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
 219 extern void
 220 begin_line PARAMS ((void));
 221
 222 extern void
 223 wrap_here PARAMS ((char *));
 224
 225 extern void
 226 reinitialize_more_filter PARAMS ((void));
 227
 228 typedef FILE GDB_FILE;
 229 #define gdb_stdout stdout
 230 #define gdb_stderr stderr
 231
 232 extern int
 233 print_insn PARAMS ((CORE_ADDR, GDB_FILE *));
 234
 235 extern void
 236 gdb_flush PARAMS ((GDB_FILE *));
 237
 238 extern GDB_FILE *
 239 gdb_fopen PARAMS ((char * name, char * mode));
 240
 241 extern void
 242 fputs_filtered PARAMS ((const char *, GDB_FILE *));
 243
 244 extern void
 245 fputs_unfiltered PARAMS ((const char *, GDB_FILE *));
 246
 247 extern void
 248 fputc_unfiltered PARAMS ((int, GDB_FILE *));
 249
 250 extern void
 251 putc_unfiltered PARAMS ((int));
 252
 253 #define putchar_unfiltered(C)  putc_unfiltered(C)
 254
 255 extern void
 256 puts_filtered PARAMS ((char *));
 257
 258 extern void
 259 puts_unfiltered PARAMS ((char *));
 260
 261 extern void
 262 vprintf_filtered ();
 263
 264 extern void
 265 vfprintf_filtered ();
 266
 267 extern void
 268 fprintf_filtered ();
 269
 270 extern void
 271 fprintfi_filtered ();
 272
 273 extern void
 274 printf_filtered ();
 275
 276 extern void
 277 printfi_filtered ();
 278
 279 extern void
 280 vprintf_unfiltered ();
 281
 282 extern void
 283 vfprintf_unfiltered ();
 284
 285 extern void
 286 fprintf_unfiltered ();
 287
 288 extern void
 289 printf_unfiltered ();
 290
 291 extern void
 292 print_spaces PARAMS ((int, GDB_FILE *));
 293
 294 extern void
 295 print_spaces_filtered PARAMS ((int, GDB_FILE *));
 296
 297 extern char *
 298 n_spaces PARAMS ((int));
 299
 300 extern void
 301 gdb_printchar PARAMS ((int, GDB_FILE *, int));
 302
 303 /* Print a host address.  */
 304 extern void gdb_print_address PARAMS ((void *, GDB_FILE *));
 305
 306 extern void
 307 fprintf_symbol_filtered PARAMS ((GDB_FILE *, char *, enum language, int));
 308
 309 extern void
 310 perror_with_name PARAMS ((char *));
 311
 312 extern void
 313 print_sys_errmsg PARAMS ((char *, int));
 314
 315 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 316    "const char *" in unistd.h, so we can't declare the argument
 317    as "char *".  */
 318
 319 extern char *
 320 re_comp PARAMS ((const char *));
 321
 322 /* From symfile.c */
 323
 324 extern void
 325 symbol_file_command PARAMS ((char *, int));
 326
 327 /* From main.c */
 328
 329 extern char *
 330 skip_quoted PARAMS ((char *));
 331
 332 extern char *
 333 gdb_readline PARAMS ((char *));
 334
 335 extern char *
 336 command_line_input PARAMS ((char *, int));
 337
 338 extern void
 339 print_prompt PARAMS ((void));
 340
 341 extern int
 342 batch_mode PARAMS ((void));
 343
 344 extern int
 345 input_from_terminal_p PARAMS ((void));
 346
 347 /* From printcmd.c */
 348
 349 extern void
 350 set_next_address PARAMS ((CORE_ADDR));
 351
 352 extern void
 353 print_address_symbolic PARAMS ((CORE_ADDR, GDB_FILE *, int, char *));
 354
 355 extern void
 356 print_address_numeric PARAMS ((CORE_ADDR, GDB_FILE *));
 357
 358 extern void
 359 print_address PARAMS ((CORE_ADDR, GDB_FILE *));
 360
 361 /* From source.c */
 362
 363 extern int
 364 openp PARAMS ((char *, int, char *, int, int, char **));
 365
 366 extern void
 367 mod_path PARAMS ((char *, char **));
 368
 369 extern void
 370 directory_command PARAMS ((char *, int));
 371
 372 extern void
 373 init_source_path PARAMS ((void));
 374
 375 /* From findvar.c */
 376
 377 extern int
 378 read_relative_register_raw_bytes PARAMS ((int, char *));
 379
 380 /* From readline (but not in any readline .h files).  */
 381
 382 extern char *
 383 tilde_expand PARAMS ((char *));
 384
 385 /* Structure for saved commands lines
 386    (for breakpoints, defined commands, etc).  */
 387
 388 struct command_line
 389 {
 390   struct command_line *next;
 391   char *line;
 392 };
 393
 394 extern struct command_line *
 395 read_command_lines PARAMS ((void));
 396
 397 extern void
 398 free_command_lines PARAMS ((struct command_line **));
 399
 400 /* String containing the current directory (what getwd would return).  */
 401
 402 extern char *current_directory;
 403
 404 /* Default radixes for input and output.  Only some values supported.  */
 405 extern unsigned input_radix;
 406 extern unsigned output_radix;
 407
 408 /* Possibilities for prettyprint parameters to routines which print
 409    things.  Like enum language, this should be in value.h, but needs
 410    to be here for the same reason.  FIXME:  If we can eliminate this
 411    as an arg to LA_VAL_PRINT, then we can probably move it back to
 412    value.h. */
 413
 414 enum val_prettyprint
 415 {
 416   Val_no_prettyprint = 0,
 417   Val_prettyprint,
 418   /* Use the default setting which the user has specified.  */
 419   Val_pretty_default
 420 };
 421
 422 \f
 423 /* Host machine definition.  This will be a symlink to one of the
 424    xm-*.h files, built by the `configure' script.  */
 425
 426 #include "xm.h"
 427
 428 /* Native machine support.  This will be a symlink to one of the
 429    nm-*.h files, built by the `configure' script.  */
 430
 431 #include "nm.h"
 432
 433 /* If the xm.h file did not define the mode string used to open the
 434    files, assume that binary files are opened the same way as text
 435    files */
 436 #ifndef FOPEN_RB
 437 #include "fopen-same.h"
 438 #endif
 439
 440 /*
 441  * Allow things in gdb to be declared "const".  If compiling ANSI, it
 442  * just works.  If compiling with gcc but non-ansi, redefine to __const__.
 443  * If non-ansi, non-gcc, then eliminate "const" entirely, making those
 444  * objects be read-write rather than read-only.
 445  */
 446
 447 #ifndef const
 448 #ifndef __STDC__
 449 # ifdef __GNUC__
 450 #  define const __const__
 451 # else
 452 #  define const /*nothing*/
 453 # endif /* GNUC */
 454 #endif /* STDC */
 455 #endif /* const */
 456
 457 #ifndef volatile
 458 #ifndef __STDC__
 459 # ifdef __GNUC__
 460 #  define volatile __volatile__
 461 # else
 462 #  define volatile /*nothing*/
 463 # endif /* GNUC */
 464 #endif /* STDC */
 465 #endif /* volatile */
 466
 467 #if 1
 468 #define NORETURN /*nothing*/
 469 #else /* not 1 */
 470 /* FIXME: This is bogus.  Having "volatile void" mean a function doesn't
 471    return is a gcc extension and should be based on #ifdef __GNUC__.
 472    Also, as of Sep 93 I'm told gcc is changing the syntax for ansi
 473    reasons (so declaring exit here as "volatile void" and as "void" in
 474    a system header loses).  Using the new "__attributes__ ((noreturn));"
 475    syntax would lose for old versions of gcc; using
 476      typedef void exit_fn_type PARAMS ((int));
 477      volatile exit_fn_type exit;
 478    would win.  */
 479 /* Some compilers (many AT&T SVR4 compilers for instance), do not accept
 480    declarations of functions that never return (exit for instance) as
 481    "volatile void".  For such compilers "NORETURN" can be defined away
 482    to keep them happy */
 483
 484 #ifndef NORETURN
 485 # ifdef __lucid
 486 #   define NORETURN /*nothing*/
 487 # else
 488 #   define NORETURN volatile
 489 # endif
 490 #endif
 491 #endif /* not 1 */
 492
 493 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).  */
 494
 495 #if !defined (UINT_MAX)
 496 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 497 #endif
 498
 499 #if !defined (INT_MAX)
 500 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 501 #endif
 502
 503 #if !defined (INT_MIN)
 504 #define INT_MIN (-INT_MAX - 1)                  /* 0x80000000 for 32-bits */
 505 #endif
 506
 507 #if !defined (ULONG_MAX)
 508 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 509 #endif
 510
 511 #if !defined (LONG_MAX)
 512 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 513 #endif
 514
 515 #ifdef BFD64
 516
 517 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
 518
 519 #define LONGEST BFD_HOST_64_TYPE
 520
 521 #else /* No BFD64 */
 522
 523 /* Default to support for "long long" if the host compiler being used is gcc.
 524    Config files must define CC_HAS_LONG_LONG to use other host compilers
 525    that are capable of supporting "long long", and to cause gdb to use that
 526    support.  Not defining CC_HAS_LONG_LONG will suppress use of "long long"
 527    regardless of what compiler is used.
 528
 529    FIXME: For now, automatic selection of "long long" as the default when
 530    gcc is used is disabled, pending further testing.  Concerns include the
 531    impact on gdb performance and the universality of bugfree long long
 532    support on platforms that do have gcc.  Compiling with FORCE_LONG_LONG
 533    will select "long long" use for testing purposes.  -fnf */
 534
 535 #ifndef CC_HAS_LONG_LONG
 536 #  if defined (__GNUC__) && defined (FORCE_LONG_LONG) /* See FIXME above */
 537 #    define CC_HAS_LONG_LONG 1
 538 #  endif
 539 #endif
 540
 541 /* LONGEST should not be a typedef, because "unsigned LONGEST" needs to work.
 542    CC_HAS_LONG_LONG is defined if the host compiler supports "long long"
 543    variables and we wish to make use of that support.  */
 544
 545 #ifndef LONGEST
 546 #  ifdef CC_HAS_LONG_LONG
 547 #    define LONGEST long long
 548 #  else
 549 #    define LONGEST long
 550 #  endif
 551 #endif
 552
 553 #endif /* No BFD64 */
 554
 555 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 556    arguments to a function, number in a value history, register number, etc.)
 557    where the value must not be larger than can fit in an int.  */
 558
 559 #define longest_to_int(x) (((x) > INT_MAX || (x) < INT_MIN) \
 560                            ? (error ("Value out of range."),0) : (int) (x))
 561
 562 /* Assorted functions we can declare, now that const and volatile are
 563    defined.  */
 564
 565 extern char *
 566 savestring PARAMS ((const char *, int));
 567
 568 extern char *
 569 msavestring PARAMS ((void *, const char *, int));
 570
 571 extern char *
 572 strsave PARAMS ((const char *));
 573
 574 extern char *
 575 mstrsave PARAMS ((void *, const char *));
 576
 577 extern char *
 578 concat PARAMS ((char *, ...));
 579
 580 extern PTR
 581 xmalloc PARAMS ((long));
 582
 583 extern PTR
 584 xrealloc PARAMS ((PTR, long));
 585
 586 extern PTR
 587 xmmalloc PARAMS ((PTR, long));
 588
 589 extern PTR
 590 xmrealloc PARAMS ((PTR, PTR, long));
 591
 592 extern PTR
 593 mmalloc PARAMS ((PTR, long));
 594
 595 extern PTR
 596 mrealloc PARAMS ((PTR, PTR, long));
 597
 598 extern void
 599 mfree PARAMS ((PTR, PTR));
 600
 601 extern int
 602 mmcheck PARAMS ((PTR, void (*) (void)));
 603
 604 extern int
 605 mmtrace PARAMS ((void));
 606
 607 extern int
 608 parse_escape PARAMS ((char **));
 609
 610 extern const char * const reg_names[];
 611
 612 /* Message to be printed before the error message, when an error occurs.  */
 613
 614 extern char *error_pre_print;
 615
 616 /* Message to be printed before the warning message, when a warning occurs.  */
 617
 618 extern char *warning_pre_print;
 619
 620 extern NORETURN void                    /* Does not return to the caller.  */
 621 error ();
 622
 623 extern NORETURN void                    /* Does not return to the caller.  */
 624 fatal ();
 625
 626 extern NORETURN void                    /* Not specified as volatile in ... */
 627 exit PARAMS ((int));                    /* 4.10.4.3 */
 628
 629 extern NORETURN void                    /* Does not return to the caller.  */
 630 nomem PARAMS ((long));
 631
 632 /* Reasons for calling return_to_top_level.  */
 633 enum return_reason {
 634   /* User interrupt.  */
 635   RETURN_QUIT,
 636
 637   /* Any other error.  */
 638   RETURN_ERROR
 639 };
 640
 641 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 642 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 643 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 644 typedef int return_mask;
 645
 646 extern NORETURN void                    /* Does not return to the caller.  */
 647 return_to_top_level PARAMS ((enum return_reason));
 648
 649 extern int catch_errors PARAMS ((int (*) (char *), void *, char *,
 650                                  return_mask));
 651
 652 extern void
 653 warning_setup PARAMS ((void));
 654
 655 extern void
 656 warning ();
 657
 658 /* Global functions from other, non-gdb GNU thingies (libiberty for
 659    instance) */
 660
 661 extern char *
 662 basename PARAMS ((char *));
 663
 664 extern char *
 665 getenv PARAMS ((const char *));
 666
 667 extern char **
 668 buildargv PARAMS ((char *));
 669
 670 extern void
 671 freeargv PARAMS ((char **));
 672
 673 extern char *
 674 strerrno PARAMS ((int));
 675
 676 extern char *
 677 strsigno PARAMS ((int));
 678
 679 extern int
 680 errno_max PARAMS ((void));
 681
 682 extern int
 683 signo_max PARAMS ((void));
 684
 685 extern int
 686 strtoerrno PARAMS ((char *));
 687
 688 extern int
 689 strtosigno PARAMS ((char *));
 690
 691 extern char *
 692 strsignal PARAMS ((int));
 693
 694 /* From other system libraries */
 695
 696 #ifndef PSIGNAL_IN_SIGNAL_H
 697 extern void
 698 psignal PARAMS ((unsigned, const char *));
 699 #endif
 700
 701 /* For now, we can't include <stdlib.h> because it conflicts with
 702    "../include/getopt.h".  (FIXME)
 703
 704    However, if a function is defined in the ANSI C standard and a prototype
 705    for that function is defined and visible in any header file in an ANSI
 706    conforming environment, then that prototype must match the definition in
 707    the ANSI standard.  So we can just duplicate them here without conflict,
 708    since they must be the same in all conforming ANSI environments.  If
 709    these cause problems, then the environment is not ANSI conformant. */
 710
 711 #ifdef __STDC__
 712 #include <stddef.h>
 713 #endif
 714
 715 extern int
 716 fclose PARAMS ((GDB_FILE *stream));                             /* 4.9.5.1 */
 717
 718 extern void
 719 perror PARAMS ((const char *));                         /* 4.9.10.4 */
 720
 721 extern double
 722 atof PARAMS ((const char *nptr));                       /* 4.10.1.1 */
 723
 724 extern int
 725 atoi PARAMS ((const char *));                           /* 4.10.1.2 */
 726
 727 #ifndef MALLOC_INCOMPATIBLE
 728
 729 extern PTR
 730 malloc PARAMS ((size_t size));                          /* 4.10.3.3 */
 731
 732 extern PTR
 733 realloc PARAMS ((void *ptr, size_t size));              /* 4.10.3.4 */
 734
 735 extern void
 736 free PARAMS ((void *));                                 /* 4.10.3.2 */
 737
 738 #endif  /* MALLOC_INCOMPATIBLE */
 739
 740 extern void
 741 qsort PARAMS ((void *base, size_t nmemb,                /* 4.10.5.2 */
 742                size_t size,
 743                int (*comp)(const void *, const void *)));
 744
 745 #ifndef MEM_FNS_DECLARED        /* Some non-ANSI use void *, not char *.  */
 746 extern PTR
 747 memcpy PARAMS ((void *, const void *, size_t));         /* 4.11.2.1 */
 748
 749 extern int
 750 memcmp PARAMS ((const void *, const void *, size_t));   /* 4.11.4.1 */
 751 #endif
 752
 753 extern char *
 754 strchr PARAMS ((const char *, int));                    /* 4.11.5.2 */
 755
 756 extern char *
 757 strrchr PARAMS ((const char *, int));                   /* 4.11.5.5 */
 758
 759 extern char *
 760 strstr PARAMS ((const char *, const char *));           /* 4.11.5.7 */
 761
 762 extern char *
 763 strtok PARAMS ((char *, const char *));                 /* 4.11.5.8 */
 764
 765 #ifndef MEM_FNS_DECLARED        /* Some non-ANSI use void *, not char *.  */
 766 extern PTR
 767 memset PARAMS ((void *, int, size_t));                  /* 4.11.6.1 */
 768 #endif
 769
 770 extern char *
 771 strerror PARAMS ((int));                                /* 4.11.6.2 */
 772
 773 /* Various possibilities for alloca.  */
 774 #ifndef alloca
 775 # ifdef __GNUC__
 776 #  define alloca __builtin_alloca
 777 # else /* Not GNU C */
 778 #  ifdef sparc
 779 #   include <alloca.h>          /* NOTE:  Doesn't declare alloca() */
 780 #  endif
 781
 782 /* We need to be careful not to declare this in a way which conflicts with
 783    bison.  Bison never declares it as char *, but under various circumstances
 784    (like __hpux) we need to use void *.  */
 785 #  if defined (__STDC__) || defined (__hpux)
 786    extern void *alloca ();
 787 #  else /* Don't use void *.  */
 788    extern char *alloca ();
 789 #  endif /* Don't use void *.  */
 790 # endif /* Not GNU C */
 791 #endif /* alloca not defined */
 792
 793 /* TARGET_BYTE_ORDER and HOST_BYTE_ORDER must be defined to one of these.  */
 794
 795 #if !defined (BIG_ENDIAN)
 796 #define BIG_ENDIAN 4321
 797 #endif
 798
 799 #if !defined (LITTLE_ENDIAN)
 800 #define LITTLE_ENDIAN 1234
 801 #endif
 802
 803 /* Target-system-dependent parameters for GDB. */
 804
 805 /* Target machine definition.  This will be a symlink to one of the
 806    tm-*.h files, built by the `configure' script.  */
 807
 808 #include "tm.h"
 809
 810 /* Number of bits in a char or unsigned char for the target machine.
 811    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 812 #if !defined (TARGET_CHAR_BIT)
 813 #define TARGET_CHAR_BIT 8
 814 #endif
 815
 816 /* Number of bits in a short or unsigned short for the target machine. */
 817 #if !defined (TARGET_SHORT_BIT)
 818 #define TARGET_SHORT_BIT (2 * TARGET_CHAR_BIT)
 819 #endif
 820
 821 /* Number of bits in an int or unsigned int for the target machine. */
 822 #if !defined (TARGET_INT_BIT)
 823 #define TARGET_INT_BIT (4 * TARGET_CHAR_BIT)
 824 #endif
 825
 826 /* Number of bits in a long or unsigned long for the target machine. */
 827 #if !defined (TARGET_LONG_BIT)
 828 #define TARGET_LONG_BIT (4 * TARGET_CHAR_BIT)
 829 #endif
 830
 831 /* Number of bits in a long long or unsigned long long for the target machine. */
 832 #if !defined (TARGET_LONG_LONG_BIT)
 833 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 834 #endif
 835
 836 /* Number of bits in a float for the target machine. */
 837 #if !defined (TARGET_FLOAT_BIT)
 838 #define TARGET_FLOAT_BIT (4 * TARGET_CHAR_BIT)
 839 #endif
 840
 841 /* Number of bits in a double for the target machine. */
 842 #if !defined (TARGET_DOUBLE_BIT)
 843 #define TARGET_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 844 #endif
 845
 846 /* Number of bits in a long double for the target machine.  */
 847 #if !defined (TARGET_LONG_DOUBLE_BIT)
 848 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 849 #endif
 850
 851 /* Number of bits in a "complex" for the target machine. */
 852 #if !defined (TARGET_COMPLEX_BIT)
 853 #define TARGET_COMPLEX_BIT (2 * TARGET_FLOAT_BIT)
 854 #endif
 855
 856 /* Number of bits in a "double complex" for the target machine. */
 857 #if !defined (TARGET_DOUBLE_COMPLEX_BIT)
 858 #define TARGET_DOUBLE_COMPLEX_BIT (2 * TARGET_DOUBLE_BIT)
 859 #endif
 860
 861 /* Number of bits in a pointer for the target machine */
 862 #if !defined (TARGET_PTR_BIT)
 863 #define TARGET_PTR_BIT TARGET_INT_BIT
 864 #endif
 865
 866 /* If we picked up a copy of CHAR_BIT from a configuration file
 867    (which may get it by including <limits.h>) then use it to set
 868    the number of bits in a host char.  If not, use the same size
 869    as the target. */
 870
 871 #if defined (CHAR_BIT)
 872 #define HOST_CHAR_BIT CHAR_BIT
 873 #else
 874 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 875 #endif
 876
 877 /* The bit byte-order has to do just with numbering of bits in
 878    debugging symbols and such.  Conceptually, it's quite separate
 879    from byte/word byte order.  */
 880
 881 #if !defined (BITS_BIG_ENDIAN)
 882 #if TARGET_BYTE_ORDER == BIG_ENDIAN
 883 #define BITS_BIG_ENDIAN 1
 884 #endif /* Big endian.  */
 885
 886 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
 887 #define BITS_BIG_ENDIAN 0
 888 #endif /* Little endian.  */
 889 #endif /* BITS_BIG_ENDIAN not defined.  */
 890
 891 /* In findvar.c.  */
 892 LONGEST extract_signed_integer PARAMS ((void *, int));
 893 unsigned LONGEST extract_unsigned_integer PARAMS ((void *, int));
 894 CORE_ADDR extract_address PARAMS ((void *, int));
 895
 896 void store_signed_integer PARAMS ((void *, int, LONGEST));
 897 void store_unsigned_integer PARAMS ((void *, int, unsigned LONGEST));
 898 void store_address PARAMS ((void *, int, CORE_ADDR));
 899
 900 double extract_floating PARAMS ((void *, int));
 901 void store_floating PARAMS ((void *, int, double));
 902 \f
 903 /* On some machines there are bits in addresses which are not really
 904    part of the address, but are used by the kernel, the hardware, etc.
 905    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
 906    so we get a "real" address such as one would find in a symbol
 907    table.  This is used only for addresses of instructions, and even then
 908    I'm not sure it's used in all contexts.  It exists to deal with there
 909    being a few stray bits in the PC which would mislead us, not as some sort
 910    of generic thing to handle alignment or segmentation (it's possible it
 911    should be in TARGET_READ_PC instead).  */
 912 #if !defined (ADDR_BITS_REMOVE)
 913 #define ADDR_BITS_REMOVE(addr) (addr)
 914 #endif /* No ADDR_BITS_REMOVE.  */
 915
 916 /* From valops.c */
 917
 918 extern CORE_ADDR
 919 push_bytes PARAMS ((CORE_ADDR, char *, int));
 920
 921 extern CORE_ADDR
 922 push_word PARAMS ((CORE_ADDR, unsigned LONGEST));
 923
 924 /* Some parts of gdb might be considered optional, in the sense that they
 925    are not essential for being able to build a working, usable debugger
 926    for a specific environment.  For example, the maintenance commands
 927    are there for the benefit of gdb maintainers.  As another example,
 928    some environments really don't need gdb's that are able to read N
 929    different object file formats.  In order to make it possible (but
 930    not necessarily recommended) to build "stripped down" versions of
 931    gdb, the following defines control selective compilation of those
 932    parts of gdb which can be safely left out when necessary.  Note that
 933    the default is to include everything. */
 934
 935 #ifndef MAINTENANCE_CMDS
 936 #define MAINTENANCE_CMDS 1
 937 #endif
 938
 939 #endif /* !defined (DEFS_H) */