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