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 partially multi-arched. Both the multi-arch vector
  77    and "tm.h" provide definitions. "tm.h" cannot override a definition
  78    provided by the multi-arch vector.  It is detected as a compilation
  79    error.
  80
  81    This setting is only useful during a multi-arch conversion. */
  82
  83 #define GDB_MULTI_ARCH_TM 2
  84
  85 /* The target is pure multi-arch.  The MULTI-ARCH vector provides all
  86    definitions.  "tm.h" is linked to an empty file. */
  87
  88 #define GDB_MULTI_ARCH_PURE 3
  89
  90
  91
  92 /* An address in the program being debugged.  Host byte order.  Rather
  93    than duplicate all the logic in BFD which figures out what type
  94    this is (long, long long, etc.) and whether it needs to be 64
  95    bits (the host/target interactions are subtle), we just use
  96    bfd_vma.  */
  97
  98 typedef bfd_vma CORE_ADDR;
  99
 100 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
 101
 102 #ifndef LONGEST
 103
 104 #ifdef BFD64
 105
 106 #define LONGEST BFD_HOST_64_BIT
 107 #define ULONGEST BFD_HOST_U_64_BIT
 108
 109 #else /* No BFD64 */
 110
 111 #ifdef CC_HAS_LONG_LONG
 112 #define LONGEST long long
 113 #define ULONGEST unsigned long long
 114 #else
 115 #ifdef BFD_HOST_64_BIT
 116 /* BFD_HOST_64_BIT is defined for some hosts that don't have long long
 117    (e.g. i386-windows) so try it.  */
 118 #define LONGEST BFD_HOST_64_BIT
 119 #define ULONGEST BFD_HOST_U_64_BIT
 120 #else
 121 #define LONGEST long
 122 #define ULONGEST unsigned long
 123 #endif
 124 #endif
 125
 126 #endif /* No BFD64 */
 127
 128 #endif /* ! LONGEST */
 129
 130 #ifndef min
 131 #define min(a, b) ((a) < (b) ? (a) : (b))
 132 #endif
 133 #ifndef max
 134 #define max(a, b) ((a) > (b) ? (a) : (b))
 135 #endif
 136
 137 /* Macros to do string compares.
 138
 139    NOTE: cagney/2000-03-14:
 140
 141    While old code can continue to refer to these macros, new code is
 142    probably better off using strcmp() directly vis: ``strcmp() == 0''
 143    and ``strcmp() != 0''.
 144
 145    This is because modern compilers can directly inline strcmp()
 146    making the original justification for these macros - avoid function
 147    call overhead by pre-testing the first characters
 148    (``*X==*Y?...:0'') - redundant.
 149
 150    ``Even if [...] testing the first character does have a modest
 151    performance improvement, I'd rather that whenever a performance
 152    issue is found that we spend the effort on algorithmic
 153    optimizations than micro-optimizing.'' J.T. */
 154
 155 #define STREQ(a,b) (*(a) == *(b) ? !strcmp ((a), (b)) : 0)
 156 #define STREQN(a,b,c) (*(a) == *(b) ? !strncmp ((a), (b), (c)) : 0)
 157
 158 /* The character GNU C++ uses to build identifiers that must be unique from
 159    the program's identifiers (such as $this and $$vptr).  */
 160 #define CPLUS_MARKER '$'        /* May be overridden to '.' for SysV */
 161
 162 /* Check if a character is one of the commonly used C++ marker characters.  */
 163 extern int is_cplus_marker (int);
 164
 165 /* use tui interface if non-zero */
 166 extern int tui_version;
 167
 168 #if defined(TUI)
 169 /* all invocations of TUIDO should have two sets of parens */
 170 #define TUIDO(x)        tuiDo x
 171 #else
 172 #define TUIDO(x)
 173 #endif
 174
 175 /* enable xdb commands if set */
 176 extern int xdb_commands;
 177
 178 /* enable dbx commands if set */
 179 extern int dbx_commands;
 180
 181 extern int quit_flag;
 182 extern int immediate_quit;
 183 extern int sevenbit_strings;
 184
 185 extern void quit (void);
 186
 187 /* FIXME: cagney/2000-03-13: It has been suggested that the peformance
 188    benefits of having a ``QUIT'' macro rather than a function are
 189    marginal.  If the overhead of a QUIT function call is proving
 190    significant then its calling frequency should probably be reduced
 191    [kingdon].  A profile analyzing the current situtation is
 192    needed. */
 193
 194 #ifdef QUIT
 195 /* do twice to force compiler warning */
 196 #define QUIT_FIXME "FIXME"
 197 #define QUIT_FIXME "ignoring redefinition of QUIT"
 198 #else
 199 #define QUIT { \
 200   if (quit_flag) quit (); \
 201   if (interactive_hook) interactive_hook (); \
 202   PROGRESS (1); \
 203 }
 204 #endif
 205
 206 /* Languages represented in the symbol table and elsewhere.
 207    This should probably be in language.h, but since enum's can't
 208    be forward declared to satisfy opaque references before their
 209    actual definition, needs to be here. */
 210
 211 enum language
 212   {
 213     language_unknown,           /* Language not known */
 214     language_auto,              /* Placeholder for automatic setting */
 215     language_c,                 /* C */
 216     language_cplus,             /* C++ */
 217     language_java,              /* Java */
 218     language_chill,             /* Chill */
 219     language_fortran,           /* Fortran */
 220     language_m2,                /* Modula-2 */
 221     language_asm,               /* Assembly language */
 222     language_scm,               /* Scheme / Guile */
 223     language_pascal             /* Pascal */
 224   };
 225
 226 enum precision_type
 227   {
 228     single_precision,
 229     double_precision,
 230     unspecified_precision
 231   };
 232
 233 /* The numbering of these signals is chosen to match traditional unix
 234    signals (insofar as various unices use the same numbers, anyway).
 235    It is also the numbering of the GDB remote protocol.  Other remote
 236    protocols, if they use a different numbering, should make sure to
 237    translate appropriately.
 238
 239    Since these numbers have actually made it out into other software
 240    (stubs, etc.), you mustn't disturb the assigned numbering.  If you
 241    need to add new signals here, add them to the end of the explicitly
 242    numbered signals.
 243
 244    This is based strongly on Unix/POSIX signals for several reasons:
 245    (1) This set of signals represents a widely-accepted attempt to
 246    represent events of this sort in a portable fashion, (2) we want a
 247    signal to make it from wait to child_wait to the user intact, (3) many
 248    remote protocols use a similar encoding.  However, it is
 249    recognized that this set of signals has limitations (such as not
 250    distinguishing between various kinds of SIGSEGV, or not
 251    distinguishing hitting a breakpoint from finishing a single step).
 252    So in the future we may get around this either by adding additional
 253    signals for breakpoint, single-step, etc., or by adding signal
 254    codes; the latter seems more in the spirit of what BSD, System V,
 255    etc. are doing to address these issues.  */
 256
 257 /* For an explanation of what each signal means, see
 258    target_signal_to_string.  */
 259
 260 enum target_signal
 261   {
 262     /* Used some places (e.g. stop_signal) to record the concept that
 263        there is no signal.  */
 264     TARGET_SIGNAL_0 = 0,
 265     TARGET_SIGNAL_FIRST = 0,
 266     TARGET_SIGNAL_HUP = 1,
 267     TARGET_SIGNAL_INT = 2,
 268     TARGET_SIGNAL_QUIT = 3,
 269     TARGET_SIGNAL_ILL = 4,
 270     TARGET_SIGNAL_TRAP = 5,
 271     TARGET_SIGNAL_ABRT = 6,
 272     TARGET_SIGNAL_EMT = 7,
 273     TARGET_SIGNAL_FPE = 8,
 274     TARGET_SIGNAL_KILL = 9,
 275     TARGET_SIGNAL_BUS = 10,
 276     TARGET_SIGNAL_SEGV = 11,
 277     TARGET_SIGNAL_SYS = 12,
 278     TARGET_SIGNAL_PIPE = 13,
 279     TARGET_SIGNAL_ALRM = 14,
 280     TARGET_SIGNAL_TERM = 15,
 281     TARGET_SIGNAL_URG = 16,
 282     TARGET_SIGNAL_STOP = 17,
 283     TARGET_SIGNAL_TSTP = 18,
 284     TARGET_SIGNAL_CONT = 19,
 285     TARGET_SIGNAL_CHLD = 20,
 286     TARGET_SIGNAL_TTIN = 21,
 287     TARGET_SIGNAL_TTOU = 22,
 288     TARGET_SIGNAL_IO = 23,
 289     TARGET_SIGNAL_XCPU = 24,
 290     TARGET_SIGNAL_XFSZ = 25,
 291     TARGET_SIGNAL_VTALRM = 26,
 292     TARGET_SIGNAL_PROF = 27,
 293     TARGET_SIGNAL_WINCH = 28,
 294     TARGET_SIGNAL_LOST = 29,
 295     TARGET_SIGNAL_USR1 = 30,
 296     TARGET_SIGNAL_USR2 = 31,
 297     TARGET_SIGNAL_PWR = 32,
 298     /* Similar to SIGIO.  Perhaps they should have the same number.  */
 299     TARGET_SIGNAL_POLL = 33,
 300     TARGET_SIGNAL_WIND = 34,
 301     TARGET_SIGNAL_PHONE = 35,
 302     TARGET_SIGNAL_WAITING = 36,
 303     TARGET_SIGNAL_LWP = 37,
 304     TARGET_SIGNAL_DANGER = 38,
 305     TARGET_SIGNAL_GRANT = 39,
 306     TARGET_SIGNAL_RETRACT = 40,
 307     TARGET_SIGNAL_MSG = 41,
 308     TARGET_SIGNAL_SOUND = 42,
 309     TARGET_SIGNAL_SAK = 43,
 310     TARGET_SIGNAL_PRIO = 44,
 311     TARGET_SIGNAL_REALTIME_33 = 45,
 312     TARGET_SIGNAL_REALTIME_34 = 46,
 313     TARGET_SIGNAL_REALTIME_35 = 47,
 314     TARGET_SIGNAL_REALTIME_36 = 48,
 315     TARGET_SIGNAL_REALTIME_37 = 49,
 316     TARGET_SIGNAL_REALTIME_38 = 50,
 317     TARGET_SIGNAL_REALTIME_39 = 51,
 318     TARGET_SIGNAL_REALTIME_40 = 52,
 319     TARGET_SIGNAL_REALTIME_41 = 53,
 320     TARGET_SIGNAL_REALTIME_42 = 54,
 321     TARGET_SIGNAL_REALTIME_43 = 55,
 322     TARGET_SIGNAL_REALTIME_44 = 56,
 323     TARGET_SIGNAL_REALTIME_45 = 57,
 324     TARGET_SIGNAL_REALTIME_46 = 58,
 325     TARGET_SIGNAL_REALTIME_47 = 59,
 326     TARGET_SIGNAL_REALTIME_48 = 60,
 327     TARGET_SIGNAL_REALTIME_49 = 61,
 328     TARGET_SIGNAL_REALTIME_50 = 62,
 329     TARGET_SIGNAL_REALTIME_51 = 63,
 330     TARGET_SIGNAL_REALTIME_52 = 64,
 331     TARGET_SIGNAL_REALTIME_53 = 65,
 332     TARGET_SIGNAL_REALTIME_54 = 66,
 333     TARGET_SIGNAL_REALTIME_55 = 67,
 334     TARGET_SIGNAL_REALTIME_56 = 68,
 335     TARGET_SIGNAL_REALTIME_57 = 69,
 336     TARGET_SIGNAL_REALTIME_58 = 70,
 337     TARGET_SIGNAL_REALTIME_59 = 71,
 338     TARGET_SIGNAL_REALTIME_60 = 72,
 339     TARGET_SIGNAL_REALTIME_61 = 73,
 340     TARGET_SIGNAL_REALTIME_62 = 74,
 341     TARGET_SIGNAL_REALTIME_63 = 75,
 342
 343     /* Used internally by Solaris threads.  See signal(5) on Solaris.  */
 344     TARGET_SIGNAL_CANCEL = 76,
 345
 346     /* Yes, this pains me, too.  But LynxOS didn't have SIG32, and now
 347        Linux does, and we can't disturb the numbering, since it's part
 348        of the remote protocol.  Note that in some GDB's
 349        TARGET_SIGNAL_REALTIME_32 is number 76.  */
 350     TARGET_SIGNAL_REALTIME_32,
 351     /* Yet another pain, IRIX 6 has SIG64. */
 352     TARGET_SIGNAL_REALTIME_64,
 353     /* Yet another pain, Linux/MIPS might go up to 128. */
 354     TARGET_SIGNAL_REALTIME_65,
 355     TARGET_SIGNAL_REALTIME_66,
 356     TARGET_SIGNAL_REALTIME_67,
 357     TARGET_SIGNAL_REALTIME_68,
 358     TARGET_SIGNAL_REALTIME_69,
 359     TARGET_SIGNAL_REALTIME_70,
 360     TARGET_SIGNAL_REALTIME_71,
 361     TARGET_SIGNAL_REALTIME_72,
 362     TARGET_SIGNAL_REALTIME_73,
 363     TARGET_SIGNAL_REALTIME_74,
 364     TARGET_SIGNAL_REALTIME_75,
 365     TARGET_SIGNAL_REALTIME_76,
 366     TARGET_SIGNAL_REALTIME_77,
 367     TARGET_SIGNAL_REALTIME_78,
 368     TARGET_SIGNAL_REALTIME_79,
 369     TARGET_SIGNAL_REALTIME_80,
 370     TARGET_SIGNAL_REALTIME_81,
 371     TARGET_SIGNAL_REALTIME_82,
 372     TARGET_SIGNAL_REALTIME_83,
 373     TARGET_SIGNAL_REALTIME_84,
 374     TARGET_SIGNAL_REALTIME_85,
 375     TARGET_SIGNAL_REALTIME_86,
 376     TARGET_SIGNAL_REALTIME_87,
 377     TARGET_SIGNAL_REALTIME_88,
 378     TARGET_SIGNAL_REALTIME_89,
 379     TARGET_SIGNAL_REALTIME_90,
 380     TARGET_SIGNAL_REALTIME_91,
 381     TARGET_SIGNAL_REALTIME_92,
 382     TARGET_SIGNAL_REALTIME_93,
 383     TARGET_SIGNAL_REALTIME_94,
 384     TARGET_SIGNAL_REALTIME_95,
 385     TARGET_SIGNAL_REALTIME_96,
 386     TARGET_SIGNAL_REALTIME_97,
 387     TARGET_SIGNAL_REALTIME_98,
 388     TARGET_SIGNAL_REALTIME_99,
 389     TARGET_SIGNAL_REALTIME_100,
 390     TARGET_SIGNAL_REALTIME_101,
 391     TARGET_SIGNAL_REALTIME_102,
 392     TARGET_SIGNAL_REALTIME_103,
 393     TARGET_SIGNAL_REALTIME_104,
 394     TARGET_SIGNAL_REALTIME_105,
 395     TARGET_SIGNAL_REALTIME_106,
 396     TARGET_SIGNAL_REALTIME_107,
 397     TARGET_SIGNAL_REALTIME_108,
 398     TARGET_SIGNAL_REALTIME_109,
 399     TARGET_SIGNAL_REALTIME_110,
 400     TARGET_SIGNAL_REALTIME_111,
 401     TARGET_SIGNAL_REALTIME_112,
 402     TARGET_SIGNAL_REALTIME_113,
 403     TARGET_SIGNAL_REALTIME_114,
 404     TARGET_SIGNAL_REALTIME_115,
 405     TARGET_SIGNAL_REALTIME_116,
 406     TARGET_SIGNAL_REALTIME_117,
 407     TARGET_SIGNAL_REALTIME_118,
 408     TARGET_SIGNAL_REALTIME_119,
 409     TARGET_SIGNAL_REALTIME_120,
 410     TARGET_SIGNAL_REALTIME_121,
 411     TARGET_SIGNAL_REALTIME_122,
 412     TARGET_SIGNAL_REALTIME_123,
 413     TARGET_SIGNAL_REALTIME_124,
 414     TARGET_SIGNAL_REALTIME_125,
 415     TARGET_SIGNAL_REALTIME_126,
 416     TARGET_SIGNAL_REALTIME_127,
 417
 418 #if defined(MACH) || defined(__MACH__)
 419     /* Mach exceptions */
 420     TARGET_EXC_BAD_ACCESS,
 421     TARGET_EXC_BAD_INSTRUCTION,
 422     TARGET_EXC_ARITHMETIC,
 423     TARGET_EXC_EMULATION,
 424     TARGET_EXC_SOFTWARE,
 425     TARGET_EXC_BREAKPOINT,
 426 #endif
 427     TARGET_SIGNAL_INFO,
 428
 429     /* Some signal we don't know about.  */
 430     TARGET_SIGNAL_UNKNOWN,
 431
 432     /* Use whatever signal we use when one is not specifically specified
 433        (for passing to proceed and so on).  */
 434     TARGET_SIGNAL_DEFAULT,
 435
 436     /* Last and unused enum value, for sizing arrays, etc.  */
 437     TARGET_SIGNAL_LAST
 438   };
 439
 440 /* the cleanup list records things that have to be undone
 441    if an error happens (descriptors to be closed, memory to be freed, etc.)
 442    Each link in the chain records a function to call and an
 443    argument to give it.
 444
 445    Use make_cleanup to add an element to the cleanup chain.
 446    Use do_cleanups to do all cleanup actions back to a given
 447    point in the chain.  Use discard_cleanups to remove cleanups
 448    from the chain back to a given point, not doing them.  */
 449
 450 struct cleanup
 451   {
 452     struct cleanup *next;
 453     void (*function) (PTR);
 454     PTR arg;
 455   };
 456
 457
 458 /* The ability to declare that a function never returns is useful, but
 459    not really required to compile GDB successfully, so the NORETURN and
 460    ATTR_NORETURN macros normally expand into nothing.  */
 461
 462 /* If compiling with older versions of GCC, a function may be declared
 463    "volatile" to indicate that it does not return.  */
 464
 465 #ifndef NORETURN
 466 #if defined(__GNUC__) \
 467      && (__GNUC__ == 1 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7))
 468 #define NORETURN volatile
 469 #else
 470 #define NORETURN                /* nothing */
 471 #endif
 472 #endif
 473
 474 /* GCC 2.5 and later versions define a function attribute "noreturn",
 475    which is the preferred way to declare that a function never returns.
 476    However GCC 2.7 appears to be the first version in which this fully
 477    works everywhere we use it. */
 478
 479 #ifndef ATTR_NORETURN
 480 #if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7))
 481 #define ATTR_NORETURN __attribute__ ((noreturn))
 482 #else
 483 #define ATTR_NORETURN           /* nothing */
 484 #endif
 485 #endif
 486
 487 #ifndef ATTR_FORMAT
 488 #if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 4))
 489 #define ATTR_FORMAT(type, x, y) __attribute__ ((format(type, x, y)))
 490 #else
 491 #define ATTR_FORMAT(type, x, y) /* nothing */
 492 #endif
 493 #endif
 494
 495 /* Needed for various prototypes */
 496
 497 struct symtab;
 498 struct breakpoint;
 499
 500 /* From blockframe.c */
 501
 502 extern int inside_entry_func (CORE_ADDR);
 503
 504 extern int inside_entry_file (CORE_ADDR addr);
 505
 506 extern int inside_main_func (CORE_ADDR pc);
 507
 508 /* From ch-lang.c, for the moment. (FIXME) */
 509
 510 extern char *chill_demangle (const char *);
 511
 512 /* From utils.c */
 513
 514 extern void initialize_utils (void);
 515
 516 extern void notice_quit (void);
 517
 518 extern int strcmp_iw (const char *, const char *);
 519
 520 extern int subset_compare (char *, char *);
 521
 522 extern char *safe_strerror (int);
 523
 524 extern void init_malloc (void *);
 525
 526 extern void request_quit (int);
 527
 528 extern void do_cleanups (struct cleanup *);
 529 extern void do_final_cleanups (struct cleanup *);
 530 extern void do_my_cleanups (struct cleanup **, struct cleanup *);
 531 extern void do_run_cleanups (struct cleanup *);
 532 extern void do_exec_cleanups (struct cleanup *);
 533 extern void do_exec_error_cleanups (struct cleanup *);
 534
 535 extern void discard_cleanups (struct cleanup *);
 536 extern void discard_final_cleanups (struct cleanup *);
 537 extern void discard_exec_error_cleanups (struct cleanup *);
 538 extern void discard_my_cleanups (struct cleanup **, struct cleanup *);
 539
 540 /* NOTE: cagney/2000-03-04: This typedef is strictly for the
 541    make_cleanup function declarations below. Do not use this typedef
 542    as a cast when passing functions into the make_cleanup() code.
 543    Instead either use a bounce function or add a wrapper function.
 544    Calling a f(char*) function with f(void*) is non-portable. */
 545 typedef void (make_cleanup_ftype) (void *);
 546
 547 extern struct cleanup *make_cleanup (make_cleanup_ftype *, void *);
 548
 549 extern struct cleanup *make_cleanup_freeargv (char **);
 550
 551 struct ui_file;
 552 extern struct cleanup *make_cleanup_ui_file_delete (struct ui_file *);
 553
 554 extern struct cleanup *make_cleanup_close (int fd);
 555
 556 extern struct cleanup *make_cleanup_bfd_close (bfd *abfd);
 557
 558 extern struct cleanup *make_final_cleanup (make_cleanup_ftype *, void *);
 559
 560 extern struct cleanup *make_my_cleanup (struct cleanup **,
 561                                         make_cleanup_ftype *, void *);
 562
 563 extern struct cleanup *make_run_cleanup (make_cleanup_ftype *, void *);
 564
 565 extern struct cleanup *make_exec_cleanup (make_cleanup_ftype *, void *);
 566 extern struct cleanup *make_exec_error_cleanup (make_cleanup_ftype *, void *);
 567
 568 extern struct cleanup *save_cleanups (void);
 569 extern struct cleanup *save_final_cleanups (void);
 570 extern struct cleanup *save_my_cleanups (struct cleanup **);
 571
 572 extern void restore_cleanups (struct cleanup *);
 573 extern void restore_final_cleanups (struct cleanup *);
 574 extern void restore_my_cleanups (struct cleanup **, struct cleanup *);
 575
 576 extern void free_current_contents (void *);
 577
 578 extern void null_cleanup (void *);
 579
 580 extern int myread (int, char *, int);
 581
 582 extern int query (char *, ...) ATTR_FORMAT (printf, 1, 2);
 583
 584 extern void init_page_info (void);
 585
 586 extern CORE_ADDR host_pointer_to_address (void *ptr);
 587 extern void *address_to_host_pointer (CORE_ADDR addr);
 588
 589 /* From demangle.c */
 590
 591 extern void set_demangling_style (char *);
 592
 593 /* From tm.h */
 594
 595 struct type;
 596 typedef int (use_struct_convention_fn) (int gcc_p, struct type * value_type);
 597 extern use_struct_convention_fn generic_use_struct_convention;
 598
 599 typedef unsigned char *(breakpoint_from_pc_fn) (CORE_ADDR * pcptr, int *lenptr);
 600 \f
 601 /* Annotation stuff.  */
 602
 603 extern int annotation_level;    /* in stack.c */
 604 \f
 605 extern void begin_line (void);
 606
 607 extern void wrap_here (char *);
 608
 609 extern void reinitialize_more_filter (void);
 610
 611 /* Normal results */
 612 extern struct ui_file *gdb_stdout;
 613 /* Serious error notifications */
 614 extern struct ui_file *gdb_stderr;
 615 /* Log/debug/trace messages that should bypass normal stdout/stderr
 616    filtering.  For momement, always call this stream using
 617    *_unfiltered. In the very near future that restriction shall be
 618    removed - either call shall be unfiltered. (cagney 1999-06-13). */
 619 extern struct ui_file *gdb_stdlog;
 620 /* Target output that should bypass normal stdout/stderr filtering.
 621    For momement, always call this stream using *_unfiltered. In the
 622    very near future that restriction shall be removed - either call
 623    shall be unfiltered. (cagney 1999-07-02). */
 624 extern struct ui_file *gdb_stdtarg;
 625
 626 #if defined(TUI)
 627 #include "tui.h"
 628 #include "tuiCommand.h"
 629 #include "tuiData.h"
 630 #include "tuiIO.h"
 631 #include "tuiLayout.h"
 632 #include "tuiWin.h"
 633 #endif
 634
 635 #include "ui-file.h"
 636
 637 /* More generic printf like operations.  Filtered versions may return
 638    non-locally on error.  */
 639
 640 extern void fputs_filtered (const char *, struct ui_file *);
 641
 642 extern void fputs_unfiltered (const char *, struct ui_file *);
 643
 644 extern int fputc_filtered (int c, struct ui_file *);
 645
 646 extern int fputc_unfiltered (int c, struct ui_file *);
 647
 648 extern int putchar_filtered (int c);
 649
 650 extern int putchar_unfiltered (int c);
 651
 652 extern void puts_filtered (const char *);
 653
 654 extern void puts_unfiltered (const char *);
 655
 656 extern void puts_debug (char *prefix, char *string, char *suffix);
 657
 658 extern void vprintf_filtered (const char *, va_list) ATTR_FORMAT (printf, 1, 0);
 659
 660 extern void vfprintf_filtered (struct ui_file *, const char *, va_list) ATTR_FORMAT (printf, 2, 0);
 661
 662 extern void fprintf_filtered (struct ui_file *, const char *, ...) ATTR_FORMAT (printf, 2, 3);
 663
 664 extern void fprintfi_filtered (int, struct ui_file *, const char *, ...) ATTR_FORMAT (printf, 3, 4);
 665
 666 extern void printf_filtered (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 667
 668 extern void printfi_filtered (int, const char *, ...) ATTR_FORMAT (printf, 2, 3);
 669
 670 extern void vprintf_unfiltered (const char *, va_list) ATTR_FORMAT (printf, 1, 0);
 671
 672 extern void vfprintf_unfiltered (struct ui_file *, const char *, va_list) ATTR_FORMAT (printf, 2, 0);
 673
 674 extern void fprintf_unfiltered (struct ui_file *, const char *, ...) ATTR_FORMAT (printf, 2, 3);
 675
 676 extern void printf_unfiltered (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 677
 678 extern void print_spaces (int, struct ui_file *);
 679
 680 extern void print_spaces_filtered (int, struct ui_file *);
 681
 682 extern char *n_spaces (int);
 683
 684 extern void fputstr_filtered (const char *str, int quotr, struct ui_file * stream);
 685
 686 extern void fputstr_unfiltered (const char *str, int quotr, struct ui_file * stream);
 687
 688 extern void fputstrn_unfiltered (const char *str, int n, int quotr, struct ui_file * stream);
 689
 690 /* Display the host ADDR on STREAM formatted as ``0x%x''. */
 691 extern void gdb_print_host_address (void *addr, struct ui_file *stream);
 692
 693 /* Convert a CORE_ADDR into a HEX string.  paddr() is like %08lx.
 694    paddr_nz() is like %lx.  paddr_u() is like %lu. paddr_width() is
 695    for ``%*''. */
 696 extern int strlen_paddr (void);
 697 extern char *paddr (CORE_ADDR addr);
 698 extern char *paddr_nz (CORE_ADDR addr);
 699 extern char *paddr_u (CORE_ADDR addr);
 700 extern char *paddr_d (LONGEST addr);
 701
 702 extern char *phex (ULONGEST l, int sizeof_l);
 703 extern char *phex_nz (ULONGEST l, int sizeof_l);
 704
 705 extern void fprintf_symbol_filtered (struct ui_file *, char *,
 706                                      enum language, int);
 707
 708 extern NORETURN void perror_with_name (char *) ATTR_NORETURN;
 709
 710 extern void print_sys_errmsg (char *, int);
 711
 712 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 713    "const char *" in unistd.h, so we can't declare the argument
 714    as "char *".  */
 715
 716 extern char *re_comp (const char *);
 717
 718 /* From symfile.c */
 719
 720 extern void symbol_file_command (char *, int);
 721
 722 /* Remote targets may wish to use this as their load function.  */
 723 extern void generic_load (char *name, int from_tty);
 724
 725 /* Summarise a download */
 726 extern void print_transfer_performance (struct ui_file *stream,
 727                                         unsigned long data_count,
 728                                         unsigned long write_count,
 729                                         unsigned long time_count);
 730
 731 /* From top.c */
 732
 733 typedef void initialize_file_ftype (void);
 734
 735 extern char *skip_quoted (char *);
 736
 737 extern char *gdb_readline (char *);
 738
 739 extern char *command_line_input (char *, int, char *);
 740
 741 extern void print_prompt (void);
 742
 743 extern int input_from_terminal_p (void);
 744
 745 extern int info_verbose;
 746
 747 /* From printcmd.c */
 748
 749 extern void set_next_address (CORE_ADDR);
 750
 751 extern void print_address_symbolic (CORE_ADDR, struct ui_file *, int,
 752                                     char *);
 753
 754 extern int build_address_symbolic (CORE_ADDR addr,
 755                                    int do_demangle,
 756                                    char **name,
 757                                    int *offset,
 758                                    char **filename,
 759                                    int *line,
 760                                    int *unmapped);
 761
 762 extern void print_address_numeric (CORE_ADDR, int, struct ui_file *);
 763
 764 extern void print_address (CORE_ADDR, struct ui_file *);
 765
 766 /* From source.c */
 767
 768 extern int openp (const char *, int, const char *, int, int, char **);
 769
 770 extern int source_full_path_of (char *, char **);
 771
 772 extern void mod_path (char *, char **);
 773
 774 extern void directory_command (char *, int);
 775
 776 extern void init_source_path (void);
 777
 778 extern char *symtab_to_filename (struct symtab *);
 779
 780 /* From exec.c */
 781
 782 extern void exec_set_section_offsets (bfd_signed_vma text_off,
 783                                       bfd_signed_vma data_off,
 784                                       bfd_signed_vma bss_off);
 785
 786 /* From findvar.c */
 787
 788 extern int read_relative_register_raw_bytes (int, char *);
 789
 790 /* Possible lvalue types.  Like enum language, this should be in
 791    value.h, but needs to be here for the same reason. */
 792
 793 enum lval_type
 794   {
 795     /* Not an lval. */
 796     not_lval,
 797     /* In memory.  Could be a saved register.  */
 798     lval_memory,
 799     /* In a register.  */
 800     lval_register,
 801     /* In a gdb internal variable.  */
 802     lval_internalvar,
 803     /* Part of a gdb internal variable (structure field).  */
 804     lval_internalvar_component,
 805     /* In a register series in a frame not the current one, which may have been
 806        partially saved or saved in different places (otherwise would be
 807        lval_register or lval_memory).  */
 808     lval_reg_frame_relative
 809   };
 810
 811 struct frame_info;
 812
 813 /* From readline (but not in any readline .h files).  */
 814
 815 extern char *tilde_expand (char *);
 816
 817 /* Control types for commands */
 818
 819 enum misc_command_type
 820   {
 821     ok_command,
 822     end_command,
 823     else_command,
 824     nop_command
 825   };
 826
 827 enum command_control_type
 828   {
 829     simple_control,
 830     break_control,
 831     continue_control,
 832     while_control,
 833     if_control,
 834     invalid_control
 835   };
 836
 837 /* Structure for saved commands lines
 838    (for breakpoints, defined commands, etc).  */
 839
 840 struct command_line
 841   {
 842     struct command_line *next;
 843     char *line;
 844     enum command_control_type control_type;
 845     int body_count;
 846     struct command_line **body_list;
 847   };
 848
 849 extern struct command_line *read_command_lines (char *, int);
 850
 851 extern void free_command_lines (struct command_line **);
 852
 853 /* To continue the execution commands when running gdb asynchronously.
 854    A continuation structure contains a pointer to a function to be called
 855    to finish the command, once the target has stopped. Such mechanism is
 856    used bt the finish and until commands, and in the remote protocol
 857    when opening an extended-remote connection. */
 858
 859 struct continuation_arg
 860   {
 861     struct continuation_arg *next;
 862     union continuation_data {
 863       void *pointer;
 864       int   integer;
 865       long  longint;
 866     } data;
 867   };
 868
 869 struct continuation
 870   {
 871     void (*continuation_hook) (struct continuation_arg *);
 872     struct continuation_arg *arg_list;
 873     struct continuation *next;
 874   };
 875
 876 /* In infrun.c. */
 877 extern struct continuation *cmd_continuation;
 878 /* Used only by the step_1 function. */
 879 extern struct continuation *intermediate_continuation;
 880
 881 /* From utils.c */
 882 extern void add_continuation (void (*)(struct continuation_arg *),
 883                               struct continuation_arg *);
 884 extern void do_all_continuations (void);
 885 extern void discard_all_continuations (void);
 886
 887 extern void add_intermediate_continuation (void (*)(struct continuation_arg *),
 888                               struct continuation_arg *);
 889 extern void do_all_intermediate_continuations (void);
 890 extern void discard_all_intermediate_continuations (void);
 891
 892 /* String containing the current directory (what getwd would return).  */
 893
 894 extern char *current_directory;
 895
 896 /* Default radixes for input and output.  Only some values supported.  */
 897 extern unsigned input_radix;
 898 extern unsigned output_radix;
 899
 900 /* Possibilities for prettyprint parameters to routines which print
 901    things.  Like enum language, this should be in value.h, but needs
 902    to be here for the same reason.  FIXME:  If we can eliminate this
 903    as an arg to LA_VAL_PRINT, then we can probably move it back to
 904    value.h. */
 905
 906 enum val_prettyprint
 907   {
 908     Val_no_prettyprint = 0,
 909     Val_prettyprint,
 910     /* Use the default setting which the user has specified.  */
 911     Val_pretty_default
 912   };
 913
 914 /* The ptid struct is a collection of the various "ids" necessary
 915    for identifying the inferior.  This consists of the process id
 916    (pid), thread id (tid), and other fields necessary for uniquely
 917    identifying the inferior process/thread being debugged.  When
 918    manipulating ptids, the constructors, accessors, and predicate
 919    declared in inferior.h should be used.  These are as follows:
 920
 921       ptid_build        - Make a new ptid from a pid, lwp, and tid.
 922       pid_to_ptid       - Make a new ptid from just a pid.
 923       ptid_get_pid      - Fetch the pid component of a ptid.
 924       ptid_get_lwp      - Fetch the lwp component of a ptid.
 925       ptid_get_tid      - Fetch the tid component of a ptid.
 926       ptid_equal        - Test to see if two ptids are equal.
 927
 928    Please do NOT access the struct ptid members directly (except, of
 929    course, in the implementation of the above ptid manipulation
 930    functions).  */
 931
 932 struct ptid
 933   {
 934     /* Process id */
 935     int pid;
 936
 937     /* Lightweight process id */
 938     long lwp;
 939
 940     /* Thread id */
 941     long tid;
 942   };
 943
 944 typedef struct ptid ptid_t;
 945
 946 \f
 947
 948 /* Optional host machine definition.  Pure autoconf targets will not
 949    need a "xm.h" file.  This will be a symlink to one of the xm-*.h
 950    files, built by the `configure' script.  */
 951
 952 #ifdef GDB_XM_FILE
 953 #include "xm.h"
 954 #endif
 955
 956 /* Optional native machine support.  Non-native (and possibly pure
 957    multi-arch) targets do not need a "nm.h" file.  This will be a
 958    symlink to one of the nm-*.h files, built by the `configure'
 959    script.  */
 960
 961 #ifdef GDB_NM_FILE
 962 #include "nm.h"
 963 #endif
 964
 965 /* Optional target machine definition.  Pure multi-arch configurations
 966    do not need a "tm.h" file.  This will be a symlink to one of the
 967    tm-*.h files, built by the `configure' script.  */
 968
 969 #ifdef GDB_TM_FILE
 970 #include "tm.h"
 971 #endif
 972
 973 /* GDB_MULTI_ARCH is normally set by configure.in using information
 974    from configure.tgt or the config/%/%.mt Makefile fragment.  Since
 975    some targets have defined it in their "tm.h" file, delay providing
 976    a default definition until after "tm.h" has been included.. */
 977
 978 #ifndef GDB_MULTI_ARCH
 979 #define GDB_MULTI_ARCH 0
 980 #endif
 981
 982
 983 /* If the xm.h file did not define the mode string used to open the
 984    files, assume that binary files are opened the same way as text
 985    files */
 986 #ifndef FOPEN_RB
 987 #include "fopen-same.h"
 988 #endif
 989
 990 #define CONST_PTR const
 991
 992 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 993    FIXME: Assumes 2's complement arithmetic */
 994
 995 #if !defined (UINT_MAX)
 996 #define UINT_MAX ((unsigned int)(~0))   /* 0xFFFFFFFF for 32-bits */
 997 #endif
 998
 999 #if !defined (INT_MAX)
1000 #define INT_MAX ((int)(UINT_MAX >> 1))  /* 0x7FFFFFFF for 32-bits */
1001 #endif
1002
1003 #if !defined (INT_MIN)
1004 #define INT_MIN ((int)((int) ~0 ^ INT_MAX))     /* 0x80000000 for 32-bits */
1005 #endif
1006
1007 #if !defined (ULONG_MAX)
1008 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
1009 #endif
1010
1011 #if !defined (LONG_MAX)
1012 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
1013 #endif
1014
1015 #if !defined (ULONGEST_MAX)
1016 #define ULONGEST_MAX (~(ULONGEST)0)        /* 0xFFFFFFFFFFFFFFFF for 64-bits */
1017 #endif
1018
1019 #if !defined (LONGEST_MAX)                 /* 0x7FFFFFFFFFFFFFFF for 64-bits */
1020 #define LONGEST_MAX ((LONGEST)(ULONGEST_MAX >> 1))
1021 #endif
1022
1023 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
1024    arguments to a function, number in a value history, register number, etc.)
1025    where the value must not be larger than can fit in an int.  */
1026
1027 extern int longest_to_int (LONGEST);
1028
1029 /* Assorted functions we can declare, now that const and volatile are
1030    defined.  */
1031
1032 extern char *savestring (const char *, size_t);
1033
1034 extern char *msavestring (void *, const char *, size_t);
1035
1036 extern char *mstrsave (void *, const char *);
1037
1038 #if !defined (USE_MMALLOC)
1039 /* NOTE: cagney/2000-03-04: The mmalloc functions need to use PTR
1040    rather than void* so that they are consistent with the delcaration
1041    in ../mmalloc/mmalloc.h. */
1042 extern PTR mcalloc (PTR, size_t, size_t);
1043 extern PTR mmalloc (PTR, size_t);
1044 extern PTR mrealloc (PTR, PTR, size_t);
1045 extern void mfree (PTR, PTR);
1046 #endif
1047
1048 /* Robust versions of same.  Throw an internal error when no memory,
1049    guard against stray NULL arguments. */
1050 extern void *xmmalloc (void *md, size_t size);
1051 extern void *xmrealloc (void *md, void *ptr, size_t size);
1052 extern void *xmcalloc (void *md, size_t number, size_t size);
1053 extern void xmfree (void *md, void *ptr);
1054
1055 /* xmalloc(), xrealloc() and xcalloc() have already been declared in
1056    "libiberty.h". */
1057 extern void xfree (void *);
1058
1059 /* Like asprintf/vasprintf but get an internal_error if the call
1060    fails. */
1061 extern void xasprintf (char **ret, const char *format, ...) ATTR_FORMAT (printf, 2, 3);
1062 extern void xvasprintf (char **ret, const char *format, va_list ap);
1063
1064 extern int parse_escape (char **);
1065
1066 /* Message to be printed before the error message, when an error occurs.  */
1067
1068 extern char *error_pre_print;
1069
1070 /* Message to be printed before the error message, when an error occurs.  */
1071
1072 extern char *quit_pre_print;
1073
1074 /* Message to be printed before the warning message, when a warning occurs.  */
1075
1076 extern char *warning_pre_print;
1077
1078 extern NORETURN void verror (const char *fmt, va_list ap) ATTR_NORETURN;
1079
1080 extern NORETURN void error (const char *fmt, ...) ATTR_NORETURN;
1081
1082 /* DEPRECATED: Use error(), verror() or error_stream(). */
1083 extern NORETURN void error_begin (void);
1084
1085 extern NORETURN void error_stream (struct ui_file *) ATTR_NORETURN;
1086
1087 /* Returns a freshly allocate buffer containing the last error
1088    message.  */
1089 extern char *error_last_message (void);
1090
1091 extern NORETURN void internal_verror (const char *file, int line,
1092                                       const char *, va_list ap) ATTR_NORETURN;
1093
1094 extern NORETURN void internal_error (const char *file, int line,
1095                                      const char *, ...) ATTR_NORETURN ATTR_FORMAT (printf, 3, 4);
1096
1097 extern NORETURN void nomem (long) ATTR_NORETURN;
1098
1099 /* Reasons for calling return_to_top_level.  Note: enum value 0 is
1100    reserved for internal use as the return value from an initial
1101    setjmp().  */
1102
1103 enum return_reason
1104   {
1105     /* User interrupt.  */
1106     RETURN_QUIT = 1,
1107     /* Any other error.  */
1108     RETURN_ERROR
1109   };
1110
1111 #define ALL_CLEANUPS    ((struct cleanup *)0)
1112
1113 #define RETURN_MASK(reason)     (1 << (int)(reason))
1114 #define RETURN_MASK_QUIT        RETURN_MASK (RETURN_QUIT)
1115 #define RETURN_MASK_ERROR       RETURN_MASK (RETURN_ERROR)
1116 #define RETURN_MASK_ALL         (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
1117 typedef int return_mask;
1118
1119 extern NORETURN void return_to_top_level (enum return_reason) ATTR_NORETURN;
1120
1121 /* If CATCH_ERRORS_FTYPE throws an error, catch_errors() returns zero
1122    otherwize the result from CATCH_ERRORS_FTYPE is returned. It is
1123    probably useful for CATCH_ERRORS_FTYPE to always return a non-zero
1124    value. It's unfortunate that, catch_errors() does not return an
1125    indication of the exact exception that it caught - quit_flag might
1126    help. */
1127
1128 typedef int (catch_errors_ftype) (PTR);
1129 extern int catch_errors (catch_errors_ftype *, PTR, char *, return_mask);
1130
1131 /* Template to catch_errors() that wraps calls to command
1132    functions. */
1133
1134 typedef void (catch_command_errors_ftype) (char *, int);
1135 extern int catch_command_errors (catch_command_errors_ftype *func, char *command, int from_tty, return_mask);
1136
1137 extern void warning_begin (void);
1138
1139 extern void warning (const char *, ...) ATTR_FORMAT (printf, 1, 2);
1140
1141 /* Global functions from other, non-gdb GNU thingies.
1142    Libiberty thingies are no longer declared here.  We include libiberty.h
1143    above, instead.  */
1144
1145 #ifndef GETENV_PROVIDED
1146 extern char *getenv (const char *);
1147 #endif
1148
1149 /* From other system libraries */
1150
1151 #ifdef HAVE_STDDEF_H
1152 #include <stddef.h>
1153 #endif
1154
1155 #ifdef HAVE_STDLIB_H
1156 #include <stdlib.h>
1157 #endif
1158 #ifndef min
1159 #define min(a, b) ((a) < (b) ? (a) : (b))
1160 #endif
1161 #ifndef max
1162 #define max(a, b) ((a) > (b) ? (a) : (b))
1163 #endif
1164
1165
1166 /* We take the address of fclose later, but some stdio's forget
1167    to declare this.  We can't always declare it since there's
1168    no way to declare the parameters without upsetting some compiler
1169    somewhere. */
1170
1171 #ifndef FCLOSE_PROVIDED
1172 extern int fclose (FILE *);
1173 #endif
1174
1175 #ifndef atof
1176 extern double atof (const char *);      /* X3.159-1989  4.10.1.1 */
1177 #endif
1178
1179 /* Various possibilities for alloca.  */
1180 #ifndef alloca
1181 #ifdef __GNUC__
1182 #define alloca __builtin_alloca
1183 #else /* Not GNU C */
1184 #ifdef HAVE_ALLOCA_H
1185 #include <alloca.h>
1186 #else
1187 #ifdef _AIX
1188 #pragma alloca
1189 #else
1190
1191 /* We need to be careful not to declare this in a way which conflicts with
1192    bison.  Bison never declares it as char *, but under various circumstances
1193    (like __hpux) we need to use void *.  */
1194 extern void *alloca ();
1195 #endif /* Not _AIX */
1196 #endif /* Not HAVE_ALLOCA_H */
1197 #endif /* Not GNU C */
1198 #endif /* alloca not defined */
1199
1200 /* HOST_BYTE_ORDER must be defined to one of these.  */
1201
1202 #ifdef HAVE_ENDIAN_H
1203 #include <endian.h>
1204 #endif
1205
1206 #if !defined (BIG_ENDIAN)
1207 #define BIG_ENDIAN 4321
1208 #endif
1209
1210 #if !defined (LITTLE_ENDIAN)
1211 #define LITTLE_ENDIAN 1234
1212 #endif
1213
1214 /* Dynamic target-system-dependent parameters for GDB. */
1215 #include "gdbarch.h"
1216 #if (GDB_MULTI_ARCH == 0)
1217 /* Multi-arch targets _should_ be including "arch-utils.h" directly
1218    into their *-tdep.c file.  This is a prop to help old non-
1219    multi-arch targets to continue to compile. */
1220 #include "arch-utils.h"
1221 #endif
1222
1223 /* Static target-system-dependent parameters for GDB. */
1224
1225 /* Number of bits in a char or unsigned char for the target machine.
1226    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
1227 #if !defined (TARGET_CHAR_BIT)
1228 #define TARGET_CHAR_BIT 8
1229 #endif
1230
1231 /* If we picked up a copy of CHAR_BIT from a configuration file
1232    (which may get it by including <limits.h>) then use it to set
1233    the number of bits in a host char.  If not, use the same size
1234    as the target. */
1235
1236 #if defined (CHAR_BIT)
1237 #define HOST_CHAR_BIT CHAR_BIT
1238 #else
1239 #define HOST_CHAR_BIT TARGET_CHAR_BIT
1240 #endif
1241
1242 /* The bit byte-order has to do just with numbering of bits in
1243    debugging symbols and such.  Conceptually, it's quite separate
1244    from byte/word byte order.  */
1245
1246 #if !defined (BITS_BIG_ENDIAN)
1247 #define BITS_BIG_ENDIAN (TARGET_BYTE_ORDER == BIG_ENDIAN)
1248 #endif
1249
1250 /* In findvar.c.  */
1251
1252 extern LONGEST extract_signed_integer (void *, int);
1253
1254 extern ULONGEST extract_unsigned_integer (void *, int);
1255
1256 extern int extract_long_unsigned_integer (void *, int, LONGEST *);
1257
1258 extern CORE_ADDR extract_address (void *, int);
1259
1260 extern CORE_ADDR extract_typed_address (void *buf, struct type *type);
1261
1262 extern void store_signed_integer (void *, int, LONGEST);
1263
1264 extern void store_unsigned_integer (void *, int, ULONGEST);
1265
1266 extern void store_address (void *, int, LONGEST);
1267
1268 extern void store_typed_address (void *buf, struct type *type, CORE_ADDR addr);
1269
1270 /* Setup definitions for host and target floating point formats.  We need to
1271    consider the format for `float', `double', and `long double' for both target
1272    and host.  We need to do this so that we know what kind of conversions need
1273    to be done when converting target numbers to and from the hosts DOUBLEST
1274    data type.  */
1275
1276 /* This is used to indicate that we don't know the format of the floating point
1277    number.  Typically, this is useful for native ports, where the actual format
1278    is irrelevant, since no conversions will be taking place.  */
1279
1280 extern const struct floatformat floatformat_unknown;
1281
1282 #if HOST_BYTE_ORDER == BIG_ENDIAN
1283 #ifndef HOST_FLOAT_FORMAT
1284 #define HOST_FLOAT_FORMAT &floatformat_ieee_single_big
1285 #endif
1286 #ifndef HOST_DOUBLE_FORMAT
1287 #define HOST_DOUBLE_FORMAT &floatformat_ieee_double_big
1288 #endif
1289 #else /* LITTLE_ENDIAN */
1290 #ifndef HOST_FLOAT_FORMAT
1291 #define HOST_FLOAT_FORMAT &floatformat_ieee_single_little
1292 #endif
1293 #ifndef HOST_DOUBLE_FORMAT
1294 #define HOST_DOUBLE_FORMAT &floatformat_ieee_double_little
1295 #endif
1296 #endif
1297
1298 #ifndef HOST_LONG_DOUBLE_FORMAT
1299 #define HOST_LONG_DOUBLE_FORMAT &floatformat_unknown
1300 #endif
1301
1302 /* Use `long double' if the host compiler supports it.  (Note that this is not
1303    necessarily any longer than `double'.  On SunOS/gcc, it's the same as
1304    double.)  This is necessary because GDB internally converts all floating
1305    point values to the widest type supported by the host.
1306
1307    There are problems however, when the target `long double' is longer than the
1308    host's `long double'.  In general, we'll probably reduce the precision of
1309    any such values and print a warning.  */
1310
1311 #ifdef HAVE_LONG_DOUBLE
1312 typedef long double DOUBLEST;
1313 #else
1314 typedef double DOUBLEST;
1315 #endif
1316
1317 extern void floatformat_to_doublest (const struct floatformat *,
1318                                      char *, DOUBLEST *);
1319 extern void floatformat_from_doublest (const struct floatformat *,
1320                                        DOUBLEST *, char *);
1321
1322 extern int floatformat_is_negative (const struct floatformat *, char *);
1323 extern int floatformat_is_nan (const struct floatformat *, char *);
1324 extern char *floatformat_mantissa (const struct floatformat *, char *);
1325
1326 extern DOUBLEST extract_floating (void *, int);
1327 extern void store_floating (void *, int, DOUBLEST);
1328 \f
1329 /* From valops.c */
1330
1331 extern CORE_ADDR push_bytes (CORE_ADDR, char *, int);
1332
1333 extern CORE_ADDR push_word (CORE_ADDR, ULONGEST);
1334
1335 extern int watchdog;
1336
1337 /* Hooks for alternate command interfaces.  */
1338
1339 #ifdef UI_OUT
1340 /* The name of the interpreter if specified on the command line. */
1341 extern char *interpreter_p;
1342 #endif
1343
1344 /* If a given interpreter matches INTERPRETER_P then it should update
1345    command_loop_hook and init_ui_hook with the per-interpreter
1346    implementation. */
1347 /* FIXME: command_loop_hook and init_ui_hook should be moved here. */
1348
1349 struct target_waitstatus;
1350 struct cmd_list_element;
1351
1352 /* Should the asynchronous variant of the interpreter (using the
1353    event-loop) be enabled? */
1354 extern int event_loop_p;
1355
1356 extern void (*init_ui_hook) (char *argv0);
1357 extern void (*command_loop_hook) (void);
1358 extern void (*show_load_progress) (const char *section,
1359                                    unsigned long section_sent,
1360                                    unsigned long section_size,
1361                                    unsigned long total_sent,
1362                                    unsigned long total_size);
1363 extern void (*print_frame_info_listing_hook) (struct symtab * s,
1364                                               int line, int stopline,
1365                                               int noerror);
1366 extern struct frame_info *parse_frame_specification (char *frame_exp);
1367 extern int (*query_hook) (const char *, va_list);
1368 extern void (*warning_hook) (const char *, va_list);
1369 extern void (*flush_hook) (struct ui_file * stream);
1370 extern void (*create_breakpoint_hook) (struct breakpoint * b);
1371 extern void (*delete_breakpoint_hook) (struct breakpoint * bpt);
1372 extern void (*modify_breakpoint_hook) (struct breakpoint * bpt);
1373 extern void (*interactive_hook) (void);
1374 extern void (*registers_changed_hook) (void);
1375 extern void (*readline_begin_hook) (char *,...);
1376 extern char *(*readline_hook) (char *);
1377 extern void (*readline_end_hook) (void);
1378 extern void (*register_changed_hook) (int regno);
1379 extern void (*memory_changed_hook) (CORE_ADDR addr, int len);
1380 extern void (*context_hook) (int);
1381 extern ptid_t (*target_wait_hook) (ptid_t ptid,
1382                                          struct target_waitstatus * status);
1383
1384 extern void (*attach_hook) (void);
1385 extern void (*detach_hook) (void);
1386 extern void (*call_command_hook) (struct cmd_list_element * c,
1387                                   char *cmd, int from_tty);
1388
1389 extern void (*set_hook) (struct cmd_list_element * c);
1390
1391 extern NORETURN void (*error_hook) (void) ATTR_NORETURN;
1392
1393 extern void (*error_begin_hook) (void);
1394
1395 extern int (*ui_load_progress_hook) (const char *section, unsigned long num);
1396
1397
1398 /* Inhibit window interface if non-zero. */
1399
1400 extern int use_windows;
1401
1402 /* Symbolic definitions of filename-related things.  */
1403 /* FIXME, this doesn't work very well if host and executable
1404    filesystems conventions are different.  */
1405
1406 #ifndef DIRNAME_SEPARATOR
1407 #define DIRNAME_SEPARATOR ':'
1408 #endif
1409
1410 #ifndef SLASH_STRING
1411 #ifdef _WIN32
1412 #define SLASH_STRING "\\"
1413 #else
1414 #define SLASH_STRING "/"
1415 #endif
1416 #endif
1417
1418 /* Provide default definitions of PIDGET, TIDGET, and MERGEPID.
1419    The name ``TIDGET'' is a historical accident.  Many uses of TIDGET
1420    in the code actually refer to a lightweight process id, i.e,
1421    something that can be considered a process id in its own right for
1422    certain purposes.  */
1423
1424 #ifndef PIDGET
1425 #define PIDGET(PTID) (ptid_get_pid (PTID))
1426 #define TIDGET(PTID) (ptid_get_lwp (PTID))
1427 #define MERGEPID(PID, TID) ptid_build (PID, TID, 0)
1428 #endif
1429
1430 /* Define well known filenos if the system does not define them.  */
1431 #ifndef STDIN_FILENO
1432 #define STDIN_FILENO   0
1433 #endif
1434 #ifndef STDOUT_FILENO
1435 #define STDOUT_FILENO  1
1436 #endif
1437 #ifndef STDERR_FILENO
1438 #define STDERR_FILENO  2
1439 #endif
1440
1441 /* If this definition isn't overridden by the header files, assume
1442    that isatty and fileno exist on this system.  */
1443 #ifndef ISATTY
1444 #define ISATTY(FP)      (isatty (fileno (FP)))
1445 #endif
1446
1447 \f
1448 /* FIXME: cagney/1999-12-13: The following will be moved to gdb.h /
1449    libgdb.h or gdblib.h. */
1450
1451 /* Return-code (RC) from a gdb library call.  (The abreviation RC is
1452    taken from the sim/common directory.) */
1453
1454 enum gdb_rc {
1455   /* The operation failed.  The failure message can be fetched by
1456      calling ``char *error_last_message(void)''. The value is
1457      determined by the catch_errors() interface. */
1458   /* NOTE: Since ``defs.h:catch_errors()'' does not return an error /
1459      internal / quit indication it is not possible to return that
1460      here. */
1461   GDB_RC_FAIL = 0,
1462   /* No error occured but nothing happened. Due to the catch_errors()
1463      interface, this must be non-zero. */
1464   GDB_RC_NONE = 1,
1465   /* The operation was successful. Due to the catch_errors()
1466      interface, this must be non-zero. */
1467   GDB_RC_OK = 2
1468 };
1469
1470
1471 /* Print the specified breakpoint on GDB_STDOUT. (Eventually this
1472    function will ``print'' the object on ``output''). */
1473 enum gdb_rc gdb_breakpoint_query (/* struct {ui,gdb}_out *output, */ int bnum);
1474
1475 /* Create a breakpoint at ADDRESS (a GDB source and line). */
1476 enum gdb_rc gdb_breakpoint (char *address, char *condition,
1477                             int hardwareflag, int tempflag,
1478                             int thread, int ignore_count);
1479 enum gdb_rc gdb_thread_select (/* output object */ char *tidstr);
1480
1481 #ifdef UI_OUT
1482 /* Print a list of known thread ids. */
1483 enum gdb_rc gdb_list_thread_ids (/* output object */);
1484
1485 /* Switch thread and print notification. */
1486 #endif
1487
1488 #endif /* #ifndef DEFS_H */