gdb/defs.h

   1 /* *INDENT-OFF* */ /* ATTR_FORMAT confuses indent, avoid running it for now */
   2 /* Basic, host-specific, and target-specific definitions for GDB.
   3    Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
   4    1997, 1998, 1999, 2000, 2001
   5    Free Software Foundation, 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 2 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, write to the Free Software
  21    Foundation, Inc., 59 Temple Place - Suite 330,
  22    Boston, MA 02111-1307, USA.  */
  23
  24 #ifndef DEFS_H
  25 #define DEFS_H
  26
  27 #include "config.h"             /* Generated by configure */
  28 #include <stdio.h>
  29 #include <errno.h>              /* System call error return status */
  30 #include <limits.h>
  31
  32 #ifdef HAVE_STDDEF_H
  33 #include <stddef.h>
  34 #else
  35 #include <sys/types.h>          /* for size_t */
  36 #endif
  37
  38 #ifdef HAVE_UNISTD_H
  39 #include <unistd.h>
  40 #endif
  41
  42 /* Just in case they're not defined in stdio.h. */
  43
  44 #ifndef SEEK_SET
  45 #define SEEK_SET 0
  46 #endif
  47 #ifndef SEEK_CUR
  48 #define SEEK_CUR 1
  49 #endif
  50
  51 /* First include ansidecl.h so we can use the various macro definitions
  52    here and in all subsequent file inclusions.  */
  53
  54 #include "ansidecl.h"
  55
  56 #include <stdarg.h>             /* for va_list */
  57
  58 #include "libiberty.h"
  59
  60 #include "progress.h"
  61
  62 #ifdef USE_MMALLOC
  63 #include "mmalloc.h"
  64 #endif
  65
  66 /* For BFD64 and bfd_vma.  */
  67 #include "bfd.h"
  68
  69
  70 /* The target is partially multi-arched.  Both "tm.h" and the
  71    multi-arch vector provide definitions.  "tm.h" normally overrides
  72    the multi-arch vector (but there are a few exceptions).  */
  73
  74 #define GDB_MULTI_ARCH_PARTIAL 1
  75
  76 /* The target is multi-arched.  The MULTI-ARCH vector provides all
  77    definitions.  "tm.h" is included and may provide definitions of
  78    non- multi-arch macros..  */
  79
  80 #define GDB_MULTI_ARCH_TM 2
  81
  82 /* The target is pure multi-arch.  The MULTI-ARCH vector provides all
  83    definitions.  "tm.h" is linked to an empty file. */
  84
  85 #define GDB_MULTI_ARCH_PURE 3
  86
  87
  88
  89 /* An address in the program being debugged.  Host byte order.  Rather
  90    than duplicate all the logic in BFD which figures out what type
  91    this is (long, long long, etc.) and whether it needs to be 64
  92    bits (the host/target interactions are subtle), we just use
  93    bfd_vma.  */
  94
  95 typedef bfd_vma CORE_ADDR;
  96
  97 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
  98
  99 #ifndef LONGEST
 100
 101 #ifdef BFD64
 102
 103 #define LONGEST BFD_HOST_64_BIT
 104 #define ULONGEST BFD_HOST_U_64_BIT
 105
 106 #else /* No BFD64 */
 107
 108 #ifdef CC_HAS_LONG_LONG
 109 #define LONGEST long long
 110 #define ULONGEST unsigned long long
 111 #else
 112 #ifdef BFD_HOST_64_BIT
 113 /* BFD_HOST_64_BIT is defined for some hosts that don't have long long
 114    (e.g. i386-windows) so try it.  */
 115 #define LONGEST BFD_HOST_64_BIT
 116 #define ULONGEST BFD_HOST_U_64_BIT
 117 #else
 118 #define LONGEST long
 119 #define ULONGEST unsigned long
 120 #endif
 121 #endif
 122
 123 #endif /* No BFD64 */
 124
 125 #endif /* ! LONGEST */
 126
 127 #ifndef min
 128 #define min(a, b) ((a) < (b) ? (a) : (b))
 129 #endif
 130 #ifndef max
 131 #define max(a, b) ((a) > (b) ? (a) : (b))
 132 #endif
 133
 134 /* Macros to do string compares.
 135
 136    NOTE: cagney/2000-03-14:
 137
 138    While old code can continue to refer to these macros, new code is
 139    probably better off using strcmp() directly vis: ``strcmp() == 0''
 140    and ``strcmp() != 0''.
 141
 142    This is because modern compilers can directly inline strcmp()
 143    making the original justification for these macros - avoid function
 144    call overhead by pre-testing the first characters
 145    (``*X==*Y?...:0'') - redundant.
 146
 147    ``Even if [...] testing the first character does have a modest
 148    performance improvement, I'd rather that whenever a performance
 149    issue is found that we spend the effort on algorithmic
 150    optimizations than micro-optimizing.'' J.T. */
 151
 152 #define STREQ(a,b) (*(a) == *(b) ? !strcmp ((a), (b)) : 0)
 153 #define STREQN(a,b,c) (*(a) == *(b) ? !strncmp ((a), (b), (c)) : 0)
 154
 155 /* The character GNU C++ uses to build identifiers that must be unique from
 156    the program's identifiers (such as $this and $$vptr).  */
 157 #define CPLUS_MARKER '$'        /* May be overridden to '.' for SysV */
 158
 159 /* Check if a character is one of the commonly used C++ marker characters.  */
 160 extern int is_cplus_marker (int);
 161
 162 /* use tui interface if non-zero */
 163 extern int tui_version;
 164
 165 #if defined(TUI)
 166 /* all invocations of TUIDO should have two sets of parens */
 167 #define TUIDO(x)        tuiDo x
 168 #else
 169 #define TUIDO(x)
 170 #endif
 171
 172 /* enable xdb commands if set */
 173 extern int xdb_commands;
 174
 175 /* enable dbx commands if set */
 176 extern int dbx_commands;
 177
 178 extern int quit_flag;
 179 extern int immediate_quit;
 180 extern int sevenbit_strings;
 181
 182 extern void quit (void);
 183
 184 /* FIXME: cagney/2000-03-13: It has been suggested that the peformance
 185    benefits of having a ``QUIT'' macro rather than a function are
 186    marginal.  If the overhead of a QUIT function call is proving
 187    significant then its calling frequency should probably be reduced
 188    [kingdon].  A profile analyzing the current situtation is
 189    needed. */
 190
 191 #ifdef QUIT
 192 /* do twice to force compiler warning */
 193 #define QUIT_FIXME "FIXME"
 194 #define QUIT_FIXME "ignoring redefinition of QUIT"
 195 #else
 196 #define QUIT { \
 197   if (quit_flag) quit (); \
 198   if (interactive_hook) interactive_hook (); \
 199   PROGRESS (1); \
 200 }
 201 #endif
 202
 203 /* Languages represented in the symbol table and elsewhere.
 204    This should probably be in language.h, but since enum's can't
 205    be forward declared to satisfy opaque references before their
 206    actual definition, needs to be here. */
 207
 208 enum language
 209   {
 210     language_unknown,           /* Language not known */
 211     language_auto,              /* Placeholder for automatic setting */
 212     language_c,                 /* C */
 213     language_cplus,             /* C++ */
 214     language_java,              /* Java */
 215     language_chill,             /* Chill */
 216     language_fortran,           /* Fortran */
 217     language_m2,                /* Modula-2 */
 218     language_asm,               /* Assembly language */
 219     language_scm,               /* Scheme / Guile */
 220     language_pascal             /* Pascal */
 221   };
 222
 223 enum precision_type
 224   {
 225     single_precision,
 226     double_precision,
 227     unspecified_precision
 228   };
 229
 230 /* The numbering of these signals is chosen to match traditional unix
 231    signals (insofar as various unices use the same numbers, anyway).
 232    It is also the numbering of the GDB remote protocol.  Other remote
 233    protocols, if they use a different numbering, should make sure to
 234    translate appropriately.
 235
 236    Since these numbers have actually made it out into other software
 237    (stubs, etc.), you mustn't disturb the assigned numbering.  If you
 238    need to add new signals here, add them to the end of the explicitly
 239    numbered signals.
 240
 241    This is based strongly on Unix/POSIX signals for several reasons:
 242    (1) This set of signals represents a widely-accepted attempt to
 243    represent events of this sort in a portable fashion, (2) we want a
 244    signal to make it from wait to child_wait to the user intact, (3) many
 245    remote protocols use a similar encoding.  However, it is
 246    recognized that this set of signals has limitations (such as not
 247    distinguishing between various kinds of SIGSEGV, or not
 248    distinguishing hitting a breakpoint from finishing a single step).
 249    So in the future we may get around this either by adding additional
 250    signals for breakpoint, single-step, etc., or by adding signal
 251    codes; the latter seems more in the spirit of what BSD, System V,
 252    etc. are doing to address these issues.  */
 253
 254 /* For an explanation of what each signal means, see
 255    target_signal_to_string.  */
 256
 257 enum target_signal
 258   {
 259     /* Used some places (e.g. stop_signal) to record the concept that
 260        there is no signal.  */
 261     TARGET_SIGNAL_0 = 0,
 262     TARGET_SIGNAL_FIRST = 0,
 263     TARGET_SIGNAL_HUP = 1,
 264     TARGET_SIGNAL_INT = 2,
 265     TARGET_SIGNAL_QUIT = 3,
 266     TARGET_SIGNAL_ILL = 4,
 267     TARGET_SIGNAL_TRAP = 5,
 268     TARGET_SIGNAL_ABRT = 6,
 269     TARGET_SIGNAL_EMT = 7,
 270     TARGET_SIGNAL_FPE = 8,
 271     TARGET_SIGNAL_KILL = 9,
 272     TARGET_SIGNAL_BUS = 10,
 273     TARGET_SIGNAL_SEGV = 11,
 274     TARGET_SIGNAL_SYS = 12,
 275     TARGET_SIGNAL_PIPE = 13,
 276     TARGET_SIGNAL_ALRM = 14,
 277     TARGET_SIGNAL_TERM = 15,
 278     TARGET_SIGNAL_URG = 16,
 279     TARGET_SIGNAL_STOP = 17,
 280     TARGET_SIGNAL_TSTP = 18,
 281     TARGET_SIGNAL_CONT = 19,
 282     TARGET_SIGNAL_CHLD = 20,
 283     TARGET_SIGNAL_TTIN = 21,
 284     TARGET_SIGNAL_TTOU = 22,
 285     TARGET_SIGNAL_IO = 23,
 286     TARGET_SIGNAL_XCPU = 24,
 287     TARGET_SIGNAL_XFSZ = 25,
 288     TARGET_SIGNAL_VTALRM = 26,
 289     TARGET_SIGNAL_PROF = 27,
 290     TARGET_SIGNAL_WINCH = 28,
 291     TARGET_SIGNAL_LOST = 29,
 292     TARGET_SIGNAL_USR1 = 30,
 293     TARGET_SIGNAL_USR2 = 31,
 294     TARGET_SIGNAL_PWR = 32,
 295     /* Similar to SIGIO.  Perhaps they should have the same number.  */
 296     TARGET_SIGNAL_POLL = 33,
 297     TARGET_SIGNAL_WIND = 34,
 298     TARGET_SIGNAL_PHONE = 35,
 299     TARGET_SIGNAL_WAITING = 36,
 300     TARGET_SIGNAL_LWP = 37,
 301     TARGET_SIGNAL_DANGER = 38,
 302     TARGET_SIGNAL_GRANT = 39,
 303     TARGET_SIGNAL_RETRACT = 40,
 304     TARGET_SIGNAL_MSG = 41,
 305     TARGET_SIGNAL_SOUND = 42,
 306     TARGET_SIGNAL_SAK = 43,
 307     TARGET_SIGNAL_PRIO = 44,
 308     TARGET_SIGNAL_REALTIME_33 = 45,
 309     TARGET_SIGNAL_REALTIME_34 = 46,
 310     TARGET_SIGNAL_REALTIME_35 = 47,
 311     TARGET_SIGNAL_REALTIME_36 = 48,
 312     TARGET_SIGNAL_REALTIME_37 = 49,
 313     TARGET_SIGNAL_REALTIME_38 = 50,
 314     TARGET_SIGNAL_REALTIME_39 = 51,
 315     TARGET_SIGNAL_REALTIME_40 = 52,
 316     TARGET_SIGNAL_REALTIME_41 = 53,
 317     TARGET_SIGNAL_REALTIME_42 = 54,
 318     TARGET_SIGNAL_REALTIME_43 = 55,
 319     TARGET_SIGNAL_REALTIME_44 = 56,
 320     TARGET_SIGNAL_REALTIME_45 = 57,
 321     TARGET_SIGNAL_REALTIME_46 = 58,
 322     TARGET_SIGNAL_REALTIME_47 = 59,
 323     TARGET_SIGNAL_REALTIME_48 = 60,
 324     TARGET_SIGNAL_REALTIME_49 = 61,
 325     TARGET_SIGNAL_REALTIME_50 = 62,
 326     TARGET_SIGNAL_REALTIME_51 = 63,
 327     TARGET_SIGNAL_REALTIME_52 = 64,
 328     TARGET_SIGNAL_REALTIME_53 = 65,
 329     TARGET_SIGNAL_REALTIME_54 = 66,
 330     TARGET_SIGNAL_REALTIME_55 = 67,
 331     TARGET_SIGNAL_REALTIME_56 = 68,
 332     TARGET_SIGNAL_REALTIME_57 = 69,
 333     TARGET_SIGNAL_REALTIME_58 = 70,
 334     TARGET_SIGNAL_REALTIME_59 = 71,
 335     TARGET_SIGNAL_REALTIME_60 = 72,
 336     TARGET_SIGNAL_REALTIME_61 = 73,
 337     TARGET_SIGNAL_REALTIME_62 = 74,
 338     TARGET_SIGNAL_REALTIME_63 = 75,
 339
 340     /* Used internally by Solaris threads.  See signal(5) on Solaris.  */
 341     TARGET_SIGNAL_CANCEL = 76,
 342
 343     /* Yes, this pains me, too.  But LynxOS didn't have SIG32, and now
 344        Linux does, and we can't disturb the numbering, since it's part
 345        of the protocol.  Note that in some GDB's TARGET_SIGNAL_REALTIME_32
 346        is number 76.  */
 347     TARGET_SIGNAL_REALTIME_32,
 348     /* Yet another pain, IRIX 6 has SIG64.  */
 349     TARGET_SIGNAL_REALTIME_64,
 350
 351 #if defined(MACH) || defined(__MACH__)
 352     /* Mach exceptions */
 353     TARGET_EXC_BAD_ACCESS,
 354     TARGET_EXC_BAD_INSTRUCTION,
 355     TARGET_EXC_ARITHMETIC,
 356     TARGET_EXC_EMULATION,
 357     TARGET_EXC_SOFTWARE,
 358     TARGET_EXC_BREAKPOINT,
 359 #endif
 360     TARGET_SIGNAL_INFO,
 361
 362     /* Some signal we don't know about.  */
 363     TARGET_SIGNAL_UNKNOWN,
 364
 365     /* Use whatever signal we use when one is not specifically specified
 366        (for passing to proceed and so on).  */
 367     TARGET_SIGNAL_DEFAULT,
 368
 369     /* Last and unused enum value, for sizing arrays, etc.  */
 370     TARGET_SIGNAL_LAST
 371   };
 372
 373 /* the cleanup list records things that have to be undone
 374    if an error happens (descriptors to be closed, memory to be freed, etc.)
 375    Each link in the chain records a function to call and an
 376    argument to give it.
 377
 378    Use make_cleanup to add an element to the cleanup chain.
 379    Use do_cleanups to do all cleanup actions back to a given
 380    point in the chain.  Use discard_cleanups to remove cleanups
 381    from the chain back to a given point, not doing them.  */
 382
 383 struct cleanup
 384   {
 385     struct cleanup *next;
 386     void (*function) (PTR);
 387     PTR arg;
 388   };
 389
 390
 391 /* The ability to declare that a function never returns is useful, but
 392    not really required to compile GDB successfully, so the NORETURN and
 393    ATTR_NORETURN macros normally expand into nothing.  */
 394
 395 /* If compiling with older versions of GCC, a function may be declared
 396    "volatile" to indicate that it does not return.  */
 397
 398 #ifndef NORETURN
 399 #if defined(__GNUC__) \
 400      && (__GNUC__ == 1 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7))
 401 #define NORETURN volatile
 402 #else
 403 #define NORETURN                /* nothing */
 404 #endif
 405 #endif
 406
 407 /* GCC 2.5 and later versions define a function attribute "noreturn",
 408    which is the preferred way to declare that a function never returns.
 409    However GCC 2.7 appears to be the first version in which this fully
 410    works everywhere we use it. */
 411
 412 #ifndef ATTR_NORETURN
 413 #if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7))
 414 #define ATTR_NORETURN __attribute__ ((noreturn))
 415 #else
 416 #define ATTR_NORETURN           /* nothing */
 417 #endif
 418 #endif
 419
 420 #ifndef ATTR_FORMAT
 421 #if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 4))
 422 #define ATTR_FORMAT(type, x, y) __attribute__ ((format(type, x, y)))
 423 #else
 424 #define ATTR_FORMAT(type, x, y) /* nothing */
 425 #endif
 426 #endif
 427
 428 /* Needed for various prototypes */
 429
 430 struct symtab;
 431 struct breakpoint;
 432
 433 /* From blockframe.c */
 434
 435 extern int inside_entry_func (CORE_ADDR);
 436
 437 extern int inside_entry_file (CORE_ADDR addr);
 438
 439 extern int inside_main_func (CORE_ADDR pc);
 440
 441 /* From ch-lang.c, for the moment. (FIXME) */
 442
 443 extern char *chill_demangle (const char *);
 444
 445 /* From utils.c */
 446
 447 extern void initialize_utils (void);
 448
 449 extern void notice_quit (void);
 450
 451 extern int strcmp_iw (const char *, const char *);
 452
 453 extern int subset_compare (char *, char *);
 454
 455 extern char *safe_strerror (int);
 456
 457 extern void init_malloc (void *);
 458
 459 extern void request_quit (int);
 460
 461 extern void do_cleanups (struct cleanup *);
 462 extern void do_final_cleanups (struct cleanup *);
 463 extern void do_my_cleanups (struct cleanup **, struct cleanup *);
 464 extern void do_run_cleanups (struct cleanup *);
 465 extern void do_exec_cleanups (struct cleanup *);
 466 extern void do_exec_error_cleanups (struct cleanup *);
 467
 468 extern void discard_cleanups (struct cleanup *);
 469 extern void discard_final_cleanups (struct cleanup *);
 470 extern void discard_exec_error_cleanups (struct cleanup *);
 471 extern void discard_my_cleanups (struct cleanup **, struct cleanup *);
 472
 473 /* NOTE: cagney/2000-03-04: This typedef is strictly for the
 474    make_cleanup function declarations below. Do not use this typedef
 475    as a cast when passing functions into the make_cleanup() code.
 476    Instead either use a bounce function or add a wrapper function.
 477    Calling a f(char*) function with f(void*) is non-portable. */
 478 typedef void (make_cleanup_ftype) (void *);
 479
 480 extern struct cleanup *make_cleanup (make_cleanup_ftype *, void *);
 481
 482 extern struct cleanup *make_cleanup_freeargv (char **);
 483
 484 struct ui_file;
 485 extern struct cleanup *make_cleanup_ui_file_delete (struct ui_file *);
 486
 487 extern struct cleanup *make_cleanup_close (int fd);
 488
 489 extern struct cleanup *make_cleanup_bfd_close (bfd *abfd);
 490
 491 extern struct cleanup *make_final_cleanup (make_cleanup_ftype *, void *);
 492
 493 extern struct cleanup *make_my_cleanup (struct cleanup **,
 494                                         make_cleanup_ftype *, void *);
 495
 496 extern struct cleanup *make_run_cleanup (make_cleanup_ftype *, void *);
 497
 498 extern struct cleanup *make_exec_cleanup (make_cleanup_ftype *, void *);
 499 extern struct cleanup *make_exec_error_cleanup (make_cleanup_ftype *, void *);
 500
 501 extern struct cleanup *save_cleanups (void);
 502 extern struct cleanup *save_final_cleanups (void);
 503 extern struct cleanup *save_my_cleanups (struct cleanup **);
 504
 505 extern void restore_cleanups (struct cleanup *);
 506 extern void restore_final_cleanups (struct cleanup *);
 507 extern void restore_my_cleanups (struct cleanup **, struct cleanup *);
 508
 509 extern void free_current_contents (void *);
 510
 511 extern void null_cleanup (void *);
 512
 513 extern int myread (int, char *, int);
 514
 515 extern int query (char *, ...) ATTR_FORMAT (printf, 1, 2);
 516
 517 extern void init_page_info (void);
 518
 519 extern CORE_ADDR host_pointer_to_address (void *ptr);
 520 extern void *address_to_host_pointer (CORE_ADDR addr);
 521
 522 /* From demangle.c */
 523
 524 extern void set_demangling_style (char *);
 525
 526 /* From tm.h */
 527
 528 struct type;
 529 typedef int (use_struct_convention_fn) (int gcc_p, struct type * value_type);
 530 extern use_struct_convention_fn generic_use_struct_convention;
 531
 532 typedef unsigned char *(breakpoint_from_pc_fn) (CORE_ADDR * pcptr, int *lenptr);
 533 \f
 534 /* Annotation stuff.  */
 535
 536 extern int annotation_level;    /* in stack.c */
 537 \f
 538 extern void begin_line (void);
 539
 540 extern void wrap_here (char *);
 541
 542 extern void reinitialize_more_filter (void);
 543
 544 /* Normal results */
 545 extern struct ui_file *gdb_stdout;
 546 /* Serious error notifications */
 547 extern struct ui_file *gdb_stderr;
 548 /* Log/debug/trace messages that should bypass normal stdout/stderr
 549    filtering.  For momement, always call this stream using
 550    *_unfiltered. In the very near future that restriction shall be
 551    removed - either call shall be unfiltered. (cagney 1999-06-13). */
 552 extern struct ui_file *gdb_stdlog;
 553 /* Target output that should bypass normal stdout/stderr filtering.
 554    For momement, always call this stream using *_unfiltered. In the
 555    very near future that restriction shall be removed - either call
 556    shall be unfiltered. (cagney 1999-07-02). */
 557 extern struct ui_file *gdb_stdtarg;
 558
 559 #if defined(TUI)
 560 #include "tui.h"
 561 #include "tuiCommand.h"
 562 #include "tuiData.h"
 563 #include "tuiIO.h"
 564 #include "tuiLayout.h"
 565 #include "tuiWin.h"
 566 #endif
 567
 568 #include "ui-file.h"
 569
 570 /* More generic printf like operations.  Filtered versions may return
 571    non-locally on error.  */
 572
 573 extern void fputs_filtered (const char *, struct ui_file *);
 574
 575 extern void fputs_unfiltered (const char *, struct ui_file *);
 576
 577 extern int fputc_filtered (int c, struct ui_file *);
 578
 579 extern int fputc_unfiltered (int c, struct ui_file *);
 580
 581 extern int putchar_filtered (int c);
 582
 583 extern int putchar_unfiltered (int c);
 584
 585 extern void puts_filtered (const char *);
 586
 587 extern void puts_unfiltered (const char *);
 588
 589 extern void puts_debug (char *prefix, char *string, char *suffix);
 590
 591 extern void vprintf_filtered (const char *, va_list) ATTR_FORMAT (printf, 1, 0);
 592
 593 extern void vfprintf_filtered (struct ui_file *, const char *, va_list) ATTR_FORMAT (printf, 2, 0);
 594
 595 extern void fprintf_filtered (struct ui_file *, const char *, ...) ATTR_FORMAT (printf, 2, 3);
 596
 597 extern void fprintfi_filtered (int, struct ui_file *, const char *, ...) ATTR_FORMAT (printf, 3, 4);
 598
 599 extern void printf_filtered (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 600
 601 extern void printfi_filtered (int, const char *, ...) ATTR_FORMAT (printf, 2, 3);
 602
 603 extern void vprintf_unfiltered (const char *, va_list) ATTR_FORMAT (printf, 1, 0);
 604
 605 extern void vfprintf_unfiltered (struct ui_file *, const char *, va_list) ATTR_FORMAT (printf, 2, 0);
 606
 607 extern void fprintf_unfiltered (struct ui_file *, const char *, ...) ATTR_FORMAT (printf, 2, 3);
 608
 609 extern void printf_unfiltered (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 610
 611 extern void print_spaces (int, struct ui_file *);
 612
 613 extern void print_spaces_filtered (int, struct ui_file *);
 614
 615 extern char *n_spaces (int);
 616
 617 extern void fputstr_filtered (const char *str, int quotr, struct ui_file * stream);
 618
 619 extern void fputstr_unfiltered (const char *str, int quotr, struct ui_file * stream);
 620
 621 extern void fputstrn_unfiltered (const char *str, int n, int quotr, struct ui_file * stream);
 622
 623 /* Display the host ADDR on STREAM formatted as ``0x%x''. */
 624 extern void gdb_print_host_address (void *addr, struct ui_file *stream);
 625
 626 /* Convert a CORE_ADDR into a HEX string.  paddr() is like %08lx.
 627    paddr_nz() is like %lx.  paddr_u() is like %lu. paddr_width() is
 628    for ``%*''. */
 629 extern int strlen_paddr (void);
 630 extern char *paddr (CORE_ADDR addr);
 631 extern char *paddr_nz (CORE_ADDR addr);
 632 extern char *paddr_u (CORE_ADDR addr);
 633 extern char *paddr_d (LONGEST addr);
 634
 635 extern char *phex (ULONGEST l, int sizeof_l);
 636 extern char *phex_nz (ULONGEST l, int sizeof_l);
 637
 638 extern void fprintf_symbol_filtered (struct ui_file *, char *,
 639                                      enum language, int);
 640
 641 extern NORETURN void perror_with_name (char *) ATTR_NORETURN;
 642
 643 extern void print_sys_errmsg (char *, int);
 644
 645 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 646    "const char *" in unistd.h, so we can't declare the argument
 647    as "char *".  */
 648
 649 extern char *re_comp (const char *);
 650
 651 /* From symfile.c */
 652
 653 extern void symbol_file_command (char *, int);
 654
 655 /* Remote targets may wish to use this as their load function.  */
 656 extern void generic_load (char *name, int from_tty);
 657
 658 /* Summarise a download */
 659 extern void print_transfer_performance (struct ui_file *stream,
 660                                         unsigned long data_count,
 661                                         unsigned long write_count,
 662                                         unsigned long time_count);
 663
 664 /* From top.c */
 665
 666 typedef void initialize_file_ftype (void);
 667
 668 extern char *skip_quoted (char *);
 669
 670 extern char *gdb_readline (char *);
 671
 672 extern char *command_line_input (char *, int, char *);
 673
 674 extern void print_prompt (void);
 675
 676 extern int input_from_terminal_p (void);
 677
 678 extern int info_verbose;
 679
 680 /* From printcmd.c */
 681
 682 extern void set_next_address (CORE_ADDR);
 683
 684 extern void print_address_symbolic (CORE_ADDR, struct ui_file *, int,
 685                                     char *);
 686
 687 extern int build_address_symbolic (CORE_ADDR addr,
 688                                    int do_demangle,
 689                                    char **name,
 690                                    int *offset,
 691                                    char **filename,
 692                                    int *line,
 693                                    int *unmapped);
 694
 695 extern void print_address_numeric (CORE_ADDR, int, struct ui_file *);
 696
 697 extern void print_address (CORE_ADDR, struct ui_file *);
 698
 699 /* From source.c */
 700
 701 extern int openp (char *, int, char *, int, int, char **);
 702
 703 extern int source_full_path_of (char *, char **);
 704
 705 extern void mod_path (char *, char **);
 706
 707 extern void directory_command (char *, int);
 708
 709 extern void init_source_path (void);
 710
 711 extern char *symtab_to_filename (struct symtab *);
 712
 713 /* From exec.c */
 714
 715 extern void exec_set_section_offsets (bfd_signed_vma text_off,
 716                                       bfd_signed_vma data_off,
 717                                       bfd_signed_vma bss_off);
 718
 719 /* From findvar.c */
 720
 721 extern int read_relative_register_raw_bytes (int, char *);
 722
 723 /* Possible lvalue types.  Like enum language, this should be in
 724    value.h, but needs to be here for the same reason. */
 725
 726 enum lval_type
 727   {
 728     /* Not an lval. */
 729     not_lval,
 730     /* In memory.  Could be a saved register.  */
 731     lval_memory,
 732     /* In a register.  */
 733     lval_register,
 734     /* In a gdb internal variable.  */
 735     lval_internalvar,
 736     /* Part of a gdb internal variable (structure field).  */
 737     lval_internalvar_component,
 738     /* In a register series in a frame not the current one, which may have been
 739        partially saved or saved in different places (otherwise would be
 740        lval_register or lval_memory).  */
 741     lval_reg_frame_relative
 742   };
 743
 744 struct frame_info;
 745
 746 /* From readline (but not in any readline .h files).  */
 747
 748 extern char *tilde_expand (char *);
 749
 750 /* Control types for commands */
 751
 752 enum misc_command_type
 753   {
 754     ok_command,
 755     end_command,
 756     else_command,
 757     nop_command
 758   };
 759
 760 enum command_control_type
 761   {
 762     simple_control,
 763     break_control,
 764     continue_control,
 765     while_control,
 766     if_control,
 767     invalid_control
 768   };
 769
 770 /* Structure for saved commands lines
 771    (for breakpoints, defined commands, etc).  */
 772
 773 struct command_line
 774   {
 775     struct command_line *next;
 776     char *line;
 777     enum command_control_type control_type;
 778     int body_count;
 779     struct command_line **body_list;
 780   };
 781
 782 extern struct command_line *read_command_lines (char *, int);
 783
 784 extern void free_command_lines (struct command_line **);
 785
 786 /* To continue the execution commands when running gdb asynchronously.
 787    A continuation structure contains a pointer to a function to be called
 788    to finish the command, once the target has stopped. Such mechanism is
 789    used bt the finish and until commands, and in the remote protocol
 790    when opening an extended-remote connection. */
 791
 792 struct continuation_arg
 793   {
 794     struct continuation_arg *next;
 795     union continuation_data {
 796       void *pointer;
 797       int   integer;
 798       long  longint;
 799     } data;
 800   };
 801
 802 struct continuation
 803   {
 804     void (*continuation_hook) (struct continuation_arg *);
 805     struct continuation_arg *arg_list;
 806     struct continuation *next;
 807   };
 808
 809 /* In infrun.c. */
 810 extern struct continuation *cmd_continuation;
 811 /* Used only by the step_1 function. */
 812 extern struct continuation *intermediate_continuation;
 813
 814 /* From utils.c */
 815 extern void add_continuation (void (*)(struct continuation_arg *),
 816                               struct continuation_arg *);
 817 extern void do_all_continuations (void);
 818 extern void discard_all_continuations (void);
 819
 820 extern void add_intermediate_continuation (void (*)(struct continuation_arg *),
 821                               struct continuation_arg *);
 822 extern void do_all_intermediate_continuations (void);
 823 extern void discard_all_intermediate_continuations (void);
 824
 825 /* String containing the current directory (what getwd would return).  */
 826
 827 extern char *current_directory;
 828
 829 /* Default radixes for input and output.  Only some values supported.  */
 830 extern unsigned input_radix;
 831 extern unsigned output_radix;
 832
 833 /* Possibilities for prettyprint parameters to routines which print
 834    things.  Like enum language, this should be in value.h, but needs
 835    to be here for the same reason.  FIXME:  If we can eliminate this
 836    as an arg to LA_VAL_PRINT, then we can probably move it back to
 837    value.h. */
 838
 839 enum val_prettyprint
 840   {
 841     Val_no_prettyprint = 0,
 842     Val_prettyprint,
 843     /* Use the default setting which the user has specified.  */
 844     Val_pretty_default
 845   };
 846
 847 /* The ptid struct is a collection of the various "ids" necessary
 848    for identifying the inferior.  This consists of the process id
 849    (pid), thread id (tid), and other fields necessary for uniquely
 850    identifying the inferior process/thread being debugged.  When
 851    manipulating ptids, the constructors, accessors, and predicate
 852    declared in inferior.h should be used.  These are as follows:
 853
 854       ptid_build        - Make a new ptid from a pid, lwp, and tid.
 855       pid_to_ptid       - Make a new ptid from just a pid.
 856       ptid_get_pid      - Fetch the pid component of a ptid.
 857       ptid_get_lwp      - Fetch the lwp component of a ptid.
 858       ptid_get_tid      - Fetch the tid component of a ptid.
 859       ptid_equal        - Test to see if two ptids are equal.
 860
 861    Please do NOT access the struct ptid members directly (except, of
 862    course, in the implementation of the above ptid manipulation
 863    functions).  */
 864
 865 struct ptid
 866   {
 867     /* Process id */
 868     int pid;
 869
 870     /* Lightweight process id */
 871     long lwp;
 872
 873     /* Thread id */
 874     long tid;
 875   };
 876
 877 typedef struct ptid ptid_t;
 878
 879 \f
 880
 881 /* Optional host machine definition.  Pure autoconf targets will not
 882    need a "xm.h" file.  This will be a symlink to one of the xm-*.h
 883    files, built by the `configure' script.  */
 884
 885 #ifdef GDB_XM_FILE
 886 #include "xm.h"
 887 #endif
 888
 889 /* Optional native machine support.  Non-native (and possibly pure
 890    multi-arch) targets do not need a "nm.h" file.  This will be a
 891    symlink to one of the nm-*.h files, built by the `configure'
 892    script.  */
 893
 894 #ifdef GDB_NM_FILE
 895 #include "nm.h"
 896 #endif
 897
 898 /* Optional target machine definition.  Pure multi-arch configurations
 899    do not need a "tm.h" file.  This will be a symlink to one of the
 900    tm-*.h files, built by the `configure' script.  */
 901
 902 #ifdef GDB_TM_FILE
 903 #include "tm.h"
 904 #endif
 905
 906 /* GDB_MULTI_ARCH is normally set by configure.in using information
 907    from configure.tgt or the config/%/%.mt Makefile fragment.  Since
 908    some targets have defined it in their "tm.h" file, delay providing
 909    a default definition until after "tm.h" has been included.. */
 910
 911 #ifndef GDB_MULTI_ARCH
 912 #define GDB_MULTI_ARCH 0
 913 #endif
 914
 915
 916 /* If the xm.h file did not define the mode string used to open the
 917    files, assume that binary files are opened the same way as text
 918    files */
 919 #ifndef FOPEN_RB
 920 #include "fopen-same.h"
 921 #endif
 922
 923 /* Microsoft C can't deal with const pointers */
 924
 925 #ifdef _MSC_VER
 926 #define CONST_PTR
 927 #else
 928 #define CONST_PTR const
 929 #endif
 930
 931 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 932    FIXME: Assumes 2's complement arithmetic */
 933
 934 #if !defined (UINT_MAX)
 935 #define UINT_MAX ((unsigned int)(~0))   /* 0xFFFFFFFF for 32-bits */
 936 #endif
 937
 938 #if !defined (INT_MAX)
 939 #define INT_MAX ((int)(UINT_MAX >> 1))  /* 0x7FFFFFFF for 32-bits */
 940 #endif
 941
 942 #if !defined (INT_MIN)
 943 #define INT_MIN ((int)((int) ~0 ^ INT_MAX))     /* 0x80000000 for 32-bits */
 944 #endif
 945
 946 #if !defined (ULONG_MAX)
 947 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 948 #endif
 949
 950 #if !defined (LONG_MAX)
 951 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 952 #endif
 953
 954 #if !defined (ULONGEST_MAX)
 955 #define ULONGEST_MAX (~(ULONGEST)0)        /* 0xFFFFFFFFFFFFFFFF for 64-bits */
 956 #endif
 957
 958 #if !defined (LONGEST_MAX)                 /* 0x7FFFFFFFFFFFFFFF for 64-bits */
 959 #define LONGEST_MAX ((LONGEST)(ULONGEST_MAX >> 1))
 960 #endif
 961
 962 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 963    arguments to a function, number in a value history, register number, etc.)
 964    where the value must not be larger than can fit in an int.  */
 965
 966 extern int longest_to_int (LONGEST);
 967
 968 /* Assorted functions we can declare, now that const and volatile are
 969    defined.  */
 970
 971 extern char *savestring (const char *, size_t);
 972
 973 extern char *msavestring (void *, const char *, size_t);
 974
 975 extern char *mstrsave (void *, const char *);
 976
 977 #if !defined (USE_MMALLOC)
 978 /* NOTE: cagney/2000-03-04: The mmalloc functions need to use PTR
 979    rather than void* so that they are consistent with the delcaration
 980    in ../mmalloc/mmalloc.h. */
 981 extern PTR mcalloc (PTR, size_t, size_t);
 982 extern PTR mmalloc (PTR, size_t);
 983 extern PTR mrealloc (PTR, PTR, size_t);
 984 extern void mfree (PTR, PTR);
 985 #endif
 986
 987 /* Robust versions of same.  Throw an internal error when no memory,
 988    guard against stray NULL arguments. */
 989 extern void *xmmalloc (void *md, size_t size);
 990 extern void *xmrealloc (void *md, void *ptr, size_t size);
 991 extern void *xmcalloc (void *md, size_t number, size_t size);
 992 extern void xmfree (void *md, void *ptr);
 993
 994 /* xmalloc(), xrealloc() and xcalloc() have already been declared in
 995    "libiberty.h". */
 996 extern void xfree (void *);
 997
 998 /* Like asprintf/vasprintf but get an internal_error if the call
 999    fails. */
1000 extern void xasprintf (char **ret, const char *format, ...) ATTR_FORMAT (printf, 2, 3);
1001 extern void xvasprintf (char **ret, const char *format, va_list ap);
1002
1003 extern int parse_escape (char **);
1004
1005 /* Message to be printed before the error message, when an error occurs.  */
1006
1007 extern char *error_pre_print;
1008
1009 /* Message to be printed before the error message, when an error occurs.  */
1010
1011 extern char *quit_pre_print;
1012
1013 /* Message to be printed before the warning message, when a warning occurs.  */
1014
1015 extern char *warning_pre_print;
1016
1017 extern NORETURN void verror (const char *fmt, va_list ap) ATTR_NORETURN;
1018
1019 extern NORETURN void error (const char *fmt, ...) ATTR_NORETURN;
1020
1021 /* DEPRECATED: Use error(), verror() or error_stream(). */
1022 extern NORETURN void error_begin (void);
1023
1024 extern NORETURN void error_stream (struct ui_file *) ATTR_NORETURN;
1025
1026 /* Returns a freshly allocate buffer containing the last error
1027    message.  */
1028 extern char *error_last_message (void);
1029
1030 extern NORETURN void internal_verror (const char *file, int line,
1031                                       const char *, va_list ap) ATTR_NORETURN;
1032
1033 extern NORETURN void internal_error (const char *file, int line,
1034                                      const char *, ...) ATTR_NORETURN ATTR_FORMAT (printf, 3, 4);
1035
1036 extern NORETURN void nomem (long) ATTR_NORETURN;
1037
1038 /* Reasons for calling return_to_top_level.  Note: enum value 0 is
1039    reserved for internal use as the return value from an initial
1040    setjmp().  */
1041
1042 enum return_reason
1043   {
1044     /* User interrupt.  */
1045     RETURN_QUIT = 1,
1046     /* Any other error.  */
1047     RETURN_ERROR
1048   };
1049
1050 #define ALL_CLEANUPS    ((struct cleanup *)0)
1051
1052 #define RETURN_MASK(reason)     (1 << (int)(reason))
1053 #define RETURN_MASK_QUIT        RETURN_MASK (RETURN_QUIT)
1054 #define RETURN_MASK_ERROR       RETURN_MASK (RETURN_ERROR)
1055 #define RETURN_MASK_ALL         (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
1056 typedef int return_mask;
1057
1058 extern NORETURN void return_to_top_level (enum return_reason) ATTR_NORETURN;
1059
1060 /* If CATCH_ERRORS_FTYPE throws an error, catch_errors() returns zero
1061    otherwize the result from CATCH_ERRORS_FTYPE is returned. It is
1062    probably useful for CATCH_ERRORS_FTYPE to always return a non-zero
1063    value. It's unfortunate that, catch_errors() does not return an
1064    indication of the exact exception that it caught - quit_flag might
1065    help. */
1066
1067 typedef int (catch_errors_ftype) (PTR);
1068 extern int catch_errors (catch_errors_ftype *, PTR, char *, return_mask);
1069
1070 /* Template to catch_errors() that wraps calls to command
1071    functions. */
1072
1073 typedef void (catch_command_errors_ftype) (char *, int);
1074 extern int catch_command_errors (catch_command_errors_ftype *func, char *command, int from_tty, return_mask);
1075
1076 extern void warning_begin (void);
1077
1078 extern void warning (const char *, ...) ATTR_FORMAT (printf, 1, 2);
1079
1080 /* Global functions from other, non-gdb GNU thingies.
1081    Libiberty thingies are no longer declared here.  We include libiberty.h
1082    above, instead.  */
1083
1084 #ifndef GETENV_PROVIDED
1085 extern char *getenv (const char *);
1086 #endif
1087
1088 /* From other system libraries */
1089
1090 #ifdef HAVE_STDDEF_H
1091 #include <stddef.h>
1092 #endif
1093
1094 #ifdef HAVE_STDLIB_H
1095 #if defined(_MSC_VER) && !defined(__cplusplus)
1096 /* msvc defines these in stdlib.h for c code */
1097 #undef min
1098 #undef max
1099 #endif
1100 #include <stdlib.h>
1101 #endif
1102 #ifndef min
1103 #define min(a, b) ((a) < (b) ? (a) : (b))
1104 #endif
1105 #ifndef max
1106 #define max(a, b) ((a) > (b) ? (a) : (b))
1107 #endif
1108
1109
1110 /* We take the address of fclose later, but some stdio's forget
1111    to declare this.  We can't always declare it since there's
1112    no way to declare the parameters without upsetting some compiler
1113    somewhere. */
1114
1115 #ifndef FCLOSE_PROVIDED
1116 extern int fclose (FILE *);
1117 #endif
1118
1119 #ifndef atof
1120 extern double atof (const char *);      /* X3.159-1989  4.10.1.1 */
1121 #endif
1122
1123 /* Various possibilities for alloca.  */
1124 #ifndef alloca
1125 #ifdef __GNUC__
1126 #define alloca __builtin_alloca
1127 #else /* Not GNU C */
1128 #ifdef HAVE_ALLOCA_H
1129 #include <alloca.h>
1130 #else
1131 #ifdef _AIX
1132 #pragma alloca
1133 #else
1134
1135 /* We need to be careful not to declare this in a way which conflicts with
1136    bison.  Bison never declares it as char *, but under various circumstances
1137    (like __hpux) we need to use void *.  */
1138 extern void *alloca ();
1139 #endif /* Not _AIX */
1140 #endif /* Not HAVE_ALLOCA_H */
1141 #endif /* Not GNU C */
1142 #endif /* alloca not defined */
1143
1144 /* HOST_BYTE_ORDER must be defined to one of these.  */
1145
1146 #ifdef HAVE_ENDIAN_H
1147 #include <endian.h>
1148 #endif
1149
1150 #if !defined (BIG_ENDIAN)
1151 #define BIG_ENDIAN 4321
1152 #endif
1153
1154 #if !defined (LITTLE_ENDIAN)
1155 #define LITTLE_ENDIAN 1234
1156 #endif
1157
1158 /* Dynamic target-system-dependent parameters for GDB. */
1159 #include "gdbarch.h"
1160 #if (GDB_MULTI_ARCH == 0)
1161 /* Multi-arch targets _should_ be including "arch-utils.h" directly
1162    into their *-tdep.c file.  This is a prop to help old non-
1163    multi-arch targets to continue to compile. */
1164 #include "arch-utils.h"
1165 #endif
1166
1167 /* Static target-system-dependent parameters for GDB. */
1168
1169 /* Number of bits in a char or unsigned char for the target machine.
1170    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
1171 #if !defined (TARGET_CHAR_BIT)
1172 #define TARGET_CHAR_BIT 8
1173 #endif
1174
1175 /* If we picked up a copy of CHAR_BIT from a configuration file
1176    (which may get it by including <limits.h>) then use it to set
1177    the number of bits in a host char.  If not, use the same size
1178    as the target. */
1179
1180 #if defined (CHAR_BIT)
1181 #define HOST_CHAR_BIT CHAR_BIT
1182 #else
1183 #define HOST_CHAR_BIT TARGET_CHAR_BIT
1184 #endif
1185
1186 /* The bit byte-order has to do just with numbering of bits in
1187    debugging symbols and such.  Conceptually, it's quite separate
1188    from byte/word byte order.  */
1189
1190 #if !defined (BITS_BIG_ENDIAN)
1191 #define BITS_BIG_ENDIAN (TARGET_BYTE_ORDER == BIG_ENDIAN)
1192 #endif
1193
1194 /* In findvar.c.  */
1195
1196 extern LONGEST extract_signed_integer (void *, int);
1197
1198 extern ULONGEST extract_unsigned_integer (void *, int);
1199
1200 extern int extract_long_unsigned_integer (void *, int, LONGEST *);
1201
1202 extern CORE_ADDR extract_address (void *, int);
1203
1204 extern CORE_ADDR extract_typed_address (void *buf, struct type *type);
1205
1206 extern void store_signed_integer (void *, int, LONGEST);
1207
1208 extern void store_unsigned_integer (void *, int, ULONGEST);
1209
1210 extern void store_address (void *, int, LONGEST);
1211
1212 extern void store_typed_address (void *buf, struct type *type, CORE_ADDR addr);
1213
1214 /* Setup definitions for host and target floating point formats.  We need to
1215    consider the format for `float', `double', and `long double' for both target
1216    and host.  We need to do this so that we know what kind of conversions need
1217    to be done when converting target numbers to and from the hosts DOUBLEST
1218    data type.  */
1219
1220 /* This is used to indicate that we don't know the format of the floating point
1221    number.  Typically, this is useful for native ports, where the actual format
1222    is irrelevant, since no conversions will be taking place.  */
1223
1224 extern const struct floatformat floatformat_unknown;
1225
1226 #if HOST_BYTE_ORDER == BIG_ENDIAN
1227 #ifndef HOST_FLOAT_FORMAT
1228 #define HOST_FLOAT_FORMAT &floatformat_ieee_single_big
1229 #endif
1230 #ifndef HOST_DOUBLE_FORMAT
1231 #define HOST_DOUBLE_FORMAT &floatformat_ieee_double_big
1232 #endif
1233 #else /* LITTLE_ENDIAN */
1234 #ifndef HOST_FLOAT_FORMAT
1235 #define HOST_FLOAT_FORMAT &floatformat_ieee_single_little
1236 #endif
1237 #ifndef HOST_DOUBLE_FORMAT
1238 #define HOST_DOUBLE_FORMAT &floatformat_ieee_double_little
1239 #endif
1240 #endif
1241
1242 #ifndef HOST_LONG_DOUBLE_FORMAT
1243 #define HOST_LONG_DOUBLE_FORMAT &floatformat_unknown
1244 #endif
1245
1246 /* Use `long double' if the host compiler supports it.  (Note that this is not
1247    necessarily any longer than `double'.  On SunOS/gcc, it's the same as
1248    double.)  This is necessary because GDB internally converts all floating
1249    point values to the widest type supported by the host.
1250
1251    There are problems however, when the target `long double' is longer than the
1252    host's `long double'.  In general, we'll probably reduce the precision of
1253    any such values and print a warning.  */
1254
1255 #ifdef HAVE_LONG_DOUBLE
1256 typedef long double DOUBLEST;
1257 #else
1258 typedef double DOUBLEST;
1259 #endif
1260
1261 extern void floatformat_to_doublest (const struct floatformat *,
1262                                      char *, DOUBLEST *);
1263 extern void floatformat_from_doublest (const struct floatformat *,
1264                                        DOUBLEST *, char *);
1265
1266 extern int floatformat_is_negative (const struct floatformat *, char *);
1267 extern int floatformat_is_nan (const struct floatformat *, char *);
1268 extern char *floatformat_mantissa (const struct floatformat *, char *);
1269
1270 extern DOUBLEST extract_floating (void *, int);
1271 extern void store_floating (void *, int, DOUBLEST);
1272 \f
1273 /* On some machines there are bits in addresses which are not really
1274    part of the address, but are used by the kernel, the hardware, etc.
1275    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
1276    so we get a "real" address such as one would find in a symbol
1277    table.  This is used only for addresses of instructions, and even then
1278    I'm not sure it's used in all contexts.  It exists to deal with there
1279    being a few stray bits in the PC which would mislead us, not as some sort
1280    of generic thing to handle alignment or segmentation (it's possible it
1281    should be in TARGET_READ_PC instead). */
1282 #if !defined (ADDR_BITS_REMOVE)
1283 #define ADDR_BITS_REMOVE(addr) (addr)
1284 #endif /* No ADDR_BITS_REMOVE.  */
1285
1286 /* From valops.c */
1287
1288 extern CORE_ADDR push_bytes (CORE_ADDR, char *, int);
1289
1290 extern CORE_ADDR push_word (CORE_ADDR, ULONGEST);
1291
1292 extern int watchdog;
1293
1294 /* Hooks for alternate command interfaces.  */
1295
1296 #ifdef UI_OUT
1297 /* The name of the interpreter if specified on the command line. */
1298 extern char *interpreter_p;
1299 #endif
1300
1301 /* If a given interpreter matches INTERPRETER_P then it should update
1302    command_loop_hook and init_ui_hook with the per-interpreter
1303    implementation. */
1304 /* FIXME: command_loop_hook and init_ui_hook should be moved here. */
1305
1306 struct target_waitstatus;
1307 struct cmd_list_element;
1308
1309 /* Should the asynchronous variant of the interpreter (using the
1310    event-loop) be enabled? */
1311 extern int event_loop_p;
1312
1313 extern void (*init_ui_hook) (char *argv0);
1314 extern void (*command_loop_hook) (void);
1315 extern void (*show_load_progress) (const char *section,
1316                                    unsigned long section_sent,
1317                                    unsigned long section_size,
1318                                    unsigned long total_sent,
1319                                    unsigned long total_size);
1320 extern void (*print_frame_info_listing_hook) (struct symtab * s,
1321                                               int line, int stopline,
1322                                               int noerror);
1323 extern struct frame_info *parse_frame_specification (char *frame_exp);
1324 extern int (*query_hook) (const char *, va_list);
1325 extern void (*warning_hook) (const char *, va_list);
1326 extern void (*flush_hook) (struct ui_file * stream);
1327 extern void (*create_breakpoint_hook) (struct breakpoint * b);
1328 extern void (*delete_breakpoint_hook) (struct breakpoint * bpt);
1329 extern void (*modify_breakpoint_hook) (struct breakpoint * bpt);
1330 extern void (*interactive_hook) (void);
1331 extern void (*registers_changed_hook) (void);
1332 extern void (*readline_begin_hook) (char *,...);
1333 extern char *(*readline_hook) (char *);
1334 extern void (*readline_end_hook) (void);
1335 extern void (*register_changed_hook) (int regno);
1336 extern void (*memory_changed_hook) (CORE_ADDR addr, int len);
1337 extern void (*context_hook) (int);
1338 extern ptid_t (*target_wait_hook) (ptid_t ptid,
1339                                          struct target_waitstatus * status);
1340
1341 extern void (*attach_hook) (void);
1342 extern void (*detach_hook) (void);
1343 extern void (*call_command_hook) (struct cmd_list_element * c,
1344                                   char *cmd, int from_tty);
1345
1346 extern void (*set_hook) (struct cmd_list_element * c);
1347
1348 extern NORETURN void (*error_hook) (void) ATTR_NORETURN;
1349
1350 extern void (*error_begin_hook) (void);
1351
1352 extern int (*ui_load_progress_hook) (const char *section, unsigned long num);
1353
1354
1355 /* Inhibit window interface if non-zero. */
1356
1357 extern int use_windows;
1358
1359 /* Symbolic definitions of filename-related things.  */
1360 /* FIXME, this doesn't work very well if host and executable
1361    filesystems conventions are different.  */
1362
1363 #ifndef DIRNAME_SEPARATOR
1364 #define DIRNAME_SEPARATOR ':'
1365 #endif
1366
1367 #ifndef SLASH_STRING
1368 #ifdef _WIN32
1369 #define SLASH_STRING "\\"
1370 #else
1371 #define SLASH_STRING "/"
1372 #endif
1373 #endif
1374
1375 /* Provide default definitions of PIDGET, TIDGET, and MERGEPID.
1376    The name ``TIDGET'' is a historical accident.  Many uses of TIDGET
1377    in the code actually refer to a lightweight process id, i.e,
1378    something that can be considered a process id in its own right for
1379    certain purposes.  */
1380
1381 #ifndef PIDGET
1382 #define PIDGET(PTID) (ptid_get_pid (PTID))
1383 #define TIDGET(PTID) (ptid_get_lwp (PTID))
1384 #define MERGEPID(PID, TID) ptid_build (PID, TID, 0)
1385 #endif
1386
1387 /* Define well known filenos if the system does not define them.  */
1388 #ifndef STDIN_FILENO
1389 #define STDIN_FILENO   0
1390 #endif
1391 #ifndef STDOUT_FILENO
1392 #define STDOUT_FILENO  1
1393 #endif
1394 #ifndef STDERR_FILENO
1395 #define STDERR_FILENO  2
1396 #endif
1397
1398 /* If this definition isn't overridden by the header files, assume
1399    that isatty and fileno exist on this system.  */
1400 #ifndef ISATTY
1401 #define ISATTY(FP)      (isatty (fileno (FP)))
1402 #endif
1403
1404 \f
1405 /* FIXME: cagney/1999-12-13: The following will be moved to gdb.h /
1406    libgdb.h or gdblib.h. */
1407
1408 /* Return-code (RC) from a gdb library call.  (The abreviation RC is
1409    taken from the sim/common directory.) */
1410
1411 enum gdb_rc {
1412   /* The operation failed.  The failure message can be fetched by
1413      calling ``char *error_last_message(void)''. The value is
1414      determined by the catch_errors() interface. */
1415   /* NOTE: Since ``defs.h:catch_errors()'' does not return an error /
1416      internal / quit indication it is not possible to return that
1417      here. */
1418   GDB_RC_FAIL = 0,
1419   /* No error occured but nothing happened. Due to the catch_errors()
1420      interface, this must be non-zero. */
1421   GDB_RC_NONE = 1,
1422   /* The operation was successful. Due to the catch_errors()
1423      interface, this must be non-zero. */
1424   GDB_RC_OK = 2
1425 };
1426
1427
1428 /* Print the specified breakpoint on GDB_STDOUT. (Eventually this
1429    function will ``print'' the object on ``output''). */
1430 enum gdb_rc gdb_breakpoint_query (/* struct {ui,gdb}_out *output, */ int bnum);
1431
1432 /* Create a breakpoint at ADDRESS (a GDB source and line). */
1433 enum gdb_rc gdb_breakpoint (char *address, char *condition,
1434                             int hardwareflag, int tempflag,
1435                             int thread, int ignore_count);
1436 enum gdb_rc gdb_thread_select (/* output object */ char *tidstr);
1437
1438 #ifdef UI_OUT
1439 /* Print a list of known thread ids. */
1440 enum gdb_rc gdb_list_thread_ids (/* output object */);
1441
1442 /* Switch thread and print notification. */
1443 #endif
1444 #endif /* #ifndef DEFS_H */