gdb/defs.h

   1 /* Basic, host-specific, and target-specific definitions for GDB.
   2    Copyright (C) 1986, 1989, 1991, 1992, 1993, 1994
   3    Free Software Foundation, Inc.
   4
   5 This file is part of GDB.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 #if !defined (DEFS_H)
  22 #define DEFS_H 1
  23
  24 #include <stdio.h>
  25
  26 /* First include ansidecl.h so we can use the various macro definitions
  27    here and in all subsequent file inclusions.  */
  28
  29 #include "ansidecl.h"
  30
  31 #include "libiberty.h"
  32
  33 /* libiberty.h can't declare this one, but evidently we can.  */
  34 extern char *strsignal PARAMS ((int));
  35
  36 /* For BFD64 and bfd_vma.  */
  37 #include "bfd.h"
  38
  39 /* An address in the program being debugged.  Host byte order.  Rather
  40    than duplicate all the logic in BFD which figures out what type
  41    this is (long, long long, etc.) and whether it needs to be 64
  42    bits (the host/target interactions are subtle), we just use
  43    bfd_vma.  */
  44
  45 typedef bfd_vma CORE_ADDR;
  46
  47 #define min(a, b) ((a) < (b) ? (a) : (b))
  48 #define max(a, b) ((a) > (b) ? (a) : (b))
  49
  50 /* Gdb does *lots* of string compares.  Use macros to speed them up by
  51    avoiding function calls if the first characters are not the same. */
  52
  53 #define STRCMP(a,b) (*(a) == *(b) ? strcmp ((a), (b)) : (int)*(a) - (int)*(b))
  54 #define STREQ(a,b) (*(a) == *(b) ? !strcmp ((a), (b)) : 0)
  55 #define STREQN(a,b,c) (*(a) == *(b) ? !strncmp ((a), (b), (c)) : 0)
  56
  57 /* The character GNU C++ uses to build identifiers that must be unique from
  58    the program's identifiers (such as $this and $$vptr).  */
  59 #define CPLUS_MARKER '$'        /* May be overridden to '.' for SysV */
  60
  61 #include <errno.h>              /* System call error return status */
  62
  63 extern int quit_flag;
  64 extern int immediate_quit;
  65 extern int sevenbit_strings;
  66
  67 extern void quit PARAMS ((void));
  68
  69 #define QUIT { if (quit_flag) quit (); if (interactive_hook) interactive_hook (); }
  70
  71 /* Command classes are top-level categories into which commands are broken
  72    down for "help" purposes.
  73    Notes on classes: class_alias is for alias commands which are not
  74    abbreviations of the original command.  class-pseudo is for commands
  75    which are not really commands nor help topics ("stop").  */
  76
  77 enum command_class
  78 {
  79   /* Special args to help_list */
  80   all_classes = -2, all_commands = -1,
  81   /* Classes of commands */
  82   no_class = -1, class_run = 0, class_vars, class_stack,
  83   class_files, class_support, class_info, class_breakpoint,
  84   class_alias, class_obscure, class_user, class_maintenance,
  85   class_pseudo
  86 };
  87
  88 /* Languages represented in the symbol table and elsewhere.
  89    This should probably be in language.h, but since enum's can't
  90    be forward declared to satisfy opaque references before their
  91    actual definition, needs to be here. */
  92
  93 enum language
  94 {
  95    language_unknown,            /* Language not known */
  96    language_auto,               /* Placeholder for automatic setting */
  97    language_c,                  /* C */
  98    language_cplus,              /* C++ */
  99    language_chill,              /* Chill */
 100    language_fortran,            /* Fortran */
 101    language_m2,                 /* Modula-2 */
 102    language_asm                 /* Assembly language */
 103 };
 104
 105 /* the cleanup list records things that have to be undone
 106    if an error happens (descriptors to be closed, memory to be freed, etc.)
 107    Each link in the chain records a function to call and an
 108    argument to give it.
 109
 110    Use make_cleanup to add an element to the cleanup chain.
 111    Use do_cleanups to do all cleanup actions back to a given
 112    point in the chain.  Use discard_cleanups to remove cleanups
 113    from the chain back to a given point, not doing them.  */
 114
 115 struct cleanup
 116 {
 117   struct cleanup *next;
 118   void (*function) PARAMS ((PTR));
 119   PTR arg;
 120 };
 121
 122 /* Needed for various prototypes */
 123
 124 #ifdef __STDC__
 125 struct symtab;
 126 struct breakpoint;
 127 #endif
 128
 129 /* From blockframe.c */
 130
 131 extern int inside_entry_func PARAMS ((CORE_ADDR));
 132
 133 extern int inside_entry_file PARAMS ((CORE_ADDR addr));
 134
 135 extern int inside_main_func PARAMS ((CORE_ADDR pc));
 136
 137 /* From ch-lang.c, for the moment. (FIXME) */
 138
 139 extern char *chill_demangle PARAMS ((const char *));
 140
 141 /* From libiberty.a */
 142
 143 extern char *cplus_demangle PARAMS ((const char *, int));
 144
 145 extern char *cplus_mangle_opname PARAMS ((char *, int));
 146
 147 /* From libmmalloc.a (memory mapped malloc library) */
 148
 149 extern PTR mmalloc_attach PARAMS ((int, PTR));
 150
 151 extern PTR mmalloc_detach PARAMS ((PTR));
 152
 153 extern PTR mmalloc PARAMS ((PTR, long));
 154
 155 extern PTR mrealloc PARAMS ((PTR, PTR, long));
 156
 157 extern void mfree PARAMS ((PTR, PTR));
 158
 159 extern int mmalloc_setkey PARAMS ((PTR, int, PTR));
 160
 161 extern PTR mmalloc_getkey PARAMS ((PTR, int));
 162
 163 /* From utils.c */
 164
 165 extern int strcmp_iw PARAMS ((const char *, const char *));
 166
 167 extern char *safe_strerror PARAMS ((int));
 168
 169 extern char *safe_strsignal PARAMS ((int));
 170
 171 extern void init_malloc PARAMS ((void *));
 172
 173 extern void request_quit PARAMS ((int));
 174
 175 extern void do_cleanups PARAMS ((struct cleanup *));
 176
 177 extern void discard_cleanups PARAMS ((struct cleanup *));
 178
 179 /* The bare make_cleanup function is one of those rare beasts that
 180    takes almost any type of function as the first arg and anything that
 181    will fit in a "void *" as the second arg.
 182
 183    Should be, once all calls and called-functions are cleaned up:
 184 extern struct cleanup *
 185 make_cleanup PARAMS ((void (*function) (void *), void *));
 186
 187    Until then, lint and/or various type-checking compiler options will
 188    complain about make_cleanup calls.  It'd be wrong to just cast things,
 189    since the type actually passed when the function is called would be
 190    wrong.  */
 191
 192 extern struct cleanup *make_cleanup ();
 193
 194 extern struct cleanup *save_cleanups PARAMS ((void));
 195
 196 extern void restore_cleanups PARAMS ((struct cleanup *));
 197
 198 extern void free_current_contents PARAMS ((char **));
 199
 200 extern void null_cleanup PARAMS ((char **));
 201
 202 extern int myread PARAMS ((int, char *, int));
 203
 204 extern int query ();
 205 \f
 206 /* Annotation stuff.  */
 207
 208 extern int annotation_level; /* in stack.c */
 209 \f
 210 extern void begin_line PARAMS ((void));
 211
 212 extern void wrap_here PARAMS ((char *));
 213
 214 extern void reinitialize_more_filter PARAMS ((void));
 215
 216 typedef FILE GDB_FILE;
 217 #define gdb_stdout stdout
 218 #define gdb_stderr stderr
 219
 220 extern int print_insn PARAMS ((CORE_ADDR, GDB_FILE *));
 221
 222 extern void gdb_flush PARAMS ((GDB_FILE *));
 223
 224 extern GDB_FILE *gdb_fopen PARAMS ((char * name, char * mode));
 225
 226 extern void fputs_filtered PARAMS ((const char *, GDB_FILE *));
 227
 228 extern void fputs_unfiltered PARAMS ((const char *, GDB_FILE *));
 229
 230 extern void fputc_unfiltered PARAMS ((int, GDB_FILE *));
 231
 232 extern void putc_unfiltered PARAMS ((int));
 233
 234 #define putchar_unfiltered(C)  putc_unfiltered(C)
 235
 236 extern void puts_filtered PARAMS ((char *));
 237
 238 extern void puts_unfiltered PARAMS ((char *));
 239
 240 extern void vprintf_filtered ();
 241
 242 extern void vfprintf_filtered ();
 243
 244 extern void fprintf_filtered ();
 245
 246 extern void fprintfi_filtered ();
 247
 248 extern void printf_filtered ();
 249
 250 extern void printfi_filtered ();
 251
 252 extern void vprintf_unfiltered ();
 253
 254 extern void vfprintf_unfiltered ();
 255
 256 extern void fprintf_unfiltered ();
 257
 258 extern void printf_unfiltered ();
 259
 260 extern void print_spaces PARAMS ((int, GDB_FILE *));
 261
 262 extern void print_spaces_filtered PARAMS ((int, GDB_FILE *));
 263
 264 extern char *n_spaces PARAMS ((int));
 265
 266 extern void gdb_printchar PARAMS ((int, GDB_FILE *, int));
 267
 268 extern void gdb_print_address PARAMS ((void *, GDB_FILE *));
 269
 270 extern void fprintf_symbol_filtered PARAMS ((GDB_FILE *, char *,
 271                                              enum language, int));
 272
 273 extern void perror_with_name PARAMS ((char *));
 274
 275 extern void print_sys_errmsg PARAMS ((char *, int));
 276
 277 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 278    "const char *" in unistd.h, so we can't declare the argument
 279    as "char *".  */
 280
 281 extern char *re_comp PARAMS ((const char *));
 282
 283 /* From symfile.c */
 284
 285 extern void symbol_file_command PARAMS ((char *, int));
 286
 287 /* From main.c */
 288
 289 extern char *skip_quoted PARAMS ((char *));
 290
 291 extern char *gdb_readline PARAMS ((char *));
 292
 293 extern char *command_line_input PARAMS ((char *, int, char *));
 294
 295 extern void print_prompt PARAMS ((void));
 296
 297 extern int input_from_terminal_p PARAMS ((void));
 298
 299 /* From printcmd.c */
 300
 301 extern void set_next_address PARAMS ((CORE_ADDR));
 302
 303 extern void print_address_symbolic PARAMS ((CORE_ADDR, GDB_FILE *, int,
 304                                             char *));
 305
 306 extern void print_address_numeric PARAMS ((CORE_ADDR, int, GDB_FILE *));
 307
 308 extern void print_address PARAMS ((CORE_ADDR, GDB_FILE *));
 309
 310 /* From source.c */
 311
 312 extern int openp PARAMS ((char *, int, char *, int, int, char **));
 313
 314 extern void mod_path PARAMS ((char *, char **));
 315
 316 extern void directory_command PARAMS ((char *, int));
 317
 318 extern void init_source_path PARAMS ((void));
 319
 320 extern char *symtab_to_filename PARAMS ((struct symtab *));
 321
 322 /* From findvar.c */
 323
 324 extern int read_relative_register_raw_bytes PARAMS ((int, char *));
 325
 326 /* From readline (but not in any readline .h files).  */
 327
 328 extern char *tilde_expand PARAMS ((char *));
 329
 330 /* Structure for saved commands lines
 331    (for breakpoints, defined commands, etc).  */
 332
 333 struct command_line
 334 {
 335   struct command_line *next;
 336   char *line;
 337 };
 338
 339 extern struct command_line *read_command_lines PARAMS ((void));
 340
 341 extern void free_command_lines PARAMS ((struct command_line **));
 342
 343 /* String containing the current directory (what getwd would return).  */
 344
 345 extern char *current_directory;
 346
 347 /* Default radixes for input and output.  Only some values supported.  */
 348 extern unsigned input_radix;
 349 extern unsigned output_radix;
 350
 351 /* Possibilities for prettyprint parameters to routines which print
 352    things.  Like enum language, this should be in value.h, but needs
 353    to be here for the same reason.  FIXME:  If we can eliminate this
 354    as an arg to LA_VAL_PRINT, then we can probably move it back to
 355    value.h. */
 356
 357 enum val_prettyprint
 358 {
 359   Val_no_prettyprint = 0,
 360   Val_prettyprint,
 361   /* Use the default setting which the user has specified.  */
 362   Val_pretty_default
 363 };
 364
 365 \f
 366 /* Host machine definition.  This will be a symlink to one of the
 367    xm-*.h files, built by the `configure' script.  */
 368
 369 #include "xm.h"
 370
 371 /* Native machine support.  This will be a symlink to one of the
 372    nm-*.h files, built by the `configure' script.  */
 373
 374 #include "nm.h"
 375
 376 /* If the xm.h file did not define the mode string used to open the
 377    files, assume that binary files are opened the same way as text
 378    files */
 379 #ifndef FOPEN_RB
 380 #include "fopen-same.h"
 381 #endif
 382
 383 /*
 384  * Allow things in gdb to be declared "const".  If compiling ANSI, it
 385  * just works.  If compiling with gcc but non-ansi, redefine to __const__.
 386  * If non-ansi, non-gcc, then eliminate "const" entirely, making those
 387  * objects be read-write rather than read-only.
 388  */
 389
 390 #ifndef const
 391 #ifndef __STDC__
 392 # ifdef __GNUC__
 393 #  define const __const__
 394 # else
 395 #  define const /*nothing*/
 396 # endif /* GNUC */
 397 #endif /* STDC */
 398 #endif /* const */
 399
 400 #ifndef volatile
 401 #ifndef __STDC__
 402 # ifdef __GNUC__
 403 #  define volatile __volatile__
 404 # else
 405 #  define volatile /*nothing*/
 406 # endif /* GNUC */
 407 #endif /* STDC */
 408 #endif /* volatile */
 409
 410 /* The ability to declare that a function never returns is useful, but
 411    not really required to compile GDB successfully, so the NORETURN and
 412    ATTR_NORETURN macros normally expand into nothing.  */
 413
 414 /* If compiling with older versions of GCC, a function may be declared
 415    "volatile" to indicate that it does not return.  */
 416
 417 #ifndef NORETURN
 418 # if defined(__GNUC__) \
 419      && (__GNUC__ == 1 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5))
 420 #  define NORETURN volatile
 421 # else
 422 #  define NORETURN /* nothing */
 423 # endif
 424 #endif
 425
 426 /* GCC 2.5 and later versions define a function attribute "noreturn",
 427    which is the preferred way to declare that a function never returns.  */
 428
 429 #ifndef ATTR_NORETURN
 430 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 5
 431 #  define ATTR_NORETURN __attribute__ ((noreturn))
 432 # else
 433 #  define ATTR_NORETURN /* nothing */
 434 # endif
 435 #endif
 436
 437 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).  */
 438
 439 #if !defined (UINT_MAX)
 440 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 441 #endif
 442
 443 #if !defined (INT_MAX)
 444 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 445 #endif
 446
 447 #if !defined (INT_MIN)
 448 #define INT_MIN (-INT_MAX - 1)                  /* 0x80000000 for 32-bits */
 449 #endif
 450
 451 #if !defined (ULONG_MAX)
 452 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 453 #endif
 454
 455 #if !defined (LONG_MAX)
 456 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 457 #endif
 458
 459 #ifdef BFD64
 460
 461 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
 462
 463 #define LONGEST BFD_HOST_64_BIT
 464
 465 #else /* No BFD64 */
 466
 467 /* If all compilers for this host support "long long" and we want to
 468    use it for LONGEST (the performance hit is about 10% on a testsuite
 469    run based on one DECstation test), then the xm.h file can define
 470    CC_HAS_LONG_LONG.
 471
 472    Using GCC 1.39 on BSDI with long long causes about 700 new
 473    testsuite failures.  Using long long for LONGEST on the DECstation
 474    causes 3 new FAILs in the testsuite and many heuristic fencepost
 475    warnings.  These are not investigated, but a first guess would be
 476    that the BSDI problems are GCC bugs in long long support and the
 477    latter are GDB bugs.  */
 478
 479 #ifndef CC_HAS_LONG_LONG
 480 #  if defined (__GNUC__) && defined (FORCE_LONG_LONG)
 481 #    define CC_HAS_LONG_LONG 1
 482 #  endif
 483 #endif
 484
 485 /* LONGEST should not be a typedef, because "unsigned LONGEST" needs to work.
 486    CC_HAS_LONG_LONG is defined if the host compiler supports "long long"
 487    variables and we wish to make use of that support.  */
 488
 489 #ifndef LONGEST
 490 #  ifdef CC_HAS_LONG_LONG
 491 #    define LONGEST long long
 492 #  else
 493 #    define LONGEST long
 494 #  endif
 495 #endif
 496
 497 #endif /* No BFD64 */
 498
 499 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 500    arguments to a function, number in a value history, register number, etc.)
 501    where the value must not be larger than can fit in an int.  */
 502
 503 extern int longest_to_int PARAMS ((LONGEST));
 504
 505 /* Assorted functions we can declare, now that const and volatile are
 506    defined.  */
 507
 508 extern char *savestring PARAMS ((const char *, int));
 509
 510 extern char *msavestring PARAMS ((void *, const char *, int));
 511
 512 extern char *strsave PARAMS ((const char *));
 513
 514 extern char *mstrsave PARAMS ((void *, const char *));
 515
 516 extern PTR xmalloc PARAMS ((long));
 517
 518 extern PTR xrealloc PARAMS ((PTR, long));
 519
 520 extern PTR xmmalloc PARAMS ((PTR, long));
 521
 522 extern PTR xmrealloc PARAMS ((PTR, PTR, long));
 523
 524 extern PTR mmalloc PARAMS ((PTR, long));
 525
 526 extern PTR mrealloc PARAMS ((PTR, PTR, long));
 527
 528 extern void mfree PARAMS ((PTR, PTR));
 529
 530 extern int mmcheck PARAMS ((PTR, void (*) (void)));
 531
 532 extern int mmtrace PARAMS ((void));
 533
 534 extern int parse_escape PARAMS ((char **));
 535
 536 extern const char * const reg_names[];
 537
 538 /* Message to be printed before the error message, when an error occurs.  */
 539
 540 extern char *error_pre_print;
 541
 542 /* Message to be printed before the warning message, when a warning occurs.  */
 543
 544 extern char *warning_pre_print;
 545
 546 extern NORETURN void error () ATTR_NORETURN;
 547
 548 extern void error_begin PARAMS ((void));
 549
 550 extern NORETURN void fatal () ATTR_NORETURN;
 551
 552 extern NORETURN void exit PARAMS ((int)) ATTR_NORETURN; /* 4.10.4.3 */
 553
 554 extern NORETURN void nomem PARAMS ((long)) ATTR_NORETURN;
 555
 556 /* Reasons for calling return_to_top_level.  */
 557 enum return_reason {
 558   /* User interrupt.  */
 559   RETURN_QUIT,
 560
 561   /* Any other error.  */
 562   RETURN_ERROR
 563 };
 564
 565 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 566 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 567 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 568 typedef int return_mask;
 569
 570 extern NORETURN void
 571 return_to_top_level PARAMS ((enum return_reason)) ATTR_NORETURN;
 572
 573 extern int
 574 catch_errors PARAMS ((int (*) (char *), void *, char *, return_mask));
 575
 576 extern void warning_setup PARAMS ((void));
 577
 578 extern void warning ();
 579
 580 /* Global functions from other, non-gdb GNU thingies.
 581    Libiberty thingies are no longer declared here.  We include libiberty.h
 582    above, instead.  */
 583
 584 extern char *getenv PARAMS ((const char *));
 585
 586 /* From other system libraries */
 587
 588 #ifndef PSIGNAL_IN_SIGNAL_H
 589 extern void psignal PARAMS ((unsigned, const char *));
 590 #endif
 591
 592 /* For now, we can't include <stdlib.h> because it conflicts with
 593    "../include/getopt.h".  (FIXME)
 594
 595    However, if a function is defined in the ANSI C standard and a prototype
 596    for that function is defined and visible in any header file in an ANSI
 597    conforming environment, then that prototype must match the definition in
 598    the ANSI standard.  So we can just duplicate them here without conflict,
 599    since they must be the same in all conforming ANSI environments.  If
 600    these cause problems, then the environment is not ANSI conformant. */
 601
 602 #ifdef __STDC__
 603 #include <stddef.h>
 604 #endif
 605
 606 extern int fclose PARAMS ((GDB_FILE *stream));          /* 4.9.5.1 */
 607
 608 extern void perror PARAMS ((const char *));             /* 4.9.10.4 */
 609
 610 extern double atof PARAMS ((const char *nptr));         /* 4.10.1.1 */
 611
 612 extern int atoi PARAMS ((const char *));                /* 4.10.1.2 */
 613
 614 #ifndef MALLOC_INCOMPATIBLE
 615
 616 extern PTR malloc PARAMS ((size_t size));               /* 4.10.3.3 */
 617
 618 extern PTR realloc PARAMS ((void *ptr, size_t size));   /* 4.10.3.4 */
 619
 620 extern void free PARAMS ((void *));                     /* 4.10.3.2 */
 621
 622 #endif  /* MALLOC_INCOMPATIBLE */
 623
 624 extern void
 625 qsort PARAMS ((void *base, size_t nmemb,                /* 4.10.5.2 */
 626                size_t size,
 627                int (*compar)(const void *, const void *)));
 628
 629 #ifndef MEM_FNS_DECLARED        /* Some non-ANSI use void *, not char *.  */
 630 extern PTR memcpy PARAMS ((void *, const void *, size_t));  /* 4.11.2.1 */
 631
 632 extern int memcmp PARAMS ((const void *, const void *, size_t)); /* 4.11.4.1 */
 633 #endif
 634
 635 extern char *strchr PARAMS ((const char *, int));       /* 4.11.5.2 */
 636
 637 extern char *strrchr PARAMS ((const char *, int));      /* 4.11.5.5 */
 638
 639 extern char *strstr PARAMS ((const char *, const char *)); /* 4.11.5.7 */
 640
 641 extern char *strtok PARAMS ((char *, const char *));    /* 4.11.5.8 */
 642
 643 #ifndef MEM_FNS_DECLARED        /* Some non-ANSI use void *, not char *.  */
 644 extern PTR memset PARAMS ((void *, int, size_t));       /* 4.11.6.1 */
 645 #endif
 646
 647 extern char *strerror PARAMS ((int));                   /* 4.11.6.2 */
 648
 649 /* Various possibilities for alloca.  */
 650 #ifndef alloca
 651 # ifdef __GNUC__
 652 #  define alloca __builtin_alloca
 653 # else /* Not GNU C */
 654 #  ifdef sparc
 655 #   include <alloca.h>          /* NOTE:  Doesn't declare alloca() */
 656 #  endif
 657
 658 /* We need to be careful not to declare this in a way which conflicts with
 659    bison.  Bison never declares it as char *, but under various circumstances
 660    (like __hpux) we need to use void *.  */
 661 #  if defined (__STDC__) || defined (__hpux)
 662    extern void *alloca ();
 663 #  else /* Don't use void *.  */
 664    extern char *alloca ();
 665 #  endif /* Don't use void *.  */
 666 # endif /* Not GNU C */
 667 #endif /* alloca not defined */
 668
 669 /* TARGET_BYTE_ORDER and HOST_BYTE_ORDER must be defined to one of these.  */
 670
 671 #if !defined (BIG_ENDIAN)
 672 #define BIG_ENDIAN 4321
 673 #endif
 674
 675 #if !defined (LITTLE_ENDIAN)
 676 #define LITTLE_ENDIAN 1234
 677 #endif
 678
 679 /* Target-system-dependent parameters for GDB. */
 680
 681 /* Target machine definition.  This will be a symlink to one of the
 682    tm-*.h files, built by the `configure' script.  */
 683
 684 #include "tm.h"
 685
 686 /* Number of bits in a char or unsigned char for the target machine.
 687    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 688 #if !defined (TARGET_CHAR_BIT)
 689 #define TARGET_CHAR_BIT 8
 690 #endif
 691
 692 /* Number of bits in a short or unsigned short for the target machine. */
 693 #if !defined (TARGET_SHORT_BIT)
 694 #define TARGET_SHORT_BIT (2 * TARGET_CHAR_BIT)
 695 #endif
 696
 697 /* Number of bits in an int or unsigned int for the target machine. */
 698 #if !defined (TARGET_INT_BIT)
 699 #define TARGET_INT_BIT (4 * TARGET_CHAR_BIT)
 700 #endif
 701
 702 /* Number of bits in a long or unsigned long for the target machine. */
 703 #if !defined (TARGET_LONG_BIT)
 704 #define TARGET_LONG_BIT (4 * TARGET_CHAR_BIT)
 705 #endif
 706
 707 /* Number of bits in a long long or unsigned long long for the target machine. */
 708 #if !defined (TARGET_LONG_LONG_BIT)
 709 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 710 #endif
 711
 712 /* Number of bits in a float for the target machine. */
 713 #if !defined (TARGET_FLOAT_BIT)
 714 #define TARGET_FLOAT_BIT (4 * TARGET_CHAR_BIT)
 715 #endif
 716
 717 /* Number of bits in a double for the target machine. */
 718 #if !defined (TARGET_DOUBLE_BIT)
 719 #define TARGET_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 720 #endif
 721
 722 /* Number of bits in a long double for the target machine.  */
 723 #if !defined (TARGET_LONG_DOUBLE_BIT)
 724 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 725 #endif
 726
 727 /* Number of bits in a "complex" for the target machine. */
 728 #if !defined (TARGET_COMPLEX_BIT)
 729 #define TARGET_COMPLEX_BIT (2 * TARGET_FLOAT_BIT)
 730 #endif
 731
 732 /* Number of bits in a "double complex" for the target machine. */
 733 #if !defined (TARGET_DOUBLE_COMPLEX_BIT)
 734 #define TARGET_DOUBLE_COMPLEX_BIT (2 * TARGET_DOUBLE_BIT)
 735 #endif
 736
 737 /* Number of bits in a pointer for the target machine */
 738 #if !defined (TARGET_PTR_BIT)
 739 #define TARGET_PTR_BIT TARGET_INT_BIT
 740 #endif
 741
 742 /* If we picked up a copy of CHAR_BIT from a configuration file
 743    (which may get it by including <limits.h>) then use it to set
 744    the number of bits in a host char.  If not, use the same size
 745    as the target. */
 746
 747 #if defined (CHAR_BIT)
 748 #define HOST_CHAR_BIT CHAR_BIT
 749 #else
 750 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 751 #endif
 752
 753 /* The bit byte-order has to do just with numbering of bits in
 754    debugging symbols and such.  Conceptually, it's quite separate
 755    from byte/word byte order.  */
 756
 757 #if !defined (BITS_BIG_ENDIAN)
 758 #if TARGET_BYTE_ORDER == BIG_ENDIAN
 759 #define BITS_BIG_ENDIAN 1
 760 #endif /* Big endian.  */
 761
 762 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
 763 #define BITS_BIG_ENDIAN 0
 764 #endif /* Little endian.  */
 765 #endif /* BITS_BIG_ENDIAN not defined.  */
 766
 767 /* In findvar.c.  */
 768
 769 extern LONGEST extract_signed_integer PARAMS ((void *, int));
 770
 771 extern unsigned LONGEST extract_unsigned_integer PARAMS ((void *, int));
 772
 773 extern CORE_ADDR extract_address PARAMS ((void *, int));
 774
 775 extern void store_signed_integer PARAMS ((void *, int, LONGEST));
 776
 777 extern void store_unsigned_integer PARAMS ((void *, int, unsigned LONGEST));
 778
 779 extern void store_address PARAMS ((void *, int, CORE_ADDR));
 780
 781 extern double extract_floating PARAMS ((void *, int));
 782
 783 extern void store_floating PARAMS ((void *, int, double));
 784 \f
 785 /* On some machines there are bits in addresses which are not really
 786    part of the address, but are used by the kernel, the hardware, etc.
 787    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
 788    so we get a "real" address such as one would find in a symbol
 789    table.  This is used only for addresses of instructions, and even then
 790    I'm not sure it's used in all contexts.  It exists to deal with there
 791    being a few stray bits in the PC which would mislead us, not as some sort
 792    of generic thing to handle alignment or segmentation (it's possible it
 793    should be in TARGET_READ_PC instead).  */
 794 #if !defined (ADDR_BITS_REMOVE)
 795 #define ADDR_BITS_REMOVE(addr) (addr)
 796 #endif /* No ADDR_BITS_REMOVE.  */
 797
 798 /* From valops.c */
 799
 800 extern CORE_ADDR push_bytes PARAMS ((CORE_ADDR, char *, int));
 801
 802 extern CORE_ADDR push_word PARAMS ((CORE_ADDR, unsigned LONGEST));
 803
 804 /* Some parts of gdb might be considered optional, in the sense that they
 805    are not essential for being able to build a working, usable debugger
 806    for a specific environment.  For example, the maintenance commands
 807    are there for the benefit of gdb maintainers.  As another example,
 808    some environments really don't need gdb's that are able to read N
 809    different object file formats.  In order to make it possible (but
 810    not necessarily recommended) to build "stripped down" versions of
 811    gdb, the following defines control selective compilation of those
 812    parts of gdb which can be safely left out when necessary.  Note that
 813    the default is to include everything. */
 814
 815 #ifndef MAINTENANCE_CMDS
 816 #define MAINTENANCE_CMDS 1
 817 #endif
 818
 819 /* Hooks for alternate command interfaces.  */
 820
 821 extern void (*init_ui_hook) PARAMS ((void));
 822 extern void (*command_loop_hook) PARAMS ((void));
 823 extern void (*fputs_unfiltered_hook) PARAMS ((const char *linebuffer));
 824 extern void (*print_frame_info_listing_hook) PARAMS ((struct symtab *s, int line,
 825                                                int stopline, int noerror));
 826 extern int (*query_hook) PARAMS (());
 827 extern void (*flush_hook) PARAMS ((FILE *stream));
 828 extern void (*create_breakpoint_hook) PARAMS ((struct breakpoint *b));
 829 extern void (*delete_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
 830 extern void (*enable_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
 831 extern void (*disable_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
 832 extern void (*interactive_hook) PARAMS ((void));
 833
 834 /* Inhibit window interface if non-zero. */
 835
 836 extern int no_windows;
 837
 838 #endif /* !defined (DEFS_H) */