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 <stdio.h>
  32 #include <errno.h>              /* System call error return status.  */
  33 #include <limits.h>
  34 #include <stdint.h>
  35
  36 /* The libdecnumber library, on which GDB depends, includes a header file
  37    called gstdint.h instead of relying directly on stdint.h.  GDB, on the
  38    other hand, includes stdint.h directly, relying on the fact that gnulib
  39    generates a copy if the system doesn't provide one or if it is missing
  40    some features.  Unfortunately, gstdint.h and stdint.h cannot be included
  41    at the same time, which may happen when we include a file from
  42    libdecnumber.
  43
  44    The following macro definition effectively prevents the inclusion of
  45    gstdint.h, as all the definitions it provides are guarded against
  46    the GCC_GENERATED_STDINT_H macro.  We already have gnulib/stdint.h
  47    included, so it's ok to blank out gstdint.h.  */
  48 #define GCC_GENERATED_STDINT_H 1
  49
  50 #include <stddef.h>
  51
  52 #include <unistd.h>
  53
  54 /* For gnulib's PATH_MAX.  */
  55 #include "pathmax.h"
  56
  57 #include <fcntl.h>
  58
  59 /* First include ansidecl.h so we can use the various macro definitions
  60    here and in all subsequent file inclusions.  */
  61
  62 #include "ansidecl.h"
  63
  64 #include "gdb_locale.h"
  65
  66 #include "gdb_wchar.h"
  67
  68 /* For ``enum gdb_signal''.  */
  69 #include "gdb/signals.h"
  70
  71 #include "ui-file.h"
  72
  73 #include "host-defs.h"
  74
  75 /* Just in case they're not defined in stdio.h.  */
  76
  77 #ifndef SEEK_SET
  78 #define SEEK_SET 0
  79 #endif
  80 #ifndef SEEK_CUR
  81 #define SEEK_CUR 1
  82 #endif
  83
  84 /* The O_BINARY flag is defined in fcntl.h on some non-Posix platforms.
  85    It is used as an access modifier in calls to open(), where it acts
  86    similarly to the "b" character in fopen()'s MODE argument.  On Posix
  87    platforms it should be a no-op, so it is defined as 0 here.  This
  88    ensures that the symbol may be used freely elsewhere in gdb.  */
  89
  90 #ifndef O_BINARY
  91 #define O_BINARY 0
  92 #endif
  93
  94 #include <stdarg.h>             /* For va_list.  */
  95
  96 #include "libiberty.h"
  97 #include "hashtab.h"
  98
  99 /* Rather than duplicate all the logic in BFD for figuring out what
 100    types to use (which can be pretty complicated), symply define them
 101    in terms of the corresponding type from BFD.  */
 102
 103 #include "bfd.h"
 104
 105 /* * A byte from the program being debugged.  */
 106 typedef bfd_byte gdb_byte;
 107
 108 /* * An address in the program being debugged.  Host byte order.  */
 109 typedef bfd_vma CORE_ADDR;
 110
 111 /* * The largest CORE_ADDR value.  */
 112 #define CORE_ADDR_MAX (~ (CORE_ADDR) 0)
 113
 114 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
 115
 116 #ifdef BFD64
 117
 118 #define LONGEST BFD_HOST_64_BIT
 119 #define ULONGEST BFD_HOST_U_64_BIT
 120
 121 #else /* No BFD64 */
 122
 123 #define LONGEST long long
 124 #define ULONGEST unsigned long long
 125
 126 #endif /* No BFD64 */
 127
 128 #ifndef min
 129 #define min(a, b) ((a) < (b) ? (a) : (b))
 130 #endif
 131 #ifndef max
 132 #define max(a, b) ((a) > (b) ? (a) : (b))
 133 #endif
 134
 135 #include "ptid.h"
 136
 137 /* * Enable xdb commands if set.  */
 138 extern int xdb_commands;
 139
 140 /* * Enable dbx commands if set.  */
 141 extern int dbx_commands;
 142
 143 /* * System root path, used to find libraries etc.  */
 144 extern char *gdb_sysroot;
 145
 146 /* * GDB datadir, used to store data files.  */
 147 extern char *gdb_datadir;
 148
 149 /* * If non-NULL, the possibly relocated path to python's "lib" directory
 150    specified with --with-python.  */
 151 extern char *python_libdir;
 152
 153 /* * Search path for separate debug files.  */
 154 extern char *debug_file_directory;
 155
 156 /* GDB has two methods for handling SIGINT.  When immediate_quit is
 157    nonzero, a SIGINT results in an immediate longjmp out of the signal
 158    handler.  Otherwise, SIGINT simply sets a flag; code that might
 159    take a long time, and which ought to be interruptible, checks this
 160    flag using the QUIT macro.
 161
 162    These functions use the extension_language_ops API to allow extension
 163    language(s) and GDB SIGINT handling to coexist seamlessly.  */
 164
 165 /* * Clear the quit flag.  */
 166 extern void clear_quit_flag (void);
 167 /* * Evaluate to non-zero if the quit flag is set, zero otherwise.  This
 168    will clear the quit flag as a side effect.  */
 169 extern int check_quit_flag (void);
 170 /* * Set the quit flag.  */
 171 extern void set_quit_flag (void);
 172
 173 /* Flag that function quit should call quit_force.  */
 174 extern volatile int sync_quit_force_run;
 175
 176 extern int immediate_quit;
 177
 178 extern void quit (void);
 179
 180 /* FIXME: cagney/2000-03-13: It has been suggested that the peformance
 181    benefits of having a ``QUIT'' macro rather than a function are
 182    marginal.  If the overhead of a QUIT function call is proving
 183    significant then its calling frequency should probably be reduced
 184    [kingdon].  A profile analyzing the current situtation is
 185    needed.  */
 186
 187 #define QUIT { \
 188   if (check_quit_flag () || sync_quit_force_run) quit (); \
 189   if (deprecated_interactive_hook) deprecated_interactive_hook (); \
 190 }
 191
 192 /* * Languages represented in the symbol table and elsewhere.
 193    This should probably be in language.h, but since enum's can't
 194    be forward declared to satisfy opaque references before their
 195    actual definition, needs to be here.  */
 196
 197 enum language
 198   {
 199     language_unknown,           /* Language not known */
 200     language_auto,              /* Placeholder for automatic setting */
 201     language_c,                 /* C */
 202     language_cplus,             /* C++ */
 203     language_d,                 /* D */
 204     language_go,                /* Go */
 205     language_objc,              /* Objective-C */
 206     language_java,              /* Java */
 207     language_fortran,           /* Fortran */
 208     language_m2,                /* Modula-2 */
 209     language_asm,               /* Assembly language */
 210     language_pascal,            /* Pascal */
 211     language_ada,               /* Ada */
 212     language_opencl,            /* OpenCL */
 213     language_minimal,           /* All other languages, minimal support only */
 214     nr_languages
 215   };
 216
 217 enum precision_type
 218   {
 219     single_precision,
 220     double_precision,
 221     unspecified_precision
 222   };
 223
 224 /* * A generic, not quite boolean, enumeration.  This is used for
 225    set/show commands in which the options are on/off/automatic.  */
 226 enum auto_boolean
 227 {
 228   AUTO_BOOLEAN_TRUE,
 229   AUTO_BOOLEAN_FALSE,
 230   AUTO_BOOLEAN_AUTO
 231 };
 232
 233 /* * Potential ways that a function can return a value of a given
 234    type.  */
 235
 236 enum return_value_convention
 237 {
 238   /* * Where the return value has been squeezed into one or more
 239      registers.  */
 240   RETURN_VALUE_REGISTER_CONVENTION,
 241   /* * Commonly known as the "struct return convention".  The caller
 242      passes an additional hidden first parameter to the caller.  That
 243      parameter contains the address at which the value being returned
 244      should be stored.  While typically, and historically, used for
 245      large structs, this is convention is applied to values of many
 246      different types.  */
 247   RETURN_VALUE_STRUCT_CONVENTION,
 248   /* * Like the "struct return convention" above, but where the ABI
 249      guarantees that the called function stores the address at which
 250      the value being returned is stored in a well-defined location,
 251      such as a register or memory slot in the stack frame.  Don't use
 252      this if the ABI doesn't explicitly guarantees this.  */
 253   RETURN_VALUE_ABI_RETURNS_ADDRESS,
 254   /* * Like the "struct return convention" above, but where the ABI
 255      guarantees that the address at which the value being returned is
 256      stored will be available in a well-defined location, such as a
 257      register or memory slot in the stack frame.  Don't use this if
 258      the ABI doesn't explicitly guarantees this.  */
 259   RETURN_VALUE_ABI_PRESERVES_ADDRESS,
 260 };
 261
 262 /* Needed for various prototypes */
 263
 264 struct symtab;
 265 struct breakpoint;
 266 struct frame_info;
 267 struct gdbarch;
 268 struct value;
 269
 270 /* From main.c.  */
 271
 272 /* This really belong in utils.c (path-utils.c?), but it references some
 273    globals that are currently only available to main.c.  */
 274 extern char *relocate_gdb_directory (const char *initial, int flag);
 275
 276 \f
 277 /* Annotation stuff.  */
 278
 279 extern int annotation_level;    /* in stack.c */
 280 \f
 281
 282 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 283    "const char *" in unistd.h, so we can't declare the argument
 284    as "char *".  */
 285
 286 extern char *re_comp (const char *);
 287
 288 /* From symfile.c */
 289
 290 extern void symbol_file_command (char *, int);
 291
 292 /* * Remote targets may wish to use this as their load function.  */
 293 extern void generic_load (const char *name, int from_tty);
 294
 295 /* * Report on STREAM the performance of memory transfer operation,
 296    such as 'load'.
 297    @param DATA_COUNT is the number of bytes transferred.
 298    @param WRITE_COUNT is the number of separate write operations, or 0,
 299    if that information is not available.
 300    @param START_TIME is the time at which an operation was started.
 301    @param END_TIME is the time at which an operation ended.  */
 302 struct timeval;
 303 extern void print_transfer_performance (struct ui_file *stream,
 304                                         unsigned long data_count,
 305                                         unsigned long write_count,
 306                                         const struct timeval *start_time,
 307                                         const struct timeval *end_time);
 308
 309 /* From top.c */
 310
 311 typedef void initialize_file_ftype (void);
 312
 313 extern char *gdb_readline (char *);
 314
 315 extern char *gdb_readline_wrapper (char *);
 316
 317 extern char *command_line_input (char *, int, char *);
 318
 319 extern void print_prompt (void);
 320
 321 extern int input_from_terminal_p (void);
 322
 323 extern int info_verbose;
 324
 325 /* From printcmd.c */
 326
 327 extern void set_next_address (struct gdbarch *, CORE_ADDR);
 328
 329 extern int print_address_symbolic (struct gdbarch *, CORE_ADDR,
 330                                    struct ui_file *, int, char *);
 331
 332 extern int build_address_symbolic (struct gdbarch *,
 333                                    CORE_ADDR addr,
 334                                    int do_demangle,
 335                                    char **name,
 336                                    int *offset,
 337                                    char **filename,
 338                                    int *line,
 339                                    int *unmapped);
 340
 341 extern void print_address (struct gdbarch *, CORE_ADDR, struct ui_file *);
 342 extern const char *pc_prefix (CORE_ADDR);
 343
 344 /* From source.c */
 345
 346 /* See openp function definition for their description.  */
 347 #define OPF_TRY_CWD_FIRST     0x01
 348 #define OPF_SEARCH_IN_PATH    0x02
 349 #define OPF_RETURN_REALPATH   0x04
 350
 351 extern int openp (const char *, int, const char *, int, char **);
 352
 353 extern int source_full_path_of (const char *, char **);
 354
 355 extern void mod_path (char *, char **);
 356
 357 extern void add_path (char *, char **, int);
 358
 359 extern void directory_switch (char *, int);
 360
 361 extern char *source_path;
 362
 363 extern void init_source_path (void);
 364
 365 /* From exec.c */
 366
 367 /* * Process memory area starting at ADDR with length SIZE.  Area is
 368    readable iff READ is non-zero, writable if WRITE is non-zero,
 369    executable if EXEC is non-zero.  Area is possibly changed against
 370    its original file based copy if MODIFIED is non-zero.  DATA is
 371    passed without changes from a caller.  */
 372
 373 typedef int (*find_memory_region_ftype) (CORE_ADDR addr, unsigned long size,
 374                                          int read, int write, int exec,
 375                                          int modified, void *data);
 376
 377 /* * Possible lvalue types.  Like enum language, this should be in
 378    value.h, but needs to be here for the same reason.  */
 379
 380 enum lval_type
 381   {
 382     /* * Not an lval.  */
 383     not_lval,
 384     /* * In memory.  */
 385     lval_memory,
 386     /* * In a register.  Registers are relative to a frame.  */
 387     lval_register,
 388     /* * In a gdb internal variable.  */
 389     lval_internalvar,
 390     /* * Value encapsulates a callable defined in an extension language.  */
 391     lval_xcallable,
 392     /* * Part of a gdb internal variable (structure field).  */
 393     lval_internalvar_component,
 394     /* * Value's bits are fetched and stored using functions provided
 395        by its creator.  */
 396     lval_computed
 397   };
 398
 399 /* * Control types for commands.  */
 400
 401 enum misc_command_type
 402   {
 403     ok_command,
 404     end_command,
 405     else_command,
 406     nop_command
 407   };
 408
 409 enum command_control_type
 410   {
 411     simple_control,
 412     break_control,
 413     continue_control,
 414     while_control,
 415     if_control,
 416     commands_control,
 417     python_control,
 418     guile_control,
 419     while_stepping_control,
 420     invalid_control
 421   };
 422
 423 /* * Structure for saved commands lines (for breakpoints, defined
 424    commands, etc).  */
 425
 426 struct command_line
 427   {
 428     struct command_line *next;
 429     char *line;
 430     enum command_control_type control_type;
 431     /* * The number of elements in body_list.  */
 432     int body_count;
 433     /* * For composite commands, the nested lists of commands.  For
 434        example, for "if" command this will contain the then branch and
 435        the else branch, if that is available.  */
 436     struct command_line **body_list;
 437   };
 438
 439 extern struct command_line *read_command_lines (char *, int, int,
 440                                                 void (*)(char *, void *),
 441                                                 void *);
 442 extern struct command_line *read_command_lines_1 (char * (*) (void), int,
 443                                                   void (*)(char *, void *),
 444                                                   void *);
 445
 446 extern void free_command_lines (struct command_line **);
 447
 448 /* * Parameters of the "info proc" command.  */
 449
 450 enum info_proc_what
 451   {
 452     /* * Display the default cmdline, cwd and exe outputs.  */
 453     IP_MINIMAL,
 454
 455     /* * Display `info proc mappings'.  */
 456     IP_MAPPINGS,
 457
 458     /* * Display `info proc status'.  */
 459     IP_STATUS,
 460
 461     /* * Display `info proc stat'.  */
 462     IP_STAT,
 463
 464     /* * Display `info proc cmdline'.  */
 465     IP_CMDLINE,
 466
 467     /* * Display `info proc exe'.  */
 468     IP_EXE,
 469
 470     /* * Display `info proc cwd'.  */
 471     IP_CWD,
 472
 473     /* * Display all of the above.  */
 474     IP_ALL
 475   };
 476
 477 /* * String containing the current directory (what getwd would return).  */
 478
 479 extern char *current_directory;
 480
 481 /* * Default radixes for input and output.  Only some values supported.  */
 482 extern unsigned input_radix;
 483 extern unsigned output_radix;
 484
 485 /* * Possibilities for prettyformat parameters to routines which print
 486    things.  Like enum language, this should be in value.h, but needs
 487    to be here for the same reason.  FIXME:  If we can eliminate this
 488    as an arg to LA_VAL_PRINT, then we can probably move it back to
 489    value.h.  */
 490
 491 enum val_prettyformat
 492   {
 493     Val_no_prettyformat = 0,
 494     Val_prettyformat,
 495     /* * Use the default setting which the user has specified.  */
 496     Val_prettyformat_default
 497   };
 498
 499 /* * Optional native machine support.  Non-native (and possibly pure
 500    multi-arch) targets do not need a "nm.h" file.  This will be a
 501    symlink to one of the nm-*.h files, built by the `configure'
 502    script.  */
 503
 504 #ifdef GDB_NM_FILE
 505 #include "nm.h"
 506 #endif
 507
 508 /* Assume that fopen accepts the letter "b" in the mode string.
 509    It is demanded by ISO C9X, and should be supported on all
 510    platforms that claim to have a standard-conforming C library.  On
 511    true POSIX systems it will be ignored and have no effect.  There
 512    may still be systems without a standard-conforming C library where
 513    an ISO C9X compiler (GCC) is available.  Known examples are SunOS
 514    4.x and 4.3BSD.  This assumption means these systems are no longer
 515    supported.  */
 516 #ifndef FOPEN_RB
 517 # include "fopen-bin.h"
 518 #endif
 519
 520 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 521    FIXME: Assumes 2's complement arithmetic.  */
 522
 523 #if !defined (UINT_MAX)
 524 #define UINT_MAX ((unsigned int)(~0))       /* 0xFFFFFFFF for 32-bits */
 525 #endif
 526
 527 #if !defined (INT_MAX)
 528 #define INT_MAX ((int)(UINT_MAX >> 1))      /* 0x7FFFFFFF for 32-bits */
 529 #endif
 530
 531 #if !defined (INT_MIN)
 532 #define INT_MIN ((int)((int) ~0 ^ INT_MAX)) /* 0x80000000 for 32-bits */
 533 #endif
 534
 535 #if !defined (ULONG_MAX)
 536 #define ULONG_MAX ((unsigned long)(~0L))    /* 0xFFFFFFFF for 32-bits */
 537 #endif
 538
 539 #if !defined (LONG_MAX)
 540 #define LONG_MAX ((long)(ULONG_MAX >> 1))   /* 0x7FFFFFFF for 32-bits */
 541 #endif
 542
 543 #if !defined (ULONGEST_MAX)
 544 #define ULONGEST_MAX (~(ULONGEST)0)        /* 0xFFFFFFFFFFFFFFFF for 64-bits */
 545 #endif
 546
 547 #if !defined (LONGEST_MAX)                 /* 0x7FFFFFFFFFFFFFFF for 64-bits */
 548 #define LONGEST_MAX ((LONGEST)(ULONGEST_MAX >> 1))
 549 #endif
 550
 551 /* * Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 552    arguments to a function, number in a value history, register number, etc.)
 553    where the value must not be larger than can fit in an int.  */
 554
 555 extern int longest_to_int (LONGEST);
 556
 557 #include "common-utils.h"
 558
 559 /* * List of known OS ABIs.  If you change this, make sure to update the
 560    table in osabi.c.  */
 561 enum gdb_osabi
 562 {
 563   GDB_OSABI_UNINITIALIZED = -1, /* For struct gdbarch_info.  */
 564
 565   GDB_OSABI_UNKNOWN = 0,        /* keep this zero */
 566
 567   GDB_OSABI_SVR4,
 568   GDB_OSABI_HURD,
 569   GDB_OSABI_SOLARIS,
 570   GDB_OSABI_OSF1,
 571   GDB_OSABI_LINUX,
 572   GDB_OSABI_FREEBSD_AOUT,
 573   GDB_OSABI_FREEBSD_ELF,
 574   GDB_OSABI_NETBSD_AOUT,
 575   GDB_OSABI_NETBSD_ELF,
 576   GDB_OSABI_OPENBSD_ELF,
 577   GDB_OSABI_WINCE,
 578   GDB_OSABI_GO32,
 579   GDB_OSABI_IRIX,
 580   GDB_OSABI_HPUX_ELF,
 581   GDB_OSABI_HPUX_SOM,
 582   GDB_OSABI_QNXNTO,
 583   GDB_OSABI_CYGWIN,
 584   GDB_OSABI_AIX,
 585   GDB_OSABI_DICOS,
 586   GDB_OSABI_DARWIN,
 587   GDB_OSABI_SYMBIAN,
 588   GDB_OSABI_OPENVMS,
 589   GDB_OSABI_LYNXOS178,
 590   GDB_OSABI_NEWLIB,
 591
 592   GDB_OSABI_INVALID             /* keep this last */
 593 };
 594
 595 /* Global functions from other, non-gdb GNU thingies.
 596    Libiberty thingies are no longer declared here.  We include libiberty.h
 597    above, instead.  */
 598
 599 /* From other system libraries */
 600
 601 #include <stdlib.h>
 602
 603
 604 #ifndef atof
 605 extern double atof (const char *);      /* X3.159-1989  4.10.1.1 */
 606 #endif
 607
 608 /* Various possibilities for alloca.  */
 609 #ifndef alloca
 610 #ifdef __GNUC__
 611 #define alloca __builtin_alloca
 612 #else /* Not GNU C */
 613 #ifdef HAVE_ALLOCA_H
 614 #include <alloca.h>
 615 #else
 616 #ifdef _AIX
 617 #pragma alloca
 618 #else
 619
 620 /* We need to be careful not to declare this in a way which conflicts with
 621    bison.  Bison never declares it as char *, but under various circumstances
 622    (like __hpux) we need to use void *.  */
 623 extern void *alloca ();
 624 #endif /* Not _AIX */
 625 #endif /* Not HAVE_ALLOCA_H */
 626 #endif /* Not GNU C */
 627 #endif /* alloca not defined */
 628
 629 /* Dynamic target-system-dependent parameters for GDB.  */
 630 #include "gdbarch.h"
 631
 632 /* * Maximum size of a register.  Something small, but large enough for
 633    all known ISAs.  If it turns out to be too small, make it bigger.  */
 634
 635 enum { MAX_REGISTER_SIZE = 64 };
 636
 637 /* Static target-system-dependent parameters for GDB.  */
 638
 639 /* * Number of bits in a char or unsigned char for the target machine.
 640    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 641 #if !defined (TARGET_CHAR_BIT)
 642 #define TARGET_CHAR_BIT 8
 643 #endif
 644
 645 /* * If we picked up a copy of CHAR_BIT from a configuration file
 646    (which may get it by including <limits.h>) then use it to set
 647    the number of bits in a host char.  If not, use the same size
 648    as the target.  */
 649
 650 #if defined (CHAR_BIT)
 651 #define HOST_CHAR_BIT CHAR_BIT
 652 #else
 653 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 654 #endif
 655
 656 /* In findvar.c.  */
 657
 658 extern LONGEST extract_signed_integer (const gdb_byte *, int,
 659                                        enum bfd_endian);
 660
 661 extern ULONGEST extract_unsigned_integer (const gdb_byte *, int,
 662                                           enum bfd_endian);
 663
 664 extern int extract_long_unsigned_integer (const gdb_byte *, int,
 665                                           enum bfd_endian, LONGEST *);
 666
 667 extern CORE_ADDR extract_typed_address (const gdb_byte *buf,
 668                                         struct type *type);
 669
 670 extern void store_signed_integer (gdb_byte *, int,
 671                                   enum bfd_endian, LONGEST);
 672
 673 extern void store_unsigned_integer (gdb_byte *, int,
 674                                     enum bfd_endian, ULONGEST);
 675
 676 extern void store_typed_address (gdb_byte *buf, struct type *type,
 677                                  CORE_ADDR addr);
 678
 679 \f
 680 /* From valops.c */
 681
 682 extern int watchdog;
 683
 684 /* Hooks for alternate command interfaces.  */
 685
 686 /* * The name of the interpreter if specified on the command line.  */
 687 extern char *interpreter_p;
 688
 689 /* If a given interpreter matches INTERPRETER_P then it should update
 690    deprecated_init_ui_hook with the per-interpreter implementation.  */
 691 /* FIXME: deprecated_init_ui_hook should be moved here.  */
 692
 693 struct target_waitstatus;
 694 struct cmd_list_element;
 695
 696 extern void (*deprecated_pre_add_symbol_hook) (const char *);
 697 extern void (*deprecated_post_add_symbol_hook) (void);
 698 extern void (*selected_frame_level_changed_hook) (int);
 699 extern int (*deprecated_ui_loop_hook) (int signo);
 700 extern void (*deprecated_init_ui_hook) (char *argv0);
 701 extern void (*deprecated_show_load_progress) (const char *section,
 702                                               unsigned long section_sent,
 703                                               unsigned long section_size,
 704                                               unsigned long total_sent,
 705                                               unsigned long total_size);
 706 extern void (*deprecated_print_frame_info_listing_hook) (struct symtab * s,
 707                                                          int line,
 708                                                          int stopline,
 709                                                          int noerror);
 710 extern int (*deprecated_query_hook) (const char *, va_list)
 711      ATTRIBUTE_FPTR_PRINTF(1,0);
 712 extern void (*deprecated_warning_hook) (const char *, va_list)
 713      ATTRIBUTE_FPTR_PRINTF(1,0);
 714 extern void (*deprecated_interactive_hook) (void);
 715 extern void (*deprecated_readline_begin_hook) (char *, ...)
 716      ATTRIBUTE_FPTR_PRINTF_1;
 717 extern char *(*deprecated_readline_hook) (char *);
 718 extern void (*deprecated_readline_end_hook) (void);
 719 extern void (*deprecated_register_changed_hook) (int regno);
 720 extern void (*deprecated_context_hook) (int);
 721 extern ptid_t (*deprecated_target_wait_hook) (ptid_t ptid,
 722                                               struct target_waitstatus *status,
 723                                               int options);
 724
 725 extern void (*deprecated_attach_hook) (void);
 726 extern void (*deprecated_detach_hook) (void);
 727 extern void (*deprecated_call_command_hook) (struct cmd_list_element * c,
 728                                              char *cmd, int from_tty);
 729
 730 extern int (*deprecated_ui_load_progress_hook) (const char *section,
 731                                                 unsigned long num);
 732
 733 /* If this definition isn't overridden by the header files, assume
 734    that isatty and fileno exist on this system.  */
 735 #ifndef ISATTY
 736 #define ISATTY(FP)      (isatty (fileno (FP)))
 737 #endif
 738
 739 /* * A width that can achieve a better legibility for GDB MI mode.  */
 740 #define GDB_MI_MSG_WIDTH  80
 741
 742 /* From progspace.c */
 743
 744 extern void initialize_progspace (void);
 745 extern void initialize_inferiors (void);
 746
 747 /* * Special block numbers */
 748
 749 enum block_enum
 750 {
 751   GLOBAL_BLOCK = 0,
 752   STATIC_BLOCK = 1,
 753   FIRST_LOCAL_BLOCK = 2
 754 };
 755
 756 #include "utils.h"
 757
 758 #endif /* #ifndef DEFS_H */