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) (void *), void *));
 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 or libc.  BSD 4.4 declares this with the argument type as
 269    "const char *" in unistd.h, so we can't declare the argument
 270    as "char *".  */
 271
 272 extern char *
 273 re_comp PARAMS ((const char *));
 274
 275 /* From symfile.c */
 276
 277 extern void
 278 symbol_file_command PARAMS ((char *, int));
 279
 280 /* From main.c */
 281
 282 extern char *
 283 skip_quoted PARAMS ((char *));
 284
 285 extern char *
 286 gdb_readline PARAMS ((char *));
 287
 288 extern char *
 289 command_line_input PARAMS ((char *, int));
 290
 291 extern void
 292 print_prompt PARAMS ((void));
 293
 294 extern int
 295 batch_mode PARAMS ((void));
 296
 297 extern int
 298 input_from_terminal_p PARAMS ((void));
 299
 300 /* From printcmd.c */
 301
 302 extern void
 303 set_next_address PARAMS ((CORE_ADDR));
 304
 305 extern void
 306 print_address_symbolic PARAMS ((CORE_ADDR, FILE *, int, char *));
 307
 308 extern void
 309 print_address PARAMS ((CORE_ADDR, FILE *));
 310
 311 /* From source.c */
 312
 313 extern int
 314 openp PARAMS ((char *, int, char *, int, int, char **));
 315
 316 extern void
 317 mod_path PARAMS ((char *, char **));
 318
 319 extern void
 320 directory_command PARAMS ((char *, int));
 321
 322 extern void
 323 init_source_path PARAMS ((void));
 324
 325 /* From findvar.c */
 326
 327 extern int
 328 read_relative_register_raw_bytes PARAMS ((int, char *));
 329
 330 /* From readline (but not in any readline .h files).  */
 331
 332 extern char *
 333 tilde_expand PARAMS ((char *));
 334
 335 /* Structure for saved commands lines
 336    (for breakpoints, defined commands, etc).  */
 337
 338 struct command_line
 339 {
 340   struct command_line *next;
 341   char *line;
 342 };
 343
 344 extern struct command_line *
 345 read_command_lines PARAMS ((void));
 346
 347 extern void
 348 free_command_lines PARAMS ((struct command_line **));
 349
 350 /* String containing the current directory (what getwd would return).  */
 351
 352 extern char *current_directory;
 353
 354 /* Default radixes for input and output.  Only some values supported.  */
 355 extern unsigned input_radix;
 356 extern unsigned output_radix;
 357
 358 /* Possibilities for prettyprint parameters to routines which print
 359    things.  Like enum language, this should be in value.h, but needs
 360    to be here for the same reason.  FIXME:  If we can eliminate this
 361    as an arg to LA_VAL_PRINT, then we can probably move it back to
 362    value.h. */
 363
 364 enum val_prettyprint
 365 {
 366   Val_no_prettyprint = 0,
 367   Val_prettyprint,
 368   /* Use the default setting which the user has specified.  */
 369   Val_pretty_default
 370 };
 371
 372 \f
 373 /* Host machine definition.  This will be a symlink to one of the
 374    xm-*.h files, built by the `configure' script.  */
 375
 376 #include "xm.h"
 377
 378 /* Native machine support.  This will be a symlink to one of the
 379    nm-*.h files, built by the `configure' script.  */
 380
 381 #include "nm.h"
 382
 383 /* If the xm.h file did not define the mode string used to open the
 384    files, assume that binary files are opened the same way as text
 385    files */
 386 #ifndef FOPEN_RB
 387 #include "fopen-same.h"
 388 #endif
 389
 390 /*
 391  * Allow things in gdb to be declared "const".  If compiling ANSI, it
 392  * just works.  If compiling with gcc but non-ansi, redefine to __const__.
 393  * If non-ansi, non-gcc, then eliminate "const" entirely, making those
 394  * objects be read-write rather than read-only.
 395  */
 396
 397 #ifndef const
 398 #ifndef __STDC__
 399 # ifdef __GNUC__
 400 #  define const __const__
 401 # else
 402 #  define const /*nothing*/
 403 # endif /* GNUC */
 404 #endif /* STDC */
 405 #endif /* const */
 406
 407 #ifndef volatile
 408 #ifndef __STDC__
 409 # ifdef __GNUC__
 410 #  define volatile __volatile__
 411 # else
 412 #  define volatile /*nothing*/
 413 # endif /* GNUC */
 414 #endif /* STDC */
 415 #endif /* volatile */
 416
 417 #if 1
 418 #define NORETURN /*nothing*/
 419 #else /* not 1 */
 420 /* FIXME: This is bogus.  Having "volatile void" mean a function doesn't
 421    return is a gcc extension and should be based on #ifdef __GNUC__.
 422    Also, as of Sep 93 I'm told gcc is changing the syntax for ansi
 423    reasons (so declaring exit here as "volatile void" and as "void" in
 424    a system header loses).  Using the new "__attributes__ ((noreturn));"
 425    syntax would lose for old versions of gcc; using
 426      typedef void exit_fn_type PARAMS ((int));
 427      volatile exit_fn_type exit;
 428    would win.  */
 429 /* Some compilers (many AT&T SVR4 compilers for instance), do not accept
 430    declarations of functions that never return (exit for instance) as
 431    "volatile void".  For such compilers "NORETURN" can be defined away
 432    to keep them happy */
 433
 434 #ifndef NORETURN
 435 # ifdef __lucid
 436 #   define NORETURN /*nothing*/
 437 # else
 438 #   define NORETURN volatile
 439 # endif
 440 #endif
 441 #endif /* not 1 */
 442
 443 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).  */
 444
 445 #if !defined (UINT_MAX)
 446 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 447 #endif
 448
 449 #if !defined (INT_MAX)
 450 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 451 #endif
 452
 453 #if !defined (INT_MIN)
 454 #define INT_MIN (-INT_MAX - 1)                  /* 0x80000000 for 32-bits */
 455 #endif
 456
 457 #if !defined (ULONG_MAX)
 458 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 459 #endif
 460
 461 #if !defined (LONG_MAX)
 462 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 463 #endif
 464
 465 /* Number of bits in a char or unsigned char for the target machine.
 466    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 467 #if !defined (TARGET_CHAR_BIT)
 468 #define TARGET_CHAR_BIT 8
 469 #endif
 470
 471 /* Number of bits in a short or unsigned short for the target machine. */
 472 #if !defined (TARGET_SHORT_BIT)
 473 #define TARGET_SHORT_BIT (sizeof (short) * TARGET_CHAR_BIT)
 474 #endif
 475
 476 /* Number of bits in an int or unsigned int for the target machine. */
 477 #if !defined (TARGET_INT_BIT)
 478 #define TARGET_INT_BIT (sizeof (int) * TARGET_CHAR_BIT)
 479 #endif
 480
 481 /* Number of bits in a long or unsigned long for the target machine. */
 482 #if !defined (TARGET_LONG_BIT)
 483 #define TARGET_LONG_BIT (sizeof (long) * TARGET_CHAR_BIT)
 484 #endif
 485
 486 /* Number of bits in a long long or unsigned long long for the target machine. */
 487 #if !defined (TARGET_LONG_LONG_BIT)
 488 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 489 #endif
 490
 491 /* Number of bits in a float for the target machine. */
 492 #if !defined (TARGET_FLOAT_BIT)
 493 #define TARGET_FLOAT_BIT (sizeof (float) * TARGET_CHAR_BIT)
 494 #endif
 495
 496 /* Number of bits in a double for the target machine. */
 497 #if !defined (TARGET_DOUBLE_BIT)
 498 #define TARGET_DOUBLE_BIT (sizeof (double) * TARGET_CHAR_BIT)
 499 #endif
 500
 501 /* Number of bits in a long double for the target machine. */
 502 #if !defined (TARGET_LONG_DOUBLE_BIT)
 503 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 504 #endif
 505
 506 /* Number of bits in a "complex" for the target machine. */
 507 #if !defined (TARGET_COMPLEX_BIT)
 508 #define TARGET_COMPLEX_BIT (2 * TARGET_FLOAT_BIT)
 509 #endif
 510
 511 /* Number of bits in a "double complex" for the target machine. */
 512 #if !defined (TARGET_DOUBLE_COMPLEX_BIT)
 513 #define TARGET_DOUBLE_COMPLEX_BIT (2 * TARGET_DOUBLE_BIT)
 514 #endif
 515
 516 /* Number of bits in a pointer for the target machine */
 517 #if !defined (TARGET_PTR_BIT)
 518 #define TARGET_PTR_BIT TARGET_INT_BIT
 519 #endif
 520
 521 /* Default to support for "long long" if the host compiler being used is gcc.
 522    Config files must define CC_HAS_LONG_LONG to use other host compilers
 523    that are capable of supporting "long long", and to cause gdb to use that
 524    support.  Not defining CC_HAS_LONG_LONG will suppress use of "long long"
 525    regardless of what compiler is used.
 526
 527    FIXME: For now, automatic selection of "long long" as the default when
 528    gcc is used is disabled, pending further testing.  Concerns include the
 529    impact on gdb performance and the universality of bugfree long long
 530    support on platforms that do have gcc.  Compiling with FORCE_LONG_LONG
 531    will select "long long" use for testing purposes.  -fnf */
 532
 533 #ifndef CC_HAS_LONG_LONG
 534 #  if defined (__GNUC__) && defined (FORCE_LONG_LONG) /* See FIXME above */
 535 #    define CC_HAS_LONG_LONG 1
 536 #  endif
 537 #endif
 538
 539 /* LONGEST should not be a typedef, because "unsigned LONGEST" needs to work.
 540    CC_HAS_LONG_LONG is defined if the host compiler supports "long long"
 541    variables and we wish to make use of that support.  */
 542
 543 #ifndef LONGEST
 544 #  ifdef CC_HAS_LONG_LONG
 545 #    define LONGEST long long
 546 #  else
 547 #    define LONGEST long
 548 #  endif
 549 #endif
 550
 551 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 552    arguments to a function, number in a value history, register number, etc.)
 553    where the value must not be larger than can fit in an int.  */
 554
 555 #ifndef longest_to_int
 556 #  ifdef CC_HAS_LONG_LONG
 557 #    define longest_to_int(x) (((x) > INT_MAX || (x) < INT_MIN) \
 558                                ? (error ("Value out of range."),0) : (int) (x))
 559 #  else
 560      /* Assume sizeof (int) == sizeof (long).  */
 561 #    define longest_to_int(x) ((int) (x))
 562 #  endif
 563 #endif
 564
 565 /* If we picked up a copy of CHAR_BIT from a configuration file
 566    (which may get it by including <limits.h>) then use it to set
 567    the number of bits in a host char.  If not, use the same size
 568    as the target. */
 569
 570 #if defined (CHAR_BIT)
 571 #define HOST_CHAR_BIT CHAR_BIT
 572 #else
 573 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 574 #endif
 575
 576 /* Assorted functions we can declare, now that const and volatile are
 577    defined.  */
 578
 579 extern char *
 580 savestring PARAMS ((const char *, int));
 581
 582 extern char *
 583 msavestring PARAMS ((void *, const char *, int));
 584
 585 extern char *
 586 strsave PARAMS ((const char *));
 587
 588 extern char *
 589 mstrsave PARAMS ((void *, const char *));
 590
 591 extern char *
 592 concat PARAMS ((char *, ...));
 593
 594 extern PTR
 595 xmalloc PARAMS ((long));
 596
 597 extern PTR
 598 xrealloc PARAMS ((PTR, long));
 599
 600 extern PTR
 601 xmmalloc PARAMS ((PTR, long));
 602
 603 extern PTR
 604 xmrealloc PARAMS ((PTR, PTR, long));
 605
 606 extern PTR
 607 mmalloc PARAMS ((PTR, long));
 608
 609 extern PTR
 610 mrealloc PARAMS ((PTR, PTR, long));
 611
 612 extern void
 613 mfree PARAMS ((PTR, PTR));
 614
 615 extern int
 616 mmcheck PARAMS ((PTR, void (*) (void)));
 617
 618 extern int
 619 mmtrace PARAMS ((void));
 620
 621 extern int
 622 parse_escape PARAMS ((char **));
 623
 624 extern const char * const reg_names[];
 625
 626 extern NORETURN void                    /* Does not return to the caller.  */
 627 error ();
 628
 629 extern NORETURN void                    /* Does not return to the caller.  */
 630 fatal ();
 631
 632 extern NORETURN void                    /* Not specified as volatile in ... */
 633 exit PARAMS ((int));                    /* 4.10.4.3 */
 634
 635 extern NORETURN void                    /* Does not return to the caller.  */
 636 nomem PARAMS ((long));
 637
 638 /* Reasons for calling return_to_top_level.  */
 639 enum return_reason {
 640   /* User interrupt.  */
 641   RETURN_QUIT,
 642
 643   /* Any other error.  */
 644   RETURN_ERROR
 645 };
 646
 647 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 648 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 649 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 650 typedef int return_mask;
 651
 652 extern NORETURN void                    /* Does not return to the caller.  */
 653 return_to_top_level PARAMS ((enum return_reason));
 654
 655 extern int catch_errors PARAMS ((int (*) (char *), void *, char *,
 656                                  return_mask));
 657
 658 extern void
 659 warning_setup PARAMS ((void));
 660
 661 extern void
 662 warning ();
 663
 664 /* Global functions from other, non-gdb GNU thingies (libiberty for
 665    instance) */
 666
 667 extern char *
 668 basename PARAMS ((char *));
 669
 670 extern char *
 671 getenv PARAMS ((const char *));
 672
 673 extern char **
 674 buildargv PARAMS ((char *));
 675
 676 extern void
 677 freeargv PARAMS ((char **));
 678
 679 extern char *
 680 strerrno PARAMS ((int));
 681
 682 extern char *
 683 strsigno PARAMS ((int));
 684
 685 extern int
 686 errno_max PARAMS ((void));
 687
 688 extern int
 689 signo_max PARAMS ((void));
 690
 691 extern int
 692 strtoerrno PARAMS ((char *));
 693
 694 extern int
 695 strtosigno PARAMS ((char *));
 696
 697 extern char *
 698 strsignal PARAMS ((int));
 699
 700 /* From other system libraries */
 701
 702 #ifndef PSIGNAL_IN_SIGNAL_H
 703 extern void
 704 psignal PARAMS ((unsigned, const char *));
 705 #endif
 706
 707 /* For now, we can't include <stdlib.h> because it conflicts with
 708    "../include/getopt.h".  (FIXME)
 709
 710    However, if a function is defined in the ANSI C standard and a prototype
 711    for that function is defined and visible in any header file in an ANSI
 712    conforming environment, then that prototype must match the definition in
 713    the ANSI standard.  So we can just duplicate them here without conflict,
 714    since they must be the same in all conforming ANSI environments.  If
 715    these cause problems, then the environment is not ANSI conformant. */
 716
 717 #ifdef __STDC__
 718 #include <stddef.h>
 719 #endif
 720
 721 extern int
 722 fclose PARAMS ((FILE *stream));                         /* 4.9.5.1 */
 723
 724 extern void
 725 perror PARAMS ((const char *));                         /* 4.9.10.4 */
 726
 727 extern double
 728 atof PARAMS ((const char *nptr));                       /* 4.10.1.1 */
 729
 730 extern int
 731 atoi PARAMS ((const char *));                           /* 4.10.1.2 */
 732
 733 #ifndef MALLOC_INCOMPATIBLE
 734
 735 extern PTR
 736 malloc PARAMS ((size_t size));                          /* 4.10.3.3 */
 737
 738 extern PTR
 739 realloc PARAMS ((void *ptr, size_t size));              /* 4.10.3.4 */
 740
 741 extern void
 742 free PARAMS ((void *));                                 /* 4.10.3.2 */
 743
 744 #endif  /* MALLOC_INCOMPATIBLE */
 745
 746 extern void
 747 qsort PARAMS ((void *base, size_t nmemb,                /* 4.10.5.2 */
 748                size_t size,
 749                int (*comp)(const void *, const void *)));
 750
 751 #ifndef MEM_FNS_DECLARED        /* Some non-ANSI use void *, not char *.  */
 752 extern PTR
 753 memcpy PARAMS ((void *, const void *, size_t));         /* 4.11.2.1 */
 754
 755 extern int
 756 memcmp PARAMS ((const void *, const void *, size_t));   /* 4.11.4.1 */
 757 #endif
 758
 759 extern char *
 760 strchr PARAMS ((const char *, int));                    /* 4.11.5.2 */
 761
 762 extern char *
 763 strrchr PARAMS ((const char *, int));                   /* 4.11.5.5 */
 764
 765 extern char *
 766 strstr PARAMS ((const char *, const char *));           /* 4.11.5.7 */
 767
 768 extern char *
 769 strtok PARAMS ((char *, const char *));                 /* 4.11.5.8 */
 770
 771 #ifndef MEM_FNS_DECLARED        /* Some non-ANSI use void *, not char *.  */
 772 extern PTR
 773 memset PARAMS ((void *, int, size_t));                  /* 4.11.6.1 */
 774 #endif
 775
 776 extern char *
 777 strerror PARAMS ((int));                                /* 4.11.6.2 */
 778
 779 /* Various possibilities for alloca.  */
 780 #ifndef alloca
 781 # ifdef __GNUC__
 782 #  define alloca __builtin_alloca
 783 # else
 784 #  ifdef sparc
 785 #   include <alloca.h>          /* NOTE:  Doesn't declare alloca() */
 786 #  endif
 787 #  ifdef __STDC__
 788    extern void *alloca (size_t);
 789 #  else /* __STDC__ */
 790    extern char *alloca ();
 791 #  endif
 792 # endif
 793 #endif
 794
 795 /* TARGET_BYTE_ORDER and HOST_BYTE_ORDER must be defined to one of these.  */
 796
 797 #if !defined (BIG_ENDIAN)
 798 #define BIG_ENDIAN 4321
 799 #endif
 800
 801 #if !defined (LITTLE_ENDIAN)
 802 #define LITTLE_ENDIAN 1234
 803 #endif
 804
 805 /* Target-system-dependent parameters for GDB. */
 806
 807 /* Target machine definition.  This will be a symlink to one of the
 808    tm-*.h files, built by the `configure' script.  */
 809
 810 #include "tm.h"
 811
 812 /* The bit byte-order has to do just with numbering of bits in
 813    debugging symbols and such.  Conceptually, it's quite separate
 814    from byte/word byte order.  */
 815
 816 #if !defined (BITS_BIG_ENDIAN)
 817 #if TARGET_BYTE_ORDER == BIG_ENDIAN
 818 #define BITS_BIG_ENDIAN 1
 819 #endif /* Big endian.  */
 820
 821 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
 822 #define BITS_BIG_ENDIAN 0
 823 #endif /* Little endian.  */
 824 #endif /* BITS_BIG_ENDIAN not defined.  */
 825
 826 /* Swap LEN bytes at BUFFER between target and host byte-order.  This is
 827    the wrong way to do byte-swapping because it assumes that you have a way
 828    to have a host variable of exactly the right size.
 829    extract_* are the right way.  */
 830 #if TARGET_BYTE_ORDER == HOST_BYTE_ORDER
 831 #define SWAP_TARGET_AND_HOST(buffer,len)
 832 #else /* Target and host byte order differ.  */
 833 #define SWAP_TARGET_AND_HOST(buffer,len) \
 834   {                                                                      \
 835     char tmp;                                                            \
 836     char *p = (char *)(buffer);                                          \
 837     char *q = ((char *)(buffer)) + len - 1;                              \
 838     for (; p < q; p++, q--)                                              \
 839       {                                                                  \
 840         tmp = *q;                                                        \
 841         *q = *p;                                                         \
 842         *p = tmp;                                                        \
 843       }                                                                  \
 844   }
 845 #endif /* Target and host byte order differ.  */
 846
 847 /* In findvar.c.  */
 848 LONGEST extract_signed_integer PARAMS ((void *, int));
 849 unsigned LONGEST extract_unsigned_integer PARAMS ((void *, int));
 850 CORE_ADDR extract_address PARAMS ((void *, int));
 851
 852 void store_signed_integer PARAMS ((void *, int, LONGEST));
 853 void store_unsigned_integer PARAMS ((void *, int, unsigned LONGEST));
 854 void store_address PARAMS ((void *, int, CORE_ADDR));
 855 \f
 856 /* On some machines there are bits in addresses which are not really
 857    part of the address, but are used by the kernel, the hardware, etc.
 858    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
 859    so we get a "real" address such as one would find in a symbol
 860    table.  ADDR_BITS_SET sets those bits the way the system wants
 861    them.  This is used only for addresses of instructions, and even then
 862    I'm not sure it's used in all contexts.  It exists to deal with there
 863    being a few stray bits in the PC which would mislead us, not as some sort
 864    of generic thing to handle alignment or segmentation.  */
 865 #if !defined (ADDR_BITS_REMOVE)
 866 #define ADDR_BITS_REMOVE(addr) (addr)
 867 #define ADDR_BITS_SET(addr) (addr)
 868 #endif /* No ADDR_BITS_REMOVE.  */
 869
 870 /* From valops.c */
 871
 872 extern CORE_ADDR
 873 push_bytes PARAMS ((CORE_ADDR, char *, int));
 874
 875 /* In some modules, we don't have a definition of REGISTER_TYPE yet, so we
 876    must avoid prototyping this function for now.  FIXME.  Should be:
 877 extern CORE_ADDR
 878 push_word PARAMS ((CORE_ADDR, REGISTER_TYPE));
 879  */
 880 extern CORE_ADDR
 881 push_word ();
 882
 883 /* Some parts of gdb might be considered optional, in the sense that they
 884    are not essential for being able to build a working, usable debugger
 885    for a specific environment.  For example, the maintenance commands
 886    are there for the benefit of gdb maintainers.  As another example,
 887    some environments really don't need gdb's that are able to read N
 888    different object file formats.  In order to make it possible (but
 889    not necessarily recommended) to build "stripped down" versions of
 890    gdb, the following defines control selective compilation of those
 891    parts of gdb which can be safely left out when necessary.  Note that
 892    the default is to include everything. */
 893
 894 #ifndef MAINTENANCE_CMDS
 895 #define MAINTENANCE_CMDS 1
 896 #endif
 897
 898 #endif /* !defined (DEFS_H) */