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 /* From tm.h */
 289 struct type;
 290 typedef int (use_struct_convention_fn) PARAMS ((int gcc_p, struct type *value_type));
 291 extern use_struct_convention_fn generic_use_struct_convention;
 292
 293 \f
 294 /* Annotation stuff.  */
 295
 296 extern int annotation_level; /* in stack.c */
 297 \f
 298 extern void begin_line PARAMS ((void));
 299
 300 extern void wrap_here PARAMS ((char *));
 301
 302 extern void reinitialize_more_filter PARAMS ((void));
 303
 304 typedef FILE GDB_FILE;
 305 #define gdb_stdout stdout
 306 #define gdb_stderr stderr
 307
 308 extern void gdb_flush PARAMS ((GDB_FILE *));
 309
 310 extern GDB_FILE *gdb_fopen PARAMS ((char * name, char * mode));
 311
 312 extern void fputs_filtered PARAMS ((const char *, GDB_FILE *));
 313
 314 extern void fputs_unfiltered PARAMS ((const char *, GDB_FILE *));
 315
 316 extern int fputc_filtered PARAMS ((int c, GDB_FILE *));
 317
 318 extern int fputc_unfiltered PARAMS ((int c, GDB_FILE *));
 319
 320 extern int putchar_unfiltered PARAMS ((int c));
 321
 322 extern void puts_filtered PARAMS ((const char *));
 323
 324 extern void puts_unfiltered PARAMS ((const char *));
 325
 326 extern void puts_debug PARAMS ((char *prefix, char *string, char *suffix));
 327
 328 extern void vprintf_filtered PARAMS ((const char *, va_list))
 329      ATTR_FORMAT(printf, 1, 0);
 330
 331 extern void vfprintf_filtered PARAMS ((FILE *, const char *, va_list))
 332      ATTR_FORMAT(printf, 2, 0);
 333
 334 extern void fprintf_filtered PARAMS ((FILE *, const char *, ...))
 335      ATTR_FORMAT(printf, 2, 3);
 336
 337 extern void fprintfi_filtered PARAMS ((int, FILE *, const char *, ...))
 338      ATTR_FORMAT(printf, 3, 4);
 339
 340 extern void printf_filtered PARAMS ((const char *, ...))
 341      ATTR_FORMAT(printf, 1, 2);
 342
 343 extern void printfi_filtered PARAMS ((int, const char *, ...))
 344      ATTR_FORMAT(printf, 2, 3);
 345
 346 extern void vprintf_unfiltered PARAMS ((const char *, va_list))
 347      ATTR_FORMAT(printf, 1, 0);
 348
 349 extern void vfprintf_unfiltered PARAMS ((FILE *, const char *, va_list))
 350      ATTR_FORMAT(printf, 2, 0);
 351
 352 extern void fprintf_unfiltered PARAMS ((FILE *, const char *, ...))
 353      ATTR_FORMAT(printf, 2, 3);
 354
 355 extern void printf_unfiltered PARAMS ((const char *, ...))
 356      ATTR_FORMAT(printf, 1, 2);
 357
 358 extern void print_spaces PARAMS ((int, GDB_FILE *));
 359
 360 extern void print_spaces_filtered PARAMS ((int, GDB_FILE *));
 361
 362 extern char *n_spaces PARAMS ((int));
 363
 364 extern void gdb_printchar PARAMS ((int, GDB_FILE *, int));
 365
 366 extern void gdb_print_address PARAMS ((void *, GDB_FILE *));
 367
 368 typedef bfd_vma t_addr;
 369 typedef bfd_vma t_reg;
 370 extern char* paddr PARAMS ((t_addr addr));
 371
 372 extern char* preg PARAMS ((t_reg reg));
 373
 374 extern char* paddr_nz PARAMS ((t_addr addr));
 375
 376 extern char* preg_nz PARAMS ((t_reg reg));
 377
 378 extern void fprintf_symbol_filtered PARAMS ((GDB_FILE *, char *,
 379                                              enum language, int));
 380
 381 extern NORETURN void perror_with_name PARAMS ((char *)) ATTR_NORETURN;
 382
 383 extern void print_sys_errmsg PARAMS ((char *, int));
 384
 385 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 386    "const char *" in unistd.h, so we can't declare the argument
 387    as "char *".  */
 388
 389 extern char *re_comp PARAMS ((const char *));
 390
 391 /* From symfile.c */
 392
 393 extern void symbol_file_command PARAMS ((char *, int));
 394
 395 /* From top.c */
 396
 397 extern char *skip_quoted PARAMS ((char *));
 398
 399 extern char *gdb_readline PARAMS ((char *));
 400
 401 extern char *command_line_input PARAMS ((char *, int, char *));
 402
 403 extern void print_prompt PARAMS ((void));
 404
 405 extern int input_from_terminal_p PARAMS ((void));
 406
 407 extern int info_verbose;
 408
 409 /* From printcmd.c */
 410
 411 extern void set_next_address PARAMS ((CORE_ADDR));
 412
 413 extern void print_address_symbolic PARAMS ((CORE_ADDR, GDB_FILE *, int,
 414                                             char *));
 415
 416 extern void print_address_numeric PARAMS ((CORE_ADDR, int, GDB_FILE *));
 417
 418 extern void print_address PARAMS ((CORE_ADDR, GDB_FILE *));
 419
 420 /* From source.c */
 421
 422 extern int openp PARAMS ((char *, int, char *, int, int, char **));
 423
 424 extern void mod_path PARAMS ((char *, char **));
 425
 426 extern void directory_command PARAMS ((char *, int));
 427
 428 extern void init_source_path PARAMS ((void));
 429
 430 extern char *symtab_to_filename PARAMS ((struct symtab *));
 431
 432 /* From findvar.c */
 433
 434 extern int read_relative_register_raw_bytes PARAMS ((int, char *));
 435
 436 /* From readline (but not in any readline .h files).  */
 437
 438 extern char *tilde_expand PARAMS ((char *));
 439
 440 /* Control types for commands */
 441
 442 enum misc_command_type
 443 {
 444   ok_command,
 445   end_command,
 446   else_command,
 447   nop_command
 448 };
 449
 450 enum command_control_type
 451 {
 452   simple_control,
 453   break_control,
 454   continue_control,
 455   while_control,
 456   if_control,
 457   invalid_control
 458 };
 459
 460 /* Structure for saved commands lines
 461    (for breakpoints, defined commands, etc).  */
 462
 463 struct command_line
 464 {
 465   struct command_line *next;
 466   char *line;
 467   enum command_control_type control_type;
 468   int body_count;
 469   struct command_line **body_list;
 470 };
 471
 472 extern struct command_line *read_command_lines PARAMS ((char *, int));
 473
 474 extern void free_command_lines PARAMS ((struct command_line **));
 475
 476 /* String containing the current directory (what getwd would return).  */
 477
 478 extern char *current_directory;
 479
 480 /* Default radixes for input and output.  Only some values supported.  */
 481 extern unsigned input_radix;
 482 extern unsigned output_radix;
 483
 484 /* Possibilities for prettyprint parameters to routines which print
 485    things.  Like enum language, this should be in value.h, but needs
 486    to be here for the same reason.  FIXME:  If we can eliminate this
 487    as an arg to LA_VAL_PRINT, then we can probably move it back to
 488    value.h. */
 489
 490 enum val_prettyprint
 491 {
 492   Val_no_prettyprint = 0,
 493   Val_prettyprint,
 494   /* Use the default setting which the user has specified.  */
 495   Val_pretty_default
 496 };
 497
 498 \f
 499 /* Host machine definition.  This will be a symlink to one of the
 500    xm-*.h files, built by the `configure' script.  */
 501
 502 #include "xm.h"
 503
 504 /* Native machine support.  This will be a symlink to one of the
 505    nm-*.h files, built by the `configure' script.  */
 506
 507 #include "nm.h"
 508
 509 /* Target machine definition.  This will be a symlink to one of the
 510    tm-*.h files, built by the `configure' script.  */
 511
 512 #include "tm.h"
 513
 514 /* If the xm.h file did not define the mode string used to open the
 515    files, assume that binary files are opened the same way as text
 516    files */
 517 #ifndef FOPEN_RB
 518 #include "fopen-same.h"
 519 #endif
 520
 521 /* Microsoft C can't deal with const pointers */
 522
 523 #ifdef _MSC_VER
 524 #define CONST_PTR
 525 #else
 526 #define CONST_PTR const
 527 #endif
 528
 529 /*
 530  * Allow things in gdb to be declared "volatile".  If compiling ANSI, it
 531  * just works.  If compiling with gcc but non-ansi, redefine to __volatile__.
 532  * If non-ansi, non-gcc, then eliminate "volatile" entirely, making those
 533  * objects be read-write rather than read-only.
 534  */
 535
 536 #ifndef volatile
 537 #ifndef __STDC__
 538 # ifdef __GNUC__
 539 #  define volatile __volatile__
 540 # else
 541 #  define volatile /*nothing*/
 542 # endif /* GNUC */
 543 #endif /* STDC */
 544 #endif /* volatile */
 545
 546 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 547    FIXME: Assumes 2's complement arithmetic */
 548
 549 #if !defined (UINT_MAX)
 550 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 551 #endif
 552
 553 #if !defined (INT_MAX)
 554 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 555 #endif
 556
 557 #if !defined (INT_MIN)
 558 #define INT_MIN ((int)((int) ~0 ^ INT_MAX))     /* 0x80000000 for 32-bits */
 559 #endif
 560
 561 #if !defined (ULONG_MAX)
 562 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 563 #endif
 564
 565 #if !defined (LONG_MAX)
 566 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 567 #endif
 568
 569 #ifndef LONGEST
 570
 571 #ifdef BFD64
 572
 573 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
 574
 575 #define LONGEST BFD_HOST_64_BIT
 576 #define ULONGEST BFD_HOST_U_64_BIT
 577
 578 #else /* No BFD64 */
 579
 580 #  ifdef CC_HAS_LONG_LONG
 581 #    define LONGEST long long
 582 #    define ULONGEST unsigned long long
 583 #  else
 584 /* BFD_HOST_64_BIT is defined for some hosts that don't have long long
 585    (e.g. i386-windows) so try it.  */
 586 #    ifdef BFD_HOST_64_BIT
 587 #      define LONGEST BFD_HOST_64_BIT
 588 #      define ULONGEST BFD_HOST_U_64_BIT
 589 #    else
 590 #      define LONGEST long
 591 #      define ULONGEST unsigned long
 592 #    endif
 593 #  endif
 594
 595 #endif /* No BFD64 */
 596
 597 #endif /* ! LONGEST */
 598
 599 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 600    arguments to a function, number in a value history, register number, etc.)
 601    where the value must not be larger than can fit in an int.  */
 602
 603 extern int longest_to_int PARAMS ((LONGEST));
 604
 605 /* Assorted functions we can declare, now that const and volatile are
 606    defined.  */
 607
 608 extern char *savestring PARAMS ((const char *, int));
 609
 610 extern char *msavestring PARAMS ((void *, const char *, int));
 611
 612 extern char *strsave PARAMS ((const char *));
 613
 614 extern char *mstrsave PARAMS ((void *, const char *));
 615
 616 #ifdef _MSC_VER /* FIXME; was long, but this causes compile errors in msvc if already defined */
 617 extern PTR xmmalloc PARAMS ((PTR, size_t));
 618
 619 extern PTR xmrealloc PARAMS ((PTR, PTR, size_t));
 620 #else
 621 extern PTR xmmalloc PARAMS ((PTR, long));
 622
 623 extern PTR xmrealloc PARAMS ((PTR, PTR, long));
 624 #endif
 625
 626 extern int parse_escape PARAMS ((char **));
 627
 628 extern char *reg_names[];
 629
 630 /* Message to be printed before the error message, when an error occurs.  */
 631
 632 extern char *error_pre_print;
 633
 634 /* Message to be printed before the error message, when an error occurs.  */
 635
 636 extern char *quit_pre_print;
 637
 638 /* Message to be printed before the warning message, when a warning occurs.  */
 639
 640 extern char *warning_pre_print;
 641
 642 extern NORETURN void error PARAMS((const char *, ...)) ATTR_NORETURN;
 643
 644 extern void error_begin PARAMS ((void));
 645
 646 extern NORETURN void fatal PARAMS((char *, ...)) ATTR_NORETURN;
 647
 648 extern NORETURN void nomem PARAMS ((long)) ATTR_NORETURN;
 649
 650 /* Reasons for calling return_to_top_level.  */
 651 enum return_reason {
 652   /* User interrupt.  */
 653   RETURN_QUIT,
 654
 655   /* Any other error.  */
 656   RETURN_ERROR
 657 };
 658
 659 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 660 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 661 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 662 typedef int return_mask;
 663
 664 extern NORETURN void
 665 return_to_top_level PARAMS ((enum return_reason)) ATTR_NORETURN;
 666
 667 extern int
 668 catch_errors PARAMS ((int (*) (char *), void *, char *, return_mask));
 669
 670 extern void warning_begin PARAMS ((void));
 671
 672 extern void warning PARAMS ((const char *, ...))
 673      ATTR_FORMAT(printf, 1, 2);
 674
 675 /* Global functions from other, non-gdb GNU thingies.
 676    Libiberty thingies are no longer declared here.  We include libiberty.h
 677    above, instead.  */
 678
 679 #ifndef GETENV_PROVIDED
 680 extern char *getenv PARAMS ((const char *));
 681 #endif
 682
 683 /* From other system libraries */
 684
 685 #ifdef HAVE_STDDEF_H
 686 #include <stddef.h>
 687 #endif
 688
 689 #ifdef HAVE_STDLIB_H
 690 #if defined(_MSC_VER) && !defined(__cplusplus)
 691 /* msvc defines these in stdlib.h for c code */
 692 #undef min
 693 #undef max
 694 #endif
 695 #include <stdlib.h>
 696 #endif
 697 #ifndef min
 698 #define min(a, b) ((a) < (b) ? (a) : (b))
 699 #endif
 700 #ifndef max
 701 #define max(a, b) ((a) > (b) ? (a) : (b))
 702 #endif
 703
 704
 705 /* We take the address of fclose later, but some stdio's forget
 706    to declare this.  We can't always declare it since there's
 707    no way to declare the parameters without upsetting some compiler
 708    somewhere. */
 709
 710 #ifndef FCLOSE_PROVIDED
 711 extern int fclose PARAMS ((FILE *));
 712 #endif
 713
 714 #ifndef atof
 715 extern double atof PARAMS ((const char *));     /* X3.159-1989  4.10.1.1 */
 716 #endif
 717
 718 #ifndef MALLOC_INCOMPATIBLE
 719
 720 #ifdef NEED_DECLARATION_MALLOC
 721 extern PTR malloc ();
 722 #endif
 723
 724 #ifdef NEED_DECLARATION_REALLOC
 725 extern PTR realloc ();
 726 #endif
 727
 728 #ifdef NEED_DECLARATION_FREE
 729 extern void free ();
 730 #endif
 731
 732 #endif /* MALLOC_INCOMPATIBLE */
 733
 734 /* Various possibilities for alloca.  */
 735 #ifndef alloca
 736 # ifdef __GNUC__
 737 #  define alloca __builtin_alloca
 738 # else /* Not GNU C */
 739 #  ifdef HAVE_ALLOCA_H
 740 #   include <alloca.h>
 741 #  else
 742 #   ifdef _AIX
 743  #pragma alloca
 744 #   else
 745
 746 /* We need to be careful not to declare this in a way which conflicts with
 747    bison.  Bison never declares it as char *, but under various circumstances
 748    (like __hpux) we need to use void *.  */
 749 #    if defined (__STDC__) || defined (__hpux)
 750    extern void *alloca ();
 751 #    else /* Don't use void *.  */
 752    extern char *alloca ();
 753 #    endif /* Don't use void *.  */
 754 #   endif /* Not _AIX */
 755 #  endif /* Not HAVE_ALLOCA_H */
 756 # endif /* Not GNU C */
 757 #endif /* alloca not defined */
 758
 759 /* HOST_BYTE_ORDER must be defined to one of these.  */
 760
 761 #ifdef HAVE_ENDIAN_H
 762 #include <endian.h>
 763 #endif
 764
 765 #if !defined (BIG_ENDIAN)
 766 #define BIG_ENDIAN 4321
 767 #endif
 768
 769 #if !defined (LITTLE_ENDIAN)
 770 #define LITTLE_ENDIAN 1234
 771 #endif
 772
 773 /* Target-system-dependent parameters for GDB. */
 774
 775 #ifdef TARGET_BYTE_ORDER_SELECTABLE
 776 /* The target endianness is selectable at runtime.  Define
 777    TARGET_BYTE_ORDER to be a variable.  The user can use the `set
 778    endian' command to change it.  */
 779 #undef TARGET_BYTE_ORDER
 780 #define TARGET_BYTE_ORDER target_byte_order
 781 extern int target_byte_order;
 782 /* Nonzero when target_byte_order auto-detected */
 783 extern int target_byte_order_auto;
 784 #endif
 785
 786 extern void set_endian_from_file PARAMS ((bfd *));
 787
 788 /* The target architecture can be set at run-time. */
 789 extern int target_architecture_auto;
 790 extern const bfd_arch_info_type *target_architecture;
 791 extern void set_architecture_from_file PARAMS ((bfd *));
 792 /* Notify target of a change to the selected architecture. Zero return
 793    status indicates that the target did not like the change. */
 794 extern int (*target_architecture_hook) PARAMS ((const bfd_arch_info_type *ap));
 795 extern void set_architecture_from_arch_mach PARAMS ((enum bfd_architecture arch, unsigned long mach));
 796
 797 /* Number of bits in a char or unsigned char for the target machine.
 798    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 799 #if !defined (TARGET_CHAR_BIT)
 800 #define TARGET_CHAR_BIT 8
 801 #endif
 802
 803 /* Number of bits in a short or unsigned short for the target machine. */
 804 #if !defined (TARGET_SHORT_BIT)
 805 #define TARGET_SHORT_BIT (2 * TARGET_CHAR_BIT)
 806 #endif
 807
 808 /* Number of bits in an int or unsigned int for the target machine. */
 809 #if !defined (TARGET_INT_BIT)
 810 #define TARGET_INT_BIT (4 * TARGET_CHAR_BIT)
 811 #endif
 812
 813 /* Number of bits in a long or unsigned long for the target machine. */
 814 #if !defined (TARGET_LONG_BIT)
 815 #define TARGET_LONG_BIT (4 * TARGET_CHAR_BIT)
 816 #endif
 817
 818 /* Number of bits in a long long or unsigned long long for the target machine. */
 819 #if !defined (TARGET_LONG_LONG_BIT)
 820 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 821 #endif
 822
 823 /* Number of bits in a float for the target machine. */
 824 #if !defined (TARGET_FLOAT_BIT)
 825 #define TARGET_FLOAT_BIT (4 * TARGET_CHAR_BIT)
 826 #endif
 827
 828 /* Number of bits in a double for the target machine. */
 829 #if !defined (TARGET_DOUBLE_BIT)
 830 #define TARGET_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 831 #endif
 832
 833 /* Number of bits in a long double for the target machine.  */
 834 #if !defined (TARGET_LONG_DOUBLE_BIT)
 835 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 836 #endif
 837
 838 /* Number of bits in a pointer for the target machine */
 839 #if !defined (TARGET_PTR_BIT)
 840 #define TARGET_PTR_BIT TARGET_INT_BIT
 841 #endif
 842
 843 /* If we picked up a copy of CHAR_BIT from a configuration file
 844    (which may get it by including <limits.h>) then use it to set
 845    the number of bits in a host char.  If not, use the same size
 846    as the target. */
 847
 848 #if defined (CHAR_BIT)
 849 #define HOST_CHAR_BIT CHAR_BIT
 850 #else
 851 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 852 #endif
 853
 854 /* The bit byte-order has to do just with numbering of bits in
 855    debugging symbols and such.  Conceptually, it's quite separate
 856    from byte/word byte order.  */
 857
 858 #if !defined (BITS_BIG_ENDIAN)
 859 #ifndef TARGET_BYTE_ORDER_SELECTABLE
 860
 861 #if TARGET_BYTE_ORDER == BIG_ENDIAN
 862 #define BITS_BIG_ENDIAN 1
 863 #endif /* Big endian.  */
 864
 865 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
 866 #define BITS_BIG_ENDIAN 0
 867 #endif /* Little endian.  */
 868
 869 #else /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
 870
 871 #define BITS_BIG_ENDIAN (TARGET_BYTE_ORDER == BIG_ENDIAN)
 872
 873 #endif /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
 874 #endif /* BITS_BIG_ENDIAN not defined.  */
 875
 876 /* In findvar.c.  */
 877
 878 extern LONGEST extract_signed_integer PARAMS ((void *, int));
 879
 880 extern ULONGEST extract_unsigned_integer PARAMS ((void *, int));
 881
 882 extern int extract_long_unsigned_integer PARAMS ((void *, int, LONGEST *));
 883
 884 extern CORE_ADDR extract_address PARAMS ((void *, int));
 885
 886 extern void store_signed_integer PARAMS ((void *, int, LONGEST));
 887
 888 extern void store_unsigned_integer PARAMS ((void *, int, ULONGEST));
 889
 890 extern void store_address PARAMS ((void *, int, CORE_ADDR));
 891
 892 /* Setup definitions for host and target floating point formats.  We need to
 893    consider the format for `float', `double', and `long double' for both target
 894    and host.  We need to do this so that we know what kind of conversions need
 895    to be done when converting target numbers to and from the hosts DOUBLEST
 896    data type.  */
 897
 898 /* This is used to indicate that we don't know the format of the floating point
 899    number.  Typically, this is useful for native ports, where the actual format
 900    is irrelevant, since no conversions will be taking place.  */
 901
 902 extern const struct floatformat floatformat_unknown;
 903
 904 #if HOST_BYTE_ORDER == BIG_ENDIAN
 905 #  ifndef HOST_FLOAT_FORMAT
 906 #    define HOST_FLOAT_FORMAT &floatformat_ieee_single_big
 907 #  endif
 908 #  ifndef HOST_DOUBLE_FORMAT
 909 #    define HOST_DOUBLE_FORMAT &floatformat_ieee_double_big
 910 #  endif
 911 #else                           /* LITTLE_ENDIAN */
 912 #  ifndef HOST_FLOAT_FORMAT
 913 #    define HOST_FLOAT_FORMAT &floatformat_ieee_single_little
 914 #  endif
 915 #  ifndef HOST_DOUBLE_FORMAT
 916 #    define HOST_DOUBLE_FORMAT &floatformat_ieee_double_little
 917 #  endif
 918 #endif
 919
 920 #ifndef HOST_LONG_DOUBLE_FORMAT
 921 #define HOST_LONG_DOUBLE_FORMAT &floatformat_unknown
 922 #endif
 923
 924 #ifndef TARGET_BYTE_ORDER_SELECTABLE
 925 #  if TARGET_BYTE_ORDER == BIG_ENDIAN
 926 #    ifndef TARGET_FLOAT_FORMAT
 927 #      define TARGET_FLOAT_FORMAT &floatformat_ieee_single_big
 928 #    endif
 929 #    ifndef TARGET_DOUBLE_FORMAT
 930 #      define TARGET_DOUBLE_FORMAT &floatformat_ieee_double_big
 931 #    endif
 932 #  else /* LITTLE_ENDIAN */
 933 #    ifndef TARGET_FLOAT_FORMAT
 934 #      define TARGET_FLOAT_FORMAT &floatformat_ieee_single_little
 935 #    endif
 936 #    ifndef TARGET_DOUBLE_FORMAT
 937 #      define TARGET_DOUBLE_FORMAT &floatformat_ieee_double_little
 938 #    endif
 939 #  endif
 940 #else                           /* TARGET_BYTE_ORDER_SELECTABLE */
 941 #  ifndef TARGET_FLOAT_FORMAT
 942 #    define TARGET_FLOAT_FORMAT (target_byte_order == BIG_ENDIAN \
 943                                  ? &floatformat_ieee_single_big \
 944                                  : &floatformat_ieee_single_little)
 945 #  endif
 946 #  ifndef TARGET_DOUBLE_FORMAT
 947 #    define TARGET_DOUBLE_FORMAT (target_byte_order == BIG_ENDIAN \
 948                                   ? &floatformat_ieee_double_big \
 949                                   : &floatformat_ieee_double_little)
 950 #  endif
 951 #endif
 952
 953 #ifndef TARGET_LONG_DOUBLE_FORMAT
 954 #  define TARGET_LONG_DOUBLE_FORMAT &floatformat_unknown
 955 #endif
 956
 957 /* Use `long double' if the host compiler supports it.  (Note that this is not
 958    necessarily any longer than `double'.  On SunOS/gcc, it's the same as
 959    double.)  This is necessary because GDB internally converts all floating
 960    point values to the widest type supported by the host.
 961
 962    There are problems however, when the target `long double' is longer than the
 963    host's `long double'.  In general, we'll probably reduce the precision of
 964    any such values and print a warning.  */
 965
 966 #ifdef HAVE_LONG_DOUBLE
 967 typedef long double DOUBLEST;
 968 #else
 969 typedef double DOUBLEST;
 970 #endif
 971
 972 extern void floatformat_to_doublest PARAMS ((const struct floatformat *,
 973                                              char *, DOUBLEST *));
 974 extern void floatformat_from_doublest PARAMS ((const struct floatformat *,
 975                                                DOUBLEST *, char *));
 976 extern DOUBLEST extract_floating PARAMS ((void *, int));
 977
 978 extern void store_floating PARAMS ((void *, int, DOUBLEST));
 979 \f
 980 /* On some machines there are bits in addresses which are not really
 981    part of the address, but are used by the kernel, the hardware, etc.
 982    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
 983    so we get a "real" address such as one would find in a symbol
 984    table.  This is used only for addresses of instructions, and even then
 985    I'm not sure it's used in all contexts.  It exists to deal with there
 986    being a few stray bits in the PC which would mislead us, not as some sort
 987    of generic thing to handle alignment or segmentation (it's possible it
 988    should be in TARGET_READ_PC instead).  */
 989 #if !defined (ADDR_BITS_REMOVE)
 990 #define ADDR_BITS_REMOVE(addr) (addr)
 991 #endif /* No ADDR_BITS_REMOVE.  */
 992
 993 /* From valops.c */
 994
 995 extern CORE_ADDR push_bytes PARAMS ((CORE_ADDR, char *, int));
 996
 997 extern CORE_ADDR push_word PARAMS ((CORE_ADDR, ULONGEST));
 998
 999 /* Some parts of gdb might be considered optional, in the sense that they
1000    are not essential for being able to build a working, usable debugger
1001    for a specific environment.  For example, the maintenance commands
1002    are there for the benefit of gdb maintainers.  As another example,
1003    some environments really don't need gdb's that are able to read N
1004    different object file formats.  In order to make it possible (but
1005    not necessarily recommended) to build "stripped down" versions of
1006    gdb, the following defines control selective compilation of those
1007    parts of gdb which can be safely left out when necessary.  Note that
1008    the default is to include everything. */
1009
1010 #ifndef MAINTENANCE_CMDS
1011 #define MAINTENANCE_CMDS 1
1012 #endif
1013
1014 #ifdef MAINTENANCE_CMDS
1015 extern int watchdog;
1016 #endif
1017
1018 #include "dis-asm.h"            /* Get defs for disassemble_info */
1019
1020 extern int dis_asm_read_memory PARAMS ((bfd_vma memaddr, bfd_byte *myaddr,
1021                                         int len, disassemble_info *info));
1022
1023 extern void dis_asm_memory_error PARAMS ((int status, bfd_vma memaddr,
1024                                           disassemble_info *info));
1025
1026 extern void dis_asm_print_address PARAMS ((bfd_vma addr,
1027                                            disassemble_info *info));
1028
1029 extern int (*tm_print_insn) PARAMS ((bfd_vma, disassemble_info*));
1030 extern disassemble_info tm_print_insn_info;
1031
1032 /* Hooks for alternate command interfaces.  */
1033
1034 #ifdef __STDC__
1035 struct target_waitstatus;
1036 struct cmd_list_element;
1037 #endif
1038
1039 extern void (*init_ui_hook) PARAMS ((char *argv0));
1040 extern void (*command_loop_hook) PARAMS ((void));
1041 extern void (*fputs_unfiltered_hook) PARAMS ((const char *linebuffer,
1042                                               FILE *stream));
1043 extern void (*print_frame_info_listing_hook) PARAMS ((struct symtab *s,
1044                                                       int line, int stopline,
1045                                                       int noerror));
1046 extern int  (*query_hook) PARAMS ((const char *, va_list));
1047 extern void (*warning_hook) PARAMS ((const char *, va_list));
1048 extern void (*flush_hook) PARAMS ((FILE *stream));
1049 extern void (*create_breakpoint_hook) PARAMS ((struct breakpoint *b));
1050 extern void (*delete_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
1051 extern void (*modify_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
1052 extern void (*target_output_hook) PARAMS ((char *));
1053 extern void (*interactive_hook) PARAMS ((void));
1054 extern void (*registers_changed_hook) PARAMS ((void));
1055 extern void (*readline_begin_hook) PARAMS ((char *, ...));
1056 extern char * (*readline_hook) PARAMS ((char *));
1057 extern void (*readline_end_hook) PARAMS ((void));
1058 extern void (*pc_changed_hook) PARAMS ((void));
1059 extern void (*context_hook) PARAMS ((int));
1060 extern int (*target_wait_hook) PARAMS ((int pid,
1061                                         struct target_waitstatus *status));
1062
1063 extern void (*call_command_hook) PARAMS ((struct cmd_list_element *c,
1064                                           char *cmd, int from_tty));
1065
1066 extern NORETURN void (*error_hook) PARAMS ((void)) ATTR_NORETURN;
1067
1068
1069
1070 /* Inhibit window interface if non-zero. */
1071
1072 extern int use_windows;
1073
1074 /* Symbolic definitions of filename-related things.  */
1075 /* FIXME, this doesn't work very well if host and executable
1076    filesystems conventions are different.  */
1077
1078 #ifndef DIRNAME_SEPARATOR
1079 #define DIRNAME_SEPARATOR ':'
1080 #endif
1081
1082 #ifndef SLASH_P
1083 #if defined(__GO32__)||defined(_WIN32)
1084 #define SLASH_P(X) ((X)=='\\')
1085 #else
1086 #define SLASH_P(X) ((X)=='/')
1087 #endif
1088 #endif
1089
1090 #ifndef SLASH_CHAR
1091 #if defined(__GO32__)||defined(_WIN32)
1092 #define SLASH_CHAR '\\'
1093 #else
1094 #define SLASH_CHAR '/'
1095 #endif
1096 #endif
1097
1098 #ifndef SLASH_STRING
1099 #if defined(__GO32__)||defined(_WIN32)
1100 #define SLASH_STRING "\\"
1101 #else
1102 #define SLASH_STRING "/"
1103 #endif
1104 #endif
1105
1106 #ifndef ROOTED_P
1107 #define ROOTED_P(X) (SLASH_P((X)[0]))
1108 #endif
1109
1110 /* On some systems, PIDGET is defined to extract the inferior pid from
1111    an internal pid that has the thread id and pid in seperate bit
1112    fields.  If not defined, then just use the entire internal pid as
1113    the actual pid. */
1114
1115 #ifndef PIDGET
1116 #define PIDGET(pid) (pid)
1117 #endif
1118
1119 /* If under Cygwin, provide backwards compatibility with older
1120    Cygwin compilers that don't define the current cpp define. */
1121 #ifdef __CYGWIN32__
1122 #ifndef __CYGWIN__
1123 #define __CYGWIN__
1124 #endif
1125 #endif
1126
1127 #endif /* #ifndef DEFS_H */