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, 2002
   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 /* For BFD64 and bfd_vma.  */
  63 #include "bfd.h"
  64
  65
  66 /* The target is partially multi-arched.  Both "tm.h" and the
  67    multi-arch vector provide definitions.  "tm.h" normally overrides
  68    the multi-arch vector (but there are a few exceptions).  */
  69
  70 #define GDB_MULTI_ARCH_PARTIAL 1
  71
  72 /* The target is partially multi-arched. Both the multi-arch vector
  73    and "tm.h" provide definitions. "tm.h" cannot override a definition
  74    provided by the multi-arch vector.  It is detected as a compilation
  75    error.
  76
  77    This setting is only useful during a multi-arch conversion. */
  78
  79 #define GDB_MULTI_ARCH_TM 2
  80
  81 /* The target is pure multi-arch.  The MULTI-ARCH vector provides all
  82    definitions.  "tm.h" is linked to an empty file. */
  83
  84 #define GDB_MULTI_ARCH_PURE 3
  85
  86
  87
  88 /* An address in the program being debugged.  Host byte order.  Rather
  89    than duplicate all the logic in BFD which figures out what type
  90    this is (long, long long, etc.) and whether it needs to be 64
  91    bits (the host/target interactions are subtle), we just use
  92    bfd_vma.  */
  93
  94 typedef bfd_vma CORE_ADDR;
  95
  96 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
  97
  98 #ifndef LONGEST
  99
 100 #ifdef BFD64
 101
 102 #define LONGEST BFD_HOST_64_BIT
 103 #define ULONGEST BFD_HOST_U_64_BIT
 104
 105 #else /* No BFD64 */
 106
 107 #ifdef CC_HAS_LONG_LONG
 108 #define LONGEST long long
 109 #define ULONGEST unsigned long long
 110 #else
 111 #ifdef BFD_HOST_64_BIT
 112 /* BFD_HOST_64_BIT is defined for some hosts that don't have long long
 113    (e.g. i386-windows) so try it.  */
 114 #define LONGEST BFD_HOST_64_BIT
 115 #define ULONGEST BFD_HOST_U_64_BIT
 116 #else
 117 #define LONGEST long
 118 #define ULONGEST unsigned long
 119 #endif
 120 #endif
 121
 122 #endif /* No BFD64 */
 123
 124 #endif /* ! LONGEST */
 125
 126 #ifndef min
 127 #define min(a, b) ((a) < (b) ? (a) : (b))
 128 #endif
 129 #ifndef max
 130 #define max(a, b) ((a) > (b) ? (a) : (b))
 131 #endif
 132
 133 /* Macros to do string compares.
 134
 135    NOTE: cagney/2000-03-14:
 136
 137    While old code can continue to refer to these macros, new code is
 138    probably better off using strcmp() directly vis: ``strcmp() == 0''
 139    and ``strcmp() != 0''.
 140
 141    This is because modern compilers can directly inline strcmp()
 142    making the original justification for these macros - avoid function
 143    call overhead by pre-testing the first characters
 144    (``*X==*Y?...:0'') - redundant.
 145
 146    ``Even if [...] testing the first character does have a modest
 147    performance improvement, I'd rather that whenever a performance
 148    issue is found that we spend the effort on algorithmic
 149    optimizations than micro-optimizing.'' J.T. */
 150
 151 #define STREQ(a,b) (*(a) == *(b) ? !strcmp ((a), (b)) : 0)
 152 #define STREQN(a,b,c) (*(a) == *(b) ? !strncmp ((a), (b), (c)) : 0)
 153
 154 /* The character GNU C++ uses to build identifiers that must be unique from
 155    the program's identifiers (such as $this and $$vptr).  */
 156 #define CPLUS_MARKER '$'        /* May be overridden to '.' for SysV */
 157
 158 /* Check if a character is one of the commonly used C++ marker characters.  */
 159 extern int is_cplus_marker (int);
 160
 161 /* use tui interface if non-zero */
 162 extern int tui_version;
 163
 164 /* enable xdb commands if set */
 165 extern int xdb_commands;
 166
 167 /* enable dbx commands if set */
 168 extern int dbx_commands;
 169
 170 extern int quit_flag;
 171 extern int immediate_quit;
 172 extern int sevenbit_strings;
 173
 174 extern void quit (void);
 175
 176 /* FIXME: cagney/2000-03-13: It has been suggested that the peformance
 177    benefits of having a ``QUIT'' macro rather than a function are
 178    marginal.  If the overhead of a QUIT function call is proving
 179    significant then its calling frequency should probably be reduced
 180    [kingdon].  A profile analyzing the current situtation is
 181    needed. */
 182
 183 #ifdef QUIT
 184 /* do twice to force compiler warning */
 185 #define QUIT_FIXME "FIXME"
 186 #define QUIT_FIXME "ignoring redefinition of QUIT"
 187 #else
 188 #define QUIT { \
 189   if (quit_flag) quit (); \
 190   if (interactive_hook) interactive_hook (); \
 191   PROGRESS (1); \
 192 }
 193 #endif
 194
 195 /* Languages represented in the symbol table and elsewhere.
 196    This should probably be in language.h, but since enum's can't
 197    be forward declared to satisfy opaque references before their
 198    actual definition, needs to be here. */
 199
 200 enum language
 201   {
 202     language_unknown,           /* Language not known */
 203     language_auto,              /* Placeholder for automatic setting */
 204     language_c,                 /* C */
 205     language_cplus,             /* C++ */
 206     language_java,              /* Java */
 207     language_chill,             /* Chill */
 208     language_fortran,           /* Fortran */
 209     language_m2,                /* Modula-2 */
 210     language_asm,               /* Assembly language */
 211     language_scm,               /* Scheme / Guile */
 212     language_pascal             /* Pascal */
 213   };
 214
 215 enum precision_type
 216   {
 217     single_precision,
 218     double_precision,
 219     unspecified_precision
 220   };
 221
 222 /* The numbering of these signals is chosen to match traditional unix
 223    signals (insofar as various unices use the same numbers, anyway).
 224    It is also the numbering of the GDB remote protocol.  Other remote
 225    protocols, if they use a different numbering, should make sure to
 226    translate appropriately.
 227
 228    Since these numbers have actually made it out into other software
 229    (stubs, etc.), you mustn't disturb the assigned numbering.  If you
 230    need to add new signals here, add them to the end of the explicitly
 231    numbered signals.
 232
 233    This is based strongly on Unix/POSIX signals for several reasons:
 234    (1) This set of signals represents a widely-accepted attempt to
 235    represent events of this sort in a portable fashion, (2) we want a
 236    signal to make it from wait to child_wait to the user intact, (3) many
 237    remote protocols use a similar encoding.  However, it is
 238    recognized that this set of signals has limitations (such as not
 239    distinguishing between various kinds of SIGSEGV, or not
 240    distinguishing hitting a breakpoint from finishing a single step).
 241    So in the future we may get around this either by adding additional
 242    signals for breakpoint, single-step, etc., or by adding signal
 243    codes; the latter seems more in the spirit of what BSD, System V,
 244    etc. are doing to address these issues.  */
 245
 246 /* For an explanation of what each signal means, see
 247    target_signal_to_string.  */
 248
 249 enum target_signal
 250   {
 251     /* Used some places (e.g. stop_signal) to record the concept that
 252        there is no signal.  */
 253     TARGET_SIGNAL_0 = 0,
 254     TARGET_SIGNAL_FIRST = 0,
 255     TARGET_SIGNAL_HUP = 1,
 256     TARGET_SIGNAL_INT = 2,
 257     TARGET_SIGNAL_QUIT = 3,
 258     TARGET_SIGNAL_ILL = 4,
 259     TARGET_SIGNAL_TRAP = 5,
 260     TARGET_SIGNAL_ABRT = 6,
 261     TARGET_SIGNAL_EMT = 7,
 262     TARGET_SIGNAL_FPE = 8,
 263     TARGET_SIGNAL_KILL = 9,
 264     TARGET_SIGNAL_BUS = 10,
 265     TARGET_SIGNAL_SEGV = 11,
 266     TARGET_SIGNAL_SYS = 12,
 267     TARGET_SIGNAL_PIPE = 13,
 268     TARGET_SIGNAL_ALRM = 14,
 269     TARGET_SIGNAL_TERM = 15,
 270     TARGET_SIGNAL_URG = 16,
 271     TARGET_SIGNAL_STOP = 17,
 272     TARGET_SIGNAL_TSTP = 18,
 273     TARGET_SIGNAL_CONT = 19,
 274     TARGET_SIGNAL_CHLD = 20,
 275     TARGET_SIGNAL_TTIN = 21,
 276     TARGET_SIGNAL_TTOU = 22,
 277     TARGET_SIGNAL_IO = 23,
 278     TARGET_SIGNAL_XCPU = 24,
 279     TARGET_SIGNAL_XFSZ = 25,
 280     TARGET_SIGNAL_VTALRM = 26,
 281     TARGET_SIGNAL_PROF = 27,
 282     TARGET_SIGNAL_WINCH = 28,
 283     TARGET_SIGNAL_LOST = 29,
 284     TARGET_SIGNAL_USR1 = 30,
 285     TARGET_SIGNAL_USR2 = 31,
 286     TARGET_SIGNAL_PWR = 32,
 287     /* Similar to SIGIO.  Perhaps they should have the same number.  */
 288     TARGET_SIGNAL_POLL = 33,
 289     TARGET_SIGNAL_WIND = 34,
 290     TARGET_SIGNAL_PHONE = 35,
 291     TARGET_SIGNAL_WAITING = 36,
 292     TARGET_SIGNAL_LWP = 37,
 293     TARGET_SIGNAL_DANGER = 38,
 294     TARGET_SIGNAL_GRANT = 39,
 295     TARGET_SIGNAL_RETRACT = 40,
 296     TARGET_SIGNAL_MSG = 41,
 297     TARGET_SIGNAL_SOUND = 42,
 298     TARGET_SIGNAL_SAK = 43,
 299     TARGET_SIGNAL_PRIO = 44,
 300     TARGET_SIGNAL_REALTIME_33 = 45,
 301     TARGET_SIGNAL_REALTIME_34 = 46,
 302     TARGET_SIGNAL_REALTIME_35 = 47,
 303     TARGET_SIGNAL_REALTIME_36 = 48,
 304     TARGET_SIGNAL_REALTIME_37 = 49,
 305     TARGET_SIGNAL_REALTIME_38 = 50,
 306     TARGET_SIGNAL_REALTIME_39 = 51,
 307     TARGET_SIGNAL_REALTIME_40 = 52,
 308     TARGET_SIGNAL_REALTIME_41 = 53,
 309     TARGET_SIGNAL_REALTIME_42 = 54,
 310     TARGET_SIGNAL_REALTIME_43 = 55,
 311     TARGET_SIGNAL_REALTIME_44 = 56,
 312     TARGET_SIGNAL_REALTIME_45 = 57,
 313     TARGET_SIGNAL_REALTIME_46 = 58,
 314     TARGET_SIGNAL_REALTIME_47 = 59,
 315     TARGET_SIGNAL_REALTIME_48 = 60,
 316     TARGET_SIGNAL_REALTIME_49 = 61,
 317     TARGET_SIGNAL_REALTIME_50 = 62,
 318     TARGET_SIGNAL_REALTIME_51 = 63,
 319     TARGET_SIGNAL_REALTIME_52 = 64,
 320     TARGET_SIGNAL_REALTIME_53 = 65,
 321     TARGET_SIGNAL_REALTIME_54 = 66,
 322     TARGET_SIGNAL_REALTIME_55 = 67,
 323     TARGET_SIGNAL_REALTIME_56 = 68,
 324     TARGET_SIGNAL_REALTIME_57 = 69,
 325     TARGET_SIGNAL_REALTIME_58 = 70,
 326     TARGET_SIGNAL_REALTIME_59 = 71,
 327     TARGET_SIGNAL_REALTIME_60 = 72,
 328     TARGET_SIGNAL_REALTIME_61 = 73,
 329     TARGET_SIGNAL_REALTIME_62 = 74,
 330     TARGET_SIGNAL_REALTIME_63 = 75,
 331
 332     /* Used internally by Solaris threads.  See signal(5) on Solaris.  */
 333     TARGET_SIGNAL_CANCEL = 76,
 334
 335     /* Yes, this pains me, too.  But LynxOS didn't have SIG32, and now
 336        Linux does, and we can't disturb the numbering, since it's part
 337        of the remote protocol.  Note that in some GDB's
 338        TARGET_SIGNAL_REALTIME_32 is number 76.  */
 339     TARGET_SIGNAL_REALTIME_32,
 340     /* Yet another pain, IRIX 6 has SIG64. */
 341     TARGET_SIGNAL_REALTIME_64,
 342     /* Yet another pain, Linux/MIPS might go up to 128. */
 343     TARGET_SIGNAL_REALTIME_65,
 344     TARGET_SIGNAL_REALTIME_66,
 345     TARGET_SIGNAL_REALTIME_67,
 346     TARGET_SIGNAL_REALTIME_68,
 347     TARGET_SIGNAL_REALTIME_69,
 348     TARGET_SIGNAL_REALTIME_70,
 349     TARGET_SIGNAL_REALTIME_71,
 350     TARGET_SIGNAL_REALTIME_72,
 351     TARGET_SIGNAL_REALTIME_73,
 352     TARGET_SIGNAL_REALTIME_74,
 353     TARGET_SIGNAL_REALTIME_75,
 354     TARGET_SIGNAL_REALTIME_76,
 355     TARGET_SIGNAL_REALTIME_77,
 356     TARGET_SIGNAL_REALTIME_78,
 357     TARGET_SIGNAL_REALTIME_79,
 358     TARGET_SIGNAL_REALTIME_80,
 359     TARGET_SIGNAL_REALTIME_81,
 360     TARGET_SIGNAL_REALTIME_82,
 361     TARGET_SIGNAL_REALTIME_83,
 362     TARGET_SIGNAL_REALTIME_84,
 363     TARGET_SIGNAL_REALTIME_85,
 364     TARGET_SIGNAL_REALTIME_86,
 365     TARGET_SIGNAL_REALTIME_87,
 366     TARGET_SIGNAL_REALTIME_88,
 367     TARGET_SIGNAL_REALTIME_89,
 368     TARGET_SIGNAL_REALTIME_90,
 369     TARGET_SIGNAL_REALTIME_91,
 370     TARGET_SIGNAL_REALTIME_92,
 371     TARGET_SIGNAL_REALTIME_93,
 372     TARGET_SIGNAL_REALTIME_94,
 373     TARGET_SIGNAL_REALTIME_95,
 374     TARGET_SIGNAL_REALTIME_96,
 375     TARGET_SIGNAL_REALTIME_97,
 376     TARGET_SIGNAL_REALTIME_98,
 377     TARGET_SIGNAL_REALTIME_99,
 378     TARGET_SIGNAL_REALTIME_100,
 379     TARGET_SIGNAL_REALTIME_101,
 380     TARGET_SIGNAL_REALTIME_102,
 381     TARGET_SIGNAL_REALTIME_103,
 382     TARGET_SIGNAL_REALTIME_104,
 383     TARGET_SIGNAL_REALTIME_105,
 384     TARGET_SIGNAL_REALTIME_106,
 385     TARGET_SIGNAL_REALTIME_107,
 386     TARGET_SIGNAL_REALTIME_108,
 387     TARGET_SIGNAL_REALTIME_109,
 388     TARGET_SIGNAL_REALTIME_110,
 389     TARGET_SIGNAL_REALTIME_111,
 390     TARGET_SIGNAL_REALTIME_112,
 391     TARGET_SIGNAL_REALTIME_113,
 392     TARGET_SIGNAL_REALTIME_114,
 393     TARGET_SIGNAL_REALTIME_115,
 394     TARGET_SIGNAL_REALTIME_116,
 395     TARGET_SIGNAL_REALTIME_117,
 396     TARGET_SIGNAL_REALTIME_118,
 397     TARGET_SIGNAL_REALTIME_119,
 398     TARGET_SIGNAL_REALTIME_120,
 399     TARGET_SIGNAL_REALTIME_121,
 400     TARGET_SIGNAL_REALTIME_122,
 401     TARGET_SIGNAL_REALTIME_123,
 402     TARGET_SIGNAL_REALTIME_124,
 403     TARGET_SIGNAL_REALTIME_125,
 404     TARGET_SIGNAL_REALTIME_126,
 405     TARGET_SIGNAL_REALTIME_127,
 406
 407 #if defined(MACH) || defined(__MACH__)
 408     /* Mach exceptions */
 409     TARGET_EXC_BAD_ACCESS,
 410     TARGET_EXC_BAD_INSTRUCTION,
 411     TARGET_EXC_ARITHMETIC,
 412     TARGET_EXC_EMULATION,
 413     TARGET_EXC_SOFTWARE,
 414     TARGET_EXC_BREAKPOINT,
 415 #endif
 416     TARGET_SIGNAL_INFO,
 417
 418     /* Some signal we don't know about.  */
 419     TARGET_SIGNAL_UNKNOWN,
 420
 421     /* Use whatever signal we use when one is not specifically specified
 422        (for passing to proceed and so on).  */
 423     TARGET_SIGNAL_DEFAULT,
 424
 425     /* Last and unused enum value, for sizing arrays, etc.  */
 426     TARGET_SIGNAL_LAST
 427   };
 428
 429 /* the cleanup list records things that have to be undone
 430    if an error happens (descriptors to be closed, memory to be freed, etc.)
 431    Each link in the chain records a function to call and an
 432    argument to give it.
 433
 434    Use make_cleanup to add an element to the cleanup chain.
 435    Use do_cleanups to do all cleanup actions back to a given
 436    point in the chain.  Use discard_cleanups to remove cleanups
 437    from the chain back to a given point, not doing them.  */
 438
 439 struct cleanup
 440   {
 441     struct cleanup *next;
 442     void (*function) (PTR);
 443     PTR arg;
 444   };
 445
 446
 447 /* The ability to declare that a function never returns is useful, but
 448    not really required to compile GDB successfully, so the NORETURN and
 449    ATTR_NORETURN macros normally expand into nothing.  */
 450
 451 /* If compiling with older versions of GCC, a function may be declared
 452    "volatile" to indicate that it does not return.  */
 453
 454 #ifndef NORETURN
 455 #if defined(__GNUC__) \
 456      && (__GNUC__ == 1 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7))
 457 #define NORETURN volatile
 458 #else
 459 #define NORETURN                /* nothing */
 460 #endif
 461 #endif
 462
 463 /* GCC 2.5 and later versions define a function attribute "noreturn",
 464    which is the preferred way to declare that a function never returns.
 465    However GCC 2.7 appears to be the first version in which this fully
 466    works everywhere we use it. */
 467
 468 #ifndef ATTR_NORETURN
 469 #if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7))
 470 #define ATTR_NORETURN __attribute__ ((noreturn))
 471 #else
 472 #define ATTR_NORETURN           /* nothing */
 473 #endif
 474 #endif
 475
 476 #ifndef ATTR_FORMAT
 477 #if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 4))
 478 #define ATTR_FORMAT(type, x, y) __attribute__ ((format(type, x, y)))
 479 #else
 480 #define ATTR_FORMAT(type, x, y) /* nothing */
 481 #endif
 482 #endif
 483
 484 /* Needed for various prototypes */
 485
 486 struct symtab;
 487 struct breakpoint;
 488
 489 /* From blockframe.c */
 490
 491 extern int inside_entry_func (CORE_ADDR);
 492
 493 extern int inside_entry_file (CORE_ADDR addr);
 494
 495 extern int inside_main_func (CORE_ADDR pc);
 496
 497 /* From ch-lang.c, for the moment. (FIXME) */
 498
 499 extern char *chill_demangle (const char *);
 500
 501 /* From utils.c */
 502
 503 extern void initialize_utils (void);
 504
 505 extern void notice_quit (void);
 506
 507 extern int strcmp_iw (const char *, const char *);
 508
 509 extern int subset_compare (char *, char *);
 510
 511 extern char *safe_strerror (int);
 512
 513 extern void init_malloc (void *);
 514
 515 extern void request_quit (int);
 516
 517 extern void do_cleanups (struct cleanup *);
 518 extern void do_final_cleanups (struct cleanup *);
 519 extern void do_my_cleanups (struct cleanup **, struct cleanup *);
 520 extern void do_run_cleanups (struct cleanup *);
 521 extern void do_exec_cleanups (struct cleanup *);
 522 extern void do_exec_error_cleanups (struct cleanup *);
 523
 524 extern void discard_cleanups (struct cleanup *);
 525 extern void discard_final_cleanups (struct cleanup *);
 526 extern void discard_exec_error_cleanups (struct cleanup *);
 527 extern void discard_my_cleanups (struct cleanup **, struct cleanup *);
 528
 529 /* NOTE: cagney/2000-03-04: This typedef is strictly for the
 530    make_cleanup function declarations below. Do not use this typedef
 531    as a cast when passing functions into the make_cleanup() code.
 532    Instead either use a bounce function or add a wrapper function.
 533    Calling a f(char*) function with f(void*) is non-portable. */
 534 typedef void (make_cleanup_ftype) (void *);
 535
 536 extern struct cleanup *make_cleanup (make_cleanup_ftype *, void *);
 537
 538 extern struct cleanup *make_cleanup_freeargv (char **);
 539
 540 struct ui_file;
 541 extern struct cleanup *make_cleanup_ui_file_delete (struct ui_file *);
 542
 543 extern struct cleanup *make_cleanup_close (int fd);
 544
 545 extern struct cleanup *make_cleanup_bfd_close (bfd *abfd);
 546
 547 extern struct cleanup *make_final_cleanup (make_cleanup_ftype *, void *);
 548
 549 extern struct cleanup *make_my_cleanup (struct cleanup **,
 550                                         make_cleanup_ftype *, void *);
 551
 552 extern struct cleanup *make_run_cleanup (make_cleanup_ftype *, void *);
 553
 554 extern struct cleanup *make_exec_cleanup (make_cleanup_ftype *, void *);
 555 extern struct cleanup *make_exec_error_cleanup (make_cleanup_ftype *, void *);
 556
 557 extern struct cleanup *save_cleanups (void);
 558 extern struct cleanup *save_final_cleanups (void);
 559 extern struct cleanup *save_my_cleanups (struct cleanup **);
 560
 561 extern void restore_cleanups (struct cleanup *);
 562 extern void restore_final_cleanups (struct cleanup *);
 563 extern void restore_my_cleanups (struct cleanup **, struct cleanup *);
 564
 565 extern void free_current_contents (void *);
 566
 567 extern void null_cleanup (void *);
 568
 569 extern int myread (int, char *, int);
 570
 571 extern int query (char *, ...) ATTR_FORMAT (printf, 1, 2);
 572
 573 extern void init_page_info (void);
 574
 575 extern CORE_ADDR host_pointer_to_address (void *ptr);
 576 extern void *address_to_host_pointer (CORE_ADDR addr);
 577
 578 extern char *gdb_realpath (const char *);
 579
 580 /* From demangle.c */
 581
 582 extern void set_demangling_style (char *);
 583
 584 /* From tm.h */
 585
 586 struct type;
 587 typedef int (use_struct_convention_fn) (int gcc_p, struct type * value_type);
 588 extern use_struct_convention_fn generic_use_struct_convention;
 589
 590 typedef unsigned char *(breakpoint_from_pc_fn) (CORE_ADDR * pcptr, int *lenptr);
 591 \f
 592 /* Annotation stuff.  */
 593
 594 extern int annotation_level;    /* in stack.c */
 595 \f
 596 extern void begin_line (void);
 597
 598 extern void wrap_here (char *);
 599
 600 extern void reinitialize_more_filter (void);
 601
 602 /* Normal results */
 603 extern struct ui_file *gdb_stdout;
 604 /* Serious error notifications */
 605 extern struct ui_file *gdb_stderr;
 606 /* Log/debug/trace messages that should bypass normal stdout/stderr
 607    filtering.  For momement, always call this stream using
 608    *_unfiltered. In the very near future that restriction shall be
 609    removed - either call shall be unfiltered. (cagney 1999-06-13). */
 610 extern struct ui_file *gdb_stdlog;
 611 /* Target output that should bypass normal stdout/stderr filtering.
 612    For momement, always call this stream using *_unfiltered. In the
 613    very near future that restriction shall be removed - either call
 614    shall be unfiltered. (cagney 1999-07-02). */
 615 extern struct ui_file *gdb_stdtarg;
 616
 617 #if defined(TUI)
 618 #include "tui.h"
 619 #endif
 620
 621 #include "ui-file.h"
 622
 623 /* More generic printf like operations.  Filtered versions may return
 624    non-locally on error.  */
 625
 626 extern void fputs_filtered (const char *, struct ui_file *);
 627
 628 extern void fputs_unfiltered (const char *, struct ui_file *);
 629
 630 extern int fputc_filtered (int c, struct ui_file *);
 631
 632 extern int fputc_unfiltered (int c, struct ui_file *);
 633
 634 extern int putchar_filtered (int c);
 635
 636 extern int putchar_unfiltered (int c);
 637
 638 extern void puts_filtered (const char *);
 639
 640 extern void puts_unfiltered (const char *);
 641
 642 extern void puts_debug (char *prefix, char *string, char *suffix);
 643
 644 extern void vprintf_filtered (const char *, va_list) ATTR_FORMAT (printf, 1, 0);
 645
 646 extern void vfprintf_filtered (struct ui_file *, const char *, va_list) ATTR_FORMAT (printf, 2, 0);
 647
 648 extern void fprintf_filtered (struct ui_file *, const char *, ...) ATTR_FORMAT (printf, 2, 3);
 649
 650 extern void fprintfi_filtered (int, struct ui_file *, const char *, ...) ATTR_FORMAT (printf, 3, 4);
 651
 652 extern void printf_filtered (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 653
 654 extern void printfi_filtered (int, const char *, ...) ATTR_FORMAT (printf, 2, 3);
 655
 656 extern void vprintf_unfiltered (const char *, va_list) ATTR_FORMAT (printf, 1, 0);
 657
 658 extern void vfprintf_unfiltered (struct ui_file *, const char *, va_list) ATTR_FORMAT (printf, 2, 0);
 659
 660 extern void fprintf_unfiltered (struct ui_file *, const char *, ...) ATTR_FORMAT (printf, 2, 3);
 661
 662 extern void printf_unfiltered (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 663
 664 extern void print_spaces (int, struct ui_file *);
 665
 666 extern void print_spaces_filtered (int, struct ui_file *);
 667
 668 extern char *n_spaces (int);
 669
 670 extern void fputstr_filtered (const char *str, int quotr, struct ui_file * stream);
 671
 672 extern void fputstr_unfiltered (const char *str, int quotr, struct ui_file * stream);
 673
 674 extern void fputstrn_unfiltered (const char *str, int n, int quotr, struct ui_file * stream);
 675
 676 /* Display the host ADDR on STREAM formatted as ``0x%x''. */
 677 extern void gdb_print_host_address (void *addr, struct ui_file *stream);
 678
 679 /* Convert a CORE_ADDR into a HEX string.  paddr() is like %08lx.
 680    paddr_nz() is like %lx.  paddr_u() is like %lu. paddr_width() is
 681    for ``%*''. */
 682 extern int strlen_paddr (void);
 683 extern char *paddr (CORE_ADDR addr);
 684 extern char *paddr_nz (CORE_ADDR addr);
 685 extern char *paddr_u (CORE_ADDR addr);
 686 extern char *paddr_d (LONGEST addr);
 687
 688 extern char *phex (ULONGEST l, int sizeof_l);
 689 extern char *phex_nz (ULONGEST l, int sizeof_l);
 690
 691 /* Like paddr() only print/scan raw CORE_ADDR.  The output from
 692    core_addr_to_string() can be passed direct to
 693    string_to_core_addr().  */
 694 extern const char *core_addr_to_string (const CORE_ADDR addr);
 695 extern const char *core_addr_to_string_nz (const CORE_ADDR addr);
 696 extern CORE_ADDR string_to_core_addr (const char *my_string);
 697
 698 extern void fprintf_symbol_filtered (struct ui_file *, char *,
 699                                      enum language, int);
 700
 701 extern NORETURN void perror_with_name (char *) ATTR_NORETURN;
 702
 703 extern void print_sys_errmsg (char *, int);
 704
 705 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 706    "const char *" in unistd.h, so we can't declare the argument
 707    as "char *".  */
 708
 709 extern char *re_comp (const char *);
 710
 711 /* From symfile.c */
 712
 713 extern void symbol_file_command (char *, int);
 714
 715 /* Remote targets may wish to use this as their load function.  */
 716 extern void generic_load (char *name, int from_tty);
 717
 718 /* Summarise a download */
 719 extern void print_transfer_performance (struct ui_file *stream,
 720                                         unsigned long data_count,
 721                                         unsigned long write_count,
 722                                         unsigned long time_count);
 723
 724 /* From top.c */
 725
 726 typedef void initialize_file_ftype (void);
 727
 728 extern char *skip_quoted (char *);
 729
 730 extern char *gdb_readline (char *);
 731
 732 extern char *command_line_input (char *, int, char *);
 733
 734 extern void print_prompt (void);
 735
 736 extern int input_from_terminal_p (void);
 737
 738 extern int info_verbose;
 739
 740 /* From printcmd.c */
 741
 742 extern void set_next_address (CORE_ADDR);
 743
 744 extern void print_address_symbolic (CORE_ADDR, struct ui_file *, int,
 745                                     char *);
 746
 747 extern int build_address_symbolic (CORE_ADDR addr,
 748                                    int do_demangle,
 749                                    char **name,
 750                                    int *offset,
 751                                    char **filename,
 752                                    int *line,
 753                                    int *unmapped);
 754
 755 extern void print_address_numeric (CORE_ADDR, int, struct ui_file *);
 756
 757 extern void print_address (CORE_ADDR, struct ui_file *);
 758
 759 /* From source.c */
 760
 761 extern int openp (const char *, int, const char *, int, int, char **);
 762
 763 extern int source_full_path_of (char *, char **);
 764
 765 extern void mod_path (char *, char **);
 766
 767 extern void directory_command (char *, int);
 768
 769 extern void init_source_path (void);
 770
 771 extern char *symtab_to_filename (struct symtab *);
 772
 773 /* From exec.c */
 774
 775 extern void exec_set_section_offsets (bfd_signed_vma text_off,
 776                                       bfd_signed_vma data_off,
 777                                       bfd_signed_vma bss_off);
 778
 779 /* Take over the 'find_mapped_memory' vector from exec.c. */
 780 extern void exec_set_find_memory_regions (int (*) (int (*) (CORE_ADDR,
 781                                                             unsigned long,
 782                                                             int, int, int,
 783                                                             void *),
 784                                                    void *));
 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 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 991    FIXME: Assumes 2's complement arithmetic */
 992
 993 #if !defined (UINT_MAX)
 994 #define UINT_MAX ((unsigned int)(~0))   /* 0xFFFFFFFF for 32-bits */
 995 #endif
 996
 997 #if !defined (INT_MAX)
 998 #define INT_MAX ((int)(UINT_MAX >> 1))  /* 0x7FFFFFFF for 32-bits */
 999 #endif
1000
1001 #if !defined (INT_MIN)
1002 #define INT_MIN ((int)((int) ~0 ^ INT_MAX))     /* 0x80000000 for 32-bits */
1003 #endif
1004
1005 #if !defined (ULONG_MAX)
1006 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
1007 #endif
1008
1009 #if !defined (LONG_MAX)
1010 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
1011 #endif
1012
1013 #if !defined (ULONGEST_MAX)
1014 #define ULONGEST_MAX (~(ULONGEST)0)        /* 0xFFFFFFFFFFFFFFFF for 64-bits */
1015 #endif
1016
1017 #if !defined (LONGEST_MAX)                 /* 0x7FFFFFFFFFFFFFFF for 64-bits */
1018 #define LONGEST_MAX ((LONGEST)(ULONGEST_MAX >> 1))
1019 #endif
1020
1021 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
1022    arguments to a function, number in a value history, register number, etc.)
1023    where the value must not be larger than can fit in an int.  */
1024
1025 extern int longest_to_int (LONGEST);
1026
1027 /* Assorted functions we can declare, now that const and volatile are
1028    defined.  */
1029
1030 extern char *savestring (const char *, size_t);
1031
1032 extern char *msavestring (void *, const char *, size_t);
1033
1034 extern char *mstrsave (void *, const char *);
1035
1036 /* Robust versions of same.  Throw an internal error when no memory,
1037    guard against stray NULL arguments. */
1038 extern void *xmmalloc (void *md, size_t size);
1039 extern void *xmrealloc (void *md, void *ptr, size_t size);
1040 extern void *xmcalloc (void *md, size_t number, size_t size);
1041 extern void xmfree (void *md, void *ptr);
1042
1043 /* xmalloc(), xrealloc() and xcalloc() have already been declared in
1044    "libiberty.h". */
1045 extern void xfree (void *);
1046
1047 /* Like asprintf/vasprintf but get an internal_error if the call
1048    fails. */
1049 extern void xasprintf (char **ret, const char *format, ...) ATTR_FORMAT (printf, 2, 3);
1050 extern void xvasprintf (char **ret, const char *format, va_list ap);
1051
1052 extern int parse_escape (char **);
1053
1054 /* Message to be printed before the error message, when an error occurs.  */
1055
1056 extern char *error_pre_print;
1057
1058 /* Message to be printed before the error message, when an error occurs.  */
1059
1060 extern char *quit_pre_print;
1061
1062 /* Message to be printed before the warning message, when a warning occurs.  */
1063
1064 extern char *warning_pre_print;
1065
1066 extern NORETURN void verror (const char *fmt, va_list ap) ATTR_NORETURN;
1067
1068 extern NORETURN void error (const char *fmt, ...) ATTR_NORETURN;
1069
1070 extern NORETURN void error_stream (struct ui_file *) ATTR_NORETURN;
1071
1072 /* Returns a freshly allocate buffer containing the last error
1073    message.  */
1074 extern char *error_last_message (void);
1075
1076 extern NORETURN void internal_verror (const char *file, int line,
1077                                       const char *, va_list ap) ATTR_NORETURN;
1078
1079 extern NORETURN void internal_error (const char *file, int line,
1080                                      const char *, ...) ATTR_NORETURN ATTR_FORMAT (printf, 3, 4);
1081
1082 extern NORETURN void nomem (long) ATTR_NORETURN;
1083
1084 /* Reasons for calling throw_exception().  NOTE: all reason values
1085    must be less than zero.  enum value 0 is reserved for internal use
1086    as the return value from an initial setjmp().  The function
1087    catch_exceptions() reserves values >= 0 as legal results from its
1088    wrapped function.  */
1089
1090 enum return_reason
1091   {
1092     /* User interrupt.  */
1093     RETURN_QUIT = -2,
1094     /* Any other error.  */
1095     RETURN_ERROR
1096   };
1097
1098 #define ALL_CLEANUPS    ((struct cleanup *)0)
1099
1100 #define RETURN_MASK(reason)     (1 << (int)(-reason))
1101 #define RETURN_MASK_QUIT        RETURN_MASK (RETURN_QUIT)
1102 #define RETURN_MASK_ERROR       RETURN_MASK (RETURN_ERROR)
1103 #define RETURN_MASK_ALL         (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
1104 typedef int return_mask;
1105
1106 /* Throw an exception of type RETURN_REASON.  Will execute a LONG JUMP
1107    to the inner most containing exception handler established using
1108    catch_exceptions() (or the legacy catch_errors()).
1109
1110    Code normally throws an exception using error() et.al.  For various
1111    reaons, GDB also contains code that throws an exception directly.
1112    For instance, the remote*.c targets contain CNTRL-C signal handlers
1113    that propogate the QUIT event up the exception chain.  ``This could
1114    be a good thing or a dangerous thing.'' -- the Existential Wombat.  */
1115
1116 extern NORETURN void throw_exception (enum return_reason) ATTR_NORETURN;
1117
1118 /* Call FUNC(UIOUT, FUNC_ARGS) but wrapped within an exception
1119    handler.  If an exception (enum return_reason) is thrown using
1120    throw_exception() than all cleanups installed since
1121    catch_exceptions() was entered are invoked, the (-ve) exception
1122    value is then returned by catch_exceptions.  If FUNC() returns
1123    normally (with a postive or zero return value) then that value is
1124    returned by catch_exceptions().  It is an internal_error() for
1125    FUNC() to return a negative value.
1126
1127    For the period of the FUNC() call: UIOUT is installed as the output
1128    builder; ERRSTRING is installed as the error/quit message; and a
1129    new cleanup_chain is established.  The old values are restored
1130    before catch_exceptions() returns.
1131
1132    FIXME; cagney/2001-08-13: The need to override the global UIOUT
1133    builder variable should just go away.
1134
1135    This function superseeds catch_errors().
1136
1137    This function uses SETJMP() and LONGJUMP().  */
1138
1139 struct ui_out;
1140 typedef int (catch_exceptions_ftype) (struct ui_out *ui_out, void *args);
1141 extern int catch_exceptions (struct ui_out *uiout,
1142                              catch_exceptions_ftype *func, void *func_args,
1143                              char *errstring, return_mask mask);
1144
1145 /* If CATCH_ERRORS_FTYPE throws an error, catch_errors() returns zero
1146    otherwize the result from CATCH_ERRORS_FTYPE is returned. It is
1147    probably useful for CATCH_ERRORS_FTYPE to always return a non-zero
1148    value. It's unfortunate that, catch_errors() does not return an
1149    indication of the exact exception that it caught - quit_flag might
1150    help.
1151
1152    This function is superseeded by catch_exceptions().  */
1153
1154 typedef int (catch_errors_ftype) (PTR);
1155 extern int catch_errors (catch_errors_ftype *, PTR, char *, return_mask);
1156
1157 /* Template to catch_errors() that wraps calls to command
1158    functions. */
1159
1160 typedef void (catch_command_errors_ftype) (char *, int);
1161 extern int catch_command_errors (catch_command_errors_ftype *func, char *command, int from_tty, return_mask);
1162
1163 extern void warning (const char *, ...) ATTR_FORMAT (printf, 1, 2);
1164
1165 extern void vwarning (const char *, va_list args);
1166
1167 /* Global functions from other, non-gdb GNU thingies.
1168    Libiberty thingies are no longer declared here.  We include libiberty.h
1169    above, instead.  */
1170
1171 #ifndef GETENV_PROVIDED
1172 extern char *getenv (const char *);
1173 #endif
1174
1175 /* From other system libraries */
1176
1177 #ifdef HAVE_STDDEF_H
1178 #include <stddef.h>
1179 #endif
1180
1181 #ifdef HAVE_STDLIB_H
1182 #include <stdlib.h>
1183 #endif
1184 #ifndef min
1185 #define min(a, b) ((a) < (b) ? (a) : (b))
1186 #endif
1187 #ifndef max
1188 #define max(a, b) ((a) > (b) ? (a) : (b))
1189 #endif
1190
1191
1192 /* We take the address of fclose later, but some stdio's forget
1193    to declare this.  We can't always declare it since there's
1194    no way to declare the parameters without upsetting some compiler
1195    somewhere. */
1196
1197 #ifndef FCLOSE_PROVIDED
1198 extern int fclose (FILE *);
1199 #endif
1200
1201 #ifndef atof
1202 extern double atof (const char *);      /* X3.159-1989  4.10.1.1 */
1203 #endif
1204
1205 /* Various possibilities for alloca.  */
1206 #ifndef alloca
1207 #ifdef __GNUC__
1208 #define alloca __builtin_alloca
1209 #else /* Not GNU C */
1210 #ifdef HAVE_ALLOCA_H
1211 #include <alloca.h>
1212 #else
1213 #ifdef _AIX
1214 #pragma alloca
1215 #else
1216
1217 /* We need to be careful not to declare this in a way which conflicts with
1218    bison.  Bison never declares it as char *, but under various circumstances
1219    (like __hpux) we need to use void *.  */
1220 extern void *alloca ();
1221 #endif /* Not _AIX */
1222 #endif /* Not HAVE_ALLOCA_H */
1223 #endif /* Not GNU C */
1224 #endif /* alloca not defined */
1225
1226 /* Dynamic target-system-dependent parameters for GDB. */
1227 #include "gdbarch.h"
1228 #if (GDB_MULTI_ARCH == 0)
1229 /* Multi-arch targets _should_ be including "arch-utils.h" directly
1230    into their *-tdep.c file.  This is a prop to help old non-
1231    multi-arch targets to continue to compile. */
1232 #include "arch-utils.h"
1233 #endif
1234
1235 /* Static target-system-dependent parameters for GDB. */
1236
1237 /* Number of bits in a char or unsigned char for the target machine.
1238    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
1239 #if !defined (TARGET_CHAR_BIT)
1240 #define TARGET_CHAR_BIT 8
1241 #endif
1242
1243 /* If we picked up a copy of CHAR_BIT from a configuration file
1244    (which may get it by including <limits.h>) then use it to set
1245    the number of bits in a host char.  If not, use the same size
1246    as the target. */
1247
1248 #if defined (CHAR_BIT)
1249 #define HOST_CHAR_BIT CHAR_BIT
1250 #else
1251 #define HOST_CHAR_BIT TARGET_CHAR_BIT
1252 #endif
1253
1254 /* The bit byte-order has to do just with numbering of bits in
1255    debugging symbols and such.  Conceptually, it's quite separate
1256    from byte/word byte order.  */
1257
1258 #if !defined (BITS_BIG_ENDIAN)
1259 #define BITS_BIG_ENDIAN (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
1260 #endif
1261
1262 /* In findvar.c.  */
1263
1264 extern LONGEST extract_signed_integer (void *, int);
1265
1266 extern ULONGEST extract_unsigned_integer (void *, int);
1267
1268 extern int extract_long_unsigned_integer (void *, int, LONGEST *);
1269
1270 extern CORE_ADDR extract_address (void *, int);
1271
1272 extern CORE_ADDR extract_typed_address (void *buf, struct type *type);
1273
1274 extern void store_signed_integer (void *, int, LONGEST);
1275
1276 extern void store_unsigned_integer (void *, int, ULONGEST);
1277
1278 extern void store_address (void *, int, LONGEST);
1279
1280 extern void store_typed_address (void *buf, struct type *type, CORE_ADDR addr);
1281
1282 \f
1283 /* From valops.c */
1284
1285 extern CORE_ADDR push_bytes (CORE_ADDR, char *, int);
1286
1287 extern CORE_ADDR push_word (CORE_ADDR, ULONGEST);
1288
1289 extern int watchdog;
1290
1291 /* Hooks for alternate command interfaces.  */
1292
1293 /* The name of the interpreter if specified on the command line. */
1294 extern char *interpreter_p;
1295
1296 /* If a given interpreter matches INTERPRETER_P then it should update
1297    command_loop_hook and init_ui_hook with the per-interpreter
1298    implementation. */
1299 /* FIXME: command_loop_hook and init_ui_hook should be moved here. */
1300
1301 struct target_waitstatus;
1302 struct cmd_list_element;
1303
1304 /* Should the asynchronous variant of the interpreter (using the
1305    event-loop) be enabled? */
1306 extern int event_loop_p;
1307
1308 extern void (*init_ui_hook) (char *argv0);
1309 extern void (*command_loop_hook) (void);
1310 extern void (*show_load_progress) (const char *section,
1311                                    unsigned long section_sent,
1312                                    unsigned long section_size,
1313                                    unsigned long total_sent,
1314                                    unsigned long total_size);
1315 extern void (*print_frame_info_listing_hook) (struct symtab * s,
1316                                               int line, int stopline,
1317                                               int noerror);
1318 extern struct frame_info *parse_frame_specification (char *frame_exp);
1319 extern int (*query_hook) (const char *, va_list);
1320 extern void (*warning_hook) (const char *, va_list);
1321 extern void (*flush_hook) (struct ui_file * stream);
1322 extern void (*create_breakpoint_hook) (struct breakpoint * b);
1323 extern void (*delete_breakpoint_hook) (struct breakpoint * bpt);
1324 extern void (*modify_breakpoint_hook) (struct breakpoint * bpt);
1325 extern void (*interactive_hook) (void);
1326 extern void (*registers_changed_hook) (void);
1327 extern void (*readline_begin_hook) (char *,...);
1328 extern char *(*readline_hook) (char *);
1329 extern void (*readline_end_hook) (void);
1330 extern void (*register_changed_hook) (int regno);
1331 extern void (*memory_changed_hook) (CORE_ADDR addr, int len);
1332 extern void (*context_hook) (int);
1333 extern ptid_t (*target_wait_hook) (ptid_t ptid,
1334                                          struct target_waitstatus * status);
1335
1336 extern void (*attach_hook) (void);
1337 extern void (*detach_hook) (void);
1338 extern void (*call_command_hook) (struct cmd_list_element * c,
1339                                   char *cmd, int from_tty);
1340
1341 extern void (*set_hook) (struct cmd_list_element * c);
1342
1343 extern NORETURN void (*error_hook) (void) ATTR_NORETURN;
1344
1345 extern void (*error_begin_hook) (void);
1346
1347 extern int (*ui_load_progress_hook) (const char *section, unsigned long num);
1348
1349
1350 /* Inhibit window interface if non-zero. */
1351
1352 extern int use_windows;
1353
1354 /* Symbolic definitions of filename-related things.  */
1355 /* FIXME, this doesn't work very well if host and executable
1356    filesystems conventions are different.  */
1357
1358 #ifndef DIRNAME_SEPARATOR
1359 #define DIRNAME_SEPARATOR ':'
1360 #endif
1361
1362 #ifndef SLASH_STRING
1363 #define SLASH_STRING "/"
1364 #endif
1365
1366 #ifdef __MSDOS__
1367 # define CANT_FORK
1368 # define GLOBAL_CURDIR
1369 #endif
1370
1371 /* Provide default definitions of PIDGET, TIDGET, and MERGEPID.
1372    The name ``TIDGET'' is a historical accident.  Many uses of TIDGET
1373    in the code actually refer to a lightweight process id, i.e,
1374    something that can be considered a process id in its own right for
1375    certain purposes.  */
1376
1377 #ifndef PIDGET
1378 #define PIDGET(PTID) (ptid_get_pid (PTID))
1379 #define TIDGET(PTID) (ptid_get_lwp (PTID))
1380 #define MERGEPID(PID, TID) ptid_build (PID, TID, 0)
1381 #endif
1382
1383 /* Define well known filenos if the system does not define them.  */
1384 #ifndef STDIN_FILENO
1385 #define STDIN_FILENO   0
1386 #endif
1387 #ifndef STDOUT_FILENO
1388 #define STDOUT_FILENO  1
1389 #endif
1390 #ifndef STDERR_FILENO
1391 #define STDERR_FILENO  2
1392 #endif
1393
1394 /* If this definition isn't overridden by the header files, assume
1395    that isatty and fileno exist on this system.  */
1396 #ifndef ISATTY
1397 #define ISATTY(FP)      (isatty (fileno (FP)))
1398 #endif
1399
1400 #endif /* #ifndef DEFS_H */