gdb/defs.h

   1 /* *INDENT-OFF* */ /* ATTRIBUTE_PRINTF confuses indent, avoid running it
   2                       for now.  */
   3 /* Basic, host-specific, and target-specific definitions for GDB.
   4    Copyright (C) 1986-2019 Free Software Foundation, Inc.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef DEFS_H
  22 #define DEFS_H
  23
  24 #ifdef GDBSERVER
  25 #  error gdbserver should not include gdb/defs.h
  26 #endif
  27
  28 #include "gdbsupport/common-defs.h"
  29
  30 #include <sys/types.h>
  31 #include <limits.h>
  32
  33 /* The libdecnumber library, on which GDB depends, includes a header file
  34    called gstdint.h instead of relying directly on stdint.h.  GDB, on the
  35    other hand, includes stdint.h directly, relying on the fact that gnulib
  36    generates a copy if the system doesn't provide one or if it is missing
  37    some features.  Unfortunately, gstdint.h and stdint.h cannot be included
  38    at the same time, which may happen when we include a file from
  39    libdecnumber.
  40
  41    The following macro definition effectively prevents the inclusion of
  42    gstdint.h, as all the definitions it provides are guarded against
  43    the GCC_GENERATED_STDINT_H macro.  We already have gnulib/stdint.h
  44    included, so it's ok to blank out gstdint.h.  */
  45 #define GCC_GENERATED_STDINT_H 1
  46
  47 #include <unistd.h>
  48
  49 #include <fcntl.h>
  50
  51 #include "gdb_wchar.h"
  52
  53 #include "ui-file.h"
  54
  55 #include "gdbsupport/host-defs.h"
  56 #include "gdbsupport/enum-flags.h"
  57
  58 /* Scope types enumerator.  List the types of scopes the compiler will
  59    accept.  */
  60
  61 enum compile_i_scope_types
  62   {
  63     COMPILE_I_INVALID_SCOPE,
  64
  65     /* A simple scope.  Wrap an expression into a simple scope that
  66        takes no arguments, returns no value, and uses the generic
  67        function name "_gdb_expr". */
  68
  69     COMPILE_I_SIMPLE_SCOPE,
  70
  71     /* Do not wrap the expression,
  72        it has to provide function "_gdb_expr" on its own.  */
  73     COMPILE_I_RAW_SCOPE,
  74
  75     /* A printable expression scope.  Wrap an expression into a scope
  76        suitable for the "compile print" command.  It uses the generic
  77        function name "_gdb_expr".  COMPILE_I_PRINT_ADDRESS_SCOPE variant
  78        is the usual one, taking address of the object.
  79        COMPILE_I_PRINT_VALUE_SCOPE is needed for arrays where the array
  80        name already specifies its address.  See get_out_value_type.  */
  81     COMPILE_I_PRINT_ADDRESS_SCOPE,
  82     COMPILE_I_PRINT_VALUE_SCOPE,
  83   };
  84
  85
  86 template<typename T>
  87 using RequireLongest = gdb::Requires<gdb::Or<std::is_same<T, LONGEST>,
  88                                              std::is_same<T, ULONGEST>>>;
  89
  90 /* Just in case they're not defined in stdio.h.  */
  91
  92 #ifndef SEEK_SET
  93 #define SEEK_SET 0
  94 #endif
  95 #ifndef SEEK_CUR
  96 #define SEEK_CUR 1
  97 #endif
  98
  99 /* The O_BINARY flag is defined in fcntl.h on some non-Posix platforms.
 100    It is used as an access modifier in calls to open(), where it acts
 101    similarly to the "b" character in fopen()'s MODE argument.  On Posix
 102    platforms it should be a no-op, so it is defined as 0 here.  This
 103    ensures that the symbol may be used freely elsewhere in gdb.  */
 104
 105 #ifndef O_BINARY
 106 #define O_BINARY 0
 107 #endif
 108
 109 #include "hashtab.h"
 110
 111 /* * Enable dbx commands if set.  */
 112 extern int dbx_commands;
 113
 114 /* * System root path, used to find libraries etc.  */
 115 extern char *gdb_sysroot;
 116
 117 /* * GDB datadir, used to store data files.  */
 118 extern std::string gdb_datadir;
 119
 120 /* * If not empty, the possibly relocated path to python's "lib" directory
 121    specified with --with-python.  */
 122 extern std::string python_libdir;
 123
 124 /* * Search path for separate debug files.  */
 125 extern char *debug_file_directory;
 126
 127 /* GDB's SIGINT handler basically sets a flag; code that might take a
 128    long time before it gets back to the event loop, and which ought to
 129    be interruptible, checks this flag using the QUIT macro, which, if
 130    GDB has the terminal, throws a quit exception.
 131
 132    In addition to setting a flag, the SIGINT handler also marks a
 133    select/poll-able file descriptor as read-ready.  That is used by
 134    interruptible_select in order to support interrupting blocking I/O
 135    in a race-free manner.
 136
 137    These functions use the extension_language_ops API to allow extension
 138    language(s) and GDB SIGINT handling to coexist seamlessly.  */
 139
 140 /* * Evaluate to non-zero if the quit flag is set, zero otherwise.  This
 141    will clear the quit flag as a side effect.  */
 142 extern int check_quit_flag (void);
 143 /* * Set the quit flag.  */
 144 extern void set_quit_flag (void);
 145
 146 /* The current quit handler (and its type).  This is called from the
 147    QUIT macro.  See default_quit_handler below for default behavior.
 148    Parts of GDB temporarily override this to e.g., completely suppress
 149    Ctrl-C because it would not be safe to throw.  E.g., normally, you
 150    wouldn't want to quit between a RSP command and its response, as
 151    that would break the communication with the target, but you may
 152    still want to intercept the Ctrl-C and offer to disconnect if the
 153    user presses Ctrl-C multiple times while the target is stuck
 154    waiting for the wedged remote stub.  */
 155 typedef void (quit_handler_ftype) (void);
 156 extern quit_handler_ftype *quit_handler;
 157
 158 /* The default quit handler.  Checks whether Ctrl-C was pressed, and
 159    if so:
 160
 161      - If GDB owns the terminal, throws a quit exception.
 162
 163      - If GDB does not own the terminal, forwards the Ctrl-C to the
 164        target.
 165 */
 166 extern void default_quit_handler (void);
 167
 168 /* Flag that function quit should call quit_force.  */
 169 extern volatile int sync_quit_force_run;
 170
 171 extern void quit (void);
 172
 173 /* Helper for the QUIT macro.  */
 174
 175 extern void maybe_quit (void);
 176
 177 /* Check whether a Ctrl-C was typed, and if so, call the current quit
 178    handler.  */
 179 #define QUIT maybe_quit ()
 180
 181 /* Set the serial event associated with the quit flag.  */
 182 extern void quit_serial_event_set (void);
 183
 184 /* Clear the serial event associated with the quit flag.  */
 185 extern void quit_serial_event_clear (void);
 186
 187 /* * Languages represented in the symbol table and elsewhere.
 188    This should probably be in language.h, but since enum's can't
 189    be forward declared to satisfy opaque references before their
 190    actual definition, needs to be here.
 191
 192    The constants here are in priority order.  In particular,
 193    demangling is attempted according to this order.
 194
 195    Note that there's ambiguity between the mangling schemes of some of
 196    these languages, so some symbols could be successfully demangled by
 197    several languages.  For that reason, the constants here are sorted
 198    in the order we'll attempt demangling them.  For example: Rust uses
 199    C++ mangling, so must come after C++; Ada must come last (see
 200    ada_sniff_from_mangled_name).  (Keep this order in sync with the
 201    'languages' array in language.c.)  */
 202
 203 enum language
 204   {
 205     language_unknown,           /* Language not known */
 206     language_auto,              /* Placeholder for automatic setting */
 207     language_c,                 /* C */
 208     language_objc,              /* Objective-C */
 209     language_cplus,             /* C++ */
 210     language_d,                 /* D */
 211     language_go,                /* Go */
 212     language_fortran,           /* Fortran */
 213     language_m2,                /* Modula-2 */
 214     language_asm,               /* Assembly language */
 215     language_pascal,            /* Pascal */
 216     language_opencl,            /* OpenCL */
 217     language_rust,              /* Rust */
 218     language_minimal,           /* All other languages, minimal support only */
 219     language_ada,               /* Ada */
 220     nr_languages
 221   };
 222
 223 /* The number of bits needed to represent all languages, with enough
 224    padding to allow for reasonable growth.  */
 225 #define LANGUAGE_BITS 5
 226 gdb_static_assert (nr_languages <= (1 << LANGUAGE_BITS));
 227
 228 enum precision_type
 229   {
 230     single_precision,
 231     double_precision,
 232     unspecified_precision
 233   };
 234
 235 /* * A generic, not quite boolean, enumeration.  This is used for
 236    set/show commands in which the options are on/off/automatic.  */
 237 enum auto_boolean
 238 {
 239   AUTO_BOOLEAN_TRUE,
 240   AUTO_BOOLEAN_FALSE,
 241   AUTO_BOOLEAN_AUTO
 242 };
 243
 244 /* * Potential ways that a function can return a value of a given
 245    type.  */
 246
 247 enum return_value_convention
 248 {
 249   /* * Where the return value has been squeezed into one or more
 250      registers.  */
 251   RETURN_VALUE_REGISTER_CONVENTION,
 252   /* * Commonly known as the "struct return convention".  The caller
 253      passes an additional hidden first parameter to the caller.  That
 254      parameter contains the address at which the value being returned
 255      should be stored.  While typically, and historically, used for
 256      large structs, this is convention is applied to values of many
 257      different types.  */
 258   RETURN_VALUE_STRUCT_CONVENTION,
 259   /* * Like the "struct return convention" above, but where the ABI
 260      guarantees that the called function stores the address at which
 261      the value being returned is stored in a well-defined location,
 262      such as a register or memory slot in the stack frame.  Don't use
 263      this if the ABI doesn't explicitly guarantees this.  */
 264   RETURN_VALUE_ABI_RETURNS_ADDRESS,
 265   /* * Like the "struct return convention" above, but where the ABI
 266      guarantees that the address at which the value being returned is
 267      stored will be available in a well-defined location, such as a
 268      register or memory slot in the stack frame.  Don't use this if
 269      the ABI doesn't explicitly guarantees this.  */
 270   RETURN_VALUE_ABI_PRESERVES_ADDRESS,
 271 };
 272
 273 /* Needed for various prototypes */
 274
 275 struct symtab;
 276 struct breakpoint;
 277 struct frame_info;
 278 struct gdbarch;
 279 struct value;
 280
 281 /* From main.c.  */
 282
 283 /* This really belong in utils.c (path-utils.c?), but it references some
 284    globals that are currently only available to main.c.  */
 285 extern std::string relocate_gdb_directory (const char *initial, bool relocatable);
 286
 287 \f
 288 /* Annotation stuff.  */
 289
 290 extern int annotation_level;    /* in stack.c */
 291 \f
 292
 293 /* From regex.c or libc.  BSD 4.4 declares this with the argument type as
 294    "const char *" in unistd.h, so we can't declare the argument
 295    as "char *".  */
 296
 297 EXTERN_C char *re_comp (const char *);
 298
 299 /* From symfile.c */
 300
 301 extern void symbol_file_command (const char *, int);
 302
 303 /* From top.c */
 304
 305 typedef void initialize_file_ftype (void);
 306
 307 extern char *gdb_readline_wrapper (const char *);
 308
 309 extern const char *command_line_input (const char *, const char *);
 310
 311 extern void print_prompt (void);
 312
 313 struct ui;
 314
 315 extern int input_interactive_p (struct ui *);
 316
 317 extern bool info_verbose;
 318
 319 /* From printcmd.c */
 320
 321 extern void set_next_address (struct gdbarch *, CORE_ADDR);
 322
 323 extern int print_address_symbolic (struct gdbarch *, CORE_ADDR,
 324                                    struct ui_file *, int,
 325                                    const char *);
 326
 327 extern void print_address (struct gdbarch *, CORE_ADDR, struct ui_file *);
 328 extern const char *pc_prefix (CORE_ADDR);
 329
 330 /* From exec.c */
 331
 332 /* * Process memory area starting at ADDR with length SIZE.  Area is
 333    readable iff READ is non-zero, writable if WRITE is non-zero,
 334    executable if EXEC is non-zero.  Area is possibly changed against
 335    its original file based copy if MODIFIED is non-zero.  DATA is
 336    passed without changes from a caller.  */
 337
 338 typedef int (*find_memory_region_ftype) (CORE_ADDR addr, unsigned long size,
 339                                          int read, int write, int exec,
 340                                          int modified, void *data);
 341
 342 /* * Possible lvalue types.  Like enum language, this should be in
 343    value.h, but needs to be here for the same reason.  */
 344
 345 enum lval_type
 346   {
 347     /* * Not an lval.  */
 348     not_lval,
 349     /* * In memory.  */
 350     lval_memory,
 351     /* * In a register.  Registers are relative to a frame.  */
 352     lval_register,
 353     /* * In a gdb internal variable.  */
 354     lval_internalvar,
 355     /* * Value encapsulates a callable defined in an extension language.  */
 356     lval_xcallable,
 357     /* * Part of a gdb internal variable (structure field).  */
 358     lval_internalvar_component,
 359     /* * Value's bits are fetched and stored using functions provided
 360        by its creator.  */
 361     lval_computed
 362   };
 363
 364 /* * Parameters of the "info proc" command.  */
 365
 366 enum info_proc_what
 367   {
 368     /* * Display the default cmdline, cwd and exe outputs.  */
 369     IP_MINIMAL,
 370
 371     /* * Display `info proc mappings'.  */
 372     IP_MAPPINGS,
 373
 374     /* * Display `info proc status'.  */
 375     IP_STATUS,
 376
 377     /* * Display `info proc stat'.  */
 378     IP_STAT,
 379
 380     /* * Display `info proc cmdline'.  */
 381     IP_CMDLINE,
 382
 383     /* * Display `info proc exe'.  */
 384     IP_EXE,
 385
 386     /* * Display `info proc cwd'.  */
 387     IP_CWD,
 388
 389     /* * Display `info proc files'.  */
 390     IP_FILES,
 391
 392     /* * Display all of the above.  */
 393     IP_ALL
 394   };
 395
 396 /* * Default radixes for input and output.  Only some values supported.  */
 397 extern unsigned input_radix;
 398 extern unsigned output_radix;
 399
 400 /* * Possibilities for prettyformat parameters to routines which print
 401    things.  Like enum language, this should be in value.h, but needs
 402    to be here for the same reason.  FIXME:  If we can eliminate this
 403    as an arg to LA_VAL_PRINT, then we can probably move it back to
 404    value.h.  */
 405
 406 enum val_prettyformat
 407   {
 408     Val_no_prettyformat = 0,
 409     Val_prettyformat,
 410     /* * Use the default setting which the user has specified.  */
 411     Val_prettyformat_default
 412   };
 413
 414 /* * Optional native machine support.  Non-native (and possibly pure
 415    multi-arch) targets do not need a "nm.h" file.  This will be a
 416    symlink to one of the nm-*.h files, built by the `configure'
 417    script.  */
 418
 419 #ifdef GDB_NM_FILE
 420 #include "nm.h"
 421 #endif
 422
 423 /* Assume that fopen accepts the letter "b" in the mode string.
 424    It is demanded by ISO C9X, and should be supported on all
 425    platforms that claim to have a standard-conforming C library.  On
 426    true POSIX systems it will be ignored and have no effect.  There
 427    may still be systems without a standard-conforming C library where
 428    an ISO C9X compiler (GCC) is available.  Known examples are SunOS
 429    4.x and 4.3BSD.  This assumption means these systems are no longer
 430    supported.  */
 431 #ifndef FOPEN_RB
 432 # include "fopen-bin.h"
 433 #endif
 434
 435 /* Defaults for system-wide constants (if not defined by xm.h, we fake it).
 436    FIXME: Assumes 2's complement arithmetic.  */
 437
 438 #if !defined (UINT_MAX)
 439 #define UINT_MAX ((unsigned int)(~0))       /* 0xFFFFFFFF for 32-bits */
 440 #endif
 441
 442 #if !defined (INT_MAX)
 443 #define INT_MAX ((int)(UINT_MAX >> 1))      /* 0x7FFFFFFF for 32-bits */
 444 #endif
 445
 446 #if !defined (INT_MIN)
 447 #define INT_MIN ((int)((int) ~0 ^ INT_MAX)) /* 0x80000000 for 32-bits */
 448 #endif
 449
 450 #if !defined (ULONG_MAX)
 451 #define ULONG_MAX ((unsigned long)(~0L))    /* 0xFFFFFFFF for 32-bits */
 452 #endif
 453
 454 #if !defined (LONG_MAX)
 455 #define LONG_MAX ((long)(ULONG_MAX >> 1))   /* 0x7FFFFFFF for 32-bits */
 456 #endif
 457
 458 #if !defined (ULONGEST_MAX)
 459 #define ULONGEST_MAX (~(ULONGEST)0)        /* 0xFFFFFFFFFFFFFFFF for 64-bits */
 460 #endif
 461
 462 #if !defined (LONGEST_MAX)                 /* 0x7FFFFFFFFFFFFFFF for 64-bits */
 463 #define LONGEST_MAX ((LONGEST)(ULONGEST_MAX >> 1))
 464 #endif
 465
 466 /* * Convert a LONGEST to an int.  This is used in contexts (e.g. number of
 467    arguments to a function, number in a value history, register number, etc.)
 468    where the value must not be larger than can fit in an int.  */
 469
 470 extern int longest_to_int (LONGEST);
 471
 472 /* * List of known OS ABIs.  If you change this, make sure to update the
 473    table in osabi.c.  */
 474 enum gdb_osabi
 475 {
 476   GDB_OSABI_UNKNOWN = 0,        /* keep this zero */
 477   GDB_OSABI_NONE,
 478
 479   GDB_OSABI_SVR4,
 480   GDB_OSABI_HURD,
 481   GDB_OSABI_SOLARIS,
 482   GDB_OSABI_LINUX,
 483   GDB_OSABI_FREEBSD,
 484   GDB_OSABI_NETBSD,
 485   GDB_OSABI_OPENBSD,
 486   GDB_OSABI_WINCE,
 487   GDB_OSABI_GO32,
 488   GDB_OSABI_QNXNTO,
 489   GDB_OSABI_CYGWIN,
 490   GDB_OSABI_AIX,
 491   GDB_OSABI_DICOS,
 492   GDB_OSABI_DARWIN,
 493   GDB_OSABI_SYMBIAN,
 494   GDB_OSABI_OPENVMS,
 495   GDB_OSABI_LYNXOS178,
 496   GDB_OSABI_NEWLIB,
 497   GDB_OSABI_SDE,
 498   GDB_OSABI_PIKEOS,
 499
 500   GDB_OSABI_INVALID             /* keep this last */
 501 };
 502
 503 /* Enumerate the requirements a symbol has in order to be evaluated.
 504    These are listed in order of "strength" -- a later entry subsumes
 505    earlier ones.  This fine-grained distinction is important because
 506    it allows for the evaluation of a TLS symbol during unwinding --
 507    when unwinding one has access to registers, but not the frame
 508    itself, because that is being constructed.  */
 509
 510 enum symbol_needs_kind
 511 {
 512   /* No special requirements -- just memory.  */
 513   SYMBOL_NEEDS_NONE,
 514
 515   /* The symbol needs registers.  */
 516   SYMBOL_NEEDS_REGISTERS,
 517
 518   /* The symbol needs a frame.  */
 519   SYMBOL_NEEDS_FRAME
 520 };
 521
 522 /* In findvar.c.  */
 523
 524 template<typename T, typename = RequireLongest<T>>
 525 T extract_integer (const gdb_byte *addr, int len, enum bfd_endian byte_order);
 526
 527 static inline LONGEST
 528 extract_signed_integer (const gdb_byte *addr, int len,
 529                         enum bfd_endian byte_order)
 530 {
 531   return extract_integer<LONGEST> (addr, len, byte_order);
 532 }
 533
 534 static inline ULONGEST
 535 extract_unsigned_integer (const gdb_byte *addr, int len,
 536                           enum bfd_endian byte_order)
 537 {
 538   return extract_integer<ULONGEST> (addr, len, byte_order);
 539 }
 540
 541 extern int extract_long_unsigned_integer (const gdb_byte *, int,
 542                                           enum bfd_endian, LONGEST *);
 543
 544 extern CORE_ADDR extract_typed_address (const gdb_byte *buf,
 545                                         struct type *type);
 546
 547 /* All 'store' functions accept a host-format integer and store a
 548    target-format integer at ADDR which is LEN bytes long.  */
 549
 550 template<typename T, typename = RequireLongest<T>>
 551 extern void store_integer (gdb_byte *addr, int len, enum bfd_endian byte_order,
 552                            T val);
 553
 554 static inline void
 555 store_signed_integer (gdb_byte *addr, int len,
 556                       enum bfd_endian byte_order, LONGEST val)
 557 {
 558   return store_integer (addr, len, byte_order, val);
 559 }
 560
 561 static inline void
 562 store_unsigned_integer (gdb_byte *addr, int len,
 563                         enum bfd_endian byte_order, ULONGEST val)
 564 {
 565   return store_integer (addr, len, byte_order, val);
 566 }
 567
 568 extern void store_typed_address (gdb_byte *buf, struct type *type,
 569                                  CORE_ADDR addr);
 570
 571 extern void copy_integer_to_size (gdb_byte *dest, int dest_size,
 572                                   const gdb_byte *source, int source_size,
 573                                   bool is_signed, enum bfd_endian byte_order);
 574
 575 /* Hooks for alternate command interfaces.  */
 576
 577 struct target_waitstatus;
 578 struct cmd_list_element;
 579
 580 extern void (*deprecated_pre_add_symbol_hook) (const char *);
 581 extern void (*deprecated_post_add_symbol_hook) (void);
 582 extern void (*selected_frame_level_changed_hook) (int);
 583 extern int (*deprecated_ui_loop_hook) (int signo);
 584 extern void (*deprecated_show_load_progress) (const char *section,
 585                                               unsigned long section_sent,
 586                                               unsigned long section_size,
 587                                               unsigned long total_sent,
 588                                               unsigned long total_size);
 589 extern void (*deprecated_print_frame_info_listing_hook) (struct symtab * s,
 590                                                          int line,
 591                                                          int stopline,
 592                                                          int noerror);
 593 extern int (*deprecated_query_hook) (const char *, va_list)
 594      ATTRIBUTE_FPTR_PRINTF(1,0);
 595 extern void (*deprecated_warning_hook) (const char *, va_list)
 596      ATTRIBUTE_FPTR_PRINTF(1,0);
 597 extern void (*deprecated_readline_begin_hook) (const char *, ...)
 598      ATTRIBUTE_FPTR_PRINTF_1;
 599 extern char *(*deprecated_readline_hook) (const char *);
 600 extern void (*deprecated_readline_end_hook) (void);
 601 extern void (*deprecated_context_hook) (int);
 602 extern ptid_t (*deprecated_target_wait_hook) (ptid_t ptid,
 603                                               struct target_waitstatus *status,
 604                                               int options);
 605
 606 extern void (*deprecated_attach_hook) (void);
 607 extern void (*deprecated_detach_hook) (void);
 608 extern void (*deprecated_call_command_hook) (struct cmd_list_element * c,
 609                                              const char *cmd, int from_tty);
 610
 611 extern int (*deprecated_ui_load_progress_hook) (const char *section,
 612                                                 unsigned long num);
 613
 614 /* If this definition isn't overridden by the header files, assume
 615    that isatty and fileno exist on this system.  */
 616 #ifndef ISATTY
 617 #define ISATTY(FP)      (isatty (fileno (FP)))
 618 #endif
 619
 620 /* * A width that can achieve a better legibility for GDB MI mode.  */
 621 #define GDB_MI_MSG_WIDTH  80
 622
 623 /* From progspace.c */
 624
 625 extern void initialize_progspace (void);
 626 extern void initialize_inferiors (void);
 627
 628 /* * Special block numbers */
 629
 630 enum block_enum
 631 {
 632   GLOBAL_BLOCK = 0,
 633   STATIC_BLOCK = 1,
 634   FIRST_LOCAL_BLOCK = 2
 635 };
 636
 637 /* User selection used in observable.h and multiple print functions.  */
 638
 639 enum user_selected_what_flag
 640   {
 641     /* Inferior selected.  */
 642     USER_SELECTED_INFERIOR = 1 << 1,
 643
 644     /* Thread selected.  */
 645     USER_SELECTED_THREAD = 1 << 2,
 646
 647     /* Frame selected.  */
 648     USER_SELECTED_FRAME = 1 << 3
 649   };
 650 DEF_ENUM_FLAGS_TYPE (enum user_selected_what_flag, user_selected_what);
 651
 652 #include "utils.h"
 653
 654 #endif /* #ifndef DEFS_H */