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