gdb/defs.h

   1 /* Basic, host-specific, and target-specific definitions for GDB.
   2    Copyright (C) 1986, 1989, 1991, 1992, 1993, 1994, 1995, 1996
   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 "config.h"             /* Generated by configure */
  25 #include <stdio.h>
  26 #include <errno.h>              /* System call error return status */
  27
  28 /* Just in case they're not defined in stdio.h. */
  29
  30 #ifndef SEEK_SET
  31 #define SEEK_SET 0
  32 #endif
  33 #ifndef SEEK_CUR
  34 #define SEEK_CUR 1
  35 #endif
  36
  37 /* First include ansidecl.h so we can use the various macro definitions
  38    here and in all subsequent file inclusions.  */
  39
  40 #include "ansidecl.h"
  41
  42 #ifdef ANSI_PROTOTYPES
  43 #include <stdarg.h>
  44 #else
  45 #include <varargs.h>
  46 #endif
  47
  48 #define PRIVATE_XMALLOC 1       /* Suppress libiberty decls for xmalloc/xrealloc */
  49 #include "libiberty.h"
  50
  51 /* libiberty.h can't declare this one, but evidently we can.  */
  52 extern char *strsignal PARAMS ((int));
  53
  54 #include "progress.h"
  55
  56 #ifndef NO_MMALLOC
  57 #include "mmalloc.h"
  58 #endif
  59
  60 /* For BFD64 and bfd_vma.  */
  61 #include "bfd.h"
  62
  63 /* An address in the program being debugged.  Host byte order.  Rather
  64    than duplicate all the logic in BFD which figures out what type
  65    this is (long, long long, etc.) and whether it needs to be 64
  66    bits (the host/target interactions are subtle), we just use
  67    bfd_vma.  */
  68
  69 typedef bfd_vma CORE_ADDR;
  70
  71 #define min(a, b) ((a) < (b) ? (a) : (b))
  72 #define max(a, b) ((a) > (b) ? (a) : (b))
  73
  74 /* Gdb does *lots* of string compares.  Use macros to speed them up by
  75    avoiding function calls if the first characters are not the same. */
  76
  77 #define STRCMP(a,b) (*(a) == *(b) ? strcmp ((a), (b)) : (int)*(a) - (int)*(b))
  78 #define STREQ(a,b) (*(a) == *(b) ? !strcmp ((a), (b)) : 0)
  79 #define STREQN(a,b,c) (*(a) == *(b) ? !strncmp ((a), (b), (c)) : 0)
  80
  81 /* The character GNU C++ uses to build identifiers that must be unique from
  82    the program's identifiers (such as $this and $$vptr).  */
  83 #define CPLUS_MARKER '$'        /* May be overridden to '.' for SysV */
  84
  85 /* Check if a character is one of the commonly used C++ marker characters.  */
  86 extern int is_cplus_marker PARAMS ((int));
  87
  88 extern int quit_flag;
  89 extern int immediate_quit;
  90 extern int sevenbit_strings;
  91
  92 extern void quit PARAMS ((void));
  93
  94 #define QUIT { \
  95   if (quit_flag) quit (); \
  96   if (interactive_hook) interactive_hook (); \
  97   PROGRESS (1); \
  98 }
  99
 100 /* Command classes are top-level categories into which commands are broken
 101    down for "help" purposes.
 102    Notes on classes: class_alias is for alias commands which are not
 103    abbreviations of the original command.  class-pseudo is for commands
 104    which are not really commands nor help topics ("stop").  */
 105
 106 enum command_class
 107 {
 108   /* Special args to help_list */
 109   all_classes = -2, all_commands = -1,
 110   /* Classes of commands */
 111   no_class = -1, class_run = 0, class_vars, class_stack,
 112   class_files, class_support, class_info, class_breakpoint,
 113   class_alias, class_obscure, class_user, class_maintenance,
 114   class_pseudo
 115 };
 116
 117 /* Languages represented in the symbol table and elsewhere.
 118    This should probably be in language.h, but since enum's can't
 119    be forward declared to satisfy opaque references before their
 120    actual definition, needs to be here. */
 121
 122 enum language
 123 {
 124    language_unknown,            /* Language not known */
 125    language_auto,               /* Placeholder for automatic setting */
 126    language_c,                  /* C */
 127    language_cplus,              /* C++ */
 128    language_chill,              /* Chill */
 129    language_fortran,            /* Fortran */
 130    language_m2,                 /* Modula-2 */
 131    language_asm,                /* Assembly language */
 132    language_scm                 /* Scheme / Guile */
 133 };
 134
 135 /* the cleanup list records things that have to be undone
 136    if an error happens (descriptors to be closed, memory to be freed, etc.)
 137    Each link in the chain records a function to call and an
 138    argument to give it.
 139
 140    Use make_cleanup to add an element to the cleanup chain.
 141    Use do_cleanups to do all cleanup actions back to a given
 142    point in the chain.  Use discard_cleanups to remove cleanups
 143    from the chain back to a given point, not doing them.  */
 144
 145 struct cleanup
 146 {
 147   struct cleanup *next;
 148   void (*function) PARAMS ((PTR));
 149   PTR arg;
 150 };
 151
 152
 153 /* The ability to declare that a function never returns is useful, but
 154    not really required to compile GDB successfully, so the NORETURN and
 155    ATTR_NORETURN macros normally expand into nothing.  */
 156
 157 /* If compiling with older versions of GCC, a function may be declared
 158    "volatile" to indicate that it does not return.  */
 159
 160 #ifndef NORETURN
 161 # if defined(__GNUC__) \
 162      && (__GNUC__ == 1 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7))
 163 #  define NORETURN volatile
 164 # else
 165 #  define NORETURN /* nothing */
 166 # endif
 167 #endif
 168
 169 /* GCC 2.5 and later versions define a function attribute "noreturn",
 170    which is the preferred way to declare that a function never returns.
 171    However GCC 2.7 appears to be the first version in which this fully
 172    works everywhere we use it. */
 173
 174 #ifndef ATTR_NORETURN
 175 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 7
 176 #  define ATTR_NORETURN __attribute__ ((noreturn))
 177 # else
 178 #  define ATTR_NORETURN /* nothing */
 179 # endif
 180 #endif
 181
 182 #ifndef ATTR_FORMAT
 183 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 4 && defined (__ANSI_PROTOTYPES)
 184 #  define ATTR_FORMAT(type, x, y) __attribute__ ((format(type, x, y)))
 185 # else
 186 #  define ATTR_FORMAT(type, x, y) /* nothing */
 187 # endif
 188 #endif
 189
 190 /* Needed for various prototypes */
 191
 192 #ifdef __STDC__
 193 struct symtab;
 194 struct breakpoint;
 195 #endif
 196
 197 /* From blockframe.c */
 198
 199 extern int inside_entry_func PARAMS ((CORE_ADDR));
 200
 201 extern int inside_entry_file PARAMS ((CORE_ADDR addr));
 202
 203 extern int inside_main_func PARAMS ((CORE_ADDR pc));
 204
 205 /* From ch-lang.c, for the moment. (FIXME) */
 206
 207 extern char *chill_demangle PARAMS ((const char *));
 208
 209 /* From utils.c */
 210
 211 extern PTR xmalloc PARAMS ((long));
 212
 213 extern PTR xrealloc PARAMS ((PTR, long));
 214
 215 extern void notice_quit PARAMS ((void));
 216
 217 extern int strcmp_iw PARAMS ((const char *, const char *));
 218
 219 extern char *safe_strerror PARAMS ((int));
 220
 221 extern char *safe_strsignal PARAMS ((int));
 222
 223 extern void init_malloc PARAMS ((void *));
 224
 225 extern void request_quit PARAMS ((int));
 226
 227 extern void do_cleanups PARAMS ((struct cleanup *));
 228
 229 extern void discard_cleanups PARAMS ((struct cleanup *));
 230
 231 /* The bare make_cleanup function is one of those rare beasts that
 232    takes almost any type of function as the first arg and anything that
 233    will fit in a "void *" as the second arg.
 234
 235    Should be, once all calls and called-functions are cleaned up:
 236 extern struct cleanup *
 237 make_cleanup PARAMS ((void (*function) (void *), void *));
 238
 239    Until then, lint and/or various type-checking compiler options will
 240    complain about make_cleanup calls.  It'd be wrong to just cast things,
 241    since the type actually passed when the function is called would be
 242    wrong.  */
 243
 244 extern struct cleanup *make_cleanup ();
 245
 246 extern struct cleanup *save_cleanups PARAMS ((void));
 247
 248 extern void restore_cleanups PARAMS ((struct cleanup *));
 249
 250 extern void free_current_contents PARAMS ((char **));
 251
 252 extern void null_cleanup PARAMS ((PTR));
 253
 254 extern int myread PARAMS ((int, char *, int));
 255
 256 extern int query PARAMS((char *, ...))
 257      ATTR_FORMAT(printf, 1, 2);
 258
 259 /* From demangle.c */
 260
 261 extern void set_demangling_style PARAMS ((char *));
 262
 263 \f
 264 /* Annotation stuff.  */
 265
 266 extern int annotation_level; /* in stack.c */
 267 \f
 268 extern void begin_line PARAMS ((void));
 269
 270 extern void wrap_here PARAMS ((char *));
 271
 272 extern void reinitialize_more_filter PARAMS ((void));
 273
 274 typedef FILE GDB_FILE;
 275 #define gdb_stdout stdout
 276 #define gdb_stderr stderr
 277
 278 extern void gdb_flush PARAMS ((GDB_FILE *));
 279
 280 extern GDB_FILE *gdb_fopen PARAMS ((char * name, char * mode));
 281
 282 extern void fputs_filtered PARAMS ((const char *, GDB_FILE *));
 283
 284 extern void fputs_unfiltered PARAMS ((const char *, GDB_FILE *));
 285
 286 extern int fputc_unfiltered PARAMS ((int c, GDB_FILE *));
 287
 288 extern int putchar_unfiltered PARAMS ((int c));
 289
 290 extern void puts_filtered PARAMS ((const char *));
 291
 292 extern void puts_unfiltered PARAMS ((const char *));
 293
 294 extern void vprintf_filtered PARAMS ((const char *, va_list))
 295      ATTR_FORMAT(printf, 1, 0);
 296
 297 extern void vfprintf_filtered PARAMS ((FILE *, const char *, va_list))
 298      ATTR_FORMAT(printf, 2, 0);
 299
 300 extern void fprintf_filtered PARAMS ((FILE *, const char *, ...))
 301      ATTR_FORMAT(printf, 2, 3);
 302
 303 extern void fprintfi_filtered PARAMS ((int, FILE *, const char *, ...))
 304      ATTR_FORMAT(printf, 3, 4);
 305
 306 extern void printf_filtered PARAMS ((const char *, ...))
 307      ATTR_FORMAT(printf, 1, 2);
 308
 309 extern void printfi_filtered PARAMS ((int, const char *, ...))
 310      ATTR_FORMAT(printf, 2, 3);
 311
 312 extern void vprintf_unfiltered PARAMS ((const char *, va_list))
 313      ATTR_FORMAT(printf, 1, 0);
 314
 315 extern void vfprintf_unfiltered PARAMS ((FILE *, const char *, va_list))
 316      ATTR_FORMAT(printf, 2, 0);
 317
 318 extern void fprintf_unfiltered PARAMS ((FILE *, const char *, ...))
 319      ATTR_FORMAT(printf, 2, 3);
 320
 321 extern void printf_unfiltered PARAMS ((const char *, ...))
 322      ATTR_FORMAT(printf, 1, 2);
 323
 324 extern void print_spaces PARAMS ((int, GDB_FILE *));
 325
 326 extern void print_spaces_filtered PARAMS ((int, GDB_FILE *));
 327
 328 extern char *n_spaces PARAMS ((int));
 329
 330 extern void gdb_printchar PARAMS ((int, GDB_FILE *, int));
 331
 332 extern void gdb_print_address PARAMS ((void *, GDB_FILE *));
 333
 334 extern void fprintf_symbol_filtered PARAMS ((GDB_FILE *, char *,
 335                                              enum language, int));
 336
 337 extern void perror_with_name PARAMS ((char *));
 338
 339 extern void print_sys_errmsg PARAMS ((char *, int));
 340
 341 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 342    "const char *" in unistd.h, so we can't declare the argument
 343    as "char *".  */
 344
 345 extern char *re_comp PARAMS ((const char *));
 346
 347 /* From symfile.c */
 348
 349 extern void symbol_file_command PARAMS ((char *, int));
 350
 351 /* From top.c */
 352
 353 extern char *skip_quoted PARAMS ((char *));
 354
 355 extern char *gdb_readline PARAMS ((char *));
 356
 357 extern char *command_line_input PARAMS ((char *, int, char *));
 358
 359 extern void print_prompt PARAMS ((void));
 360
 361 extern int input_from_terminal_p PARAMS ((void));
 362
 363 extern int info_verbose;
 364
 365 /* From printcmd.c */
 366
 367 extern void set_next_address PARAMS ((CORE_ADDR));
 368
 369 extern void print_address_symbolic PARAMS ((CORE_ADDR, GDB_FILE *, int,
 370                                             char *));
 371
 372 extern void print_address_numeric PARAMS ((CORE_ADDR, int, GDB_FILE *));
 373
 374 extern void print_address PARAMS ((CORE_ADDR, GDB_FILE *));
 375
 376 /* From source.c */
 377
 378 extern int openp PARAMS ((char *, int, char *, int, int, char **));
 379
 380 extern void mod_path PARAMS ((char *, char **));
 381
 382 extern void directory_command PARAMS ((char *, int));
 383
 384 extern void init_source_path PARAMS ((void));
 385
 386 extern char *symtab_to_filename PARAMS ((struct symtab *));
 387
 388 /* From findvar.c */
 389
 390 extern int read_relative_register_raw_bytes PARAMS ((int, char *));
 391
 392 /* From readline (but not in any readline .h files).  */
 393
 394 extern char *tilde_expand PARAMS ((char *));
 395
 396 /* Control types for commands */
 397
 398 enum misc_command_type
 399 {
 400   ok_command,
 401   end_command,
 402   else_command,
 403   nop_command
 404 };
 405
 406 enum command_control_type
 407 {
 408   simple_control,
 409   break_control,
 410   continue_control,
 411   while_control,
 412   if_control,
 413   invalid_control
 414 };
 415
 416 /* Structure for saved commands lines
 417    (for breakpoints, defined commands, etc).  */
 418
 419 struct command_line
 420 {
 421   struct command_line *next;
 422   char *line;
 423   enum command_control_type control_type;
 424   int body_count;
 425   struct command_line **body_list;
 426 };
 427
 428 extern struct command_line *read_command_lines PARAMS ((char *, int));
 429
 430 extern void free_command_lines PARAMS ((struct command_line **));
 431
 432 /* String containing the current directory (what getwd would return).  */
 433
 434 extern char *current_directory;
 435
 436 /* Default radixes for input and output.  Only some values supported.  */
 437 extern unsigned input_radix;
 438 extern unsigned output_radix;
 439
 440 /* Possibilities for prettyprint parameters to routines which print
 441    things.  Like enum language, this should be in value.h, but needs
 442    to be here for the same reason.  FIXME:  If we can eliminate this
 443    as an arg to LA_VAL_PRINT, then we can probably move it back to
 444    value.h. */
 445
 446 enum val_prettyprint
 447 {
 448   Val_no_prettyprint = 0,
 449   Val_prettyprint,
 450   /* Use the default setting which the user has specified.  */
 451   Val_pretty_default
 452 };
 453
 454 \f
 455 /* Host machine definition.  This will be a symlink to one of the
 456    xm-*.h files, built by the `configure' script.  */
 457
 458 #include "xm.h"
 459
 460 /* Native machine support.  This will be a symlink to one of the
 461    nm-*.h files, built by the `configure' script.  */
 462
 463 #include "nm.h"
 464
 465 /* Target machine definition.  This will be a symlink to one of the
 466    tm-*.h files, built by the `configure' script.  */
 467
 468 #include "tm.h"
 469
 470 /* If the xm.h file did not define the mode string used to open the
 471    files, assume that binary files are opened the same way as text
 472    files */
 473 #ifndef FOPEN_RB
 474 #include "fopen-same.h"
 475 #endif
 476
 477 /*
 478  * Allow things in gdb to be declared "const".  If compiling ANSI, it
 479  * just works.  If compiling with gcc but non-ansi, redefine to __const__.
 480  * If non-ansi, non-gcc, then eliminate "const" entirely, making those
 481  * objects be read-write rather than read-only.
 482  */
 483
 484 #ifndef const
 485 #ifndef __STDC__
 486 # ifdef __GNUC__
 487 #  define const __const__
 488 # else
 489 #  define const /*nothing*/
 490 # endif /* GNUC */
 491 #endif /* STDC */
 492 #endif /* const */
 493
 494 #ifndef volatile
 495 #ifndef __STDC__
 496 # ifdef __GNUC__
 497 #  define volatile __volatile__
 498 # else
 499 #  define volatile /*nothing*/
 500 # endif /* GNUC */
 501 #endif /* STDC */
 502 #endif /* volatile */
 503
 504 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).  */
 505
 506 #if !defined (UINT_MAX)
 507 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 508 #endif
 509
 510 #if !defined (INT_MAX)
 511 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 512 #endif
 513
 514 #if !defined (INT_MIN)
 515 #define INT_MIN (-INT_MAX - 1)                  /* 0x80000000 for 32-bits */
 516 #endif
 517
 518 #if !defined (ULONG_MAX)
 519 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 520 #endif
 521
 522 #if !defined (LONG_MAX)
 523 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 524 #endif
 525
 526 #ifdef BFD64
 527
 528 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
 529
 530 #define LONGEST BFD_HOST_64_BIT
 531
 532 #else /* No BFD64 */
 533
 534 /* If all compilers for this host support "long long" and we want to
 535    use it for LONGEST (the performance hit is about 10% on a testsuite
 536    run based on one DECstation test), then the xm.h file can define
 537    CC_HAS_LONG_LONG.
 538
 539    Using GCC 1.39 on BSDI with long long causes about 700 new
 540    testsuite failures.  Using long long for LONGEST on the DECstation
 541    causes 3 new FAILs in the testsuite and many heuristic fencepost
 542    warnings.  These are not investigated, but a first guess would be
 543    that the BSDI problems are GCC bugs in long long support and the
 544    latter are GDB bugs.  */
 545
 546 #ifndef CC_HAS_LONG_LONG
 547 #  if defined (__GNUC__) && defined (FORCE_LONG_LONG)
 548 #    define CC_HAS_LONG_LONG 1
 549 #  endif
 550 #endif
 551
 552 /* LONGEST should not be a typedef, because "unsigned LONGEST" needs to work.
 553    CC_HAS_LONG_LONG is defined if the host compiler supports "long long"
 554    variables and we wish to make use of that support.  */
 555
 556 #ifndef LONGEST
 557 #  ifdef CC_HAS_LONG_LONG
 558 #    define LONGEST long long
 559 #  else
 560 #    define LONGEST long
 561 #  endif
 562 #endif
 563
 564 #endif /* No BFD64 */
 565
 566 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 567    arguments to a function, number in a value history, register number, etc.)
 568    where the value must not be larger than can fit in an int.  */
 569
 570 extern int longest_to_int PARAMS ((LONGEST));
 571
 572 /* Assorted functions we can declare, now that const and volatile are
 573    defined.  */
 574
 575 extern char *savestring PARAMS ((const char *, int));
 576
 577 extern char *msavestring PARAMS ((void *, const char *, int));
 578
 579 extern char *strsave PARAMS ((const char *));
 580
 581 extern char *mstrsave PARAMS ((void *, const char *));
 582
 583 extern PTR xmmalloc PARAMS ((PTR, long));
 584
 585 extern PTR xmrealloc PARAMS ((PTR, PTR, long));
 586
 587 extern int parse_escape PARAMS ((char **));
 588
 589 extern char *reg_names[];
 590
 591 /* Message to be printed before the error message, when an error occurs.  */
 592
 593 extern char *error_pre_print;
 594
 595 /* Message to be printed before the error message, when an error occurs.  */
 596
 597 extern char *quit_pre_print;
 598
 599 /* Message to be printed before the warning message, when a warning occurs.  */
 600
 601 extern char *warning_pre_print;
 602
 603 extern NORETURN void error PARAMS((char *, ...)) ATTR_NORETURN;
 604
 605 extern void error_begin PARAMS ((void));
 606
 607 extern NORETURN void fatal PARAMS((char *, ...)) ATTR_NORETURN;
 608
 609 extern NORETURN void nomem PARAMS ((long)) ATTR_NORETURN;
 610
 611 /* Reasons for calling return_to_top_level.  */
 612 enum return_reason {
 613   /* User interrupt.  */
 614   RETURN_QUIT,
 615
 616   /* Any other error.  */
 617   RETURN_ERROR
 618 };
 619
 620 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 621 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 622 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 623 typedef int return_mask;
 624
 625 extern NORETURN void
 626 return_to_top_level PARAMS ((enum return_reason)) ATTR_NORETURN;
 627
 628 extern int
 629 catch_errors PARAMS ((int (*) (char *), void *, char *, return_mask));
 630
 631 extern void warning_begin PARAMS ((void));
 632
 633 extern void warning PARAMS ((char *, ...))
 634      ATTR_FORMAT(printf, 1, 2);
 635
 636 /* Global functions from other, non-gdb GNU thingies.
 637    Libiberty thingies are no longer declared here.  We include libiberty.h
 638    above, instead.  */
 639
 640 #ifndef GETENV_PROVIDED
 641 extern char *getenv PARAMS ((const char *));
 642 #endif
 643
 644 /* From other system libraries */
 645
 646 #ifdef __STDC__
 647 #include <stddef.h>
 648 #include <stdlib.h>
 649 #endif
 650
 651
 652 /* We take the address of fclose later, but some stdio's forget
 653    to declare this.  We can't always declare it since there's
 654    no way to declare the parameters without upsetting some compiler
 655    somewhere. */
 656
 657 #ifndef FCLOSE_PROVIDED
 658 extern int fclose PARAMS ((FILE *));
 659 #endif
 660
 661 #ifndef atof
 662 extern double atof PARAMS ((const char *));     /* X3.159-1989  4.10.1.1 */
 663 #endif
 664
 665 #ifndef MALLOC_INCOMPATIBLE
 666
 667 extern PTR malloc ();
 668
 669 extern PTR realloc ();
 670
 671 extern void free ();
 672
 673 #endif /* MALLOC_INCOMPATIBLE */
 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 #ifdef HAVE_ENDIAN_H
 698 #include <endian.h>
 699 #endif
 700
 701 #if !defined (BIG_ENDIAN)
 702 #define BIG_ENDIAN 4321
 703 #endif
 704
 705 #if !defined (LITTLE_ENDIAN)
 706 #define LITTLE_ENDIAN 1234
 707 #endif
 708
 709 /* Target-system-dependent parameters for GDB. */
 710
 711 #ifdef TARGET_BYTE_ORDER_SELECTABLE
 712 /* The target endianness is selectable at runtime.  Define
 713    TARGET_BYTE_ORDER to be a variable.  The user can use the `set
 714    endian' command to change it.  */
 715 #undef TARGET_BYTE_ORDER
 716 #define TARGET_BYTE_ORDER target_byte_order
 717 extern int target_byte_order;
 718 #endif
 719
 720 extern void set_endian_from_file PARAMS ((bfd *));
 721
 722 /* Number of bits in a char or unsigned char for the target machine.
 723    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 724 #if !defined (TARGET_CHAR_BIT)
 725 #define TARGET_CHAR_BIT 8
 726 #endif
 727
 728 /* Number of bits in a short or unsigned short for the target machine. */
 729 #if !defined (TARGET_SHORT_BIT)
 730 #define TARGET_SHORT_BIT (2 * TARGET_CHAR_BIT)
 731 #endif
 732
 733 /* Number of bits in an int or unsigned int for the target machine. */
 734 #if !defined (TARGET_INT_BIT)
 735 #define TARGET_INT_BIT (4 * TARGET_CHAR_BIT)
 736 #endif
 737
 738 /* Number of bits in a long or unsigned long for the target machine. */
 739 #if !defined (TARGET_LONG_BIT)
 740 #define TARGET_LONG_BIT (4 * TARGET_CHAR_BIT)
 741 #endif
 742
 743 /* Number of bits in a long long or unsigned long long for the target machine. */
 744 #if !defined (TARGET_LONG_LONG_BIT)
 745 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 746 #endif
 747
 748 /* Number of bits in a float for the target machine. */
 749 #if !defined (TARGET_FLOAT_BIT)
 750 #define TARGET_FLOAT_BIT (4 * TARGET_CHAR_BIT)
 751 #endif
 752
 753 /* Number of bits in a double for the target machine. */
 754 #if !defined (TARGET_DOUBLE_BIT)
 755 #define TARGET_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 756 #endif
 757
 758 /* Number of bits in a long double for the target machine.  */
 759 #if !defined (TARGET_LONG_DOUBLE_BIT)
 760 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 761 #endif
 762
 763 /* Number of bits in a pointer for the target machine */
 764 #if !defined (TARGET_PTR_BIT)
 765 #define TARGET_PTR_BIT TARGET_INT_BIT
 766 #endif
 767
 768 /* If we picked up a copy of CHAR_BIT from a configuration file
 769    (which may get it by including <limits.h>) then use it to set
 770    the number of bits in a host char.  If not, use the same size
 771    as the target. */
 772
 773 #if defined (CHAR_BIT)
 774 #define HOST_CHAR_BIT CHAR_BIT
 775 #else
 776 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 777 #endif
 778
 779 /* The bit byte-order has to do just with numbering of bits in
 780    debugging symbols and such.  Conceptually, it's quite separate
 781    from byte/word byte order.  */
 782
 783 #if !defined (BITS_BIG_ENDIAN)
 784 #ifndef TARGET_BYTE_ORDER_SELECTABLE
 785
 786 #if TARGET_BYTE_ORDER == BIG_ENDIAN
 787 #define BITS_BIG_ENDIAN 1
 788 #endif /* Big endian.  */
 789
 790 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
 791 #define BITS_BIG_ENDIAN 0
 792 #endif /* Little endian.  */
 793
 794 #else /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
 795
 796 #define BITS_BIG_ENDIAN (TARGET_BYTE_ORDER == BIG_ENDIAN)
 797
 798 #endif /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
 799 #endif /* BITS_BIG_ENDIAN not defined.  */
 800
 801 /* In findvar.c.  */
 802
 803 extern LONGEST extract_signed_integer PARAMS ((void *, int));
 804
 805 extern unsigned LONGEST extract_unsigned_integer PARAMS ((void *, int));
 806
 807 extern int extract_long_unsigned_integer PARAMS ((void *, int, LONGEST *));
 808
 809 extern CORE_ADDR extract_address PARAMS ((void *, int));
 810
 811 extern void store_signed_integer PARAMS ((void *, int, LONGEST));
 812
 813 extern void store_unsigned_integer PARAMS ((void *, int, unsigned LONGEST));
 814
 815 extern void store_address PARAMS ((void *, int, CORE_ADDR));
 816
 817 /* Setup definitions for host and target floating point formats.  We need to
 818    consider the format for `float', `double', and `long double' for both target
 819    and host.  We need to do this so that we know what kind of conversions need
 820    to be done when converting target numbers to and from the hosts DOUBLEST
 821    data type.  */
 822
 823 /* This is used to indicate that we don't know the format of the floating point
 824    number.  Typically, this is useful for native ports, where the actual format
 825    is irrelevant, since no conversions will be taking place.  */
 826
 827 extern const struct floatformat floatformat_unknown;
 828
 829 #if HOST_BYTE_ORDER == BIG_ENDIAN
 830 #  ifndef HOST_FLOAT_FORMAT
 831 #    define HOST_FLOAT_FORMAT &floatformat_ieee_single_big
 832 #  endif
 833 #  ifndef HOST_DOUBLE_FORMAT
 834 #    define HOST_DOUBLE_FORMAT &floatformat_ieee_double_big
 835 #  endif
 836 #else                           /* LITTLE_ENDIAN */
 837 #  ifndef HOST_FLOAT_FORMAT
 838 #    define HOST_FLOAT_FORMAT &floatformat_ieee_single_little
 839 #  endif
 840 #  ifndef HOST_DOUBLE_FORMAT
 841 #    define HOST_DOUBLE_FORMAT &floatformat_ieee_double_little
 842 #  endif
 843 #endif
 844
 845 #ifndef HOST_LONG_DOUBLE_FORMAT
 846 #define HOST_LONG_DOUBLE_FORMAT &floatformat_unknown
 847 #endif
 848
 849 #ifndef TARGET_BYTE_ORDER_SELECTABLE
 850 #  if TARGET_BYTE_ORDER == BIG_ENDIAN
 851 #    ifndef TARGET_FLOAT_FORMAT
 852 #      define TARGET_FLOAT_FORMAT &floatformat_ieee_single_big
 853 #    endif
 854 #    ifndef TARGET_DOUBLE_FORMAT
 855 #      define TARGET_DOUBLE_FORMAT &floatformat_ieee_double_big
 856 #    endif
 857 #  else /* LITTLE_ENDIAN */
 858 #    ifndef TARGET_FLOAT_FORMAT
 859 #      define TARGET_FLOAT_FORMAT &floatformat_ieee_single_little
 860 #    endif
 861 #    ifndef TARGET_DOUBLE_FORMAT
 862 #      define TARGET_DOUBLE_FORMAT &floatformat_ieee_double_little
 863 #    endif
 864 #  endif
 865 #else                           /* TARGET_BYTE_ORDER_SELECTABLE */
 866 #  ifndef TARGET_FLOAT_FORMAT
 867 #    define TARGET_FLOAT_FORMAT (target_byte_order == BIG_ENDIAN \
 868                                  ? &floatformat_ieee_single_big \
 869                                  : &floatformat_ieee_single_little)
 870 #  endif
 871 #  ifndef TARGET_DOUBLE_FORMAT
 872 #    define TARGET_DOUBLE_FORMAT (target_byte_order == BIG_ENDIAN \
 873                                   ? &floatformat_ieee_double_big \
 874                                   : &floatformat_ieee_double_little)
 875 #  endif
 876 #endif
 877
 878 #ifndef TARGET_LONG_DOUBLE_FORMAT
 879 #  define TARGET_LONG_DOUBLE_FORMAT &floatformat_unknown
 880 #endif
 881
 882 /* Use `long double' if the host compiler supports it.  (Note that this is not
 883    necessarily any longer than `double'.  On SunOS/gcc, it's the same as
 884    double.)  This is necessary because GDB internally converts all floating
 885    point values to the widest type supported by the host.
 886
 887    There are problems however, when the target `long double' is longer than the
 888    host's `long double'.  In general, we'll probably reduce the precision of
 889    any such values and print a warning.  */
 890
 891 #ifdef HAVE_LONG_DOUBLE
 892 typedef long double DOUBLEST;
 893 #else
 894 typedef double DOUBLEST;
 895 #endif
 896
 897 extern void floatformat_to_doublest PARAMS ((const struct floatformat *,
 898                                              char *, DOUBLEST *));
 899 extern void floatformat_from_doublest PARAMS ((const struct floatformat *,
 900                                                DOUBLEST *, char *));
 901 extern DOUBLEST extract_floating PARAMS ((void *, int));
 902
 903 extern void store_floating PARAMS ((void *, int, DOUBLEST));
 904 \f
 905 /* On some machines there are bits in addresses which are not really
 906    part of the address, but are used by the kernel, the hardware, etc.
 907    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
 908    so we get a "real" address such as one would find in a symbol
 909    table.  This is used only for addresses of instructions, and even then
 910    I'm not sure it's used in all contexts.  It exists to deal with there
 911    being a few stray bits in the PC which would mislead us, not as some sort
 912    of generic thing to handle alignment or segmentation (it's possible it
 913    should be in TARGET_READ_PC instead).  */
 914 #if !defined (ADDR_BITS_REMOVE)
 915 #define ADDR_BITS_REMOVE(addr) (addr)
 916 #endif /* No ADDR_BITS_REMOVE.  */
 917
 918 /* From valops.c */
 919
 920 extern CORE_ADDR push_bytes PARAMS ((CORE_ADDR, char *, int));
 921
 922 extern CORE_ADDR push_word PARAMS ((CORE_ADDR, unsigned LONGEST));
 923
 924 /* Some parts of gdb might be considered optional, in the sense that they
 925    are not essential for being able to build a working, usable debugger
 926    for a specific environment.  For example, the maintenance commands
 927    are there for the benefit of gdb maintainers.  As another example,
 928    some environments really don't need gdb's that are able to read N
 929    different object file formats.  In order to make it possible (but
 930    not necessarily recommended) to build "stripped down" versions of
 931    gdb, the following defines control selective compilation of those
 932    parts of gdb which can be safely left out when necessary.  Note that
 933    the default is to include everything. */
 934
 935 #ifndef MAINTENANCE_CMDS
 936 #define MAINTENANCE_CMDS 1
 937 #endif
 938
 939 #ifdef MAINTENANCE_CMDS
 940 extern int watchdog;
 941 #endif
 942
 943 #include "dis-asm.h"            /* Get defs for disassemble_info */
 944
 945 extern int dis_asm_read_memory PARAMS ((bfd_vma memaddr, bfd_byte *myaddr,
 946                                         int len, disassemble_info *info));
 947
 948 extern void dis_asm_memory_error PARAMS ((int status, bfd_vma memaddr,
 949                                           disassemble_info *info));
 950
 951 extern void dis_asm_print_address PARAMS ((bfd_vma addr,
 952                                            disassemble_info *info));
 953
 954 extern int (*tm_print_insn) PARAMS ((bfd_vma, disassemble_info*));
 955 extern disassemble_info tm_print_insn_info;
 956
 957 /* Hooks for alternate command interfaces.  */
 958
 959 #ifdef __STDC__
 960 struct target_waitstatus;
 961 struct cmd_list_element;
 962 #endif
 963
 964 extern void (*init_ui_hook) PARAMS ((void));
 965 extern void (*command_loop_hook) PARAMS ((void));
 966 extern void (*fputs_unfiltered_hook) PARAMS ((const char *linebuffer,
 967                                               FILE *stream));
 968 extern void (*print_frame_info_listing_hook) PARAMS ((struct symtab *s,
 969                                                       int line, int stopline,
 970                                                       int noerror));
 971 extern int (*query_hook) PARAMS ((const char *, va_list));
 972 extern void (*flush_hook) PARAMS ((FILE *stream));
 973 extern void (*create_breakpoint_hook) PARAMS ((struct breakpoint *b));
 974 extern void (*delete_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
 975 extern void (*modify_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
 976 extern void (*target_output_hook) PARAMS ((char *));
 977 extern void (*interactive_hook) PARAMS ((void));
 978 extern void (*registers_changed_hook) PARAMS ((void));
 979 extern void (*readline_begin_hook) PARAMS ((char *, ...));
 980 extern char * (*readline_hook) PARAMS ((char *));
 981 extern void (*readline_end_hook) PARAMS ((void));
 982
 983 extern int (*target_wait_hook) PARAMS ((int pid,
 984                                         struct target_waitstatus *status));
 985
 986 extern void (*call_command_hook) PARAMS ((struct cmd_list_element *c,
 987                                           char *cmd, int from_tty));
 988
 989 extern NORETURN void (*error_hook) PARAMS ((void)) ATTR_NORETURN;
 990
 991
 992
 993 /* Inhibit window interface if non-zero. */
 994
 995 extern int use_windows;
 996
 997 /* Symbolic definitions of filename-related things.  */
 998 /* FIXME, this doesn't work very well if host and executable
 999    filesystems conventions are different.  */
1000
1001 #ifndef DIRNAME_SEPARATOR
1002 #define DIRNAME_SEPARATOR ':'
1003 #endif
1004
1005 #ifndef SLASH_P
1006 #if defined(__GO32__)||defined(__WIN32__)
1007 #define SLASH_P(X) ((X)=='\\')
1008 #else
1009 #define SLASH_P(X) ((X)=='/')
1010 #endif
1011 #endif
1012
1013 #ifndef SLASH_CHAR
1014 #if defined(__GO32__)||defined(__WIN32__)
1015 #define SLASH_CHAR '\\'
1016 #else
1017 #define SLASH_CHAR '/'
1018 #endif
1019 #endif
1020
1021 #ifndef SLASH_STRING
1022 #if defined(__GO32__)||defined(__WIN32__)
1023 #define SLASH_STRING "\\"
1024 #else
1025 #define SLASH_STRING "/"
1026 #endif
1027 #endif
1028
1029 #ifndef ROOTED_P
1030 #define ROOTED_P(X) (SLASH_P((X)[0]))
1031 #endif
1032
1033 #endif /* #ifndef DEFS_H */