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 /* For BFD64 and bfd_vma.  */
  32 #include "bfd.h"
  33
  34 /* An address in the program being debugged.  Host byte order.  Rather
  35    than duplicate all the logic in BFD which figures out what type
  36    this is (long, long long, etc.) and whether it needs to be 64
  37    bits (the host/target interactions are subtle), we just use
  38    bfd_vma.  */
  39
  40 typedef bfd_vma CORE_ADDR;
  41
  42 #define min(a, b) ((a) < (b) ? (a) : (b))
  43 #define max(a, b) ((a) > (b) ? (a) : (b))
  44
  45 /* Gdb does *lots* of string compares.  Use macros to speed them up by
  46    avoiding function calls if the first characters are not the same. */
  47
  48 #define STRCMP(a,b) (*(a) == *(b) ? strcmp ((a), (b)) : (int)*(a) - (int)*(b))
  49 #define STREQ(a,b) (*(a) == *(b) ? !strcmp ((a), (b)) : 0)
  50 #define STREQN(a,b,c) (*(a) == *(b) ? !strncmp ((a), (b), (c)) : 0)
  51
  52 /* The character GNU C++ uses to build identifiers that must be unique from
  53    the program's identifiers (such as $this and $$vptr).  */
  54 #define CPLUS_MARKER '$'        /* May be overridden to '.' for SysV */
  55
  56 #include <errno.h>              /* System call error return status */
  57
  58 extern int quit_flag;
  59 extern int immediate_quit;
  60 extern int sevenbit_strings;
  61
  62 extern void quit PARAMS ((void));
  63
  64 #define QUIT { if (quit_flag) quit (); }
  65
  66 /* Command classes are top-level categories into which commands are broken
  67    down for "help" purposes.
  68    Notes on classes: class_alias is for alias commands which are not
  69    abbreviations of the original command.  class-pseudo is for commands
  70    which are not really commands nor help topics ("stop").  */
  71
  72 enum command_class
  73 {
  74   /* Special args to help_list */
  75   all_classes = -2, all_commands = -1,
  76   /* Classes of commands */
  77   no_class = -1, class_run = 0, class_vars, class_stack,
  78   class_files, class_support, class_info, class_breakpoint,
  79   class_alias, class_obscure, class_user, class_maintenance,
  80   class_pseudo
  81 };
  82
  83 /* Languages represented in the symbol table and elsewhere.
  84    This should probably be in language.h, but since enum's can't
  85    be forward declared to satisfy opaque references before their
  86    actual definition, needs to be here. */
  87
  88 enum language
  89 {
  90    language_unknown,            /* Language not known */
  91    language_auto,               /* Placeholder for automatic setting */
  92    language_c,                  /* C */
  93    language_cplus,              /* C++ */
  94    language_chill,              /* Chill */
  95    language_m2,                 /* Modula-2 */
  96    language_asm                 /* Assembly language */
  97 };
  98
  99 /* the cleanup list records things that have to be undone
 100    if an error happens (descriptors to be closed, memory to be freed, etc.)
 101    Each link in the chain records a function to call and an
 102    argument to give it.
 103
 104    Use make_cleanup to add an element to the cleanup chain.
 105    Use do_cleanups to do all cleanup actions back to a given
 106    point in the chain.  Use discard_cleanups to remove cleanups
 107    from the chain back to a given point, not doing them.  */
 108
 109 struct cleanup
 110 {
 111   struct cleanup *next;
 112   void (*function) PARAMS ((PTR));
 113   PTR arg;
 114 };
 115
 116 /* From blockframe.c */
 117
 118 extern int inside_entry_func PARAMS ((CORE_ADDR));
 119
 120 extern int inside_entry_file PARAMS ((CORE_ADDR addr));
 121
 122 extern int inside_main_func PARAMS ((CORE_ADDR pc));
 123
 124 /* From ch-lang.c, for the moment. (FIXME) */
 125
 126 extern char *chill_demangle PARAMS ((const char *));
 127
 128 /* From libiberty.a */
 129
 130 extern char *cplus_demangle PARAMS ((const char *, int));
 131
 132 extern char *cplus_mangle_opname PARAMS ((char *, int));
 133
 134 /* From libmmalloc.a (memory mapped malloc library) */
 135
 136 extern PTR mmalloc_attach PARAMS ((int, PTR));
 137
 138 extern PTR mmalloc_detach PARAMS ((PTR));
 139
 140 extern PTR mmalloc PARAMS ((PTR, long));
 141
 142 extern PTR mrealloc PARAMS ((PTR, PTR, long));
 143
 144 extern void mfree PARAMS ((PTR, PTR));
 145
 146 extern int mmalloc_setkey PARAMS ((PTR, int, PTR));
 147
 148 extern PTR mmalloc_getkey PARAMS ((PTR, int));
 149
 150 /* From utils.c */
 151
 152 extern int strcmp_iw PARAMS ((const char *, const char *));
 153
 154 extern char *safe_strerror PARAMS ((int));
 155
 156 extern char *safe_strsignal PARAMS ((int));
 157
 158 extern void init_malloc PARAMS ((void *));
 159
 160 extern void request_quit PARAMS ((int));
 161
 162 extern void do_cleanups PARAMS ((struct cleanup *));
 163
 164 extern void discard_cleanups PARAMS ((struct cleanup *));
 165
 166 /* The bare make_cleanup function is one of those rare beasts that
 167    takes almost any type of function as the first arg and anything that
 168    will fit in a "void *" as the second arg.
 169
 170    Should be, once all calls and called-functions are cleaned up:
 171 extern struct cleanup *
 172 make_cleanup PARAMS ((void (*function) (void *), void *));
 173
 174    Until then, lint and/or various type-checking compiler options will
 175    complain about make_cleanup calls.  It'd be wrong to just cast things,
 176    since the type actually passed when the function is called would be
 177    wrong.  */
 178
 179 extern struct cleanup *make_cleanup ();
 180
 181 extern struct cleanup *save_cleanups PARAMS ((void));
 182
 183 extern void restore_cleanups PARAMS ((struct cleanup *));
 184
 185 extern void free_current_contents PARAMS ((char **));
 186
 187 extern void null_cleanup PARAMS ((char **));
 188
 189 extern int myread PARAMS ((int, char *, int));
 190
 191 extern int query ();
 192 \f
 193 /* Annotation stuff.  */
 194
 195 extern int annotation_level; /* in stack.c */
 196 \f
 197 extern void begin_line PARAMS ((void));
 198
 199 extern void wrap_here PARAMS ((char *));
 200
 201 extern void reinitialize_more_filter PARAMS ((void));
 202
 203 typedef FILE GDB_FILE;
 204 #define gdb_stdout stdout
 205 #define gdb_stderr stderr
 206
 207 extern int print_insn PARAMS ((CORE_ADDR, GDB_FILE *));
 208
 209 extern void gdb_flush PARAMS ((GDB_FILE *));
 210
 211 extern GDB_FILE *gdb_fopen PARAMS ((char * name, char * mode));
 212
 213 extern void fputs_filtered PARAMS ((const char *, GDB_FILE *));
 214
 215 extern void fputs_unfiltered PARAMS ((const char *, GDB_FILE *));
 216
 217 extern void fputc_unfiltered PARAMS ((int, GDB_FILE *));
 218
 219 extern void putc_unfiltered PARAMS ((int));
 220
 221 #define putchar_unfiltered(C)  putc_unfiltered(C)
 222
 223 extern void puts_filtered PARAMS ((char *));
 224
 225 extern void puts_unfiltered PARAMS ((char *));
 226
 227 extern void vprintf_filtered ();
 228
 229 extern void vfprintf_filtered ();
 230
 231 extern void fprintf_filtered ();
 232
 233 extern void fprintfi_filtered ();
 234
 235 extern void printf_filtered ();
 236
 237 extern void printfi_filtered ();
 238
 239 extern void vprintf_unfiltered ();
 240
 241 extern void vfprintf_unfiltered ();
 242
 243 extern void fprintf_unfiltered ();
 244
 245 extern void printf_unfiltered ();
 246
 247 extern void print_spaces PARAMS ((int, GDB_FILE *));
 248
 249 extern void print_spaces_filtered PARAMS ((int, GDB_FILE *));
 250
 251 extern char *n_spaces PARAMS ((int));
 252
 253 extern void gdb_printchar PARAMS ((int, GDB_FILE *, int));
 254
 255 extern void gdb_print_address PARAMS ((void *, GDB_FILE *));
 256
 257 extern void fprintf_symbol_filtered PARAMS ((GDB_FILE *, char *,
 258                                              enum language, int));
 259
 260 extern void perror_with_name PARAMS ((char *));
 261
 262 extern void print_sys_errmsg PARAMS ((char *, int));
 263
 264 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 265    "const char *" in unistd.h, so we can't declare the argument
 266    as "char *".  */
 267
 268 extern char *re_comp PARAMS ((const char *));
 269
 270 /* From symfile.c */
 271
 272 extern void symbol_file_command PARAMS ((char *, int));
 273
 274 /* From main.c */
 275
 276 extern char *skip_quoted PARAMS ((char *));
 277
 278 extern char *gdb_readline PARAMS ((char *));
 279
 280 extern char *command_line_input PARAMS ((char *, int, char *));
 281
 282 extern void print_prompt PARAMS ((void));
 283
 284 extern int input_from_terminal_p PARAMS ((void));
 285
 286 /* From printcmd.c */
 287
 288 extern void set_next_address PARAMS ((CORE_ADDR));
 289
 290 extern void print_address_symbolic PARAMS ((CORE_ADDR, GDB_FILE *, int,
 291                                             char *));
 292
 293 extern void print_address_numeric PARAMS ((CORE_ADDR, int, GDB_FILE *));
 294
 295 extern void print_address PARAMS ((CORE_ADDR, GDB_FILE *));
 296
 297 /* From source.c */
 298
 299 extern int openp PARAMS ((char *, int, char *, int, int, char **));
 300
 301 extern void mod_path PARAMS ((char *, char **));
 302
 303 extern void directory_command PARAMS ((char *, int));
 304
 305 extern void init_source_path PARAMS ((void));
 306
 307 /* From findvar.c */
 308
 309 extern int read_relative_register_raw_bytes PARAMS ((int, char *));
 310
 311 /* From readline (but not in any readline .h files).  */
 312
 313 extern char *tilde_expand PARAMS ((char *));
 314
 315 /* Structure for saved commands lines
 316    (for breakpoints, defined commands, etc).  */
 317
 318 struct command_line
 319 {
 320   struct command_line *next;
 321   char *line;
 322 };
 323
 324 extern struct command_line *read_command_lines PARAMS ((void));
 325
 326 extern void free_command_lines PARAMS ((struct command_line **));
 327
 328 /* String containing the current directory (what getwd would return).  */
 329
 330 extern char *current_directory;
 331
 332 /* Default radixes for input and output.  Only some values supported.  */
 333 extern unsigned input_radix;
 334 extern unsigned output_radix;
 335
 336 /* Possibilities for prettyprint parameters to routines which print
 337    things.  Like enum language, this should be in value.h, but needs
 338    to be here for the same reason.  FIXME:  If we can eliminate this
 339    as an arg to LA_VAL_PRINT, then we can probably move it back to
 340    value.h. */
 341
 342 enum val_prettyprint
 343 {
 344   Val_no_prettyprint = 0,
 345   Val_prettyprint,
 346   /* Use the default setting which the user has specified.  */
 347   Val_pretty_default
 348 };
 349
 350 \f
 351 /* Host machine definition.  This will be a symlink to one of the
 352    xm-*.h files, built by the `configure' script.  */
 353
 354 #include "xm.h"
 355
 356 /* Native machine support.  This will be a symlink to one of the
 357    nm-*.h files, built by the `configure' script.  */
 358
 359 #include "nm.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 /* The ability to declare that a function never returns is useful, but
 396    not really required to compile GDB successfully, so the NORETURN and
 397    ATTR_NORETURN macros normally expand into nothing.  */
 398
 399 /* If compiling with older versions of GCC, a function may be declared
 400    "volatile" to indicate that it does not return.  */
 401
 402 #ifndef NORETURN
 403 # if defined(__GNUC__) \
 404      && (__GNUC__ == 1 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5))
 405 #  define NORETURN volatile
 406 # else
 407 #  define NORETURN /* nothing */
 408 # endif
 409 #endif
 410
 411 /* GCC 2.5 and later versions define a function attribute "noreturn",
 412    which is the preferred way to declare that a function never returns.  */
 413
 414 #ifndef ATTR_NORETURN
 415 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 5
 416 #  define ATTR_NORETURN __attribute__ ((noreturn))
 417 # else
 418 #  define ATTR_NORETURN /* nothing */
 419 # endif
 420 #endif
 421
 422 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).  */
 423
 424 #if !defined (UINT_MAX)
 425 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 426 #endif
 427
 428 #if !defined (INT_MAX)
 429 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 430 #endif
 431
 432 #if !defined (INT_MIN)
 433 #define INT_MIN (-INT_MAX - 1)                  /* 0x80000000 for 32-bits */
 434 #endif
 435
 436 #if !defined (ULONG_MAX)
 437 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 438 #endif
 439
 440 #if !defined (LONG_MAX)
 441 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 442 #endif
 443
 444 #ifdef BFD64
 445
 446 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
 447
 448 #define LONGEST BFD_HOST_64_BIT
 449
 450 #else /* No BFD64 */
 451
 452 /* If all compilers for this host support "long long" and we want to
 453    use it for LONGEST (the performance hit is about 10% on a testsuite
 454    run based on one DECstation test), then the xm.h file can define
 455    CC_HAS_LONG_LONG.
 456
 457    Using GCC 1.39 on BSDI with long long causes about 700 new
 458    testsuite failures.  Using long long for LONGEST on the DECstation
 459    causes 3 new FAILs in the testsuite and many heuristic fencepost
 460    warnings.  These are not investigated, but a first guess would be
 461    that the BSDI problems are GCC bugs in long long support and the
 462    latter are GDB bugs.  */
 463
 464 #ifndef CC_HAS_LONG_LONG
 465 #  if defined (__GNUC__) && defined (FORCE_LONG_LONG)
 466 #    define CC_HAS_LONG_LONG 1
 467 #  endif
 468 #endif
 469
 470 /* LONGEST should not be a typedef, because "unsigned LONGEST" needs to work.
 471    CC_HAS_LONG_LONG is defined if the host compiler supports "long long"
 472    variables and we wish to make use of that support.  */
 473
 474 #ifndef LONGEST
 475 #  ifdef CC_HAS_LONG_LONG
 476 #    define LONGEST long long
 477 #  else
 478 #    define LONGEST long
 479 #  endif
 480 #endif
 481
 482 #endif /* No BFD64 */
 483
 484 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 485    arguments to a function, number in a value history, register number, etc.)
 486    where the value must not be larger than can fit in an int.  */
 487
 488 extern int longest_to_int PARAMS ((LONGEST));
 489
 490 /* Assorted functions we can declare, now that const and volatile are
 491    defined.  */
 492
 493 extern char *savestring PARAMS ((const char *, int));
 494
 495 extern char *msavestring PARAMS ((void *, const char *, int));
 496
 497 extern char *strsave PARAMS ((const char *));
 498
 499 extern char *mstrsave PARAMS ((void *, const char *));
 500
 501 extern char *concat PARAMS ((char *, ...));
 502
 503 extern PTR xmalloc PARAMS ((long));
 504
 505 extern PTR xrealloc PARAMS ((PTR, long));
 506
 507 extern PTR xmmalloc PARAMS ((PTR, long));
 508
 509 extern PTR xmrealloc PARAMS ((PTR, PTR, long));
 510
 511 extern PTR mmalloc PARAMS ((PTR, long));
 512
 513 extern PTR mrealloc PARAMS ((PTR, PTR, long));
 514
 515 extern void mfree PARAMS ((PTR, PTR));
 516
 517 extern int mmcheck PARAMS ((PTR, void (*) (void)));
 518
 519 extern int mmtrace PARAMS ((void));
 520
 521 extern int parse_escape PARAMS ((char **));
 522
 523 extern const char * const reg_names[];
 524
 525 /* Message to be printed before the error message, when an error occurs.  */
 526
 527 extern char *error_pre_print;
 528
 529 /* Message to be printed before the warning message, when a warning occurs.  */
 530
 531 extern char *warning_pre_print;
 532
 533 extern NORETURN void error () ATTR_NORETURN;
 534
 535 extern void error_begin PARAMS ((void));
 536
 537 extern NORETURN void fatal () ATTR_NORETURN;
 538
 539 extern NORETURN void exit PARAMS ((int)) ATTR_NORETURN; /* 4.10.4.3 */
 540
 541 extern NORETURN void nomem PARAMS ((long)) ATTR_NORETURN;
 542
 543 /* Reasons for calling return_to_top_level.  */
 544 enum return_reason {
 545   /* User interrupt.  */
 546   RETURN_QUIT,
 547
 548   /* Any other error.  */
 549   RETURN_ERROR
 550 };
 551
 552 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 553 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 554 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 555 typedef int return_mask;
 556
 557 extern NORETURN void
 558 return_to_top_level PARAMS ((enum return_reason)) ATTR_NORETURN;
 559
 560 extern int
 561 catch_errors PARAMS ((int (*) (char *), void *, char *, return_mask));
 562
 563 extern void warning_setup PARAMS ((void));
 564
 565 extern void warning ();
 566
 567 /* Global functions from other, non-gdb GNU thingies (libiberty for
 568    instance) */
 569
 570 extern char *basename PARAMS ((char *));
 571
 572 extern char *getenv PARAMS ((const char *));
 573
 574 extern char **buildargv PARAMS ((char *));
 575
 576 extern void freeargv PARAMS ((char **));
 577
 578 extern char *strerrno PARAMS ((int));
 579
 580 extern char *strsigno PARAMS ((int));
 581
 582 extern int errno_max PARAMS ((void));
 583
 584 extern int signo_max PARAMS ((void));
 585
 586 extern int strtoerrno PARAMS ((char *));
 587
 588 extern int strtosigno PARAMS ((char *));
 589
 590 extern char *strsignal PARAMS ((int));
 591
 592 /* From other system libraries */
 593
 594 #ifndef PSIGNAL_IN_SIGNAL_H
 595 extern void psignal PARAMS ((unsigned, const char *));
 596 #endif
 597
 598 /* For now, we can't include <stdlib.h> because it conflicts with
 599    "../include/getopt.h".  (FIXME)
 600
 601    However, if a function is defined in the ANSI C standard and a prototype
 602    for that function is defined and visible in any header file in an ANSI
 603    conforming environment, then that prototype must match the definition in
 604    the ANSI standard.  So we can just duplicate them here without conflict,
 605    since they must be the same in all conforming ANSI environments.  If
 606    these cause problems, then the environment is not ANSI conformant. */
 607
 608 #ifdef __STDC__
 609 #include <stddef.h>
 610 #endif
 611
 612 extern int fclose PARAMS ((GDB_FILE *stream));          /* 4.9.5.1 */
 613
 614 extern void perror PARAMS ((const char *));             /* 4.9.10.4 */
 615
 616 extern double atof PARAMS ((const char *nptr));         /* 4.10.1.1 */
 617
 618 extern int atoi PARAMS ((const char *));                /* 4.10.1.2 */
 619
 620 #ifndef MALLOC_INCOMPATIBLE
 621
 622 extern PTR malloc PARAMS ((size_t size));               /* 4.10.3.3 */
 623
 624 extern PTR realloc PARAMS ((void *ptr, size_t size));   /* 4.10.3.4 */
 625
 626 extern void free PARAMS ((void *));                     /* 4.10.3.2 */
 627
 628 #endif  /* MALLOC_INCOMPATIBLE */
 629
 630 extern void
 631 qsort PARAMS ((void *base, size_t nmemb,                /* 4.10.5.2 */
 632                size_t size,
 633                int (*compar)(const void *, const void *)));
 634
 635 #ifndef MEM_FNS_DECLARED        /* Some non-ANSI use void *, not char *.  */
 636 extern PTR memcpy PARAMS ((void *, const void *, size_t));  /* 4.11.2.1 */
 637
 638 extern int memcmp PARAMS ((const void *, const void *, size_t)); /* 4.11.4.1 */
 639 #endif
 640
 641 extern char *strchr PARAMS ((const char *, int));       /* 4.11.5.2 */
 642
 643 extern char *strrchr PARAMS ((const char *, int));      /* 4.11.5.5 */
 644
 645 extern char *strstr PARAMS ((const char *, const char *)); /* 4.11.5.7 */
 646
 647 extern char *strtok PARAMS ((char *, const char *));    /* 4.11.5.8 */
 648
 649 #ifndef MEM_FNS_DECLARED        /* Some non-ANSI use void *, not char *.  */
 650 extern PTR memset PARAMS ((void *, int, size_t));       /* 4.11.6.1 */
 651 #endif
 652
 653 extern char *strerror PARAMS ((int));                   /* 4.11.6.2 */
 654
 655 /* Various possibilities for alloca.  */
 656 #ifndef alloca
 657 # ifdef __GNUC__
 658 #  define alloca __builtin_alloca
 659 # else /* Not GNU C */
 660 #  ifdef sparc
 661 #   include <alloca.h>          /* NOTE:  Doesn't declare alloca() */
 662 #  endif
 663
 664 /* We need to be careful not to declare this in a way which conflicts with
 665    bison.  Bison never declares it as char *, but under various circumstances
 666    (like __hpux) we need to use void *.  */
 667 #  if defined (__STDC__) || defined (__hpux)
 668    extern void *alloca ();
 669 #  else /* Don't use void *.  */
 670    extern char *alloca ();
 671 #  endif /* Don't use void *.  */
 672 # endif /* Not GNU C */
 673 #endif /* alloca not defined */
 674
 675 /* TARGET_BYTE_ORDER and HOST_BYTE_ORDER must be defined to one of these.  */
 676
 677 #if !defined (BIG_ENDIAN)
 678 #define BIG_ENDIAN 4321
 679 #endif
 680
 681 #if !defined (LITTLE_ENDIAN)
 682 #define LITTLE_ENDIAN 1234
 683 #endif
 684
 685 /* Target-system-dependent parameters for GDB. */
 686
 687 /* Target machine definition.  This will be a symlink to one of the
 688    tm-*.h files, built by the `configure' script.  */
 689
 690 #include "tm.h"
 691
 692 /* Number of bits in a char or unsigned char for the target machine.
 693    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 694 #if !defined (TARGET_CHAR_BIT)
 695 #define TARGET_CHAR_BIT 8
 696 #endif
 697
 698 /* Number of bits in a short or unsigned short for the target machine. */
 699 #if !defined (TARGET_SHORT_BIT)
 700 #define TARGET_SHORT_BIT (2 * TARGET_CHAR_BIT)
 701 #endif
 702
 703 /* Number of bits in an int or unsigned int for the target machine. */
 704 #if !defined (TARGET_INT_BIT)
 705 #define TARGET_INT_BIT (4 * TARGET_CHAR_BIT)
 706 #endif
 707
 708 /* Number of bits in a long or unsigned long for the target machine. */
 709 #if !defined (TARGET_LONG_BIT)
 710 #define TARGET_LONG_BIT (4 * TARGET_CHAR_BIT)
 711 #endif
 712
 713 /* Number of bits in a long long or unsigned long long for the target machine. */
 714 #if !defined (TARGET_LONG_LONG_BIT)
 715 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 716 #endif
 717
 718 /* Number of bits in a float for the target machine. */
 719 #if !defined (TARGET_FLOAT_BIT)
 720 #define TARGET_FLOAT_BIT (4 * TARGET_CHAR_BIT)
 721 #endif
 722
 723 /* Number of bits in a double for the target machine. */
 724 #if !defined (TARGET_DOUBLE_BIT)
 725 #define TARGET_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 726 #endif
 727
 728 /* Number of bits in a long double for the target machine.  */
 729 #if !defined (TARGET_LONG_DOUBLE_BIT)
 730 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 731 #endif
 732
 733 /* Number of bits in a "complex" for the target machine. */
 734 #if !defined (TARGET_COMPLEX_BIT)
 735 #define TARGET_COMPLEX_BIT (2 * TARGET_FLOAT_BIT)
 736 #endif
 737
 738 /* Number of bits in a "double complex" for the target machine. */
 739 #if !defined (TARGET_DOUBLE_COMPLEX_BIT)
 740 #define TARGET_DOUBLE_COMPLEX_BIT (2 * TARGET_DOUBLE_BIT)
 741 #endif
 742
 743 /* Number of bits in a pointer for the target machine */
 744 #if !defined (TARGET_PTR_BIT)
 745 #define TARGET_PTR_BIT TARGET_INT_BIT
 746 #endif
 747
 748 /* If we picked up a copy of CHAR_BIT from a configuration file
 749    (which may get it by including <limits.h>) then use it to set
 750    the number of bits in a host char.  If not, use the same size
 751    as the target. */
 752
 753 #if defined (CHAR_BIT)
 754 #define HOST_CHAR_BIT CHAR_BIT
 755 #else
 756 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 757 #endif
 758
 759 /* The bit byte-order has to do just with numbering of bits in
 760    debugging symbols and such.  Conceptually, it's quite separate
 761    from byte/word byte order.  */
 762
 763 #if !defined (BITS_BIG_ENDIAN)
 764 #if TARGET_BYTE_ORDER == BIG_ENDIAN
 765 #define BITS_BIG_ENDIAN 1
 766 #endif /* Big endian.  */
 767
 768 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
 769 #define BITS_BIG_ENDIAN 0
 770 #endif /* Little endian.  */
 771 #endif /* BITS_BIG_ENDIAN not defined.  */
 772
 773 /* In findvar.c.  */
 774
 775 extern LONGEST extract_signed_integer PARAMS ((void *, int));
 776
 777 extern unsigned LONGEST extract_unsigned_integer PARAMS ((void *, int));
 778
 779 extern CORE_ADDR extract_address PARAMS ((void *, int));
 780
 781 extern void store_signed_integer PARAMS ((void *, int, LONGEST));
 782
 783 extern void store_unsigned_integer PARAMS ((void *, int, unsigned LONGEST));
 784
 785 extern void store_address PARAMS ((void *, int, CORE_ADDR));
 786
 787 extern double extract_floating PARAMS ((void *, int));
 788
 789 extern void store_floating PARAMS ((void *, int, double));
 790 \f
 791 /* On some machines there are bits in addresses which are not really
 792    part of the address, but are used by the kernel, the hardware, etc.
 793    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
 794    so we get a "real" address such as one would find in a symbol
 795    table.  This is used only for addresses of instructions, and even then
 796    I'm not sure it's used in all contexts.  It exists to deal with there
 797    being a few stray bits in the PC which would mislead us, not as some sort
 798    of generic thing to handle alignment or segmentation (it's possible it
 799    should be in TARGET_READ_PC instead).  */
 800 #if !defined (ADDR_BITS_REMOVE)
 801 #define ADDR_BITS_REMOVE(addr) (addr)
 802 #endif /* No ADDR_BITS_REMOVE.  */
 803
 804 /* From valops.c */
 805
 806 extern CORE_ADDR push_bytes PARAMS ((CORE_ADDR, char *, int));
 807
 808 extern CORE_ADDR push_word PARAMS ((CORE_ADDR, unsigned LONGEST));
 809
 810 /* Some parts of gdb might be considered optional, in the sense that they
 811    are not essential for being able to build a working, usable debugger
 812    for a specific environment.  For example, the maintenance commands
 813    are there for the benefit of gdb maintainers.  As another example,
 814    some environments really don't need gdb's that are able to read N
 815    different object file formats.  In order to make it possible (but
 816    not necessarily recommended) to build "stripped down" versions of
 817    gdb, the following defines control selective compilation of those
 818    parts of gdb which can be safely left out when necessary.  Note that
 819    the default is to include everything. */
 820
 821 #ifndef MAINTENANCE_CMDS
 822 #define MAINTENANCE_CMDS 1
 823 #endif
 824
 825 /* Hooks for alternate command interfaces.  */
 826
 827 #ifdef __STDC__
 828 struct symtab;
 829 struct breakpoint;
 830 #endif
 831
 832 extern void (*init_ui_hook) PARAMS ((void));
 833 extern void (*command_loop_hook) PARAMS ((void));
 834 extern void (*fputs_unfiltered_hook) PARAMS ((const char *linebuffer));
 835 extern void (*print_frame_info_listing_hook) PARAMS ((struct symtab *s, int line,
 836                                                int stopline, int noerror));
 837 extern int (*query_hook) PARAMS (());
 838 extern void (*flush_hook) PARAMS ((FILE *stream));
 839 extern void (*create_breakpoint_hook) PARAMS ((struct breakpoint *b));
 840 extern void (*delete_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
 841 extern void (*enable_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
 842 extern void (*disable_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
 843
 844 /* Inhibit window interface if non-zero. */
 845
 846 extern int no_windows;
 847
 848 #endif /* !defined (DEFS_H) */