| 1 | /* General utility routines for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
| 4 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
| 5 | 2009, 2010, 2011 Free Software Foundation, Inc. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "gdb_assert.h" |
| 24 | #include <ctype.h> |
| 25 | #include "gdb_string.h" |
| 26 | #include "event-top.h" |
| 27 | #include "exceptions.h" |
| 28 | #include "gdbthread.h" |
| 29 | #ifdef HAVE_SYS_RESOURCE_H |
| 30 | #include <sys/resource.h> |
| 31 | #endif /* HAVE_SYS_RESOURCE_H */ |
| 32 | |
| 33 | #ifdef TUI |
| 34 | #include "tui/tui.h" /* For tui_get_command_dimension. */ |
| 35 | #endif |
| 36 | |
| 37 | #ifdef __GO32__ |
| 38 | #include <pc.h> |
| 39 | #endif |
| 40 | |
| 41 | /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */ |
| 42 | #ifdef reg |
| 43 | #undef reg |
| 44 | #endif |
| 45 | |
| 46 | #include <signal.h> |
| 47 | #include "gdbcmd.h" |
| 48 | #include "serial.h" |
| 49 | #include "bfd.h" |
| 50 | #include "target.h" |
| 51 | #include "demangle.h" |
| 52 | #include "expression.h" |
| 53 | #include "language.h" |
| 54 | #include "charset.h" |
| 55 | #include "annotate.h" |
| 56 | #include "filenames.h" |
| 57 | #include "symfile.h" |
| 58 | #include "gdb_obstack.h" |
| 59 | #include "gdbcore.h" |
| 60 | #include "top.h" |
| 61 | #include "main.h" |
| 62 | |
| 63 | #include "inferior.h" /* for signed_pointer_to_address */ |
| 64 | |
| 65 | #include <sys/param.h> /* For MAXPATHLEN */ |
| 66 | |
| 67 | #include "gdb_curses.h" |
| 68 | |
| 69 | #include "readline/readline.h" |
| 70 | |
| 71 | #include <sys/time.h> |
| 72 | #include <time.h> |
| 73 | |
| 74 | #include "gdb_usleep.h" |
| 75 | #include "interps.h" |
| 76 | #include "gdb_regex.h" |
| 77 | |
| 78 | #if !HAVE_DECL_MALLOC |
| 79 | extern PTR malloc (); /* ARI: PTR */ |
| 80 | #endif |
| 81 | #if !HAVE_DECL_REALLOC |
| 82 | extern PTR realloc (); /* ARI: PTR */ |
| 83 | #endif |
| 84 | #if !HAVE_DECL_FREE |
| 85 | extern void free (); |
| 86 | #endif |
| 87 | |
| 88 | /* readline defines this. */ |
| 89 | #undef savestring |
| 90 | |
| 91 | void (*deprecated_error_begin_hook) (void); |
| 92 | |
| 93 | /* Prototypes for local functions */ |
| 94 | |
| 95 | static void vfprintf_maybe_filtered (struct ui_file *, const char *, |
| 96 | va_list, int) ATTRIBUTE_PRINTF (2, 0); |
| 97 | |
| 98 | static void fputs_maybe_filtered (const char *, struct ui_file *, int); |
| 99 | |
| 100 | static void do_my_cleanups (struct cleanup **, struct cleanup *); |
| 101 | |
| 102 | static void prompt_for_continue (void); |
| 103 | |
| 104 | static void set_screen_size (void); |
| 105 | static void set_width (void); |
| 106 | |
| 107 | /* A flag indicating whether to timestamp debugging messages. */ |
| 108 | |
| 109 | static int debug_timestamp = 0; |
| 110 | |
| 111 | /* Chain of cleanup actions established with make_cleanup, |
| 112 | to be executed if an error happens. */ |
| 113 | |
| 114 | static struct cleanup *cleanup_chain; /* cleaned up after a failed command */ |
| 115 | static struct cleanup *final_cleanup_chain; /* cleaned up when gdb exits */ |
| 116 | |
| 117 | /* Nonzero if we have job control. */ |
| 118 | |
| 119 | int job_control; |
| 120 | |
| 121 | /* Nonzero means a quit has been requested. */ |
| 122 | |
| 123 | int quit_flag; |
| 124 | |
| 125 | /* Nonzero means quit immediately if Control-C is typed now, rather |
| 126 | than waiting until QUIT is executed. Be careful in setting this; |
| 127 | code which executes with immediate_quit set has to be very careful |
| 128 | about being able to deal with being interrupted at any time. It is |
| 129 | almost always better to use QUIT; the only exception I can think of |
| 130 | is being able to quit out of a system call (using EINTR loses if |
| 131 | the SIGINT happens between the previous QUIT and the system call). |
| 132 | To immediately quit in the case in which a SIGINT happens between |
| 133 | the previous QUIT and setting immediate_quit (desirable anytime we |
| 134 | expect to block), call QUIT after setting immediate_quit. */ |
| 135 | |
| 136 | int immediate_quit; |
| 137 | |
| 138 | /* Nonzero means that encoded C++/ObjC names should be printed out in their |
| 139 | C++/ObjC form rather than raw. */ |
| 140 | |
| 141 | int demangle = 1; |
| 142 | static void |
| 143 | show_demangle (struct ui_file *file, int from_tty, |
| 144 | struct cmd_list_element *c, const char *value) |
| 145 | { |
| 146 | fprintf_filtered (file, |
| 147 | _("Demangling of encoded C++/ObjC names " |
| 148 | "when displaying symbols is %s.\n"), |
| 149 | value); |
| 150 | } |
| 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 | static void |
| 158 | show_asm_demangle (struct ui_file *file, int from_tty, |
| 159 | struct cmd_list_element *c, const char *value) |
| 160 | { |
| 161 | fprintf_filtered (file, |
| 162 | _("Demangling of C++/ObjC names in " |
| 163 | "disassembly listings is %s.\n"), |
| 164 | value); |
| 165 | } |
| 166 | |
| 167 | /* Nonzero means that strings with character values >0x7F should be printed |
| 168 | as octal escapes. Zero means just print the value (e.g. it's an |
| 169 | international character, and the terminal or window can cope.) */ |
| 170 | |
| 171 | int sevenbit_strings = 0; |
| 172 | static void |
| 173 | show_sevenbit_strings (struct ui_file *file, int from_tty, |
| 174 | struct cmd_list_element *c, const char *value) |
| 175 | { |
| 176 | fprintf_filtered (file, _("Printing of 8-bit characters " |
| 177 | "in strings as \\nnn is %s.\n"), |
| 178 | value); |
| 179 | } |
| 180 | |
| 181 | /* String to be printed before error messages, if any. */ |
| 182 | |
| 183 | char *error_pre_print; |
| 184 | |
| 185 | /* String to be printed before quit messages, if any. */ |
| 186 | |
| 187 | char *quit_pre_print; |
| 188 | |
| 189 | /* String to be printed before warning messages, if any. */ |
| 190 | |
| 191 | char *warning_pre_print = "\nwarning: "; |
| 192 | |
| 193 | int pagination_enabled = 1; |
| 194 | static void |
| 195 | show_pagination_enabled (struct ui_file *file, int from_tty, |
| 196 | struct cmd_list_element *c, const char *value) |
| 197 | { |
| 198 | fprintf_filtered (file, _("State of pagination is %s.\n"), value); |
| 199 | } |
| 200 | |
| 201 | \f |
| 202 | |
| 203 | /* Add a new cleanup to the cleanup_chain, |
| 204 | and return the previous chain pointer |
| 205 | to be passed later to do_cleanups or discard_cleanups. |
| 206 | Args are FUNCTION to clean up with, and ARG to pass to it. */ |
| 207 | |
| 208 | struct cleanup * |
| 209 | make_cleanup (make_cleanup_ftype *function, void *arg) |
| 210 | { |
| 211 | return make_my_cleanup (&cleanup_chain, function, arg); |
| 212 | } |
| 213 | |
| 214 | struct cleanup * |
| 215 | make_cleanup_dtor (make_cleanup_ftype *function, void *arg, |
| 216 | void (*dtor) (void *)) |
| 217 | { |
| 218 | return make_my_cleanup2 (&cleanup_chain, |
| 219 | function, arg, dtor); |
| 220 | } |
| 221 | |
| 222 | struct cleanup * |
| 223 | make_final_cleanup (make_cleanup_ftype *function, void *arg) |
| 224 | { |
| 225 | return make_my_cleanup (&final_cleanup_chain, function, arg); |
| 226 | } |
| 227 | |
| 228 | static void |
| 229 | do_freeargv (void *arg) |
| 230 | { |
| 231 | freeargv ((char **) arg); |
| 232 | } |
| 233 | |
| 234 | struct cleanup * |
| 235 | make_cleanup_freeargv (char **arg) |
| 236 | { |
| 237 | return make_my_cleanup (&cleanup_chain, do_freeargv, arg); |
| 238 | } |
| 239 | |
| 240 | static void |
| 241 | do_bfd_close_cleanup (void *arg) |
| 242 | { |
| 243 | bfd_close (arg); |
| 244 | } |
| 245 | |
| 246 | struct cleanup * |
| 247 | make_cleanup_bfd_close (bfd *abfd) |
| 248 | { |
| 249 | return make_cleanup (do_bfd_close_cleanup, abfd); |
| 250 | } |
| 251 | |
| 252 | static void |
| 253 | do_close_cleanup (void *arg) |
| 254 | { |
| 255 | int *fd = arg; |
| 256 | |
| 257 | close (*fd); |
| 258 | } |
| 259 | |
| 260 | struct cleanup * |
| 261 | make_cleanup_close (int fd) |
| 262 | { |
| 263 | int *saved_fd = xmalloc (sizeof (fd)); |
| 264 | |
| 265 | *saved_fd = fd; |
| 266 | return make_cleanup_dtor (do_close_cleanup, saved_fd, xfree); |
| 267 | } |
| 268 | |
| 269 | /* Helper function which does the work for make_cleanup_fclose. */ |
| 270 | |
| 271 | static void |
| 272 | do_fclose_cleanup (void *arg) |
| 273 | { |
| 274 | FILE *file = arg; |
| 275 | |
| 276 | fclose (file); |
| 277 | } |
| 278 | |
| 279 | /* Return a new cleanup that closes FILE. */ |
| 280 | |
| 281 | struct cleanup * |
| 282 | make_cleanup_fclose (FILE *file) |
| 283 | { |
| 284 | return make_cleanup (do_fclose_cleanup, file); |
| 285 | } |
| 286 | |
| 287 | /* Helper function which does the work for make_cleanup_obstack_free. */ |
| 288 | |
| 289 | static void |
| 290 | do_obstack_free (void *arg) |
| 291 | { |
| 292 | struct obstack *ob = arg; |
| 293 | |
| 294 | obstack_free (ob, NULL); |
| 295 | } |
| 296 | |
| 297 | /* Return a new cleanup that frees OBSTACK. */ |
| 298 | |
| 299 | struct cleanup * |
| 300 | make_cleanup_obstack_free (struct obstack *obstack) |
| 301 | { |
| 302 | return make_cleanup (do_obstack_free, obstack); |
| 303 | } |
| 304 | |
| 305 | static void |
| 306 | do_ui_file_delete (void *arg) |
| 307 | { |
| 308 | ui_file_delete (arg); |
| 309 | } |
| 310 | |
| 311 | struct cleanup * |
| 312 | make_cleanup_ui_file_delete (struct ui_file *arg) |
| 313 | { |
| 314 | return make_my_cleanup (&cleanup_chain, do_ui_file_delete, arg); |
| 315 | } |
| 316 | |
| 317 | /* Helper function for make_cleanup_ui_out_redirect_pop. */ |
| 318 | |
| 319 | static void |
| 320 | do_ui_out_redirect_pop (void *arg) |
| 321 | { |
| 322 | struct ui_out *uiout = arg; |
| 323 | |
| 324 | if (ui_out_redirect (uiout, NULL) < 0) |
| 325 | warning (_("Cannot restore redirection of the current output protocol")); |
| 326 | } |
| 327 | |
| 328 | /* Return a new cleanup that pops the last redirection by ui_out_redirect |
| 329 | with NULL parameter. */ |
| 330 | |
| 331 | struct cleanup * |
| 332 | make_cleanup_ui_out_redirect_pop (struct ui_out *uiout) |
| 333 | { |
| 334 | return make_my_cleanup (&cleanup_chain, do_ui_out_redirect_pop, uiout); |
| 335 | } |
| 336 | |
| 337 | static void |
| 338 | do_free_section_addr_info (void *arg) |
| 339 | { |
| 340 | free_section_addr_info (arg); |
| 341 | } |
| 342 | |
| 343 | struct cleanup * |
| 344 | make_cleanup_free_section_addr_info (struct section_addr_info *addrs) |
| 345 | { |
| 346 | return make_my_cleanup (&cleanup_chain, do_free_section_addr_info, addrs); |
| 347 | } |
| 348 | |
| 349 | struct restore_integer_closure |
| 350 | { |
| 351 | int *variable; |
| 352 | int value; |
| 353 | }; |
| 354 | |
| 355 | static void |
| 356 | restore_integer (void *p) |
| 357 | { |
| 358 | struct restore_integer_closure *closure = p; |
| 359 | |
| 360 | *(closure->variable) = closure->value; |
| 361 | } |
| 362 | |
| 363 | /* Remember the current value of *VARIABLE and make it restored when |
| 364 | the cleanup is run. */ |
| 365 | |
| 366 | struct cleanup * |
| 367 | make_cleanup_restore_integer (int *variable) |
| 368 | { |
| 369 | struct restore_integer_closure *c = |
| 370 | xmalloc (sizeof (struct restore_integer_closure)); |
| 371 | |
| 372 | c->variable = variable; |
| 373 | c->value = *variable; |
| 374 | |
| 375 | return make_my_cleanup2 (&cleanup_chain, restore_integer, (void *)c, |
| 376 | xfree); |
| 377 | } |
| 378 | |
| 379 | /* Remember the current value of *VARIABLE and make it restored when |
| 380 | the cleanup is run. */ |
| 381 | |
| 382 | struct cleanup * |
| 383 | make_cleanup_restore_uinteger (unsigned int *variable) |
| 384 | { |
| 385 | return make_cleanup_restore_integer ((int *) variable); |
| 386 | } |
| 387 | |
| 388 | /* Helper for make_cleanup_unpush_target. */ |
| 389 | |
| 390 | static void |
| 391 | do_unpush_target (void *arg) |
| 392 | { |
| 393 | struct target_ops *ops = arg; |
| 394 | |
| 395 | unpush_target (ops); |
| 396 | } |
| 397 | |
| 398 | /* Return a new cleanup that unpushes OPS. */ |
| 399 | |
| 400 | struct cleanup * |
| 401 | make_cleanup_unpush_target (struct target_ops *ops) |
| 402 | { |
| 403 | return make_my_cleanup (&cleanup_chain, do_unpush_target, ops); |
| 404 | } |
| 405 | |
| 406 | struct restore_ui_file_closure |
| 407 | { |
| 408 | struct ui_file **variable; |
| 409 | struct ui_file *value; |
| 410 | }; |
| 411 | |
| 412 | static void |
| 413 | do_restore_ui_file (void *p) |
| 414 | { |
| 415 | struct restore_ui_file_closure *closure = p; |
| 416 | |
| 417 | *(closure->variable) = closure->value; |
| 418 | } |
| 419 | |
| 420 | /* Remember the current value of *VARIABLE and make it restored when |
| 421 | the cleanup is run. */ |
| 422 | |
| 423 | struct cleanup * |
| 424 | make_cleanup_restore_ui_file (struct ui_file **variable) |
| 425 | { |
| 426 | struct restore_ui_file_closure *c = XNEW (struct restore_ui_file_closure); |
| 427 | |
| 428 | c->variable = variable; |
| 429 | c->value = *variable; |
| 430 | |
| 431 | return make_cleanup_dtor (do_restore_ui_file, (void *) c, xfree); |
| 432 | } |
| 433 | |
| 434 | struct cleanup * |
| 435 | make_my_cleanup2 (struct cleanup **pmy_chain, make_cleanup_ftype *function, |
| 436 | void *arg, void (*free_arg) (void *)) |
| 437 | { |
| 438 | struct cleanup *new |
| 439 | = (struct cleanup *) xmalloc (sizeof (struct cleanup)); |
| 440 | struct cleanup *old_chain = *pmy_chain; |
| 441 | |
| 442 | new->next = *pmy_chain; |
| 443 | new->function = function; |
| 444 | new->free_arg = free_arg; |
| 445 | new->arg = arg; |
| 446 | *pmy_chain = new; |
| 447 | |
| 448 | return old_chain; |
| 449 | } |
| 450 | |
| 451 | struct cleanup * |
| 452 | make_my_cleanup (struct cleanup **pmy_chain, make_cleanup_ftype *function, |
| 453 | void *arg) |
| 454 | { |
| 455 | return make_my_cleanup2 (pmy_chain, function, arg, NULL); |
| 456 | } |
| 457 | |
| 458 | /* Discard cleanups and do the actions they describe |
| 459 | until we get back to the point OLD_CHAIN in the cleanup_chain. */ |
| 460 | |
| 461 | void |
| 462 | do_cleanups (struct cleanup *old_chain) |
| 463 | { |
| 464 | do_my_cleanups (&cleanup_chain, old_chain); |
| 465 | } |
| 466 | |
| 467 | void |
| 468 | do_final_cleanups (struct cleanup *old_chain) |
| 469 | { |
| 470 | do_my_cleanups (&final_cleanup_chain, old_chain); |
| 471 | } |
| 472 | |
| 473 | static void |
| 474 | do_my_cleanups (struct cleanup **pmy_chain, |
| 475 | struct cleanup *old_chain) |
| 476 | { |
| 477 | struct cleanup *ptr; |
| 478 | |
| 479 | while ((ptr = *pmy_chain) != old_chain) |
| 480 | { |
| 481 | *pmy_chain = ptr->next; /* Do this first in case of recursion. */ |
| 482 | (*ptr->function) (ptr->arg); |
| 483 | if (ptr->free_arg) |
| 484 | (*ptr->free_arg) (ptr->arg); |
| 485 | xfree (ptr); |
| 486 | } |
| 487 | } |
| 488 | |
| 489 | /* Discard cleanups, not doing the actions they describe, |
| 490 | until we get back to the point OLD_CHAIN in the cleanup_chain. */ |
| 491 | |
| 492 | void |
| 493 | discard_cleanups (struct cleanup *old_chain) |
| 494 | { |
| 495 | discard_my_cleanups (&cleanup_chain, old_chain); |
| 496 | } |
| 497 | |
| 498 | void |
| 499 | discard_final_cleanups (struct cleanup *old_chain) |
| 500 | { |
| 501 | discard_my_cleanups (&final_cleanup_chain, old_chain); |
| 502 | } |
| 503 | |
| 504 | void |
| 505 | discard_my_cleanups (struct cleanup **pmy_chain, |
| 506 | struct cleanup *old_chain) |
| 507 | { |
| 508 | struct cleanup *ptr; |
| 509 | |
| 510 | while ((ptr = *pmy_chain) != old_chain) |
| 511 | { |
| 512 | *pmy_chain = ptr->next; |
| 513 | if (ptr->free_arg) |
| 514 | (*ptr->free_arg) (ptr->arg); |
| 515 | xfree (ptr); |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | /* Set the cleanup_chain to 0, and return the old cleanup chain. */ |
| 520 | struct cleanup * |
| 521 | save_cleanups (void) |
| 522 | { |
| 523 | return save_my_cleanups (&cleanup_chain); |
| 524 | } |
| 525 | |
| 526 | struct cleanup * |
| 527 | save_final_cleanups (void) |
| 528 | { |
| 529 | return save_my_cleanups (&final_cleanup_chain); |
| 530 | } |
| 531 | |
| 532 | struct cleanup * |
| 533 | save_my_cleanups (struct cleanup **pmy_chain) |
| 534 | { |
| 535 | struct cleanup *old_chain = *pmy_chain; |
| 536 | |
| 537 | *pmy_chain = 0; |
| 538 | return old_chain; |
| 539 | } |
| 540 | |
| 541 | /* Restore the cleanup chain from a previously saved chain. */ |
| 542 | void |
| 543 | restore_cleanups (struct cleanup *chain) |
| 544 | { |
| 545 | restore_my_cleanups (&cleanup_chain, chain); |
| 546 | } |
| 547 | |
| 548 | void |
| 549 | restore_final_cleanups (struct cleanup *chain) |
| 550 | { |
| 551 | restore_my_cleanups (&final_cleanup_chain, chain); |
| 552 | } |
| 553 | |
| 554 | void |
| 555 | restore_my_cleanups (struct cleanup **pmy_chain, struct cleanup *chain) |
| 556 | { |
| 557 | *pmy_chain = chain; |
| 558 | } |
| 559 | |
| 560 | /* This function is useful for cleanups. |
| 561 | Do |
| 562 | |
| 563 | foo = xmalloc (...); |
| 564 | old_chain = make_cleanup (free_current_contents, &foo); |
| 565 | |
| 566 | to arrange to free the object thus allocated. */ |
| 567 | |
| 568 | void |
| 569 | free_current_contents (void *ptr) |
| 570 | { |
| 571 | void **location = ptr; |
| 572 | |
| 573 | if (location == NULL) |
| 574 | internal_error (__FILE__, __LINE__, |
| 575 | _("free_current_contents: NULL pointer")); |
| 576 | if (*location != NULL) |
| 577 | { |
| 578 | xfree (*location); |
| 579 | *location = NULL; |
| 580 | } |
| 581 | } |
| 582 | |
| 583 | /* Provide a known function that does nothing, to use as a base for |
| 584 | for a possibly long chain of cleanups. This is useful where we |
| 585 | use the cleanup chain for handling normal cleanups as well as dealing |
| 586 | with cleanups that need to be done as a result of a call to error(). |
| 587 | In such cases, we may not be certain where the first cleanup is, unless |
| 588 | we have a do-nothing one to always use as the base. */ |
| 589 | |
| 590 | void |
| 591 | null_cleanup (void *arg) |
| 592 | { |
| 593 | } |
| 594 | |
| 595 | /* If nonzero, display time usage both at startup and for each command. */ |
| 596 | |
| 597 | static int display_time; |
| 598 | |
| 599 | /* If nonzero, display space usage both at startup and for each command. */ |
| 600 | |
| 601 | static int display_space; |
| 602 | |
| 603 | /* Records a run time and space usage to be used as a base for |
| 604 | reporting elapsed time or change in space. In addition, |
| 605 | the msg_type field indicates whether the saved time is from the |
| 606 | beginning of GDB execution (0) or the beginning of an individual |
| 607 | command execution (1). */ |
| 608 | struct cmd_stats |
| 609 | { |
| 610 | int msg_type; |
| 611 | long start_time; |
| 612 | long start_space; |
| 613 | }; |
| 614 | |
| 615 | /* Set whether to display time statistics to NEW_VALUE (non-zero |
| 616 | means true). */ |
| 617 | void |
| 618 | set_display_time (int new_value) |
| 619 | { |
| 620 | display_time = new_value; |
| 621 | } |
| 622 | |
| 623 | /* Set whether to display space statistics to NEW_VALUE (non-zero |
| 624 | means true). */ |
| 625 | void |
| 626 | set_display_space (int new_value) |
| 627 | { |
| 628 | display_space = new_value; |
| 629 | } |
| 630 | |
| 631 | /* As indicated by display_time and display_space, report GDB's elapsed time |
| 632 | and space usage from the base time and space provided in ARG, which |
| 633 | must be a pointer to a struct cmd_stat. This function is intended |
| 634 | to be called as a cleanup. */ |
| 635 | static void |
| 636 | report_command_stats (void *arg) |
| 637 | { |
| 638 | struct cmd_stats *start_stats = (struct cmd_stats *) arg; |
| 639 | int msg_type = start_stats->msg_type; |
| 640 | |
| 641 | if (display_time) |
| 642 | { |
| 643 | long cmd_time = get_run_time () - start_stats->start_time; |
| 644 | |
| 645 | printf_unfiltered (msg_type == 0 |
| 646 | ? _("Startup time: %ld.%06ld\n") |
| 647 | : _("Command execution time: %ld.%06ld\n"), |
| 648 | cmd_time / 1000000, cmd_time % 1000000); |
| 649 | } |
| 650 | |
| 651 | if (display_space) |
| 652 | { |
| 653 | #ifdef HAVE_SBRK |
| 654 | char *lim = (char *) sbrk (0); |
| 655 | |
| 656 | long space_now = lim - lim_at_start; |
| 657 | long space_diff = space_now - start_stats->start_space; |
| 658 | |
| 659 | printf_unfiltered (msg_type == 0 |
| 660 | ? _("Space used: %ld (%c%ld during startup)\n") |
| 661 | : _("Space used: %ld (%c%ld for this command)\n"), |
| 662 | space_now, |
| 663 | (space_diff >= 0 ? '+' : '-'), |
| 664 | space_diff); |
| 665 | #endif |
| 666 | } |
| 667 | } |
| 668 | |
| 669 | /* Create a cleanup that reports time and space used since its |
| 670 | creation. Precise messages depend on MSG_TYPE: |
| 671 | 0: Initial time/space |
| 672 | 1: Individual command time/space. */ |
| 673 | struct cleanup * |
| 674 | make_command_stats_cleanup (int msg_type) |
| 675 | { |
| 676 | struct cmd_stats *new_stat = XMALLOC (struct cmd_stats); |
| 677 | |
| 678 | #ifdef HAVE_SBRK |
| 679 | char *lim = (char *) sbrk (0); |
| 680 | new_stat->start_space = lim - lim_at_start; |
| 681 | #endif |
| 682 | |
| 683 | new_stat->msg_type = msg_type; |
| 684 | new_stat->start_time = get_run_time (); |
| 685 | |
| 686 | return make_cleanup_dtor (report_command_stats, new_stat, xfree); |
| 687 | } |
| 688 | |
| 689 | /* Continuations are implemented as cleanups internally. Inherit from |
| 690 | cleanups. */ |
| 691 | struct continuation |
| 692 | { |
| 693 | struct cleanup base; |
| 694 | }; |
| 695 | |
| 696 | /* Add a continuation to the continuation list of THREAD. The new |
| 697 | continuation will be added at the front. */ |
| 698 | void |
| 699 | add_continuation (struct thread_info *thread, |
| 700 | void (*continuation_hook) (void *), void *args, |
| 701 | void (*continuation_free_args) (void *)) |
| 702 | { |
| 703 | struct cleanup *as_cleanup = &thread->continuations->base; |
| 704 | make_cleanup_ftype *continuation_hook_fn = continuation_hook; |
| 705 | |
| 706 | make_my_cleanup2 (&as_cleanup, |
| 707 | continuation_hook_fn, |
| 708 | args, |
| 709 | continuation_free_args); |
| 710 | |
| 711 | thread->continuations = (struct continuation *) as_cleanup; |
| 712 | } |
| 713 | |
| 714 | /* Add a continuation to the continuation list of INFERIOR. The new |
| 715 | continuation will be added at the front. */ |
| 716 | |
| 717 | void |
| 718 | add_inferior_continuation (void (*continuation_hook) (void *), void *args, |
| 719 | void (*continuation_free_args) (void *)) |
| 720 | { |
| 721 | struct inferior *inf = current_inferior (); |
| 722 | struct cleanup *as_cleanup = &inf->continuations->base; |
| 723 | make_cleanup_ftype *continuation_hook_fn = continuation_hook; |
| 724 | |
| 725 | make_my_cleanup2 (&as_cleanup, |
| 726 | continuation_hook_fn, |
| 727 | args, |
| 728 | continuation_free_args); |
| 729 | |
| 730 | inf->continuations = (struct continuation *) as_cleanup; |
| 731 | } |
| 732 | |
| 733 | /* Do all continuations of the current inferior. */ |
| 734 | |
| 735 | void |
| 736 | do_all_inferior_continuations (void) |
| 737 | { |
| 738 | struct cleanup *as_cleanup; |
| 739 | struct inferior *inf = current_inferior (); |
| 740 | |
| 741 | if (inf->continuations == NULL) |
| 742 | return; |
| 743 | |
| 744 | /* Copy the list header into another pointer, and set the global |
| 745 | list header to null, so that the global list can change as a side |
| 746 | effect of invoking the continuations and the processing of the |
| 747 | preexisting continuations will not be affected. */ |
| 748 | |
| 749 | as_cleanup = &inf->continuations->base; |
| 750 | inf->continuations = NULL; |
| 751 | |
| 752 | /* Work now on the list we have set aside. */ |
| 753 | do_my_cleanups (&as_cleanup, NULL); |
| 754 | } |
| 755 | |
| 756 | /* Get rid of all the inferior-wide continuations of INF. */ |
| 757 | |
| 758 | void |
| 759 | discard_all_inferior_continuations (struct inferior *inf) |
| 760 | { |
| 761 | struct cleanup *continuation_ptr = &inf->continuations->base; |
| 762 | |
| 763 | discard_my_cleanups (&continuation_ptr, NULL); |
| 764 | inf->continuations = NULL; |
| 765 | } |
| 766 | |
| 767 | static void |
| 768 | restore_thread_cleanup (void *arg) |
| 769 | { |
| 770 | ptid_t *ptid_p = arg; |
| 771 | |
| 772 | switch_to_thread (*ptid_p); |
| 773 | } |
| 774 | |
| 775 | /* Walk down the continuation list of PTID, and execute all the |
| 776 | continuations. There is a problem though. In some cases new |
| 777 | continuations may be added while we are in the middle of this loop. |
| 778 | If this happens they will be added in the front, and done before we |
| 779 | have a chance of exhausting those that were already there. We need |
| 780 | to then save the beginning of the list in a pointer and do the |
| 781 | continuations from there on, instead of using the global beginning |
| 782 | of list as our iteration pointer. */ |
| 783 | static void |
| 784 | do_all_continuations_ptid (ptid_t ptid, |
| 785 | struct continuation **continuations_p) |
| 786 | { |
| 787 | struct cleanup *old_chain; |
| 788 | ptid_t current_thread; |
| 789 | struct cleanup *as_cleanup; |
| 790 | |
| 791 | if (*continuations_p == NULL) |
| 792 | return; |
| 793 | |
| 794 | current_thread = inferior_ptid; |
| 795 | |
| 796 | /* Restore selected thread on exit. Don't try to restore the frame |
| 797 | as well, because: |
| 798 | |
| 799 | - When running continuations, the selected frame is always #0. |
| 800 | |
| 801 | - The continuations may trigger symbol file loads, which may |
| 802 | change the frame layout (frame ids change), which would trigger |
| 803 | a warning if we used make_cleanup_restore_current_thread. */ |
| 804 | |
| 805 | old_chain = make_cleanup (restore_thread_cleanup, ¤t_thread); |
| 806 | |
| 807 | /* Let the continuation see this thread as selected. */ |
| 808 | switch_to_thread (ptid); |
| 809 | |
| 810 | /* Copy the list header into another pointer, and set the global |
| 811 | list header to null, so that the global list can change as a side |
| 812 | effect of invoking the continuations and the processing of the |
| 813 | preexisting continuations will not be affected. */ |
| 814 | |
| 815 | as_cleanup = &(*continuations_p)->base; |
| 816 | *continuations_p = NULL; |
| 817 | |
| 818 | /* Work now on the list we have set aside. */ |
| 819 | do_my_cleanups (&as_cleanup, NULL); |
| 820 | |
| 821 | do_cleanups (old_chain); |
| 822 | } |
| 823 | |
| 824 | /* Callback for iterate over threads. */ |
| 825 | static int |
| 826 | do_all_continuations_thread_callback (struct thread_info *thread, void *data) |
| 827 | { |
| 828 | do_all_continuations_ptid (thread->ptid, &thread->continuations); |
| 829 | return 0; |
| 830 | } |
| 831 | |
| 832 | /* Do all continuations of thread THREAD. */ |
| 833 | void |
| 834 | do_all_continuations_thread (struct thread_info *thread) |
| 835 | { |
| 836 | do_all_continuations_thread_callback (thread, NULL); |
| 837 | } |
| 838 | |
| 839 | /* Do all continuations of all threads. */ |
| 840 | void |
| 841 | do_all_continuations (void) |
| 842 | { |
| 843 | iterate_over_threads (do_all_continuations_thread_callback, NULL); |
| 844 | } |
| 845 | |
| 846 | /* Callback for iterate over threads. */ |
| 847 | static int |
| 848 | discard_all_continuations_thread_callback (struct thread_info *thread, |
| 849 | void *data) |
| 850 | { |
| 851 | struct cleanup *continuation_ptr = &thread->continuations->base; |
| 852 | |
| 853 | discard_my_cleanups (&continuation_ptr, NULL); |
| 854 | thread->continuations = NULL; |
| 855 | return 0; |
| 856 | } |
| 857 | |
| 858 | /* Get rid of all the continuations of THREAD. */ |
| 859 | void |
| 860 | discard_all_continuations_thread (struct thread_info *thread) |
| 861 | { |
| 862 | discard_all_continuations_thread_callback (thread, NULL); |
| 863 | } |
| 864 | |
| 865 | /* Get rid of all the continuations of all threads. */ |
| 866 | void |
| 867 | discard_all_continuations (void) |
| 868 | { |
| 869 | iterate_over_threads (discard_all_continuations_thread_callback, NULL); |
| 870 | } |
| 871 | |
| 872 | |
| 873 | /* Add a continuation to the intermediate continuation list of THREAD. |
| 874 | The new continuation will be added at the front. */ |
| 875 | void |
| 876 | add_intermediate_continuation (struct thread_info *thread, |
| 877 | void (*continuation_hook) |
| 878 | (void *), void *args, |
| 879 | void (*continuation_free_args) (void *)) |
| 880 | { |
| 881 | struct cleanup *as_cleanup = &thread->intermediate_continuations->base; |
| 882 | make_cleanup_ftype *continuation_hook_fn = continuation_hook; |
| 883 | |
| 884 | make_my_cleanup2 (&as_cleanup, |
| 885 | continuation_hook_fn, |
| 886 | args, |
| 887 | continuation_free_args); |
| 888 | |
| 889 | thread->intermediate_continuations = (struct continuation *) as_cleanup; |
| 890 | } |
| 891 | |
| 892 | /* Walk down the cmd_continuation list, and execute all the |
| 893 | continuations. There is a problem though. In some cases new |
| 894 | continuations may be added while we are in the middle of this |
| 895 | loop. If this happens they will be added in the front, and done |
| 896 | before we have a chance of exhausting those that were already |
| 897 | there. We need to then save the beginning of the list in a pointer |
| 898 | and do the continuations from there on, instead of using the |
| 899 | global beginning of list as our iteration pointer. */ |
| 900 | static int |
| 901 | do_all_intermediate_continuations_thread_callback (struct thread_info *thread, |
| 902 | void *data) |
| 903 | { |
| 904 | do_all_continuations_ptid (thread->ptid, |
| 905 | &thread->intermediate_continuations); |
| 906 | return 0; |
| 907 | } |
| 908 | |
| 909 | /* Do all intermediate continuations of thread THREAD. */ |
| 910 | void |
| 911 | do_all_intermediate_continuations_thread (struct thread_info *thread) |
| 912 | { |
| 913 | do_all_intermediate_continuations_thread_callback (thread, NULL); |
| 914 | } |
| 915 | |
| 916 | /* Do all intermediate continuations of all threads. */ |
| 917 | void |
| 918 | do_all_intermediate_continuations (void) |
| 919 | { |
| 920 | iterate_over_threads (do_all_intermediate_continuations_thread_callback, |
| 921 | NULL); |
| 922 | } |
| 923 | |
| 924 | /* Callback for iterate over threads. */ |
| 925 | static int |
| 926 | discard_all_intermediate_continuations_thread_callback (struct thread_info *thread, |
| 927 | void *data) |
| 928 | { |
| 929 | struct cleanup *continuation_ptr = &thread->intermediate_continuations->base; |
| 930 | |
| 931 | discard_my_cleanups (&continuation_ptr, NULL); |
| 932 | thread->intermediate_continuations = NULL; |
| 933 | return 0; |
| 934 | } |
| 935 | |
| 936 | /* Get rid of all the intermediate continuations of THREAD. */ |
| 937 | void |
| 938 | discard_all_intermediate_continuations_thread (struct thread_info *thread) |
| 939 | { |
| 940 | discard_all_intermediate_continuations_thread_callback (thread, NULL); |
| 941 | } |
| 942 | |
| 943 | /* Get rid of all the intermediate continuations of all threads. */ |
| 944 | void |
| 945 | discard_all_intermediate_continuations (void) |
| 946 | { |
| 947 | iterate_over_threads (discard_all_intermediate_continuations_thread_callback, |
| 948 | NULL); |
| 949 | } |
| 950 | \f |
| 951 | |
| 952 | |
| 953 | /* Print a warning message. The first argument STRING is the warning |
| 954 | message, used as an fprintf format string, the second is the |
| 955 | va_list of arguments for that string. A warning is unfiltered (not |
| 956 | paginated) so that the user does not need to page through each |
| 957 | screen full of warnings when there are lots of them. */ |
| 958 | |
| 959 | void |
| 960 | vwarning (const char *string, va_list args) |
| 961 | { |
| 962 | if (deprecated_warning_hook) |
| 963 | (*deprecated_warning_hook) (string, args); |
| 964 | else |
| 965 | { |
| 966 | target_terminal_ours (); |
| 967 | wrap_here (""); /* Force out any buffered output. */ |
| 968 | gdb_flush (gdb_stdout); |
| 969 | if (warning_pre_print) |
| 970 | fputs_unfiltered (warning_pre_print, gdb_stderr); |
| 971 | vfprintf_unfiltered (gdb_stderr, string, args); |
| 972 | fprintf_unfiltered (gdb_stderr, "\n"); |
| 973 | va_end (args); |
| 974 | } |
| 975 | } |
| 976 | |
| 977 | /* Print a warning message. |
| 978 | The first argument STRING is the warning message, used as a fprintf string, |
| 979 | and the remaining args are passed as arguments to it. |
| 980 | The primary difference between warnings and errors is that a warning |
| 981 | does not force the return to command level. */ |
| 982 | |
| 983 | void |
| 984 | warning (const char *string, ...) |
| 985 | { |
| 986 | va_list args; |
| 987 | |
| 988 | va_start (args, string); |
| 989 | vwarning (string, args); |
| 990 | va_end (args); |
| 991 | } |
| 992 | |
| 993 | /* Print an error message and return to command level. |
| 994 | The first argument STRING is the error message, used as a fprintf string, |
| 995 | and the remaining args are passed as arguments to it. */ |
| 996 | |
| 997 | void |
| 998 | verror (const char *string, va_list args) |
| 999 | { |
| 1000 | throw_verror (GENERIC_ERROR, string, args); |
| 1001 | } |
| 1002 | |
| 1003 | void |
| 1004 | error (const char *string, ...) |
| 1005 | { |
| 1006 | va_list args; |
| 1007 | |
| 1008 | va_start (args, string); |
| 1009 | throw_verror (GENERIC_ERROR, string, args); |
| 1010 | va_end (args); |
| 1011 | } |
| 1012 | |
| 1013 | /* Print an error message and quit. |
| 1014 | The first argument STRING is the error message, used as a fprintf string, |
| 1015 | and the remaining args are passed as arguments to it. */ |
| 1016 | |
| 1017 | void |
| 1018 | vfatal (const char *string, va_list args) |
| 1019 | { |
| 1020 | throw_vfatal (string, args); |
| 1021 | } |
| 1022 | |
| 1023 | void |
| 1024 | fatal (const char *string, ...) |
| 1025 | { |
| 1026 | va_list args; |
| 1027 | |
| 1028 | va_start (args, string); |
| 1029 | throw_vfatal (string, args); |
| 1030 | va_end (args); |
| 1031 | } |
| 1032 | |
| 1033 | void |
| 1034 | error_stream (struct ui_file *stream) |
| 1035 | { |
| 1036 | char *message = ui_file_xstrdup (stream, NULL); |
| 1037 | |
| 1038 | make_cleanup (xfree, message); |
| 1039 | error (("%s"), message); |
| 1040 | } |
| 1041 | |
| 1042 | /* Dump core trying to increase the core soft limit to hard limit first. */ |
| 1043 | |
| 1044 | static void |
| 1045 | dump_core (void) |
| 1046 | { |
| 1047 | #ifdef HAVE_SETRLIMIT |
| 1048 | struct rlimit rlim = { RLIM_INFINITY, RLIM_INFINITY }; |
| 1049 | |
| 1050 | setrlimit (RLIMIT_CORE, &rlim); |
| 1051 | #endif /* HAVE_SETRLIMIT */ |
| 1052 | |
| 1053 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
| 1054 | } |
| 1055 | |
| 1056 | /* Check whether GDB will be able to dump core using the dump_core |
| 1057 | function. */ |
| 1058 | |
| 1059 | static int |
| 1060 | can_dump_core (const char *reason) |
| 1061 | { |
| 1062 | #ifdef HAVE_GETRLIMIT |
| 1063 | struct rlimit rlim; |
| 1064 | |
| 1065 | /* Be quiet and assume we can dump if an error is returned. */ |
| 1066 | if (getrlimit (RLIMIT_CORE, &rlim) != 0) |
| 1067 | return 1; |
| 1068 | |
| 1069 | if (rlim.rlim_max == 0) |
| 1070 | { |
| 1071 | fprintf_unfiltered (gdb_stderr, |
| 1072 | _("%s\nUnable to dump core, use `ulimit -c" |
| 1073 | " unlimited' before executing GDB next time.\n"), |
| 1074 | reason); |
| 1075 | return 0; |
| 1076 | } |
| 1077 | #endif /* HAVE_GETRLIMIT */ |
| 1078 | |
| 1079 | return 1; |
| 1080 | } |
| 1081 | |
| 1082 | /* Allow the user to configure the debugger behavior with respect to |
| 1083 | what to do when an internal problem is detected. */ |
| 1084 | |
| 1085 | const char internal_problem_ask[] = "ask"; |
| 1086 | const char internal_problem_yes[] = "yes"; |
| 1087 | const char internal_problem_no[] = "no"; |
| 1088 | static const char *internal_problem_modes[] = |
| 1089 | { |
| 1090 | internal_problem_ask, |
| 1091 | internal_problem_yes, |
| 1092 | internal_problem_no, |
| 1093 | NULL |
| 1094 | }; |
| 1095 | |
| 1096 | /* Print a message reporting an internal error/warning. Ask the user |
| 1097 | if they want to continue, dump core, or just exit. Return |
| 1098 | something to indicate a quit. */ |
| 1099 | |
| 1100 | struct internal_problem |
| 1101 | { |
| 1102 | const char *name; |
| 1103 | const char *should_quit; |
| 1104 | const char *should_dump_core; |
| 1105 | }; |
| 1106 | |
| 1107 | /* Report a problem, internal to GDB, to the user. Once the problem |
| 1108 | has been reported, and assuming GDB didn't quit, the caller can |
| 1109 | either allow execution to resume or throw an error. */ |
| 1110 | |
| 1111 | static void ATTRIBUTE_PRINTF (4, 0) |
| 1112 | internal_vproblem (struct internal_problem *problem, |
| 1113 | const char *file, int line, const char *fmt, va_list ap) |
| 1114 | { |
| 1115 | static int dejavu; |
| 1116 | int quit_p; |
| 1117 | int dump_core_p; |
| 1118 | char *reason; |
| 1119 | |
| 1120 | /* Don't allow infinite error/warning recursion. */ |
| 1121 | { |
| 1122 | static char msg[] = "Recursive internal problem.\n"; |
| 1123 | |
| 1124 | switch (dejavu) |
| 1125 | { |
| 1126 | case 0: |
| 1127 | dejavu = 1; |
| 1128 | break; |
| 1129 | case 1: |
| 1130 | dejavu = 2; |
| 1131 | fputs_unfiltered (msg, gdb_stderr); |
| 1132 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
| 1133 | default: |
| 1134 | dejavu = 3; |
| 1135 | /* Newer GLIBC versions put the warn_unused_result attribute |
| 1136 | on write, but this is one of those rare cases where |
| 1137 | ignoring the return value is correct. Casting to (void) |
| 1138 | does not fix this problem. This is the solution suggested |
| 1139 | at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */ |
| 1140 | if (write (STDERR_FILENO, msg, sizeof (msg)) != sizeof (msg)) |
| 1141 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
| 1142 | exit (1); |
| 1143 | } |
| 1144 | } |
| 1145 | |
| 1146 | /* Try to get the message out and at the start of a new line. */ |
| 1147 | target_terminal_ours (); |
| 1148 | begin_line (); |
| 1149 | |
| 1150 | /* Create a string containing the full error/warning message. Need |
| 1151 | to call query with this full string, as otherwize the reason |
| 1152 | (error/warning) and question become separated. Format using a |
| 1153 | style similar to a compiler error message. Include extra detail |
| 1154 | so that the user knows that they are living on the edge. */ |
| 1155 | { |
| 1156 | char *msg; |
| 1157 | |
| 1158 | msg = xstrvprintf (fmt, ap); |
| 1159 | reason = xstrprintf ("%s:%d: %s: %s\n" |
| 1160 | "A problem internal to GDB has been detected,\n" |
| 1161 | "further debugging may prove unreliable.", |
| 1162 | file, line, problem->name, msg); |
| 1163 | xfree (msg); |
| 1164 | make_cleanup (xfree, reason); |
| 1165 | } |
| 1166 | |
| 1167 | if (problem->should_quit == internal_problem_ask) |
| 1168 | { |
| 1169 | /* Default (yes/batch case) is to quit GDB. When in batch mode |
| 1170 | this lessens the likelihood of GDB going into an infinite |
| 1171 | loop. */ |
| 1172 | if (caution == 0) |
| 1173 | { |
| 1174 | /* Emit the message and quit. */ |
| 1175 | fputs_unfiltered (reason, gdb_stderr); |
| 1176 | fputs_unfiltered ("\n", gdb_stderr); |
| 1177 | quit_p = 1; |
| 1178 | } |
| 1179 | else |
| 1180 | quit_p = query (_("%s\nQuit this debugging session? "), reason); |
| 1181 | } |
| 1182 | else if (problem->should_quit == internal_problem_yes) |
| 1183 | quit_p = 1; |
| 1184 | else if (problem->should_quit == internal_problem_no) |
| 1185 | quit_p = 0; |
| 1186 | else |
| 1187 | internal_error (__FILE__, __LINE__, _("bad switch")); |
| 1188 | |
| 1189 | if (problem->should_dump_core == internal_problem_ask) |
| 1190 | { |
| 1191 | if (!can_dump_core (reason)) |
| 1192 | dump_core_p = 0; |
| 1193 | else |
| 1194 | { |
| 1195 | /* Default (yes/batch case) is to dump core. This leaves a GDB |
| 1196 | `dropping' so that it is easier to see that something went |
| 1197 | wrong in GDB. */ |
| 1198 | dump_core_p = query (_("%s\nCreate a core file of GDB? "), reason); |
| 1199 | } |
| 1200 | } |
| 1201 | else if (problem->should_dump_core == internal_problem_yes) |
| 1202 | dump_core_p = can_dump_core (reason); |
| 1203 | else if (problem->should_dump_core == internal_problem_no) |
| 1204 | dump_core_p = 0; |
| 1205 | else |
| 1206 | internal_error (__FILE__, __LINE__, _("bad switch")); |
| 1207 | |
| 1208 | if (quit_p) |
| 1209 | { |
| 1210 | if (dump_core_p) |
| 1211 | dump_core (); |
| 1212 | else |
| 1213 | exit (1); |
| 1214 | } |
| 1215 | else |
| 1216 | { |
| 1217 | if (dump_core_p) |
| 1218 | { |
| 1219 | #ifdef HAVE_WORKING_FORK |
| 1220 | if (fork () == 0) |
| 1221 | dump_core (); |
| 1222 | #endif |
| 1223 | } |
| 1224 | } |
| 1225 | |
| 1226 | dejavu = 0; |
| 1227 | } |
| 1228 | |
| 1229 | static struct internal_problem internal_error_problem = { |
| 1230 | "internal-error", internal_problem_ask, internal_problem_ask |
| 1231 | }; |
| 1232 | |
| 1233 | void |
| 1234 | internal_verror (const char *file, int line, const char *fmt, va_list ap) |
| 1235 | { |
| 1236 | internal_vproblem (&internal_error_problem, file, line, fmt, ap); |
| 1237 | deprecated_throw_reason (RETURN_ERROR); |
| 1238 | } |
| 1239 | |
| 1240 | void |
| 1241 | internal_error (const char *file, int line, const char *string, ...) |
| 1242 | { |
| 1243 | va_list ap; |
| 1244 | |
| 1245 | va_start (ap, string); |
| 1246 | internal_verror (file, line, string, ap); |
| 1247 | va_end (ap); |
| 1248 | } |
| 1249 | |
| 1250 | static struct internal_problem internal_warning_problem = { |
| 1251 | "internal-warning", internal_problem_ask, internal_problem_ask |
| 1252 | }; |
| 1253 | |
| 1254 | void |
| 1255 | internal_vwarning (const char *file, int line, const char *fmt, va_list ap) |
| 1256 | { |
| 1257 | internal_vproblem (&internal_warning_problem, file, line, fmt, ap); |
| 1258 | } |
| 1259 | |
| 1260 | void |
| 1261 | internal_warning (const char *file, int line, const char *string, ...) |
| 1262 | { |
| 1263 | va_list ap; |
| 1264 | |
| 1265 | va_start (ap, string); |
| 1266 | internal_vwarning (file, line, string, ap); |
| 1267 | va_end (ap); |
| 1268 | } |
| 1269 | |
| 1270 | /* Dummy functions to keep add_prefix_cmd happy. */ |
| 1271 | |
| 1272 | static void |
| 1273 | set_internal_problem_cmd (char *args, int from_tty) |
| 1274 | { |
| 1275 | } |
| 1276 | |
| 1277 | static void |
| 1278 | show_internal_problem_cmd (char *args, int from_tty) |
| 1279 | { |
| 1280 | } |
| 1281 | |
| 1282 | /* When GDB reports an internal problem (error or warning) it gives |
| 1283 | the user the opportunity to quit GDB and/or create a core file of |
| 1284 | the current debug session. This function registers a few commands |
| 1285 | that make it possible to specify that GDB should always or never |
| 1286 | quit or create a core file, without asking. The commands look |
| 1287 | like: |
| 1288 | |
| 1289 | maint set PROBLEM-NAME quit ask|yes|no |
| 1290 | maint show PROBLEM-NAME quit |
| 1291 | maint set PROBLEM-NAME corefile ask|yes|no |
| 1292 | maint show PROBLEM-NAME corefile |
| 1293 | |
| 1294 | Where PROBLEM-NAME is currently "internal-error" or |
| 1295 | "internal-warning". */ |
| 1296 | |
| 1297 | static void |
| 1298 | add_internal_problem_command (struct internal_problem *problem) |
| 1299 | { |
| 1300 | struct cmd_list_element **set_cmd_list; |
| 1301 | struct cmd_list_element **show_cmd_list; |
| 1302 | char *set_doc; |
| 1303 | char *show_doc; |
| 1304 | |
| 1305 | set_cmd_list = xmalloc (sizeof (*set_cmd_list)); |
| 1306 | show_cmd_list = xmalloc (sizeof (*set_cmd_list)); |
| 1307 | *set_cmd_list = NULL; |
| 1308 | *show_cmd_list = NULL; |
| 1309 | |
| 1310 | set_doc = xstrprintf (_("Configure what GDB does when %s is detected."), |
| 1311 | problem->name); |
| 1312 | |
| 1313 | show_doc = xstrprintf (_("Show what GDB does when %s is detected."), |
| 1314 | problem->name); |
| 1315 | |
| 1316 | add_prefix_cmd ((char*) problem->name, |
| 1317 | class_maintenance, set_internal_problem_cmd, set_doc, |
| 1318 | set_cmd_list, |
| 1319 | concat ("maintenance set ", problem->name, " ", |
| 1320 | (char *) NULL), |
| 1321 | 0/*allow-unknown*/, &maintenance_set_cmdlist); |
| 1322 | |
| 1323 | add_prefix_cmd ((char*) problem->name, |
| 1324 | class_maintenance, show_internal_problem_cmd, show_doc, |
| 1325 | show_cmd_list, |
| 1326 | concat ("maintenance show ", problem->name, " ", |
| 1327 | (char *) NULL), |
| 1328 | 0/*allow-unknown*/, &maintenance_show_cmdlist); |
| 1329 | |
| 1330 | set_doc = xstrprintf (_("Set whether GDB should quit " |
| 1331 | "when an %s is detected"), |
| 1332 | problem->name); |
| 1333 | show_doc = xstrprintf (_("Show whether GDB will quit " |
| 1334 | "when an %s is detected"), |
| 1335 | problem->name); |
| 1336 | add_setshow_enum_cmd ("quit", class_maintenance, |
| 1337 | internal_problem_modes, |
| 1338 | &problem->should_quit, |
| 1339 | set_doc, |
| 1340 | show_doc, |
| 1341 | NULL, /* help_doc */ |
| 1342 | NULL, /* setfunc */ |
| 1343 | NULL, /* showfunc */ |
| 1344 | set_cmd_list, |
| 1345 | show_cmd_list); |
| 1346 | |
| 1347 | xfree (set_doc); |
| 1348 | xfree (show_doc); |
| 1349 | |
| 1350 | set_doc = xstrprintf (_("Set whether GDB should create a core " |
| 1351 | "file of GDB when %s is detected"), |
| 1352 | problem->name); |
| 1353 | show_doc = xstrprintf (_("Show whether GDB will create a core " |
| 1354 | "file of GDB when %s is detected"), |
| 1355 | problem->name); |
| 1356 | add_setshow_enum_cmd ("corefile", class_maintenance, |
| 1357 | internal_problem_modes, |
| 1358 | &problem->should_dump_core, |
| 1359 | set_doc, |
| 1360 | show_doc, |
| 1361 | NULL, /* help_doc */ |
| 1362 | NULL, /* setfunc */ |
| 1363 | NULL, /* showfunc */ |
| 1364 | set_cmd_list, |
| 1365 | show_cmd_list); |
| 1366 | |
| 1367 | xfree (set_doc); |
| 1368 | xfree (show_doc); |
| 1369 | } |
| 1370 | |
| 1371 | /* Print the system error message for errno, and also mention STRING |
| 1372 | as the file name for which the error was encountered. |
| 1373 | Then return to command level. */ |
| 1374 | |
| 1375 | void |
| 1376 | perror_with_name (const char *string) |
| 1377 | { |
| 1378 | char *err; |
| 1379 | char *combined; |
| 1380 | |
| 1381 | err = safe_strerror (errno); |
| 1382 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); |
| 1383 | strcpy (combined, string); |
| 1384 | strcat (combined, ": "); |
| 1385 | strcat (combined, err); |
| 1386 | |
| 1387 | /* I understand setting these is a matter of taste. Still, some people |
| 1388 | may clear errno but not know about bfd_error. Doing this here is not |
| 1389 | unreasonable. */ |
| 1390 | bfd_set_error (bfd_error_no_error); |
| 1391 | errno = 0; |
| 1392 | |
| 1393 | error (_("%s."), combined); |
| 1394 | } |
| 1395 | |
| 1396 | /* Print the system error message for ERRCODE, and also mention STRING |
| 1397 | as the file name for which the error was encountered. */ |
| 1398 | |
| 1399 | void |
| 1400 | print_sys_errmsg (const char *string, int errcode) |
| 1401 | { |
| 1402 | char *err; |
| 1403 | char *combined; |
| 1404 | |
| 1405 | err = safe_strerror (errcode); |
| 1406 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); |
| 1407 | strcpy (combined, string); |
| 1408 | strcat (combined, ": "); |
| 1409 | strcat (combined, err); |
| 1410 | |
| 1411 | /* We want anything which was printed on stdout to come out first, before |
| 1412 | this message. */ |
| 1413 | gdb_flush (gdb_stdout); |
| 1414 | fprintf_unfiltered (gdb_stderr, "%s.\n", combined); |
| 1415 | } |
| 1416 | |
| 1417 | /* Control C eventually causes this to be called, at a convenient time. */ |
| 1418 | |
| 1419 | void |
| 1420 | quit (void) |
| 1421 | { |
| 1422 | #ifdef __MSDOS__ |
| 1423 | /* No steenking SIGINT will ever be coming our way when the |
| 1424 | program is resumed. Don't lie. */ |
| 1425 | fatal ("Quit"); |
| 1426 | #else |
| 1427 | if (job_control |
| 1428 | /* If there is no terminal switching for this target, then we can't |
| 1429 | possibly get screwed by the lack of job control. */ |
| 1430 | || current_target.to_terminal_ours == NULL) |
| 1431 | fatal ("Quit"); |
| 1432 | else |
| 1433 | fatal ("Quit (expect signal SIGINT when the program is resumed)"); |
| 1434 | #endif |
| 1435 | } |
| 1436 | |
| 1437 | \f |
| 1438 | /* Called when a memory allocation fails, with the number of bytes of |
| 1439 | memory requested in SIZE. */ |
| 1440 | |
| 1441 | void |
| 1442 | nomem (long size) |
| 1443 | { |
| 1444 | if (size > 0) |
| 1445 | { |
| 1446 | internal_error (__FILE__, __LINE__, |
| 1447 | _("virtual memory exhausted: can't allocate %ld bytes."), |
| 1448 | size); |
| 1449 | } |
| 1450 | else |
| 1451 | { |
| 1452 | internal_error (__FILE__, __LINE__, _("virtual memory exhausted.")); |
| 1453 | } |
| 1454 | } |
| 1455 | |
| 1456 | /* The xmalloc() (libiberty.h) family of memory management routines. |
| 1457 | |
| 1458 | These are like the ISO-C malloc() family except that they implement |
| 1459 | consistent semantics and guard against typical memory management |
| 1460 | problems. */ |
| 1461 | |
| 1462 | /* NOTE: These are declared using PTR to ensure consistency with |
| 1463 | "libiberty.h". xfree() is GDB local. */ |
| 1464 | |
| 1465 | PTR /* ARI: PTR */ |
| 1466 | xmalloc (size_t size) |
| 1467 | { |
| 1468 | void *val; |
| 1469 | |
| 1470 | /* See libiberty/xmalloc.c. This function need's to match that's |
| 1471 | semantics. It never returns NULL. */ |
| 1472 | if (size == 0) |
| 1473 | size = 1; |
| 1474 | |
| 1475 | val = malloc (size); /* ARI: malloc */ |
| 1476 | if (val == NULL) |
| 1477 | nomem (size); |
| 1478 | |
| 1479 | return (val); |
| 1480 | } |
| 1481 | |
| 1482 | void * |
| 1483 | xzalloc (size_t size) |
| 1484 | { |
| 1485 | return xcalloc (1, size); |
| 1486 | } |
| 1487 | |
| 1488 | PTR /* ARI: PTR */ |
| 1489 | xrealloc (PTR ptr, size_t size) /* ARI: PTR */ |
| 1490 | { |
| 1491 | void *val; |
| 1492 | |
| 1493 | /* See libiberty/xmalloc.c. This function need's to match that's |
| 1494 | semantics. It never returns NULL. */ |
| 1495 | if (size == 0) |
| 1496 | size = 1; |
| 1497 | |
| 1498 | if (ptr != NULL) |
| 1499 | val = realloc (ptr, size); /* ARI: realloc */ |
| 1500 | else |
| 1501 | val = malloc (size); /* ARI: malloc */ |
| 1502 | if (val == NULL) |
| 1503 | nomem (size); |
| 1504 | |
| 1505 | return (val); |
| 1506 | } |
| 1507 | |
| 1508 | PTR /* ARI: PTR */ |
| 1509 | xcalloc (size_t number, size_t size) |
| 1510 | { |
| 1511 | void *mem; |
| 1512 | |
| 1513 | /* See libiberty/xmalloc.c. This function need's to match that's |
| 1514 | semantics. It never returns NULL. */ |
| 1515 | if (number == 0 || size == 0) |
| 1516 | { |
| 1517 | number = 1; |
| 1518 | size = 1; |
| 1519 | } |
| 1520 | |
| 1521 | mem = calloc (number, size); /* ARI: xcalloc */ |
| 1522 | if (mem == NULL) |
| 1523 | nomem (number * size); |
| 1524 | |
| 1525 | return mem; |
| 1526 | } |
| 1527 | |
| 1528 | void |
| 1529 | xfree (void *ptr) |
| 1530 | { |
| 1531 | if (ptr != NULL) |
| 1532 | free (ptr); /* ARI: free */ |
| 1533 | } |
| 1534 | \f |
| 1535 | |
| 1536 | /* Like asprintf/vasprintf but get an internal_error if the call |
| 1537 | fails. */ |
| 1538 | |
| 1539 | char * |
| 1540 | xstrprintf (const char *format, ...) |
| 1541 | { |
| 1542 | char *ret; |
| 1543 | va_list args; |
| 1544 | |
| 1545 | va_start (args, format); |
| 1546 | ret = xstrvprintf (format, args); |
| 1547 | va_end (args); |
| 1548 | return ret; |
| 1549 | } |
| 1550 | |
| 1551 | void |
| 1552 | xasprintf (char **ret, const char *format, ...) |
| 1553 | { |
| 1554 | va_list args; |
| 1555 | |
| 1556 | va_start (args, format); |
| 1557 | (*ret) = xstrvprintf (format, args); |
| 1558 | va_end (args); |
| 1559 | } |
| 1560 | |
| 1561 | void |
| 1562 | xvasprintf (char **ret, const char *format, va_list ap) |
| 1563 | { |
| 1564 | (*ret) = xstrvprintf (format, ap); |
| 1565 | } |
| 1566 | |
| 1567 | char * |
| 1568 | xstrvprintf (const char *format, va_list ap) |
| 1569 | { |
| 1570 | char *ret = NULL; |
| 1571 | int status = vasprintf (&ret, format, ap); |
| 1572 | |
| 1573 | /* NULL is returned when there was a memory allocation problem, or |
| 1574 | any other error (for instance, a bad format string). A negative |
| 1575 | status (the printed length) with a non-NULL buffer should never |
| 1576 | happen, but just to be sure. */ |
| 1577 | if (ret == NULL || status < 0) |
| 1578 | internal_error (__FILE__, __LINE__, _("vasprintf call failed")); |
| 1579 | return ret; |
| 1580 | } |
| 1581 | |
| 1582 | int |
| 1583 | xsnprintf (char *str, size_t size, const char *format, ...) |
| 1584 | { |
| 1585 | va_list args; |
| 1586 | int ret; |
| 1587 | |
| 1588 | va_start (args, format); |
| 1589 | ret = vsnprintf (str, size, format, args); |
| 1590 | gdb_assert (ret < size); |
| 1591 | va_end (args); |
| 1592 | |
| 1593 | return ret; |
| 1594 | } |
| 1595 | |
| 1596 | /* My replacement for the read system call. |
| 1597 | Used like `read' but keeps going if `read' returns too soon. */ |
| 1598 | |
| 1599 | int |
| 1600 | myread (int desc, char *addr, int len) |
| 1601 | { |
| 1602 | int val; |
| 1603 | int orglen = len; |
| 1604 | |
| 1605 | while (len > 0) |
| 1606 | { |
| 1607 | val = read (desc, addr, len); |
| 1608 | if (val < 0) |
| 1609 | return val; |
| 1610 | if (val == 0) |
| 1611 | return orglen - len; |
| 1612 | len -= val; |
| 1613 | addr += val; |
| 1614 | } |
| 1615 | return orglen; |
| 1616 | } |
| 1617 | \f |
| 1618 | /* Make a copy of the string at PTR with SIZE characters |
| 1619 | (and add a null character at the end in the copy). |
| 1620 | Uses malloc to get the space. Returns the address of the copy. */ |
| 1621 | |
| 1622 | char * |
| 1623 | savestring (const char *ptr, size_t size) |
| 1624 | { |
| 1625 | char *p = (char *) xmalloc (size + 1); |
| 1626 | |
| 1627 | memcpy (p, ptr, size); |
| 1628 | p[size] = 0; |
| 1629 | return p; |
| 1630 | } |
| 1631 | |
| 1632 | void |
| 1633 | print_spaces (int n, struct ui_file *file) |
| 1634 | { |
| 1635 | fputs_unfiltered (n_spaces (n), file); |
| 1636 | } |
| 1637 | |
| 1638 | /* Print a host address. */ |
| 1639 | |
| 1640 | void |
| 1641 | gdb_print_host_address (const void *addr, struct ui_file *stream) |
| 1642 | { |
| 1643 | fprintf_filtered (stream, "%s", host_address_to_string (addr)); |
| 1644 | } |
| 1645 | \f |
| 1646 | |
| 1647 | /* A cleanup function that calls regfree. */ |
| 1648 | |
| 1649 | static void |
| 1650 | do_regfree_cleanup (void *r) |
| 1651 | { |
| 1652 | regfree (r); |
| 1653 | } |
| 1654 | |
| 1655 | /* Create a new cleanup that frees the compiled regular expression R. */ |
| 1656 | |
| 1657 | struct cleanup * |
| 1658 | make_regfree_cleanup (regex_t *r) |
| 1659 | { |
| 1660 | return make_cleanup (do_regfree_cleanup, r); |
| 1661 | } |
| 1662 | |
| 1663 | /* Return an xmalloc'd error message resulting from a regular |
| 1664 | expression compilation failure. */ |
| 1665 | |
| 1666 | char * |
| 1667 | get_regcomp_error (int code, regex_t *rx) |
| 1668 | { |
| 1669 | size_t length = regerror (code, rx, NULL, 0); |
| 1670 | char *result = xmalloc (length); |
| 1671 | |
| 1672 | regerror (code, rx, result, length); |
| 1673 | return result; |
| 1674 | } |
| 1675 | |
| 1676 | \f |
| 1677 | |
| 1678 | /* This function supports the query, nquery, and yquery functions. |
| 1679 | Ask user a y-or-n question and return 0 if answer is no, 1 if |
| 1680 | answer is yes, or default the answer to the specified default |
| 1681 | (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a |
| 1682 | default answer, or '\0' for no default. |
| 1683 | CTLSTR is the control string and should end in "? ". It should |
| 1684 | not say how to answer, because we do that. |
| 1685 | ARGS are the arguments passed along with the CTLSTR argument to |
| 1686 | printf. */ |
| 1687 | |
| 1688 | static int ATTRIBUTE_PRINTF (1, 0) |
| 1689 | defaulted_query (const char *ctlstr, const char defchar, va_list args) |
| 1690 | { |
| 1691 | int answer; |
| 1692 | int ans2; |
| 1693 | int retval; |
| 1694 | int def_value; |
| 1695 | char def_answer, not_def_answer; |
| 1696 | char *y_string, *n_string, *question; |
| 1697 | |
| 1698 | /* Set up according to which answer is the default. */ |
| 1699 | if (defchar == '\0') |
| 1700 | { |
| 1701 | def_value = 1; |
| 1702 | def_answer = 'Y'; |
| 1703 | not_def_answer = 'N'; |
| 1704 | y_string = "y"; |
| 1705 | n_string = "n"; |
| 1706 | } |
| 1707 | else if (defchar == 'y') |
| 1708 | { |
| 1709 | def_value = 1; |
| 1710 | def_answer = 'Y'; |
| 1711 | not_def_answer = 'N'; |
| 1712 | y_string = "[y]"; |
| 1713 | n_string = "n"; |
| 1714 | } |
| 1715 | else |
| 1716 | { |
| 1717 | def_value = 0; |
| 1718 | def_answer = 'N'; |
| 1719 | not_def_answer = 'Y'; |
| 1720 | y_string = "y"; |
| 1721 | n_string = "[n]"; |
| 1722 | } |
| 1723 | |
| 1724 | /* Automatically answer the default value if the user did not want |
| 1725 | prompts or the command was issued with the server prefix. */ |
| 1726 | if (! caution || server_command) |
| 1727 | return def_value; |
| 1728 | |
| 1729 | /* If input isn't coming from the user directly, just say what |
| 1730 | question we're asking, and then answer the default automatically. This |
| 1731 | way, important error messages don't get lost when talking to GDB |
| 1732 | over a pipe. */ |
| 1733 | if (! input_from_terminal_p ()) |
| 1734 | { |
| 1735 | wrap_here (""); |
| 1736 | vfprintf_filtered (gdb_stdout, ctlstr, args); |
| 1737 | |
| 1738 | printf_filtered (_("(%s or %s) [answered %c; " |
| 1739 | "input not from terminal]\n"), |
| 1740 | y_string, n_string, def_answer); |
| 1741 | gdb_flush (gdb_stdout); |
| 1742 | |
| 1743 | return def_value; |
| 1744 | } |
| 1745 | |
| 1746 | if (deprecated_query_hook) |
| 1747 | { |
| 1748 | return deprecated_query_hook (ctlstr, args); |
| 1749 | } |
| 1750 | |
| 1751 | /* Format the question outside of the loop, to avoid reusing args. */ |
| 1752 | question = xstrvprintf (ctlstr, args); |
| 1753 | |
| 1754 | while (1) |
| 1755 | { |
| 1756 | wrap_here (""); /* Flush any buffered output. */ |
| 1757 | gdb_flush (gdb_stdout); |
| 1758 | |
| 1759 | if (annotation_level > 1) |
| 1760 | printf_filtered (("\n\032\032pre-query\n")); |
| 1761 | |
| 1762 | fputs_filtered (question, gdb_stdout); |
| 1763 | printf_filtered (_("(%s or %s) "), y_string, n_string); |
| 1764 | |
| 1765 | if (annotation_level > 1) |
| 1766 | printf_filtered (("\n\032\032query\n")); |
| 1767 | |
| 1768 | wrap_here (""); |
| 1769 | gdb_flush (gdb_stdout); |
| 1770 | |
| 1771 | answer = fgetc (stdin); |
| 1772 | |
| 1773 | /* We expect fgetc to block until a character is read. But |
| 1774 | this may not be the case if the terminal was opened with |
| 1775 | the NONBLOCK flag. In that case, if there is nothing to |
| 1776 | read on stdin, fgetc returns EOF, but also sets the error |
| 1777 | condition flag on stdin and errno to EAGAIN. With a true |
| 1778 | EOF, stdin's error condition flag is not set. |
| 1779 | |
| 1780 | A situation where this behavior was observed is a pseudo |
| 1781 | terminal on AIX. */ |
| 1782 | while (answer == EOF && ferror (stdin) && errno == EAGAIN) |
| 1783 | { |
| 1784 | /* Not a real EOF. Wait a little while and try again until |
| 1785 | we read something. */ |
| 1786 | clearerr (stdin); |
| 1787 | gdb_usleep (10000); |
| 1788 | answer = fgetc (stdin); |
| 1789 | } |
| 1790 | |
| 1791 | clearerr (stdin); /* in case of C-d */ |
| 1792 | if (answer == EOF) /* C-d */ |
| 1793 | { |
| 1794 | printf_filtered ("EOF [assumed %c]\n", def_answer); |
| 1795 | retval = def_value; |
| 1796 | break; |
| 1797 | } |
| 1798 | /* Eat rest of input line, to EOF or newline. */ |
| 1799 | if (answer != '\n') |
| 1800 | do |
| 1801 | { |
| 1802 | ans2 = fgetc (stdin); |
| 1803 | clearerr (stdin); |
| 1804 | } |
| 1805 | while (ans2 != EOF && ans2 != '\n' && ans2 != '\r'); |
| 1806 | |
| 1807 | if (answer >= 'a') |
| 1808 | answer -= 040; |
| 1809 | /* Check answer. For the non-default, the user must specify |
| 1810 | the non-default explicitly. */ |
| 1811 | if (answer == not_def_answer) |
| 1812 | { |
| 1813 | retval = !def_value; |
| 1814 | break; |
| 1815 | } |
| 1816 | /* Otherwise, if a default was specified, the user may either |
| 1817 | specify the required input or have it default by entering |
| 1818 | nothing. */ |
| 1819 | if (answer == def_answer |
| 1820 | || (defchar != '\0' && |
| 1821 | (answer == '\n' || answer == '\r' || answer == EOF))) |
| 1822 | { |
| 1823 | retval = def_value; |
| 1824 | break; |
| 1825 | } |
| 1826 | /* Invalid entries are not defaulted and require another selection. */ |
| 1827 | printf_filtered (_("Please answer %s or %s.\n"), |
| 1828 | y_string, n_string); |
| 1829 | } |
| 1830 | |
| 1831 | xfree (question); |
| 1832 | if (annotation_level > 1) |
| 1833 | printf_filtered (("\n\032\032post-query\n")); |
| 1834 | return retval; |
| 1835 | } |
| 1836 | \f |
| 1837 | |
| 1838 | /* Ask user a y-or-n question and return 0 if answer is no, 1 if |
| 1839 | answer is yes, or 0 if answer is defaulted. |
| 1840 | Takes three args which are given to printf to print the question. |
| 1841 | The first, a control string, should end in "? ". |
| 1842 | It should not say how to answer, because we do that. */ |
| 1843 | |
| 1844 | int |
| 1845 | nquery (const char *ctlstr, ...) |
| 1846 | { |
| 1847 | va_list args; |
| 1848 | int ret; |
| 1849 | |
| 1850 | va_start (args, ctlstr); |
| 1851 | ret = defaulted_query (ctlstr, 'n', args); |
| 1852 | va_end (args); |
| 1853 | return ret; |
| 1854 | } |
| 1855 | |
| 1856 | /* Ask user a y-or-n question and return 0 if answer is no, 1 if |
| 1857 | answer is yes, or 1 if answer is defaulted. |
| 1858 | Takes three args which are given to printf to print the question. |
| 1859 | The first, a control string, should end in "? ". |
| 1860 | It should not say how to answer, because we do that. */ |
| 1861 | |
| 1862 | int |
| 1863 | yquery (const char *ctlstr, ...) |
| 1864 | { |
| 1865 | va_list args; |
| 1866 | int ret; |
| 1867 | |
| 1868 | va_start (args, ctlstr); |
| 1869 | ret = defaulted_query (ctlstr, 'y', args); |
| 1870 | va_end (args); |
| 1871 | return ret; |
| 1872 | } |
| 1873 | |
| 1874 | /* Ask user a y-or-n question and return 1 iff answer is yes. |
| 1875 | Takes three args which are given to printf to print the question. |
| 1876 | The first, a control string, should end in "? ". |
| 1877 | It should not say how to answer, because we do that. */ |
| 1878 | |
| 1879 | int |
| 1880 | query (const char *ctlstr, ...) |
| 1881 | { |
| 1882 | va_list args; |
| 1883 | int ret; |
| 1884 | |
| 1885 | va_start (args, ctlstr); |
| 1886 | ret = defaulted_query (ctlstr, '\0', args); |
| 1887 | va_end (args); |
| 1888 | return ret; |
| 1889 | } |
| 1890 | |
| 1891 | /* A helper for parse_escape that converts a host character to a |
| 1892 | target character. C is the host character. If conversion is |
| 1893 | possible, then the target character is stored in *TARGET_C and the |
| 1894 | function returns 1. Otherwise, the function returns 0. */ |
| 1895 | |
| 1896 | static int |
| 1897 | host_char_to_target (struct gdbarch *gdbarch, int c, int *target_c) |
| 1898 | { |
| 1899 | struct obstack host_data; |
| 1900 | char the_char = c; |
| 1901 | struct cleanup *cleanups; |
| 1902 | int result = 0; |
| 1903 | |
| 1904 | obstack_init (&host_data); |
| 1905 | cleanups = make_cleanup_obstack_free (&host_data); |
| 1906 | |
| 1907 | convert_between_encodings (target_charset (gdbarch), host_charset (), |
| 1908 | &the_char, 1, 1, &host_data, translit_none); |
| 1909 | |
| 1910 | if (obstack_object_size (&host_data) == 1) |
| 1911 | { |
| 1912 | result = 1; |
| 1913 | *target_c = *(char *) obstack_base (&host_data); |
| 1914 | } |
| 1915 | |
| 1916 | do_cleanups (cleanups); |
| 1917 | return result; |
| 1918 | } |
| 1919 | |
| 1920 | /* Parse a C escape sequence. STRING_PTR points to a variable |
| 1921 | containing a pointer to the string to parse. That pointer |
| 1922 | should point to the character after the \. That pointer |
| 1923 | is updated past the characters we use. The value of the |
| 1924 | escape sequence is returned. |
| 1925 | |
| 1926 | A negative value means the sequence \ newline was seen, |
| 1927 | which is supposed to be equivalent to nothing at all. |
| 1928 | |
| 1929 | If \ is followed by a null character, we return a negative |
| 1930 | value and leave the string pointer pointing at the null character. |
| 1931 | |
| 1932 | If \ is followed by 000, we return 0 and leave the string pointer |
| 1933 | after the zeros. A value of 0 does not mean end of string. */ |
| 1934 | |
| 1935 | int |
| 1936 | parse_escape (struct gdbarch *gdbarch, char **string_ptr) |
| 1937 | { |
| 1938 | int target_char = -2; /* Initialize to avoid GCC warnings. */ |
| 1939 | int c = *(*string_ptr)++; |
| 1940 | |
| 1941 | switch (c) |
| 1942 | { |
| 1943 | case '\n': |
| 1944 | return -2; |
| 1945 | case 0: |
| 1946 | (*string_ptr)--; |
| 1947 | return 0; |
| 1948 | |
| 1949 | case '0': |
| 1950 | case '1': |
| 1951 | case '2': |
| 1952 | case '3': |
| 1953 | case '4': |
| 1954 | case '5': |
| 1955 | case '6': |
| 1956 | case '7': |
| 1957 | { |
| 1958 | int i = host_hex_value (c); |
| 1959 | int count = 0; |
| 1960 | while (++count < 3) |
| 1961 | { |
| 1962 | c = (**string_ptr); |
| 1963 | if (isdigit (c) && c != '8' && c != '9') |
| 1964 | { |
| 1965 | (*string_ptr)++; |
| 1966 | i *= 8; |
| 1967 | i += host_hex_value (c); |
| 1968 | } |
| 1969 | else |
| 1970 | { |
| 1971 | break; |
| 1972 | } |
| 1973 | } |
| 1974 | return i; |
| 1975 | } |
| 1976 | |
| 1977 | case 'a': |
| 1978 | c = '\a'; |
| 1979 | break; |
| 1980 | case 'b': |
| 1981 | c = '\b'; |
| 1982 | break; |
| 1983 | case 'f': |
| 1984 | c = '\f'; |
| 1985 | break; |
| 1986 | case 'n': |
| 1987 | c = '\n'; |
| 1988 | break; |
| 1989 | case 'r': |
| 1990 | c = '\r'; |
| 1991 | break; |
| 1992 | case 't': |
| 1993 | c = '\t'; |
| 1994 | break; |
| 1995 | case 'v': |
| 1996 | c = '\v'; |
| 1997 | break; |
| 1998 | |
| 1999 | default: |
| 2000 | break; |
| 2001 | } |
| 2002 | |
| 2003 | if (!host_char_to_target (gdbarch, c, &target_char)) |
| 2004 | error |
| 2005 | ("The escape sequence `\%c' is equivalent to plain `%c', which" |
| 2006 | " has no equivalent\n" "in the `%s' character set.", c, c, |
| 2007 | target_charset (gdbarch)); |
| 2008 | return target_char; |
| 2009 | } |
| 2010 | \f |
| 2011 | /* Print the character C on STREAM as part of the contents of a literal |
| 2012 | string whose delimiter is QUOTER. Note that this routine should only |
| 2013 | be call for printing things which are independent of the language |
| 2014 | of the program being debugged. */ |
| 2015 | |
| 2016 | static void |
| 2017 | printchar (int c, void (*do_fputs) (const char *, struct ui_file *), |
| 2018 | void (*do_fprintf) (struct ui_file *, const char *, ...) |
| 2019 | ATTRIBUTE_FPTR_PRINTF_2, struct ui_file *stream, int quoter) |
| 2020 | { |
| 2021 | c &= 0xFF; /* Avoid sign bit follies */ |
| 2022 | |
| 2023 | if (c < 0x20 || /* Low control chars */ |
| 2024 | (c >= 0x7F && c < 0xA0) || /* DEL, High controls */ |
| 2025 | (sevenbit_strings && c >= 0x80)) |
| 2026 | { /* high order bit set */ |
| 2027 | switch (c) |
| 2028 | { |
| 2029 | case '\n': |
| 2030 | do_fputs ("\\n", stream); |
| 2031 | break; |
| 2032 | case '\b': |
| 2033 | do_fputs ("\\b", stream); |
| 2034 | break; |
| 2035 | case '\t': |
| 2036 | do_fputs ("\\t", stream); |
| 2037 | break; |
| 2038 | case '\f': |
| 2039 | do_fputs ("\\f", stream); |
| 2040 | break; |
| 2041 | case '\r': |
| 2042 | do_fputs ("\\r", stream); |
| 2043 | break; |
| 2044 | case '\033': |
| 2045 | do_fputs ("\\e", stream); |
| 2046 | break; |
| 2047 | case '\007': |
| 2048 | do_fputs ("\\a", stream); |
| 2049 | break; |
| 2050 | default: |
| 2051 | do_fprintf (stream, "\\%.3o", (unsigned int) c); |
| 2052 | break; |
| 2053 | } |
| 2054 | } |
| 2055 | else |
| 2056 | { |
| 2057 | if (c == '\\' || c == quoter) |
| 2058 | do_fputs ("\\", stream); |
| 2059 | do_fprintf (stream, "%c", c); |
| 2060 | } |
| 2061 | } |
| 2062 | |
| 2063 | /* Print the character C on STREAM as part of the contents of a |
| 2064 | literal string whose delimiter is QUOTER. Note that these routines |
| 2065 | should only be call for printing things which are independent of |
| 2066 | the language of the program being debugged. */ |
| 2067 | |
| 2068 | void |
| 2069 | fputstr_filtered (const char *str, int quoter, struct ui_file *stream) |
| 2070 | { |
| 2071 | while (*str) |
| 2072 | printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter); |
| 2073 | } |
| 2074 | |
| 2075 | void |
| 2076 | fputstr_unfiltered (const char *str, int quoter, struct ui_file *stream) |
| 2077 | { |
| 2078 | while (*str) |
| 2079 | printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter); |
| 2080 | } |
| 2081 | |
| 2082 | void |
| 2083 | fputstrn_filtered (const char *str, int n, int quoter, |
| 2084 | struct ui_file *stream) |
| 2085 | { |
| 2086 | int i; |
| 2087 | |
| 2088 | for (i = 0; i < n; i++) |
| 2089 | printchar (str[i], fputs_filtered, fprintf_filtered, stream, quoter); |
| 2090 | } |
| 2091 | |
| 2092 | void |
| 2093 | fputstrn_unfiltered (const char *str, int n, int quoter, |
| 2094 | struct ui_file *stream) |
| 2095 | { |
| 2096 | int i; |
| 2097 | |
| 2098 | for (i = 0; i < n; i++) |
| 2099 | printchar (str[i], fputs_unfiltered, fprintf_unfiltered, stream, quoter); |
| 2100 | } |
| 2101 | \f |
| 2102 | |
| 2103 | /* Number of lines per page or UINT_MAX if paging is disabled. */ |
| 2104 | static unsigned int lines_per_page; |
| 2105 | static void |
| 2106 | show_lines_per_page (struct ui_file *file, int from_tty, |
| 2107 | struct cmd_list_element *c, const char *value) |
| 2108 | { |
| 2109 | fprintf_filtered (file, |
| 2110 | _("Number of lines gdb thinks are in a page is %s.\n"), |
| 2111 | value); |
| 2112 | } |
| 2113 | |
| 2114 | /* Number of chars per line or UINT_MAX if line folding is disabled. */ |
| 2115 | static unsigned int chars_per_line; |
| 2116 | static void |
| 2117 | show_chars_per_line (struct ui_file *file, int from_tty, |
| 2118 | struct cmd_list_element *c, const char *value) |
| 2119 | { |
| 2120 | fprintf_filtered (file, |
| 2121 | _("Number of characters gdb thinks " |
| 2122 | "are in a line is %s.\n"), |
| 2123 | value); |
| 2124 | } |
| 2125 | |
| 2126 | /* Current count of lines printed on this page, chars on this line. */ |
| 2127 | static unsigned int lines_printed, chars_printed; |
| 2128 | |
| 2129 | /* Buffer and start column of buffered text, for doing smarter word- |
| 2130 | wrapping. When someone calls wrap_here(), we start buffering output |
| 2131 | that comes through fputs_filtered(). If we see a newline, we just |
| 2132 | spit it out and forget about the wrap_here(). If we see another |
| 2133 | wrap_here(), we spit it out and remember the newer one. If we see |
| 2134 | the end of the line, we spit out a newline, the indent, and then |
| 2135 | the buffered output. */ |
| 2136 | |
| 2137 | /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which |
| 2138 | are waiting to be output (they have already been counted in chars_printed). |
| 2139 | When wrap_buffer[0] is null, the buffer is empty. */ |
| 2140 | static char *wrap_buffer; |
| 2141 | |
| 2142 | /* Pointer in wrap_buffer to the next character to fill. */ |
| 2143 | static char *wrap_pointer; |
| 2144 | |
| 2145 | /* String to indent by if the wrap occurs. Must not be NULL if wrap_column |
| 2146 | is non-zero. */ |
| 2147 | static char *wrap_indent; |
| 2148 | |
| 2149 | /* Column number on the screen where wrap_buffer begins, or 0 if wrapping |
| 2150 | is not in effect. */ |
| 2151 | static int wrap_column; |
| 2152 | \f |
| 2153 | |
| 2154 | /* Inialize the number of lines per page and chars per line. */ |
| 2155 | |
| 2156 | void |
| 2157 | init_page_info (void) |
| 2158 | { |
| 2159 | if (batch_flag) |
| 2160 | { |
| 2161 | lines_per_page = UINT_MAX; |
| 2162 | chars_per_line = UINT_MAX; |
| 2163 | } |
| 2164 | else |
| 2165 | #if defined(TUI) |
| 2166 | if (!tui_get_command_dimension (&chars_per_line, &lines_per_page)) |
| 2167 | #endif |
| 2168 | { |
| 2169 | int rows, cols; |
| 2170 | |
| 2171 | #if defined(__GO32__) |
| 2172 | rows = ScreenRows (); |
| 2173 | cols = ScreenCols (); |
| 2174 | lines_per_page = rows; |
| 2175 | chars_per_line = cols; |
| 2176 | #else |
| 2177 | /* Make sure Readline has initialized its terminal settings. */ |
| 2178 | rl_reset_terminal (NULL); |
| 2179 | |
| 2180 | /* Get the screen size from Readline. */ |
| 2181 | rl_get_screen_size (&rows, &cols); |
| 2182 | lines_per_page = rows; |
| 2183 | chars_per_line = cols; |
| 2184 | |
| 2185 | /* Readline should have fetched the termcap entry for us. */ |
| 2186 | if (tgetnum ("li") < 0 || getenv ("EMACS")) |
| 2187 | { |
| 2188 | /* The number of lines per page is not mentioned in the |
| 2189 | terminal description. This probably means that paging is |
| 2190 | not useful (e.g. emacs shell window), so disable paging. */ |
| 2191 | lines_per_page = UINT_MAX; |
| 2192 | } |
| 2193 | |
| 2194 | /* FIXME: Get rid of this junk. */ |
| 2195 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) |
| 2196 | SIGWINCH_HANDLER (SIGWINCH); |
| 2197 | #endif |
| 2198 | |
| 2199 | /* If the output is not a terminal, don't paginate it. */ |
| 2200 | if (!ui_file_isatty (gdb_stdout)) |
| 2201 | lines_per_page = UINT_MAX; |
| 2202 | #endif |
| 2203 | } |
| 2204 | |
| 2205 | set_screen_size (); |
| 2206 | set_width (); |
| 2207 | } |
| 2208 | |
| 2209 | /* Helper for make_cleanup_restore_page_info. */ |
| 2210 | |
| 2211 | static void |
| 2212 | do_restore_page_info_cleanup (void *arg) |
| 2213 | { |
| 2214 | set_screen_size (); |
| 2215 | set_width (); |
| 2216 | } |
| 2217 | |
| 2218 | /* Provide cleanup for restoring the terminal size. */ |
| 2219 | |
| 2220 | struct cleanup * |
| 2221 | make_cleanup_restore_page_info (void) |
| 2222 | { |
| 2223 | struct cleanup *back_to; |
| 2224 | |
| 2225 | back_to = make_cleanup (do_restore_page_info_cleanup, NULL); |
| 2226 | make_cleanup_restore_uinteger (&lines_per_page); |
| 2227 | make_cleanup_restore_uinteger (&chars_per_line); |
| 2228 | |
| 2229 | return back_to; |
| 2230 | } |
| 2231 | |
| 2232 | /* Temporarily set BATCH_FLAG and the associated unlimited terminal size. |
| 2233 | Provide cleanup for restoring the original state. */ |
| 2234 | |
| 2235 | struct cleanup * |
| 2236 | set_batch_flag_and_make_cleanup_restore_page_info (void) |
| 2237 | { |
| 2238 | struct cleanup *back_to = make_cleanup_restore_page_info (); |
| 2239 | |
| 2240 | make_cleanup_restore_integer (&batch_flag); |
| 2241 | batch_flag = 1; |
| 2242 | init_page_info (); |
| 2243 | |
| 2244 | return back_to; |
| 2245 | } |
| 2246 | |
| 2247 | /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */ |
| 2248 | |
| 2249 | static void |
| 2250 | set_screen_size (void) |
| 2251 | { |
| 2252 | int rows = lines_per_page; |
| 2253 | int cols = chars_per_line; |
| 2254 | |
| 2255 | if (rows <= 0) |
| 2256 | rows = INT_MAX; |
| 2257 | |
| 2258 | if (cols <= 0) |
| 2259 | cols = INT_MAX; |
| 2260 | |
| 2261 | /* Update Readline's idea of the terminal size. */ |
| 2262 | rl_set_screen_size (rows, cols); |
| 2263 | } |
| 2264 | |
| 2265 | /* Reinitialize WRAP_BUFFER according to the current value of |
| 2266 | CHARS_PER_LINE. */ |
| 2267 | |
| 2268 | static void |
| 2269 | set_width (void) |
| 2270 | { |
| 2271 | if (chars_per_line == 0) |
| 2272 | init_page_info (); |
| 2273 | |
| 2274 | if (!wrap_buffer) |
| 2275 | { |
| 2276 | wrap_buffer = (char *) xmalloc (chars_per_line + 2); |
| 2277 | wrap_buffer[0] = '\0'; |
| 2278 | } |
| 2279 | else |
| 2280 | wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2); |
| 2281 | wrap_pointer = wrap_buffer; /* Start it at the beginning. */ |
| 2282 | } |
| 2283 | |
| 2284 | static void |
| 2285 | set_width_command (char *args, int from_tty, struct cmd_list_element *c) |
| 2286 | { |
| 2287 | set_screen_size (); |
| 2288 | set_width (); |
| 2289 | } |
| 2290 | |
| 2291 | static void |
| 2292 | set_height_command (char *args, int from_tty, struct cmd_list_element *c) |
| 2293 | { |
| 2294 | set_screen_size (); |
| 2295 | } |
| 2296 | |
| 2297 | /* Wait, so the user can read what's on the screen. Prompt the user |
| 2298 | to continue by pressing RETURN. */ |
| 2299 | |
| 2300 | static void |
| 2301 | prompt_for_continue (void) |
| 2302 | { |
| 2303 | char *ignore; |
| 2304 | char cont_prompt[120]; |
| 2305 | |
| 2306 | if (annotation_level > 1) |
| 2307 | printf_unfiltered (("\n\032\032pre-prompt-for-continue\n")); |
| 2308 | |
| 2309 | strcpy (cont_prompt, |
| 2310 | "---Type <return> to continue, or q <return> to quit---"); |
| 2311 | if (annotation_level > 1) |
| 2312 | strcat (cont_prompt, "\n\032\032prompt-for-continue\n"); |
| 2313 | |
| 2314 | /* We must do this *before* we call gdb_readline, else it will eventually |
| 2315 | call us -- thinking that we're trying to print beyond the end of the |
| 2316 | screen. */ |
| 2317 | reinitialize_more_filter (); |
| 2318 | |
| 2319 | immediate_quit++; |
| 2320 | /* On a real operating system, the user can quit with SIGINT. |
| 2321 | But not on GO32. |
| 2322 | |
| 2323 | 'q' is provided on all systems so users don't have to change habits |
| 2324 | from system to system, and because telling them what to do in |
| 2325 | the prompt is more user-friendly than expecting them to think of |
| 2326 | SIGINT. */ |
| 2327 | /* Call readline, not gdb_readline, because GO32 readline handles control-C |
| 2328 | whereas control-C to gdb_readline will cause the user to get dumped |
| 2329 | out to DOS. */ |
| 2330 | ignore = gdb_readline_wrapper (cont_prompt); |
| 2331 | |
| 2332 | if (annotation_level > 1) |
| 2333 | printf_unfiltered (("\n\032\032post-prompt-for-continue\n")); |
| 2334 | |
| 2335 | if (ignore) |
| 2336 | { |
| 2337 | char *p = ignore; |
| 2338 | |
| 2339 | while (*p == ' ' || *p == '\t') |
| 2340 | ++p; |
| 2341 | if (p[0] == 'q') |
| 2342 | async_request_quit (0); |
| 2343 | xfree (ignore); |
| 2344 | } |
| 2345 | immediate_quit--; |
| 2346 | |
| 2347 | /* Now we have to do this again, so that GDB will know that it doesn't |
| 2348 | need to save the ---Type <return>--- line at the top of the screen. */ |
| 2349 | reinitialize_more_filter (); |
| 2350 | |
| 2351 | dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */ |
| 2352 | } |
| 2353 | |
| 2354 | /* Reinitialize filter; ie. tell it to reset to original values. */ |
| 2355 | |
| 2356 | void |
| 2357 | reinitialize_more_filter (void) |
| 2358 | { |
| 2359 | lines_printed = 0; |
| 2360 | chars_printed = 0; |
| 2361 | } |
| 2362 | |
| 2363 | /* Indicate that if the next sequence of characters overflows the line, |
| 2364 | a newline should be inserted here rather than when it hits the end. |
| 2365 | If INDENT is non-null, it is a string to be printed to indent the |
| 2366 | wrapped part on the next line. INDENT must remain accessible until |
| 2367 | the next call to wrap_here() or until a newline is printed through |
| 2368 | fputs_filtered(). |
| 2369 | |
| 2370 | If the line is already overfull, we immediately print a newline and |
| 2371 | the indentation, and disable further wrapping. |
| 2372 | |
| 2373 | If we don't know the width of lines, but we know the page height, |
| 2374 | we must not wrap words, but should still keep track of newlines |
| 2375 | that were explicitly printed. |
| 2376 | |
| 2377 | INDENT should not contain tabs, as that will mess up the char count |
| 2378 | on the next line. FIXME. |
| 2379 | |
| 2380 | This routine is guaranteed to force out any output which has been |
| 2381 | squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be |
| 2382 | used to force out output from the wrap_buffer. */ |
| 2383 | |
| 2384 | void |
| 2385 | wrap_here (char *indent) |
| 2386 | { |
| 2387 | /* This should have been allocated, but be paranoid anyway. */ |
| 2388 | if (!wrap_buffer) |
| 2389 | internal_error (__FILE__, __LINE__, |
| 2390 | _("failed internal consistency check")); |
| 2391 | |
| 2392 | if (wrap_buffer[0]) |
| 2393 | { |
| 2394 | *wrap_pointer = '\0'; |
| 2395 | fputs_unfiltered (wrap_buffer, gdb_stdout); |
| 2396 | } |
| 2397 | wrap_pointer = wrap_buffer; |
| 2398 | wrap_buffer[0] = '\0'; |
| 2399 | if (chars_per_line == UINT_MAX) /* No line overflow checking. */ |
| 2400 | { |
| 2401 | wrap_column = 0; |
| 2402 | } |
| 2403 | else if (chars_printed >= chars_per_line) |
| 2404 | { |
| 2405 | puts_filtered ("\n"); |
| 2406 | if (indent != NULL) |
| 2407 | puts_filtered (indent); |
| 2408 | wrap_column = 0; |
| 2409 | } |
| 2410 | else |
| 2411 | { |
| 2412 | wrap_column = chars_printed; |
| 2413 | if (indent == NULL) |
| 2414 | wrap_indent = ""; |
| 2415 | else |
| 2416 | wrap_indent = indent; |
| 2417 | } |
| 2418 | } |
| 2419 | |
| 2420 | /* Print input string to gdb_stdout, filtered, with wrap, |
| 2421 | arranging strings in columns of n chars. String can be |
| 2422 | right or left justified in the column. Never prints |
| 2423 | trailing spaces. String should never be longer than |
| 2424 | width. FIXME: this could be useful for the EXAMINE |
| 2425 | command, which currently doesn't tabulate very well. */ |
| 2426 | |
| 2427 | void |
| 2428 | puts_filtered_tabular (char *string, int width, int right) |
| 2429 | { |
| 2430 | int spaces = 0; |
| 2431 | int stringlen; |
| 2432 | char *spacebuf; |
| 2433 | |
| 2434 | gdb_assert (chars_per_line > 0); |
| 2435 | if (chars_per_line == UINT_MAX) |
| 2436 | { |
| 2437 | fputs_filtered (string, gdb_stdout); |
| 2438 | fputs_filtered ("\n", gdb_stdout); |
| 2439 | return; |
| 2440 | } |
| 2441 | |
| 2442 | if (((chars_printed - 1) / width + 2) * width >= chars_per_line) |
| 2443 | fputs_filtered ("\n", gdb_stdout); |
| 2444 | |
| 2445 | if (width >= chars_per_line) |
| 2446 | width = chars_per_line - 1; |
| 2447 | |
| 2448 | stringlen = strlen (string); |
| 2449 | |
| 2450 | if (chars_printed > 0) |
| 2451 | spaces = width - (chars_printed - 1) % width - 1; |
| 2452 | if (right) |
| 2453 | spaces += width - stringlen; |
| 2454 | |
| 2455 | spacebuf = alloca (spaces + 1); |
| 2456 | spacebuf[spaces] = '\0'; |
| 2457 | while (spaces--) |
| 2458 | spacebuf[spaces] = ' '; |
| 2459 | |
| 2460 | fputs_filtered (spacebuf, gdb_stdout); |
| 2461 | fputs_filtered (string, gdb_stdout); |
| 2462 | } |
| 2463 | |
| 2464 | |
| 2465 | /* Ensure that whatever gets printed next, using the filtered output |
| 2466 | commands, starts at the beginning of the line. I.e. if there is |
| 2467 | any pending output for the current line, flush it and start a new |
| 2468 | line. Otherwise do nothing. */ |
| 2469 | |
| 2470 | void |
| 2471 | begin_line (void) |
| 2472 | { |
| 2473 | if (chars_printed > 0) |
| 2474 | { |
| 2475 | puts_filtered ("\n"); |
| 2476 | } |
| 2477 | } |
| 2478 | |
| 2479 | |
| 2480 | /* Like fputs but if FILTER is true, pause after every screenful. |
| 2481 | |
| 2482 | Regardless of FILTER can wrap at points other than the final |
| 2483 | character of a line. |
| 2484 | |
| 2485 | Unlike fputs, fputs_maybe_filtered does not return a value. |
| 2486 | It is OK for LINEBUFFER to be NULL, in which case just don't print |
| 2487 | anything. |
| 2488 | |
| 2489 | Note that a longjmp to top level may occur in this routine (only if |
| 2490 | FILTER is true) (since prompt_for_continue may do so) so this |
| 2491 | routine should not be called when cleanups are not in place. */ |
| 2492 | |
| 2493 | static void |
| 2494 | fputs_maybe_filtered (const char *linebuffer, struct ui_file *stream, |
| 2495 | int filter) |
| 2496 | { |
| 2497 | const char *lineptr; |
| 2498 | |
| 2499 | if (linebuffer == 0) |
| 2500 | return; |
| 2501 | |
| 2502 | /* Don't do any filtering if it is disabled. */ |
| 2503 | if (stream != gdb_stdout |
| 2504 | || ! pagination_enabled |
| 2505 | || ! input_from_terminal_p () |
| 2506 | || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX) |
| 2507 | || top_level_interpreter () == NULL |
| 2508 | || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ()))) |
| 2509 | { |
| 2510 | fputs_unfiltered (linebuffer, stream); |
| 2511 | return; |
| 2512 | } |
| 2513 | |
| 2514 | /* Go through and output each character. Show line extension |
| 2515 | when this is necessary; prompt user for new page when this is |
| 2516 | necessary. */ |
| 2517 | |
| 2518 | lineptr = linebuffer; |
| 2519 | while (*lineptr) |
| 2520 | { |
| 2521 | /* Possible new page. */ |
| 2522 | if (filter && (lines_printed >= lines_per_page - 1)) |
| 2523 | prompt_for_continue (); |
| 2524 | |
| 2525 | while (*lineptr && *lineptr != '\n') |
| 2526 | { |
| 2527 | /* Print a single line. */ |
| 2528 | if (*lineptr == '\t') |
| 2529 | { |
| 2530 | if (wrap_column) |
| 2531 | *wrap_pointer++ = '\t'; |
| 2532 | else |
| 2533 | fputc_unfiltered ('\t', stream); |
| 2534 | /* Shifting right by 3 produces the number of tab stops |
| 2535 | we have already passed, and then adding one and |
| 2536 | shifting left 3 advances to the next tab stop. */ |
| 2537 | chars_printed = ((chars_printed >> 3) + 1) << 3; |
| 2538 | lineptr++; |
| 2539 | } |
| 2540 | else |
| 2541 | { |
| 2542 | if (wrap_column) |
| 2543 | *wrap_pointer++ = *lineptr; |
| 2544 | else |
| 2545 | fputc_unfiltered (*lineptr, stream); |
| 2546 | chars_printed++; |
| 2547 | lineptr++; |
| 2548 | } |
| 2549 | |
| 2550 | if (chars_printed >= chars_per_line) |
| 2551 | { |
| 2552 | unsigned int save_chars = chars_printed; |
| 2553 | |
| 2554 | chars_printed = 0; |
| 2555 | lines_printed++; |
| 2556 | /* If we aren't actually wrapping, don't output newline -- |
| 2557 | if chars_per_line is right, we probably just overflowed |
| 2558 | anyway; if it's wrong, let us keep going. */ |
| 2559 | if (wrap_column) |
| 2560 | fputc_unfiltered ('\n', stream); |
| 2561 | |
| 2562 | /* Possible new page. */ |
| 2563 | if (lines_printed >= lines_per_page - 1) |
| 2564 | prompt_for_continue (); |
| 2565 | |
| 2566 | /* Now output indentation and wrapped string. */ |
| 2567 | if (wrap_column) |
| 2568 | { |
| 2569 | fputs_unfiltered (wrap_indent, stream); |
| 2570 | *wrap_pointer = '\0'; /* Null-terminate saved stuff, */ |
| 2571 | fputs_unfiltered (wrap_buffer, stream); /* and eject it. */ |
| 2572 | /* FIXME, this strlen is what prevents wrap_indent from |
| 2573 | containing tabs. However, if we recurse to print it |
| 2574 | and count its chars, we risk trouble if wrap_indent is |
| 2575 | longer than (the user settable) chars_per_line. |
| 2576 | Note also that this can set chars_printed > chars_per_line |
| 2577 | if we are printing a long string. */ |
| 2578 | chars_printed = strlen (wrap_indent) |
| 2579 | + (save_chars - wrap_column); |
| 2580 | wrap_pointer = wrap_buffer; /* Reset buffer */ |
| 2581 | wrap_buffer[0] = '\0'; |
| 2582 | wrap_column = 0; /* And disable fancy wrap */ |
| 2583 | } |
| 2584 | } |
| 2585 | } |
| 2586 | |
| 2587 | if (*lineptr == '\n') |
| 2588 | { |
| 2589 | chars_printed = 0; |
| 2590 | wrap_here ((char *) 0); /* Spit out chars, cancel |
| 2591 | further wraps. */ |
| 2592 | lines_printed++; |
| 2593 | fputc_unfiltered ('\n', stream); |
| 2594 | lineptr++; |
| 2595 | } |
| 2596 | } |
| 2597 | } |
| 2598 | |
| 2599 | void |
| 2600 | fputs_filtered (const char *linebuffer, struct ui_file *stream) |
| 2601 | { |
| 2602 | fputs_maybe_filtered (linebuffer, stream, 1); |
| 2603 | } |
| 2604 | |
| 2605 | int |
| 2606 | putchar_unfiltered (int c) |
| 2607 | { |
| 2608 | char buf = c; |
| 2609 | |
| 2610 | ui_file_write (gdb_stdout, &buf, 1); |
| 2611 | return c; |
| 2612 | } |
| 2613 | |
| 2614 | /* Write character C to gdb_stdout using GDB's paging mechanism and return C. |
| 2615 | May return nonlocally. */ |
| 2616 | |
| 2617 | int |
| 2618 | putchar_filtered (int c) |
| 2619 | { |
| 2620 | return fputc_filtered (c, gdb_stdout); |
| 2621 | } |
| 2622 | |
| 2623 | int |
| 2624 | fputc_unfiltered (int c, struct ui_file *stream) |
| 2625 | { |
| 2626 | char buf = c; |
| 2627 | |
| 2628 | ui_file_write (stream, &buf, 1); |
| 2629 | return c; |
| 2630 | } |
| 2631 | |
| 2632 | int |
| 2633 | fputc_filtered (int c, struct ui_file *stream) |
| 2634 | { |
| 2635 | char buf[2]; |
| 2636 | |
| 2637 | buf[0] = c; |
| 2638 | buf[1] = 0; |
| 2639 | fputs_filtered (buf, stream); |
| 2640 | return c; |
| 2641 | } |
| 2642 | |
| 2643 | /* puts_debug is like fputs_unfiltered, except it prints special |
| 2644 | characters in printable fashion. */ |
| 2645 | |
| 2646 | void |
| 2647 | puts_debug (char *prefix, char *string, char *suffix) |
| 2648 | { |
| 2649 | int ch; |
| 2650 | |
| 2651 | /* Print prefix and suffix after each line. */ |
| 2652 | static int new_line = 1; |
| 2653 | static int return_p = 0; |
| 2654 | static char *prev_prefix = ""; |
| 2655 | static char *prev_suffix = ""; |
| 2656 | |
| 2657 | if (*string == '\n') |
| 2658 | return_p = 0; |
| 2659 | |
| 2660 | /* If the prefix is changing, print the previous suffix, a new line, |
| 2661 | and the new prefix. */ |
| 2662 | if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line) |
| 2663 | { |
| 2664 | fputs_unfiltered (prev_suffix, gdb_stdlog); |
| 2665 | fputs_unfiltered ("\n", gdb_stdlog); |
| 2666 | fputs_unfiltered (prefix, gdb_stdlog); |
| 2667 | } |
| 2668 | |
| 2669 | /* Print prefix if we printed a newline during the previous call. */ |
| 2670 | if (new_line) |
| 2671 | { |
| 2672 | new_line = 0; |
| 2673 | fputs_unfiltered (prefix, gdb_stdlog); |
| 2674 | } |
| 2675 | |
| 2676 | prev_prefix = prefix; |
| 2677 | prev_suffix = suffix; |
| 2678 | |
| 2679 | /* Output characters in a printable format. */ |
| 2680 | while ((ch = *string++) != '\0') |
| 2681 | { |
| 2682 | switch (ch) |
| 2683 | { |
| 2684 | default: |
| 2685 | if (isprint (ch)) |
| 2686 | fputc_unfiltered (ch, gdb_stdlog); |
| 2687 | |
| 2688 | else |
| 2689 | fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff); |
| 2690 | break; |
| 2691 | |
| 2692 | case '\\': |
| 2693 | fputs_unfiltered ("\\\\", gdb_stdlog); |
| 2694 | break; |
| 2695 | case '\b': |
| 2696 | fputs_unfiltered ("\\b", gdb_stdlog); |
| 2697 | break; |
| 2698 | case '\f': |
| 2699 | fputs_unfiltered ("\\f", gdb_stdlog); |
| 2700 | break; |
| 2701 | case '\n': |
| 2702 | new_line = 1; |
| 2703 | fputs_unfiltered ("\\n", gdb_stdlog); |
| 2704 | break; |
| 2705 | case '\r': |
| 2706 | fputs_unfiltered ("\\r", gdb_stdlog); |
| 2707 | break; |
| 2708 | case '\t': |
| 2709 | fputs_unfiltered ("\\t", gdb_stdlog); |
| 2710 | break; |
| 2711 | case '\v': |
| 2712 | fputs_unfiltered ("\\v", gdb_stdlog); |
| 2713 | break; |
| 2714 | } |
| 2715 | |
| 2716 | return_p = ch == '\r'; |
| 2717 | } |
| 2718 | |
| 2719 | /* Print suffix if we printed a newline. */ |
| 2720 | if (new_line) |
| 2721 | { |
| 2722 | fputs_unfiltered (suffix, gdb_stdlog); |
| 2723 | fputs_unfiltered ("\n", gdb_stdlog); |
| 2724 | } |
| 2725 | } |
| 2726 | |
| 2727 | |
| 2728 | /* Print a variable number of ARGS using format FORMAT. If this |
| 2729 | information is going to put the amount written (since the last call |
| 2730 | to REINITIALIZE_MORE_FILTER or the last page break) over the page size, |
| 2731 | call prompt_for_continue to get the users permision to continue. |
| 2732 | |
| 2733 | Unlike fprintf, this function does not return a value. |
| 2734 | |
| 2735 | We implement three variants, vfprintf (takes a vararg list and stream), |
| 2736 | fprintf (takes a stream to write on), and printf (the usual). |
| 2737 | |
| 2738 | Note also that a longjmp to top level may occur in this routine |
| 2739 | (since prompt_for_continue may do so) so this routine should not be |
| 2740 | called when cleanups are not in place. */ |
| 2741 | |
| 2742 | static void |
| 2743 | vfprintf_maybe_filtered (struct ui_file *stream, const char *format, |
| 2744 | va_list args, int filter) |
| 2745 | { |
| 2746 | char *linebuffer; |
| 2747 | struct cleanup *old_cleanups; |
| 2748 | |
| 2749 | linebuffer = xstrvprintf (format, args); |
| 2750 | old_cleanups = make_cleanup (xfree, linebuffer); |
| 2751 | fputs_maybe_filtered (linebuffer, stream, filter); |
| 2752 | do_cleanups (old_cleanups); |
| 2753 | } |
| 2754 | |
| 2755 | |
| 2756 | void |
| 2757 | vfprintf_filtered (struct ui_file *stream, const char *format, va_list args) |
| 2758 | { |
| 2759 | vfprintf_maybe_filtered (stream, format, args, 1); |
| 2760 | } |
| 2761 | |
| 2762 | void |
| 2763 | vfprintf_unfiltered (struct ui_file *stream, const char *format, va_list args) |
| 2764 | { |
| 2765 | char *linebuffer; |
| 2766 | struct cleanup *old_cleanups; |
| 2767 | |
| 2768 | linebuffer = xstrvprintf (format, args); |
| 2769 | old_cleanups = make_cleanup (xfree, linebuffer); |
| 2770 | if (debug_timestamp && stream == gdb_stdlog) |
| 2771 | { |
| 2772 | struct timeval tm; |
| 2773 | char *timestamp; |
| 2774 | int len, need_nl; |
| 2775 | |
| 2776 | gettimeofday (&tm, NULL); |
| 2777 | |
| 2778 | len = strlen (linebuffer); |
| 2779 | need_nl = (len > 0 && linebuffer[len - 1] != '\n'); |
| 2780 | |
| 2781 | timestamp = xstrprintf ("%ld:%ld %s%s", |
| 2782 | (long) tm.tv_sec, (long) tm.tv_usec, |
| 2783 | linebuffer, |
| 2784 | need_nl ? "\n": ""); |
| 2785 | make_cleanup (xfree, timestamp); |
| 2786 | fputs_unfiltered (timestamp, stream); |
| 2787 | } |
| 2788 | else |
| 2789 | fputs_unfiltered (linebuffer, stream); |
| 2790 | do_cleanups (old_cleanups); |
| 2791 | } |
| 2792 | |
| 2793 | void |
| 2794 | vprintf_filtered (const char *format, va_list args) |
| 2795 | { |
| 2796 | vfprintf_maybe_filtered (gdb_stdout, format, args, 1); |
| 2797 | } |
| 2798 | |
| 2799 | void |
| 2800 | vprintf_unfiltered (const char *format, va_list args) |
| 2801 | { |
| 2802 | vfprintf_unfiltered (gdb_stdout, format, args); |
| 2803 | } |
| 2804 | |
| 2805 | void |
| 2806 | fprintf_filtered (struct ui_file *stream, const char *format, ...) |
| 2807 | { |
| 2808 | va_list args; |
| 2809 | |
| 2810 | va_start (args, format); |
| 2811 | vfprintf_filtered (stream, format, args); |
| 2812 | va_end (args); |
| 2813 | } |
| 2814 | |
| 2815 | void |
| 2816 | fprintf_unfiltered (struct ui_file *stream, const char *format, ...) |
| 2817 | { |
| 2818 | va_list args; |
| 2819 | |
| 2820 | va_start (args, format); |
| 2821 | vfprintf_unfiltered (stream, format, args); |
| 2822 | va_end (args); |
| 2823 | } |
| 2824 | |
| 2825 | /* Like fprintf_filtered, but prints its result indented. |
| 2826 | Called as fprintfi_filtered (spaces, stream, format, ...); */ |
| 2827 | |
| 2828 | void |
| 2829 | fprintfi_filtered (int spaces, struct ui_file *stream, const char *format, |
| 2830 | ...) |
| 2831 | { |
| 2832 | va_list args; |
| 2833 | |
| 2834 | va_start (args, format); |
| 2835 | print_spaces_filtered (spaces, stream); |
| 2836 | |
| 2837 | vfprintf_filtered (stream, format, args); |
| 2838 | va_end (args); |
| 2839 | } |
| 2840 | |
| 2841 | |
| 2842 | void |
| 2843 | printf_filtered (const char *format, ...) |
| 2844 | { |
| 2845 | va_list args; |
| 2846 | |
| 2847 | va_start (args, format); |
| 2848 | vfprintf_filtered (gdb_stdout, format, args); |
| 2849 | va_end (args); |
| 2850 | } |
| 2851 | |
| 2852 | |
| 2853 | void |
| 2854 | printf_unfiltered (const char *format, ...) |
| 2855 | { |
| 2856 | va_list args; |
| 2857 | |
| 2858 | va_start (args, format); |
| 2859 | vfprintf_unfiltered (gdb_stdout, format, args); |
| 2860 | va_end (args); |
| 2861 | } |
| 2862 | |
| 2863 | /* Like printf_filtered, but prints it's result indented. |
| 2864 | Called as printfi_filtered (spaces, format, ...); */ |
| 2865 | |
| 2866 | void |
| 2867 | printfi_filtered (int spaces, const char *format, ...) |
| 2868 | { |
| 2869 | va_list args; |
| 2870 | |
| 2871 | va_start (args, format); |
| 2872 | print_spaces_filtered (spaces, gdb_stdout); |
| 2873 | vfprintf_filtered (gdb_stdout, format, args); |
| 2874 | va_end (args); |
| 2875 | } |
| 2876 | |
| 2877 | /* Easy -- but watch out! |
| 2878 | |
| 2879 | This routine is *not* a replacement for puts()! puts() appends a newline. |
| 2880 | This one doesn't, and had better not! */ |
| 2881 | |
| 2882 | void |
| 2883 | puts_filtered (const char *string) |
| 2884 | { |
| 2885 | fputs_filtered (string, gdb_stdout); |
| 2886 | } |
| 2887 | |
| 2888 | void |
| 2889 | puts_unfiltered (const char *string) |
| 2890 | { |
| 2891 | fputs_unfiltered (string, gdb_stdout); |
| 2892 | } |
| 2893 | |
| 2894 | /* Return a pointer to N spaces and a null. The pointer is good |
| 2895 | until the next call to here. */ |
| 2896 | char * |
| 2897 | n_spaces (int n) |
| 2898 | { |
| 2899 | char *t; |
| 2900 | static char *spaces = 0; |
| 2901 | static int max_spaces = -1; |
| 2902 | |
| 2903 | if (n > max_spaces) |
| 2904 | { |
| 2905 | if (spaces) |
| 2906 | xfree (spaces); |
| 2907 | spaces = (char *) xmalloc (n + 1); |
| 2908 | for (t = spaces + n; t != spaces;) |
| 2909 | *--t = ' '; |
| 2910 | spaces[n] = '\0'; |
| 2911 | max_spaces = n; |
| 2912 | } |
| 2913 | |
| 2914 | return spaces + max_spaces - n; |
| 2915 | } |
| 2916 | |
| 2917 | /* Print N spaces. */ |
| 2918 | void |
| 2919 | print_spaces_filtered (int n, struct ui_file *stream) |
| 2920 | { |
| 2921 | fputs_filtered (n_spaces (n), stream); |
| 2922 | } |
| 2923 | \f |
| 2924 | /* C++/ObjC demangler stuff. */ |
| 2925 | |
| 2926 | /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language |
| 2927 | LANG, using demangling args ARG_MODE, and print it filtered to STREAM. |
| 2928 | If the name is not mangled, or the language for the name is unknown, or |
| 2929 | demangling is off, the name is printed in its "raw" form. */ |
| 2930 | |
| 2931 | void |
| 2932 | fprintf_symbol_filtered (struct ui_file *stream, char *name, |
| 2933 | enum language lang, int arg_mode) |
| 2934 | { |
| 2935 | char *demangled; |
| 2936 | |
| 2937 | if (name != NULL) |
| 2938 | { |
| 2939 | /* If user wants to see raw output, no problem. */ |
| 2940 | if (!demangle) |
| 2941 | { |
| 2942 | fputs_filtered (name, stream); |
| 2943 | } |
| 2944 | else |
| 2945 | { |
| 2946 | demangled = language_demangle (language_def (lang), name, arg_mode); |
| 2947 | fputs_filtered (demangled ? demangled : name, stream); |
| 2948 | if (demangled != NULL) |
| 2949 | { |
| 2950 | xfree (demangled); |
| 2951 | } |
| 2952 | } |
| 2953 | } |
| 2954 | } |
| 2955 | |
| 2956 | /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any |
| 2957 | differences in whitespace. Returns 0 if they match, non-zero if they |
| 2958 | don't (slightly different than strcmp()'s range of return values). |
| 2959 | |
| 2960 | As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO". |
| 2961 | This "feature" is useful when searching for matching C++ function names |
| 2962 | (such as if the user types 'break FOO', where FOO is a mangled C++ |
| 2963 | function). */ |
| 2964 | |
| 2965 | int |
| 2966 | strcmp_iw (const char *string1, const char *string2) |
| 2967 | { |
| 2968 | while ((*string1 != '\0') && (*string2 != '\0')) |
| 2969 | { |
| 2970 | while (isspace (*string1)) |
| 2971 | { |
| 2972 | string1++; |
| 2973 | } |
| 2974 | while (isspace (*string2)) |
| 2975 | { |
| 2976 | string2++; |
| 2977 | } |
| 2978 | if (*string1 != *string2) |
| 2979 | { |
| 2980 | break; |
| 2981 | } |
| 2982 | if (*string1 != '\0') |
| 2983 | { |
| 2984 | string1++; |
| 2985 | string2++; |
| 2986 | } |
| 2987 | } |
| 2988 | return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0'); |
| 2989 | } |
| 2990 | |
| 2991 | /* This is like strcmp except that it ignores whitespace and treats |
| 2992 | '(' as the first non-NULL character in terms of ordering. Like |
| 2993 | strcmp (and unlike strcmp_iw), it returns negative if STRING1 < |
| 2994 | STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2 |
| 2995 | according to that ordering. |
| 2996 | |
| 2997 | If a list is sorted according to this function and if you want to |
| 2998 | find names in the list that match some fixed NAME according to |
| 2999 | strcmp_iw(LIST_ELT, NAME), then the place to start looking is right |
| 3000 | where this function would put NAME. |
| 3001 | |
| 3002 | Here are some examples of why using strcmp to sort is a bad idea: |
| 3003 | |
| 3004 | Whitespace example: |
| 3005 | |
| 3006 | Say your partial symtab contains: "foo<char *>", "goo". Then, if |
| 3007 | we try to do a search for "foo<char*>", strcmp will locate this |
| 3008 | after "foo<char *>" and before "goo". Then lookup_partial_symbol |
| 3009 | will start looking at strings beginning with "goo", and will never |
| 3010 | see the correct match of "foo<char *>". |
| 3011 | |
| 3012 | Parenthesis example: |
| 3013 | |
| 3014 | In practice, this is less like to be an issue, but I'll give it a |
| 3015 | shot. Let's assume that '$' is a legitimate character to occur in |
| 3016 | symbols. (Which may well even be the case on some systems.) Then |
| 3017 | say that the partial symbol table contains "foo$" and "foo(int)". |
| 3018 | strcmp will put them in this order, since '$' < '('. Now, if the |
| 3019 | user searches for "foo", then strcmp will sort "foo" before "foo$". |
| 3020 | Then lookup_partial_symbol will notice that strcmp_iw("foo$", |
| 3021 | "foo") is false, so it won't proceed to the actual match of |
| 3022 | "foo(int)" with "foo". */ |
| 3023 | |
| 3024 | int |
| 3025 | strcmp_iw_ordered (const char *string1, const char *string2) |
| 3026 | { |
| 3027 | while ((*string1 != '\0') && (*string2 != '\0')) |
| 3028 | { |
| 3029 | while (isspace (*string1)) |
| 3030 | { |
| 3031 | string1++; |
| 3032 | } |
| 3033 | while (isspace (*string2)) |
| 3034 | { |
| 3035 | string2++; |
| 3036 | } |
| 3037 | if (*string1 != *string2) |
| 3038 | { |
| 3039 | break; |
| 3040 | } |
| 3041 | if (*string1 != '\0') |
| 3042 | { |
| 3043 | string1++; |
| 3044 | string2++; |
| 3045 | } |
| 3046 | } |
| 3047 | |
| 3048 | switch (*string1) |
| 3049 | { |
| 3050 | /* Characters are non-equal unless they're both '\0'; we want to |
| 3051 | make sure we get the comparison right according to our |
| 3052 | comparison in the cases where one of them is '\0' or '('. */ |
| 3053 | case '\0': |
| 3054 | if (*string2 == '\0') |
| 3055 | return 0; |
| 3056 | else |
| 3057 | return -1; |
| 3058 | case '(': |
| 3059 | if (*string2 == '\0') |
| 3060 | return 1; |
| 3061 | else |
| 3062 | return -1; |
| 3063 | default: |
| 3064 | if (*string2 == '(') |
| 3065 | return 1; |
| 3066 | else |
| 3067 | return *string1 - *string2; |
| 3068 | } |
| 3069 | } |
| 3070 | |
| 3071 | /* A simple comparison function with opposite semantics to strcmp. */ |
| 3072 | |
| 3073 | int |
| 3074 | streq (const char *lhs, const char *rhs) |
| 3075 | { |
| 3076 | return !strcmp (lhs, rhs); |
| 3077 | } |
| 3078 | \f |
| 3079 | |
| 3080 | /* |
| 3081 | ** subset_compare() |
| 3082 | ** Answer whether string_to_compare is a full or partial match to |
| 3083 | ** template_string. The partial match must be in sequence starting |
| 3084 | ** at index 0. |
| 3085 | */ |
| 3086 | int |
| 3087 | subset_compare (char *string_to_compare, char *template_string) |
| 3088 | { |
| 3089 | int match; |
| 3090 | |
| 3091 | if (template_string != (char *) NULL && string_to_compare != (char *) NULL |
| 3092 | && strlen (string_to_compare) <= strlen (template_string)) |
| 3093 | match = |
| 3094 | (strncmp |
| 3095 | (template_string, string_to_compare, strlen (string_to_compare)) == 0); |
| 3096 | else |
| 3097 | match = 0; |
| 3098 | return match; |
| 3099 | } |
| 3100 | |
| 3101 | static void |
| 3102 | pagination_on_command (char *arg, int from_tty) |
| 3103 | { |
| 3104 | pagination_enabled = 1; |
| 3105 | } |
| 3106 | |
| 3107 | static void |
| 3108 | pagination_off_command (char *arg, int from_tty) |
| 3109 | { |
| 3110 | pagination_enabled = 0; |
| 3111 | } |
| 3112 | |
| 3113 | static void |
| 3114 | show_debug_timestamp (struct ui_file *file, int from_tty, |
| 3115 | struct cmd_list_element *c, const char *value) |
| 3116 | { |
| 3117 | fprintf_filtered (file, _("Timestamping debugging messages is %s.\n"), |
| 3118 | value); |
| 3119 | } |
| 3120 | \f |
| 3121 | |
| 3122 | void |
| 3123 | initialize_utils (void) |
| 3124 | { |
| 3125 | add_setshow_uinteger_cmd ("width", class_support, &chars_per_line, _("\ |
| 3126 | Set number of characters gdb thinks are in a line."), _("\ |
| 3127 | Show number of characters gdb thinks are in a line."), NULL, |
| 3128 | set_width_command, |
| 3129 | show_chars_per_line, |
| 3130 | &setlist, &showlist); |
| 3131 | |
| 3132 | add_setshow_uinteger_cmd ("height", class_support, &lines_per_page, _("\ |
| 3133 | Set number of lines gdb thinks are in a page."), _("\ |
| 3134 | Show number of lines gdb thinks are in a page."), NULL, |
| 3135 | set_height_command, |
| 3136 | show_lines_per_page, |
| 3137 | &setlist, &showlist); |
| 3138 | |
| 3139 | init_page_info (); |
| 3140 | |
| 3141 | add_setshow_boolean_cmd ("demangle", class_support, &demangle, _("\ |
| 3142 | Set demangling of encoded C++/ObjC names when displaying symbols."), _("\ |
| 3143 | Show demangling of encoded C++/ObjC names when displaying symbols."), NULL, |
| 3144 | NULL, |
| 3145 | show_demangle, |
| 3146 | &setprintlist, &showprintlist); |
| 3147 | |
| 3148 | add_setshow_boolean_cmd ("pagination", class_support, |
| 3149 | &pagination_enabled, _("\ |
| 3150 | Set state of pagination."), _("\ |
| 3151 | Show state of pagination."), NULL, |
| 3152 | NULL, |
| 3153 | show_pagination_enabled, |
| 3154 | &setlist, &showlist); |
| 3155 | |
| 3156 | if (xdb_commands) |
| 3157 | { |
| 3158 | add_com ("am", class_support, pagination_on_command, |
| 3159 | _("Enable pagination")); |
| 3160 | add_com ("sm", class_support, pagination_off_command, |
| 3161 | _("Disable pagination")); |
| 3162 | } |
| 3163 | |
| 3164 | add_setshow_boolean_cmd ("sevenbit-strings", class_support, |
| 3165 | &sevenbit_strings, _("\ |
| 3166 | Set printing of 8-bit characters in strings as \\nnn."), _("\ |
| 3167 | Show printing of 8-bit characters in strings as \\nnn."), NULL, |
| 3168 | NULL, |
| 3169 | show_sevenbit_strings, |
| 3170 | &setprintlist, &showprintlist); |
| 3171 | |
| 3172 | add_setshow_boolean_cmd ("asm-demangle", class_support, &asm_demangle, _("\ |
| 3173 | Set demangling of C++/ObjC names in disassembly listings."), _("\ |
| 3174 | Show demangling of C++/ObjC names in disassembly listings."), NULL, |
| 3175 | NULL, |
| 3176 | show_asm_demangle, |
| 3177 | &setprintlist, &showprintlist); |
| 3178 | |
| 3179 | add_setshow_boolean_cmd ("timestamp", class_maintenance, |
| 3180 | &debug_timestamp, _("\ |
| 3181 | Set timestamping of debugging messages."), _("\ |
| 3182 | Show timestamping of debugging messages."), _("\ |
| 3183 | When set, debugging messages will be marked with seconds and microseconds."), |
| 3184 | NULL, |
| 3185 | show_debug_timestamp, |
| 3186 | &setdebuglist, &showdebuglist); |
| 3187 | } |
| 3188 | |
| 3189 | /* Machine specific function to handle SIGWINCH signal. */ |
| 3190 | |
| 3191 | #ifdef SIGWINCH_HANDLER_BODY |
| 3192 | SIGWINCH_HANDLER_BODY |
| 3193 | #endif |
| 3194 | /* Print routines to handle variable size regs, etc. */ |
| 3195 | /* Temporary storage using circular buffer. */ |
| 3196 | #define NUMCELLS 16 |
| 3197 | #define CELLSIZE 50 |
| 3198 | static char * |
| 3199 | get_cell (void) |
| 3200 | { |
| 3201 | static char buf[NUMCELLS][CELLSIZE]; |
| 3202 | static int cell = 0; |
| 3203 | |
| 3204 | if (++cell >= NUMCELLS) |
| 3205 | cell = 0; |
| 3206 | return buf[cell]; |
| 3207 | } |
| 3208 | |
| 3209 | const char * |
| 3210 | paddress (struct gdbarch *gdbarch, CORE_ADDR addr) |
| 3211 | { |
| 3212 | /* Truncate address to the size of a target address, avoiding shifts |
| 3213 | larger or equal than the width of a CORE_ADDR. The local |
| 3214 | variable ADDR_BIT stops the compiler reporting a shift overflow |
| 3215 | when it won't occur. */ |
| 3216 | /* NOTE: This assumes that the significant address information is |
| 3217 | kept in the least significant bits of ADDR - the upper bits were |
| 3218 | either zero or sign extended. Should gdbarch_address_to_pointer or |
| 3219 | some ADDRESS_TO_PRINTABLE() be used to do the conversion? */ |
| 3220 | |
| 3221 | int addr_bit = gdbarch_addr_bit (gdbarch); |
| 3222 | |
| 3223 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) |
| 3224 | addr &= ((CORE_ADDR) 1 << addr_bit) - 1; |
| 3225 | return hex_string (addr); |
| 3226 | } |
| 3227 | |
| 3228 | static char * |
| 3229 | decimal2str (char *sign, ULONGEST addr, int width) |
| 3230 | { |
| 3231 | /* Steal code from valprint.c:print_decimal(). Should this worry |
| 3232 | about the real size of addr as the above does? */ |
| 3233 | unsigned long temp[3]; |
| 3234 | char *str = get_cell (); |
| 3235 | int i = 0; |
| 3236 | |
| 3237 | do |
| 3238 | { |
| 3239 | temp[i] = addr % (1000 * 1000 * 1000); |
| 3240 | addr /= (1000 * 1000 * 1000); |
| 3241 | i++; |
| 3242 | width -= 9; |
| 3243 | } |
| 3244 | while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0]))); |
| 3245 | |
| 3246 | width += 9; |
| 3247 | if (width < 0) |
| 3248 | width = 0; |
| 3249 | |
| 3250 | switch (i) |
| 3251 | { |
| 3252 | case 1: |
| 3253 | xsnprintf (str, CELLSIZE, "%s%0*lu", sign, width, temp[0]); |
| 3254 | break; |
| 3255 | case 2: |
| 3256 | xsnprintf (str, CELLSIZE, "%s%0*lu%09lu", sign, width, |
| 3257 | temp[1], temp[0]); |
| 3258 | break; |
| 3259 | case 3: |
| 3260 | xsnprintf (str, CELLSIZE, "%s%0*lu%09lu%09lu", sign, width, |
| 3261 | temp[2], temp[1], temp[0]); |
| 3262 | break; |
| 3263 | default: |
| 3264 | internal_error (__FILE__, __LINE__, |
| 3265 | _("failed internal consistency check")); |
| 3266 | } |
| 3267 | |
| 3268 | return str; |
| 3269 | } |
| 3270 | |
| 3271 | static char * |
| 3272 | octal2str (ULONGEST addr, int width) |
| 3273 | { |
| 3274 | unsigned long temp[3]; |
| 3275 | char *str = get_cell (); |
| 3276 | int i = 0; |
| 3277 | |
| 3278 | do |
| 3279 | { |
| 3280 | temp[i] = addr % (0100000 * 0100000); |
| 3281 | addr /= (0100000 * 0100000); |
| 3282 | i++; |
| 3283 | width -= 10; |
| 3284 | } |
| 3285 | while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0]))); |
| 3286 | |
| 3287 | width += 10; |
| 3288 | if (width < 0) |
| 3289 | width = 0; |
| 3290 | |
| 3291 | switch (i) |
| 3292 | { |
| 3293 | case 1: |
| 3294 | if (temp[0] == 0) |
| 3295 | xsnprintf (str, CELLSIZE, "%*o", width, 0); |
| 3296 | else |
| 3297 | xsnprintf (str, CELLSIZE, "0%0*lo", width, temp[0]); |
| 3298 | break; |
| 3299 | case 2: |
| 3300 | xsnprintf (str, CELLSIZE, "0%0*lo%010lo", width, temp[1], temp[0]); |
| 3301 | break; |
| 3302 | case 3: |
| 3303 | xsnprintf (str, CELLSIZE, "0%0*lo%010lo%010lo", width, |
| 3304 | temp[2], temp[1], temp[0]); |
| 3305 | break; |
| 3306 | default: |
| 3307 | internal_error (__FILE__, __LINE__, |
| 3308 | _("failed internal consistency check")); |
| 3309 | } |
| 3310 | |
| 3311 | return str; |
| 3312 | } |
| 3313 | |
| 3314 | char * |
| 3315 | pulongest (ULONGEST u) |
| 3316 | { |
| 3317 | return decimal2str ("", u, 0); |
| 3318 | } |
| 3319 | |
| 3320 | char * |
| 3321 | plongest (LONGEST l) |
| 3322 | { |
| 3323 | if (l < 0) |
| 3324 | return decimal2str ("-", -l, 0); |
| 3325 | else |
| 3326 | return decimal2str ("", l, 0); |
| 3327 | } |
| 3328 | |
| 3329 | /* Eliminate warning from compiler on 32-bit systems. */ |
| 3330 | static int thirty_two = 32; |
| 3331 | |
| 3332 | char * |
| 3333 | phex (ULONGEST l, int sizeof_l) |
| 3334 | { |
| 3335 | char *str; |
| 3336 | |
| 3337 | switch (sizeof_l) |
| 3338 | { |
| 3339 | case 8: |
| 3340 | str = get_cell (); |
| 3341 | xsnprintf (str, CELLSIZE, "%08lx%08lx", |
| 3342 | (unsigned long) (l >> thirty_two), |
| 3343 | (unsigned long) (l & 0xffffffff)); |
| 3344 | break; |
| 3345 | case 4: |
| 3346 | str = get_cell (); |
| 3347 | xsnprintf (str, CELLSIZE, "%08lx", (unsigned long) l); |
| 3348 | break; |
| 3349 | case 2: |
| 3350 | str = get_cell (); |
| 3351 | xsnprintf (str, CELLSIZE, "%04x", (unsigned short) (l & 0xffff)); |
| 3352 | break; |
| 3353 | default: |
| 3354 | str = phex (l, sizeof (l)); |
| 3355 | break; |
| 3356 | } |
| 3357 | |
| 3358 | return str; |
| 3359 | } |
| 3360 | |
| 3361 | char * |
| 3362 | phex_nz (ULONGEST l, int sizeof_l) |
| 3363 | { |
| 3364 | char *str; |
| 3365 | |
| 3366 | switch (sizeof_l) |
| 3367 | { |
| 3368 | case 8: |
| 3369 | { |
| 3370 | unsigned long high = (unsigned long) (l >> thirty_two); |
| 3371 | |
| 3372 | str = get_cell (); |
| 3373 | if (high == 0) |
| 3374 | xsnprintf (str, CELLSIZE, "%lx", |
| 3375 | (unsigned long) (l & 0xffffffff)); |
| 3376 | else |
| 3377 | xsnprintf (str, CELLSIZE, "%lx%08lx", high, |
| 3378 | (unsigned long) (l & 0xffffffff)); |
| 3379 | break; |
| 3380 | } |
| 3381 | case 4: |
| 3382 | str = get_cell (); |
| 3383 | xsnprintf (str, CELLSIZE, "%lx", (unsigned long) l); |
| 3384 | break; |
| 3385 | case 2: |
| 3386 | str = get_cell (); |
| 3387 | xsnprintf (str, CELLSIZE, "%x", (unsigned short) (l & 0xffff)); |
| 3388 | break; |
| 3389 | default: |
| 3390 | str = phex_nz (l, sizeof (l)); |
| 3391 | break; |
| 3392 | } |
| 3393 | |
| 3394 | return str; |
| 3395 | } |
| 3396 | |
| 3397 | /* Converts a LONGEST to a C-format hexadecimal literal and stores it |
| 3398 | in a static string. Returns a pointer to this string. */ |
| 3399 | char * |
| 3400 | hex_string (LONGEST num) |
| 3401 | { |
| 3402 | char *result = get_cell (); |
| 3403 | |
| 3404 | xsnprintf (result, CELLSIZE, "0x%s", phex_nz (num, sizeof (num))); |
| 3405 | return result; |
| 3406 | } |
| 3407 | |
| 3408 | /* Converts a LONGEST number to a C-format hexadecimal literal and |
| 3409 | stores it in a static string. Returns a pointer to this string |
| 3410 | that is valid until the next call. The number is padded on the |
| 3411 | left with 0s to at least WIDTH characters. */ |
| 3412 | char * |
| 3413 | hex_string_custom (LONGEST num, int width) |
| 3414 | { |
| 3415 | char *result = get_cell (); |
| 3416 | char *result_end = result + CELLSIZE - 1; |
| 3417 | const char *hex = phex_nz (num, sizeof (num)); |
| 3418 | int hex_len = strlen (hex); |
| 3419 | |
| 3420 | if (hex_len > width) |
| 3421 | width = hex_len; |
| 3422 | if (width + 2 >= CELLSIZE) |
| 3423 | internal_error (__FILE__, __LINE__, _("\ |
| 3424 | hex_string_custom: insufficient space to store result")); |
| 3425 | |
| 3426 | strcpy (result_end - width - 2, "0x"); |
| 3427 | memset (result_end - width, '0', width); |
| 3428 | strcpy (result_end - hex_len, hex); |
| 3429 | return result_end - width - 2; |
| 3430 | } |
| 3431 | |
| 3432 | /* Convert VAL to a numeral in the given radix. For |
| 3433 | * radix 10, IS_SIGNED may be true, indicating a signed quantity; |
| 3434 | * otherwise VAL is interpreted as unsigned. If WIDTH is supplied, |
| 3435 | * it is the minimum width (0-padded if needed). USE_C_FORMAT means |
| 3436 | * to use C format in all cases. If it is false, then 'x' |
| 3437 | * and 'o' formats do not include a prefix (0x or leading 0). */ |
| 3438 | |
| 3439 | char * |
| 3440 | int_string (LONGEST val, int radix, int is_signed, int width, |
| 3441 | int use_c_format) |
| 3442 | { |
| 3443 | switch (radix) |
| 3444 | { |
| 3445 | case 16: |
| 3446 | { |
| 3447 | char *result; |
| 3448 | |
| 3449 | if (width == 0) |
| 3450 | result = hex_string (val); |
| 3451 | else |
| 3452 | result = hex_string_custom (val, width); |
| 3453 | if (! use_c_format) |
| 3454 | result += 2; |
| 3455 | return result; |
| 3456 | } |
| 3457 | case 10: |
| 3458 | { |
| 3459 | if (is_signed && val < 0) |
| 3460 | return decimal2str ("-", -val, width); |
| 3461 | else |
| 3462 | return decimal2str ("", val, width); |
| 3463 | } |
| 3464 | case 8: |
| 3465 | { |
| 3466 | char *result = octal2str (val, width); |
| 3467 | |
| 3468 | if (use_c_format || val == 0) |
| 3469 | return result; |
| 3470 | else |
| 3471 | return result + 1; |
| 3472 | } |
| 3473 | default: |
| 3474 | internal_error (__FILE__, __LINE__, |
| 3475 | _("failed internal consistency check")); |
| 3476 | } |
| 3477 | } |
| 3478 | |
| 3479 | /* Convert a CORE_ADDR into a string. */ |
| 3480 | const char * |
| 3481 | core_addr_to_string (const CORE_ADDR addr) |
| 3482 | { |
| 3483 | char *str = get_cell (); |
| 3484 | |
| 3485 | strcpy (str, "0x"); |
| 3486 | strcat (str, phex (addr, sizeof (addr))); |
| 3487 | return str; |
| 3488 | } |
| 3489 | |
| 3490 | const char * |
| 3491 | core_addr_to_string_nz (const CORE_ADDR addr) |
| 3492 | { |
| 3493 | char *str = get_cell (); |
| 3494 | |
| 3495 | strcpy (str, "0x"); |
| 3496 | strcat (str, phex_nz (addr, sizeof (addr))); |
| 3497 | return str; |
| 3498 | } |
| 3499 | |
| 3500 | /* Convert a string back into a CORE_ADDR. */ |
| 3501 | CORE_ADDR |
| 3502 | string_to_core_addr (const char *my_string) |
| 3503 | { |
| 3504 | CORE_ADDR addr = 0; |
| 3505 | |
| 3506 | if (my_string[0] == '0' && tolower (my_string[1]) == 'x') |
| 3507 | { |
| 3508 | /* Assume that it is in hex. */ |
| 3509 | int i; |
| 3510 | |
| 3511 | for (i = 2; my_string[i] != '\0'; i++) |
| 3512 | { |
| 3513 | if (isdigit (my_string[i])) |
| 3514 | addr = (my_string[i] - '0') + (addr * 16); |
| 3515 | else if (isxdigit (my_string[i])) |
| 3516 | addr = (tolower (my_string[i]) - 'a' + 0xa) + (addr * 16); |
| 3517 | else |
| 3518 | error (_("invalid hex \"%s\""), my_string); |
| 3519 | } |
| 3520 | } |
| 3521 | else |
| 3522 | { |
| 3523 | /* Assume that it is in decimal. */ |
| 3524 | int i; |
| 3525 | |
| 3526 | for (i = 0; my_string[i] != '\0'; i++) |
| 3527 | { |
| 3528 | if (isdigit (my_string[i])) |
| 3529 | addr = (my_string[i] - '0') + (addr * 10); |
| 3530 | else |
| 3531 | error (_("invalid decimal \"%s\""), my_string); |
| 3532 | } |
| 3533 | } |
| 3534 | |
| 3535 | return addr; |
| 3536 | } |
| 3537 | |
| 3538 | const char * |
| 3539 | host_address_to_string (const void *addr) |
| 3540 | { |
| 3541 | char *str = get_cell (); |
| 3542 | |
| 3543 | xsnprintf (str, CELLSIZE, "0x%s", phex_nz ((uintptr_t) addr, sizeof (addr))); |
| 3544 | return str; |
| 3545 | } |
| 3546 | |
| 3547 | char * |
| 3548 | gdb_realpath (const char *filename) |
| 3549 | { |
| 3550 | /* Method 1: The system has a compile time upper bound on a filename |
| 3551 | path. Use that and realpath() to canonicalize the name. This is |
| 3552 | the most common case. Note that, if there isn't a compile time |
| 3553 | upper bound, you want to avoid realpath() at all costs. */ |
| 3554 | #if defined(HAVE_REALPATH) |
| 3555 | { |
| 3556 | # if defined (PATH_MAX) |
| 3557 | char buf[PATH_MAX]; |
| 3558 | # define USE_REALPATH |
| 3559 | # elif defined (MAXPATHLEN) |
| 3560 | char buf[MAXPATHLEN]; |
| 3561 | # define USE_REALPATH |
| 3562 | # endif |
| 3563 | # if defined (USE_REALPATH) |
| 3564 | const char *rp = realpath (filename, buf); |
| 3565 | |
| 3566 | if (rp == NULL) |
| 3567 | rp = filename; |
| 3568 | return xstrdup (rp); |
| 3569 | # endif |
| 3570 | } |
| 3571 | #endif /* HAVE_REALPATH */ |
| 3572 | |
| 3573 | /* Method 2: The host system (i.e., GNU) has the function |
| 3574 | canonicalize_file_name() which malloc's a chunk of memory and |
| 3575 | returns that, use that. */ |
| 3576 | #if defined(HAVE_CANONICALIZE_FILE_NAME) |
| 3577 | { |
| 3578 | char *rp = canonicalize_file_name (filename); |
| 3579 | |
| 3580 | if (rp == NULL) |
| 3581 | return xstrdup (filename); |
| 3582 | else |
| 3583 | return rp; |
| 3584 | } |
| 3585 | #endif |
| 3586 | |
| 3587 | /* FIXME: cagney/2002-11-13: |
| 3588 | |
| 3589 | Method 2a: Use realpath() with a NULL buffer. Some systems, due |
| 3590 | to the problems described in in method 3, have modified their |
| 3591 | realpath() implementation so that it will allocate a buffer when |
| 3592 | NULL is passed in. Before this can be used, though, some sort of |
| 3593 | configure time test would need to be added. Otherwize the code |
| 3594 | will likely core dump. */ |
| 3595 | |
| 3596 | /* Method 3: Now we're getting desperate! The system doesn't have a |
| 3597 | compile time buffer size and no alternative function. Query the |
| 3598 | OS, using pathconf(), for the buffer limit. Care is needed |
| 3599 | though, some systems do not limit PATH_MAX (return -1 for |
| 3600 | pathconf()) making it impossible to pass a correctly sized buffer |
| 3601 | to realpath() (it could always overflow). On those systems, we |
| 3602 | skip this. */ |
| 3603 | #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA) |
| 3604 | { |
| 3605 | /* Find out the max path size. */ |
| 3606 | long path_max = pathconf ("/", _PC_PATH_MAX); |
| 3607 | |
| 3608 | if (path_max > 0) |
| 3609 | { |
| 3610 | /* PATH_MAX is bounded. */ |
| 3611 | char *buf = alloca (path_max); |
| 3612 | char *rp = realpath (filename, buf); |
| 3613 | |
| 3614 | return xstrdup (rp ? rp : filename); |
| 3615 | } |
| 3616 | } |
| 3617 | #endif |
| 3618 | |
| 3619 | /* This system is a lost cause, just dup the buffer. */ |
| 3620 | return xstrdup (filename); |
| 3621 | } |
| 3622 | |
| 3623 | /* Return a copy of FILENAME, with its directory prefix canonicalized |
| 3624 | by gdb_realpath. */ |
| 3625 | |
| 3626 | char * |
| 3627 | xfullpath (const char *filename) |
| 3628 | { |
| 3629 | const char *base_name = lbasename (filename); |
| 3630 | char *dir_name; |
| 3631 | char *real_path; |
| 3632 | char *result; |
| 3633 | |
| 3634 | /* Extract the basename of filename, and return immediately |
| 3635 | a copy of filename if it does not contain any directory prefix. */ |
| 3636 | if (base_name == filename) |
| 3637 | return xstrdup (filename); |
| 3638 | |
| 3639 | dir_name = alloca ((size_t) (base_name - filename + 2)); |
| 3640 | /* Allocate enough space to store the dir_name + plus one extra |
| 3641 | character sometimes needed under Windows (see below), and |
| 3642 | then the closing \000 character. */ |
| 3643 | strncpy (dir_name, filename, base_name - filename); |
| 3644 | dir_name[base_name - filename] = '\000'; |
| 3645 | |
| 3646 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
| 3647 | /* We need to be careful when filename is of the form 'd:foo', which |
| 3648 | is equivalent of d:./foo, which is totally different from d:/foo. */ |
| 3649 | if (strlen (dir_name) == 2 && isalpha (dir_name[0]) && dir_name[1] == ':') |
| 3650 | { |
| 3651 | dir_name[2] = '.'; |
| 3652 | dir_name[3] = '\000'; |
| 3653 | } |
| 3654 | #endif |
| 3655 | |
| 3656 | /* Canonicalize the directory prefix, and build the resulting |
| 3657 | filename. If the dirname realpath already contains an ending |
| 3658 | directory separator, avoid doubling it. */ |
| 3659 | real_path = gdb_realpath (dir_name); |
| 3660 | if (IS_DIR_SEPARATOR (real_path[strlen (real_path) - 1])) |
| 3661 | result = concat (real_path, base_name, (char *) NULL); |
| 3662 | else |
| 3663 | result = concat (real_path, SLASH_STRING, base_name, (char *) NULL); |
| 3664 | |
| 3665 | xfree (real_path); |
| 3666 | return result; |
| 3667 | } |
| 3668 | |
| 3669 | |
| 3670 | /* This is the 32-bit CRC function used by the GNU separate debug |
| 3671 | facility. An executable may contain a section named |
| 3672 | .gnu_debuglink, which holds the name of a separate executable file |
| 3673 | containing its debug info, and a checksum of that file's contents, |
| 3674 | computed using this function. */ |
| 3675 | unsigned long |
| 3676 | gnu_debuglink_crc32 (unsigned long crc, unsigned char *buf, size_t len) |
| 3677 | { |
| 3678 | static const unsigned int crc32_table[256] = { |
| 3679 | 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, |
| 3680 | 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, |
| 3681 | 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, |
| 3682 | 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, |
| 3683 | 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, |
| 3684 | 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, |
| 3685 | 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, |
| 3686 | 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, |
| 3687 | 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, |
| 3688 | 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, |
| 3689 | 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, |
| 3690 | 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, |
| 3691 | 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, |
| 3692 | 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, |
| 3693 | 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, |
| 3694 | 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, |
| 3695 | 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, |
| 3696 | 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, |
| 3697 | 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, |
| 3698 | 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, |
| 3699 | 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, |
| 3700 | 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, |
| 3701 | 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, |
| 3702 | 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, |
| 3703 | 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, |
| 3704 | 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, |
| 3705 | 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, |
| 3706 | 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, |
| 3707 | 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, |
| 3708 | 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, |
| 3709 | 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, |
| 3710 | 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, |
| 3711 | 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, |
| 3712 | 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, |
| 3713 | 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, |
| 3714 | 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, |
| 3715 | 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, |
| 3716 | 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, |
| 3717 | 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, |
| 3718 | 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, |
| 3719 | 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, |
| 3720 | 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, |
| 3721 | 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, |
| 3722 | 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, |
| 3723 | 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, |
| 3724 | 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, |
| 3725 | 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, |
| 3726 | 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, |
| 3727 | 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, |
| 3728 | 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, |
| 3729 | 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, |
| 3730 | 0x2d02ef8d |
| 3731 | }; |
| 3732 | unsigned char *end; |
| 3733 | |
| 3734 | crc = ~crc & 0xffffffff; |
| 3735 | for (end = buf + len; buf < end; ++buf) |
| 3736 | crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8); |
| 3737 | return ~crc & 0xffffffff;; |
| 3738 | } |
| 3739 | |
| 3740 | ULONGEST |
| 3741 | align_up (ULONGEST v, int n) |
| 3742 | { |
| 3743 | /* Check that N is really a power of two. */ |
| 3744 | gdb_assert (n && (n & (n-1)) == 0); |
| 3745 | return (v + n - 1) & -n; |
| 3746 | } |
| 3747 | |
| 3748 | ULONGEST |
| 3749 | align_down (ULONGEST v, int n) |
| 3750 | { |
| 3751 | /* Check that N is really a power of two. */ |
| 3752 | gdb_assert (n && (n & (n-1)) == 0); |
| 3753 | return (v & -n); |
| 3754 | } |
| 3755 | |
| 3756 | /* Allocation function for the libiberty hash table which uses an |
| 3757 | obstack. The obstack is passed as DATA. */ |
| 3758 | |
| 3759 | void * |
| 3760 | hashtab_obstack_allocate (void *data, size_t size, size_t count) |
| 3761 | { |
| 3762 | unsigned int total = size * count; |
| 3763 | void *ptr = obstack_alloc ((struct obstack *) data, total); |
| 3764 | |
| 3765 | memset (ptr, 0, total); |
| 3766 | return ptr; |
| 3767 | } |
| 3768 | |
| 3769 | /* Trivial deallocation function for the libiberty splay tree and hash |
| 3770 | table - don't deallocate anything. Rely on later deletion of the |
| 3771 | obstack. DATA will be the obstack, although it is not needed |
| 3772 | here. */ |
| 3773 | |
| 3774 | void |
| 3775 | dummy_obstack_deallocate (void *object, void *data) |
| 3776 | { |
| 3777 | return; |
| 3778 | } |
| 3779 | |
| 3780 | /* The bit offset of the highest byte in a ULONGEST, for overflow |
| 3781 | checking. */ |
| 3782 | |
| 3783 | #define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT) |
| 3784 | |
| 3785 | /* True (non-zero) iff DIGIT is a valid digit in radix BASE, |
| 3786 | where 2 <= BASE <= 36. */ |
| 3787 | |
| 3788 | static int |
| 3789 | is_digit_in_base (unsigned char digit, int base) |
| 3790 | { |
| 3791 | if (!isalnum (digit)) |
| 3792 | return 0; |
| 3793 | if (base <= 10) |
| 3794 | return (isdigit (digit) && digit < base + '0'); |
| 3795 | else |
| 3796 | return (isdigit (digit) || tolower (digit) < base - 10 + 'a'); |
| 3797 | } |
| 3798 | |
| 3799 | static int |
| 3800 | digit_to_int (unsigned char c) |
| 3801 | { |
| 3802 | if (isdigit (c)) |
| 3803 | return c - '0'; |
| 3804 | else |
| 3805 | return tolower (c) - 'a' + 10; |
| 3806 | } |
| 3807 | |
| 3808 | /* As for strtoul, but for ULONGEST results. */ |
| 3809 | |
| 3810 | ULONGEST |
| 3811 | strtoulst (const char *num, const char **trailer, int base) |
| 3812 | { |
| 3813 | unsigned int high_part; |
| 3814 | ULONGEST result; |
| 3815 | int minus = 0; |
| 3816 | int i = 0; |
| 3817 | |
| 3818 | /* Skip leading whitespace. */ |
| 3819 | while (isspace (num[i])) |
| 3820 | i++; |
| 3821 | |
| 3822 | /* Handle prefixes. */ |
| 3823 | if (num[i] == '+') |
| 3824 | i++; |
| 3825 | else if (num[i] == '-') |
| 3826 | { |
| 3827 | minus = 1; |
| 3828 | i++; |
| 3829 | } |
| 3830 | |
| 3831 | if (base == 0 || base == 16) |
| 3832 | { |
| 3833 | if (num[i] == '0' && (num[i + 1] == 'x' || num[i + 1] == 'X')) |
| 3834 | { |
| 3835 | i += 2; |
| 3836 | if (base == 0) |
| 3837 | base = 16; |
| 3838 | } |
| 3839 | } |
| 3840 | |
| 3841 | if (base == 0 && num[i] == '0') |
| 3842 | base = 8; |
| 3843 | |
| 3844 | if (base == 0) |
| 3845 | base = 10; |
| 3846 | |
| 3847 | if (base < 2 || base > 36) |
| 3848 | { |
| 3849 | errno = EINVAL; |
| 3850 | return 0; |
| 3851 | } |
| 3852 | |
| 3853 | result = high_part = 0; |
| 3854 | for (; is_digit_in_base (num[i], base); i += 1) |
| 3855 | { |
| 3856 | result = result * base + digit_to_int (num[i]); |
| 3857 | high_part = high_part * base + (unsigned int) (result >> HIGH_BYTE_POSN); |
| 3858 | result &= ((ULONGEST) 1 << HIGH_BYTE_POSN) - 1; |
| 3859 | if (high_part > 0xff) |
| 3860 | { |
| 3861 | errno = ERANGE; |
| 3862 | result = ~ (ULONGEST) 0; |
| 3863 | high_part = 0; |
| 3864 | minus = 0; |
| 3865 | break; |
| 3866 | } |
| 3867 | } |
| 3868 | |
| 3869 | if (trailer != NULL) |
| 3870 | *trailer = &num[i]; |
| 3871 | |
| 3872 | result = result + ((ULONGEST) high_part << HIGH_BYTE_POSN); |
| 3873 | if (minus) |
| 3874 | return -result; |
| 3875 | else |
| 3876 | return result; |
| 3877 | } |
| 3878 | |
| 3879 | /* Simple, portable version of dirname that does not modify its |
| 3880 | argument. */ |
| 3881 | |
| 3882 | char * |
| 3883 | ldirname (const char *filename) |
| 3884 | { |
| 3885 | const char *base = lbasename (filename); |
| 3886 | char *dirname; |
| 3887 | |
| 3888 | while (base > filename && IS_DIR_SEPARATOR (base[-1])) |
| 3889 | --base; |
| 3890 | |
| 3891 | if (base == filename) |
| 3892 | return NULL; |
| 3893 | |
| 3894 | dirname = xmalloc (base - filename + 2); |
| 3895 | memcpy (dirname, filename, base - filename); |
| 3896 | |
| 3897 | /* On DOS based file systems, convert "d:foo" to "d:.", so that we |
| 3898 | create "d:./bar" later instead of the (different) "d:/bar". */ |
| 3899 | if (base - filename == 2 && IS_ABSOLUTE_PATH (base) |
| 3900 | && !IS_DIR_SEPARATOR (filename[0])) |
| 3901 | dirname[base++ - filename] = '.'; |
| 3902 | |
| 3903 | dirname[base - filename] = '\0'; |
| 3904 | return dirname; |
| 3905 | } |
| 3906 | |
| 3907 | /* Call libiberty's buildargv, and return the result. |
| 3908 | If buildargv fails due to out-of-memory, call nomem. |
| 3909 | Therefore, the returned value is guaranteed to be non-NULL, |
| 3910 | unless the parameter itself is NULL. */ |
| 3911 | |
| 3912 | char ** |
| 3913 | gdb_buildargv (const char *s) |
| 3914 | { |
| 3915 | char **argv = buildargv (s); |
| 3916 | |
| 3917 | if (s != NULL && argv == NULL) |
| 3918 | nomem (0); |
| 3919 | return argv; |
| 3920 | } |
| 3921 | |
| 3922 | int |
| 3923 | compare_positive_ints (const void *ap, const void *bp) |
| 3924 | { |
| 3925 | /* Because we know we're comparing two ints which are positive, |
| 3926 | there's no danger of overflow here. */ |
| 3927 | return * (int *) ap - * (int *) bp; |
| 3928 | } |
| 3929 | |
| 3930 | #define AMBIGUOUS_MESS1 ".\nMatching formats:" |
| 3931 | #define AMBIGUOUS_MESS2 \ |
| 3932 | ".\nUse \"set gnutarget format-name\" to specify the format." |
| 3933 | |
| 3934 | const char * |
| 3935 | gdb_bfd_errmsg (bfd_error_type error_tag, char **matching) |
| 3936 | { |
| 3937 | char *ret, *retp; |
| 3938 | int ret_len; |
| 3939 | char **p; |
| 3940 | |
| 3941 | /* Check if errmsg just need simple return. */ |
| 3942 | if (error_tag != bfd_error_file_ambiguously_recognized || matching == NULL) |
| 3943 | return bfd_errmsg (error_tag); |
| 3944 | |
| 3945 | ret_len = strlen (bfd_errmsg (error_tag)) + strlen (AMBIGUOUS_MESS1) |
| 3946 | + strlen (AMBIGUOUS_MESS2); |
| 3947 | for (p = matching; *p; p++) |
| 3948 | ret_len += strlen (*p) + 1; |
| 3949 | ret = xmalloc (ret_len + 1); |
| 3950 | retp = ret; |
| 3951 | make_cleanup (xfree, ret); |
| 3952 | |
| 3953 | strcpy (retp, bfd_errmsg (error_tag)); |
| 3954 | retp += strlen (retp); |
| 3955 | |
| 3956 | strcpy (retp, AMBIGUOUS_MESS1); |
| 3957 | retp += strlen (retp); |
| 3958 | |
| 3959 | for (p = matching; *p; p++) |
| 3960 | { |
| 3961 | sprintf (retp, " %s", *p); |
| 3962 | retp += strlen (retp); |
| 3963 | } |
| 3964 | xfree (matching); |
| 3965 | |
| 3966 | strcpy (retp, AMBIGUOUS_MESS2); |
| 3967 | |
| 3968 | return ret; |
| 3969 | } |
| 3970 | |
| 3971 | /* Return ARGS parsed as a valid pid, or throw an error. */ |
| 3972 | |
| 3973 | int |
| 3974 | parse_pid_to_attach (char *args) |
| 3975 | { |
| 3976 | unsigned long pid; |
| 3977 | char *dummy; |
| 3978 | |
| 3979 | if (!args) |
| 3980 | error_no_arg (_("process-id to attach")); |
| 3981 | |
| 3982 | dummy = args; |
| 3983 | pid = strtoul (args, &dummy, 0); |
| 3984 | /* Some targets don't set errno on errors, grrr! */ |
| 3985 | if ((pid == 0 && dummy == args) || dummy != &args[strlen (args)]) |
| 3986 | error (_("Illegal process-id: %s."), args); |
| 3987 | |
| 3988 | return pid; |
| 3989 | } |
| 3990 | |
| 3991 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
| 3992 | extern initialize_file_ftype _initialize_utils; |
| 3993 | |
| 3994 | void |
| 3995 | _initialize_utils (void) |
| 3996 | { |
| 3997 | add_internal_problem_command (&internal_error_problem); |
| 3998 | add_internal_problem_command (&internal_warning_problem); |
| 3999 | } |