gdb/defs.h

   1 /* Basic, host-specific, and target-specific definitions for GDB.
   2    Copyright (C) 1986, 1989, 1991 Free Software Foundation, Inc.
   3
   4 This file is part of GDB.
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 #if !defined (DEFS_H)
  21 #define DEFS_H 1
  22
  23 #include <stdio.h>
  24
  25 /* First include ansidecl.h so we can use the various macro definitions
  26    here and in all subsequent file inclusions.  */
  27
  28 #include "ansidecl.h"
  29
  30 /* An address in the program being debugged.  Host byte order.  */
  31 #ifndef CORE_ADDR_TYPE
  32 typedef unsigned int CORE_ADDR;
  33 #else
  34 typedef CORE_ADDR_TYPE CORE_ADDR;
  35 #endif
  36
  37 #define min(a, b) ((a) < (b) ? (a) : (b))
  38 #define max(a, b) ((a) > (b) ? (a) : (b))
  39
  40 /* Gdb does *lots* of string compares.  Use macros to speed them up by
  41    avoiding function calls if the first characters are not the same. */
  42
  43 #define STRCMP(a,b) (*(a) == *(b) ? strcmp ((a), (b)) : (int)*(a) - (int)*(b))
  44 #define STREQ(a,b) (*(a) == *(b) ? !strcmp ((a), (b)) : 0)
  45 #define STREQN(a,b,c) (*(a) == *(b) ? !strncmp ((a), (b), (c)) : 0)
  46
  47 /* The character GNU C++ uses to build identifiers that must be unique from
  48    the program's identifiers (such as $this and $$vptr).  */
  49 #define CPLUS_MARKER '$'        /* May be overridden to '.' for SysV */
  50
  51 #include <errno.h>              /* System call error return status */
  52
  53 extern int quit_flag;
  54 extern int immediate_quit;
  55 extern int sevenbit_strings;
  56
  57 extern void
  58 quit PARAMS ((void));
  59
  60 #define QUIT { if (quit_flag) quit (); }
  61
  62 /* Command classes are top-level categories into which commands are broken
  63    down for "help" purposes.
  64    Notes on classes: class_alias is for alias commands which are not
  65    abbreviations of the original command.  class-pseudo is for commands
  66    which are not really commands nor help topics ("stop").  */
  67
  68 enum command_class
  69 {
  70   /* Special args to help_list */
  71   all_classes = -2, all_commands = -1,
  72   /* Classes of commands */
  73   no_class = -1, class_run = 0, class_vars, class_stack,
  74   class_files, class_support, class_info, class_breakpoint,
  75   class_alias, class_obscure, class_user, class_maintenance,
  76   class_pseudo
  77 };
  78
  79 /* Languages represented in the symbol table and elsewhere.
  80    This should probably be in language.h, but since enum's can't
  81    be forward declared to satisfy opaque references before their
  82    actual definition, needs to be here. */
  83
  84 enum language
  85 {
  86    language_unknown,            /* Language not known */
  87    language_auto,               /* Placeholder for automatic setting */
  88    language_c,                  /* C */
  89    language_cplus,              /* C++ */
  90    language_chill,              /* Chill */
  91    language_m2                  /* Modula-2 */
  92 };
  93
  94 /* the cleanup list records things that have to be undone
  95    if an error happens (descriptors to be closed, memory to be freed, etc.)
  96    Each link in the chain records a function to call and an
  97    argument to give it.
  98
  99    Use make_cleanup to add an element to the cleanup chain.
 100    Use do_cleanups to do all cleanup actions back to a given
 101    point in the chain.  Use discard_cleanups to remove cleanups
 102    from the chain back to a given point, not doing them.  */
 103
 104 struct cleanup
 105 {
 106   struct cleanup *next;
 107   void (*function) PARAMS ((PTR));
 108   PTR arg;
 109 };
 110
 111 /* From blockframe.c */
 112
 113 extern int
 114 inside_entry_func PARAMS ((CORE_ADDR));
 115
 116 extern int
 117 inside_entry_file PARAMS ((CORE_ADDR addr));
 118
 119 extern int
 120 inside_main_func PARAMS ((CORE_ADDR pc));
 121
 122 /* From ch-lang.c, for the moment. (FIXME) */
 123
 124 extern char *
 125 chill_demangle PARAMS ((const char *));
 126
 127 /* From libiberty.a */
 128
 129 extern char *
 130 cplus_demangle PARAMS ((const char *, int));
 131
 132 extern char *
 133 cplus_mangle_opname PARAMS ((char *, int));
 134
 135 /* From libmmalloc.a (memory mapped malloc library) */
 136
 137 extern PTR
 138 mmalloc_attach PARAMS ((int, PTR));
 139
 140 extern PTR
 141 mmalloc_detach PARAMS ((PTR));
 142
 143 extern PTR
 144 mmalloc PARAMS ((PTR, long));
 145
 146 extern PTR
 147 mrealloc PARAMS ((PTR, PTR, long));
 148
 149 extern void
 150 mfree PARAMS ((PTR, PTR));
 151
 152 extern int
 153 mmalloc_setkey PARAMS ((PTR, int, PTR));
 154
 155 extern PTR
 156 mmalloc_getkey PARAMS ((PTR, int));
 157
 158 /* From utils.c */
 159
 160 extern int
 161 strcmp_iw PARAMS ((const char *, const char *));
 162
 163 extern char *
 164 safe_strerror PARAMS ((int));
 165
 166 extern char *
 167 safe_strsignal PARAMS ((int));
 168
 169 extern void
 170 init_malloc PARAMS ((void *));
 171
 172 extern void
 173 request_quit PARAMS ((int));
 174
 175 extern void
 176 do_cleanups PARAMS ((struct cleanup *));
 177
 178 extern void
 179 discard_cleanups PARAMS ((struct cleanup *));
 180
 181 /* The bare make_cleanup function is one of those rare beasts that
 182    takes almost any type of function as the first arg and anything that
 183    will fit in a "void *" as the second arg.
 184
 185    Should be, once all calls and called-functions are cleaned up:
 186 extern struct cleanup *
 187 make_cleanup PARAMS ((void (*function) (void *), void *));
 188
 189    Until then, lint and/or various type-checking compiler options will
 190    complain about make_cleanup calls.  It'd be wrong to just cast things,
 191    since the type actually passed when the function is called would be
 192    wrong.  */
 193
 194 extern struct cleanup *
 195 make_cleanup ();
 196
 197 extern struct cleanup *
 198 save_cleanups PARAMS ((void));
 199
 200 extern void
 201 restore_cleanups PARAMS ((struct cleanup *));
 202
 203 extern void
 204 free_current_contents PARAMS ((char **));
 205
 206 extern void
 207 null_cleanup PARAMS ((char **));
 208
 209 extern int
 210 myread PARAMS ((int, char *, int));
 211
 212 extern int
 213 query ();
 214
 215 extern void
 216 begin_line PARAMS ((void));
 217
 218 extern void
 219 wrap_here PARAMS ((char *));
 220
 221 extern void
 222 reinitialize_more_filter PARAMS ((void));
 223
 224 typedef FILE GDB_FILE;
 225 #define gdb_stdout stdout
 226 #define gdb_stderr stderr
 227
 228 extern int
 229 print_insn PARAMS ((CORE_ADDR, GDB_FILE *));
 230
 231 extern void
 232 gdb_flush PARAMS ((GDB_FILE *));
 233
 234 extern GDB_FILE *
 235 gdb_fopen PARAMS ((char * name, char * mode));
 236
 237 extern void
 238 fputs_filtered PARAMS ((const char *, GDB_FILE *));
 239
 240 extern void
 241 fputs_unfiltered PARAMS ((const char *, GDB_FILE *));
 242
 243 extern void
 244 fputc_unfiltered PARAMS ((int, GDB_FILE *));
 245
 246 extern void
 247 putc_unfiltered PARAMS ((int));
 248
 249 #define putchar_unfiltered(C)  putc_unfiltered(C)
 250
 251 extern void
 252 puts_filtered PARAMS ((char *));
 253
 254 extern void
 255 puts_unfiltered PARAMS ((char *));
 256
 257 extern void
 258 vprintf_filtered ();
 259
 260 extern void
 261 vfprintf_filtered ();
 262
 263 extern void
 264 fprintf_filtered ();
 265
 266 extern void
 267 fprintfi_filtered ();
 268
 269 extern void
 270 printf_filtered ();
 271
 272 extern void
 273 printfi_filtered ();
 274
 275 extern void
 276 vprintf_unfiltered ();
 277
 278 extern void
 279 vfprintf_unfiltered ();
 280
 281 extern void
 282 fprintf_unfiltered ();
 283
 284 extern void
 285 printf_unfiltered ();
 286
 287 extern void
 288 print_spaces PARAMS ((int, GDB_FILE *));
 289
 290 extern void
 291 print_spaces_filtered PARAMS ((int, GDB_FILE *));
 292
 293 extern char *
 294 n_spaces PARAMS ((int));
 295
 296 extern void
 297 gdb_printchar PARAMS ((int, GDB_FILE *, int));
 298
 299 /* Print a host address.  */
 300 extern void gdb_print_address PARAMS ((void *, GDB_FILE *));
 301
 302 extern void
 303 fprintf_symbol_filtered PARAMS ((GDB_FILE *, char *, enum language, int));
 304
 305 extern void
 306 perror_with_name PARAMS ((char *));
 307
 308 extern void
 309 print_sys_errmsg PARAMS ((char *, int));
 310
 311 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 312    "const char *" in unistd.h, so we can't declare the argument
 313    as "char *".  */
 314
 315 extern char *
 316 re_comp PARAMS ((const char *));
 317
 318 /* From symfile.c */
 319
 320 extern void
 321 symbol_file_command PARAMS ((char *, int));
 322
 323 /* From main.c */
 324
 325 extern char *
 326 skip_quoted PARAMS ((char *));
 327
 328 extern char *
 329 gdb_readline PARAMS ((char *));
 330
 331 extern char *
 332 command_line_input PARAMS ((char *, int));
 333
 334 extern void
 335 print_prompt PARAMS ((void));
 336
 337 extern int
 338 batch_mode PARAMS ((void));
 339
 340 extern int
 341 input_from_terminal_p PARAMS ((void));
 342
 343 /* From printcmd.c */
 344
 345 extern void
 346 set_next_address PARAMS ((CORE_ADDR));
 347
 348 extern void
 349 print_address_symbolic PARAMS ((CORE_ADDR, GDB_FILE *, int, char *));
 350
 351 extern void
 352 print_address_numeric PARAMS ((CORE_ADDR, GDB_FILE *));
 353
 354 extern void
 355 print_address PARAMS ((CORE_ADDR, GDB_FILE *));
 356
 357 /* From source.c */
 358
 359 extern int
 360 openp PARAMS ((char *, int, char *, int, int, char **));
 361
 362 extern void
 363 mod_path PARAMS ((char *, char **));
 364
 365 extern void
 366 directory_command PARAMS ((char *, int));
 367
 368 extern void
 369 init_source_path PARAMS ((void));
 370
 371 /* From findvar.c */
 372
 373 extern int
 374 read_relative_register_raw_bytes PARAMS ((int, char *));
 375
 376 /* From readline (but not in any readline .h files).  */
 377
 378 extern char *
 379 tilde_expand PARAMS ((char *));
 380
 381 /* Structure for saved commands lines
 382    (for breakpoints, defined commands, etc).  */
 383
 384 struct command_line
 385 {
 386   struct command_line *next;
 387   char *line;
 388 };
 389
 390 extern struct command_line *
 391 read_command_lines PARAMS ((void));
 392
 393 extern void
 394 free_command_lines PARAMS ((struct command_line **));
 395
 396 /* String containing the current directory (what getwd would return).  */
 397
 398 extern char *current_directory;
 399
 400 /* Default radixes for input and output.  Only some values supported.  */
 401 extern unsigned input_radix;
 402 extern unsigned output_radix;
 403
 404 /* Possibilities for prettyprint parameters to routines which print
 405    things.  Like enum language, this should be in value.h, but needs
 406    to be here for the same reason.  FIXME:  If we can eliminate this
 407    as an arg to LA_VAL_PRINT, then we can probably move it back to
 408    value.h. */
 409
 410 enum val_prettyprint
 411 {
 412   Val_no_prettyprint = 0,
 413   Val_prettyprint,
 414   /* Use the default setting which the user has specified.  */
 415   Val_pretty_default
 416 };
 417
 418 \f
 419 /* Host machine definition.  This will be a symlink to one of the
 420    xm-*.h files, built by the `configure' script.  */
 421
 422 #include "xm.h"
 423
 424 /* Native machine support.  This will be a symlink to one of the
 425    nm-*.h files, built by the `configure' script.  */
 426
 427 #include "nm.h"
 428
 429 /* If the xm.h file did not define the mode string used to open the
 430    files, assume that binary files are opened the same way as text
 431    files */
 432 #ifndef FOPEN_RB
 433 #include "fopen-same.h"
 434 #endif
 435
 436 /*
 437  * Allow things in gdb to be declared "const".  If compiling ANSI, it
 438  * just works.  If compiling with gcc but non-ansi, redefine to __const__.
 439  * If non-ansi, non-gcc, then eliminate "const" entirely, making those
 440  * objects be read-write rather than read-only.
 441  */
 442
 443 #ifndef const
 444 #ifndef __STDC__
 445 # ifdef __GNUC__
 446 #  define const __const__
 447 # else
 448 #  define const /*nothing*/
 449 # endif /* GNUC */
 450 #endif /* STDC */
 451 #endif /* const */
 452
 453 #ifndef volatile
 454 #ifndef __STDC__
 455 # ifdef __GNUC__
 456 #  define volatile __volatile__
 457 # else
 458 #  define volatile /*nothing*/
 459 # endif /* GNUC */
 460 #endif /* STDC */
 461 #endif /* volatile */
 462
 463 #if 1
 464 #define NORETURN /*nothing*/
 465 #else /* not 1 */
 466 /* FIXME: This is bogus.  Having "volatile void" mean a function doesn't
 467    return is a gcc extension and should be based on #ifdef __GNUC__.
 468    Also, as of Sep 93 I'm told gcc is changing the syntax for ansi
 469    reasons (so declaring exit here as "volatile void" and as "void" in
 470    a system header loses).  Using the new "__attributes__ ((noreturn));"
 471    syntax would lose for old versions of gcc; using
 472      typedef void exit_fn_type PARAMS ((int));
 473      volatile exit_fn_type exit;
 474    would win.  */
 475 /* Some compilers (many AT&T SVR4 compilers for instance), do not accept
 476    declarations of functions that never return (exit for instance) as
 477    "volatile void".  For such compilers "NORETURN" can be defined away
 478    to keep them happy */
 479
 480 #ifndef NORETURN
 481 # ifdef __lucid
 482 #   define NORETURN /*nothing*/
 483 # else
 484 #   define NORETURN volatile
 485 # endif
 486 #endif
 487 #endif /* not 1 */
 488
 489 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).  */
 490
 491 #if !defined (UINT_MAX)
 492 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 493 #endif
 494
 495 #if !defined (INT_MAX)
 496 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 497 #endif
 498
 499 #if !defined (INT_MIN)
 500 #define INT_MIN (-INT_MAX - 1)                  /* 0x80000000 for 32-bits */
 501 #endif
 502
 503 #if !defined (ULONG_MAX)
 504 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 505 #endif
 506
 507 #if !defined (LONG_MAX)
 508 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 509 #endif
 510
 511 /* Default to support for "long long" if the host compiler being used is gcc.
 512    Config files must define CC_HAS_LONG_LONG to use other host compilers
 513    that are capable of supporting "long long", and to cause gdb to use that
 514    support.  Not defining CC_HAS_LONG_LONG will suppress use of "long long"
 515    regardless of what compiler is used.
 516
 517    FIXME: For now, automatic selection of "long long" as the default when
 518    gcc is used is disabled, pending further testing.  Concerns include the
 519    impact on gdb performance and the universality of bugfree long long
 520    support on platforms that do have gcc.  Compiling with FORCE_LONG_LONG
 521    will select "long long" use for testing purposes.  -fnf */
 522
 523 #ifndef CC_HAS_LONG_LONG
 524 #  if defined (__GNUC__) && defined (FORCE_LONG_LONG) /* See FIXME above */
 525 #    define CC_HAS_LONG_LONG 1
 526 #  endif
 527 #endif
 528
 529 /* LONGEST should not be a typedef, because "unsigned LONGEST" needs to work.
 530    CC_HAS_LONG_LONG is defined if the host compiler supports "long long"
 531    variables and we wish to make use of that support.  */
 532
 533 #ifndef LONGEST
 534 #  ifdef CC_HAS_LONG_LONG
 535 #    define LONGEST long long
 536 #  else
 537 #    define LONGEST long
 538 #  endif
 539 #endif
 540
 541 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 542    arguments to a function, number in a value history, register number, etc.)
 543    where the value must not be larger than can fit in an int.  */
 544
 545 #ifndef longest_to_int
 546 #  ifdef CC_HAS_LONG_LONG
 547 #    define longest_to_int(x) (((x) > INT_MAX || (x) < INT_MIN) \
 548                                ? (error ("Value out of range."),0) : (int) (x))
 549 #  else
 550      /* Assume sizeof (int) == sizeof (long).  */
 551 #    define longest_to_int(x) ((int) (x))
 552 #  endif
 553 #endif
 554
 555 /* Assorted functions we can declare, now that const and volatile are
 556    defined.  */
 557
 558 extern char *
 559 savestring PARAMS ((const char *, int));
 560
 561 extern char *
 562 msavestring PARAMS ((void *, const char *, int));
 563
 564 extern char *
 565 strsave PARAMS ((const char *));
 566
 567 extern char *
 568 mstrsave PARAMS ((void *, const char *));
 569
 570 extern char *
 571 concat PARAMS ((char *, ...));
 572
 573 extern PTR
 574 xmalloc PARAMS ((long));
 575
 576 extern PTR
 577 xrealloc PARAMS ((PTR, long));
 578
 579 extern PTR
 580 xmmalloc PARAMS ((PTR, long));
 581
 582 extern PTR
 583 xmrealloc PARAMS ((PTR, PTR, long));
 584
 585 extern PTR
 586 mmalloc PARAMS ((PTR, long));
 587
 588 extern PTR
 589 mrealloc PARAMS ((PTR, PTR, long));
 590
 591 extern void
 592 mfree PARAMS ((PTR, PTR));
 593
 594 extern int
 595 mmcheck PARAMS ((PTR, void (*) (void)));
 596
 597 extern int
 598 mmtrace PARAMS ((void));
 599
 600 extern int
 601 parse_escape PARAMS ((char **));
 602
 603 extern const char * const reg_names[];
 604
 605 /* Message to be printed before the error message, when an error occurs.  */
 606
 607 extern char *error_pre_print;
 608
 609 /* Message to be printed before the warning message, when a warning occurs.  */
 610
 611 extern char *warning_pre_print;
 612
 613 extern NORETURN void                    /* Does not return to the caller.  */
 614 error ();
 615
 616 extern NORETURN void                    /* Does not return to the caller.  */
 617 fatal ();
 618
 619 extern NORETURN void                    /* Not specified as volatile in ... */
 620 exit PARAMS ((int));                    /* 4.10.4.3 */
 621
 622 extern NORETURN void                    /* Does not return to the caller.  */
 623 nomem PARAMS ((long));
 624
 625 /* Reasons for calling return_to_top_level.  */
 626 enum return_reason {
 627   /* User interrupt.  */
 628   RETURN_QUIT,
 629
 630   /* Any other error.  */
 631   RETURN_ERROR
 632 };
 633
 634 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 635 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 636 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 637 typedef int return_mask;
 638
 639 extern NORETURN void                    /* Does not return to the caller.  */
 640 return_to_top_level PARAMS ((enum return_reason));
 641
 642 extern int catch_errors PARAMS ((int (*) (char *), void *, char *,
 643                                  return_mask));
 644
 645 extern void
 646 warning_setup PARAMS ((void));
 647
 648 extern void
 649 warning ();
 650
 651 /* Global functions from other, non-gdb GNU thingies (libiberty for
 652    instance) */
 653
 654 extern char *
 655 basename PARAMS ((char *));
 656
 657 extern char *
 658 getenv PARAMS ((const char *));
 659
 660 extern char **
 661 buildargv PARAMS ((char *));
 662
 663 extern void
 664 freeargv PARAMS ((char **));
 665
 666 extern char *
 667 strerrno PARAMS ((int));
 668
 669 extern char *
 670 strsigno PARAMS ((int));
 671
 672 extern int
 673 errno_max PARAMS ((void));
 674
 675 extern int
 676 signo_max PARAMS ((void));
 677
 678 extern int
 679 strtoerrno PARAMS ((char *));
 680
 681 extern int
 682 strtosigno PARAMS ((char *));
 683
 684 extern char *
 685 strsignal PARAMS ((int));
 686
 687 /* From other system libraries */
 688
 689 #ifndef PSIGNAL_IN_SIGNAL_H
 690 extern void
 691 psignal PARAMS ((unsigned, const char *));
 692 #endif
 693
 694 /* For now, we can't include <stdlib.h> because it conflicts with
 695    "../include/getopt.h".  (FIXME)
 696
 697    However, if a function is defined in the ANSI C standard and a prototype
 698    for that function is defined and visible in any header file in an ANSI
 699    conforming environment, then that prototype must match the definition in
 700    the ANSI standard.  So we can just duplicate them here without conflict,
 701    since they must be the same in all conforming ANSI environments.  If
 702    these cause problems, then the environment is not ANSI conformant. */
 703
 704 #ifdef __STDC__
 705 #include <stddef.h>
 706 #endif
 707
 708 extern int
 709 fclose PARAMS ((GDB_FILE *stream));                             /* 4.9.5.1 */
 710
 711 extern void
 712 perror PARAMS ((const char *));                         /* 4.9.10.4 */
 713
 714 extern double
 715 atof PARAMS ((const char *nptr));                       /* 4.10.1.1 */
 716
 717 extern int
 718 atoi PARAMS ((const char *));                           /* 4.10.1.2 */
 719
 720 #ifndef MALLOC_INCOMPATIBLE
 721
 722 extern PTR
 723 malloc PARAMS ((size_t size));                          /* 4.10.3.3 */
 724
 725 extern PTR
 726 realloc PARAMS ((void *ptr, size_t size));              /* 4.10.3.4 */
 727
 728 extern void
 729 free PARAMS ((void *));                                 /* 4.10.3.2 */
 730
 731 #endif  /* MALLOC_INCOMPATIBLE */
 732
 733 extern void
 734 qsort PARAMS ((void *base, size_t nmemb,                /* 4.10.5.2 */
 735                size_t size,
 736                int (*comp)(const void *, const void *)));
 737
 738 #ifndef MEM_FNS_DECLARED        /* Some non-ANSI use void *, not char *.  */
 739 extern PTR
 740 memcpy PARAMS ((void *, const void *, size_t));         /* 4.11.2.1 */
 741
 742 extern int
 743 memcmp PARAMS ((const void *, const void *, size_t));   /* 4.11.4.1 */
 744 #endif
 745
 746 extern char *
 747 strchr PARAMS ((const char *, int));                    /* 4.11.5.2 */
 748
 749 extern char *
 750 strrchr PARAMS ((const char *, int));                   /* 4.11.5.5 */
 751
 752 extern char *
 753 strstr PARAMS ((const char *, const char *));           /* 4.11.5.7 */
 754
 755 extern char *
 756 strtok PARAMS ((char *, const char *));                 /* 4.11.5.8 */
 757
 758 #ifndef MEM_FNS_DECLARED        /* Some non-ANSI use void *, not char *.  */
 759 extern PTR
 760 memset PARAMS ((void *, int, size_t));                  /* 4.11.6.1 */
 761 #endif
 762
 763 extern char *
 764 strerror PARAMS ((int));                                /* 4.11.6.2 */
 765
 766 /* Various possibilities for alloca.  */
 767 #ifndef alloca
 768 # ifdef __GNUC__
 769 #  define alloca __builtin_alloca
 770 # else
 771 #  ifdef sparc
 772 #   include <alloca.h>          /* NOTE:  Doesn't declare alloca() */
 773 #  endif
 774 #  ifdef __STDC__
 775    extern void *alloca (size_t);
 776 #  else /* __STDC__ */
 777    extern char *alloca ();
 778 #  endif
 779 # endif
 780 #endif
 781
 782 /* TARGET_BYTE_ORDER and HOST_BYTE_ORDER must be defined to one of these.  */
 783
 784 #if !defined (BIG_ENDIAN)
 785 #define BIG_ENDIAN 4321
 786 #endif
 787
 788 #if !defined (LITTLE_ENDIAN)
 789 #define LITTLE_ENDIAN 1234
 790 #endif
 791
 792 /* Target-system-dependent parameters for GDB. */
 793
 794 /* Target machine definition.  This will be a symlink to one of the
 795    tm-*.h files, built by the `configure' script.  */
 796
 797 #include "tm.h"
 798
 799 /* Number of bits in a char or unsigned char for the target machine.
 800    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 801 #if !defined (TARGET_CHAR_BIT)
 802 #define TARGET_CHAR_BIT 8
 803 #endif
 804
 805 /* Number of bits in a short or unsigned short for the target machine. */
 806 #if !defined (TARGET_SHORT_BIT)
 807 #define TARGET_SHORT_BIT (2 * TARGET_CHAR_BIT)
 808 #endif
 809
 810 /* Number of bits in an int or unsigned int for the target machine. */
 811 #if !defined (TARGET_INT_BIT)
 812 #define TARGET_INT_BIT (4 * TARGET_CHAR_BIT)
 813 #endif
 814
 815 /* Number of bits in a long or unsigned long for the target machine. */
 816 #if !defined (TARGET_LONG_BIT)
 817 #define TARGET_LONG_BIT (4 * TARGET_CHAR_BIT)
 818 #endif
 819
 820 /* Number of bits in a long long or unsigned long long for the target machine. */
 821 #if !defined (TARGET_LONG_LONG_BIT)
 822 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 823 #endif
 824
 825 /* Number of bits in a float for the target machine. */
 826 #if !defined (TARGET_FLOAT_BIT)
 827 #define TARGET_FLOAT_BIT (4 * TARGET_CHAR_BIT)
 828 #endif
 829
 830 /* Number of bits in a double for the target machine. */
 831 #if !defined (TARGET_DOUBLE_BIT)
 832 #define TARGET_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 833 #endif
 834
 835 /* Number of bits in a long double for the target machine.  */
 836 #if !defined (TARGET_LONG_DOUBLE_BIT)
 837 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 838 #endif
 839
 840 /* Number of bits in a "complex" for the target machine. */
 841 #if !defined (TARGET_COMPLEX_BIT)
 842 #define TARGET_COMPLEX_BIT (2 * TARGET_FLOAT_BIT)
 843 #endif
 844
 845 /* Number of bits in a "double complex" for the target machine. */
 846 #if !defined (TARGET_DOUBLE_COMPLEX_BIT)
 847 #define TARGET_DOUBLE_COMPLEX_BIT (2 * TARGET_DOUBLE_BIT)
 848 #endif
 849
 850 /* Number of bits in a pointer for the target machine */
 851 #if !defined (TARGET_PTR_BIT)
 852 #define TARGET_PTR_BIT TARGET_INT_BIT
 853 #endif
 854
 855 /* If we picked up a copy of CHAR_BIT from a configuration file
 856    (which may get it by including <limits.h>) then use it to set
 857    the number of bits in a host char.  If not, use the same size
 858    as the target. */
 859
 860 #if defined (CHAR_BIT)
 861 #define HOST_CHAR_BIT CHAR_BIT
 862 #else
 863 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 864 #endif
 865
 866 /* The bit byte-order has to do just with numbering of bits in
 867    debugging symbols and such.  Conceptually, it's quite separate
 868    from byte/word byte order.  */
 869
 870 #if !defined (BITS_BIG_ENDIAN)
 871 #if TARGET_BYTE_ORDER == BIG_ENDIAN
 872 #define BITS_BIG_ENDIAN 1
 873 #endif /* Big endian.  */
 874
 875 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
 876 #define BITS_BIG_ENDIAN 0
 877 #endif /* Little endian.  */
 878 #endif /* BITS_BIG_ENDIAN not defined.  */
 879
 880 /* In findvar.c.  */
 881 LONGEST extract_signed_integer PARAMS ((void *, int));
 882 unsigned LONGEST extract_unsigned_integer PARAMS ((void *, int));
 883 CORE_ADDR extract_address PARAMS ((void *, int));
 884
 885 void store_signed_integer PARAMS ((void *, int, LONGEST));
 886 void store_unsigned_integer PARAMS ((void *, int, unsigned LONGEST));
 887 void store_address PARAMS ((void *, int, CORE_ADDR));
 888
 889 double extract_floating PARAMS ((void *, int));
 890 void store_floating PARAMS ((void *, int, double));
 891 \f
 892 /* On some machines there are bits in addresses which are not really
 893    part of the address, but are used by the kernel, the hardware, etc.
 894    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
 895    so we get a "real" address such as one would find in a symbol
 896    table.  This is used only for addresses of instructions, and even then
 897    I'm not sure it's used in all contexts.  It exists to deal with there
 898    being a few stray bits in the PC which would mislead us, not as some sort
 899    of generic thing to handle alignment or segmentation (it's possible it
 900    should be in TARGET_READ_PC instead).  */
 901 #if !defined (ADDR_BITS_REMOVE)
 902 #define ADDR_BITS_REMOVE(addr) (addr)
 903 #endif /* No ADDR_BITS_REMOVE.  */
 904
 905 /* From valops.c */
 906
 907 extern CORE_ADDR
 908 push_bytes PARAMS ((CORE_ADDR, char *, int));
 909
 910 extern CORE_ADDR
 911 push_word PARAMS ((CORE_ADDR, unsigned LONGEST));
 912
 913 /* Some parts of gdb might be considered optional, in the sense that they
 914    are not essential for being able to build a working, usable debugger
 915    for a specific environment.  For example, the maintenance commands
 916    are there for the benefit of gdb maintainers.  As another example,
 917    some environments really don't need gdb's that are able to read N
 918    different object file formats.  In order to make it possible (but
 919    not necessarily recommended) to build "stripped down" versions of
 920    gdb, the following defines control selective compilation of those
 921    parts of gdb which can be safely left out when necessary.  Note that
 922    the default is to include everything. */
 923
 924 #ifndef MAINTENANCE_CMDS
 925 #define MAINTENANCE_CMDS 1
 926 #endif
 927
 928 #endif /* !defined (DEFS_H) */