gdb/defs.h

   1 /* Basic, host-specific, and target-specific definitions for GDB.
   2    Copyright (C) 1986, 1989, 1991, 1992, 1993, 1994, 1995, 1996
   3    Free Software Foundation, Inc.
   4
   5 This file is part of GDB.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #ifndef DEFS_H
  22 #define DEFS_H
  23
  24 #include "config.h"             /* Generated by configure */
  25 #include <stdio.h>
  26 #include <errno.h>              /* System call error return status */
  27
  28 /* Just in case they're not defined in stdio.h. */
  29
  30 #ifndef SEEK_SET
  31 #define SEEK_SET 0
  32 #endif
  33 #ifndef SEEK_CUR
  34 #define SEEK_CUR 1
  35 #endif
  36
  37 /* First include ansidecl.h so we can use the various macro definitions
  38    here and in all subsequent file inclusions.  */
  39
  40 #include "ansidecl.h"
  41
  42 #ifdef ANSI_PROTOTYPES
  43 #include <stdarg.h>
  44 #else
  45 #include <varargs.h>
  46 #endif
  47
  48 #include "libiberty.h"
  49
  50 /* libiberty.h can't declare this one, but evidently we can.  */
  51 extern char *strsignal PARAMS ((int));
  52
  53 #include "progress.h"
  54
  55 #ifndef NO_MMALLOC
  56 #include "mmalloc.h"
  57 #endif
  58
  59 /* For BFD64 and bfd_vma.  */
  60 #include "bfd.h"
  61
  62 /* An address in the program being debugged.  Host byte order.  Rather
  63    than duplicate all the logic in BFD which figures out what type
  64    this is (long, long long, etc.) and whether it needs to be 64
  65    bits (the host/target interactions are subtle), we just use
  66    bfd_vma.  */
  67
  68 typedef bfd_vma CORE_ADDR;
  69
  70 #ifndef min
  71 #define min(a, b) ((a) < (b) ? (a) : (b))
  72 #endif
  73 #ifndef max
  74 #define max(a, b) ((a) > (b) ? (a) : (b))
  75 #endif
  76
  77 /* Gdb does *lots* of string compares.  Use macros to speed them up by
  78    avoiding function calls if the first characters are not the same. */
  79
  80 #define STRCMP(a,b) (*(a) == *(b) ? strcmp ((a), (b)) : (int)*(a) - (int)*(b))
  81 #define STREQ(a,b) (*(a) == *(b) ? !strcmp ((a), (b)) : 0)
  82 #define STREQN(a,b,c) (*(a) == *(b) ? !strncmp ((a), (b), (c)) : 0)
  83
  84 /* The character GNU C++ uses to build identifiers that must be unique from
  85    the program's identifiers (such as $this and $$vptr).  */
  86 #define CPLUS_MARKER '$'        /* May be overridden to '.' for SysV */
  87
  88 /* Check if a character is one of the commonly used C++ marker characters.  */
  89 extern int is_cplus_marker PARAMS ((int));
  90
  91 extern int quit_flag;
  92 extern int immediate_quit;
  93 extern int sevenbit_strings;
  94
  95 extern void quit PARAMS ((void));
  96
  97 #ifdef QUIT
  98 /* do twice to force compiler warning */
  99 #define FIXME "FIXME"
 100 #define FIXME "ignoring redefinition of QUIT"
 101 #else
 102 #define QUIT { \
 103   if (quit_flag) quit (); \
 104   if (interactive_hook) interactive_hook (); \
 105   PROGRESS (1); \
 106 }
 107 #endif
 108
 109 /* Command classes are top-level categories into which commands are broken
 110    down for "help" purposes.
 111    Notes on classes: class_alias is for alias commands which are not
 112    abbreviations of the original command.  class-pseudo is for commands
 113    which are not really commands nor help topics ("stop").  */
 114
 115 enum command_class
 116 {
 117   /* Special args to help_list */
 118   all_classes = -2, all_commands = -1,
 119   /* Classes of commands */
 120   no_class = -1, class_run = 0, class_vars, class_stack,
 121   class_files, class_support, class_info, class_breakpoint,
 122   class_alias, class_obscure, class_user, class_maintenance,
 123   class_pseudo
 124 };
 125
 126 /* Languages represented in the symbol table and elsewhere.
 127    This should probably be in language.h, but since enum's can't
 128    be forward declared to satisfy opaque references before their
 129    actual definition, needs to be here. */
 130
 131 enum language
 132 {
 133    language_unknown,            /* Language not known */
 134    language_auto,               /* Placeholder for automatic setting */
 135    language_c,                  /* C */
 136    language_cplus,              /* C++ */
 137    language_chill,              /* Chill */
 138    language_fortran,            /* Fortran */
 139    language_m2,                 /* Modula-2 */
 140    language_asm,                /* Assembly language */
 141    language_scm                 /* Scheme / Guile */
 142 };
 143
 144 /* the cleanup list records things that have to be undone
 145    if an error happens (descriptors to be closed, memory to be freed, etc.)
 146    Each link in the chain records a function to call and an
 147    argument to give it.
 148
 149    Use make_cleanup to add an element to the cleanup chain.
 150    Use do_cleanups to do all cleanup actions back to a given
 151    point in the chain.  Use discard_cleanups to remove cleanups
 152    from the chain back to a given point, not doing them.  */
 153
 154 struct cleanup
 155 {
 156   struct cleanup *next;
 157   void (*function) PARAMS ((PTR));
 158   PTR arg;
 159 };
 160
 161
 162 /* The ability to declare that a function never returns is useful, but
 163    not really required to compile GDB successfully, so the NORETURN and
 164    ATTR_NORETURN macros normally expand into nothing.  */
 165
 166 /* If compiling with older versions of GCC, a function may be declared
 167    "volatile" to indicate that it does not return.  */
 168
 169 #ifndef NORETURN
 170 # if defined(__GNUC__) \
 171      && (__GNUC__ == 1 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7))
 172 #  define NORETURN volatile
 173 # else
 174 #  define NORETURN /* nothing */
 175 # endif
 176 #endif
 177
 178 /* GCC 2.5 and later versions define a function attribute "noreturn",
 179    which is the preferred way to declare that a function never returns.
 180    However GCC 2.7 appears to be the first version in which this fully
 181    works everywhere we use it. */
 182
 183 #ifndef ATTR_NORETURN
 184 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 7
 185 #  define ATTR_NORETURN __attribute__ ((noreturn))
 186 # else
 187 #  define ATTR_NORETURN /* nothing */
 188 # endif
 189 #endif
 190
 191 #ifndef ATTR_FORMAT
 192 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 4 && defined (__ANSI_PROTOTYPES)
 193 #  define ATTR_FORMAT(type, x, y) __attribute__ ((format(type, x, y)))
 194 # else
 195 #  define ATTR_FORMAT(type, x, y) /* nothing */
 196 # endif
 197 #endif
 198
 199 /* Needed for various prototypes */
 200
 201 #ifdef __STDC__
 202 struct symtab;
 203 struct breakpoint;
 204 #endif
 205
 206 /* From blockframe.c */
 207
 208 extern int inside_entry_func PARAMS ((CORE_ADDR));
 209
 210 extern int inside_entry_file PARAMS ((CORE_ADDR addr));
 211
 212 extern int inside_main_func PARAMS ((CORE_ADDR pc));
 213
 214 /* From ch-lang.c, for the moment. (FIXME) */
 215
 216 extern char *chill_demangle PARAMS ((const char *));
 217
 218 /* From utils.c */
 219
 220 extern void notice_quit PARAMS ((void));
 221
 222 extern int strcmp_iw PARAMS ((const char *, const char *));
 223
 224 extern char *safe_strerror PARAMS ((int));
 225
 226 extern char *safe_strsignal PARAMS ((int));
 227
 228 extern void init_malloc PARAMS ((void *));
 229
 230 extern void request_quit PARAMS ((int));
 231
 232 extern void do_cleanups PARAMS ((struct cleanup *));
 233
 234 extern void discard_cleanups PARAMS ((struct cleanup *));
 235
 236 /* The bare make_cleanup function is one of those rare beasts that
 237    takes almost any type of function as the first arg and anything that
 238    will fit in a "void *" as the second arg.
 239
 240    Should be, once all calls and called-functions are cleaned up:
 241 extern struct cleanup *
 242 make_cleanup PARAMS ((void (*function) (void *), void *));
 243
 244    Until then, lint and/or various type-checking compiler options will
 245    complain about make_cleanup calls.  It'd be wrong to just cast things,
 246    since the type actually passed when the function is called would be
 247    wrong.  */
 248
 249 extern struct cleanup *make_cleanup ();
 250
 251 extern struct cleanup *save_cleanups PARAMS ((void));
 252
 253 extern void restore_cleanups PARAMS ((struct cleanup *));
 254
 255 extern void free_current_contents PARAMS ((char **));
 256
 257 extern void null_cleanup PARAMS ((PTR));
 258
 259 extern int myread PARAMS ((int, char *, int));
 260
 261 extern int query PARAMS((char *, ...))
 262      ATTR_FORMAT(printf, 1, 2);
 263
 264 /* From demangle.c */
 265
 266 extern void set_demangling_style PARAMS ((char *));
 267
 268 \f
 269 /* Annotation stuff.  */
 270
 271 extern int annotation_level; /* in stack.c */
 272 \f
 273 extern void begin_line PARAMS ((void));
 274
 275 extern void wrap_here PARAMS ((char *));
 276
 277 extern void reinitialize_more_filter PARAMS ((void));
 278
 279 typedef FILE GDB_FILE;
 280 #define gdb_stdout stdout
 281 #define gdb_stderr stderr
 282
 283 extern void gdb_flush PARAMS ((GDB_FILE *));
 284
 285 extern GDB_FILE *gdb_fopen PARAMS ((char * name, char * mode));
 286
 287 extern void fputs_filtered PARAMS ((const char *, GDB_FILE *));
 288
 289 extern void fputs_unfiltered PARAMS ((const char *, GDB_FILE *));
 290
 291 extern int fputc_unfiltered PARAMS ((int c, GDB_FILE *));
 292
 293 extern int putchar_unfiltered PARAMS ((int c));
 294
 295 extern void puts_filtered PARAMS ((const char *));
 296
 297 extern void puts_unfiltered PARAMS ((const char *));
 298
 299 extern void vprintf_filtered PARAMS ((const char *, va_list))
 300      ATTR_FORMAT(printf, 1, 0);
 301
 302 extern void vfprintf_filtered PARAMS ((FILE *, const char *, va_list))
 303      ATTR_FORMAT(printf, 2, 0);
 304
 305 extern void fprintf_filtered PARAMS ((FILE *, const char *, ...))
 306      ATTR_FORMAT(printf, 2, 3);
 307
 308 extern void fprintfi_filtered PARAMS ((int, FILE *, const char *, ...))
 309      ATTR_FORMAT(printf, 3, 4);
 310
 311 extern void printf_filtered PARAMS ((const char *, ...))
 312      ATTR_FORMAT(printf, 1, 2);
 313
 314 extern void printfi_filtered PARAMS ((int, const char *, ...))
 315      ATTR_FORMAT(printf, 2, 3);
 316
 317 extern void vprintf_unfiltered PARAMS ((const char *, va_list))
 318      ATTR_FORMAT(printf, 1, 0);
 319
 320 extern void vfprintf_unfiltered PARAMS ((FILE *, const char *, va_list))
 321      ATTR_FORMAT(printf, 2, 0);
 322
 323 extern void fprintf_unfiltered PARAMS ((FILE *, const char *, ...))
 324      ATTR_FORMAT(printf, 2, 3);
 325
 326 extern void printf_unfiltered PARAMS ((const char *, ...))
 327      ATTR_FORMAT(printf, 1, 2);
 328
 329 extern void print_spaces PARAMS ((int, GDB_FILE *));
 330
 331 extern void print_spaces_filtered PARAMS ((int, GDB_FILE *));
 332
 333 extern char *n_spaces PARAMS ((int));
 334
 335 extern void gdb_printchar PARAMS ((int, GDB_FILE *, int));
 336
 337 extern void gdb_print_address PARAMS ((void *, GDB_FILE *));
 338
 339 typedef bfd_vma t_addr;
 340 typedef bfd_vma t_reg;
 341 extern char* paddr PARAMS ((t_addr addr));
 342
 343 extern char* preg PARAMS ((t_reg reg));
 344
 345 extern void fprintf_symbol_filtered PARAMS ((GDB_FILE *, char *,
 346                                              enum language, int));
 347
 348 extern void perror_with_name PARAMS ((char *));
 349
 350 extern void print_sys_errmsg PARAMS ((char *, int));
 351
 352 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 353    "const char *" in unistd.h, so we can't declare the argument
 354    as "char *".  */
 355
 356 extern char *re_comp PARAMS ((const char *));
 357
 358 /* From symfile.c */
 359
 360 extern void symbol_file_command PARAMS ((char *, int));
 361
 362 /* From top.c */
 363
 364 extern char *skip_quoted PARAMS ((char *));
 365
 366 extern char *gdb_readline PARAMS ((char *));
 367
 368 extern char *command_line_input PARAMS ((char *, int, char *));
 369
 370 extern void print_prompt PARAMS ((void));
 371
 372 extern int input_from_terminal_p PARAMS ((void));
 373
 374 extern int info_verbose;
 375
 376 /* From printcmd.c */
 377
 378 extern void set_next_address PARAMS ((CORE_ADDR));
 379
 380 extern void print_address_symbolic PARAMS ((CORE_ADDR, GDB_FILE *, int,
 381                                             char *));
 382
 383 extern void print_address_numeric PARAMS ((CORE_ADDR, int, GDB_FILE *));
 384
 385 extern void print_address PARAMS ((CORE_ADDR, GDB_FILE *));
 386
 387 /* From source.c */
 388
 389 extern int openp PARAMS ((char *, int, char *, int, int, char **));
 390
 391 extern void mod_path PARAMS ((char *, char **));
 392
 393 extern void directory_command PARAMS ((char *, int));
 394
 395 extern void init_source_path PARAMS ((void));
 396
 397 extern char *symtab_to_filename PARAMS ((struct symtab *));
 398
 399 /* From findvar.c */
 400
 401 extern int read_relative_register_raw_bytes PARAMS ((int, char *));
 402
 403 /* From readline (but not in any readline .h files).  */
 404
 405 extern char *tilde_expand PARAMS ((char *));
 406
 407 /* Control types for commands */
 408
 409 enum misc_command_type
 410 {
 411   ok_command,
 412   end_command,
 413   else_command,
 414   nop_command
 415 };
 416
 417 enum command_control_type
 418 {
 419   simple_control,
 420   break_control,
 421   continue_control,
 422   while_control,
 423   if_control,
 424   invalid_control
 425 };
 426
 427 /* Structure for saved commands lines
 428    (for breakpoints, defined commands, etc).  */
 429
 430 struct command_line
 431 {
 432   struct command_line *next;
 433   char *line;
 434   enum command_control_type control_type;
 435   int body_count;
 436   struct command_line **body_list;
 437 };
 438
 439 extern struct command_line *read_command_lines PARAMS ((char *, int));
 440
 441 extern void free_command_lines PARAMS ((struct command_line **));
 442
 443 /* String containing the current directory (what getwd would return).  */
 444
 445 extern char *current_directory;
 446
 447 /* Default radixes for input and output.  Only some values supported.  */
 448 extern unsigned input_radix;
 449 extern unsigned output_radix;
 450
 451 /* Possibilities for prettyprint parameters to routines which print
 452    things.  Like enum language, this should be in value.h, but needs
 453    to be here for the same reason.  FIXME:  If we can eliminate this
 454    as an arg to LA_VAL_PRINT, then we can probably move it back to
 455    value.h. */
 456
 457 enum val_prettyprint
 458 {
 459   Val_no_prettyprint = 0,
 460   Val_prettyprint,
 461   /* Use the default setting which the user has specified.  */
 462   Val_pretty_default
 463 };
 464
 465 \f
 466 /* Host machine definition.  This will be a symlink to one of the
 467    xm-*.h files, built by the `configure' script.  */
 468
 469 #include "xm.h"
 470
 471 /* Native machine support.  This will be a symlink to one of the
 472    nm-*.h files, built by the `configure' script.  */
 473
 474 #include "nm.h"
 475
 476 /* Target machine definition.  This will be a symlink to one of the
 477    tm-*.h files, built by the `configure' script.  */
 478
 479 #include "tm.h"
 480
 481 /* If the xm.h file did not define the mode string used to open the
 482    files, assume that binary files are opened the same way as text
 483    files */
 484 #ifndef FOPEN_RB
 485 #include "fopen-same.h"
 486 #endif
 487
 488 /* Microsoft C can't deal with const pointers */
 489
 490 #ifdef _MSC_VER
 491 #define CONST_PTR
 492 #else
 493 #define CONST_PTR const
 494 #endif
 495
 496 /*
 497  * Allow things in gdb to be declared "volatile".  If compiling ANSI, it
 498  * just works.  If compiling with gcc but non-ansi, redefine to __volatile__.
 499  * If non-ansi, non-gcc, then eliminate "volatile" entirely, making those
 500  * objects be read-write rather than read-only.
 501  */
 502
 503 #ifndef volatile
 504 #ifndef __STDC__
 505 # ifdef __GNUC__
 506 #  define volatile __volatile__
 507 # else
 508 #  define volatile /*nothing*/
 509 # endif /* GNUC */
 510 #endif /* STDC */
 511 #endif /* volatile */
 512
 513 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 514    FIXME: Assumes 2's complement arithmetic */
 515
 516 #if !defined (UINT_MAX)
 517 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 518 #endif
 519
 520 #if !defined (INT_MAX)
 521 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 522 #endif
 523
 524 #if !defined (INT_MIN)
 525 #define INT_MIN ((int)((int) ~0 ^ INT_MAX))     /* 0x80000000 for 32-bits */
 526 #endif
 527
 528 #if !defined (ULONG_MAX)
 529 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 530 #endif
 531
 532 #if !defined (LONG_MAX)
 533 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 534 #endif
 535
 536 #ifdef BFD64
 537
 538 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
 539
 540 #define LONGEST BFD_HOST_64_BIT
 541
 542 #else /* No BFD64 */
 543
 544 /* LONGEST should not be a typedef, because "unsigned LONGEST" needs to work.
 545    CC_HAS_LONG_LONG is defined if the host compiler supports "long long" */
 546
 547 #ifndef LONGEST
 548 #  ifdef CC_HAS_LONG_LONG
 549 #    define LONGEST long long
 550 #  else
 551 #    define LONGEST long
 552 #  endif
 553 #endif
 554
 555 #endif /* No BFD64 */
 556
 557 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 558    arguments to a function, number in a value history, register number, etc.)
 559    where the value must not be larger than can fit in an int.  */
 560
 561 extern int longest_to_int PARAMS ((LONGEST));
 562
 563 /* Assorted functions we can declare, now that const and volatile are
 564    defined.  */
 565
 566 extern char *savestring PARAMS ((const char *, int));
 567
 568 extern char *msavestring PARAMS ((void *, const char *, int));
 569
 570 extern char *strsave PARAMS ((const char *));
 571
 572 extern char *mstrsave PARAMS ((void *, const char *));
 573
 574 #ifdef _WIN32 /* FIXME; was long, but this causes compile errors in msvc if already defined */
 575 extern PTR xmmalloc PARAMS ((PTR, size_t));
 576
 577 extern PTR xmrealloc PARAMS ((PTR, PTR, size_t));
 578 #else
 579 extern PTR xmmalloc PARAMS ((PTR, long));
 580
 581 extern PTR xmrealloc PARAMS ((PTR, PTR, long));
 582 #endif
 583
 584 extern int parse_escape PARAMS ((char **));
 585
 586 extern char *reg_names[];
 587
 588 /* Message to be printed before the error message, when an error occurs.  */
 589
 590 extern char *error_pre_print;
 591
 592 /* Message to be printed before the error message, when an error occurs.  */
 593
 594 extern char *quit_pre_print;
 595
 596 /* Message to be printed before the warning message, when a warning occurs.  */
 597
 598 extern char *warning_pre_print;
 599
 600 extern NORETURN void error PARAMS((char *, ...)) ATTR_NORETURN;
 601
 602 extern void error_begin PARAMS ((void));
 603
 604 extern NORETURN void fatal PARAMS((char *, ...)) ATTR_NORETURN;
 605
 606 extern NORETURN void nomem PARAMS ((long)) ATTR_NORETURN;
 607
 608 /* Reasons for calling return_to_top_level.  */
 609 enum return_reason {
 610   /* User interrupt.  */
 611   RETURN_QUIT,
 612
 613   /* Any other error.  */
 614   RETURN_ERROR
 615 };
 616
 617 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 618 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 619 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 620 typedef int return_mask;
 621
 622 extern NORETURN void
 623 return_to_top_level PARAMS ((enum return_reason)) ATTR_NORETURN;
 624
 625 extern int
 626 catch_errors PARAMS ((int (*) (char *), void *, char *, return_mask));
 627
 628 extern void warning_begin PARAMS ((void));
 629
 630 extern void warning PARAMS ((char *, ...))
 631      ATTR_FORMAT(printf, 1, 2);
 632
 633 /* Global functions from other, non-gdb GNU thingies.
 634    Libiberty thingies are no longer declared here.  We include libiberty.h
 635    above, instead.  */
 636
 637 #ifndef GETENV_PROVIDED
 638 extern char *getenv PARAMS ((const char *));
 639 #endif
 640
 641 /* From other system libraries */
 642
 643 #ifdef HAVE_STDDEF_H
 644 #include <stddef.h>
 645 #endif
 646
 647 #ifdef HAVE_STDLIB_H
 648 #if defined(_MSC_VER) && !defined(__cplusplus)
 649 /* msvc defines these in stdlib.h for c code */
 650 #undef min
 651 #undef max
 652 #endif
 653 #include <stdlib.h>
 654 #endif
 655 #ifndef min
 656 #define min(a, b) ((a) < (b) ? (a) : (b))
 657 #endif
 658 #ifndef max
 659 #define max(a, b) ((a) > (b) ? (a) : (b))
 660 #endif
 661
 662
 663 /* We take the address of fclose later, but some stdio's forget
 664    to declare this.  We can't always declare it since there's
 665    no way to declare the parameters without upsetting some compiler
 666    somewhere. */
 667
 668 #ifndef FCLOSE_PROVIDED
 669 extern int fclose PARAMS ((FILE *));
 670 #endif
 671
 672 #ifndef atof
 673 extern double atof PARAMS ((const char *));     /* X3.159-1989  4.10.1.1 */
 674 #endif
 675
 676 #ifndef MALLOC_INCOMPATIBLE
 677
 678 #ifdef NEED_DECLARATION_MALLOC
 679 extern PTR malloc ();
 680 #endif
 681
 682 #ifdef NEED_DECLARATION_REALLOC
 683 extern PTR realloc ();
 684 #endif
 685
 686 #ifdef NEED_DECLARATION_FREE
 687 extern void free ();
 688 #endif
 689
 690 #endif /* MALLOC_INCOMPATIBLE */
 691
 692 /* Various possibilities for alloca.  */
 693 #ifndef alloca
 694 # ifdef __GNUC__
 695 #  define alloca __builtin_alloca
 696 # else /* Not GNU C */
 697 #  ifdef sparc
 698 #   include <alloca.h>          /* NOTE:  Doesn't declare alloca() */
 699 #  endif
 700
 701 /* We need to be careful not to declare this in a way which conflicts with
 702    bison.  Bison never declares it as char *, but under various circumstances
 703    (like __hpux) we need to use void *.  */
 704 #  if defined (__STDC__) || defined (__hpux)
 705    extern void *alloca ();
 706 #  else /* Don't use void *.  */
 707    extern char *alloca ();
 708 #  endif /* Don't use void *.  */
 709 # endif /* Not GNU C */
 710 #endif /* alloca not defined */
 711
 712 /* HOST_BYTE_ORDER must be defined to one of these.  */
 713
 714 #ifdef HAVE_ENDIAN_H
 715 #include <endian.h>
 716 #endif
 717
 718 #if !defined (BIG_ENDIAN)
 719 #define BIG_ENDIAN 4321
 720 #endif
 721
 722 #if !defined (LITTLE_ENDIAN)
 723 #define LITTLE_ENDIAN 1234
 724 #endif
 725
 726 /* Target-system-dependent parameters for GDB. */
 727
 728 #ifdef TARGET_BYTE_ORDER_SELECTABLE
 729 /* The target endianness is selectable at runtime.  Define
 730    TARGET_BYTE_ORDER to be a variable.  The user can use the `set
 731    endian' command to change it.  */
 732 #undef TARGET_BYTE_ORDER
 733 #define TARGET_BYTE_ORDER target_byte_order
 734 extern int target_byte_order;
 735 #endif
 736
 737 extern void set_endian_from_file PARAMS ((bfd *));
 738
 739 /* Number of bits in a char or unsigned char for the target machine.
 740    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 741 #if !defined (TARGET_CHAR_BIT)
 742 #define TARGET_CHAR_BIT 8
 743 #endif
 744
 745 /* Number of bits in a short or unsigned short for the target machine. */
 746 #if !defined (TARGET_SHORT_BIT)
 747 #define TARGET_SHORT_BIT (2 * TARGET_CHAR_BIT)
 748 #endif
 749
 750 /* Number of bits in an int or unsigned int for the target machine. */
 751 #if !defined (TARGET_INT_BIT)
 752 #define TARGET_INT_BIT (4 * TARGET_CHAR_BIT)
 753 #endif
 754
 755 /* Number of bits in a long or unsigned long for the target machine. */
 756 #if !defined (TARGET_LONG_BIT)
 757 #define TARGET_LONG_BIT (4 * TARGET_CHAR_BIT)
 758 #endif
 759
 760 /* Number of bits in a long long or unsigned long long for the target machine. */
 761 #if !defined (TARGET_LONG_LONG_BIT)
 762 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 763 #endif
 764
 765 /* Number of bits in a float for the target machine. */
 766 #if !defined (TARGET_FLOAT_BIT)
 767 #define TARGET_FLOAT_BIT (4 * TARGET_CHAR_BIT)
 768 #endif
 769
 770 /* Number of bits in a double for the target machine. */
 771 #if !defined (TARGET_DOUBLE_BIT)
 772 #define TARGET_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 773 #endif
 774
 775 /* Number of bits in a long double for the target machine.  */
 776 #if !defined (TARGET_LONG_DOUBLE_BIT)
 777 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 778 #endif
 779
 780 /* Number of bits in a pointer for the target machine */
 781 #if !defined (TARGET_PTR_BIT)
 782 #define TARGET_PTR_BIT TARGET_INT_BIT
 783 #endif
 784
 785 /* If we picked up a copy of CHAR_BIT from a configuration file
 786    (which may get it by including <limits.h>) then use it to set
 787    the number of bits in a host char.  If not, use the same size
 788    as the target. */
 789
 790 #if defined (CHAR_BIT)
 791 #define HOST_CHAR_BIT CHAR_BIT
 792 #else
 793 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 794 #endif
 795
 796 /* The bit byte-order has to do just with numbering of bits in
 797    debugging symbols and such.  Conceptually, it's quite separate
 798    from byte/word byte order.  */
 799
 800 #if !defined (BITS_BIG_ENDIAN)
 801 #ifndef TARGET_BYTE_ORDER_SELECTABLE
 802
 803 #if TARGET_BYTE_ORDER == BIG_ENDIAN
 804 #define BITS_BIG_ENDIAN 1
 805 #endif /* Big endian.  */
 806
 807 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
 808 #define BITS_BIG_ENDIAN 0
 809 #endif /* Little endian.  */
 810
 811 #else /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
 812
 813 #define BITS_BIG_ENDIAN (TARGET_BYTE_ORDER == BIG_ENDIAN)
 814
 815 #endif /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
 816 #endif /* BITS_BIG_ENDIAN not defined.  */
 817
 818 /* In findvar.c.  */
 819
 820 extern LONGEST extract_signed_integer PARAMS ((void *, int));
 821
 822 extern unsigned LONGEST extract_unsigned_integer PARAMS ((void *, int));
 823
 824 extern int extract_long_unsigned_integer PARAMS ((void *, int, LONGEST *));
 825
 826 extern CORE_ADDR extract_address PARAMS ((void *, int));
 827
 828 extern void store_signed_integer PARAMS ((void *, int, LONGEST));
 829
 830 extern void store_unsigned_integer PARAMS ((void *, int, unsigned LONGEST));
 831
 832 extern void store_address PARAMS ((void *, int, CORE_ADDR));
 833
 834 /* Setup definitions for host and target floating point formats.  We need to
 835    consider the format for `float', `double', and `long double' for both target
 836    and host.  We need to do this so that we know what kind of conversions need
 837    to be done when converting target numbers to and from the hosts DOUBLEST
 838    data type.  */
 839
 840 /* This is used to indicate that we don't know the format of the floating point
 841    number.  Typically, this is useful for native ports, where the actual format
 842    is irrelevant, since no conversions will be taking place.  */
 843
 844 extern const struct floatformat floatformat_unknown;
 845
 846 #if HOST_BYTE_ORDER == BIG_ENDIAN
 847 #  ifndef HOST_FLOAT_FORMAT
 848 #    define HOST_FLOAT_FORMAT &floatformat_ieee_single_big
 849 #  endif
 850 #  ifndef HOST_DOUBLE_FORMAT
 851 #    define HOST_DOUBLE_FORMAT &floatformat_ieee_double_big
 852 #  endif
 853 #else                           /* LITTLE_ENDIAN */
 854 #  ifndef HOST_FLOAT_FORMAT
 855 #    define HOST_FLOAT_FORMAT &floatformat_ieee_single_little
 856 #  endif
 857 #  ifndef HOST_DOUBLE_FORMAT
 858 #    define HOST_DOUBLE_FORMAT &floatformat_ieee_double_little
 859 #  endif
 860 #endif
 861
 862 #ifndef HOST_LONG_DOUBLE_FORMAT
 863 #define HOST_LONG_DOUBLE_FORMAT &floatformat_unknown
 864 #endif
 865
 866 #ifndef TARGET_BYTE_ORDER_SELECTABLE
 867 #  if TARGET_BYTE_ORDER == BIG_ENDIAN
 868 #    ifndef TARGET_FLOAT_FORMAT
 869 #      define TARGET_FLOAT_FORMAT &floatformat_ieee_single_big
 870 #    endif
 871 #    ifndef TARGET_DOUBLE_FORMAT
 872 #      define TARGET_DOUBLE_FORMAT &floatformat_ieee_double_big
 873 #    endif
 874 #  else /* LITTLE_ENDIAN */
 875 #    ifndef TARGET_FLOAT_FORMAT
 876 #      define TARGET_FLOAT_FORMAT &floatformat_ieee_single_little
 877 #    endif
 878 #    ifndef TARGET_DOUBLE_FORMAT
 879 #      define TARGET_DOUBLE_FORMAT &floatformat_ieee_double_little
 880 #    endif
 881 #  endif
 882 #else                           /* TARGET_BYTE_ORDER_SELECTABLE */
 883 #  ifndef TARGET_FLOAT_FORMAT
 884 #    define TARGET_FLOAT_FORMAT (target_byte_order == BIG_ENDIAN \
 885                                  ? &floatformat_ieee_single_big \
 886                                  : &floatformat_ieee_single_little)
 887 #  endif
 888 #  ifndef TARGET_DOUBLE_FORMAT
 889 #    define TARGET_DOUBLE_FORMAT (target_byte_order == BIG_ENDIAN \
 890                                   ? &floatformat_ieee_double_big \
 891                                   : &floatformat_ieee_double_little)
 892 #  endif
 893 #endif
 894
 895 #ifndef TARGET_LONG_DOUBLE_FORMAT
 896 #  define TARGET_LONG_DOUBLE_FORMAT &floatformat_unknown
 897 #endif
 898
 899 /* Use `long double' if the host compiler supports it.  (Note that this is not
 900    necessarily any longer than `double'.  On SunOS/gcc, it's the same as
 901    double.)  This is necessary because GDB internally converts all floating
 902    point values to the widest type supported by the host.
 903
 904    There are problems however, when the target `long double' is longer than the
 905    host's `long double'.  In general, we'll probably reduce the precision of
 906    any such values and print a warning.  */
 907
 908 #ifdef HAVE_LONG_DOUBLE
 909 typedef long double DOUBLEST;
 910 #else
 911 typedef double DOUBLEST;
 912 #endif
 913
 914 extern void floatformat_to_doublest PARAMS ((const struct floatformat *,
 915                                              char *, DOUBLEST *));
 916 extern void floatformat_from_doublest PARAMS ((const struct floatformat *,
 917                                                DOUBLEST *, char *));
 918 extern DOUBLEST extract_floating PARAMS ((void *, int));
 919
 920 extern void store_floating PARAMS ((void *, int, DOUBLEST));
 921 \f
 922 /* On some machines there are bits in addresses which are not really
 923    part of the address, but are used by the kernel, the hardware, etc.
 924    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
 925    so we get a "real" address such as one would find in a symbol
 926    table.  This is used only for addresses of instructions, and even then
 927    I'm not sure it's used in all contexts.  It exists to deal with there
 928    being a few stray bits in the PC which would mislead us, not as some sort
 929    of generic thing to handle alignment or segmentation (it's possible it
 930    should be in TARGET_READ_PC instead).  */
 931 #if !defined (ADDR_BITS_REMOVE)
 932 #define ADDR_BITS_REMOVE(addr) (addr)
 933 #endif /* No ADDR_BITS_REMOVE.  */
 934
 935 /* From valops.c */
 936
 937 extern CORE_ADDR push_bytes PARAMS ((CORE_ADDR, char *, int));
 938
 939 extern CORE_ADDR push_word PARAMS ((CORE_ADDR, unsigned LONGEST));
 940
 941 /* Some parts of gdb might be considered optional, in the sense that they
 942    are not essential for being able to build a working, usable debugger
 943    for a specific environment.  For example, the maintenance commands
 944    are there for the benefit of gdb maintainers.  As another example,
 945    some environments really don't need gdb's that are able to read N
 946    different object file formats.  In order to make it possible (but
 947    not necessarily recommended) to build "stripped down" versions of
 948    gdb, the following defines control selective compilation of those
 949    parts of gdb which can be safely left out when necessary.  Note that
 950    the default is to include everything. */
 951
 952 #ifndef MAINTENANCE_CMDS
 953 #define MAINTENANCE_CMDS 1
 954 #endif
 955
 956 #ifdef MAINTENANCE_CMDS
 957 extern int watchdog;
 958 #endif
 959
 960 #include "dis-asm.h"            /* Get defs for disassemble_info */
 961
 962 extern int dis_asm_read_memory PARAMS ((bfd_vma memaddr, bfd_byte *myaddr,
 963                                         int len, disassemble_info *info));
 964
 965 extern void dis_asm_memory_error PARAMS ((int status, bfd_vma memaddr,
 966                                           disassemble_info *info));
 967
 968 extern void dis_asm_print_address PARAMS ((bfd_vma addr,
 969                                            disassemble_info *info));
 970
 971 extern int (*tm_print_insn) PARAMS ((bfd_vma, disassemble_info*));
 972 extern disassemble_info tm_print_insn_info;
 973
 974 /* Hooks for alternate command interfaces.  */
 975
 976 #ifdef __STDC__
 977 struct target_waitstatus;
 978 struct cmd_list_element;
 979 #endif
 980
 981 extern void (*init_ui_hook) PARAMS ((void));
 982 extern void (*command_loop_hook) PARAMS ((void));
 983 extern void (*fputs_unfiltered_hook) PARAMS ((const char *linebuffer,
 984                                               FILE *stream));
 985 extern void (*print_frame_info_listing_hook) PARAMS ((struct symtab *s,
 986                                                       int line, int stopline,
 987                                                       int noerror));
 988 extern int (*query_hook) PARAMS ((const char *, va_list));
 989 extern void (*flush_hook) PARAMS ((FILE *stream));
 990 extern void (*create_breakpoint_hook) PARAMS ((struct breakpoint *b));
 991 extern void (*delete_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
 992 extern void (*modify_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
 993 extern void (*target_output_hook) PARAMS ((char *));
 994 extern void (*interactive_hook) PARAMS ((void));
 995 extern void (*registers_changed_hook) PARAMS ((void));
 996 extern void (*readline_begin_hook) PARAMS ((char *, ...));
 997 extern char * (*readline_hook) PARAMS ((char *));
 998 extern void (*readline_end_hook) PARAMS ((void));
 999
1000 extern int (*target_wait_hook) PARAMS ((int pid,
1001                                         struct target_waitstatus *status));
1002
1003 extern void (*call_command_hook) PARAMS ((struct cmd_list_element *c,
1004                                           char *cmd, int from_tty));
1005
1006 extern NORETURN void (*error_hook) PARAMS ((void)) ATTR_NORETURN;
1007
1008
1009
1010 /* Inhibit window interface if non-zero. */
1011
1012 extern int use_windows;
1013
1014 /* Symbolic definitions of filename-related things.  */
1015 /* FIXME, this doesn't work very well if host and executable
1016    filesystems conventions are different.  */
1017
1018 #ifndef DIRNAME_SEPARATOR
1019 #define DIRNAME_SEPARATOR ':'
1020 #endif
1021
1022 #ifndef SLASH_P
1023 #if defined(__GO32__)||defined(_WIN32)
1024 #define SLASH_P(X) ((X)=='\\')
1025 #else
1026 #define SLASH_P(X) ((X)=='/')
1027 #endif
1028 #endif
1029
1030 #ifndef SLASH_CHAR
1031 #if defined(__GO32__)||defined(_WIN32)
1032 #define SLASH_CHAR '\\'
1033 #else
1034 #define SLASH_CHAR '/'
1035 #endif
1036 #endif
1037
1038 #ifndef SLASH_STRING
1039 #if defined(__GO32__)||defined(_WIN32)
1040 #define SLASH_STRING "\\"
1041 #else
1042 #define SLASH_STRING "/"
1043 #endif
1044 #endif
1045
1046 #ifndef ROOTED_P
1047 #define ROOTED_P(X) (SLASH_P((X)[0]))
1048 #endif
1049
1050 #endif /* #ifndef DEFS_H */