gdb/defs.h

   1 /* Basic, host-specific, and target-specific definitions for GDB.
   2    Copyright (C) 1986, 1989, 1991 Free Software Foundation, Inc.
   3
   4 This file is part of GDB.
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 #if !defined (DEFS_H)
  21 #define DEFS_H 1
  22
  23 #include <stdio.h>
  24
  25 /* First include ansidecl.h so we can use the various macro definitions
  26    here and in all subsequent file inclusions.  */
  27
  28 #include "ansidecl.h"
  29
  30 /* For BFD64 and bfd_vma.  */
  31 #include "bfd.h"
  32
  33 /* An address in the program being debugged.  Host byte order.  Rather
  34    than duplicate all the logic in BFD which figures out what type
  35    this is (long, long long, etc.) and whether it needs to be 64
  36    bits (the host/target interactions are subtle), we just use
  37    bfd_vma.  */
  38
  39 typedef bfd_vma CORE_ADDR;
  40
  41 #define min(a, b) ((a) < (b) ? (a) : (b))
  42 #define max(a, b) ((a) > (b) ? (a) : (b))
  43
  44 /* Gdb does *lots* of string compares.  Use macros to speed them up by
  45    avoiding function calls if the first characters are not the same. */
  46
  47 #define STRCMP(a,b) (*(a) == *(b) ? strcmp ((a), (b)) : (int)*(a) - (int)*(b))
  48 #define STREQ(a,b) (*(a) == *(b) ? !strcmp ((a), (b)) : 0)
  49 #define STREQN(a,b,c) (*(a) == *(b) ? !strncmp ((a), (b), (c)) : 0)
  50
  51 /* The character GNU C++ uses to build identifiers that must be unique from
  52    the program's identifiers (such as $this and $$vptr).  */
  53 #define CPLUS_MARKER '$'        /* May be overridden to '.' for SysV */
  54
  55 #include <errno.h>              /* System call error return status */
  56
  57 extern int quit_flag;
  58 extern int immediate_quit;
  59 extern int sevenbit_strings;
  60
  61 extern void
  62 quit PARAMS ((void));
  63
  64 #define QUIT { if (quit_flag) quit (); }
  65
  66 /* Command classes are top-level categories into which commands are broken
  67    down for "help" purposes.
  68    Notes on classes: class_alias is for alias commands which are not
  69    abbreviations of the original command.  class-pseudo is for commands
  70    which are not really commands nor help topics ("stop").  */
  71
  72 enum command_class
  73 {
  74   /* Special args to help_list */
  75   all_classes = -2, all_commands = -1,
  76   /* Classes of commands */
  77   no_class = -1, class_run = 0, class_vars, class_stack,
  78   class_files, class_support, class_info, class_breakpoint,
  79   class_alias, class_obscure, class_user, class_maintenance,
  80   class_pseudo
  81 };
  82
  83 /* Languages represented in the symbol table and elsewhere.
  84    This should probably be in language.h, but since enum's can't
  85    be forward declared to satisfy opaque references before their
  86    actual definition, needs to be here. */
  87
  88 enum language
  89 {
  90    language_unknown,            /* Language not known */
  91    language_auto,               /* Placeholder for automatic setting */
  92    language_c,                  /* C */
  93    language_cplus,              /* C++ */
  94    language_chill,              /* Chill */
  95    language_m2                  /* Modula-2 */
  96 };
  97
  98 /* the cleanup list records things that have to be undone
  99    if an error happens (descriptors to be closed, memory to be freed, etc.)
 100    Each link in the chain records a function to call and an
 101    argument to give it.
 102
 103    Use make_cleanup to add an element to the cleanup chain.
 104    Use do_cleanups to do all cleanup actions back to a given
 105    point in the chain.  Use discard_cleanups to remove cleanups
 106    from the chain back to a given point, not doing them.  */
 107
 108 struct cleanup
 109 {
 110   struct cleanup *next;
 111   void (*function) PARAMS ((PTR));
 112   PTR arg;
 113 };
 114
 115 /* From blockframe.c */
 116
 117 extern int
 118 inside_entry_func PARAMS ((CORE_ADDR));
 119
 120 extern int
 121 inside_entry_file PARAMS ((CORE_ADDR addr));
 122
 123 extern int
 124 inside_main_func PARAMS ((CORE_ADDR pc));
 125
 126 /* From ch-lang.c, for the moment. (FIXME) */
 127
 128 extern char *
 129 chill_demangle PARAMS ((const char *));
 130
 131 /* From libiberty.a */
 132
 133 extern char *
 134 cplus_demangle PARAMS ((const char *, int));
 135
 136 extern char *
 137 cplus_mangle_opname PARAMS ((char *, int));
 138
 139 /* From libmmalloc.a (memory mapped malloc library) */
 140
 141 extern PTR
 142 mmalloc_attach PARAMS ((int, PTR));
 143
 144 extern PTR
 145 mmalloc_detach PARAMS ((PTR));
 146
 147 extern PTR
 148 mmalloc PARAMS ((PTR, long));
 149
 150 extern PTR
 151 mrealloc PARAMS ((PTR, PTR, long));
 152
 153 extern void
 154 mfree PARAMS ((PTR, PTR));
 155
 156 extern int
 157 mmalloc_setkey PARAMS ((PTR, int, PTR));
 158
 159 extern PTR
 160 mmalloc_getkey PARAMS ((PTR, int));
 161
 162 /* From utils.c */
 163
 164 extern int
 165 strcmp_iw PARAMS ((const char *, const char *));
 166
 167 extern char *
 168 safe_strerror PARAMS ((int));
 169
 170 extern char *
 171 safe_strsignal PARAMS ((int));
 172
 173 extern void
 174 init_malloc PARAMS ((void *));
 175
 176 extern void
 177 request_quit PARAMS ((int));
 178
 179 extern void
 180 do_cleanups PARAMS ((struct cleanup *));
 181
 182 extern void
 183 discard_cleanups PARAMS ((struct cleanup *));
 184
 185 /* The bare make_cleanup function is one of those rare beasts that
 186    takes almost any type of function as the first arg and anything that
 187    will fit in a "void *" as the second arg.
 188
 189    Should be, once all calls and called-functions are cleaned up:
 190 extern struct cleanup *
 191 make_cleanup PARAMS ((void (*function) (void *), void *));
 192
 193    Until then, lint and/or various type-checking compiler options will
 194    complain about make_cleanup calls.  It'd be wrong to just cast things,
 195    since the type actually passed when the function is called would be
 196    wrong.  */
 197
 198 extern struct cleanup *
 199 make_cleanup ();
 200
 201 extern struct cleanup *
 202 save_cleanups PARAMS ((void));
 203
 204 extern void
 205 restore_cleanups PARAMS ((struct cleanup *));
 206
 207 extern void
 208 free_current_contents PARAMS ((char **));
 209
 210 extern void
 211 null_cleanup PARAMS ((char **));
 212
 213 extern int
 214 myread PARAMS ((int, char *, int));
 215
 216 extern int
 217 query ();
 218 \f
 219 /* Annotation stuff.  */
 220
 221 extern int annotation_level; /* in stack.c */
 222 \f
 223 extern void
 224 begin_line PARAMS ((void));
 225
 226 extern void
 227 wrap_here PARAMS ((char *));
 228
 229 extern void
 230 reinitialize_more_filter PARAMS ((void));
 231
 232 typedef FILE GDB_FILE;
 233 #define gdb_stdout stdout
 234 #define gdb_stderr stderr
 235
 236 extern int
 237 print_insn PARAMS ((CORE_ADDR, GDB_FILE *));
 238
 239 extern void
 240 gdb_flush PARAMS ((GDB_FILE *));
 241
 242 extern GDB_FILE *
 243 gdb_fopen PARAMS ((char * name, char * mode));
 244
 245 extern void
 246 fputs_filtered PARAMS ((const char *, GDB_FILE *));
 247
 248 extern void
 249 fputs_unfiltered PARAMS ((const char *, GDB_FILE *));
 250
 251 extern void
 252 fputc_unfiltered PARAMS ((int, GDB_FILE *));
 253
 254 extern void
 255 putc_unfiltered PARAMS ((int));
 256
 257 #define putchar_unfiltered(C)  putc_unfiltered(C)
 258
 259 extern void
 260 puts_filtered PARAMS ((char *));
 261
 262 extern void
 263 puts_unfiltered PARAMS ((char *));
 264
 265 extern void
 266 vprintf_filtered ();
 267
 268 extern void
 269 vfprintf_filtered ();
 270
 271 extern void
 272 fprintf_filtered ();
 273
 274 extern void
 275 fprintfi_filtered ();
 276
 277 extern void
 278 printf_filtered ();
 279
 280 extern void
 281 printfi_filtered ();
 282
 283 extern void
 284 vprintf_unfiltered ();
 285
 286 extern void
 287 vfprintf_unfiltered ();
 288
 289 extern void
 290 fprintf_unfiltered ();
 291
 292 extern void
 293 printf_unfiltered ();
 294
 295 extern void
 296 print_spaces PARAMS ((int, GDB_FILE *));
 297
 298 extern void
 299 print_spaces_filtered PARAMS ((int, GDB_FILE *));
 300
 301 extern char *
 302 n_spaces PARAMS ((int));
 303
 304 extern void
 305 gdb_printchar PARAMS ((int, GDB_FILE *, int));
 306
 307 /* Print a host address.  */
 308 extern void gdb_print_address PARAMS ((void *, GDB_FILE *));
 309
 310 extern void
 311 fprintf_symbol_filtered PARAMS ((GDB_FILE *, char *, enum language, int));
 312
 313 extern void
 314 perror_with_name PARAMS ((char *));
 315
 316 extern void
 317 print_sys_errmsg PARAMS ((char *, int));
 318
 319 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 320    "const char *" in unistd.h, so we can't declare the argument
 321    as "char *".  */
 322
 323 extern char *
 324 re_comp PARAMS ((const char *));
 325
 326 /* From symfile.c */
 327
 328 extern void
 329 symbol_file_command PARAMS ((char *, int));
 330
 331 /* From main.c */
 332
 333 extern char *
 334 skip_quoted PARAMS ((char *));
 335
 336 extern char *
 337 gdb_readline PARAMS ((char *));
 338
 339 extern char *
 340 command_line_input PARAMS ((char *, int, char *));
 341
 342 extern void
 343 print_prompt PARAMS ((void));
 344
 345 extern int
 346 batch_mode PARAMS ((void));
 347
 348 extern int
 349 input_from_terminal_p PARAMS ((void));
 350
 351 /* From printcmd.c */
 352
 353 extern void
 354 set_next_address PARAMS ((CORE_ADDR));
 355
 356 extern void
 357 print_address_symbolic PARAMS ((CORE_ADDR, GDB_FILE *, int, char *));
 358
 359 extern void
 360 print_address_numeric PARAMS ((CORE_ADDR, GDB_FILE *));
 361
 362 extern void
 363 print_address PARAMS ((CORE_ADDR, GDB_FILE *));
 364
 365 /* From source.c */
 366
 367 extern int
 368 openp PARAMS ((char *, int, char *, int, int, char **));
 369
 370 extern void
 371 mod_path PARAMS ((char *, char **));
 372
 373 extern void
 374 directory_command PARAMS ((char *, int));
 375
 376 extern void
 377 init_source_path PARAMS ((void));
 378
 379 /* From findvar.c */
 380
 381 extern int
 382 read_relative_register_raw_bytes PARAMS ((int, char *));
 383
 384 /* From readline (but not in any readline .h files).  */
 385
 386 extern char *
 387 tilde_expand PARAMS ((char *));
 388
 389 /* Structure for saved commands lines
 390    (for breakpoints, defined commands, etc).  */
 391
 392 struct command_line
 393 {
 394   struct command_line *next;
 395   char *line;
 396 };
 397
 398 extern struct command_line *
 399 read_command_lines PARAMS ((void));
 400
 401 extern void
 402 free_command_lines PARAMS ((struct command_line **));
 403
 404 /* String containing the current directory (what getwd would return).  */
 405
 406 extern char *current_directory;
 407
 408 /* Default radixes for input and output.  Only some values supported.  */
 409 extern unsigned input_radix;
 410 extern unsigned output_radix;
 411
 412 /* Possibilities for prettyprint parameters to routines which print
 413    things.  Like enum language, this should be in value.h, but needs
 414    to be here for the same reason.  FIXME:  If we can eliminate this
 415    as an arg to LA_VAL_PRINT, then we can probably move it back to
 416    value.h. */
 417
 418 enum val_prettyprint
 419 {
 420   Val_no_prettyprint = 0,
 421   Val_prettyprint,
 422   /* Use the default setting which the user has specified.  */
 423   Val_pretty_default
 424 };
 425
 426 \f
 427 /* Host machine definition.  This will be a symlink to one of the
 428    xm-*.h files, built by the `configure' script.  */
 429
 430 #include "xm.h"
 431
 432 /* Native machine support.  This will be a symlink to one of the
 433    nm-*.h files, built by the `configure' script.  */
 434
 435 #include "nm.h"
 436
 437 /* If the xm.h file did not define the mode string used to open the
 438    files, assume that binary files are opened the same way as text
 439    files */
 440 #ifndef FOPEN_RB
 441 #include "fopen-same.h"
 442 #endif
 443
 444 /*
 445  * Allow things in gdb to be declared "const".  If compiling ANSI, it
 446  * just works.  If compiling with gcc but non-ansi, redefine to __const__.
 447  * If non-ansi, non-gcc, then eliminate "const" entirely, making those
 448  * objects be read-write rather than read-only.
 449  */
 450
 451 #ifndef const
 452 #ifndef __STDC__
 453 # ifdef __GNUC__
 454 #  define const __const__
 455 # else
 456 #  define const /*nothing*/
 457 # endif /* GNUC */
 458 #endif /* STDC */
 459 #endif /* const */
 460
 461 #ifndef volatile
 462 #ifndef __STDC__
 463 # ifdef __GNUC__
 464 #  define volatile __volatile__
 465 # else
 466 #  define volatile /*nothing*/
 467 # endif /* GNUC */
 468 #endif /* STDC */
 469 #endif /* volatile */
 470
 471 #if 1
 472 #define NORETURN /*nothing*/
 473 #else /* not 1 */
 474 /* FIXME: This is bogus.  Having "volatile void" mean a function doesn't
 475    return is a gcc extension and should be based on #ifdef __GNUC__.
 476    Also, as of Sep 93 I'm told gcc is changing the syntax for ansi
 477    reasons (so declaring exit here as "volatile void" and as "void" in
 478    a system header loses).  Using the new "__attributes__ ((noreturn));"
 479    syntax would lose for old versions of gcc; using
 480      typedef void exit_fn_type PARAMS ((int));
 481      volatile exit_fn_type exit;
 482    would win.  */
 483 /* Some compilers (many AT&T SVR4 compilers for instance), do not accept
 484    declarations of functions that never return (exit for instance) as
 485    "volatile void".  For such compilers "NORETURN" can be defined away
 486    to keep them happy */
 487
 488 #ifndef NORETURN
 489 # ifdef __lucid
 490 #   define NORETURN /*nothing*/
 491 # else
 492 #   define NORETURN volatile
 493 # endif
 494 #endif
 495 #endif /* not 1 */
 496
 497 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).  */
 498
 499 #if !defined (UINT_MAX)
 500 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 501 #endif
 502
 503 #if !defined (INT_MAX)
 504 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 505 #endif
 506
 507 #if !defined (INT_MIN)
 508 #define INT_MIN (-INT_MAX - 1)                  /* 0x80000000 for 32-bits */
 509 #endif
 510
 511 #if !defined (ULONG_MAX)
 512 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 513 #endif
 514
 515 #if !defined (LONG_MAX)
 516 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 517 #endif
 518
 519 #ifdef BFD64
 520
 521 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
 522
 523 #define LONGEST BFD_HOST_64_BIT
 524
 525 #else /* No BFD64 */
 526
 527 /* If all compilers for this host support "long long" and we want to
 528    use it for LONGEST (the performance hit is about 10% on a testsuite
 529    run based on one DECstation test), then the xm.h file can define
 530    CC_HAS_LONG_LONG.
 531
 532    Using GCC 1.39 on BSDI with long long causes about 700 new
 533    testsuite failures.  Using long long for LONGEST on the DECstation
 534    causes 3 new FAILs in the testsuite and many heuristic fencepost
 535    warnings.  These are not investigated, but a first guess would be
 536    that the BSDI problems are GCC bugs in long long support and the
 537    latter are GDB bugs.  */
 538
 539 #ifndef CC_HAS_LONG_LONG
 540 #  if defined (__GNUC__) && defined (FORCE_LONG_LONG)
 541 #    define CC_HAS_LONG_LONG 1
 542 #  endif
 543 #endif
 544
 545 /* LONGEST should not be a typedef, because "unsigned LONGEST" needs to work.
 546    CC_HAS_LONG_LONG is defined if the host compiler supports "long long"
 547    variables and we wish to make use of that support.  */
 548
 549 #ifndef LONGEST
 550 #  ifdef CC_HAS_LONG_LONG
 551 #    define LONGEST long long
 552 #  else
 553 #    define LONGEST long
 554 #  endif
 555 #endif
 556
 557 #endif /* No BFD64 */
 558
 559 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 560    arguments to a function, number in a value history, register number, etc.)
 561    where the value must not be larger than can fit in an int.  */
 562
 563 extern int longest_to_int PARAMS ((LONGEST));
 564
 565 /* Assorted functions we can declare, now that const and volatile are
 566    defined.  */
 567
 568 extern char *
 569 savestring PARAMS ((const char *, int));
 570
 571 extern char *
 572 msavestring PARAMS ((void *, const char *, int));
 573
 574 extern char *
 575 strsave PARAMS ((const char *));
 576
 577 extern char *
 578 mstrsave PARAMS ((void *, const char *));
 579
 580 extern char *
 581 concat PARAMS ((char *, ...));
 582
 583 extern PTR
 584 xmalloc PARAMS ((long));
 585
 586 extern PTR
 587 xrealloc PARAMS ((PTR, long));
 588
 589 extern PTR
 590 xmmalloc PARAMS ((PTR, long));
 591
 592 extern PTR
 593 xmrealloc PARAMS ((PTR, PTR, long));
 594
 595 extern PTR
 596 mmalloc PARAMS ((PTR, long));
 597
 598 extern PTR
 599 mrealloc PARAMS ((PTR, PTR, long));
 600
 601 extern void
 602 mfree PARAMS ((PTR, PTR));
 603
 604 extern int
 605 mmcheck PARAMS ((PTR, void (*) (void)));
 606
 607 extern int
 608 mmtrace PARAMS ((void));
 609
 610 extern int
 611 parse_escape PARAMS ((char **));
 612
 613 extern const char * const reg_names[];
 614
 615 /* Message to be printed before the error message, when an error occurs.  */
 616
 617 extern char *error_pre_print;
 618
 619 /* Message to be printed before the warning message, when a warning occurs.  */
 620
 621 extern char *warning_pre_print;
 622
 623 extern NORETURN void                    /* Does not return to the caller.  */
 624 error ();
 625
 626 extern void error_begin PARAMS ((void));
 627
 628 extern NORETURN void                    /* Does not return to the caller.  */
 629 fatal ();
 630
 631 extern NORETURN void                    /* Not specified as volatile in ... */
 632 exit PARAMS ((int));                    /* 4.10.4.3 */
 633
 634 extern NORETURN void                    /* Does not return to the caller.  */
 635 nomem PARAMS ((long));
 636
 637 /* Reasons for calling return_to_top_level.  */
 638 enum return_reason {
 639   /* User interrupt.  */
 640   RETURN_QUIT,
 641
 642   /* Any other error.  */
 643   RETURN_ERROR
 644 };
 645
 646 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 647 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 648 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 649 typedef int return_mask;
 650
 651 extern NORETURN void                    /* Does not return to the caller.  */
 652 return_to_top_level PARAMS ((enum return_reason));
 653
 654 extern int catch_errors PARAMS ((int (*) (char *), void *, char *,
 655                                  return_mask));
 656
 657 extern void
 658 warning_setup PARAMS ((void));
 659
 660 extern void
 661 warning ();
 662
 663 /* Global functions from other, non-gdb GNU thingies (libiberty for
 664    instance) */
 665
 666 extern char *
 667 basename PARAMS ((char *));
 668
 669 extern char *
 670 getenv PARAMS ((const char *));
 671
 672 extern char **
 673 buildargv PARAMS ((char *));
 674
 675 extern void
 676 freeargv PARAMS ((char **));
 677
 678 extern char *
 679 strerrno PARAMS ((int));
 680
 681 extern char *
 682 strsigno PARAMS ((int));
 683
 684 extern int
 685 errno_max PARAMS ((void));
 686
 687 extern int
 688 signo_max PARAMS ((void));
 689
 690 extern int
 691 strtoerrno PARAMS ((char *));
 692
 693 extern int
 694 strtosigno PARAMS ((char *));
 695
 696 extern char *
 697 strsignal PARAMS ((int));
 698
 699 /* From other system libraries */
 700
 701 #ifndef PSIGNAL_IN_SIGNAL_H
 702 extern void
 703 psignal PARAMS ((unsigned, const char *));
 704 #endif
 705
 706 /* For now, we can't include <stdlib.h> because it conflicts with
 707    "../include/getopt.h".  (FIXME)
 708
 709    However, if a function is defined in the ANSI C standard and a prototype
 710    for that function is defined and visible in any header file in an ANSI
 711    conforming environment, then that prototype must match the definition in
 712    the ANSI standard.  So we can just duplicate them here without conflict,
 713    since they must be the same in all conforming ANSI environments.  If
 714    these cause problems, then the environment is not ANSI conformant. */
 715
 716 #ifdef __STDC__
 717 #include <stddef.h>
 718 #endif
 719
 720 extern int
 721 fclose PARAMS ((GDB_FILE *stream));                             /* 4.9.5.1 */
 722
 723 extern void
 724 perror PARAMS ((const char *));                         /* 4.9.10.4 */
 725
 726 extern double
 727 atof PARAMS ((const char *nptr));                       /* 4.10.1.1 */
 728
 729 extern int
 730 atoi PARAMS ((const char *));                           /* 4.10.1.2 */
 731
 732 #ifndef MALLOC_INCOMPATIBLE
 733
 734 extern PTR
 735 malloc PARAMS ((size_t size));                          /* 4.10.3.3 */
 736
 737 extern PTR
 738 realloc PARAMS ((void *ptr, size_t size));              /* 4.10.3.4 */
 739
 740 extern void
 741 free PARAMS ((void *));                                 /* 4.10.3.2 */
 742
 743 #endif  /* MALLOC_INCOMPATIBLE */
 744
 745 extern void
 746 qsort PARAMS ((void *base, size_t nmemb,                /* 4.10.5.2 */
 747                size_t size,
 748                int (*compar)(const void *, const void *)));
 749
 750 #ifndef MEM_FNS_DECLARED        /* Some non-ANSI use void *, not char *.  */
 751 extern PTR
 752 memcpy PARAMS ((void *, const void *, size_t));         /* 4.11.2.1 */
 753
 754 extern int
 755 memcmp PARAMS ((const void *, const void *, size_t));   /* 4.11.4.1 */
 756 #endif
 757
 758 extern char *
 759 strchr PARAMS ((const char *, int));                    /* 4.11.5.2 */
 760
 761 extern char *
 762 strrchr PARAMS ((const char *, int));                   /* 4.11.5.5 */
 763
 764 extern char *
 765 strstr PARAMS ((const char *, const char *));           /* 4.11.5.7 */
 766
 767 extern char *
 768 strtok PARAMS ((char *, const char *));                 /* 4.11.5.8 */
 769
 770 #ifndef MEM_FNS_DECLARED        /* Some non-ANSI use void *, not char *.  */
 771 extern PTR
 772 memset PARAMS ((void *, int, size_t));                  /* 4.11.6.1 */
 773 #endif
 774
 775 extern char *
 776 strerror PARAMS ((int));                                /* 4.11.6.2 */
 777
 778 /* Various possibilities for alloca.  */
 779 #ifndef alloca
 780 # ifdef __GNUC__
 781 #  define alloca __builtin_alloca
 782 # else /* Not GNU C */
 783 #  ifdef sparc
 784 #   include <alloca.h>          /* NOTE:  Doesn't declare alloca() */
 785 #  endif
 786
 787 /* We need to be careful not to declare this in a way which conflicts with
 788    bison.  Bison never declares it as char *, but under various circumstances
 789    (like __hpux) we need to use void *.  */
 790 #  if defined (__STDC__) || defined (__hpux)
 791    extern void *alloca ();
 792 #  else /* Don't use void *.  */
 793    extern char *alloca ();
 794 #  endif /* Don't use void *.  */
 795 # endif /* Not GNU C */
 796 #endif /* alloca not defined */
 797
 798 /* TARGET_BYTE_ORDER and HOST_BYTE_ORDER must be defined to one of these.  */
 799
 800 #if !defined (BIG_ENDIAN)
 801 #define BIG_ENDIAN 4321
 802 #endif
 803
 804 #if !defined (LITTLE_ENDIAN)
 805 #define LITTLE_ENDIAN 1234
 806 #endif
 807
 808 /* Target-system-dependent parameters for GDB. */
 809
 810 /* Target machine definition.  This will be a symlink to one of the
 811    tm-*.h files, built by the `configure' script.  */
 812
 813 #include "tm.h"
 814
 815 /* Number of bits in a char or unsigned char for the target machine.
 816    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 817 #if !defined (TARGET_CHAR_BIT)
 818 #define TARGET_CHAR_BIT 8
 819 #endif
 820
 821 /* Number of bits in a short or unsigned short for the target machine. */
 822 #if !defined (TARGET_SHORT_BIT)
 823 #define TARGET_SHORT_BIT (2 * TARGET_CHAR_BIT)
 824 #endif
 825
 826 /* Number of bits in an int or unsigned int for the target machine. */
 827 #if !defined (TARGET_INT_BIT)
 828 #define TARGET_INT_BIT (4 * TARGET_CHAR_BIT)
 829 #endif
 830
 831 /* Number of bits in a long or unsigned long for the target machine. */
 832 #if !defined (TARGET_LONG_BIT)
 833 #define TARGET_LONG_BIT (4 * TARGET_CHAR_BIT)
 834 #endif
 835
 836 /* Number of bits in a long long or unsigned long long for the target machine. */
 837 #if !defined (TARGET_LONG_LONG_BIT)
 838 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 839 #endif
 840
 841 /* Number of bits in a float for the target machine. */
 842 #if !defined (TARGET_FLOAT_BIT)
 843 #define TARGET_FLOAT_BIT (4 * TARGET_CHAR_BIT)
 844 #endif
 845
 846 /* Number of bits in a double for the target machine. */
 847 #if !defined (TARGET_DOUBLE_BIT)
 848 #define TARGET_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 849 #endif
 850
 851 /* Number of bits in a long double for the target machine.  */
 852 #if !defined (TARGET_LONG_DOUBLE_BIT)
 853 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 854 #endif
 855
 856 /* Number of bits in a "complex" for the target machine. */
 857 #if !defined (TARGET_COMPLEX_BIT)
 858 #define TARGET_COMPLEX_BIT (2 * TARGET_FLOAT_BIT)
 859 #endif
 860
 861 /* Number of bits in a "double complex" for the target machine. */
 862 #if !defined (TARGET_DOUBLE_COMPLEX_BIT)
 863 #define TARGET_DOUBLE_COMPLEX_BIT (2 * TARGET_DOUBLE_BIT)
 864 #endif
 865
 866 /* Number of bits in a pointer for the target machine */
 867 #if !defined (TARGET_PTR_BIT)
 868 #define TARGET_PTR_BIT TARGET_INT_BIT
 869 #endif
 870
 871 /* If we picked up a copy of CHAR_BIT from a configuration file
 872    (which may get it by including <limits.h>) then use it to set
 873    the number of bits in a host char.  If not, use the same size
 874    as the target. */
 875
 876 #if defined (CHAR_BIT)
 877 #define HOST_CHAR_BIT CHAR_BIT
 878 #else
 879 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 880 #endif
 881
 882 /* The bit byte-order has to do just with numbering of bits in
 883    debugging symbols and such.  Conceptually, it's quite separate
 884    from byte/word byte order.  */
 885
 886 #if !defined (BITS_BIG_ENDIAN)
 887 #if TARGET_BYTE_ORDER == BIG_ENDIAN
 888 #define BITS_BIG_ENDIAN 1
 889 #endif /* Big endian.  */
 890
 891 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
 892 #define BITS_BIG_ENDIAN 0
 893 #endif /* Little endian.  */
 894 #endif /* BITS_BIG_ENDIAN not defined.  */
 895
 896 /* In findvar.c.  */
 897 LONGEST extract_signed_integer PARAMS ((void *, int));
 898 unsigned LONGEST extract_unsigned_integer PARAMS ((void *, int));
 899 CORE_ADDR extract_address PARAMS ((void *, int));
 900
 901 void store_signed_integer PARAMS ((void *, int, LONGEST));
 902 void store_unsigned_integer PARAMS ((void *, int, unsigned LONGEST));
 903 void store_address PARAMS ((void *, int, CORE_ADDR));
 904
 905 double extract_floating PARAMS ((void *, int));
 906 void store_floating PARAMS ((void *, int, double));
 907 \f
 908 /* On some machines there are bits in addresses which are not really
 909    part of the address, but are used by the kernel, the hardware, etc.
 910    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
 911    so we get a "real" address such as one would find in a symbol
 912    table.  This is used only for addresses of instructions, and even then
 913    I'm not sure it's used in all contexts.  It exists to deal with there
 914    being a few stray bits in the PC which would mislead us, not as some sort
 915    of generic thing to handle alignment or segmentation (it's possible it
 916    should be in TARGET_READ_PC instead).  */
 917 #if !defined (ADDR_BITS_REMOVE)
 918 #define ADDR_BITS_REMOVE(addr) (addr)
 919 #endif /* No ADDR_BITS_REMOVE.  */
 920
 921 /* From valops.c */
 922
 923 extern CORE_ADDR
 924 push_bytes PARAMS ((CORE_ADDR, char *, int));
 925
 926 extern CORE_ADDR
 927 push_word PARAMS ((CORE_ADDR, unsigned LONGEST));
 928
 929 /* Some parts of gdb might be considered optional, in the sense that they
 930    are not essential for being able to build a working, usable debugger
 931    for a specific environment.  For example, the maintenance commands
 932    are there for the benefit of gdb maintainers.  As another example,
 933    some environments really don't need gdb's that are able to read N
 934    different object file formats.  In order to make it possible (but
 935    not necessarily recommended) to build "stripped down" versions of
 936    gdb, the following defines control selective compilation of those
 937    parts of gdb which can be safely left out when necessary.  Note that
 938    the default is to include everything. */
 939
 940 #ifndef MAINTENANCE_CMDS
 941 #define MAINTENANCE_CMDS 1
 942 #endif
 943
 944 #endif /* !defined (DEFS_H) */