defs.h

早期freebsd实现

/* Basic, host-specific, and target-specific definitions for GDB.
   Copyright (C) 1986, 1989, 1991 Free Software Foundation, Inc.

This file is part of GDB.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */

#if !defined (DEFS_H)
#define DEFS_H 1

#include <limits.h>
#include <stdio.h>

/* First include ansidecl.h so we can use the various macro definitions
   here and in all subsequent file inclusions.  */

#include "ansidecl.h"

/* An address in the program being debugged.  Host byte order.  */
typedef unsigned int CORE_ADDR;

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

/* The character C++ uses to build identifiers that must be unique from
   the program's identifiers (such as $this and $$vptr).  */
#define CPLUS_MARKER '$'	/* May be overridden to '.' for SysV */

#include <errno.h>		/* System call error return status */

extern int quit_flag;
extern int immediate_quit;

extern void
quit PARAMS ((void));

#define QUIT { if (quit_flag) quit (); }

/* Command classes are top-level categories into which commands are broken
   down for "help" purposes.  
   Notes on classes: class_alias is for alias commands which are not
   abbreviations of the original command.  class-pseudo is for commands
   which are not really commands nor help topics ("stop").  */

enum command_class
{
  /* Special args to help_list */
  all_classes = -2, all_commands = -1,
  /* Classes of commands */
  no_class = -1, class_run = 0, class_vars, class_stack,
  class_files, class_support, class_info, class_breakpoint,
  class_alias, class_obscure, class_user, class_maintenance,
  class_pseudo
};

/* the cleanup list records things that have to be undone
   if an error happens (descriptors to be closed, memory to be freed, etc.)
   Each link in the chain records a function to call and an
   argument to give it.

   Use make_cleanup to add an element to the cleanup chain.
   Use do_cleanups to do all cleanup actions back to a given
   point in the chain.  Use discard_cleanups to remove cleanups
   from the chain back to a given point, not doing them.  */

struct cleanup
{
  struct cleanup *next;
  void (*function) PARAMS ((PTR));
  PTR arg;
};

/* From blockframe.c */

extern int
inside_entry_func PARAMS ((CORE_ADDR));

extern int
inside_entry_file PARAMS ((CORE_ADDR addr));

extern int
inside_main_func PARAMS ((CORE_ADDR pc));

/* From cplus-dem.c */

extern char *
cplus_demangle PARAMS ((const char *, int));

extern char *
cplus_mangle_opname PARAMS ((char *, int));

/* From libmmalloc.a (memory mapped malloc library) */

extern PTR
mmalloc_attach PARAMS ((int, PTR));

extern PTR
mmalloc_detach PARAMS ((PTR));

extern PTR
mmalloc PARAMS ((PTR, long));

extern PTR
mrealloc PARAMS ((PTR, PTR, long));

extern void
mfree PARAMS ((PTR, PTR));

extern int
mmalloc_setkey PARAMS ((PTR, int, PTR));

extern PTR
mmalloc_getkey PARAMS ((PTR, int));

/* From utils.c */

extern char *
demangle_and_match PARAMS ((const char *, const char *, int));

extern int
strcmp_iw PARAMS ((const char *, const char *));

extern char *
safe_strerror PARAMS ((int));

extern char *
safe_strsignal PARAMS ((int));

extern void
init_malloc PARAMS ((PTR));

extern void
request_quit PARAMS ((int));

extern void
do_cleanups PARAMS ((struct cleanup *));

extern void
discard_cleanups PARAMS ((struct cleanup *));

/* The bare make_cleanup function is one of those rare beasts that
   takes almost any type of function as the first arg and anything that
   will fit in a "void *" as the second arg.

   Should be, once all calls and called-functions are cleaned up:
extern struct cleanup *
make_cleanup PARAMS ((void (*function) (PTR), PTR));

   Until then, lint and/or various type-checking compiler options will
   complain about make_cleanup calls.  It'd be wrong to just cast things,
   since the type actually passed when the function is called would be
   wrong.  */

extern struct cleanup *
make_cleanup ();

extern struct cleanup *
save_cleanups PARAMS ((void));

extern void
restore_cleanups PARAMS ((struct cleanup *));

extern void
free_current_contents PARAMS ((char **));

extern void
null_cleanup PARAMS ((char **));

extern int
myread PARAMS ((int, char *, int));

extern int
query ();

extern void
wrap_here PARAMS ((char *));

extern void
reinitialize_more_filter PARAMS ((void));

extern int
print_insn PARAMS ((CORE_ADDR, FILE *));

extern void
fputs_filtered PARAMS ((const char *, FILE *));

extern void
puts_filtered PARAMS ((char *));

extern void
vfprintf_filtered ();

extern void
fprintf_filtered ();

extern void
fprintfi_filtered ();

extern void
printf_filtered ();

extern void
printfi_filtered ();

extern void
print_spaces PARAMS ((int, FILE *));

extern void
print_spaces_filtered PARAMS ((int, FILE *));

extern char *
n_spaces PARAMS ((int));

extern void
printchar PARAMS ((int, FILE *, int));

extern char *
strdup_demangled PARAMS ((const char *));

extern void
fprint_symbol PARAMS ((FILE *, char *));

extern void
fputs_demangled PARAMS ((char *, FILE *, int));

extern void
perror_with_name PARAMS ((char *));

extern void
print_sys_errmsg PARAMS ((char *, int));

/* From regex.c */

extern char *
re_comp PARAMS ((char *));

/* From symfile.c */

extern void
symbol_file_command PARAMS ((char *, int));

/* From main.c */

extern char *
skip_quoted PARAMS ((char *));

extern char *
gdb_readline PARAMS ((char *));

extern char *
command_line_input PARAMS ((char *, int));

extern void
print_prompt PARAMS ((void));

extern int
batch_mode PARAMS ((void));

extern int
input_from_terminal_p PARAMS ((void));

extern int
catch_errors PARAMS ((int (*) (char *), char *, char *));

/* From printcmd.c */

extern void
set_next_address PARAMS ((CORE_ADDR));

extern void
print_address_symbolic PARAMS ((CORE_ADDR, FILE *, int, char *));

extern void
print_address PARAMS ((CORE_ADDR, FILE *));

/* From source.c */

extern int
openp PARAMS ((char *, int, char *, int, int, char **));

extern void
mod_path PARAMS ((char *, char **));

extern void
directory_command PARAMS ((char *, int));

extern void
init_source_path PARAMS ((void));

/* From findvar.c */

extern int
read_relative_register_raw_bytes PARAMS ((int, char *));

/* From readline (but not in any readline .h files).  */

extern char *
tilde_expand PARAMS ((char *));

/* Structure for saved commands lines
   (for breakpoints, defined commands, etc).  */

struct command_line
{
  struct command_line *next;
  char *line;
  int type;                     /* statement type */
#define CL_END 0
#define CL_NORMAL 1
#define CL_WHILE 2
#define CL_IF 3
#define CL_EXITLOOP 4
#define CL_NOP 5
  struct command_line *body;  /* body of loop for while, body of if */
  struct command_line *elsebody; /* body of else part of if */
};

extern struct command_line *
read_command_lines PARAMS ((int));

extern void
free_command_lines PARAMS ((struct command_line *));

/* String containing the current directory (what getwd would return).  */

extern char *current_directory;

/* Default radixes for input and output.  Only some values supported.  */
extern unsigned input_radix;
extern unsigned output_radix;

/* Baud rate specified for communication with serial target systems.  */
extern char *baud_rate;

/* Languages represented in the symbol table and elsewhere. */

enum language 
{
   language_unknown, 		/* Language not known */
   language_auto,		/* Placeholder for automatic setting */
   language_c, 			/* C */
   language_cplus, 		/* C++ */
   language_m2			/* Modula-2 */
};

/* Return a format string for printf that will print a number in the local
   (language-specific) hexadecimal format.  Result is static and is
   overwritten by the next call.  local_hex_format_custom takes printf
   options like "08" or "l" (to produce e.g. %08x or %lx).  */

#define local_hex_format() (current_language->la_hex_format)

extern char *
local_hex_format_custom PARAMS ((char *));	/* language.c */

/* Return a string that contains a number formatted in the local
   (language-specific) hexadecimal format.  Result is static and is
   overwritten by the next call.  local_hex_string_custom takes printf
   options like "08" or "l".  */

extern char *
local_hex_string PARAMS ((int));		/* language.c */

extern char *
local_hex_string_custom PARAMS ((int, char *));	/* language.c */


/* Host machine definition.  This will be a symlink to one of the
   xm-*.h files, built by the `configure' script.  */

#include "xm.h"

/* If the xm.h file did not define the mode string used to open the
   files, assume that binary files are opened the same way as text
   files */
#ifndef FOPEN_RB
#include "fopen-same.h"
#endif

/*
 * Allow things in gdb to be declared "const".  If compiling ANSI, it
 * just works.  If compiling with gcc but non-ansi, redefine to __const__.
 * If non-ansi, non-gcc, then eliminate "const" entirely, making those
 * objects be read-write rather than read-only.
 */

#ifndef const
#ifndef __STDC__
# ifdef __GNUC__
#  define const __const__
# else
#  define const /*nothing*/
# endif /* GNUC */
#endif /* STDC */
#endif /* const */

#ifndef volatile
#ifndef __STDC__
# ifdef __GNUC__
#  define volatile __volatile__
# else
#  define volatile /*nothing*/
# endif /* GNUC */
#endif /* STDC */
#endif /* volatile */