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 /* 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) PARAMS ((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 PARAMS ((CORE_ADDR));
 257
 258 extern int inside_entry_file PARAMS ((CORE_ADDR addr));
 259
 260 extern int inside_main_func PARAMS ((CORE_ADDR pc));
 261
 262 /* From ch-lang.c, for the moment. (FIXME) */
 263
 264 extern char *chill_demangle PARAMS ((const char *));
 265
 266 /* From utils.c */
 267
 268 extern void initialize_utils PARAMS ((void));
 269
 270 extern void notice_quit PARAMS ((void));
 271
 272 extern int strcmp_iw PARAMS ((const char *, const char *));
 273
 274 extern int subset_compare PARAMS ((char *, char *));
 275
 276 extern char *safe_strerror PARAMS ((int));
 277
 278 extern char *safe_strsignal PARAMS ((int));
 279
 280 extern void init_malloc PARAMS ((void *));
 281
 282 extern void request_quit PARAMS ((int));
 283
 284 extern void do_cleanups PARAMS ((struct cleanup *));
 285 extern void do_final_cleanups PARAMS ((struct cleanup *));
 286 extern void do_my_cleanups PARAMS ((struct cleanup **, struct cleanup *));
 287 extern void do_run_cleanups PARAMS ((struct cleanup *));
 288 extern void do_exec_cleanups PARAMS ((struct cleanup *));
 289 extern void do_exec_error_cleanups PARAMS ((struct cleanup *));
 290
 291 extern void discard_cleanups PARAMS ((struct cleanup *));
 292 extern void discard_final_cleanups PARAMS ((struct cleanup *));
 293 extern void discard_exec_error_cleanups PARAMS ((struct cleanup *));
 294 extern void discard_my_cleanups PARAMS ((struct cleanup **, struct cleanup *));
 295
 296 typedef void (*make_cleanup_func) PARAMS ((void *));
 297
 298 extern struct cleanup *make_cleanup PARAMS ((make_cleanup_func, void *));
 299
 300 extern struct cleanup *make_cleanup_freeargv PARAMS ((char **));
 301
 302 extern struct cleanup *make_final_cleanup PARAMS ((make_cleanup_func, void *));
 303
 304 extern struct cleanup *make_my_cleanup PARAMS ((struct cleanup **,
 305                                                 make_cleanup_func, void *));
 306
 307 extern struct cleanup *make_run_cleanup PARAMS ((make_cleanup_func, void *));
 308
 309 extern struct cleanup *make_exec_cleanup PARAMS ((make_cleanup_func, void *));
 310 extern struct cleanup *make_exec_error_cleanup PARAMS ((make_cleanup_func, void *));
 311
 312 extern struct cleanup *save_cleanups PARAMS ((void));
 313 extern struct cleanup *save_final_cleanups PARAMS ((void));
 314 extern struct cleanup *save_my_cleanups PARAMS ((struct cleanup **));
 315
 316 extern void restore_cleanups PARAMS ((struct cleanup *));
 317 extern void restore_final_cleanups PARAMS ((struct cleanup *));
 318 extern void restore_my_cleanups PARAMS ((struct cleanup **, struct cleanup *));
 319
 320 extern void free_current_contents PARAMS ((char **));
 321
 322 extern void null_cleanup PARAMS ((PTR));
 323
 324 extern int myread PARAMS ((int, char *, int));
 325
 326 extern int query PARAMS((char *, ...))
 327      ATTR_FORMAT(printf, 1, 2);
 328
 329 #if !defined (USE_MMALLOC)
 330 extern PTR mmalloc PARAMS ((PTR, size_t));
 331 extern PTR mrealloc PARAMS ((PTR, PTR, size_t));
 332 extern void mfree PARAMS ((PTR, PTR));
 333 #endif
 334
 335 extern void init_page_info PARAMS ((void));
 336
 337 /* From demangle.c */
 338
 339 extern void set_demangling_style PARAMS ((char *));
 340
 341 /* From tm.h */
 342
 343 struct type;
 344 typedef int (use_struct_convention_fn) PARAMS ((int gcc_p, struct type *value_type));
 345 extern use_struct_convention_fn generic_use_struct_convention;
 346
 347 typedef unsigned char *(breakpoint_from_pc_fn) PARAMS ((CORE_ADDR *pcptr, int *lenptr));
 348
 349
 350 \f
 351 /* Annotation stuff.  */
 352
 353 extern int annotation_level; /* in stack.c */
 354 \f
 355 extern void begin_line PARAMS ((void));
 356
 357 extern void wrap_here PARAMS ((char *));
 358
 359 extern void reinitialize_more_filter PARAMS ((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 new gdb_file with the specified methods. */
 389
 390 typedef void (gdb_file_flush_ftype) PARAMS ((struct gdb_file *stream));
 391 extern void set_gdb_file_flush PARAMS ((struct gdb_file *stream, gdb_file_flush_ftype *flush));
 392
 393 typedef void (gdb_file_fputs_ftype) PARAMS ((const char *, struct gdb_file *stream));
 394 extern void set_gdb_file_fputs PARAMS ((struct gdb_file *stream, gdb_file_fputs_ftype *fputs));
 395
 396 typedef int (gdb_file_isatty_ftype) PARAMS ((struct gdb_file *stream));
 397 extern void set_gdb_file_isatty PARAMS ((struct gdb_file *stream, gdb_file_isatty_ftype *isatty));
 398
 399 typedef void (gdb_file_rewind_ftype) PARAMS ((struct gdb_file *stream));
 400 extern void set_gdb_file_rewind PARAMS ((struct gdb_file *stream, gdb_file_rewind_ftype *rewind));
 401
 402 typedef void (gdb_file_put_ftype) PARAMS ((struct gdb_file *stream, struct gdb_file *dest));
 403 extern void set_gdb_file_put PARAMS ((struct gdb_file *stream, gdb_file_put_ftype *put));
 404
 405 typedef void (gdb_file_delete_ftype) PARAMS ((struct gdb_file *stream));
 406 extern void set_gdb_file_data PARAMS ((struct gdb_file *stream, void *data, gdb_file_delete_ftype *delete));
 407
 408 extern struct gdb_file *gdb_file_new PARAMS ((void));
 409
 410 extern void gdb_file_delete PARAMS ((struct gdb_file *stream));
 411
 412 extern void gdb_file_rewind PARAMS ((struct gdb_file *stream));
 413
 414 /* NOTE: copies left to right */
 415 extern void gdb_file_put PARAMS ((struct gdb_file *src, struct gdb_file *dest));
 416
 417 extern void *gdb_file_data PARAMS ((struct gdb_file *file));
 418
 419 /* Open the specified FILE as a gdb_file. */
 420 extern struct gdb_file *stdio_fileopen PARAMS ((FILE *));
 421 /* #if defined (TUI) */
 422 extern struct gdb_file *tui_fileopen PARAMS ((FILE *));
 423 /* #endif */
 424
 425 /* deprecated - use gdb_file_delete */
 426 extern void gdb_fclose PARAMS ((GDB_FILE **));
 427
 428 extern void gdb_flush PARAMS ((GDB_FILE *));
 429
 430 extern GDB_FILE *gdb_fopen PARAMS ((char * name, char * mode));
 431
 432 extern void fputs_filtered PARAMS ((const char *, GDB_FILE *));
 433
 434 extern void fputs_unfiltered PARAMS ((const char *, GDB_FILE *));
 435
 436 extern int fputc_filtered PARAMS ((int c, GDB_FILE *));
 437
 438 extern int fputc_unfiltered PARAMS ((int c, GDB_FILE *));
 439
 440 extern int putchar_unfiltered PARAMS ((int c));
 441
 442 extern void puts_filtered PARAMS ((const char *));
 443
 444 extern void puts_unfiltered PARAMS ((const char *));
 445
 446 extern void puts_debug PARAMS ((char *prefix, char *string, char *suffix));
 447
 448 extern void vprintf_filtered PARAMS ((const char *, va_list))
 449      ATTR_FORMAT(printf, 1, 0);
 450
 451 extern void vfprintf_filtered PARAMS ((GDB_FILE *, const char *, va_list))
 452      ATTR_FORMAT(printf, 2, 0);
 453
 454 extern void fprintf_filtered PARAMS ((GDB_FILE *, const char *, ...))
 455      ATTR_FORMAT(printf, 2, 3);
 456
 457 extern void fprintfi_filtered PARAMS ((int, GDB_FILE *, const char *, ...))
 458      ATTR_FORMAT(printf, 3, 4);
 459
 460 extern void printf_filtered PARAMS ((const char *, ...))
 461      ATTR_FORMAT(printf, 1, 2);
 462
 463 extern void printfi_filtered PARAMS ((int, const char *, ...))
 464      ATTR_FORMAT(printf, 2, 3);
 465
 466 extern void vprintf_unfiltered PARAMS ((const char *, va_list))
 467      ATTR_FORMAT(printf, 1, 0);
 468
 469 extern void vfprintf_unfiltered PARAMS ((GDB_FILE *, const char *, va_list))
 470      ATTR_FORMAT(printf, 2, 0);
 471
 472 extern void fprintf_unfiltered PARAMS ((GDB_FILE *, const char *, ...))
 473      ATTR_FORMAT(printf, 2, 3);
 474
 475 extern void printf_unfiltered PARAMS ((const char *, ...))
 476      ATTR_FORMAT(printf, 1, 2);
 477
 478 extern int gdb_file_isatty PARAMS ((GDB_FILE *));
 479
 480 /* #if defined (TUI) */
 481 extern GDB_FILE *gdb_file_init_astring PARAMS ((int));
 482 /* #endif */
 483
 484 extern void gdb_file_deallocate PARAMS ((GDB_FILE **));
 485
 486 /* #if defined (TUI) */
 487 extern char *gdb_file_get_strbuf PARAMS ((GDB_FILE *));
 488 /* #endif */
 489
 490 /* #if defined (TUI) */
 491 extern void gdb_file_adjust_strbuf PARAMS ((int, GDB_FILE *));
 492 /* #endif */
 493
 494 extern void print_spaces PARAMS ((int, GDB_FILE *));
 495
 496 extern void print_spaces_filtered PARAMS ((int, GDB_FILE *));
 497
 498 extern char *n_spaces PARAMS ((int));
 499
 500 extern void fputstr_filtered PARAMS ((const char *str, int quotr, GDB_FILE *stream));
 501
 502 extern void fputstr_unfiltered PARAMS ((const char *str, int quotr, GDB_FILE *stream));
 503
 504 extern void fputstrn_unfiltered PARAMS ((const char *str, int n, int quotr, GDB_FILE *stream));
 505
 506 /* Display the host ADDR on STREAM formatted as ``0x%x''. */
 507 extern void gdb_print_host_address (void *addr, struct gdb_file *stream);
 508
 509 /* Convert a CORE_ADDR into a HEX string.  paddr() is like %08lx.
 510    paddr_nz() is like %lx.  paddr_u() is like %lu. paddr_width() is
 511    for ``%*''. */
 512 extern int strlen_paddr (void);
 513 extern char* paddr (CORE_ADDR addr);
 514 extern char* paddr_nz (CORE_ADDR addr);
 515 extern char* paddr_u (CORE_ADDR addr);
 516 extern char* paddr_d (LONGEST addr);
 517
 518 typedef bfd_vma t_reg;
 519 extern char* preg (t_reg reg);
 520 extern char* preg_nz (t_reg reg);
 521
 522 extern void fprintf_symbol_filtered PARAMS ((GDB_FILE *, char *,
 523                                              enum language, int));
 524
 525 extern NORETURN void perror_with_name PARAMS ((char *)) ATTR_NORETURN;
 526
 527 extern void print_sys_errmsg PARAMS ((char *, int));
 528
 529 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 530    "const char *" in unistd.h, so we can't declare the argument
 531    as "char *".  */
 532
 533 extern char *re_comp PARAMS ((const char *));
 534
 535 /* From symfile.c */
 536
 537 extern void symbol_file_command PARAMS ((char *, int));
 538
 539 /* From top.c */
 540
 541 typedef void initialize_file_ftype (void);
 542
 543 extern char *skip_quoted PARAMS ((char *));
 544
 545 extern char *gdb_readline PARAMS ((char *));
 546
 547 extern char *command_line_input PARAMS ((char *, int, char *));
 548
 549 extern void print_prompt PARAMS ((void));
 550
 551 extern int input_from_terminal_p PARAMS ((void));
 552
 553 extern int info_verbose;
 554
 555 /* From printcmd.c */
 556
 557 extern void set_next_address PARAMS ((CORE_ADDR));
 558
 559 extern void print_address_symbolic PARAMS ((CORE_ADDR, GDB_FILE *, int,
 560                                             char *));
 561
 562 extern void print_address_numeric PARAMS ((CORE_ADDR, int, GDB_FILE *));
 563
 564 extern void print_address PARAMS ((CORE_ADDR, GDB_FILE *));
 565
 566 /* From source.c */
 567
 568 extern int openp PARAMS ((char *, int, char *, int, int, char **));
 569
 570 extern int source_full_path_of PARAMS ((char *, char **));
 571
 572 extern void mod_path PARAMS ((char *, char **));
 573
 574 extern void directory_command PARAMS ((char *, int));
 575
 576 extern void init_source_path PARAMS ((void));
 577
 578 extern char *symtab_to_filename PARAMS ((struct symtab *));
 579
 580 /* From exec.c */
 581
 582 extern void exec_set_section_offsets (bfd_signed_vma text_off,
 583                                       bfd_signed_vma data_off,
 584                                       bfd_signed_vma bss_off);
 585
 586 /* From findvar.c */
 587
 588 extern int read_relative_register_raw_bytes PARAMS ((int, char *));
 589
 590 /* Possible lvalue types.  Like enum language, this should be in
 591    value.h, but needs to be here for the same reason. */
 592
 593 enum lval_type
 594   {
 595     /* Not an lval. */
 596     not_lval,
 597     /* In memory.  Could be a saved register.  */
 598     lval_memory,
 599     /* In a register.  */
 600     lval_register,
 601     /* In a gdb internal variable.  */
 602     lval_internalvar,
 603     /* Part of a gdb internal variable (structure field).  */
 604     lval_internalvar_component,
 605     /* In a register series in a frame not the current one, which may have been
 606        partially saved or saved in different places (otherwise would be
 607        lval_register or lval_memory).  */
 608     lval_reg_frame_relative
 609   };
 610
 611 struct frame_info;
 612
 613 void default_get_saved_register PARAMS ((char *raw_buffer, int *optimized,
 614                                          CORE_ADDR *addrp,
 615                                          struct frame_info *frame, int regnum,
 616                                          enum lval_type *lval));
 617
 618 /* From readline (but not in any readline .h files).  */
 619
 620 extern char *tilde_expand PARAMS ((char *));
 621
 622 /* Control types for commands */
 623
 624 enum misc_command_type
 625 {
 626   ok_command,
 627   end_command,
 628   else_command,
 629   nop_command
 630 };
 631
 632 enum command_control_type
 633 {
 634   simple_control,
 635   break_control,
 636   continue_control,
 637   while_control,
 638   if_control,
 639   invalid_control
 640 };
 641
 642 /* Structure for saved commands lines
 643    (for breakpoints, defined commands, etc).  */
 644
 645 struct command_line
 646 {
 647   struct command_line *next;
 648   char *line;
 649   enum command_control_type control_type;
 650   int body_count;
 651   struct command_line **body_list;
 652 };
 653
 654 extern struct command_line *read_command_lines PARAMS ((char *, int));
 655
 656 extern void free_command_lines PARAMS ((struct command_line **));
 657
 658 /* To continue the execution commands when running gdb asynchronously.
 659    A continuation structure contains a pointer to a function to be called
 660    to finish the command, once the target has stopped. Such mechanism is
 661    used bt the finish and until commands, and in the remote protocol
 662    when opening an extended-remote connection. */
 663
 664 struct continuation_arg
 665 {
 666   struct continuation_arg *next;
 667   PTR data;
 668 };
 669
 670 struct continuation
 671 {
 672   void (*continuation_hook) PARAMS ((struct continuation_arg *));
 673   struct continuation_arg *arg_list;
 674   struct continuation *next;
 675 }
 676 continuation;
 677
 678 /* In infrun.c. */
 679 extern struct continuation *cmd_continuation;
 680
 681 /* From utils.c */
 682 extern void add_continuation PARAMS ((void (*) PARAMS ((struct continuation_arg *)),
 683                                struct continuation_arg *));
 684 extern void do_all_continuations PARAMS ((void));
 685 extern void discard_all_continuations PARAMS ((void));
 686
 687 /* String containing the current directory (what getwd would return).  */
 688
 689 extern char *current_directory;
 690
 691 /* Default radixes for input and output.  Only some values supported.  */
 692 extern unsigned input_radix;
 693 extern unsigned output_radix;
 694
 695 /* Possibilities for prettyprint parameters to routines which print
 696    things.  Like enum language, this should be in value.h, but needs
 697    to be here for the same reason.  FIXME:  If we can eliminate this
 698    as an arg to LA_VAL_PRINT, then we can probably move it back to
 699    value.h. */
 700
 701 enum val_prettyprint
 702 {
 703   Val_no_prettyprint = 0,
 704   Val_prettyprint,
 705   /* Use the default setting which the user has specified.  */
 706   Val_pretty_default
 707 };
 708
 709 \f
 710 /* Host machine definition.  This will be a symlink to one of the
 711    xm-*.h files, built by the `configure' script.  */
 712
 713 #include "xm.h"
 714
 715 /* Native machine support.  This will be a symlink to one of the
 716    nm-*.h files, built by the `configure' script.  */
 717
 718 #include "nm.h"
 719
 720 /* Target machine definition.  This will be a symlink to one of the
 721    tm-*.h files, built by the `configure' script.  */
 722
 723 #include "tm.h"
 724
 725 /* If the xm.h file did not define the mode string used to open the
 726    files, assume that binary files are opened the same way as text
 727    files */
 728 #ifndef FOPEN_RB
 729 #include "fopen-same.h"
 730 #endif
 731
 732 /* Microsoft C can't deal with const pointers */
 733
 734 #ifdef _MSC_VER
 735 #define CONST_PTR
 736 #else
 737 #define CONST_PTR const
 738 #endif
 739
 740 /*
 741  * Allow things in gdb to be declared "volatile".  If compiling ANSI, it
 742  * just works.  If compiling with gcc but non-ansi, redefine to __volatile__.
 743  * If non-ansi, non-gcc, then eliminate "volatile" entirely, making those
 744  * objects be read-write rather than read-only.
 745  */
 746
 747 #ifndef volatile
 748 #ifndef __STDC__
 749 # ifdef __GNUC__
 750 #  define volatile __volatile__
 751 # else
 752 #  define volatile /*nothing*/
 753 # endif /* GNUC */
 754 #endif /* STDC */
 755 #endif /* volatile */
 756
 757 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 758    FIXME: Assumes 2's complement arithmetic */
 759
 760 #if !defined (UINT_MAX)
 761 #define UINT_MAX ((unsigned int)(~0))           /* 0xFFFFFFFF for 32-bits */
 762 #endif
 763
 764 #if !defined (INT_MAX)
 765 #define INT_MAX ((int)(UINT_MAX >> 1))          /* 0x7FFFFFFF for 32-bits */
 766 #endif
 767
 768 #if !defined (INT_MIN)
 769 #define INT_MIN ((int)((int) ~0 ^ INT_MAX))     /* 0x80000000 for 32-bits */
 770 #endif
 771
 772 #if !defined (ULONG_MAX)
 773 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 774 #endif
 775
 776 #if !defined (LONG_MAX)
 777 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 778 #endif
 779
 780 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 781    arguments to a function, number in a value history, register number, etc.)
 782    where the value must not be larger than can fit in an int.  */
 783
 784 extern int longest_to_int PARAMS ((LONGEST));
 785
 786 /* Assorted functions we can declare, now that const and volatile are
 787    defined.  */
 788
 789 extern char *savestring PARAMS ((const char *, int));
 790
 791 extern char *msavestring PARAMS ((void *, const char *, int));
 792
 793 extern char *strsave PARAMS ((const char *));
 794
 795 extern char *mstrsave PARAMS ((void *, const char *));
 796
 797 #ifdef _MSC_VER /* FIXME; was long, but this causes compile errors in msvc if already defined */
 798 extern PTR xmmalloc PARAMS ((PTR, size_t));
 799
 800 extern PTR xmrealloc PARAMS ((PTR, PTR, size_t));
 801 #else
 802 extern PTR xmmalloc PARAMS ((PTR, long));
 803
 804 extern PTR xmrealloc PARAMS ((PTR, PTR, long));
 805 #endif
 806
 807 extern int parse_escape PARAMS ((char **));
 808
 809 /* Message to be printed before the error message, when an error occurs.  */
 810
 811 extern char *error_pre_print;
 812
 813 /* Message to be printed before the error message, when an error occurs.  */
 814
 815 extern char *quit_pre_print;
 816
 817 /* Message to be printed before the warning message, when a warning occurs.  */
 818
 819 extern char *warning_pre_print;
 820
 821 extern NORETURN void error PARAMS((const char *, ...)) ATTR_NORETURN;
 822
 823 extern void error_begin PARAMS ((void));
 824
 825 extern NORETURN void internal_error (char *, ...) ATTR_NORETURN;
 826
 827 extern NORETURN void nomem PARAMS ((long)) ATTR_NORETURN;
 828
 829 /* Reasons for calling return_to_top_level.  */
 830 enum return_reason {
 831   /* User interrupt.  */
 832   RETURN_QUIT,
 833
 834   /* Any other error.  */
 835   RETURN_ERROR
 836 };
 837
 838 #define ALL_CLEANUPS    ((struct cleanup *)0)
 839
 840 #define RETURN_MASK_QUIT (1 << (int)RETURN_QUIT)
 841 #define RETURN_MASK_ERROR (1 << (int)RETURN_ERROR)
 842 #define RETURN_MASK_ALL (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 843 typedef int return_mask;
 844
 845 extern NORETURN void
 846 return_to_top_level PARAMS ((enum return_reason)) ATTR_NORETURN;
 847
 848 typedef int (catch_errors_ftype) PARAMS ((PTR));
 849 extern int catch_errors PARAMS ((catch_errors_ftype *, PTR, char *, return_mask));
 850
 851 extern void warning_begin PARAMS ((void));
 852
 853 extern void warning PARAMS ((const char *, ...))
 854      ATTR_FORMAT(printf, 1, 2);
 855
 856 /* Global functions from other, non-gdb GNU thingies.
 857    Libiberty thingies are no longer declared here.  We include libiberty.h
 858    above, instead.  */
 859
 860 #ifndef GETENV_PROVIDED
 861 extern char *getenv PARAMS ((const char *));
 862 #endif
 863
 864 /* From other system libraries */
 865
 866 #ifdef HAVE_STDDEF_H
 867 #include <stddef.h>
 868 #endif
 869
 870 #ifdef HAVE_STDLIB_H
 871 #if defined(_MSC_VER) && !defined(__cplusplus)
 872 /* msvc defines these in stdlib.h for c code */
 873 #undef min
 874 #undef max
 875 #endif
 876 #include <stdlib.h>
 877 #endif
 878 #ifndef min
 879 #define min(a, b) ((a) < (b) ? (a) : (b))
 880 #endif
 881 #ifndef max
 882 #define max(a, b) ((a) > (b) ? (a) : (b))
 883 #endif
 884
 885
 886 /* We take the address of fclose later, but some stdio's forget
 887    to declare this.  We can't always declare it since there's
 888    no way to declare the parameters without upsetting some compiler
 889    somewhere. */
 890
 891 #ifndef FCLOSE_PROVIDED
 892 extern int fclose PARAMS ((FILE *));
 893 #endif
 894
 895 #ifndef atof
 896 extern double atof PARAMS ((const char *));     /* X3.159-1989  4.10.1.1 */
 897 #endif
 898
 899 #ifndef MALLOC_INCOMPATIBLE
 900
 901 #ifdef NEED_DECLARATION_MALLOC
 902 extern PTR malloc ();
 903 #endif
 904
 905 #ifdef NEED_DECLARATION_REALLOC
 906 extern PTR realloc ();
 907 #endif
 908
 909 #ifdef NEED_DECLARATION_FREE
 910 extern void free ();
 911 #endif
 912
 913 #endif /* MALLOC_INCOMPATIBLE */
 914
 915 /* Various possibilities for alloca.  */
 916 #ifndef alloca
 917 # ifdef __GNUC__
 918 #  define alloca __builtin_alloca
 919 # else /* Not GNU C */
 920 #  ifdef HAVE_ALLOCA_H
 921 #   include <alloca.h>
 922 #  else
 923 #   ifdef _AIX
 924  #pragma alloca
 925 #   else
 926
 927 /* We need to be careful not to declare this in a way which conflicts with
 928    bison.  Bison never declares it as char *, but under various circumstances
 929    (like __hpux) we need to use void *.  */
 930 #    if defined (__STDC__) || defined (__hpux)
 931    extern void *alloca ();
 932 #    else /* Don't use void *.  */
 933    extern char *alloca ();
 934 #    endif /* Don't use void *.  */
 935 #   endif /* Not _AIX */
 936 #  endif /* Not HAVE_ALLOCA_H */
 937 # endif /* Not GNU C */
 938 #endif /* alloca not defined */
 939
 940 /* HOST_BYTE_ORDER must be defined to one of these.  */
 941
 942 #ifdef HAVE_ENDIAN_H
 943 #include <endian.h>
 944 #endif
 945
 946 #if !defined (BIG_ENDIAN)
 947 #define BIG_ENDIAN 4321
 948 #endif
 949
 950 #if !defined (LITTLE_ENDIAN)
 951 #define LITTLE_ENDIAN 1234
 952 #endif
 953
 954 /* Dynamic target-system-dependent parameters for GDB. */
 955 #include "gdbarch.h"
 956
 957 /* Static target-system-dependent parameters for GDB. */
 958
 959 /* Number of bits in a char or unsigned char for the target machine.
 960    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 961 #if !defined (TARGET_CHAR_BIT)
 962 #define TARGET_CHAR_BIT 8
 963 #endif
 964
 965 /* Number of bits in a short or unsigned short for the target machine. */
 966 #if !defined (TARGET_SHORT_BIT)
 967 #define TARGET_SHORT_BIT (2 * TARGET_CHAR_BIT)
 968 #endif
 969
 970 /* Number of bits in an int or unsigned int for the target machine. */
 971 #if !defined (TARGET_INT_BIT)
 972 #define TARGET_INT_BIT (4 * TARGET_CHAR_BIT)
 973 #endif
 974
 975 /* Number of bits in a long or unsigned long for the target machine. */
 976 #if !defined (TARGET_LONG_BIT)
 977 #define TARGET_LONG_BIT (4 * TARGET_CHAR_BIT)
 978 #endif
 979
 980 /* Number of bits in a long long or unsigned long long for the target machine. */
 981 #if !defined (TARGET_LONG_LONG_BIT)
 982 #define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
 983 #endif
 984
 985 /* Number of bits in a float for the target machine. */
 986 #if !defined (TARGET_FLOAT_BIT)
 987 #define TARGET_FLOAT_BIT (4 * TARGET_CHAR_BIT)
 988 #endif
 989
 990 /* Number of bits in a double for the target machine. */
 991 #if !defined (TARGET_DOUBLE_BIT)
 992 #define TARGET_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 993 #endif
 994
 995 /* Number of bits in a long double for the target machine.  */
 996 #if !defined (TARGET_LONG_DOUBLE_BIT)
 997 #define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
 998 #endif
 999
1000 /* Number of bits in a pointer for the target machine */
1001 #if !defined (TARGET_PTR_BIT)
1002 #define TARGET_PTR_BIT TARGET_INT_BIT
1003 #endif
1004
1005 /* If we picked up a copy of CHAR_BIT from a configuration file
1006    (which may get it by including <limits.h>) then use it to set
1007    the number of bits in a host char.  If not, use the same size
1008    as the target. */
1009
1010 #if defined (CHAR_BIT)
1011 #define HOST_CHAR_BIT CHAR_BIT
1012 #else
1013 #define HOST_CHAR_BIT TARGET_CHAR_BIT
1014 #endif
1015
1016 /* The bit byte-order has to do just with numbering of bits in
1017    debugging symbols and such.  Conceptually, it's quite separate
1018    from byte/word byte order.  */
1019
1020 #if !defined (BITS_BIG_ENDIAN)
1021 #define BITS_BIG_ENDIAN (TARGET_BYTE_ORDER == BIG_ENDIAN)
1022 #endif
1023
1024 /* In findvar.c.  */
1025
1026 extern LONGEST extract_signed_integer PARAMS ((void *, int));
1027
1028 extern ULONGEST extract_unsigned_integer PARAMS ((void *, int));
1029
1030 extern int extract_long_unsigned_integer PARAMS ((void *, int, LONGEST *));
1031
1032 extern CORE_ADDR extract_address PARAMS ((void *, int));
1033
1034 extern void store_signed_integer PARAMS ((PTR, int, LONGEST));
1035
1036 extern void store_unsigned_integer PARAMS ((PTR, int, ULONGEST));
1037
1038 extern void store_address PARAMS ((PTR, int, LONGEST));
1039
1040 /* Setup definitions for host and target floating point formats.  We need to
1041    consider the format for `float', `double', and `long double' for both target
1042    and host.  We need to do this so that we know what kind of conversions need
1043    to be done when converting target numbers to and from the hosts DOUBLEST
1044    data type.  */
1045
1046 /* This is used to indicate that we don't know the format of the floating point
1047    number.  Typically, this is useful for native ports, where the actual format
1048    is irrelevant, since no conversions will be taking place.  */
1049
1050 extern const struct floatformat floatformat_unknown;
1051
1052 #if HOST_BYTE_ORDER == BIG_ENDIAN
1053 #  ifndef HOST_FLOAT_FORMAT
1054 #    define HOST_FLOAT_FORMAT &floatformat_ieee_single_big
1055 #  endif
1056 #  ifndef HOST_DOUBLE_FORMAT
1057 #    define HOST_DOUBLE_FORMAT &floatformat_ieee_double_big
1058 #  endif
1059 #else                           /* LITTLE_ENDIAN */
1060 #  ifndef HOST_FLOAT_FORMAT
1061 #    define HOST_FLOAT_FORMAT &floatformat_ieee_single_little
1062 #  endif
1063 #  ifndef HOST_DOUBLE_FORMAT
1064 #    define HOST_DOUBLE_FORMAT &floatformat_ieee_double_little
1065 #  endif
1066 #endif
1067
1068 #ifndef HOST_LONG_DOUBLE_FORMAT
1069 #define HOST_LONG_DOUBLE_FORMAT &floatformat_unknown
1070 #endif
1071
1072 #ifndef TARGET_FLOAT_FORMAT
1073 #define TARGET_FLOAT_FORMAT (TARGET_BYTE_ORDER == BIG_ENDIAN \
1074                              ? &floatformat_ieee_single_big \
1075                              : &floatformat_ieee_single_little)
1076 #endif
1077 #ifndef TARGET_DOUBLE_FORMAT
1078 #define TARGET_DOUBLE_FORMAT (TARGET_BYTE_ORDER == BIG_ENDIAN \
1079                               ? &floatformat_ieee_double_big \
1080                               : &floatformat_ieee_double_little)
1081 #endif
1082
1083 #ifndef TARGET_LONG_DOUBLE_FORMAT
1084 #  define TARGET_LONG_DOUBLE_FORMAT &floatformat_unknown
1085 #endif
1086
1087 /* Use `long double' if the host compiler supports it.  (Note that this is not
1088    necessarily any longer than `double'.  On SunOS/gcc, it's the same as
1089    double.)  This is necessary because GDB internally converts all floating
1090    point values to the widest type supported by the host.
1091
1092    There are problems however, when the target `long double' is longer than the
1093    host's `long double'.  In general, we'll probably reduce the precision of
1094    any such values and print a warning.  */
1095
1096 #ifdef HAVE_LONG_DOUBLE
1097 typedef long double DOUBLEST;
1098 #else
1099 typedef double DOUBLEST;
1100 #endif
1101
1102 extern void floatformat_to_doublest PARAMS ((const struct floatformat *,
1103                                              char *, DOUBLEST *));
1104 extern void floatformat_from_doublest PARAMS ((const struct floatformat *,
1105                                                DOUBLEST *, char *));
1106 extern DOUBLEST extract_floating PARAMS ((void *, int));
1107
1108 extern void store_floating PARAMS ((void *, int, DOUBLEST));
1109 \f
1110 /* On some machines there are bits in addresses which are not really
1111    part of the address, but are used by the kernel, the hardware, etc.
1112    for special purposes.  ADDR_BITS_REMOVE takes out any such bits
1113    so we get a "real" address such as one would find in a symbol
1114    table.  This is used only for addresses of instructions, and even then
1115    I'm not sure it's used in all contexts.  It exists to deal with there
1116    being a few stray bits in the PC which would mislead us, not as some sort
1117    of generic thing to handle alignment or segmentation (it's possible it
1118    should be in TARGET_READ_PC instead). */
1119 #if !defined (ADDR_BITS_REMOVE)
1120 #define ADDR_BITS_REMOVE(addr) (addr)
1121 #endif /* No ADDR_BITS_REMOVE.  */
1122
1123 /* From valops.c */
1124
1125 extern CORE_ADDR push_bytes PARAMS ((CORE_ADDR, char *, int));
1126
1127 extern CORE_ADDR push_word PARAMS ((CORE_ADDR, ULONGEST));
1128
1129 extern int watchdog;
1130
1131 /* Hooks for alternate command interfaces.  */
1132 struct target_waitstatus;
1133 struct cmd_list_element;
1134
1135 /* Should the asynchronous variant of the interpreter (using the
1136    event-loop) be enabled? */
1137 extern int event_loop_p;
1138
1139 extern void (*init_ui_hook) PARAMS ((char *argv0));
1140 extern void (*command_loop_hook) PARAMS ((void));
1141 extern void (*fputs_unfiltered_hook) PARAMS ((const char *linebuffer,
1142                                               GDB_FILE *stream));
1143 extern void (*print_frame_info_listing_hook) PARAMS ((struct symtab *s,
1144                                                       int line, int stopline,
1145                                                       int noerror));
1146 extern struct frame_info *parse_frame_specification PARAMS ((char *frame_exp));
1147 extern int  (*query_hook) PARAMS ((const char *, va_list));
1148 extern void (*warning_hook) PARAMS ((const char *, va_list));
1149 extern void (*flush_hook) PARAMS ((GDB_FILE *stream));
1150 extern void (*create_breakpoint_hook) PARAMS ((struct breakpoint *b));
1151 extern void (*delete_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
1152 extern void (*modify_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
1153 extern void (*interactive_hook) PARAMS ((void));
1154 extern void (*registers_changed_hook) PARAMS ((void));
1155 extern void (*readline_begin_hook) PARAMS ((char *, ...));
1156 extern char * (*readline_hook) PARAMS ((char *));
1157 extern void (*readline_end_hook) PARAMS ((void));
1158 extern void (*register_changed_hook) PARAMS ((int regno));
1159 extern void (*memory_changed_hook) PARAMS ((CORE_ADDR addr, int len));
1160 extern void (*context_hook) PARAMS ((int));
1161 extern int (*target_wait_hook) PARAMS ((int pid,
1162                                         struct target_waitstatus *status));
1163
1164 extern void (*attach_hook) PARAMS ((void));
1165 extern void (*detach_hook) PARAMS ((void));
1166 extern void (*call_command_hook) PARAMS ((struct cmd_list_element *c,
1167                                           char *cmd, int from_tty));
1168
1169 extern void (*set_hook) PARAMS ((struct cmd_list_element *c));
1170
1171 extern NORETURN void (*error_hook) PARAMS ((void)) ATTR_NORETURN;
1172
1173 extern void (*error_begin_hook) PARAMS ((void));
1174
1175
1176 /* Inhibit window interface if non-zero. */
1177
1178 extern int use_windows;
1179
1180 /* Symbolic definitions of filename-related things.  */
1181 /* FIXME, this doesn't work very well if host and executable
1182    filesystems conventions are different.  */
1183
1184 #ifndef DIRNAME_SEPARATOR
1185 #define DIRNAME_SEPARATOR ':'
1186 #endif
1187
1188 #ifndef SLASH_P
1189 #if defined(__GO32__)||defined(_WIN32)
1190 #define SLASH_P(X) ((X)=='\\')
1191 #else
1192 #define SLASH_P(X) ((X)=='/')
1193 #endif
1194 #endif
1195
1196 #ifndef SLASH_CHAR
1197 #if defined(__GO32__)||defined(_WIN32)
1198 #define SLASH_CHAR '\\'
1199 #else
1200 #define SLASH_CHAR '/'
1201 #endif
1202 #endif
1203
1204 #ifndef SLASH_STRING
1205 #if defined(__GO32__)||defined(_WIN32)
1206 #define SLASH_STRING "\\"
1207 #else
1208 #define SLASH_STRING "/"
1209 #endif
1210 #endif
1211
1212 #ifndef ROOTED_P
1213 #define ROOTED_P(X) (SLASH_P((X)[0]))
1214 #endif
1215
1216 /* On some systems, PIDGET is defined to extract the inferior pid from
1217    an internal pid that has the thread id and pid in seperate bit
1218    fields.  If not defined, then just use the entire internal pid as
1219    the actual pid. */
1220
1221 #ifndef PIDGET
1222 #define PIDGET(pid) (pid)
1223 #endif
1224
1225 /* If under Cygwin, provide backwards compatibility with older
1226    Cygwin compilers that don't define the current cpp define. */
1227 #ifdef __CYGWIN32__
1228 #ifndef __CYGWIN__
1229 #define __CYGWIN__
1230 #endif
1231 #endif
1232
1233 /* Define well known filenos if the system does not define them.  */
1234 #ifndef STDIN_FILENO
1235 #define STDIN_FILENO   0
1236 #endif
1237 #ifndef STDOUT_FILENO
1238 #define STDOUT_FILENO  1
1239 #endif
1240 #ifndef STDERR_FILENO
1241 #define STDERR_FILENO  2
1242 #endif
1243
1244 /* If this definition isn't overridden by the header files, assume
1245    that isatty and fileno exist on this system.  */
1246 #ifndef ISATTY
1247 #define ISATTY(FP)      (isatty (fileno (FP)))
1248 #endif
1249
1250 #endif /* #ifndef DEFS_H */