1 /* General utility routines for GDB, the GNU debugger. 2 3 Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software 5 Foundation, Inc. 6 7 This file is part of GDB. 8 9 This program is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 2 of the License, or 12 (at your option) any later version. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program; if not, write to the Free Software 21 Foundation, Inc., 59 Temple Place - Suite 330, 22 Boston, MA 02111-1307, USA. */ 23 24 #include "defs.h" 25 #include "gdb_assert.h" 26 #include <ctype.h> 27 #include "gdb_string.h" 28 #include "event-top.h" 29 30 #ifdef TUI 31 #include "tui/tui.h" /* For tui_get_command_dimension. */ 32 #endif 33 34 #ifdef __GO32__ 35 #include <pc.h> 36 #endif 37 38 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */ 39 #ifdef reg 40 #undef reg 41 #endif 42 43 #include <signal.h> 44 #include "gdbcmd.h" 45 #include "serial.h" 46 #include "bfd.h" 47 #include "target.h" 48 #include "demangle.h" 49 #include "expression.h" 50 #include "language.h" 51 #include "charset.h" 52 #include "annotate.h" 53 #include "filenames.h" 54 55 #include "inferior.h" /* for signed_pointer_to_address */ 56 57 #include <sys/param.h> /* For MAXPATHLEN */ 58 59 #ifdef HAVE_CURSES_H 60 #include <curses.h> 61 #endif 62 #ifdef HAVE_TERM_H 63 #include <term.h> 64 #endif 65 66 #include "readline/readline.h" 67 68 #ifdef NEED_DECLARATION_MALLOC 69 extern PTR malloc (); /* OK: PTR */ 70 #endif 71 #ifdef NEED_DECLARATION_REALLOC 72 extern PTR realloc (); /* OK: PTR */ 73 #endif 74 #ifdef NEED_DECLARATION_FREE 75 extern void free (); 76 #endif 77 /* Actually, we'll never have the decl, since we don't define _GNU_SOURCE. */ 78 #if defined(HAVE_CANONICALIZE_FILE_NAME) \ 79 && defined(NEED_DECLARATION_CANONICALIZE_FILE_NAME) 80 extern char *canonicalize_file_name (const char *); 81 #endif 82 83 /* readline defines this. */ 84 #undef savestring 85 86 void (*error_begin_hook) (void); 87 88 /* Holds the last error message issued by gdb */ 89 90 static struct ui_file *gdb_lasterr; 91 92 /* Prototypes for local functions */ 93 94 static void vfprintf_maybe_filtered (struct ui_file *, const char *, 95 va_list, int); 96 97 static void fputs_maybe_filtered (const char *, struct ui_file *, int); 98 99 static void do_my_cleanups (struct cleanup **, struct cleanup *); 100 101 static void prompt_for_continue (void); 102 103 static void set_screen_size (void); 104 static void set_width (void); 105 106 /* Chain of cleanup actions established with make_cleanup, 107 to be executed if an error happens. */ 108 109 static struct cleanup *cleanup_chain; /* cleaned up after a failed command */ 110 static struct cleanup *final_cleanup_chain; /* cleaned up when gdb exits */ 111 static struct cleanup *run_cleanup_chain; /* cleaned up on each 'run' */ 112 static struct cleanup *exec_cleanup_chain; /* cleaned up on each execution command */ 113 /* cleaned up on each error from within an execution command */ 114 static struct cleanup *exec_error_cleanup_chain; 115 116 /* Pointer to what is left to do for an execution command after the 117 target stops. Used only in asynchronous mode, by targets that 118 support async execution. The finish and until commands use it. So 119 does the target extended-remote command. */ 120 struct continuation *cmd_continuation; 121 struct continuation *intermediate_continuation; 122 123 /* Nonzero if we have job control. */ 124 125 int job_control; 126 127 /* Nonzero means a quit has been requested. */ 128 129 int quit_flag; 130 131 /* Nonzero means quit immediately if Control-C is typed now, rather 132 than waiting until QUIT is executed. Be careful in setting this; 133 code which executes with immediate_quit set has to be very careful 134 about being able to deal with being interrupted at any time. It is 135 almost always better to use QUIT; the only exception I can think of 136 is being able to quit out of a system call (using EINTR loses if 137 the SIGINT happens between the previous QUIT and the system call). 138 To immediately quit in the case in which a SIGINT happens between 139 the previous QUIT and setting immediate_quit (desirable anytime we 140 expect to block), call QUIT after setting immediate_quit. */ 141 142 int immediate_quit; 143 144 /* Nonzero means that encoded C++/ObjC names should be printed out in their 145 C++/ObjC form rather than raw. */ 146 147 int demangle = 1; 148 149 /* Nonzero means that encoded C++/ObjC names should be printed out in their 150 C++/ObjC form even in assembler language displays. If this is set, but 151 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */ 152 153 int asm_demangle = 0; 154 155 /* Nonzero means that strings with character values >0x7F should be printed 156 as octal escapes. Zero means just print the value (e.g. it's an 157 international character, and the terminal or window can cope.) */ 158 159 int sevenbit_strings = 0; 160 161 /* String to be printed before error messages, if any. */ 162 163 char *error_pre_print; 164 165 /* String to be printed before quit messages, if any. */ 166 167 char *quit_pre_print; 168 169 /* String to be printed before warning messages, if any. */ 170 171 char *warning_pre_print = "\nwarning: "; 172 173 int pagination_enabled = 1; 174 175 176 /* Add a new cleanup to the cleanup_chain, 177 and return the previous chain pointer 178 to be passed later to do_cleanups or discard_cleanups. 179 Args are FUNCTION to clean up with, and ARG to pass to it. */ 180 181 struct cleanup * 182 make_cleanup (make_cleanup_ftype *function, void *arg) 183 { 184 return make_my_cleanup (&cleanup_chain, function, arg); 185 } 186 187 struct cleanup * 188 make_final_cleanup (make_cleanup_ftype *function, void *arg) 189 { 190 return make_my_cleanup (&final_cleanup_chain, function, arg); 191 } 192 193 struct cleanup * 194 make_run_cleanup (make_cleanup_ftype *function, void *arg) 195 { 196 return make_my_cleanup (&run_cleanup_chain, function, arg); 197 } 198 199 struct cleanup * 200 make_exec_cleanup (make_cleanup_ftype *function, void *arg) 201 { 202 return make_my_cleanup (&exec_cleanup_chain, function, arg); 203 } 204 205 struct cleanup * 206 make_exec_error_cleanup (make_cleanup_ftype *function, void *arg) 207 { 208 return make_my_cleanup (&exec_error_cleanup_chain, function, arg); 209 } 210 211 static void 212 do_freeargv (void *arg) 213 { 214 freeargv ((char **) arg); 215 } 216 217 struct cleanup * 218 make_cleanup_freeargv (char **arg) 219 { 220 return make_my_cleanup (&cleanup_chain, do_freeargv, arg); 221 } 222 223 static void 224 do_bfd_close_cleanup (void *arg) 225 { 226 bfd_close (arg); 227 } 228 229 struct cleanup * 230 make_cleanup_bfd_close (bfd *abfd) 231 { 232 return make_cleanup (do_bfd_close_cleanup, abfd); 233 } 234 235 static void 236 do_close_cleanup (void *arg) 237 { 238 int *fd = arg; 239 close (*fd); 240 xfree (fd); 241 } 242 243 struct cleanup * 244 make_cleanup_close (int fd) 245 { 246 int *saved_fd = xmalloc (sizeof (fd)); 247 *saved_fd = fd; 248 return make_cleanup (do_close_cleanup, saved_fd); 249 } 250 251 static void 252 do_ui_file_delete (void *arg) 253 { 254 ui_file_delete (arg); 255 } 256 257 struct cleanup * 258 make_cleanup_ui_file_delete (struct ui_file *arg) 259 { 260 return make_my_cleanup (&cleanup_chain, do_ui_file_delete, arg); 261 } 262 263 struct cleanup * 264 make_my_cleanup (struct cleanup **pmy_chain, make_cleanup_ftype *function, 265 void *arg) 266 { 267 struct cleanup *new 268 = (struct cleanup *) xmalloc (sizeof (struct cleanup)); 269 struct cleanup *old_chain = *pmy_chain; 270 271 new->next = *pmy_chain; 272 new->function = function; 273 new->arg = arg; 274 *pmy_chain = new; 275 276 return old_chain; 277 } 278 279 /* Discard cleanups and do the actions they describe 280 until we get back to the point OLD_CHAIN in the cleanup_chain. */ 281 282 void 283 do_cleanups (struct cleanup *old_chain) 284 { 285 do_my_cleanups (&cleanup_chain, old_chain); 286 } 287 288 void 289 do_final_cleanups (struct cleanup *old_chain) 290 { 291 do_my_cleanups (&final_cleanup_chain, old_chain); 292 } 293 294 void 295 do_run_cleanups (struct cleanup *old_chain) 296 { 297 do_my_cleanups (&run_cleanup_chain, old_chain); 298 } 299 300 void 301 do_exec_cleanups (struct cleanup *old_chain) 302 { 303 do_my_cleanups (&exec_cleanup_chain, old_chain); 304 } 305 306 void 307 do_exec_error_cleanups (struct cleanup *old_chain) 308 { 309 do_my_cleanups (&exec_error_cleanup_chain, old_chain); 310 } 311 312 static void 313 do_my_cleanups (struct cleanup **pmy_chain, 314 struct cleanup *old_chain) 315 { 316 struct cleanup *ptr; 317 while ((ptr = *pmy_chain) != old_chain) 318 { 319 *pmy_chain = ptr->next; /* Do this first incase recursion */ 320 (*ptr->function) (ptr->arg); 321 xfree (ptr); 322 } 323 } 324 325 /* Discard cleanups, not doing the actions they describe, 326 until we get back to the point OLD_CHAIN in the cleanup_chain. */ 327 328 void 329 discard_cleanups (struct cleanup *old_chain) 330 { 331 discard_my_cleanups (&cleanup_chain, old_chain); 332 } 333 334 void 335 discard_final_cleanups (struct cleanup *old_chain) 336 { 337 discard_my_cleanups (&final_cleanup_chain, old_chain); 338 } 339 340 void 341 discard_exec_error_cleanups (struct cleanup *old_chain) 342 { 343 discard_my_cleanups (&exec_error_cleanup_chain, old_chain); 344 } 345 346 void 347 discard_my_cleanups (struct cleanup **pmy_chain, 348 struct cleanup *old_chain) 349 { 350 struct cleanup *ptr; 351 while ((ptr = *pmy_chain) != old_chain) 352 { 353 *pmy_chain = ptr->next; 354 xfree (ptr); 355 } 356 } 357 358 /* Set the cleanup_chain to 0, and return the old cleanup chain. */ 359 struct cleanup * 360 save_cleanups (void) 361 { 362 return save_my_cleanups (&cleanup_chain); 363 } 364 365 struct cleanup * 366 save_final_cleanups (void) 367 { 368 return save_my_cleanups (&final_cleanup_chain); 369 } 370 371 struct cleanup * 372 save_my_cleanups (struct cleanup **pmy_chain) 373 { 374 struct cleanup *old_chain = *pmy_chain; 375 376 *pmy_chain = 0; 377 return old_chain; 378 } 379 380 /* Restore the cleanup chain from a previously saved chain. */ 381 void 382 restore_cleanups (struct cleanup *chain) 383 { 384 restore_my_cleanups (&cleanup_chain, chain); 385 } 386 387 void 388 restore_final_cleanups (struct cleanup *chain) 389 { 390 restore_my_cleanups (&final_cleanup_chain, chain); 391 } 392 393 void 394 restore_my_cleanups (struct cleanup **pmy_chain, struct cleanup *chain) 395 { 396 *pmy_chain = chain; 397 } 398 399 /* This function is useful for cleanups. 400 Do 401 402 foo = xmalloc (...); 403 old_chain = make_cleanup (free_current_contents, &foo); 404 405 to arrange to free the object thus allocated. */ 406 407 void 408 free_current_contents (void *ptr) 409 { 410 void **location = ptr; 411 if (location == NULL) 412 internal_error (__FILE__, __LINE__, 413 "free_current_contents: NULL pointer"); 414 if (*location != NULL) 415 { 416 xfree (*location); 417 *location = NULL; 418 } 419 } 420 421 /* Provide a known function that does nothing, to use as a base for 422 for a possibly long chain of cleanups. This is useful where we 423 use the cleanup chain for handling normal cleanups as well as dealing 424 with cleanups that need to be done as a result of a call to error(). 425 In such cases, we may not be certain where the first cleanup is, unless 426 we have a do-nothing one to always use as the base. */ 427 428 void 429 null_cleanup (void *arg) 430 { 431 } 432 433 /* Add a continuation to the continuation list, the global list 434 cmd_continuation. The new continuation will be added at the front.*/ 435 void 436 add_continuation (void (*continuation_hook) (struct continuation_arg *), 437 struct continuation_arg *arg_list) 438 { 439 struct continuation *continuation_ptr; 440 441 continuation_ptr = 442 (struct continuation *) xmalloc (sizeof (struct continuation)); 443 continuation_ptr->continuation_hook = continuation_hook; 444 continuation_ptr->arg_list = arg_list; 445 continuation_ptr->next = cmd_continuation; 446 cmd_continuation = continuation_ptr; 447 } 448 449 /* Walk down the cmd_continuation list, and execute all the 450 continuations. There is a problem though. In some cases new 451 continuations may be added while we are in the middle of this 452 loop. If this happens they will be added in the front, and done 453 before we have a chance of exhausting those that were already 454 there. We need to then save the beginning of the list in a pointer 455 and do the continuations from there on, instead of using the 456 global beginning of list as our iteration pointer.*/ 457 void 458 do_all_continuations (void) 459 { 460 struct continuation *continuation_ptr; 461 struct continuation *saved_continuation; 462 463 /* Copy the list header into another pointer, and set the global 464 list header to null, so that the global list can change as a side 465 effect of invoking the continuations and the processing of 466 the preexisting continuations will not be affected. */ 467 continuation_ptr = cmd_continuation; 468 cmd_continuation = NULL; 469 470 /* Work now on the list we have set aside. */ 471 while (continuation_ptr) 472 { 473 (continuation_ptr->continuation_hook) (continuation_ptr->arg_list); 474 saved_continuation = continuation_ptr; 475 continuation_ptr = continuation_ptr->next; 476 xfree (saved_continuation); 477 } 478 } 479 480 /* Walk down the cmd_continuation list, and get rid of all the 481 continuations. */ 482 void 483 discard_all_continuations (void) 484 { 485 struct continuation *continuation_ptr; 486 487 while (cmd_continuation) 488 { 489 continuation_ptr = cmd_continuation; 490 cmd_continuation = continuation_ptr->next; 491 xfree (continuation_ptr); 492 } 493 } 494 495 /* Add a continuation to the continuation list, the global list 496 intermediate_continuation. The new continuation will be added at the front.*/ 497 void 498 add_intermediate_continuation (void (*continuation_hook) 499 (struct continuation_arg *), 500 struct continuation_arg *arg_list) 501 { 502 struct continuation *continuation_ptr; 503 504 continuation_ptr = 505 (struct continuation *) xmalloc (sizeof (struct continuation)); 506 continuation_ptr->continuation_hook = continuation_hook; 507 continuation_ptr->arg_list = arg_list; 508 continuation_ptr->next = intermediate_continuation; 509 intermediate_continuation = continuation_ptr; 510 } 511 512 /* Walk down the cmd_continuation list, and execute all the 513 continuations. There is a problem though. In some cases new 514 continuations may be added while we are in the middle of this 515 loop. If this happens they will be added in the front, and done 516 before we have a chance of exhausting those that were already 517 there. We need to then save the beginning of the list in a pointer 518 and do the continuations from there on, instead of using the 519 global beginning of list as our iteration pointer.*/ 520 void 521 do_all_intermediate_continuations (void) 522 { 523 struct continuation *continuation_ptr; 524 struct continuation *saved_continuation; 525 526 /* Copy the list header into another pointer, and set the global 527 list header to null, so that the global list can change as a side 528 effect of invoking the continuations and the processing of 529 the preexisting continuations will not be affected. */ 530 continuation_ptr = intermediate_continuation; 531 intermediate_continuation = NULL; 532 533 /* Work now on the list we have set aside. */ 534 while (continuation_ptr) 535 { 536 (continuation_ptr->continuation_hook) (continuation_ptr->arg_list); 537 saved_continuation = continuation_ptr; 538 continuation_ptr = continuation_ptr->next; 539 xfree (saved_continuation); 540 } 541 } 542 543 /* Walk down the cmd_continuation list, and get rid of all the 544 continuations. */ 545 void 546 discard_all_intermediate_continuations (void) 547 { 548 struct continuation *continuation_ptr; 549 550 while (intermediate_continuation) 551 { 552 continuation_ptr = intermediate_continuation; 553 intermediate_continuation = continuation_ptr->next; 554 xfree (continuation_ptr); 555 } 556 } 557 558 559 560 /* Print a warning message. The first argument STRING is the warning 561 message, used as an fprintf format string, the second is the 562 va_list of arguments for that string. A warning is unfiltered (not 563 paginated) so that the user does not need to page through each 564 screen full of warnings when there are lots of them. */ 565 566 void 567 vwarning (const char *string, va_list args) 568 { 569 if (warning_hook) 570 (*warning_hook) (string, args); 571 else 572 { 573 target_terminal_ours (); 574 wrap_here (""); /* Force out any buffered output */ 575 gdb_flush (gdb_stdout); 576 if (warning_pre_print) 577 fputs_unfiltered (warning_pre_print, gdb_stderr); 578 vfprintf_unfiltered (gdb_stderr, string, args); 579 fprintf_unfiltered (gdb_stderr, "\n"); 580 va_end (args); 581 } 582 } 583 584 /* Print a warning message. 585 The first argument STRING is the warning message, used as a fprintf string, 586 and the remaining args are passed as arguments to it. 587 The primary difference between warnings and errors is that a warning 588 does not force the return to command level. */ 589 590 void 591 warning (const char *string, ...) 592 { 593 va_list args; 594 va_start (args, string); 595 vwarning (string, args); 596 va_end (args); 597 } 598 599 /* Print an error message and return to command level. 600 The first argument STRING is the error message, used as a fprintf string, 601 and the remaining args are passed as arguments to it. */ 602 603 NORETURN void 604 verror (const char *string, va_list args) 605 { 606 struct ui_file *tmp_stream = mem_fileopen (); 607 make_cleanup_ui_file_delete (tmp_stream); 608 vfprintf_unfiltered (tmp_stream, string, args); 609 error_stream (tmp_stream); 610 } 611 612 NORETURN void 613 error (const char *string, ...) 614 { 615 va_list args; 616 va_start (args, string); 617 verror (string, args); 618 va_end (args); 619 } 620 621 static void 622 do_write (void *data, const char *buffer, long length_buffer) 623 { 624 ui_file_write (data, buffer, length_buffer); 625 } 626 627 /* Cause a silent error to occur. Any error message is recorded 628 though it is not issued. */ 629 NORETURN void 630 error_silent (const char *string, ...) 631 { 632 va_list args; 633 struct ui_file *tmp_stream = mem_fileopen (); 634 va_start (args, string); 635 make_cleanup_ui_file_delete (tmp_stream); 636 vfprintf_unfiltered (tmp_stream, string, args); 637 /* Copy the stream into the GDB_LASTERR buffer. */ 638 ui_file_rewind (gdb_lasterr); 639 ui_file_put (tmp_stream, do_write, gdb_lasterr); 640 va_end (args); 641 642 throw_exception (RETURN_ERROR); 643 } 644 645 /* Output an error message including any pre-print text to gdb_stderr. */ 646 void 647 error_output_message (char *pre_print, char *msg) 648 { 649 target_terminal_ours (); 650 wrap_here (""); /* Force out any buffered output */ 651 gdb_flush (gdb_stdout); 652 annotate_error_begin (); 653 if (pre_print) 654 fputs_filtered (pre_print, gdb_stderr); 655 fputs_filtered (msg, gdb_stderr); 656 fprintf_filtered (gdb_stderr, "\n"); 657 } 658 659 NORETURN void 660 error_stream (struct ui_file *stream) 661 { 662 if (error_begin_hook) 663 error_begin_hook (); 664 665 /* Copy the stream into the GDB_LASTERR buffer. */ 666 ui_file_rewind (gdb_lasterr); 667 ui_file_put (stream, do_write, gdb_lasterr); 668 669 /* Write the message plus any error_pre_print to gdb_stderr. */ 670 target_terminal_ours (); 671 wrap_here (""); /* Force out any buffered output */ 672 gdb_flush (gdb_stdout); 673 annotate_error_begin (); 674 if (error_pre_print) 675 fputs_filtered (error_pre_print, gdb_stderr); 676 ui_file_put (stream, do_write, gdb_stderr); 677 fprintf_filtered (gdb_stderr, "\n"); 678 679 throw_exception (RETURN_ERROR); 680 } 681 682 /* Get the last error message issued by gdb */ 683 684 char * 685 error_last_message (void) 686 { 687 long len; 688 return ui_file_xstrdup (gdb_lasterr, &len); 689 } 690 691 /* This is to be called by main() at the very beginning */ 692 693 void 694 error_init (void) 695 { 696 gdb_lasterr = mem_fileopen (); 697 } 698 699 /* Print a message reporting an internal error/warning. Ask the user 700 if they want to continue, dump core, or just exit. Return 701 something to indicate a quit. */ 702 703 struct internal_problem 704 { 705 const char *name; 706 /* FIXME: cagney/2002-08-15: There should be ``maint set/show'' 707 commands available for controlling these variables. */ 708 enum auto_boolean should_quit; 709 enum auto_boolean should_dump_core; 710 }; 711 712 /* Report a problem, internal to GDB, to the user. Once the problem 713 has been reported, and assuming GDB didn't quit, the caller can 714 either allow execution to resume or throw an error. */ 715 716 static void 717 internal_vproblem (struct internal_problem *problem, 718 const char *file, int line, const char *fmt, va_list ap) 719 { 720 static int dejavu; 721 int quit_p; 722 int dump_core_p; 723 char *reason; 724 725 /* Don't allow infinite error/warning recursion. */ 726 { 727 static char msg[] = "Recursive internal problem.\n"; 728 switch (dejavu) 729 { 730 case 0: 731 dejavu = 1; 732 break; 733 case 1: 734 dejavu = 2; 735 fputs_unfiltered (msg, gdb_stderr); 736 abort (); /* NOTE: GDB has only three calls to abort(). */ 737 default: 738 dejavu = 3; 739 write (STDERR_FILENO, msg, sizeof (msg)); 740 exit (1); 741 } 742 } 743 744 /* Try to get the message out and at the start of a new line. */ 745 target_terminal_ours (); 746 begin_line (); 747 748 /* Create a string containing the full error/warning message. Need 749 to call query with this full string, as otherwize the reason 750 (error/warning) and question become separated. Format using a 751 style similar to a compiler error message. Include extra detail 752 so that the user knows that they are living on the edge. */ 753 { 754 char *msg; 755 xvasprintf (&msg, fmt, ap); 756 xasprintf (&reason, "\ 757 %s:%d: %s: %s\n\ 758 A problem internal to GDB has been detected,\n\ 759 further debugging may prove unreliable.", file, line, problem->name, msg); 760 xfree (msg); 761 make_cleanup (xfree, reason); 762 } 763 764 switch (problem->should_quit) 765 { 766 case AUTO_BOOLEAN_AUTO: 767 /* Default (yes/batch case) is to quit GDB. When in batch mode 768 this lessens the likelhood of GDB going into an infinate 769 loop. */ 770 quit_p = query ("%s\nQuit this debugging session? ", reason); 771 break; 772 case AUTO_BOOLEAN_TRUE: 773 quit_p = 1; 774 break; 775 case AUTO_BOOLEAN_FALSE: 776 quit_p = 0; 777 break; 778 default: 779 internal_error (__FILE__, __LINE__, "bad switch"); 780 } 781 782 switch (problem->should_dump_core) 783 { 784 case AUTO_BOOLEAN_AUTO: 785 /* Default (yes/batch case) is to dump core. This leaves a GDB 786 `dropping' so that it is easier to see that something went 787 wrong in GDB. */ 788 dump_core_p = query ("%s\nCreate a core file of GDB? ", reason); 789 break; 790 break; 791 case AUTO_BOOLEAN_TRUE: 792 dump_core_p = 1; 793 break; 794 case AUTO_BOOLEAN_FALSE: 795 dump_core_p = 0; 796 break; 797 default: 798 internal_error (__FILE__, __LINE__, "bad switch"); 799 } 800 801 if (quit_p) 802 { 803 if (dump_core_p) 804 abort (); /* NOTE: GDB has only three calls to abort(). */ 805 else 806 exit (1); 807 } 808 else 809 { 810 if (dump_core_p) 811 { 812 if (fork () == 0) 813 abort (); /* NOTE: GDB has only three calls to abort(). */ 814 } 815 } 816 817 dejavu = 0; 818 } 819 820 static struct internal_problem internal_error_problem = { 821 "internal-error", AUTO_BOOLEAN_AUTO, AUTO_BOOLEAN_AUTO 822 }; 823 824 NORETURN void 825 internal_verror (const char *file, int line, const char *fmt, va_list ap) 826 { 827 internal_vproblem (&internal_error_problem, file, line, fmt, ap); 828 throw_exception (RETURN_ERROR); 829 } 830 831 NORETURN void 832 internal_error (const char *file, int line, const char *string, ...) 833 { 834 va_list ap; 835 va_start (ap, string); 836 internal_verror (file, line, string, ap); 837 va_end (ap); 838 } 839 840 static struct internal_problem internal_warning_problem = { 841 "internal-error", AUTO_BOOLEAN_AUTO, AUTO_BOOLEAN_AUTO 842 }; 843 844 void 845 internal_vwarning (const char *file, int line, const char *fmt, va_list ap) 846 { 847 internal_vproblem (&internal_warning_problem, file, line, fmt, ap); 848 } 849 850 void 851 internal_warning (const char *file, int line, const char *string, ...) 852 { 853 va_list ap; 854 va_start (ap, string); 855 internal_vwarning (file, line, string, ap); 856 va_end (ap); 857 } 858 859 /* The strerror() function can return NULL for errno values that are 860 out of range. Provide a "safe" version that always returns a 861 printable string. */ 862 863 char * 864 safe_strerror (int errnum) 865 { 866 char *msg; 867 static char buf[32]; 868 869 msg = strerror (errnum); 870 if (msg == NULL) 871 { 872 sprintf (buf, "(undocumented errno %d)", errnum); 873 msg = buf; 874 } 875 return (msg); 876 } 877 878 /* Print the system error message for errno, and also mention STRING 879 as the file name for which the error was encountered. 880 Then return to command level. */ 881 882 NORETURN void 883 perror_with_name (const char *string) 884 { 885 char *err; 886 char *combined; 887 888 err = safe_strerror (errno); 889 combined = (char *) alloca (strlen (err) + strlen (string) + 3); 890 strcpy (combined, string); 891 strcat (combined, ": "); 892 strcat (combined, err); 893 894 /* I understand setting these is a matter of taste. Still, some people 895 may clear errno but not know about bfd_error. Doing this here is not 896 unreasonable. */ 897 bfd_set_error (bfd_error_no_error); 898 errno = 0; 899 900 error ("%s.", combined); 901 } 902 903 /* Print the system error message for ERRCODE, and also mention STRING 904 as the file name for which the error was encountered. */ 905 906 void 907 print_sys_errmsg (const char *string, int errcode) 908 { 909 char *err; 910 char *combined; 911 912 err = safe_strerror (errcode); 913 combined = (char *) alloca (strlen (err) + strlen (string) + 3); 914 strcpy (combined, string); 915 strcat (combined, ": "); 916 strcat (combined, err); 917 918 /* We want anything which was printed on stdout to come out first, before 919 this message. */ 920 gdb_flush (gdb_stdout); 921 fprintf_unfiltered (gdb_stderr, "%s.\n", combined); 922 } 923 924 /* Control C eventually causes this to be called, at a convenient time. */ 925 926 void 927 quit (void) 928 { 929 struct serial *gdb_stdout_serial = serial_fdopen (1); 930 931 target_terminal_ours (); 932 933 /* We want all output to appear now, before we print "Quit". We 934 have 3 levels of buffering we have to flush (it's possible that 935 some of these should be changed to flush the lower-level ones 936 too): */ 937 938 /* 1. The _filtered buffer. */ 939 wrap_here ((char *) 0); 940 941 /* 2. The stdio buffer. */ 942 gdb_flush (gdb_stdout); 943 gdb_flush (gdb_stderr); 944 945 /* 3. The system-level buffer. */ 946 serial_drain_output (gdb_stdout_serial); 947 serial_un_fdopen (gdb_stdout_serial); 948 949 annotate_error_begin (); 950 951 /* Don't use *_filtered; we don't want to prompt the user to continue. */ 952 if (quit_pre_print) 953 fputs_unfiltered (quit_pre_print, gdb_stderr); 954 955 #ifdef __MSDOS__ 956 /* No steenking SIGINT will ever be coming our way when the 957 program is resumed. Don't lie. */ 958 fprintf_unfiltered (gdb_stderr, "Quit\n"); 959 #else 960 if (job_control 961 /* If there is no terminal switching for this target, then we can't 962 possibly get screwed by the lack of job control. */ 963 || current_target.to_terminal_ours == NULL) 964 fprintf_unfiltered (gdb_stderr, "Quit\n"); 965 else 966 fprintf_unfiltered (gdb_stderr, 967 "Quit (expect signal SIGINT when the program is resumed)\n"); 968 #endif 969 throw_exception (RETURN_QUIT); 970 } 971 972 /* Control C comes here */ 973 void 974 request_quit (int signo) 975 { 976 quit_flag = 1; 977 /* Restore the signal handler. Harmless with BSD-style signals, needed 978 for System V-style signals. So just always do it, rather than worrying 979 about USG defines and stuff like that. */ 980 signal (signo, request_quit); 981 982 if (immediate_quit) 983 quit (); 984 } 985 986 /* Memory management stuff (malloc friends). */ 987 988 static void * 989 mmalloc (void *md, size_t size) 990 { 991 return malloc (size); /* NOTE: GDB's only call to malloc() */ 992 } 993 994 static void * 995 mrealloc (void *md, void *ptr, size_t size) 996 { 997 if (ptr == 0) /* Guard against old realloc's */ 998 return mmalloc (md, size); 999 else 1000 return realloc (ptr, size); /* NOTE: GDB's only call to ralloc() */ 1001 } 1002 1003 static void * 1004 mcalloc (void *md, size_t number, size_t size) 1005 { 1006 return calloc (number, size); /* NOTE: GDB's only call to calloc() */ 1007 } 1008 1009 static void 1010 mfree (void *md, void *ptr) 1011 { 1012 free (ptr); /* NOTE: GDB's only call to free() */ 1013 } 1014 1015 /* This used to do something interesting with USE_MMALLOC. 1016 * It can be retired any time. -- chastain 2004-01-19. */ 1017 void 1018 init_malloc (void *md) 1019 { 1020 } 1021 1022 /* Called when a memory allocation fails, with the number of bytes of 1023 memory requested in SIZE. */ 1024 1025 NORETURN void 1026 nomem (long size) 1027 { 1028 if (size > 0) 1029 { 1030 internal_error (__FILE__, __LINE__, 1031 "virtual memory exhausted: can't allocate %ld bytes.", 1032 size); 1033 } 1034 else 1035 { 1036 internal_error (__FILE__, __LINE__, "virtual memory exhausted."); 1037 } 1038 } 1039 1040 /* The xmmalloc() family of memory management routines. 1041 1042 These are are like the mmalloc() family except that they implement 1043 consistent semantics and guard against typical memory management 1044 problems: if a malloc fails, an internal error is thrown; if 1045 free(NULL) is called, it is ignored; if *alloc(0) is called, NULL 1046 is returned. 1047 1048 All these routines are implemented using the mmalloc() family. */ 1049 1050 void * 1051 xmmalloc (void *md, size_t size) 1052 { 1053 void *val; 1054 1055 /* See libiberty/xmalloc.c. This function need's to match that's 1056 semantics. It never returns NULL. */ 1057 if (size == 0) 1058 size = 1; 1059 1060 val = mmalloc (md, size); 1061 if (val == NULL) 1062 nomem (size); 1063 1064 return (val); 1065 } 1066 1067 void * 1068 xmrealloc (void *md, void *ptr, size_t size) 1069 { 1070 void *val; 1071 1072 /* See libiberty/xmalloc.c. This function need's to match that's 1073 semantics. It never returns NULL. */ 1074 if (size == 0) 1075 size = 1; 1076 1077 if (ptr != NULL) 1078 val = mrealloc (md, ptr, size); 1079 else 1080 val = mmalloc (md, size); 1081 if (val == NULL) 1082 nomem (size); 1083 1084 return (val); 1085 } 1086 1087 void * 1088 xmcalloc (void *md, size_t number, size_t size) 1089 { 1090 void *mem; 1091 1092 /* See libiberty/xmalloc.c. This function need's to match that's 1093 semantics. It never returns NULL. */ 1094 if (number == 0 || size == 0) 1095 { 1096 number = 1; 1097 size = 1; 1098 } 1099 1100 mem = mcalloc (md, number, size); 1101 if (mem == NULL) 1102 nomem (number * size); 1103 1104 return mem; 1105 } 1106 1107 void 1108 xmfree (void *md, void *ptr) 1109 { 1110 if (ptr != NULL) 1111 mfree (md, ptr); 1112 } 1113 1114 /* The xmalloc() (libiberty.h) family of memory management routines. 1115 1116 These are like the ISO-C malloc() family except that they implement 1117 consistent semantics and guard against typical memory management 1118 problems. See xmmalloc() above for further information. 1119 1120 All these routines are wrappers to the xmmalloc() family. */ 1121 1122 /* NOTE: These are declared using PTR to ensure consistency with 1123 "libiberty.h". xfree() is GDB local. */ 1124 1125 PTR /* OK: PTR */ 1126 xmalloc (size_t size) 1127 { 1128 return xmmalloc (NULL, size); 1129 } 1130 1131 PTR /* OK: PTR */ 1132 xrealloc (PTR ptr, size_t size) /* OK: PTR */ 1133 { 1134 return xmrealloc (NULL, ptr, size); 1135 } 1136 1137 PTR /* OK: PTR */ 1138 xcalloc (size_t number, size_t size) 1139 { 1140 return xmcalloc (NULL, number, size); 1141 } 1142 1143 void 1144 xfree (void *ptr) 1145 { 1146 xmfree (NULL, ptr); 1147 } 1148 1149 1150 /* Like asprintf/vasprintf but get an internal_error if the call 1151 fails. */ 1152 1153 char * 1154 xstrprintf (const char *format, ...) 1155 { 1156 char *ret; 1157 va_list args; 1158 va_start (args, format); 1159 xvasprintf (&ret, format, args); 1160 va_end (args); 1161 return ret; 1162 } 1163 1164 void 1165 xasprintf (char **ret, const char *format, ...) 1166 { 1167 va_list args; 1168 va_start (args, format); 1169 xvasprintf (ret, format, args); 1170 va_end (args); 1171 } 1172 1173 void 1174 xvasprintf (char **ret, const char *format, va_list ap) 1175 { 1176 int status = vasprintf (ret, format, ap); 1177 /* NULL could be returned due to a memory allocation problem; a 1178 badly format string; or something else. */ 1179 if ((*ret) == NULL) 1180 internal_error (__FILE__, __LINE__, 1181 "vasprintf returned NULL buffer (errno %d)", errno); 1182 /* A negative status with a non-NULL buffer shouldn't never 1183 happen. But to be sure. */ 1184 if (status < 0) 1185 internal_error (__FILE__, __LINE__, 1186 "vasprintf call failed (errno %d)", errno); 1187 } 1188 1189 1190 /* My replacement for the read system call. 1191 Used like `read' but keeps going if `read' returns too soon. */ 1192 1193 int 1194 myread (int desc, char *addr, int len) 1195 { 1196 int val; 1197 int orglen = len; 1198 1199 while (len > 0) 1200 { 1201 val = read (desc, addr, len); 1202 if (val < 0) 1203 return val; 1204 if (val == 0) 1205 return orglen - len; 1206 len -= val; 1207 addr += val; 1208 } 1209 return orglen; 1210 } 1211 1212 /* Make a copy of the string at PTR with SIZE characters 1213 (and add a null character at the end in the copy). 1214 Uses malloc to get the space. Returns the address of the copy. */ 1215 1216 char * 1217 savestring (const char *ptr, size_t size) 1218 { 1219 char *p = (char *) xmalloc (size + 1); 1220 memcpy (p, ptr, size); 1221 p[size] = 0; 1222 return p; 1223 } 1224 1225 char * 1226 msavestring (void *md, const char *ptr, size_t size) 1227 { 1228 char *p = (char *) xmmalloc (md, size + 1); 1229 memcpy (p, ptr, size); 1230 p[size] = 0; 1231 return p; 1232 } 1233 1234 char * 1235 mstrsave (void *md, const char *ptr) 1236 { 1237 return (msavestring (md, ptr, strlen (ptr))); 1238 } 1239 1240 void 1241 print_spaces (int n, struct ui_file *file) 1242 { 1243 fputs_unfiltered (n_spaces (n), file); 1244 } 1245 1246 /* Print a host address. */ 1247 1248 void 1249 gdb_print_host_address (const void *addr, struct ui_file *stream) 1250 { 1251 1252 /* We could use the %p conversion specifier to fprintf if we had any 1253 way of knowing whether this host supports it. But the following 1254 should work on the Alpha and on 32 bit machines. */ 1255 1256 fprintf_filtered (stream, "0x%lx", (unsigned long) addr); 1257 } 1258 1259 /* Ask user a y-or-n question and return 1 iff answer is yes. 1260 Takes three args which are given to printf to print the question. 1261 The first, a control string, should end in "? ". 1262 It should not say how to answer, because we do that. */ 1263 1264 /* VARARGS */ 1265 int 1266 query (const char *ctlstr, ...) 1267 { 1268 va_list args; 1269 int answer; 1270 int ans2; 1271 int retval; 1272 1273 va_start (args, ctlstr); 1274 1275 if (query_hook) 1276 { 1277 return query_hook (ctlstr, args); 1278 } 1279 1280 /* Automatically answer "yes" if input is not from a terminal. */ 1281 if (!input_from_terminal_p ()) 1282 return 1; 1283 1284 while (1) 1285 { 1286 wrap_here (""); /* Flush any buffered output */ 1287 gdb_flush (gdb_stdout); 1288 1289 if (annotation_level > 1) 1290 printf_filtered ("\n\032\032pre-query\n"); 1291 1292 vfprintf_filtered (gdb_stdout, ctlstr, args); 1293 printf_filtered ("(y or n) "); 1294 1295 if (annotation_level > 1) 1296 printf_filtered ("\n\032\032query\n"); 1297 1298 wrap_here (""); 1299 gdb_flush (gdb_stdout); 1300 1301 answer = fgetc (stdin); 1302 clearerr (stdin); /* in case of C-d */ 1303 if (answer == EOF) /* C-d */ 1304 { 1305 retval = 1; 1306 break; 1307 } 1308 /* Eat rest of input line, to EOF or newline */ 1309 if (answer != '\n') 1310 do 1311 { 1312 ans2 = fgetc (stdin); 1313 clearerr (stdin); 1314 } 1315 while (ans2 != EOF && ans2 != '\n' && ans2 != '\r'); 1316 1317 if (answer >= 'a') 1318 answer -= 040; 1319 if (answer == 'Y') 1320 { 1321 retval = 1; 1322 break; 1323 } 1324 if (answer == 'N') 1325 { 1326 retval = 0; 1327 break; 1328 } 1329 printf_filtered ("Please answer y or n.\n"); 1330 } 1331 1332 if (annotation_level > 1) 1333 printf_filtered ("\n\032\032post-query\n"); 1334 return retval; 1335 } 1336 1337 1338 /* This function supports the nquery() and yquery() functions. 1339 Ask user a y-or-n question and return 0 if answer is no, 1 if 1340 answer is yes, or default the answer to the specified default. 1341 DEFCHAR is either 'y' or 'n' and refers to the default answer. 1342 CTLSTR is the control string and should end in "? ". It should 1343 not say how to answer, because we do that. 1344 ARGS are the arguments passed along with the CTLSTR argument to 1345 printf. */ 1346 1347 static int 1348 defaulted_query (const char *ctlstr, const char defchar, va_list args) 1349 { 1350 int answer; 1351 int ans2; 1352 int retval; 1353 int def_value; 1354 char def_answer, not_def_answer; 1355 char *y_string, *n_string; 1356 1357 /* Set up according to which answer is the default. */ 1358 if (defchar == 'y') 1359 { 1360 def_value = 1; 1361 def_answer = 'Y'; 1362 not_def_answer = 'N'; 1363 y_string = "[y]"; 1364 n_string = "n"; 1365 } 1366 else 1367 { 1368 def_value = 0; 1369 def_answer = 'N'; 1370 not_def_answer = 'Y'; 1371 y_string = "y"; 1372 n_string = "[n]"; 1373 } 1374 1375 if (query_hook) 1376 { 1377 return query_hook (ctlstr, args); 1378 } 1379 1380 /* Automatically answer default value if input is not from a terminal. */ 1381 if (!input_from_terminal_p ()) 1382 return def_value; 1383 1384 while (1) 1385 { 1386 wrap_here (""); /* Flush any buffered output */ 1387 gdb_flush (gdb_stdout); 1388 1389 if (annotation_level > 1) 1390 printf_filtered ("\n\032\032pre-%cquery\n", defchar); 1391 1392 vfprintf_filtered (gdb_stdout, ctlstr, args); 1393 printf_filtered ("(%s or %s) ", y_string, n_string); 1394 1395 if (annotation_level > 1) 1396 printf_filtered ("\n\032\032%cquery\n", defchar); 1397 1398 wrap_here (""); 1399 gdb_flush (gdb_stdout); 1400 1401 answer = fgetc (stdin); 1402 clearerr (stdin); /* in case of C-d */ 1403 if (answer == EOF) /* C-d */ 1404 { 1405 retval = def_value; 1406 break; 1407 } 1408 /* Eat rest of input line, to EOF or newline */ 1409 if (answer != '\n') 1410 do 1411 { 1412 ans2 = fgetc (stdin); 1413 clearerr (stdin); 1414 } 1415 while (ans2 != EOF && ans2 != '\n' && ans2 != '\r'); 1416 1417 if (answer >= 'a') 1418 answer -= 040; 1419 /* Check answer. For the non-default, the user must specify 1420 the non-default explicitly. */ 1421 if (answer == not_def_answer) 1422 { 1423 retval = !def_value; 1424 break; 1425 } 1426 /* Otherwise, for the default, the user may either specify 1427 the required input or have it default by entering nothing. */ 1428 if (answer == def_answer || answer == '\n' || 1429 answer == '\r' || answer == EOF) 1430 { 1431 retval = def_value; 1432 break; 1433 } 1434 /* Invalid entries are not defaulted and require another selection. */ 1435 printf_filtered ("Please answer %s or %s.\n", 1436 y_string, n_string); 1437 } 1438 1439 if (annotation_level > 1) 1440 printf_filtered ("\n\032\032post-%cquery\n", defchar); 1441 return retval; 1442 } 1443 1444 1445 /* Ask user a y-or-n question and return 0 if answer is no, 1 if 1446 answer is yes, or 0 if answer is defaulted. 1447 Takes three args which are given to printf to print the question. 1448 The first, a control string, should end in "? ". 1449 It should not say how to answer, because we do that. */ 1450 1451 int 1452 nquery (const char *ctlstr, ...) 1453 { 1454 va_list args; 1455 1456 va_start (args, ctlstr); 1457 return defaulted_query (ctlstr, 'n', args); 1458 va_end (args); 1459 } 1460 1461 /* Ask user a y-or-n question and return 0 if answer is no, 1 if 1462 answer is yes, or 1 if answer is defaulted. 1463 Takes three args which are given to printf to print the question. 1464 The first, a control string, should end in "? ". 1465 It should not say how to answer, because we do that. */ 1466 1467 int 1468 yquery (const char *ctlstr, ...) 1469 { 1470 va_list args; 1471 1472 va_start (args, ctlstr); 1473 return defaulted_query (ctlstr, 'y', args); 1474 va_end (args); 1475 } 1476 1477 /* Print an error message saying that we couldn't make sense of a 1478 \^mumble sequence in a string or character constant. START and END 1479 indicate a substring of some larger string that contains the 1480 erroneous backslash sequence, missing the initial backslash. */ 1481 static NORETURN int 1482 no_control_char_error (const char *start, const char *end) 1483 { 1484 int len = end - start; 1485 char *copy = alloca (end - start + 1); 1486 1487 memcpy (copy, start, len); 1488 copy[len] = '\0'; 1489 1490 error ("There is no control character `\\%s' in the `%s' character set.", 1491 copy, target_charset ()); 1492 } 1493 1494 /* Parse a C escape sequence. STRING_PTR points to a variable 1495 containing a pointer to the string to parse. That pointer 1496 should point to the character after the \. That pointer 1497 is updated past the characters we use. The value of the 1498 escape sequence is returned. 1499 1500 A negative value means the sequence \ newline was seen, 1501 which is supposed to be equivalent to nothing at all. 1502 1503 If \ is followed by a null character, we return a negative 1504 value and leave the string pointer pointing at the null character. 1505 1506 If \ is followed by 000, we return 0 and leave the string pointer 1507 after the zeros. A value of 0 does not mean end of string. */ 1508 1509 int 1510 parse_escape (char **string_ptr) 1511 { 1512 int target_char; 1513 int c = *(*string_ptr)++; 1514 if (c_parse_backslash (c, &target_char)) 1515 return target_char; 1516 else 1517 switch (c) 1518 { 1519 case '\n': 1520 return -2; 1521 case 0: 1522 (*string_ptr)--; 1523 return 0; 1524 case '^': 1525 { 1526 /* Remember where this escape sequence started, for reporting 1527 errors. */ 1528 char *sequence_start_pos = *string_ptr - 1; 1529 1530 c = *(*string_ptr)++; 1531 1532 if (c == '?') 1533 { 1534 /* XXXCHARSET: What is `delete' in the host character set? */ 1535 c = 0177; 1536 1537 if (!host_char_to_target (c, &target_char)) 1538 error ("There is no character corresponding to `Delete' " 1539 "in the target character set `%s'.", host_charset ()); 1540 1541 return target_char; 1542 } 1543 else if (c == '\\') 1544 target_char = parse_escape (string_ptr); 1545 else 1546 { 1547 if (!host_char_to_target (c, &target_char)) 1548 no_control_char_error (sequence_start_pos, *string_ptr); 1549 } 1550 1551 /* Now target_char is something like `c', and we want to find 1552 its control-character equivalent. */ 1553 if (!target_char_to_control_char (target_char, &target_char)) 1554 no_control_char_error (sequence_start_pos, *string_ptr); 1555 1556 return target_char; 1557 } 1558 1559 /* XXXCHARSET: we need to use isdigit and value-of-digit 1560 methods of the host character set here. */ 1561 1562 case '0': 1563 case '1': 1564 case '2': 1565 case '3': 1566 case '4': 1567 case '5': 1568 case '6': 1569 case '7': 1570 { 1571 int i = c - '0'; 1572 int count = 0; 1573 while (++count < 3) 1574 { 1575 c = (**string_ptr); 1576 if (c >= '0' && c <= '7') 1577 { 1578 (*string_ptr)++; 1579 i *= 8; 1580 i += c - '0'; 1581 } 1582 else 1583 { 1584 break; 1585 } 1586 } 1587 return i; 1588 } 1589 default: 1590 if (!host_char_to_target (c, &target_char)) 1591 error 1592 ("The escape sequence `\%c' is equivalent to plain `%c', which" 1593 " has no equivalent\n" "in the `%s' character set.", c, c, 1594 target_charset ()); 1595 return target_char; 1596 } 1597 } 1598 1599 /* Print the character C on STREAM as part of the contents of a literal 1600 string whose delimiter is QUOTER. Note that this routine should only 1601 be call for printing things which are independent of the language 1602 of the program being debugged. */ 1603 1604 static void 1605 printchar (int c, void (*do_fputs) (const char *, struct ui_file *), 1606 void (*do_fprintf) (struct ui_file *, const char *, ...), 1607 struct ui_file *stream, int quoter) 1608 { 1609 1610 c &= 0xFF; /* Avoid sign bit follies */ 1611 1612 if (c < 0x20 || /* Low control chars */ 1613 (c >= 0x7F && c < 0xA0) || /* DEL, High controls */ 1614 (sevenbit_strings && c >= 0x80)) 1615 { /* high order bit set */ 1616 switch (c) 1617 { 1618 case '\n': 1619 do_fputs ("\\n", stream); 1620 break; 1621 case '\b': 1622 do_fputs ("\\b", stream); 1623 break; 1624 case '\t': 1625 do_fputs ("\\t", stream); 1626 break; 1627 case '\f': 1628 do_fputs ("\\f", stream); 1629 break; 1630 case '\r': 1631 do_fputs ("\\r", stream); 1632 break; 1633 case '\033': 1634 do_fputs ("\\e", stream); 1635 break; 1636 case '\007': 1637 do_fputs ("\\a", stream); 1638 break; 1639 default: 1640 do_fprintf (stream, "\\%.3o", (unsigned int) c); 1641 break; 1642 } 1643 } 1644 else 1645 { 1646 if (c == '\\' || c == quoter) 1647 do_fputs ("\\", stream); 1648 do_fprintf (stream, "%c", c); 1649 } 1650 } 1651 1652 /* Print the character C on STREAM as part of the contents of a 1653 literal string whose delimiter is QUOTER. Note that these routines 1654 should only be call for printing things which are independent of 1655 the language of the program being debugged. */ 1656 1657 void 1658 fputstr_filtered (const char *str, int quoter, struct ui_file *stream) 1659 { 1660 while (*str) 1661 printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter); 1662 } 1663 1664 void 1665 fputstr_unfiltered (const char *str, int quoter, struct ui_file *stream) 1666 { 1667 while (*str) 1668 printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter); 1669 } 1670 1671 void 1672 fputstrn_unfiltered (const char *str, int n, int quoter, 1673 struct ui_file *stream) 1674 { 1675 int i; 1676 for (i = 0; i < n; i++) 1677 printchar (str[i], fputs_unfiltered, fprintf_unfiltered, stream, quoter); 1678 } 1679 1680 1681 /* Number of lines per page or UINT_MAX if paging is disabled. */ 1682 static unsigned int lines_per_page; 1683 1684 /* Number of chars per line or UINT_MAX if line folding is disabled. */ 1685 static unsigned int chars_per_line; 1686 1687 /* Current count of lines printed on this page, chars on this line. */ 1688 static unsigned int lines_printed, chars_printed; 1689 1690 /* Buffer and start column of buffered text, for doing smarter word- 1691 wrapping. When someone calls wrap_here(), we start buffering output 1692 that comes through fputs_filtered(). If we see a newline, we just 1693 spit it out and forget about the wrap_here(). If we see another 1694 wrap_here(), we spit it out and remember the newer one. If we see 1695 the end of the line, we spit out a newline, the indent, and then 1696 the buffered output. */ 1697 1698 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which 1699 are waiting to be output (they have already been counted in chars_printed). 1700 When wrap_buffer[0] is null, the buffer is empty. */ 1701 static char *wrap_buffer; 1702 1703 /* Pointer in wrap_buffer to the next character to fill. */ 1704 static char *wrap_pointer; 1705 1706 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column 1707 is non-zero. */ 1708 static char *wrap_indent; 1709 1710 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping 1711 is not in effect. */ 1712 static int wrap_column; 1713 1714 1715 /* Inialize the number of lines per page and chars per line. */ 1716 1717 void 1718 init_page_info (void) 1719 { 1720 #if defined(TUI) 1721 if (!tui_get_command_dimension (&chars_per_line, &lines_per_page)) 1722 #endif 1723 { 1724 int rows, cols; 1725 1726 #if defined(__GO32__) 1727 rows = ScreenRows (); 1728 cols = ScreenCols (); 1729 lines_per_page = rows; 1730 chars_per_line = cols; 1731 #else 1732 /* Make sure Readline has initialized its terminal settings. */ 1733 rl_reset_terminal (NULL); 1734 1735 /* Get the screen size from Readline. */ 1736 rl_get_screen_size (&rows, &cols); 1737 lines_per_page = rows; 1738 chars_per_line = cols; 1739 1740 /* Readline should have fetched the termcap entry for us. */ 1741 if (tgetnum ("li") < 0 || getenv ("EMACS")) 1742 { 1743 /* The number of lines per page is not mentioned in the 1744 terminal description. This probably means that paging is 1745 not useful (e.g. emacs shell window), so disable paging. */ 1746 lines_per_page = UINT_MAX; 1747 } 1748 1749 /* FIXME: Get rid of this junk. */ 1750 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) 1751 SIGWINCH_HANDLER (SIGWINCH); 1752 #endif 1753 1754 /* If the output is not a terminal, don't paginate it. */ 1755 if (!ui_file_isatty (gdb_stdout)) 1756 lines_per_page = UINT_MAX; 1757 #endif 1758 } 1759 1760 set_screen_size (); 1761 set_width (); 1762 } 1763 1764 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */ 1765 1766 static void 1767 set_screen_size (void) 1768 { 1769 int rows = lines_per_page; 1770 int cols = chars_per_line; 1771 1772 if (rows <= 0) 1773 rows = INT_MAX; 1774 1775 if (cols <= 0) 1776 rl_get_screen_size (NULL, &cols); 1777 1778 /* Update Readline's idea of the terminal size. */ 1779 rl_set_screen_size (rows, cols); 1780 } 1781 1782 /* Reinitialize WRAP_BUFFER according to the current value of 1783 CHARS_PER_LINE. */ 1784 1785 static void 1786 set_width (void) 1787 { 1788 if (chars_per_line == 0) 1789 init_page_info (); 1790 1791 if (!wrap_buffer) 1792 { 1793 wrap_buffer = (char *) xmalloc (chars_per_line + 2); 1794 wrap_buffer[0] = '\0'; 1795 } 1796 else 1797 wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2); 1798 wrap_pointer = wrap_buffer; /* Start it at the beginning. */ 1799 } 1800 1801 static void 1802 set_width_command (char *args, int from_tty, struct cmd_list_element *c) 1803 { 1804 set_screen_size (); 1805 set_width (); 1806 } 1807 1808 static void 1809 set_height_command (char *args, int from_tty, struct cmd_list_element *c) 1810 { 1811 set_screen_size (); 1812 } 1813 1814 /* Wait, so the user can read what's on the screen. Prompt the user 1815 to continue by pressing RETURN. */ 1816 1817 static void 1818 prompt_for_continue (void) 1819 { 1820 char *ignore; 1821 char cont_prompt[120]; 1822 1823 if (annotation_level > 1) 1824 printf_unfiltered ("\n\032\032pre-prompt-for-continue\n"); 1825 1826 strcpy (cont_prompt, 1827 "---Type <return> to continue, or q <return> to quit---"); 1828 if (annotation_level > 1) 1829 strcat (cont_prompt, "\n\032\032prompt-for-continue\n"); 1830 1831 /* We must do this *before* we call gdb_readline, else it will eventually 1832 call us -- thinking that we're trying to print beyond the end of the 1833 screen. */ 1834 reinitialize_more_filter (); 1835 1836 immediate_quit++; 1837 /* On a real operating system, the user can quit with SIGINT. 1838 But not on GO32. 1839 1840 'q' is provided on all systems so users don't have to change habits 1841 from system to system, and because telling them what to do in 1842 the prompt is more user-friendly than expecting them to think of 1843 SIGINT. */ 1844 /* Call readline, not gdb_readline, because GO32 readline handles control-C 1845 whereas control-C to gdb_readline will cause the user to get dumped 1846 out to DOS. */ 1847 ignore = gdb_readline_wrapper (cont_prompt); 1848 1849 if (annotation_level > 1) 1850 printf_unfiltered ("\n\032\032post-prompt-for-continue\n"); 1851 1852 if (ignore) 1853 { 1854 char *p = ignore; 1855 while (*p == ' ' || *p == '\t') 1856 ++p; 1857 if (p[0] == 'q') 1858 { 1859 if (!event_loop_p) 1860 request_quit (SIGINT); 1861 else 1862 async_request_quit (0); 1863 } 1864 xfree (ignore); 1865 } 1866 immediate_quit--; 1867 1868 /* Now we have to do this again, so that GDB will know that it doesn't 1869 need to save the ---Type <return>--- line at the top of the screen. */ 1870 reinitialize_more_filter (); 1871 1872 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */ 1873 } 1874 1875 /* Reinitialize filter; ie. tell it to reset to original values. */ 1876 1877 void 1878 reinitialize_more_filter (void) 1879 { 1880 lines_printed = 0; 1881 chars_printed = 0; 1882 } 1883 1884 /* Indicate that if the next sequence of characters overflows the line, 1885 a newline should be inserted here rather than when it hits the end. 1886 If INDENT is non-null, it is a string to be printed to indent the 1887 wrapped part on the next line. INDENT must remain accessible until 1888 the next call to wrap_here() or until a newline is printed through 1889 fputs_filtered(). 1890 1891 If the line is already overfull, we immediately print a newline and 1892 the indentation, and disable further wrapping. 1893 1894 If we don't know the width of lines, but we know the page height, 1895 we must not wrap words, but should still keep track of newlines 1896 that were explicitly printed. 1897 1898 INDENT should not contain tabs, as that will mess up the char count 1899 on the next line. FIXME. 1900 1901 This routine is guaranteed to force out any output which has been 1902 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be 1903 used to force out output from the wrap_buffer. */ 1904 1905 void 1906 wrap_here (char *indent) 1907 { 1908 /* This should have been allocated, but be paranoid anyway. */ 1909 if (!wrap_buffer) 1910 internal_error (__FILE__, __LINE__, "failed internal consistency check"); 1911 1912 if (wrap_buffer[0]) 1913 { 1914 *wrap_pointer = '\0'; 1915 fputs_unfiltered (wrap_buffer, gdb_stdout); 1916 } 1917 wrap_pointer = wrap_buffer; 1918 wrap_buffer[0] = '\0'; 1919 if (chars_per_line == UINT_MAX) /* No line overflow checking */ 1920 { 1921 wrap_column = 0; 1922 } 1923 else if (chars_printed >= chars_per_line) 1924 { 1925 puts_filtered ("\n"); 1926 if (indent != NULL) 1927 puts_filtered (indent); 1928 wrap_column = 0; 1929 } 1930 else 1931 { 1932 wrap_column = chars_printed; 1933 if (indent == NULL) 1934 wrap_indent = ""; 1935 else 1936 wrap_indent = indent; 1937 } 1938 } 1939 1940 /* Print input string to gdb_stdout, filtered, with wrap, 1941 arranging strings in columns of n chars. String can be 1942 right or left justified in the column. Never prints 1943 trailing spaces. String should never be longer than 1944 width. FIXME: this could be useful for the EXAMINE 1945 command, which currently doesn't tabulate very well */ 1946 1947 void 1948 puts_filtered_tabular (char *string, int width, int right) 1949 { 1950 int spaces = 0; 1951 int stringlen; 1952 char *spacebuf; 1953 1954 gdb_assert (chars_per_line > 0); 1955 if (chars_per_line == UINT_MAX) 1956 { 1957 fputs_filtered (string, gdb_stdout); 1958 fputs_filtered ("\n", gdb_stdout); 1959 return; 1960 } 1961 1962 if (((chars_printed - 1) / width + 2) * width >= chars_per_line) 1963 fputs_filtered ("\n", gdb_stdout); 1964 1965 if (width >= chars_per_line) 1966 width = chars_per_line - 1; 1967 1968 stringlen = strlen (string); 1969 1970 if (chars_printed > 0) 1971 spaces = width - (chars_printed - 1) % width - 1; 1972 if (right) 1973 spaces += width - stringlen; 1974 1975 spacebuf = alloca (spaces + 1); 1976 spacebuf[spaces] = '\0'; 1977 while (spaces--) 1978 spacebuf[spaces] = ' '; 1979 1980 fputs_filtered (spacebuf, gdb_stdout); 1981 fputs_filtered (string, gdb_stdout); 1982 } 1983 1984 1985 /* Ensure that whatever gets printed next, using the filtered output 1986 commands, starts at the beginning of the line. I.E. if there is 1987 any pending output for the current line, flush it and start a new 1988 line. Otherwise do nothing. */ 1989 1990 void 1991 begin_line (void) 1992 { 1993 if (chars_printed > 0) 1994 { 1995 puts_filtered ("\n"); 1996 } 1997 } 1998 1999 2000 /* Like fputs but if FILTER is true, pause after every screenful. 2001 2002 Regardless of FILTER can wrap at points other than the final 2003 character of a line. 2004 2005 Unlike fputs, fputs_maybe_filtered does not return a value. 2006 It is OK for LINEBUFFER to be NULL, in which case just don't print 2007 anything. 2008 2009 Note that a longjmp to top level may occur in this routine (only if 2010 FILTER is true) (since prompt_for_continue may do so) so this 2011 routine should not be called when cleanups are not in place. */ 2012 2013 static void 2014 fputs_maybe_filtered (const char *linebuffer, struct ui_file *stream, 2015 int filter) 2016 { 2017 const char *lineptr; 2018 2019 if (linebuffer == 0) 2020 return; 2021 2022 /* Don't do any filtering if it is disabled. */ 2023 if ((stream != gdb_stdout) || !pagination_enabled 2024 || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX)) 2025 { 2026 fputs_unfiltered (linebuffer, stream); 2027 return; 2028 } 2029 2030 /* Go through and output each character. Show line extension 2031 when this is necessary; prompt user for new page when this is 2032 necessary. */ 2033 2034 lineptr = linebuffer; 2035 while (*lineptr) 2036 { 2037 /* Possible new page. */ 2038 if (filter && (lines_printed >= lines_per_page - 1)) 2039 prompt_for_continue (); 2040 2041 while (*lineptr && *lineptr != '\n') 2042 { 2043 /* Print a single line. */ 2044 if (*lineptr == '\t') 2045 { 2046 if (wrap_column) 2047 *wrap_pointer++ = '\t'; 2048 else 2049 fputc_unfiltered ('\t', stream); 2050 /* Shifting right by 3 produces the number of tab stops 2051 we have already passed, and then adding one and 2052 shifting left 3 advances to the next tab stop. */ 2053 chars_printed = ((chars_printed >> 3) + 1) << 3; 2054 lineptr++; 2055 } 2056 else 2057 { 2058 if (wrap_column) 2059 *wrap_pointer++ = *lineptr; 2060 else 2061 fputc_unfiltered (*lineptr, stream); 2062 chars_printed++; 2063 lineptr++; 2064 } 2065 2066 if (chars_printed >= chars_per_line) 2067 { 2068 unsigned int save_chars = chars_printed; 2069 2070 chars_printed = 0; 2071 lines_printed++; 2072 /* If we aren't actually wrapping, don't output newline -- 2073 if chars_per_line is right, we probably just overflowed 2074 anyway; if it's wrong, let us keep going. */ 2075 if (wrap_column) 2076 fputc_unfiltered ('\n', stream); 2077 2078 /* Possible new page. */ 2079 if (lines_printed >= lines_per_page - 1) 2080 prompt_for_continue (); 2081 2082 /* Now output indentation and wrapped string */ 2083 if (wrap_column) 2084 { 2085 fputs_unfiltered (wrap_indent, stream); 2086 *wrap_pointer = '\0'; /* Null-terminate saved stuff */ 2087 fputs_unfiltered (wrap_buffer, stream); /* and eject it */ 2088 /* FIXME, this strlen is what prevents wrap_indent from 2089 containing tabs. However, if we recurse to print it 2090 and count its chars, we risk trouble if wrap_indent is 2091 longer than (the user settable) chars_per_line. 2092 Note also that this can set chars_printed > chars_per_line 2093 if we are printing a long string. */ 2094 chars_printed = strlen (wrap_indent) 2095 + (save_chars - wrap_column); 2096 wrap_pointer = wrap_buffer; /* Reset buffer */ 2097 wrap_buffer[0] = '\0'; 2098 wrap_column = 0; /* And disable fancy wrap */ 2099 } 2100 } 2101 } 2102 2103 if (*lineptr == '\n') 2104 { 2105 chars_printed = 0; 2106 wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */ 2107 lines_printed++; 2108 fputc_unfiltered ('\n', stream); 2109 lineptr++; 2110 } 2111 } 2112 } 2113 2114 void 2115 fputs_filtered (const char *linebuffer, struct ui_file *stream) 2116 { 2117 fputs_maybe_filtered (linebuffer, stream, 1); 2118 } 2119 2120 int 2121 putchar_unfiltered (int c) 2122 { 2123 char buf = c; 2124 ui_file_write (gdb_stdout, &buf, 1); 2125 return c; 2126 } 2127 2128 /* Write character C to gdb_stdout using GDB's paging mechanism and return C. 2129 May return nonlocally. */ 2130 2131 int 2132 putchar_filtered (int c) 2133 { 2134 return fputc_filtered (c, gdb_stdout); 2135 } 2136 2137 int 2138 fputc_unfiltered (int c, struct ui_file *stream) 2139 { 2140 char buf = c; 2141 ui_file_write (stream, &buf, 1); 2142 return c; 2143 } 2144 2145 int 2146 fputc_filtered (int c, struct ui_file *stream) 2147 { 2148 char buf[2]; 2149 2150 buf[0] = c; 2151 buf[1] = 0; 2152 fputs_filtered (buf, stream); 2153 return c; 2154 } 2155 2156 /* puts_debug is like fputs_unfiltered, except it prints special 2157 characters in printable fashion. */ 2158 2159 void 2160 puts_debug (char *prefix, char *string, char *suffix) 2161 { 2162 int ch; 2163 2164 /* Print prefix and suffix after each line. */ 2165 static int new_line = 1; 2166 static int return_p = 0; 2167 static char *prev_prefix = ""; 2168 static char *prev_suffix = ""; 2169 2170 if (*string == '\n') 2171 return_p = 0; 2172 2173 /* If the prefix is changing, print the previous suffix, a new line, 2174 and the new prefix. */ 2175 if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line) 2176 { 2177 fputs_unfiltered (prev_suffix, gdb_stdlog); 2178 fputs_unfiltered ("\n", gdb_stdlog); 2179 fputs_unfiltered (prefix, gdb_stdlog); 2180 } 2181 2182 /* Print prefix if we printed a newline during the previous call. */ 2183 if (new_line) 2184 { 2185 new_line = 0; 2186 fputs_unfiltered (prefix, gdb_stdlog); 2187 } 2188 2189 prev_prefix = prefix; 2190 prev_suffix = suffix; 2191 2192 /* Output characters in a printable format. */ 2193 while ((ch = *string++) != '\0') 2194 { 2195 switch (ch) 2196 { 2197 default: 2198 if (isprint (ch)) 2199 fputc_unfiltered (ch, gdb_stdlog); 2200 2201 else 2202 fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff); 2203 break; 2204 2205 case '\\': 2206 fputs_unfiltered ("\\\\", gdb_stdlog); 2207 break; 2208 case '\b': 2209 fputs_unfiltered ("\\b", gdb_stdlog); 2210 break; 2211 case '\f': 2212 fputs_unfiltered ("\\f", gdb_stdlog); 2213 break; 2214 case '\n': 2215 new_line = 1; 2216 fputs_unfiltered ("\\n", gdb_stdlog); 2217 break; 2218 case '\r': 2219 fputs_unfiltered ("\\r", gdb_stdlog); 2220 break; 2221 case '\t': 2222 fputs_unfiltered ("\\t", gdb_stdlog); 2223 break; 2224 case '\v': 2225 fputs_unfiltered ("\\v", gdb_stdlog); 2226 break; 2227 } 2228 2229 return_p = ch == '\r'; 2230 } 2231 2232 /* Print suffix if we printed a newline. */ 2233 if (new_line) 2234 { 2235 fputs_unfiltered (suffix, gdb_stdlog); 2236 fputs_unfiltered ("\n", gdb_stdlog); 2237 } 2238 } 2239 2240 2241 /* Print a variable number of ARGS using format FORMAT. If this 2242 information is going to put the amount written (since the last call 2243 to REINITIALIZE_MORE_FILTER or the last page break) over the page size, 2244 call prompt_for_continue to get the users permision to continue. 2245 2246 Unlike fprintf, this function does not return a value. 2247 2248 We implement three variants, vfprintf (takes a vararg list and stream), 2249 fprintf (takes a stream to write on), and printf (the usual). 2250 2251 Note also that a longjmp to top level may occur in this routine 2252 (since prompt_for_continue may do so) so this routine should not be 2253 called when cleanups are not in place. */ 2254 2255 static void 2256 vfprintf_maybe_filtered (struct ui_file *stream, const char *format, 2257 va_list args, int filter) 2258 { 2259 char *linebuffer; 2260 struct cleanup *old_cleanups; 2261 2262 xvasprintf (&linebuffer, format, args); 2263 old_cleanups = make_cleanup (xfree, linebuffer); 2264 fputs_maybe_filtered (linebuffer, stream, filter); 2265 do_cleanups (old_cleanups); 2266 } 2267 2268 2269 void 2270 vfprintf_filtered (struct ui_file *stream, const char *format, va_list args) 2271 { 2272 vfprintf_maybe_filtered (stream, format, args, 1); 2273 } 2274 2275 void 2276 vfprintf_unfiltered (struct ui_file *stream, const char *format, va_list args) 2277 { 2278 char *linebuffer; 2279 struct cleanup *old_cleanups; 2280 2281 xvasprintf (&linebuffer, format, args); 2282 old_cleanups = make_cleanup (xfree, linebuffer); 2283 fputs_unfiltered (linebuffer, stream); 2284 do_cleanups (old_cleanups); 2285 } 2286 2287 void 2288 vprintf_filtered (const char *format, va_list args) 2289 { 2290 vfprintf_maybe_filtered (gdb_stdout, format, args, 1); 2291 } 2292 2293 void 2294 vprintf_unfiltered (const char *format, va_list args) 2295 { 2296 vfprintf_unfiltered (gdb_stdout, format, args); 2297 } 2298 2299 void 2300 fprintf_filtered (struct ui_file *stream, const char *format, ...) 2301 { 2302 va_list args; 2303 va_start (args, format); 2304 vfprintf_filtered (stream, format, args); 2305 va_end (args); 2306 } 2307 2308 void 2309 fprintf_unfiltered (struct ui_file *stream, const char *format, ...) 2310 { 2311 va_list args; 2312 va_start (args, format); 2313 vfprintf_unfiltered (stream, format, args); 2314 va_end (args); 2315 } 2316 2317 /* Like fprintf_filtered, but prints its result indented. 2318 Called as fprintfi_filtered (spaces, stream, format, ...); */ 2319 2320 void 2321 fprintfi_filtered (int spaces, struct ui_file *stream, const char *format, 2322 ...) 2323 { 2324 va_list args; 2325 va_start (args, format); 2326 print_spaces_filtered (spaces, stream); 2327 2328 vfprintf_filtered (stream, format, args); 2329 va_end (args); 2330 } 2331 2332 2333 void 2334 printf_filtered (const char *format, ...) 2335 { 2336 va_list args; 2337 va_start (args, format); 2338 vfprintf_filtered (gdb_stdout, format, args); 2339 va_end (args); 2340 } 2341 2342 2343 void 2344 printf_unfiltered (const char *format, ...) 2345 { 2346 va_list args; 2347 va_start (args, format); 2348 vfprintf_unfiltered (gdb_stdout, format, args); 2349 va_end (args); 2350 } 2351 2352 /* Like printf_filtered, but prints it's result indented. 2353 Called as printfi_filtered (spaces, format, ...); */ 2354 2355 void 2356 printfi_filtered (int spaces, const char *format, ...) 2357 { 2358 va_list args; 2359 va_start (args, format); 2360 print_spaces_filtered (spaces, gdb_stdout); 2361 vfprintf_filtered (gdb_stdout, format, args); 2362 va_end (args); 2363 } 2364 2365 /* Easy -- but watch out! 2366 2367 This routine is *not* a replacement for puts()! puts() appends a newline. 2368 This one doesn't, and had better not! */ 2369 2370 void 2371 puts_filtered (const char *string) 2372 { 2373 fputs_filtered (string, gdb_stdout); 2374 } 2375 2376 void 2377 puts_unfiltered (const char *string) 2378 { 2379 fputs_unfiltered (string, gdb_stdout); 2380 } 2381 2382 /* Return a pointer to N spaces and a null. The pointer is good 2383 until the next call to here. */ 2384 char * 2385 n_spaces (int n) 2386 { 2387 char *t; 2388 static char *spaces = 0; 2389 static int max_spaces = -1; 2390 2391 if (n > max_spaces) 2392 { 2393 if (spaces) 2394 xfree (spaces); 2395 spaces = (char *) xmalloc (n + 1); 2396 for (t = spaces + n; t != spaces;) 2397 *--t = ' '; 2398 spaces[n] = '\0'; 2399 max_spaces = n; 2400 } 2401 2402 return spaces + max_spaces - n; 2403 } 2404 2405 /* Print N spaces. */ 2406 void 2407 print_spaces_filtered (int n, struct ui_file *stream) 2408 { 2409 fputs_filtered (n_spaces (n), stream); 2410 } 2411 2412 /* C++/ObjC demangler stuff. */ 2413 2414 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language 2415 LANG, using demangling args ARG_MODE, and print it filtered to STREAM. 2416 If the name is not mangled, or the language for the name is unknown, or 2417 demangling is off, the name is printed in its "raw" form. */ 2418 2419 void 2420 fprintf_symbol_filtered (struct ui_file *stream, char *name, 2421 enum language lang, int arg_mode) 2422 { 2423 char *demangled; 2424 2425 if (name != NULL) 2426 { 2427 /* If user wants to see raw output, no problem. */ 2428 if (!demangle) 2429 { 2430 fputs_filtered (name, stream); 2431 } 2432 else 2433 { 2434 demangled = language_demangle (language_def (lang), name, arg_mode); 2435 fputs_filtered (demangled ? demangled : name, stream); 2436 if (demangled != NULL) 2437 { 2438 xfree (demangled); 2439 } 2440 } 2441 } 2442 } 2443 2444 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any 2445 differences in whitespace. Returns 0 if they match, non-zero if they 2446 don't (slightly different than strcmp()'s range of return values). 2447 2448 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO". 2449 This "feature" is useful when searching for matching C++ function names 2450 (such as if the user types 'break FOO', where FOO is a mangled C++ 2451 function). */ 2452 2453 int 2454 strcmp_iw (const char *string1, const char *string2) 2455 { 2456 while ((*string1 != '\0') && (*string2 != '\0')) 2457 { 2458 while (isspace (*string1)) 2459 { 2460 string1++; 2461 } 2462 while (isspace (*string2)) 2463 { 2464 string2++; 2465 } 2466 if (*string1 != *string2) 2467 { 2468 break; 2469 } 2470 if (*string1 != '\0') 2471 { 2472 string1++; 2473 string2++; 2474 } 2475 } 2476 return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0'); 2477 } 2478 2479 /* This is like strcmp except that it ignores whitespace and treats 2480 '(' as the first non-NULL character in terms of ordering. Like 2481 strcmp (and unlike strcmp_iw), it returns negative if STRING1 < 2482 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2 2483 according to that ordering. 2484 2485 If a list is sorted according to this function and if you want to 2486 find names in the list that match some fixed NAME according to 2487 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right 2488 where this function would put NAME. 2489 2490 Here are some examples of why using strcmp to sort is a bad idea: 2491 2492 Whitespace example: 2493 2494 Say your partial symtab contains: "foo<char *>", "goo". Then, if 2495 we try to do a search for "foo<char*>", strcmp will locate this 2496 after "foo<char *>" and before "goo". Then lookup_partial_symbol 2497 will start looking at strings beginning with "goo", and will never 2498 see the correct match of "foo<char *>". 2499 2500 Parenthesis example: 2501 2502 In practice, this is less like to be an issue, but I'll give it a 2503 shot. Let's assume that '$' is a legitimate character to occur in 2504 symbols. (Which may well even be the case on some systems.) Then 2505 say that the partial symbol table contains "foo$" and "foo(int)". 2506 strcmp will put them in this order, since '$' < '('. Now, if the 2507 user searches for "foo", then strcmp will sort "foo" before "foo$". 2508 Then lookup_partial_symbol will notice that strcmp_iw("foo$", 2509 "foo") is false, so it won't proceed to the actual match of 2510 "foo(int)" with "foo". */ 2511 2512 int 2513 strcmp_iw_ordered (const char *string1, const char *string2) 2514 { 2515 while ((*string1 != '\0') && (*string2 != '\0')) 2516 { 2517 while (isspace (*string1)) 2518 { 2519 string1++; 2520 } 2521 while (isspace (*string2)) 2522 { 2523 string2++; 2524 } 2525 if (*string1 != *string2) 2526 { 2527 break; 2528 } 2529 if (*string1 != '\0') 2530 { 2531 string1++; 2532 string2++; 2533 } 2534 } 2535 2536 switch (*string1) 2537 { 2538 /* Characters are non-equal unless they're both '\0'; we want to 2539 make sure we get the comparison right according to our 2540 comparison in the cases where one of them is '\0' or '('. */ 2541 case '\0': 2542 if (*string2 == '\0') 2543 return 0; 2544 else 2545 return -1; 2546 case '(': 2547 if (*string2 == '\0') 2548 return 1; 2549 else 2550 return -1; 2551 default: 2552 if (*string2 == '(') 2553 return 1; 2554 else 2555 return *string1 - *string2; 2556 } 2557 } 2558 2559 /* A simple comparison function with opposite semantics to strcmp. */ 2560 2561 int 2562 streq (const char *lhs, const char *rhs) 2563 { 2564 return !strcmp (lhs, rhs); 2565 } 2566 2567 2568 /* 2569 ** subset_compare() 2570 ** Answer whether string_to_compare is a full or partial match to 2571 ** template_string. The partial match must be in sequence starting 2572 ** at index 0. 2573 */ 2574 int 2575 subset_compare (char *string_to_compare, char *template_string) 2576 { 2577 int match; 2578 if (template_string != (char *) NULL && string_to_compare != (char *) NULL 2579 && strlen (string_to_compare) <= strlen (template_string)) 2580 match = 2581 (strncmp 2582 (template_string, string_to_compare, strlen (string_to_compare)) == 0); 2583 else 2584 match = 0; 2585 return match; 2586 } 2587 2588 2589 static void pagination_on_command (char *arg, int from_tty); 2590 static void 2591 pagination_on_command (char *arg, int from_tty) 2592 { 2593 pagination_enabled = 1; 2594 } 2595 2596 static void pagination_on_command (char *arg, int from_tty); 2597 static void 2598 pagination_off_command (char *arg, int from_tty) 2599 { 2600 pagination_enabled = 0; 2601 } 2602 2603 2604 void 2605 initialize_utils (void) 2606 { 2607 struct cmd_list_element *c; 2608 2609 c = add_set_cmd ("width", class_support, var_uinteger, &chars_per_line, 2610 "Set number of characters gdb thinks are in a line.", 2611 &setlist); 2612 add_show_from_set (c, &showlist); 2613 set_cmd_sfunc (c, set_width_command); 2614 2615 c = add_set_cmd ("height", class_support, var_uinteger, &lines_per_page, 2616 "Set number of lines gdb thinks are in a page.", &setlist); 2617 add_show_from_set (c, &showlist); 2618 set_cmd_sfunc (c, set_height_command); 2619 2620 init_page_info (); 2621 2622 add_show_from_set 2623 (add_set_cmd ("demangle", class_support, var_boolean, 2624 (char *) &demangle, 2625 "Set demangling of encoded C++/ObjC names when displaying symbols.", 2626 &setprintlist), &showprintlist); 2627 2628 add_show_from_set 2629 (add_set_cmd ("pagination", class_support, 2630 var_boolean, (char *) &pagination_enabled, 2631 "Set state of pagination.", &setlist), &showlist); 2632 2633 if (xdb_commands) 2634 { 2635 add_com ("am", class_support, pagination_on_command, 2636 "Enable pagination"); 2637 add_com ("sm", class_support, pagination_off_command, 2638 "Disable pagination"); 2639 } 2640 2641 add_show_from_set 2642 (add_set_cmd ("sevenbit-strings", class_support, var_boolean, 2643 (char *) &sevenbit_strings, 2644 "Set printing of 8-bit characters in strings as \\nnn.", 2645 &setprintlist), &showprintlist); 2646 2647 add_show_from_set 2648 (add_set_cmd ("asm-demangle", class_support, var_boolean, 2649 (char *) &asm_demangle, 2650 "Set demangling of C++/ObjC names in disassembly listings.", 2651 &setprintlist), &showprintlist); 2652 } 2653 2654 /* Machine specific function to handle SIGWINCH signal. */ 2655 2656 #ifdef SIGWINCH_HANDLER_BODY 2657 SIGWINCH_HANDLER_BODY 2658 #endif 2659 /* print routines to handle variable size regs, etc. */ 2660 /* temporary storage using circular buffer */ 2661 #define NUMCELLS 16 2662 #define CELLSIZE 32 2663 static char * 2664 get_cell (void) 2665 { 2666 static char buf[NUMCELLS][CELLSIZE]; 2667 static int cell = 0; 2668 if (++cell >= NUMCELLS) 2669 cell = 0; 2670 return buf[cell]; 2671 } 2672 2673 int 2674 strlen_paddr (void) 2675 { 2676 return (TARGET_ADDR_BIT / 8 * 2); 2677 } 2678 2679 char * 2680 paddr (CORE_ADDR addr) 2681 { 2682 return phex (addr, TARGET_ADDR_BIT / 8); 2683 } 2684 2685 char * 2686 paddr_nz (CORE_ADDR addr) 2687 { 2688 return phex_nz (addr, TARGET_ADDR_BIT / 8); 2689 } 2690 2691 static void 2692 decimal2str (char *paddr_str, char *sign, ULONGEST addr) 2693 { 2694 /* steal code from valprint.c:print_decimal(). Should this worry 2695 about the real size of addr as the above does? */ 2696 unsigned long temp[3]; 2697 int i = 0; 2698 do 2699 { 2700 temp[i] = addr % (1000 * 1000 * 1000); 2701 addr /= (1000 * 1000 * 1000); 2702 i++; 2703 } 2704 while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0]))); 2705 switch (i) 2706 { 2707 case 1: 2708 sprintf (paddr_str, "%s%lu", sign, temp[0]); 2709 break; 2710 case 2: 2711 sprintf (paddr_str, "%s%lu%09lu", sign, temp[1], temp[0]); 2712 break; 2713 case 3: 2714 sprintf (paddr_str, "%s%lu%09lu%09lu", sign, temp[2], temp[1], temp[0]); 2715 break; 2716 default: 2717 internal_error (__FILE__, __LINE__, 2718 "failed internal consistency check"); 2719 } 2720 } 2721 2722 char * 2723 paddr_u (CORE_ADDR addr) 2724 { 2725 char *paddr_str = get_cell (); 2726 decimal2str (paddr_str, "", addr); 2727 return paddr_str; 2728 } 2729 2730 char * 2731 paddr_d (LONGEST addr) 2732 { 2733 char *paddr_str = get_cell (); 2734 if (addr < 0) 2735 decimal2str (paddr_str, "-", -addr); 2736 else 2737 decimal2str (paddr_str, "", addr); 2738 return paddr_str; 2739 } 2740 2741 /* eliminate warning from compiler on 32-bit systems */ 2742 static int thirty_two = 32; 2743 2744 char * 2745 phex (ULONGEST l, int sizeof_l) 2746 { 2747 char *str; 2748 switch (sizeof_l) 2749 { 2750 case 8: 2751 str = get_cell (); 2752 sprintf (str, "%08lx%08lx", 2753 (unsigned long) (l >> thirty_two), 2754 (unsigned long) (l & 0xffffffff)); 2755 break; 2756 case 4: 2757 str = get_cell (); 2758 sprintf (str, "%08lx", (unsigned long) l); 2759 break; 2760 case 2: 2761 str = get_cell (); 2762 sprintf (str, "%04x", (unsigned short) (l & 0xffff)); 2763 break; 2764 default: 2765 str = phex (l, sizeof (l)); 2766 break; 2767 } 2768 return str; 2769 } 2770 2771 char * 2772 phex_nz (ULONGEST l, int sizeof_l) 2773 { 2774 char *str; 2775 switch (sizeof_l) 2776 { 2777 case 8: 2778 { 2779 unsigned long high = (unsigned long) (l >> thirty_two); 2780 str = get_cell (); 2781 if (high == 0) 2782 sprintf (str, "%lx", (unsigned long) (l & 0xffffffff)); 2783 else 2784 sprintf (str, "%lx%08lx", high, (unsigned long) (l & 0xffffffff)); 2785 break; 2786 } 2787 case 4: 2788 str = get_cell (); 2789 sprintf (str, "%lx", (unsigned long) l); 2790 break; 2791 case 2: 2792 str = get_cell (); 2793 sprintf (str, "%x", (unsigned short) (l & 0xffff)); 2794 break; 2795 default: 2796 str = phex_nz (l, sizeof (l)); 2797 break; 2798 } 2799 return str; 2800 } 2801 2802 2803 /* Convert a CORE_ADDR into a string. */ 2804 const char * 2805 core_addr_to_string (const CORE_ADDR addr) 2806 { 2807 char *str = get_cell (); 2808 strcpy (str, "0x"); 2809 strcat (str, phex (addr, sizeof (addr))); 2810 return str; 2811 } 2812 2813 const char * 2814 core_addr_to_string_nz (const CORE_ADDR addr) 2815 { 2816 char *str = get_cell (); 2817 strcpy (str, "0x"); 2818 strcat (str, phex_nz (addr, sizeof (addr))); 2819 return str; 2820 } 2821 2822 /* Convert a string back into a CORE_ADDR. */ 2823 CORE_ADDR 2824 string_to_core_addr (const char *my_string) 2825 { 2826 CORE_ADDR addr = 0; 2827 if (my_string[0] == '0' && tolower (my_string[1]) == 'x') 2828 { 2829 /* Assume that it is in decimal. */ 2830 int i; 2831 for (i = 2; my_string[i] != '\0'; i++) 2832 { 2833 if (isdigit (my_string[i])) 2834 addr = (my_string[i] - '0') + (addr * 16); 2835 else if (isxdigit (my_string[i])) 2836 addr = (tolower (my_string[i]) - 'a' + 0xa) + (addr * 16); 2837 else 2838 internal_error (__FILE__, __LINE__, "invalid hex"); 2839 } 2840 } 2841 else 2842 { 2843 /* Assume that it is in decimal. */ 2844 int i; 2845 for (i = 0; my_string[i] != '\0'; i++) 2846 { 2847 if (isdigit (my_string[i])) 2848 addr = (my_string[i] - '0') + (addr * 10); 2849 else 2850 internal_error (__FILE__, __LINE__, "invalid decimal"); 2851 } 2852 } 2853 return addr; 2854 } 2855 2856 char * 2857 gdb_realpath (const char *filename) 2858 { 2859 /* Method 1: The system has a compile time upper bound on a filename 2860 path. Use that and realpath() to canonicalize the name. This is 2861 the most common case. Note that, if there isn't a compile time 2862 upper bound, you want to avoid realpath() at all costs. */ 2863 #if defined(HAVE_REALPATH) 2864 { 2865 # if defined (PATH_MAX) 2866 char buf[PATH_MAX]; 2867 # define USE_REALPATH 2868 # elif defined (MAXPATHLEN) 2869 char buf[MAXPATHLEN]; 2870 # define USE_REALPATH 2871 # endif 2872 # if defined (USE_REALPATH) 2873 const char *rp = realpath (filename, buf); 2874 if (rp == NULL) 2875 rp = filename; 2876 return xstrdup (rp); 2877 # endif 2878 } 2879 #endif /* HAVE_REALPATH */ 2880 2881 /* Method 2: The host system (i.e., GNU) has the function 2882 canonicalize_file_name() which malloc's a chunk of memory and 2883 returns that, use that. */ 2884 #if defined(HAVE_CANONICALIZE_FILE_NAME) 2885 { 2886 char *rp = canonicalize_file_name (filename); 2887 if (rp == NULL) 2888 return xstrdup (filename); 2889 else 2890 return rp; 2891 } 2892 #endif 2893 2894 /* FIXME: cagney/2002-11-13: 2895 2896 Method 2a: Use realpath() with a NULL buffer. Some systems, due 2897 to the problems described in in method 3, have modified their 2898 realpath() implementation so that it will allocate a buffer when 2899 NULL is passed in. Before this can be used, though, some sort of 2900 configure time test would need to be added. Otherwize the code 2901 will likely core dump. */ 2902 2903 /* Method 3: Now we're getting desperate! The system doesn't have a 2904 compile time buffer size and no alternative function. Query the 2905 OS, using pathconf(), for the buffer limit. Care is needed 2906 though, some systems do not limit PATH_MAX (return -1 for 2907 pathconf()) making it impossible to pass a correctly sized buffer 2908 to realpath() (it could always overflow). On those systems, we 2909 skip this. */ 2910 #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA) 2911 { 2912 /* Find out the max path size. */ 2913 long path_max = pathconf ("/", _PC_PATH_MAX); 2914 if (path_max > 0) 2915 { 2916 /* PATH_MAX is bounded. */ 2917 char *buf = alloca (path_max); 2918 char *rp = realpath (filename, buf); 2919 return xstrdup (rp ? rp : filename); 2920 } 2921 } 2922 #endif 2923 2924 /* This system is a lost cause, just dup the buffer. */ 2925 return xstrdup (filename); 2926 } 2927 2928 /* Return a copy of FILENAME, with its directory prefix canonicalized 2929 by gdb_realpath. */ 2930 2931 char * 2932 xfullpath (const char *filename) 2933 { 2934 const char *base_name = lbasename (filename); 2935 char *dir_name; 2936 char *real_path; 2937 char *result; 2938 2939 /* Extract the basename of filename, and return immediately 2940 a copy of filename if it does not contain any directory prefix. */ 2941 if (base_name == filename) 2942 return xstrdup (filename); 2943 2944 dir_name = alloca ((size_t) (base_name - filename + 2)); 2945 /* Allocate enough space to store the dir_name + plus one extra 2946 character sometimes needed under Windows (see below), and 2947 then the closing \000 character */ 2948 strncpy (dir_name, filename, base_name - filename); 2949 dir_name[base_name - filename] = '\000'; 2950 2951 #ifdef HAVE_DOS_BASED_FILE_SYSTEM 2952 /* We need to be careful when filename is of the form 'd:foo', which 2953 is equivalent of d:./foo, which is totally different from d:/foo. */ 2954 if (strlen (dir_name) == 2 && isalpha (dir_name[0]) && dir_name[1] == ':') 2955 { 2956 dir_name[2] = '.'; 2957 dir_name[3] = '\000'; 2958 } 2959 #endif 2960 2961 /* Canonicalize the directory prefix, and build the resulting 2962 filename. If the dirname realpath already contains an ending 2963 directory separator, avoid doubling it. */ 2964 real_path = gdb_realpath (dir_name); 2965 if (IS_DIR_SEPARATOR (real_path[strlen (real_path) - 1])) 2966 result = concat (real_path, base_name, NULL); 2967 else 2968 result = concat (real_path, SLASH_STRING, base_name, NULL); 2969 2970 xfree (real_path); 2971 return result; 2972 } 2973 2974 2975 /* This is the 32-bit CRC function used by the GNU separate debug 2976 facility. An executable may contain a section named 2977 .gnu_debuglink, which holds the name of a separate executable file 2978 containing its debug info, and a checksum of that file's contents, 2979 computed using this function. */ 2980 unsigned long 2981 gnu_debuglink_crc32 (unsigned long crc, unsigned char *buf, size_t len) 2982 { 2983 static const unsigned long crc32_table[256] = { 2984 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 2985 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 2986 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 2987 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 2988 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, 2989 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 2990 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 2991 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 2992 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 2993 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, 2994 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 2995 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 2996 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 2997 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 2998 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, 2999 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, 3000 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 3001 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, 3002 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 3003 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 3004 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 3005 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 3006 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, 3007 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, 3008 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 3009 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 3010 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 3011 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 3012 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, 3013 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 3014 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 3015 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 3016 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 3017 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, 3018 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 3019 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 3020 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 3021 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 3022 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, 3023 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, 3024 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 3025 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, 3026 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 3027 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 3028 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, 3029 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 3030 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 3031 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, 3032 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 3033 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 3034 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 3035 0x2d02ef8d 3036 }; 3037 unsigned char *end; 3038 3039 crc = ~crc & 0xffffffff; 3040 for (end = buf + len; buf < end; ++buf) 3041 crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8); 3042 return ~crc & 0xffffffff;; 3043 } 3044 3045 ULONGEST 3046 align_up (ULONGEST v, int n) 3047 { 3048 /* Check that N is really a power of two. */ 3049 gdb_assert (n && (n & (n-1)) == 0); 3050 return (v + n - 1) & -n; 3051 } 3052 3053 ULONGEST 3054 align_down (ULONGEST v, int n) 3055 { 3056 /* Check that N is really a power of two. */ 3057 gdb_assert (n && (n & (n-1)) == 0); 3058 return (v & -n); 3059 } 3060