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    in all subsequent file inclusions.  FIXME:  This inclusion can now
  27    be removed from all files that include defs.h */
  28
  29 #include "ansidecl.h"
  30
  31 /* We could use the EXFUN macro in ansidecl.h to handle prototypes, but
  32    the name is misleading the the result is ugly.  So just define a simple
  33    macro to handle the parameter lists. */
  34
  35 #ifdef __STDC__
  36 #define PARAMS(paramlist) paramlist
  37 #else
  38 #define PARAMS(paramlist) ()
  39 #endif
  40
  41 /* An address in the program being debugged.  Host byte order.  */
  42 typedef unsigned int CORE_ADDR;
  43
  44 #define min(a, b) ((a) < (b) ? (a) : (b))
  45 #define max(a, b) ((a) > (b) ? (a) : (b))
  46
  47 /* The character 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
  56 extern void
  57 quit PARAMS ((void));
  58
  59 #define QUIT { if (quit_flag) quit (); }
  60
  61 /* Notes on classes: class_alias is for alias commands which are not
  62    abbreviations of the original command.  */
  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
  72 };
  73
  74 /* the cleanup list records things that have to be undone
  75    if an error happens (descriptors to be closed, memory to be freed, etc.)
  76    Each link in the chain records a function to call and an
  77    argument to give it.
  78
  79    Use make_cleanup to add an element to the cleanup chain.
  80    Use do_cleanups to do all cleanup actions back to a given
  81    point in the chain.  Use discard_cleanups to remove cleanups
  82    from the chain back to a given point, not doing them.  */
  83
  84 struct cleanup
  85 {
  86   struct cleanup *next;
  87   void (*function) PARAMS ((PTR));
  88   PTR arg;
  89 };
  90
  91 /* From blockframe.c */
  92
  93 extern int
  94 inside_entry_func PARAMS ((CORE_ADDR));
  95
  96 extern int
  97 inside_entry_file PARAMS ((CORE_ADDR addr));
  98
  99 extern int
 100 inside_main_func PARAMS ((CORE_ADDR pc));
 101
 102 /* From cplus-dem.c */
 103
 104 extern char *
 105 cplus_demangle PARAMS ((const char *, int));
 106
 107 extern char *
 108 cplus_mangle_opname PARAMS ((char *, int));
 109
 110 /* From libmmalloc.a (memory mapped malloc library) */
 111
 112 extern PTR
 113 mmalloc_attach PARAMS ((int, PTR));
 114
 115 extern PTR
 116 mmalloc_detach PARAMS ((PTR));
 117
 118 extern PTR
 119 mmalloc PARAMS ((PTR, long));
 120
 121 extern PTR
 122 mrealloc PARAMS ((PTR, PTR, long));
 123
 124 extern void
 125 mfree PARAMS ((PTR, PTR));
 126
 127 extern int
 128 mmalloc_setkey PARAMS ((PTR, int, PTR));
 129
 130 extern PTR
 131 mmalloc_getkey PARAMS ((PTR, int));
 132
 133 /* From utils.c */
 134
 135 extern char *
 136 safe_strerror PARAMS ((int));
 137
 138 extern char *
 139 safe_strsignal PARAMS ((int));
 140
 141 extern void
 142 init_malloc PARAMS ((PTR));
 143
 144 extern void
 145 request_quit PARAMS ((int));
 146
 147 extern void
 148 do_cleanups PARAMS ((struct cleanup *));
 149
 150 extern void
 151 discard_cleanups PARAMS ((struct cleanup *));
 152
 153 /* The bare make_cleanup function is one of those rare beasts that
 154    takes almost any type of function as the first arg and anything that
 155    will fit in a "void *" as the second arg.
 156
 157    Should be, once all calls and called-functions are cleaned up:
 158 extern struct cleanup *
 159 make_cleanup PARAMS ((void (*function) (PTR), PTR));
 160
 161    Until then, lint and/or various type-checking compiler options will
 162    complain about make_cleanup calls.  It'd be wrong to just cast things,
 163    since the type actually passed when the function is called would be
 164    wrong.  */
 165
 166 extern struct cleanup *
 167 make_cleanup ();
 168
 169 extern struct cleanup *
 170 save_cleanups PARAMS ((void));
 171
 172 extern void
 173 restore_cleanups PARAMS ((struct cleanup *));
 174
 175 extern void
 176 free_current_contents PARAMS ((char **));
 177
 178 extern void
 179 null_cleanup PARAMS ((char **));
 180
 181 extern int
 182 myread PARAMS ((int, char *, int));
 183
 184 extern int
 185 query ();
 186
 187 extern void
 188 wrap_here PARAMS ((char *));
 189
 190 extern void
 191 reinitialize_more_filter PARAMS ((void));
 192
 193 extern int
 194 print_insn PARAMS ((CORE_ADDR, FILE *));
 195
 196 extern void
 197 fputs_filtered PARAMS ((const char *, FILE *));
 198
 199 extern void
 200 puts_filtered PARAMS ((char *));
 201
 202 extern void
 203 fprintf_filtered ();
 204
 205 extern void
 206 printf_filtered ();
 207
 208 extern void
 209 print_spaces PARAMS ((int, FILE *));
 210
 211 extern void
 212 print_spaces_filtered PARAMS ((int, FILE *));
 213
 214 extern char *
 215 n_spaces PARAMS ((int));
 216
 217 extern void
 218 printchar PARAMS ((int, FILE *, int));
 219
 220 extern void
 221 fprint_symbol PARAMS ((FILE *, char *));
 222
 223 extern void
 224 fputs_demangled PARAMS ((char *, FILE *, int));
 225
 226 extern void
 227 perror_with_name PARAMS ((char *));
 228
 229 extern void
 230 print_sys_errmsg PARAMS ((char *, int));
 231
 232 /* From regex.c */
 233
 234 extern char *
 235 re_comp PARAMS ((char *));
 236
 237 /* From symfile.c */
 238
 239 extern void
 240 symbol_file_command PARAMS ((char *, int));
 241
 242 /* From main.c */
 243
 244 extern char *
 245 gdb_readline PARAMS ((char *));
 246
 247 extern char *
 248 command_line_input PARAMS ((char *, int));
 249
 250 extern void
 251 print_prompt PARAMS ((void));
 252
 253 extern int
 254 batch_mode PARAMS ((void));
 255
 256 extern int
 257 input_from_terminal_p PARAMS ((void));
 258
 259 extern int
 260 catch_errors PARAMS ((int (*) (char *), char *, char *));
 261
 262 /* From printcmd.c */
 263
 264 extern void
 265 set_next_address PARAMS ((CORE_ADDR));
 266
 267 extern void
 268 print_address_symbolic PARAMS ((CORE_ADDR, FILE *, int, char *));
 269
 270 extern void
 271 print_address PARAMS ((CORE_ADDR, FILE *));
 272
 273 /* From source.c */
 274
 275 extern int
 276 openp PARAMS ((char *, int, char *, int, int, char **));
 277
 278 extern void
 279 mod_path PARAMS ((char *, char **));
 280
 281 extern void
 282 directory_command PARAMS ((char *, int));
 283
 284 extern void
 285 init_source_path PARAMS ((void));
 286
 287 /* From findvar.c */
 288
 289 extern int
 290 read_relative_register_raw_bytes PARAMS ((int, char *));
 291
 292 /* From readline (but not in any readline .h files).  */
 293
 294 extern char *
 295 tilde_expand PARAMS ((char *));
 296
 297 /* Structure for saved commands lines
 298    (for breakpoints, defined commands, etc).  */
 299
 300 struct command_line
 301 {
 302   struct command_line *next;
 303   char *line;
 304 };
 305
 306 extern struct command_line *
 307 read_command_lines PARAMS ((void));
 308
 309 extern void
 310 free_command_lines PARAMS ((struct command_line **));
 311
 312 /* String containing the current directory (what getwd would return).  */
 313
 314 extern char *current_directory;
 315
 316 /* Default radixes for input and output.  Only some values supported.  */
 317 extern unsigned input_radix;
 318 extern unsigned output_radix;
 319
 320 /* Baud rate specified for communication with serial target systems.  */
 321 extern char *baud_rate;
 322
 323 /* Languages represented in the symbol table and elsewhere. */
 324
 325 enum language
 326 {
 327    language_unknown,            /* Language not known */
 328    language_auto,               /* Placeholder for automatic setting */
 329    language_c,                  /* C */
 330    language_cplus,              /* C++ */
 331    language_m2                  /* Modula-2 */
 332 };
 333
 334 /* Return a format string for printf that will print a number in the local
 335    (language-specific) hexadecimal format.  Result is static and is
 336    overwritten by the next call.  local_hex_format_custom takes printf
 337    options like "08" or "l" (to produce e.g. %08x or %lx).  */
 338
 339 #define local_hex_format() (current_language->la_hex_format)
 340
 341 extern char *
 342 local_hex_format_custom PARAMS ((char *));      /* language.c */
 343
 344 /* Return a string that contains a number formatted in the local
 345    (language-specific) hexadecimal format.  Result is static and is
 346    overwritten by the next call.  local_hex_string_custom takes printf
 347    options like "08" or "l".  */
 348
 349 extern char *
 350 local_hex_string PARAMS ((int));                /* language.c */
 351
 352 extern char *
 353 local_hex_string_custom PARAMS ((int, char *)); /* language.c */
 354
 355 \f
 356 /* Host machine definition.  This will be a symlink to one of the
 357    xm-*.h files, built by the `configure' script.  */
 358
 359 #include "xm.h"
 360
 361 /* If the xm.h file did not define the mode string used to open the
 362    files, assume that binary files are opened the same way as text
 363    files */
 364 #ifndef FOPEN_RB
 365 #include "fopen-same.h"
 366 #endif
 367
 368 /*
 369  * Allow things in gdb to be declared "const".  If compiling ANSI, it
 370  * just works.  If compiling with gcc but non-ansi, redefine to __const__.
 371  * If non-ansi, non-gcc, then eliminate "const" entirely, making those
 372  * objects be read-write rather than read-only.
 373  */
 374
 375 #ifndef const
 376 #ifndef __STDC__
 377 # ifdef __GNUC__
 378 #  define const __const__
 379 # else
 380 #  define const /*nothing*/
 381 # endif /* GNUC */
 382 #endif /* STDC */
 383 #endif /* const */
 384
 385 #ifndef volatile
 386 #ifndef __STDC__
 387 # ifdef __GNUC__
 388 #  define volatile __volatile__
 389 # else
 390 #  define volatile /*nothing*/
 391 # endif /* GNUC */
 392 #endif /* STDC */
 393 #endif /* volatile */
 394
 395 /* Some compilers (many AT&T SVR4 compilers for instance), do not accept
 396    declarations of functions that never return (exit for instance) as
 397    "volatile void".  For such compilers "NORETURN" can be defined away
 398    to keep them happy */
 399
 400 #ifndef NORETURN
 401 # define NORETURN volatile
 402 #endif
 403
 404 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).  */
 405
 406 #if !defined (UINT_MAX)
 407 #define UINT_MAX 0xffffffff
 408 #endif
 409
 410 #if !defined (LONG_MAX)
 411 #define LONG_MAX 0x7fffffff
 412 #endif
 413
 414 #if !defined (INT_MAX)
 415 #define INT_MAX 0x7fffffff
 416 #endif
 417
 418 #if !defined (INT_MIN)
 419 /* Two's complement, 32 bit.  */
 420 #define INT_MIN -0x80000000
 421 #endif
 422
 423 /* Number of bits in a char or unsigned char for the target machine.
 424    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 425 #if !defined (TARGET_CHAR_BIT)
 426 #define TARGET_CHAR_BIT 8
 427 #endif
 428
 429 /* Number of bits in a short or unsigned short for the target machine. */
 430 #if !defined (TARGET_SHORT_BIT)
 431 #define TARGET_SHORT_BIT (sizeof (short) * TARGET_CHAR_BIT)
 432 #endif
 433
 434 /* Number of bits in an int or unsigned int for the target machine. */
 435 #if !defined (TARGET_INT_BIT)
 436 #define TARGET_INT_BIT (sizeof (int) * TARGET_CHAR_BIT)
 437 #endif
 438
 439 /* Number of bits in a long or unsigned long for the target machine. */
 440 #if !defined (TARGET_LONG_BIT)
 441 #define TARGET_LONG_BIT (sizeof (long) * TARGET_CHAR_BIT)
 442 #endif
 443
 444 /* Number of bits in a long long or unsigned long long for the target machine. */
 445 #if !defined (TARGET_LONG_LONG_BIT)
 446 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 447 #endif
 448
 449 /* Number of bits in a float for the target machine. */
 450 #if !defined (TARGET_FLOAT_BIT)
 451 #define TARGET_FLOAT_BIT (sizeof (float) * TARGET_CHAR_BIT)
 452 #endif
 453
 454 /* Number of bits in a double for the target machine. */
 455 #if !defined (TARGET_DOUBLE_BIT)
 456 #define TARGET_DOUBLE_BIT (sizeof (double) * TARGET_CHAR_BIT)
 457 #endif
 458
 459 /* Number of bits in a long double for the target machine. */
 460 #if !defined (TARGET_LONG_DOUBLE_BIT)
 461 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 462 #endif
 463
 464 /* Number of bits in a "complex" for the target machine. */
 465 #if !defined (TARGET_COMPLEX_BIT)
 466 #define TARGET_COMPLEX_BIT (2 * TARGET_FLOAT_BIT)
 467 #endif
 468
 469 /* Number of bits in a "double complex" for the target machine. */
 470 #if !defined (TARGET_DOUBLE_COMPLEX_BIT)
 471 #define TARGET_DOUBLE_COMPLEX_BIT (2 * TARGET_DOUBLE_BIT)
 472 #endif
 473
 474 /* Number of bits in a pointer for the target machine */
 475 #if !defined (TARGET_PTR_BIT)
 476 #define TARGET_PTR_BIT TARGET_INT_BIT
 477 #endif
 478
 479 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number
 480    of arguments to a function, number in a value history, register
 481    number, etc.) where the value must not be larger than can fit
 482    in an int.  */
 483 #if !defined (longest_to_int)
 484 #if defined (LONG_LONG)
 485 #define longest_to_int(x) (((x) > INT_MAX || (x) < INT_MIN) \
 486                            ? error ("Value out of range.") : (int) (x))
 487 #else /* No LONG_LONG.  */
 488 /* Assume sizeof (int) == sizeof (long).  */
 489 #define longest_to_int(x) ((int) (x))
 490 #endif /* No LONG_LONG.  */
 491 #endif /* No longest_to_int.  */
 492
 493 /* This should not be a typedef, because "unsigned LONGEST" needs
 494    to work. LONG_LONG is defined if the host has "long long".  */
 495
 496 #ifndef LONGEST
 497 # ifdef LONG_LONG
 498 #  define LONGEST long long
 499 # else
 500 #  define LONGEST long
 501 # endif
 502 #endif
 503
 504 /* Assorted functions we can declare, now that const and volatile are
 505    defined.  */
 506
 507 extern char *
 508 savestring PARAMS ((const char *, int));
 509
 510 extern char *
 511 msavestring PARAMS ((void *, const char *, int));
 512
 513 extern char *
 514 strsave PARAMS ((const char *));
 515
 516 extern char *
 517 mstrsave PARAMS ((void *, const char *));
 518
 519 extern char *
 520 concat PARAMS ((char *, ...));
 521
 522 extern PTR
 523 xmalloc PARAMS ((long));
 524
 525 extern PTR
 526 xrealloc PARAMS ((PTR, long));
 527
 528 extern PTR
 529 xmmalloc PARAMS ((PTR, long));
 530
 531 extern PTR
 532 xmrealloc PARAMS ((PTR, PTR, long));
 533
 534 extern PTR
 535 mmalloc PARAMS ((PTR, long));
 536
 537 extern PTR
 538 mrealloc PARAMS ((PTR, PTR, long));
 539
 540 extern void
 541 mfree PARAMS ((PTR, PTR));
 542
 543 extern int
 544 mmcheck PARAMS ((PTR, void (*) (void)));
 545
 546 extern int
 547 mmtrace PARAMS ((void));
 548
 549 extern int
 550 parse_escape PARAMS ((char **));
 551
 552 extern char *reg_names[];
 553
 554 extern NORETURN void                    /* Does not return to the caller.  */
 555 error ();
 556
 557 extern NORETURN void                    /* Does not return to the caller.  */
 558 fatal ();
 559
 560 extern NORETURN void                    /* Not specified as volatile in ... */
 561 exit PARAMS ((int));                    /* 4.10.4.3 */
 562
 563 extern NORETURN void                    /* Does not return to the caller.  */
 564 nomem PARAMS ((long));
 565
 566 extern NORETURN void                    /* Does not return to the caller.  */
 567 return_to_top_level PARAMS ((void));
 568
 569 extern void
 570 warning_setup PARAMS ((void));
 571
 572 extern void
 573 warning ();
 574
 575 /* Global functions from other, non-gdb GNU thingies (libiberty for
 576    instance) */
 577
 578 extern char *
 579 basename PARAMS ((char *));
 580
 581 extern char *
 582 getenv PARAMS ((CONST char *));
 583
 584 extern char **
 585 buildargv PARAMS ((char *));
 586
 587 extern void
 588 freeargv PARAMS ((char **));
 589
 590 extern char *
 591 strerrno PARAMS ((int));
 592
 593 extern char *
 594 strsigno PARAMS ((int));
 595
 596 extern int
 597 errno_max PARAMS ((void));
 598
 599 extern int
 600 signo_max PARAMS ((void));
 601
 602 extern int
 603 strtoerrno PARAMS ((char *));
 604
 605 extern int
 606 strtosigno PARAMS ((char *));
 607
 608 extern char *
 609 strsignal PARAMS ((int));
 610
 611 /* From other system libraries */
 612
 613 #ifndef PSIGNAL_IN_SIGNAL_H
 614 extern void
 615 psignal PARAMS ((unsigned, char *));
 616 #endif
 617
 618 /* For now, we can't include <stdlib.h> because it conflicts with
 619    "../include/getopt.h".  (FIXME)
 620
 621    However, if a function is defined in the ANSI C standard and a prototype
 622    for that function is defined and visible in any header file in an ANSI
 623    conforming environment, then that prototype must match the definition in
 624    the ANSI standard.  So we can just duplicate them here without conflict,
 625    since they must be the same in all conforming ANSI environments.  If
 626    these cause problems, then the environment is not ANSI conformant. */
 627
 628 #ifdef __STDC__
 629 #include <stddef.h>
 630 #endif
 631
 632 extern int
 633 fclose PARAMS ((FILE *stream));                         /* 4.9.5.1 */
 634
 635 extern void
 636 perror PARAMS ((const char *));                         /* 4.9.10.4 */
 637
 638 extern double
 639 atof PARAMS ((const char *nptr));                       /* 4.10.1.1 */
 640
 641 #ifndef MALLOC_INCOMPATIBLE
 642
 643 extern PTR
 644 malloc PARAMS ((size_t size));                          /* 4.10.3.3 */
 645
 646 extern PTR
 647 realloc PARAMS ((void *ptr, size_t size));              /* 4.10.3.4 */
 648
 649 extern void
 650 free PARAMS ((void *));                                 /* 4.10.3.2 */
 651
 652 #endif  /* MALLOC_INCOMPATIBLE */
 653
 654 extern PTR
 655 qsort PARAMS ((void *base, size_t nmemb,                /* 4.10.5.2 */
 656                size_t size,
 657                int (*comp)(const void *, const void *)));
 658
 659 extern char *
 660 strchr PARAMS ((const char *, int));                    /* 4.11.5.2 */
 661
 662 extern char *
 663 strrchr PARAMS ((const char *, int));                   /* 4.11.5.5 */
 664
 665 extern char *
 666 strstr PARAMS ((const char *, const char *));           /* 4.11.5.7 */
 667
 668 extern char *
 669 strtok PARAMS ((char *, const char *));                 /* 4.11.5.8 */
 670
 671 extern char *
 672 strerror PARAMS ((int));                                /* 4.11.6.2 */
 673
 674 /* Various possibilities for alloca.  */
 675 #ifndef alloca
 676 # ifdef __GNUC__
 677 #  define alloca __builtin_alloca
 678 # else
 679 #  ifdef sparc
 680 #   include <alloca.h>
 681 #  endif
 682    extern char *alloca ();
 683 # endif
 684 #endif
 685
 686 /* TARGET_BYTE_ORDER and HOST_BYTE_ORDER should be defined to one of these.  */
 687
 688 #if !defined (BIG_ENDIAN)
 689 #define BIG_ENDIAN 4321
 690 #endif
 691
 692 #if !defined (LITTLE_ENDIAN)
 693 #define LITTLE_ENDIAN 1234
 694 #endif
 695
 696 /* Target-system-dependent parameters for GDB.
 697
 698    The standard thing is to include defs.h.  However, files that are
 699    specific to a particular target can define TM_FILE_OVERRIDE before
 700    including defs.h, then can include any particular tm-file they desire.  */
 701
 702 /* Target machine definition.  This will be a symlink to one of the
 703    tm-*.h files, built by the `configure' script.  */
 704
 705 #ifndef TM_FILE_OVERRIDE
 706 #include "tm.h"
 707 #endif
 708
 709 /* The bit byte-order has to do just with numbering of bits in
 710    debugging symbols and such.  Conceptually, it's quite separate
 711    from byte/word byte order.  */
 712
 713 #if !defined (BITS_BIG_ENDIAN)
 714 #if TARGET_BYTE_ORDER == BIG_ENDIAN
 715 #define BITS_BIG_ENDIAN 1
 716 #endif /* Big endian.  */
 717
 718 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
 719 #define BITS_BIG_ENDIAN 0
 720 #endif /* Little endian.  */
 721 #endif /* BITS_BIG_ENDIAN not defined.  */
 722
 723 /* Swap LEN bytes at BUFFER between target and host byte-order.  */
 724 #if TARGET_BYTE_ORDER == HOST_BYTE_ORDER
 725 #define SWAP_TARGET_AND_HOST(buffer,len)
 726 #else /* Target and host byte order differ.  */
 727 #define SWAP_TARGET_AND_HOST(buffer,len) \
 728   {                                                                      \
 729     char tmp;                                                            \
 730     char *p = (char *)(buffer);                                          \
 731     char *q = ((char *)(buffer)) + len - 1;                              \
 732     for (; p < q; p++, q--)                                              \
 733       {                                                                  \
 734         tmp = *q;                                                        \
 735         *q = *p;                                                         \
 736         *p = tmp;                                                        \
 737       }                                                                  \
 738   }
 739 #endif /* Target and host byte order differ.  */
 740
 741 /* On some machines there are bits in addresses which are not really
 742    part of the address, but are used by the kernel, the hardware, etc.
 743    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
 744    so we get a "real" address such as one would find in a symbol
 745    table.  ADDR_BITS_SET sets those bits the way the system wants
 746    them.  */
 747 #if !defined (ADDR_BITS_REMOVE)
 748 #define ADDR_BITS_REMOVE(addr) (addr)
 749 #define ADDR_BITS_SET(addr) (addr)
 750 #endif /* No ADDR_BITS_REMOVE.  */
 751
 752 /* From valops.c */
 753
 754 extern CORE_ADDR
 755 push_bytes PARAMS ((CORE_ADDR, char *, int));
 756
 757 /* In some modules, we don't have a definition of REGISTER_TYPE yet, so we
 758    must avoid prototyping this function for now.  FIXME.  Should be:
 759 extern CORE_ADDR
 760 push_word PARAMS ((CORE_ADDR, REGISTER_TYPE));
 761  */
 762 extern CORE_ADDR
 763 push_word ();
 764
 765 #endif /* !defined (DEFS_H) */