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) 1986-2016 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
  33 /* The libdecnumber library, on which GDB depends, includes a header file
  34    called gstdint.h instead of relying directly on stdint.h.  GDB, on the
  35    other hand, includes stdint.h directly, relying on the fact that gnulib
  36    generates a copy if the system doesn't provide one or if it is missing
  37    some features.  Unfortunately, gstdint.h and stdint.h cannot be included
  38    at the same time, which may happen when we include a file from
  39    libdecnumber.
  40
  41    The following macro definition effectively prevents the inclusion of
  42    gstdint.h, as all the definitions it provides are guarded against
  43    the GCC_GENERATED_STDINT_H macro.  We already have gnulib/stdint.h
  44    included, so it's ok to blank out gstdint.h.  */
  45 #define GCC_GENERATED_STDINT_H 1
  46
  47 #include <unistd.h>
  48
  49 #include <fcntl.h>
  50
  51 #include "gdb_wchar.h"
  52
  53 #include "ui-file.h"
  54
  55 #include "host-defs.h"
  56
  57 /* Scope types enumerator.  List the types of scopes the compiler will
  58    accept.  */
  59
  60 enum compile_i_scope_types
  61   {
  62     COMPILE_I_INVALID_SCOPE,
  63
  64     /* A simple scope.  Wrap an expression into a simple scope that
  65        takes no arguments, returns no value, and uses the generic
  66        function name "_gdb_expr". */
  67
  68     COMPILE_I_SIMPLE_SCOPE,
  69
  70     /* Do not wrap the expression,
  71        it has to provide function "_gdb_expr" on its own.  */
  72     COMPILE_I_RAW_SCOPE,
  73
  74     /* A printable expression scope.  Wrap an expression into a scope
  75        suitable for the "compile print" command.  It uses the generic
  76        function name "_gdb_expr".  COMPILE_I_PRINT_ADDRESS_SCOPE variant
  77        is the usual one, taking address of the object.
  78        COMPILE_I_PRINT_VALUE_SCOPE is needed for arrays where the array
  79        name already specifies its address.  See get_out_value_type.  */
  80     COMPILE_I_PRINT_ADDRESS_SCOPE,
  81     COMPILE_I_PRINT_VALUE_SCOPE,
  82   };
  83
  84 /* Just in case they're not defined in stdio.h.  */
  85
  86 #ifndef SEEK_SET
  87 #define SEEK_SET 0
  88 #endif
  89 #ifndef SEEK_CUR
  90 #define SEEK_CUR 1
  91 #endif
  92
  93 /* The O_BINARY flag is defined in fcntl.h on some non-Posix platforms.
  94    It is used as an access modifier in calls to open(), where it acts
  95    similarly to the "b" character in fopen()'s MODE argument.  On Posix
  96    platforms it should be a no-op, so it is defined as 0 here.  This
  97    ensures that the symbol may be used freely elsewhere in gdb.  */
  98
  99 #ifndef O_BINARY
 100 #define O_BINARY 0
 101 #endif
 102
 103 #include "hashtab.h"
 104
 105 #ifndef min
 106 #define min(a, b) ((a) < (b) ? (a) : (b))
 107 #endif
 108 #ifndef max
 109 #define max(a, b) ((a) > (b) ? (a) : (b))
 110 #endif
 111
 112 /* * Enable dbx commands if set.  */
 113 extern int dbx_commands;
 114
 115 /* * System root path, used to find libraries etc.  */
 116 extern char *gdb_sysroot;
 117
 118 /* * GDB datadir, used to store data files.  */
 119 extern char *gdb_datadir;
 120
 121 /* * If non-NULL, the possibly relocated path to python's "lib" directory
 122    specified with --with-python.  */
 123 extern char *python_libdir;
 124
 125 /* * Search path for separate debug files.  */
 126 extern char *debug_file_directory;
 127
 128 /* GDB's SIGINT handler basically sets a flag; code that might take a
 129    long time before it gets back to the event loop, and which ought to
 130    be interruptible, checks this flag using the QUIT macro, which, if
 131    GDB has the terminal, throws a quit exception.
 132
 133    In addition to setting a flag, the SIGINT handler also marks a
 134    select/poll-able file descriptor as read-ready.  That is used by
 135    interruptible_select in order to support interrupting blocking I/O
 136    in a race-free manner.
 137
 138    These functions use the extension_language_ops API to allow extension
 139    language(s) and GDB SIGINT handling to coexist seamlessly.  */
 140
 141 /* * Evaluate to non-zero if the quit flag is set, zero otherwise.  This
 142    will clear the quit flag as a side effect.  */
 143 extern int check_quit_flag (void);
 144 /* * Set the quit flag.  */
 145 extern void set_quit_flag (void);
 146
 147 /* The current quit handler (and its type).  This is called from the
 148    QUIT macro.  See default_quit_handler below for default behavior.
 149    Parts of GDB temporarily override this to e.g., completely suppress
 150    Ctrl-C because it would not be safe to throw.  E.g., normally, you
 151    wouldn't want to quit between a RSP command and its response, as
 152    that would break the communication with the target, but you may
 153    still want to intercept the Ctrl-C and offer to disconnect if the
 154    user presses Ctrl-C multiple times while the target is stuck
 155    waiting for the wedged remote stub.  */
 156 typedef void (quit_handler_ftype) (void);
 157 extern quit_handler_ftype *quit_handler;
 158
 159 /* Override the current quit handler.  Sets NEW_QUIT_HANDLER as
 160    current quit handler, and installs a cleanup that when run restores
 161    the previous quit handler.  */
 162 struct cleanup *
 163   make_cleanup_override_quit_handler (quit_handler_ftype *new_quit_handler);
 164
 165 /* The default quit handler.  Checks whether Ctrl-C was pressed, and
 166    if so:
 167
 168      - If GDB owns the terminal, throws a quit exception.
 169
 170      - If GDB does not own the terminal, forwards the Ctrl-C to the
 171        target.
 172 */
 173 extern void default_quit_handler (void);
 174
 175 /* Flag that function quit should call quit_force.  */
 176 extern volatile int sync_quit_force_run;
 177
 178 extern void quit (void);
 179
 180 /* Helper for the QUIT macro.  */
 181
 182 extern void maybe_quit (void);
 183
 184 /* Check whether a Ctrl-C was typed, and if so, call the current quit
 185    handler.  */
 186 #define QUIT maybe_quit ()
 187
 188 /* Set the serial event associated with the quit flag.  */
 189 extern void quit_serial_event_set (void);
 190
 191 /* Clear the serial event associated with the quit flag.  */
 192 extern void quit_serial_event_clear (void);
 193
 194 /* * Languages represented in the symbol table and elsewhere.
 195    This should probably be in language.h, but since enum's can't
 196    be forward declared to satisfy opaque references before their
 197    actual definition, needs to be here.
 198
 199    The constants here are in priority order.  In particular,
 200    demangling is attempted according to this order.
 201
 202    Note that there's ambiguity between the mangling schemes of some of
 203    these languages, so some symbols could be successfully demangled by
 204    several languages.  For that reason, the constants here are sorted
 205    in the order we'll attempt demangling them.  For example: Java and
 206    Rust use C++ mangling, so must come after C++; Ada must come last
 207    (see ada_sniff_from_mangled_name).  */
 208
 209 enum language
 210   {
 211     language_unknown,           /* Language not known */
 212     language_auto,              /* Placeholder for automatic setting */
 213     language_c,                 /* C */
 214     language_objc,              /* Objective-C */
 215     language_cplus,             /* C++ */
 216     language_java,              /* Java */
 217     language_d,                 /* D */
 218     language_go,                /* Go */
 219     language_fortran,           /* Fortran */
 220     language_m2,                /* Modula-2 */
 221     language_asm,               /* Assembly language */
 222     language_pascal,            /* Pascal */
 223     language_opencl,            /* OpenCL */
 224     language_rust,              /* Rust */
 225     language_minimal,           /* All other languages, minimal support only */
 226     language_ada,               /* Ada */
 227     nr_languages
 228   };
 229
 230 /* The number of bits needed to represent all languages, with enough
 231    padding to allow for reasonable growth.  */
 232 #define LANGUAGE_BITS 5
 233 gdb_static_assert (nr_languages <= (1 << LANGUAGE_BITS));
 234
 235 enum precision_type
 236   {
 237     single_precision,
 238     double_precision,
 239     unspecified_precision
 240   };
 241
 242 /* * A generic, not quite boolean, enumeration.  This is used for
 243    set/show commands in which the options are on/off/automatic.  */
 244 enum auto_boolean
 245 {
 246   AUTO_BOOLEAN_TRUE,
 247   AUTO_BOOLEAN_FALSE,
 248   AUTO_BOOLEAN_AUTO
 249 };
 250
 251 /* * Potential ways that a function can return a value of a given
 252    type.  */
 253
 254 enum return_value_convention
 255 {
 256   /* * Where the return value has been squeezed into one or more
 257      registers.  */
 258   RETURN_VALUE_REGISTER_CONVENTION,
 259   /* * Commonly known as the "struct return convention".  The caller
 260      passes an additional hidden first parameter to the caller.  That
 261      parameter contains the address at which the value being returned
 262      should be stored.  While typically, and historically, used for
 263      large structs, this is convention is applied to values of many
 264      different types.  */
 265   RETURN_VALUE_STRUCT_CONVENTION,
 266   /* * Like the "struct return convention" above, but where the ABI
 267      guarantees that the called function stores the address at which
 268      the value being returned is stored in a well-defined location,
 269      such as a register or memory slot in the stack frame.  Don't use
 270      this if the ABI doesn't explicitly guarantees this.  */
 271   RETURN_VALUE_ABI_RETURNS_ADDRESS,
 272   /* * Like the "struct return convention" above, but where the ABI
 273      guarantees that the address at which the value being returned is
 274      stored will be available in a well-defined location, such as a
 275      register or memory slot in the stack frame.  Don't use this if
 276      the ABI doesn't explicitly guarantees this.  */
 277   RETURN_VALUE_ABI_PRESERVES_ADDRESS,
 278 };
 279
 280 /* Needed for various prototypes */
 281
 282 struct symtab;
 283 struct breakpoint;
 284 struct frame_info;
 285 struct gdbarch;
 286 struct value;
 287
 288 /* From main.c.  */
 289
 290 /* This really belong in utils.c (path-utils.c?), but it references some
 291    globals that are currently only available to main.c.  */
 292 extern char *relocate_gdb_directory (const char *initial, int flag);
 293
 294 \f
 295 /* Annotation stuff.  */
 296
 297 extern int annotation_level;    /* in stack.c */
 298 \f
 299
 300 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 301    "const char *" in unistd.h, so we can't declare the argument
 302    as "char *".  */
 303
 304 EXTERN_C char *re_comp (const char *);
 305
 306 /* From symfile.c */
 307
 308 extern void symbol_file_command (char *, int);
 309
 310 /* * Remote targets may wish to use this as their load function.  */
 311 extern void generic_load (const char *name, int from_tty);
 312
 313 /* * Report on STREAM the performance of memory transfer operation,
 314    such as 'load'.
 315    @param DATA_COUNT is the number of bytes transferred.
 316    @param WRITE_COUNT is the number of separate write operations, or 0,
 317    if that information is not available.
 318    @param START_TIME is the time at which an operation was started.
 319    @param END_TIME is the time at which an operation ended.  */
 320 struct timeval;
 321 extern void print_transfer_performance (struct ui_file *stream,
 322                                         unsigned long data_count,
 323                                         unsigned long write_count,
 324                                         const struct timeval *start_time,
 325                                         const struct timeval *end_time);
 326
 327 /* From top.c */
 328
 329 typedef void initialize_file_ftype (void);
 330
 331 extern char *gdb_readline_wrapper (const char *);
 332
 333 extern char *command_line_input (const char *, int, char *);
 334
 335 extern void print_prompt (void);
 336
 337 struct ui;
 338
 339 extern int input_interactive_p (struct ui *);
 340
 341 extern int info_verbose;
 342
 343 /* From printcmd.c */
 344
 345 extern void set_next_address (struct gdbarch *, CORE_ADDR);
 346
 347 extern int print_address_symbolic (struct gdbarch *, CORE_ADDR,
 348                                    struct ui_file *, int, char *);
 349
 350 extern int build_address_symbolic (struct gdbarch *,
 351                                    CORE_ADDR addr,
 352                                    int do_demangle,
 353                                    char **name,
 354                                    int *offset,
 355                                    char **filename,
 356                                    int *line,
 357                                    int *unmapped);
 358
 359 extern void print_address (struct gdbarch *, CORE_ADDR, struct ui_file *);
 360 extern const char *pc_prefix (CORE_ADDR);
 361
 362 /* From source.c */
 363
 364 /* See openp function definition for their description.  */
 365 #define OPF_TRY_CWD_FIRST     0x01
 366 #define OPF_SEARCH_IN_PATH    0x02
 367 #define OPF_RETURN_REALPATH   0x04
 368
 369 extern int openp (const char *, int, const char *, int, char **);
 370
 371 extern int source_full_path_of (const char *, char **);
 372
 373 extern void mod_path (char *, char **);
 374
 375 extern void add_path (char *, char **, int);
 376
 377 extern void directory_switch (char *, int);
 378
 379 extern char *source_path;
 380
 381 extern void init_source_path (void);
 382
 383 /* From exec.c */
 384
 385 /* * Process memory area starting at ADDR with length SIZE.  Area is
 386    readable iff READ is non-zero, writable if WRITE is non-zero,
 387    executable if EXEC is non-zero.  Area is possibly changed against
 388    its original file based copy if MODIFIED is non-zero.  DATA is
 389    passed without changes from a caller.  */
 390
 391 typedef int (*find_memory_region_ftype) (CORE_ADDR addr, unsigned long size,
 392                                          int read, int write, int exec,
 393                                          int modified, void *data);
 394
 395 /* * Possible lvalue types.  Like enum language, this should be in
 396    value.h, but needs to be here for the same reason.  */
 397
 398 enum lval_type
 399   {
 400     /* * Not an lval.  */
 401     not_lval,
 402     /* * In memory.  */
 403     lval_memory,
 404     /* * In a register.  Registers are relative to a frame.  */
 405     lval_register,
 406     /* * In a gdb internal variable.  */
 407     lval_internalvar,
 408     /* * Value encapsulates a callable defined in an extension language.  */
 409     lval_xcallable,
 410     /* * Part of a gdb internal variable (structure field).  */
 411     lval_internalvar_component,
 412     /* * Value's bits are fetched and stored using functions provided
 413        by its creator.  */
 414     lval_computed
 415   };
 416
 417 /* * Control types for commands.  */
 418
 419 enum misc_command_type
 420   {
 421     ok_command,
 422     end_command,
 423     else_command,
 424     nop_command
 425   };
 426
 427 enum command_control_type
 428   {
 429     simple_control,
 430     break_control,
 431     continue_control,
 432     while_control,
 433     if_control,
 434     commands_control,
 435     python_control,
 436     compile_control,
 437     guile_control,
 438     while_stepping_control,
 439     invalid_control
 440   };
 441
 442 /* * Structure for saved commands lines (for breakpoints, defined
 443    commands, etc).  */
 444
 445 struct command_line
 446   {
 447     struct command_line *next;
 448     char *line;
 449     enum command_control_type control_type;
 450     union
 451       {
 452         struct
 453           {
 454             enum compile_i_scope_types scope;
 455             void *scope_data;
 456           }
 457         compile;
 458       }
 459     control_u;
 460     /* * The number of elements in body_list.  */
 461     int body_count;
 462     /* * For composite commands, the nested lists of commands.  For
 463        example, for "if" command this will contain the then branch and
 464        the else branch, if that is available.  */
 465     struct command_line **body_list;
 466   };
 467
 468 extern struct command_line *read_command_lines (char *, int, int,
 469                                                 void (*)(char *, void *),
 470                                                 void *);
 471 extern struct command_line *read_command_lines_1 (char * (*) (void), int,
 472                                                   void (*)(char *, void *),
 473                                                   void *);
 474
 475 extern void free_command_lines (struct command_line **);
 476
 477 /* * Parameters of the "info proc" command.  */
 478
 479 enum info_proc_what
 480   {
 481     /* * Display the default cmdline, cwd and exe outputs.  */
 482     IP_MINIMAL,
 483
 484     /* * Display `info proc mappings'.  */
 485     IP_MAPPINGS,
 486
 487     /* * Display `info proc status'.  */
 488     IP_STATUS,
 489
 490     /* * Display `info proc stat'.  */
 491     IP_STAT,
 492
 493     /* * Display `info proc cmdline'.  */
 494     IP_CMDLINE,
 495
 496     /* * Display `info proc exe'.  */
 497     IP_EXE,
 498
 499     /* * Display `info proc cwd'.  */
 500     IP_CWD,
 501
 502     /* * Display all of the above.  */
 503     IP_ALL
 504   };
 505
 506 /* * String containing the current directory (what getwd would return).  */
 507
 508 extern char *current_directory;
 509
 510 /* * Default radixes for input and output.  Only some values supported.  */
 511 extern unsigned input_radix;
 512 extern unsigned output_radix;
 513
 514 /* * Possibilities for prettyformat parameters to routines which print
 515    things.  Like enum language, this should be in value.h, but needs
 516    to be here for the same reason.  FIXME:  If we can eliminate this
 517    as an arg to LA_VAL_PRINT, then we can probably move it back to
 518    value.h.  */
 519
 520 enum val_prettyformat
 521   {
 522     Val_no_prettyformat = 0,
 523     Val_prettyformat,
 524     /* * Use the default setting which the user has specified.  */
 525     Val_prettyformat_default
 526   };
 527
 528 /* * Optional native machine support.  Non-native (and possibly pure
 529    multi-arch) targets do not need a "nm.h" file.  This will be a
 530    symlink to one of the nm-*.h files, built by the `configure'
 531    script.  */
 532
 533 #ifdef GDB_NM_FILE
 534 #include "nm.h"
 535 #endif
 536
 537 /* Assume that fopen accepts the letter "b" in the mode string.
 538    It is demanded by ISO C9X, and should be supported on all
 539    platforms that claim to have a standard-conforming C library.  On
 540    true POSIX systems it will be ignored and have no effect.  There
 541    may still be systems without a standard-conforming C library where
 542    an ISO C9X compiler (GCC) is available.  Known examples are SunOS
 543    4.x and 4.3BSD.  This assumption means these systems are no longer
 544    supported.  */
 545 #ifndef FOPEN_RB
 546 # include "fopen-bin.h"
 547 #endif
 548
 549 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 550    FIXME: Assumes 2's complement arithmetic.  */
 551
 552 #if !defined (UINT_MAX)
 553 #define UINT_MAX ((unsigned int)(~0))       /* 0xFFFFFFFF for 32-bits */
 554 #endif
 555
 556 #if !defined (INT_MAX)
 557 #define INT_MAX ((int)(UINT_MAX >> 1))      /* 0x7FFFFFFF for 32-bits */
 558 #endif
 559
 560 #if !defined (INT_MIN)
 561 #define INT_MIN ((int)((int) ~0 ^ INT_MAX)) /* 0x80000000 for 32-bits */
 562 #endif
 563
 564 #if !defined (ULONG_MAX)
 565 #define ULONG_MAX ((unsigned long)(~0L))    /* 0xFFFFFFFF for 32-bits */
 566 #endif
 567
 568 #if !defined (LONG_MAX)
 569 #define LONG_MAX ((long)(ULONG_MAX >> 1))   /* 0x7FFFFFFF for 32-bits */
 570 #endif
 571
 572 #if !defined (ULONGEST_MAX)
 573 #define ULONGEST_MAX (~(ULONGEST)0)        /* 0xFFFFFFFFFFFFFFFF for 64-bits */
 574 #endif
 575
 576 #if !defined (LONGEST_MAX)                 /* 0x7FFFFFFFFFFFFFFF for 64-bits */
 577 #define LONGEST_MAX ((LONGEST)(ULONGEST_MAX >> 1))
 578 #endif
 579
 580 /* * Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 581    arguments to a function, number in a value history, register number, etc.)
 582    where the value must not be larger than can fit in an int.  */
 583
 584 extern int longest_to_int (LONGEST);
 585
 586 /* * List of known OS ABIs.  If you change this, make sure to update the
 587    table in osabi.c.  */
 588 enum gdb_osabi
 589 {
 590   GDB_OSABI_UNINITIALIZED = -1, /* For struct gdbarch_info.  */
 591
 592   GDB_OSABI_UNKNOWN = 0,        /* keep this zero */
 593
 594   GDB_OSABI_SVR4,
 595   GDB_OSABI_HURD,
 596   GDB_OSABI_SOLARIS,
 597   GDB_OSABI_LINUX,
 598   GDB_OSABI_FREEBSD_AOUT,
 599   GDB_OSABI_FREEBSD_ELF,
 600   GDB_OSABI_NETBSD_AOUT,
 601   GDB_OSABI_NETBSD_ELF,
 602   GDB_OSABI_OPENBSD_ELF,
 603   GDB_OSABI_WINCE,
 604   GDB_OSABI_GO32,
 605   GDB_OSABI_IRIX,
 606   GDB_OSABI_HPUX_ELF,
 607   GDB_OSABI_HPUX_SOM,
 608   GDB_OSABI_QNXNTO,
 609   GDB_OSABI_CYGWIN,
 610   GDB_OSABI_AIX,
 611   GDB_OSABI_DICOS,
 612   GDB_OSABI_DARWIN,
 613   GDB_OSABI_SYMBIAN,
 614   GDB_OSABI_OPENVMS,
 615   GDB_OSABI_LYNXOS178,
 616   GDB_OSABI_NEWLIB,
 617   GDB_OSABI_SDE,
 618
 619   GDB_OSABI_INVALID             /* keep this last */
 620 };
 621
 622 /* Global functions from other, non-gdb GNU thingies.
 623    Libiberty thingies are no longer declared here.  We include libiberty.h
 624    above, instead.  */
 625
 626 /* From other system libraries */
 627
 628 #ifndef atof
 629 extern double atof (const char *);      /* X3.159-1989  4.10.1.1 */
 630 #endif
 631
 632 /* Dynamic target-system-dependent parameters for GDB.  */
 633 #include "gdbarch.h"
 634
 635 /* * Maximum size of a register.  Something small, but large enough for
 636    all known ISAs.  If it turns out to be too small, make it bigger.  */
 637
 638 enum { MAX_REGISTER_SIZE = 64 };
 639
 640 /* In findvar.c.  */
 641
 642 extern LONGEST extract_signed_integer (const gdb_byte *, int,
 643                                        enum bfd_endian);
 644
 645 extern ULONGEST extract_unsigned_integer (const gdb_byte *, int,
 646                                           enum bfd_endian);
 647
 648 extern int extract_long_unsigned_integer (const gdb_byte *, int,
 649                                           enum bfd_endian, LONGEST *);
 650
 651 extern CORE_ADDR extract_typed_address (const gdb_byte *buf,
 652                                         struct type *type);
 653
 654 extern void store_signed_integer (gdb_byte *, int,
 655                                   enum bfd_endian, LONGEST);
 656
 657 extern void store_unsigned_integer (gdb_byte *, int,
 658                                     enum bfd_endian, ULONGEST);
 659
 660 extern void store_typed_address (gdb_byte *buf, struct type *type,
 661                                  CORE_ADDR addr);
 662
 663 \f
 664 /* From valops.c */
 665
 666 extern int watchdog;
 667
 668 /* Hooks for alternate command interfaces.  */
 669
 670 /* * The name of the interpreter if specified on the command line.  */
 671 extern char *interpreter_p;
 672
 673 struct target_waitstatus;
 674 struct cmd_list_element;
 675
 676 extern void (*deprecated_pre_add_symbol_hook) (const char *);
 677 extern void (*deprecated_post_add_symbol_hook) (void);
 678 extern void (*selected_frame_level_changed_hook) (int);
 679 extern int (*deprecated_ui_loop_hook) (int signo);
 680 extern void (*deprecated_show_load_progress) (const char *section,
 681                                               unsigned long section_sent,
 682                                               unsigned long section_size,
 683                                               unsigned long total_sent,
 684                                               unsigned long total_size);
 685 extern void (*deprecated_print_frame_info_listing_hook) (struct symtab * s,
 686                                                          int line,
 687                                                          int stopline,
 688                                                          int noerror);
 689 extern int (*deprecated_query_hook) (const char *, va_list)
 690      ATTRIBUTE_FPTR_PRINTF(1,0);
 691 extern void (*deprecated_warning_hook) (const char *, va_list)
 692      ATTRIBUTE_FPTR_PRINTF(1,0);
 693 extern void (*deprecated_interactive_hook) (void);
 694 extern void (*deprecated_readline_begin_hook) (char *, ...)
 695      ATTRIBUTE_FPTR_PRINTF_1;
 696 extern char *(*deprecated_readline_hook) (const char *);
 697 extern void (*deprecated_readline_end_hook) (void);
 698 extern void (*deprecated_context_hook) (int);
 699 extern ptid_t (*deprecated_target_wait_hook) (ptid_t ptid,
 700                                               struct target_waitstatus *status,
 701                                               int options);
 702
 703 extern void (*deprecated_attach_hook) (void);
 704 extern void (*deprecated_detach_hook) (void);
 705 extern void (*deprecated_call_command_hook) (struct cmd_list_element * c,
 706                                              char *cmd, int from_tty);
 707
 708 extern int (*deprecated_ui_load_progress_hook) (const char *section,
 709                                                 unsigned long num);
 710
 711 /* If this definition isn't overridden by the header files, assume
 712    that isatty and fileno exist on this system.  */
 713 #ifndef ISATTY
 714 #define ISATTY(FP)      (isatty (fileno (FP)))
 715 #endif
 716
 717 /* * A width that can achieve a better legibility for GDB MI mode.  */
 718 #define GDB_MI_MSG_WIDTH  80
 719
 720 /* From progspace.c */
 721
 722 extern void initialize_progspace (void);
 723 extern void initialize_inferiors (void);
 724
 725 /* * Special block numbers */
 726
 727 enum block_enum
 728 {
 729   GLOBAL_BLOCK = 0,
 730   STATIC_BLOCK = 1,
 731   FIRST_LOCAL_BLOCK = 2
 732 };
 733
 734 #include "utils.h"
 735
 736 #endif /* #ifndef DEFS_H */