gdb/defs.h

   1 /* *INDENT-OFF* */ /* ATTRIBUTE_PRINTF confuses indent, avoid running it
   2                       for now.  */
   3 /* Basic, host-specific, and target-specific definitions for GDB.
   4    Copyright (C) 1986-2014 Free Software Foundation, Inc.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef DEFS_H
  22 #define DEFS_H
  23
  24 #ifdef GDBSERVER
  25 #  error gdbserver should not include gdb/defs.h
  26 #endif
  27
  28 #include "common-defs.h"
  29
  30 #include <sys/types.h>
  31 #include <limits.h>
  32 #include <stdint.h>
  33
  34 /* The libdecnumber library, on which GDB depends, includes a header file
  35    called gstdint.h instead of relying directly on stdint.h.  GDB, on the
  36    other hand, includes stdint.h directly, relying on the fact that gnulib
  37    generates a copy if the system doesn't provide one or if it is missing
  38    some features.  Unfortunately, gstdint.h and stdint.h cannot be included
  39    at the same time, which may happen when we include a file from
  40    libdecnumber.
  41
  42    The following macro definition effectively prevents the inclusion of
  43    gstdint.h, as all the definitions it provides are guarded against
  44    the GCC_GENERATED_STDINT_H macro.  We already have gnulib/stdint.h
  45    included, so it's ok to blank out gstdint.h.  */
  46 #define GCC_GENERATED_STDINT_H 1
  47
  48 #include <unistd.h>
  49
  50 #include <fcntl.h>
  51
  52 #include "gdb_wchar.h"
  53
  54 #include "ui-file.h"
  55
  56 #include "host-defs.h"
  57
  58 /* Just in case they're not defined in stdio.h.  */
  59
  60 #ifndef SEEK_SET
  61 #define SEEK_SET 0
  62 #endif
  63 #ifndef SEEK_CUR
  64 #define SEEK_CUR 1
  65 #endif
  66
  67 /* The O_BINARY flag is defined in fcntl.h on some non-Posix platforms.
  68    It is used as an access modifier in calls to open(), where it acts
  69    similarly to the "b" character in fopen()'s MODE argument.  On Posix
  70    platforms it should be a no-op, so it is defined as 0 here.  This
  71    ensures that the symbol may be used freely elsewhere in gdb.  */
  72
  73 #ifndef O_BINARY
  74 #define O_BINARY 0
  75 #endif
  76
  77 #include "hashtab.h"
  78
  79 #ifndef min
  80 #define min(a, b) ((a) < (b) ? (a) : (b))
  81 #endif
  82 #ifndef max
  83 #define max(a, b) ((a) > (b) ? (a) : (b))
  84 #endif
  85
  86 /* * Enable xdb commands if set.  */
  87 extern int xdb_commands;
  88
  89 /* * Enable dbx commands if set.  */
  90 extern int dbx_commands;
  91
  92 /* * System root path, used to find libraries etc.  */
  93 extern char *gdb_sysroot;
  94
  95 /* * GDB datadir, used to store data files.  */
  96 extern char *gdb_datadir;
  97
  98 /* * If non-NULL, the possibly relocated path to python's "lib" directory
  99    specified with --with-python.  */
 100 extern char *python_libdir;
 101
 102 /* * Search path for separate debug files.  */
 103 extern char *debug_file_directory;
 104
 105 /* GDB has two methods for handling SIGINT.  When immediate_quit is
 106    nonzero, a SIGINT results in an immediate longjmp out of the signal
 107    handler.  Otherwise, SIGINT simply sets a flag; code that might
 108    take a long time, and which ought to be interruptible, checks this
 109    flag using the QUIT macro.
 110
 111    These functions use the extension_language_ops API to allow extension
 112    language(s) and GDB SIGINT handling to coexist seamlessly.  */
 113
 114 /* * Clear the quit flag.  */
 115 extern void clear_quit_flag (void);
 116 /* * Evaluate to non-zero if the quit flag is set, zero otherwise.  This
 117    will clear the quit flag as a side effect.  */
 118 extern int check_quit_flag (void);
 119 /* * Set the quit flag.  */
 120 extern void set_quit_flag (void);
 121
 122 /* Flag that function quit should call quit_force.  */
 123 extern volatile int sync_quit_force_run;
 124
 125 extern int immediate_quit;
 126
 127 extern void quit (void);
 128
 129 /* FIXME: cagney/2000-03-13: It has been suggested that the peformance
 130    benefits of having a ``QUIT'' macro rather than a function are
 131    marginal.  If the overhead of a QUIT function call is proving
 132    significant then its calling frequency should probably be reduced
 133    [kingdon].  A profile analyzing the current situtation is
 134    needed.  */
 135
 136 #define QUIT { \
 137   if (check_quit_flag () || sync_quit_force_run) quit (); \
 138   if (deprecated_interactive_hook) deprecated_interactive_hook (); \
 139 }
 140
 141 /* * Languages represented in the symbol table and elsewhere.
 142    This should probably be in language.h, but since enum's can't
 143    be forward declared to satisfy opaque references before their
 144    actual definition, needs to be here.  */
 145
 146 enum language
 147   {
 148     language_unknown,           /* Language not known */
 149     language_auto,              /* Placeholder for automatic setting */
 150     language_c,                 /* C */
 151     language_cplus,             /* C++ */
 152     language_d,                 /* D */
 153     language_go,                /* Go */
 154     language_objc,              /* Objective-C */
 155     language_java,              /* Java */
 156     language_fortran,           /* Fortran */
 157     language_m2,                /* Modula-2 */
 158     language_asm,               /* Assembly language */
 159     language_pascal,            /* Pascal */
 160     language_ada,               /* Ada */
 161     language_opencl,            /* OpenCL */
 162     language_minimal,           /* All other languages, minimal support only */
 163     nr_languages
 164   };
 165
 166 enum precision_type
 167   {
 168     single_precision,
 169     double_precision,
 170     unspecified_precision
 171   };
 172
 173 /* * A generic, not quite boolean, enumeration.  This is used for
 174    set/show commands in which the options are on/off/automatic.  */
 175 enum auto_boolean
 176 {
 177   AUTO_BOOLEAN_TRUE,
 178   AUTO_BOOLEAN_FALSE,
 179   AUTO_BOOLEAN_AUTO
 180 };
 181
 182 /* * Potential ways that a function can return a value of a given
 183    type.  */
 184
 185 enum return_value_convention
 186 {
 187   /* * Where the return value has been squeezed into one or more
 188      registers.  */
 189   RETURN_VALUE_REGISTER_CONVENTION,
 190   /* * Commonly known as the "struct return convention".  The caller
 191      passes an additional hidden first parameter to the caller.  That
 192      parameter contains the address at which the value being returned
 193      should be stored.  While typically, and historically, used for
 194      large structs, this is convention is applied to values of many
 195      different types.  */
 196   RETURN_VALUE_STRUCT_CONVENTION,
 197   /* * Like the "struct return convention" above, but where the ABI
 198      guarantees that the called function stores the address at which
 199      the value being returned is stored in a well-defined location,
 200      such as a register or memory slot in the stack frame.  Don't use
 201      this if the ABI doesn't explicitly guarantees this.  */
 202   RETURN_VALUE_ABI_RETURNS_ADDRESS,
 203   /* * Like the "struct return convention" above, but where the ABI
 204      guarantees that the address at which the value being returned is
 205      stored will be available in a well-defined location, such as a
 206      register or memory slot in the stack frame.  Don't use this if
 207      the ABI doesn't explicitly guarantees this.  */
 208   RETURN_VALUE_ABI_PRESERVES_ADDRESS,
 209 };
 210
 211 /* Needed for various prototypes */
 212
 213 struct symtab;
 214 struct breakpoint;
 215 struct frame_info;
 216 struct gdbarch;
 217 struct value;
 218
 219 /* From main.c.  */
 220
 221 /* This really belong in utils.c (path-utils.c?), but it references some
 222    globals that are currently only available to main.c.  */
 223 extern char *relocate_gdb_directory (const char *initial, int flag);
 224
 225 \f
 226 /* Annotation stuff.  */
 227
 228 extern int annotation_level;    /* in stack.c */
 229 \f
 230
 231 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 232    "const char *" in unistd.h, so we can't declare the argument
 233    as "char *".  */
 234
 235 extern char *re_comp (const char *);
 236
 237 /* From symfile.c */
 238
 239 extern void symbol_file_command (char *, int);
 240
 241 /* * Remote targets may wish to use this as their load function.  */
 242 extern void generic_load (const char *name, int from_tty);
 243
 244 /* * Report on STREAM the performance of memory transfer operation,
 245    such as 'load'.
 246    @param DATA_COUNT is the number of bytes transferred.
 247    @param WRITE_COUNT is the number of separate write operations, or 0,
 248    if that information is not available.
 249    @param START_TIME is the time at which an operation was started.
 250    @param END_TIME is the time at which an operation ended.  */
 251 struct timeval;
 252 extern void print_transfer_performance (struct ui_file *stream,
 253                                         unsigned long data_count,
 254                                         unsigned long write_count,
 255                                         const struct timeval *start_time,
 256                                         const struct timeval *end_time);
 257
 258 /* From top.c */
 259
 260 typedef void initialize_file_ftype (void);
 261
 262 extern char *gdb_readline (char *);
 263
 264 extern char *gdb_readline_wrapper (char *);
 265
 266 extern char *command_line_input (char *, int, char *);
 267
 268 extern void print_prompt (void);
 269
 270 extern int input_from_terminal_p (void);
 271
 272 extern int info_verbose;
 273
 274 /* From printcmd.c */
 275
 276 extern void set_next_address (struct gdbarch *, CORE_ADDR);
 277
 278 extern int print_address_symbolic (struct gdbarch *, CORE_ADDR,
 279                                    struct ui_file *, int, char *);
 280
 281 extern int build_address_symbolic (struct gdbarch *,
 282                                    CORE_ADDR addr,
 283                                    int do_demangle,
 284                                    char **name,
 285                                    int *offset,
 286                                    char **filename,
 287                                    int *line,
 288                                    int *unmapped);
 289
 290 extern void print_address (struct gdbarch *, CORE_ADDR, struct ui_file *);
 291 extern const char *pc_prefix (CORE_ADDR);
 292
 293 /* From source.c */
 294
 295 /* See openp function definition for their description.  */
 296 #define OPF_TRY_CWD_FIRST     0x01
 297 #define OPF_SEARCH_IN_PATH    0x02
 298 #define OPF_RETURN_REALPATH   0x04
 299
 300 extern int openp (const char *, int, const char *, int, char **);
 301
 302 extern int source_full_path_of (const char *, char **);
 303
 304 extern void mod_path (char *, char **);
 305
 306 extern void add_path (char *, char **, int);
 307
 308 extern void directory_switch (char *, int);
 309
 310 extern char *source_path;
 311
 312 extern void init_source_path (void);
 313
 314 /* From exec.c */
 315
 316 /* * Process memory area starting at ADDR with length SIZE.  Area is
 317    readable iff READ is non-zero, writable if WRITE is non-zero,
 318    executable if EXEC is non-zero.  Area is possibly changed against
 319    its original file based copy if MODIFIED is non-zero.  DATA is
 320    passed without changes from a caller.  */
 321
 322 typedef int (*find_memory_region_ftype) (CORE_ADDR addr, unsigned long size,
 323                                          int read, int write, int exec,
 324                                          int modified, void *data);
 325
 326 /* * Possible lvalue types.  Like enum language, this should be in
 327    value.h, but needs to be here for the same reason.  */
 328
 329 enum lval_type
 330   {
 331     /* * Not an lval.  */
 332     not_lval,
 333     /* * In memory.  */
 334     lval_memory,
 335     /* * In a register.  Registers are relative to a frame.  */
 336     lval_register,
 337     /* * In a gdb internal variable.  */
 338     lval_internalvar,
 339     /* * Value encapsulates a callable defined in an extension language.  */
 340     lval_xcallable,
 341     /* * Part of a gdb internal variable (structure field).  */
 342     lval_internalvar_component,
 343     /* * Value's bits are fetched and stored using functions provided
 344        by its creator.  */
 345     lval_computed
 346   };
 347
 348 /* * Control types for commands.  */
 349
 350 enum misc_command_type
 351   {
 352     ok_command,
 353     end_command,
 354     else_command,
 355     nop_command
 356   };
 357
 358 enum command_control_type
 359   {
 360     simple_control,
 361     break_control,
 362     continue_control,
 363     while_control,
 364     if_control,
 365     commands_control,
 366     python_control,
 367     guile_control,
 368     while_stepping_control,
 369     invalid_control
 370   };
 371
 372 /* * Structure for saved commands lines (for breakpoints, defined
 373    commands, etc).  */
 374
 375 struct command_line
 376   {
 377     struct command_line *next;
 378     char *line;
 379     enum command_control_type control_type;
 380     /* * The number of elements in body_list.  */
 381     int body_count;
 382     /* * For composite commands, the nested lists of commands.  For
 383        example, for "if" command this will contain the then branch and
 384        the else branch, if that is available.  */
 385     struct command_line **body_list;
 386   };
 387
 388 extern struct command_line *read_command_lines (char *, int, int,
 389                                                 void (*)(char *, void *),
 390                                                 void *);
 391 extern struct command_line *read_command_lines_1 (char * (*) (void), int,
 392                                                   void (*)(char *, void *),
 393                                                   void *);
 394
 395 extern void free_command_lines (struct command_line **);
 396
 397 /* * Parameters of the "info proc" command.  */
 398
 399 enum info_proc_what
 400   {
 401     /* * Display the default cmdline, cwd and exe outputs.  */
 402     IP_MINIMAL,
 403
 404     /* * Display `info proc mappings'.  */
 405     IP_MAPPINGS,
 406
 407     /* * Display `info proc status'.  */
 408     IP_STATUS,
 409
 410     /* * Display `info proc stat'.  */
 411     IP_STAT,
 412
 413     /* * Display `info proc cmdline'.  */
 414     IP_CMDLINE,
 415
 416     /* * Display `info proc exe'.  */
 417     IP_EXE,
 418
 419     /* * Display `info proc cwd'.  */
 420     IP_CWD,
 421
 422     /* * Display all of the above.  */
 423     IP_ALL
 424   };
 425
 426 /* * String containing the current directory (what getwd would return).  */
 427
 428 extern char *current_directory;
 429
 430 /* * Default radixes for input and output.  Only some values supported.  */
 431 extern unsigned input_radix;
 432 extern unsigned output_radix;
 433
 434 /* * Possibilities for prettyformat parameters to routines which print
 435    things.  Like enum language, this should be in value.h, but needs
 436    to be here for the same reason.  FIXME:  If we can eliminate this
 437    as an arg to LA_VAL_PRINT, then we can probably move it back to
 438    value.h.  */
 439
 440 enum val_prettyformat
 441   {
 442     Val_no_prettyformat = 0,
 443     Val_prettyformat,
 444     /* * Use the default setting which the user has specified.  */
 445     Val_prettyformat_default
 446   };
 447
 448 /* * Optional native machine support.  Non-native (and possibly pure
 449    multi-arch) targets do not need a "nm.h" file.  This will be a
 450    symlink to one of the nm-*.h files, built by the `configure'
 451    script.  */
 452
 453 #ifdef GDB_NM_FILE
 454 #include "nm.h"
 455 #endif
 456
 457 /* Assume that fopen accepts the letter "b" in the mode string.
 458    It is demanded by ISO C9X, and should be supported on all
 459    platforms that claim to have a standard-conforming C library.  On
 460    true POSIX systems it will be ignored and have no effect.  There
 461    may still be systems without a standard-conforming C library where
 462    an ISO C9X compiler (GCC) is available.  Known examples are SunOS
 463    4.x and 4.3BSD.  This assumption means these systems are no longer
 464    supported.  */
 465 #ifndef FOPEN_RB
 466 # include "fopen-bin.h"
 467 #endif
 468
 469 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 470    FIXME: Assumes 2's complement arithmetic.  */
 471
 472 #if !defined (UINT_MAX)
 473 #define UINT_MAX ((unsigned int)(~0))       /* 0xFFFFFFFF for 32-bits */
 474 #endif
 475
 476 #if !defined (INT_MAX)
 477 #define INT_MAX ((int)(UINT_MAX >> 1))      /* 0x7FFFFFFF for 32-bits */
 478 #endif
 479
 480 #if !defined (INT_MIN)
 481 #define INT_MIN ((int)((int) ~0 ^ INT_MAX)) /* 0x80000000 for 32-bits */
 482 #endif
 483
 484 #if !defined (ULONG_MAX)
 485 #define ULONG_MAX ((unsigned long)(~0L))    /* 0xFFFFFFFF for 32-bits */
 486 #endif
 487
 488 #if !defined (LONG_MAX)
 489 #define LONG_MAX ((long)(ULONG_MAX >> 1))   /* 0x7FFFFFFF for 32-bits */
 490 #endif
 491
 492 #if !defined (ULONGEST_MAX)
 493 #define ULONGEST_MAX (~(ULONGEST)0)        /* 0xFFFFFFFFFFFFFFFF for 64-bits */
 494 #endif
 495
 496 #if !defined (LONGEST_MAX)                 /* 0x7FFFFFFFFFFFFFFF for 64-bits */
 497 #define LONGEST_MAX ((LONGEST)(ULONGEST_MAX >> 1))
 498 #endif
 499
 500 /* * Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 501    arguments to a function, number in a value history, register number, etc.)
 502    where the value must not be larger than can fit in an int.  */
 503
 504 extern int longest_to_int (LONGEST);
 505
 506 /* * List of known OS ABIs.  If you change this, make sure to update the
 507    table in osabi.c.  */
 508 enum gdb_osabi
 509 {
 510   GDB_OSABI_UNINITIALIZED = -1, /* For struct gdbarch_info.  */
 511
 512   GDB_OSABI_UNKNOWN = 0,        /* keep this zero */
 513
 514   GDB_OSABI_SVR4,
 515   GDB_OSABI_HURD,
 516   GDB_OSABI_SOLARIS,
 517   GDB_OSABI_LINUX,
 518   GDB_OSABI_FREEBSD_AOUT,
 519   GDB_OSABI_FREEBSD_ELF,
 520   GDB_OSABI_NETBSD_AOUT,
 521   GDB_OSABI_NETBSD_ELF,
 522   GDB_OSABI_OPENBSD_ELF,
 523   GDB_OSABI_WINCE,
 524   GDB_OSABI_GO32,
 525   GDB_OSABI_IRIX,
 526   GDB_OSABI_HPUX_ELF,
 527   GDB_OSABI_HPUX_SOM,
 528   GDB_OSABI_QNXNTO,
 529   GDB_OSABI_CYGWIN,
 530   GDB_OSABI_AIX,
 531   GDB_OSABI_DICOS,
 532   GDB_OSABI_DARWIN,
 533   GDB_OSABI_SYMBIAN,
 534   GDB_OSABI_OPENVMS,
 535   GDB_OSABI_LYNXOS178,
 536   GDB_OSABI_NEWLIB,
 537
 538   GDB_OSABI_INVALID             /* keep this last */
 539 };
 540
 541 /* Global functions from other, non-gdb GNU thingies.
 542    Libiberty thingies are no longer declared here.  We include libiberty.h
 543    above, instead.  */
 544
 545 /* From other system libraries */
 546
 547 #ifndef atof
 548 extern double atof (const char *);      /* X3.159-1989  4.10.1.1 */
 549 #endif
 550
 551 /* Various possibilities for alloca.  */
 552 #ifndef alloca
 553 #ifdef __GNUC__
 554 #define alloca __builtin_alloca
 555 #else /* Not GNU C */
 556 #ifdef HAVE_ALLOCA_H
 557 #include <alloca.h>
 558 #else
 559 #ifdef _AIX
 560 #pragma alloca
 561 #else
 562
 563 /* We need to be careful not to declare this in a way which conflicts with
 564    bison.  Bison never declares it as char *, but under various circumstances
 565    (like __hpux) we need to use void *.  */
 566 extern void *alloca ();
 567 #endif /* Not _AIX */
 568 #endif /* Not HAVE_ALLOCA_H */
 569 #endif /* Not GNU C */
 570 #endif /* alloca not defined */
 571
 572 /* Dynamic target-system-dependent parameters for GDB.  */
 573 #include "gdbarch.h"
 574
 575 /* * Maximum size of a register.  Something small, but large enough for
 576    all known ISAs.  If it turns out to be too small, make it bigger.  */
 577
 578 enum { MAX_REGISTER_SIZE = 64 };
 579
 580 /* Static target-system-dependent parameters for GDB.  */
 581
 582 /* * Number of bits in a char or unsigned char for the target machine.
 583    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 584 #if !defined (TARGET_CHAR_BIT)
 585 #define TARGET_CHAR_BIT 8
 586 #endif
 587
 588 /* * If we picked up a copy of CHAR_BIT from a configuration file
 589    (which may get it by including <limits.h>) then use it to set
 590    the number of bits in a host char.  If not, use the same size
 591    as the target.  */
 592
 593 #if defined (CHAR_BIT)
 594 #define HOST_CHAR_BIT CHAR_BIT
 595 #else
 596 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 597 #endif
 598
 599 /* In findvar.c.  */
 600
 601 extern LONGEST extract_signed_integer (const gdb_byte *, int,
 602                                        enum bfd_endian);
 603
 604 extern ULONGEST extract_unsigned_integer (const gdb_byte *, int,
 605                                           enum bfd_endian);
 606
 607 extern int extract_long_unsigned_integer (const gdb_byte *, int,
 608                                           enum bfd_endian, LONGEST *);
 609
 610 extern CORE_ADDR extract_typed_address (const gdb_byte *buf,
 611                                         struct type *type);
 612
 613 extern void store_signed_integer (gdb_byte *, int,
 614                                   enum bfd_endian, LONGEST);
 615
 616 extern void store_unsigned_integer (gdb_byte *, int,
 617                                     enum bfd_endian, ULONGEST);
 618
 619 extern void store_typed_address (gdb_byte *buf, struct type *type,
 620                                  CORE_ADDR addr);
 621
 622 \f
 623 /* From valops.c */
 624
 625 extern int watchdog;
 626
 627 /* Hooks for alternate command interfaces.  */
 628
 629 /* * The name of the interpreter if specified on the command line.  */
 630 extern char *interpreter_p;
 631
 632 /* If a given interpreter matches INTERPRETER_P then it should update
 633    deprecated_init_ui_hook with the per-interpreter implementation.  */
 634 /* FIXME: deprecated_init_ui_hook should be moved here.  */
 635
 636 struct target_waitstatus;
 637 struct cmd_list_element;
 638
 639 extern void (*deprecated_pre_add_symbol_hook) (const char *);
 640 extern void (*deprecated_post_add_symbol_hook) (void);
 641 extern void (*selected_frame_level_changed_hook) (int);
 642 extern int (*deprecated_ui_loop_hook) (int signo);
 643 extern void (*deprecated_init_ui_hook) (char *argv0);
 644 extern void (*deprecated_show_load_progress) (const char *section,
 645                                               unsigned long section_sent,
 646                                               unsigned long section_size,
 647                                               unsigned long total_sent,
 648                                               unsigned long total_size);
 649 extern void (*deprecated_print_frame_info_listing_hook) (struct symtab * s,
 650                                                          int line,
 651                                                          int stopline,
 652                                                          int noerror);
 653 extern int (*deprecated_query_hook) (const char *, va_list)
 654      ATTRIBUTE_FPTR_PRINTF(1,0);
 655 extern void (*deprecated_warning_hook) (const char *, va_list)
 656      ATTRIBUTE_FPTR_PRINTF(1,0);
 657 extern void (*deprecated_interactive_hook) (void);
 658 extern void (*deprecated_readline_begin_hook) (char *, ...)
 659      ATTRIBUTE_FPTR_PRINTF_1;
 660 extern char *(*deprecated_readline_hook) (char *);
 661 extern void (*deprecated_readline_end_hook) (void);
 662 extern void (*deprecated_register_changed_hook) (int regno);
 663 extern void (*deprecated_context_hook) (int);
 664 extern ptid_t (*deprecated_target_wait_hook) (ptid_t ptid,
 665                                               struct target_waitstatus *status,
 666                                               int options);
 667
 668 extern void (*deprecated_attach_hook) (void);
 669 extern void (*deprecated_detach_hook) (void);
 670 extern void (*deprecated_call_command_hook) (struct cmd_list_element * c,
 671                                              char *cmd, int from_tty);
 672
 673 extern int (*deprecated_ui_load_progress_hook) (const char *section,
 674                                                 unsigned long num);
 675
 676 /* If this definition isn't overridden by the header files, assume
 677    that isatty and fileno exist on this system.  */
 678 #ifndef ISATTY
 679 #define ISATTY(FP)      (isatty (fileno (FP)))
 680 #endif
 681
 682 /* * A width that can achieve a better legibility for GDB MI mode.  */
 683 #define GDB_MI_MSG_WIDTH  80
 684
 685 /* From progspace.c */
 686
 687 extern void initialize_progspace (void);
 688 extern void initialize_inferiors (void);
 689
 690 /* * Special block numbers */
 691
 692 enum block_enum
 693 {
 694   GLOBAL_BLOCK = 0,
 695   STATIC_BLOCK = 1,
 696   FIRST_LOCAL_BLOCK = 2
 697 };
 698
 699 #include "utils.h"
 700
 701 #endif /* #ifndef DEFS_H */