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
 223 /* in printcmd.c */
 224 extern void print_value_flags PARAMS ((struct type *));
 225 \f
 226 extern void
 227 begin_line PARAMS ((void));
 228
 229 extern void
 230 wrap_here PARAMS ((char *));
 231
 232 extern void
 233 reinitialize_more_filter PARAMS ((void));
 234
 235 typedef FILE GDB_FILE;
 236 #define gdb_stdout stdout
 237 #define gdb_stderr stderr
 238
 239 extern int
 240 print_insn PARAMS ((CORE_ADDR, GDB_FILE *));
 241
 242 extern void
 243 gdb_flush PARAMS ((GDB_FILE *));
 244
 245 extern GDB_FILE *
 246 gdb_fopen PARAMS ((char * name, char * mode));
 247
 248 extern void
 249 fputs_filtered PARAMS ((const char *, GDB_FILE *));
 250
 251 extern void
 252 fputs_unfiltered PARAMS ((const char *, GDB_FILE *));
 253
 254 extern void
 255 fputc_unfiltered PARAMS ((int, GDB_FILE *));
 256
 257 extern void
 258 putc_unfiltered PARAMS ((int));
 259
 260 #define putchar_unfiltered(C)  putc_unfiltered(C)
 261
 262 extern void
 263 puts_filtered PARAMS ((char *));
 264
 265 extern void
 266 puts_unfiltered PARAMS ((char *));
 267
 268 extern void
 269 vprintf_filtered ();
 270
 271 extern void
 272 vfprintf_filtered ();
 273
 274 extern void
 275 fprintf_filtered ();
 276
 277 extern void
 278 fprintfi_filtered ();
 279
 280 extern void
 281 printf_filtered ();
 282
 283 extern void
 284 printfi_filtered ();
 285
 286 extern void
 287 vprintf_unfiltered ();
 288
 289 extern void
 290 vfprintf_unfiltered ();
 291
 292 extern void
 293 fprintf_unfiltered ();
 294
 295 extern void
 296 printf_unfiltered ();
 297
 298 extern void
 299 print_spaces PARAMS ((int, GDB_FILE *));
 300
 301 extern void
 302 print_spaces_filtered PARAMS ((int, GDB_FILE *));
 303
 304 extern char *
 305 n_spaces PARAMS ((int));
 306
 307 extern void
 308 gdb_printchar PARAMS ((int, GDB_FILE *, int));
 309
 310 /* Print a host address.  */
 311 extern void gdb_print_address PARAMS ((void *, GDB_FILE *));
 312
 313 extern void
 314 fprintf_symbol_filtered PARAMS ((GDB_FILE *, char *, enum language, int));
 315
 316 extern void
 317 perror_with_name PARAMS ((char *));
 318
 319 extern void
 320 print_sys_errmsg PARAMS ((char *, int));
 321
 322 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 323    "const char *" in unistd.h, so we can't declare the argument
 324    as "char *".  */
 325
 326 extern char *
 327 re_comp PARAMS ((const char *));
 328
 329 /* From symfile.c */
 330
 331 extern void
 332 symbol_file_command PARAMS ((char *, int));
 333
 334 /* From main.c */
 335
 336 extern char *
 337 skip_quoted PARAMS ((char *));
 338
 339 extern char *
 340 gdb_readline PARAMS ((char *));
 341
 342 extern char *
 343 command_line_input PARAMS ((char *, int));
 344
 345 extern void
 346 print_prompt PARAMS ((void));
 347
 348 extern int
 349 batch_mode PARAMS ((void));
 350
 351 extern int
 352 input_from_terminal_p PARAMS ((void));
 353
 354 /* From printcmd.c */
 355
 356 extern void
 357 set_next_address PARAMS ((CORE_ADDR));
 358
 359 extern void
 360 print_address_symbolic PARAMS ((CORE_ADDR, GDB_FILE *, int, char *));
 361
 362 extern void
 363 print_address_numeric PARAMS ((CORE_ADDR, GDB_FILE *));
 364
 365 extern void
 366 print_address PARAMS ((CORE_ADDR, GDB_FILE *));
 367
 368 /* From source.c */
 369
 370 extern int
 371 openp PARAMS ((char *, int, char *, int, int, char **));
 372
 373 extern void
 374 mod_path PARAMS ((char *, char **));
 375
 376 extern void
 377 directory_command PARAMS ((char *, int));
 378
 379 extern void
 380 init_source_path PARAMS ((void));
 381
 382 /* From findvar.c */
 383
 384 extern int
 385 read_relative_register_raw_bytes PARAMS ((int, char *));
 386
 387 /* From readline (but not in any readline .h files).  */
 388
 389 extern char *
 390 tilde_expand PARAMS ((char *));
 391
 392 /* Structure for saved commands lines
 393    (for breakpoints, defined commands, etc).  */
 394
 395 struct command_line
 396 {
 397   struct command_line *next;
 398   char *line;
 399 };
 400
 401 extern struct command_line *
 402 read_command_lines PARAMS ((void));
 403
 404 extern void
 405 free_command_lines PARAMS ((struct command_line **));
 406
 407 /* String containing the current directory (what getwd would return).  */
 408
 409 extern char *current_directory;
 410
 411 /* Default radixes for input and output.  Only some values supported.  */
 412 extern unsigned input_radix;
 413 extern unsigned output_radix;
 414
 415 /* Possibilities for prettyprint parameters to routines which print
 416    things.  Like enum language, this should be in value.h, but needs
 417    to be here for the same reason.  FIXME:  If we can eliminate this
 418    as an arg to LA_VAL_PRINT, then we can probably move it back to
 419    value.h. */
 420
 421 enum val_prettyprint
 422 {
 423   Val_no_prettyprint = 0,
 424   Val_prettyprint,
 425   /* Use the default setting which the user has specified.  */
 426   Val_pretty_default
 427 };
 428
 429 \f
 430 /* Host machine definition.  This will be a symlink to one of the
 431    xm-*.h files, built by the `configure' script.  */
 432
 433 #include "xm.h"
 434
 435 /* Native machine support.  This will be a symlink to one of the
 436    nm-*.h files, built by the `configure' script.  */
 437
 438 #include "nm.h"
 439
 440 /* If the xm.h file did not define the mode string used to open the
 441    files, assume that binary files are opened the same way as text
 442    files */
 443 #ifndef FOPEN_RB
 444 #include "fopen-same.h"
 445 #endif
 446
 447 /*
 448  * Allow things in gdb to be declared "const".  If compiling ANSI, it
 449  * just works.  If compiling with gcc but non-ansi, redefine to __const__.
 450  * If non-ansi, non-gcc, then eliminate "const" entirely, making those
 451  * objects be read-write rather than read-only.
 452  */
 453
 454 #ifndef const
 455 #ifndef __STDC__
 456 # ifdef __GNUC__
 457 #  define const __const__
 458 # else
 459 #  define const /*nothing*/
 460 # endif /* GNUC */
 461 #endif /* STDC */
 462 #endif /* const */
 463
 464 #ifndef volatile
 465 #ifndef __STDC__
 466 # ifdef __GNUC__
 467 #  define volatile __volatile__
 468 # else
 469 #  define volatile /*nothing*/
 470 # endif /* GNUC */
 471 #endif /* STDC */
 472 #endif /* volatile */
 473
 474 #if 1
 475 #define NORETURN /*nothing*/
 476 #else /* not 1 */
 477 /* FIXME: This is bogus.  Having "volatile void" mean a function doesn't
 478    return is a gcc extension and should be based on #ifdef __GNUC__.
 479    Also, as of Sep 93 I'm told gcc is changing the syntax for ansi
 480    reasons (so declaring exit here as "volatile void" and as "void" in
 481    a system header loses).  Using the new "__attributes__ ((noreturn));"
 482    syntax would lose for old versions of gcc; using
 483      typedef void exit_fn_type PARAMS ((int));
 484      volatile exit_fn_type exit;
 485    would win.  */
 486 /* Some compilers (many AT&T SVR4 compilers for instance), do not accept
 487    declarations of functions that never return (exit for instance) as
 488    "volatile void".  For such compilers "NORETURN" can be defined away
 489    to keep them happy */
 490
 491 #ifndef NORETURN
 492 # ifdef __lucid
 493 #   define NORETURN /*nothing*/
 494 # else
 495 #   define NORETURN volatile
 496 # endif
 497 #endif
 498 #endif /* not 1 */
 499
 500 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).  */
 501
 502 #if !defined (UINT_MAX)
 503 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 504 #endif
 505
 506 #if !defined (INT_MAX)
 507 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 508 #endif
 509
 510 #if !defined (INT_MIN)
 511 #define INT_MIN (-INT_MAX - 1)                  /* 0x80000000 for 32-bits */
 512 #endif
 513
 514 #if !defined (ULONG_MAX)
 515 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 516 #endif
 517
 518 #if !defined (LONG_MAX)
 519 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 520 #endif
 521
 522 #ifdef BFD64
 523
 524 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
 525
 526 #define LONGEST BFD_HOST_64_BIT
 527
 528 #else /* No BFD64 */
 529
 530 /* If all compilers for this host support "long long" and we want to
 531    use it for LONGEST (the performance hit is about 10% on a testsuite
 532    run based on one DECstation test), then the xm.h file can define
 533    CC_HAS_LONG_LONG.
 534
 535    Using GCC 1.39 on BSDI with long long causes about 700 new
 536    testsuite failures.  Using long long for LONGEST on the DECstation
 537    causes 3 new FAILs in the testsuite and many heuristic fencepost
 538    warnings.  These are not investigated, but a first guess would be
 539    that the BSDI problems are GCC bugs in long long support and the
 540    latter are GDB bugs.  */
 541
 542 #ifndef CC_HAS_LONG_LONG
 543 #  if defined (__GNUC__) && defined (FORCE_LONG_LONG)
 544 #    define CC_HAS_LONG_LONG 1
 545 #  endif
 546 #endif
 547
 548 /* LONGEST should not be a typedef, because "unsigned LONGEST" needs to work.
 549    CC_HAS_LONG_LONG is defined if the host compiler supports "long long"
 550    variables and we wish to make use of that support.  */
 551
 552 #ifndef LONGEST
 553 #  ifdef CC_HAS_LONG_LONG
 554 #    define LONGEST long long
 555 #  else
 556 #    define LONGEST long
 557 #  endif
 558 #endif
 559
 560 #endif /* No BFD64 */
 561
 562 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 563    arguments to a function, number in a value history, register number, etc.)
 564    where the value must not be larger than can fit in an int.  */
 565
 566 extern int longest_to_int PARAMS ((LONGEST));
 567
 568 /* Assorted functions we can declare, now that const and volatile are
 569    defined.  */
 570
 571 extern char *
 572 savestring PARAMS ((const char *, int));
 573
 574 extern char *
 575 msavestring PARAMS ((void *, const char *, int));
 576
 577 extern char *
 578 strsave PARAMS ((const char *));
 579
 580 extern char *
 581 mstrsave PARAMS ((void *, const char *));
 582
 583 extern char *
 584 concat PARAMS ((char *, ...));
 585
 586 extern PTR
 587 xmalloc PARAMS ((long));
 588
 589 extern PTR
 590 xrealloc PARAMS ((PTR, long));
 591
 592 extern PTR
 593 xmmalloc PARAMS ((PTR, long));
 594
 595 extern PTR
 596 xmrealloc PARAMS ((PTR, PTR, long));
 597
 598 extern PTR
 599 mmalloc PARAMS ((PTR, long));
 600
 601 extern PTR
 602 mrealloc PARAMS ((PTR, PTR, long));
 603
 604 extern void
 605 mfree PARAMS ((PTR, PTR));
 606
 607 extern int
 608 mmcheck PARAMS ((PTR, void (*) (void)));
 609
 610 extern int
 611 mmtrace PARAMS ((void));
 612
 613 extern int
 614 parse_escape PARAMS ((char **));
 615
 616 extern const char * const reg_names[];
 617
 618 /* Message to be printed before the error message, when an error occurs.  */
 619
 620 extern char *error_pre_print;
 621
 622 /* Message to be printed before the warning message, when a warning occurs.  */
 623
 624 extern char *warning_pre_print;
 625
 626 extern NORETURN void                    /* Does not return to the caller.  */
 627 error ();
 628
 629 extern NORETURN void                    /* Does not return to the caller.  */
 630 fatal ();
 631
 632 extern NORETURN void                    /* Not specified as volatile in ... */
 633 exit PARAMS ((int));                    /* 4.10.4.3 */
 634
 635 extern NORETURN void                    /* Does not return to the caller.  */
 636 nomem PARAMS ((long));
 637
 638 /* Reasons for calling return_to_top_level.  */
 639 enum return_reason {
 640   /* User interrupt.  */
 641   RETURN_QUIT,
 642
 643   /* Any other error.  */
 644   RETURN_ERROR
 645 };
 646
 647 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 648 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 649 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 650 typedef int return_mask;
 651
 652 extern NORETURN void                    /* Does not return to the caller.  */
 653 return_to_top_level PARAMS ((enum return_reason));
 654
 655 extern int catch_errors PARAMS ((int (*) (char *), void *, char *,
 656                                  return_mask));
 657
 658 extern void
 659 warning_setup PARAMS ((void));
 660
 661 extern void
 662 warning ();
 663
 664 /* Global functions from other, non-gdb GNU thingies (libiberty for
 665    instance) */
 666
 667 extern char *
 668 basename PARAMS ((char *));
 669
 670 extern char *
 671 getenv PARAMS ((const char *));
 672
 673 extern char **
 674 buildargv PARAMS ((char *));
 675
 676 extern void
 677 freeargv PARAMS ((char **));
 678
 679 extern char *
 680 strerrno PARAMS ((int));
 681
 682 extern char *
 683 strsigno PARAMS ((int));
 684
 685 extern int
 686 errno_max PARAMS ((void));
 687
 688 extern int
 689 signo_max PARAMS ((void));
 690
 691 extern int
 692 strtoerrno PARAMS ((char *));
 693
 694 extern int
 695 strtosigno PARAMS ((char *));
 696
 697 extern char *
 698 strsignal PARAMS ((int));
 699
 700 /* From other system libraries */
 701
 702 #ifndef PSIGNAL_IN_SIGNAL_H
 703 extern void
 704 psignal PARAMS ((unsigned, const char *));
 705 #endif
 706
 707 /* For now, we can't include <stdlib.h> because it conflicts with
 708    "../include/getopt.h".  (FIXME)
 709
 710    However, if a function is defined in the ANSI C standard and a prototype
 711    for that function is defined and visible in any header file in an ANSI
 712    conforming environment, then that prototype must match the definition in
 713    the ANSI standard.  So we can just duplicate them here without conflict,
 714    since they must be the same in all conforming ANSI environments.  If
 715    these cause problems, then the environment is not ANSI conformant. */
 716
 717 #ifdef __STDC__
 718 #include <stddef.h>
 719 #endif
 720
 721 extern int
 722 fclose PARAMS ((GDB_FILE *stream));                             /* 4.9.5.1 */
 723
 724 extern void
 725 perror PARAMS ((const char *));                         /* 4.9.10.4 */
 726
 727 extern double
 728 atof PARAMS ((const char *nptr));                       /* 4.10.1.1 */
 729
 730 extern int
 731 atoi PARAMS ((const char *));                           /* 4.10.1.2 */
 732
 733 #ifndef MALLOC_INCOMPATIBLE
 734
 735 extern PTR
 736 malloc PARAMS ((size_t size));                          /* 4.10.3.3 */
 737
 738 extern PTR
 739 realloc PARAMS ((void *ptr, size_t size));              /* 4.10.3.4 */
 740
 741 extern void
 742 free PARAMS ((void *));                                 /* 4.10.3.2 */
 743
 744 #endif  /* MALLOC_INCOMPATIBLE */
 745
 746 extern void
 747 qsort PARAMS ((void *base, size_t nmemb,                /* 4.10.5.2 */
 748                size_t size,
 749                int (*compar)(const void *, const void *)));
 750
 751 #ifndef MEM_FNS_DECLARED        /* Some non-ANSI use void *, not char *.  */
 752 extern PTR
 753 memcpy PARAMS ((void *, const void *, size_t));         /* 4.11.2.1 */
 754
 755 extern int
 756 memcmp PARAMS ((const void *, const void *, size_t));   /* 4.11.4.1 */
 757 #endif
 758
 759 extern char *
 760 strchr PARAMS ((const char *, int));                    /* 4.11.5.2 */
 761
 762 extern char *
 763 strrchr PARAMS ((const char *, int));                   /* 4.11.5.5 */
 764
 765 extern char *
 766 strstr PARAMS ((const char *, const char *));           /* 4.11.5.7 */
 767
 768 extern char *
 769 strtok PARAMS ((char *, const char *));                 /* 4.11.5.8 */
 770
 771 #ifndef MEM_FNS_DECLARED        /* Some non-ANSI use void *, not char *.  */
 772 extern PTR
 773 memset PARAMS ((void *, int, size_t));                  /* 4.11.6.1 */
 774 #endif
 775
 776 extern char *
 777 strerror PARAMS ((int));                                /* 4.11.6.2 */
 778
 779 /* Various possibilities for alloca.  */
 780 #ifndef alloca
 781 # ifdef __GNUC__
 782 #  define alloca __builtin_alloca
 783 # else /* Not GNU C */
 784 #  ifdef sparc
 785 #   include <alloca.h>          /* NOTE:  Doesn't declare alloca() */
 786 #  endif
 787
 788 /* We need to be careful not to declare this in a way which conflicts with
 789    bison.  Bison never declares it as char *, but under various circumstances
 790    (like __hpux) we need to use void *.  */
 791 #  if defined (__STDC__) || defined (__hpux)
 792    extern void *alloca ();
 793 #  else /* Don't use void *.  */
 794    extern char *alloca ();
 795 #  endif /* Don't use void *.  */
 796 # endif /* Not GNU C */
 797 #endif /* alloca not defined */
 798
 799 /* TARGET_BYTE_ORDER and HOST_BYTE_ORDER must be defined to one of these.  */
 800
 801 #if !defined (BIG_ENDIAN)
 802 #define BIG_ENDIAN 4321
 803 #endif
 804
 805 #if !defined (LITTLE_ENDIAN)
 806 #define LITTLE_ENDIAN 1234
 807 #endif
 808
 809 /* Target-system-dependent parameters for GDB. */
 810
 811 /* Target machine definition.  This will be a symlink to one of the
 812    tm-*.h files, built by the `configure' script.  */
 813
 814 #include "tm.h"
 815
 816 /* Number of bits in a char or unsigned char for the target machine.
 817    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 818 #if !defined (TARGET_CHAR_BIT)
 819 #define TARGET_CHAR_BIT 8
 820 #endif
 821
 822 /* Number of bits in a short or unsigned short for the target machine. */
 823 #if !defined (TARGET_SHORT_BIT)
 824 #define TARGET_SHORT_BIT (2 * TARGET_CHAR_BIT)
 825 #endif
 826
 827 /* Number of bits in an int or unsigned int for the target machine. */
 828 #if !defined (TARGET_INT_BIT)
 829 #define TARGET_INT_BIT (4 * TARGET_CHAR_BIT)
 830 #endif
 831
 832 /* Number of bits in a long or unsigned long for the target machine. */
 833 #if !defined (TARGET_LONG_BIT)
 834 #define TARGET_LONG_BIT (4 * TARGET_CHAR_BIT)
 835 #endif
 836
 837 /* Number of bits in a long long or unsigned long long for the target machine. */
 838 #if !defined (TARGET_LONG_LONG_BIT)
 839 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 840 #endif
 841
 842 /* Number of bits in a float for the target machine. */
 843 #if !defined (TARGET_FLOAT_BIT)
 844 #define TARGET_FLOAT_BIT (4 * TARGET_CHAR_BIT)
 845 #endif
 846
 847 /* Number of bits in a double for the target machine. */
 848 #if !defined (TARGET_DOUBLE_BIT)
 849 #define TARGET_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 850 #endif
 851
 852 /* Number of bits in a long double for the target machine.  */
 853 #if !defined (TARGET_LONG_DOUBLE_BIT)
 854 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 855 #endif
 856
 857 /* Number of bits in a "complex" for the target machine. */
 858 #if !defined (TARGET_COMPLEX_BIT)
 859 #define TARGET_COMPLEX_BIT (2 * TARGET_FLOAT_BIT)
 860 #endif
 861
 862 /* Number of bits in a "double complex" for the target machine. */
 863 #if !defined (TARGET_DOUBLE_COMPLEX_BIT)
 864 #define TARGET_DOUBLE_COMPLEX_BIT (2 * TARGET_DOUBLE_BIT)
 865 #endif
 866
 867 /* Number of bits in a pointer for the target machine */
 868 #if !defined (TARGET_PTR_BIT)
 869 #define TARGET_PTR_BIT TARGET_INT_BIT
 870 #endif
 871
 872 /* If we picked up a copy of CHAR_BIT from a configuration file
 873    (which may get it by including <limits.h>) then use it to set
 874    the number of bits in a host char.  If not, use the same size
 875    as the target. */
 876
 877 #if defined (CHAR_BIT)
 878 #define HOST_CHAR_BIT CHAR_BIT
 879 #else
 880 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 881 #endif
 882
 883 /* The bit byte-order has to do just with numbering of bits in
 884    debugging symbols and such.  Conceptually, it's quite separate
 885    from byte/word byte order.  */
 886
 887 #if !defined (BITS_BIG_ENDIAN)
 888 #if TARGET_BYTE_ORDER == BIG_ENDIAN
 889 #define BITS_BIG_ENDIAN 1
 890 #endif /* Big endian.  */
 891
 892 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
 893 #define BITS_BIG_ENDIAN 0
 894 #endif /* Little endian.  */
 895 #endif /* BITS_BIG_ENDIAN not defined.  */
 896
 897 /* In findvar.c.  */
 898 LONGEST extract_signed_integer PARAMS ((void *, int));
 899 unsigned LONGEST extract_unsigned_integer PARAMS ((void *, int));
 900 CORE_ADDR extract_address PARAMS ((void *, int));
 901
 902 void store_signed_integer PARAMS ((void *, int, LONGEST));
 903 void store_unsigned_integer PARAMS ((void *, int, unsigned LONGEST));
 904 void store_address PARAMS ((void *, int, CORE_ADDR));
 905
 906 double extract_floating PARAMS ((void *, int));
 907 void store_floating PARAMS ((void *, int, double));
 908 \f
 909 /* On some machines there are bits in addresses which are not really
 910    part of the address, but are used by the kernel, the hardware, etc.
 911    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
 912    so we get a "real" address such as one would find in a symbol
 913    table.  This is used only for addresses of instructions, and even then
 914    I'm not sure it's used in all contexts.  It exists to deal with there
 915    being a few stray bits in the PC which would mislead us, not as some sort
 916    of generic thing to handle alignment or segmentation (it's possible it
 917    should be in TARGET_READ_PC instead).  */
 918 #if !defined (ADDR_BITS_REMOVE)
 919 #define ADDR_BITS_REMOVE(addr) (addr)
 920 #endif /* No ADDR_BITS_REMOVE.  */
 921
 922 /* From valops.c */
 923
 924 extern CORE_ADDR
 925 push_bytes PARAMS ((CORE_ADDR, char *, int));
 926
 927 extern CORE_ADDR
 928 push_word PARAMS ((CORE_ADDR, unsigned LONGEST));
 929
 930 /* Some parts of gdb might be considered optional, in the sense that they
 931    are not essential for being able to build a working, usable debugger
 932    for a specific environment.  For example, the maintenance commands
 933    are there for the benefit of gdb maintainers.  As another example,
 934    some environments really don't need gdb's that are able to read N
 935    different object file formats.  In order to make it possible (but
 936    not necessarily recommended) to build "stripped down" versions of
 937    gdb, the following defines control selective compilation of those
 938    parts of gdb which can be safely left out when necessary.  Note that
 939    the default is to include everything. */
 940
 941 #ifndef MAINTENANCE_CMDS
 942 #define MAINTENANCE_CMDS 1
 943 #endif
 944
 945 #endif /* !defined (DEFS_H) */