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 /* Scope types enumerator.  List the types of scopes the compiler will
  59    accept.  */
  60
  61 enum compile_i_scope_types
  62   {
  63     COMPILE_I_INVALID_SCOPE,
  64
  65     /* A simple scope.  Wrap an expression into a simple scope that
  66        takes no arguments, returns no value, and uses the generic
  67        function name "_gdb_expr". */
  68
  69     COMPILE_I_SIMPLE_SCOPE,
  70
  71     /* Do not wrap the expression,
  72        it has to provide function "_gdb_expr" on its own.  */
  73     COMPILE_I_RAW_SCOPE,
  74   };
  75
  76 /* Just in case they're not defined in stdio.h.  */
  77
  78 #ifndef SEEK_SET
  79 #define SEEK_SET 0
  80 #endif
  81 #ifndef SEEK_CUR
  82 #define SEEK_CUR 1
  83 #endif
  84
  85 /* The O_BINARY flag is defined in fcntl.h on some non-Posix platforms.
  86    It is used as an access modifier in calls to open(), where it acts
  87    similarly to the "b" character in fopen()'s MODE argument.  On Posix
  88    platforms it should be a no-op, so it is defined as 0 here.  This
  89    ensures that the symbol may be used freely elsewhere in gdb.  */
  90
  91 #ifndef O_BINARY
  92 #define O_BINARY 0
  93 #endif
  94
  95 #include "hashtab.h"
  96
  97 #ifndef min
  98 #define min(a, b) ((a) < (b) ? (a) : (b))
  99 #endif
 100 #ifndef max
 101 #define max(a, b) ((a) > (b) ? (a) : (b))
 102 #endif
 103
 104 /* * Enable xdb commands if set.  */
 105 extern int xdb_commands;
 106
 107 /* * Enable dbx commands if set.  */
 108 extern int dbx_commands;
 109
 110 /* * System root path, used to find libraries etc.  */
 111 extern char *gdb_sysroot;
 112
 113 /* * GDB datadir, used to store data files.  */
 114 extern char *gdb_datadir;
 115
 116 /* * If non-NULL, the possibly relocated path to python's "lib" directory
 117    specified with --with-python.  */
 118 extern char *python_libdir;
 119
 120 /* * Search path for separate debug files.  */
 121 extern char *debug_file_directory;
 122
 123 /* GDB has two methods for handling SIGINT.  When immediate_quit is
 124    nonzero, a SIGINT results in an immediate longjmp out of the signal
 125    handler.  Otherwise, SIGINT simply sets a flag; code that might
 126    take a long time, and which ought to be interruptible, checks this
 127    flag using the QUIT macro.
 128
 129    These functions use the extension_language_ops API to allow extension
 130    language(s) and GDB SIGINT handling to coexist seamlessly.  */
 131
 132 /* * Clear the quit flag.  */
 133 extern void clear_quit_flag (void);
 134 /* * Evaluate to non-zero if the quit flag is set, zero otherwise.  This
 135    will clear the quit flag as a side effect.  */
 136 extern int check_quit_flag (void);
 137 /* * Set the quit flag.  */
 138 extern void set_quit_flag (void);
 139
 140 /* Flag that function quit should call quit_force.  */
 141 extern volatile int sync_quit_force_run;
 142
 143 extern int immediate_quit;
 144
 145 extern void quit (void);
 146
 147 /* FIXME: cagney/2000-03-13: It has been suggested that the peformance
 148    benefits of having a ``QUIT'' macro rather than a function are
 149    marginal.  If the overhead of a QUIT function call is proving
 150    significant then its calling frequency should probably be reduced
 151    [kingdon].  A profile analyzing the current situtation is
 152    needed.  */
 153
 154 #define QUIT { \
 155   if (check_quit_flag () || sync_quit_force_run) quit (); \
 156   if (deprecated_interactive_hook) deprecated_interactive_hook (); \
 157 }
 158
 159 /* * Languages represented in the symbol table and elsewhere.
 160    This should probably be in language.h, but since enum's can't
 161    be forward declared to satisfy opaque references before their
 162    actual definition, needs to be here.  */
 163
 164 enum language
 165   {
 166     language_unknown,           /* Language not known */
 167     language_auto,              /* Placeholder for automatic setting */
 168     language_c,                 /* C */
 169     language_cplus,             /* C++ */
 170     language_d,                 /* D */
 171     language_go,                /* Go */
 172     language_objc,              /* Objective-C */
 173     language_java,              /* Java */
 174     language_fortran,           /* Fortran */
 175     language_m2,                /* Modula-2 */
 176     language_asm,               /* Assembly language */
 177     language_pascal,            /* Pascal */
 178     language_ada,               /* Ada */
 179     language_opencl,            /* OpenCL */
 180     language_minimal,           /* All other languages, minimal support only */
 181     nr_languages
 182   };
 183
 184 enum precision_type
 185   {
 186     single_precision,
 187     double_precision,
 188     unspecified_precision
 189   };
 190
 191 /* * A generic, not quite boolean, enumeration.  This is used for
 192    set/show commands in which the options are on/off/automatic.  */
 193 enum auto_boolean
 194 {
 195   AUTO_BOOLEAN_TRUE,
 196   AUTO_BOOLEAN_FALSE,
 197   AUTO_BOOLEAN_AUTO
 198 };
 199
 200 /* * Potential ways that a function can return a value of a given
 201    type.  */
 202
 203 enum return_value_convention
 204 {
 205   /* * Where the return value has been squeezed into one or more
 206      registers.  */
 207   RETURN_VALUE_REGISTER_CONVENTION,
 208   /* * Commonly known as the "struct return convention".  The caller
 209      passes an additional hidden first parameter to the caller.  That
 210      parameter contains the address at which the value being returned
 211      should be stored.  While typically, and historically, used for
 212      large structs, this is convention is applied to values of many
 213      different types.  */
 214   RETURN_VALUE_STRUCT_CONVENTION,
 215   /* * Like the "struct return convention" above, but where the ABI
 216      guarantees that the called function stores the address at which
 217      the value being returned is stored in a well-defined location,
 218      such as a register or memory slot in the stack frame.  Don't use
 219      this if the ABI doesn't explicitly guarantees this.  */
 220   RETURN_VALUE_ABI_RETURNS_ADDRESS,
 221   /* * Like the "struct return convention" above, but where the ABI
 222      guarantees that the address at which the value being returned is
 223      stored will be available in a well-defined location, such as a
 224      register or memory slot in the stack frame.  Don't use this if
 225      the ABI doesn't explicitly guarantees this.  */
 226   RETURN_VALUE_ABI_PRESERVES_ADDRESS,
 227 };
 228
 229 /* Needed for various prototypes */
 230
 231 struct symtab;
 232 struct breakpoint;
 233 struct frame_info;
 234 struct gdbarch;
 235 struct value;
 236
 237 /* From main.c.  */
 238
 239 /* This really belong in utils.c (path-utils.c?), but it references some
 240    globals that are currently only available to main.c.  */
 241 extern char *relocate_gdb_directory (const char *initial, int flag);
 242
 243 \f
 244 /* Annotation stuff.  */
 245
 246 extern int annotation_level;    /* in stack.c */
 247 \f
 248
 249 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 250    "const char *" in unistd.h, so we can't declare the argument
 251    as "char *".  */
 252
 253 extern char *re_comp (const char *);
 254
 255 /* From symfile.c */
 256
 257 extern void symbol_file_command (char *, int);
 258
 259 /* * Remote targets may wish to use this as their load function.  */
 260 extern void generic_load (const char *name, int from_tty);
 261
 262 /* * Report on STREAM the performance of memory transfer operation,
 263    such as 'load'.
 264    @param DATA_COUNT is the number of bytes transferred.
 265    @param WRITE_COUNT is the number of separate write operations, or 0,
 266    if that information is not available.
 267    @param START_TIME is the time at which an operation was started.
 268    @param END_TIME is the time at which an operation ended.  */
 269 struct timeval;
 270 extern void print_transfer_performance (struct ui_file *stream,
 271                                         unsigned long data_count,
 272                                         unsigned long write_count,
 273                                         const struct timeval *start_time,
 274                                         const struct timeval *end_time);
 275
 276 /* From top.c */
 277
 278 typedef void initialize_file_ftype (void);
 279
 280 extern char *gdb_readline (char *);
 281
 282 extern char *gdb_readline_wrapper (char *);
 283
 284 extern char *command_line_input (char *, int, char *);
 285
 286 extern void print_prompt (void);
 287
 288 extern int input_from_terminal_p (void);
 289
 290 extern int info_verbose;
 291
 292 /* From printcmd.c */
 293
 294 extern void set_next_address (struct gdbarch *, CORE_ADDR);
 295
 296 extern int print_address_symbolic (struct gdbarch *, CORE_ADDR,
 297                                    struct ui_file *, int, char *);
 298
 299 extern int build_address_symbolic (struct gdbarch *,
 300                                    CORE_ADDR addr,
 301                                    int do_demangle,
 302                                    char **name,
 303                                    int *offset,
 304                                    char **filename,
 305                                    int *line,
 306                                    int *unmapped);
 307
 308 extern void print_address (struct gdbarch *, CORE_ADDR, struct ui_file *);
 309 extern const char *pc_prefix (CORE_ADDR);
 310
 311 /* From source.c */
 312
 313 /* See openp function definition for their description.  */
 314 #define OPF_TRY_CWD_FIRST     0x01
 315 #define OPF_SEARCH_IN_PATH    0x02
 316 #define OPF_RETURN_REALPATH   0x04
 317
 318 extern int openp (const char *, int, const char *, int, char **);
 319
 320 extern int source_full_path_of (const char *, char **);
 321
 322 extern void mod_path (char *, char **);
 323
 324 extern void add_path (char *, char **, int);
 325
 326 extern void directory_switch (char *, int);
 327
 328 extern char *source_path;
 329
 330 extern void init_source_path (void);
 331
 332 /* From exec.c */
 333
 334 /* * Process memory area starting at ADDR with length SIZE.  Area is
 335    readable iff READ is non-zero, writable if WRITE is non-zero,
 336    executable if EXEC is non-zero.  Area is possibly changed against
 337    its original file based copy if MODIFIED is non-zero.  DATA is
 338    passed without changes from a caller.  */
 339
 340 typedef int (*find_memory_region_ftype) (CORE_ADDR addr, unsigned long size,
 341                                          int read, int write, int exec,
 342                                          int modified, void *data);
 343
 344 /* * Possible lvalue types.  Like enum language, this should be in
 345    value.h, but needs to be here for the same reason.  */
 346
 347 enum lval_type
 348   {
 349     /* * Not an lval.  */
 350     not_lval,
 351     /* * In memory.  */
 352     lval_memory,
 353     /* * In a register.  Registers are relative to a frame.  */
 354     lval_register,
 355     /* * In a gdb internal variable.  */
 356     lval_internalvar,
 357     /* * Value encapsulates a callable defined in an extension language.  */
 358     lval_xcallable,
 359     /* * Part of a gdb internal variable (structure field).  */
 360     lval_internalvar_component,
 361     /* * Value's bits are fetched and stored using functions provided
 362        by its creator.  */
 363     lval_computed
 364   };
 365
 366 /* * Control types for commands.  */
 367
 368 enum misc_command_type
 369   {
 370     ok_command,
 371     end_command,
 372     else_command,
 373     nop_command
 374   };
 375
 376 enum command_control_type
 377   {
 378     simple_control,
 379     break_control,
 380     continue_control,
 381     while_control,
 382     if_control,
 383     commands_control,
 384     python_control,
 385     compile_control,
 386     guile_control,
 387     while_stepping_control,
 388     invalid_control
 389   };
 390
 391 /* * Structure for saved commands lines (for breakpoints, defined
 392    commands, etc).  */
 393
 394 struct command_line
 395   {
 396     struct command_line *next;
 397     char *line;
 398     enum command_control_type control_type;
 399     union
 400       {
 401         struct
 402           {
 403             enum compile_i_scope_types scope;
 404           }
 405         compile;
 406       }
 407     control_u;
 408     /* * The number of elements in body_list.  */
 409     int body_count;
 410     /* * For composite commands, the nested lists of commands.  For
 411        example, for "if" command this will contain the then branch and
 412        the else branch, if that is available.  */
 413     struct command_line **body_list;
 414   };
 415
 416 extern struct command_line *read_command_lines (char *, int, int,
 417                                                 void (*)(char *, void *),
 418                                                 void *);
 419 extern struct command_line *read_command_lines_1 (char * (*) (void), int,
 420                                                   void (*)(char *, void *),
 421                                                   void *);
 422
 423 extern void free_command_lines (struct command_line **);
 424
 425 /* * Parameters of the "info proc" command.  */
 426
 427 enum info_proc_what
 428   {
 429     /* * Display the default cmdline, cwd and exe outputs.  */
 430     IP_MINIMAL,
 431
 432     /* * Display `info proc mappings'.  */
 433     IP_MAPPINGS,
 434
 435     /* * Display `info proc status'.  */
 436     IP_STATUS,
 437
 438     /* * Display `info proc stat'.  */
 439     IP_STAT,
 440
 441     /* * Display `info proc cmdline'.  */
 442     IP_CMDLINE,
 443
 444     /* * Display `info proc exe'.  */
 445     IP_EXE,
 446
 447     /* * Display `info proc cwd'.  */
 448     IP_CWD,
 449
 450     /* * Display all of the above.  */
 451     IP_ALL
 452   };
 453
 454 /* * String containing the current directory (what getwd would return).  */
 455
 456 extern char *current_directory;
 457
 458 /* * Default radixes for input and output.  Only some values supported.  */
 459 extern unsigned input_radix;
 460 extern unsigned output_radix;
 461
 462 /* * Possibilities for prettyformat parameters to routines which print
 463    things.  Like enum language, this should be in value.h, but needs
 464    to be here for the same reason.  FIXME:  If we can eliminate this
 465    as an arg to LA_VAL_PRINT, then we can probably move it back to
 466    value.h.  */
 467
 468 enum val_prettyformat
 469   {
 470     Val_no_prettyformat = 0,
 471     Val_prettyformat,
 472     /* * Use the default setting which the user has specified.  */
 473     Val_prettyformat_default
 474   };
 475
 476 /* * Optional native machine support.  Non-native (and possibly pure
 477    multi-arch) targets do not need a "nm.h" file.  This will be a
 478    symlink to one of the nm-*.h files, built by the `configure'
 479    script.  */
 480
 481 #ifdef GDB_NM_FILE
 482 #include "nm.h"
 483 #endif
 484
 485 /* Assume that fopen accepts the letter "b" in the mode string.
 486    It is demanded by ISO C9X, and should be supported on all
 487    platforms that claim to have a standard-conforming C library.  On
 488    true POSIX systems it will be ignored and have no effect.  There
 489    may still be systems without a standard-conforming C library where
 490    an ISO C9X compiler (GCC) is available.  Known examples are SunOS
 491    4.x and 4.3BSD.  This assumption means these systems are no longer
 492    supported.  */
 493 #ifndef FOPEN_RB
 494 # include "fopen-bin.h"
 495 #endif
 496
 497 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 498    FIXME: Assumes 2's complement arithmetic.  */
 499
 500 #if !defined (UINT_MAX)
 501 #define UINT_MAX ((unsigned int)(~0))       /* 0xFFFFFFFF for 32-bits */
 502 #endif
 503
 504 #if !defined (INT_MAX)
 505 #define INT_MAX ((int)(UINT_MAX >> 1))      /* 0x7FFFFFFF for 32-bits */
 506 #endif
 507
 508 #if !defined (INT_MIN)
 509 #define INT_MIN ((int)((int) ~0 ^ INT_MAX)) /* 0x80000000 for 32-bits */
 510 #endif
 511
 512 #if !defined (ULONG_MAX)
 513 #define ULONG_MAX ((unsigned long)(~0L))    /* 0xFFFFFFFF for 32-bits */
 514 #endif
 515
 516 #if !defined (LONG_MAX)
 517 #define LONG_MAX ((long)(ULONG_MAX >> 1))   /* 0x7FFFFFFF for 32-bits */
 518 #endif
 519
 520 #if !defined (ULONGEST_MAX)
 521 #define ULONGEST_MAX (~(ULONGEST)0)        /* 0xFFFFFFFFFFFFFFFF for 64-bits */
 522 #endif
 523
 524 #if !defined (LONGEST_MAX)                 /* 0x7FFFFFFFFFFFFFFF for 64-bits */
 525 #define LONGEST_MAX ((LONGEST)(ULONGEST_MAX >> 1))
 526 #endif
 527
 528 /* * Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 529    arguments to a function, number in a value history, register number, etc.)
 530    where the value must not be larger than can fit in an int.  */
 531
 532 extern int longest_to_int (LONGEST);
 533
 534 /* * List of known OS ABIs.  If you change this, make sure to update the
 535    table in osabi.c.  */
 536 enum gdb_osabi
 537 {
 538   GDB_OSABI_UNINITIALIZED = -1, /* For struct gdbarch_info.  */
 539
 540   GDB_OSABI_UNKNOWN = 0,        /* keep this zero */
 541
 542   GDB_OSABI_SVR4,
 543   GDB_OSABI_HURD,
 544   GDB_OSABI_SOLARIS,
 545   GDB_OSABI_LINUX,
 546   GDB_OSABI_FREEBSD_AOUT,
 547   GDB_OSABI_FREEBSD_ELF,
 548   GDB_OSABI_NETBSD_AOUT,
 549   GDB_OSABI_NETBSD_ELF,
 550   GDB_OSABI_OPENBSD_ELF,
 551   GDB_OSABI_WINCE,
 552   GDB_OSABI_GO32,
 553   GDB_OSABI_IRIX,
 554   GDB_OSABI_HPUX_ELF,
 555   GDB_OSABI_HPUX_SOM,
 556   GDB_OSABI_QNXNTO,
 557   GDB_OSABI_CYGWIN,
 558   GDB_OSABI_AIX,
 559   GDB_OSABI_DICOS,
 560   GDB_OSABI_DARWIN,
 561   GDB_OSABI_SYMBIAN,
 562   GDB_OSABI_OPENVMS,
 563   GDB_OSABI_LYNXOS178,
 564   GDB_OSABI_NEWLIB,
 565
 566   GDB_OSABI_INVALID             /* keep this last */
 567 };
 568
 569 /* Global functions from other, non-gdb GNU thingies.
 570    Libiberty thingies are no longer declared here.  We include libiberty.h
 571    above, instead.  */
 572
 573 /* From other system libraries */
 574
 575 #ifndef atof
 576 extern double atof (const char *);      /* X3.159-1989  4.10.1.1 */
 577 #endif
 578
 579 /* Dynamic target-system-dependent parameters for GDB.  */
 580 #include "gdbarch.h"
 581
 582 /* * Maximum size of a register.  Something small, but large enough for
 583    all known ISAs.  If it turns out to be too small, make it bigger.  */
 584
 585 enum { MAX_REGISTER_SIZE = 64 };
 586
 587 /* Static target-system-dependent parameters for GDB.  */
 588
 589 /* * Number of bits in a char or unsigned char for the target machine.
 590    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 591 #if !defined (TARGET_CHAR_BIT)
 592 #define TARGET_CHAR_BIT 8
 593 #endif
 594
 595 /* * If we picked up a copy of CHAR_BIT from a configuration file
 596    (which may get it by including <limits.h>) then use it to set
 597    the number of bits in a host char.  If not, use the same size
 598    as the target.  */
 599
 600 #if defined (CHAR_BIT)
 601 #define HOST_CHAR_BIT CHAR_BIT
 602 #else
 603 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 604 #endif
 605
 606 /* In findvar.c.  */
 607
 608 extern LONGEST extract_signed_integer (const gdb_byte *, int,
 609                                        enum bfd_endian);
 610
 611 extern ULONGEST extract_unsigned_integer (const gdb_byte *, int,
 612                                           enum bfd_endian);
 613
 614 extern int extract_long_unsigned_integer (const gdb_byte *, int,
 615                                           enum bfd_endian, LONGEST *);
 616
 617 extern CORE_ADDR extract_typed_address (const gdb_byte *buf,
 618                                         struct type *type);
 619
 620 extern void store_signed_integer (gdb_byte *, int,
 621                                   enum bfd_endian, LONGEST);
 622
 623 extern void store_unsigned_integer (gdb_byte *, int,
 624                                     enum bfd_endian, ULONGEST);
 625
 626 extern void store_typed_address (gdb_byte *buf, struct type *type,
 627                                  CORE_ADDR addr);
 628
 629 \f
 630 /* From valops.c */
 631
 632 extern int watchdog;
 633
 634 /* Hooks for alternate command interfaces.  */
 635
 636 /* * The name of the interpreter if specified on the command line.  */
 637 extern char *interpreter_p;
 638
 639 /* If a given interpreter matches INTERPRETER_P then it should update
 640    deprecated_init_ui_hook with the per-interpreter implementation.  */
 641 /* FIXME: deprecated_init_ui_hook should be moved here.  */
 642
 643 struct target_waitstatus;
 644 struct cmd_list_element;
 645
 646 extern void (*deprecated_pre_add_symbol_hook) (const char *);
 647 extern void (*deprecated_post_add_symbol_hook) (void);
 648 extern void (*selected_frame_level_changed_hook) (int);
 649 extern int (*deprecated_ui_loop_hook) (int signo);
 650 extern void (*deprecated_init_ui_hook) (char *argv0);
 651 extern void (*deprecated_show_load_progress) (const char *section,
 652                                               unsigned long section_sent,
 653                                               unsigned long section_size,
 654                                               unsigned long total_sent,
 655                                               unsigned long total_size);
 656 extern void (*deprecated_print_frame_info_listing_hook) (struct symtab * s,
 657                                                          int line,
 658                                                          int stopline,
 659                                                          int noerror);
 660 extern int (*deprecated_query_hook) (const char *, va_list)
 661      ATTRIBUTE_FPTR_PRINTF(1,0);
 662 extern void (*deprecated_warning_hook) (const char *, va_list)
 663      ATTRIBUTE_FPTR_PRINTF(1,0);
 664 extern void (*deprecated_interactive_hook) (void);
 665 extern void (*deprecated_readline_begin_hook) (char *, ...)
 666      ATTRIBUTE_FPTR_PRINTF_1;
 667 extern char *(*deprecated_readline_hook) (char *);
 668 extern void (*deprecated_readline_end_hook) (void);
 669 extern void (*deprecated_register_changed_hook) (int regno);
 670 extern void (*deprecated_context_hook) (int);
 671 extern ptid_t (*deprecated_target_wait_hook) (ptid_t ptid,
 672                                               struct target_waitstatus *status,
 673                                               int options);
 674
 675 extern void (*deprecated_attach_hook) (void);
 676 extern void (*deprecated_detach_hook) (void);
 677 extern void (*deprecated_call_command_hook) (struct cmd_list_element * c,
 678                                              char *cmd, int from_tty);
 679
 680 extern int (*deprecated_ui_load_progress_hook) (const char *section,
 681                                                 unsigned long num);
 682
 683 /* If this definition isn't overridden by the header files, assume
 684    that isatty and fileno exist on this system.  */
 685 #ifndef ISATTY
 686 #define ISATTY(FP)      (isatty (fileno (FP)))
 687 #endif
 688
 689 /* * A width that can achieve a better legibility for GDB MI mode.  */
 690 #define GDB_MI_MSG_WIDTH  80
 691
 692 /* From progspace.c */
 693
 694 extern void initialize_progspace (void);
 695 extern void initialize_inferiors (void);
 696
 697 /* * Special block numbers */
 698
 699 enum block_enum
 700 {
 701   GLOBAL_BLOCK = 0,
 702   STATIC_BLOCK = 1,
 703   FIRST_LOCAL_BLOCK = 2
 704 };
 705
 706 #include "utils.h"
 707
 708 #endif /* #ifndef DEFS_H */