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 #include "common/enum-flags.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     /* A printable expression scope.  Wrap an expression into a scope
  76        suitable for the "compile print" command.  It uses the generic
  77        function name "_gdb_expr".  COMPILE_I_PRINT_ADDRESS_SCOPE variant
  78        is the usual one, taking address of the object.
  79        COMPILE_I_PRINT_VALUE_SCOPE is needed for arrays where the array
  80        name already specifies its address.  See get_out_value_type.  */
  81     COMPILE_I_PRINT_ADDRESS_SCOPE,
  82     COMPILE_I_PRINT_VALUE_SCOPE,
  83   };
  84
  85 /* Just in case they're not defined in stdio.h.  */
  86
  87 #ifndef SEEK_SET
  88 #define SEEK_SET 0
  89 #endif
  90 #ifndef SEEK_CUR
  91 #define SEEK_CUR 1
  92 #endif
  93
  94 /* The O_BINARY flag is defined in fcntl.h on some non-Posix platforms.
  95    It is used as an access modifier in calls to open(), where it acts
  96    similarly to the "b" character in fopen()'s MODE argument.  On Posix
  97    platforms it should be a no-op, so it is defined as 0 here.  This
  98    ensures that the symbol may be used freely elsewhere in gdb.  */
  99
 100 #ifndef O_BINARY
 101 #define O_BINARY 0
 102 #endif
 103
 104 #include "hashtab.h"
 105
 106 /* * Enable dbx commands if set.  */
 107 extern int dbx_commands;
 108
 109 /* * System root path, used to find libraries etc.  */
 110 extern char *gdb_sysroot;
 111
 112 /* * GDB datadir, used to store data files.  */
 113 extern char *gdb_datadir;
 114
 115 /* * If non-NULL, the possibly relocated path to python's "lib" directory
 116    specified with --with-python.  */
 117 extern char *python_libdir;
 118
 119 /* * Search path for separate debug files.  */
 120 extern char *debug_file_directory;
 121
 122 /* GDB's SIGINT handler basically sets a flag; code that might take a
 123    long time before it gets back to the event loop, and which ought to
 124    be interruptible, checks this flag using the QUIT macro, which, if
 125    GDB has the terminal, throws a quit exception.
 126
 127    In addition to setting a flag, the SIGINT handler also marks a
 128    select/poll-able file descriptor as read-ready.  That is used by
 129    interruptible_select in order to support interrupting blocking I/O
 130    in a race-free manner.
 131
 132    These functions use the extension_language_ops API to allow extension
 133    language(s) and GDB SIGINT handling to coexist seamlessly.  */
 134
 135 /* * Evaluate to non-zero if the quit flag is set, zero otherwise.  This
 136    will clear the quit flag as a side effect.  */
 137 extern int check_quit_flag (void);
 138 /* * Set the quit flag.  */
 139 extern void set_quit_flag (void);
 140
 141 /* The current quit handler (and its type).  This is called from the
 142    QUIT macro.  See default_quit_handler below for default behavior.
 143    Parts of GDB temporarily override this to e.g., completely suppress
 144    Ctrl-C because it would not be safe to throw.  E.g., normally, you
 145    wouldn't want to quit between a RSP command and its response, as
 146    that would break the communication with the target, but you may
 147    still want to intercept the Ctrl-C and offer to disconnect if the
 148    user presses Ctrl-C multiple times while the target is stuck
 149    waiting for the wedged remote stub.  */
 150 typedef void (quit_handler_ftype) (void);
 151 extern quit_handler_ftype *quit_handler;
 152
 153 /* Override the current quit handler.  Sets NEW_QUIT_HANDLER as
 154    current quit handler, and installs a cleanup that when run restores
 155    the previous quit handler.  */
 156 struct cleanup *
 157   make_cleanup_override_quit_handler (quit_handler_ftype *new_quit_handler);
 158
 159 /* The default quit handler.  Checks whether Ctrl-C was pressed, and
 160    if so:
 161
 162      - If GDB owns the terminal, throws a quit exception.
 163
 164      - If GDB does not own the terminal, forwards the Ctrl-C to the
 165        target.
 166 */
 167 extern void default_quit_handler (void);
 168
 169 /* Flag that function quit should call quit_force.  */
 170 extern volatile int sync_quit_force_run;
 171
 172 extern void quit (void);
 173
 174 /* Helper for the QUIT macro.  */
 175
 176 extern void maybe_quit (void);
 177
 178 /* Check whether a Ctrl-C was typed, and if so, call the current quit
 179    handler.  */
 180 #define QUIT maybe_quit ()
 181
 182 /* Set the serial event associated with the quit flag.  */
 183 extern void quit_serial_event_set (void);
 184
 185 /* Clear the serial event associated with the quit flag.  */
 186 extern void quit_serial_event_clear (void);
 187
 188 /* * Languages represented in the symbol table and elsewhere.
 189    This should probably be in language.h, but since enum's can't
 190    be forward declared to satisfy opaque references before their
 191    actual definition, needs to be here.
 192
 193    The constants here are in priority order.  In particular,
 194    demangling is attempted according to this order.
 195
 196    Note that there's ambiguity between the mangling schemes of some of
 197    these languages, so some symbols could be successfully demangled by
 198    several languages.  For that reason, the constants here are sorted
 199    in the order we'll attempt demangling them.  For example: Rust uses
 200    C++ mangling, so must come after C++; Ada must come last (see
 201    ada_sniff_from_mangled_name).  */
 202
 203 enum language
 204   {
 205     language_unknown,           /* Language not known */
 206     language_auto,              /* Placeholder for automatic setting */
 207     language_c,                 /* C */
 208     language_objc,              /* Objective-C */
 209     language_cplus,             /* C++ */
 210     language_d,                 /* D */
 211     language_go,                /* Go */
 212     language_fortran,           /* Fortran */
 213     language_m2,                /* Modula-2 */
 214     language_asm,               /* Assembly language */
 215     language_pascal,            /* Pascal */
 216     language_opencl,            /* OpenCL */
 217     language_rust,              /* Rust */
 218     language_minimal,           /* All other languages, minimal support only */
 219     language_ada,               /* Ada */
 220     nr_languages
 221   };
 222
 223 /* The number of bits needed to represent all languages, with enough
 224    padding to allow for reasonable growth.  */
 225 #define LANGUAGE_BITS 5
 226 gdb_static_assert (nr_languages <= (1 << LANGUAGE_BITS));
 227
 228 enum precision_type
 229   {
 230     single_precision,
 231     double_precision,
 232     unspecified_precision
 233   };
 234
 235 /* * A generic, not quite boolean, enumeration.  This is used for
 236    set/show commands in which the options are on/off/automatic.  */
 237 enum auto_boolean
 238 {
 239   AUTO_BOOLEAN_TRUE,
 240   AUTO_BOOLEAN_FALSE,
 241   AUTO_BOOLEAN_AUTO
 242 };
 243
 244 /* * Potential ways that a function can return a value of a given
 245    type.  */
 246
 247 enum return_value_convention
 248 {
 249   /* * Where the return value has been squeezed into one or more
 250      registers.  */
 251   RETURN_VALUE_REGISTER_CONVENTION,
 252   /* * Commonly known as the "struct return convention".  The caller
 253      passes an additional hidden first parameter to the caller.  That
 254      parameter contains the address at which the value being returned
 255      should be stored.  While typically, and historically, used for
 256      large structs, this is convention is applied to values of many
 257      different types.  */
 258   RETURN_VALUE_STRUCT_CONVENTION,
 259   /* * Like the "struct return convention" above, but where the ABI
 260      guarantees that the called function stores the address at which
 261      the value being returned is stored in a well-defined location,
 262      such as a register or memory slot in the stack frame.  Don't use
 263      this if the ABI doesn't explicitly guarantees this.  */
 264   RETURN_VALUE_ABI_RETURNS_ADDRESS,
 265   /* * Like the "struct return convention" above, but where the ABI
 266      guarantees that the address at which the value being returned is
 267      stored will be available in a well-defined location, such as a
 268      register or memory slot in the stack frame.  Don't use this if
 269      the ABI doesn't explicitly guarantees this.  */
 270   RETURN_VALUE_ABI_PRESERVES_ADDRESS,
 271 };
 272
 273 /* Needed for various prototypes */
 274
 275 struct symtab;
 276 struct breakpoint;
 277 struct frame_info;
 278 struct gdbarch;
 279 struct value;
 280
 281 /* From main.c.  */
 282
 283 /* This really belong in utils.c (path-utils.c?), but it references some
 284    globals that are currently only available to main.c.  */
 285 extern char *relocate_gdb_directory (const char *initial, int flag);
 286
 287 \f
 288 /* Annotation stuff.  */
 289
 290 extern int annotation_level;    /* in stack.c */
 291 \f
 292
 293 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 294    "const char *" in unistd.h, so we can't declare the argument
 295    as "char *".  */
 296
 297 EXTERN_C char *re_comp (const char *);
 298
 299 /* From symfile.c */
 300
 301 extern void symbol_file_command (char *, int);
 302
 303 /* * Remote targets may wish to use this as their load function.  */
 304 extern void generic_load (const char *name, int from_tty);
 305
 306 /* * Report on STREAM the performance of memory transfer operation,
 307    such as 'load'.
 308    @param DATA_COUNT is the number of bytes transferred.
 309    @param WRITE_COUNT is the number of separate write operations, or 0,
 310    if that information is not available.
 311    @param START_TIME is the time at which an operation was started.
 312    @param END_TIME is the time at which an operation ended.  */
 313 struct timeval;
 314 extern void print_transfer_performance (struct ui_file *stream,
 315                                         unsigned long data_count,
 316                                         unsigned long write_count,
 317                                         const struct timeval *start_time,
 318                                         const struct timeval *end_time);
 319
 320 /* From top.c */
 321
 322 typedef void initialize_file_ftype (void);
 323
 324 extern char *gdb_readline_wrapper (const char *);
 325
 326 extern char *command_line_input (const char *, int, char *);
 327
 328 extern void print_prompt (void);
 329
 330 struct ui;
 331
 332 extern int input_interactive_p (struct ui *);
 333
 334 extern int info_verbose;
 335
 336 /* From printcmd.c */
 337
 338 extern void set_next_address (struct gdbarch *, CORE_ADDR);
 339
 340 extern int print_address_symbolic (struct gdbarch *, CORE_ADDR,
 341                                    struct ui_file *, int, char *);
 342
 343 extern int build_address_symbolic (struct gdbarch *,
 344                                    CORE_ADDR addr,
 345                                    int do_demangle,
 346                                    char **name,
 347                                    int *offset,
 348                                    char **filename,
 349                                    int *line,
 350                                    int *unmapped);
 351
 352 extern void print_address (struct gdbarch *, CORE_ADDR, struct ui_file *);
 353 extern const char *pc_prefix (CORE_ADDR);
 354
 355 /* From source.c */
 356
 357 /* See openp function definition for their description.  */
 358 #define OPF_TRY_CWD_FIRST     0x01
 359 #define OPF_SEARCH_IN_PATH    0x02
 360 #define OPF_RETURN_REALPATH   0x04
 361
 362 extern int openp (const char *, int, const char *, int, char **);
 363
 364 extern int source_full_path_of (const char *, char **);
 365
 366 extern void mod_path (char *, char **);
 367
 368 extern void add_path (char *, char **, int);
 369
 370 extern void directory_switch (char *, int);
 371
 372 extern char *source_path;
 373
 374 extern void init_source_path (void);
 375
 376 /* From exec.c */
 377
 378 /* * Process memory area starting at ADDR with length SIZE.  Area is
 379    readable iff READ is non-zero, writable if WRITE is non-zero,
 380    executable if EXEC is non-zero.  Area is possibly changed against
 381    its original file based copy if MODIFIED is non-zero.  DATA is
 382    passed without changes from a caller.  */
 383
 384 typedef int (*find_memory_region_ftype) (CORE_ADDR addr, unsigned long size,
 385                                          int read, int write, int exec,
 386                                          int modified, void *data);
 387
 388 /* * Possible lvalue types.  Like enum language, this should be in
 389    value.h, but needs to be here for the same reason.  */
 390
 391 enum lval_type
 392   {
 393     /* * Not an lval.  */
 394     not_lval,
 395     /* * In memory.  */
 396     lval_memory,
 397     /* * In a register.  Registers are relative to a frame.  */
 398     lval_register,
 399     /* * In a gdb internal variable.  */
 400     lval_internalvar,
 401     /* * Value encapsulates a callable defined in an extension language.  */
 402     lval_xcallable,
 403     /* * Part of a gdb internal variable (structure field).  */
 404     lval_internalvar_component,
 405     /* * Value's bits are fetched and stored using functions provided
 406        by its creator.  */
 407     lval_computed
 408   };
 409
 410 /* * Control types for commands.  */
 411
 412 enum misc_command_type
 413   {
 414     ok_command,
 415     end_command,
 416     else_command,
 417     nop_command
 418   };
 419
 420 enum command_control_type
 421   {
 422     simple_control,
 423     break_control,
 424     continue_control,
 425     while_control,
 426     if_control,
 427     commands_control,
 428     python_control,
 429     compile_control,
 430     guile_control,
 431     while_stepping_control,
 432     invalid_control
 433   };
 434
 435 /* * Structure for saved commands lines (for breakpoints, defined
 436    commands, etc).  */
 437
 438 struct command_line
 439   {
 440     struct command_line *next;
 441     char *line;
 442     enum command_control_type control_type;
 443     union
 444       {
 445         struct
 446           {
 447             enum compile_i_scope_types scope;
 448             void *scope_data;
 449           }
 450         compile;
 451       }
 452     control_u;
 453     /* * The number of elements in body_list.  */
 454     int body_count;
 455     /* * For composite commands, the nested lists of commands.  For
 456        example, for "if" command this will contain the then branch and
 457        the else branch, if that is available.  */
 458     struct command_line **body_list;
 459   };
 460
 461 extern struct command_line *read_command_lines (char *, int, int,
 462                                                 void (*)(char *, void *),
 463                                                 void *);
 464 extern struct command_line *read_command_lines_1 (char * (*) (void), int,
 465                                                   void (*)(char *, void *),
 466                                                   void *);
 467
 468 extern void free_command_lines (struct command_line **);
 469
 470 /* * Parameters of the "info proc" command.  */
 471
 472 enum info_proc_what
 473   {
 474     /* * Display the default cmdline, cwd and exe outputs.  */
 475     IP_MINIMAL,
 476
 477     /* * Display `info proc mappings'.  */
 478     IP_MAPPINGS,
 479
 480     /* * Display `info proc status'.  */
 481     IP_STATUS,
 482
 483     /* * Display `info proc stat'.  */
 484     IP_STAT,
 485
 486     /* * Display `info proc cmdline'.  */
 487     IP_CMDLINE,
 488
 489     /* * Display `info proc exe'.  */
 490     IP_EXE,
 491
 492     /* * Display `info proc cwd'.  */
 493     IP_CWD,
 494
 495     /* * Display all of the above.  */
 496     IP_ALL
 497   };
 498
 499 /* * String containing the current directory (what getwd would return).  */
 500
 501 extern char *current_directory;
 502
 503 /* * Default radixes for input and output.  Only some values supported.  */
 504 extern unsigned input_radix;
 505 extern unsigned output_radix;
 506
 507 /* * Possibilities for prettyformat parameters to routines which print
 508    things.  Like enum language, this should be in value.h, but needs
 509    to be here for the same reason.  FIXME:  If we can eliminate this
 510    as an arg to LA_VAL_PRINT, then we can probably move it back to
 511    value.h.  */
 512
 513 enum val_prettyformat
 514   {
 515     Val_no_prettyformat = 0,
 516     Val_prettyformat,
 517     /* * Use the default setting which the user has specified.  */
 518     Val_prettyformat_default
 519   };
 520
 521 /* * Optional native machine support.  Non-native (and possibly pure
 522    multi-arch) targets do not need a "nm.h" file.  This will be a
 523    symlink to one of the nm-*.h files, built by the `configure'
 524    script.  */
 525
 526 #ifdef GDB_NM_FILE
 527 #include "nm.h"
 528 #endif
 529
 530 /* Assume that fopen accepts the letter "b" in the mode string.
 531    It is demanded by ISO C9X, and should be supported on all
 532    platforms that claim to have a standard-conforming C library.  On
 533    true POSIX systems it will be ignored and have no effect.  There
 534    may still be systems without a standard-conforming C library where
 535    an ISO C9X compiler (GCC) is available.  Known examples are SunOS
 536    4.x and 4.3BSD.  This assumption means these systems are no longer
 537    supported.  */
 538 #ifndef FOPEN_RB
 539 # include "fopen-bin.h"
 540 #endif
 541
 542 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 543    FIXME: Assumes 2's complement arithmetic.  */
 544
 545 #if !defined (UINT_MAX)
 546 #define UINT_MAX ((unsigned int)(~0))       /* 0xFFFFFFFF for 32-bits */
 547 #endif
 548
 549 #if !defined (INT_MAX)
 550 #define INT_MAX ((int)(UINT_MAX >> 1))      /* 0x7FFFFFFF for 32-bits */
 551 #endif
 552
 553 #if !defined (INT_MIN)
 554 #define INT_MIN ((int)((int) ~0 ^ INT_MAX)) /* 0x80000000 for 32-bits */
 555 #endif
 556
 557 #if !defined (ULONG_MAX)
 558 #define ULONG_MAX ((unsigned long)(~0L))    /* 0xFFFFFFFF for 32-bits */
 559 #endif
 560
 561 #if !defined (LONG_MAX)
 562 #define LONG_MAX ((long)(ULONG_MAX >> 1))   /* 0x7FFFFFFF for 32-bits */
 563 #endif
 564
 565 #if !defined (ULONGEST_MAX)
 566 #define ULONGEST_MAX (~(ULONGEST)0)        /* 0xFFFFFFFFFFFFFFFF for 64-bits */
 567 #endif
 568
 569 #if !defined (LONGEST_MAX)                 /* 0x7FFFFFFFFFFFFFFF for 64-bits */
 570 #define LONGEST_MAX ((LONGEST)(ULONGEST_MAX >> 1))
 571 #endif
 572
 573 /* * Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 574    arguments to a function, number in a value history, register number, etc.)
 575    where the value must not be larger than can fit in an int.  */
 576
 577 extern int longest_to_int (LONGEST);
 578
 579 /* * List of known OS ABIs.  If you change this, make sure to update the
 580    table in osabi.c.  */
 581 enum gdb_osabi
 582 {
 583   GDB_OSABI_UNINITIALIZED = -1, /* For struct gdbarch_info.  */
 584
 585   GDB_OSABI_UNKNOWN = 0,        /* keep this zero */
 586
 587   GDB_OSABI_SVR4,
 588   GDB_OSABI_HURD,
 589   GDB_OSABI_SOLARIS,
 590   GDB_OSABI_LINUX,
 591   GDB_OSABI_FREEBSD_AOUT,
 592   GDB_OSABI_FREEBSD_ELF,
 593   GDB_OSABI_NETBSD_AOUT,
 594   GDB_OSABI_NETBSD_ELF,
 595   GDB_OSABI_OPENBSD_ELF,
 596   GDB_OSABI_WINCE,
 597   GDB_OSABI_GO32,
 598   GDB_OSABI_IRIX,
 599   GDB_OSABI_HPUX_ELF,
 600   GDB_OSABI_HPUX_SOM,
 601   GDB_OSABI_QNXNTO,
 602   GDB_OSABI_CYGWIN,
 603   GDB_OSABI_AIX,
 604   GDB_OSABI_DICOS,
 605   GDB_OSABI_DARWIN,
 606   GDB_OSABI_SYMBIAN,
 607   GDB_OSABI_OPENVMS,
 608   GDB_OSABI_LYNXOS178,
 609   GDB_OSABI_NEWLIB,
 610   GDB_OSABI_SDE,
 611
 612   GDB_OSABI_INVALID             /* keep this last */
 613 };
 614
 615 /* Enumerate the requirements a symbol has in order to be evaluated.
 616    These are listed in order of "strength" -- a later entry subsumes
 617    earlier ones.  This fine-grained distinction is important because
 618    it allows for the evaluation of a TLS symbol during unwinding --
 619    when unwinding one has access to registers, but not the frame
 620    itself, because that is being constructed.  */
 621
 622 enum symbol_needs_kind
 623 {
 624   /* No special requirements -- just memory.  */
 625   SYMBOL_NEEDS_NONE,
 626
 627   /* The symbol needs registers.  */
 628   SYMBOL_NEEDS_REGISTERS,
 629
 630   /* The symbol needs a frame.  */
 631   SYMBOL_NEEDS_FRAME
 632 };
 633
 634 /* Dynamic target-system-dependent parameters for GDB.  */
 635 #include "gdbarch.h"
 636
 637 /* * Maximum size of a register.  Something small, but large enough for
 638    all known ISAs.  If it turns out to be too small, make it bigger.  */
 639
 640 enum { MAX_REGISTER_SIZE = 64 };
 641
 642 /* In findvar.c.  */
 643
 644 extern LONGEST extract_signed_integer (const gdb_byte *, int,
 645                                        enum bfd_endian);
 646
 647 extern ULONGEST extract_unsigned_integer (const gdb_byte *, int,
 648                                           enum bfd_endian);
 649
 650 extern int extract_long_unsigned_integer (const gdb_byte *, int,
 651                                           enum bfd_endian, LONGEST *);
 652
 653 extern CORE_ADDR extract_typed_address (const gdb_byte *buf,
 654                                         struct type *type);
 655
 656 extern void store_signed_integer (gdb_byte *, int,
 657                                   enum bfd_endian, LONGEST);
 658
 659 extern void store_unsigned_integer (gdb_byte *, int,
 660                                     enum bfd_endian, ULONGEST);
 661
 662 extern void store_typed_address (gdb_byte *buf, struct type *type,
 663                                  CORE_ADDR addr);
 664
 665 \f
 666 /* From valops.c */
 667
 668 extern int watchdog;
 669
 670 /* Hooks for alternate command interfaces.  */
 671
 672 /* * The name of the interpreter if specified on the command line.  */
 673 extern char *interpreter_p;
 674
 675 struct target_waitstatus;
 676 struct cmd_list_element;
 677
 678 extern void (*deprecated_pre_add_symbol_hook) (const char *);
 679 extern void (*deprecated_post_add_symbol_hook) (void);
 680 extern void (*selected_frame_level_changed_hook) (int);
 681 extern int (*deprecated_ui_loop_hook) (int signo);
 682 extern void (*deprecated_show_load_progress) (const char *section,
 683                                               unsigned long section_sent,
 684                                               unsigned long section_size,
 685                                               unsigned long total_sent,
 686                                               unsigned long total_size);
 687 extern void (*deprecated_print_frame_info_listing_hook) (struct symtab * s,
 688                                                          int line,
 689                                                          int stopline,
 690                                                          int noerror);
 691 extern int (*deprecated_query_hook) (const char *, va_list)
 692      ATTRIBUTE_FPTR_PRINTF(1,0);
 693 extern void (*deprecated_warning_hook) (const char *, va_list)
 694      ATTRIBUTE_FPTR_PRINTF(1,0);
 695 extern void (*deprecated_interactive_hook) (void);
 696 extern void (*deprecated_readline_begin_hook) (char *, ...)
 697      ATTRIBUTE_FPTR_PRINTF_1;
 698 extern char *(*deprecated_readline_hook) (const char *);
 699 extern void (*deprecated_readline_end_hook) (void);
 700 extern void (*deprecated_context_hook) (int);
 701 extern ptid_t (*deprecated_target_wait_hook) (ptid_t ptid,
 702                                               struct target_waitstatus *status,
 703                                               int options);
 704
 705 extern void (*deprecated_attach_hook) (void);
 706 extern void (*deprecated_detach_hook) (void);
 707 extern void (*deprecated_call_command_hook) (struct cmd_list_element * c,
 708                                              char *cmd, int from_tty);
 709
 710 extern int (*deprecated_ui_load_progress_hook) (const char *section,
 711                                                 unsigned long num);
 712
 713 /* If this definition isn't overridden by the header files, assume
 714    that isatty and fileno exist on this system.  */
 715 #ifndef ISATTY
 716 #define ISATTY(FP)      (isatty (fileno (FP)))
 717 #endif
 718
 719 /* * A width that can achieve a better legibility for GDB MI mode.  */
 720 #define GDB_MI_MSG_WIDTH  80
 721
 722 /* From progspace.c */
 723
 724 extern void initialize_progspace (void);
 725 extern void initialize_inferiors (void);
 726
 727 /* * Special block numbers */
 728
 729 enum block_enum
 730 {
 731   GLOBAL_BLOCK = 0,
 732   STATIC_BLOCK = 1,
 733   FIRST_LOCAL_BLOCK = 2
 734 };
 735
 736 /* User selection used in observer.h and multiple print functions.  */
 737
 738 enum user_selected_what_flag
 739   {
 740     /* Inferior selected.  */
 741     USER_SELECTED_INFERIOR = 1 << 1,
 742
 743     /* Thread selected.  */
 744     USER_SELECTED_THREAD = 1 << 2,
 745
 746     /* Frame selected.  */
 747     USER_SELECTED_FRAME = 1 << 3
 748   };
 749 DEF_ENUM_FLAGS_TYPE (enum user_selected_what_flag, user_selected_what);
 750
 751 #include "utils.h"
 752
 753 #endif /* #ifndef DEFS_H */