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 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
   4    1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
   5    Free Software Foundation, Inc.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 59 Temple Place - Suite 330,
  22    Boston, MA 02111-1307, USA.  */
  23
  24 #ifndef DEFS_H
  25 #define DEFS_H
  26
  27 #include "config.h"             /* Generated by configure.  */
  28
  29 #include <stdio.h>
  30 #include <errno.h>              /* System call error return status.  */
  31 #include <limits.h>
  32
  33 #ifdef HAVE_STDDEF_H
  34 #include <stddef.h>
  35 #else
  36 #include <sys/types.h>          /* For size_t.  */
  37 #endif
  38
  39 #ifdef HAVE_UNISTD_H
  40 #include <unistd.h>
  41 #endif
  42
  43 /* First include ansidecl.h so we can use the various macro definitions
  44    here and in all subsequent file inclusions.  */
  45
  46 #include "ansidecl.h"
  47
  48 #include "gdb_locale.h"
  49
  50 /* For ``enum target_signal''.  */
  51 #include "gdb/signals.h"
  52
  53 /* Just in case they're not defined in stdio.h.  */
  54
  55 #ifndef SEEK_SET
  56 #define SEEK_SET 0
  57 #endif
  58 #ifndef SEEK_CUR
  59 #define SEEK_CUR 1
  60 #endif
  61
  62 #include <stdarg.h>             /* For va_list.  */
  63
  64 #include "libiberty.h"
  65
  66 /* For BFD64 and bfd_vma.  */
  67 #include "bfd.h"
  68
  69 /* An address in the program being debugged.  Host byte order.  Rather
  70    than duplicate all the logic in BFD which figures out what type
  71    this is (long, long long, etc.) and whether it needs to be 64
  72    bits (the host/target interactions are subtle), we just use
  73    bfd_vma.  */
  74
  75 typedef bfd_vma CORE_ADDR;
  76
  77 /* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
  78
  79 #ifndef LONGEST
  80
  81 #ifdef BFD64
  82
  83 #define LONGEST BFD_HOST_64_BIT
  84 #define ULONGEST BFD_HOST_U_64_BIT
  85
  86 #else /* No BFD64 */
  87
  88 #ifdef CC_HAS_LONG_LONG
  89 #define LONGEST long long
  90 #define ULONGEST unsigned long long
  91 #else
  92 #ifdef BFD_HOST_64_BIT
  93 /* BFD_HOST_64_BIT is defined for some hosts that don't have long long
  94    (e.g. i386-windows) so try it.  */
  95 #define LONGEST BFD_HOST_64_BIT
  96 #define ULONGEST BFD_HOST_U_64_BIT
  97 #else
  98 #define LONGEST long
  99 #define ULONGEST unsigned long
 100 #endif
 101 #endif
 102
 103 #endif /* No BFD64 */
 104
 105 #endif /* ! LONGEST */
 106
 107 #ifndef min
 108 #define min(a, b) ((a) < (b) ? (a) : (b))
 109 #endif
 110 #ifndef max
 111 #define max(a, b) ((a) > (b) ? (a) : (b))
 112 #endif
 113
 114 /* Macros to do string compares.
 115
 116    NOTE: cagney/2000-03-14:
 117
 118    While old code can continue to refer to these macros, new code is
 119    probably better off using strcmp() directly vis: ``strcmp() == 0''
 120    and ``strcmp() != 0''.
 121
 122    This is because modern compilers can directly inline strcmp()
 123    making the original justification for these macros - avoid function
 124    call overhead by pre-testing the first characters
 125    (``*X==*Y?...:0'') - redundant.
 126
 127    ``Even if [...] testing the first character does have a modest
 128    performance improvement, I'd rather that whenever a performance
 129    issue is found that we spend the effort on algorithmic
 130    optimizations than micro-optimizing.'' J.T. */
 131
 132 /* NOTE: cagney/2003-11-23: All instances of STREQ[N] covered by
 133    testing GDB on a stabs system have been replaced by equivalent
 134    str[n]cmp calls.  To avoid the possability of introducing bugs when
 135    making untested changes, the remaining references were deprecated
 136    rather than replaced.  */
 137
 138 /* DISCLAIMER: cagney/2003-11-23: Simplified definition of these
 139    macros so that they just map directly onto strcmp equivalent.  I'm
 140    not responsible for any breakage due to code that relied on the old
 141    underlying implementation.  */
 142
 143 #define DEPRECATED_STREQ(a,b) (strcmp ((a), (b)) == 0)
 144 #define DEPRECATED_STREQN(a,b,c) (strncmp ((a), (b), (c)) == 0)
 145
 146 /* Check if a character is one of the commonly used C++ marker characters.  */
 147 extern int is_cplus_marker (int);
 148
 149 /* enable xdb commands if set */
 150 extern int xdb_commands;
 151
 152 /* enable dbx commands if set */
 153 extern int dbx_commands;
 154
 155 /* System root path, used to find libraries etc.  */
 156 extern char *gdb_sysroot;
 157
 158 extern int quit_flag;
 159 extern int immediate_quit;
 160 extern int sevenbit_strings;
 161
 162 extern void quit (void);
 163
 164 /* FIXME: cagney/2000-03-13: It has been suggested that the peformance
 165    benefits of having a ``QUIT'' macro rather than a function are
 166    marginal.  If the overhead of a QUIT function call is proving
 167    significant then its calling frequency should probably be reduced
 168    [kingdon].  A profile analyzing the current situtation is
 169    needed. */
 170
 171 #ifdef QUIT
 172 /* do twice to force compiler warning */
 173 #define QUIT_FIXME "FIXME"
 174 #define QUIT_FIXME "ignoring redefinition of QUIT"
 175 #else
 176 #define QUIT { \
 177   if (quit_flag) quit (); \
 178   if (deprecated_interactive_hook) deprecated_interactive_hook (); \
 179 }
 180 #endif
 181
 182 /* Languages represented in the symbol table and elsewhere.
 183    This should probably be in language.h, but since enum's can't
 184    be forward declared to satisfy opaque references before their
 185    actual definition, needs to be here. */
 186
 187 enum language
 188   {
 189     language_unknown,           /* Language not known */
 190     language_auto,              /* Placeholder for automatic setting */
 191     language_c,                 /* C */
 192     language_cplus,             /* C++ */
 193     language_objc,              /* Objective-C */
 194     language_java,              /* Java */
 195     language_fortran,           /* Fortran */
 196     language_m2,                /* Modula-2 */
 197     language_asm,               /* Assembly language */
 198     language_scm,               /* Scheme / Guile */
 199     language_pascal,            /* Pascal */
 200     language_ada,               /* Ada */
 201     language_minimal,           /* All other languages, minimal support only */
 202     nr_languages
 203   };
 204
 205 enum precision_type
 206   {
 207     single_precision,
 208     double_precision,
 209     unspecified_precision
 210   };
 211
 212 /* A generic, not quite boolean, enumeration.  */
 213 enum auto_boolean
 214 {
 215   AUTO_BOOLEAN_TRUE,
 216   AUTO_BOOLEAN_FALSE,
 217   AUTO_BOOLEAN_AUTO
 218 };
 219
 220 /* Potential ways that a function can return a value of a given type.  */
 221 enum return_value_convention
 222 {
 223   /* Where the return value has been squeezed into one or more
 224      registers.  */
 225   RETURN_VALUE_REGISTER_CONVENTION,
 226   /* Commonly known as the "struct return convention".  The caller
 227      passes an additional hidden first parameter to the caller.  That
 228      parameter contains the address at which the value being returned
 229      should be stored.  While typically, and historically, used for
 230      large structs, this is convention is applied to values of many
 231      different types.  */
 232   RETURN_VALUE_STRUCT_CONVENTION,
 233   /* Like the "struct return convention" above, but where the ABI
 234      guarantees that the called function stores the address at which
 235      the value being returned is stored in a well-defined location,
 236      such as a register or memory slot in the stack frame.  Don't use
 237      this if the ABI doesn't explicitly guarantees this.  */
 238   RETURN_VALUE_ABI_RETURNS_ADDRESS,
 239   /* Like the "struct return convention" above, but where the ABI
 240      guarantees that the address at which the value being returned is
 241      stored will be available in a well-defined location, such as a
 242      register or memory slot in the stack frame.  Don't use this if
 243      the ABI doesn't explicitly guarantees this.  */
 244   RETURN_VALUE_ABI_PRESERVES_ADDRESS,
 245 };
 246
 247 /* the cleanup list records things that have to be undone
 248    if an error happens (descriptors to be closed, memory to be freed, etc.)
 249    Each link in the chain records a function to call and an
 250    argument to give it.
 251
 252    Use make_cleanup to add an element to the cleanup chain.
 253    Use do_cleanups to do all cleanup actions back to a given
 254    point in the chain.  Use discard_cleanups to remove cleanups
 255    from the chain back to a given point, not doing them.  */
 256
 257 struct cleanup
 258   {
 259     struct cleanup *next;
 260     void (*function) (void *);
 261     void *arg;
 262   };
 263
 264
 265 /* The ability to declare that a function never returns is useful, but
 266    not really required to compile GDB successfully, so the NORETURN and
 267    ATTR_NORETURN macros normally expand into nothing.  */
 268
 269 /* If compiling with older versions of GCC, a function may be declared
 270    "volatile" to indicate that it does not return.  */
 271
 272 #ifndef NORETURN
 273 #if defined(__GNUC__) \
 274      && (__GNUC__ == 1 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7))
 275 #define NORETURN volatile
 276 #else
 277 #define NORETURN                /* nothing */
 278 #endif
 279 #endif
 280
 281 /* GCC 2.5 and later versions define a function attribute "noreturn",
 282    which is the preferred way to declare that a function never returns.
 283    However GCC 2.7 appears to be the first version in which this fully
 284    works everywhere we use it. */
 285
 286 #ifndef ATTR_NORETURN
 287 #if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7))
 288 #define ATTR_NORETURN __attribute__ ((noreturn))
 289 #else
 290 #define ATTR_NORETURN           /* nothing */
 291 #endif
 292 #endif
 293
 294 #ifndef ATTR_FORMAT
 295 #if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 4))
 296 #define ATTR_FORMAT(type, x, y) __attribute__ ((format(type, x, y)))
 297 #else
 298 #define ATTR_FORMAT(type, x, y) /* nothing */
 299 #endif
 300 #endif
 301
 302 /* Be conservative and use enum bitfields only with GCC.
 303    This is copied from gcc 3.3.1, system.h.  */
 304
 305 #if defined(__GNUC__) && (__GNUC__ >= 2)
 306 #define ENUM_BITFIELD(TYPE) enum TYPE
 307 #else
 308 #define ENUM_BITFIELD(TYPE) unsigned int
 309 #endif
 310
 311 /* Needed for various prototypes */
 312
 313 struct symtab;
 314 struct breakpoint;
 315 struct frame_info;
 316
 317 /* From blockframe.c */
 318
 319 extern int inside_entry_func (struct frame_info *this_frame);
 320
 321 /* From utils.c */
 322
 323 extern void initialize_utils (void);
 324
 325 extern void notice_quit (void);
 326
 327 extern int strcmp_iw (const char *, const char *);
 328
 329 extern int strcmp_iw_ordered (const char *, const char *);
 330
 331 extern int streq (const char *, const char *);
 332
 333 extern int subset_compare (char *, char *);
 334
 335 extern char *safe_strerror (int);
 336
 337 extern void request_quit (int);
 338
 339 extern void do_cleanups (struct cleanup *);
 340 extern void do_final_cleanups (struct cleanup *);
 341 extern void do_run_cleanups (struct cleanup *);
 342 extern void do_exec_cleanups (struct cleanup *);
 343 extern void do_exec_error_cleanups (struct cleanup *);
 344
 345 extern void discard_cleanups (struct cleanup *);
 346 extern void discard_final_cleanups (struct cleanup *);
 347 extern void discard_exec_error_cleanups (struct cleanup *);
 348 extern void discard_my_cleanups (struct cleanup **, struct cleanup *);
 349
 350 /* NOTE: cagney/2000-03-04: This typedef is strictly for the
 351    make_cleanup function declarations below. Do not use this typedef
 352    as a cast when passing functions into the make_cleanup() code.
 353    Instead either use a bounce function or add a wrapper function.
 354    Calling a f(char*) function with f(void*) is non-portable. */
 355 typedef void (make_cleanup_ftype) (void *);
 356
 357 extern struct cleanup *make_cleanup (make_cleanup_ftype *, void *);
 358
 359 extern struct cleanup *make_cleanup_freeargv (char **);
 360
 361 struct ui_file;
 362 extern struct cleanup *make_cleanup_ui_file_delete (struct ui_file *);
 363
 364 struct section_addr_info;
 365 extern struct cleanup *(make_cleanup_free_section_addr_info
 366                         (struct section_addr_info *));
 367
 368 extern struct cleanup *make_cleanup_close (int fd);
 369
 370 extern struct cleanup *make_cleanup_bfd_close (bfd *abfd);
 371
 372 extern struct cleanup *make_final_cleanup (make_cleanup_ftype *, void *);
 373
 374 extern struct cleanup *make_my_cleanup (struct cleanup **,
 375                                         make_cleanup_ftype *, void *);
 376
 377 extern struct cleanup *make_run_cleanup (make_cleanup_ftype *, void *);
 378
 379 extern struct cleanup *make_exec_cleanup (make_cleanup_ftype *, void *);
 380 extern struct cleanup *make_exec_error_cleanup (make_cleanup_ftype *, void *);
 381
 382 extern struct cleanup *save_cleanups (void);
 383 extern struct cleanup *save_final_cleanups (void);
 384 extern struct cleanup *save_my_cleanups (struct cleanup **);
 385
 386 extern void restore_cleanups (struct cleanup *);
 387 extern void restore_final_cleanups (struct cleanup *);
 388 extern void restore_my_cleanups (struct cleanup **, struct cleanup *);
 389
 390 extern void free_current_contents (void *);
 391
 392 extern void null_cleanup (void *);
 393
 394 extern int myread (int, char *, int);
 395
 396 extern int query (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 397 extern int nquery (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 398 extern int yquery (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 399
 400 extern void init_page_info (void);
 401
 402 extern char *gdb_realpath (const char *);
 403 extern char *xfullpath (const char *);
 404
 405 extern unsigned long gnu_debuglink_crc32 (unsigned long crc,
 406                                           unsigned char *buf, size_t len);
 407
 408 /* From demangle.c */
 409
 410 extern void set_demangling_style (char *);
 411
 412 /* From tm.h */
 413
 414 struct type;
 415 typedef int (use_struct_convention_fn) (int gcc_p, struct type * value_type);
 416 extern use_struct_convention_fn generic_use_struct_convention;
 417
 418 \f
 419 /* Annotation stuff.  */
 420
 421 extern int annotation_level;    /* in stack.c */
 422 \f
 423 extern void begin_line (void);
 424
 425 extern void wrap_here (char *);
 426
 427 extern void reinitialize_more_filter (void);
 428
 429 /* Normal results */
 430 extern struct ui_file *gdb_stdout;
 431 /* Input stream */
 432 extern struct ui_file *gdb_stdin;
 433 /* Serious error notifications */
 434 extern struct ui_file *gdb_stderr;
 435 /* Log/debug/trace messages that should bypass normal stdout/stderr
 436    filtering.  For moment, always call this stream using
 437    *_unfiltered. In the very near future that restriction shall be
 438    removed - either call shall be unfiltered. (cagney 1999-06-13). */
 439 extern struct ui_file *gdb_stdlog;
 440 /* Target output that should bypass normal stdout/stderr filtering.
 441    For moment, always call this stream using *_unfiltered. In the
 442    very near future that restriction shall be removed - either call
 443    shall be unfiltered. (cagney 1999-07-02). */
 444 extern struct ui_file *gdb_stdtarg;
 445 extern struct ui_file *gdb_stdtargerr;
 446 extern struct ui_file *gdb_stdtargin;
 447
 448 #include "ui-file.h"
 449
 450 /* More generic printf like operations.  Filtered versions may return
 451    non-locally on error.  */
 452
 453 extern void fputs_filtered (const char *, struct ui_file *);
 454
 455 extern void fputs_unfiltered (const char *, struct ui_file *);
 456
 457 extern int fputc_filtered (int c, struct ui_file *);
 458
 459 extern int fputc_unfiltered (int c, struct ui_file *);
 460
 461 extern int putchar_filtered (int c);
 462
 463 extern int putchar_unfiltered (int c);
 464
 465 extern void puts_filtered (const char *);
 466
 467 extern void puts_unfiltered (const char *);
 468
 469 extern void puts_filtered_tabular (char *string, int width, int right);
 470
 471 extern void puts_debug (char *prefix, char *string, char *suffix);
 472
 473 extern void vprintf_filtered (const char *, va_list) ATTR_FORMAT (printf, 1, 0);
 474
 475 extern void vfprintf_filtered (struct ui_file *, const char *, va_list) ATTR_FORMAT (printf, 2, 0);
 476
 477 extern void fprintf_filtered (struct ui_file *, const char *, ...) ATTR_FORMAT (printf, 2, 3);
 478
 479 extern void fprintfi_filtered (int, struct ui_file *, const char *, ...) ATTR_FORMAT (printf, 3, 4);
 480
 481 extern void printf_filtered (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 482
 483 extern void printfi_filtered (int, const char *, ...) ATTR_FORMAT (printf, 2, 3);
 484
 485 extern void vprintf_unfiltered (const char *, va_list) ATTR_FORMAT (printf, 1, 0);
 486
 487 extern void vfprintf_unfiltered (struct ui_file *, const char *, va_list) ATTR_FORMAT (printf, 2, 0);
 488
 489 extern void fprintf_unfiltered (struct ui_file *, const char *, ...) ATTR_FORMAT (printf, 2, 3);
 490
 491 extern void printf_unfiltered (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 492
 493 extern void print_spaces (int, struct ui_file *);
 494
 495 extern void print_spaces_filtered (int, struct ui_file *);
 496
 497 extern char *n_spaces (int);
 498
 499 extern void fputstr_filtered (const char *str, int quotr, struct ui_file * stream);
 500
 501 extern void fputstr_unfiltered (const char *str, int quotr, struct ui_file * stream);
 502
 503 extern void fputstrn_unfiltered (const char *str, int n, int quotr, struct ui_file * stream);
 504
 505 /* Display the host ADDR on STREAM formatted as ``0x%x''. */
 506 extern void gdb_print_host_address (const void *addr, struct ui_file *stream);
 507
 508 /* Convert a CORE_ADDR into a HEX string.  paddr() is like %08lx.
 509    paddr_nz() is like %lx.  paddr_u() is like %lu. paddr_width() is
 510    for ``%*''. */
 511 extern int strlen_paddr (void);
 512 extern char *paddr (CORE_ADDR addr);
 513 extern char *paddr_nz (CORE_ADDR addr);
 514 extern char *paddr_u (CORE_ADDR addr);
 515 extern char *paddr_d (LONGEST addr);
 516
 517 extern char *phex (ULONGEST l, int sizeof_l);
 518 extern char *phex_nz (ULONGEST l, int sizeof_l);
 519 extern char *int_string (LONGEST, int, int, int, int);
 520
 521 /* Like paddr() only print/scan raw CORE_ADDR.  The output from
 522    core_addr_to_string() can be passed direct to
 523    string_to_core_addr().  */
 524 extern const char *core_addr_to_string (const CORE_ADDR addr);
 525 extern const char *core_addr_to_string_nz (const CORE_ADDR addr);
 526 extern CORE_ADDR string_to_core_addr (const char *my_string);
 527
 528 /* Return a string that contains a number formatted as a hex
 529    string.  */
 530 extern char *hex_string (LONGEST);
 531 extern char *hex_string_custom (LONGEST, int);
 532
 533 extern void fprintf_symbol_filtered (struct ui_file *, char *,
 534                                      enum language, int);
 535
 536 extern NORETURN void perror_with_name (const char *) ATTR_NORETURN;
 537
 538 extern void print_sys_errmsg (const char *, int);
 539
 540 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 541    "const char *" in unistd.h, so we can't declare the argument
 542    as "char *".  */
 543
 544 extern char *re_comp (const char *);
 545
 546 /* From symfile.c */
 547
 548 extern void symbol_file_command (char *, int);
 549
 550 /* Remote targets may wish to use this as their load function.  */
 551 extern void generic_load (char *name, int from_tty);
 552
 553 /* Summarise a download */
 554 extern void print_transfer_performance (struct ui_file *stream,
 555                                         unsigned long data_count,
 556                                         unsigned long write_count,
 557                                         unsigned long time_count);
 558
 559 /* From top.c */
 560
 561 typedef void initialize_file_ftype (void);
 562
 563 extern char *skip_quoted (char *);
 564
 565 extern char *gdb_readline (char *);
 566
 567 extern char *gdb_readline_wrapper (char *);
 568
 569 extern char *command_line_input (char *, int, char *);
 570
 571 extern void print_prompt (void);
 572
 573 extern int input_from_terminal_p (void);
 574
 575 extern int info_verbose;
 576
 577 /* From printcmd.c */
 578
 579 extern void set_next_address (CORE_ADDR);
 580
 581 extern void print_address_symbolic (CORE_ADDR, struct ui_file *, int,
 582                                     char *);
 583
 584 extern int build_address_symbolic (CORE_ADDR addr,
 585                                    int do_demangle,
 586                                    char **name,
 587                                    int *offset,
 588                                    char **filename,
 589                                    int *line,
 590                                    int *unmapped);
 591
 592 extern void print_address_numeric (CORE_ADDR, int, struct ui_file *);
 593
 594 extern void print_address (CORE_ADDR, struct ui_file *);
 595
 596 /* From source.c */
 597
 598 #define OPF_TRY_CWD_FIRST     0x01
 599 #define OPF_SEARCH_IN_PATH    0x02
 600
 601 extern int openp (const char *, int, const char *, int, int, char **);
 602
 603 extern int source_full_path_of (char *, char **);
 604
 605 extern void mod_path (char *, char **);
 606
 607 extern void add_path (char *, char **, int);
 608
 609 extern void directory_command (char *, int);
 610
 611 extern char *source_path;
 612
 613 extern void init_source_path (void);
 614
 615 extern void init_last_source_visited (void);
 616
 617 /* From exec.c */
 618
 619 extern void exec_set_section_offsets (bfd_signed_vma text_off,
 620                                       bfd_signed_vma data_off,
 621                                       bfd_signed_vma bss_off);
 622
 623 /* Take over the 'find_mapped_memory' vector from exec.c. */
 624 extern void exec_set_find_memory_regions (int (*) (int (*) (CORE_ADDR,
 625                                                             unsigned long,
 626                                                             int, int, int,
 627                                                             void *),
 628                                                    void *));
 629
 630 /* Possible lvalue types.  Like enum language, this should be in
 631    value.h, but needs to be here for the same reason. */
 632
 633 enum lval_type
 634   {
 635     /* Not an lval. */
 636     not_lval,
 637     /* In memory.  Could be a saved register.  */
 638     lval_memory,
 639     /* In a register.  */
 640     lval_register,
 641     /* In a gdb internal variable.  */
 642     lval_internalvar,
 643     /* Part of a gdb internal variable (structure field).  */
 644     lval_internalvar_component,
 645     /* In a register series in a frame not the current one, which may have been
 646        partially saved or saved in different places (otherwise would be
 647        lval_register or lval_memory).  */
 648     lval_reg_frame_relative
 649   };
 650
 651 /* Control types for commands */
 652
 653 enum misc_command_type
 654   {
 655     ok_command,
 656     end_command,
 657     else_command,
 658     nop_command
 659   };
 660
 661 enum command_control_type
 662   {
 663     simple_control,
 664     break_control,
 665     continue_control,
 666     while_control,
 667     if_control,
 668     invalid_control
 669   };
 670
 671 /* Structure for saved commands lines
 672    (for breakpoints, defined commands, etc).  */
 673
 674 struct command_line
 675   {
 676     struct command_line *next;
 677     char *line;
 678     enum command_control_type control_type;
 679     int body_count;
 680     struct command_line **body_list;
 681   };
 682
 683 extern struct command_line *read_command_lines (char *, int);
 684
 685 extern void free_command_lines (struct command_line **);
 686
 687 /* To continue the execution commands when running gdb asynchronously.
 688    A continuation structure contains a pointer to a function to be called
 689    to finish the command, once the target has stopped. Such mechanism is
 690    used bt the finish and until commands, and in the remote protocol
 691    when opening an extended-remote connection. */
 692
 693 struct continuation_arg
 694   {
 695     struct continuation_arg *next;
 696     union continuation_data {
 697       void *pointer;
 698       int   integer;
 699       long  longint;
 700     } data;
 701   };
 702
 703 struct continuation
 704   {
 705     void (*continuation_hook) (struct continuation_arg *);
 706     struct continuation_arg *arg_list;
 707     struct continuation *next;
 708   };
 709
 710 /* In infrun.c. */
 711 extern struct continuation *cmd_continuation;
 712 /* Used only by the step_1 function. */
 713 extern struct continuation *intermediate_continuation;
 714
 715 /* From utils.c */
 716 extern void add_continuation (void (*)(struct continuation_arg *),
 717                               struct continuation_arg *);
 718 extern void do_all_continuations (void);
 719 extern void discard_all_continuations (void);
 720
 721 extern void add_intermediate_continuation (void (*)(struct continuation_arg *),
 722                               struct continuation_arg *);
 723 extern void do_all_intermediate_continuations (void);
 724 extern void discard_all_intermediate_continuations (void);
 725
 726 /* String containing the current directory (what getwd would return).  */
 727
 728 extern char *current_directory;
 729
 730 /* Default radixes for input and output.  Only some values supported.  */
 731 extern unsigned input_radix;
 732 extern unsigned output_radix;
 733
 734 /* Possibilities for prettyprint parameters to routines which print
 735    things.  Like enum language, this should be in value.h, but needs
 736    to be here for the same reason.  FIXME:  If we can eliminate this
 737    as an arg to LA_VAL_PRINT, then we can probably move it back to
 738    value.h. */
 739
 740 enum val_prettyprint
 741   {
 742     Val_no_prettyprint = 0,
 743     Val_prettyprint,
 744     /* Use the default setting which the user has specified.  */
 745     Val_pretty_default
 746   };
 747
 748 /* The ptid struct is a collection of the various "ids" necessary
 749    for identifying the inferior.  This consists of the process id
 750    (pid), thread id (tid), and other fields necessary for uniquely
 751    identifying the inferior process/thread being debugged.  When
 752    manipulating ptids, the constructors, accessors, and predicate
 753    declared in inferior.h should be used.  These are as follows:
 754
 755       ptid_build        - Make a new ptid from a pid, lwp, and tid.
 756       pid_to_ptid       - Make a new ptid from just a pid.
 757       ptid_get_pid      - Fetch the pid component of a ptid.
 758       ptid_get_lwp      - Fetch the lwp component of a ptid.
 759       ptid_get_tid      - Fetch the tid component of a ptid.
 760       ptid_equal        - Test to see if two ptids are equal.
 761
 762    Please do NOT access the struct ptid members directly (except, of
 763    course, in the implementation of the above ptid manipulation
 764    functions).  */
 765
 766 struct ptid
 767   {
 768     /* Process id */
 769     int pid;
 770
 771     /* Lightweight process id */
 772     long lwp;
 773
 774     /* Thread id */
 775     long tid;
 776   };
 777
 778 typedef struct ptid ptid_t;
 779
 780 \f
 781
 782 /* Optional host machine definition.  Pure autoconf targets will not
 783    need a "xm.h" file.  This will be a symlink to one of the xm-*.h
 784    files, built by the `configure' script.  */
 785
 786 #ifdef GDB_XM_FILE
 787 #include "xm.h"
 788 #endif
 789
 790 /* Optional native machine support.  Non-native (and possibly pure
 791    multi-arch) targets do not need a "nm.h" file.  This will be a
 792    symlink to one of the nm-*.h files, built by the `configure'
 793    script.  */
 794
 795 #ifdef GDB_NM_FILE
 796 #include "nm.h"
 797 #endif
 798
 799 /* Optional target machine definition.  Pure multi-arch configurations
 800    do not need a "tm.h" file.  This will be a symlink to one of the
 801    tm-*.h files, built by the `configure' script.  */
 802
 803 #ifdef GDB_TM_FILE
 804 #include "tm.h"
 805 #endif
 806
 807 /* If the xm.h file did not define the mode string used to open the
 808    files, assume that binary files are opened the same way as text
 809    files */
 810 #ifndef FOPEN_RB
 811 #include "fopen-same.h"
 812 #endif
 813
 814 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 815    FIXME: Assumes 2's complement arithmetic */
 816
 817 #if !defined (UINT_MAX)
 818 #define UINT_MAX ((unsigned int)(~0))   /* 0xFFFFFFFF for 32-bits */
 819 #endif
 820
 821 #if !defined (INT_MAX)
 822 #define INT_MAX ((int)(UINT_MAX >> 1))  /* 0x7FFFFFFF for 32-bits */
 823 #endif
 824
 825 #if !defined (INT_MIN)
 826 #define INT_MIN ((int)((int) ~0 ^ INT_MAX))     /* 0x80000000 for 32-bits */
 827 #endif
 828
 829 #if !defined (ULONG_MAX)
 830 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 831 #endif
 832
 833 #if !defined (LONG_MAX)
 834 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 835 #endif
 836
 837 #if !defined (ULONGEST_MAX)
 838 #define ULONGEST_MAX (~(ULONGEST)0)        /* 0xFFFFFFFFFFFFFFFF for 64-bits */
 839 #endif
 840
 841 #if !defined (LONGEST_MAX)                 /* 0x7FFFFFFFFFFFFFFF for 64-bits */
 842 #define LONGEST_MAX ((LONGEST)(ULONGEST_MAX >> 1))
 843 #endif
 844
 845 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 846    arguments to a function, number in a value history, register number, etc.)
 847    where the value must not be larger than can fit in an int.  */
 848
 849 extern int longest_to_int (LONGEST);
 850
 851 /* Assorted functions we can declare, now that const and volatile are
 852    defined.  */
 853
 854 extern char *savestring (const char *, size_t);
 855
 856 /* xmalloc(), xrealloc() and xcalloc() have already been declared in
 857    "libiberty.h". */
 858 extern void xfree (void *);
 859
 860 /* Utility macros to allocate typed memory.  Avoids errors like:
 861    struct foo *foo = xmalloc (sizeof struct bar); and memset (foo,
 862    sizeof (struct foo), 0).  */
 863 #define XZALLOC(TYPE) ((TYPE*) memset (xmalloc (sizeof (TYPE)), 0, sizeof (TYPE)))
 864 #define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
 865 #define XCALLOC(NMEMB, TYPE) ((TYPE*) xcalloc ((NMEMB), sizeof (TYPE)))
 866
 867 /* Like asprintf/vasprintf but get an internal_error if the call
 868    fails. */
 869 extern void xasprintf (char **ret, const char *format, ...) ATTR_FORMAT (printf, 2, 3);
 870 extern void xvasprintf (char **ret, const char *format, va_list ap);
 871
 872 /* Like asprintf and vasprintf, but return the string, throw an error
 873    if no memory.  */
 874 extern char *xstrprintf (const char *format, ...) ATTR_FORMAT (printf, 1, 2);
 875 extern char *xstrvprintf (const char *format, va_list ap);
 876
 877 extern int parse_escape (char **);
 878
 879 /* Message to be printed before the error message, when an error occurs.  */
 880
 881 extern char *error_pre_print;
 882
 883 /* Message to be printed before the error message, when an error occurs.  */
 884
 885 extern char *quit_pre_print;
 886
 887 /* Message to be printed before the warning message, when a warning occurs.  */
 888
 889 extern char *warning_pre_print;
 890
 891 extern NORETURN void verror (const char *fmt, va_list ap) ATTR_NORETURN;
 892
 893 extern NORETURN void error (const char *fmt, ...) ATTR_NORETURN ATTR_FORMAT (printf, 1, 2);
 894
 895 extern NORETURN void error_silent (const char *fmt, ...) ATTR_NORETURN ATTR_FORMAT (printf, 1, 2);
 896
 897 extern NORETURN void error_stream (struct ui_file *) ATTR_NORETURN;
 898
 899 /* Initialize the error buffer.  */
 900 extern void error_init (void);
 901
 902 /* Returns a freshly allocate buffer containing the last error
 903    message.  */
 904 extern char *error_last_message (void);
 905
 906 /* Output arbitrary error message.  */
 907 extern void error_output_message (char *pre_print, char *msg);
 908
 909 extern NORETURN void internal_verror (const char *file, int line,
 910                                       const char *, va_list ap) ATTR_NORETURN;
 911
 912 extern NORETURN void internal_error (const char *file, int line,
 913                                      const char *, ...) ATTR_NORETURN ATTR_FORMAT (printf, 3, 4);
 914
 915 extern void internal_vwarning (const char *file, int line,
 916                                const char *, va_list ap);
 917
 918 extern void internal_warning (const char *file, int line,
 919                               const char *, ...) ATTR_FORMAT (printf, 3, 4);
 920
 921 extern NORETURN void nomem (long) ATTR_NORETURN;
 922
 923 /* Reasons for calling throw_exception().  NOTE: all reason values
 924    must be less than zero.  enum value 0 is reserved for internal use
 925    as the return value from an initial setjmp().  The function
 926    catch_exceptions() reserves values >= 0 as legal results from its
 927    wrapped function.  */
 928
 929 enum return_reason
 930   {
 931     /* User interrupt.  */
 932     RETURN_QUIT = -2,
 933     /* Any other error.  */
 934     RETURN_ERROR
 935   };
 936
 937 #define ALL_CLEANUPS    ((struct cleanup *)0)
 938
 939 #define RETURN_MASK(reason)     (1 << (int)(-reason))
 940 #define RETURN_MASK_QUIT        RETURN_MASK (RETURN_QUIT)
 941 #define RETURN_MASK_ERROR       RETURN_MASK (RETURN_ERROR)
 942 #define RETURN_MASK_ALL         (RETURN_MASK_QUIT | RETURN_MASK_ERROR)
 943 typedef int return_mask;
 944
 945 /* Throw an exception of type RETURN_REASON.  Will execute a LONG JUMP
 946    to the inner most containing exception handler established using
 947    catch_exceptions() (or the legacy catch_errors()).
 948
 949    Code normally throws an exception using error() et.al.  For various
 950    reaons, GDB also contains code that throws an exception directly.
 951    For instance, the remote*.c targets contain CNTRL-C signal handlers
 952    that propogate the QUIT event up the exception chain.  ``This could
 953    be a good thing or a dangerous thing.'' -- the Existential Wombat.  */
 954
 955 extern NORETURN void throw_exception (enum return_reason) ATTR_NORETURN;
 956
 957 /* Call FUNC(UIOUT, FUNC_ARGS) but wrapped within an exception
 958    handler.  If an exception (enum return_reason) is thrown using
 959    throw_exception() than all cleanups installed since
 960    catch_exceptions() was entered are invoked, the (-ve) exception
 961    value is then returned by catch_exceptions.  If FUNC() returns
 962    normally (with a postive or zero return value) then that value is
 963    returned by catch_exceptions().  It is an internal_error() for
 964    FUNC() to return a negative value.
 965
 966    For the period of the FUNC() call: UIOUT is installed as the output
 967    builder; ERRSTRING is installed as the error/quit message; and a
 968    new cleanup_chain is established.  The old values are restored
 969    before catch_exceptions() returns.
 970
 971    The variant catch_exceptions_with_msg() is the same as
 972    catch_exceptions() but adds the ability to return an allocated
 973    copy of the gdb error message.  This is used when a silent error is
 974    issued and the caller wants to manually issue the error message.
 975
 976    FIXME; cagney/2001-08-13: The need to override the global UIOUT
 977    builder variable should just go away.
 978
 979    This function superseeds catch_errors().
 980
 981    This function uses SETJMP() and LONGJUMP().  */
 982
 983 struct ui_out;
 984 typedef int (catch_exceptions_ftype) (struct ui_out *ui_out, void *args);
 985 extern int catch_exceptions (struct ui_out *uiout,
 986                              catch_exceptions_ftype *func, void *func_args,
 987                              char *errstring, return_mask mask);
 988 extern int catch_exceptions_with_msg (struct ui_out *uiout,
 989                                       catch_exceptions_ftype *func,
 990                                       void *func_args,
 991                                       char *errstring, char **gdberrmsg,
 992                                       return_mask mask);
 993
 994 /* If CATCH_ERRORS_FTYPE throws an error, catch_errors() returns zero
 995    otherwize the result from CATCH_ERRORS_FTYPE is returned. It is
 996    probably useful for CATCH_ERRORS_FTYPE to always return a non-zero
 997    value. It's unfortunate that, catch_errors() does not return an
 998    indication of the exact exception that it caught - quit_flag might
 999    help.
1000
1001    This function is superseeded by catch_exceptions().  */
1002
1003 typedef int (catch_errors_ftype) (void *);
1004 extern int catch_errors (catch_errors_ftype *, void *, char *, return_mask);
1005
1006 /* Template to catch_errors() that wraps calls to command
1007    functions. */
1008
1009 typedef void (catch_command_errors_ftype) (char *, int);
1010 extern int catch_command_errors (catch_command_errors_ftype *func, char *command, int from_tty, return_mask);
1011
1012 extern void warning (const char *, ...) ATTR_FORMAT (printf, 1, 2);
1013
1014 extern void vwarning (const char *, va_list args);
1015
1016 /* List of known OS ABIs.  If you change this, make sure to update the
1017    table in osabi.c.  */
1018 enum gdb_osabi
1019 {
1020   GDB_OSABI_UNINITIALIZED = -1, /* For struct gdbarch_info.  */
1021
1022   GDB_OSABI_UNKNOWN = 0,        /* keep this zero */
1023
1024   GDB_OSABI_SVR4,
1025   GDB_OSABI_HURD,
1026   GDB_OSABI_SOLARIS,
1027   GDB_OSABI_OSF1,
1028   GDB_OSABI_LINUX,
1029   GDB_OSABI_FREEBSD_AOUT,
1030   GDB_OSABI_FREEBSD_ELF,
1031   GDB_OSABI_NETBSD_AOUT,
1032   GDB_OSABI_NETBSD_ELF,
1033   GDB_OSABI_OPENBSD_ELF,
1034   GDB_OSABI_WINCE,
1035   GDB_OSABI_GO32,
1036   GDB_OSABI_NETWARE,
1037   GDB_OSABI_IRIX,
1038   GDB_OSABI_LYNXOS,
1039   GDB_OSABI_INTERIX,
1040   GDB_OSABI_HPUX_ELF,
1041   GDB_OSABI_HPUX_SOM,
1042
1043   GDB_OSABI_ARM_EABI_V1,
1044   GDB_OSABI_ARM_EABI_V2,
1045   GDB_OSABI_ARM_APCS,
1046   GDB_OSABI_QNXNTO,
1047
1048   GDB_OSABI_CYGWIN,
1049
1050   GDB_OSABI_INVALID             /* keep this last */
1051 };
1052
1053 /* Global functions from other, non-gdb GNU thingies.
1054    Libiberty thingies are no longer declared here.  We include libiberty.h
1055    above, instead.  */
1056
1057 /* From other system libraries */
1058
1059 #ifdef HAVE_STDDEF_H
1060 #include <stddef.h>
1061 #endif
1062
1063 #ifdef HAVE_STDLIB_H
1064 #include <stdlib.h>
1065 #endif
1066 #ifndef min
1067 #define min(a, b) ((a) < (b) ? (a) : (b))
1068 #endif
1069 #ifndef max
1070 #define max(a, b) ((a) > (b) ? (a) : (b))
1071 #endif
1072
1073
1074 #ifndef atof
1075 extern double atof (const char *);      /* X3.159-1989  4.10.1.1 */
1076 #endif
1077
1078 /* Various possibilities for alloca.  */
1079 #ifndef alloca
1080 #ifdef __GNUC__
1081 #define alloca __builtin_alloca
1082 #else /* Not GNU C */
1083 #ifdef HAVE_ALLOCA_H
1084 #include <alloca.h>
1085 #else
1086 #ifdef _AIX
1087 #pragma alloca
1088 #else
1089
1090 /* We need to be careful not to declare this in a way which conflicts with
1091    bison.  Bison never declares it as char *, but under various circumstances
1092    (like __hpux) we need to use void *.  */
1093 extern void *alloca ();
1094 #endif /* Not _AIX */
1095 #endif /* Not HAVE_ALLOCA_H */
1096 #endif /* Not GNU C */
1097 #endif /* alloca not defined */
1098
1099 /* Dynamic target-system-dependent parameters for GDB. */
1100 #include "gdbarch.h"
1101
1102 /* Maximum size of a register.  Something small, but large enough for
1103    all known ISAs.  If it turns out to be too small, make it bigger.  */
1104
1105 enum { MAX_REGISTER_SIZE = 16 };
1106
1107 /* Static target-system-dependent parameters for GDB. */
1108
1109 /* Number of bits in a char or unsigned char for the target machine.
1110    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
1111 #if !defined (TARGET_CHAR_BIT)
1112 #define TARGET_CHAR_BIT 8
1113 #endif
1114
1115 /* If we picked up a copy of CHAR_BIT from a configuration file
1116    (which may get it by including <limits.h>) then use it to set
1117    the number of bits in a host char.  If not, use the same size
1118    as the target. */
1119
1120 #if defined (CHAR_BIT)
1121 #define HOST_CHAR_BIT CHAR_BIT
1122 #else
1123 #define HOST_CHAR_BIT TARGET_CHAR_BIT
1124 #endif
1125
1126 /* The bit byte-order has to do just with numbering of bits in
1127    debugging symbols and such.  Conceptually, it's quite separate
1128    from byte/word byte order.  */
1129
1130 #if !defined (BITS_BIG_ENDIAN)
1131 #define BITS_BIG_ENDIAN (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
1132 #endif
1133
1134 /* In findvar.c.  */
1135
1136 extern LONGEST extract_signed_integer (const void *, int);
1137
1138 extern ULONGEST extract_unsigned_integer (const void *, int);
1139
1140 extern int extract_long_unsigned_integer (const void *, int, LONGEST *);
1141
1142 extern CORE_ADDR extract_typed_address (const void *buf, struct type *type);
1143
1144 extern void store_signed_integer (void *, int, LONGEST);
1145
1146 extern void store_unsigned_integer (void *, int, ULONGEST);
1147
1148 extern void store_typed_address (void *buf, struct type *type, CORE_ADDR addr);
1149
1150 \f
1151 /* From valops.c */
1152
1153 extern CORE_ADDR push_bytes (CORE_ADDR, char *, int);
1154
1155 extern CORE_ADDR push_word (CORE_ADDR, ULONGEST);
1156
1157 extern int watchdog;
1158
1159 /* Hooks for alternate command interfaces.  */
1160
1161 /* The name of the interpreter if specified on the command line. */
1162 extern char *interpreter_p;
1163
1164 /* If a given interpreter matches INTERPRETER_P then it should update
1165    deprecated_command_loop_hook and deprecated_init_ui_hook with the
1166    per-interpreter implementation.  */
1167 /* FIXME: deprecated_command_loop_hook and deprecated_init_ui_hook
1168    should be moved here. */
1169
1170 struct target_waitstatus;
1171 struct cmd_list_element;
1172
1173 extern void (*deprecated_pre_add_symbol_hook) (const char *);
1174 extern void (*deprecated_post_add_symbol_hook) (void);
1175 extern void (*selected_frame_level_changed_hook) (int);
1176 extern int (*deprecated_ui_loop_hook) (int signo);
1177 extern void (*deprecated_init_ui_hook) (char *argv0);
1178 extern void (*deprecated_command_loop_hook) (void);
1179 extern void (*deprecated_show_load_progress) (const char *section,
1180                                               unsigned long section_sent,
1181                                               unsigned long section_size,
1182                                               unsigned long total_sent,
1183                                               unsigned long total_size);
1184 extern void (*deprecated_print_frame_info_listing_hook) (struct symtab * s,
1185                                                          int line, int stopline,
1186                                                          int noerror);
1187 extern struct frame_info *parse_frame_specification (char *frame_exp);
1188 extern int (*deprecated_query_hook) (const char *, va_list);
1189 extern void (*deprecated_warning_hook) (const char *, va_list);
1190 extern void (*deprecated_flush_hook) (struct ui_file * stream);
1191 extern void (*deprecated_create_breakpoint_hook) (struct breakpoint * b);
1192 extern void (*deprecated_delete_breakpoint_hook) (struct breakpoint * bpt);
1193 extern void (*deprecated_modify_breakpoint_hook) (struct breakpoint * bpt);
1194 extern void (*deprecated_interactive_hook) (void);
1195 extern void (*deprecated_registers_changed_hook) (void);
1196 extern void (*deprecated_readline_begin_hook) (char *,...);
1197 extern char *(*deprecated_readline_hook) (char *);
1198 extern void (*deprecated_readline_end_hook) (void);
1199 extern void (*deprecated_register_changed_hook) (int regno);
1200 extern void (*deprecated_memory_changed_hook) (CORE_ADDR addr, int len);
1201 extern void (*deprecated_context_hook) (int);
1202 extern ptid_t (*deprecated_target_wait_hook) (ptid_t ptid,
1203                                          struct target_waitstatus * status);
1204
1205 extern void (*deprecated_attach_hook) (void);
1206 extern void (*deprecated_detach_hook) (void);
1207 extern void (*deprecated_call_command_hook) (struct cmd_list_element * c,
1208                                              char *cmd, int from_tty);
1209
1210 extern void (*deprecated_set_hook) (struct cmd_list_element * c);
1211
1212 extern void (*deprecated_error_hook) (void);
1213
1214 extern void (*deprecated_error_begin_hook) (void);
1215
1216 extern int (*deprecated_ui_load_progress_hook) (const char *section,
1217                                                 unsigned long num);
1218
1219
1220 /* Inhibit window interface if non-zero. */
1221
1222 extern int use_windows;
1223
1224 /* Symbolic definitions of filename-related things.  */
1225 /* FIXME, this doesn't work very well if host and executable
1226    filesystems conventions are different.  */
1227
1228 #ifndef DIRNAME_SEPARATOR
1229 #define DIRNAME_SEPARATOR ':'
1230 #endif
1231
1232 #ifndef SLASH_STRING
1233 #define SLASH_STRING "/"
1234 #endif
1235
1236 #ifdef __MSDOS__
1237 # define CANT_FORK
1238 # define GLOBAL_CURDIR
1239 #endif
1240
1241 /* Provide default definitions of PIDGET, TIDGET, and MERGEPID.
1242    The name ``TIDGET'' is a historical accident.  Many uses of TIDGET
1243    in the code actually refer to a lightweight process id, i.e,
1244    something that can be considered a process id in its own right for
1245    certain purposes.  */
1246
1247 #ifndef PIDGET
1248 #define PIDGET(PTID) (ptid_get_pid (PTID))
1249 #define TIDGET(PTID) (ptid_get_lwp (PTID))
1250 #define MERGEPID(PID, TID) ptid_build (PID, TID, 0)
1251 #endif
1252
1253 /* Define well known filenos if the system does not define them.  */
1254 #ifndef STDIN_FILENO
1255 #define STDIN_FILENO   0
1256 #endif
1257 #ifndef STDOUT_FILENO
1258 #define STDOUT_FILENO  1
1259 #endif
1260 #ifndef STDERR_FILENO
1261 #define STDERR_FILENO  2
1262 #endif
1263
1264 /* If this definition isn't overridden by the header files, assume
1265    that isatty and fileno exist on this system.  */
1266 #ifndef ISATTY
1267 #define ISATTY(FP)      (isatty (fileno (FP)))
1268 #endif
1269
1270 /* Ensure that V is aligned to an N byte boundary (B's assumed to be a
1271    power of 2).  Round up/down when necessary.  Examples of correct
1272    use include:
1273
1274    addr = align_up (addr, 8); -- VALUE needs 8 byte alignment
1275    write_memory (addr, value, len);
1276    addr += len;
1277
1278    and:
1279
1280    sp = align_down (sp - len, 16); -- Keep SP 16 byte aligned
1281    write_memory (sp, value, len);
1282
1283    Note that uses such as:
1284
1285    write_memory (addr, value, len);
1286    addr += align_up (len, 8);
1287
1288    and:
1289
1290    sp -= align_up (len, 8);
1291    write_memory (sp, value, len);
1292
1293    are typically not correct as they don't ensure that the address (SP
1294    or ADDR) is correctly aligned (relying on previous alignment to
1295    keep things right).  This is also why the methods are called
1296    "align_..." instead of "round_..." as the latter reads better with
1297    this incorrect coding style.  */
1298
1299 extern ULONGEST align_up (ULONGEST v, int n);
1300 extern ULONGEST align_down (ULONGEST v, int n);
1301
1302 #endif /* #ifndef DEFS_H */