gdb/defs.h

   1 /* Basic definitions for GDB, the GNU debugger.
   2    Copyright (C) 1986, 1989, 1991 Free Software Foundation, Inc.
   3
   4 This file is part of GDB.
   5
   6 GDB is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 1, or (at your option)
   9 any later version.
  10
  11 GDB is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GDB; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 #if !defined (DEFS_H)
  21 #define DEFS_H
  22
  23 /* An address in the program being debugged.  Host byte order.  */
  24 typedef unsigned int CORE_ADDR;
  25
  26 #define min(a, b) ((a) < (b) ? (a) : (b))
  27 #define max(a, b) ((a) > (b) ? (a) : (b))
  28
  29 /* The character C++ uses to build identifiers that must be unique from
  30    the program's identifiers (such as $this and $$vptr).  */
  31 #define CPLUS_MARKER '$'        /* May be overridden to '.' for SysV */
  32
  33 /*
  34  * Allow things in gdb to be declared "const".  If compiling ANSI, it
  35  * just works.  If compiling with gcc but non-ansi, redefine to __const__.
  36  * If non-ansi, non-gcc, then eliminate "const" entirely, making those
  37  * objects be read-write rather than read-only.
  38  */
  39 #ifndef const
  40 #ifndef __STDC__
  41 # ifdef __GNUC__
  42 #  define const __const__
  43 # else
  44 #  define const /*nothing*/
  45 # endif /* GNUC */
  46 #endif /* STDC */
  47 #endif /* const */
  48
  49 #ifndef volatile
  50 #ifndef __STDC__
  51 # ifdef __GNUC__
  52 #  define volatile __volatile__
  53 # else
  54 #  define volatile /*nothing*/
  55 # endif /* GNUC */
  56 #endif /* STDC */
  57 #endif /* volatile */
  58
  59 extern char *savestring ();
  60 extern char *strsave ();
  61 extern char *concat ();
  62 #ifdef __STDC__
  63 extern void *xmalloc (), *xrealloc ();
  64 #else
  65 extern char *xmalloc (), *xrealloc ();
  66 #endif
  67 extern void free ();
  68 extern int parse_escape ();
  69 extern char *reg_names[];
  70 /* Indicate that these routines do not return to the caller.  */
  71 extern volatile void error(), fatal();
  72
  73 /* Various possibilities for alloca.  */
  74 #ifndef alloca
  75 # ifdef __GNUC__
  76 #  define alloca __builtin_alloca
  77 # else
  78 #  ifdef sparc
  79 #   include <alloca.h>
  80 #  endif
  81    extern char *alloca ();
  82 # endif
  83 #endif
  84
  85 extern int errno;                       /* System call error return status */
  86
  87 extern int quit_flag;
  88 extern int immediate_quit;
  89 extern void quit ();
  90
  91 #define QUIT { if (quit_flag) quit (); }
  92
  93 /* Notes on classes: class_alias is for alias commands which are not
  94    abbreviations of the original command.  */
  95
  96 enum command_class
  97 {
  98   /* Special args to help_list */
  99   all_classes = -2, all_commands = -1,
 100   /* Classes of commands */
 101   no_class = -1, class_run = 0, class_vars, class_stack,
 102   class_files, class_support, class_info, class_breakpoint,
 103   class_alias, class_obscure, class_user
 104 };
 105
 106 /* the cleanup list records things that have to be undone
 107    if an error happens (descriptors to be closed, memory to be freed, etc.)
 108    Each link in the chain records a function to call and an
 109    argument to give it.
 110
 111    Use make_cleanup to add an element to the cleanup chain.
 112    Use do_cleanups to do all cleanup actions back to a given
 113    point in the chain.  Use discard_cleanups to remove cleanups
 114    from the chain back to a given point, not doing them.  */
 115
 116 struct cleanup
 117 {
 118   struct cleanup *next;
 119   void (*function) ();
 120   int arg;
 121 };
 122
 123 /* From utils.c.  */
 124 extern void do_cleanups ();
 125 extern void discard_cleanups ();
 126 extern struct cleanup *make_cleanup ();
 127 extern struct cleanup *save_cleanups ();
 128 extern void restore_cleanups ();
 129 extern void free_current_contents ();
 130 extern int myread ();
 131 extern int query ();
 132 extern int lines_to_list ();
 133 extern void wrap_here (
 134 #ifdef __STDC__
 135                        char *
 136 #endif
 137                        );
 138 extern void reinitialize_more_filter ();
 139 extern void fputs_filtered ();
 140 extern void puts_filtered ();
 141 extern void fprintf_filtered ();
 142 extern void printf_filtered ();
 143 extern void print_spaces ();
 144 extern void print_spaces_filtered ();
 145 extern char *n_spaces ();
 146 extern void printchar ();
 147 extern void fprint_symbol ();
 148 extern void fputs_demangled ();
 149 extern void perror_with_name ();
 150 extern void print_sys_errmsg ();
 151
 152 /* From printcmd.c */
 153 extern void print_address_symbolic ();
 154 extern void print_address ();
 155
 156 /* From source.c */
 157 void mod_path (
 158 #ifdef __STDC__
 159                char *, char **
 160 #endif
 161                );
 162
 163 /* From readline (but not in any readline .h files).  */
 164 extern char *tilde_expand ();
 165
 166 /* Structure for saved commands lines
 167    (for breakpoints, defined commands, etc).  */
 168
 169 struct command_line
 170 {
 171   struct command_line *next;
 172   char *line;
 173 };
 174
 175 extern struct command_line *read_command_lines ();
 176 extern void free_command_lines ();
 177
 178 /* String containing the current directory (what getwd would return).  */
 179
 180 char *current_directory;
 181
 182 /* Default radixes for input and output.  Only some values supported.  */
 183 extern unsigned input_radix;
 184 extern unsigned output_radix;
 185
 186 /* Baud rate specified for communication with serial target systems.  */
 187 char *baud_rate;
 188
 189 #if !defined (UINT_MAX)
 190 #define UINT_MAX 0xffffffff
 191 #endif
 192
 193 #if !defined (LONG_MAX)
 194 #define LONG_MAX 0x7fffffff
 195 #endif
 196
 197 #if !defined (INT_MAX)
 198 #define INT_MAX 0x7fffffff
 199 #endif
 200
 201 #if !defined (INT_MIN)
 202 /* Two's complement, 32 bit.  */
 203 #define INT_MIN -0x80000000
 204 #endif
 205
 206 /* Just like CHAR_BIT in <limits.h> but describes the target machine.  */
 207 #if !defined (TARGET_CHAR_BIT)
 208 #define TARGET_CHAR_BIT 8
 209 #endif
 210
 211 /* Number of bits in a long long or unsigned long long
 212    for the target machine.  */
 213 #if !defined (TARGET_LONG_LONG_BIT)
 214 #define TARGET_LONG_LONG_BIT 64
 215 #endif
 216
 217 /* Convert a LONGEST to an int.  This is used in contexts (e.g. number
 218    of arguments to a function, number in a value history, register
 219    number, etc.) where the value must not be larger than can fit
 220    in an int.  */
 221 #if !defined (longest_to_int)
 222 #if defined (LONG_LONG)
 223 #define longest_to_int(x) (((x) > INT_MAX || (x) < INT_MIN) \
 224                            ? error ("Value out of range.") : (int) (x))
 225 #else /* No LONG_LONG.  */
 226 /* Assume sizeof (int) == sizeof (long).  */
 227 #define longest_to_int(x) ((int) (x))
 228 #endif /* No LONG_LONG.  */
 229 #endif /* No longest_to_int.  */
 230
 231 #endif /* no DEFS_H */