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 utils.c */
 318
 319 extern void initialize_utils (void);
 320
 321 extern void notice_quit (void);
 322
 323 extern int strcmp_iw (const char *, const char *);
 324
 325 extern int strcmp_iw_ordered (const char *, const char *);
 326
 327 extern int streq (const char *, const char *);
 328
 329 extern int subset_compare (char *, char *);
 330
 331 extern char *safe_strerror (int);
 332
 333 extern void request_quit (int);
 334
 335 #define ALL_CLEANUPS    ((struct cleanup *)0)
 336
 337 extern void do_cleanups (struct cleanup *);
 338 extern void do_final_cleanups (struct cleanup *);
 339 extern void do_run_cleanups (struct cleanup *);
 340 extern void do_exec_cleanups (struct cleanup *);
 341 extern void do_exec_error_cleanups (struct cleanup *);
 342
 343 extern void discard_cleanups (struct cleanup *);
 344 extern void discard_final_cleanups (struct cleanup *);
 345 extern void discard_exec_error_cleanups (struct cleanup *);
 346 extern void discard_my_cleanups (struct cleanup **, struct cleanup *);
 347
 348 /* NOTE: cagney/2000-03-04: This typedef is strictly for the
 349    make_cleanup function declarations below. Do not use this typedef
 350    as a cast when passing functions into the make_cleanup() code.
 351    Instead either use a bounce function or add a wrapper function.
 352    Calling a f(char*) function with f(void*) is non-portable. */
 353 typedef void (make_cleanup_ftype) (void *);
 354
 355 extern struct cleanup *make_cleanup (make_cleanup_ftype *, void *);
 356
 357 extern struct cleanup *make_cleanup_freeargv (char **);
 358
 359 struct ui_file;
 360 extern struct cleanup *make_cleanup_ui_file_delete (struct ui_file *);
 361
 362 struct section_addr_info;
 363 extern struct cleanup *(make_cleanup_free_section_addr_info
 364                         (struct section_addr_info *));
 365
 366 extern struct cleanup *make_cleanup_close (int fd);
 367
 368 extern struct cleanup *make_cleanup_bfd_close (bfd *abfd);
 369
 370 extern struct cleanup *make_final_cleanup (make_cleanup_ftype *, void *);
 371
 372 extern struct cleanup *make_my_cleanup (struct cleanup **,
 373                                         make_cleanup_ftype *, void *);
 374
 375 extern struct cleanup *make_run_cleanup (make_cleanup_ftype *, void *);
 376
 377 extern struct cleanup *make_exec_cleanup (make_cleanup_ftype *, void *);
 378 extern struct cleanup *make_exec_error_cleanup (make_cleanup_ftype *, void *);
 379
 380 extern struct cleanup *save_cleanups (void);
 381 extern struct cleanup *save_final_cleanups (void);
 382 extern struct cleanup *save_my_cleanups (struct cleanup **);
 383
 384 extern void restore_cleanups (struct cleanup *);
 385 extern void restore_final_cleanups (struct cleanup *);
 386 extern void restore_my_cleanups (struct cleanup **, struct cleanup *);
 387
 388 extern void free_current_contents (void *);
 389
 390 extern void null_cleanup (void *);
 391
 392 extern int myread (int, char *, int);
 393
 394 extern int query (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 395 extern int nquery (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 396 extern int yquery (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 397
 398 extern void init_page_info (void);
 399
 400 extern char *gdb_realpath (const char *);
 401 extern char *xfullpath (const char *);
 402
 403 extern unsigned long gnu_debuglink_crc32 (unsigned long crc,
 404                                           unsigned char *buf, size_t len);
 405
 406 /* From demangle.c */
 407
 408 extern void set_demangling_style (char *);
 409
 410 /* From tm.h */
 411
 412 struct type;
 413 typedef int (use_struct_convention_fn) (int gcc_p, struct type * value_type);
 414 extern use_struct_convention_fn generic_use_struct_convention;
 415
 416 \f
 417 /* Annotation stuff.  */
 418
 419 extern int annotation_level;    /* in stack.c */
 420 \f
 421 extern void begin_line (void);
 422
 423 extern void wrap_here (char *);
 424
 425 extern void reinitialize_more_filter (void);
 426
 427 /* Normal results */
 428 extern struct ui_file *gdb_stdout;
 429 /* Input stream */
 430 extern struct ui_file *gdb_stdin;
 431 /* Serious error notifications */
 432 extern struct ui_file *gdb_stderr;
 433 /* Log/debug/trace messages that should bypass normal stdout/stderr
 434    filtering.  For moment, always call this stream using
 435    *_unfiltered. In the very near future that restriction shall be
 436    removed - either call shall be unfiltered. (cagney 1999-06-13). */
 437 extern struct ui_file *gdb_stdlog;
 438 /* Target output that should bypass normal stdout/stderr filtering.
 439    For moment, always call this stream using *_unfiltered. In the
 440    very near future that restriction shall be removed - either call
 441    shall be unfiltered. (cagney 1999-07-02). */
 442 extern struct ui_file *gdb_stdtarg;
 443 extern struct ui_file *gdb_stdtargerr;
 444 extern struct ui_file *gdb_stdtargin;
 445
 446 #include "ui-file.h"
 447
 448 /* More generic printf like operations.  Filtered versions may return
 449    non-locally on error.  */
 450
 451 extern void fputs_filtered (const char *, struct ui_file *);
 452
 453 extern void fputs_unfiltered (const char *, struct ui_file *);
 454
 455 extern int fputc_filtered (int c, struct ui_file *);
 456
 457 extern int fputc_unfiltered (int c, struct ui_file *);
 458
 459 extern int putchar_filtered (int c);
 460
 461 extern int putchar_unfiltered (int c);
 462
 463 extern void puts_filtered (const char *);
 464
 465 extern void puts_unfiltered (const char *);
 466
 467 extern void puts_filtered_tabular (char *string, int width, int right);
 468
 469 extern void puts_debug (char *prefix, char *string, char *suffix);
 470
 471 extern void vprintf_filtered (const char *, va_list) ATTR_FORMAT (printf, 1, 0);
 472
 473 extern void vfprintf_filtered (struct ui_file *, const char *, va_list) ATTR_FORMAT (printf, 2, 0);
 474
 475 extern void fprintf_filtered (struct ui_file *, const char *, ...) ATTR_FORMAT (printf, 2, 3);
 476
 477 extern void fprintfi_filtered (int, struct ui_file *, const char *, ...) ATTR_FORMAT (printf, 3, 4);
 478
 479 extern void printf_filtered (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 480
 481 extern void printfi_filtered (int, const char *, ...) ATTR_FORMAT (printf, 2, 3);
 482
 483 extern void vprintf_unfiltered (const char *, va_list) ATTR_FORMAT (printf, 1, 0);
 484
 485 extern void vfprintf_unfiltered (struct ui_file *, const char *, va_list) ATTR_FORMAT (printf, 2, 0);
 486
 487 extern void fprintf_unfiltered (struct ui_file *, const char *, ...) ATTR_FORMAT (printf, 2, 3);
 488
 489 extern void printf_unfiltered (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 490
 491 extern void print_spaces (int, struct ui_file *);
 492
 493 extern void print_spaces_filtered (int, struct ui_file *);
 494
 495 extern char *n_spaces (int);
 496
 497 extern void fputstr_filtered (const char *str, int quotr, struct ui_file * stream);
 498
 499 extern void fputstr_unfiltered (const char *str, int quotr, struct ui_file * stream);
 500
 501 extern void fputstrn_unfiltered (const char *str, int n, int quotr, struct ui_file * stream);
 502
 503 /* Display the host ADDR on STREAM formatted as ``0x%x''. */
 504 extern void gdb_print_host_address (const void *addr, struct ui_file *stream);
 505
 506 /* Convert a CORE_ADDR into a HEX string.  paddr() is like %08lx.
 507    paddr_nz() is like %lx.  paddr_u() is like %lu. paddr_width() is
 508    for ``%*''. */
 509 extern int strlen_paddr (void);
 510 extern char *paddr (CORE_ADDR addr);
 511 extern char *paddr_nz (CORE_ADDR addr);
 512 extern char *paddr_u (CORE_ADDR addr);
 513 extern char *paddr_d (LONGEST addr);
 514
 515 /* Like 0x%lx, replaces deprecated_print_address_numeric.  */
 516 extern const char *paddress (CORE_ADDR addr);
 517
 518 extern char *phex (ULONGEST l, int sizeof_l);
 519 extern char *phex_nz (ULONGEST l, int sizeof_l);
 520 extern char *int_string (LONGEST, int, int, int, int);
 521
 522 /* Like paddr() only print/scan raw CORE_ADDR.  The output from
 523    core_addr_to_string() can be passed direct to
 524    string_to_core_addr().  */
 525 extern const char *core_addr_to_string (const CORE_ADDR addr);
 526 extern const char *core_addr_to_string_nz (const CORE_ADDR addr);
 527 extern CORE_ADDR string_to_core_addr (const char *my_string);
 528
 529 /* Return a string that contains a number formatted as a hex
 530    string.  */
 531 extern char *hex_string (LONGEST);
 532 extern char *hex_string_custom (LONGEST, int);
 533
 534 extern void fprintf_symbol_filtered (struct ui_file *, char *,
 535                                      enum language, int);
 536
 537 extern NORETURN void perror_with_name (const char *) ATTR_NORETURN;
 538
 539 extern void print_sys_errmsg (const char *, int);
 540
 541 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 542    "const char *" in unistd.h, so we can't declare the argument
 543    as "char *".  */
 544
 545 extern char *re_comp (const char *);
 546
 547 /* From symfile.c */
 548
 549 extern void symbol_file_command (char *, int);
 550
 551 /* Remote targets may wish to use this as their load function.  */
 552 extern void generic_load (char *name, int from_tty);
 553
 554 /* Summarise a download */
 555 extern void print_transfer_performance (struct ui_file *stream,
 556                                         unsigned long data_count,
 557                                         unsigned long write_count,
 558                                         unsigned long time_count);
 559
 560 /* From top.c */
 561
 562 typedef void initialize_file_ftype (void);
 563
 564 extern char *skip_quoted (char *);
 565
 566 extern char *gdb_readline (char *);
 567
 568 extern char *gdb_readline_wrapper (char *);
 569
 570 extern char *command_line_input (char *, int, char *);
 571
 572 extern void print_prompt (void);
 573
 574 extern int input_from_terminal_p (void);
 575
 576 extern int info_verbose;
 577
 578 /* From printcmd.c */
 579
 580 extern void set_next_address (CORE_ADDR);
 581
 582 extern void print_address_symbolic (CORE_ADDR, struct ui_file *, int,
 583                                     char *);
 584
 585 extern int build_address_symbolic (CORE_ADDR addr,
 586                                    int do_demangle,
 587                                    char **name,
 588                                    int *offset,
 589                                    char **filename,
 590                                    int *line,
 591                                    int *unmapped);
 592
 593 extern void deprecated_print_address_numeric (CORE_ADDR, int, struct ui_file *);
 594
 595 extern void print_address (CORE_ADDR, struct ui_file *);
 596
 597 /* From source.c */
 598
 599 #define OPF_TRY_CWD_FIRST     0x01
 600 #define OPF_SEARCH_IN_PATH    0x02
 601
 602 extern int openp (const char *, int, const char *, int, int, char **);
 603
 604 extern int source_full_path_of (char *, char **);
 605
 606 extern void mod_path (char *, char **);
 607
 608 extern void add_path (char *, char **, int);
 609
 610 extern void directory_command (char *, int);
 611
 612 extern char *source_path;
 613
 614 extern void init_source_path (void);
 615
 616 extern void init_last_source_visited (void);
 617
 618 /* From exec.c */
 619
 620 extern void exec_set_section_offsets (bfd_signed_vma text_off,
 621                                       bfd_signed_vma data_off,
 622                                       bfd_signed_vma bss_off);
 623
 624 /* Take over the 'find_mapped_memory' vector from exec.c. */
 625 extern void exec_set_find_memory_regions (int (*) (int (*) (CORE_ADDR,
 626                                                             unsigned long,
 627                                                             int, int, int,
 628                                                             void *),
 629                                                    void *));
 630
 631 /* Possible lvalue types.  Like enum language, this should be in
 632    value.h, but needs to be here for the same reason. */
 633
 634 enum lval_type
 635   {
 636     /* Not an lval. */
 637     not_lval,
 638     /* In memory.  */
 639     lval_memory,
 640     /* In a register.  Registers are relative to a frame.  */
 641     lval_register,
 642     /* In a gdb internal variable.  */
 643     lval_internalvar,
 644     /* Part of a gdb internal variable (structure field).  */
 645     lval_internalvar_component
 646   };
 647
 648 /* Control types for commands */
 649
 650 enum misc_command_type
 651   {
 652     ok_command,
 653     end_command,
 654     else_command,
 655     nop_command
 656   };
 657
 658 enum command_control_type
 659   {
 660     simple_control,
 661     break_control,
 662     continue_control,
 663     while_control,
 664     if_control,
 665     invalid_control
 666   };
 667
 668 /* Structure for saved commands lines
 669    (for breakpoints, defined commands, etc).  */
 670
 671 struct command_line
 672   {
 673     struct command_line *next;
 674     char *line;
 675     enum command_control_type control_type;
 676     int body_count;
 677     struct command_line **body_list;
 678   };
 679
 680 extern struct command_line *read_command_lines (char *, int);
 681
 682 extern void free_command_lines (struct command_line **);
 683
 684 /* To continue the execution commands when running gdb asynchronously.
 685    A continuation structure contains a pointer to a function to be called
 686    to finish the command, once the target has stopped. Such mechanism is
 687    used bt the finish and until commands, and in the remote protocol
 688    when opening an extended-remote connection. */
 689
 690 struct continuation_arg
 691   {
 692     struct continuation_arg *next;
 693     union continuation_data {
 694       void *pointer;
 695       int   integer;
 696       long  longint;
 697     } data;
 698   };
 699
 700 struct continuation
 701   {
 702     void (*continuation_hook) (struct continuation_arg *);
 703     struct continuation_arg *arg_list;
 704     struct continuation *next;
 705   };
 706
 707 /* In infrun.c. */
 708 extern struct continuation *cmd_continuation;
 709 /* Used only by the step_1 function. */
 710 extern struct continuation *intermediate_continuation;
 711
 712 /* From utils.c */
 713 extern void add_continuation (void (*)(struct continuation_arg *),
 714                               struct continuation_arg *);
 715 extern void do_all_continuations (void);
 716 extern void discard_all_continuations (void);
 717
 718 extern void add_intermediate_continuation (void (*)(struct continuation_arg *),
 719                               struct continuation_arg *);
 720 extern void do_all_intermediate_continuations (void);
 721 extern void discard_all_intermediate_continuations (void);
 722
 723 /* String containing the current directory (what getwd would return).  */
 724
 725 extern char *current_directory;
 726
 727 /* Default radixes for input and output.  Only some values supported.  */
 728 extern unsigned input_radix;
 729 extern unsigned output_radix;
 730
 731 /* Possibilities for prettyprint parameters to routines which print
 732    things.  Like enum language, this should be in value.h, but needs
 733    to be here for the same reason.  FIXME:  If we can eliminate this
 734    as an arg to LA_VAL_PRINT, then we can probably move it back to
 735    value.h. */
 736
 737 enum val_prettyprint
 738   {
 739     Val_no_prettyprint = 0,
 740     Val_prettyprint,
 741     /* Use the default setting which the user has specified.  */
 742     Val_pretty_default
 743   };
 744
 745 /* The ptid struct is a collection of the various "ids" necessary
 746    for identifying the inferior.  This consists of the process id
 747    (pid), thread id (tid), and other fields necessary for uniquely
 748    identifying the inferior process/thread being debugged.  When
 749    manipulating ptids, the constructors, accessors, and predicate
 750    declared in inferior.h should be used.  These are as follows:
 751
 752       ptid_build        - Make a new ptid from a pid, lwp, and tid.
 753       pid_to_ptid       - Make a new ptid from just a pid.
 754       ptid_get_pid      - Fetch the pid component of a ptid.
 755       ptid_get_lwp      - Fetch the lwp component of a ptid.
 756       ptid_get_tid      - Fetch the tid component of a ptid.
 757       ptid_equal        - Test to see if two ptids are equal.
 758
 759    Please do NOT access the struct ptid members directly (except, of
 760    course, in the implementation of the above ptid manipulation
 761    functions).  */
 762
 763 struct ptid
 764   {
 765     /* Process id */
 766     int pid;
 767
 768     /* Lightweight process id */
 769     long lwp;
 770
 771     /* Thread id */
 772     long tid;
 773   };
 774
 775 typedef struct ptid ptid_t;
 776
 777 \f
 778
 779 /* Optional host machine definition.  Pure autoconf targets will not
 780    need a "xm.h" file.  This will be a symlink to one of the xm-*.h
 781    files, built by the `configure' script.  */
 782
 783 #ifdef GDB_XM_FILE
 784 #include "xm.h"
 785 #endif
 786
 787 /* Optional native machine support.  Non-native (and possibly pure
 788    multi-arch) targets do not need a "nm.h" file.  This will be a
 789    symlink to one of the nm-*.h files, built by the `configure'
 790    script.  */
 791
 792 #ifdef GDB_NM_FILE
 793 #include "nm.h"
 794 #endif
 795
 796 /* Optional target machine definition.  Pure multi-arch configurations
 797    do not need a "tm.h" file.  This will be a symlink to one of the
 798    tm-*.h files, built by the `configure' script.  */
 799
 800 #ifdef GDB_TM_FILE
 801 #include "tm.h"
 802 #endif
 803
 804 /* Assume that fopen accepts the letter "b" in the mode string.
 805    It is demanded by ISO C9X, and should be supported on all
 806    platforms that claim to have a standard-conforming C library.  On
 807    true POSIX systems it will be ignored and have no effect.  There
 808    may still be systems without a standard-conforming C library where
 809    an ISO C9X compiler (GCC) is available.  Known examples are SunOS
 810    4.x and 4.3BSD.  This assumption means these systems are no longer
 811    supported.  */
 812 #ifndef FOPEN_RB
 813 # include "fopen-bin.h"
 814 #endif
 815
 816 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 817    FIXME: Assumes 2's complement arithmetic */
 818
 819 #if !defined (UINT_MAX)
 820 #define UINT_MAX ((unsigned int)(~0))   /* 0xFFFFFFFF for 32-bits */
 821 #endif
 822
 823 #if !defined (INT_MAX)
 824 #define INT_MAX ((int)(UINT_MAX >> 1))  /* 0x7FFFFFFF for 32-bits */
 825 #endif
 826
 827 #if !defined (INT_MIN)
 828 #define INT_MIN ((int)((int) ~0 ^ INT_MAX))     /* 0x80000000 for 32-bits */
 829 #endif
 830
 831 #if !defined (ULONG_MAX)
 832 #define ULONG_MAX ((unsigned long)(~0L))        /* 0xFFFFFFFF for 32-bits */
 833 #endif
 834
 835 #if !defined (LONG_MAX)
 836 #define LONG_MAX ((long)(ULONG_MAX >> 1))       /* 0x7FFFFFFF for 32-bits */
 837 #endif
 838
 839 #if !defined (ULONGEST_MAX)
 840 #define ULONGEST_MAX (~(ULONGEST)0)        /* 0xFFFFFFFFFFFFFFFF for 64-bits */
 841 #endif
 842
 843 #if !defined (LONGEST_MAX)                 /* 0x7FFFFFFFFFFFFFFF for 64-bits */
 844 #define LONGEST_MAX ((LONGEST)(ULONGEST_MAX >> 1))
 845 #endif
 846
 847 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 848    arguments to a function, number in a value history, register number, etc.)
 849    where the value must not be larger than can fit in an int.  */
 850
 851 extern int longest_to_int (LONGEST);
 852
 853 /* Assorted functions we can declare, now that const and volatile are
 854    defined.  */
 855
 856 extern char *savestring (const char *, size_t);
 857
 858 /* xmalloc(), xrealloc() and xcalloc() have already been declared in
 859    "libiberty.h". */
 860 extern void xfree (void *);
 861
 862 /* Like xmalloc, but zero the memory.  */
 863 extern void *xzalloc (size_t);
 864
 865 /* Utility macros to allocate typed memory.  Avoids errors like:
 866    struct foo *foo = xmalloc (sizeof struct bar); and memset (foo,
 867    sizeof (struct foo), 0).  */
 868 #define XZALLOC(TYPE) ((TYPE*) xzalloc (sizeof (TYPE)))
 869 #define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
 870 #define XCALLOC(NMEMB, TYPE) ((TYPE*) xcalloc ((NMEMB), sizeof (TYPE)))
 871
 872 /* Like asprintf/vasprintf but get an internal_error if the call
 873    fails. */
 874 extern void xasprintf (char **ret, const char *format, ...) ATTR_FORMAT (printf, 2, 3);
 875 extern void xvasprintf (char **ret, const char *format, va_list ap);
 876
 877 /* Like asprintf and vasprintf, but return the string, throw an error
 878    if no memory.  */
 879 extern char *xstrprintf (const char *format, ...) ATTR_FORMAT (printf, 1, 2);
 880 extern char *xstrvprintf (const char *format, va_list ap);
 881
 882 extern int parse_escape (char **);
 883
 884 /* Message to be printed before the error message, when an error occurs.  */
 885
 886 extern char *error_pre_print;
 887
 888 /* Message to be printed before the error message, when an error occurs.  */
 889
 890 extern char *quit_pre_print;
 891
 892 /* Message to be printed before the warning message, when a warning occurs.  */
 893
 894 extern char *warning_pre_print;
 895
 896 extern NORETURN void verror (const char *fmt, va_list ap) ATTR_NORETURN;
 897
 898 extern NORETURN void error (const char *fmt, ...) ATTR_NORETURN ATTR_FORMAT (printf, 1, 2);
 899
 900 extern NORETURN void error_stream (struct ui_file *) ATTR_NORETURN;
 901
 902 extern NORETURN void vfatal (const char *fmt, va_list ap) ATTR_NORETURN;
 903
 904 extern NORETURN void fatal (const char *fmt, ...) ATTR_NORETURN ATTR_FORMAT (printf, 1, 2);
 905
 906 extern NORETURN void internal_verror (const char *file, int line,
 907                                       const char *, va_list ap) ATTR_NORETURN;
 908
 909 extern NORETURN void internal_error (const char *file, int line,
 910                                      const char *, ...) ATTR_NORETURN ATTR_FORMAT (printf, 3, 4);
 911
 912 extern void internal_vwarning (const char *file, int line,
 913                                const char *, va_list ap);
 914
 915 extern void internal_warning (const char *file, int line,
 916                               const char *, ...) ATTR_FORMAT (printf, 3, 4);
 917
 918 extern NORETURN void nomem (long) ATTR_NORETURN;
 919
 920 extern void warning (const char *, ...) ATTR_FORMAT (printf, 1, 2);
 921
 922 extern void vwarning (const char *, va_list args);
 923
 924 /* List of known OS ABIs.  If you change this, make sure to update the
 925    table in osabi.c.  */
 926 enum gdb_osabi
 927 {
 928   GDB_OSABI_UNINITIALIZED = -1, /* For struct gdbarch_info.  */
 929
 930   GDB_OSABI_UNKNOWN = 0,        /* keep this zero */
 931
 932   GDB_OSABI_SVR4,
 933   GDB_OSABI_HURD,
 934   GDB_OSABI_SOLARIS,
 935   GDB_OSABI_OSF1,
 936   GDB_OSABI_LINUX,
 937   GDB_OSABI_FREEBSD_AOUT,
 938   GDB_OSABI_FREEBSD_ELF,
 939   GDB_OSABI_NETBSD_AOUT,
 940   GDB_OSABI_NETBSD_ELF,
 941   GDB_OSABI_OPENBSD_ELF,
 942   GDB_OSABI_WINCE,
 943   GDB_OSABI_GO32,
 944   GDB_OSABI_NETWARE,
 945   GDB_OSABI_IRIX,
 946   GDB_OSABI_LYNXOS,
 947   GDB_OSABI_INTERIX,
 948   GDB_OSABI_HPUX_ELF,
 949   GDB_OSABI_HPUX_SOM,
 950
 951   GDB_OSABI_ARM_EABI_V1,
 952   GDB_OSABI_ARM_EABI_V2,
 953   GDB_OSABI_ARM_APCS,
 954   GDB_OSABI_QNXNTO,
 955
 956   GDB_OSABI_CYGWIN,
 957
 958   GDB_OSABI_INVALID             /* keep this last */
 959 };
 960
 961 /* Global functions from other, non-gdb GNU thingies.
 962    Libiberty thingies are no longer declared here.  We include libiberty.h
 963    above, instead.  */
 964
 965 /* From other system libraries */
 966
 967 #ifdef HAVE_STDDEF_H
 968 #include <stddef.h>
 969 #endif
 970
 971 #ifdef HAVE_STDLIB_H
 972 #include <stdlib.h>
 973 #endif
 974 #ifndef min
 975 #define min(a, b) ((a) < (b) ? (a) : (b))
 976 #endif
 977 #ifndef max
 978 #define max(a, b) ((a) > (b) ? (a) : (b))
 979 #endif
 980
 981
 982 #ifndef atof
 983 extern double atof (const char *);      /* X3.159-1989  4.10.1.1 */
 984 #endif
 985
 986 /* Various possibilities for alloca.  */
 987 #ifndef alloca
 988 #ifdef __GNUC__
 989 #define alloca __builtin_alloca
 990 #else /* Not GNU C */
 991 #ifdef HAVE_ALLOCA_H
 992 #include <alloca.h>
 993 #else
 994 #ifdef _AIX
 995 #pragma alloca
 996 #else
 997
 998 /* We need to be careful not to declare this in a way which conflicts with
 999    bison.  Bison never declares it as char *, but under various circumstances
1000    (like __hpux) we need to use void *.  */
1001 extern void *alloca ();
1002 #endif /* Not _AIX */
1003 #endif /* Not HAVE_ALLOCA_H */
1004 #endif /* Not GNU C */
1005 #endif /* alloca not defined */
1006
1007 /* Dynamic target-system-dependent parameters for GDB. */
1008 #include "gdbarch.h"
1009
1010 /* Maximum size of a register.  Something small, but large enough for
1011    all known ISAs.  If it turns out to be too small, make it bigger.  */
1012
1013 enum { MAX_REGISTER_SIZE = 16 };
1014
1015 /* Static target-system-dependent parameters for GDB. */
1016
1017 /* Number of bits in a char or unsigned char for the target machine.
1018    Just like CHAR_BIT in <limits.h> but describes the target machine.  */
1019 #if !defined (TARGET_CHAR_BIT)
1020 #define TARGET_CHAR_BIT 8
1021 #endif
1022
1023 /* If we picked up a copy of CHAR_BIT from a configuration file
1024    (which may get it by including <limits.h>) then use it to set
1025    the number of bits in a host char.  If not, use the same size
1026    as the target. */
1027
1028 #if defined (CHAR_BIT)
1029 #define HOST_CHAR_BIT CHAR_BIT
1030 #else
1031 #define HOST_CHAR_BIT TARGET_CHAR_BIT
1032 #endif
1033
1034 /* The bit byte-order has to do just with numbering of bits in
1035    debugging symbols and such.  Conceptually, it's quite separate
1036    from byte/word byte order.  */
1037
1038 #if !defined (BITS_BIG_ENDIAN)
1039 #define BITS_BIG_ENDIAN (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
1040 #endif
1041
1042 /* In findvar.c.  */
1043
1044 extern LONGEST extract_signed_integer (const void *, int);
1045
1046 extern ULONGEST extract_unsigned_integer (const void *, int);
1047
1048 extern int extract_long_unsigned_integer (const void *, int, LONGEST *);
1049
1050 extern CORE_ADDR extract_typed_address (const void *buf, struct type *type);
1051
1052 extern void store_signed_integer (void *, int, LONGEST);
1053
1054 extern void store_unsigned_integer (void *, int, ULONGEST);
1055
1056 extern void store_typed_address (void *buf, struct type *type, CORE_ADDR addr);
1057
1058 \f
1059 /* From valops.c */
1060
1061 extern CORE_ADDR push_bytes (CORE_ADDR, char *, int);
1062
1063 extern CORE_ADDR push_word (CORE_ADDR, ULONGEST);
1064
1065 extern int watchdog;
1066
1067 /* Hooks for alternate command interfaces.  */
1068
1069 /* The name of the interpreter if specified on the command line. */
1070 extern char *interpreter_p;
1071
1072 /* If a given interpreter matches INTERPRETER_P then it should update
1073    deprecated_command_loop_hook and deprecated_init_ui_hook with the
1074    per-interpreter implementation.  */
1075 /* FIXME: deprecated_command_loop_hook and deprecated_init_ui_hook
1076    should be moved here. */
1077
1078 struct target_waitstatus;
1079 struct cmd_list_element;
1080
1081 extern void (*deprecated_pre_add_symbol_hook) (const char *);
1082 extern void (*deprecated_post_add_symbol_hook) (void);
1083 extern void (*selected_frame_level_changed_hook) (int);
1084 extern int (*deprecated_ui_loop_hook) (int signo);
1085 extern void (*deprecated_init_ui_hook) (char *argv0);
1086 extern void (*deprecated_command_loop_hook) (void);
1087 extern void (*deprecated_show_load_progress) (const char *section,
1088                                               unsigned long section_sent,
1089                                               unsigned long section_size,
1090                                               unsigned long total_sent,
1091                                               unsigned long total_size);
1092 extern void (*deprecated_print_frame_info_listing_hook) (struct symtab * s,
1093                                                          int line, int stopline,
1094                                                          int noerror);
1095 extern struct frame_info *parse_frame_specification (char *frame_exp);
1096 extern int (*deprecated_query_hook) (const char *, va_list);
1097 extern void (*deprecated_warning_hook) (const char *, va_list);
1098 extern void (*deprecated_flush_hook) (struct ui_file * stream);
1099 extern void (*deprecated_create_breakpoint_hook) (struct breakpoint * b);
1100 extern void (*deprecated_delete_breakpoint_hook) (struct breakpoint * bpt);
1101 extern void (*deprecated_modify_breakpoint_hook) (struct breakpoint * bpt);
1102 extern void (*deprecated_interactive_hook) (void);
1103 extern void (*deprecated_registers_changed_hook) (void);
1104 extern void (*deprecated_readline_begin_hook) (char *,...);
1105 extern char *(*deprecated_readline_hook) (char *);
1106 extern void (*deprecated_readline_end_hook) (void);
1107 extern void (*deprecated_register_changed_hook) (int regno);
1108 extern void (*deprecated_memory_changed_hook) (CORE_ADDR addr, int len);
1109 extern void (*deprecated_context_hook) (int);
1110 extern ptid_t (*deprecated_target_wait_hook) (ptid_t ptid,
1111                                          struct target_waitstatus * status);
1112
1113 extern void (*deprecated_attach_hook) (void);
1114 extern void (*deprecated_detach_hook) (void);
1115 extern void (*deprecated_call_command_hook) (struct cmd_list_element * c,
1116                                              char *cmd, int from_tty);
1117
1118 extern void (*deprecated_set_hook) (struct cmd_list_element * c);
1119
1120 extern void (*deprecated_error_hook) (void);
1121
1122 extern void (*deprecated_error_begin_hook) (void);
1123
1124 extern int (*deprecated_ui_load_progress_hook) (const char *section,
1125                                                 unsigned long num);
1126
1127
1128 /* Inhibit window interface if non-zero. */
1129
1130 extern int use_windows;
1131
1132 /* Symbolic definitions of filename-related things.  */
1133 /* FIXME, this doesn't work very well if host and executable
1134    filesystems conventions are different.  */
1135
1136 #ifdef __MSDOS__
1137 # define CANT_FORK
1138 # define GLOBAL_CURDIR
1139 # define DIRNAME_SEPARATOR ';'
1140 #endif
1141
1142 #ifndef DIRNAME_SEPARATOR
1143 #define DIRNAME_SEPARATOR ':'
1144 #endif
1145
1146 #ifndef SLASH_STRING
1147 #define SLASH_STRING "/"
1148 #endif
1149
1150 /* Provide default definitions of PIDGET, TIDGET, and MERGEPID.
1151    The name ``TIDGET'' is a historical accident.  Many uses of TIDGET
1152    in the code actually refer to a lightweight process id, i.e,
1153    something that can be considered a process id in its own right for
1154    certain purposes.  */
1155
1156 #ifndef PIDGET
1157 #define PIDGET(PTID) (ptid_get_pid (PTID))
1158 #define TIDGET(PTID) (ptid_get_lwp (PTID))
1159 #define MERGEPID(PID, TID) ptid_build (PID, TID, 0)
1160 #endif
1161
1162 /* Define well known filenos if the system does not define them.  */
1163 #ifndef STDIN_FILENO
1164 #define STDIN_FILENO   0
1165 #endif
1166 #ifndef STDOUT_FILENO
1167 #define STDOUT_FILENO  1
1168 #endif
1169 #ifndef STDERR_FILENO
1170 #define STDERR_FILENO  2
1171 #endif
1172
1173 /* If this definition isn't overridden by the header files, assume
1174    that isatty and fileno exist on this system.  */
1175 #ifndef ISATTY
1176 #define ISATTY(FP)      (isatty (fileno (FP)))
1177 #endif
1178
1179 /* Ensure that V is aligned to an N byte boundary (B's assumed to be a
1180    power of 2).  Round up/down when necessary.  Examples of correct
1181    use include:
1182
1183    addr = align_up (addr, 8); -- VALUE needs 8 byte alignment
1184    write_memory (addr, value, len);
1185    addr += len;
1186
1187    and:
1188
1189    sp = align_down (sp - len, 16); -- Keep SP 16 byte aligned
1190    write_memory (sp, value, len);
1191
1192    Note that uses such as:
1193
1194    write_memory (addr, value, len);
1195    addr += align_up (len, 8);
1196
1197    and:
1198
1199    sp -= align_up (len, 8);
1200    write_memory (sp, value, len);
1201
1202    are typically not correct as they don't ensure that the address (SP
1203    or ADDR) is correctly aligned (relying on previous alignment to
1204    keep things right).  This is also why the methods are called
1205    "align_..." instead of "round_..." as the latter reads better with
1206    this incorrect coding style.  */
1207
1208 extern ULONGEST align_up (ULONGEST v, int n);
1209 extern ULONGEST align_down (ULONGEST v, int n);
1210
1211 #endif /* #ifndef DEFS_H */