gdb/defs.h

   1 /* *INDENT-OFF* */ /* ATTR_FORMAT confuses indent, avoid running it for now */
   2 /* Basic, host-specific, and target-specific definitions for GDB.
   3    Copyright (C) 1986, 89, 91, 92, 93, 94, 95, 96, 98, 1999
   4    Free Software Foundation, Inc.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 59 Temple Place - Suite 330,
  21    Boston, MA 02111-1307, USA.  */
  22
  23 #ifndef DEFS_H
  24 #define DEFS_H
  25
  26 #include "config.h"             /* Generated by configure */
  27 #include <stdio.h>
  28 #include <errno.h>              /* System call error return status */
  29 #include <limits.h>
  30
  31 #ifdef HAVE_STDDEF_H
  32 #  include <stddef.h>
  33 #else
  34 #  include <sys/types.h>   /* for size_t */
  35 #endif
  36
  37 #ifdef HAVE_UNISTD_H
  38 #include <unistd.h>
  39 #endif
  40
  41 /* Just in case they're not defined in stdio.h. */
  42
  43 #ifndef SEEK_SET
  44 #define SEEK_SET 0
  45 #endif
  46 #ifndef SEEK_CUR
  47 #define SEEK_CUR 1
  48 #endif
  49
  50 /* First include ansidecl.h so we can use the various macro definitions
  51    here and in all subsequent file inclusions.  */
  52
  53 #include "ansidecl.h"
  54
  55 #include <stdarg.h> /* for va_list */
  56
  57 #include "libiberty.h"
  58
  59 /* libiberty.h can't declare this one, but evidently we can.  */
  60 extern char *strsignal PARAMS ((int));
  61
  62 #include "progress.h"
  63
  64 #ifdef USE_MMALLOC
  65 #include "mmalloc.h"
  66 #endif
  67
  68 /* For BFD64 and bfd_vma.  */
  69 #include "bfd.h"
  70
  71 /* An address in the program being debugged.  Host byte order.  Rather
  72    than duplicate all the logic in BFD which figures out what type
  73    this is (long, long long, etc.) and whether it needs to be 64
  74    bits (the host/target interactions are subtle), we just use
  75    bfd_vma.  */
  76
  77 typedef bfd_vma CORE_ADDR;
  78
  79 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
  80
  81 #ifndef LONGEST
  82
  83 #ifdef BFD64
  84
  85 #define LONGEST BFD_HOST_64_BIT
  86 #define ULONGEST BFD_HOST_U_64_BIT
  87
  88 #else /* No BFD64 */
  89
  90 #  ifdef CC_HAS_LONG_LONG
  91 #    define LONGEST long long
  92 #    define ULONGEST unsigned long long
  93 #  else
  94 /* BFD_HOST_64_BIT is defined for some hosts that don't have long long
  95    (e.g. i386-windows) so try it.  */
  96 #    ifdef BFD_HOST_64_BIT
  97 #      define LONGEST BFD_HOST_64_BIT
  98 #      define ULONGEST BFD_HOST_U_64_BIT
  99 #    else
 100 #      define LONGEST long
 101 #      define ULONGEST unsigned long
 102 #    endif
 103 #  endif
 104
 105 #endif /* No BFD64 */
 106
 107 #endif /* ! LONGEST */
 108
 109 extern int core_addr_lessthan PARAMS ((CORE_ADDR lhs, CORE_ADDR rhs));
 110 extern int core_addr_greaterthan PARAMS ((CORE_ADDR lhs, CORE_ADDR rhs));
 111
 112
 113 #ifndef min
 114 #define min(a, b) ((a) < (b) ? (a) : (b))
 115 #endif
 116 #ifndef max
 117 #define max(a, b) ((a) > (b) ? (a) : (b))
 118 #endif
 119
 120 /* Gdb does *lots* of string compares.  Use macros to speed them up by
 121    avoiding function calls if the first characters are not the same. */
 122
 123 #define STRCMP(a,b) (*(a) == *(b) ? strcmp ((a), (b)) : (int)*(a) - (int)*(b))
 124 #define STREQ(a,b) (*(a) == *(b) ? !strcmp ((a), (b)) : 0)
 125 #define STREQN(a,b,c) (*(a) == *(b) ? !strncmp ((a), (b), (c)) : 0)
 126
 127 /* The character GNU C++ uses to build identifiers that must be unique from
 128    the program's identifiers (such as $this and $$vptr).  */
 129 #define CPLUS_MARKER '$'        /* May be overridden to '.' for SysV */
 130
 131 /* Check if a character is one of the commonly used C++ marker characters.  */
 132 extern int is_cplus_marker PARAMS ((int));
 133
 134 /* use tui interface if non-zero */
 135 extern int tui_version;
 136
 137 #if defined(TUI)
 138 /* all invocations of TUIDO should have two sets of parens */
 139 #define TUIDO(x)        tuiDo x
 140 #else
 141 #define TUIDO(x)
 142 #endif
 143
 144 /* enable xdb commands if set */
 145 extern int xdb_commands;
 146
 147 /* enable dbx commands if set */
 148 extern int dbx_commands;
 149
 150 extern int quit_flag;
 151 extern int immediate_quit;
 152 extern int sevenbit_strings;
 153
 154 extern void quit PARAMS ((void));
 155
 156 #ifdef QUIT
 157 /* do twice to force compiler warning */
 158 #define QUIT_FIXME "FIXME"
 159 #define QUIT_FIXME "ignoring redefinition of QUIT"
 160 #else
 161 #define QUIT { \
 162   if (quit_flag) quit (); \
 163   if (interactive_hook) interactive_hook (); \
 164   PROGRESS (1); \
 165 }
 166 #endif
 167
 168 /* Command classes are top-level categories into which commands are broken
 169    down for "help" purposes.
 170    Notes on classes: class_alias is for alias commands which are not
 171    abbreviations of the original command.  class-pseudo is for commands
 172    which are not really commands nor help topics ("stop").  */
 173
 174 enum command_class
 175 {
 176   /* Special args to help_list */
 177   all_classes = -2, all_commands = -1,
 178   /* Classes of commands */
 179   no_class = -1, class_run = 0, class_vars, class_stack,
 180   class_files, class_support, class_info, class_breakpoint, class_trace,
 181   class_alias, class_obscure, class_user, class_maintenance,
 182   class_pseudo, class_tui, class_xdb
 183 };
 184
 185 /* Languages represented in the symbol table and elsewhere.
 186    This should probably be in language.h, but since enum's can't
 187    be forward declared to satisfy opaque references before their
 188    actual definition, needs to be here. */
 189
 190 enum language
 191 {
 192    language_unknown,            /* Language not known */
 193    language_auto,               /* Placeholder for automatic setting */
 194    language_c,                  /* C */
 195    language_cplus,              /* C++ */
 196    language_java,               /* Java */
 197    language_chill,              /* Chill */
 198    language_fortran,            /* Fortran */
 199    language_m2,                 /* Modula-2 */
 200    language_asm,                /* Assembly language */
 201    language_scm                 /* Scheme / Guile */
 202 };
 203
 204 enum precision_type
 205 {
 206   single_precision,
 207   double_precision,
 208   unspecified_precision
 209 };
 210
 211 /* the cleanup list records things that have to be undone
 212    if an error happens (descriptors to be closed, memory to be freed, etc.)
 213    Each link in the chain records a function to call and an
 214    argument to give it.
 215
 216    Use make_cleanup to add an element to the cleanup chain.
 217    Use do_cleanups to do all cleanup actions back to a given
 218    point in the chain.  Use discard_cleanups to remove cleanups
 219    from the chain back to a given point, not doing them.  */
 220
 221 struct cleanup
 222 {
 223   struct cleanup *next;
 224   void (*function) PARAMS ((PTR));
 225   PTR arg;
 226 };
 227
 228
 229 /* The ability to declare that a function never returns is useful, but
 230    not really required to compile GDB successfully, so the NORETURN and
 231    ATTR_NORETURN macros normally expand into nothing.  */
 232
 233 /* If compiling with older versions of GCC, a function may be declared
 234    "volatile" to indicate that it does not return.  */
 235
 236 #ifndef NORETURN
 237 # if defined(__GNUC__) \
 238      && (__GNUC__ == 1 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7))
 239 #  define NORETURN volatile
 240 # else
 241 #  define NORETURN /* nothing */
 242 # endif
 243 #endif
 244
 245 /* GCC 2.5 and later versions define a function attribute "noreturn",
 246    which is the preferred way to declare that a function never returns.
 247    However GCC 2.7 appears to be the first version in which this fully
 248    works everywhere we use it. */
 249
 250 #ifndef ATTR_NORETURN
 251 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 7
 252 #  define ATTR_NORETURN __attribute__ ((noreturn))
 253 # else
 254 #  define ATTR_NORETURN /* nothing */
 255 # endif
 256 #endif
 257
 258 #ifndef ATTR_FORMAT
 259 # if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 4
 260 #  define ATTR_FORMAT(type, x, y) __attribute__ ((format(type, x, y)))
 261 # else
 262 #  define ATTR_FORMAT(type, x, y) /* nothing */
 263 # endif
 264 #endif
 265
 266 /* Needed for various prototypes */
 267
 268 struct symtab;
 269 struct breakpoint;
 270
 271 /* From blockframe.c */
 272
 273 extern int inside_entry_func PARAMS ((CORE_ADDR));
 274
 275 extern int inside_entry_file PARAMS ((CORE_ADDR addr));
 276
 277 extern int inside_main_func PARAMS ((CORE_ADDR pc));
 278
 279 /* From ch-lang.c, for the moment. (FIXME) */
 280
 281 extern char *chill_demangle PARAMS ((const char *));
 282
 283 /* From utils.c */
 284
 285 extern void initialize_utils PARAMS ((void));
 286
 287 extern void notice_quit PARAMS ((void));
 288
 289 extern int strcmp_iw PARAMS ((const char *, const char *));
 290
 291 extern int subset_compare PARAMS ((char *, char *));
 292
 293 extern char *safe_strerror PARAMS ((int));
 294
 295 extern char *safe_strsignal PARAMS ((int));
 296
 297 extern void init_malloc PARAMS ((void *));
 298
 299 extern void request_quit PARAMS ((int));
 300
 301 extern void do_cleanups PARAMS ((struct cleanup *));
 302 extern void do_final_cleanups PARAMS ((struct cleanup *));
 303 extern void do_my_cleanups PARAMS ((struct cleanup **, struct cleanup *));
 304 extern void do_run_cleanups PARAMS ((struct cleanup *));
 305 extern void do_exec_cleanups PARAMS ((struct cleanup *));
 306
 307 extern void discard_cleanups PARAMS ((struct cleanup *));
 308 extern void discard_final_cleanups PARAMS ((struct cleanup *));
 309 extern void discard_my_cleanups PARAMS ((struct cleanup **, struct cleanup *));
 310
 311 typedef void (*make_cleanup_func) PARAMS ((void *));
 312
 313 extern struct cleanup *make_cleanup PARAMS ((make_cleanup_func, void *));
 314
 315 extern struct cleanup *make_cleanup_freeargv PARAMS ((char **));
 316
 317 extern struct cleanup *make_final_cleanup PARAMS ((make_cleanup_func, void *));
 318
 319 extern struct cleanup *make_my_cleanup PARAMS ((struct cleanup **,
 320                                                 make_cleanup_func, void *));
 321
 322 extern struct cleanup *make_run_cleanup PARAMS ((make_cleanup_func, void *));
 323
 324 extern struct cleanup *make_exec_cleanup PARAMS ((make_cleanup_func, void *));
 325
 326 extern struct cleanup *save_cleanups PARAMS ((void));
 327 extern struct cleanup *save_final_cleanups PARAMS ((void));
 328 extern struct cleanup *save_my_cleanups PARAMS ((struct cleanup **));
 329
 330 extern void restore_cleanups PARAMS ((struct cleanup *));
 331 extern void restore_final_cleanups PARAMS ((struct cleanup *));
 332 extern void restore_my_cleanups PARAMS ((struct cleanup **, struct cleanup *));
 333
 334 extern void free_current_contents PARAMS ((char **));
 335
 336 extern void null_cleanup PARAMS ((PTR));
 337
 338 extern int myread PARAMS ((int, char *, int));
 339
 340 extern int query PARAMS((char *, ...))
 341      ATTR_FORMAT(printf, 1, 2);
 342
 343 #if !defined (USE_MMALLOC)
 344 extern PTR mmalloc PARAMS ((PTR, size_t));
 345 extern PTR mrealloc PARAMS ((PTR, PTR, size_t));
 346 extern void mfree PARAMS ((PTR, PTR));
 347 #endif
 348
 349 extern void init_page_info PARAMS ((void));
 350
 351 /* From demangle.c */
 352
 353 extern void set_demangling_style PARAMS ((char *));
 354
 355 /* From tm.h */
 356
 357 struct type;
 358 typedef int (use_struct_convention_fn) PARAMS ((int gcc_p, struct type *value_type));
 359 extern use_struct_convention_fn generic_use_struct_convention;
 360
 361 typedef unsigned char *(breakpoint_from_pc_fn) PARAMS ((CORE_ADDR *pcptr, int *lenptr));
 362
 363
 364 \f
 365 /* Annotation stuff.  */
 366
 367 extern int annotation_level; /* in stack.c */
 368 \f
 369 extern void begin_line PARAMS ((void));
 370
 371 extern void wrap_here PARAMS ((char *));
 372
 373 extern void reinitialize_more_filter PARAMS ((void));
 374
 375 struct gdb_file;
 376 typedef struct gdb_file GDB_FILE; /* deprecated */
 377
 378 /* Normal results */
 379 extern GDB_FILE *gdb_stdout;
 380 /* Serious error notifications */
 381 extern GDB_FILE *gdb_stderr;
 382 /* Log/debug/trace messages that should bypass normal stdout/stderr
 383    filtering.  For momement, always call this stream using
 384    *_unfiltered. In the very near future that restriction shall be
 385    removed - either call shall be unfiltered. (cagney 1999-06-13). */
 386 extern GDB_FILE *gdb_stdlog;
 387 /* Target output that should bypass normal stdout/stderr filtering.
 388    For momement, always call this stream using *_unfiltered. In the
 389    very near future that restriction shall be removed - either call
 390    shall be unfiltered. (cagney 1999-07-02). */
 391 extern GDB_FILE *gdb_stdtarg;
 392
 393 #if defined(TUI)
 394 #include "tui.h"
 395 #include "tuiCommand.h"
 396 #include "tuiData.h"
 397 #include "tuiIO.h"
 398 #include "tuiLayout.h"
 399 #include "tuiWin.h"
 400 #endif
 401
 402 /* Create a new gdb_file with the specified methods. */
 403
 404 typedef void (gdb_file_flush_ftype) PARAMS ((struct gdb_file *stream));
 405 extern void set_gdb_file_flush PARAMS ((struct gdb_file *stream, gdb_file_flush_ftype *flush));
 406
 407 typedef void (gdb_file_fputs_ftype) PARAMS ((const char *, struct gdb_file *stream));
 408 extern void set_gdb_file_fputs PARAMS ((struct gdb_file *stream, gdb_file_fputs_ftype *fputs));
 409
 410 typedef int (gdb_file_isatty_ftype) PARAMS ((struct gdb_file *stream));
 411 extern void set_gdb_file_isatty PARAMS ((struct gdb_file *stream, gdb_file_isatty_ftype *isatty));
 412
 413 typedef void (gdb_file_rewind_ftype) PARAMS ((struct gdb_file *stream));
 414 extern void set_gdb_file_rewind PARAMS ((struct gdb_file *stream, gdb_file_rewind_ftype *rewind));
 415
 416 typedef void (gdb_file_put_ftype) PARAMS ((struct gdb_file *stream, struct gdb_file *dest));
 417 extern void set_gdb_file_put PARAMS ((struct gdb_file *stream, gdb_file_put_ftype *put));
 418
 419 typedef void (gdb_file_delete_ftype) PARAMS ((struct gdb_file *stream));
 420 extern void set_gdb_file_data PARAMS ((struct gdb_file *stream, void *data, gdb_file_delete_ftype *delete));
 421
 422 extern struct gdb_file *gdb_file_new PARAMS ((void));
 423
 424 extern void gdb_file_delete PARAMS ((struct gdb_file *stream));
 425
 426 extern void gdb_file_rewind PARAMS ((struct gdb_file *stream));
 427
 428 /* NOTE: copies left to right */
 429 extern void gdb_file_put PARAMS ((struct gdb_file *src, struct gdb_file *dest));
 430
 431 extern void *gdb_file_data PARAMS ((struct gdb_file *file));
 432
 433 /* Open the specified FILE as a gdb_file. */
 434 extern struct gdb_file *stdio_fileopen PARAMS ((FILE *));
 435 /* #if defined (TUI) */
 436 extern struct gdb_file *tui_fileopen PARAMS ((FILE *));
 437 /* #endif */
 438
 439 /* deprecated - use gdb_file_delete */
 440 extern void gdb_fclose PARAMS ((GDB_FILE **));
 441
 442 extern void gdb_flush PARAMS ((GDB_FILE *));
 443
 444 extern GDB_FILE *gdb_fopen PARAMS ((char * name, char * mode));
 445
 446 extern void fputs_filtered PARAMS ((const char *, GDB_FILE *));
 447
 448 extern void fputs_unfiltered PARAMS ((const char *, GDB_FILE *));
 449
 450 extern int fputc_filtered PARAMS ((int c, GDB_FILE *));
 451
 452 extern int fputc_unfiltered PARAMS ((int c, GDB_FILE *));
 453
 454 extern int putchar_unfiltered PARAMS ((int c));
 455
 456 extern void puts_filtered PARAMS ((const char *));
 457
 458 extern void puts_unfiltered PARAMS ((const char *));
 459
 460 extern void puts_debug PARAMS ((char *prefix, char *string, char *suffix));
 461
 462 extern void vprintf_filtered PARAMS ((const char *, va_list))
 463      ATTR_FORMAT(printf, 1, 0);
 464
 465 extern void vfprintf_filtered PARAMS ((GDB_FILE *, const char *, va_list))
 466      ATTR_FORMAT(printf, 2, 0);
 467
 468 extern void fprintf_filtered PARAMS ((GDB_FILE *, const char *, ...))
 469      ATTR_FORMAT(printf, 2, 3);
 470
 471 extern void fprintfi_filtered PARAMS ((int, GDB_FILE *, const char *, ...))
 472      ATTR_FORMAT(printf, 3, 4);
 473
 474 extern void printf_filtered PARAMS ((const char *, ...))
 475      ATTR_FORMAT(printf, 1, 2);
 476
 477 extern void printfi_filtered PARAMS ((int, const char *, ...))
 478      ATTR_FORMAT(printf, 2, 3);
 479
 480 extern void vprintf_unfiltered PARAMS ((const char *, va_list))
 481      ATTR_FORMAT(printf, 1, 0);
 482
 483 extern void vfprintf_unfiltered PARAMS ((GDB_FILE *, const char *, va_list))
 484      ATTR_FORMAT(printf, 2, 0);
 485
 486 extern void fprintf_unfiltered PARAMS ((GDB_FILE *, const char *, ...))
 487      ATTR_FORMAT(printf, 2, 3);
 488
 489 extern void printf_unfiltered PARAMS ((const char *, ...))
 490      ATTR_FORMAT(printf, 1, 2);
 491
 492 extern int gdb_file_isatty PARAMS ((GDB_FILE *));
 493
 494 /* #if defined (TUI) */
 495 extern GDB_FILE *gdb_file_init_astring PARAMS ((int));
 496 /* #endif */
 497
 498 extern void gdb_file_deallocate PARAMS ((GDB_FILE **));
 499
 500 /* #if defined (TUI) */
 501 extern char *gdb_file_get_strbuf PARAMS ((GDB_FILE *));
 502 /* #endif */
 503
 504 /* #if defined (TUI) */
 505 extern void gdb_file_adjust_strbuf PARAMS ((int, GDB_FILE *));
 506 /* #endif */
 507
 508 extern void print_spaces PARAMS ((int, GDB_FILE *));
 509
 510 extern void print_spaces_filtered PARAMS ((int, GDB_FILE *));
 511
 512 extern char *n_spaces PARAMS ((int));
 513
 514 extern void fputstr_filtered PARAMS ((const char *str, int quotr, GDB_FILE *stream));
 515
 516 extern void fputstr_unfiltered PARAMS ((const char *str, int quotr, GDB_FILE *stream));
 517
 518 extern void fputstrn_unfiltered PARAMS ((const char *str, int n, int quotr, GDB_FILE *stream));
 519
 520 /* Display the host ADDR on STREAM formatted as ``0x%x''. */
 521 extern void gdb_print_host_address (void *addr, struct gdb_file *stream);
 522
 523 /* Convert a CORE_ADDR into a HEX string.  paddr() is like %08lx.
 524    paddr_nz() is like %lx.  paddr_u() is like %lu. paddr_width() is
 525    for ``%*''. */
 526 extern int strlen_paddr (void);
 527 extern char* paddr (CORE_ADDR addr);
 528 extern char* paddr_nz (CORE_ADDR addr);
 529 extern char* paddr_u (CORE_ADDR addr);
 530 extern char* paddr_d (LONGEST addr);
 531
 532 typedef bfd_vma t_reg;
 533 extern char* preg (t_reg reg);
 534 extern char* preg_nz (t_reg reg);
 535
 536 extern void fprintf_symbol_filtered PARAMS ((GDB_FILE *, char *,
 537                                              enum language, int));
 538
 539 extern NORETURN void perror_with_name PARAMS ((char *)) ATTR_NORETURN;
 540
 541 extern void print_sys_errmsg PARAMS ((char *, int));
 542
 543 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 544    "const char *" in unistd.h, so we can't declare the argument
 545    as "char *".  */
 546
 547 extern char *re_comp PARAMS ((const char *));
 548
 549 /* From symfile.c */
 550
 551 extern void symbol_file_command PARAMS ((char *, int));
 552
 553 /* From top.c */
 554
 555 extern char *skip_quoted PARAMS ((char *));
 556
 557 extern char *gdb_readline PARAMS ((char *));
 558
 559 extern char *command_line_input PARAMS ((char *, int, char *));
 560
 561 extern void print_prompt PARAMS ((void));
 562
 563 extern int input_from_terminal_p PARAMS ((void));
 564
 565 extern int info_verbose;
 566
 567 /* From printcmd.c */
 568
 569 extern void set_next_address PARAMS ((CORE_ADDR));
 570
 571 extern void print_address_symbolic PARAMS ((CORE_ADDR, GDB_FILE *, int,
 572                                             char *));
 573
 574 extern void print_address_numeric PARAMS ((CORE_ADDR, int, GDB_FILE *));
 575
 576 extern void print_address PARAMS ((CORE_ADDR, GDB_FILE *));
 577
 578 /* From source.c */
 579
 580 extern int openp PARAMS ((char *, int, char *, int, int, char **));
 581
 582 extern int source_full_path_of PARAMS ((char *, char **));
 583
 584 extern void mod_path PARAMS ((char *, char **));
 585
 586 extern void directory_command PARAMS ((char *, int));
 587
 588 extern void init_source_path PARAMS ((void));
 589
 590 extern char *symtab_to_filename PARAMS ((struct symtab *));
 591
 592 /* From exec.c */
 593
 594 extern void exec_set_section_offsets (bfd_signed_vma text_off,
 595                                       bfd_signed_vma data_off,
 596                                       bfd_signed_vma bss_off);
 597
 598 /* From findvar.c */
 599
 600 extern int read_relative_register_raw_bytes PARAMS ((int, char *));
 601
 602 /* Possible lvalue types.  Like enum language, this should be in
 603    value.h, but needs to be here for the same reason. */
 604
 605 enum lval_type
 606   {
 607     /* Not an lval. */
 608     not_lval,
 609     /* In memory.  Could be a saved register.  */
 610     lval_memory,
 611     /* In a register.  */
 612     lval_register,
 613     /* In a gdb internal variable.  */
 614     lval_internalvar,
 615     /* Part of a gdb internal variable (structure field).  */
 616     lval_internalvar_component,
 617     /* In a register series in a frame not the current one, which may have been
 618        partially saved or saved in different places (otherwise would be
 619        lval_register or lval_memory).  */
 620     lval_reg_frame_relative
 621   };
 622
 623 struct frame_info;
 624
 625 void default_get_saved_register PARAMS ((char *raw_buffer, int *optimized,
 626                                          CORE_ADDR *addrp,
 627                                          struct frame_info *frame, int regnum,
 628                                          enum lval_type *lval));
 629
 630 /* From readline (but not in any readline .h files).  */
 631
 632 extern char *tilde_expand PARAMS ((char *));
 633
 634 /* Control types for commands */
 635
 636 enum misc_command_type
 637 {
 638   ok_command,
 639   end_command,
 640   else_command,
 641   nop_command
 642 };
 643
 644 enum command_control_type
 645 {
 646   simple_control,
 647   break_control,
 648   continue_control,
 649   while_control,
 650   if_control,
 651   invalid_control
 652 };
 653
 654 /* Structure for saved commands lines
 655    (for breakpoints, defined commands, etc).  */
 656
 657 struct command_line
 658 {
 659   struct command_line *next;
 660   char *line;
 661   enum command_control_type control_type;
 662   int body_count;
 663   struct command_line **body_list;
 664 };
 665
 666 extern struct command_line *read_command_lines PARAMS ((char *, int));
 667
 668 extern void free_command_lines PARAMS ((struct command_line **));
 669
 670 /* To continue the execution commands when running gdb asynchronously.
 671    A continuation structure contains a pointer to a function to be called
 672    to finish the command, once the target has stopped. Such mechanism is
 673    used bt the finish and until commands, and in the remote protocol
 674    when opening an extended-remote connection. */
 675
 676 struct continuation_arg
 677 {
 678   struct continuation_arg *next;
 679   PTR data;
 680 };
 681
 682 struct continuation
 683 {
 684   void (*continuation_hook) PARAMS ((struct continuation_arg *));
 685   struct continuation_arg *arg_list;
 686   struct continuation *next;
 687 }
 688 continuation;
 689
 690 /* In infrun.c. */
 691 extern struct continuation *cmd_continuation;
 692
 693 /* From utils.c */
 694 void add_continuation PARAMS ((void (*) PARAMS ((struct continuation_arg *)),
 695                                struct continuation_arg *));
 696 void do_all_continuations PARAMS ((void));
 697
 698 /* String containing the current directory (what getwd would return).  */
 699
 700 extern char *current_directory;
 701
 702 /* Default radixes for input and output.  Only some values supported.  */
 703 extern unsigned input_radix;
 704 extern unsigned output_radix;
 705
 706 /* Possibilities for prettyprint parameters to routines which print
 707    things.  Like enum language, this should be in value.h, but needs
 708    to be here for the same reason.  FIXME:  If we can eliminate this
 709    as an arg to LA_VAL_PRINT, then we can probably move it back to
 710    value.h. */
 711
 712 enum val_prettyprint
 713 {
 714   Val_no_prettyprint = 0,
 715   Val_prettyprint,
 716   /* Use the default setting which the user has specified.  */
 717   Val_pretty_default
 718 };
 719
 720 \f
 721 /* Host machine definition.  This will be a symlink to one of the
 722    xm-*.h files, built by the `configure' script.  */
 723
 724 #include "xm.h"
 725
 726 /* Native machine support.  This will be a symlink to one of the
 727    nm-*.h files, built by the `configure' script.  */
 728
 729 #include "nm.h"
 730
 731 /* Target machine definition.  This will be a symlink to one of the
 732    tm-*.h files, built by the `configure' script.  */
 733
 734 #include "tm.h"
 735
 736 /* If the xm.h file did not define the mode string used to open the
 737    files, assume that binary files are opened the same way as text
 738    files */
 739 #ifndef FOPEN_RB
 740 #include "fopen-same.h"
 741 #endif
 742
 743 /* Microsoft C can't deal with const pointers */
 744
 745 #ifdef _MSC_VER
 746 #define CONST_PTR
 747 #else
 748 #define CONST_PTR const
 749 #endif
 750
 751 /*
 752  * Allow things in gdb to be declared "volatile".  If compiling ANSI, it
 753  * just works.  If compiling with gcc but non-ansi, redefine to __volatile__.
 754  * If non-ansi, non-gcc, then eliminate "volatile" entirely, making those
 755  * objects be read-write rather than read-only.
 756  */
 757
 758 #ifndef volatile
 759 #ifndef __STDC__
 760 # ifdef __GNUC__
 761 #  define volatile __volatile__
 762 # else
 763 #  define volatile /*nothing*/
 764 # endif /* GNUC */
 765 #endif /* STDC */
 766 #endif /* volatile */
 767
 768 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 769    FIXME: Assumes 2's complement arithmetic */
 770
 771 #if !defined (UINT_MAX)
 772 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 773 #endif
 774
 775 #if !defined (INT_MAX)
 776 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 777 #endif
 778
 779 #if !defined (INT_MIN)
 780 #define INT_MIN ((int)((int) ~0 ^ INT_MAX))     /* 0x80000000 for 32-bits */
 781 #endif
 782
 783 #if !defined (ULONG_MAX)
 784 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 785 #endif
 786
 787 #if !defined (LONG_MAX)
 788 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 789 #endif
 790
 791 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 792    arguments to a function, number in a value history, register number, etc.)
 793    where the value must not be larger than can fit in an int.  */
 794
 795 extern int longest_to_int PARAMS ((LONGEST));
 796
 797 /* Assorted functions we can declare, now that const and volatile are
 798    defined.  */
 799
 800 extern char *savestring PARAMS ((const char *, int));
 801
 802 extern char *msavestring PARAMS ((void *, const char *, int));
 803
 804 extern char *strsave PARAMS ((const char *));
 805
 806 extern char *mstrsave PARAMS ((void *, const char *));
 807
 808 #ifdef _MSC_VER /* FIXME; was long, but this causes compile errors in msvc if already defined */
 809 extern PTR xmmalloc PARAMS ((PTR, size_t));
 810
 811 extern PTR xmrealloc PARAMS ((PTR, PTR, size_t));
 812 #else
 813 extern PTR xmmalloc PARAMS ((PTR, long));
 814
 815 extern PTR xmrealloc PARAMS ((PTR, PTR, long));
 816 #endif
 817
 818 extern int parse_escape PARAMS ((char **));
 819
 820 /* Message to be printed before the error message, when an error occurs.  */
 821
 822 extern char *error_pre_print;
 823
 824 /* Message to be printed before the error message, when an error occurs.  */
 825
 826 extern char *quit_pre_print;
 827
 828 /* Message to be printed before the warning message, when a warning occurs.  */
 829
 830 extern char *warning_pre_print;
 831
 832 extern NORETURN void error PARAMS((const char *, ...)) ATTR_NORETURN;
 833
 834 extern void error_begin PARAMS ((void));
 835
 836 extern NORETURN void internal_error (char *, ...) ATTR_NORETURN;
 837
 838 extern NORETURN void nomem PARAMS ((long)) ATTR_NORETURN;
 839
 840 /* Reasons for calling return_to_top_level.  */
 841 enum return_reason {
 842   /* User interrupt.  */
 843   RETURN_QUIT,
 844
 845   /* Any other error.  */
 846   RETURN_ERROR
 847 };
 848
 849 #define ALL_CLEANUPS    ((struct cleanup *)0)
 850
 851 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 852 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 853 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 854 typedef int return_mask;
 855
 856 extern NORETURN void
 857 return_to_top_level PARAMS ((enum return_reason)) ATTR_NORETURN;
 858
 859 typedef int (catch_errors_ftype) PARAMS ((PTR));
 860 extern int catch_errors PARAMS ((catch_errors_ftype *, PTR, char *, return_mask));
 861
 862 extern void warning_begin PARAMS ((void));
 863
 864 extern void warning PARAMS ((const char *, ...))
 865      ATTR_FORMAT(printf, 1, 2);
 866
 867 /* Global functions from other, non-gdb GNU thingies.
 868    Libiberty thingies are no longer declared here.  We include libiberty.h
 869    above, instead.  */
 870
 871 #ifndef GETENV_PROVIDED
 872 extern char *getenv PARAMS ((const char *));
 873 #endif
 874
 875 /* From other system libraries */
 876
 877 #ifdef HAVE_STDDEF_H
 878 #include <stddef.h>
 879 #endif
 880
 881 #ifdef HAVE_STDLIB_H
 882 #if defined(_MSC_VER) && !defined(__cplusplus)
 883 /* msvc defines these in stdlib.h for c code */
 884 #undef min
 885 #undef max
 886 #endif
 887 #include <stdlib.h>
 888 #endif
 889 #ifndef min
 890 #define min(a, b) ((a) < (b) ? (a) : (b))
 891 #endif
 892 #ifndef max
 893 #define max(a, b) ((a) > (b) ? (a) : (b))
 894 #endif
 895
 896
 897 /* We take the address of fclose later, but some stdio's forget
 898    to declare this.  We can't always declare it since there's
 899    no way to declare the parameters without upsetting some compiler
 900    somewhere. */
 901
 902 #ifndef FCLOSE_PROVIDED
 903 extern int fclose PARAMS ((FILE *));
 904 #endif
 905
 906 #ifndef atof
 907 extern double atof PARAMS ((const char *));     /* X3.159-1989  4.10.1.1 */
 908 #endif
 909
 910 #ifndef MALLOC_INCOMPATIBLE
 911
 912 #ifdef NEED_DECLARATION_MALLOC
 913 extern PTR malloc ();
 914 #endif
 915
 916 #ifdef NEED_DECLARATION_REALLOC
 917 extern PTR realloc ();
 918 #endif
 919
 920 #ifdef NEED_DECLARATION_FREE
 921 extern void free ();
 922 #endif
 923
 924 #endif /* MALLOC_INCOMPATIBLE */
 925
 926 /* Various possibilities for alloca.  */
 927 #ifndef alloca
 928 # ifdef __GNUC__
 929 #  define alloca __builtin_alloca
 930 # else /* Not GNU C */
 931 #  ifdef HAVE_ALLOCA_H
 932 #   include <alloca.h>
 933 #  else
 934 #   ifdef _AIX
 935  #pragma alloca
 936 #   else
 937
 938 /* We need to be careful not to declare this in a way which conflicts with
 939    bison.  Bison never declares it as char *, but under various circumstances
 940    (like __hpux) we need to use void *.  */
 941 #    if defined (__STDC__) || defined (__hpux)
 942    extern void *alloca ();
 943 #    else /* Don't use void *.  */
 944    extern char *alloca ();
 945 #    endif /* Don't use void *.  */
 946 #   endif /* Not _AIX */
 947 #  endif /* Not HAVE_ALLOCA_H */
 948 # endif /* Not GNU C */
 949 #endif /* alloca not defined */
 950
 951 /* HOST_BYTE_ORDER must be defined to one of these.  */
 952
 953 #ifdef HAVE_ENDIAN_H
 954 #include <endian.h>
 955 #endif
 956
 957 #if !defined (BIG_ENDIAN)
 958 #define BIG_ENDIAN 4321
 959 #endif
 960
 961 #if !defined (LITTLE_ENDIAN)
 962 #define LITTLE_ENDIAN 1234
 963 #endif
 964
 965 /* Dynamic target-system-dependent parameters for GDB. */
 966 #include "gdbarch.h"
 967
 968 /* Static target-system-dependent parameters for GDB. */
 969
 970 /* Number of bits in a char or unsigned char for the target machine.
 971    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 972 #if !defined (TARGET_CHAR_BIT)
 973 #define TARGET_CHAR_BIT 8
 974 #endif
 975
 976 /* Number of bits in a short or unsigned short for the target machine. */
 977 #if !defined (TARGET_SHORT_BIT)
 978 #define TARGET_SHORT_BIT (2 * TARGET_CHAR_BIT)
 979 #endif
 980
 981 /* Number of bits in an int or unsigned int for the target machine. */
 982 #if !defined (TARGET_INT_BIT)
 983 #define TARGET_INT_BIT (4 * TARGET_CHAR_BIT)
 984 #endif
 985
 986 /* Number of bits in a long or unsigned long for the target machine. */
 987 #if !defined (TARGET_LONG_BIT)
 988 #define TARGET_LONG_BIT (4 * TARGET_CHAR_BIT)
 989 #endif
 990
 991 /* Number of bits in a long long or unsigned long long for the target machine. */
 992 #if !defined (TARGET_LONG_LONG_BIT)
 993 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 994 #endif
 995
 996 /* Number of bits in a float for the target machine. */
 997 #if !defined (TARGET_FLOAT_BIT)
 998 #define TARGET_FLOAT_BIT (4 * TARGET_CHAR_BIT)
 999 #endif
1000
1001 /* Number of bits in a double for the target machine. */
1002 #if !defined (TARGET_DOUBLE_BIT)
1003 #define TARGET_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
1004 #endif
1005
1006 /* Number of bits in a long double for the target machine.  */
1007 #if !defined (TARGET_LONG_DOUBLE_BIT)
1008 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
1009 #endif
1010
1011 /* Number of bits in a pointer for the target machine */
1012 #if !defined (TARGET_PTR_BIT)
1013 #define TARGET_PTR_BIT TARGET_INT_BIT
1014 #endif
1015
1016 /* If we picked up a copy of CHAR_BIT from a configuration file
1017    (which may get it by including <limits.h>) then use it to set
1018    the number of bits in a host char.  If not, use the same size
1019    as the target. */
1020
1021 #if defined (CHAR_BIT)
1022 #define HOST_CHAR_BIT CHAR_BIT
1023 #else
1024 #define HOST_CHAR_BIT TARGET_CHAR_BIT
1025 #endif
1026
1027 /* The bit byte-order has to do just with numbering of bits in
1028    debugging symbols and such.  Conceptually, it's quite separate
1029    from byte/word byte order.  */
1030
1031 #if !defined (BITS_BIG_ENDIAN)
1032 #define BITS_BIG_ENDIAN (TARGET_BYTE_ORDER == BIG_ENDIAN)
1033 #endif
1034
1035 /* In findvar.c.  */
1036
1037 extern LONGEST extract_signed_integer PARAMS ((void *, int));
1038
1039 extern ULONGEST extract_unsigned_integer PARAMS ((void *, int));
1040
1041 extern int extract_long_unsigned_integer PARAMS ((void *, int, LONGEST *));
1042
1043 extern CORE_ADDR extract_address PARAMS ((void *, int));
1044
1045 extern void store_signed_integer PARAMS ((PTR, int, LONGEST));
1046
1047 extern void store_unsigned_integer PARAMS ((PTR, int, ULONGEST));
1048
1049 extern void store_address PARAMS ((PTR, int, LONGEST));
1050
1051 /* Setup definitions for host and target floating point formats.  We need to
1052    consider the format for `float', `double', and `long double' for both target
1053    and host.  We need to do this so that we know what kind of conversions need
1054    to be done when converting target numbers to and from the hosts DOUBLEST
1055    data type.  */
1056
1057 /* This is used to indicate that we don't know the format of the floating point
1058    number.  Typically, this is useful for native ports, where the actual format
1059    is irrelevant, since no conversions will be taking place.  */
1060
1061 extern const struct floatformat floatformat_unknown;
1062
1063 #if HOST_BYTE_ORDER == BIG_ENDIAN
1064 #  ifndef HOST_FLOAT_FORMAT
1065 #    define HOST_FLOAT_FORMAT &floatformat_ieee_single_big
1066 #  endif
1067 #  ifndef HOST_DOUBLE_FORMAT
1068 #    define HOST_DOUBLE_FORMAT &floatformat_ieee_double_big
1069 #  endif
1070 #else                           /* LITTLE_ENDIAN */
1071 #  ifndef HOST_FLOAT_FORMAT
1072 #    define HOST_FLOAT_FORMAT &floatformat_ieee_single_little
1073 #  endif
1074 #  ifndef HOST_DOUBLE_FORMAT
1075 #    define HOST_DOUBLE_FORMAT &floatformat_ieee_double_little
1076 #  endif
1077 #endif
1078
1079 #ifndef HOST_LONG_DOUBLE_FORMAT
1080 #define HOST_LONG_DOUBLE_FORMAT &floatformat_unknown
1081 #endif
1082
1083 #ifndef TARGET_FLOAT_FORMAT
1084 #define TARGET_FLOAT_FORMAT (TARGET_BYTE_ORDER == BIG_ENDIAN \
1085                              ? &floatformat_ieee_single_big \
1086                              : &floatformat_ieee_single_little)
1087 #endif
1088 #ifndef TARGET_DOUBLE_FORMAT
1089 #define TARGET_DOUBLE_FORMAT (TARGET_BYTE_ORDER == BIG_ENDIAN \
1090                               ? &floatformat_ieee_double_big \
1091                               : &floatformat_ieee_double_little)
1092 #endif
1093
1094 #ifndef TARGET_LONG_DOUBLE_FORMAT
1095 #  define TARGET_LONG_DOUBLE_FORMAT &floatformat_unknown
1096 #endif
1097
1098 /* Use `long double' if the host compiler supports it.  (Note that this is not
1099    necessarily any longer than `double'.  On SunOS/gcc, it's the same as
1100    double.)  This is necessary because GDB internally converts all floating
1101    point values to the widest type supported by the host.
1102
1103    There are problems however, when the target `long double' is longer than the
1104    host's `long double'.  In general, we'll probably reduce the precision of
1105    any such values and print a warning.  */
1106
1107 #ifdef HAVE_LONG_DOUBLE
1108 typedef long double DOUBLEST;
1109 #else
1110 typedef double DOUBLEST;
1111 #endif
1112
1113 extern void floatformat_to_doublest PARAMS ((const struct floatformat *,
1114                                              char *, DOUBLEST *));
1115 extern void floatformat_from_doublest PARAMS ((const struct floatformat *,
1116                                                DOUBLEST *, char *));
1117 extern DOUBLEST extract_floating PARAMS ((void *, int));
1118
1119 extern void store_floating PARAMS ((void *, int, DOUBLEST));
1120 \f
1121 /* On some machines there are bits in addresses which are not really
1122    part of the address, but are used by the kernel, the hardware, etc.
1123    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
1124    so we get a "real" address such as one would find in a symbol
1125    table.  This is used only for addresses of instructions, and even then
1126    I'm not sure it's used in all contexts.  It exists to deal with there
1127    being a few stray bits in the PC which would mislead us, not as some sort
1128    of generic thing to handle alignment or segmentation (it's possible it
1129    should be in TARGET_READ_PC instead). */
1130 #if !defined (ADDR_BITS_REMOVE)
1131 #define ADDR_BITS_REMOVE(addr) (addr)
1132 #endif /* No ADDR_BITS_REMOVE.  */
1133
1134 /* From valops.c */
1135
1136 extern CORE_ADDR push_bytes PARAMS ((CORE_ADDR, char *, int));
1137
1138 extern CORE_ADDR push_word PARAMS ((CORE_ADDR, ULONGEST));
1139
1140 extern int watchdog;
1141
1142 /* Hooks for alternate command interfaces.  */
1143 struct target_waitstatus;
1144 struct cmd_list_element;
1145
1146 /* Should the asynchronous variant of the interpreter (using the
1147    event-loop) be enabled? */
1148 extern int async_p;
1149
1150 extern void (*init_ui_hook) PARAMS ((char *argv0));
1151 extern void (*command_loop_hook) PARAMS ((void));
1152 extern void (*fputs_unfiltered_hook) PARAMS ((const char *linebuffer,
1153                                               GDB_FILE *stream));
1154 extern void (*print_frame_info_listing_hook) PARAMS ((struct symtab *s,
1155                                                       int line, int stopline,
1156                                                       int noerror));
1157 extern struct frame_info *parse_frame_specification PARAMS ((char *frame_exp));
1158 extern int  (*query_hook) PARAMS ((const char *, va_list));
1159 extern void (*warning_hook) PARAMS ((const char *, va_list));
1160 extern void (*flush_hook) PARAMS ((GDB_FILE *stream));
1161 extern void (*create_breakpoint_hook) PARAMS ((struct breakpoint *b));
1162 extern void (*delete_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
1163 extern void (*modify_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
1164 extern void (*interactive_hook) PARAMS ((void));
1165 extern void (*registers_changed_hook) PARAMS ((void));
1166 extern void (*readline_begin_hook) PARAMS ((char *, ...));
1167 extern char * (*readline_hook) PARAMS ((char *));
1168 extern void (*readline_end_hook) PARAMS ((void));
1169 extern void (*register_changed_hook) PARAMS ((int regno));
1170 extern void (*memory_changed_hook) PARAMS ((CORE_ADDR addr, int len));
1171 extern void (*context_hook) PARAMS ((int));
1172 extern int (*target_wait_hook) PARAMS ((int pid,
1173                                         struct target_waitstatus *status));
1174
1175 extern void (*call_command_hook) PARAMS ((struct cmd_list_element *c,
1176                                           char *cmd, int from_tty));
1177
1178 extern void (*set_hook) PARAMS ((struct cmd_list_element *c));
1179
1180 extern NORETURN void (*error_hook) PARAMS ((void)) ATTR_NORETURN;
1181
1182 extern void (*error_begin_hook) PARAMS ((void));
1183
1184
1185 /* Inhibit window interface if non-zero. */
1186
1187 extern int use_windows;
1188
1189 /* Symbolic definitions of filename-related things.  */
1190 /* FIXME, this doesn't work very well if host and executable
1191    filesystems conventions are different.  */
1192
1193 #ifndef DIRNAME_SEPARATOR
1194 #define DIRNAME_SEPARATOR ':'
1195 #endif
1196
1197 #ifndef SLASH_P
1198 #if defined(__GO32__)||defined(_WIN32)
1199 #define SLASH_P(X) ((X)=='\\')
1200 #else
1201 #define SLASH_P(X) ((X)=='/')
1202 #endif
1203 #endif
1204
1205 #ifndef SLASH_CHAR
1206 #if defined(__GO32__)||defined(_WIN32)
1207 #define SLASH_CHAR '\\'
1208 #else
1209 #define SLASH_CHAR '/'
1210 #endif
1211 #endif
1212
1213 #ifndef SLASH_STRING
1214 #if defined(__GO32__)||defined(_WIN32)
1215 #define SLASH_STRING "\\"
1216 #else
1217 #define SLASH_STRING "/"
1218 #endif
1219 #endif
1220
1221 #ifndef ROOTED_P
1222 #define ROOTED_P(X) (SLASH_P((X)[0]))
1223 #endif
1224
1225 /* On some systems, PIDGET is defined to extract the inferior pid from
1226    an internal pid that has the thread id and pid in seperate bit
1227    fields.  If not defined, then just use the entire internal pid as
1228    the actual pid. */
1229
1230 #ifndef PIDGET
1231 #define PIDGET(pid) (pid)
1232 #endif
1233
1234 /* If under Cygwin, provide backwards compatibility with older
1235    Cygwin compilers that don't define the current cpp define. */
1236 #ifdef __CYGWIN32__
1237 #ifndef __CYGWIN__
1238 #define __CYGWIN__
1239 #endif
1240 #endif
1241
1242 /* Define well known filenos if the system does not define them.  */
1243 #ifndef STDIN_FILENO
1244 #define STDIN_FILENO   0
1245 #endif
1246 #ifndef STDOUT_FILENO
1247 #define STDOUT_FILENO  1
1248 #endif
1249 #ifndef STDERR_FILENO
1250 #define STDERR_FILENO  2
1251 #endif
1252
1253 /* If this definition isn't overridden by the header files, assume
1254    that isatty and fileno exist on this system.  */
1255 #ifndef ISATTY
1256 #define ISATTY(FP)      (isatty (fileno (FP)))
1257 #endif
1258
1259 #endif /* #ifndef DEFS_H */