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 (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 #ifdef BFD_HOST_64_BIT
  95 /* BFD_HOST_64_BIT is defined for some hosts that don't have long long
  96    (e.g. i386-windows) so try it.  */
  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 (CORE_ADDR lhs, CORE_ADDR rhs);
 110 extern int core_addr_greaterthan (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 (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 (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 /* Languages represented in the symbol table and elsewhere.
 169    This should probably be in language.h, but since enum's can't
 170    be forward declared to satisfy opaque references before their
 171    actual definition, needs to be here. */
 172
 173 enum language
 174   {
 175     language_unknown,           /* Language not known */
 176     language_auto,              /* Placeholder for automatic setting */
 177     language_c,                 /* C */
 178     language_cplus,             /* C++ */
 179     language_java,              /* Java */
 180     language_chill,             /* Chill */
 181     language_fortran,           /* Fortran */
 182     language_m2,                /* Modula-2 */
 183     language_asm,               /* Assembly language */
 184     language_scm                /* Scheme / Guile */
 185   };
 186
 187 enum precision_type
 188   {
 189     single_precision,
 190     double_precision,
 191     unspecified_precision
 192   };
 193
 194 /* the cleanup list records things that have to be undone
 195    if an error happens (descriptors to be closed, memory to be freed, etc.)
 196    Each link in the chain records a function to call and an
 197    argument to give it.
 198
 199    Use make_cleanup to add an element to the cleanup chain.
 200    Use do_cleanups to do all cleanup actions back to a given
 201    point in the chain.  Use discard_cleanups to remove cleanups
 202    from the chain back to a given point, not doing them.  */
 203
 204 struct cleanup
 205   {
 206     struct cleanup *next;
 207     void (*function) (PTR);
 208     PTR arg;
 209   };
 210
 211
 212 /* The ability to declare that a function never returns is useful, but
 213    not really required to compile GDB successfully, so the NORETURN and
 214    ATTR_NORETURN macros normally expand into nothing.  */
 215
 216 /* If compiling with older versions of GCC, a function may be declared
 217    "volatile" to indicate that it does not return.  */
 218
 219 #ifndef NORETURN
 220 #if defined(__GNUC__) \
 221      && (__GNUC__ == 1 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7))
 222 #define NORETURN volatile
 223 #else
 224 #define NORETURN                /* nothing */
 225 #endif
 226 #endif
 227
 228 /* GCC 2.5 and later versions define a function attribute "noreturn",
 229    which is the preferred way to declare that a function never returns.
 230    However GCC 2.7 appears to be the first version in which this fully
 231    works everywhere we use it. */
 232
 233 #ifndef ATTR_NORETURN
 234 #if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 7
 235 #define ATTR_NORETURN __attribute__ ((noreturn))
 236 #else
 237 #define ATTR_NORETURN           /* nothing */
 238 #endif
 239 #endif
 240
 241 #ifndef ATTR_FORMAT
 242 #if defined(__GNUC__) && __GNUC__ >= 2 && __GNUC_MINOR__ >= 4
 243 #define ATTR_FORMAT(type, x, y) __attribute__ ((format(type, x, y)))
 244 #else
 245 #define ATTR_FORMAT(type, x, y) /* nothing */
 246 #endif
 247 #endif
 248
 249 /* Needed for various prototypes */
 250
 251 struct symtab;
 252 struct breakpoint;
 253
 254 /* From blockframe.c */
 255
 256 extern int inside_entry_func (CORE_ADDR);
 257
 258 extern int inside_entry_file (CORE_ADDR addr);
 259
 260 extern int inside_main_func (CORE_ADDR pc);
 261
 262 /* From ch-lang.c, for the moment. (FIXME) */
 263
 264 extern char *chill_demangle (const char *);
 265
 266 /* From utils.c */
 267
 268 extern void initialize_utils (void);
 269
 270 extern void notice_quit (void);
 271
 272 extern int strcmp_iw (const char *, const char *);
 273
 274 extern int subset_compare (char *, char *);
 275
 276 extern char *safe_strerror (int);
 277
 278 extern char *safe_strsignal (int);
 279
 280 extern void init_malloc (void *);
 281
 282 extern void request_quit (int);
 283
 284 extern void do_cleanups (struct cleanup *);
 285 extern void do_final_cleanups (struct cleanup *);
 286 extern void do_my_cleanups (struct cleanup **, struct cleanup *);
 287 extern void do_run_cleanups (struct cleanup *);
 288 extern void do_exec_cleanups (struct cleanup *);
 289 extern void do_exec_error_cleanups (struct cleanup *);
 290
 291 extern void discard_cleanups (struct cleanup *);
 292 extern void discard_final_cleanups (struct cleanup *);
 293 extern void discard_exec_error_cleanups (struct cleanup *);
 294 extern void discard_my_cleanups (struct cleanup **, struct cleanup *);
 295
 296 typedef void (*make_cleanup_func) (void *);
 297
 298 extern struct cleanup *make_cleanup (make_cleanup_func, void *);
 299
 300 extern struct cleanup *make_cleanup_freeargv (char **);
 301
 302 struct gdb_file;
 303 extern struct cleanup *make_cleanup_gdb_file_delete (struct gdb_file *);
 304
 305 extern struct cleanup *make_final_cleanup (make_cleanup_func, void *);
 306
 307 extern struct cleanup *make_my_cleanup (struct cleanup **,
 308                                         make_cleanup_func, void *);
 309
 310 extern struct cleanup *make_run_cleanup (make_cleanup_func, void *);
 311
 312 extern struct cleanup *make_exec_cleanup (make_cleanup_func, void *);
 313 extern struct cleanup *make_exec_error_cleanup (make_cleanup_func, void *);
 314
 315 extern struct cleanup *save_cleanups (void);
 316 extern struct cleanup *save_final_cleanups (void);
 317 extern struct cleanup *save_my_cleanups (struct cleanup **);
 318
 319 extern void restore_cleanups (struct cleanup *);
 320 extern void restore_final_cleanups (struct cleanup *);
 321 extern void restore_my_cleanups (struct cleanup **, struct cleanup *);
 322
 323 extern void free_current_contents (char **);
 324
 325 extern void null_cleanup (PTR);
 326
 327 extern int myread (int, char *, int);
 328
 329 extern int query (char *, ...) ATTR_FORMAT (printf, 1, 2);
 330
 331 #if !defined (USE_MMALLOC)
 332 extern PTR mmalloc (PTR, size_t);
 333 extern PTR mrealloc (PTR, PTR, size_t);
 334 extern void mfree (PTR, PTR);
 335 #endif
 336
 337 extern void init_page_info (void);
 338
 339 /* From demangle.c */
 340
 341 extern void set_demangling_style (char *);
 342
 343 /* From tm.h */
 344
 345 struct type;
 346 typedef int (use_struct_convention_fn) (int gcc_p, struct type * value_type);
 347 extern use_struct_convention_fn generic_use_struct_convention;
 348
 349 typedef unsigned char *(breakpoint_from_pc_fn) (CORE_ADDR * pcptr, int *lenptr);
 350 \f
 351 /* Annotation stuff.  */
 352
 353 extern int annotation_level;    /* in stack.c */
 354 \f
 355 extern void begin_line (void);
 356
 357 extern void wrap_here (char *);
 358
 359 extern void reinitialize_more_filter (void);
 360
 361 struct gdb_file;
 362 typedef struct gdb_file GDB_FILE;       /* deprecated */
 363
 364 /* Normal results */
 365 extern GDB_FILE *gdb_stdout;
 366 /* Serious error notifications */
 367 extern GDB_FILE *gdb_stderr;
 368 /* Log/debug/trace messages that should bypass normal stdout/stderr
 369    filtering.  For momement, always call this stream using
 370    *_unfiltered. In the very near future that restriction shall be
 371    removed - either call shall be unfiltered. (cagney 1999-06-13). */
 372 extern GDB_FILE *gdb_stdlog;
 373 /* Target output that should bypass normal stdout/stderr filtering.
 374    For momement, always call this stream using *_unfiltered. In the
 375    very near future that restriction shall be removed - either call
 376    shall be unfiltered. (cagney 1999-07-02). */
 377 extern GDB_FILE *gdb_stdtarg;
 378
 379 #if defined(TUI)
 380 #include "tui.h"
 381 #include "tuiCommand.h"
 382 #include "tuiData.h"
 383 #include "tuiIO.h"
 384 #include "tuiLayout.h"
 385 #include "tuiWin.h"
 386 #endif
 387
 388 /* Create a generic gdb_file object with null methods. */
 389
 390 extern struct gdb_file *gdb_file_new (void);
 391
 392 /* Override methods used by specific implementations of a GDB_FILE
 393    object. */
 394
 395 typedef void (gdb_file_flush_ftype) (struct gdb_file * stream);
 396 extern void set_gdb_file_flush (struct gdb_file *stream, gdb_file_flush_ftype * flush);
 397
 398 /* NOTE: Both fputs and write methods are available. Default
 399    implementations that mapping one onto the other are included. */
 400 typedef void (gdb_file_write_ftype) (struct gdb_file * stream, const char *buf, long length_buf);
 401 extern void set_gdb_file_write (struct gdb_file *stream, gdb_file_write_ftype *fputs);
 402
 403 typedef void (gdb_file_fputs_ftype) (const char *, struct gdb_file * stream);
 404 extern void set_gdb_file_fputs (struct gdb_file *stream, gdb_file_fputs_ftype * fputs);
 405
 406 typedef int (gdb_file_isatty_ftype) (struct gdb_file * stream);
 407 extern void set_gdb_file_isatty (struct gdb_file *stream, gdb_file_isatty_ftype * isatty);
 408
 409 typedef void (gdb_file_rewind_ftype) (struct gdb_file * stream);
 410 extern void set_gdb_file_rewind (struct gdb_file *stream, gdb_file_rewind_ftype * rewind);
 411
 412 typedef void (gdb_file_put_method_ftype) (void *object, const char *buffer, long length_buffer);
 413 typedef void (gdb_file_put_ftype) (struct gdb_file *stream, gdb_file_put_method_ftype * method, void *context);
 414 extern void set_gdb_file_put (struct gdb_file *stream, gdb_file_put_ftype * put);
 415
 416 typedef void (gdb_file_delete_ftype) (struct gdb_file * stream);
 417 extern void set_gdb_file_data (struct gdb_file *stream, void *data, gdb_file_delete_ftype * delete);
 418
 419 extern void *gdb_file_data (struct gdb_file *file);
 420
 421
 422 /* Open the specified FILE as a gdb_file. */
 423 extern struct gdb_file *stdio_fileopen (FILE *file);
 424
 425 /* Open NAME returning a GDB_FILE. */
 426 extern GDB_FILE *gdb_fopen (char *name, char *mode);
 427
 428 /* Create/open a memory based file. Can be used as a scratch
 429    buffer for collecting output. */
 430 extern struct gdb_file *mem_fileopen (void);
 431
 432 extern void gdb_flush (GDB_FILE *);
 433
 434 extern void gdb_file_delete (struct gdb_file *stream);
 435
 436 extern void gdb_file_rewind (struct gdb_file *stream);
 437
 438 extern int gdb_file_isatty (GDB_FILE *);
 439
 440 extern void gdb_file_write (struct gdb_file *file, const char *buf, long length_buf);
 441
 442 /* NOTE: copies left to right */
 443 extern void gdb_file_put (struct gdb_file *src, gdb_file_put_method_ftype *write, void *dest);
 444
 445 /* Returns a freshly allocated buffer containing the entire contents
 446    of FILE (as determined by gdb_file_put()) with a NUL character
 447    appended.  LENGTH is set to the size of the buffer minus that
 448    appended NUL. */
 449 extern char *gdb_file_xstrdup (struct gdb_file *file, long *length);
 450
 451 /* More generic printf like operations */
 452
 453 extern void fputs_filtered (const char *, GDB_FILE *);
 454
 455 extern void fputs_unfiltered (const char *, GDB_FILE *);
 456
 457 extern int fputc_filtered (int c, GDB_FILE *);
 458
 459 extern int fputc_unfiltered (int c, GDB_FILE *);
 460
 461 extern int putchar_unfiltered (int c);
 462
 463 extern void puts_filtered (const char *);
 464
 465 extern void puts_unfiltered (const char *);
 466
 467 extern void puts_debug (char *prefix, char *string, char *suffix);
 468
 469 extern void vprintf_filtered (const char *, va_list) ATTR_FORMAT (printf, 1, 0);
 470
 471 extern void vfprintf_filtered (GDB_FILE *, const char *, va_list) ATTR_FORMAT (printf, 2, 0);
 472
 473 extern void fprintf_filtered (GDB_FILE *, const char *, ...) ATTR_FORMAT (printf, 2, 3);
 474
 475 extern void fprintfi_filtered (int, GDB_FILE *, const char *, ...) ATTR_FORMAT (printf, 3, 4);
 476
 477 extern void printf_filtered (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 478
 479 extern void printfi_filtered (int, const char *, ...) ATTR_FORMAT (printf, 2, 3);
 480
 481 extern void vprintf_unfiltered (const char *, va_list) ATTR_FORMAT (printf, 1, 0);
 482
 483 extern void vfprintf_unfiltered (GDB_FILE *, const char *, va_list) ATTR_FORMAT (printf, 2, 0);
 484
 485 extern void fprintf_unfiltered (GDB_FILE *, const char *, ...) ATTR_FORMAT (printf, 2, 3);
 486
 487 extern void printf_unfiltered (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 488
 489 /* #if defined (TUI) */
 490 /* DEPRECATED: Only the TUI should use these methods. */
 491 extern struct gdb_file *tui_fileopen (FILE *);
 492 extern struct gdb_file *tui_sfileopen (int);
 493 extern char *tui_file_get_strbuf (struct gdb_file *);
 494 extern void tui_file_adjust_strbuf (int, struct gdb_file *);
 495 /* #endif */
 496
 497 extern void print_spaces (int, GDB_FILE *);
 498
 499 extern void print_spaces_filtered (int, GDB_FILE *);
 500
 501 extern char *n_spaces (int);
 502
 503 extern void fputstr_filtered (const char *str, int quotr, GDB_FILE * stream);
 504
 505 extern void fputstr_unfiltered (const char *str, int quotr, GDB_FILE * stream);
 506
 507 extern void fputstrn_unfiltered (const char *str, int n, int quotr, GDB_FILE * stream);
 508
 509 /* Display the host ADDR on STREAM formatted as ``0x%x''. */
 510 extern void gdb_print_host_address (void *addr, struct gdb_file *stream);
 511
 512 /* Convert a CORE_ADDR into a HEX string.  paddr() is like %08lx.
 513    paddr_nz() is like %lx.  paddr_u() is like %lu. paddr_width() is
 514    for ``%*''. */
 515 extern int strlen_paddr (void);
 516 extern char *paddr (CORE_ADDR addr);
 517 extern char *paddr_nz (CORE_ADDR addr);
 518 extern char *paddr_u (CORE_ADDR addr);
 519 extern char *paddr_d (LONGEST addr);
 520
 521 typedef bfd_vma t_reg;
 522 extern char *preg (t_reg reg);
 523 extern char *preg_nz (t_reg reg);
 524
 525 extern void fprintf_symbol_filtered (GDB_FILE *, char *,
 526                                      enum language, int);
 527
 528 extern NORETURN void perror_with_name (char *) ATTR_NORETURN;
 529
 530 extern void print_sys_errmsg (char *, int);
 531
 532 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 533    "const char *" in unistd.h, so we can't declare the argument
 534    as "char *".  */
 535
 536 extern char *re_comp (const char *);
 537
 538 /* From symfile.c */
 539
 540 extern void symbol_file_command (char *, int);
 541
 542 /* Remote targets may wish to use this as their load function.  */
 543 extern void generic_load (char *name, int from_tty);
 544
 545 /* Summarise a download */
 546 extern void print_transfer_performance (struct gdb_file *stream,
 547                                         unsigned long data_count,
 548                                         unsigned long write_count,
 549                                         unsigned long time_count);
 550
 551 /* From top.c */
 552
 553 typedef void initialize_file_ftype (void);
 554
 555 extern char *skip_quoted (char *);
 556
 557 extern char *gdb_readline (char *);
 558
 559 extern char *command_line_input (char *, int, char *);
 560
 561 extern void print_prompt (void);
 562
 563 extern int input_from_terminal_p (void);
 564
 565 extern int info_verbose;
 566
 567 /* From printcmd.c */
 568
 569 extern void set_next_address (CORE_ADDR);
 570
 571 extern void print_address_symbolic (CORE_ADDR, GDB_FILE *, int,
 572                                     char *);
 573
 574 extern void print_address_numeric (CORE_ADDR, int, GDB_FILE *);
 575
 576 extern void print_address (CORE_ADDR, GDB_FILE *);
 577
 578 /* From source.c */
 579
 580 extern int openp (char *, int, char *, int, int, char **);
 581
 582 extern int source_full_path_of (char *, char **);
 583
 584 extern void mod_path (char *, char **);
 585
 586 extern void directory_command (char *, int);
 587
 588 extern void init_source_path (void);
 589
 590 extern char *symtab_to_filename (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 (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 (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 (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 (char *, int);
 667
 668 extern void free_command_lines (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) (struct continuation_arg *);
 685     struct continuation_arg *arg_list;
 686     struct continuation *next;
 687   };
 688 struct continuation continuation;
 689
 690 /* In infrun.c. */
 691 extern struct continuation *cmd_continuation;
 692
 693 /* From utils.c */
 694 extern void add_continuation (void (*)(struct continuation_arg *),
 695                               struct continuation_arg *);
 696 extern void do_all_continuations (void);
 697 extern void discard_all_continuations (void);
 698
 699 /* String containing the current directory (what getwd would return).  */
 700
 701 extern char *current_directory;
 702
 703 /* Default radixes for input and output.  Only some values supported.  */
 704 extern unsigned input_radix;
 705 extern unsigned output_radix;
 706
 707 /* Possibilities for prettyprint parameters to routines which print
 708    things.  Like enum language, this should be in value.h, but needs
 709    to be here for the same reason.  FIXME:  If we can eliminate this
 710    as an arg to LA_VAL_PRINT, then we can probably move it back to
 711    value.h. */
 712
 713 enum val_prettyprint
 714   {
 715     Val_no_prettyprint = 0,
 716     Val_prettyprint,
 717     /* Use the default setting which the user has specified.  */
 718     Val_pretty_default
 719   };
 720 \f
 721
 722 /* Host machine definition.  This will be a symlink to one of the
 723    xm-*.h files, built by the `configure' script.  */
 724
 725 #include "xm.h"
 726
 727 /* Native machine support.  This will be a symlink to one of the
 728    nm-*.h files, built by the `configure' script.  */
 729
 730 #include "nm.h"
 731
 732 /* Target machine definition.  This will be a symlink to one of the
 733    tm-*.h files, built by the `configure' script.  */
 734
 735 #include "tm.h"
 736
 737 /* If the xm.h file did not define the mode string used to open the
 738    files, assume that binary files are opened the same way as text
 739    files */
 740 #ifndef FOPEN_RB
 741 #include "fopen-same.h"
 742 #endif
 743
 744 /* Microsoft C can't deal with const pointers */
 745
 746 #ifdef _MSC_VER
 747 #define CONST_PTR
 748 #else
 749 #define CONST_PTR const
 750 #endif
 751
 752 /*
 753  * Allow things in gdb to be declared "volatile".  If compiling ANSI, it
 754  * just works.  If compiling with gcc but non-ansi, redefine to __volatile__.
 755  * If non-ansi, non-gcc, then eliminate "volatile" entirely, making those
 756  * objects be read-write rather than read-only.
 757  */
 758
 759 #ifndef volatile
 760 #ifndef __STDC__
 761 #ifdef __GNUC__
 762 #define volatile __volatile__
 763 #else
 764 #define volatile                /* nothing */
 765 #endif /* GNUC */
 766 #endif /* STDC */
 767 #endif /* volatile */
 768
 769 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 770    FIXME: Assumes 2's complement arithmetic */
 771
 772 #if !defined (UINT_MAX)
 773 #define UINT_MAX ((unsigned int)(~0))   /* 0xFFFFFFFF for 32-bits */
 774 #endif
 775
 776 #if !defined (INT_MAX)
 777 #define INT_MAX ((int)(UINT_MAX >> 1))  /* 0x7FFFFFFF for 32-bits */
 778 #endif
 779
 780 #if !defined (INT_MIN)
 781 #define INT_MIN ((int)((int) ~0 ^ INT_MAX))     /* 0x80000000 for 32-bits */
 782 #endif
 783
 784 #if !defined (ULONG_MAX)
 785 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 786 #endif
 787
 788 #if !defined (LONG_MAX)
 789 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 790 #endif
 791
 792 #if !defined (ULONGEST_MAX)
 793 #define ULONGEST_MAX (~(ULONGEST)0)        /* 0xFFFFFFFFFFFFFFFF for 32-bits */
 794 #endif
 795
 796 #if !defined (LONGEST_MAX)                 /* 0x7FFFFFFFFFFFFFFF for 32-bits */
 797 #define LONGEST_MAX ((LONGEST)(ULONGEST_MAX >> 1))
 798 #endif
 799
 800 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 801    arguments to a function, number in a value history, register number, etc.)
 802    where the value must not be larger than can fit in an int.  */
 803
 804 extern int longest_to_int (LONGEST);
 805
 806 /* Assorted functions we can declare, now that const and volatile are
 807    defined.  */
 808
 809 extern char *savestring (const char *, int);
 810
 811 extern char *msavestring (void *, const char *, int);
 812
 813 extern char *strsave (const char *);
 814
 815 extern char *mstrsave (void *, const char *);
 816
 817 /* FIXME; was long, but this causes compile errors in msvc if already
 818    defined */
 819 #ifdef _MSC_VER
 820 extern PTR xmmalloc (PTR, size_t);
 821 extern PTR xmrealloc (PTR, PTR, size_t);
 822 #else
 823 extern PTR xmmalloc (PTR, long);
 824 extern PTR xmrealloc (PTR, PTR, long);
 825 #endif
 826
 827 extern int parse_escape (char **);
 828
 829 /* Message to be printed before the error message, when an error occurs.  */
 830
 831 extern char *error_pre_print;
 832
 833 /* Message to be printed before the error message, when an error occurs.  */
 834
 835 extern char *quit_pre_print;
 836
 837 /* Message to be printed before the warning message, when a warning occurs.  */
 838
 839 extern char *warning_pre_print;
 840
 841 extern NORETURN void verror (const char *fmt, va_list ap) ATTR_NORETURN;
 842
 843 extern NORETURN void error (const char *fmt, ...) ATTR_NORETURN;
 844
 845 /* DEPRECATED: Use error(), verror() or error_stream(). */
 846 extern NORETURN void error_begin (void);
 847
 848 extern NORETURN void error_stream (GDB_FILE *) ATTR_NORETURN;
 849
 850 /* Returns a freshly allocate buffer containing the last error
 851    message.  */
 852 extern char *error_last_message (void);
 853
 854 extern NORETURN void internal_verror (const char *, va_list ap) ATTR_NORETURN;
 855
 856 extern NORETURN void internal_error (char *, ...) ATTR_NORETURN;
 857
 858 extern NORETURN void nomem (long) ATTR_NORETURN;
 859
 860 /* Reasons for calling return_to_top_level.  */
 861
 862 enum return_reason
 863   {
 864     /* User interrupt.  */
 865     RETURN_QUIT,
 866     /* Any other error.  */
 867     RETURN_ERROR
 868   };
 869
 870 #define ALL_CLEANUPS    ((struct cleanup *)0)
 871
 872 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 873 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 874 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 875 typedef int return_mask;
 876
 877 extern NORETURN void return_to_top_level (enum return_reason) ATTR_NORETURN;
 878
 879 /* If CATCH_ERRORS_FTYPE throws an error, catch_errors() returns zero
 880    otherwize the result from CATCH_ERRORS_FTYPE is returned. It is
 881    probably useful for CATCH_ERRORS_FTYPE to always return a non-zero
 882    value. It's unfortunate that, catch_errors() does not return an
 883    indication of the exact exception that it caught - quit_flag might
 884    help. */
 885
 886 typedef int (catch_errors_ftype) (PTR);
 887 extern int catch_errors (catch_errors_ftype *, PTR, char *, return_mask);
 888
 889 /* Template to catch_errors() that wraps calls to command
 890    functions. */
 891
 892 typedef void (catch_command_errors_ftype) (char *, int);
 893 extern int catch_command_errors (catch_command_errors_ftype *func, char *command, int from_tty, return_mask);
 894
 895 extern void warning_begin (void);
 896
 897 extern void warning (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 898
 899 /* Global functions from other, non-gdb GNU thingies.
 900    Libiberty thingies are no longer declared here.  We include libiberty.h
 901    above, instead.  */
 902
 903 #ifndef GETENV_PROVIDED
 904 extern char *getenv (const char *);
 905 #endif
 906
 907 /* From other system libraries */
 908
 909 #ifdef HAVE_STDDEF_H
 910 #include <stddef.h>
 911 #endif
 912
 913 #ifdef HAVE_STDLIB_H
 914 #if defined(_MSC_VER) && !defined(__cplusplus)
 915 /* msvc defines these in stdlib.h for c code */
 916 #undef min
 917 #undef max
 918 #endif
 919 #include <stdlib.h>
 920 #endif
 921 #ifndef min
 922 #define min(a, b) ((a) < (b) ? (a) : (b))
 923 #endif
 924 #ifndef max
 925 #define max(a, b) ((a) > (b) ? (a) : (b))
 926 #endif
 927
 928
 929 /* We take the address of fclose later, but some stdio's forget
 930    to declare this.  We can't always declare it since there's
 931    no way to declare the parameters without upsetting some compiler
 932    somewhere. */
 933
 934 #ifndef FCLOSE_PROVIDED
 935 extern int fclose (FILE *);
 936 #endif
 937
 938 #ifndef atof
 939 extern double atof (const char *);      /* X3.159-1989  4.10.1.1 */
 940 #endif
 941
 942 #ifndef MALLOC_INCOMPATIBLE
 943
 944 #ifdef NEED_DECLARATION_MALLOC
 945 extern PTR malloc ();
 946 #endif
 947
 948 #ifdef NEED_DECLARATION_REALLOC
 949 extern PTR realloc ();
 950 #endif
 951
 952 #ifdef NEED_DECLARATION_FREE
 953 extern void free ();
 954 #endif
 955
 956 #endif /* MALLOC_INCOMPATIBLE */
 957
 958 /* Various possibilities for alloca.  */
 959 #ifndef alloca
 960 #ifdef __GNUC__
 961 #define alloca __builtin_alloca
 962 #else /* Not GNU C */
 963 #ifdef HAVE_ALLOCA_H
 964 #include <alloca.h>
 965 #else
 966 #ifdef _AIX
 967 #pragma alloca
 968 #else
 969
 970 /* We need to be careful not to declare this in a way which conflicts with
 971    bison.  Bison never declares it as char *, but under various circumstances
 972    (like __hpux) we need to use void *.  */
 973 #if defined (__STDC__) || defined (__hpux)
 974 extern void *alloca ();
 975 #else /* Don't use void *.  */
 976 extern char *alloca ();
 977 #endif /* Don't use void *.  */
 978 #endif /* Not _AIX */
 979 #endif /* Not HAVE_ALLOCA_H */
 980 #endif /* Not GNU C */
 981 #endif /* alloca not defined */
 982
 983 /* HOST_BYTE_ORDER must be defined to one of these.  */
 984
 985 #ifdef HAVE_ENDIAN_H
 986 #include <endian.h>
 987 #endif
 988
 989 #if !defined (BIG_ENDIAN)
 990 #define BIG_ENDIAN 4321
 991 #endif
 992
 993 #if !defined (LITTLE_ENDIAN)
 994 #define LITTLE_ENDIAN 1234
 995 #endif
 996
 997 /* Dynamic target-system-dependent parameters for GDB. */
 998 #include "gdbarch.h"
 999
1000 /* Static target-system-dependent parameters for GDB. */
1001
1002 /* Number of bits in a char or unsigned char for the target machine.
1003    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
1004 #if !defined (TARGET_CHAR_BIT)
1005 #define TARGET_CHAR_BIT 8
1006 #endif
1007
1008 /* Number of bits in a short or unsigned short for the target machine. */
1009 #if !defined (TARGET_SHORT_BIT)
1010 #define TARGET_SHORT_BIT (2 * TARGET_CHAR_BIT)
1011 #endif
1012
1013 /* Number of bits in an int or unsigned int for the target machine. */
1014 #if !defined (TARGET_INT_BIT)
1015 #define TARGET_INT_BIT (4 * TARGET_CHAR_BIT)
1016 #endif
1017
1018 /* Number of bits in a long or unsigned long for the target machine. */
1019 #if !defined (TARGET_LONG_BIT)
1020 #define TARGET_LONG_BIT (4 * TARGET_CHAR_BIT)
1021 #endif
1022
1023 /* Number of bits in a long long or unsigned long long for the target machine. */
1024 #if !defined (TARGET_LONG_LONG_BIT)
1025 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
1026 #endif
1027
1028 /* Number of bits in a float for the target machine. */
1029 #if !defined (TARGET_FLOAT_BIT)
1030 #define TARGET_FLOAT_BIT (4 * TARGET_CHAR_BIT)
1031 #endif
1032
1033 /* Number of bits in a double for the target machine. */
1034 #if !defined (TARGET_DOUBLE_BIT)
1035 #define TARGET_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
1036 #endif
1037
1038 /* Number of bits in a long double for the target machine.  */
1039 #if !defined (TARGET_LONG_DOUBLE_BIT)
1040 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
1041 #endif
1042
1043 /* Number of bits in a pointer for the target machine */
1044 #if !defined (TARGET_PTR_BIT)
1045 #define TARGET_PTR_BIT TARGET_INT_BIT
1046 #endif
1047
1048 /* If we picked up a copy of CHAR_BIT from a configuration file
1049    (which may get it by including <limits.h>) then use it to set
1050    the number of bits in a host char.  If not, use the same size
1051    as the target. */
1052
1053 #if defined (CHAR_BIT)
1054 #define HOST_CHAR_BIT CHAR_BIT
1055 #else
1056 #define HOST_CHAR_BIT TARGET_CHAR_BIT
1057 #endif
1058
1059 /* The bit byte-order has to do just with numbering of bits in
1060    debugging symbols and such.  Conceptually, it's quite separate
1061    from byte/word byte order.  */
1062
1063 #if !defined (BITS_BIG_ENDIAN)
1064 #define BITS_BIG_ENDIAN (TARGET_BYTE_ORDER == BIG_ENDIAN)
1065 #endif
1066
1067 /* In findvar.c.  */
1068
1069 extern LONGEST extract_signed_integer (void *, int);
1070
1071 extern ULONGEST extract_unsigned_integer (void *, int);
1072
1073 extern int extract_long_unsigned_integer (void *, int, LONGEST *);
1074
1075 extern CORE_ADDR extract_address (void *, int);
1076
1077 extern void store_signed_integer (PTR, int, LONGEST);
1078
1079 extern void store_unsigned_integer (PTR, int, ULONGEST);
1080
1081 extern void store_address (PTR, int, LONGEST);
1082
1083 /* Setup definitions for host and target floating point formats.  We need to
1084    consider the format for `float', `double', and `long double' for both target
1085    and host.  We need to do this so that we know what kind of conversions need
1086    to be done when converting target numbers to and from the hosts DOUBLEST
1087    data type.  */
1088
1089 /* This is used to indicate that we don't know the format of the floating point
1090    number.  Typically, this is useful for native ports, where the actual format
1091    is irrelevant, since no conversions will be taking place.  */
1092
1093 extern const struct floatformat floatformat_unknown;
1094
1095 #if HOST_BYTE_ORDER == BIG_ENDIAN
1096 #ifndef HOST_FLOAT_FORMAT
1097 #define HOST_FLOAT_FORMAT &floatformat_ieee_single_big
1098 #endif
1099 #ifndef HOST_DOUBLE_FORMAT
1100 #define HOST_DOUBLE_FORMAT &floatformat_ieee_double_big
1101 #endif
1102 #else /* LITTLE_ENDIAN */
1103 #ifndef HOST_FLOAT_FORMAT
1104 #define HOST_FLOAT_FORMAT &floatformat_ieee_single_little
1105 #endif
1106 #ifndef HOST_DOUBLE_FORMAT
1107 #define HOST_DOUBLE_FORMAT &floatformat_ieee_double_little
1108 #endif
1109 #endif
1110
1111 #ifndef HOST_LONG_DOUBLE_FORMAT
1112 #define HOST_LONG_DOUBLE_FORMAT &floatformat_unknown
1113 #endif
1114
1115 #ifndef TARGET_FLOAT_FORMAT
1116 #define TARGET_FLOAT_FORMAT (TARGET_BYTE_ORDER == BIG_ENDIAN \
1117                              ? &floatformat_ieee_single_big \
1118                              : &floatformat_ieee_single_little)
1119 #endif
1120 #ifndef TARGET_DOUBLE_FORMAT
1121 #define TARGET_DOUBLE_FORMAT (TARGET_BYTE_ORDER == BIG_ENDIAN \
1122                               ? &floatformat_ieee_double_big \
1123                               : &floatformat_ieee_double_little)
1124 #endif
1125
1126 #ifndef TARGET_LONG_DOUBLE_FORMAT
1127 #define TARGET_LONG_DOUBLE_FORMAT &floatformat_unknown
1128 #endif
1129
1130 /* Use `long double' if the host compiler supports it.  (Note that this is not
1131    necessarily any longer than `double'.  On SunOS/gcc, it's the same as
1132    double.)  This is necessary because GDB internally converts all floating
1133    point values to the widest type supported by the host.
1134
1135    There are problems however, when the target `long double' is longer than the
1136    host's `long double'.  In general, we'll probably reduce the precision of
1137    any such values and print a warning.  */
1138
1139 #ifdef HAVE_LONG_DOUBLE
1140 typedef long double DOUBLEST;
1141 #else
1142 typedef double DOUBLEST;
1143 #endif
1144
1145 extern void floatformat_to_doublest (const struct floatformat *,
1146                                      char *, DOUBLEST *);
1147 extern void floatformat_from_doublest (const struct floatformat *,
1148                                        DOUBLEST *, char *);
1149 extern DOUBLEST extract_floating (void *, int);
1150
1151 extern void store_floating (void *, int, DOUBLEST);
1152 \f
1153 /* On some machines there are bits in addresses which are not really
1154    part of the address, but are used by the kernel, the hardware, etc.
1155    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
1156    so we get a "real" address such as one would find in a symbol
1157    table.  This is used only for addresses of instructions, and even then
1158    I'm not sure it's used in all contexts.  It exists to deal with there
1159    being a few stray bits in the PC which would mislead us, not as some sort
1160    of generic thing to handle alignment or segmentation (it's possible it
1161    should be in TARGET_READ_PC instead). */
1162 #if !defined (ADDR_BITS_REMOVE)
1163 #define ADDR_BITS_REMOVE(addr) (addr)
1164 #endif /* No ADDR_BITS_REMOVE.  */
1165
1166 /* From valops.c */
1167
1168 extern CORE_ADDR push_bytes (CORE_ADDR, char *, int);
1169
1170 extern CORE_ADDR push_word (CORE_ADDR, ULONGEST);
1171
1172 extern int watchdog;
1173
1174 /* Hooks for alternate command interfaces.  */
1175 struct target_waitstatus;
1176 struct cmd_list_element;
1177
1178 /* Should the asynchronous variant of the interpreter (using the
1179    event-loop) be enabled? */
1180 extern int event_loop_p;
1181
1182 extern void (*init_ui_hook) (char *argv0);
1183 extern void (*command_loop_hook) (void);
1184 /* NOTE: cagney/1999-10-14: fputs_unfiltered_hook is deprecated.
1185    Instead code wanting to control GDB's output should be overriding
1186    the gdb_std* files. */
1187 extern void (*fputs_unfiltered_hook) (const char *linebuffer,
1188                                       GDB_FILE * stream);
1189 extern void (*print_frame_info_listing_hook) (struct symtab * s,
1190                                               int line, int stopline,
1191                                               int noerror);
1192 extern struct frame_info *parse_frame_specification (char *frame_exp);
1193 extern int (*query_hook) (const char *, va_list);
1194 extern void (*warning_hook) (const char *, va_list);
1195 extern void (*flush_hook) (GDB_FILE * stream);
1196 extern void (*create_breakpoint_hook) (struct breakpoint * b);
1197 extern void (*delete_breakpoint_hook) (struct breakpoint * bpt);
1198 extern void (*modify_breakpoint_hook) (struct breakpoint * bpt);
1199 extern void (*interactive_hook) (void);
1200 extern void (*registers_changed_hook) (void);
1201 extern void (*readline_begin_hook) (char *,...);
1202 extern char *(*readline_hook) (char *);
1203 extern void (*readline_end_hook) (void);
1204 extern void (*register_changed_hook) (int regno);
1205 extern void (*memory_changed_hook) (CORE_ADDR addr, int len);
1206 extern void (*context_hook) (int);
1207 extern int (*target_wait_hook) (int pid, struct target_waitstatus * status);
1208
1209 extern void (*attach_hook) (void);
1210 extern void (*detach_hook) (void);
1211 extern void (*call_command_hook) (struct cmd_list_element * c,
1212                                   char *cmd, int from_tty);
1213
1214 extern void (*set_hook) (struct cmd_list_element * c);
1215
1216 extern NORETURN void (*error_hook) (void) ATTR_NORETURN;
1217
1218 extern void (*error_begin_hook) (void);
1219
1220 extern int (*ui_load_progress_hook) (const char *section, unsigned long num);
1221
1222
1223 /* Inhibit window interface if non-zero. */
1224
1225 extern int use_windows;
1226
1227 /* Symbolic definitions of filename-related things.  */
1228 /* FIXME, this doesn't work very well if host and executable
1229    filesystems conventions are different.  */
1230
1231 #ifndef DIRNAME_SEPARATOR
1232 #define DIRNAME_SEPARATOR ':'
1233 #endif
1234
1235 #ifndef SLASH_P
1236 #if defined(__GO32__)||defined(_WIN32)
1237 #define SLASH_P(X) ((X)=='\\')
1238 #else
1239 #define SLASH_P(X) ((X)=='/')
1240 #endif
1241 #endif
1242
1243 #ifndef SLASH_CHAR
1244 #if defined(__GO32__)||defined(_WIN32)
1245 #define SLASH_CHAR '\\'
1246 #else
1247 #define SLASH_CHAR '/'
1248 #endif
1249 #endif
1250
1251 #ifndef SLASH_STRING
1252 #if defined(__GO32__)||defined(_WIN32)
1253 #define SLASH_STRING "\\"
1254 #else
1255 #define SLASH_STRING "/"
1256 #endif
1257 #endif
1258
1259 #ifndef ROOTED_P
1260 #define ROOTED_P(X) (SLASH_P((X)[0]))
1261 #endif
1262
1263 /* On some systems, PIDGET is defined to extract the inferior pid from
1264    an internal pid that has the thread id and pid in seperate bit
1265    fields.  If not defined, then just use the entire internal pid as
1266    the actual pid. */
1267
1268 #ifndef PIDGET
1269 #define PIDGET(pid) (pid)
1270 #endif
1271
1272 /* If under Cygwin, provide backwards compatibility with older
1273    Cygwin compilers that don't define the current cpp define. */
1274 #ifdef __CYGWIN32__
1275 #ifndef __CYGWIN__
1276 #define __CYGWIN__
1277 #endif
1278 #endif
1279
1280 /* Define well known filenos if the system does not define them.  */
1281 #ifndef STDIN_FILENO
1282 #define STDIN_FILENO   0
1283 #endif
1284 #ifndef STDOUT_FILENO
1285 #define STDOUT_FILENO  1
1286 #endif
1287 #ifndef STDERR_FILENO
1288 #define STDERR_FILENO  2
1289 #endif
1290
1291 /* If this definition isn't overridden by the header files, assume
1292    that isatty and fileno exist on this system.  */
1293 #ifndef ISATTY
1294 #define ISATTY(FP)      (isatty (fileno (FP)))
1295 #endif
1296
1297 #endif /* #ifndef DEFS_H */