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
  31 #include <sys/types.h>
  32 #include <stdio.h>
  33 #include <errno.h>              /* System call error return status.  */
  34 #include <limits.h>
  35 #include <stdint.h>
  36
  37 /* The libdecnumber library, on which GDB depends, includes a header file
  38    called gstdint.h instead of relying directly on stdint.h.  GDB, on the
  39    other hand, includes stdint.h directly, relying on the fact that gnulib
  40    generates a copy if the system doesn't provide one or if it is missing
  41    some features.  Unfortunately, gstdint.h and stdint.h cannot be included
  42    at the same time, which may happen when we include a file from
  43    libdecnumber.
  44
  45    The following macro definition effectively prevents the inclusion of
  46    gstdint.h, as all the definitions it provides are guarded against
  47    the GCC_GENERATED_STDINT_H macro.  We already have gnulib/stdint.h
  48    included, so it's ok to blank out gstdint.h.  */
  49 #define GCC_GENERATED_STDINT_H 1
  50
  51 #ifdef HAVE_STDDEF_H
  52 #include <stddef.h>
  53 #endif
  54
  55 #ifdef HAVE_UNISTD_H
  56 #include <unistd.h>
  57 #endif
  58
  59 #include <fcntl.h>
  60
  61 /* First include ansidecl.h so we can use the various macro definitions
  62    here and in all subsequent file inclusions.  */
  63
  64 #include "ansidecl.h"
  65
  66 #include "gdb_locale.h"
  67
  68 #include "gdb_wchar.h"
  69
  70 /* For ``enum gdb_signal''.  */
  71 #include "gdb/signals.h"
  72
  73 #include "ui-file.h"
  74
  75 #include "host-defs.h"
  76
  77 /* Just in case they're not defined in stdio.h.  */
  78
  79 #ifndef SEEK_SET
  80 #define SEEK_SET 0
  81 #endif
  82 #ifndef SEEK_CUR
  83 #define SEEK_CUR 1
  84 #endif
  85
  86 /* The O_BINARY flag is defined in fcntl.h on some non-Posix platforms.
  87    It is used as an access modifier in calls to open(), where it acts
  88    similarly to the "b" character in fopen()'s MODE argument.  On Posix
  89    platforms it should be a no-op, so it is defined as 0 here.  This
  90    ensures that the symbol may be used freely elsewhere in gdb.  */
  91
  92 #ifndef O_BINARY
  93 #define O_BINARY 0
  94 #endif
  95
  96 #include <stdarg.h>             /* For va_list.  */
  97
  98 #include "libiberty.h"
  99 #include "hashtab.h"
 100
 101 /* Rather than duplicate all the logic in BFD for figuring out what
 102    types to use (which can be pretty complicated), symply define them
 103    in terms of the corresponding type from BFD.  */
 104
 105 #include "bfd.h"
 106
 107 /* A byte from the program being debugged.  */
 108 typedef bfd_byte gdb_byte;
 109
 110 /* An address in the program being debugged.  Host byte order.  */
 111 typedef bfd_vma CORE_ADDR;
 112
 113 /* The largest CORE_ADDR value.  */
 114 #define CORE_ADDR_MAX (~ (CORE_ADDR) 0)
 115
 116 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
 117
 118 #ifndef LONGEST
 119
 120 #ifdef BFD64
 121
 122 #define LONGEST BFD_HOST_64_BIT
 123 #define ULONGEST BFD_HOST_U_64_BIT
 124
 125 #else /* No BFD64 */
 126
 127 #ifdef CC_HAS_LONG_LONG
 128 #define LONGEST long long
 129 #define ULONGEST unsigned long long
 130 #else
 131 #ifdef BFD_HOST_64_BIT
 132 /* BFD_HOST_64_BIT is defined for some hosts that don't have long long
 133    (e.g. i386-windows) so try it.  */
 134 #define LONGEST BFD_HOST_64_BIT
 135 #define ULONGEST BFD_HOST_U_64_BIT
 136 #else
 137 #define LONGEST long
 138 #define ULONGEST unsigned long
 139 #endif
 140 #endif
 141
 142 #endif /* No BFD64 */
 143
 144 #endif /* ! LONGEST */
 145
 146 #ifndef min
 147 #define min(a, b) ((a) < (b) ? (a) : (b))
 148 #endif
 149 #ifndef max
 150 #define max(a, b) ((a) > (b) ? (a) : (b))
 151 #endif
 152
 153 #include "ptid.h"
 154
 155 /* Enable xdb commands if set.  */
 156 extern int xdb_commands;
 157
 158 /* Enable dbx commands if set.  */
 159 extern int dbx_commands;
 160
 161 /* System root path, used to find libraries etc.  */
 162 extern char *gdb_sysroot;
 163
 164 /* GDB datadir, used to store data files.  */
 165 extern char *gdb_datadir;
 166
 167 /* If non-NULL, the possibly relocated path to python's "lib" directory
 168    specified with --with-python.  */
 169 extern char *python_libdir;
 170
 171 /* Search path for separate debug files.  */
 172 extern char *debug_file_directory;
 173
 174 /* GDB has two methods for handling SIGINT.  When immediate_quit is
 175    nonzero, a SIGINT results in an immediate longjmp out of the signal
 176    handler.  Otherwise, SIGINT simply sets a flag; code that might
 177    take a long time, and which ought to be interruptible, checks this
 178    flag using the QUIT macro.
 179
 180    If GDB is built with Python support, it uses Python's low-level
 181    interface to implement the flag.  This approach makes it possible
 182    for Python and GDB SIGINT handling to coexist seamlessly.
 183
 184    If GDB is built without Python, it instead uses its traditional
 185    variables.  */
 186
 187 /* Clear the quit flag.  */
 188 extern void clear_quit_flag (void);
 189 /* Evaluate to non-zero if the quit flag is set, zero otherwise.  This
 190    will clear the quit flag as a side effect.  */
 191 extern int check_quit_flag (void);
 192 /* Set the quit flag.  */
 193 extern void set_quit_flag (void);
 194
 195 extern int immediate_quit;
 196
 197 extern void quit (void);
 198
 199 /* FIXME: cagney/2000-03-13: It has been suggested that the peformance
 200    benefits of having a ``QUIT'' macro rather than a function are
 201    marginal.  If the overhead of a QUIT function call is proving
 202    significant then its calling frequency should probably be reduced
 203    [kingdon].  A profile analyzing the current situtation is
 204    needed.  */
 205
 206 #define QUIT { \
 207   if (check_quit_flag ()) quit (); \
 208   if (deprecated_interactive_hook) deprecated_interactive_hook (); \
 209 }
 210
 211 /* Languages represented in the symbol table and elsewhere.
 212    This should probably be in language.h, but since enum's can't
 213    be forward declared to satisfy opaque references before their
 214    actual definition, needs to be here.  */
 215
 216 enum language
 217   {
 218     language_unknown,           /* Language not known */
 219     language_auto,              /* Placeholder for automatic setting */
 220     language_c,                 /* C */
 221     language_cplus,             /* C++ */
 222     language_d,                 /* D */
 223     language_go,                /* Go */
 224     language_objc,              /* Objective-C */
 225     language_java,              /* Java */
 226     language_fortran,           /* Fortran */
 227     language_m2,                /* Modula-2 */
 228     language_asm,               /* Assembly language */
 229     language_pascal,            /* Pascal */
 230     language_ada,               /* Ada */
 231     language_opencl,            /* OpenCL */
 232     language_minimal,           /* All other languages, minimal support only */
 233     nr_languages
 234   };
 235
 236 enum precision_type
 237   {
 238     single_precision,
 239     double_precision,
 240     unspecified_precision
 241   };
 242
 243 /* A generic, not quite boolean, enumeration.  */
 244 enum auto_boolean
 245 {
 246   AUTO_BOOLEAN_TRUE,
 247   AUTO_BOOLEAN_FALSE,
 248   AUTO_BOOLEAN_AUTO
 249 };
 250
 251 /* Potential ways that a function can return a value of a given type.  */
 252 enum return_value_convention
 253 {
 254   /* Where the return value has been squeezed into one or more
 255      registers.  */
 256   RETURN_VALUE_REGISTER_CONVENTION,
 257   /* Commonly known as the "struct return convention".  The caller
 258      passes an additional hidden first parameter to the caller.  That
 259      parameter contains the address at which the value being returned
 260      should be stored.  While typically, and historically, used for
 261      large structs, this is convention is applied to values of many
 262      different types.  */
 263   RETURN_VALUE_STRUCT_CONVENTION,
 264   /* Like the "struct return convention" above, but where the ABI
 265      guarantees that the called function stores the address at which
 266      the value being returned is stored in a well-defined location,
 267      such as a register or memory slot in the stack frame.  Don't use
 268      this if the ABI doesn't explicitly guarantees this.  */
 269   RETURN_VALUE_ABI_RETURNS_ADDRESS,
 270   /* Like the "struct return convention" above, but where the ABI
 271      guarantees that the address at which the value being returned is
 272      stored will be available in a well-defined location, such as a
 273      register or memory slot in the stack frame.  Don't use this if
 274      the ABI doesn't explicitly guarantees this.  */
 275   RETURN_VALUE_ABI_PRESERVES_ADDRESS,
 276 };
 277
 278 /* Needed for various prototypes */
 279
 280 struct symtab;
 281 struct breakpoint;
 282 struct frame_info;
 283 struct gdbarch;
 284 struct value;
 285
 286 /* From main.c.  */
 287
 288 /* This really belong in utils.c (path-utils.c?), but it references some
 289    globals that are currently only available to main.c.  */
 290 extern char *relocate_gdb_directory (const char *initial, int flag);
 291
 292 \f
 293 /* Annotation stuff.  */
 294
 295 extern int annotation_level;    /* in stack.c */
 296 \f
 297
 298 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 299    "const char *" in unistd.h, so we can't declare the argument
 300    as "char *".  */
 301
 302 extern char *re_comp (const char *);
 303
 304 /* From symfile.c */
 305
 306 extern void symbol_file_command (char *, int);
 307
 308 /* Remote targets may wish to use this as their load function.  */
 309 extern void generic_load (char *name, int from_tty);
 310
 311 /* Report on STREAM the performance of memory transfer operation,
 312    such as 'load'.
 313    DATA_COUNT is the number of bytes transferred.
 314    WRITE_COUNT is the number of separate write operations, or 0,
 315    if that information is not available.
 316    START_TIME is the time at which an operation was started.
 317    END_TIME is the time at which an operation ended.  */
 318 struct timeval;
 319 extern void print_transfer_performance (struct ui_file *stream,
 320                                         unsigned long data_count,
 321                                         unsigned long write_count,
 322                                         const struct timeval *start_time,
 323                                         const struct timeval *end_time);
 324
 325 /* From top.c */
 326
 327 typedef void initialize_file_ftype (void);
 328
 329 extern char *skip_quoted (char *);
 330
 331 extern char *gdb_readline (char *);
 332
 333 extern char *gdb_readline_wrapper (char *);
 334
 335 extern char *command_line_input (char *, int, char *);
 336
 337 extern void print_prompt (void);
 338
 339 extern int input_from_terminal_p (void);
 340
 341 extern int info_verbose;
 342
 343 /* From printcmd.c */
 344
 345 extern void set_next_address (struct gdbarch *, CORE_ADDR);
 346
 347 extern int print_address_symbolic (struct gdbarch *, CORE_ADDR,
 348                                    struct ui_file *, int, char *);
 349
 350 extern int build_address_symbolic (struct gdbarch *,
 351                                    CORE_ADDR addr,
 352                                    int do_demangle,
 353                                    char **name,
 354                                    int *offset,
 355                                    char **filename,
 356                                    int *line,
 357                                    int *unmapped);
 358
 359 extern void print_address (struct gdbarch *, CORE_ADDR, struct ui_file *);
 360 extern const char *pc_prefix (CORE_ADDR);
 361
 362 /* From source.c */
 363
 364 #define OPF_TRY_CWD_FIRST     0x01
 365 #define OPF_SEARCH_IN_PATH    0x02
 366
 367 extern int openp (const char *, int, const char *, int, char **);
 368
 369 extern int source_full_path_of (const char *, char **);
 370
 371 extern void mod_path (char *, char **);
 372
 373 extern void add_path (char *, char **, int);
 374
 375 extern void directory_command (char *, int);
 376
 377 extern void directory_switch (char *, int);
 378
 379 extern char *source_path;
 380
 381 extern void init_source_path (void);
 382
 383 /* From exec.c */
 384
 385 /* Process memory area starting at ADDR with length SIZE.  Area is readable iff
 386    READ is non-zero, writable if WRITE is non-zero, executable if EXEC is
 387    non-zero.  Area is possibly changed against its original file based copy if
 388    MODIFIED is non-zero.  DATA is passed without changes from a caller.  */
 389
 390 typedef int (*find_memory_region_ftype) (CORE_ADDR addr, unsigned long size,
 391                                          int read, int write, int exec,
 392                                          int modified, void *data);
 393
 394 /* Take over the 'find_mapped_memory' vector from exec.c.  */
 395 extern void exec_set_find_memory_regions
 396   (int (*func) (find_memory_region_ftype func, void *data));
 397
 398 /* Possible lvalue types.  Like enum language, this should be in
 399    value.h, but needs to be here for the same reason.  */
 400
 401 enum lval_type
 402   {
 403     /* Not an lval.  */
 404     not_lval,
 405     /* In memory.  */
 406     lval_memory,
 407     /* In a register.  Registers are relative to a frame.  */
 408     lval_register,
 409     /* In a gdb internal variable.  */
 410     lval_internalvar,
 411     /* Part of a gdb internal variable (structure field).  */
 412     lval_internalvar_component,
 413     /* Value's bits are fetched and stored using functions provided by
 414        its creator.  */
 415     lval_computed
 416   };
 417
 418 /* Control types for commands */
 419
 420 enum misc_command_type
 421   {
 422     ok_command,
 423     end_command,
 424     else_command,
 425     nop_command
 426   };
 427
 428 enum command_control_type
 429   {
 430     simple_control,
 431     break_control,
 432     continue_control,
 433     while_control,
 434     if_control,
 435     commands_control,
 436     python_control,
 437     while_stepping_control,
 438     invalid_control
 439   };
 440
 441 /* Structure for saved commands lines
 442    (for breakpoints, defined commands, etc).  */
 443
 444 struct command_line
 445   {
 446     struct command_line *next;
 447     char *line;
 448     enum command_control_type control_type;
 449     /* The number of elements in body_list.  */
 450     int body_count;
 451     /* For composite commands, the nested lists of commands.  For
 452        example, for "if" command this will contain the then branch and
 453        the else branch, if that is available.  */
 454     struct command_line **body_list;
 455   };
 456
 457 extern struct command_line *read_command_lines (char *, int, int,
 458                                                 void (*)(char *, void *),
 459                                                 void *);
 460 extern struct command_line *read_command_lines_1 (char * (*) (void), int,
 461                                                   void (*)(char *, void *),
 462                                                   void *);
 463
 464 extern void free_command_lines (struct command_line **);
 465
 466 /* Parameters of the "info proc" command.  */
 467
 468 enum info_proc_what
 469   {
 470     /* Display the default cmdline, cwd and exe outputs.  */
 471     IP_MINIMAL,
 472
 473     /* Display `info proc mappings'.  */
 474     IP_MAPPINGS,
 475
 476     /* Display `info proc status'.  */
 477     IP_STATUS,
 478
 479     /* Display `info proc stat'.  */
 480     IP_STAT,
 481
 482     /* Display `info proc cmdline'.  */
 483     IP_CMDLINE,
 484
 485     /* Display `info proc exe'.  */
 486     IP_EXE,
 487
 488     /* Display `info proc cwd'.  */
 489     IP_CWD,
 490
 491     /* Display all of the above.  */
 492     IP_ALL
 493   };
 494
 495 /* String containing the current directory (what getwd would return).  */
 496
 497 extern char *current_directory;
 498
 499 /* Default radixes for input and output.  Only some values supported.  */
 500 extern unsigned input_radix;
 501 extern unsigned output_radix;
 502
 503 /* Possibilities for prettyprint parameters to routines which print
 504    things.  Like enum language, this should be in value.h, but needs
 505    to be here for the same reason.  FIXME:  If we can eliminate this
 506    as an arg to LA_VAL_PRINT, then we can probably move it back to
 507    value.h.  */
 508
 509 enum val_prettyprint
 510   {
 511     Val_no_prettyprint = 0,
 512     Val_prettyprint,
 513     /* Use the default setting which the user has specified.  */
 514     Val_pretty_default
 515   };
 516
 517 /* Optional native machine support.  Non-native (and possibly pure
 518    multi-arch) targets do not need a "nm.h" file.  This will be a
 519    symlink to one of the nm-*.h files, built by the `configure'
 520    script.  */
 521
 522 #ifdef GDB_NM_FILE
 523 #include "nm.h"
 524 #endif
 525
 526 /* Assume that fopen accepts the letter "b" in the mode string.
 527    It is demanded by ISO C9X, and should be supported on all
 528    platforms that claim to have a standard-conforming C library.  On
 529    true POSIX systems it will be ignored and have no effect.  There
 530    may still be systems without a standard-conforming C library where
 531    an ISO C9X compiler (GCC) is available.  Known examples are SunOS
 532    4.x and 4.3BSD.  This assumption means these systems are no longer
 533    supported.  */
 534 #ifndef FOPEN_RB
 535 # include "fopen-bin.h"
 536 #endif
 537
 538 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 539    FIXME: Assumes 2's complement arithmetic.  */
 540
 541 #if !defined (UINT_MAX)
 542 #define UINT_MAX ((unsigned int)(~0))       /* 0xFFFFFFFF for 32-bits */
 543 #endif
 544
 545 #if !defined (INT_MAX)
 546 #define INT_MAX ((int)(UINT_MAX >> 1))      /* 0x7FFFFFFF for 32-bits */
 547 #endif
 548
 549 #if !defined (INT_MIN)
 550 #define INT_MIN ((int)((int) ~0 ^ INT_MAX)) /* 0x80000000 for 32-bits */
 551 #endif
 552
 553 #if !defined (ULONG_MAX)
 554 #define ULONG_MAX ((unsigned long)(~0L))    /* 0xFFFFFFFF for 32-bits */
 555 #endif
 556
 557 #if !defined (LONG_MAX)
 558 #define LONG_MAX ((long)(ULONG_MAX >> 1))   /* 0x7FFFFFFF for 32-bits */
 559 #endif
 560
 561 #if !defined (ULONGEST_MAX)
 562 #define ULONGEST_MAX (~(ULONGEST)0)        /* 0xFFFFFFFFFFFFFFFF for 64-bits */
 563 #endif
 564
 565 #if !defined (LONGEST_MAX)                 /* 0x7FFFFFFFFFFFFFFF for 64-bits */
 566 #define LONGEST_MAX ((LONGEST)(ULONGEST_MAX >> 1))
 567 #endif
 568
 569 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 570    arguments to a function, number in a value history, register number, etc.)
 571    where the value must not be larger than can fit in an int.  */
 572
 573 extern int longest_to_int (LONGEST);
 574
 575 /* Utility macros to allocate typed memory.  Avoids errors like:
 576    struct foo *foo = xmalloc (sizeof struct bar); and memset (foo,
 577    sizeof (struct foo), 0).  */
 578 #define XZALLOC(TYPE) ((TYPE*) xzalloc (sizeof (TYPE)))
 579 #define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
 580 #define XCALLOC(NMEMB, TYPE) ((TYPE*) xcalloc ((NMEMB), sizeof (TYPE)))
 581
 582 #include "common-utils.h"
 583
 584 /* List of known OS ABIs.  If you change this, make sure to update the
 585    table in osabi.c.  */
 586 enum gdb_osabi
 587 {
 588   GDB_OSABI_UNINITIALIZED = -1, /* For struct gdbarch_info.  */
 589
 590   GDB_OSABI_UNKNOWN = 0,        /* keep this zero */
 591
 592   GDB_OSABI_SVR4,
 593   GDB_OSABI_HURD,
 594   GDB_OSABI_SOLARIS,
 595   GDB_OSABI_OSF1,
 596   GDB_OSABI_LINUX,
 597   GDB_OSABI_FREEBSD_AOUT,
 598   GDB_OSABI_FREEBSD_ELF,
 599   GDB_OSABI_NETBSD_AOUT,
 600   GDB_OSABI_NETBSD_ELF,
 601   GDB_OSABI_OPENBSD_ELF,
 602   GDB_OSABI_WINCE,
 603   GDB_OSABI_GO32,
 604   GDB_OSABI_IRIX,
 605   GDB_OSABI_INTERIX,
 606   GDB_OSABI_HPUX_ELF,
 607   GDB_OSABI_HPUX_SOM,
 608   GDB_OSABI_QNXNTO,
 609   GDB_OSABI_CYGWIN,
 610   GDB_OSABI_AIX,
 611   GDB_OSABI_DICOS,
 612   GDB_OSABI_DARWIN,
 613   GDB_OSABI_SYMBIAN,
 614   GDB_OSABI_OPENVMS,
 615
 616   GDB_OSABI_INVALID             /* keep this last */
 617 };
 618
 619 /* Global functions from other, non-gdb GNU thingies.
 620    Libiberty thingies are no longer declared here.  We include libiberty.h
 621    above, instead.  */
 622
 623 /* From other system libraries */
 624
 625 #ifdef HAVE_STDDEF_H
 626 #include <stddef.h>
 627 #endif
 628
 629 #ifdef HAVE_STDLIB_H
 630 #include <stdlib.h>
 631 #endif
 632 #ifndef min
 633 #define min(a, b) ((a) < (b) ? (a) : (b))
 634 #endif
 635 #ifndef max
 636 #define max(a, b) ((a) > (b) ? (a) : (b))
 637 #endif
 638
 639
 640 #ifndef atof
 641 extern double atof (const char *);      /* X3.159-1989  4.10.1.1 */
 642 #endif
 643
 644 /* Various possibilities for alloca.  */
 645 #ifndef alloca
 646 #ifdef __GNUC__
 647 #define alloca __builtin_alloca
 648 #else /* Not GNU C */
 649 #ifdef HAVE_ALLOCA_H
 650 #include <alloca.h>
 651 #else
 652 #ifdef _AIX
 653 #pragma alloca
 654 #else
 655
 656 /* We need to be careful not to declare this in a way which conflicts with
 657    bison.  Bison never declares it as char *, but under various circumstances
 658    (like __hpux) we need to use void *.  */
 659 extern void *alloca ();
 660 #endif /* Not _AIX */
 661 #endif /* Not HAVE_ALLOCA_H */
 662 #endif /* Not GNU C */
 663 #endif /* alloca not defined */
 664
 665 /* Dynamic target-system-dependent parameters for GDB.  */
 666 #include "gdbarch.h"
 667
 668 /* Maximum size of a register.  Something small, but large enough for
 669    all known ISAs.  If it turns out to be too small, make it bigger.  */
 670
 671 enum { MAX_REGISTER_SIZE = 64 };
 672
 673 /* Static target-system-dependent parameters for GDB.  */
 674
 675 /* Number of bits in a char or unsigned char for the target machine.
 676    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 677 #if !defined (TARGET_CHAR_BIT)
 678 #define TARGET_CHAR_BIT 8
 679 #endif
 680
 681 /* If we picked up a copy of CHAR_BIT from a configuration file
 682    (which may get it by including <limits.h>) then use it to set
 683    the number of bits in a host char.  If not, use the same size
 684    as the target.  */
 685
 686 #if defined (CHAR_BIT)
 687 #define HOST_CHAR_BIT CHAR_BIT
 688 #else
 689 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 690 #endif
 691
 692 /* In findvar.c.  */
 693
 694 extern LONGEST extract_signed_integer (const gdb_byte *, int,
 695                                        enum bfd_endian);
 696
 697 extern ULONGEST extract_unsigned_integer (const gdb_byte *, int,
 698                                           enum bfd_endian);
 699
 700 extern int extract_long_unsigned_integer (const gdb_byte *, int,
 701                                           enum bfd_endian, LONGEST *);
 702
 703 extern CORE_ADDR extract_typed_address (const gdb_byte *buf,
 704                                         struct type *type);
 705
 706 extern void store_signed_integer (gdb_byte *, int,
 707                                   enum bfd_endian, LONGEST);
 708
 709 extern void store_unsigned_integer (gdb_byte *, int,
 710                                     enum bfd_endian, ULONGEST);
 711
 712 extern void store_typed_address (gdb_byte *buf, struct type *type,
 713                                  CORE_ADDR addr);
 714
 715 \f
 716 /* From valops.c */
 717
 718 extern int watchdog;
 719
 720 /* Hooks for alternate command interfaces.  */
 721
 722 /* The name of the interpreter if specified on the command line.  */
 723 extern char *interpreter_p;
 724
 725 /* If a given interpreter matches INTERPRETER_P then it should update
 726    deprecated_command_loop_hook and deprecated_init_ui_hook with the
 727    per-interpreter implementation.  */
 728 /* FIXME: deprecated_command_loop_hook and deprecated_init_ui_hook
 729    should be moved here.  */
 730
 731 struct target_waitstatus;
 732 struct cmd_list_element;
 733
 734 extern void (*deprecated_pre_add_symbol_hook) (const char *);
 735 extern void (*deprecated_post_add_symbol_hook) (void);
 736 extern void (*selected_frame_level_changed_hook) (int);
 737 extern int (*deprecated_ui_loop_hook) (int signo);
 738 extern void (*deprecated_init_ui_hook) (char *argv0);
 739 extern void (*deprecated_command_loop_hook) (void);
 740 extern void (*deprecated_show_load_progress) (const char *section,
 741                                               unsigned long section_sent,
 742                                               unsigned long section_size,
 743                                               unsigned long total_sent,
 744                                               unsigned long total_size);
 745 extern void (*deprecated_print_frame_info_listing_hook) (struct symtab * s,
 746                                                          int line,
 747                                                          int stopline,
 748                                                          int noerror);
 749 extern int (*deprecated_query_hook) (const char *, va_list)
 750      ATTRIBUTE_FPTR_PRINTF(1,0);
 751 extern void (*deprecated_warning_hook) (const char *, va_list)
 752      ATTRIBUTE_FPTR_PRINTF(1,0);
 753 extern void (*deprecated_flush_hook) (struct ui_file * stream);
 754 extern void (*deprecated_interactive_hook) (void);
 755 extern void (*deprecated_readline_begin_hook) (char *, ...)
 756      ATTRIBUTE_FPTR_PRINTF_1;
 757 extern char *(*deprecated_readline_hook) (char *);
 758 extern void (*deprecated_readline_end_hook) (void);
 759 extern void (*deprecated_register_changed_hook) (int regno);
 760 extern void (*deprecated_context_hook) (int);
 761 extern ptid_t (*deprecated_target_wait_hook) (ptid_t ptid,
 762                                               struct target_waitstatus *status,
 763                                               int options);
 764
 765 extern void (*deprecated_attach_hook) (void);
 766 extern void (*deprecated_detach_hook) (void);
 767 extern void (*deprecated_call_command_hook) (struct cmd_list_element * c,
 768                                              char *cmd, int from_tty);
 769
 770 extern void (*deprecated_set_hook) (struct cmd_list_element * c);
 771
 772 extern int (*deprecated_ui_load_progress_hook) (const char *section,
 773                                                 unsigned long num);
 774
 775 /* Inhibit window interface if non-zero.  */
 776
 777 extern int use_windows;
 778
 779 /* Provide default definitions of PIDGET, TIDGET, and MERGEPID.
 780    The name ``TIDGET'' is a historical accident.  Many uses of TIDGET
 781    in the code actually refer to a lightweight process id, i.e,
 782    something that can be considered a process id in its own right for
 783    certain purposes.  */
 784
 785 #ifndef PIDGET
 786 #define PIDGET(PTID) (ptid_get_pid (PTID))
 787 #define TIDGET(PTID) (ptid_get_lwp (PTID))
 788 #define MERGEPID(PID, TID) ptid_build (PID, TID, 0)
 789 #endif
 790
 791 /* Define well known filenos if the system does not define them.  */
 792 #ifndef STDIN_FILENO
 793 #define STDIN_FILENO   0
 794 #endif
 795 #ifndef STDOUT_FILENO
 796 #define STDOUT_FILENO  1
 797 #endif
 798 #ifndef STDERR_FILENO
 799 #define STDERR_FILENO  2
 800 #endif
 801
 802 /* If this definition isn't overridden by the header files, assume
 803    that isatty and fileno exist on this system.  */
 804 #ifndef ISATTY
 805 #define ISATTY(FP)      (isatty (fileno (FP)))
 806 #endif
 807
 808 /* A width that can achieve a better legibility for GDB MI mode.  */
 809 #define GDB_MI_MSG_WIDTH  80
 810
 811 /* From progspace.c */
 812
 813 extern void initialize_progspace (void);
 814 extern void initialize_inferiors (void);
 815
 816 /* Special block numbers */
 817
 818 enum block_enum
 819 {
 820   GLOBAL_BLOCK = 0,
 821   STATIC_BLOCK = 1,
 822   FIRST_LOCAL_BLOCK = 2
 823 };
 824
 825 #include "utils.h"
 826
 827 #endif /* #ifndef DEFS_H */