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, 1988-2005, 2007-2012 Free Software Foundation,
   5    Inc.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22 #ifndef DEFS_H
  23 #define DEFS_H
  24
  25 #ifdef GDBSERVER
  26 #  error gdbserver should not include gdb/defs.h
  27 #endif
  28
  29 #include "config.h"             /* Generated by configure.  */
  30 #include "build-gnulib/config.h"
  31
  32 #include <sys/types.h>
  33 #include <stdio.h>
  34 #include <errno.h>              /* System call error return status.  */
  35 #include <limits.h>
  36 #include <stdint.h>
  37
  38 /* The libdecnumber library, on which GDB depends, includes a header file
  39    called gstdint.h instead of relying directly on stdint.h.  GDB, on the
  40    other hand, includes stdint.h directly, relying on the fact that gnulib
  41    generates a copy if the system doesn't provide one or if it is missing
  42    some features.  Unfortunately, gstdint.h and stdint.h cannot be included
  43    at the same time, which may happen when we include a file from
  44    libdecnumber.
  45
  46    The following macro definition effectively prevents the inclusion of
  47    gstdint.h, as all the definitions it provides are guarded against
  48    the GCC_GENERATED_STDINT_H macro.  We already have gnulib/stdint.h
  49    included, so it's ok to blank out gstdint.h.  */
  50 #define GCC_GENERATED_STDINT_H 1
  51
  52 #ifdef HAVE_STDDEF_H
  53 #include <stddef.h>
  54 #endif
  55
  56 #ifdef HAVE_UNISTD_H
  57 #include <unistd.h>
  58 #endif
  59
  60 #include <fcntl.h>
  61
  62 /* First include ansidecl.h so we can use the various macro definitions
  63    here and in all subsequent file inclusions.  */
  64
  65 #include "ansidecl.h"
  66
  67 #include "gdb_locale.h"
  68
  69 #include "gdb_wchar.h"
  70
  71 /* For ``enum gdb_signal''.  */
  72 #include "gdb/signals.h"
  73
  74 #include "ui-file.h"
  75
  76 #include "host-defs.h"
  77
  78 /* Just in case they're not defined in stdio.h.  */
  79
  80 #ifndef SEEK_SET
  81 #define SEEK_SET 0
  82 #endif
  83 #ifndef SEEK_CUR
  84 #define SEEK_CUR 1
  85 #endif
  86
  87 /* The O_BINARY flag is defined in fcntl.h on some non-Posix platforms.
  88    It is used as an access modifier in calls to open(), where it acts
  89    similarly to the "b" character in fopen()'s MODE argument.  On Posix
  90    platforms it should be a no-op, so it is defined as 0 here.  This
  91    ensures that the symbol may be used freely elsewhere in gdb.  */
  92
  93 #ifndef O_BINARY
  94 #define O_BINARY 0
  95 #endif
  96
  97 #include <stdarg.h>             /* For va_list.  */
  98
  99 #include "libiberty.h"
 100 #include "hashtab.h"
 101
 102 /* Rather than duplicate all the logic in BFD for figuring out what
 103    types to use (which can be pretty complicated), symply define them
 104    in terms of the corresponding type from BFD.  */
 105
 106 #include "bfd.h"
 107
 108 /* A byte from the program being debugged.  */
 109 typedef bfd_byte gdb_byte;
 110
 111 /* An address in the program being debugged.  Host byte order.  */
 112 typedef bfd_vma CORE_ADDR;
 113
 114 /* The largest CORE_ADDR value.  */
 115 #define CORE_ADDR_MAX (~ (CORE_ADDR) 0)
 116
 117 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
 118
 119 #ifndef LONGEST
 120
 121 #ifdef BFD64
 122
 123 #define LONGEST BFD_HOST_64_BIT
 124 #define ULONGEST BFD_HOST_U_64_BIT
 125
 126 #else /* No BFD64 */
 127
 128 #define LONGEST long long
 129 #define ULONGEST unsigned long long
 130
 131 #endif /* No BFD64 */
 132
 133 #endif /* ! LONGEST */
 134
 135 #ifndef min
 136 #define min(a, b) ((a) < (b) ? (a) : (b))
 137 #endif
 138 #ifndef max
 139 #define max(a, b) ((a) > (b) ? (a) : (b))
 140 #endif
 141
 142 #include "ptid.h"
 143
 144 /* Enable xdb commands if set.  */
 145 extern int xdb_commands;
 146
 147 /* Enable dbx commands if set.  */
 148 extern int dbx_commands;
 149
 150 /* System root path, used to find libraries etc.  */
 151 extern char *gdb_sysroot;
 152
 153 /* GDB datadir, used to store data files.  */
 154 extern char *gdb_datadir;
 155
 156 /* If non-NULL, the possibly relocated path to python's "lib" directory
 157    specified with --with-python.  */
 158 extern char *python_libdir;
 159
 160 /* Search path for separate debug files.  */
 161 extern char *debug_file_directory;
 162
 163 /* GDB has two methods for handling SIGINT.  When immediate_quit is
 164    nonzero, a SIGINT results in an immediate longjmp out of the signal
 165    handler.  Otherwise, SIGINT simply sets a flag; code that might
 166    take a long time, and which ought to be interruptible, checks this
 167    flag using the QUIT macro.
 168
 169    If GDB is built with Python support, it uses Python's low-level
 170    interface to implement the flag.  This approach makes it possible
 171    for Python and GDB SIGINT handling to coexist seamlessly.
 172
 173    If GDB is built without Python, it instead uses its traditional
 174    variables.  */
 175
 176 /* Clear the quit flag.  */
 177 extern void clear_quit_flag (void);
 178 /* Evaluate to non-zero if the quit flag is set, zero otherwise.  This
 179    will clear the quit flag as a side effect.  */
 180 extern int check_quit_flag (void);
 181 /* Set the quit flag.  */
 182 extern void set_quit_flag (void);
 183
 184 extern int immediate_quit;
 185
 186 extern void quit (void);
 187
 188 /* FIXME: cagney/2000-03-13: It has been suggested that the peformance
 189    benefits of having a ``QUIT'' macro rather than a function are
 190    marginal.  If the overhead of a QUIT function call is proving
 191    significant then its calling frequency should probably be reduced
 192    [kingdon].  A profile analyzing the current situtation is
 193    needed.  */
 194
 195 #define QUIT { \
 196   if (check_quit_flag ()) quit (); \
 197   if (deprecated_interactive_hook) deprecated_interactive_hook (); \
 198 }
 199
 200 /* Languages represented in the symbol table and elsewhere.
 201    This should probably be in language.h, but since enum's can't
 202    be forward declared to satisfy opaque references before their
 203    actual definition, needs to be here.  */
 204
 205 enum language
 206   {
 207     language_unknown,           /* Language not known */
 208     language_auto,              /* Placeholder for automatic setting */
 209     language_c,                 /* C */
 210     language_cplus,             /* C++ */
 211     language_d,                 /* D */
 212     language_go,                /* Go */
 213     language_objc,              /* Objective-C */
 214     language_java,              /* Java */
 215     language_fortran,           /* Fortran */
 216     language_m2,                /* Modula-2 */
 217     language_asm,               /* Assembly language */
 218     language_pascal,            /* Pascal */
 219     language_ada,               /* Ada */
 220     language_opencl,            /* OpenCL */
 221     language_minimal,           /* All other languages, minimal support only */
 222     nr_languages
 223   };
 224
 225 enum precision_type
 226   {
 227     single_precision,
 228     double_precision,
 229     unspecified_precision
 230   };
 231
 232 /* A generic, not quite boolean, enumeration.  */
 233 enum auto_boolean
 234 {
 235   AUTO_BOOLEAN_TRUE,
 236   AUTO_BOOLEAN_FALSE,
 237   AUTO_BOOLEAN_AUTO
 238 };
 239
 240 /* Potential ways that a function can return a value of a given type.  */
 241 enum return_value_convention
 242 {
 243   /* Where the return value has been squeezed into one or more
 244      registers.  */
 245   RETURN_VALUE_REGISTER_CONVENTION,
 246   /* Commonly known as the "struct return convention".  The caller
 247      passes an additional hidden first parameter to the caller.  That
 248      parameter contains the address at which the value being returned
 249      should be stored.  While typically, and historically, used for
 250      large structs, this is convention is applied to values of many
 251      different types.  */
 252   RETURN_VALUE_STRUCT_CONVENTION,
 253   /* Like the "struct return convention" above, but where the ABI
 254      guarantees that the called function stores the address at which
 255      the value being returned is stored in a well-defined location,
 256      such as a register or memory slot in the stack frame.  Don't use
 257      this if the ABI doesn't explicitly guarantees this.  */
 258   RETURN_VALUE_ABI_RETURNS_ADDRESS,
 259   /* Like the "struct return convention" above, but where the ABI
 260      guarantees that the address at which the value being returned is
 261      stored will be available in a well-defined location, such as a
 262      register or memory slot in the stack frame.  Don't use this if
 263      the ABI doesn't explicitly guarantees this.  */
 264   RETURN_VALUE_ABI_PRESERVES_ADDRESS,
 265 };
 266
 267 /* Needed for various prototypes */
 268
 269 struct symtab;
 270 struct breakpoint;
 271 struct frame_info;
 272 struct gdbarch;
 273 struct value;
 274
 275 /* From main.c.  */
 276
 277 /* This really belong in utils.c (path-utils.c?), but it references some
 278    globals that are currently only available to main.c.  */
 279 extern char *relocate_gdb_directory (const char *initial, int flag);
 280
 281 \f
 282 /* Annotation stuff.  */
 283
 284 extern int annotation_level;    /* in stack.c */
 285 \f
 286
 287 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 288    "const char *" in unistd.h, so we can't declare the argument
 289    as "char *".  */
 290
 291 extern char *re_comp (const char *);
 292
 293 /* From symfile.c */
 294
 295 extern void symbol_file_command (char *, int);
 296
 297 /* Remote targets may wish to use this as their load function.  */
 298 extern void generic_load (char *name, int from_tty);
 299
 300 /* Report on STREAM the performance of memory transfer operation,
 301    such as 'load'.
 302    DATA_COUNT is the number of bytes transferred.
 303    WRITE_COUNT is the number of separate write operations, or 0,
 304    if that information is not available.
 305    START_TIME is the time at which an operation was started.
 306    END_TIME is the time at which an operation ended.  */
 307 struct timeval;
 308 extern void print_transfer_performance (struct ui_file *stream,
 309                                         unsigned long data_count,
 310                                         unsigned long write_count,
 311                                         const struct timeval *start_time,
 312                                         const struct timeval *end_time);
 313
 314 /* From top.c */
 315
 316 typedef void initialize_file_ftype (void);
 317
 318 extern char *skip_quoted (char *);
 319
 320 extern char *gdb_readline (char *);
 321
 322 extern char *gdb_readline_wrapper (char *);
 323
 324 extern char *command_line_input (char *, int, char *);
 325
 326 extern void print_prompt (void);
 327
 328 extern int input_from_terminal_p (void);
 329
 330 extern int info_verbose;
 331
 332 /* From printcmd.c */
 333
 334 extern void set_next_address (struct gdbarch *, CORE_ADDR);
 335
 336 extern int print_address_symbolic (struct gdbarch *, CORE_ADDR,
 337                                    struct ui_file *, int, char *);
 338
 339 extern int build_address_symbolic (struct gdbarch *,
 340                                    CORE_ADDR addr,
 341                                    int do_demangle,
 342                                    char **name,
 343                                    int *offset,
 344                                    char **filename,
 345                                    int *line,
 346                                    int *unmapped);
 347
 348 extern void print_address (struct gdbarch *, CORE_ADDR, struct ui_file *);
 349 extern const char *pc_prefix (CORE_ADDR);
 350
 351 /* From source.c */
 352
 353 #define OPF_TRY_CWD_FIRST     0x01
 354 #define OPF_SEARCH_IN_PATH    0x02
 355
 356 extern int openp (const char *, int, const char *, int, char **);
 357
 358 extern int source_full_path_of (const char *, char **);
 359
 360 extern void mod_path (char *, char **);
 361
 362 extern void add_path (char *, char **, int);
 363
 364 extern void directory_command (char *, int);
 365
 366 extern void directory_switch (char *, int);
 367
 368 extern char *source_path;
 369
 370 extern void init_source_path (void);
 371
 372 /* From exec.c */
 373
 374 /* Process memory area starting at ADDR with length SIZE.  Area is readable iff
 375    READ is non-zero, writable if WRITE is non-zero, executable if EXEC is
 376    non-zero.  Area is possibly changed against its original file based copy if
 377    MODIFIED is non-zero.  DATA is passed without changes from a caller.  */
 378
 379 typedef int (*find_memory_region_ftype) (CORE_ADDR addr, unsigned long size,
 380                                          int read, int write, int exec,
 381                                          int modified, void *data);
 382
 383 /* Take over the 'find_mapped_memory' vector from exec.c.  */
 384 extern void exec_set_find_memory_regions
 385   (int (*func) (find_memory_region_ftype func, void *data));
 386
 387 /* Possible lvalue types.  Like enum language, this should be in
 388    value.h, but needs to be here for the same reason.  */
 389
 390 enum lval_type
 391   {
 392     /* Not an lval.  */
 393     not_lval,
 394     /* In memory.  */
 395     lval_memory,
 396     /* In a register.  Registers are relative to a frame.  */
 397     lval_register,
 398     /* In a gdb internal variable.  */
 399     lval_internalvar,
 400     /* Part of a gdb internal variable (structure field).  */
 401     lval_internalvar_component,
 402     /* Value's bits are fetched and stored using functions provided by
 403        its creator.  */
 404     lval_computed
 405   };
 406
 407 /* Control types for commands */
 408
 409 enum misc_command_type
 410   {
 411     ok_command,
 412     end_command,
 413     else_command,
 414     nop_command
 415   };
 416
 417 enum command_control_type
 418   {
 419     simple_control,
 420     break_control,
 421     continue_control,
 422     while_control,
 423     if_control,
 424     commands_control,
 425     python_control,
 426     while_stepping_control,
 427     invalid_control
 428   };
 429
 430 /* Structure for saved commands lines
 431    (for breakpoints, defined commands, etc).  */
 432
 433 struct command_line
 434   {
 435     struct command_line *next;
 436     char *line;
 437     enum command_control_type control_type;
 438     /* The number of elements in body_list.  */
 439     int body_count;
 440     /* For composite commands, the nested lists of commands.  For
 441        example, for "if" command this will contain the then branch and
 442        the else branch, if that is available.  */
 443     struct command_line **body_list;
 444   };
 445
 446 extern struct command_line *read_command_lines (char *, int, int,
 447                                                 void (*)(char *, void *),
 448                                                 void *);
 449 extern struct command_line *read_command_lines_1 (char * (*) (void), int,
 450                                                   void (*)(char *, void *),
 451                                                   void *);
 452
 453 extern void free_command_lines (struct command_line **);
 454
 455 /* Parameters of the "info proc" command.  */
 456
 457 enum info_proc_what
 458   {
 459     /* Display the default cmdline, cwd and exe outputs.  */
 460     IP_MINIMAL,
 461
 462     /* Display `info proc mappings'.  */
 463     IP_MAPPINGS,
 464
 465     /* Display `info proc status'.  */
 466     IP_STATUS,
 467
 468     /* Display `info proc stat'.  */
 469     IP_STAT,
 470
 471     /* Display `info proc cmdline'.  */
 472     IP_CMDLINE,
 473
 474     /* Display `info proc exe'.  */
 475     IP_EXE,
 476
 477     /* Display `info proc cwd'.  */
 478     IP_CWD,
 479
 480     /* Display all of the above.  */
 481     IP_ALL
 482   };
 483
 484 /* String containing the current directory (what getwd would return).  */
 485
 486 extern char *current_directory;
 487
 488 /* Default radixes for input and output.  Only some values supported.  */
 489 extern unsigned input_radix;
 490 extern unsigned output_radix;
 491
 492 /* Possibilities for prettyprint parameters to routines which print
 493    things.  Like enum language, this should be in value.h, but needs
 494    to be here for the same reason.  FIXME:  If we can eliminate this
 495    as an arg to LA_VAL_PRINT, then we can probably move it back to
 496    value.h.  */
 497
 498 enum val_prettyprint
 499   {
 500     Val_no_prettyprint = 0,
 501     Val_prettyprint,
 502     /* Use the default setting which the user has specified.  */
 503     Val_pretty_default
 504   };
 505
 506 /* Optional native machine support.  Non-native (and possibly pure
 507    multi-arch) targets do not need a "nm.h" file.  This will be a
 508    symlink to one of the nm-*.h files, built by the `configure'
 509    script.  */
 510
 511 #ifdef GDB_NM_FILE
 512 #include "nm.h"
 513 #endif
 514
 515 /* Assume that fopen accepts the letter "b" in the mode string.
 516    It is demanded by ISO C9X, and should be supported on all
 517    platforms that claim to have a standard-conforming C library.  On
 518    true POSIX systems it will be ignored and have no effect.  There
 519    may still be systems without a standard-conforming C library where
 520    an ISO C9X compiler (GCC) is available.  Known examples are SunOS
 521    4.x and 4.3BSD.  This assumption means these systems are no longer
 522    supported.  */
 523 #ifndef FOPEN_RB
 524 # include "fopen-bin.h"
 525 #endif
 526
 527 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 528    FIXME: Assumes 2's complement arithmetic.  */
 529
 530 #if !defined (UINT_MAX)
 531 #define UINT_MAX ((unsigned int)(~0))       /* 0xFFFFFFFF for 32-bits */
 532 #endif
 533
 534 #if !defined (INT_MAX)
 535 #define INT_MAX ((int)(UINT_MAX >> 1))      /* 0x7FFFFFFF for 32-bits */
 536 #endif
 537
 538 #if !defined (INT_MIN)
 539 #define INT_MIN ((int)((int) ~0 ^ INT_MAX)) /* 0x80000000 for 32-bits */
 540 #endif
 541
 542 #if !defined (ULONG_MAX)
 543 #define ULONG_MAX ((unsigned long)(~0L))    /* 0xFFFFFFFF for 32-bits */
 544 #endif
 545
 546 #if !defined (LONG_MAX)
 547 #define LONG_MAX ((long)(ULONG_MAX >> 1))   /* 0x7FFFFFFF for 32-bits */
 548 #endif
 549
 550 #if !defined (ULONGEST_MAX)
 551 #define ULONGEST_MAX (~(ULONGEST)0)        /* 0xFFFFFFFFFFFFFFFF for 64-bits */
 552 #endif
 553
 554 #if !defined (LONGEST_MAX)                 /* 0x7FFFFFFFFFFFFFFF for 64-bits */
 555 #define LONGEST_MAX ((LONGEST)(ULONGEST_MAX >> 1))
 556 #endif
 557
 558 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 559    arguments to a function, number in a value history, register number, etc.)
 560    where the value must not be larger than can fit in an int.  */
 561
 562 extern int longest_to_int (LONGEST);
 563
 564 /* Utility macros to allocate typed memory.  Avoids errors like:
 565    struct foo *foo = xmalloc (sizeof struct bar); and memset (foo,
 566    sizeof (struct foo), 0).  */
 567 #define XZALLOC(TYPE) ((TYPE*) xzalloc (sizeof (TYPE)))
 568 #define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
 569 #define XCALLOC(NMEMB, TYPE) ((TYPE*) xcalloc ((NMEMB), sizeof (TYPE)))
 570
 571 #include "common-utils.h"
 572
 573 /* List of known OS ABIs.  If you change this, make sure to update the
 574    table in osabi.c.  */
 575 enum gdb_osabi
 576 {
 577   GDB_OSABI_UNINITIALIZED = -1, /* For struct gdbarch_info.  */
 578
 579   GDB_OSABI_UNKNOWN = 0,        /* keep this zero */
 580
 581   GDB_OSABI_SVR4,
 582   GDB_OSABI_HURD,
 583   GDB_OSABI_SOLARIS,
 584   GDB_OSABI_OSF1,
 585   GDB_OSABI_LINUX,
 586   GDB_OSABI_FREEBSD_AOUT,
 587   GDB_OSABI_FREEBSD_ELF,
 588   GDB_OSABI_NETBSD_AOUT,
 589   GDB_OSABI_NETBSD_ELF,
 590   GDB_OSABI_OPENBSD_ELF,
 591   GDB_OSABI_WINCE,
 592   GDB_OSABI_GO32,
 593   GDB_OSABI_IRIX,
 594   GDB_OSABI_INTERIX,
 595   GDB_OSABI_HPUX_ELF,
 596   GDB_OSABI_HPUX_SOM,
 597   GDB_OSABI_QNXNTO,
 598   GDB_OSABI_CYGWIN,
 599   GDB_OSABI_AIX,
 600   GDB_OSABI_DICOS,
 601   GDB_OSABI_DARWIN,
 602   GDB_OSABI_SYMBIAN,
 603   GDB_OSABI_OPENVMS,
 604
 605   GDB_OSABI_INVALID             /* keep this last */
 606 };
 607
 608 /* Global functions from other, non-gdb GNU thingies.
 609    Libiberty thingies are no longer declared here.  We include libiberty.h
 610    above, instead.  */
 611
 612 /* From other system libraries */
 613
 614 #ifdef HAVE_STDDEF_H
 615 #include <stddef.h>
 616 #endif
 617
 618 #ifdef HAVE_STDLIB_H
 619 #include <stdlib.h>
 620 #endif
 621 #ifndef min
 622 #define min(a, b) ((a) < (b) ? (a) : (b))
 623 #endif
 624 #ifndef max
 625 #define max(a, b) ((a) > (b) ? (a) : (b))
 626 #endif
 627
 628
 629 #ifndef atof
 630 extern double atof (const char *);      /* X3.159-1989  4.10.1.1 */
 631 #endif
 632
 633 /* Various possibilities for alloca.  */
 634 #ifndef alloca
 635 #ifdef __GNUC__
 636 #define alloca __builtin_alloca
 637 #else /* Not GNU C */
 638 #ifdef HAVE_ALLOCA_H
 639 #include <alloca.h>
 640 #else
 641 #ifdef _AIX
 642 #pragma alloca
 643 #else
 644
 645 /* We need to be careful not to declare this in a way which conflicts with
 646    bison.  Bison never declares it as char *, but under various circumstances
 647    (like __hpux) we need to use void *.  */
 648 extern void *alloca ();
 649 #endif /* Not _AIX */
 650 #endif /* Not HAVE_ALLOCA_H */
 651 #endif /* Not GNU C */
 652 #endif /* alloca not defined */
 653
 654 /* Dynamic target-system-dependent parameters for GDB.  */
 655 #include "gdbarch.h"
 656
 657 /* Maximum size of a register.  Something small, but large enough for
 658    all known ISAs.  If it turns out to be too small, make it bigger.  */
 659
 660 enum { MAX_REGISTER_SIZE = 64 };
 661
 662 /* Static target-system-dependent parameters for GDB.  */
 663
 664 /* Number of bits in a char or unsigned char for the target machine.
 665    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 666 #if !defined (TARGET_CHAR_BIT)
 667 #define TARGET_CHAR_BIT 8
 668 #endif
 669
 670 /* If we picked up a copy of CHAR_BIT from a configuration file
 671    (which may get it by including <limits.h>) then use it to set
 672    the number of bits in a host char.  If not, use the same size
 673    as the target.  */
 674
 675 #if defined (CHAR_BIT)
 676 #define HOST_CHAR_BIT CHAR_BIT
 677 #else
 678 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 679 #endif
 680
 681 /* In findvar.c.  */
 682
 683 extern LONGEST extract_signed_integer (const gdb_byte *, int,
 684                                        enum bfd_endian);
 685
 686 extern ULONGEST extract_unsigned_integer (const gdb_byte *, int,
 687                                           enum bfd_endian);
 688
 689 extern int extract_long_unsigned_integer (const gdb_byte *, int,
 690                                           enum bfd_endian, LONGEST *);
 691
 692 extern CORE_ADDR extract_typed_address (const gdb_byte *buf,
 693                                         struct type *type);
 694
 695 extern void store_signed_integer (gdb_byte *, int,
 696                                   enum bfd_endian, LONGEST);
 697
 698 extern void store_unsigned_integer (gdb_byte *, int,
 699                                     enum bfd_endian, ULONGEST);
 700
 701 extern void store_typed_address (gdb_byte *buf, struct type *type,
 702                                  CORE_ADDR addr);
 703
 704 \f
 705 /* From valops.c */
 706
 707 extern int watchdog;
 708
 709 /* Hooks for alternate command interfaces.  */
 710
 711 /* The name of the interpreter if specified on the command line.  */
 712 extern char *interpreter_p;
 713
 714 /* If a given interpreter matches INTERPRETER_P then it should update
 715    deprecated_command_loop_hook and deprecated_init_ui_hook with the
 716    per-interpreter implementation.  */
 717 /* FIXME: deprecated_command_loop_hook and deprecated_init_ui_hook
 718    should be moved here.  */
 719
 720 struct target_waitstatus;
 721 struct cmd_list_element;
 722
 723 extern void (*deprecated_pre_add_symbol_hook) (const char *);
 724 extern void (*deprecated_post_add_symbol_hook) (void);
 725 extern void (*selected_frame_level_changed_hook) (int);
 726 extern int (*deprecated_ui_loop_hook) (int signo);
 727 extern void (*deprecated_init_ui_hook) (char *argv0);
 728 extern void (*deprecated_command_loop_hook) (void);
 729 extern void (*deprecated_show_load_progress) (const char *section,
 730                                               unsigned long section_sent,
 731                                               unsigned long section_size,
 732                                               unsigned long total_sent,
 733                                               unsigned long total_size);
 734 extern void (*deprecated_print_frame_info_listing_hook) (struct symtab * s,
 735                                                          int line,
 736                                                          int stopline,
 737                                                          int noerror);
 738 extern int (*deprecated_query_hook) (const char *, va_list)
 739      ATTRIBUTE_FPTR_PRINTF(1,0);
 740 extern void (*deprecated_warning_hook) (const char *, va_list)
 741      ATTRIBUTE_FPTR_PRINTF(1,0);
 742 extern void (*deprecated_flush_hook) (struct ui_file * stream);
 743 extern void (*deprecated_interactive_hook) (void);
 744 extern void (*deprecated_readline_begin_hook) (char *, ...)
 745      ATTRIBUTE_FPTR_PRINTF_1;
 746 extern char *(*deprecated_readline_hook) (char *);
 747 extern void (*deprecated_readline_end_hook) (void);
 748 extern void (*deprecated_register_changed_hook) (int regno);
 749 extern void (*deprecated_context_hook) (int);
 750 extern ptid_t (*deprecated_target_wait_hook) (ptid_t ptid,
 751                                               struct target_waitstatus *status,
 752                                               int options);
 753
 754 extern void (*deprecated_attach_hook) (void);
 755 extern void (*deprecated_detach_hook) (void);
 756 extern void (*deprecated_call_command_hook) (struct cmd_list_element * c,
 757                                              char *cmd, int from_tty);
 758
 759 extern void (*deprecated_set_hook) (struct cmd_list_element * c);
 760
 761 extern int (*deprecated_ui_load_progress_hook) (const char *section,
 762                                                 unsigned long num);
 763
 764 /* Inhibit window interface if non-zero.  */
 765
 766 extern int use_windows;
 767
 768 /* Provide default definitions of PIDGET, TIDGET, and MERGEPID.
 769    The name ``TIDGET'' is a historical accident.  Many uses of TIDGET
 770    in the code actually refer to a lightweight process id, i.e,
 771    something that can be considered a process id in its own right for
 772    certain purposes.  */
 773
 774 #ifndef PIDGET
 775 #define PIDGET(PTID) (ptid_get_pid (PTID))
 776 #define TIDGET(PTID) (ptid_get_lwp (PTID))
 777 #define MERGEPID(PID, TID) ptid_build (PID, TID, 0)
 778 #endif
 779
 780 /* Define well known filenos if the system does not define them.  */
 781 #ifndef STDIN_FILENO
 782 #define STDIN_FILENO   0
 783 #endif
 784 #ifndef STDOUT_FILENO
 785 #define STDOUT_FILENO  1
 786 #endif
 787 #ifndef STDERR_FILENO
 788 #define STDERR_FILENO  2
 789 #endif
 790
 791 /* If this definition isn't overridden by the header files, assume
 792    that isatty and fileno exist on this system.  */
 793 #ifndef ISATTY
 794 #define ISATTY(FP)      (isatty (fileno (FP)))
 795 #endif
 796
 797 /* A width that can achieve a better legibility for GDB MI mode.  */
 798 #define GDB_MI_MSG_WIDTH  80
 799
 800 /* From progspace.c */
 801
 802 extern void initialize_progspace (void);
 803 extern void initialize_inferiors (void);
 804
 805 /* Special block numbers */
 806
 807 enum block_enum
 808 {
 809   GLOBAL_BLOCK = 0,
 810   STATIC_BLOCK = 1,
 811   FIRST_LOCAL_BLOCK = 2
 812 };
 813
 814 #include "utils.h"
 815
 816 #endif /* #ifndef DEFS_H */