gdb/defs.h

   1 /* Basic, host-specific, and target-specific definitions for GDB.
   2    Copyright (C) 1986, 89, 91, 92, 93, 94, 95, 96, 1998
   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 #ifdef HAVE_STDDEF_H
  29 #  include <stddef.h>
  30 #else
  31 #  include <sys/types.h>   /* for size_t */
  32 #endif
  33
  34 /* Just in case they're not defined in stdio.h. */
  35
  36 #ifndef SEEK_SET
  37 #define SEEK_SET 0
  38 #endif
  39 #ifndef SEEK_CUR
  40 #define SEEK_CUR 1
  41 #endif
  42
  43 /* First include ansidecl.h so we can use the various macro definitions
  44    here and in all subsequent file inclusions.  */
  45
  46 #include "ansidecl.h"
  47
  48 #ifdef ANSI_PROTOTYPES
  49 #include <stdarg.h>
  50 #else
  51 #include <varargs.h>
  52 #endif
  53
  54 #include "libiberty.h"
  55
  56 /* libiberty.h can't declare this one, but evidently we can.  */
  57 extern char *strsignal PARAMS ((int));
  58
  59 #include "progress.h"
  60
  61 #ifdef USE_MMALLOC
  62 #include "mmalloc.h"
  63 #endif
  64
  65 /* For BFD64 and bfd_vma.  */
  66 #include "bfd.h"
  67
  68 /* An address in the program being debugged.  Host byte order.  Rather
  69    than duplicate all the logic in BFD which figures out what type
  70    this is (long, long long, etc.) and whether it needs to be 64
  71    bits (the host/target interactions are subtle), we just use
  72    bfd_vma.  */
  73
  74 typedef bfd_vma CORE_ADDR;
  75
  76 #ifndef min
  77 #define min(a, b) ((a) < (b) ? (a) : (b))
  78 #endif
  79 #ifndef max
  80 #define max(a, b) ((a) > (b) ? (a) : (b))
  81 #endif
  82
  83 /* Gdb does *lots* of string compares.  Use macros to speed them up by
  84    avoiding function calls if the first characters are not the same. */
  85
  86 #define STRCMP(a,b) (*(a) == *(b) ? strcmp ((a), (b)) : (int)*(a) - (int)*(b))
  87 #define STREQ(a,b) (*(a) == *(b) ? !strcmp ((a), (b)) : 0)
  88 #define STREQN(a,b,c) (*(a) == *(b) ? !strncmp ((a), (b), (c)) : 0)
  89
  90 /* The character GNU C++ uses to build identifiers that must be unique from
  91    the program's identifiers (such as $this and $$vptr).  */
  92 #define CPLUS_MARKER '$'        /* May be overridden to '.' for SysV */
  93
  94 /* Check if a character is one of the commonly used C++ marker characters.  */
  95 extern int is_cplus_marker PARAMS ((int));
  96
  97 extern int quit_flag;
  98 extern int immediate_quit;
  99 extern int sevenbit_strings;
 100
 101 extern void quit PARAMS ((void));
 102
 103 #ifdef QUIT
 104 /* do twice to force compiler warning */
 105 #define QUIT_FIXME "FIXME"
 106 #define QUIT_FIXME "ignoring redefinition of QUIT"
 107 #else
 108 #define QUIT { \
 109   if (quit_flag) quit (); \
 110   if (interactive_hook) interactive_hook (); \
 111   PROGRESS (1); \
 112 }
 113 #endif
 114
 115 /* Command classes are top-level categories into which commands are broken
 116    down for "help" purposes.
 117    Notes on classes: class_alias is for alias commands which are not
 118    abbreviations of the original command.  class-pseudo is for commands
 119    which are not really commands nor help topics ("stop").  */
 120
 121 enum command_class
 122 {
 123   /* Special args to help_list */
 124   all_classes = -2, all_commands = -1,
 125   /* Classes of commands */
 126   no_class = -1, class_run = 0, class_vars, class_stack,
 127   class_files, class_support, class_info, class_breakpoint, class_trace,
 128   class_alias, class_obscure, class_user, class_maintenance,
 129   class_pseudo
 130 };
 131
 132 /* Languages represented in the symbol table and elsewhere.
 133    This should probably be in language.h, but since enum's can't
 134    be forward declared to satisfy opaque references before their
 135    actual definition, needs to be here. */
 136
 137 enum language
 138 {
 139    language_unknown,            /* Language not known */
 140    language_auto,               /* Placeholder for automatic setting */
 141    language_c,                  /* C */
 142    language_cplus,              /* C++ */
 143    /* start-sanitize-java */
 144    language_java,               /* Java */
 145    /* end-sanitize-java */
 146    language_chill,              /* Chill */
 147    language_fortran,            /* Fortran */
 148    language_m2,                 /* Modula-2 */
 149    language_asm,                /* Assembly language */
 150    language_scm                 /* Scheme / Guile */
 151 };
 152
 153 /* the cleanup list records things that have to be undone
 154    if an error happens (descriptors to be closed, memory to be freed, etc.)
 155    Each link in the chain records a function to call and an
 156    argument to give it.
 157
 158    Use make_cleanup to add an element to the cleanup chain.
 159    Use do_cleanups to do all cleanup actions back to a given
 160    point in the chain.  Use discard_cleanups to remove cleanups
 161    from the chain back to a given point, not doing them.  */
 162
 163 struct cleanup
 164 {
 165   struct cleanup *next;
 166   void (*function) PARAMS ((PTR));
 167   PTR arg;
 168 };
 169
 170
 171 /* The ability to declare that a function never returns is useful, but
 172    not really required to compile GDB successfully, so the NORETURN and
 173    ATTR_NORETURN macros normally expand into nothing.  */
 174
 175 /* If compiling with older versions of GCC, a function may be declared
 176    "volatile" to indicate that it does not return.  */
 177
 178 #ifndef NORETURN
 179 # if defined(__GNUC__) \
 180      && (__GNUC__ == 1 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7))
 181 #  define NORETURN volatile
 182 # else
 183 #  define NORETURN /* nothing */
 184 # endif
 185 #endif
 186
 187 /* GCC 2.5 and later versions define a function attribute "noreturn",
 188    which is the preferred way to declare that a function never returns.
 189    However GCC 2.7 appears to be the first version in which this fully
 190    works everywhere we use it. */
 191
 192 #ifndef ATTR_NORETURN
 193 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 7
 194 #  define ATTR_NORETURN __attribute__ ((noreturn))
 195 # else
 196 #  define ATTR_NORETURN /* nothing */
 197 # endif
 198 #endif
 199
 200 #ifndef ATTR_FORMAT
 201 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 4 && defined (__ANSI_PROTOTYPES)
 202 #  define ATTR_FORMAT(type, x, y) __attribute__ ((format(type, x, y)))
 203 # else
 204 #  define ATTR_FORMAT(type, x, y) /* nothing */
 205 # endif
 206 #endif
 207
 208 /* Needed for various prototypes */
 209
 210 #ifdef __STDC__
 211 struct symtab;
 212 struct breakpoint;
 213 #endif
 214
 215 /* From blockframe.c */
 216
 217 extern int inside_entry_func PARAMS ((CORE_ADDR));
 218
 219 extern int inside_entry_file PARAMS ((CORE_ADDR addr));
 220
 221 extern int inside_main_func PARAMS ((CORE_ADDR pc));
 222
 223 /* From ch-lang.c, for the moment. (FIXME) */
 224
 225 extern char *chill_demangle PARAMS ((const char *));
 226
 227 /* From utils.c */
 228
 229 extern void notice_quit PARAMS ((void));
 230
 231 extern int strcmp_iw PARAMS ((const char *, const char *));
 232
 233 extern char *safe_strerror PARAMS ((int));
 234
 235 extern char *safe_strsignal PARAMS ((int));
 236
 237 extern void init_malloc PARAMS ((void *));
 238
 239 extern void request_quit PARAMS ((int));
 240
 241 extern void do_cleanups PARAMS ((struct cleanup *));
 242 extern void do_final_cleanups PARAMS ((struct cleanup *));
 243 extern void do_my_cleanups PARAMS ((struct cleanup **, struct cleanup *));
 244 extern void do_run_cleanups PARAMS ((struct cleanup *));
 245
 246 extern void discard_cleanups PARAMS ((struct cleanup *));
 247 extern void discard_final_cleanups PARAMS ((struct cleanup *));
 248 extern void discard_my_cleanups PARAMS ((struct cleanup **, struct cleanup *));
 249
 250 typedef void (*make_cleanup_func) (void *);
 251
 252 extern struct cleanup *make_cleanup PARAMS ((make_cleanup_func, void *));
 253
 254 extern struct cleanup *make_final_cleanup PARAMS ((make_cleanup_func, void *));
 255
 256 extern struct cleanup *make_my_cleanup PARAMS ((struct cleanup **,
 257                                                 make_cleanup_func, void *));
 258
 259 extern struct cleanup *make_run_cleanup PARAMS ((make_cleanup_func, void *));
 260
 261 extern struct cleanup *save_cleanups PARAMS ((void));
 262 extern struct cleanup *save_final_cleanups PARAMS ((void));
 263 extern struct cleanup *save_my_cleanups PARAMS ((struct cleanup **));
 264
 265 extern void restore_cleanups PARAMS ((struct cleanup *));
 266 extern void restore_final_cleanups PARAMS ((struct cleanup *));
 267 extern void restore_my_cleanups PARAMS ((struct cleanup **, struct cleanup *));
 268
 269 extern void free_current_contents PARAMS ((char **));
 270
 271 extern void null_cleanup PARAMS ((PTR));
 272
 273 extern int myread PARAMS ((int, char *, int));
 274
 275 extern int query PARAMS((char *, ...))
 276      ATTR_FORMAT(printf, 1, 2);
 277
 278 #if !defined (USE_MMALLOC)
 279 extern PTR mmalloc PARAMS ((PTR, size_t));
 280 extern PTR mrealloc PARAMS ((PTR, PTR, size_t));
 281 extern void mfree PARAMS ((PTR, PTR));
 282 #endif
 283
 284 /* From demangle.c */
 285
 286 extern void set_demangling_style PARAMS ((char *));
 287
 288 \f
 289 /* Annotation stuff.  */
 290
 291 extern int annotation_level; /* in stack.c */
 292 \f
 293 extern void begin_line PARAMS ((void));
 294
 295 extern void wrap_here PARAMS ((char *));
 296
 297 extern void reinitialize_more_filter PARAMS ((void));
 298
 299 typedef FILE GDB_FILE;
 300 #define gdb_stdout stdout
 301 #define gdb_stderr stderr
 302
 303 extern void gdb_flush PARAMS ((GDB_FILE *));
 304
 305 extern GDB_FILE *gdb_fopen PARAMS ((char * name, char * mode));
 306
 307 extern void fputs_filtered PARAMS ((const char *, GDB_FILE *));
 308
 309 extern void fputs_unfiltered PARAMS ((const char *, GDB_FILE *));
 310
 311 extern int fputc_filtered PARAMS ((int c, GDB_FILE *));
 312
 313 extern int fputc_unfiltered PARAMS ((int c, GDB_FILE *));
 314
 315 extern int putchar_unfiltered PARAMS ((int c));
 316
 317 extern void puts_filtered PARAMS ((const char *));
 318
 319 extern void puts_unfiltered PARAMS ((const char *));
 320
 321 extern void puts_debug PARAMS ((char *prefix, char *string, char *suffix));
 322
 323 extern void vprintf_filtered PARAMS ((const char *, va_list))
 324      ATTR_FORMAT(printf, 1, 0);
 325
 326 extern void vfprintf_filtered PARAMS ((FILE *, const char *, va_list))
 327      ATTR_FORMAT(printf, 2, 0);
 328
 329 extern void fprintf_filtered PARAMS ((FILE *, const char *, ...))
 330      ATTR_FORMAT(printf, 2, 3);
 331
 332 extern void fprintfi_filtered PARAMS ((int, FILE *, const char *, ...))
 333      ATTR_FORMAT(printf, 3, 4);
 334
 335 extern void printf_filtered PARAMS ((const char *, ...))
 336      ATTR_FORMAT(printf, 1, 2);
 337
 338 extern void printfi_filtered PARAMS ((int, const char *, ...))
 339      ATTR_FORMAT(printf, 2, 3);
 340
 341 extern void vprintf_unfiltered PARAMS ((const char *, va_list))
 342      ATTR_FORMAT(printf, 1, 0);
 343
 344 extern void vfprintf_unfiltered PARAMS ((FILE *, const char *, va_list))
 345      ATTR_FORMAT(printf, 2, 0);
 346
 347 extern void fprintf_unfiltered PARAMS ((FILE *, const char *, ...))
 348      ATTR_FORMAT(printf, 2, 3);
 349
 350 extern void printf_unfiltered PARAMS ((const char *, ...))
 351      ATTR_FORMAT(printf, 1, 2);
 352
 353 extern void print_spaces PARAMS ((int, GDB_FILE *));
 354
 355 extern void print_spaces_filtered PARAMS ((int, GDB_FILE *));
 356
 357 extern char *n_spaces PARAMS ((int));
 358
 359 extern void gdb_printchar PARAMS ((int, GDB_FILE *, int));
 360
 361 extern void gdb_print_address PARAMS ((void *, GDB_FILE *));
 362
 363 typedef bfd_vma t_addr;
 364 typedef bfd_vma t_reg;
 365 extern char* paddr PARAMS ((t_addr addr));
 366
 367 extern char* preg PARAMS ((t_reg reg));
 368
 369 extern char* paddr_nz PARAMS ((t_addr addr));
 370
 371 extern char* preg_nz PARAMS ((t_reg reg));
 372
 373 extern void fprintf_symbol_filtered PARAMS ((GDB_FILE *, char *,
 374                                              enum language, int));
 375
 376 extern NORETURN void perror_with_name PARAMS ((char *)) ATTR_NORETURN;
 377
 378 extern void print_sys_errmsg PARAMS ((char *, int));
 379
 380 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 381    "const char *" in unistd.h, so we can't declare the argument
 382    as "char *".  */
 383
 384 extern char *re_comp PARAMS ((const char *));
 385
 386 /* From symfile.c */
 387
 388 extern void symbol_file_command PARAMS ((char *, int));
 389
 390 /* From top.c */
 391
 392 extern char *skip_quoted PARAMS ((char *));
 393
 394 extern char *gdb_readline PARAMS ((char *));
 395
 396 extern char *command_line_input PARAMS ((char *, int, char *));
 397
 398 extern void print_prompt PARAMS ((void));
 399
 400 extern int input_from_terminal_p PARAMS ((void));
 401
 402 extern int info_verbose;
 403
 404 /* From printcmd.c */
 405
 406 extern void set_next_address PARAMS ((CORE_ADDR));
 407
 408 extern void print_address_symbolic PARAMS ((CORE_ADDR, GDB_FILE *, int,
 409                                             char *));
 410
 411 extern void print_address_numeric PARAMS ((CORE_ADDR, int, GDB_FILE *));
 412
 413 extern void print_address PARAMS ((CORE_ADDR, GDB_FILE *));
 414
 415 /* From source.c */
 416
 417 extern int openp PARAMS ((char *, int, char *, int, int, char **));
 418
 419 extern void mod_path PARAMS ((char *, char **));
 420
 421 extern void directory_command PARAMS ((char *, int));
 422
 423 extern void init_source_path PARAMS ((void));
 424
 425 extern char *symtab_to_filename PARAMS ((struct symtab *));
 426
 427 /* From findvar.c */
 428
 429 extern int read_relative_register_raw_bytes PARAMS ((int, char *));
 430
 431 /* From readline (but not in any readline .h files).  */
 432
 433 extern char *tilde_expand PARAMS ((char *));
 434
 435 /* Control types for commands */
 436
 437 enum misc_command_type
 438 {
 439   ok_command,
 440   end_command,
 441   else_command,
 442   nop_command
 443 };
 444
 445 enum command_control_type
 446 {
 447   simple_control,
 448   break_control,
 449   continue_control,
 450   while_control,
 451   if_control,
 452   invalid_control
 453 };
 454
 455 /* Structure for saved commands lines
 456    (for breakpoints, defined commands, etc).  */
 457
 458 struct command_line
 459 {
 460   struct command_line *next;
 461   char *line;
 462   enum command_control_type control_type;
 463   int body_count;
 464   struct command_line **body_list;
 465 };
 466
 467 extern struct command_line *read_command_lines PARAMS ((char *, int));
 468
 469 extern void free_command_lines PARAMS ((struct command_line **));
 470
 471 /* String containing the current directory (what getwd would return).  */
 472
 473 extern char *current_directory;
 474
 475 /* Default radixes for input and output.  Only some values supported.  */
 476 extern unsigned input_radix;
 477 extern unsigned output_radix;
 478
 479 /* Possibilities for prettyprint parameters to routines which print
 480    things.  Like enum language, this should be in value.h, but needs
 481    to be here for the same reason.  FIXME:  If we can eliminate this
 482    as an arg to LA_VAL_PRINT, then we can probably move it back to
 483    value.h. */
 484
 485 enum val_prettyprint
 486 {
 487   Val_no_prettyprint = 0,
 488   Val_prettyprint,
 489   /* Use the default setting which the user has specified.  */
 490   Val_pretty_default
 491 };
 492
 493 \f
 494 /* Host machine definition.  This will be a symlink to one of the
 495    xm-*.h files, built by the `configure' script.  */
 496
 497 #include "xm.h"
 498
 499 /* Native machine support.  This will be a symlink to one of the
 500    nm-*.h files, built by the `configure' script.  */
 501
 502 #include "nm.h"
 503
 504 /* Target machine definition.  This will be a symlink to one of the
 505    tm-*.h files, built by the `configure' script.  */
 506
 507 #include "tm.h"
 508
 509 /* If the xm.h file did not define the mode string used to open the
 510    files, assume that binary files are opened the same way as text
 511    files */
 512 #ifndef FOPEN_RB
 513 #include "fopen-same.h"
 514 #endif
 515
 516 /* Microsoft C can't deal with const pointers */
 517
 518 #ifdef _MSC_VER
 519 #define CONST_PTR
 520 #else
 521 #define CONST_PTR const
 522 #endif
 523
 524 /*
 525  * Allow things in gdb to be declared "volatile".  If compiling ANSI, it
 526  * just works.  If compiling with gcc but non-ansi, redefine to __volatile__.
 527  * If non-ansi, non-gcc, then eliminate "volatile" entirely, making those
 528  * objects be read-write rather than read-only.
 529  */
 530
 531 #ifndef volatile
 532 #ifndef __STDC__
 533 # ifdef __GNUC__
 534 #  define volatile __volatile__
 535 # else
 536 #  define volatile /*nothing*/
 537 # endif /* GNUC */
 538 #endif /* STDC */
 539 #endif /* volatile */
 540
 541 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 542    FIXME: Assumes 2's complement arithmetic */
 543
 544 #if !defined (UINT_MAX)
 545 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 546 #endif
 547
 548 #if !defined (INT_MAX)
 549 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 550 #endif
 551
 552 #if !defined (INT_MIN)
 553 #define INT_MIN ((int)((int) ~0 ^ INT_MAX))     /* 0x80000000 for 32-bits */
 554 #endif
 555
 556 #if !defined (ULONG_MAX)
 557 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 558 #endif
 559
 560 #if !defined (LONG_MAX)
 561 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 562 #endif
 563
 564 #ifndef LONGEST
 565
 566 #ifdef BFD64
 567
 568 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
 569
 570 #define LONGEST BFD_HOST_64_BIT
 571 #define ULONGEST BFD_HOST_U_64_BIT
 572
 573 #else /* No BFD64 */
 574
 575 #  ifdef CC_HAS_LONG_LONG
 576 #    define LONGEST long long
 577 #    define ULONGEST unsigned long long
 578 #  else
 579 /* BFD_HOST_64_BIT is defined for some hosts that don't have long long
 580    (e.g. i386-windows) so try it.  */
 581 #    ifdef BFD_HOST_64_BIT
 582 #      define LONGEST BFD_HOST_64_BIT
 583 #      define ULONGEST BFD_HOST_U_64_BIT
 584 #    else
 585 #      define LONGEST long
 586 #      define ULONGEST unsigned long
 587 #    endif
 588 #  endif
 589
 590 #endif /* No BFD64 */
 591
 592 #endif /* ! LONGEST */
 593
 594 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 595    arguments to a function, number in a value history, register number, etc.)
 596    where the value must not be larger than can fit in an int.  */
 597
 598 extern int longest_to_int PARAMS ((LONGEST));
 599
 600 /* Assorted functions we can declare, now that const and volatile are
 601    defined.  */
 602
 603 extern char *savestring PARAMS ((const char *, int));
 604
 605 extern char *msavestring PARAMS ((void *, const char *, int));
 606
 607 extern char *strsave PARAMS ((const char *));
 608
 609 extern char *mstrsave PARAMS ((void *, const char *));
 610
 611 #ifdef _MSC_VER /* FIXME; was long, but this causes compile errors in msvc if already defined */
 612 extern PTR xmmalloc PARAMS ((PTR, size_t));
 613
 614 extern PTR xmrealloc PARAMS ((PTR, PTR, size_t));
 615 #else
 616 extern PTR xmmalloc PARAMS ((PTR, long));
 617
 618 extern PTR xmrealloc PARAMS ((PTR, PTR, long));
 619 #endif
 620
 621 extern int parse_escape PARAMS ((char **));
 622
 623 extern char *reg_names[];
 624
 625 /* Message to be printed before the error message, when an error occurs.  */
 626
 627 extern char *error_pre_print;
 628
 629 /* Message to be printed before the error message, when an error occurs.  */
 630
 631 extern char *quit_pre_print;
 632
 633 /* Message to be printed before the warning message, when a warning occurs.  */
 634
 635 extern char *warning_pre_print;
 636
 637 extern NORETURN void error PARAMS((const char *, ...)) ATTR_NORETURN;
 638
 639 extern void error_begin PARAMS ((void));
 640
 641 extern NORETURN void fatal PARAMS((char *, ...)) ATTR_NORETURN;
 642
 643 extern NORETURN void nomem PARAMS ((long)) ATTR_NORETURN;
 644
 645 /* Reasons for calling return_to_top_level.  */
 646 enum return_reason {
 647   /* User interrupt.  */
 648   RETURN_QUIT,
 649
 650   /* Any other error.  */
 651   RETURN_ERROR
 652 };
 653
 654 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 655 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 656 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 657 typedef int return_mask;
 658
 659 extern NORETURN void
 660 return_to_top_level PARAMS ((enum return_reason)) ATTR_NORETURN;
 661
 662 extern int
 663 catch_errors PARAMS ((int (*) (char *), void *, char *, return_mask));
 664
 665 extern void warning_begin PARAMS ((void));
 666
 667 extern void warning PARAMS ((const char *, ...))
 668      ATTR_FORMAT(printf, 1, 2);
 669
 670 /* Global functions from other, non-gdb GNU thingies.
 671    Libiberty thingies are no longer declared here.  We include libiberty.h
 672    above, instead.  */
 673
 674 #ifndef GETENV_PROVIDED
 675 extern char *getenv PARAMS ((const char *));
 676 #endif
 677
 678 /* From other system libraries */
 679
 680 #ifdef HAVE_STDDEF_H
 681 #include <stddef.h>
 682 #endif
 683
 684 #ifdef HAVE_STDLIB_H
 685 #if defined(_MSC_VER) && !defined(__cplusplus)
 686 /* msvc defines these in stdlib.h for c code */
 687 #undef min
 688 #undef max
 689 #endif
 690 #include <stdlib.h>
 691 #endif
 692 #ifndef min
 693 #define min(a, b) ((a) < (b) ? (a) : (b))
 694 #endif
 695 #ifndef max
 696 #define max(a, b) ((a) > (b) ? (a) : (b))
 697 #endif
 698
 699
 700 /* We take the address of fclose later, but some stdio's forget
 701    to declare this.  We can't always declare it since there's
 702    no way to declare the parameters without upsetting some compiler
 703    somewhere. */
 704
 705 #ifndef FCLOSE_PROVIDED
 706 extern int fclose PARAMS ((FILE *));
 707 #endif
 708
 709 #ifndef atof
 710 extern double atof PARAMS ((const char *));     /* X3.159-1989  4.10.1.1 */
 711 #endif
 712
 713 #ifndef MALLOC_INCOMPATIBLE
 714
 715 #ifdef NEED_DECLARATION_MALLOC
 716 extern PTR malloc ();
 717 #endif
 718
 719 #ifdef NEED_DECLARATION_REALLOC
 720 extern PTR realloc ();
 721 #endif
 722
 723 #ifdef NEED_DECLARATION_FREE
 724 extern void free ();
 725 #endif
 726
 727 #endif /* MALLOC_INCOMPATIBLE */
 728
 729 /* Various possibilities for alloca.  */
 730 #ifndef alloca
 731 # ifdef __GNUC__
 732 #  define alloca __builtin_alloca
 733 # else /* Not GNU C */
 734 #  ifdef HAVE_ALLOCA_H
 735 #   include <alloca.h>
 736 #  else
 737 #   ifdef _AIX
 738  #pragma alloca
 739 #   else
 740
 741 /* We need to be careful not to declare this in a way which conflicts with
 742    bison.  Bison never declares it as char *, but under various circumstances
 743    (like __hpux) we need to use void *.  */
 744 #    if defined (__STDC__) || defined (__hpux)
 745    extern void *alloca ();
 746 #    else /* Don't use void *.  */
 747    extern char *alloca ();
 748 #    endif /* Don't use void *.  */
 749 #   endif /* Not _AIX */
 750 #  endif /* Not HAVE_ALLOCA_H */
 751 # endif /* Not GNU C */
 752 #endif /* alloca not defined */
 753
 754 /* HOST_BYTE_ORDER must be defined to one of these.  */
 755
 756 #ifdef HAVE_ENDIAN_H
 757 #include <endian.h>
 758 #endif
 759
 760 #if !defined (BIG_ENDIAN)
 761 #define BIG_ENDIAN 4321
 762 #endif
 763
 764 #if !defined (LITTLE_ENDIAN)
 765 #define LITTLE_ENDIAN 1234
 766 #endif
 767
 768 /* Target-system-dependent parameters for GDB. */
 769
 770 #ifdef TARGET_BYTE_ORDER_SELECTABLE
 771 /* The target endianness is selectable at runtime.  Define
 772    TARGET_BYTE_ORDER to be a variable.  The user can use the `set
 773    endian' command to change it.  */
 774 #undef TARGET_BYTE_ORDER
 775 #define TARGET_BYTE_ORDER target_byte_order
 776 extern int target_byte_order;
 777 /* Nonzero when target_byte_order auto-detected */
 778 extern int target_byte_order_auto;
 779 #endif
 780
 781 extern void set_endian_from_file PARAMS ((bfd *));
 782
 783 /* The target architecture can be set at run-time. */
 784 extern int target_architecture_auto;
 785 extern const bfd_arch_info_type *target_architecture;
 786 extern void set_architecture_from_file PARAMS ((bfd *));
 787 /* Notify target of a change to the selected architecture. Zero return
 788    status indicates that the target did not like the change. */
 789 extern int (*target_architecture_hook) PARAMS ((const bfd_arch_info_type *ap));
 790 extern void set_architecture_from_arch_mach PARAMS ((enum bfd_architecture arch, unsigned long mach));
 791
 792 /* Number of bits in a char or unsigned char for the target machine.
 793    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 794 #if !defined (TARGET_CHAR_BIT)
 795 #define TARGET_CHAR_BIT 8
 796 #endif
 797
 798 /* Number of bits in a short or unsigned short for the target machine. */
 799 #if !defined (TARGET_SHORT_BIT)
 800 #define TARGET_SHORT_BIT (2 * TARGET_CHAR_BIT)
 801 #endif
 802
 803 /* Number of bits in an int or unsigned int for the target machine. */
 804 #if !defined (TARGET_INT_BIT)
 805 #define TARGET_INT_BIT (4 * TARGET_CHAR_BIT)
 806 #endif
 807
 808 /* Number of bits in a long or unsigned long for the target machine. */
 809 #if !defined (TARGET_LONG_BIT)
 810 #define TARGET_LONG_BIT (4 * TARGET_CHAR_BIT)
 811 #endif
 812
 813 /* Number of bits in a long long or unsigned long long for the target machine. */
 814 #if !defined (TARGET_LONG_LONG_BIT)
 815 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 816 #endif
 817
 818 /* Number of bits in a float for the target machine. */
 819 #if !defined (TARGET_FLOAT_BIT)
 820 #define TARGET_FLOAT_BIT (4 * TARGET_CHAR_BIT)
 821 #endif
 822
 823 /* Number of bits in a double for the target machine. */
 824 #if !defined (TARGET_DOUBLE_BIT)
 825 #define TARGET_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 826 #endif
 827
 828 /* Number of bits in a long double for the target machine.  */
 829 #if !defined (TARGET_LONG_DOUBLE_BIT)
 830 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 831 #endif
 832
 833 /* Number of bits in a pointer for the target machine */
 834 #if !defined (TARGET_PTR_BIT)
 835 #define TARGET_PTR_BIT TARGET_INT_BIT
 836 #endif
 837
 838 /* If we picked up a copy of CHAR_BIT from a configuration file
 839    (which may get it by including <limits.h>) then use it to set
 840    the number of bits in a host char.  If not, use the same size
 841    as the target. */
 842
 843 #if defined (CHAR_BIT)
 844 #define HOST_CHAR_BIT CHAR_BIT
 845 #else
 846 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 847 #endif
 848
 849 /* The bit byte-order has to do just with numbering of bits in
 850    debugging symbols and such.  Conceptually, it's quite separate
 851    from byte/word byte order.  */
 852
 853 #if !defined (BITS_BIG_ENDIAN)
 854 #ifndef TARGET_BYTE_ORDER_SELECTABLE
 855
 856 #if TARGET_BYTE_ORDER == BIG_ENDIAN
 857 #define BITS_BIG_ENDIAN 1
 858 #endif /* Big endian.  */
 859
 860 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
 861 #define BITS_BIG_ENDIAN 0
 862 #endif /* Little endian.  */
 863
 864 #else /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
 865
 866 #define BITS_BIG_ENDIAN (TARGET_BYTE_ORDER == BIG_ENDIAN)
 867
 868 #endif /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
 869 #endif /* BITS_BIG_ENDIAN not defined.  */
 870
 871 /* In findvar.c.  */
 872
 873 extern LONGEST extract_signed_integer PARAMS ((void *, int));
 874
 875 extern ULONGEST extract_unsigned_integer PARAMS ((void *, int));
 876
 877 extern int extract_long_unsigned_integer PARAMS ((void *, int, LONGEST *));
 878
 879 extern CORE_ADDR extract_address PARAMS ((void *, int));
 880
 881 extern void store_signed_integer PARAMS ((void *, int, LONGEST));
 882
 883 extern void store_unsigned_integer PARAMS ((void *, int, ULONGEST));
 884
 885 extern void store_address PARAMS ((void *, int, CORE_ADDR));
 886
 887 /* Setup definitions for host and target floating point formats.  We need to
 888    consider the format for `float', `double', and `long double' for both target
 889    and host.  We need to do this so that we know what kind of conversions need
 890    to be done when converting target numbers to and from the hosts DOUBLEST
 891    data type.  */
 892
 893 /* This is used to indicate that we don't know the format of the floating point
 894    number.  Typically, this is useful for native ports, where the actual format
 895    is irrelevant, since no conversions will be taking place.  */
 896
 897 extern const struct floatformat floatformat_unknown;
 898
 899 #if HOST_BYTE_ORDER == BIG_ENDIAN
 900 #  ifndef HOST_FLOAT_FORMAT
 901 #    define HOST_FLOAT_FORMAT &floatformat_ieee_single_big
 902 #  endif
 903 #  ifndef HOST_DOUBLE_FORMAT
 904 #    define HOST_DOUBLE_FORMAT &floatformat_ieee_double_big
 905 #  endif
 906 #else                           /* LITTLE_ENDIAN */
 907 #  ifndef HOST_FLOAT_FORMAT
 908 #    define HOST_FLOAT_FORMAT &floatformat_ieee_single_little
 909 #  endif
 910 #  ifndef HOST_DOUBLE_FORMAT
 911 #    define HOST_DOUBLE_FORMAT &floatformat_ieee_double_little
 912 #  endif
 913 #endif
 914
 915 #ifndef HOST_LONG_DOUBLE_FORMAT
 916 #define HOST_LONG_DOUBLE_FORMAT &floatformat_unknown
 917 #endif
 918
 919 #ifndef TARGET_BYTE_ORDER_SELECTABLE
 920 #  if TARGET_BYTE_ORDER == BIG_ENDIAN
 921 #    ifndef TARGET_FLOAT_FORMAT
 922 #      define TARGET_FLOAT_FORMAT &floatformat_ieee_single_big
 923 #    endif
 924 #    ifndef TARGET_DOUBLE_FORMAT
 925 #      define TARGET_DOUBLE_FORMAT &floatformat_ieee_double_big
 926 #    endif
 927 #  else /* LITTLE_ENDIAN */
 928 #    ifndef TARGET_FLOAT_FORMAT
 929 #      define TARGET_FLOAT_FORMAT &floatformat_ieee_single_little
 930 #    endif
 931 #    ifndef TARGET_DOUBLE_FORMAT
 932 #      define TARGET_DOUBLE_FORMAT &floatformat_ieee_double_little
 933 #    endif
 934 #  endif
 935 #else                           /* TARGET_BYTE_ORDER_SELECTABLE */
 936 #  ifndef TARGET_FLOAT_FORMAT
 937 #    define TARGET_FLOAT_FORMAT (target_byte_order == BIG_ENDIAN \
 938                                  ? &floatformat_ieee_single_big \
 939                                  : &floatformat_ieee_single_little)
 940 #  endif
 941 #  ifndef TARGET_DOUBLE_FORMAT
 942 #    define TARGET_DOUBLE_FORMAT (target_byte_order == BIG_ENDIAN \
 943                                   ? &floatformat_ieee_double_big \
 944                                   : &floatformat_ieee_double_little)
 945 #  endif
 946 #endif
 947
 948 #ifndef TARGET_LONG_DOUBLE_FORMAT
 949 #  define TARGET_LONG_DOUBLE_FORMAT &floatformat_unknown
 950 #endif
 951
 952 /* Use `long double' if the host compiler supports it.  (Note that this is not
 953    necessarily any longer than `double'.  On SunOS/gcc, it's the same as
 954    double.)  This is necessary because GDB internally converts all floating
 955    point values to the widest type supported by the host.
 956
 957    There are problems however, when the target `long double' is longer than the
 958    host's `long double'.  In general, we'll probably reduce the precision of
 959    any such values and print a warning.  */
 960
 961 #ifdef HAVE_LONG_DOUBLE
 962 typedef long double DOUBLEST;
 963 #else
 964 typedef double DOUBLEST;
 965 #endif
 966
 967 extern void floatformat_to_doublest PARAMS ((const struct floatformat *,
 968                                              char *, DOUBLEST *));
 969 extern void floatformat_from_doublest PARAMS ((const struct floatformat *,
 970                                                DOUBLEST *, char *));
 971 extern DOUBLEST extract_floating PARAMS ((void *, int));
 972
 973 extern void store_floating PARAMS ((void *, int, DOUBLEST));
 974 \f
 975 /* On some machines there are bits in addresses which are not really
 976    part of the address, but are used by the kernel, the hardware, etc.
 977    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
 978    so we get a "real" address such as one would find in a symbol
 979    table.  This is used only for addresses of instructions, and even then
 980    I'm not sure it's used in all contexts.  It exists to deal with there
 981    being a few stray bits in the PC which would mislead us, not as some sort
 982    of generic thing to handle alignment or segmentation (it's possible it
 983    should be in TARGET_READ_PC instead).  */
 984 #if !defined (ADDR_BITS_REMOVE)
 985 #define ADDR_BITS_REMOVE(addr) (addr)
 986 #endif /* No ADDR_BITS_REMOVE.  */
 987
 988 /* From valops.c */
 989
 990 extern CORE_ADDR push_bytes PARAMS ((CORE_ADDR, char *, int));
 991
 992 extern CORE_ADDR push_word PARAMS ((CORE_ADDR, ULONGEST));
 993
 994 /* Some parts of gdb might be considered optional, in the sense that they
 995    are not essential for being able to build a working, usable debugger
 996    for a specific environment.  For example, the maintenance commands
 997    are there for the benefit of gdb maintainers.  As another example,
 998    some environments really don't need gdb's that are able to read N
 999    different object file formats.  In order to make it possible (but
1000    not necessarily recommended) to build "stripped down" versions of
1001    gdb, the following defines control selective compilation of those
1002    parts of gdb which can be safely left out when necessary.  Note that
1003    the default is to include everything. */
1004
1005 #ifndef MAINTENANCE_CMDS
1006 #define MAINTENANCE_CMDS 1
1007 #endif
1008
1009 #ifdef MAINTENANCE_CMDS
1010 extern int watchdog;
1011 #endif
1012
1013 #include "dis-asm.h"            /* Get defs for disassemble_info */
1014
1015 extern int dis_asm_read_memory PARAMS ((bfd_vma memaddr, bfd_byte *myaddr,
1016                                         int len, disassemble_info *info));
1017
1018 extern void dis_asm_memory_error PARAMS ((int status, bfd_vma memaddr,
1019                                           disassemble_info *info));
1020
1021 extern void dis_asm_print_address PARAMS ((bfd_vma addr,
1022                                            disassemble_info *info));
1023
1024 extern int (*tm_print_insn) PARAMS ((bfd_vma, disassemble_info*));
1025 extern disassemble_info tm_print_insn_info;
1026
1027 /* Hooks for alternate command interfaces.  */
1028
1029 #ifdef __STDC__
1030 struct target_waitstatus;
1031 struct cmd_list_element;
1032 #endif
1033
1034 extern void (*init_ui_hook) PARAMS ((char *argv0));
1035 extern void (*command_loop_hook) PARAMS ((void));
1036 extern void (*fputs_unfiltered_hook) PARAMS ((const char *linebuffer,
1037                                               FILE *stream));
1038 extern void (*print_frame_info_listing_hook) PARAMS ((struct symtab *s,
1039                                                       int line, int stopline,
1040                                                       int noerror));
1041 extern int  (*query_hook) PARAMS ((const char *, va_list));
1042 extern void (*warning_hook) PARAMS ((const char *, va_list));
1043 extern void (*flush_hook) PARAMS ((FILE *stream));
1044 extern void (*create_breakpoint_hook) PARAMS ((struct breakpoint *b));
1045 extern void (*delete_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
1046 extern void (*modify_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
1047 extern void (*target_output_hook) PARAMS ((char *));
1048 extern void (*interactive_hook) PARAMS ((void));
1049 extern void (*registers_changed_hook) PARAMS ((void));
1050 extern void (*readline_begin_hook) PARAMS ((char *, ...));
1051 extern char * (*readline_hook) PARAMS ((char *));
1052 extern void (*readline_end_hook) PARAMS ((void));
1053 extern void (*pc_changed_hook) PARAMS ((void));
1054 extern void (*context_hook) PARAMS ((int));
1055 extern int (*target_wait_hook) PARAMS ((int pid,
1056                                         struct target_waitstatus *status));
1057
1058 extern void (*call_command_hook) PARAMS ((struct cmd_list_element *c,
1059                                           char *cmd, int from_tty));
1060
1061 extern NORETURN void (*error_hook) PARAMS ((void)) ATTR_NORETURN;
1062
1063
1064
1065 /* Inhibit window interface if non-zero. */
1066
1067 extern int use_windows;
1068
1069 /* Symbolic definitions of filename-related things.  */
1070 /* FIXME, this doesn't work very well if host and executable
1071    filesystems conventions are different.  */
1072
1073 #ifndef DIRNAME_SEPARATOR
1074 #define DIRNAME_SEPARATOR ':'
1075 #endif
1076
1077 #ifndef SLASH_P
1078 #if defined(__GO32__)||defined(_WIN32)
1079 #define SLASH_P(X) ((X)=='\\')
1080 #else
1081 #define SLASH_P(X) ((X)=='/')
1082 #endif
1083 #endif
1084
1085 #ifndef SLASH_CHAR
1086 #if defined(__GO32__)||defined(_WIN32)
1087 #define SLASH_CHAR '\\'
1088 #else
1089 #define SLASH_CHAR '/'
1090 #endif
1091 #endif
1092
1093 #ifndef SLASH_STRING
1094 #if defined(__GO32__)||defined(_WIN32)
1095 #define SLASH_STRING "\\"
1096 #else
1097 #define SLASH_STRING "/"
1098 #endif
1099 #endif
1100
1101 #ifndef ROOTED_P
1102 #define ROOTED_P(X) (SLASH_P((X)[0]))
1103 #endif
1104
1105 /* On some systems, PIDGET is defined to extract the inferior pid from
1106    an internal pid that has the thread id and pid in seperate bit
1107    fields.  If not defined, then just use the entire internal pid as
1108    the actual pid. */
1109
1110 #ifndef PIDGET
1111 #define PIDGET(pid) (pid)
1112 #endif
1113
1114 /* If under Cygwin, provide backwards compatibility with older
1115    Cygwin compilers that don't define the current cpp define. */
1116 #ifdef __CYGWIN32__
1117 #ifndef __CYGWIN__
1118 #define __CYGWIN__
1119 #endif
1120 #endif
1121
1122 #endif /* #ifndef DEFS_H */