gdb/defs.h

   1 /* Basic, host-specific, and target-specific definitions for GDB.
   2    Copyright (C) 1986, 1989, 1991, 1992, 1993, 1994, 1995
   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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #ifndef DEFS_H
  22 #define DEFS_H
  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 #ifdef ANSI_PROTOTYPES
  32 #include <stdarg.h>
  33 #else
  34 #include <varargs.h>
  35 #endif
  36
  37 #include "libiberty.h"
  38
  39 /* libiberty.h can't declare this one, but evidently we can.  */
  40 extern char *strsignal PARAMS ((int));
  41
  42 #include "progress.h"
  43
  44 #ifndef NO_MMALLOC
  45 #include "mmalloc.h"
  46 #endif
  47
  48 /* For BFD64 and bfd_vma.  */
  49 #include "bfd.h"
  50
  51 /* An address in the program being debugged.  Host byte order.  Rather
  52    than duplicate all the logic in BFD which figures out what type
  53    this is (long, long long, etc.) and whether it needs to be 64
  54    bits (the host/target interactions are subtle), we just use
  55    bfd_vma.  */
  56
  57 typedef bfd_vma CORE_ADDR;
  58
  59 #define min(a, b) ((a) < (b) ? (a) : (b))
  60 #define max(a, b) ((a) > (b) ? (a) : (b))
  61
  62 /* Gdb does *lots* of string compares.  Use macros to speed them up by
  63    avoiding function calls if the first characters are not the same. */
  64
  65 #define STRCMP(a,b) (*(a) == *(b) ? strcmp ((a), (b)) : (int)*(a) - (int)*(b))
  66 #define STREQ(a,b) (*(a) == *(b) ? !strcmp ((a), (b)) : 0)
  67 #define STREQN(a,b,c) (*(a) == *(b) ? !strncmp ((a), (b), (c)) : 0)
  68
  69 /* The character GNU C++ uses to build identifiers that must be unique from
  70    the program's identifiers (such as $this and $$vptr).  */
  71 #define CPLUS_MARKER '$'        /* May be overridden to '.' for SysV */
  72
  73 #include <errno.h>              /* System call error return status */
  74
  75 extern int quit_flag;
  76 extern int immediate_quit;
  77 extern int sevenbit_strings;
  78
  79 extern void quit PARAMS ((void));
  80
  81 #define QUIT { \
  82   if (quit_flag) quit (); \
  83   if (interactive_hook) interactive_hook (); \
  84   PROGRESS (1); \
  85 }
  86
  87 /* Command classes are top-level categories into which commands are broken
  88    down for "help" purposes.
  89    Notes on classes: class_alias is for alias commands which are not
  90    abbreviations of the original command.  class-pseudo is for commands
  91    which are not really commands nor help topics ("stop").  */
  92
  93 enum command_class
  94 {
  95   /* Special args to help_list */
  96   all_classes = -2, all_commands = -1,
  97   /* Classes of commands */
  98   no_class = -1, class_run = 0, class_vars, class_stack,
  99   class_files, class_support, class_info, class_breakpoint,
 100   class_alias, class_obscure, class_user, class_maintenance,
 101   class_pseudo
 102 };
 103
 104 /* Languages represented in the symbol table and elsewhere.
 105    This should probably be in language.h, but since enum's can't
 106    be forward declared to satisfy opaque references before their
 107    actual definition, needs to be here. */
 108
 109 enum language
 110 {
 111    language_unknown,            /* Language not known */
 112    language_auto,               /* Placeholder for automatic setting */
 113    language_c,                  /* C */
 114    language_cplus,              /* C++ */
 115    language_chill,              /* Chill */
 116    language_fortran,            /* Fortran */
 117    language_m2,                 /* Modula-2 */
 118    language_asm                 /* Assembly language */
 119 };
 120
 121 /* the cleanup list records things that have to be undone
 122    if an error happens (descriptors to be closed, memory to be freed, etc.)
 123    Each link in the chain records a function to call and an
 124    argument to give it.
 125
 126    Use make_cleanup to add an element to the cleanup chain.
 127    Use do_cleanups to do all cleanup actions back to a given
 128    point in the chain.  Use discard_cleanups to remove cleanups
 129    from the chain back to a given point, not doing them.  */
 130
 131 struct cleanup
 132 {
 133   struct cleanup *next;
 134   void (*function) PARAMS ((PTR));
 135   PTR arg;
 136 };
 137
 138
 139 /* The ability to declare that a function never returns is useful, but
 140    not really required to compile GDB successfully, so the NORETURN and
 141    ATTR_NORETURN macros normally expand into nothing.  */
 142
 143 /* If compiling with older versions of GCC, a function may be declared
 144    "volatile" to indicate that it does not return.  */
 145
 146 #ifndef NORETURN
 147 # if defined(__GNUC__) \
 148      && (__GNUC__ == 1 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7))
 149 #  define NORETURN volatile
 150 # else
 151 #  define NORETURN /* nothing */
 152 # endif
 153 #endif
 154
 155 /* GCC 2.5 and later versions define a function attribute "noreturn",
 156    which is the preferred way to declare that a function never returns.
 157    However GCC 2.7 appears to be the first version in which this fully
 158    works everywhere we use it. */
 159
 160 #ifndef ATTR_NORETURN
 161 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 7
 162 #  define ATTR_NORETURN __attribute__ ((noreturn))
 163 # else
 164 #  define ATTR_NORETURN /* nothing */
 165 # endif
 166 #endif
 167
 168 #ifndef ATTR_FORMAT
 169 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 4 && defined (__ANSI_PROTOTYPES)
 170 #  define ATTR_FORMAT(type, x, y) __attribute__ ((format(type, x, y)))
 171 # else
 172 #  define ATTR_FORMAT(type, x, y) /* nothing */
 173 # endif
 174 #endif
 175
 176 /* Needed for various prototypes */
 177
 178 #ifdef __STDC__
 179 struct symtab;
 180 struct breakpoint;
 181 #endif
 182
 183 /* From blockframe.c */
 184
 185 extern int inside_entry_func PARAMS ((CORE_ADDR));
 186
 187 extern int inside_entry_file PARAMS ((CORE_ADDR addr));
 188
 189 extern int inside_main_func PARAMS ((CORE_ADDR pc));
 190
 191 /* From ch-lang.c, for the moment. (FIXME) */
 192
 193 extern char *chill_demangle PARAMS ((const char *));
 194
 195 /* From utils.c */
 196
 197 extern int strcmp_iw PARAMS ((const char *, const char *));
 198
 199 extern char *safe_strerror PARAMS ((int));
 200
 201 extern char *safe_strsignal PARAMS ((int));
 202
 203 extern void init_malloc PARAMS ((void *));
 204
 205 extern void request_quit PARAMS ((int));
 206
 207 extern void do_cleanups PARAMS ((struct cleanup *));
 208
 209 extern void discard_cleanups PARAMS ((struct cleanup *));
 210
 211 /* The bare make_cleanup function is one of those rare beasts that
 212    takes almost any type of function as the first arg and anything that
 213    will fit in a "void *" as the second arg.
 214
 215    Should be, once all calls and called-functions are cleaned up:
 216 extern struct cleanup *
 217 make_cleanup PARAMS ((void (*function) (void *), void *));
 218
 219    Until then, lint and/or various type-checking compiler options will
 220    complain about make_cleanup calls.  It'd be wrong to just cast things,
 221    since the type actually passed when the function is called would be
 222    wrong.  */
 223
 224 extern struct cleanup *make_cleanup ();
 225
 226 extern struct cleanup *save_cleanups PARAMS ((void));
 227
 228 extern void restore_cleanups PARAMS ((struct cleanup *));
 229
 230 extern void free_current_contents PARAMS ((char **));
 231
 232 extern void null_cleanup PARAMS ((char **));
 233
 234 extern int myread PARAMS ((int, char *, int));
 235
 236 extern int query PARAMS((char *, ...))
 237      ATTR_FORMAT(printf, 1, 2);
 238 \f
 239 /* Annotation stuff.  */
 240
 241 extern int annotation_level; /* in stack.c */
 242 \f
 243 extern void begin_line PARAMS ((void));
 244
 245 extern void wrap_here PARAMS ((char *));
 246
 247 extern void reinitialize_more_filter PARAMS ((void));
 248
 249 typedef FILE GDB_FILE;
 250 #define gdb_stdout stdout
 251 #define gdb_stderr stderr
 252
 253 extern void gdb_flush PARAMS ((GDB_FILE *));
 254
 255 extern GDB_FILE *gdb_fopen PARAMS ((char * name, char * mode));
 256
 257 extern void fputs_filtered PARAMS ((const char *, GDB_FILE *));
 258
 259 extern void fputs_unfiltered PARAMS ((const char *, GDB_FILE *));
 260
 261 extern int fputc_unfiltered PARAMS ((int c, GDB_FILE *));
 262
 263 extern int putchar_unfiltered PARAMS ((int c));
 264
 265 extern void puts_filtered PARAMS ((char *));
 266
 267 extern void puts_unfiltered PARAMS ((char *));
 268
 269 extern void vprintf_filtered PARAMS ((char *, va_list))
 270      ATTR_FORMAT(printf, 1, 0);
 271
 272 extern void vfprintf_filtered PARAMS ((FILE *, char *, va_list))
 273      ATTR_FORMAT(printf, 2, 0);
 274
 275 extern void fprintf_filtered PARAMS ((FILE *, char *, ...))
 276      ATTR_FORMAT(printf, 2, 3);
 277
 278 extern void fprintfi_filtered PARAMS ((int, FILE *, char *, ...))
 279      ATTR_FORMAT(printf, 3, 4);
 280
 281 extern void printf_filtered PARAMS ((char *, ...))
 282      ATTR_FORMAT(printf, 1, 2);
 283
 284 extern void printfi_filtered PARAMS ((int, char *, ...))
 285      ATTR_FORMAT(printf, 2, 3);
 286
 287 extern void vprintf_unfiltered PARAMS ((char *, va_list))
 288      ATTR_FORMAT(printf, 1, 0);
 289
 290 extern void vfprintf_unfiltered PARAMS ((FILE *, char *, va_list))
 291      ATTR_FORMAT(printf, 2, 0);
 292
 293 extern void fprintf_unfiltered PARAMS ((FILE *, char *, ...))
 294      ATTR_FORMAT(printf, 2, 3);
 295
 296 extern void printf_unfiltered PARAMS ((char *, ...))
 297      ATTR_FORMAT(printf, 1, 2);
 298
 299 extern void print_spaces PARAMS ((int, GDB_FILE *));
 300
 301 extern void print_spaces_filtered PARAMS ((int, GDB_FILE *));
 302
 303 extern char *n_spaces PARAMS ((int));
 304
 305 extern void gdb_printchar PARAMS ((int, GDB_FILE *, int));
 306
 307 extern void gdb_print_address PARAMS ((void *, GDB_FILE *));
 308
 309 extern void fprintf_symbol_filtered PARAMS ((GDB_FILE *, char *,
 310                                              enum language, int));
 311
 312 extern void perror_with_name PARAMS ((char *));
 313
 314 extern void print_sys_errmsg PARAMS ((char *, int));
 315
 316 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 317    "const char *" in unistd.h, so we can't declare the argument
 318    as "char *".  */
 319
 320 extern char *re_comp PARAMS ((const char *));
 321
 322 /* From symfile.c */
 323
 324 extern void symbol_file_command PARAMS ((char *, int));
 325
 326 /* From top.c */
 327
 328 extern char *skip_quoted PARAMS ((char *));
 329
 330 extern char *gdb_readline PARAMS ((char *));
 331
 332 extern char *command_line_input PARAMS ((char *, int, char *));
 333
 334 extern void print_prompt PARAMS ((void));
 335
 336 extern int input_from_terminal_p PARAMS ((void));
 337
 338 extern int info_verbose;
 339
 340 /* From printcmd.c */
 341
 342 extern void set_next_address PARAMS ((CORE_ADDR));
 343
 344 extern void print_address_symbolic PARAMS ((CORE_ADDR, GDB_FILE *, int,
 345                                             char *));
 346
 347 extern void print_address_numeric PARAMS ((CORE_ADDR, int, GDB_FILE *));
 348
 349 extern void print_address PARAMS ((CORE_ADDR, GDB_FILE *));
 350
 351 /* From source.c */
 352
 353 extern int openp PARAMS ((char *, int, char *, int, int, char **));
 354
 355 extern void mod_path PARAMS ((char *, char **));
 356
 357 extern void directory_command PARAMS ((char *, int));
 358
 359 extern void init_source_path PARAMS ((void));
 360
 361 extern char *symtab_to_filename PARAMS ((struct symtab *));
 362
 363 /* From findvar.c */
 364
 365 extern int read_relative_register_raw_bytes PARAMS ((int, char *));
 366
 367 /* From readline (but not in any readline .h files).  */
 368
 369 extern char *tilde_expand PARAMS ((char *));
 370
 371 /* Control types for commands */
 372
 373 enum misc_command_type
 374 {
 375   ok_command,
 376   end_command,
 377   else_command,
 378   nop_command
 379 };
 380
 381 enum command_control_type
 382 {
 383   simple_control,
 384   break_control,
 385   continue_control,
 386   while_control,
 387   if_control,
 388   invalid_control
 389 };
 390
 391 /* Structure for saved commands lines
 392    (for breakpoints, defined commands, etc).  */
 393
 394 struct command_line
 395 {
 396   struct command_line *next;
 397   char *line;
 398   enum command_control_type control_type;
 399   int body_count;
 400   struct command_line **body_list;
 401 };
 402
 403 extern struct command_line *read_command_lines PARAMS ((void));
 404
 405 extern void free_command_lines PARAMS ((struct command_line **));
 406
 407 /* String containing the current directory (what getwd would return).  */
 408
 409 extern char *current_directory;
 410
 411 /* Default radixes for input and output.  Only some values supported.  */
 412 extern unsigned input_radix;
 413 extern unsigned output_radix;
 414
 415 /* Possibilities for prettyprint parameters to routines which print
 416    things.  Like enum language, this should be in value.h, but needs
 417    to be here for the same reason.  FIXME:  If we can eliminate this
 418    as an arg to LA_VAL_PRINT, then we can probably move it back to
 419    value.h. */
 420
 421 enum val_prettyprint
 422 {
 423   Val_no_prettyprint = 0,
 424   Val_prettyprint,
 425   /* Use the default setting which the user has specified.  */
 426   Val_pretty_default
 427 };
 428
 429 \f
 430 /* Host machine definition.  This will be a symlink to one of the
 431    xm-*.h files, built by the `configure' script.  */
 432
 433 #include "xm.h"
 434
 435 /* Native machine support.  This will be a symlink to one of the
 436    nm-*.h files, built by the `configure' script.  */
 437
 438 #include "nm.h"
 439
 440 /* Target machine definition.  This will be a symlink to one of the
 441    tm-*.h files, built by the `configure' script.  */
 442
 443 #include "tm.h"
 444
 445 /* If the xm.h file did not define the mode string used to open the
 446    files, assume that binary files are opened the same way as text
 447    files */
 448 #ifndef FOPEN_RB
 449 #include "fopen-same.h"
 450 #endif
 451
 452 /*
 453  * Allow things in gdb to be declared "const".  If compiling ANSI, it
 454  * just works.  If compiling with gcc but non-ansi, redefine to __const__.
 455  * If non-ansi, non-gcc, then eliminate "const" entirely, making those
 456  * objects be read-write rather than read-only.
 457  */
 458
 459 #ifndef const
 460 #ifndef __STDC__
 461 # ifdef __GNUC__
 462 #  define const __const__
 463 # else
 464 #  define const /*nothing*/
 465 # endif /* GNUC */
 466 #endif /* STDC */
 467 #endif /* const */
 468
 469 #ifndef volatile
 470 #ifndef __STDC__
 471 # ifdef __GNUC__
 472 #  define volatile __volatile__
 473 # else
 474 #  define volatile /*nothing*/
 475 # endif /* GNUC */
 476 #endif /* STDC */
 477 #endif /* volatile */
 478
 479 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).  */
 480
 481 #if !defined (UINT_MAX)
 482 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 483 #endif
 484
 485 #if !defined (INT_MAX)
 486 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 487 #endif
 488
 489 #if !defined (INT_MIN)
 490 #define INT_MIN (-INT_MAX - 1)                  /* 0x80000000 for 32-bits */
 491 #endif
 492
 493 #if !defined (ULONG_MAX)
 494 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 495 #endif
 496
 497 #if !defined (LONG_MAX)
 498 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 499 #endif
 500
 501 #ifdef BFD64
 502
 503 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
 504
 505 #define LONGEST BFD_HOST_64_BIT
 506
 507 #else /* No BFD64 */
 508
 509 /* If all compilers for this host support "long long" and we want to
 510    use it for LONGEST (the performance hit is about 10% on a testsuite
 511    run based on one DECstation test), then the xm.h file can define
 512    CC_HAS_LONG_LONG.
 513
 514    Using GCC 1.39 on BSDI with long long causes about 700 new
 515    testsuite failures.  Using long long for LONGEST on the DECstation
 516    causes 3 new FAILs in the testsuite and many heuristic fencepost
 517    warnings.  These are not investigated, but a first guess would be
 518    that the BSDI problems are GCC bugs in long long support and the
 519    latter are GDB bugs.  */
 520
 521 #ifndef CC_HAS_LONG_LONG
 522 #  if defined (__GNUC__) && defined (FORCE_LONG_LONG)
 523 #    define CC_HAS_LONG_LONG 1
 524 #  endif
 525 #endif
 526
 527 /* LONGEST should not be a typedef, because "unsigned LONGEST" needs to work.
 528    CC_HAS_LONG_LONG is defined if the host compiler supports "long long"
 529    variables and we wish to make use of that support.  */
 530
 531 #ifndef LONGEST
 532 #  ifdef CC_HAS_LONG_LONG
 533 #    define LONGEST long long
 534 #  else
 535 #    define LONGEST long
 536 #  endif
 537 #endif
 538
 539 #endif /* No BFD64 */
 540
 541 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 542    arguments to a function, number in a value history, register number, etc.)
 543    where the value must not be larger than can fit in an int.  */
 544
 545 extern int longest_to_int PARAMS ((LONGEST));
 546
 547 /* Assorted functions we can declare, now that const and volatile are
 548    defined.  */
 549
 550 extern char *savestring PARAMS ((const char *, int));
 551
 552 extern char *msavestring PARAMS ((void *, const char *, int));
 553
 554 extern char *strsave PARAMS ((const char *));
 555
 556 extern char *mstrsave PARAMS ((void *, const char *));
 557
 558 extern PTR xmmalloc PARAMS ((PTR, long));
 559
 560 extern PTR xmrealloc PARAMS ((PTR, PTR, long));
 561
 562 extern int parse_escape PARAMS ((char **));
 563
 564 extern char *reg_names[];
 565
 566 /* Message to be printed before the error message, when an error occurs.  */
 567
 568 extern char *error_pre_print;
 569
 570 /* Message to be printed before the error message, when an error occurs.  */
 571
 572 extern char *quit_pre_print;
 573
 574 /* Message to be printed before the warning message, when a warning occurs.  */
 575
 576 extern char *warning_pre_print;
 577
 578 extern NORETURN void error PARAMS((char *, ...)) ATTR_NORETURN;
 579
 580 extern void error_begin PARAMS ((void));
 581
 582 extern NORETURN void fatal PARAMS((char *, ...)) ATTR_NORETURN;
 583
 584 extern NORETURN void nomem PARAMS ((long)) ATTR_NORETURN;
 585
 586 /* Reasons for calling return_to_top_level.  */
 587 enum return_reason {
 588   /* User interrupt.  */
 589   RETURN_QUIT,
 590
 591   /* Any other error.  */
 592   RETURN_ERROR
 593 };
 594
 595 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 596 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 597 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 598 typedef int return_mask;
 599
 600 extern NORETURN void
 601 return_to_top_level PARAMS ((enum return_reason)) ATTR_NORETURN;
 602
 603 extern int
 604 catch_errors PARAMS ((int (*) (char *), void *, char *, return_mask));
 605
 606 extern void warning_begin PARAMS ((void));
 607
 608 extern void warning PARAMS ((char *, ...))
 609      ATTR_FORMAT(printf, 1, 2);
 610
 611 /* Global functions from other, non-gdb GNU thingies.
 612    Libiberty thingies are no longer declared here.  We include libiberty.h
 613    above, instead.  */
 614
 615 #ifndef GETENV_PROVIDED
 616 extern char *getenv PARAMS ((const char *));
 617 #endif
 618
 619 /* From other system libraries */
 620
 621 #ifdef __STDC__
 622 #include <stddef.h>
 623 #include <stdlib.h>
 624 #endif
 625
 626
 627 /* We take the address of fclose later, but some stdio's forget
 628    to declare this.  We can't always declare it since there's
 629    no way to declare the parameters without upsetting some compiler
 630    somewhere. */
 631
 632 #ifndef FCLOSE_PROVIDED
 633 extern int fclose ();
 634 #endif
 635
 636 #ifndef atof
 637 extern double atof ();
 638 #endif
 639
 640 #ifndef MALLOC_INCOMPATIBLE
 641
 642 extern PTR malloc ();
 643
 644 extern PTR realloc ();
 645
 646 extern void free ();
 647
 648 #endif /* MALLOC_INCOMPATIBLE */
 649
 650 #ifndef WIN32
 651
 652 #ifndef strchr
 653 extern char *strchr ();
 654 #endif
 655
 656 #ifndef strrchr
 657 extern char *strrchr ();
 658 #endif
 659
 660 #ifndef strstr
 661 extern char *strstr ();
 662 #endif
 663
 664 #ifndef strtok
 665 extern char *strtok ();
 666 #endif
 667
 668 #ifndef strerror
 669 extern char *strerror ();
 670 #endif
 671
 672 #endif  /* !WIN32 */
 673
 674 /* Various possibilities for alloca.  */
 675 #ifndef alloca
 676 # ifdef __GNUC__
 677 #  define alloca __builtin_alloca
 678 # else /* Not GNU C */
 679 #  ifdef sparc
 680 #   include <alloca.h>          /* NOTE:  Doesn't declare alloca() */
 681 #  endif
 682
 683 /* We need to be careful not to declare this in a way which conflicts with
 684    bison.  Bison never declares it as char *, but under various circumstances
 685    (like __hpux) we need to use void *.  */
 686 #  if defined (__STDC__) || defined (__hpux)
 687    extern void *alloca ();
 688 #  else /* Don't use void *.  */
 689    extern char *alloca ();
 690 #  endif /* Don't use void *.  */
 691 # endif /* Not GNU C */
 692 #endif /* alloca not defined */
 693
 694 /* HOST_BYTE_ORDER must be defined to one of these.  */
 695
 696 #if !defined (BIG_ENDIAN)
 697 #define BIG_ENDIAN 4321
 698 #endif
 699
 700 #if !defined (LITTLE_ENDIAN)
 701 #define LITTLE_ENDIAN 1234
 702 #endif
 703
 704 /* Target-system-dependent parameters for GDB. */
 705
 706 #ifdef TARGET_BYTE_ORDER_SELECTABLE
 707 /* The target endianness is selectable at runtime.  Define
 708    TARGET_BYTE_ORDER to be a variable.  The user can use the `set
 709    endian' command to change it.  */
 710 #undef TARGET_BYTE_ORDER
 711 #define TARGET_BYTE_ORDER target_byte_order
 712 extern int target_byte_order;
 713 #endif
 714
 715 extern void set_endian_from_file PARAMS ((bfd *));
 716
 717 /* Number of bits in a char or unsigned char for the target machine.
 718    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 719 #if !defined (TARGET_CHAR_BIT)
 720 #define TARGET_CHAR_BIT 8
 721 #endif
 722
 723 /* Number of bits in a short or unsigned short for the target machine. */
 724 #if !defined (TARGET_SHORT_BIT)
 725 #define TARGET_SHORT_BIT (2 * TARGET_CHAR_BIT)
 726 #endif
 727
 728 /* Number of bits in an int or unsigned int for the target machine. */
 729 #if !defined (TARGET_INT_BIT)
 730 #define TARGET_INT_BIT (4 * TARGET_CHAR_BIT)
 731 #endif
 732
 733 /* Number of bits in a long or unsigned long for the target machine. */
 734 #if !defined (TARGET_LONG_BIT)
 735 #define TARGET_LONG_BIT (4 * TARGET_CHAR_BIT)
 736 #endif
 737
 738 /* Number of bits in a long long or unsigned long long for the target machine. */
 739 #if !defined (TARGET_LONG_LONG_BIT)
 740 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 741 #endif
 742
 743 /* Number of bits in a float for the target machine. */
 744 #if !defined (TARGET_FLOAT_BIT)
 745 #define TARGET_FLOAT_BIT (4 * TARGET_CHAR_BIT)
 746 #endif
 747
 748 /* Number of bits in a double for the target machine. */
 749 #if !defined (TARGET_DOUBLE_BIT)
 750 #define TARGET_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 751 #endif
 752
 753 /* Number of bits in a long double for the target machine.  */
 754 #if !defined (TARGET_LONG_DOUBLE_BIT)
 755 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 756 #endif
 757
 758 /* Number of bits in a pointer for the target machine */
 759 #if !defined (TARGET_PTR_BIT)
 760 #define TARGET_PTR_BIT TARGET_INT_BIT
 761 #endif
 762
 763 /* If we picked up a copy of CHAR_BIT from a configuration file
 764    (which may get it by including <limits.h>) then use it to set
 765    the number of bits in a host char.  If not, use the same size
 766    as the target. */
 767
 768 #if defined (CHAR_BIT)
 769 #define HOST_CHAR_BIT CHAR_BIT
 770 #else
 771 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 772 #endif
 773
 774 /* The bit byte-order has to do just with numbering of bits in
 775    debugging symbols and such.  Conceptually, it's quite separate
 776    from byte/word byte order.  */
 777
 778 #if !defined (BITS_BIG_ENDIAN)
 779 #ifndef TARGET_BYTE_ORDER_SELECTABLE
 780
 781 #if TARGET_BYTE_ORDER == BIG_ENDIAN
 782 #define BITS_BIG_ENDIAN 1
 783 #endif /* Big endian.  */
 784
 785 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
 786 #define BITS_BIG_ENDIAN 0
 787 #endif /* Little endian.  */
 788
 789 #else /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
 790
 791 #define BITS_BIG_ENDIAN (TARGET_BYTE_ORDER == BIG_ENDIAN)
 792
 793 #endif /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
 794 #endif /* BITS_BIG_ENDIAN not defined.  */
 795
 796 /* In findvar.c.  */
 797
 798 extern LONGEST extract_signed_integer PARAMS ((void *, int));
 799
 800 extern unsigned LONGEST extract_unsigned_integer PARAMS ((void *, int));
 801
 802 extern CORE_ADDR extract_address PARAMS ((void *, int));
 803
 804 extern void store_signed_integer PARAMS ((void *, int, LONGEST));
 805
 806 extern void store_unsigned_integer PARAMS ((void *, int, unsigned LONGEST));
 807
 808 extern void store_address PARAMS ((void *, int, CORE_ADDR));
 809
 810 extern double extract_floating PARAMS ((void *, int));
 811
 812 extern void store_floating PARAMS ((void *, int, double));
 813 \f
 814 /* On some machines there are bits in addresses which are not really
 815    part of the address, but are used by the kernel, the hardware, etc.
 816    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
 817    so we get a "real" address such as one would find in a symbol
 818    table.  This is used only for addresses of instructions, and even then
 819    I'm not sure it's used in all contexts.  It exists to deal with there
 820    being a few stray bits in the PC which would mislead us, not as some sort
 821    of generic thing to handle alignment or segmentation (it's possible it
 822    should be in TARGET_READ_PC instead).  */
 823 #if !defined (ADDR_BITS_REMOVE)
 824 #define ADDR_BITS_REMOVE(addr) (addr)
 825 #endif /* No ADDR_BITS_REMOVE.  */
 826
 827 /* From valops.c */
 828
 829 extern CORE_ADDR push_bytes PARAMS ((CORE_ADDR, char *, int));
 830
 831 extern CORE_ADDR push_word PARAMS ((CORE_ADDR, unsigned LONGEST));
 832
 833 /* Some parts of gdb might be considered optional, in the sense that they
 834    are not essential for being able to build a working, usable debugger
 835    for a specific environment.  For example, the maintenance commands
 836    are there for the benefit of gdb maintainers.  As another example,
 837    some environments really don't need gdb's that are able to read N
 838    different object file formats.  In order to make it possible (but
 839    not necessarily recommended) to build "stripped down" versions of
 840    gdb, the following defines control selective compilation of those
 841    parts of gdb which can be safely left out when necessary.  Note that
 842    the default is to include everything. */
 843
 844 #ifndef MAINTENANCE_CMDS
 845 #define MAINTENANCE_CMDS 1
 846 #endif
 847
 848 #ifdef MAINTENANCE_CMDS
 849 extern int watchdog;
 850 #endif
 851
 852 #include "dis-asm.h"            /* Get defs for disassemble_info */
 853
 854 extern int dis_asm_read_memory PARAMS ((bfd_vma memaddr, bfd_byte *myaddr,
 855                                         int len, disassemble_info *info));
 856
 857 extern void dis_asm_memory_error PARAMS ((int status, bfd_vma memaddr,
 858                                           disassemble_info *info));
 859
 860 extern void dis_asm_print_address PARAMS ((bfd_vma addr,
 861                                            disassemble_info *info));
 862
 863 extern int (*tm_print_insn) PARAMS ((bfd_vma, disassemble_info*));
 864
 865 /* Hooks for alternate command interfaces.  */
 866
 867 #ifdef __STDC__
 868 struct target_waitstatus;
 869 struct cmd_list_element;
 870 #endif
 871
 872 extern void (*init_ui_hook) PARAMS ((void));
 873 extern void (*command_loop_hook) PARAMS ((void));
 874 extern void (*fputs_unfiltered_hook) PARAMS ((const char *linebuffer,
 875                                               FILE *stream));
 876 extern void (*print_frame_info_listing_hook) PARAMS ((struct symtab *s,
 877                                                       int line, int stopline,
 878                                                       int noerror));
 879 extern int (*query_hook) PARAMS (());
 880 extern void (*flush_hook) PARAMS ((FILE *stream));
 881 extern void (*create_breakpoint_hook) PARAMS ((struct breakpoint *b));
 882 extern void (*delete_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
 883 extern void (*modify_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
 884 extern void (*target_output_hook) PARAMS ((char *));
 885 extern void (*interactive_hook) PARAMS ((void));
 886 extern void (*registers_changed_hook) PARAMS ((void));
 887
 888 extern int (*target_wait_hook) PARAMS ((int pid,
 889                                         struct target_waitstatus *status));
 890
 891 extern void (*call_command_hook) PARAMS ((struct cmd_list_element *c,
 892                                           char *cmd, int from_tty));
 893
 894 extern NORETURN void (*error_hook) PARAMS (()) ATTR_NORETURN;
 895
 896
 897
 898 /* Inhibit window interface if non-zero. */
 899
 900 extern int use_windows;
 901
 902 /* Symbolic definitions of filename-related things.  */
 903 /* FIXME, this doesn't work very well if host and executable
 904    filesystems conventions are different.  */
 905
 906 #ifndef DIRNAME_SEPARATOR
 907 #define DIRNAME_SEPARATOR ':'
 908 #endif
 909
 910 #ifndef SLASH_P
 911 #if defined(__GO32__)||defined(WIN32)
 912 #define SLASH_P(X) ((X)=='\\')
 913 #else
 914 #define SLASH_P(X) ((X)=='/')
 915 #endif
 916 #endif
 917
 918 #ifndef SLASH_CHAR
 919 #if defined(__GO32__)||defined(WIN32)
 920 #define SLASH_CHAR '\\'
 921 #else
 922 #define SLASH_CHAR '/'
 923 #endif
 924 #endif
 925
 926 #ifndef SLASH_STRING
 927 #if defined(__GO32__)||defined(WIN32)
 928 #define SLASH_STRING "\\"
 929 #else
 930 #define SLASH_STRING "/"
 931 #endif
 932 #endif
 933
 934 #ifndef ROOTED_P
 935 #define ROOTED_P(X) (SLASH_P((X)[0]))
 936 #endif
 937
 938 #endif /* #ifndef DEFS_H */