struct cleanup *new |
| 271 | = (struct cleanup *) xmalloc (sizeof (struct cleanup)); |
| 272 | register struct cleanup *old_chain = *pmy_chain; |
| 273 | |
| 274 | new->next = *pmy_chain; |
| 275 | new->function = function; |
| 276 | new->arg = arg; |
| 277 | *pmy_chain = new; |
| 278 | |
| 279 | return old_chain; |
| 280 | } |
| 281 | |
| 282 | /* Discard cleanups and do the actions they describe |
| 283 | until we get back to the point OLD_CHAIN in the cleanup_chain. */ |
| 284 | |
| 285 | void |
| 286 | do_cleanups (register struct cleanup *old_chain) |
| 287 | { |
| 288 | do_my_cleanups (&cleanup_chain, old_chain); |
| 289 | } |
| 290 | |
| 291 | void |
| 292 | do_final_cleanups (register struct cleanup *old_chain) |
| 293 | { |
| 294 | do_my_cleanups (&final_cleanup_chain, old_chain); |
| 295 | } |
| 296 | |
| 297 | void |
| 298 | do_run_cleanups (register struct cleanup *old_chain) |
| 299 | { |
| 300 | do_my_cleanups (&run_cleanup_chain, old_chain); |
| 301 | } |
| 302 | |
| 303 | void |
| 304 | do_exec_cleanups (register struct cleanup *old_chain) |
| 305 | { |
| 306 | do_my_cleanups (&exec_cleanup_chain, old_chain); |
| 307 | } |
| 308 | |
| 309 | void |
| 310 | do_exec_error_cleanups (register struct cleanup *old_chain) |
| 311 | { |
| 312 | do_my_cleanups (&exec_error_cleanup_chain, old_chain); |
| 313 | } |
| 314 | |
| 315 | void |
| 316 | do_my_cleanups (register struct cleanup **pmy_chain, |
| 317 | register struct cleanup *old_chain) |
| 318 | { |
| 319 | register struct cleanup *ptr; |
| 320 | while ((ptr = *pmy_chain) != old_chain) |
| 321 | { |
| 322 | *pmy_chain = ptr->next; /* Do this first incase recursion */ |
| 323 | (*ptr->function) (ptr->arg); |
| 324 | xfree (ptr); |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | /* Discard cleanups, not doing the actions they describe, |
| 329 | until we get back to the point OLD_CHAIN in the cleanup_chain. */ |
| 330 | |
| 331 | void |
| 332 | discard_cleanups (register struct cleanup *old_chain) |
| 333 | { |
| 334 | discard_my_cleanups (&cleanup_chain, old_chain); |
| 335 | } |
| 336 | |
| 337 | void |
| 338 | discard_final_cleanups (register struct cleanup *old_chain) |
| 339 | { |
| 340 | discard_my_cleanups (&final_cleanup_chain, old_chain); |
| 341 | } |
| 342 | |
| 343 | void |
| 344 | discard_exec_error_cleanups (register struct cleanup *old_chain) |
| 345 | { |
| 346 | discard_my_cleanups (&exec_error_cleanup_chain, old_chain); |
| 347 | } |
| 348 | |
| 349 | void |
| 350 | discard_my_cleanups (register struct cleanup **pmy_chain, |
| 351 | register struct cleanup *old_chain) |
| 352 | { |
| 353 | register struct cleanup *ptr; |
| 354 | while ((ptr = *pmy_chain) != old_chain) |
| 355 | { |
| 356 | *pmy_chain = ptr->next; |
| 357 | xfree (ptr); |
| 358 | } |
| 359 | } |
| 360 | |
| 361 | /* Set the cleanup_chain to 0, and return the old cleanup chain. */ |
| 362 | struct cleanup * |
| 363 | save_cleanups (void) |
| 364 | { |
| 365 | return save_my_cleanups (&cleanup_chain); |
| 366 | } |
| 367 | |
| 368 | struct cleanup * |
| 369 | save_final_cleanups (void) |
| 370 | { |
| 371 | return save_my_cleanups (&final_cleanup_chain); |
| 372 | } |
| 373 | |
| 374 | struct cleanup * |
| 375 | save_my_cleanups (struct cleanup **pmy_chain) |
| 376 | { |
| 377 | struct cleanup *old_chain = *pmy_chain; |
| 378 | |
| 379 | *pmy_chain = 0; |
| 380 | return old_chain; |
| 381 | } |
| 382 | |
| 383 | /* Restore the cleanup chain from a previously saved chain. */ |
| 384 | void |
| 385 | restore_cleanups (struct cleanup *chain) |
| 386 | { |
| 387 | restore_my_cleanups (&cleanup_chain, chain); |
| 388 | } |
| 389 | |
| 390 | void |
| 391 | restore_final_cleanups (struct cleanup *chain) |
| 392 | { |
| 393 | restore_my_cleanups (&final_cleanup_chain, chain); |
| 394 | } |
| 395 | |
| 396 | void |
| 397 | restore_my_cleanups (struct cleanup **pmy_chain, struct cleanup *chain) |
| 398 | { |
| 399 | *pmy_chain = chain; |
| 400 | } |
| 401 | |
| 402 | /* This function is useful for cleanups. |
| 403 | Do |
| 404 | |
| 405 | foo = xmalloc (...); |
| 406 | old_chain = make_cleanup (free_current_contents, &foo); |
| 407 | |
| 408 | to arrange to free the object thus allocated. */ |
| 409 | |
| 410 | void |
| 411 | free_current_contents (void *ptr) |
| 412 | { |
| 413 | void **location = ptr; |
| 414 | if (location == NULL) |
| 415 | internal_error (__FILE__, __LINE__, |
| 416 | "free_current_contents: NULL pointer"); |
| 417 | if (*location != NULL) |
| 418 | { |
| 419 | xfree (*location); |
| 420 | *location = NULL; |
| 421 | } |
| 422 | } |
| 423 | |
| 424 | /* Provide a known function that does nothing, to use as a base for |
| 425 | for a possibly long chain of cleanups. This is useful where we |
| 426 | use the cleanup chain for handling normal cleanups as well as dealing |
| 427 | with cleanups that need to be done as a result of a call to error(). |
| 428 | In such cases, we may not be certain where the first cleanup is, unless |
| 429 | we have a do-nothing one to always use as the base. */ |
| 430 | |
| 431 | /* ARGSUSED */ |
| 432 | void |
| 433 | null_cleanup (void *arg) |
| 434 | { |
| 435 | } |
| 436 | |
| 437 | /* Add a continuation to the continuation list, the global list |
| 438 | cmd_continuation. The new continuation will be added at the front.*/ |
| 439 | void |
| 440 | add_continuation (void (*continuation_hook) (struct continuation_arg *), |
| 441 | struct continuation_arg *arg_list) |
| 442 | { |
| 443 | struct continuation *continuation_ptr; |
| 444 | |
| 445 | continuation_ptr = |
| 446 | (struct continuation *) xmalloc (sizeof (struct continuation)); |
| 447 | continuation_ptr->continuation_hook = continuation_hook; |
| 448 | continuation_ptr->arg_list = arg_list; |
| 449 | continuation_ptr->next = cmd_continuation; |
| 450 | cmd_continuation = continuation_ptr; |
| 451 | } |
| 452 | |
| 453 | /* Walk down the cmd_continuation list, and execute all the |
| 454 | continuations. There is a problem though. In some cases new |
| 455 | continuations may be added while we are in the middle of this |
| 456 | loop. If this happens they will be added in the front, and done |
| 457 | before we have a chance of exhausting those that were already |
| 458 | there. We need to then save the beginning of the list in a pointer |
| 459 | and do the continuations from there on, instead of using the |
| 460 | global beginning of list as our iteration pointer.*/ |
| 461 | void |
| 462 | do_all_continuations (void) |
| 463 | { |
| 464 | struct continuation *continuation_ptr; |
| 465 | struct continuation *saved_continuation; |
| 466 | |
| 467 | /* Copy the list header into another pointer, and set the global |
| 468 | list header to null, so that the global list can change as a side |
| 469 | effect of invoking the continuations and the processing of |
| 470 | the preexisting continuations will not be affected. */ |
| 471 | continuation_ptr = cmd_continuation; |
| 472 | cmd_continuation = NULL; |
| 473 | |
| 474 | /* Work now on the list we have set aside. */ |
| 475 | while (continuation_ptr) |
| 476 | { |
| 477 | (continuation_ptr->continuation_hook) (continuation_ptr->arg_list); |
| 478 | saved_continuation = continuation_ptr; |
| 479 | continuation_ptr = continuation_ptr->next; |
| 480 | xfree (saved_continuation); |
| 481 | } |
| 482 | } |
| 483 | |
| 484 | /* Walk down the cmd_continuation list, and get rid of all the |
| 485 | continuations. */ |
| 486 | void |
| 487 | discard_all_continuations (void) |
| 488 | { |
| 489 | struct continuation *continuation_ptr; |
| 490 | |
| 491 | while (cmd_continuation) |
| 492 | { |
| 493 | continuation_ptr = cmd_continuation; |
| 494 | cmd_continuation = continuation_ptr->next; |
| 495 | xfree (continuation_ptr); |
| 496 | } |
| 497 | } |
| 498 | |
| 499 | /* Add a continuation to the continuation list, the global list |
| 500 | intermediate_continuation. The new continuation will be added at the front.*/ |
| 501 | void |
| 502 | add_intermediate_continuation (void (*continuation_hook) |
| 503 | (struct continuation_arg *), |
| 504 | struct continuation_arg *arg_list) |
| 505 | { |
| 506 | struct continuation *continuation_ptr; |
| 507 | |
| 508 | continuation_ptr = |
| 509 | (struct continuation *) xmalloc (sizeof (struct continuation)); |
| 510 | continuation_ptr->continuation_hook = continuation_hook; |
| 511 | continuation_ptr->arg_list = arg_list; |
| 512 | continuation_ptr->next = intermediate_continuation; |
| 513 | intermediate_continuation = continuation_ptr; |
| 514 | } |
| 515 | |
| 516 | /* Walk down the cmd_continuation list, and execute all the |
| 517 | continuations. There is a problem though. In some cases new |
| 518 | continuations may be added while we are in the middle of this |
| 519 | loop. If this happens they will be added in the front, and done |
| 520 | before we have a chance of exhausting those that were already |
| 521 | there. We need to then save the beginning of the list in a pointer |
| 522 | and do the continuations from there on, instead of using the |
| 523 | global beginning of list as our iteration pointer.*/ |
| 524 | void |
| 525 | do_all_intermediate_continuations (void) |
| 526 | { |
| 527 | struct continuation *continuation_ptr; |
| 528 | struct continuation *saved_continuation; |
| 529 | |
| 530 | /* Copy the list header into another pointer, and set the global |
| 531 | list header to null, so that the global list can change as a side |
| 532 | effect of invoking the continuations and the processing of |
| 533 | the preexisting continuations will not be affected. */ |
| 534 | continuation_ptr = intermediate_continuation; |
| 535 | intermediate_continuation = NULL; |
| 536 | |
| 537 | /* Work now on the list we have set aside. */ |
| 538 | while (continuation_ptr) |
| 539 | { |
| 540 | (continuation_ptr->continuation_hook) (continuation_ptr->arg_list); |
| 541 | saved_continuation = continuation_ptr; |
| 542 | continuation_ptr = continuation_ptr->next; |
| 543 | xfree (saved_continuation); |
| 544 | } |
| 545 | } |
| 546 | |
| 547 | /* Walk down the cmd_continuation list, and get rid of all the |
| 548 | continuations. */ |
| 549 | void |
| 550 | discard_all_intermediate_continuations (void) |
| 551 | { |
| 552 | struct continuation *continuation_ptr; |
| 553 | |
| 554 | while (intermediate_continuation) |
| 555 | { |
| 556 | continuation_ptr = intermediate_continuation; |
| 557 | intermediate_continuation = continuation_ptr->next; |
| 558 | xfree (continuation_ptr); |
| 559 | } |
| 560 | } |
| 561 | \f |
| 562 | |
| 563 | |
| 564 | /* Print a warning message. The first argument STRING is the warning |
| 565 | message, used as an fprintf format string, the second is the |
| 566 | va_list of arguments for that string. A warning is unfiltered (not |
| 567 | paginated) so that the user does not need to page through each |
| 568 | screen full of warnings when there are lots of them. */ |
| 569 | |
| 570 | void |
| 571 | vwarning (const char *string, va_list args) |
| 572 | { |
| 573 | if (warning_hook) |
| 574 | (*warning_hook) (string, args); |
| 575 | else |
| 576 | { |
| 577 | target_terminal_ours (); |
| 578 | wrap_here (""); /* Force out any buffered output */ |
| 579 | gdb_flush (gdb_stdout); |
| 580 | if (warning_pre_print) |
| 581 | fprintf_unfiltered (gdb_stderr, warning_pre_print); |
| 582 | vfprintf_unfiltered (gdb_stderr, string, args); |
| 583 | fprintf_unfiltered (gdb_stderr, "\n"); |
| 584 | va_end (args); |
| 585 | } |
| 586 | } |
| 587 | |
| 588 | /* Print a warning message. |
| 589 | The first argument STRING is the warning message, used as a fprintf string, |
| 590 | and the remaining args are passed as arguments to it. |
| 591 | The primary difference between warnings and errors is that a warning |
| 592 | does not force the return to command level. */ |
| 593 | |
| 594 | void |
| 595 | warning (const char *string, ...) |
| 596 | { |
| 597 | va_list args; |
| 598 | va_start (args, string); |
| 599 | vwarning (string, args); |
| 600 | va_end (args); |
| 601 | } |
| 602 | |
| 603 | /* Print an error message and return to command level. |
| 604 | The first argument STRING is the error message, used as a fprintf string, |
| 605 | and the remaining args are passed as arguments to it. */ |
| 606 | |
| 607 | NORETURN void |
| 608 | verror (const char *string, va_list args) |
| 609 | { |
| 610 | struct ui_file *tmp_stream = mem_fileopen (); |
| 611 | make_cleanup_ui_file_delete (tmp_stream); |
| 612 | vfprintf_unfiltered (tmp_stream, string, args); |
| 613 | error_stream (tmp_stream); |
| 614 | } |
| 615 | |
| 616 | NORETURN void |
| 617 | error (const char *string, ...) |
| 618 | { |
| 619 | va_list args; |
| 620 | va_start (args, string); |
| 621 | verror (string, args); |
| 622 | va_end (args); |
| 623 | } |
| 624 | |
| 625 | static void |
| 626 | do_write (void *data, const char *buffer, long length_buffer) |
| 627 | { |
| 628 | ui_file_write (data, buffer, length_buffer); |
| 629 | } |
| 630 | |
| 631 | NORETURN void |
| 632 | error_stream (struct ui_file *stream) |
| 633 | { |
| 634 | if (error_begin_hook) |
| 635 | error_begin_hook (); |
| 636 | |
| 637 | /* Copy the stream into the GDB_LASTERR buffer. */ |
| 638 | ui_file_rewind (gdb_lasterr); |
| 639 | ui_file_put (stream, do_write, gdb_lasterr); |
| 640 | |
| 641 | /* Write the message plus any error_pre_print to gdb_stderr. */ |
| 642 | target_terminal_ours (); |
| 643 | wrap_here (""); /* Force out any buffered output */ |
| 644 | gdb_flush (gdb_stdout); |
| 645 | annotate_error_begin (); |
| 646 | if (error_pre_print) |
| 647 | fprintf_filtered (gdb_stderr, error_pre_print); |
| 648 | ui_file_put (stream, do_write, gdb_stderr); |
| 649 | fprintf_filtered (gdb_stderr, "\n"); |
| 650 | |
| 651 | throw_exception (RETURN_ERROR); |
| 652 | } |
| 653 | |
| 654 | /* Get the last error message issued by gdb */ |
| 655 | |
| 656 | char * |
| 657 | error_last_message (void) |
| 658 | { |
| 659 | long len; |
| 660 | return ui_file_xstrdup (gdb_lasterr, &len); |
| 661 | } |
| 662 | |
| 663 | /* This is to be called by main() at the very beginning */ |
| 664 | |
| 665 | void |
| 666 | error_init (void) |
| 667 | { |
| 668 | gdb_lasterr = mem_fileopen (); |
| 669 | } |
| 670 | |
| 671 | /* Print a message reporting an internal error/warning. Ask the user |
| 672 | if they want to continue, dump core, or just exit. Return |
| 673 | something to indicate a quit. */ |
| 674 | |
| 675 | struct internal_problem |
| 676 | { |
| 677 | const char *name; |
| 678 | /* FIXME: cagney/2002-08-15: There should be ``maint set/show'' |
| 679 | commands available for controlling these variables. */ |
| 680 | enum auto_boolean should_quit; |
| 681 | enum auto_boolean should_dump_core; |
| 682 | }; |
| 683 | |
| 684 | /* Report a problem, internal to GDB, to the user. Once the problem |
| 685 | has been reported, and assuming GDB didn't quit, the caller can |
| 686 | either allow execution to resume or throw an error. */ |
| 687 | |
| 688 | static void |
| 689 | internal_vproblem (struct internal_problem *problem, |
| 690 | const char *file, int line, const char *fmt, va_list ap) |
| 691 | { |
| 692 | static char msg[] = "Recursive internal problem.\n"; |
| 693 | static int dejavu; |
| 694 | int quit_p; |
| 695 | int dump_core_p; |
| 696 | |
| 697 | /* Don't allow infinite error/warning recursion. */ |
| 698 | switch (dejavu) |
| 699 | { |
| 700 | case 0: |
| 701 | dejavu = 1; |
| 702 | break; |
| 703 | case 1: |
| 704 | dejavu = 2; |
| 705 | fputs_unfiltered (msg, gdb_stderr); |
| 706 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
| 707 | default: |
| 708 | dejavu = 3; |
| 709 | write (STDERR_FILENO, msg, sizeof (msg)); |
| 710 | exit (1); |
| 711 | } |
| 712 | |
| 713 | /* Try to get the message out and at the start of a new line. */ |
| 714 | target_terminal_ours (); |
| 715 | begin_line (); |
| 716 | |
| 717 | /* The error/warning message. Format using a style similar to a |
| 718 | compiler error message. */ |
| 719 | fprintf_unfiltered (gdb_stderr, "%s:%d: %s: ", file, line, problem->name); |
| 720 | vfprintf_unfiltered (gdb_stderr, fmt, ap); |
| 721 | fputs_unfiltered ("\n", gdb_stderr); |
| 722 | |
| 723 | /* Provide more details so that the user knows that they are living |
| 724 | on the edge. */ |
| 725 | fprintf_unfiltered (gdb_stderr, "\ |
| 726 | A problem internal to GDB has been detected. Further\n\ |
| 727 | debugging may prove unreliable.\n"); |
| 728 | |
| 729 | switch (problem->should_quit) |
| 730 | { |
| 731 | case AUTO_BOOLEAN_AUTO: |
| 732 | /* Default (yes/batch case) is to quit GDB. When in batch mode |
| 733 | this lessens the likelhood of GDB going into an infinate |
| 734 | loop. */ |
| 735 | quit_p = query ("Quit this debugging session? "); |
| 736 | break; |
| 737 | case AUTO_BOOLEAN_TRUE: |
| 738 | quit_p = 1; |
| 739 | break; |
| 740 | case AUTO_BOOLEAN_FALSE: |
| 741 | quit_p = 0; |
| 742 | break; |
| 743 | default: |
| 744 | internal_error (__FILE__, __LINE__, "bad switch"); |
| 745 | } |
| 746 | |
| 747 | switch (problem->should_dump_core) |
| 748 | { |
| 749 | case AUTO_BOOLEAN_AUTO: |
| 750 | /* Default (yes/batch case) is to dump core. This leaves a GDB |
| 751 | `dropping' so that it is easier to see that something went |
| 752 | wrong in GDB. */ |
| 753 | dump_core_p = query ("Create a core file of GDB? "); |
| 754 | break; |
| 755 | break; |
| 756 | case AUTO_BOOLEAN_TRUE: |
| 757 | dump_core_p = 1; |
| 758 | break; |
| 759 | case AUTO_BOOLEAN_FALSE: |
| 760 | dump_core_p = 0; |
| 761 | break; |
| 762 | default: |
| 763 | internal_error (__FILE__, __LINE__, "bad switch"); |
| 764 | } |
| 765 | |
| 766 | if (quit_p) |
| 767 | { |
| 768 | if (dump_core_p) |
| 769 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
| 770 | else |
| 771 | exit (1); |
| 772 | } |
| 773 | else |
| 774 | { |
| 775 | if (dump_core_p) |
| 776 | { |
| 777 | if (fork () == 0) |
| 778 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
| 779 | } |
| 780 | } |
| 781 | |
| 782 | dejavu = 0; |
| 783 | } |
| 784 | |
| 785 | static struct internal_problem internal_error_problem = { |
| 786 | "internal-error", AUTO_BOOLEAN_AUTO, AUTO_BOOLEAN_AUTO |
| 787 | }; |
| 788 | |
| 789 | NORETURN void |
| 790 | internal_verror (const char *file, int line, const char *fmt, va_list ap) |
| 791 | { |
| 792 | internal_vproblem (&internal_error_problem, file, line, fmt, ap); |
| 793 | throw_exception (RETURN_ERROR); |
| 794 | } |
| 795 | |
| 796 | NORETURN void |
| 797 | internal_error (const char *file, int line, const char *string, ...) |
| 798 | { |
| 799 | va_list ap; |
| 800 | va_start (ap, string); |
| 801 | internal_verror (file, line, string, ap); |
| 802 | va_end (ap); |
| 803 | } |
| 804 | |
| 805 | static struct internal_problem internal_warning_problem = { |
| 806 | "internal-error", AUTO_BOOLEAN_AUTO, AUTO_BOOLEAN_AUTO |
| 807 | }; |
| 808 | |
| 809 | void |
| 810 | internal_vwarning (const char *file, int line, const char *fmt, va_list ap) |
| 811 | { |
| 812 | internal_vproblem (&internal_warning_problem, file, line, fmt, ap); |
| 813 | } |
| 814 | |
| 815 | void |
| 816 | internal_warning (const char *file, int line, const char *string, ...) |
| 817 | { |
| 818 | va_list ap; |
| 819 | va_start (ap, string); |
| 820 | internal_vwarning (file, line, string, ap); |
| 821 | va_end (ap); |
| 822 | } |
| 823 | |
| 824 | /* The strerror() function can return NULL for errno values that are |
| 825 | out of range. Provide a "safe" version that always returns a |
| 826 | printable string. */ |
| 827 | |
| 828 | char * |
| 829 | safe_strerror (int errnum) |
| 830 | { |
| 831 | char *msg; |
| 832 | static char buf[32]; |
| 833 | |
| 834 | if ((msg = strerror (errnum)) == NULL) |
| 835 | { |
| 836 | sprintf (buf, "(undocumented errno %d)", errnum); |
| 837 | msg = buf; |
| 838 | } |
| 839 | return (msg); |
| 840 | } |
| 841 | |
| 842 | /* Print the system error message for errno, and also mention STRING |
| 843 | as the file name for which the error was encountered. |
| 844 | Then return to command level. */ |
| 845 | |
| 846 | NORETURN void |
| 847 | perror_with_name (const char *string) |
| 848 | { |
| 849 | char *err; |
| 850 | char *combined; |
| 851 | |
| 852 | err = safe_strerror (errno); |
| 853 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); |
| 854 | strcpy (combined, string); |
| 855 | strcat (combined, ": "); |
| 856 | strcat (combined, err); |
| 857 | |
| 858 | /* I understand setting these is a matter of taste. Still, some people |
| 859 | may clear errno but not know about bfd_error. Doing this here is not |
| 860 | unreasonable. */ |
| 861 | bfd_set_error (bfd_error_no_error); |
| 862 | errno = 0; |
| 863 | |
| 864 | error ("%s.", combined); |
| 865 | } |
| 866 | |
| 867 | /* Print the system error message for ERRCODE, and also mention STRING |
| 868 | as the file name for which the error was encountered. */ |
| 869 | |
| 870 | void |
| 871 | print_sys_errmsg (const char *string, int errcode) |
| 872 | { |
| 873 | char *err; |
| 874 | char *combined; |
| 875 | |
| 876 | err = safe_strerror (errcode); |
| 877 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); |
| 878 | strcpy (combined, string); |
| 879 | strcat (combined, ": "); |
| 880 | strcat (combined, err); |
| 881 | |
| 882 | /* We want anything which was printed on stdout to come out first, before |
| 883 | this message. */ |
| 884 | gdb_flush (gdb_stdout); |
| 885 | fprintf_unfiltered (gdb_stderr, "%s.\n", combined); |
| 886 | } |
| 887 | |
| 888 | /* Control C eventually causes this to be called, at a convenient time. */ |
| 889 | |
| 890 | void |
| 891 | quit (void) |
| 892 | { |
| 893 | struct serial *gdb_stdout_serial = serial_fdopen (1); |
| 894 | |
| 895 | target_terminal_ours (); |
| 896 | |
| 897 | /* We want all output to appear now, before we print "Quit". We |
| 898 | have 3 levels of buffering we have to flush (it's possible that |
| 899 | some of these should be changed to flush the lower-level ones |
| 900 | too): */ |
| 901 | |
| 902 | /* 1. The _filtered buffer. */ |
| 903 | wrap_here ((char *) 0); |
| 904 | |
| 905 | /* 2. The stdio buffer. */ |
| 906 | gdb_flush (gdb_stdout); |
| 907 | gdb_flush (gdb_stderr); |
| 908 | |
| 909 | /* 3. The system-level buffer. */ |
| 910 | serial_drain_output (gdb_stdout_serial); |
| 911 | serial_un_fdopen (gdb_stdout_serial); |
| 912 | |
| 913 | annotate_error_begin (); |
| 914 | |
| 915 | /* Don't use *_filtered; we don't want to prompt the user to continue. */ |
| 916 | if (quit_pre_print) |
| 917 | fprintf_unfiltered (gdb_stderr, quit_pre_print); |
| 918 | |
| 919 | #ifdef __MSDOS__ |
| 920 | /* No steenking SIGINT will ever be coming our way when the |
| 921 | program is resumed. Don't lie. */ |
| 922 | fprintf_unfiltered (gdb_stderr, "Quit\n"); |
| 923 | #else |
| 924 | if (job_control |
| 925 | /* If there is no terminal switching for this target, then we can't |
| 926 | possibly get screwed by the lack of job control. */ |
| 927 | || current_target.to_terminal_ours == NULL) |
| 928 | fprintf_unfiltered (gdb_stderr, "Quit\n"); |
| 929 | else |
| 930 | fprintf_unfiltered (gdb_stderr, |
| 931 | "Quit (expect signal SIGINT when the program is resumed)\n"); |
| 932 | #endif |
| 933 | throw_exception (RETURN_QUIT); |
| 934 | } |
| 935 | |
| 936 | /* Control C comes here */ |
| 937 | void |
| 938 | request_quit (int signo) |
| 939 | { |
| 940 | quit_flag = 1; |
| 941 | /* Restore the signal handler. Harmless with BSD-style signals, needed |
| 942 | for System V-style signals. So just always do it, rather than worrying |
| 943 | about USG defines and stuff like that. */ |
| 944 | signal (signo, request_quit); |
| 945 | |
| 946 | #ifdef REQUEST_QUIT |
| 947 | REQUEST_QUIT; |
| 948 | #else |
| 949 | if (immediate_quit) |
| 950 | quit (); |
| 951 | #endif |
| 952 | } |
| 953 | \f |
| 954 | /* Memory management stuff (malloc friends). */ |
| 955 | |
| 956 | #if !defined (USE_MMALLOC) |
| 957 | |
| 958 | static void * |
| 959 | mmalloc (void *md, size_t size) |
| 960 | { |
| 961 | return malloc (size); /* NOTE: GDB's only call to malloc() */ |
| 962 | } |
| 963 | |
| 964 | static void * |
| 965 | mrealloc (void *md, void *ptr, size_t size) |
| 966 | { |
| 967 | if (ptr == 0) /* Guard against old realloc's */ |
| 968 | return mmalloc (md, size); |
| 969 | else |
| 970 | return realloc (ptr, size); /* NOTE: GDB's only call to ralloc() */ |
| 971 | } |
| 972 | |
| 973 | static void * |
| 974 | mcalloc (void *md, size_t number, size_t size) |
| 975 | { |
| 976 | return calloc (number, size); /* NOTE: GDB's only call to calloc() */ |
| 977 | } |
| 978 | |
| 979 | static void |
| 980 | mfree (void *md, void *ptr) |
| 981 | { |
| 982 | free (ptr); /* NOTE: GDB's only call to free() */ |
| 983 | } |
| 984 | |
| 985 | #endif /* USE_MMALLOC */ |
| 986 | |
| 987 | #if !defined (USE_MMALLOC) || defined (NO_MMCHECK) |
| 988 | |
| 989 | void |
| 990 | init_malloc (void *md) |
| 991 | { |
| 992 | } |
| 993 | |
| 994 | #else /* Have mmalloc and want corruption checking */ |
| 995 | |
| 996 | static void |
| 997 | malloc_botch (void) |
| 998 | { |
| 999 | fprintf_unfiltered (gdb_stderr, "Memory corruption\n"); |
| 1000 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
| 1001 | } |
| 1002 | |
| 1003 | /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified |
| 1004 | by MD, to detect memory corruption. Note that MD may be NULL to specify |
| 1005 | the default heap that grows via sbrk. |
| 1006 | |
| 1007 | Note that for freshly created regions, we must call mmcheckf prior to any |
| 1008 | mallocs in the region. Otherwise, any region which was allocated prior to |
| 1009 | installing the checking hooks, which is later reallocated or freed, will |
| 1010 | fail the checks! The mmcheck function only allows initial hooks to be |
| 1011 | installed before the first mmalloc. However, anytime after we have called |
| 1012 | mmcheck the first time to install the checking hooks, we can call it again |
| 1013 | to update the function pointer to the memory corruption handler. |
| 1014 | |
| 1015 | Returns zero on failure, non-zero on success. */ |
| 1016 | |
| 1017 | #ifndef MMCHECK_FORCE |
| 1018 | #define MMCHECK_FORCE 0 |
| 1019 | #endif |
| 1020 | |
| 1021 | void |
| 1022 | init_malloc (void *md) |
| 1023 | { |
| 1024 | if (!mmcheckf (md, malloc_botch, MMCHECK_FORCE)) |
| 1025 | { |
| 1026 | /* Don't use warning(), which relies on current_target being set |
| 1027 | to something other than dummy_target, until after |
| 1028 | initialize_all_files(). */ |
| 1029 | |
| 1030 | fprintf_unfiltered |
| 1031 | (gdb_stderr, |
| 1032 | "warning: failed to install memory consistency checks; "); |
| 1033 | fprintf_unfiltered (gdb_stderr, |
| 1034 | "configuration should define NO_MMCHECK or MMCHECK_FORCE\n"); |
| 1035 | } |
| 1036 | |
| 1037 | mmtrace (); |
| 1038 | } |
| 1039 | |
| 1040 | #endif /* Have mmalloc and want corruption checking */ |
| 1041 | |
| 1042 | /* Called when a memory allocation fails, with the number of bytes of |
| 1043 | memory requested in SIZE. */ |
| 1044 | |
| 1045 | NORETURN void |
| 1046 | nomem (long size) |
| 1047 | { |
| 1048 | if (size > 0) |
| 1049 | { |
| 1050 | internal_error (__FILE__, __LINE__, |
| 1051 | "virtual memory exhausted: can't allocate %ld bytes.", |
| 1052 | size); |
| 1053 | } |
| 1054 | else |
| 1055 | { |
| 1056 | internal_error (__FILE__, __LINE__, "virtual memory exhausted."); |
| 1057 | } |
| 1058 | } |
| 1059 | |
| 1060 | /* The xmmalloc() family of memory management routines. |
| 1061 | |
| 1062 | These are are like the mmalloc() family except that they implement |
| 1063 | consistent semantics and guard against typical memory management |
| 1064 | problems: if a malloc fails, an internal error is thrown; if |
| 1065 | free(NULL) is called, it is ignored; if *alloc(0) is called, NULL |
| 1066 | is returned. |
| 1067 | |
| 1068 | All these routines are implemented using the mmalloc() family. */ |
| 1069 | |
| 1070 | void * |
| 1071 | xmmalloc (void *md, size_t size) |
| 1072 | { |
| 1073 | void *val; |
| 1074 | |
| 1075 | if (size == 0) |
| 1076 | { |
| 1077 | val = NULL; |
| 1078 | } |
| 1079 | else |
| 1080 | { |
| 1081 | val = mmalloc (md, size); |
| 1082 | if (val == NULL) |
| 1083 | nomem (size); |
| 1084 | } |
| 1085 | return (val); |
| 1086 | } |
| 1087 | |
| 1088 | void * |
| 1089 | xmrealloc (void *md, void *ptr, size_t size) |
| 1090 | { |
| 1091 | void *val; |
| 1092 | |
| 1093 | if (size == 0) |
| 1094 | { |
| 1095 | if (ptr != NULL) |
| 1096 | mfree (md, ptr); |
| 1097 | val = NULL; |
| 1098 | } |
| 1099 | else |
| 1100 | { |
| 1101 | if (ptr != NULL) |
| 1102 | { |
| 1103 | val = mrealloc (md, ptr, size); |
| 1104 | } |
| 1105 | else |
| 1106 | { |
| 1107 | val = mmalloc (md, size); |
| 1108 | } |
| 1109 | if (val == NULL) |
| 1110 | { |
| 1111 | nomem (size); |
| 1112 | } |
| 1113 | } |
| 1114 | return (val); |
| 1115 | } |
| 1116 | |
| 1117 | void * |
| 1118 | xmcalloc (void *md, size_t number, size_t size) |
| 1119 | { |
| 1120 | void *mem; |
| 1121 | if (number == 0 || size == 0) |
| 1122 | mem = NULL; |
| 1123 | else |
| 1124 | { |
| 1125 | mem = mcalloc (md, number, size); |
| 1126 | if (mem == NULL) |
| 1127 | nomem (number * size); |
| 1128 | } |
| 1129 | return mem; |
| 1130 | } |
| 1131 | |
| 1132 | void |
| 1133 | xmfree (void *md, void *ptr) |
| 1134 | { |
| 1135 | if (ptr != NULL) |
| 1136 | mfree (md, ptr); |
| 1137 | } |
| 1138 | |
| 1139 | /* The xmalloc() (libiberty.h) family of memory management routines. |
| 1140 | |
| 1141 | These are like the ISO-C malloc() family except that they implement |
| 1142 | consistent semantics and guard against typical memory management |
| 1143 | problems. See xmmalloc() above for further information. |
| 1144 | |
| 1145 | All these routines are wrappers to the xmmalloc() family. */ |
| 1146 | |
| 1147 | /* NOTE: These are declared using PTR to ensure consistency with |
| 1148 | "libiberty.h". xfree() is GDB local. */ |
| 1149 | |
| 1150 | PTR /* OK: PTR */ |
| 1151 | xmalloc (size_t size) |
| 1152 | { |
| 1153 | return xmmalloc (NULL, size); |
| 1154 | } |
| 1155 | |
| 1156 | PTR /* OK: PTR */ |
| 1157 | xrealloc (PTR ptr, size_t size) /* OK: PTR */ |
| 1158 | { |
| 1159 | return xmrealloc (NULL, ptr, size); |
| 1160 | } |
| 1161 | |
| 1162 | PTR /* OK: PTR */ |
| 1163 | xcalloc (size_t number, size_t size) |
| 1164 | { |
| 1165 | return xmcalloc (NULL, number, size); |
| 1166 | } |
| 1167 | |
| 1168 | void |
| 1169 | xfree (void *ptr) |
| 1170 | { |
| 1171 | xmfree (NULL, ptr); |
| 1172 | } |
| 1173 | \f |
| 1174 | |
| 1175 | /* Like asprintf/vasprintf but get an internal_error if the call |
| 1176 | fails. */ |
| 1177 | |
| 1178 | void |
| 1179 | xasprintf (char **ret, const char *format, ...) |
| 1180 | { |
| 1181 | va_list args; |
| 1182 | va_start (args, format); |
| 1183 | xvasprintf (ret, format, args); |
| 1184 | va_end (args); |
| 1185 | } |
| 1186 | |
| 1187 | void |
| 1188 | xvasprintf (char **ret, const char *format, va_list ap) |
| 1189 | { |
| 1190 | int status = vasprintf (ret, format, ap); |
| 1191 | /* NULL could be returned due to a memory allocation problem; a |
| 1192 | badly format string; or something else. */ |
| 1193 | if ((*ret) == NULL) |
| 1194 | internal_error (__FILE__, __LINE__, |
| 1195 | "vasprintf returned NULL buffer (errno %d)", errno); |
| 1196 | /* A negative status with a non-NULL buffer shouldn't never |
| 1197 | happen. But to be sure. */ |
| 1198 | if (status < 0) |
| 1199 | internal_error (__FILE__, __LINE__, |
| 1200 | "vasprintf call failed (errno %d)", errno); |
| 1201 | } |
| 1202 | |
| 1203 | |
| 1204 | /* My replacement for the read system call. |
| 1205 | Used like `read' but keeps going if `read' returns too soon. */ |
| 1206 | |
| 1207 | int |
| 1208 | myread (int desc, char *addr, int len) |
| 1209 | { |
| 1210 | register int val; |
| 1211 | int orglen = len; |
| 1212 | |
| 1213 | while (len > 0) |
| 1214 | { |
| 1215 | val = read (desc, addr, len); |
| 1216 | if (val < 0) |
| 1217 | return val; |
| 1218 | if (val == 0) |
| 1219 | return orglen - len; |
| 1220 | len -= val; |
| 1221 | addr += val; |
| 1222 | } |
| 1223 | return orglen; |
| 1224 | } |
| 1225 | \f |
| 1226 | /* Make a copy of the string at PTR with SIZE characters |
| 1227 | (and add a null character at the end in the copy). |
| 1228 | Uses malloc to get the space. Returns the address of the copy. */ |
| 1229 | |
| 1230 | char * |
| 1231 | savestring (const char *ptr, size_t size) |
| 1232 | { |
| 1233 | register char *p = (char *) xmalloc (size + 1); |
| 1234 | memcpy (p, ptr, size); |
| 1235 | p[size] = 0; |
| 1236 | return p; |
| 1237 | } |
| 1238 | |
| 1239 | char * |
| 1240 | msavestring (void *md, const char *ptr, size_t size) |
| 1241 | { |
| 1242 | register char *p = (char *) xmmalloc (md, size + 1); |
| 1243 | memcpy (p, ptr, size); |
| 1244 | p[size] = 0; |
| 1245 | return p; |
| 1246 | } |
| 1247 | |
| 1248 | char * |
| 1249 | mstrsave (void *md, const char *ptr) |
| 1250 | { |
| 1251 | return (msavestring (md, ptr, strlen (ptr))); |
| 1252 | } |
| 1253 | |
| 1254 | void |
| 1255 | print_spaces (register int n, register struct ui_file *file) |
| 1256 | { |
| 1257 | fputs_unfiltered (n_spaces (n), file); |
| 1258 | } |
| 1259 | |
| 1260 | /* Print a host address. */ |
| 1261 | |
| 1262 | void |
| 1263 | gdb_print_host_address (void *addr, struct ui_file *stream) |
| 1264 | { |
| 1265 | |
| 1266 | /* We could use the %p conversion specifier to fprintf if we had any |
| 1267 | way of knowing whether this host supports it. But the following |
| 1268 | should work on the Alpha and on 32 bit machines. */ |
| 1269 | |
| 1270 | fprintf_filtered (stream, "0x%lx", (unsigned long) addr); |
| 1271 | } |
| 1272 | |
| 1273 | /* Ask user a y-or-n question and return 1 iff answer is yes. |
| 1274 | Takes three args which are given to printf to print the question. |
| 1275 | The first, a control string, should end in "? ". |
| 1276 | It should not say how to answer, because we do that. */ |
| 1277 | |
| 1278 | /* VARARGS */ |
| 1279 | int |
| 1280 | query (const char *ctlstr, ...) |
| 1281 | { |
| 1282 | va_list args; |
| 1283 | register int answer; |
| 1284 | register int ans2; |
| 1285 | int retval; |
| 1286 | |
| 1287 | va_start (args, ctlstr); |
| 1288 | |
| 1289 | if (query_hook) |
| 1290 | { |
| 1291 | return query_hook (ctlstr, args); |
| 1292 | } |
| 1293 | |
| 1294 | /* Automatically answer "yes" if input is not from a terminal. */ |
| 1295 | if (!input_from_terminal_p ()) |
| 1296 | return 1; |
| 1297 | |
| 1298 | while (1) |
| 1299 | { |
| 1300 | wrap_here (""); /* Flush any buffered output */ |
| 1301 | gdb_flush (gdb_stdout); |
| 1302 | |
| 1303 | if (annotation_level > 1) |
| 1304 | printf_filtered ("\n\032\032pre-query\n"); |
| 1305 | |
| 1306 | vfprintf_filtered (gdb_stdout, ctlstr, args); |
| 1307 | printf_filtered ("(y or n) "); |
| 1308 | |
| 1309 | if (annotation_level > 1) |
| 1310 | printf_filtered ("\n\032\032query\n"); |
| 1311 | |
| 1312 | wrap_here (""); |
| 1313 | gdb_flush (gdb_stdout); |
| 1314 | |
| 1315 | answer = fgetc (stdin); |
| 1316 | clearerr (stdin); /* in case of C-d */ |
| 1317 | if (answer == EOF) /* C-d */ |
| 1318 | { |
| 1319 | retval = 1; |
| 1320 | break; |
| 1321 | } |
| 1322 | /* Eat rest of input line, to EOF or newline */ |
| 1323 | if (answer != '\n') |
| 1324 | do |
| 1325 | { |
| 1326 | ans2 = fgetc (stdin); |
| 1327 | clearerr (stdin); |
| 1328 | } |
| 1329 | while (ans2 != EOF && ans2 != '\n' && ans2 != '\r'); |
| 1330 | |
| 1331 | if (answer >= 'a') |
| 1332 | answer -= 040; |
| 1333 | if (answer == 'Y') |
| 1334 | { |
| 1335 | retval = 1; |
| 1336 | break; |
| 1337 | } |
| 1338 | if (answer == 'N') |
| 1339 | { |
| 1340 | retval = 0; |
| 1341 | break; |
| 1342 | } |
| 1343 | printf_filtered ("Please answer y or n.\n"); |
| 1344 | } |
| 1345 | |
| 1346 | if (annotation_level > 1) |
| 1347 | printf_filtered ("\n\032\032post-query\n"); |
| 1348 | return retval; |
| 1349 | } |
| 1350 | \f |
| 1351 | |
| 1352 | /* Print an error message saying that we couldn't make sense of a |
| 1353 | \^mumble sequence in a string or character constant. START and END |
| 1354 | indicate a substring of some larger string that contains the |
| 1355 | erroneous backslash sequence, missing the initial backslash. */ |
| 1356 | static NORETURN int |
| 1357 | no_control_char_error (const char *start, const char *end) |
| 1358 | { |
| 1359 | int len = end - start; |
| 1360 | char *copy = alloca (end - start + 1); |
| 1361 | |
| 1362 | memcpy (copy, start, len); |
| 1363 | copy[len] = '\0'; |
| 1364 | |
| 1365 | error ("There is no control character `\\%s' in the `%s' character set.", |
| 1366 | copy, target_charset ()); |
| 1367 | } |
| 1368 | |
| 1369 | /* Parse a C escape sequence. STRING_PTR points to a variable |
| 1370 | containing a pointer to the string to parse. That pointer |
| 1371 | should point to the character after the \. That pointer |
| 1372 | is updated past the characters we use. The value of the |
| 1373 | escape sequence is returned. |
| 1374 | |
| 1375 | A negative value means the sequence \ newline was seen, |
| 1376 | which is supposed to be equivalent to nothing at all. |
| 1377 | |
| 1378 | If \ is followed by a null character, we return a negative |
| 1379 | value and leave the string pointer pointing at the null character. |
| 1380 | |
| 1381 | If \ is followed by 000, we return 0 and leave the string pointer |
| 1382 | after the zeros. A value of 0 does not mean end of string. */ |
| 1383 | |
| 1384 | int |
| 1385 | parse_escape (char **string_ptr) |
| 1386 | { |
| 1387 | int target_char; |
| 1388 | register int c = *(*string_ptr)++; |
| 1389 | if (c_parse_backslash (c, &target_char)) |
| 1390 | return target_char; |
| 1391 | else |
| 1392 | switch (c) |
| 1393 | { |
| 1394 | case '\n': |
| 1395 | return -2; |
| 1396 | case 0: |
| 1397 | (*string_ptr)--; |
| 1398 | return 0; |
| 1399 | case '^': |
| 1400 | { |
| 1401 | /* Remember where this escape sequence started, for reporting |
| 1402 | errors. */ |
| 1403 | char *sequence_start_pos = *string_ptr - 1; |
| 1404 | |
| 1405 | c = *(*string_ptr)++; |
| 1406 | |
| 1407 | if (c == '?') |
| 1408 | { |
| 1409 | /* XXXCHARSET: What is `delete' in the host character set? */ |
| 1410 | c = 0177; |
| 1411 | |
| 1412 | if (!host_char_to_target (c, &target_char)) |
| 1413 | error ("There is no character corresponding to `Delete' " |
| 1414 | "in the target character set `%s'.", host_charset ()); |
| 1415 | |
| 1416 | return target_char; |
| 1417 | } |
| 1418 | else if (c == '\\') |
| 1419 | target_char = parse_escape (string_ptr); |
| 1420 | else |
| 1421 | { |
| 1422 | if (!host_char_to_target (c, &target_char)) |
| 1423 | no_control_char_error (sequence_start_pos, *string_ptr); |
| 1424 | } |
| 1425 | |
| 1426 | /* Now target_char is something like `c', and we want to find |
| 1427 | its control-character equivalent. */ |
| 1428 | if (!target_char_to_control_char (target_char, &target_char)) |
| 1429 | no_control_char_error (sequence_start_pos, *string_ptr); |
| 1430 | |
| 1431 | return target_char; |
| 1432 | } |
| 1433 | |
| 1434 | /* XXXCHARSET: we need to use isdigit and value-of-digit |
| 1435 | methods of the host character set here. */ |
| 1436 | |
| 1437 | case '0': |
| 1438 | case '1': |
| 1439 | case '2': |
| 1440 | case '3': |
| 1441 | case '4': |
| 1442 | case '5': |
| 1443 | case '6': |
| 1444 | case '7': |
| 1445 | { |
| 1446 | register int i = c - '0'; |
| 1447 | register int count = 0; |
| 1448 | while (++count < 3) |
| 1449 | { |
| 1450 | if ((c = *(*string_ptr)++) >= '0' && c <= '7') |
| 1451 | { |
| 1452 | i *= 8; |
| 1453 | i += c - '0'; |
| 1454 | } |
| 1455 | else |
| 1456 | { |
| 1457 | (*string_ptr)--; |
| 1458 | break; |
| 1459 | } |
| 1460 | } |
| 1461 | return i; |
| 1462 | } |
| 1463 | default: |
| 1464 | if (!host_char_to_target (c, &target_char)) |
| 1465 | error |
| 1466 | ("The escape sequence `\%c' is equivalent to plain `%c', which" |
| 1467 | " has no equivalent\n" "in the `%s' character set.", c, c, |
| 1468 | target_charset ()); |
| 1469 | return target_char; |
| 1470 | } |
| 1471 | } |
| 1472 | \f |
| 1473 | /* Print the character C on STREAM as part of the contents of a literal |
| 1474 | string whose delimiter is QUOTER. Note that this routine should only |
| 1475 | be call for printing things which are independent of the language |
| 1476 | of the program being debugged. */ |
| 1477 | |
| 1478 | static void |
| 1479 | printchar (int c, void (*do_fputs) (const char *, struct ui_file *), |
| 1480 | void (*do_fprintf) (struct ui_file *, const char *, ...), |
| 1481 | struct ui_file *stream, int quoter) |
| 1482 | { |
| 1483 | |
| 1484 | c &= 0xFF; /* Avoid sign bit follies */ |
| 1485 | |
| 1486 | if (c < 0x20 || /* Low control chars */ |
| 1487 | (c >= 0x7F && c < 0xA0) || /* DEL, High controls */ |
| 1488 | (sevenbit_strings && c >= 0x80)) |
| 1489 | { /* high order bit set */ |
| 1490 | switch (c) |
| 1491 | { |
| 1492 | case '\n': |
| 1493 | do_fputs ("\\n", stream); |
| 1494 | break; |
| 1495 | case '\b': |
| 1496 | do_fputs ("\\b", stream); |
| 1497 | break; |
| 1498 | case '\t': |
| 1499 | do_fputs ("\\t", stream); |
| 1500 | break; |
| 1501 | case '\f': |
| 1502 | do_fputs ("\\f", stream); |
| 1503 | break; |
| 1504 | case '\r': |
| 1505 | do_fputs ("\\r", stream); |
| 1506 | break; |
| 1507 | case '\033': |
| 1508 | do_fputs ("\\e", stream); |
| 1509 | break; |
| 1510 | case '\007': |
| 1511 | do_fputs ("\\a", stream); |
| 1512 | break; |
| 1513 | default: |
| 1514 | do_fprintf (stream, "\\%.3o", (unsigned int) c); |
| 1515 | break; |
| 1516 | } |
| 1517 | } |
| 1518 | else |
| 1519 | { |
| 1520 | if (c == '\\' || c == quoter) |
| 1521 | do_fputs ("\\", stream); |
| 1522 | do_fprintf (stream, "%c", c); |
| 1523 | } |
| 1524 | } |
| 1525 | |
| 1526 | /* Print the character C on STREAM as part of the contents of a |
| 1527 | literal string whose delimiter is QUOTER. Note that these routines |
| 1528 | should only be call for printing things which are independent of |
| 1529 | the language of the program being debugged. */ |
| 1530 | |
| 1531 | void |
| 1532 | fputstr_filtered (const char *str, int quoter, struct ui_file *stream) |
| 1533 | { |
| 1534 | while (*str) |
| 1535 | printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter); |
| 1536 | } |
| 1537 | |
| 1538 | void |
| 1539 | fputstr_unfiltered (const char *str, int quoter, struct ui_file *stream) |
| 1540 | { |
| 1541 | while (*str) |
| 1542 | printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter); |
| 1543 | } |
| 1544 | |
| 1545 | void |
| 1546 | fputstrn_unfiltered (const char *str, int n, int quoter, |
| 1547 | struct ui_file *stream) |
| 1548 | { |
| 1549 | int i; |
| 1550 | for (i = 0; i < n; i++) |
| 1551 | printchar (str[i], fputs_unfiltered, fprintf_unfiltered, stream, quoter); |
| 1552 | } |
| 1553 | \f |
| 1554 | |
| 1555 | |
| 1556 | /* Number of lines per page or UINT_MAX if paging is disabled. */ |
| 1557 | static unsigned int lines_per_page; |
| 1558 | /* Number of chars per line or UINT_MAX if line folding is disabled. */ |
| 1559 | static unsigned int chars_per_line; |
| 1560 | /* Current count of lines printed on this page, chars on this line. */ |
| 1561 | static unsigned int lines_printed, chars_printed; |
| 1562 | |
| 1563 | /* Buffer and start column of buffered text, for doing smarter word- |
| 1564 | wrapping. When someone calls wrap_here(), we start buffering output |
| 1565 | that comes through fputs_filtered(). If we see a newline, we just |
| 1566 | spit it out and forget about the wrap_here(). If we see another |
| 1567 | wrap_here(), we spit it out and remember the newer one. If we see |
| 1568 | the end of the line, we spit out a newline, the indent, and then |
| 1569 | the buffered output. */ |
| 1570 | |
| 1571 | /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which |
| 1572 | are waiting to be output (they have already been counted in chars_printed). |
| 1573 | When wrap_buffer[0] is null, the buffer is empty. */ |
| 1574 | static char *wrap_buffer; |
| 1575 | |
| 1576 | /* Pointer in wrap_buffer to the next character to fill. */ |
| 1577 | static char *wrap_pointer; |
| 1578 | |
| 1579 | /* String to indent by if the wrap occurs. Must not be NULL if wrap_column |
| 1580 | is non-zero. */ |
| 1581 | static char *wrap_indent; |
| 1582 | |
| 1583 | /* Column number on the screen where wrap_buffer begins, or 0 if wrapping |
| 1584 | is not in effect. */ |
| 1585 | static int wrap_column; |
| 1586 | \f |
| 1587 | |
| 1588 | /* Inialize the lines and chars per page */ |
| 1589 | void |
| 1590 | init_page_info (void) |
| 1591 | { |
| 1592 | #if defined(TUI) |
| 1593 | if (!tui_get_command_dimension (&chars_per_line, &lines_per_page)) |
| 1594 | #endif |
| 1595 | { |
| 1596 | /* These defaults will be used if we are unable to get the correct |
| 1597 | values from termcap. */ |
| 1598 | #if defined(__GO32__) |
| 1599 | lines_per_page = ScreenRows (); |
| 1600 | chars_per_line = ScreenCols (); |
| 1601 | #else |
| 1602 | lines_per_page = 24; |
| 1603 | chars_per_line = 80; |
| 1604 | |
| 1605 | #if !defined (_WIN32) |
| 1606 | /* No termcap under MPW, although might be cool to do something |
| 1607 | by looking at worksheet or console window sizes. */ |
| 1608 | /* Initialize the screen height and width from termcap. */ |
| 1609 | { |
| 1610 | char *termtype = getenv ("TERM"); |
| 1611 | |
| 1612 | /* Positive means success, nonpositive means failure. */ |
| 1613 | int status; |
| 1614 | |
| 1615 | /* 2048 is large enough for all known terminals, according to the |
| 1616 | GNU termcap manual. */ |
| 1617 | char term_buffer[2048]; |
| 1618 | |
| 1619 | if (termtype) |
| 1620 | { |
| 1621 | status = tgetent (term_buffer, termtype); |
| 1622 | if (status > 0) |
| 1623 | { |
| 1624 | int val; |
| 1625 | int running_in_emacs = getenv ("EMACS") != NULL; |
| 1626 | |
| 1627 | val = tgetnum ("li"); |
| 1628 | if (val >= 0 && !running_in_emacs) |
| 1629 | lines_per_page = val; |
| 1630 | else |
| 1631 | /* The number of lines per page is not mentioned |
| 1632 | in the terminal description. This probably means |
| 1633 | that paging is not useful (e.g. emacs shell window), |
| 1634 | so disable paging. */ |
| 1635 | lines_per_page = UINT_MAX; |
| 1636 | |
| 1637 | val = tgetnum ("co"); |
| 1638 | if (val >= 0) |
| 1639 | chars_per_line = val; |
| 1640 | } |
| 1641 | } |
| 1642 | } |
| 1643 | #endif /* MPW */ |
| 1644 | |
| 1645 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) |
| 1646 | |
| 1647 | /* If there is a better way to determine the window size, use it. */ |
| 1648 | SIGWINCH_HANDLER (SIGWINCH); |
| 1649 | #endif |
| 1650 | #endif |
| 1651 | /* If the output is not a terminal, don't paginate it. */ |
| 1652 | if (!ui_file_isatty (gdb_stdout)) |
| 1653 | lines_per_page = UINT_MAX; |
| 1654 | } /* the command_line_version */ |
| 1655 | set_width (); |
| 1656 | } |
| 1657 | |
| 1658 | static void |
| 1659 | set_width (void) |
| 1660 | { |
| 1661 | if (chars_per_line == 0) |
| 1662 | init_page_info (); |
| 1663 | |
| 1664 | if (!wrap_buffer) |
| 1665 | { |
| 1666 | wrap_buffer = (char *) xmalloc (chars_per_line + 2); |
| 1667 | wrap_buffer[0] = '\0'; |
| 1668 | } |
| 1669 | else |
| 1670 | wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2); |
| 1671 | wrap_pointer = wrap_buffer; /* Start it at the beginning */ |
| 1672 | } |
| 1673 | |
| 1674 | /* ARGSUSED */ |
| 1675 | static void |
| 1676 | set_width_command (char *args, int from_tty, struct cmd_list_element *c) |
| 1677 | { |
| 1678 | set_width (); |
| 1679 | } |
| 1680 | |
| 1681 | /* Wait, so the user can read what's on the screen. Prompt the user |
| 1682 | to continue by pressing RETURN. */ |
| 1683 | |
| 1684 | static void |
| 1685 | prompt_for_continue (void) |
| 1686 | { |
| 1687 | char *ignore; |
| 1688 | char cont_prompt[120]; |
| 1689 | |
| 1690 | if (annotation_level > 1) |
| 1691 | printf_unfiltered ("\n\032\032pre-prompt-for-continue\n"); |
| 1692 | |
| 1693 | strcpy (cont_prompt, |
| 1694 | "---Type <return> to continue, or q <return> to quit---"); |
| 1695 | if (annotation_level > 1) |
| 1696 | strcat (cont_prompt, "\n\032\032prompt-for-continue\n"); |
| 1697 | |
| 1698 | /* We must do this *before* we call gdb_readline, else it will eventually |
| 1699 | call us -- thinking that we're trying to print beyond the end of the |
| 1700 | screen. */ |
| 1701 | reinitialize_more_filter (); |
| 1702 | |
| 1703 | immediate_quit++; |
| 1704 | /* On a real operating system, the user can quit with SIGINT. |
| 1705 | But not on GO32. |
| 1706 | |
| 1707 | 'q' is provided on all systems so users don't have to change habits |
| 1708 | from system to system, and because telling them what to do in |
| 1709 | the prompt is more user-friendly than expecting them to think of |
| 1710 | SIGINT. */ |
| 1711 | /* Call readline, not gdb_readline, because GO32 readline handles control-C |
| 1712 | whereas control-C to gdb_readline will cause the user to get dumped |
| 1713 | out to DOS. */ |
| 1714 | ignore = gdb_readline_wrapper (cont_prompt); |
| 1715 | |
| 1716 | if (annotation_level > 1) |
| 1717 | printf_unfiltered ("\n\032\032post-prompt-for-continue\n"); |
| 1718 | |
| 1719 | if (ignore) |
| 1720 | { |
| 1721 | char *p = ignore; |
| 1722 | while (*p == ' ' || *p == '\t') |
| 1723 | ++p; |
| 1724 | if (p[0] == 'q') |
| 1725 | { |
| 1726 | if (!event_loop_p) |
| 1727 | request_quit (SIGINT); |
| 1728 | else |
| 1729 | async_request_quit (0); |
| 1730 | } |
| 1731 | xfree (ignore); |
| 1732 | } |
| 1733 | immediate_quit--; |
| 1734 | |
| 1735 | /* Now we have to do this again, so that GDB will know that it doesn't |
| 1736 | need to save the ---Type <return>--- line at the top of the screen. */ |
| 1737 | reinitialize_more_filter (); |
| 1738 | |
| 1739 | dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */ |
| 1740 | } |
| 1741 | |
| 1742 | /* Reinitialize filter; ie. tell it to reset to original values. */ |
| 1743 | |
| 1744 | void |
| 1745 | reinitialize_more_filter (void) |
| 1746 | { |
| 1747 | lines_printed = 0; |
| 1748 | chars_printed = 0; |
| 1749 | } |
| 1750 | |
| 1751 | /* Indicate that if the next sequence of characters overflows the line, |
| 1752 | a newline should be inserted here rather than when it hits the end. |
| 1753 | If INDENT is non-null, it is a string to be printed to indent the |
| 1754 | wrapped part on the next line. INDENT must remain accessible until |
| 1755 | the next call to wrap_here() or until a newline is printed through |
| 1756 | fputs_filtered(). |
| 1757 | |
| 1758 | If the line is already overfull, we immediately print a newline and |
| 1759 | the indentation, and disable further wrapping. |
| 1760 | |
| 1761 | If we don't know the width of lines, but we know the page height, |
| 1762 | we must not wrap words, but should still keep track of newlines |
| 1763 | that were explicitly printed. |
| 1764 | |
| 1765 | INDENT should not contain tabs, as that will mess up the char count |
| 1766 | on the next line. FIXME. |
| 1767 | |
| 1768 | This routine is guaranteed to force out any output which has been |
| 1769 | squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be |
| 1770 | used to force out output from the wrap_buffer. */ |
| 1771 | |
| 1772 | void |
| 1773 | wrap_here (char *indent) |
| 1774 | { |
| 1775 | /* This should have been allocated, but be paranoid anyway. */ |
| 1776 | if (!wrap_buffer) |
| 1777 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
| 1778 | |
| 1779 | if (wrap_buffer[0]) |
| 1780 | { |
| 1781 | *wrap_pointer = '\0'; |
| 1782 | fputs_unfiltered (wrap_buffer, gdb_stdout); |
| 1783 | } |
| 1784 | wrap_pointer = wrap_buffer; |
| 1785 | wrap_buffer[0] = '\0'; |
| 1786 | if (chars_per_line == UINT_MAX) /* No line overflow checking */ |
| 1787 | { |
| 1788 | wrap_column = 0; |
| 1789 | } |
| 1790 | else if (chars_printed >= chars_per_line) |
| 1791 | { |
| 1792 | puts_filtered ("\n"); |
| 1793 | if (indent != NULL) |
| 1794 | puts_filtered (indent); |
| 1795 | wrap_column = 0; |
| 1796 | } |
| 1797 | else |
| 1798 | { |
| 1799 | wrap_column = chars_printed; |
| 1800 | if (indent == NULL) |
| 1801 | wrap_indent = ""; |
| 1802 | else |
| 1803 | wrap_indent = indent; |
| 1804 | } |
| 1805 | } |
| 1806 | |
| 1807 | /* Print input string to gdb_stdout, filtered, with wrap, |
| 1808 | arranging strings in columns of n chars. String can be |
| 1809 | right or left justified in the column. Never prints |
| 1810 | trailing spaces. String should never be longer than |
| 1811 | width. FIXME: this could be useful for the EXAMINE |
| 1812 | command, which currently doesn't tabulate very well */ |
| 1813 | |
| 1814 | void |
| 1815 | puts_filtered_tabular (char *string, int width, int right) |
| 1816 | { |
| 1817 | int spaces = 0; |
| 1818 | int stringlen; |
| 1819 | char *spacebuf; |
| 1820 | |
| 1821 | gdb_assert (chars_per_line > 0); |
| 1822 | if (chars_per_line == UINT_MAX) |
| 1823 | { |
| 1824 | fputs_filtered (string, gdb_stdout); |
| 1825 | fputs_filtered ("\n", gdb_stdout); |
| 1826 | return; |
| 1827 | } |
| 1828 | |
| 1829 | if (((chars_printed - 1) / width + 2) * width >= chars_per_line) |
| 1830 | fputs_filtered ("\n", gdb_stdout); |
| 1831 | |
| 1832 | if (width >= chars_per_line) |
| 1833 | width = chars_per_line - 1; |
| 1834 | |
| 1835 | stringlen = strlen (string); |
| 1836 | |
| 1837 | if (chars_printed > 0) |
| 1838 | spaces = width - (chars_printed - 1) % width - 1; |
| 1839 | if (right) |
| 1840 | spaces += width - stringlen; |
| 1841 | |
| 1842 | spacebuf = alloca (spaces + 1); |
| 1843 | spacebuf[spaces] = '\0'; |
| 1844 | while (spaces--) |
| 1845 | spacebuf[spaces] = ' '; |
| 1846 | |
| 1847 | fputs_filtered (spacebuf, gdb_stdout); |
| 1848 | fputs_filtered (string, gdb_stdout); |
| 1849 | } |
| 1850 | |
| 1851 | |
| 1852 | /* Ensure that whatever gets printed next, using the filtered output |
| 1853 | commands, starts at the beginning of the line. I.E. if there is |
| 1854 | any pending output for the current line, flush it and start a new |
| 1855 | line. Otherwise do nothing. */ |
| 1856 | |
| 1857 | void |
| 1858 | begin_line (void) |
| 1859 | { |
| 1860 | if (chars_printed > 0) |
| 1861 | { |
| 1862 | puts_filtered ("\n"); |
| 1863 | } |
| 1864 | } |
| 1865 | |
| 1866 | |
| 1867 | /* Like fputs but if FILTER is true, pause after every screenful. |
| 1868 | |
| 1869 | Regardless of FILTER can wrap at points other than the final |
| 1870 | character of a line. |
| 1871 | |
| 1872 | Unlike fputs, fputs_maybe_filtered does not return a value. |
| 1873 | It is OK for LINEBUFFER to be NULL, in which case just don't print |
| 1874 | anything. |
| 1875 | |
| 1876 | Note that a longjmp to top level may occur in this routine (only if |
| 1877 | FILTER is true) (since prompt_for_continue may do so) so this |
| 1878 | routine should not be called when cleanups are not in place. */ |
| 1879 | |
| 1880 | static void |
| 1881 | fputs_maybe_filtered (const char *linebuffer, struct ui_file *stream, |
| 1882 | int filter) |
| 1883 | { |
| 1884 | const char *lineptr; |
| 1885 | |
| 1886 | if (linebuffer == 0) |
| 1887 | return; |
| 1888 | |
| 1889 | /* Don't do any filtering if it is disabled. */ |
| 1890 | if ((stream != gdb_stdout) || !pagination_enabled |
| 1891 | || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX)) |
| 1892 | { |
| 1893 | fputs_unfiltered (linebuffer, stream); |
| 1894 | return; |
| 1895 | } |
| 1896 | |
| 1897 | /* Go through and output each character. Show line extension |
| 1898 | when this is necessary; prompt user for new page when this is |
| 1899 | necessary. */ |
| 1900 | |
| 1901 | lineptr = linebuffer; |
| 1902 | while (*lineptr) |
| 1903 | { |
| 1904 | /* Possible new page. */ |
| 1905 | if (filter && (lines_printed >= lines_per_page - 1)) |
| 1906 | prompt_for_continue (); |
| 1907 | |
| 1908 | while (*lineptr && *lineptr != '\n') |
| 1909 | { |
| 1910 | /* Print a single line. */ |
| 1911 | if (*lineptr == '\t') |
| 1912 | { |
| 1913 | if (wrap_column) |
| 1914 | *wrap_pointer++ = '\t'; |
| 1915 | else |
| 1916 | fputc_unfiltered ('\t', stream); |
| 1917 | /* Shifting right by 3 produces the number of tab stops |
| 1918 | we have already passed, and then adding one and |
| 1919 | shifting left 3 advances to the next tab stop. */ |
| 1920 | chars_printed = ((chars_printed >> 3) + 1) << 3; |
| 1921 | lineptr++; |
| 1922 | } |
| 1923 | else |
| 1924 | { |
| 1925 | if (wrap_column) |
| 1926 | *wrap_pointer++ = *lineptr; |
| 1927 | else |
| 1928 | fputc_unfiltered (*lineptr, stream); |
| 1929 | chars_printed++; |
| 1930 | lineptr++; |
| 1931 | } |
| 1932 | |
| 1933 | if (chars_printed >= chars_per_line) |
| 1934 | { |
| 1935 | unsigned int save_chars = chars_printed; |
| 1936 | |
| 1937 | chars_printed = 0; |
| 1938 | lines_printed++; |
| 1939 | /* If we aren't actually wrapping, don't output newline -- |
| 1940 | if chars_per_line is right, we probably just overflowed |
| 1941 | anyway; if it's wrong, let us keep going. */ |
| 1942 | if (wrap_column) |
| 1943 | fputc_unfiltered ('\n', stream); |
| 1944 | |
| 1945 | /* Possible new page. */ |
| 1946 | if (lines_printed >= lines_per_page - 1) |
| 1947 | prompt_for_continue (); |
| 1948 | |
| 1949 | /* Now output indentation and wrapped string */ |
| 1950 | if (wrap_column) |
| 1951 | { |
| 1952 | fputs_unfiltered (wrap_indent, stream); |
| 1953 | *wrap_pointer = '\0'; /* Null-terminate saved stuff */ |
| 1954 | fputs_unfiltered (wrap_buffer, stream); /* and eject it */ |
| 1955 | /* FIXME, this strlen is what prevents wrap_indent from |
| 1956 | containing tabs. However, if we recurse to print it |
| 1957 | and count its chars, we risk trouble if wrap_indent is |
| 1958 | longer than (the user settable) chars_per_line. |
| 1959 | Note also that this can set chars_printed > chars_per_line |
| 1960 | if we are printing a long string. */ |
| 1961 | chars_printed = strlen (wrap_indent) |
| 1962 | + (save_chars - wrap_column); |
| 1963 | wrap_pointer = wrap_buffer; /* Reset buffer */ |
| 1964 | wrap_buffer[0] = '\0'; |
| 1965 | wrap_column = 0; /* And disable fancy wrap */ |
| 1966 | } |
| 1967 | } |
| 1968 | } |
| 1969 | |
| 1970 | if (*lineptr == '\n') |
| 1971 | { |
| 1972 | chars_printed = 0; |
| 1973 | wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */ |
| 1974 | lines_printed++; |
| 1975 | fputc_unfiltered ('\n', stream); |
| 1976 | lineptr++; |
| 1977 | } |
| 1978 | } |
| 1979 | } |
| 1980 | |
| 1981 | void |
| 1982 | fputs_filtered (const char *linebuffer, struct ui_file *stream) |
| 1983 | { |
| 1984 | fputs_maybe_filtered (linebuffer, stream, 1); |
| 1985 | } |
| 1986 | |
| 1987 | int |
| 1988 | putchar_unfiltered (int c) |
| 1989 | { |
| 1990 | char buf = c; |
| 1991 | ui_file_write (gdb_stdout, &buf, 1); |
| 1992 | return c; |
| 1993 | } |
| 1994 | |
| 1995 | /* Write character C to gdb_stdout using GDB's paging mechanism and return C. |
| 1996 | May return nonlocally. */ |
| 1997 | |
| 1998 | int |
| 1999 | putchar_filtered (int c) |
| 2000 | { |
| 2001 | return fputc_filtered (c, gdb_stdout); |
| 2002 | } |
| 2003 | |
| 2004 | int |
| 2005 | fputc_unfiltered (int c, struct ui_file *stream) |
| 2006 | { |
| 2007 | char buf = c; |
| 2008 | ui_file_write (stream, &buf, 1); |
| 2009 | return c; |
| 2010 | } |
| 2011 | |
| 2012 | int |
| 2013 | fputc_filtered (int c, struct ui_file *stream) |
| 2014 | { |
| 2015 | char buf[2]; |
| 2016 | |
| 2017 | buf[0] = c; |
| 2018 | buf[1] = 0; |
| 2019 | fputs_filtered (buf, stream); |
| 2020 | return c; |
| 2021 | } |
| 2022 | |
| 2023 | /* puts_debug is like fputs_unfiltered, except it prints special |
| 2024 | characters in printable fashion. */ |
| 2025 | |
| 2026 | void |
| 2027 | puts_debug (char *prefix, char *string, char *suffix) |
| 2028 | { |
| 2029 | int ch; |
| 2030 | |
| 2031 | /* Print prefix and suffix after each line. */ |
| 2032 | static int new_line = 1; |
| 2033 | static int return_p = 0; |
| 2034 | static char *prev_prefix = ""; |
| 2035 | static char *prev_suffix = ""; |
| 2036 | |
| 2037 | if (*string == '\n') |
| 2038 | return_p = 0; |
| 2039 | |
| 2040 | /* If the prefix is changing, print the previous suffix, a new line, |
| 2041 | and the new prefix. */ |
| 2042 | if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line) |
| 2043 | { |
| 2044 | fputs_unfiltered (prev_suffix, gdb_stdlog); |
| 2045 | fputs_unfiltered ("\n", gdb_stdlog); |
| 2046 | fputs_unfiltered (prefix, gdb_stdlog); |
| 2047 | } |
| 2048 | |
| 2049 | /* Print prefix if we printed a newline during the previous call. */ |
| 2050 | if (new_line) |
| 2051 | { |
| 2052 | new_line = 0; |
| 2053 | fputs_unfiltered (prefix, gdb_stdlog); |
| 2054 | } |
| 2055 | |
| 2056 | prev_prefix = prefix; |
| 2057 | prev_suffix = suffix; |
| 2058 | |
| 2059 | /* Output characters in a printable format. */ |
| 2060 | while ((ch = *string++) != '\0') |
| 2061 | { |
| 2062 | switch (ch) |
| 2063 | { |
| 2064 | default: |
| 2065 | if (isprint (ch)) |
| 2066 | fputc_unfiltered (ch, gdb_stdlog); |
| 2067 | |
| 2068 | else |
| 2069 | fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff); |
| 2070 | break; |
| 2071 | |
| 2072 | case '\\': |
| 2073 | fputs_unfiltered ("\\\\", gdb_stdlog); |
| 2074 | break; |
| 2075 | case '\b': |
| 2076 | fputs_unfiltered ("\\b", gdb_stdlog); |
| 2077 | break; |
| 2078 | case '\f': |
| 2079 | fputs_unfiltered ("\\f", gdb_stdlog); |
| 2080 | break; |
| 2081 | case '\n': |
| 2082 | new_line = 1; |
| 2083 | fputs_unfiltered ("\\n", gdb_stdlog); |
| 2084 | break; |
| 2085 | case '\r': |
| 2086 | fputs_unfiltered ("\\r", gdb_stdlog); |
| 2087 | break; |
| 2088 | case '\t': |
| 2089 | fputs_unfiltered ("\\t", gdb_stdlog); |
| 2090 | break; |
| 2091 | case '\v': |
| 2092 | fputs_unfiltered ("\\v", gdb_stdlog); |
| 2093 | break; |
| 2094 | } |
| 2095 | |
| 2096 | return_p = ch == '\r'; |
| 2097 | } |
| 2098 | |
| 2099 | /* Print suffix if we printed a newline. */ |
| 2100 | if (new_line) |
| 2101 | { |
| 2102 | fputs_unfiltered (suffix, gdb_stdlog); |
| 2103 | fputs_unfiltered ("\n", gdb_stdlog); |
| 2104 | } |
| 2105 | } |
| 2106 | |
| 2107 | |
| 2108 | /* Print a variable number of ARGS using format FORMAT. If this |
| 2109 | information is going to put the amount written (since the last call |
| 2110 | to REINITIALIZE_MORE_FILTER or the last page break) over the page size, |
| 2111 | call prompt_for_continue to get the users permision to continue. |
| 2112 | |
| 2113 | Unlike fprintf, this function does not return a value. |
| 2114 | |
| 2115 | We implement three variants, vfprintf (takes a vararg list and stream), |
| 2116 | fprintf (takes a stream to write on), and printf (the usual). |
| 2117 | |
| 2118 | Note also that a longjmp to top level may occur in this routine |
| 2119 | (since prompt_for_continue may do so) so this routine should not be |
| 2120 | called when cleanups are not in place. */ |
| 2121 | |
| 2122 | static void |
| 2123 | vfprintf_maybe_filtered (struct ui_file *stream, const char *format, |
| 2124 | va_list args, int filter) |
| 2125 | { |
| 2126 | char *linebuffer; |
| 2127 | struct cleanup *old_cleanups; |
| 2128 | |
| 2129 | xvasprintf (&linebuffer, format, args); |
| 2130 | old_cleanups = make_cleanup (xfree, linebuffer); |
| 2131 | fputs_maybe_filtered (linebuffer, stream, filter); |
| 2132 | do_cleanups (old_cleanups); |
| 2133 | } |
| 2134 | |
| 2135 | |
| 2136 | void |
| 2137 | vfprintf_filtered (struct ui_file *stream, const char *format, va_list args) |
| 2138 | { |
| 2139 | vfprintf_maybe_filtered (stream, format, args, 1); |
| 2140 | } |
| 2141 | |
| 2142 | void |
| 2143 | vfprintf_unfiltered (struct ui_file *stream, const char *format, va_list args) |
| 2144 | { |
| 2145 | char *linebuffer; |
| 2146 | struct cleanup *old_cleanups; |
| 2147 | |
| 2148 | xvasprintf (&linebuffer, format, args); |
| 2149 | old_cleanups = make_cleanup (xfree, linebuffer); |
| 2150 | fputs_unfiltered (linebuffer, stream); |
| 2151 | do_cleanups (old_cleanups); |
| 2152 | } |
| 2153 | |
| 2154 | void |
| 2155 | vprintf_filtered (const char *format, va_list args) |
| 2156 | { |
| 2157 | vfprintf_maybe_filtered (gdb_stdout, format, args, 1); |
| 2158 | } |
| 2159 | |
| 2160 | void |
| 2161 | vprintf_unfiltered (const char *format, va_list args) |
| 2162 | { |
| 2163 | vfprintf_unfiltered (gdb_stdout, format, args); |
| 2164 | } |
| 2165 | |
| 2166 | void |
| 2167 | fprintf_filtered (struct ui_file *stream, const char *format, ...) |
| 2168 | { |
| 2169 | va_list args; |
| 2170 | va_start (args, format); |
| 2171 | vfprintf_filtered (stream, format, args); |
| 2172 | va_end (args); |
| 2173 | } |
| 2174 | |
| 2175 | void |
| 2176 | fprintf_unfiltered (struct ui_file *stream, const char *format, ...) |
| 2177 | { |
| 2178 | va_list args; |
| 2179 | va_start (args, format); |
| 2180 | vfprintf_unfiltered (stream, format, args); |
| 2181 | va_end (args); |
| 2182 | } |
| 2183 | |
| 2184 | /* Like fprintf_filtered, but prints its result indented. |
| 2185 | Called as fprintfi_filtered (spaces, stream, format, ...); */ |
| 2186 | |
| 2187 | void |
| 2188 | fprintfi_filtered (int spaces, struct ui_file *stream, const char *format, |
| 2189 | ...) |
| 2190 | { |
| 2191 | va_list args; |
| 2192 | va_start (args, format); |
| 2193 | print_spaces_filtered (spaces, stream); |
| 2194 | |
| 2195 | vfprintf_filtered (stream, format, args); |
| 2196 | va_end (args); |
| 2197 | } |
| 2198 | |
| 2199 | |
| 2200 | void |
| 2201 | printf_filtered (const char *format, ...) |
| 2202 | { |
| 2203 | va_list args; |
| 2204 | va_start (args, format); |
| 2205 | vfprintf_filtered (gdb_stdout, format, args); |
| 2206 | va_end (args); |
| 2207 | } |
| 2208 | |
| 2209 | |
| 2210 | void |
| 2211 | printf_unfiltered (const char *format, ...) |
| 2212 | { |
| 2213 | va_list args; |
| 2214 | va_start (args, format); |
| 2215 | vfprintf_unfiltered (gdb_stdout, format, args); |
| 2216 | va_end (args); |
| 2217 | } |
| 2218 | |
| 2219 | /* Like printf_filtered, but prints it's result indented. |
| 2220 | Called as printfi_filtered (spaces, format, ...); */ |
| 2221 | |
| 2222 | void |
| 2223 | printfi_filtered (int spaces, const char *format, ...) |
| 2224 | { |
| 2225 | va_list args; |
| 2226 | va_start (args, format); |
| 2227 | print_spaces_filtered (spaces, gdb_stdout); |
| 2228 | vfprintf_filtered (gdb_stdout, format, args); |
| 2229 | va_end (args); |
| 2230 | } |
| 2231 | |
| 2232 | /* Easy -- but watch out! |
| 2233 | |
| 2234 | This routine is *not* a replacement for puts()! puts() appends a newline. |
| 2235 | This one doesn't, and had better not! */ |
| 2236 | |
| 2237 | void |
| 2238 | puts_filtered (const char *string) |
| 2239 | { |
| 2240 | fputs_filtered (string, gdb_stdout); |
| 2241 | } |
| 2242 | |
| 2243 | void |
| 2244 | puts_unfiltered (const char *string) |
| 2245 | { |
| 2246 | fputs_unfiltered (string, gdb_stdout); |
| 2247 | } |
| 2248 | |
| 2249 | /* Return a pointer to N spaces and a null. The pointer is good |
| 2250 | until the next call to here. */ |
| 2251 | char * |
| 2252 | n_spaces (int n) |
| 2253 | { |
| 2254 | char *t; |
| 2255 | static char *spaces = 0; |
| 2256 | static int max_spaces = -1; |
| 2257 | |
| 2258 | if (n > max_spaces) |
| 2259 | { |
| 2260 | if (spaces) |
| 2261 | xfree (spaces); |
| 2262 | spaces = (char *) xmalloc (n + 1); |
| 2263 | for (t = spaces + n; t != spaces;) |
| 2264 | *--t = ' '; |
| 2265 | spaces[n] = '\0'; |
| 2266 | max_spaces = n; |
| 2267 | } |
| 2268 | |
| 2269 | return spaces + max_spaces - n; |
| 2270 | } |
| 2271 | |
| 2272 | /* Print N spaces. */ |
| 2273 | void |
| 2274 | print_spaces_filtered (int n, struct ui_file *stream) |
| 2275 | { |
| 2276 | fputs_filtered (n_spaces (n), stream); |
| 2277 | } |
| 2278 | \f |
| 2279 | /* C++/ObjC demangler stuff. */ |
| 2280 | |
| 2281 | /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language |
| 2282 | LANG, using demangling args ARG_MODE, and print it filtered to STREAM. |
| 2283 | If the name is not mangled, or the language for the name is unknown, or |
| 2284 | demangling is off, the name is printed in its "raw" form. */ |
| 2285 | |
| 2286 | void |
| 2287 | fprintf_symbol_filtered (struct ui_file *stream, char *name, |
| 2288 | enum language lang, int arg_mode) |
| 2289 | { |
| 2290 | char *demangled; |
| 2291 | |
| 2292 | if (name != NULL) |
| 2293 | { |
| 2294 | /* If user wants to see raw output, no problem. */ |
| 2295 | if (!demangle) |
| 2296 | { |
| 2297 | fputs_filtered (name, stream); |
| 2298 | } |
| 2299 | else |
| 2300 | { |
| 2301 | switch (lang) |
| 2302 | { |
| 2303 | case language_cplus: |
| 2304 | demangled = cplus_demangle (name, arg_mode); |
| 2305 | break; |
| 2306 | case language_java: |
| 2307 | demangled = cplus_demangle (name, arg_mode | DMGL_JAVA); |
| 2308 | break; |
| 2309 | case language_objc: |
| 2310 | /* Commented out until ObjC handling is enabled. */ |
| 2311 | /*demangled = objc_demangle (name); */ |
| 2312 | /*break; */ |
| 2313 | default: |
| 2314 | demangled = NULL; |
| 2315 | break; |
| 2316 | } |
| 2317 | fputs_filtered (demangled ? demangled : name, stream); |
| 2318 | if (demangled != NULL) |
| 2319 | { |
| 2320 | xfree (demangled); |
| 2321 | } |
| 2322 | } |
| 2323 | } |
| 2324 | } |
| 2325 | |
| 2326 | /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any |
| 2327 | differences in whitespace. Returns 0 if they match, non-zero if they |
| 2328 | don't (slightly different than strcmp()'s range of return values). |
| 2329 | |
| 2330 | As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO". |
| 2331 | This "feature" is useful when searching for matching C++ function names |
| 2332 | (such as if the user types 'break FOO', where FOO is a mangled C++ |
| 2333 | function). */ |
| 2334 | |
| 2335 | int |
| 2336 | strcmp_iw (const char *string1, const char *string2) |
| 2337 | { |
| 2338 | while ((*string1 != '\0') && (*string2 != '\0')) |
| 2339 | { |
| 2340 | while (isspace (*string1)) |
| 2341 | { |
| 2342 | string1++; |
| 2343 | } |
| 2344 | while (isspace (*string2)) |
| 2345 | { |
| 2346 | string2++; |
| 2347 | } |
| 2348 | if (*string1 != *string2) |
| 2349 | { |
| 2350 | break; |
| 2351 | } |
| 2352 | if (*string1 != '\0') |
| 2353 | { |
| 2354 | string1++; |
| 2355 | string2++; |
| 2356 | } |
| 2357 | } |
| 2358 | return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0'); |
| 2359 | } |
| 2360 | \f |
| 2361 | |
| 2362 | /* |
| 2363 | ** subset_compare() |
| 2364 | ** Answer whether string_to_compare is a full or partial match to |
| 2365 | ** template_string. The partial match must be in sequence starting |
| 2366 | ** at index 0. |
| 2367 | */ |
| 2368 | int |
| 2369 | subset_compare (char *string_to_compare, char *template_string) |
| 2370 | { |
| 2371 | int match; |
| 2372 | if (template_string != (char *) NULL && string_to_compare != (char *) NULL |
| 2373 | && strlen (string_to_compare) <= strlen (template_string)) |
| 2374 | match = |
| 2375 | (strncmp |
| 2376 | (template_string, string_to_compare, strlen (string_to_compare)) == 0); |
| 2377 | else |
| 2378 | match = 0; |
| 2379 | return match; |
| 2380 | } |
| 2381 | |
| 2382 | |
| 2383 | static void pagination_on_command (char *arg, int from_tty); |
| 2384 | static void |
| 2385 | pagination_on_command (char *arg, int from_tty) |
| 2386 | { |
| 2387 | pagination_enabled = 1; |
| 2388 | } |
| 2389 | |
| 2390 | static void pagination_on_command (char *arg, int from_tty); |
| 2391 | static void |
| 2392 | pagination_off_command (char *arg, int from_tty) |
| 2393 | { |
| 2394 | pagination_enabled = 0; |
| 2395 | } |
| 2396 | \f |
| 2397 | |
| 2398 | void |
| 2399 | initialize_utils (void) |
| 2400 | { |
| 2401 | struct cmd_list_element *c; |
| 2402 | |
| 2403 | c = add_set_cmd ("width", class_support, var_uinteger, |
| 2404 | (char *) &chars_per_line, |
| 2405 | "Set number of characters gdb thinks are in a line.", |
| 2406 | &setlist); |
| 2407 | add_show_from_set (c, &showlist); |
| 2408 | set_cmd_sfunc (c, set_width_command); |
| 2409 | |
| 2410 | add_show_from_set |
| 2411 | (add_set_cmd ("height", class_support, |
| 2412 | var_uinteger, (char *) &lines_per_page, |
| 2413 | "Set number of lines gdb thinks are in a page.", &setlist), |
| 2414 | &showlist); |
| 2415 | |
| 2416 | init_page_info (); |
| 2417 | |
| 2418 | /* If the output is not a terminal, don't paginate it. */ |
| 2419 | if (!ui_file_isatty (gdb_stdout)) |
| 2420 | lines_per_page = UINT_MAX; |
| 2421 | |
| 2422 | set_width_command ((char *) NULL, 0, c); |
| 2423 | |
| 2424 | add_show_from_set |
| 2425 | (add_set_cmd ("demangle", class_support, var_boolean, |
| 2426 | (char *) &demangle, |
| 2427 | "Set demangling of encoded C++/ObjC names when displaying symbols.", |
| 2428 | &setprintlist), &showprintlist); |
| 2429 | |
| 2430 | add_show_from_set |
| 2431 | (add_set_cmd ("pagination", class_support, |
| 2432 | var_boolean, (char *) &pagination_enabled, |
| 2433 | "Set state of pagination.", &setlist), &showlist); |
| 2434 | |
| 2435 | if (xdb_commands) |
| 2436 | { |
| 2437 | add_com ("am", class_support, pagination_on_command, |
| 2438 | "Enable pagination"); |
| 2439 | add_com ("sm", class_support, pagination_off_command, |
| 2440 | "Disable pagination"); |
| 2441 | } |
| 2442 | |
| 2443 | add_show_from_set |
| 2444 | (add_set_cmd ("sevenbit-strings", class_support, var_boolean, |
| 2445 | (char *) &sevenbit_strings, |
| 2446 | "Set printing of 8-bit characters in strings as \\nnn.", |
| 2447 | &setprintlist), &showprintlist); |
| 2448 | |
| 2449 | add_show_from_set |
| 2450 | (add_set_cmd ("asm-demangle", class_support, var_boolean, |
| 2451 | (char *) &asm_demangle, |
| 2452 | "Set demangling of C++/ObjC names in disassembly listings.", |
| 2453 | &setprintlist), &showprintlist); |
| 2454 | } |
| 2455 | |
| 2456 | /* Machine specific function to handle SIGWINCH signal. */ |
| 2457 | |
| 2458 | #ifdef SIGWINCH_HANDLER_BODY |
| 2459 | SIGWINCH_HANDLER_BODY |
| 2460 | #endif |
| 2461 | /* print routines to handle variable size regs, etc. */ |
| 2462 | /* temporary storage using circular buffer */ |
| 2463 | #define NUMCELLS 16 |
| 2464 | #define CELLSIZE 32 |
| 2465 | static char * |
| 2466 | get_cell (void) |
| 2467 | { |
| 2468 | static char buf[NUMCELLS][CELLSIZE]; |
| 2469 | static int cell = 0; |
| 2470 | if (++cell >= NUMCELLS) |
| 2471 | cell = 0; |
| 2472 | return buf[cell]; |
| 2473 | } |
| 2474 | |
| 2475 | int |
| 2476 | strlen_paddr (void) |
| 2477 | { |
| 2478 | return (TARGET_ADDR_BIT / 8 * 2); |
| 2479 | } |
| 2480 | |
| 2481 | char * |
| 2482 | paddr (CORE_ADDR addr) |
| 2483 | { |
| 2484 | return phex (addr, TARGET_ADDR_BIT / 8); |
| 2485 | } |
| 2486 | |
| 2487 | char * |
| 2488 | paddr_nz (CORE_ADDR addr) |
| 2489 | { |
| 2490 | return phex_nz (addr, TARGET_ADDR_BIT / 8); |
| 2491 | } |
| 2492 | |
| 2493 | static void |
| 2494 | decimal2str (char *paddr_str, char *sign, ULONGEST addr) |
| 2495 | { |
| 2496 | /* steal code from valprint.c:print_decimal(). Should this worry |
| 2497 | about the real size of addr as the above does? */ |
| 2498 | unsigned long temp[3]; |
| 2499 | int i = 0; |
| 2500 | do |
| 2501 | { |
| 2502 | temp[i] = addr % (1000 * 1000 * 1000); |
| 2503 | addr /= (1000 * 1000 * 1000); |
| 2504 | i++; |
| 2505 | } |
| 2506 | while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0]))); |
| 2507 | switch (i) |
| 2508 | { |
| 2509 | case 1: |
| 2510 | sprintf (paddr_str, "%s%lu", sign, temp[0]); |
| 2511 | break; |
| 2512 | case 2: |
| 2513 | sprintf (paddr_str, "%s%lu%09lu", sign, temp[1], temp[0]); |
| 2514 | break; |
| 2515 | case 3: |
| 2516 | sprintf (paddr_str, "%s%lu%09lu%09lu", sign, temp[2], temp[1], temp[0]); |
| 2517 | break; |
| 2518 | default: |
| 2519 | internal_error (__FILE__, __LINE__, |
| 2520 | "failed internal consistency check"); |
| 2521 | } |
| 2522 | } |
| 2523 | |
| 2524 | char * |
| 2525 | paddr_u (CORE_ADDR addr) |
| 2526 | { |
| 2527 | char *paddr_str = get_cell (); |
| 2528 | decimal2str (paddr_str, "", addr); |
| 2529 | return paddr_str; |
| 2530 | } |
| 2531 | |
| 2532 | char * |
| 2533 | paddr_d (LONGEST addr) |
| 2534 | { |
| 2535 | char *paddr_str = get_cell (); |
| 2536 | if (addr < 0) |
| 2537 | decimal2str (paddr_str, "-", -addr); |
| 2538 | else |
| 2539 | decimal2str (paddr_str, "", addr); |
| 2540 | return paddr_str; |
| 2541 | } |
| 2542 | |
| 2543 | /* eliminate warning from compiler on 32-bit systems */ |
| 2544 | static int thirty_two = 32; |
| 2545 | |
| 2546 | char * |
| 2547 | phex (ULONGEST l, int sizeof_l) |
| 2548 | { |
| 2549 | char *str; |
| 2550 | switch (sizeof_l) |
| 2551 | { |
| 2552 | case 8: |
| 2553 | str = get_cell (); |
| 2554 | sprintf (str, "%08lx%08lx", |
| 2555 | (unsigned long) (l >> thirty_two), |
| 2556 | (unsigned long) (l & 0xffffffff)); |
| 2557 | break; |
| 2558 | case 4: |
| 2559 | str = get_cell (); |
| 2560 | sprintf (str, "%08lx", (unsigned long) l); |
| 2561 | break; |
| 2562 | case 2: |
| 2563 | str = get_cell (); |
| 2564 | sprintf (str, "%04x", (unsigned short) (l & 0xffff)); |
| 2565 | break; |
| 2566 | default: |
| 2567 | str = phex (l, sizeof (l)); |
| 2568 | break; |
| 2569 | } |
| 2570 | return str; |
| 2571 | } |
| 2572 | |
| 2573 | char * |
| 2574 | phex_nz (ULONGEST l, int sizeof_l) |
| 2575 | { |
| 2576 | char *str; |
| 2577 | switch (sizeof_l) |
| 2578 | { |
| 2579 | case 8: |
| 2580 | { |
| 2581 | unsigned long high = (unsigned long) (l >> thirty_two); |
| 2582 | str = get_cell (); |
| 2583 | if (high == 0) |
| 2584 | sprintf (str, "%lx", (unsigned long) (l & 0xffffffff)); |
| 2585 | else |
| 2586 | sprintf (str, "%lx%08lx", high, (unsigned long) (l & 0xffffffff)); |
| 2587 | break; |
| 2588 | } |
| 2589 | case 4: |
| 2590 | str = get_cell (); |
| 2591 | sprintf (str, "%lx", (unsigned long) l); |
| 2592 | break; |
| 2593 | case 2: |
| 2594 | str = get_cell (); |
| 2595 | sprintf (str, "%x", (unsigned short) (l & 0xffff)); |
| 2596 | break; |
| 2597 | default: |
| 2598 | str = phex_nz (l, sizeof (l)); |
| 2599 | break; |
| 2600 | } |
| 2601 | return str; |
| 2602 | } |
| 2603 | |
| 2604 | |
| 2605 | /* Convert a CORE_ADDR into a string. */ |
| 2606 | const char * |
| 2607 | core_addr_to_string (const CORE_ADDR addr) |
| 2608 | { |
| 2609 | char *str = get_cell (); |
| 2610 | strcpy (str, "0x"); |
| 2611 | strcat (str, phex (addr, sizeof (addr))); |
| 2612 | return str; |
| 2613 | } |
| 2614 | |
| 2615 | const char * |
| 2616 | core_addr_to_string_nz (const CORE_ADDR addr) |
| 2617 | { |
| 2618 | char *str = get_cell (); |
| 2619 | strcpy (str, "0x"); |
| 2620 | strcat (str, phex_nz (addr, sizeof (addr))); |
| 2621 | return str; |
| 2622 | } |
| 2623 | |
| 2624 | /* Convert a string back into a CORE_ADDR. */ |
| 2625 | CORE_ADDR |
| 2626 | string_to_core_addr (const char *my_string) |
| 2627 | { |
| 2628 | CORE_ADDR addr = 0; |
| 2629 | if (my_string[0] == '0' && tolower (my_string[1]) == 'x') |
| 2630 | { |
| 2631 | /* Assume that it is in decimal. */ |
| 2632 | int i; |
| 2633 | for (i = 2; my_string[i] != '\0'; i++) |
| 2634 | { |
| 2635 | if (isdigit (my_string[i])) |
| 2636 | addr = (my_string[i] - '0') + (addr * 16); |
| 2637 | else if (isxdigit (my_string[i])) |
| 2638 | addr = (tolower (my_string[i]) - 'a' + 0xa) + (addr * 16); |
| 2639 | else |
| 2640 | internal_error (__FILE__, __LINE__, "invalid hex"); |
| 2641 | } |
| 2642 | } |
| 2643 | else |
| 2644 | { |
| 2645 | /* Assume that it is in decimal. */ |
| 2646 | int i; |
| 2647 | for (i = 0; my_string[i] != '\0'; i++) |
| 2648 | { |
| 2649 | if (isdigit (my_string[i])) |
| 2650 | addr = (my_string[i] - '0') + (addr * 10); |
| 2651 | else |
| 2652 | internal_error (__FILE__, __LINE__, "invalid decimal"); |
| 2653 | } |
| 2654 | } |
| 2655 | return addr; |
| 2656 | } |
| 2657 | |
| 2658 | char * |
| 2659 | gdb_realpath (const char *filename) |
| 2660 | { |
| 2661 | /* Method 1: The system has a compile time upper bound on a filename |
| 2662 | path. Use that and realpath() to canonicalize the name. This is |
| 2663 | the most common case. Note that, if there isn't a compile time |
| 2664 | upper bound, you want to avoid realpath() at all costs. */ |
| 2665 | #if defined(HAVE_REALPATH) |
| 2666 | { |
| 2667 | # if defined (PATH_MAX) |
| 2668 | char buf[PATH_MAX]; |
| 2669 | # define USE_REALPATH |
| 2670 | # elif defined (MAXPATHLEN) |
| 2671 | char buf[MAXPATHLEN]; |
| 2672 | # define USE_REALPATH |
| 2673 | # endif |
| 2674 | # if defined (USE_REALPATH) |
| 2675 | const char *rp = realpath (filename, buf); |
| 2676 | if (rp == NULL) |
| 2677 | rp = filename; |
| 2678 | return xstrdup (rp); |
| 2679 | } |
| 2680 | # endif |
| 2681 | #endif /* HAVE_REALPATH */ |
| 2682 | |
| 2683 | /* Method 2: The host system (i.e., GNU) has the function |
| 2684 | canonicalize_file_name() which malloc's a chunk of memory and |
| 2685 | returns that, use that. */ |
| 2686 | #if defined(HAVE_CANONICALIZE_FILE_NAME) |
| 2687 | { |
| 2688 | char *rp = canonicalize_file_name (filename); |
| 2689 | if (rp == NULL) |
| 2690 | return xstrdup (filename); |
| 2691 | else |
| 2692 | return rp; |
| 2693 | } |
| 2694 | #endif |
| 2695 | |
| 2696 | /* FIXME: cagney/2002-11-13: |
| 2697 | |
| 2698 | Method 2a: Use realpath() with a NULL buffer. Some systems, due |
| 2699 | to the problems described in in method 3, have modified their |
| 2700 | realpath() implementation so that it will allocate a buffer when |
| 2701 | NULL is passed in. Before this can be used, though, some sort of |
| 2702 | configure time test would need to be added. Otherwize the code |
| 2703 | will likely core dump. */ |
| 2704 | |
| 2705 | /* Method 3: Now we're getting desperate! The system doesn't have a |
| 2706 | compile time buffer size and no alternative function. Query the |
| 2707 | OS, using pathconf(), for the buffer limit. Care is needed |
| 2708 | though, some systems do not limit PATH_MAX (return -1 for |
| 2709 | pathconf()) making it impossible to pass a correctly sized buffer |
| 2710 | to realpath() (it could always overflow). On those systems, we |
| 2711 | skip this. */ |
| 2712 | #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA) |
| 2713 | { |
| 2714 | /* Find out the max path size. */ |
| 2715 | long path_max = pathconf ("/", _PC_PATH_MAX); |
| 2716 | if (path_max > 0) |
| 2717 | { |
| 2718 | /* PATH_MAX is bounded. */ |
| 2719 | char *buf = alloca (path_max); |
| 2720 | char *rp = realpath (filename, buf); |
| 2721 | return xstrdup (rp ? rp : filename); |
| 2722 | } |
| 2723 | } |
| 2724 | #endif |
| 2725 | |
| 2726 | /* This system is a lost cause, just dup the buffer. */ |
| 2727 | return xstrdup (filename); |
| 2728 | } |
| 2729 | |
| 2730 | /* Return a copy of FILENAME, with its directory prefix canonicalized |
| 2731 | by gdb_realpath. */ |
| 2732 | |
| 2733 | char * |
| 2734 | xfullpath (const char *filename) |
| 2735 | { |
| 2736 | const char *base_name = lbasename (filename); |
| 2737 | char *dir_name; |
| 2738 | char *real_path; |
| 2739 | char *result; |
| 2740 | |
| 2741 | /* Extract the basename of filename, and return immediately |
| 2742 | a copy of filename if it does not contain any directory prefix. */ |
| 2743 | if (base_name == filename) |
| 2744 | return xstrdup (filename); |
| 2745 | |
| 2746 | dir_name = alloca ((size_t) (base_name - filename + 2)); |
| 2747 | /* Allocate enough space to store the dir_name + plus one extra |
| 2748 | character sometimes needed under Windows (see below), and |
| 2749 | then the closing \000 character */ |
| 2750 | strncpy (dir_name, filename, base_name - filename); |
| 2751 | dir_name[base_name - filename] = '\000'; |
| 2752 | |
| 2753 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
| 2754 | /* We need to be careful when filename is of the form 'd:foo', which |
| 2755 | is equivalent of d:./foo, which is totally different from d:/foo. */ |
| 2756 | if (strlen (dir_name) == 2 && isalpha (dir_name[0]) && dir_name[1] == ':') |
| 2757 | { |
| 2758 | dir_name[2] = '.'; |
| 2759 | dir_name[3] = '\000'; |
| 2760 | } |
| 2761 | #endif |
| 2762 | |
| 2763 | /* Canonicalize the directory prefix, and build the resulting |
| 2764 | filename. If the dirname realpath already contains an ending |
| 2765 | directory separator, avoid doubling it. */ |
| 2766 | real_path = gdb_realpath (dir_name); |
| 2767 | if (IS_DIR_SEPARATOR (real_path[strlen (real_path) - 1])) |
| 2768 | result = concat (real_path, base_name, NULL); |
| 2769 | else |
| 2770 | result = concat (real_path, SLASH_STRING, base_name, NULL); |
| 2771 | |
| 2772 | xfree (real_path); |
| 2773 | return result; |
| 2774 | } |
| 2775 | |
| 2776 | |
| 2777 | /* This is the 32-bit CRC function used by the GNU separate debug |
| 2778 | facility. An executable may contain a section named |
| 2779 | .gnu_debuglink, which holds the name of a separate executable file |
| 2780 | containing its debug info, and a checksum of that file's contents, |
| 2781 | computed using this function. */ |
| 2782 | unsigned long |
| 2783 | gnu_debuglink_crc32 (unsigned long crc, unsigned char *buf, size_t len) |
| 2784 | { |
| 2785 | static const unsigned long crc32_table[256] = { |
| 2786 | 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, |
| 2787 | 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, |
| 2788 | 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, |
| 2789 | 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, |
| 2790 | 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, |
| 2791 | 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, |
| 2792 | 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, |
| 2793 | 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, |
| 2794 | 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, |
| 2795 | 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, |
| 2796 | 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, |
| 2797 | 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, |
| 2798 | 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, |
| 2799 | 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, |
| 2800 | 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, |
| 2801 | 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, |
| 2802 | 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, |
| 2803 | 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, |
| 2804 | 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, |
| 2805 | 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, |
| 2806 | 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, |
| 2807 | 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, |
| 2808 | 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, |
| 2809 | 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, |
| 2810 | 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, |
| 2811 | 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, |
| 2812 | 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, |
| 2813 | 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, |
| 2814 | 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, |
| 2815 | 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, |
| 2816 | 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, |
| 2817 | 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, |
| 2818 | 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, |
| 2819 | 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, |
| 2820 | 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, |
| 2821 | 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, |
| 2822 | 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, |
| 2823 | 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, |
| 2824 | 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, |
| 2825 | 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, |
| 2826 | 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, |
| 2827 | 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, |
| 2828 | 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, |
| 2829 | 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, |
| 2830 | 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, |
| 2831 | 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, |
| 2832 | 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, |
| 2833 | 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, |
| 2834 | 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, |
| 2835 | 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, |
| 2836 | 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, |
| 2837 | 0x2d02ef8d |
| 2838 | }; |
| 2839 | unsigned char *end; |
| 2840 | |
| 2841 | crc = ~crc & 0xffffffff; |
| 2842 | for (end = buf + len; buf < end; ++buf) |
| 2843 | crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8); |
| 2844 | return ~crc & 0xffffffff;; |
| 2845 | } |