| 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 | /* ??? This interface isn't intended to be specific to any particular kind |
| 21 | of remote (hardware, simulator, whatever). However, at the present |
| 22 | time it is only used by the simulators. At some point this should be |
| 23 | an entity onto itself. For example, it's wrong that the definitions of the |
| 24 | functions host_to_target_errno, target_to_host_open live in the simulator |
| 25 | sources. It would also be wrong for such functions to live in gdb |
| 26 | sources. Until such time perhaps it would be best to avoid adding |
| 27 | prototypes of functions (and thus expanding the definition of the |
| 28 | interface). */ |
| 29 | |
| 30 | #ifndef CALLBACK_H |
| 31 | #define CALLBACK_H |
| 32 | |
| 33 | #ifndef va_start |
| 34 | #include <ansidecl.h> |
| 35 | #ifdef ANSI_PROTOTYPES |
| 36 | #include <stdarg.h> |
| 37 | #else |
| 38 | #include <varargs.h> |
| 39 | #endif |
| 40 | #endif |
| 41 | |
| 42 | typedef struct host_callback_struct host_callback; |
| 43 | |
| 44 | #define MAX_CALLBACK_FDS 10 |
| 45 | |
| 46 | struct host_callback_struct |
| 47 | { |
| 48 | int (*close) PARAMS ((host_callback *,int)); |
| 49 | int (*get_errno) PARAMS ((host_callback *)); |
| 50 | int (*isatty) PARAMS ((host_callback *, int)); |
| 51 | int (*lseek) PARAMS ((host_callback *, int, long , int)); |
| 52 | int (*open) PARAMS ((host_callback *, const char*, int mode)); |
| 53 | int (*read) PARAMS ((host_callback *,int, char *, int)); |
| 54 | int (*read_stdin) PARAMS (( host_callback *, char *, int)); |
| 55 | int (*rename) PARAMS ((host_callback *, const char *, const char *)); |
| 56 | int (*system) PARAMS ((host_callback *, const char *)); |
| 57 | long (*time) PARAMS ((host_callback *, long *)); |
| 58 | int (*unlink) PARAMS ((host_callback *, const char *)); |
| 59 | int (*write) PARAMS ((host_callback *,int, const char *, int)); |
| 60 | int (*write_stdout) PARAMS ((host_callback *, const char *, int)); |
| 61 | void (*flush_stdout) PARAMS ((host_callback *)); |
| 62 | int (*write_stderr) PARAMS ((host_callback *, const char *, int)); |
| 63 | void (*flush_stderr) PARAMS ((host_callback *)); |
| 64 | |
| 65 | /* When present, call to the client to give it the oportunity to |
| 66 | poll any io devices for a request to quit (indicated by a nonzero |
| 67 | return value). */ |
| 68 | int (*poll_quit) PARAMS ((host_callback *)); |
| 69 | |
| 70 | /* Used when the target has gone away, so we can close open |
| 71 | handles and free memory etc etc. */ |
| 72 | int (*shutdown) PARAMS ((host_callback *)); |
| 73 | int (*init) PARAMS ((host_callback *)); |
| 74 | |
| 75 | /* depreciated, use vprintf_filtered - Talk to the user on a console. */ |
| 76 | void (*printf_filtered) PARAMS ((host_callback *, const char *, ...)); |
| 77 | |
| 78 | /* Talk to the user on a console. */ |
| 79 | void (*vprintf_filtered) PARAMS ((host_callback *, const char *, va_list)); |
| 80 | |
| 81 | /* Same as vprintf_filtered but to stderr. */ |
| 82 | void (*evprintf_filtered) PARAMS ((host_callback *, const char *, va_list)); |
| 83 | |
| 84 | /* Print an error message and "exit". |
| 85 | In the case of gdb "exiting" means doing a longjmp back to the main |
| 86 | command loop. */ |
| 87 | void (*error) PARAMS ((host_callback *, const char *, ...)); |
| 88 | |
| 89 | int last_errno; /* host format */ |
| 90 | |
| 91 | int fdmap[MAX_CALLBACK_FDS]; |
| 92 | char fdopen[MAX_CALLBACK_FDS]; |
| 93 | char alwaysopen[MAX_CALLBACK_FDS]; |
| 94 | |
| 95 | /* Marker for thse wanting to do sanity checks. |
| 96 | This should remain the last memeber of this struct to help catch |
| 97 | miscompilation errors. */ |
| 98 | #define HOST_CALLBACK_MAGIC 4705 /* teds constant */ |
| 99 | int magic; |
| 100 | }; |
| 101 | |
| 102 | extern host_callback default_callback; |
| 103 | |
| 104 | /* Mapping of host/target values. */ |
| 105 | /* ??? For debugging purposes, one might want to add a string of the |
| 106 | name of the symbol. */ |
| 107 | |
| 108 | typedef struct { |
| 109 | int host_val; |
| 110 | int target_val; |
| 111 | } target_defs_map; |
| 112 | |
| 113 | extern target_defs_map errno_map[]; |
| 114 | extern target_defs_map open_map[]; |
| 115 | |
| 116 | extern int host_to_target_errno PARAMS ((int)); |
| 117 | extern int target_to_host_open PARAMS ((int)); |
| 118 | |
| 119 | #endif |