include/callback.h

   1 #ifndef CALLBACK_H
   2 #define CALLBACK_H
   3
   4 typedef struct host_callback_struct host_callback;
   5
   6 #define MAX_CALLBACK_FDS 10
   7
   8 struct host_callback_struct
   9 {
  10   int (*close) PARAMS ((host_callback *,int));
  11   int (*get_errno) PARAMS ((host_callback *));
  12   int (*isatty) PARAMS ((host_callback *, int));
  13   int (*lseek) PARAMS ((host_callback *, int, long , int));
  14   int (*open) PARAMS ((host_callback *, const char*, int mode));
  15   int (*read) PARAMS ((host_callback *,int,  char *, int));
  16   int (*read_stdin) PARAMS (( host_callback *, char *, int));
  17   int (*rename) PARAMS ((host_callback *, const char *, const char *));
  18   int (*system) PARAMS ((host_callback *, const char *));
  19   long (*time) PARAMS ((host_callback *, long *));
  20   int (*unlink) PARAMS ((host_callback *, const char *));
  21   int (*write) PARAMS ((host_callback *,int, const char *, int));
  22   int (*write_stdout) PARAMS ((host_callback *, const char *, int));
  23
  24   /* Used when the target has gone away, so we can close open
  25      handles and free memory etc etc.  */
  26   int (*shutdown) PARAMS ((host_callback *));
  27   int (*init)     PARAMS ((host_callback *));
  28
  29   /* Talk to the user on a console.  */
  30   void (*printf_filtered) PARAMS ((host_callback *, const char *, ...));
  31   /* Print an error message and "exit".
  32      In the case of gdb "exiting" means doing a longjmp back to the main
  33      command loop.  */
  34   void (*error) PARAMS ((host_callback *, const char *, ...));
  35
  36   int last_errno;               /* host format */
  37
  38   int fdmap[MAX_CALLBACK_FDS];
  39   char fdopen[MAX_CALLBACK_FDS];
  40   char alwaysopen[MAX_CALLBACK_FDS];
  41 };
  42
  43 extern host_callback default_callback;
  44
  45 /* Mapping of host/target values.  */
  46 /* ??? For debugging purposes, one might want to add a string of the
  47    name of the symbol.  */
  48
  49 typedef struct {
  50   int host_val;
  51   int target_val;
  52 } target_defs_map;
  53
  54 extern target_defs_map errno_map[];
  55 extern target_defs_map open_map[];
  56
  57 extern int host_to_target_errno PARAMS ((int));
  58 extern int target_to_host_open PARAMS ((int));
  59
  60 #endif