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 /* Baud rate specified for communication with serial target systems.  */
 357 extern char *baud_rate;
 358
 359 /* Possibilities for prettyprint parameters to routines which print
 360    things.  Like enum language, this should be in value.h, but needs
 361    to be here for the same reason.  FIXME:  If we can eliminate this
 362    as an arg to LA_VAL_PRINT, then we can probably move it back to
 363    value.h. */
 364
 365 enum val_prettyprint
 366 {
 367   Val_no_prettyprint = 0,
 368   Val_prettyprint,
 369   /* Use the default setting which the user has specified.  */
 370   Val_pretty_default
 371 };
 372
 373 \f
 374 /* Host machine definition.  This will be a symlink to one of the
 375    xm-*.h files, built by the `configure' script.  */
 376
 377 #include "xm.h"
 378
 379 /* Native machine support.  This will be a symlink to one of the
 380    nm-*.h files, built by the `configure' script.  */
 381
 382 #include "nm.h"
 383
 384 /* If the xm.h file did not define the mode string used to open the
 385    files, assume that binary files are opened the same way as text
 386    files */
 387 #ifndef FOPEN_RB
 388 #include "fopen-same.h"
 389 #endif
 390
 391 /*
 392  * Allow things in gdb to be declared "const".  If compiling ANSI, it
 393  * just works.  If compiling with gcc but non-ansi, redefine to __const__.
 394  * If non-ansi, non-gcc, then eliminate "const" entirely, making those
 395  * objects be read-write rather than read-only.
 396  */
 397
 398 #ifndef const
 399 #ifndef __STDC__
 400 # ifdef __GNUC__
 401 #  define const __const__
 402 # else
 403 #  define const /*nothing*/
 404 # endif /* GNUC */
 405 #endif /* STDC */
 406 #endif /* const */
 407
 408 #ifndef volatile
 409 #ifndef __STDC__
 410 # ifdef __GNUC__
 411 #  define volatile __volatile__
 412 # else
 413 #  define volatile /*nothing*/
 414 # endif /* GNUC */
 415 #endif /* STDC */
 416 #endif /* volatile */
 417
 418 #if 1
 419 #define NORETURN /*nothing*/
 420 #else /* not 1 */
 421 /* FIXME: This is bogus.  Having "volatile void" mean a function doesn't
 422    return is a gcc extension and should be based on #ifdef __GNUC__.
 423    Also, as of Sep 93 I'm told gcc is changing the syntax for ansi
 424    reasons (so declaring exit here as "volatile void" and as "void" in
 425    a system header loses).  Using the new "__attributes__ ((noreturn));"
 426    syntax would lose for old versions of gcc; using
 427      typedef void exit_fn_type PARAMS ((int));
 428      volatile exit_fn_type exit;
 429    would win.  */
 430 /* Some compilers (many AT&T SVR4 compilers for instance), do not accept
 431    declarations of functions that never return (exit for instance) as
 432    "volatile void".  For such compilers "NORETURN" can be defined away
 433    to keep them happy */
 434
 435 #ifndef NORETURN
 436 # ifdef __lucid
 437 #   define NORETURN /*nothing*/
 438 # else
 439 #   define NORETURN volatile
 440 # endif
 441 #endif
 442 #endif /* not 1 */
 443
 444 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).  */
 445
 446 #if !defined (UINT_MAX)
 447 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 448 #endif
 449
 450 #if !defined (INT_MAX)
 451 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 452 #endif
 453
 454 #if !defined (INT_MIN)
 455 #define INT_MIN (-INT_MAX - 1)                  /* 0x80000000 for 32-bits */
 456 #endif
 457
 458 #if !defined (ULONG_MAX)
 459 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 460 #endif
 461
 462 #if !defined (LONG_MAX)
 463 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 464 #endif
 465
 466 /* Number of bits in a char or unsigned char for the target machine.
 467    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 468 #if !defined (TARGET_CHAR_BIT)
 469 #define TARGET_CHAR_BIT 8
 470 #endif
 471
 472 /* Number of bits in a short or unsigned short for the target machine. */
 473 #if !defined (TARGET_SHORT_BIT)
 474 #define TARGET_SHORT_BIT (sizeof (short) * TARGET_CHAR_BIT)
 475 #endif
 476
 477 /* Number of bits in an int or unsigned int for the target machine. */
 478 #if !defined (TARGET_INT_BIT)
 479 #define TARGET_INT_BIT (sizeof (int) * TARGET_CHAR_BIT)
 480 #endif
 481
 482 /* Number of bits in a long or unsigned long for the target machine. */
 483 #if !defined (TARGET_LONG_BIT)
 484 #define TARGET_LONG_BIT (sizeof (long) * TARGET_CHAR_BIT)
 485 #endif
 486
 487 /* Number of bits in a long long or unsigned long long for the target machine. */
 488 #if !defined (TARGET_LONG_LONG_BIT)
 489 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 490 #endif
 491
 492 /* Number of bits in a float for the target machine. */
 493 #if !defined (TARGET_FLOAT_BIT)
 494 #define TARGET_FLOAT_BIT (sizeof (float) * TARGET_CHAR_BIT)
 495 #endif
 496
 497 /* Number of bits in a double for the target machine. */
 498 #if !defined (TARGET_DOUBLE_BIT)
 499 #define TARGET_DOUBLE_BIT (sizeof (double) * TARGET_CHAR_BIT)
 500 #endif
 501
 502 /* Number of bits in a long double for the target machine. */
 503 #if !defined (TARGET_LONG_DOUBLE_BIT)
 504 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 505 #endif
 506
 507 /* Number of bits in a "complex" for the target machine. */
 508 #if !defined (TARGET_COMPLEX_BIT)
 509 #define TARGET_COMPLEX_BIT (2 * TARGET_FLOAT_BIT)
 510 #endif
 511
 512 /* Number of bits in a "double complex" for the target machine. */
 513 #if !defined (TARGET_DOUBLE_COMPLEX_BIT)
 514 #define TARGET_DOUBLE_COMPLEX_BIT (2 * TARGET_DOUBLE_BIT)
 515 #endif
 516
 517 /* Number of bits in a pointer for the target machine */
 518 #if !defined (TARGET_PTR_BIT)
 519 #define TARGET_PTR_BIT TARGET_INT_BIT
 520 #endif
 521
 522 /* Default to support for "long long" if the host compiler being used is gcc.
 523    Config files must define CC_HAS_LONG_LONG to use other host compilers
 524    that are capable of supporting "long long", and to cause gdb to use that
 525    support.  Not defining CC_HAS_LONG_LONG will suppress use of "long long"
 526    regardless of what compiler is used.
 527
 528    FIXME: For now, automatic selection of "long long" as the default when
 529    gcc is used is disabled, pending further testing.  Concerns include the
 530    impact on gdb performance and the universality of bugfree long long
 531    support on platforms that do have gcc.  Compiling with FORCE_LONG_LONG
 532    will select "long long" use for testing purposes.  -fnf */
 533
 534 #ifndef CC_HAS_LONG_LONG
 535 #  if defined (__GNUC__) && defined (FORCE_LONG_LONG) /* See FIXME above */
 536 #    define CC_HAS_LONG_LONG 1
 537 #  endif
 538 #endif
 539
 540 /* LONGEST should not be a typedef, because "unsigned LONGEST" needs to work.
 541    CC_HAS_LONG_LONG is defined if the host compiler supports "long long"
 542    variables and we wish to make use of that support.  */
 543
 544 #ifndef LONGEST
 545 #  ifdef CC_HAS_LONG_LONG
 546 #    define LONGEST long long
 547 #  else
 548 #    define LONGEST long
 549 #  endif
 550 #endif
 551
 552 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 553    arguments to a function, number in a value history, register number, etc.)
 554    where the value must not be larger than can fit in an int.  */
 555
 556 #ifndef longest_to_int
 557 #  ifdef CC_HAS_LONG_LONG
 558 #    define longest_to_int(x) (((x) > INT_MAX || (x) < INT_MIN) \
 559                                ? (error ("Value out of range."),0) : (int) (x))
 560 #  else
 561      /* Assume sizeof (int) == sizeof (long).  */
 562 #    define longest_to_int(x) ((int) (x))
 563 #  endif
 564 #endif
 565
 566 /* If we picked up a copy of CHAR_BIT from a configuration file
 567    (which may get it by including <limits.h>) then use it to set
 568    the number of bits in a host char.  If not, use the same size
 569    as the target. */
 570
 571 #if defined (CHAR_BIT)
 572 #define HOST_CHAR_BIT CHAR_BIT
 573 #else
 574 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 575 #endif
 576
 577 /* Assorted functions we can declare, now that const and volatile are
 578    defined.  */
 579
 580 extern char *
 581 savestring PARAMS ((const char *, int));
 582
 583 extern char *
 584 msavestring PARAMS ((void *, const char *, int));
 585
 586 extern char *
 587 strsave PARAMS ((const char *));
 588
 589 extern char *
 590 mstrsave PARAMS ((void *, const char *));
 591
 592 extern char *
 593 concat PARAMS ((char *, ...));
 594
 595 extern PTR
 596 xmalloc PARAMS ((long));
 597
 598 extern PTR
 599 xrealloc PARAMS ((PTR, long));
 600
 601 extern PTR
 602 xmmalloc PARAMS ((PTR, long));
 603
 604 extern PTR
 605 xmrealloc PARAMS ((PTR, PTR, long));
 606
 607 extern PTR
 608 mmalloc PARAMS ((PTR, long));
 609
 610 extern PTR
 611 mrealloc PARAMS ((PTR, PTR, long));
 612
 613 extern void
 614 mfree PARAMS ((PTR, PTR));
 615
 616 extern int
 617 mmcheck PARAMS ((PTR, void (*) (void)));
 618
 619 extern int
 620 mmtrace PARAMS ((void));
 621
 622 extern int
 623 parse_escape PARAMS ((char **));
 624
 625 extern const char * const reg_names[];
 626
 627 extern NORETURN void                    /* Does not return to the caller.  */
 628 error ();
 629
 630 extern NORETURN void                    /* Does not return to the caller.  */
 631 fatal ();
 632
 633 extern NORETURN void                    /* Not specified as volatile in ... */
 634 exit PARAMS ((int));                    /* 4.10.4.3 */
 635
 636 extern NORETURN void                    /* Does not return to the caller.  */
 637 nomem PARAMS ((long));
 638
 639 /* Reasons for calling return_to_top_level.  */
 640 enum return_reason {
 641   /* User interrupt.  */
 642   RETURN_QUIT,
 643
 644   /* Any other error.  */
 645   RETURN_ERROR
 646 };
 647
 648 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 649 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 650 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 651 typedef int return_mask;
 652
 653 extern NORETURN void                    /* Does not return to the caller.  */
 654 return_to_top_level PARAMS ((enum return_reason));
 655
 656 extern int catch_errors PARAMS ((int (*) (char *), void *, char *,
 657                                  return_mask));
 658
 659 extern void
 660 warning_setup PARAMS ((void));
 661
 662 extern void
 663 warning ();
 664
 665 /* Global functions from other, non-gdb GNU thingies (libiberty for
 666    instance) */
 667
 668 extern char *
 669 basename PARAMS ((char *));
 670
 671 extern char *
 672 getenv PARAMS ((const char *));
 673
 674 extern char **
 675 buildargv PARAMS ((char *));
 676
 677 extern void
 678 freeargv PARAMS ((char **));
 679
 680 extern char *
 681 strerrno PARAMS ((int));
 682
 683 extern char *
 684 strsigno PARAMS ((int));
 685
 686 extern int
 687 errno_max PARAMS ((void));
 688
 689 extern int
 690 signo_max PARAMS ((void));
 691
 692 extern int
 693 strtoerrno PARAMS ((char *));
 694
 695 extern int
 696 strtosigno PARAMS ((char *));
 697
 698 extern char *
 699 strsignal PARAMS ((int));
 700
 701 /* From other system libraries */
 702
 703 #ifndef PSIGNAL_IN_SIGNAL_H
 704 extern void
 705 psignal PARAMS ((unsigned, const char *));
 706 #endif
 707
 708 /* For now, we can't include <stdlib.h> because it conflicts with
 709    "../include/getopt.h".  (FIXME)
 710
 711    However, if a function is defined in the ANSI C standard and a prototype
 712    for that function is defined and visible in any header file in an ANSI
 713    conforming environment, then that prototype must match the definition in
 714    the ANSI standard.  So we can just duplicate them here without conflict,
 715    since they must be the same in all conforming ANSI environments.  If
 716    these cause problems, then the environment is not ANSI conformant. */
 717
 718 #ifdef __STDC__
 719 #include <stddef.h>
 720 #endif
 721
 722 extern int
 723 fclose PARAMS ((FILE *stream));                         /* 4.9.5.1 */
 724
 725 extern void
 726 perror PARAMS ((const char *));                         /* 4.9.10.4 */
 727
 728 extern double
 729 atof PARAMS ((const char *nptr));                       /* 4.10.1.1 */
 730
 731 extern int
 732 atoi PARAMS ((const char *));                           /* 4.10.1.2 */
 733
 734 #ifndef MALLOC_INCOMPATIBLE
 735
 736 extern PTR
 737 malloc PARAMS ((size_t size));                          /* 4.10.3.3 */
 738
 739 extern PTR
 740 realloc PARAMS ((void *ptr, size_t size));              /* 4.10.3.4 */
 741
 742 extern void
 743 free PARAMS ((void *));                                 /* 4.10.3.2 */
 744
 745 #endif  /* MALLOC_INCOMPATIBLE */
 746
 747 extern void
 748 qsort PARAMS ((void *base, size_t nmemb,                /* 4.10.5.2 */
 749                size_t size,
 750                int (*comp)(const void *, const void *)));
 751
 752 #ifndef MEM_FNS_DECLARED        /* Some non-ANSI use void *, not char *.  */
 753 extern PTR
 754 memcpy PARAMS ((void *, const void *, size_t));         /* 4.11.2.1 */
 755
 756 extern int
 757 memcmp PARAMS ((const void *, const void *, size_t));   /* 4.11.4.1 */
 758 #endif
 759
 760 extern char *
 761 strchr PARAMS ((const char *, int));                    /* 4.11.5.2 */
 762
 763 extern char *
 764 strrchr PARAMS ((const char *, int));                   /* 4.11.5.5 */
 765
 766 extern char *
 767 strstr PARAMS ((const char *, const char *));           /* 4.11.5.7 */
 768
 769 extern char *
 770 strtok PARAMS ((char *, const char *));                 /* 4.11.5.8 */
 771
 772 #ifndef MEM_FNS_DECLARED        /* Some non-ANSI use void *, not char *.  */
 773 extern PTR
 774 memset PARAMS ((void *, int, size_t));                  /* 4.11.6.1 */
 775 #endif
 776
 777 extern char *
 778 strerror PARAMS ((int));                                /* 4.11.6.2 */
 779
 780 /* Various possibilities for alloca.  */
 781 #ifndef alloca
 782 # ifdef __GNUC__
 783 #  define alloca __builtin_alloca
 784 # else
 785 #  ifdef sparc
 786 #   include <alloca.h>          /* NOTE:  Doesn't declare alloca() */
 787 #  endif
 788 #  ifdef __STDC__
 789    extern void *alloca (size_t);
 790 #  else /* __STDC__ */
 791    extern char *alloca ();
 792 #  endif
 793 # endif
 794 #endif
 795
 796 /* TARGET_BYTE_ORDER and HOST_BYTE_ORDER must be defined to one of these.  */
 797
 798 #if !defined (BIG_ENDIAN)
 799 #define BIG_ENDIAN 4321
 800 #endif
 801
 802 #if !defined (LITTLE_ENDIAN)
 803 #define LITTLE_ENDIAN 1234
 804 #endif
 805
 806 /* Target-system-dependent parameters for GDB. */
 807
 808 /* Target machine definition.  This will be a symlink to one of the
 809    tm-*.h files, built by the `configure' script.  */
 810
 811 #include "tm.h"
 812
 813 /* The bit byte-order has to do just with numbering of bits in
 814    debugging symbols and such.  Conceptually, it's quite separate
 815    from byte/word byte order.  */
 816
 817 #if !defined (BITS_BIG_ENDIAN)
 818 #if TARGET_BYTE_ORDER == BIG_ENDIAN
 819 #define BITS_BIG_ENDIAN 1
 820 #endif /* Big endian.  */
 821
 822 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
 823 #define BITS_BIG_ENDIAN 0
 824 #endif /* Little endian.  */
 825 #endif /* BITS_BIG_ENDIAN not defined.  */
 826
 827 /* Swap LEN bytes at BUFFER between target and host byte-order.  This is
 828    the wrong way to do byte-swapping because it assumes that you have a way
 829    to have a host variable of exactly the right size.
 830    extract_* are the right way.  */
 831 #if TARGET_BYTE_ORDER == HOST_BYTE_ORDER
 832 #define SWAP_TARGET_AND_HOST(buffer,len)
 833 #else /* Target and host byte order differ.  */
 834 #define SWAP_TARGET_AND_HOST(buffer,len) \
 835   {                                                                      \
 836     char tmp;                                                            \
 837     char *p = (char *)(buffer);                                          \
 838     char *q = ((char *)(buffer)) + len - 1;                              \
 839     for (; p < q; p++, q--)                                              \
 840       {                                                                  \
 841         tmp = *q;                                                        \
 842         *q = *p;                                                         \
 843         *p = tmp;                                                        \
 844       }                                                                  \
 845   }
 846 #endif /* Target and host byte order differ.  */
 847
 848 /* In findvar.c.  */
 849 LONGEST extract_signed_integer PARAMS ((void *, int));
 850 unsigned LONGEST extract_unsigned_integer PARAMS ((void *, int));
 851 CORE_ADDR extract_address PARAMS ((void *, int));
 852
 853 void store_signed_integer PARAMS ((void *, int, LONGEST));
 854 void store_unsigned_integer PARAMS ((void *, int, unsigned LONGEST));
 855 void store_address PARAMS ((void *, int, CORE_ADDR));
 856 \f
 857 /* On some machines there are bits in addresses which are not really
 858    part of the address, but are used by the kernel, the hardware, etc.
 859    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
 860    so we get a "real" address such as one would find in a symbol
 861    table.  ADDR_BITS_SET sets those bits the way the system wants
 862    them.  This is used only for addresses of instructions, and even then
 863    I'm not sure it's used in all contexts.  It exists to deal with there
 864    being a few stray bits in the PC which would mislead us, not as some sort
 865    of generic thing to handle alignment or segmentation.  */
 866 #if !defined (ADDR_BITS_REMOVE)
 867 #define ADDR_BITS_REMOVE(addr) (addr)
 868 #define ADDR_BITS_SET(addr) (addr)
 869 #endif /* No ADDR_BITS_REMOVE.  */
 870
 871 /* From valops.c */
 872
 873 extern CORE_ADDR
 874 push_bytes PARAMS ((CORE_ADDR, char *, int));
 875
 876 /* In some modules, we don't have a definition of REGISTER_TYPE yet, so we
 877    must avoid prototyping this function for now.  FIXME.  Should be:
 878 extern CORE_ADDR
 879 push_word PARAMS ((CORE_ADDR, REGISTER_TYPE));
 880  */
 881 extern CORE_ADDR
 882 push_word ();
 883
 884 /* Some parts of gdb might be considered optional, in the sense that they
 885    are not essential for being able to build a working, usable debugger
 886    for a specific environment.  For example, the maintenance commands
 887    are there for the benefit of gdb maintainers.  As another example,
 888    some environments really don't need gdb's that are able to read N
 889    different object file formats.  In order to make it possible (but
 890    not necessarily recommended) to build "stripped down" versions of
 891    gdb, the following defines control selective compilation of those
 892    parts of gdb which can be safely left out when necessary.  Note that
 893    the default is to include everything. */
 894
 895 #ifndef MAINTENANCE_CMDS
 896 #define MAINTENANCE_CMDS 1
 897 #endif
 898
 899 #endif /* !defined (DEFS_H) */