gdb/defs.h

   1 /* Basic, host-specific, and target-specific definitions for GDB.
   2    Copyright (C) 1986, 1989, 1991, 1992, 1993, 1994
   3    Free Software Foundation, Inc.
   4
   5 This file is part of GDB.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 #if !defined (DEFS_H)
  22 #define DEFS_H 1
  23
  24 #include <stdio.h>
  25
  26 /* First include ansidecl.h so we can use the various macro definitions
  27    here and in all subsequent file inclusions.  */
  28
  29 #include "ansidecl.h"
  30
  31 #include "libiberty.h"
  32
  33 /* libiberty.h can't declare this one, but evidently we can.  */
  34 extern char *strsignal PARAMS ((int));
  35
  36 /* For BFD64 and bfd_vma.  */
  37 #include "bfd.h"
  38
  39 /* An address in the program being debugged.  Host byte order.  Rather
  40    than duplicate all the logic in BFD which figures out what type
  41    this is (long, long long, etc.) and whether it needs to be 64
  42    bits (the host/target interactions are subtle), we just use
  43    bfd_vma.  */
  44
  45 typedef bfd_vma CORE_ADDR;
  46
  47 #define min(a, b) ((a) < (b) ? (a) : (b))
  48 #define max(a, b) ((a) > (b) ? (a) : (b))
  49
  50 /* Gdb does *lots* of string compares.  Use macros to speed them up by
  51    avoiding function calls if the first characters are not the same. */
  52
  53 #define STRCMP(a,b) (*(a) == *(b) ? strcmp ((a), (b)) : (int)*(a) - (int)*(b))
  54 #define STREQ(a,b) (*(a) == *(b) ? !strcmp ((a), (b)) : 0)
  55 #define STREQN(a,b,c) (*(a) == *(b) ? !strncmp ((a), (b), (c)) : 0)
  56
  57 /* The character GNU C++ uses to build identifiers that must be unique from
  58    the program's identifiers (such as $this and $$vptr).  */
  59 #define CPLUS_MARKER '$'        /* May be overridden to '.' for SysV */
  60
  61 #include <errno.h>              /* System call error return status */
  62
  63 extern int quit_flag;
  64 extern int immediate_quit;
  65 extern int sevenbit_strings;
  66
  67 extern void quit PARAMS ((void));
  68
  69 #define QUIT { if (quit_flag) quit (); }
  70
  71 /* Command classes are top-level categories into which commands are broken
  72    down for "help" purposes.
  73    Notes on classes: class_alias is for alias commands which are not
  74    abbreviations of the original command.  class-pseudo is for commands
  75    which are not really commands nor help topics ("stop").  */
  76
  77 enum command_class
  78 {
  79   /* Special args to help_list */
  80   all_classes = -2, all_commands = -1,
  81   /* Classes of commands */
  82   no_class = -1, class_run = 0, class_vars, class_stack,
  83   class_files, class_support, class_info, class_breakpoint,
  84   class_alias, class_obscure, class_user, class_maintenance,
  85   class_pseudo
  86 };
  87
  88 /* Languages represented in the symbol table and elsewhere.
  89    This should probably be in language.h, but since enum's can't
  90    be forward declared to satisfy opaque references before their
  91    actual definition, needs to be here. */
  92
  93 enum language
  94 {
  95    language_unknown,            /* Language not known */
  96    language_auto,               /* Placeholder for automatic setting */
  97    language_c,                  /* C */
  98    language_cplus,              /* C++ */
  99    language_chill,              /* Chill */
 100    language_m2,                 /* Modula-2 */
 101    language_asm                 /* Assembly language */
 102 };
 103
 104 /* the cleanup list records things that have to be undone
 105    if an error happens (descriptors to be closed, memory to be freed, etc.)
 106    Each link in the chain records a function to call and an
 107    argument to give it.
 108
 109    Use make_cleanup to add an element to the cleanup chain.
 110    Use do_cleanups to do all cleanup actions back to a given
 111    point in the chain.  Use discard_cleanups to remove cleanups
 112    from the chain back to a given point, not doing them.  */
 113
 114 struct cleanup
 115 {
 116   struct cleanup *next;
 117   void (*function) PARAMS ((PTR));
 118   PTR arg;
 119 };
 120
 121 /* From blockframe.c */
 122
 123 extern int inside_entry_func PARAMS ((CORE_ADDR));
 124
 125 extern int inside_entry_file PARAMS ((CORE_ADDR addr));
 126
 127 extern int inside_main_func PARAMS ((CORE_ADDR pc));
 128
 129 /* From ch-lang.c, for the moment. (FIXME) */
 130
 131 extern char *chill_demangle PARAMS ((const char *));
 132
 133 /* From libiberty.a */
 134
 135 extern char *cplus_demangle PARAMS ((const char *, int));
 136
 137 extern char *cplus_mangle_opname PARAMS ((char *, int));
 138
 139 /* From libmmalloc.a (memory mapped malloc library) */
 140
 141 extern PTR mmalloc_attach PARAMS ((int, PTR));
 142
 143 extern PTR mmalloc_detach PARAMS ((PTR));
 144
 145 extern PTR mmalloc PARAMS ((PTR, long));
 146
 147 extern PTR mrealloc PARAMS ((PTR, PTR, long));
 148
 149 extern void mfree PARAMS ((PTR, PTR));
 150
 151 extern int mmalloc_setkey PARAMS ((PTR, int, PTR));
 152
 153 extern PTR mmalloc_getkey PARAMS ((PTR, int));
 154
 155 /* From utils.c */
 156
 157 extern int strcmp_iw PARAMS ((const char *, const char *));
 158
 159 extern char *safe_strerror PARAMS ((int));
 160
 161 extern char *safe_strsignal PARAMS ((int));
 162
 163 extern void init_malloc PARAMS ((void *));
 164
 165 extern void request_quit PARAMS ((int));
 166
 167 extern void do_cleanups PARAMS ((struct cleanup *));
 168
 169 extern void discard_cleanups PARAMS ((struct cleanup *));
 170
 171 /* The bare make_cleanup function is one of those rare beasts that
 172    takes almost any type of function as the first arg and anything that
 173    will fit in a "void *" as the second arg.
 174
 175    Should be, once all calls and called-functions are cleaned up:
 176 extern struct cleanup *
 177 make_cleanup PARAMS ((void (*function) (void *), void *));
 178
 179    Until then, lint and/or various type-checking compiler options will
 180    complain about make_cleanup calls.  It'd be wrong to just cast things,
 181    since the type actually passed when the function is called would be
 182    wrong.  */
 183
 184 extern struct cleanup *make_cleanup ();
 185
 186 extern struct cleanup *save_cleanups PARAMS ((void));
 187
 188 extern void restore_cleanups PARAMS ((struct cleanup *));
 189
 190 extern void free_current_contents PARAMS ((char **));
 191
 192 extern void null_cleanup PARAMS ((char **));
 193
 194 extern int myread PARAMS ((int, char *, int));
 195
 196 extern int query ();
 197 \f
 198 /* Annotation stuff.  */
 199
 200 extern int annotation_level; /* in stack.c */
 201 \f
 202 extern void begin_line PARAMS ((void));
 203
 204 extern void wrap_here PARAMS ((char *));
 205
 206 extern void reinitialize_more_filter PARAMS ((void));
 207
 208 typedef FILE GDB_FILE;
 209 #define gdb_stdout stdout
 210 #define gdb_stderr stderr
 211
 212 extern int print_insn PARAMS ((CORE_ADDR, GDB_FILE *));
 213
 214 extern void gdb_flush PARAMS ((GDB_FILE *));
 215
 216 extern GDB_FILE *gdb_fopen PARAMS ((char * name, char * mode));
 217
 218 extern void fputs_filtered PARAMS ((const char *, GDB_FILE *));
 219
 220 extern void fputs_unfiltered PARAMS ((const char *, GDB_FILE *));
 221
 222 extern void fputc_unfiltered PARAMS ((int, GDB_FILE *));
 223
 224 extern void putc_unfiltered PARAMS ((int));
 225
 226 #define putchar_unfiltered(C)  putc_unfiltered(C)
 227
 228 extern void puts_filtered PARAMS ((char *));
 229
 230 extern void puts_unfiltered PARAMS ((char *));
 231
 232 extern void vprintf_filtered ();
 233
 234 extern void vfprintf_filtered ();
 235
 236 extern void fprintf_filtered ();
 237
 238 extern void fprintfi_filtered ();
 239
 240 extern void printf_filtered ();
 241
 242 extern void printfi_filtered ();
 243
 244 extern void vprintf_unfiltered ();
 245
 246 extern void vfprintf_unfiltered ();
 247
 248 extern void fprintf_unfiltered ();
 249
 250 extern void printf_unfiltered ();
 251
 252 extern void print_spaces PARAMS ((int, GDB_FILE *));
 253
 254 extern void print_spaces_filtered PARAMS ((int, GDB_FILE *));
 255
 256 extern char *n_spaces PARAMS ((int));
 257
 258 extern void gdb_printchar PARAMS ((int, GDB_FILE *, int));
 259
 260 extern void gdb_print_address PARAMS ((void *, GDB_FILE *));
 261
 262 extern void fprintf_symbol_filtered PARAMS ((GDB_FILE *, char *,
 263                                              enum language, int));
 264
 265 extern void perror_with_name PARAMS ((char *));
 266
 267 extern void print_sys_errmsg PARAMS ((char *, int));
 268
 269 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 270    "const char *" in unistd.h, so we can't declare the argument
 271    as "char *".  */
 272
 273 extern char *re_comp PARAMS ((const char *));
 274
 275 /* From symfile.c */
 276
 277 extern void symbol_file_command PARAMS ((char *, int));
 278
 279 /* From main.c */
 280
 281 extern char *skip_quoted PARAMS ((char *));
 282
 283 extern char *gdb_readline PARAMS ((char *));
 284
 285 extern char *command_line_input PARAMS ((char *, int, char *));
 286
 287 extern void print_prompt PARAMS ((void));
 288
 289 extern int input_from_terminal_p PARAMS ((void));
 290
 291 /* From printcmd.c */
 292
 293 extern void set_next_address PARAMS ((CORE_ADDR));
 294
 295 extern void print_address_symbolic PARAMS ((CORE_ADDR, GDB_FILE *, int,
 296                                             char *));
 297
 298 extern void print_address_numeric PARAMS ((CORE_ADDR, int, GDB_FILE *));
 299
 300 extern void print_address PARAMS ((CORE_ADDR, GDB_FILE *));
 301
 302 /* From source.c */
 303
 304 extern int openp PARAMS ((char *, int, char *, int, int, char **));
 305
 306 extern void mod_path PARAMS ((char *, char **));
 307
 308 extern void directory_command PARAMS ((char *, int));
 309
 310 extern void init_source_path PARAMS ((void));
 311
 312 /* From findvar.c */
 313
 314 extern int read_relative_register_raw_bytes PARAMS ((int, char *));
 315
 316 /* From readline (but not in any readline .h files).  */
 317
 318 extern char *tilde_expand PARAMS ((char *));
 319
 320 /* Structure for saved commands lines
 321    (for breakpoints, defined commands, etc).  */
 322
 323 struct command_line
 324 {
 325   struct command_line *next;
 326   char *line;
 327 };
 328
 329 extern struct command_line *read_command_lines PARAMS ((void));
 330
 331 extern void free_command_lines PARAMS ((struct command_line **));
 332
 333 /* String containing the current directory (what getwd would return).  */
 334
 335 extern char *current_directory;
 336
 337 /* Default radixes for input and output.  Only some values supported.  */
 338 extern unsigned input_radix;
 339 extern unsigned output_radix;
 340
 341 /* Possibilities for prettyprint parameters to routines which print
 342    things.  Like enum language, this should be in value.h, but needs
 343    to be here for the same reason.  FIXME:  If we can eliminate this
 344    as an arg to LA_VAL_PRINT, then we can probably move it back to
 345    value.h. */
 346
 347 enum val_prettyprint
 348 {
 349   Val_no_prettyprint = 0,
 350   Val_prettyprint,
 351   /* Use the default setting which the user has specified.  */
 352   Val_pretty_default
 353 };
 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 /* Native machine support.  This will be a symlink to one of the
 362    nm-*.h files, built by the `configure' script.  */
 363
 364 #include "nm.h"
 365
 366 /* If the xm.h file did not define the mode string used to open the
 367    files, assume that binary files are opened the same way as text
 368    files */
 369 #ifndef FOPEN_RB
 370 #include "fopen-same.h"
 371 #endif
 372
 373 /*
 374  * Allow things in gdb to be declared "const".  If compiling ANSI, it
 375  * just works.  If compiling with gcc but non-ansi, redefine to __const__.
 376  * If non-ansi, non-gcc, then eliminate "const" entirely, making those
 377  * objects be read-write rather than read-only.
 378  */
 379
 380 #ifndef const
 381 #ifndef __STDC__
 382 # ifdef __GNUC__
 383 #  define const __const__
 384 # else
 385 #  define const /*nothing*/
 386 # endif /* GNUC */
 387 #endif /* STDC */
 388 #endif /* const */
 389
 390 #ifndef volatile
 391 #ifndef __STDC__
 392 # ifdef __GNUC__
 393 #  define volatile __volatile__
 394 # else
 395 #  define volatile /*nothing*/
 396 # endif /* GNUC */
 397 #endif /* STDC */
 398 #endif /* volatile */
 399
 400 /* The ability to declare that a function never returns is useful, but
 401    not really required to compile GDB successfully, so the NORETURN and
 402    ATTR_NORETURN macros normally expand into nothing.  */
 403
 404 /* If compiling with older versions of GCC, a function may be declared
 405    "volatile" to indicate that it does not return.  */
 406
 407 #ifndef NORETURN
 408 # if defined(__GNUC__) \
 409      && (__GNUC__ == 1 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5))
 410 #  define NORETURN volatile
 411 # else
 412 #  define NORETURN /* nothing */
 413 # endif
 414 #endif
 415
 416 /* GCC 2.5 and later versions define a function attribute "noreturn",
 417    which is the preferred way to declare that a function never returns.  */
 418
 419 #ifndef ATTR_NORETURN
 420 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 5
 421 #  define ATTR_NORETURN __attribute__ ((noreturn))
 422 # else
 423 #  define ATTR_NORETURN /* nothing */
 424 # endif
 425 #endif
 426
 427 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).  */
 428
 429 #if !defined (UINT_MAX)
 430 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 431 #endif
 432
 433 #if !defined (INT_MAX)
 434 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 435 #endif
 436
 437 #if !defined (INT_MIN)
 438 #define INT_MIN (-INT_MAX - 1)                  /* 0x80000000 for 32-bits */
 439 #endif
 440
 441 #if !defined (ULONG_MAX)
 442 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 443 #endif
 444
 445 #if !defined (LONG_MAX)
 446 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 447 #endif
 448
 449 #ifdef BFD64
 450
 451 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
 452
 453 #define LONGEST BFD_HOST_64_BIT
 454
 455 #else /* No BFD64 */
 456
 457 /* If all compilers for this host support "long long" and we want to
 458    use it for LONGEST (the performance hit is about 10% on a testsuite
 459    run based on one DECstation test), then the xm.h file can define
 460    CC_HAS_LONG_LONG.
 461
 462    Using GCC 1.39 on BSDI with long long causes about 700 new
 463    testsuite failures.  Using long long for LONGEST on the DECstation
 464    causes 3 new FAILs in the testsuite and many heuristic fencepost
 465    warnings.  These are not investigated, but a first guess would be
 466    that the BSDI problems are GCC bugs in long long support and the
 467    latter are GDB bugs.  */
 468
 469 #ifndef CC_HAS_LONG_LONG
 470 #  if defined (__GNUC__) && defined (FORCE_LONG_LONG)
 471 #    define CC_HAS_LONG_LONG 1
 472 #  endif
 473 #endif
 474
 475 /* LONGEST should not be a typedef, because "unsigned LONGEST" needs to work.
 476    CC_HAS_LONG_LONG is defined if the host compiler supports "long long"
 477    variables and we wish to make use of that support.  */
 478
 479 #ifndef LONGEST
 480 #  ifdef CC_HAS_LONG_LONG
 481 #    define LONGEST long long
 482 #  else
 483 #    define LONGEST long
 484 #  endif
 485 #endif
 486
 487 #endif /* No BFD64 */
 488
 489 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 490    arguments to a function, number in a value history, register number, etc.)
 491    where the value must not be larger than can fit in an int.  */
 492
 493 extern int longest_to_int PARAMS ((LONGEST));
 494
 495 /* Assorted functions we can declare, now that const and volatile are
 496    defined.  */
 497
 498 extern char *savestring PARAMS ((const char *, int));
 499
 500 extern char *msavestring PARAMS ((void *, const char *, int));
 501
 502 extern char *strsave PARAMS ((const char *));
 503
 504 extern char *mstrsave PARAMS ((void *, const char *));
 505
 506 extern PTR xmalloc PARAMS ((long));
 507
 508 extern PTR xrealloc PARAMS ((PTR, long));
 509
 510 extern PTR xmmalloc PARAMS ((PTR, long));
 511
 512 extern PTR xmrealloc PARAMS ((PTR, PTR, long));
 513
 514 extern PTR mmalloc PARAMS ((PTR, long));
 515
 516 extern PTR mrealloc PARAMS ((PTR, PTR, long));
 517
 518 extern void mfree PARAMS ((PTR, PTR));
 519
 520 extern int mmcheck PARAMS ((PTR, void (*) (void)));
 521
 522 extern int mmtrace PARAMS ((void));
 523
 524 extern int parse_escape PARAMS ((char **));
 525
 526 extern const char * const reg_names[];
 527
 528 /* Message to be printed before the error message, when an error occurs.  */
 529
 530 extern char *error_pre_print;
 531
 532 /* Message to be printed before the warning message, when a warning occurs.  */
 533
 534 extern char *warning_pre_print;
 535
 536 extern NORETURN void error () ATTR_NORETURN;
 537
 538 extern void error_begin PARAMS ((void));
 539
 540 extern NORETURN void fatal () ATTR_NORETURN;
 541
 542 extern NORETURN void exit PARAMS ((int)) ATTR_NORETURN; /* 4.10.4.3 */
 543
 544 extern NORETURN void nomem PARAMS ((long)) ATTR_NORETURN;
 545
 546 /* Reasons for calling return_to_top_level.  */
 547 enum return_reason {
 548   /* User interrupt.  */
 549   RETURN_QUIT,
 550
 551   /* Any other error.  */
 552   RETURN_ERROR
 553 };
 554
 555 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 556 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 557 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 558 typedef int return_mask;
 559
 560 extern NORETURN void
 561 return_to_top_level PARAMS ((enum return_reason)) ATTR_NORETURN;
 562
 563 extern int
 564 catch_errors PARAMS ((int (*) (char *), void *, char *, return_mask));
 565
 566 extern void warning_setup PARAMS ((void));
 567
 568 extern void warning ();
 569
 570 /* Global functions from other, non-gdb GNU thingies.
 571    Libiberty thingies are no longer declared here.  We include libiberty.h
 572    above, instead.  */
 573
 574 extern char *getenv PARAMS ((const char *));
 575
 576 /* From other system libraries */
 577
 578 #ifndef PSIGNAL_IN_SIGNAL_H
 579 extern void psignal PARAMS ((unsigned, const char *));
 580 #endif
 581
 582 /* For now, we can't include <stdlib.h> because it conflicts with
 583    "../include/getopt.h".  (FIXME)
 584
 585    However, if a function is defined in the ANSI C standard and a prototype
 586    for that function is defined and visible in any header file in an ANSI
 587    conforming environment, then that prototype must match the definition in
 588    the ANSI standard.  So we can just duplicate them here without conflict,
 589    since they must be the same in all conforming ANSI environments.  If
 590    these cause problems, then the environment is not ANSI conformant. */
 591
 592 #ifdef __STDC__
 593 #include <stddef.h>
 594 #endif
 595
 596 extern int fclose PARAMS ((GDB_FILE *stream));          /* 4.9.5.1 */
 597
 598 extern void perror PARAMS ((const char *));             /* 4.9.10.4 */
 599
 600 extern double atof PARAMS ((const char *nptr));         /* 4.10.1.1 */
 601
 602 extern int atoi PARAMS ((const char *));                /* 4.10.1.2 */
 603
 604 #ifndef MALLOC_INCOMPATIBLE
 605
 606 extern PTR malloc PARAMS ((size_t size));               /* 4.10.3.3 */
 607
 608 extern PTR realloc PARAMS ((void *ptr, size_t size));   /* 4.10.3.4 */
 609
 610 extern void free PARAMS ((void *));                     /* 4.10.3.2 */
 611
 612 #endif  /* MALLOC_INCOMPATIBLE */
 613
 614 extern void
 615 qsort PARAMS ((void *base, size_t nmemb,                /* 4.10.5.2 */
 616                size_t size,
 617                int (*compar)(const void *, const void *)));
 618
 619 #ifndef MEM_FNS_DECLARED        /* Some non-ANSI use void *, not char *.  */
 620 extern PTR memcpy PARAMS ((void *, const void *, size_t));  /* 4.11.2.1 */
 621
 622 extern int memcmp PARAMS ((const void *, const void *, size_t)); /* 4.11.4.1 */
 623 #endif
 624
 625 extern char *strchr PARAMS ((const char *, int));       /* 4.11.5.2 */
 626
 627 extern char *strrchr PARAMS ((const char *, int));      /* 4.11.5.5 */
 628
 629 extern char *strstr PARAMS ((const char *, const char *)); /* 4.11.5.7 */
 630
 631 extern char *strtok PARAMS ((char *, const char *));    /* 4.11.5.8 */
 632
 633 #ifndef MEM_FNS_DECLARED        /* Some non-ANSI use void *, not char *.  */
 634 extern PTR memset PARAMS ((void *, int, size_t));       /* 4.11.6.1 */
 635 #endif
 636
 637 extern char *strerror PARAMS ((int));                   /* 4.11.6.2 */
 638
 639 /* Various possibilities for alloca.  */
 640 #ifndef alloca
 641 # ifdef __GNUC__
 642 #  define alloca __builtin_alloca
 643 # else /* Not GNU C */
 644 #  ifdef sparc
 645 #   include <alloca.h>          /* NOTE:  Doesn't declare alloca() */
 646 #  endif
 647
 648 /* We need to be careful not to declare this in a way which conflicts with
 649    bison.  Bison never declares it as char *, but under various circumstances
 650    (like __hpux) we need to use void *.  */
 651 #  if defined (__STDC__) || defined (__hpux)
 652    extern void *alloca ();
 653 #  else /* Don't use void *.  */
 654    extern char *alloca ();
 655 #  endif /* Don't use void *.  */
 656 # endif /* Not GNU C */
 657 #endif /* alloca not defined */
 658
 659 /* TARGET_BYTE_ORDER and HOST_BYTE_ORDER must be defined to one of these.  */
 660
 661 #if !defined (BIG_ENDIAN)
 662 #define BIG_ENDIAN 4321
 663 #endif
 664
 665 #if !defined (LITTLE_ENDIAN)
 666 #define LITTLE_ENDIAN 1234
 667 #endif
 668
 669 /* Target-system-dependent parameters for GDB. */
 670
 671 /* Target machine definition.  This will be a symlink to one of the
 672    tm-*.h files, built by the `configure' script.  */
 673
 674 #include "tm.h"
 675
 676 /* Number of bits in a char or unsigned char for the target machine.
 677    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 678 #if !defined (TARGET_CHAR_BIT)
 679 #define TARGET_CHAR_BIT 8
 680 #endif
 681
 682 /* Number of bits in a short or unsigned short for the target machine. */
 683 #if !defined (TARGET_SHORT_BIT)
 684 #define TARGET_SHORT_BIT (2 * TARGET_CHAR_BIT)
 685 #endif
 686
 687 /* Number of bits in an int or unsigned int for the target machine. */
 688 #if !defined (TARGET_INT_BIT)
 689 #define TARGET_INT_BIT (4 * TARGET_CHAR_BIT)
 690 #endif
 691
 692 /* Number of bits in a long or unsigned long for the target machine. */
 693 #if !defined (TARGET_LONG_BIT)
 694 #define TARGET_LONG_BIT (4 * TARGET_CHAR_BIT)
 695 #endif
 696
 697 /* Number of bits in a long long or unsigned long long for the target machine. */
 698 #if !defined (TARGET_LONG_LONG_BIT)
 699 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 700 #endif
 701
 702 /* Number of bits in a float for the target machine. */
 703 #if !defined (TARGET_FLOAT_BIT)
 704 #define TARGET_FLOAT_BIT (4 * TARGET_CHAR_BIT)
 705 #endif
 706
 707 /* Number of bits in a double for the target machine. */
 708 #if !defined (TARGET_DOUBLE_BIT)
 709 #define TARGET_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 710 #endif
 711
 712 /* Number of bits in a long double for the target machine.  */
 713 #if !defined (TARGET_LONG_DOUBLE_BIT)
 714 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 715 #endif
 716
 717 /* Number of bits in a "complex" for the target machine. */
 718 #if !defined (TARGET_COMPLEX_BIT)
 719 #define TARGET_COMPLEX_BIT (2 * TARGET_FLOAT_BIT)
 720 #endif
 721
 722 /* Number of bits in a "double complex" for the target machine. */
 723 #if !defined (TARGET_DOUBLE_COMPLEX_BIT)
 724 #define TARGET_DOUBLE_COMPLEX_BIT (2 * TARGET_DOUBLE_BIT)
 725 #endif
 726
 727 /* Number of bits in a pointer for the target machine */
 728 #if !defined (TARGET_PTR_BIT)
 729 #define TARGET_PTR_BIT TARGET_INT_BIT
 730 #endif
 731
 732 /* If we picked up a copy of CHAR_BIT from a configuration file
 733    (which may get it by including <limits.h>) then use it to set
 734    the number of bits in a host char.  If not, use the same size
 735    as the target. */
 736
 737 #if defined (CHAR_BIT)
 738 #define HOST_CHAR_BIT CHAR_BIT
 739 #else
 740 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 741 #endif
 742
 743 /* The bit byte-order has to do just with numbering of bits in
 744    debugging symbols and such.  Conceptually, it's quite separate
 745    from byte/word byte order.  */
 746
 747 #if !defined (BITS_BIG_ENDIAN)
 748 #if TARGET_BYTE_ORDER == BIG_ENDIAN
 749 #define BITS_BIG_ENDIAN 1
 750 #endif /* Big endian.  */
 751
 752 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
 753 #define BITS_BIG_ENDIAN 0
 754 #endif /* Little endian.  */
 755 #endif /* BITS_BIG_ENDIAN not defined.  */
 756
 757 /* In findvar.c.  */
 758
 759 extern LONGEST extract_signed_integer PARAMS ((void *, int));
 760
 761 extern unsigned LONGEST extract_unsigned_integer PARAMS ((void *, int));
 762
 763 extern CORE_ADDR extract_address PARAMS ((void *, int));
 764
 765 extern void store_signed_integer PARAMS ((void *, int, LONGEST));
 766
 767 extern void store_unsigned_integer PARAMS ((void *, int, unsigned LONGEST));
 768
 769 extern void store_address PARAMS ((void *, int, CORE_ADDR));
 770
 771 extern double extract_floating PARAMS ((void *, int));
 772
 773 extern void store_floating PARAMS ((void *, int, double));
 774 \f
 775 /* On some machines there are bits in addresses which are not really
 776    part of the address, but are used by the kernel, the hardware, etc.
 777    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
 778    so we get a "real" address such as one would find in a symbol
 779    table.  This is used only for addresses of instructions, and even then
 780    I'm not sure it's used in all contexts.  It exists to deal with there
 781    being a few stray bits in the PC which would mislead us, not as some sort
 782    of generic thing to handle alignment or segmentation (it's possible it
 783    should be in TARGET_READ_PC instead).  */
 784 #if !defined (ADDR_BITS_REMOVE)
 785 #define ADDR_BITS_REMOVE(addr) (addr)
 786 #endif /* No ADDR_BITS_REMOVE.  */
 787
 788 /* From valops.c */
 789
 790 extern CORE_ADDR push_bytes PARAMS ((CORE_ADDR, char *, int));
 791
 792 extern CORE_ADDR push_word PARAMS ((CORE_ADDR, unsigned LONGEST));
 793
 794 /* Some parts of gdb might be considered optional, in the sense that they
 795    are not essential for being able to build a working, usable debugger
 796    for a specific environment.  For example, the maintenance commands
 797    are there for the benefit of gdb maintainers.  As another example,
 798    some environments really don't need gdb's that are able to read N
 799    different object file formats.  In order to make it possible (but
 800    not necessarily recommended) to build "stripped down" versions of
 801    gdb, the following defines control selective compilation of those
 802    parts of gdb which can be safely left out when necessary.  Note that
 803    the default is to include everything. */
 804
 805 #ifndef MAINTENANCE_CMDS
 806 #define MAINTENANCE_CMDS 1
 807 #endif
 808
 809 /* Hooks for alternate command interfaces.  */
 810
 811 #ifdef __STDC__
 812 struct symtab;
 813 struct breakpoint;
 814 #endif
 815
 816 extern void (*init_ui_hook) PARAMS ((void));
 817 extern void (*command_loop_hook) PARAMS ((void));
 818 extern void (*fputs_unfiltered_hook) PARAMS ((const char *linebuffer));
 819 extern void (*print_frame_info_listing_hook) PARAMS ((struct symtab *s, int line,
 820                                                int stopline, int noerror));
 821 extern int (*query_hook) PARAMS (());
 822 extern void (*flush_hook) PARAMS ((FILE *stream));
 823 extern void (*create_breakpoint_hook) PARAMS ((struct breakpoint *b));
 824 extern void (*delete_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
 825 extern void (*enable_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
 826 extern void (*disable_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
 827
 828 /* Inhibit window interface if non-zero. */
 829
 830 extern int no_windows;
 831
 832 #endif /* !defined (DEFS_H) */