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