379 lines
11 KiB
C
379 lines
11 KiB
C
/* Basic, host-specific, and target-specific definitions for GDB.
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Copyright (C) 1986, 1989, 1991 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#if !defined (DEFS_H)
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#define DEFS_H
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/* An address in the program being debugged. Host byte order. */
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typedef unsigned int CORE_ADDR;
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#define min(a, b) ((a) < (b) ? (a) : (b))
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#define max(a, b) ((a) > (b) ? (a) : (b))
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/* The character C++ uses to build identifiers that must be unique from
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the program's identifiers (such as $this and $$vptr). */
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#define CPLUS_MARKER '$' /* May be overridden to '.' for SysV */
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extern int errno; /* System call error return status */
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extern int quit_flag;
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extern int immediate_quit;
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extern void quit ();
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#define QUIT { if (quit_flag) quit (); }
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/* Notes on classes: class_alias is for alias commands which are not
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abbreviations of the original command. */
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enum command_class
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{
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/* Special args to help_list */
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all_classes = -2, all_commands = -1,
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/* Classes of commands */
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no_class = -1, class_run = 0, class_vars, class_stack,
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class_files, class_support, class_info, class_breakpoint,
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class_alias, class_obscure, class_user
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};
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/* the cleanup list records things that have to be undone
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if an error happens (descriptors to be closed, memory to be freed, etc.)
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Each link in the chain records a function to call and an
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argument to give it.
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Use make_cleanup to add an element to the cleanup chain.
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Use do_cleanups to do all cleanup actions back to a given
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point in the chain. Use discard_cleanups to remove cleanups
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from the chain back to a given point, not doing them. */
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struct cleanup
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{
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struct cleanup *next;
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void (*function) ();
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int arg;
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};
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/* From utils.c. */
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extern void do_cleanups ();
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extern void discard_cleanups ();
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extern struct cleanup *make_cleanup ();
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extern struct cleanup *save_cleanups ();
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extern void restore_cleanups ();
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extern void free_current_contents ();
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extern int myread ();
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extern int query ();
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extern void wrap_here (
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#ifdef __STDC__
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char *
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#endif
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);
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extern void reinitialize_more_filter ();
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extern void fputs_filtered ();
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extern void puts_filtered ();
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extern void fprintf_filtered ();
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extern void printf_filtered ();
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extern void print_spaces ();
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extern void print_spaces_filtered ();
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extern char *n_spaces ();
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extern void printchar ();
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extern void fprint_symbol ();
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extern void fputs_demangled ();
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extern void perror_with_name ();
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extern void print_sys_errmsg ();
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/* From printcmd.c */
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extern void print_address_symbolic ();
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extern void print_address ();
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/* From source.c */
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void mod_path (
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#ifdef __STDC__
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char *, char **
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#endif
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);
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/* From readline (but not in any readline .h files). */
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extern char *tilde_expand ();
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/* Structure for saved commands lines
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(for breakpoints, defined commands, etc). */
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struct command_line
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{
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struct command_line *next;
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char *line;
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};
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extern struct command_line *read_command_lines ();
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extern void free_command_lines ();
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/* String containing the current directory (what getwd would return). */
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char *current_directory;
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/* Default radixes for input and output. Only some values supported. */
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extern unsigned input_radix;
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extern unsigned output_radix;
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/* Baud rate specified for communication with serial target systems. */
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char *baud_rate;
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/* Languages represented in the symbol table and elsewhere. */
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enum language
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{
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language_unknown, /* Language not known */
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language_auto, /* Placeholder for automatic setting */
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language_c, /* C */
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language_cplus, /* C++ */
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language_m2 /* Modula-2 */
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};
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/* Return a format string for printf that will print a number in the local
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(language-specific) hexadecimal format. Result is static and is
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overwritten by the next call. local_hex_format_custom takes printf
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options like "08" or "l" (to produce e.g. %08x or %lx). */
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#define local_hex_format() (current_language->la_hex_format)
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char *local_hex_format_custom(); /* language.c */
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/* Return a string that contains a number formatted in the local
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(language-specific) hexadecimal format. Result is static and is
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overwritten by the next call. local_hex_string_custom takes printf
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options like "08" or "l". */
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char *local_hex_string (); /* language.c */
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char *local_hex_string_custom (); /* language.c */
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/* Host machine definition. This will be a symlink to one of the
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xm-*.h files, built by the `configure' script. */
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#include "xm.h"
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/*
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* Allow things in gdb to be declared "const". If compiling ANSI, it
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* just works. If compiling with gcc but non-ansi, redefine to __const__.
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* If non-ansi, non-gcc, then eliminate "const" entirely, making those
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* objects be read-write rather than read-only.
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*/
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#ifndef const
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#ifndef __STDC__
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# ifdef __GNUC__
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# define const __const__
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# else
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# define const /*nothing*/
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# endif /* GNUC */
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#endif /* STDC */
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#endif /* const */
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#ifndef volatile
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#ifndef __STDC__
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# ifdef __GNUC__
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# define volatile __volatile__
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# else
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# define volatile /*nothing*/
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# endif /* GNUC */
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#endif /* STDC */
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#endif /* volatile */
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/* Defaults for system-wide constants (if not defined by xm.h, we fake it). */
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#if !defined (UINT_MAX)
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#define UINT_MAX 0xffffffff
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#endif
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#if !defined (LONG_MAX)
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#define LONG_MAX 0x7fffffff
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#endif
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#if !defined (INT_MAX)
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#define INT_MAX 0x7fffffff
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#endif
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#if !defined (INT_MIN)
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/* Two's complement, 32 bit. */
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#define INT_MIN -0x80000000
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#endif
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/* Number of bits in a char or unsigned char for the target machine.
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Just like CHAR_BIT in <limits.h> but describes the target machine. */
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#if !defined (TARGET_CHAR_BIT)
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#define TARGET_CHAR_BIT 8
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#endif
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/* Number of bits in a short or unsigned short for the target machine. */
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#if !defined (TARGET_SHORT_BIT)
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#define TARGET_SHORT_BIT (sizeof (short) * TARGET_CHAR_BIT)
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#endif
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/* Number of bits in an int or unsigned int for the target machine. */
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#if !defined (TARGET_INT_BIT)
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#define TARGET_INT_BIT (sizeof (int) * TARGET_CHAR_BIT)
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#endif
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/* Number of bits in a long or unsigned long for the target machine. */
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#if !defined (TARGET_LONG_BIT)
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#define TARGET_LONG_BIT (sizeof (long) * TARGET_CHAR_BIT)
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#endif
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/* Number of bits in a long long or unsigned long long for the target machine. */
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#if !defined (TARGET_LONG_LONG_BIT)
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#define TARGET_LONG_LONG_BIT (2 * TARGET_LONG_BIT)
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#endif
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/* Number of bits in a float for the target machine. */
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#if !defined (TARGET_FLOAT_BIT)
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#define TARGET_FLOAT_BIT (sizeof (float) * TARGET_CHAR_BIT)
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#endif
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/* Number of bits in a double for the target machine. */
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#if !defined (TARGET_DOUBLE_BIT)
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#define TARGET_DOUBLE_BIT (sizeof (double) * TARGET_CHAR_BIT)
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#endif
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/* Number of bits in a long double for the target machine. */
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#if !defined (TARGET_LONG_DOUBLE_BIT)
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#define TARGET_LONG_DOUBLE_BIT (2 * TARGET_DOUBLE_BIT)
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#endif
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/* Number of bits in a "complex" for the target machine. */
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#if !defined (TARGET_COMPLEX_BIT)
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#define TARGET_COMPLEX_BIT (2 * TARGET_FLOAT_BIT)
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#endif
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/* Number of bits in a "double complex" for the target machine. */
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#if !defined (TARGET_DOUBLE_COMPLEX_BIT)
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#define TARGET_DOUBLE_COMPLEX_BIT (2 * TARGET_DOUBLE_BIT)
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#endif
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/* Convert a LONGEST to an int. This is used in contexts (e.g. number
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of arguments to a function, number in a value history, register
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number, etc.) where the value must not be larger than can fit
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in an int. */
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#if !defined (longest_to_int)
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#if defined (LONG_LONG)
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#define longest_to_int(x) (((x) > INT_MAX || (x) < INT_MIN) \
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? error ("Value out of range.") : (int) (x))
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#else /* No LONG_LONG. */
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/* Assume sizeof (int) == sizeof (long). */
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#define longest_to_int(x) ((int) (x))
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#endif /* No LONG_LONG. */
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#endif /* No longest_to_int. */
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/* Assorted functions we can declare, now that const and volatile are
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defined. */
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extern char *savestring ();
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extern char *strsave ();
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extern char *concat ();
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#ifdef __STDC__
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extern void *xmalloc (), *xrealloc ();
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#else
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extern char *xmalloc (), *xrealloc ();
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#endif
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extern void free ();
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extern int parse_escape ();
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extern char *reg_names[];
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/* Indicate that these routines do not return to the caller. */
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extern volatile void error(), fatal();
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extern void warning_setup(), warning();
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/* Various possibilities for alloca. */
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#ifndef alloca
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# ifdef __GNUC__
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# define alloca __builtin_alloca
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# else
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# ifdef sparc
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# include <alloca.h>
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# endif
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extern char *alloca ();
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# endif
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#endif
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/* TARGET_BYTE_ORDER and HOST_BYTE_ORDER should be defined to one of these. */
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#if !defined (BIG_ENDIAN)
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#define BIG_ENDIAN 4321
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#endif
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#if !defined (LITTLE_ENDIAN)
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#define LITTLE_ENDIAN 1234
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#endif
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/* Target-system-dependent parameters for GDB.
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The standard thing is to include defs.h. However, files that are
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specific to a particular target can define TM_FILE_OVERRIDE before
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including defs.h, then can include any particular tm-file they desire. */
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/* Target machine definition. This will be a symlink to one of the
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tm-*.h files, built by the `configure' script. */
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#ifndef TM_FILE_OVERRIDE
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#include "tm.h"
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#endif
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/* The bit byte-order has to do just with numbering of bits in
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debugging symbols and such. Conceptually, it's quite separate
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from byte/word byte order. */
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#if !defined (BITS_BIG_ENDIAN)
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#if TARGET_BYTE_ORDER == BIG_ENDIAN
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#define BITS_BIG_ENDIAN 1
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#endif /* Big endian. */
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#if TARGET_BYTE_ORDER == LITTLE_ENDIAN
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#define BITS_BIG_ENDIAN 0
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#endif /* Little endian. */
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#endif /* BITS_BIG_ENDIAN not defined. */
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/* Swap LEN bytes at BUFFER between target and host byte-order. */
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#if TARGET_BYTE_ORDER == HOST_BYTE_ORDER
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#define SWAP_TARGET_AND_HOST(buffer,len)
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#else /* Target and host byte order differ. */
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#define SWAP_TARGET_AND_HOST(buffer,len) \
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{ \
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char tmp; \
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char *p = (char *)(buffer); \
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char *q = ((char *)(buffer)) + len - 1; \
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for (; p < q; p++, q--) \
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{ \
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tmp = *q; \
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*q = *p; \
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*p = tmp; \
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} \
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}
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#endif /* Target and host byte order differ. */
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/* On some machines there are bits in addresses which are not really
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part of the address, but are used by the kernel, the hardware, etc.
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for special purposes. ADDR_BITS_REMOVE takes out any such bits
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so we get a "real" address such as one would find in a symbol
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table. ADDR_BITS_SET sets those bits the way the system wants
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them. */
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#if !defined (ADDR_BITS_REMOVE)
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#define ADDR_BITS_REMOVE(addr) (addr)
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#define ADDR_BITS_SET(addr) (addr)
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#endif /* No ADDR_BITS_REMOVE. */
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#if !defined (SYS_SIGLIST_MISSING)
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#define SYS_SIGLIST_MISSING defined (USG)
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#endif /* No SYS_SIGLIST_MISSING */
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#endif /* no DEFS_H */
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