include/callback.h

   1 /* Remote target system call callback support.
   2    Copyright 1997 Free Software Foundation, Inc.
   3
   4 This file is part of GDB.
   5
   6 This program 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 2 of the License, or
   9 (at your option) any later version.
  10
  11 This program 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 this program; if not, write to the Free Software
  18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  19
  20 #ifndef CALLBACK_H
  21 #define CALLBACK_H
  22
  23 typedef struct host_callback_struct host_callback;
  24
  25 #define MAX_CALLBACK_FDS 10
  26
  27 struct host_callback_struct
  28 {
  29   int (*close) PARAMS ((host_callback *,int));
  30   int (*get_errno) PARAMS ((host_callback *));
  31   int (*isatty) PARAMS ((host_callback *, int));
  32   int (*lseek) PARAMS ((host_callback *, int, long , int));
  33   int (*open) PARAMS ((host_callback *, const char*, int mode));
  34   int (*read) PARAMS ((host_callback *,int,  char *, int));
  35   int (*read_stdin) PARAMS (( host_callback *, char *, int));
  36   int (*rename) PARAMS ((host_callback *, const char *, const char *));
  37   int (*system) PARAMS ((host_callback *, const char *));
  38   long (*time) PARAMS ((host_callback *, long *));
  39   int (*unlink) PARAMS ((host_callback *, const char *));
  40   int (*write) PARAMS ((host_callback *,int, const char *, int));
  41   int (*write_stdout) PARAMS ((host_callback *, const char *, int));
  42   void (*flush_stdout) PARAMS ((host_callback *));
  43   int (*write_stderr) PARAMS ((host_callback *, const char *, int));
  44   void (*flush_stderr) PARAMS ((host_callback *));
  45
  46   /* Used when the target has gone away, so we can close open
  47      handles and free memory etc etc.  */
  48   int (*shutdown) PARAMS ((host_callback *));
  49   int (*init)     PARAMS ((host_callback *));
  50
  51   /* depreciated, use vprintf_filtered - Talk to the user on a console.  */
  52   void (*printf_filtered) PARAMS ((host_callback *, const char *, ...));
  53
  54   /* Talk to the user on a console.
  55      The `void *' is actually `va_list *'.  */
  56   void (*vprintf_filtered) PARAMS ((host_callback *, const char *, void *));
  57
  58   /* Same as vprintf_filtered but to stderr.  */
  59   void (*evprintf_filtered) PARAMS ((host_callback *, const char *, void *));
  60
  61   /* Print an error message and "exit".
  62      In the case of gdb "exiting" means doing a longjmp back to the main
  63      command loop.  */
  64   void (*error) PARAMS ((host_callback *, const char *, ...));
  65
  66   int last_errno;               /* host format */
  67
  68   int fdmap[MAX_CALLBACK_FDS];
  69   char fdopen[MAX_CALLBACK_FDS];
  70   char alwaysopen[MAX_CALLBACK_FDS];
  71 };
  72
  73 extern host_callback default_callback;
  74
  75 /* Mapping of host/target values.  */
  76 /* ??? For debugging purposes, one might want to add a string of the
  77    name of the symbol.  */
  78
  79 typedef struct {
  80   int host_val;
  81   int target_val;
  82 } target_defs_map;
  83
  84 extern target_defs_map errno_map[];
  85 extern target_defs_map open_map[];
  86
  87 extern int host_to_target_errno PARAMS ((int));
  88 extern int target_to_host_open PARAMS ((int));
  89
  90 #endif