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 #include "libiberty.h"
  49
  50 /* libiberty.h can't declare this one, but evidently we can.  */
  51 extern char *strsignal PARAMS ((int));
  52
  53 #include "progress.h"
  54
  55 #ifndef NO_MMALLOC
  56 #include "mmalloc.h"
  57 #endif
  58
  59 /* For BFD64 and bfd_vma.  */
  60 #include "bfd.h"
  61
  62 /* An address in the program being debugged.  Host byte order.  Rather
  63    than duplicate all the logic in BFD which figures out what type
  64    this is (long, long long, etc.) and whether it needs to be 64
  65    bits (the host/target interactions are subtle), we just use
  66    bfd_vma.  */
  67
  68 typedef bfd_vma CORE_ADDR;
  69
  70 #ifndef min
  71 #define min(a, b) ((a) < (b) ? (a) : (b))
  72 #endif
  73 #ifndef max
  74 #define max(a, b) ((a) > (b) ? (a) : (b))
  75 #endif
  76
  77 /* Gdb does *lots* of string compares.  Use macros to speed them up by
  78    avoiding function calls if the first characters are not the same. */
  79
  80 #define STRCMP(a,b) (*(a) == *(b) ? strcmp ((a), (b)) : (int)*(a) - (int)*(b))
  81 #define STREQ(a,b) (*(a) == *(b) ? !strcmp ((a), (b)) : 0)
  82 #define STREQN(a,b,c) (*(a) == *(b) ? !strncmp ((a), (b), (c)) : 0)
  83
  84 /* The character GNU C++ uses to build identifiers that must be unique from
  85    the program's identifiers (such as $this and $$vptr).  */
  86 #define CPLUS_MARKER '$'        /* May be overridden to '.' for SysV */
  87
  88 /* Check if a character is one of the commonly used C++ marker characters.  */
  89 extern int is_cplus_marker PARAMS ((int));
  90
  91 extern int quit_flag;
  92 extern int immediate_quit;
  93 extern int sevenbit_strings;
  94
  95 extern void quit PARAMS ((void));
  96
  97 #ifdef QUIT
  98 /* do twice to force compiler warning */
  99 #define QUIT_FIXME "FIXME"
 100 #define QUIT_FIXME "ignoring redefinition of QUIT"
 101 #else
 102 #define QUIT { \
 103   if (quit_flag) quit (); \
 104   if (interactive_hook) interactive_hook (); \
 105   PROGRESS (1); \
 106 }
 107 #endif
 108
 109 /* Command classes are top-level categories into which commands are broken
 110    down for "help" purposes.
 111    Notes on classes: class_alias is for alias commands which are not
 112    abbreviations of the original command.  class-pseudo is for commands
 113    which are not really commands nor help topics ("stop").  */
 114
 115 enum command_class
 116 {
 117   /* Special args to help_list */
 118   all_classes = -2, all_commands = -1,
 119   /* Classes of commands */
 120   no_class = -1, class_run = 0, class_vars, class_stack,
 121   class_files, class_support, class_info, class_breakpoint,
 122   class_alias, class_obscure, class_user, class_maintenance,
 123   class_pseudo
 124 };
 125
 126 /* Languages represented in the symbol table and elsewhere.
 127    This should probably be in language.h, but since enum's can't
 128    be forward declared to satisfy opaque references before their
 129    actual definition, needs to be here. */
 130
 131 enum language
 132 {
 133    language_unknown,            /* Language not known */
 134    language_auto,               /* Placeholder for automatic setting */
 135    language_c,                  /* C */
 136    language_cplus,              /* C++ */
 137    language_chill,              /* Chill */
 138    language_fortran,            /* Fortran */
 139    language_m2,                 /* Modula-2 */
 140    language_asm,                /* Assembly language */
 141    language_scm                 /* Scheme / Guile */
 142 };
 143
 144 /* the cleanup list records things that have to be undone
 145    if an error happens (descriptors to be closed, memory to be freed, etc.)
 146    Each link in the chain records a function to call and an
 147    argument to give it.
 148
 149    Use make_cleanup to add an element to the cleanup chain.
 150    Use do_cleanups to do all cleanup actions back to a given
 151    point in the chain.  Use discard_cleanups to remove cleanups
 152    from the chain back to a given point, not doing them.  */
 153
 154 struct cleanup
 155 {
 156   struct cleanup *next;
 157   void (*function) PARAMS ((PTR));
 158   PTR arg;
 159 };
 160
 161
 162 /* The ability to declare that a function never returns is useful, but
 163    not really required to compile GDB successfully, so the NORETURN and
 164    ATTR_NORETURN macros normally expand into nothing.  */
 165
 166 /* If compiling with older versions of GCC, a function may be declared
 167    "volatile" to indicate that it does not return.  */
 168
 169 #ifndef NORETURN
 170 # if defined(__GNUC__) \
 171      && (__GNUC__ == 1 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7))
 172 #  define NORETURN volatile
 173 # else
 174 #  define NORETURN /* nothing */
 175 # endif
 176 #endif
 177
 178 /* GCC 2.5 and later versions define a function attribute "noreturn",
 179    which is the preferred way to declare that a function never returns.
 180    However GCC 2.7 appears to be the first version in which this fully
 181    works everywhere we use it. */
 182
 183 #ifndef ATTR_NORETURN
 184 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 7
 185 #  define ATTR_NORETURN __attribute__ ((noreturn))
 186 # else
 187 #  define ATTR_NORETURN /* nothing */
 188 # endif
 189 #endif
 190
 191 #ifndef ATTR_FORMAT
 192 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 4 && defined (__ANSI_PROTOTYPES)
 193 #  define ATTR_FORMAT(type, x, y) __attribute__ ((format(type, x, y)))
 194 # else
 195 #  define ATTR_FORMAT(type, x, y) /* nothing */
 196 # endif
 197 #endif
 198
 199 /* Needed for various prototypes */
 200
 201 #ifdef __STDC__
 202 struct symtab;
 203 struct breakpoint;
 204 #endif
 205
 206 /* From blockframe.c */
 207
 208 extern int inside_entry_func PARAMS ((CORE_ADDR));
 209
 210 extern int inside_entry_file PARAMS ((CORE_ADDR addr));
 211
 212 extern int inside_main_func PARAMS ((CORE_ADDR pc));
 213
 214 /* From ch-lang.c, for the moment. (FIXME) */
 215
 216 extern char *chill_demangle PARAMS ((const char *));
 217
 218 /* From utils.c */
 219
 220 extern void notice_quit PARAMS ((void));
 221
 222 extern int strcmp_iw PARAMS ((const char *, const char *));
 223
 224 extern char *safe_strerror PARAMS ((int));
 225
 226 extern char *safe_strsignal PARAMS ((int));
 227
 228 extern void init_malloc PARAMS ((void *));
 229
 230 extern void request_quit PARAMS ((int));
 231
 232 extern void do_cleanups PARAMS ((struct cleanup *));
 233 extern void do_final_cleanups PARAMS ((struct cleanup *));
 234 extern void do_my_cleanups PARAMS ((struct cleanup *, struct cleanup *));
 235
 236 extern void discard_cleanups PARAMS ((struct cleanup *));
 237 extern void discard_final_cleanups PARAMS ((struct cleanup *));
 238 extern void discard_my_cleanups PARAMS ((struct cleanup *, struct cleanup *));
 239
 240 /* The bare make_cleanup function is one of those rare beasts that
 241    takes almost any type of function as the first arg and anything that
 242    will fit in a "void *" as the second arg.
 243
 244    Should be, once all calls and called-functions are cleaned up:
 245 extern struct cleanup *
 246 make_cleanup PARAMS ((void (*function) (void *), void *));
 247
 248    Until then, lint and/or various type-checking compiler options will
 249    complain about make_cleanup calls.  It'd be wrong to just cast things,
 250    since the type actually passed when the function is called would be
 251    wrong.  */
 252
 253 extern struct cleanup *make_cleanup ();
 254 extern struct cleanup *
 255 make_final_cleanup PARAMS ((void (*function) (void *), void *));
 256 extern struct cleanup *
 257 make_my_cleanup PARAMS ((struct cleanup *, void (*function) (void *), void *));
 258
 259 extern struct cleanup *save_cleanups PARAMS ((void));
 260 extern struct cleanup *save_final_cleanups PARAMS ((void));
 261 extern struct cleanup *save_my_cleanups PARAMS ((struct cleanup *));
 262
 263 extern void restore_cleanups PARAMS ((struct cleanup *));
 264 extern void restore_final_cleanups PARAMS ((struct cleanup *));
 265 extern void restore_my_cleanups PARAMS ((struct cleanup *, struct cleanup *));
 266
 267 extern void free_current_contents PARAMS ((char **));
 268
 269 extern void null_cleanup PARAMS ((PTR));
 270
 271 extern int myread PARAMS ((int, char *, int));
 272
 273 extern int query PARAMS((char *, ...))
 274      ATTR_FORMAT(printf, 1, 2);
 275
 276 /* From demangle.c */
 277
 278 extern void set_demangling_style PARAMS ((char *));
 279
 280 \f
 281 /* Annotation stuff.  */
 282
 283 extern int annotation_level; /* in stack.c */
 284 \f
 285 extern void begin_line PARAMS ((void));
 286
 287 extern void wrap_here PARAMS ((char *));
 288
 289 extern void reinitialize_more_filter PARAMS ((void));
 290
 291 typedef FILE GDB_FILE;
 292 #define gdb_stdout stdout
 293 #define gdb_stderr stderr
 294
 295 extern void gdb_flush PARAMS ((GDB_FILE *));
 296
 297 extern GDB_FILE *gdb_fopen PARAMS ((char * name, char * mode));
 298
 299 extern void fputs_filtered PARAMS ((const char *, GDB_FILE *));
 300
 301 extern void fputs_unfiltered PARAMS ((const char *, GDB_FILE *));
 302
 303 extern int fputc_unfiltered PARAMS ((int c, GDB_FILE *));
 304
 305 extern int putchar_unfiltered PARAMS ((int c));
 306
 307 extern void puts_filtered PARAMS ((const char *));
 308
 309 extern void puts_unfiltered PARAMS ((const char *));
 310
 311 extern void vprintf_filtered PARAMS ((const char *, va_list))
 312      ATTR_FORMAT(printf, 1, 0);
 313
 314 extern void vfprintf_filtered PARAMS ((FILE *, const char *, va_list))
 315      ATTR_FORMAT(printf, 2, 0);
 316
 317 extern void fprintf_filtered PARAMS ((FILE *, const char *, ...))
 318      ATTR_FORMAT(printf, 2, 3);
 319
 320 extern void fprintfi_filtered PARAMS ((int, FILE *, const char *, ...))
 321      ATTR_FORMAT(printf, 3, 4);
 322
 323 extern void printf_filtered PARAMS ((const char *, ...))
 324      ATTR_FORMAT(printf, 1, 2);
 325
 326 extern void printfi_filtered PARAMS ((int, const char *, ...))
 327      ATTR_FORMAT(printf, 2, 3);
 328
 329 extern void vprintf_unfiltered PARAMS ((const char *, va_list))
 330      ATTR_FORMAT(printf, 1, 0);
 331
 332 extern void vfprintf_unfiltered PARAMS ((FILE *, const char *, va_list))
 333      ATTR_FORMAT(printf, 2, 0);
 334
 335 extern void fprintf_unfiltered PARAMS ((FILE *, const char *, ...))
 336      ATTR_FORMAT(printf, 2, 3);
 337
 338 extern void printf_unfiltered PARAMS ((const char *, ...))
 339      ATTR_FORMAT(printf, 1, 2);
 340
 341 extern void print_spaces PARAMS ((int, GDB_FILE *));
 342
 343 extern void print_spaces_filtered PARAMS ((int, GDB_FILE *));
 344
 345 extern char *n_spaces PARAMS ((int));
 346
 347 extern void gdb_printchar PARAMS ((int, GDB_FILE *, int));
 348
 349 extern void gdb_print_address PARAMS ((void *, GDB_FILE *));
 350
 351 typedef bfd_vma t_addr;
 352 typedef bfd_vma t_reg;
 353 extern char* paddr PARAMS ((t_addr addr));
 354
 355 extern char* preg PARAMS ((t_reg reg));
 356
 357 extern char* paddr_nz PARAMS ((t_addr addr));
 358
 359 extern char* preg_nz PARAMS ((t_reg reg));
 360
 361 extern void fprintf_symbol_filtered PARAMS ((GDB_FILE *, char *,
 362                                              enum language, int));
 363
 364 extern void perror_with_name PARAMS ((char *));
 365
 366 extern void print_sys_errmsg PARAMS ((char *, int));
 367
 368 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 369    "const char *" in unistd.h, so we can't declare the argument
 370    as "char *".  */
 371
 372 extern char *re_comp PARAMS ((const char *));
 373
 374 /* From symfile.c */
 375
 376 extern void symbol_file_command PARAMS ((char *, int));
 377
 378 /* From top.c */
 379
 380 extern char *skip_quoted PARAMS ((char *));
 381
 382 extern char *gdb_readline PARAMS ((char *));
 383
 384 extern char *command_line_input PARAMS ((char *, int, char *));
 385
 386 extern void print_prompt PARAMS ((void));
 387
 388 extern int input_from_terminal_p PARAMS ((void));
 389
 390 extern int info_verbose;
 391
 392 /* From printcmd.c */
 393
 394 extern void set_next_address PARAMS ((CORE_ADDR));
 395
 396 extern void print_address_symbolic PARAMS ((CORE_ADDR, GDB_FILE *, int,
 397                                             char *));
 398
 399 extern void print_address_numeric PARAMS ((CORE_ADDR, int, GDB_FILE *));
 400
 401 extern void print_address PARAMS ((CORE_ADDR, GDB_FILE *));
 402
 403 /* From source.c */
 404
 405 extern int openp PARAMS ((char *, int, char *, int, int, char **));
 406
 407 extern void mod_path PARAMS ((char *, char **));
 408
 409 extern void directory_command PARAMS ((char *, int));
 410
 411 extern void init_source_path PARAMS ((void));
 412
 413 extern char *symtab_to_filename PARAMS ((struct symtab *));
 414
 415 /* From findvar.c */
 416
 417 extern int read_relative_register_raw_bytes PARAMS ((int, char *));
 418
 419 /* From readline (but not in any readline .h files).  */
 420
 421 extern char *tilde_expand PARAMS ((char *));
 422
 423 /* Control types for commands */
 424
 425 enum misc_command_type
 426 {
 427   ok_command,
 428   end_command,
 429   else_command,
 430   nop_command
 431 };
 432
 433 enum command_control_type
 434 {
 435   simple_control,
 436   break_control,
 437   continue_control,
 438   while_control,
 439   if_control,
 440   invalid_control
 441 };
 442
 443 /* Structure for saved commands lines
 444    (for breakpoints, defined commands, etc).  */
 445
 446 struct command_line
 447 {
 448   struct command_line *next;
 449   char *line;
 450   enum command_control_type control_type;
 451   int body_count;
 452   struct command_line **body_list;
 453 };
 454
 455 extern struct command_line *read_command_lines PARAMS ((char *, int));
 456
 457 extern void free_command_lines PARAMS ((struct command_line **));
 458
 459 /* String containing the current directory (what getwd would return).  */
 460
 461 extern char *current_directory;
 462
 463 /* Default radixes for input and output.  Only some values supported.  */
 464 extern unsigned input_radix;
 465 extern unsigned output_radix;
 466
 467 /* Possibilities for prettyprint parameters to routines which print
 468    things.  Like enum language, this should be in value.h, but needs
 469    to be here for the same reason.  FIXME:  If we can eliminate this
 470    as an arg to LA_VAL_PRINT, then we can probably move it back to
 471    value.h. */
 472
 473 enum val_prettyprint
 474 {
 475   Val_no_prettyprint = 0,
 476   Val_prettyprint,
 477   /* Use the default setting which the user has specified.  */
 478   Val_pretty_default
 479 };
 480
 481 \f
 482 /* Host machine definition.  This will be a symlink to one of the
 483    xm-*.h files, built by the `configure' script.  */
 484
 485 #include "xm.h"
 486
 487 /* Native machine support.  This will be a symlink to one of the
 488    nm-*.h files, built by the `configure' script.  */
 489
 490 #include "nm.h"
 491
 492 /* Target machine definition.  This will be a symlink to one of the
 493    tm-*.h files, built by the `configure' script.  */
 494
 495 #include "tm.h"
 496
 497 /* If the xm.h file did not define the mode string used to open the
 498    files, assume that binary files are opened the same way as text
 499    files */
 500 #ifndef FOPEN_RB
 501 #include "fopen-same.h"
 502 #endif
 503
 504 /* Microsoft C can't deal with const pointers */
 505
 506 #ifdef _MSC_VER
 507 #define CONST_PTR
 508 #else
 509 #define CONST_PTR const
 510 #endif
 511
 512 /*
 513  * Allow things in gdb to be declared "volatile".  If compiling ANSI, it
 514  * just works.  If compiling with gcc but non-ansi, redefine to __volatile__.
 515  * If non-ansi, non-gcc, then eliminate "volatile" entirely, making those
 516  * objects be read-write rather than read-only.
 517  */
 518
 519 #ifndef volatile
 520 #ifndef __STDC__
 521 # ifdef __GNUC__
 522 #  define volatile __volatile__
 523 # else
 524 #  define volatile /*nothing*/
 525 # endif /* GNUC */
 526 #endif /* STDC */
 527 #endif /* volatile */
 528
 529 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 530    FIXME: Assumes 2's complement arithmetic */
 531
 532 #if !defined (UINT_MAX)
 533 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 534 #endif
 535
 536 #if !defined (INT_MAX)
 537 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 538 #endif
 539
 540 #if !defined (INT_MIN)
 541 #define INT_MIN ((int)((int) ~0 ^ INT_MAX))     /* 0x80000000 for 32-bits */
 542 #endif
 543
 544 #if !defined (ULONG_MAX)
 545 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 546 #endif
 547
 548 #if !defined (LONG_MAX)
 549 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 550 #endif
 551
 552 #ifdef BFD64
 553
 554 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
 555
 556 #define LONGEST BFD_HOST_64_BIT
 557 #define ULONGEST BFD_HOST_U_64_BIT
 558
 559 #else /* No BFD64 */
 560
 561 #ifndef LONGEST
 562 #  ifdef CC_HAS_LONG_LONG
 563 #    define LONGEST long long
 564 #    define ULONGEST unsigned long long
 565 #  else
 566 #    define LONGEST long
 567 #    define ULONGEST unsigned long
 568 #  endif
 569 #endif
 570
 571 #endif /* No BFD64 */
 572
 573 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 574    arguments to a function, number in a value history, register number, etc.)
 575    where the value must not be larger than can fit in an int.  */
 576
 577 extern int longest_to_int PARAMS ((LONGEST));
 578
 579 /* Assorted functions we can declare, now that const and volatile are
 580    defined.  */
 581
 582 extern char *savestring PARAMS ((const char *, int));
 583
 584 extern char *msavestring PARAMS ((void *, const char *, int));
 585
 586 extern char *strsave PARAMS ((const char *));
 587
 588 extern char *mstrsave PARAMS ((void *, const char *));
 589
 590 #ifdef _MSC_VER /* FIXME; was long, but this causes compile errors in msvc if already defined */
 591 extern PTR xmmalloc PARAMS ((PTR, size_t));
 592
 593 extern PTR xmrealloc PARAMS ((PTR, PTR, size_t));
 594 #else
 595 extern PTR xmmalloc PARAMS ((PTR, long));
 596
 597 extern PTR xmrealloc PARAMS ((PTR, PTR, long));
 598 #endif
 599
 600 extern int parse_escape PARAMS ((char **));
 601
 602 extern char *reg_names[];
 603
 604 /* Message to be printed before the error message, when an error occurs.  */
 605
 606 extern char *error_pre_print;
 607
 608 /* Message to be printed before the error message, when an error occurs.  */
 609
 610 extern char *quit_pre_print;
 611
 612 /* Message to be printed before the warning message, when a warning occurs.  */
 613
 614 extern char *warning_pre_print;
 615
 616 extern NORETURN void error PARAMS((char *, ...)) ATTR_NORETURN;
 617
 618 extern void error_begin PARAMS ((void));
 619
 620 extern NORETURN void fatal PARAMS((char *, ...)) ATTR_NORETURN;
 621
 622 extern NORETURN void nomem PARAMS ((long)) ATTR_NORETURN;
 623
 624 /* Reasons for calling return_to_top_level.  */
 625 enum return_reason {
 626   /* User interrupt.  */
 627   RETURN_QUIT,
 628
 629   /* Any other error.  */
 630   RETURN_ERROR
 631 };
 632
 633 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 634 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 635 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 636 typedef int return_mask;
 637
 638 extern NORETURN void
 639 return_to_top_level PARAMS ((enum return_reason)) ATTR_NORETURN;
 640
 641 extern int
 642 catch_errors PARAMS ((int (*) (char *), void *, char *, return_mask));
 643
 644 extern void warning_begin PARAMS ((void));
 645
 646 extern void warning PARAMS ((char *, ...))
 647      ATTR_FORMAT(printf, 1, 2);
 648
 649 /* Global functions from other, non-gdb GNU thingies.
 650    Libiberty thingies are no longer declared here.  We include libiberty.h
 651    above, instead.  */
 652
 653 #ifndef GETENV_PROVIDED
 654 extern char *getenv PARAMS ((const char *));
 655 #endif
 656
 657 /* From other system libraries */
 658
 659 #ifdef HAVE_STDDEF_H
 660 #include <stddef.h>
 661 #endif
 662
 663 #ifdef HAVE_STDLIB_H
 664 #if defined(_MSC_VER) && !defined(__cplusplus)
 665 /* msvc defines these in stdlib.h for c code */
 666 #undef min
 667 #undef max
 668 #endif
 669 #include <stdlib.h>
 670 #endif
 671 #ifndef min
 672 #define min(a, b) ((a) < (b) ? (a) : (b))
 673 #endif
 674 #ifndef max
 675 #define max(a, b) ((a) > (b) ? (a) : (b))
 676 #endif
 677
 678
 679 /* We take the address of fclose later, but some stdio's forget
 680    to declare this.  We can't always declare it since there's
 681    no way to declare the parameters without upsetting some compiler
 682    somewhere. */
 683
 684 #ifndef FCLOSE_PROVIDED
 685 extern int fclose PARAMS ((FILE *));
 686 #endif
 687
 688 #ifndef atof
 689 extern double atof PARAMS ((const char *));     /* X3.159-1989  4.10.1.1 */
 690 #endif
 691
 692 #ifndef MALLOC_INCOMPATIBLE
 693
 694 #ifdef NEED_DECLARATION_MALLOC
 695 extern PTR malloc ();
 696 #endif
 697
 698 #ifdef NEED_DECLARATION_REALLOC
 699 extern PTR realloc ();
 700 #endif
 701
 702 #ifdef NEED_DECLARATION_FREE
 703 extern void free ();
 704 #endif
 705
 706 #endif /* MALLOC_INCOMPATIBLE */
 707
 708 /* Various possibilities for alloca.  */
 709 #ifndef alloca
 710 # ifdef __GNUC__
 711 #  define alloca __builtin_alloca
 712 # else /* Not GNU C */
 713 #  ifdef sparc
 714 #   include <alloca.h>          /* NOTE:  Doesn't declare alloca() */
 715 #  endif
 716
 717 /* We need to be careful not to declare this in a way which conflicts with
 718    bison.  Bison never declares it as char *, but under various circumstances
 719    (like __hpux) we need to use void *.  */
 720 #  if defined (__STDC__) || defined (__hpux)
 721    extern void *alloca ();
 722 #  else /* Don't use void *.  */
 723    extern char *alloca ();
 724 #  endif /* Don't use void *.  */
 725 # endif /* Not GNU C */
 726 #endif /* alloca not defined */
 727
 728 /* HOST_BYTE_ORDER must be defined to one of these.  */
 729
 730 #ifdef HAVE_ENDIAN_H
 731 #include <endian.h>
 732 #endif
 733
 734 #if !defined (BIG_ENDIAN)
 735 #define BIG_ENDIAN 4321
 736 #endif
 737
 738 #if !defined (LITTLE_ENDIAN)
 739 #define LITTLE_ENDIAN 1234
 740 #endif
 741
 742 /* Target-system-dependent parameters for GDB. */
 743
 744 #ifdef TARGET_BYTE_ORDER_SELECTABLE
 745 /* The target endianness is selectable at runtime.  Define
 746    TARGET_BYTE_ORDER to be a variable.  The user can use the `set
 747    endian' command to change it.  */
 748 #undef TARGET_BYTE_ORDER
 749 #define TARGET_BYTE_ORDER target_byte_order
 750 extern int target_byte_order;
 751 #endif
 752
 753 extern void set_endian_from_file PARAMS ((bfd *));
 754
 755 /* Number of bits in a char or unsigned char for the target machine.
 756    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 757 #if !defined (TARGET_CHAR_BIT)
 758 #define TARGET_CHAR_BIT 8
 759 #endif
 760
 761 /* Number of bits in a short or unsigned short for the target machine. */
 762 #if !defined (TARGET_SHORT_BIT)
 763 #define TARGET_SHORT_BIT (2 * TARGET_CHAR_BIT)
 764 #endif
 765
 766 /* Number of bits in an int or unsigned int for the target machine. */
 767 #if !defined (TARGET_INT_BIT)
 768 #define TARGET_INT_BIT (4 * TARGET_CHAR_BIT)
 769 #endif
 770
 771 /* Number of bits in a long or unsigned long for the target machine. */
 772 #if !defined (TARGET_LONG_BIT)
 773 #define TARGET_LONG_BIT (4 * TARGET_CHAR_BIT)
 774 #endif
 775
 776 /* Number of bits in a long long or unsigned long long for the target machine. */
 777 #if !defined (TARGET_LONG_LONG_BIT)
 778 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 779 #endif
 780
 781 /* Number of bits in a float for the target machine. */
 782 #if !defined (TARGET_FLOAT_BIT)
 783 #define TARGET_FLOAT_BIT (4 * TARGET_CHAR_BIT)
 784 #endif
 785
 786 /* Number of bits in a double for the target machine. */
 787 #if !defined (TARGET_DOUBLE_BIT)
 788 #define TARGET_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 789 #endif
 790
 791 /* Number of bits in a long double for the target machine.  */
 792 #if !defined (TARGET_LONG_DOUBLE_BIT)
 793 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 794 #endif
 795
 796 /* Number of bits in a pointer for the target machine */
 797 #if !defined (TARGET_PTR_BIT)
 798 #define TARGET_PTR_BIT TARGET_INT_BIT
 799 #endif
 800
 801 /* If we picked up a copy of CHAR_BIT from a configuration file
 802    (which may get it by including <limits.h>) then use it to set
 803    the number of bits in a host char.  If not, use the same size
 804    as the target. */
 805
 806 #if defined (CHAR_BIT)
 807 #define HOST_CHAR_BIT CHAR_BIT
 808 #else
 809 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 810 #endif
 811
 812 /* The bit byte-order has to do just with numbering of bits in
 813    debugging symbols and such.  Conceptually, it's quite separate
 814    from byte/word byte order.  */
 815
 816 #if !defined (BITS_BIG_ENDIAN)
 817 #ifndef TARGET_BYTE_ORDER_SELECTABLE
 818
 819 #if TARGET_BYTE_ORDER == BIG_ENDIAN
 820 #define BITS_BIG_ENDIAN 1
 821 #endif /* Big endian.  */
 822
 823 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
 824 #define BITS_BIG_ENDIAN 0
 825 #endif /* Little endian.  */
 826
 827 #else /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
 828
 829 #define BITS_BIG_ENDIAN (TARGET_BYTE_ORDER == BIG_ENDIAN)
 830
 831 #endif /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
 832 #endif /* BITS_BIG_ENDIAN not defined.  */
 833
 834 /* In findvar.c.  */
 835
 836 extern LONGEST extract_signed_integer PARAMS ((void *, int));
 837
 838 extern ULONGEST extract_unsigned_integer PARAMS ((void *, int));
 839
 840 extern int extract_long_unsigned_integer PARAMS ((void *, int, LONGEST *));
 841
 842 extern CORE_ADDR extract_address PARAMS ((void *, int));
 843
 844 extern void store_signed_integer PARAMS ((void *, int, LONGEST));
 845
 846 extern void store_unsigned_integer PARAMS ((void *, int, ULONGEST));
 847
 848 extern void store_address PARAMS ((void *, int, CORE_ADDR));
 849
 850 /* Setup definitions for host and target floating point formats.  We need to
 851    consider the format for `float', `double', and `long double' for both target
 852    and host.  We need to do this so that we know what kind of conversions need
 853    to be done when converting target numbers to and from the hosts DOUBLEST
 854    data type.  */
 855
 856 /* This is used to indicate that we don't know the format of the floating point
 857    number.  Typically, this is useful for native ports, where the actual format
 858    is irrelevant, since no conversions will be taking place.  */
 859
 860 extern const struct floatformat floatformat_unknown;
 861
 862 #if HOST_BYTE_ORDER == BIG_ENDIAN
 863 #  ifndef HOST_FLOAT_FORMAT
 864 #    define HOST_FLOAT_FORMAT &floatformat_ieee_single_big
 865 #  endif
 866 #  ifndef HOST_DOUBLE_FORMAT
 867 #    define HOST_DOUBLE_FORMAT &floatformat_ieee_double_big
 868 #  endif
 869 #else                           /* LITTLE_ENDIAN */
 870 #  ifndef HOST_FLOAT_FORMAT
 871 #    define HOST_FLOAT_FORMAT &floatformat_ieee_single_little
 872 #  endif
 873 #  ifndef HOST_DOUBLE_FORMAT
 874 #    define HOST_DOUBLE_FORMAT &floatformat_ieee_double_little
 875 #  endif
 876 #endif
 877
 878 #ifndef HOST_LONG_DOUBLE_FORMAT
 879 #define HOST_LONG_DOUBLE_FORMAT &floatformat_unknown
 880 #endif
 881
 882 #ifndef TARGET_BYTE_ORDER_SELECTABLE
 883 #  if TARGET_BYTE_ORDER == BIG_ENDIAN
 884 #    ifndef TARGET_FLOAT_FORMAT
 885 #      define TARGET_FLOAT_FORMAT &floatformat_ieee_single_big
 886 #    endif
 887 #    ifndef TARGET_DOUBLE_FORMAT
 888 #      define TARGET_DOUBLE_FORMAT &floatformat_ieee_double_big
 889 #    endif
 890 #  else /* LITTLE_ENDIAN */
 891 #    ifndef TARGET_FLOAT_FORMAT
 892 #      define TARGET_FLOAT_FORMAT &floatformat_ieee_single_little
 893 #    endif
 894 #    ifndef TARGET_DOUBLE_FORMAT
 895 #      define TARGET_DOUBLE_FORMAT &floatformat_ieee_double_little
 896 #    endif
 897 #  endif
 898 #else                           /* TARGET_BYTE_ORDER_SELECTABLE */
 899 #  ifndef TARGET_FLOAT_FORMAT
 900 #    define TARGET_FLOAT_FORMAT (target_byte_order == BIG_ENDIAN \
 901                                  ? &floatformat_ieee_single_big \
 902                                  : &floatformat_ieee_single_little)
 903 #  endif
 904 #  ifndef TARGET_DOUBLE_FORMAT
 905 #    define TARGET_DOUBLE_FORMAT (target_byte_order == BIG_ENDIAN \
 906                                   ? &floatformat_ieee_double_big \
 907                                   : &floatformat_ieee_double_little)
 908 #  endif
 909 #endif
 910
 911 #ifndef TARGET_LONG_DOUBLE_FORMAT
 912 #  define TARGET_LONG_DOUBLE_FORMAT &floatformat_unknown
 913 #endif
 914
 915 /* Use `long double' if the host compiler supports it.  (Note that this is not
 916    necessarily any longer than `double'.  On SunOS/gcc, it's the same as
 917    double.)  This is necessary because GDB internally converts all floating
 918    point values to the widest type supported by the host.
 919
 920    There are problems however, when the target `long double' is longer than the
 921    host's `long double'.  In general, we'll probably reduce the precision of
 922    any such values and print a warning.  */
 923
 924 #ifdef HAVE_LONG_DOUBLE
 925 typedef long double DOUBLEST;
 926 #else
 927 typedef double DOUBLEST;
 928 #endif
 929
 930 extern void floatformat_to_doublest PARAMS ((const struct floatformat *,
 931                                              char *, DOUBLEST *));
 932 extern void floatformat_from_doublest PARAMS ((const struct floatformat *,
 933                                                DOUBLEST *, char *));
 934 extern DOUBLEST extract_floating PARAMS ((void *, int));
 935
 936 extern void store_floating PARAMS ((void *, int, DOUBLEST));
 937 \f
 938 /* On some machines there are bits in addresses which are not really
 939    part of the address, but are used by the kernel, the hardware, etc.
 940    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
 941    so we get a "real" address such as one would find in a symbol
 942    table.  This is used only for addresses of instructions, and even then
 943    I'm not sure it's used in all contexts.  It exists to deal with there
 944    being a few stray bits in the PC which would mislead us, not as some sort
 945    of generic thing to handle alignment or segmentation (it's possible it
 946    should be in TARGET_READ_PC instead).  */
 947 #if !defined (ADDR_BITS_REMOVE)
 948 #define ADDR_BITS_REMOVE(addr) (addr)
 949 #endif /* No ADDR_BITS_REMOVE.  */
 950
 951 /* From valops.c */
 952
 953 extern CORE_ADDR push_bytes PARAMS ((CORE_ADDR, char *, int));
 954
 955 extern CORE_ADDR push_word PARAMS ((CORE_ADDR, ULONGEST));
 956
 957 /* Some parts of gdb might be considered optional, in the sense that they
 958    are not essential for being able to build a working, usable debugger
 959    for a specific environment.  For example, the maintenance commands
 960    are there for the benefit of gdb maintainers.  As another example,
 961    some environments really don't need gdb's that are able to read N
 962    different object file formats.  In order to make it possible (but
 963    not necessarily recommended) to build "stripped down" versions of
 964    gdb, the following defines control selective compilation of those
 965    parts of gdb which can be safely left out when necessary.  Note that
 966    the default is to include everything. */
 967
 968 #ifndef MAINTENANCE_CMDS
 969 #define MAINTENANCE_CMDS 1
 970 #endif
 971
 972 #ifdef MAINTENANCE_CMDS
 973 extern int watchdog;
 974 #endif
 975
 976 #include "dis-asm.h"            /* Get defs for disassemble_info */
 977
 978 extern int dis_asm_read_memory PARAMS ((bfd_vma memaddr, bfd_byte *myaddr,
 979                                         int len, disassemble_info *info));
 980
 981 extern void dis_asm_memory_error PARAMS ((int status, bfd_vma memaddr,
 982                                           disassemble_info *info));
 983
 984 extern void dis_asm_print_address PARAMS ((bfd_vma addr,
 985                                            disassemble_info *info));
 986
 987 extern int (*tm_print_insn) PARAMS ((bfd_vma, disassemble_info*));
 988 extern disassemble_info tm_print_insn_info;
 989
 990 /* Hooks for alternate command interfaces.  */
 991
 992 #ifdef __STDC__
 993 struct target_waitstatus;
 994 struct cmd_list_element;
 995 #endif
 996
 997 extern void (*init_ui_hook) PARAMS ((void));
 998 extern void (*command_loop_hook) PARAMS ((void));
 999 extern void (*fputs_unfiltered_hook) PARAMS ((const char *linebuffer,
1000                                               FILE *stream));
1001 extern void (*print_frame_info_listing_hook) PARAMS ((struct symtab *s,
1002                                                       int line, int stopline,
1003                                                       int noerror));
1004 extern int (*query_hook) PARAMS ((const char *, va_list));
1005 extern void (*flush_hook) PARAMS ((FILE *stream));
1006 extern void (*create_breakpoint_hook) PARAMS ((struct breakpoint *b));
1007 extern void (*delete_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
1008 extern void (*modify_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
1009 extern void (*target_output_hook) PARAMS ((char *));
1010 extern void (*interactive_hook) PARAMS ((void));
1011 extern void (*registers_changed_hook) PARAMS ((void));
1012 extern void (*readline_begin_hook) PARAMS ((char *, ...));
1013 extern char * (*readline_hook) PARAMS ((char *));
1014 extern void (*readline_end_hook) PARAMS ((void));
1015
1016 extern int (*target_wait_hook) PARAMS ((int pid,
1017                                         struct target_waitstatus *status));
1018
1019 extern void (*call_command_hook) PARAMS ((struct cmd_list_element *c,
1020                                           char *cmd, int from_tty));
1021
1022 extern NORETURN void (*error_hook) PARAMS ((void)) ATTR_NORETURN;
1023
1024
1025
1026 /* Inhibit window interface if non-zero. */
1027
1028 extern int use_windows;
1029
1030 /* Symbolic definitions of filename-related things.  */
1031 /* FIXME, this doesn't work very well if host and executable
1032    filesystems conventions are different.  */
1033
1034 #ifndef DIRNAME_SEPARATOR
1035 #define DIRNAME_SEPARATOR ':'
1036 #endif
1037
1038 #ifndef SLASH_P
1039 #if defined(__GO32__)||defined(_WIN32)
1040 #define SLASH_P(X) ((X)=='\\')
1041 #else
1042 #define SLASH_P(X) ((X)=='/')
1043 #endif
1044 #endif
1045
1046 #ifndef SLASH_CHAR
1047 #if defined(__GO32__)||defined(_WIN32)
1048 #define SLASH_CHAR '\\'
1049 #else
1050 #define SLASH_CHAR '/'
1051 #endif
1052 #endif
1053
1054 #ifndef SLASH_STRING
1055 #if defined(__GO32__)||defined(_WIN32)
1056 #define SLASH_STRING "\\"
1057 #else
1058 #define SLASH_STRING "/"
1059 #endif
1060 #endif
1061
1062 #ifndef ROOTED_P
1063 #define ROOTED_P(X) (SLASH_P((X)[0]))
1064 #endif
1065
1066 /* On some systems, PIDGET is defined to extract the inferior pid from
1067    an internal pid that has the thread id and pid in seperate bit
1068    fields.  If not defined, then just use the entire internal pid as
1069    the actual pid. */
1070
1071 #ifndef PIDGET
1072 #define PIDGET(pid) (pid)
1073 #endif
1074
1075 #endif /* #ifndef DEFS_H */