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 has two methods for handling SIGINT.  When immediate_quit is
 129    nonzero, a SIGINT results in an immediate longjmp out of the signal
 130    handler.  Otherwise, SIGINT simply sets a flag; code that might
 131    take a long time, and which ought to be interruptible, checks this
 132    flag using the QUIT macro.
 133
 134    These functions use the extension_language_ops API to allow extension
 135    language(s) and GDB SIGINT handling to coexist seamlessly.  */
 136
 137 /* * Clear the quit flag.  */
 138 extern void clear_quit_flag (void);
 139 /* * Evaluate to non-zero if the quit flag is set, zero otherwise.  This
 140    will clear the quit flag as a side effect.  */
 141 extern int check_quit_flag (void);
 142 /* * Set the quit flag.  */
 143 extern void set_quit_flag (void);
 144
 145 /* Flag that function quit should call quit_force.  */
 146 extern volatile int sync_quit_force_run;
 147
 148 extern int immediate_quit;
 149
 150 extern void quit (void);
 151
 152 /* Helper for the QUIT macro.  */
 153
 154 extern void maybe_quit (void);
 155
 156 /* Check whether a Ctrl-C was typed, and if so, call quit.  The target
 157    is given a chance to process the Ctrl-C.  E.g., it may detect that
 158    repeated Ctrl-C requests were issued, and choose to close the
 159    connection.  */
 160 #define QUIT maybe_quit ()
 161
 162 /* * Languages represented in the symbol table and elsewhere.
 163    This should probably be in language.h, but since enum's can't
 164    be forward declared to satisfy opaque references before their
 165    actual definition, needs to be here.  */
 166
 167 enum language
 168   {
 169     language_unknown,           /* Language not known */
 170     language_auto,              /* Placeholder for automatic setting */
 171     language_c,                 /* C */
 172     language_cplus,             /* C++ */
 173     language_d,                 /* D */
 174     language_go,                /* Go */
 175     language_objc,              /* Objective-C */
 176     language_java,              /* Java */
 177     language_fortran,           /* Fortran */
 178     language_m2,                /* Modula-2 */
 179     language_asm,               /* Assembly language */
 180     language_pascal,            /* Pascal */
 181     language_ada,               /* Ada */
 182     language_opencl,            /* OpenCL */
 183     language_minimal,           /* All other languages, minimal support only */
 184     nr_languages
 185   };
 186
 187 /* The number of bits needed to represent all languages, with enough
 188    padding to allow for reasonable growth.  */
 189 #define LANGUAGE_BITS 5
 190 gdb_static_assert (nr_languages <= (1 << LANGUAGE_BITS));
 191
 192 enum precision_type
 193   {
 194     single_precision,
 195     double_precision,
 196     unspecified_precision
 197   };
 198
 199 /* * A generic, not quite boolean, enumeration.  This is used for
 200    set/show commands in which the options are on/off/automatic.  */
 201 enum auto_boolean
 202 {
 203   AUTO_BOOLEAN_TRUE,
 204   AUTO_BOOLEAN_FALSE,
 205   AUTO_BOOLEAN_AUTO
 206 };
 207
 208 /* * Potential ways that a function can return a value of a given
 209    type.  */
 210
 211 enum return_value_convention
 212 {
 213   /* * Where the return value has been squeezed into one or more
 214      registers.  */
 215   RETURN_VALUE_REGISTER_CONVENTION,
 216   /* * Commonly known as the "struct return convention".  The caller
 217      passes an additional hidden first parameter to the caller.  That
 218      parameter contains the address at which the value being returned
 219      should be stored.  While typically, and historically, used for
 220      large structs, this is convention is applied to values of many
 221      different types.  */
 222   RETURN_VALUE_STRUCT_CONVENTION,
 223   /* * Like the "struct return convention" above, but where the ABI
 224      guarantees that the called function stores the address at which
 225      the value being returned is stored in a well-defined location,
 226      such as a register or memory slot in the stack frame.  Don't use
 227      this if the ABI doesn't explicitly guarantees this.  */
 228   RETURN_VALUE_ABI_RETURNS_ADDRESS,
 229   /* * Like the "struct return convention" above, but where the ABI
 230      guarantees that the address at which the value being returned is
 231      stored will be available in a well-defined location, such as a
 232      register or memory slot in the stack frame.  Don't use this if
 233      the ABI doesn't explicitly guarantees this.  */
 234   RETURN_VALUE_ABI_PRESERVES_ADDRESS,
 235 };
 236
 237 /* Needed for various prototypes */
 238
 239 struct symtab;
 240 struct breakpoint;
 241 struct frame_info;
 242 struct gdbarch;
 243 struct value;
 244
 245 /* From main.c.  */
 246
 247 /* This really belong in utils.c (path-utils.c?), but it references some
 248    globals that are currently only available to main.c.  */
 249 extern char *relocate_gdb_directory (const char *initial, int flag);
 250
 251 \f
 252 /* Annotation stuff.  */
 253
 254 extern int annotation_level;    /* in stack.c */
 255 \f
 256
 257 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 258    "const char *" in unistd.h, so we can't declare the argument
 259    as "char *".  */
 260
 261 EXTERN_C char *re_comp (const char *);
 262
 263 /* From symfile.c */
 264
 265 extern void symbol_file_command (char *, int);
 266
 267 /* * Remote targets may wish to use this as their load function.  */
 268 extern void generic_load (const char *name, int from_tty);
 269
 270 /* * Report on STREAM the performance of memory transfer operation,
 271    such as 'load'.
 272    @param DATA_COUNT is the number of bytes transferred.
 273    @param WRITE_COUNT is the number of separate write operations, or 0,
 274    if that information is not available.
 275    @param START_TIME is the time at which an operation was started.
 276    @param END_TIME is the time at which an operation ended.  */
 277 struct timeval;
 278 extern void print_transfer_performance (struct ui_file *stream,
 279                                         unsigned long data_count,
 280                                         unsigned long write_count,
 281                                         const struct timeval *start_time,
 282                                         const struct timeval *end_time);
 283
 284 /* From top.c */
 285
 286 typedef void initialize_file_ftype (void);
 287
 288 extern char *gdb_readline (const char *);
 289
 290 extern char *gdb_readline_wrapper (const char *);
 291
 292 extern char *command_line_input (const char *, int, char *);
 293
 294 extern void print_prompt (void);
 295
 296 extern int input_from_terminal_p (void);
 297
 298 extern int info_verbose;
 299
 300 /* From printcmd.c */
 301
 302 extern void set_next_address (struct gdbarch *, CORE_ADDR);
 303
 304 extern int print_address_symbolic (struct gdbarch *, CORE_ADDR,
 305                                    struct ui_file *, int, char *);
 306
 307 extern int build_address_symbolic (struct gdbarch *,
 308                                    CORE_ADDR addr,
 309                                    int do_demangle,
 310                                    char **name,
 311                                    int *offset,
 312                                    char **filename,
 313                                    int *line,
 314                                    int *unmapped);
 315
 316 extern void print_address (struct gdbarch *, CORE_ADDR, struct ui_file *);
 317 extern const char *pc_prefix (CORE_ADDR);
 318
 319 /* From source.c */
 320
 321 /* See openp function definition for their description.  */
 322 #define OPF_TRY_CWD_FIRST     0x01
 323 #define OPF_SEARCH_IN_PATH    0x02
 324 #define OPF_RETURN_REALPATH   0x04
 325
 326 extern int openp (const char *, int, const char *, int, char **);
 327
 328 extern int source_full_path_of (const char *, char **);
 329
 330 extern void mod_path (char *, char **);
 331
 332 extern void add_path (char *, char **, int);
 333
 334 extern void directory_switch (char *, int);
 335
 336 extern char *source_path;
 337
 338 extern void init_source_path (void);
 339
 340 /* From exec.c */
 341
 342 /* * Process memory area starting at ADDR with length SIZE.  Area is
 343    readable iff READ is non-zero, writable if WRITE is non-zero,
 344    executable if EXEC is non-zero.  Area is possibly changed against
 345    its original file based copy if MODIFIED is non-zero.  DATA is
 346    passed without changes from a caller.  */
 347
 348 typedef int (*find_memory_region_ftype) (CORE_ADDR addr, unsigned long size,
 349                                          int read, int write, int exec,
 350                                          int modified, void *data);
 351
 352 /* * Possible lvalue types.  Like enum language, this should be in
 353    value.h, but needs to be here for the same reason.  */
 354
 355 enum lval_type
 356   {
 357     /* * Not an lval.  */
 358     not_lval,
 359     /* * In memory.  */
 360     lval_memory,
 361     /* * In a register.  Registers are relative to a frame.  */
 362     lval_register,
 363     /* * In a gdb internal variable.  */
 364     lval_internalvar,
 365     /* * Value encapsulates a callable defined in an extension language.  */
 366     lval_xcallable,
 367     /* * Part of a gdb internal variable (structure field).  */
 368     lval_internalvar_component,
 369     /* * Value's bits are fetched and stored using functions provided
 370        by its creator.  */
 371     lval_computed
 372   };
 373
 374 /* * Control types for commands.  */
 375
 376 enum misc_command_type
 377   {
 378     ok_command,
 379     end_command,
 380     else_command,
 381     nop_command
 382   };
 383
 384 enum command_control_type
 385   {
 386     simple_control,
 387     break_control,
 388     continue_control,
 389     while_control,
 390     if_control,
 391     commands_control,
 392     python_control,
 393     compile_control,
 394     guile_control,
 395     while_stepping_control,
 396     invalid_control
 397   };
 398
 399 /* * Structure for saved commands lines (for breakpoints, defined
 400    commands, etc).  */
 401
 402 struct command_line
 403   {
 404     struct command_line *next;
 405     char *line;
 406     enum command_control_type control_type;
 407     union
 408       {
 409         struct
 410           {
 411             enum compile_i_scope_types scope;
 412             void *scope_data;
 413           }
 414         compile;
 415       }
 416     control_u;
 417     /* * The number of elements in body_list.  */
 418     int body_count;
 419     /* * For composite commands, the nested lists of commands.  For
 420        example, for "if" command this will contain the then branch and
 421        the else branch, if that is available.  */
 422     struct command_line **body_list;
 423   };
 424
 425 extern struct command_line *read_command_lines (char *, int, int,
 426                                                 void (*)(char *, void *),
 427                                                 void *);
 428 extern struct command_line *read_command_lines_1 (char * (*) (void), int,
 429                                                   void (*)(char *, void *),
 430                                                   void *);
 431
 432 extern void free_command_lines (struct command_line **);
 433
 434 /* * Parameters of the "info proc" command.  */
 435
 436 enum info_proc_what
 437   {
 438     /* * Display the default cmdline, cwd and exe outputs.  */
 439     IP_MINIMAL,
 440
 441     /* * Display `info proc mappings'.  */
 442     IP_MAPPINGS,
 443
 444     /* * Display `info proc status'.  */
 445     IP_STATUS,
 446
 447     /* * Display `info proc stat'.  */
 448     IP_STAT,
 449
 450     /* * Display `info proc cmdline'.  */
 451     IP_CMDLINE,
 452
 453     /* * Display `info proc exe'.  */
 454     IP_EXE,
 455
 456     /* * Display `info proc cwd'.  */
 457     IP_CWD,
 458
 459     /* * Display all of the above.  */
 460     IP_ALL
 461   };
 462
 463 /* * String containing the current directory (what getwd would return).  */
 464
 465 extern char *current_directory;
 466
 467 /* * Default radixes for input and output.  Only some values supported.  */
 468 extern unsigned input_radix;
 469 extern unsigned output_radix;
 470
 471 /* * Possibilities for prettyformat parameters to routines which print
 472    things.  Like enum language, this should be in value.h, but needs
 473    to be here for the same reason.  FIXME:  If we can eliminate this
 474    as an arg to LA_VAL_PRINT, then we can probably move it back to
 475    value.h.  */
 476
 477 enum val_prettyformat
 478   {
 479     Val_no_prettyformat = 0,
 480     Val_prettyformat,
 481     /* * Use the default setting which the user has specified.  */
 482     Val_prettyformat_default
 483   };
 484
 485 /* * Optional native machine support.  Non-native (and possibly pure
 486    multi-arch) targets do not need a "nm.h" file.  This will be a
 487    symlink to one of the nm-*.h files, built by the `configure'
 488    script.  */
 489
 490 #ifdef GDB_NM_FILE
 491 #include "nm.h"
 492 #endif
 493
 494 /* Assume that fopen accepts the letter "b" in the mode string.
 495    It is demanded by ISO C9X, and should be supported on all
 496    platforms that claim to have a standard-conforming C library.  On
 497    true POSIX systems it will be ignored and have no effect.  There
 498    may still be systems without a standard-conforming C library where
 499    an ISO C9X compiler (GCC) is available.  Known examples are SunOS
 500    4.x and 4.3BSD.  This assumption means these systems are no longer
 501    supported.  */
 502 #ifndef FOPEN_RB
 503 # include "fopen-bin.h"
 504 #endif
 505
 506 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 507    FIXME: Assumes 2's complement arithmetic.  */
 508
 509 #if !defined (UINT_MAX)
 510 #define UINT_MAX ((unsigned int)(~0))       /* 0xFFFFFFFF for 32-bits */
 511 #endif
 512
 513 #if !defined (INT_MAX)
 514 #define INT_MAX ((int)(UINT_MAX >> 1))      /* 0x7FFFFFFF for 32-bits */
 515 #endif
 516
 517 #if !defined (INT_MIN)
 518 #define INT_MIN ((int)((int) ~0 ^ INT_MAX)) /* 0x80000000 for 32-bits */
 519 #endif
 520
 521 #if !defined (ULONG_MAX)
 522 #define ULONG_MAX ((unsigned long)(~0L))    /* 0xFFFFFFFF for 32-bits */
 523 #endif
 524
 525 #if !defined (LONG_MAX)
 526 #define LONG_MAX ((long)(ULONG_MAX >> 1))   /* 0x7FFFFFFF for 32-bits */
 527 #endif
 528
 529 #if !defined (ULONGEST_MAX)
 530 #define ULONGEST_MAX (~(ULONGEST)0)        /* 0xFFFFFFFFFFFFFFFF for 64-bits */
 531 #endif
 532
 533 #if !defined (LONGEST_MAX)                 /* 0x7FFFFFFFFFFFFFFF for 64-bits */
 534 #define LONGEST_MAX ((LONGEST)(ULONGEST_MAX >> 1))
 535 #endif
 536
 537 /* * Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 538    arguments to a function, number in a value history, register number, etc.)
 539    where the value must not be larger than can fit in an int.  */
 540
 541 extern int longest_to_int (LONGEST);
 542
 543 /* * List of known OS ABIs.  If you change this, make sure to update the
 544    table in osabi.c.  */
 545 enum gdb_osabi
 546 {
 547   GDB_OSABI_UNINITIALIZED = -1, /* For struct gdbarch_info.  */
 548
 549   GDB_OSABI_UNKNOWN = 0,        /* keep this zero */
 550
 551   GDB_OSABI_SVR4,
 552   GDB_OSABI_HURD,
 553   GDB_OSABI_SOLARIS,
 554   GDB_OSABI_LINUX,
 555   GDB_OSABI_FREEBSD_AOUT,
 556   GDB_OSABI_FREEBSD_ELF,
 557   GDB_OSABI_NETBSD_AOUT,
 558   GDB_OSABI_NETBSD_ELF,
 559   GDB_OSABI_OPENBSD_ELF,
 560   GDB_OSABI_WINCE,
 561   GDB_OSABI_GO32,
 562   GDB_OSABI_IRIX,
 563   GDB_OSABI_HPUX_ELF,
 564   GDB_OSABI_HPUX_SOM,
 565   GDB_OSABI_QNXNTO,
 566   GDB_OSABI_CYGWIN,
 567   GDB_OSABI_AIX,
 568   GDB_OSABI_DICOS,
 569   GDB_OSABI_DARWIN,
 570   GDB_OSABI_SYMBIAN,
 571   GDB_OSABI_OPENVMS,
 572   GDB_OSABI_LYNXOS178,
 573   GDB_OSABI_NEWLIB,
 574   GDB_OSABI_SDE,
 575
 576   GDB_OSABI_INVALID             /* keep this last */
 577 };
 578
 579 /* Global functions from other, non-gdb GNU thingies.
 580    Libiberty thingies are no longer declared here.  We include libiberty.h
 581    above, instead.  */
 582
 583 /* From other system libraries */
 584
 585 #ifndef atof
 586 extern double atof (const char *);      /* X3.159-1989  4.10.1.1 */
 587 #endif
 588
 589 /* Dynamic target-system-dependent parameters for GDB.  */
 590 #include "gdbarch.h"
 591
 592 /* * Maximum size of a register.  Something small, but large enough for
 593    all known ISAs.  If it turns out to be too small, make it bigger.  */
 594
 595 enum { MAX_REGISTER_SIZE = 64 };
 596
 597 /* In findvar.c.  */
 598
 599 extern LONGEST extract_signed_integer (const gdb_byte *, int,
 600                                        enum bfd_endian);
 601
 602 extern ULONGEST extract_unsigned_integer (const gdb_byte *, int,
 603                                           enum bfd_endian);
 604
 605 extern int extract_long_unsigned_integer (const gdb_byte *, int,
 606                                           enum bfd_endian, LONGEST *);
 607
 608 extern CORE_ADDR extract_typed_address (const gdb_byte *buf,
 609                                         struct type *type);
 610
 611 extern void store_signed_integer (gdb_byte *, int,
 612                                   enum bfd_endian, LONGEST);
 613
 614 extern void store_unsigned_integer (gdb_byte *, int,
 615                                     enum bfd_endian, ULONGEST);
 616
 617 extern void store_typed_address (gdb_byte *buf, struct type *type,
 618                                  CORE_ADDR addr);
 619
 620 \f
 621 /* From valops.c */
 622
 623 extern int watchdog;
 624
 625 /* Hooks for alternate command interfaces.  */
 626
 627 /* * The name of the interpreter if specified on the command line.  */
 628 extern char *interpreter_p;
 629
 630 struct target_waitstatus;
 631 struct cmd_list_element;
 632
 633 extern void (*deprecated_pre_add_symbol_hook) (const char *);
 634 extern void (*deprecated_post_add_symbol_hook) (void);
 635 extern void (*selected_frame_level_changed_hook) (int);
 636 extern int (*deprecated_ui_loop_hook) (int signo);
 637 extern void (*deprecated_show_load_progress) (const char *section,
 638                                               unsigned long section_sent,
 639                                               unsigned long section_size,
 640                                               unsigned long total_sent,
 641                                               unsigned long total_size);
 642 extern void (*deprecated_print_frame_info_listing_hook) (struct symtab * s,
 643                                                          int line,
 644                                                          int stopline,
 645                                                          int noerror);
 646 extern int (*deprecated_query_hook) (const char *, va_list)
 647      ATTRIBUTE_FPTR_PRINTF(1,0);
 648 extern void (*deprecated_warning_hook) (const char *, va_list)
 649      ATTRIBUTE_FPTR_PRINTF(1,0);
 650 extern void (*deprecated_interactive_hook) (void);
 651 extern void (*deprecated_readline_begin_hook) (char *, ...)
 652      ATTRIBUTE_FPTR_PRINTF_1;
 653 extern char *(*deprecated_readline_hook) (const char *);
 654 extern void (*deprecated_readline_end_hook) (void);
 655 extern void (*deprecated_context_hook) (int);
 656 extern ptid_t (*deprecated_target_wait_hook) (ptid_t ptid,
 657                                               struct target_waitstatus *status,
 658                                               int options);
 659
 660 extern void (*deprecated_attach_hook) (void);
 661 extern void (*deprecated_detach_hook) (void);
 662 extern void (*deprecated_call_command_hook) (struct cmd_list_element * c,
 663                                              char *cmd, int from_tty);
 664
 665 extern int (*deprecated_ui_load_progress_hook) (const char *section,
 666                                                 unsigned long num);
 667
 668 /* If this definition isn't overridden by the header files, assume
 669    that isatty and fileno exist on this system.  */
 670 #ifndef ISATTY
 671 #define ISATTY(FP)      (isatty (fileno (FP)))
 672 #endif
 673
 674 /* * A width that can achieve a better legibility for GDB MI mode.  */
 675 #define GDB_MI_MSG_WIDTH  80
 676
 677 /* From progspace.c */
 678
 679 extern void initialize_progspace (void);
 680 extern void initialize_inferiors (void);
 681
 682 /* * Special block numbers */
 683
 684 enum block_enum
 685 {
 686   GLOBAL_BLOCK = 0,
 687   STATIC_BLOCK = 1,
 688   FIRST_LOCAL_BLOCK = 2
 689 };
 690
 691 #include "utils.h"
 692
 693 #endif /* #ifndef DEFS_H */