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 QUIT_FIXME "FIXME"
 100 #define QUIT_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, class_trace,
 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_java,               /* Java */
 138    language_chill,              /* Chill */
 139    language_fortran,            /* Fortran */
 140    language_m2,                 /* Modula-2 */
 141    language_asm,                /* Assembly language */
 142    language_scm                 /* Scheme / Guile */
 143 };
 144
 145 /* the cleanup list records things that have to be undone
 146    if an error happens (descriptors to be closed, memory to be freed, etc.)
 147    Each link in the chain records a function to call and an
 148    argument to give it.
 149
 150    Use make_cleanup to add an element to the cleanup chain.
 151    Use do_cleanups to do all cleanup actions back to a given
 152    point in the chain.  Use discard_cleanups to remove cleanups
 153    from the chain back to a given point, not doing them.  */
 154
 155 struct cleanup
 156 {
 157   struct cleanup *next;
 158   void (*function) PARAMS ((PTR));
 159   PTR arg;
 160 };
 161
 162
 163 /* The ability to declare that a function never returns is useful, but
 164    not really required to compile GDB successfully, so the NORETURN and
 165    ATTR_NORETURN macros normally expand into nothing.  */
 166
 167 /* If compiling with older versions of GCC, a function may be declared
 168    "volatile" to indicate that it does not return.  */
 169
 170 #ifndef NORETURN
 171 # if defined(__GNUC__) \
 172      && (__GNUC__ == 1 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7))
 173 #  define NORETURN volatile
 174 # else
 175 #  define NORETURN /* nothing */
 176 # endif
 177 #endif
 178
 179 /* GCC 2.5 and later versions define a function attribute "noreturn",
 180    which is the preferred way to declare that a function never returns.
 181    However GCC 2.7 appears to be the first version in which this fully
 182    works everywhere we use it. */
 183
 184 #ifndef ATTR_NORETURN
 185 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 7
 186 #  define ATTR_NORETURN __attribute__ ((noreturn))
 187 # else
 188 #  define ATTR_NORETURN /* nothing */
 189 # endif
 190 #endif
 191
 192 #ifndef ATTR_FORMAT
 193 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 4 && defined (__ANSI_PROTOTYPES)
 194 #  define ATTR_FORMAT(type, x, y) __attribute__ ((format(type, x, y)))
 195 # else
 196 #  define ATTR_FORMAT(type, x, y) /* nothing */
 197 # endif
 198 #endif
 199
 200 /* Needed for various prototypes */
 201
 202 #ifdef __STDC__
 203 struct symtab;
 204 struct breakpoint;
 205 #endif
 206
 207 /* From blockframe.c */
 208
 209 extern int inside_entry_func PARAMS ((CORE_ADDR));
 210
 211 extern int inside_entry_file PARAMS ((CORE_ADDR addr));
 212
 213 extern int inside_main_func PARAMS ((CORE_ADDR pc));
 214
 215 /* From ch-lang.c, for the moment. (FIXME) */
 216
 217 extern char *chill_demangle PARAMS ((const char *));
 218
 219 /* From utils.c */
 220
 221 extern void notice_quit PARAMS ((void));
 222
 223 extern int strcmp_iw PARAMS ((const char *, const char *));
 224
 225 extern char *safe_strerror PARAMS ((int));
 226
 227 extern char *safe_strsignal PARAMS ((int));
 228
 229 extern void init_malloc PARAMS ((void *));
 230
 231 extern void request_quit PARAMS ((int));
 232
 233 extern void do_cleanups PARAMS ((struct cleanup *));
 234 extern void do_final_cleanups PARAMS ((struct cleanup *));
 235 extern void do_my_cleanups PARAMS ((struct cleanup **, struct cleanup *));
 236
 237 extern void discard_cleanups PARAMS ((struct cleanup *));
 238 extern void discard_final_cleanups PARAMS ((struct cleanup *));
 239 extern void discard_my_cleanups PARAMS ((struct cleanup **, struct cleanup *));
 240
 241 /* The bare make_cleanup function is one of those rare beasts that
 242    takes almost any type of function as the first arg and anything that
 243    will fit in a "void *" as the second arg.
 244
 245    Should be, once all calls and called-functions are cleaned up:
 246 extern struct cleanup *
 247 make_cleanup PARAMS ((void (*function) (void *), void *));
 248
 249    Until then, lint and/or various type-checking compiler options will
 250    complain about make_cleanup calls.  It'd be wrong to just cast things,
 251    since the type actually passed when the function is called would be
 252    wrong.  */
 253
 254 extern struct cleanup *make_cleanup ();
 255 extern struct cleanup *
 256 make_final_cleanup PARAMS ((void (*function) (void *), void *));
 257 extern struct cleanup *
 258 make_my_cleanup PARAMS ((struct cleanup **, void (*function) (void *), void *));
 259
 260 extern struct cleanup *save_cleanups PARAMS ((void));
 261 extern struct cleanup *save_final_cleanups PARAMS ((void));
 262 extern struct cleanup *save_my_cleanups PARAMS ((struct cleanup **));
 263
 264 extern void restore_cleanups PARAMS ((struct cleanup *));
 265 extern void restore_final_cleanups PARAMS ((struct cleanup *));
 266 extern void restore_my_cleanups PARAMS ((struct cleanup **, struct cleanup *));
 267
 268 extern void free_current_contents PARAMS ((char **));
 269
 270 extern void null_cleanup PARAMS ((PTR));
 271
 272 extern int myread PARAMS ((int, char *, int));
 273
 274 extern int query PARAMS((char *, ...))
 275      ATTR_FORMAT(printf, 1, 2);
 276
 277 /* From demangle.c */
 278
 279 extern void set_demangling_style PARAMS ((char *));
 280
 281 \f
 282 /* Annotation stuff.  */
 283
 284 extern int annotation_level; /* in stack.c */
 285 \f
 286 extern void begin_line PARAMS ((void));
 287
 288 extern void wrap_here PARAMS ((char *));
 289
 290 extern void reinitialize_more_filter PARAMS ((void));
 291
 292 typedef FILE GDB_FILE;
 293 #define gdb_stdout stdout
 294 #define gdb_stderr stderr
 295
 296 extern void gdb_flush PARAMS ((GDB_FILE *));
 297
 298 extern GDB_FILE *gdb_fopen PARAMS ((char * name, char * mode));
 299
 300 extern void fputs_filtered PARAMS ((const char *, GDB_FILE *));
 301
 302 extern void fputs_unfiltered PARAMS ((const char *, GDB_FILE *));
 303
 304 extern int fputc_unfiltered PARAMS ((int c, GDB_FILE *));
 305
 306 extern int putchar_unfiltered PARAMS ((int c));
 307
 308 extern void puts_filtered PARAMS ((const char *));
 309
 310 extern void puts_unfiltered PARAMS ((const char *));
 311
 312 extern void puts_debug PARAMS ((char *prefix, char *string, char *suffix));
 313
 314 extern void vprintf_filtered PARAMS ((const char *, va_list))
 315      ATTR_FORMAT(printf, 1, 0);
 316
 317 extern void vfprintf_filtered PARAMS ((FILE *, const char *, va_list))
 318      ATTR_FORMAT(printf, 2, 0);
 319
 320 extern void fprintf_filtered PARAMS ((FILE *, const char *, ...))
 321      ATTR_FORMAT(printf, 2, 3);
 322
 323 extern void fprintfi_filtered PARAMS ((int, FILE *, const char *, ...))
 324      ATTR_FORMAT(printf, 3, 4);
 325
 326 extern void printf_filtered PARAMS ((const char *, ...))
 327      ATTR_FORMAT(printf, 1, 2);
 328
 329 extern void printfi_filtered PARAMS ((int, const char *, ...))
 330      ATTR_FORMAT(printf, 2, 3);
 331
 332 extern void vprintf_unfiltered PARAMS ((const char *, va_list))
 333      ATTR_FORMAT(printf, 1, 0);
 334
 335 extern void vfprintf_unfiltered PARAMS ((FILE *, const char *, va_list))
 336      ATTR_FORMAT(printf, 2, 0);
 337
 338 extern void fprintf_unfiltered PARAMS ((FILE *, const char *, ...))
 339      ATTR_FORMAT(printf, 2, 3);
 340
 341 extern void printf_unfiltered PARAMS ((const char *, ...))
 342      ATTR_FORMAT(printf, 1, 2);
 343
 344 extern void print_spaces PARAMS ((int, GDB_FILE *));
 345
 346 extern void print_spaces_filtered PARAMS ((int, GDB_FILE *));
 347
 348 extern char *n_spaces PARAMS ((int));
 349
 350 extern void gdb_printchar PARAMS ((int, GDB_FILE *, int));
 351
 352 extern void gdb_print_address PARAMS ((void *, GDB_FILE *));
 353
 354 typedef bfd_vma t_addr;
 355 typedef bfd_vma t_reg;
 356 extern char* paddr PARAMS ((t_addr addr));
 357
 358 extern char* preg PARAMS ((t_reg reg));
 359
 360 extern char* paddr_nz PARAMS ((t_addr addr));
 361
 362 extern char* preg_nz PARAMS ((t_reg reg));
 363
 364 extern void fprintf_symbol_filtered PARAMS ((GDB_FILE *, char *,
 365                                              enum language, int));
 366
 367 extern NORETURN void perror_with_name PARAMS ((char *)) ATTR_NORETURN;
 368
 369 extern void print_sys_errmsg PARAMS ((char *, int));
 370
 371 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 372    "const char *" in unistd.h, so we can't declare the argument
 373    as "char *".  */
 374
 375 extern char *re_comp PARAMS ((const char *));
 376
 377 /* From symfile.c */
 378
 379 extern void symbol_file_command PARAMS ((char *, int));
 380
 381 /* From top.c */
 382
 383 extern char *skip_quoted PARAMS ((char *));
 384
 385 extern char *gdb_readline PARAMS ((char *));
 386
 387 extern char *command_line_input PARAMS ((char *, int, char *));
 388
 389 extern void print_prompt PARAMS ((void));
 390
 391 extern int input_from_terminal_p PARAMS ((void));
 392
 393 extern int info_verbose;
 394
 395 /* From printcmd.c */
 396
 397 extern void set_next_address PARAMS ((CORE_ADDR));
 398
 399 extern void print_address_symbolic PARAMS ((CORE_ADDR, GDB_FILE *, int,
 400                                             char *));
 401
 402 extern void print_address_numeric PARAMS ((CORE_ADDR, int, GDB_FILE *));
 403
 404 extern void print_address PARAMS ((CORE_ADDR, GDB_FILE *));
 405
 406 /* From source.c */
 407
 408 extern int openp PARAMS ((char *, int, char *, int, int, char **));
 409
 410 extern void mod_path PARAMS ((char *, char **));
 411
 412 extern void directory_command PARAMS ((char *, int));
 413
 414 extern void init_source_path PARAMS ((void));
 415
 416 extern char *symtab_to_filename PARAMS ((struct symtab *));
 417
 418 /* From findvar.c */
 419
 420 extern int read_relative_register_raw_bytes PARAMS ((int, char *));
 421
 422 /* From readline (but not in any readline .h files).  */
 423
 424 extern char *tilde_expand PARAMS ((char *));
 425
 426 /* Control types for commands */
 427
 428 enum misc_command_type
 429 {
 430   ok_command,
 431   end_command,
 432   else_command,
 433   nop_command
 434 };
 435
 436 enum command_control_type
 437 {
 438   simple_control,
 439   break_control,
 440   continue_control,
 441   while_control,
 442   if_control,
 443   invalid_control
 444 };
 445
 446 /* Structure for saved commands lines
 447    (for breakpoints, defined commands, etc).  */
 448
 449 struct command_line
 450 {
 451   struct command_line *next;
 452   char *line;
 453   enum command_control_type control_type;
 454   int body_count;
 455   struct command_line **body_list;
 456 };
 457
 458 extern struct command_line *read_command_lines PARAMS ((char *, int));
 459
 460 extern void free_command_lines PARAMS ((struct command_line **));
 461
 462 /* String containing the current directory (what getwd would return).  */
 463
 464 extern char *current_directory;
 465
 466 /* Default radixes for input and output.  Only some values supported.  */
 467 extern unsigned input_radix;
 468 extern unsigned output_radix;
 469
 470 /* Possibilities for prettyprint parameters to routines which print
 471    things.  Like enum language, this should be in value.h, but needs
 472    to be here for the same reason.  FIXME:  If we can eliminate this
 473    as an arg to LA_VAL_PRINT, then we can probably move it back to
 474    value.h. */
 475
 476 enum val_prettyprint
 477 {
 478   Val_no_prettyprint = 0,
 479   Val_prettyprint,
 480   /* Use the default setting which the user has specified.  */
 481   Val_pretty_default
 482 };
 483
 484 \f
 485 /* Host machine definition.  This will be a symlink to one of the
 486    xm-*.h files, built by the `configure' script.  */
 487
 488 #include "xm.h"
 489
 490 /* Native machine support.  This will be a symlink to one of the
 491    nm-*.h files, built by the `configure' script.  */
 492
 493 #include "nm.h"
 494
 495 /* Target machine definition.  This will be a symlink to one of the
 496    tm-*.h files, built by the `configure' script.  */
 497
 498 #include "tm.h"
 499
 500 /* If the xm.h file did not define the mode string used to open the
 501    files, assume that binary files are opened the same way as text
 502    files */
 503 #ifndef FOPEN_RB
 504 #include "fopen-same.h"
 505 #endif
 506
 507 /* Microsoft C can't deal with const pointers */
 508
 509 #ifdef _MSC_VER
 510 #define CONST_PTR
 511 #else
 512 #define CONST_PTR const
 513 #endif
 514
 515 /*
 516  * Allow things in gdb to be declared "volatile".  If compiling ANSI, it
 517  * just works.  If compiling with gcc but non-ansi, redefine to __volatile__.
 518  * If non-ansi, non-gcc, then eliminate "volatile" entirely, making those
 519  * objects be read-write rather than read-only.
 520  */
 521
 522 #ifndef volatile
 523 #ifndef __STDC__
 524 # ifdef __GNUC__
 525 #  define volatile __volatile__
 526 # else
 527 #  define volatile /*nothing*/
 528 # endif /* GNUC */
 529 #endif /* STDC */
 530 #endif /* volatile */
 531
 532 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 533    FIXME: Assumes 2's complement arithmetic */
 534
 535 #if !defined (UINT_MAX)
 536 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 537 #endif
 538
 539 #if !defined (INT_MAX)
 540 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 541 #endif
 542
 543 #if !defined (INT_MIN)
 544 #define INT_MIN ((int)((int) ~0 ^ INT_MAX))     /* 0x80000000 for 32-bits */
 545 #endif
 546
 547 #if !defined (ULONG_MAX)
 548 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 549 #endif
 550
 551 #if !defined (LONG_MAX)
 552 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 553 #endif
 554
 555 #ifndef LONGEST
 556
 557 #ifdef BFD64
 558
 559 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
 560
 561 #define LONGEST BFD_HOST_64_BIT
 562 #define ULONGEST BFD_HOST_U_64_BIT
 563
 564 #else /* No BFD64 */
 565
 566 #  ifdef CC_HAS_LONG_LONG
 567 #    define LONGEST long long
 568 #    define ULONGEST unsigned long long
 569 #  else
 570 /* BFD_HOST_64_BIT is defined for some hosts that don't have long long
 571    (e.g. i386-windows) so try it.  */
 572 #    ifdef BFD_HOST_64_BIT
 573 #      define LONGEST BFD_HOST_64_BIT
 574 #      define ULONGEST BFD_HOST_U_64_BIT
 575 #    else
 576 #      define LONGEST long
 577 #      define ULONGEST unsigned long
 578 #    endif
 579 #  endif
 580
 581 #endif /* No BFD64 */
 582
 583 #endif /* ! LONGEST */
 584
 585 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 586    arguments to a function, number in a value history, register number, etc.)
 587    where the value must not be larger than can fit in an int.  */
 588
 589 extern int longest_to_int PARAMS ((LONGEST));
 590
 591 /* Assorted functions we can declare, now that const and volatile are
 592    defined.  */
 593
 594 extern char *savestring PARAMS ((const char *, int));
 595
 596 extern char *msavestring PARAMS ((void *, const char *, int));
 597
 598 extern char *strsave PARAMS ((const char *));
 599
 600 extern char *mstrsave PARAMS ((void *, const char *));
 601
 602 #ifdef _MSC_VER /* FIXME; was long, but this causes compile errors in msvc if already defined */
 603 extern PTR xmmalloc PARAMS ((PTR, size_t));
 604
 605 extern PTR xmrealloc PARAMS ((PTR, PTR, size_t));
 606 #else
 607 extern PTR xmmalloc PARAMS ((PTR, long));
 608
 609 extern PTR xmrealloc PARAMS ((PTR, PTR, long));
 610 #endif
 611
 612 extern int parse_escape PARAMS ((char **));
 613
 614 extern char *reg_names[];
 615
 616 /* Message to be printed before the error message, when an error occurs.  */
 617
 618 extern char *error_pre_print;
 619
 620 /* Message to be printed before the error message, when an error occurs.  */
 621
 622 extern char *quit_pre_print;
 623
 624 /* Message to be printed before the warning message, when a warning occurs.  */
 625
 626 extern char *warning_pre_print;
 627
 628 extern NORETURN void error PARAMS((const char *, ...)) ATTR_NORETURN;
 629
 630 extern void error_begin PARAMS ((void));
 631
 632 extern NORETURN void fatal PARAMS((char *, ...)) ATTR_NORETURN;
 633
 634 extern NORETURN void nomem PARAMS ((long)) ATTR_NORETURN;
 635
 636 /* Reasons for calling return_to_top_level.  */
 637 enum return_reason {
 638   /* User interrupt.  */
 639   RETURN_QUIT,
 640
 641   /* Any other error.  */
 642   RETURN_ERROR
 643 };
 644
 645 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 646 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 647 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 648 typedef int return_mask;
 649
 650 extern NORETURN void
 651 return_to_top_level PARAMS ((enum return_reason)) ATTR_NORETURN;
 652
 653 extern int
 654 catch_errors PARAMS ((int (*) (char *), void *, char *, return_mask));
 655
 656 extern void warning_begin PARAMS ((void));
 657
 658 extern void warning PARAMS ((const char *, ...))
 659      ATTR_FORMAT(printf, 1, 2);
 660
 661 /* Global functions from other, non-gdb GNU thingies.
 662    Libiberty thingies are no longer declared here.  We include libiberty.h
 663    above, instead.  */
 664
 665 #ifndef GETENV_PROVIDED
 666 extern char *getenv PARAMS ((const char *));
 667 #endif
 668
 669 /* From other system libraries */
 670
 671 #ifdef HAVE_STDDEF_H
 672 #include <stddef.h>
 673 #endif
 674
 675 #ifdef HAVE_STDLIB_H
 676 #if defined(_MSC_VER) && !defined(__cplusplus)
 677 /* msvc defines these in stdlib.h for c code */
 678 #undef min
 679 #undef max
 680 #endif
 681 #include <stdlib.h>
 682 #endif
 683 #ifndef min
 684 #define min(a, b) ((a) < (b) ? (a) : (b))
 685 #endif
 686 #ifndef max
 687 #define max(a, b) ((a) > (b) ? (a) : (b))
 688 #endif
 689
 690
 691 /* We take the address of fclose later, but some stdio's forget
 692    to declare this.  We can't always declare it since there's
 693    no way to declare the parameters without upsetting some compiler
 694    somewhere. */
 695
 696 #ifndef FCLOSE_PROVIDED
 697 extern int fclose PARAMS ((FILE *));
 698 #endif
 699
 700 #ifndef atof
 701 extern double atof PARAMS ((const char *));     /* X3.159-1989  4.10.1.1 */
 702 #endif
 703
 704 #ifndef MALLOC_INCOMPATIBLE
 705
 706 #ifdef NEED_DECLARATION_MALLOC
 707 extern PTR malloc ();
 708 #endif
 709
 710 #ifdef NEED_DECLARATION_REALLOC
 711 extern PTR realloc ();
 712 #endif
 713
 714 #ifdef NEED_DECLARATION_FREE
 715 extern void free ();
 716 #endif
 717
 718 #endif /* MALLOC_INCOMPATIBLE */
 719
 720 /* Various possibilities for alloca.  */
 721 #ifndef alloca
 722 # ifdef __GNUC__
 723 #  define alloca __builtin_alloca
 724 # else /* Not GNU C */
 725 #  ifdef sparc
 726 #   include <alloca.h>          /* NOTE:  Doesn't declare alloca() */
 727 #  endif
 728
 729 /* We need to be careful not to declare this in a way which conflicts with
 730    bison.  Bison never declares it as char *, but under various circumstances
 731    (like __hpux) we need to use void *.  */
 732 #  if defined (__STDC__) || defined (__hpux)
 733    extern void *alloca ();
 734 #  else /* Don't use void *.  */
 735    extern char *alloca ();
 736 #  endif /* Don't use void *.  */
 737 # endif /* Not GNU C */
 738 #endif /* alloca not defined */
 739
 740 /* HOST_BYTE_ORDER must be defined to one of these.  */
 741
 742 #ifdef HAVE_ENDIAN_H
 743 #include <endian.h>
 744 #endif
 745
 746 #if !defined (BIG_ENDIAN)
 747 #define BIG_ENDIAN 4321
 748 #endif
 749
 750 #if !defined (LITTLE_ENDIAN)
 751 #define LITTLE_ENDIAN 1234
 752 #endif
 753
 754 /* Target-system-dependent parameters for GDB. */
 755
 756 #ifdef TARGET_BYTE_ORDER_SELECTABLE
 757 /* The target endianness is selectable at runtime.  Define
 758    TARGET_BYTE_ORDER to be a variable.  The user can use the `set
 759    endian' command to change it.  */
 760 #undef TARGET_BYTE_ORDER
 761 #define TARGET_BYTE_ORDER target_byte_order
 762 extern int target_byte_order;
 763 /* Nonzero when target_byte_order auto-detected */
 764 extern int target_byte_order_auto;
 765 #endif
 766
 767 extern void set_endian_from_file PARAMS ((bfd *));
 768
 769 /* The target architecture can be set at run-time. */
 770 extern int target_architecture_auto;
 771 extern const bfd_arch_info_type *target_architecture;
 772 extern void set_architecture_from_file PARAMS ((bfd *));
 773 /* Notify target of a change to the selected architecture. Zero return
 774    status indicates that the target did not like the change. */
 775 extern int (*target_architecture_hook) PARAMS ((const bfd_arch_info_type *ap));
 776 extern void set_architecture_from_arch_mach PARAMS ((enum bfd_architecture arch, unsigned long mach));
 777
 778 /* Number of bits in a char or unsigned char for the target machine.
 779    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 780 #if !defined (TARGET_CHAR_BIT)
 781 #define TARGET_CHAR_BIT 8
 782 #endif
 783
 784 /* Number of bits in a short or unsigned short for the target machine. */
 785 #if !defined (TARGET_SHORT_BIT)
 786 #define TARGET_SHORT_BIT (2 * TARGET_CHAR_BIT)
 787 #endif
 788
 789 /* Number of bits in an int or unsigned int for the target machine. */
 790 #if !defined (TARGET_INT_BIT)
 791 #define TARGET_INT_BIT (4 * TARGET_CHAR_BIT)
 792 #endif
 793
 794 /* Number of bits in a long or unsigned long for the target machine. */
 795 #if !defined (TARGET_LONG_BIT)
 796 #define TARGET_LONG_BIT (4 * TARGET_CHAR_BIT)
 797 #endif
 798
 799 /* Number of bits in a long long or unsigned long long for the target machine. */
 800 #if !defined (TARGET_LONG_LONG_BIT)
 801 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 802 #endif
 803
 804 /* Number of bits in a float for the target machine. */
 805 #if !defined (TARGET_FLOAT_BIT)
 806 #define TARGET_FLOAT_BIT (4 * TARGET_CHAR_BIT)
 807 #endif
 808
 809 /* Number of bits in a double for the target machine. */
 810 #if !defined (TARGET_DOUBLE_BIT)
 811 #define TARGET_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 812 #endif
 813
 814 /* Number of bits in a long double for the target machine.  */
 815 #if !defined (TARGET_LONG_DOUBLE_BIT)
 816 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 817 #endif
 818
 819 /* Number of bits in a pointer for the target machine */
 820 #if !defined (TARGET_PTR_BIT)
 821 #define TARGET_PTR_BIT TARGET_INT_BIT
 822 #endif
 823
 824 /* If we picked up a copy of CHAR_BIT from a configuration file
 825    (which may get it by including <limits.h>) then use it to set
 826    the number of bits in a host char.  If not, use the same size
 827    as the target. */
 828
 829 #if defined (CHAR_BIT)
 830 #define HOST_CHAR_BIT CHAR_BIT
 831 #else
 832 #define HOST_CHAR_BIT TARGET_CHAR_BIT
 833 #endif
 834
 835 /* The bit byte-order has to do just with numbering of bits in
 836    debugging symbols and such.  Conceptually, it's quite separate
 837    from byte/word byte order.  */
 838
 839 #if !defined (BITS_BIG_ENDIAN)
 840 #ifndef TARGET_BYTE_ORDER_SELECTABLE
 841
 842 #if TARGET_BYTE_ORDER == BIG_ENDIAN
 843 #define BITS_BIG_ENDIAN 1
 844 #endif /* Big endian.  */
 845
 846 #if TARGET_BYTE_ORDER == LITTLE_ENDIAN
 847 #define BITS_BIG_ENDIAN 0
 848 #endif /* Little endian.  */
 849
 850 #else /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
 851
 852 #define BITS_BIG_ENDIAN (TARGET_BYTE_ORDER == BIG_ENDIAN)
 853
 854 #endif /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
 855 #endif /* BITS_BIG_ENDIAN not defined.  */
 856
 857 /* In findvar.c.  */
 858
 859 extern LONGEST extract_signed_integer PARAMS ((void *, int));
 860
 861 extern ULONGEST extract_unsigned_integer PARAMS ((void *, int));
 862
 863 extern int extract_long_unsigned_integer PARAMS ((void *, int, LONGEST *));
 864
 865 extern CORE_ADDR extract_address PARAMS ((void *, int));
 866
 867 extern void store_signed_integer PARAMS ((void *, int, LONGEST));
 868
 869 extern void store_unsigned_integer PARAMS ((void *, int, ULONGEST));
 870
 871 extern void store_address PARAMS ((void *, int, CORE_ADDR));
 872
 873 /* Setup definitions for host and target floating point formats.  We need to
 874    consider the format for `float', `double', and `long double' for both target
 875    and host.  We need to do this so that we know what kind of conversions need
 876    to be done when converting target numbers to and from the hosts DOUBLEST
 877    data type.  */
 878
 879 /* This is used to indicate that we don't know the format of the floating point
 880    number.  Typically, this is useful for native ports, where the actual format
 881    is irrelevant, since no conversions will be taking place.  */
 882
 883 extern const struct floatformat floatformat_unknown;
 884
 885 #if HOST_BYTE_ORDER == BIG_ENDIAN
 886 #  ifndef HOST_FLOAT_FORMAT
 887 #    define HOST_FLOAT_FORMAT &floatformat_ieee_single_big
 888 #  endif
 889 #  ifndef HOST_DOUBLE_FORMAT
 890 #    define HOST_DOUBLE_FORMAT &floatformat_ieee_double_big
 891 #  endif
 892 #else                           /* LITTLE_ENDIAN */
 893 #  ifndef HOST_FLOAT_FORMAT
 894 #    define HOST_FLOAT_FORMAT &floatformat_ieee_single_little
 895 #  endif
 896 #  ifndef HOST_DOUBLE_FORMAT
 897 #    define HOST_DOUBLE_FORMAT &floatformat_ieee_double_little
 898 #  endif
 899 #endif
 900
 901 #ifndef HOST_LONG_DOUBLE_FORMAT
 902 #define HOST_LONG_DOUBLE_FORMAT &floatformat_unknown
 903 #endif
 904
 905 #ifndef TARGET_BYTE_ORDER_SELECTABLE
 906 #  if TARGET_BYTE_ORDER == BIG_ENDIAN
 907 #    ifndef TARGET_FLOAT_FORMAT
 908 #      define TARGET_FLOAT_FORMAT &floatformat_ieee_single_big
 909 #    endif
 910 #    ifndef TARGET_DOUBLE_FORMAT
 911 #      define TARGET_DOUBLE_FORMAT &floatformat_ieee_double_big
 912 #    endif
 913 #  else /* LITTLE_ENDIAN */
 914 #    ifndef TARGET_FLOAT_FORMAT
 915 #      define TARGET_FLOAT_FORMAT &floatformat_ieee_single_little
 916 #    endif
 917 #    ifndef TARGET_DOUBLE_FORMAT
 918 #      define TARGET_DOUBLE_FORMAT &floatformat_ieee_double_little
 919 #    endif
 920 #  endif
 921 #else                           /* TARGET_BYTE_ORDER_SELECTABLE */
 922 #  ifndef TARGET_FLOAT_FORMAT
 923 #    define TARGET_FLOAT_FORMAT (target_byte_order == BIG_ENDIAN \
 924                                  ? &floatformat_ieee_single_big \
 925                                  : &floatformat_ieee_single_little)
 926 #  endif
 927 #  ifndef TARGET_DOUBLE_FORMAT
 928 #    define TARGET_DOUBLE_FORMAT (target_byte_order == BIG_ENDIAN \
 929                                   ? &floatformat_ieee_double_big \
 930                                   : &floatformat_ieee_double_little)
 931 #  endif
 932 #endif
 933
 934 #ifndef TARGET_LONG_DOUBLE_FORMAT
 935 #  define TARGET_LONG_DOUBLE_FORMAT &floatformat_unknown
 936 #endif
 937
 938 /* Use `long double' if the host compiler supports it.  (Note that this is not
 939    necessarily any longer than `double'.  On SunOS/gcc, it's the same as
 940    double.)  This is necessary because GDB internally converts all floating
 941    point values to the widest type supported by the host.
 942
 943    There are problems however, when the target `long double' is longer than the
 944    host's `long double'.  In general, we'll probably reduce the precision of
 945    any such values and print a warning.  */
 946
 947 #ifdef HAVE_LONG_DOUBLE
 948 typedef long double DOUBLEST;
 949 #else
 950 typedef double DOUBLEST;
 951 #endif
 952
 953 extern void floatformat_to_doublest PARAMS ((const struct floatformat *,
 954                                              char *, DOUBLEST *));
 955 extern void floatformat_from_doublest PARAMS ((const struct floatformat *,
 956                                                DOUBLEST *, char *));
 957 extern DOUBLEST extract_floating PARAMS ((void *, int));
 958
 959 extern void store_floating PARAMS ((void *, int, DOUBLEST));
 960 \f
 961 /* On some machines there are bits in addresses which are not really
 962    part of the address, but are used by the kernel, the hardware, etc.
 963    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
 964    so we get a "real" address such as one would find in a symbol
 965    table.  This is used only for addresses of instructions, and even then
 966    I'm not sure it's used in all contexts.  It exists to deal with there
 967    being a few stray bits in the PC which would mislead us, not as some sort
 968    of generic thing to handle alignment or segmentation (it's possible it
 969    should be in TARGET_READ_PC instead).  */
 970 #if !defined (ADDR_BITS_REMOVE)
 971 #define ADDR_BITS_REMOVE(addr) (addr)
 972 #endif /* No ADDR_BITS_REMOVE.  */
 973
 974 /* From valops.c */
 975
 976 extern CORE_ADDR push_bytes PARAMS ((CORE_ADDR, char *, int));
 977
 978 extern CORE_ADDR push_word PARAMS ((CORE_ADDR, ULONGEST));
 979
 980 /* Some parts of gdb might be considered optional, in the sense that they
 981    are not essential for being able to build a working, usable debugger
 982    for a specific environment.  For example, the maintenance commands
 983    are there for the benefit of gdb maintainers.  As another example,
 984    some environments really don't need gdb's that are able to read N
 985    different object file formats.  In order to make it possible (but
 986    not necessarily recommended) to build "stripped down" versions of
 987    gdb, the following defines control selective compilation of those
 988    parts of gdb which can be safely left out when necessary.  Note that
 989    the default is to include everything. */
 990
 991 #ifndef MAINTENANCE_CMDS
 992 #define MAINTENANCE_CMDS 1
 993 #endif
 994
 995 #ifdef MAINTENANCE_CMDS
 996 extern int watchdog;
 997 #endif
 998
 999 #include "dis-asm.h"            /* Get defs for disassemble_info */
1000
1001 extern int dis_asm_read_memory PARAMS ((bfd_vma memaddr, bfd_byte *myaddr,
1002                                         int len, disassemble_info *info));
1003
1004 extern void dis_asm_memory_error PARAMS ((int status, bfd_vma memaddr,
1005                                           disassemble_info *info));
1006
1007 extern void dis_asm_print_address PARAMS ((bfd_vma addr,
1008                                            disassemble_info *info));
1009
1010 extern int (*tm_print_insn) PARAMS ((bfd_vma, disassemble_info*));
1011 extern disassemble_info tm_print_insn_info;
1012
1013 /* Hooks for alternate command interfaces.  */
1014
1015 #ifdef __STDC__
1016 struct target_waitstatus;
1017 struct cmd_list_element;
1018 #endif
1019
1020 extern void (*init_ui_hook) PARAMS ((char *argv0));
1021 extern void (*command_loop_hook) PARAMS ((void));
1022 extern void (*fputs_unfiltered_hook) PARAMS ((const char *linebuffer,
1023                                               FILE *stream));
1024 extern void (*print_frame_info_listing_hook) PARAMS ((struct symtab *s,
1025                                                       int line, int stopline,
1026                                                       int noerror));
1027 extern int (*query_hook) PARAMS ((const char *, va_list));
1028 extern void (*flush_hook) PARAMS ((FILE *stream));
1029 extern void (*create_breakpoint_hook) PARAMS ((struct breakpoint *b));
1030 extern void (*delete_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
1031 extern void (*modify_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
1032 extern void (*target_output_hook) PARAMS ((char *));
1033 extern void (*interactive_hook) PARAMS ((void));
1034 extern void (*registers_changed_hook) PARAMS ((void));
1035 extern void (*readline_begin_hook) PARAMS ((char *, ...));
1036 extern char * (*readline_hook) PARAMS ((char *));
1037 extern void (*readline_end_hook) PARAMS ((void));
1038
1039 extern int (*target_wait_hook) PARAMS ((int pid,
1040                                         struct target_waitstatus *status));
1041
1042 extern void (*call_command_hook) PARAMS ((struct cmd_list_element *c,
1043                                           char *cmd, int from_tty));
1044
1045 extern NORETURN void (*error_hook) PARAMS ((void)) ATTR_NORETURN;
1046
1047
1048
1049 /* Inhibit window interface if non-zero. */
1050
1051 extern int use_windows;
1052
1053 /* Symbolic definitions of filename-related things.  */
1054 /* FIXME, this doesn't work very well if host and executable
1055    filesystems conventions are different.  */
1056
1057 #ifndef DIRNAME_SEPARATOR
1058 #define DIRNAME_SEPARATOR ':'
1059 #endif
1060
1061 #ifndef SLASH_P
1062 #if defined(__GO32__)||defined(_WIN32)
1063 #define SLASH_P(X) ((X)=='\\')
1064 #else
1065 #define SLASH_P(X) ((X)=='/')
1066 #endif
1067 #endif
1068
1069 #ifndef SLASH_CHAR
1070 #if defined(__GO32__)||defined(_WIN32)
1071 #define SLASH_CHAR '\\'
1072 #else
1073 #define SLASH_CHAR '/'
1074 #endif
1075 #endif
1076
1077 #ifndef SLASH_STRING
1078 #if defined(__GO32__)||defined(_WIN32)
1079 #define SLASH_STRING "\\"
1080 #else
1081 #define SLASH_STRING "/"
1082 #endif
1083 #endif
1084
1085 #ifndef ROOTED_P
1086 #define ROOTED_P(X) (SLASH_P((X)[0]))
1087 #endif
1088
1089 /* On some systems, PIDGET is defined to extract the inferior pid from
1090    an internal pid that has the thread id and pid in seperate bit
1091    fields.  If not defined, then just use the entire internal pid as
1092    the actual pid. */
1093
1094 #ifndef PIDGET
1095 #define PIDGET(pid) (pid)
1096 #endif
1097
1098 #endif /* #ifndef DEFS_H */