Contiki 2.6
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00001 /* 00002 * Copyright (c) 2007, Swedish Institute of Computer Science 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 3. Neither the name of the Institute nor the names of its contributors 00014 * may be used to endorse or promote products derived from this software 00015 * without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 00018 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00019 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00020 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 00021 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00022 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00023 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00024 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00025 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00026 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00027 * SUCH DAMAGE. 00028 * 00029 * @(#)$Id: sym.h,v 1.1 2007/04/25 15:33:29 bg- Exp $ 00030 */ 00031 00032 #ifndef SYM_H 00033 #define SYM_H 00034 00035 typedef void (*sym_func_t)(); 00036 00037 /* 00038 * Even with an explicit cast, it is invalid to convert a function 00039 * pointer to an object pointer or a pointer to void, or vice-versa. 00040 */ 00041 union sym_value { 00042 void *obj; /* Object pointer */ 00043 sym_func_t func; /* or function pointer */ 00044 }; 00045 00046 struct sym_bol { 00047 const char *name; 00048 union sym_value value; 00049 }; 00050 00051 /* Lookup a pointer to an ANSI C object. */ 00052 void *sym_object(const char *name); 00053 00054 /* Lookup a pointer to an ANSI C function. */ 00055 sym_func_t sym_function(const char *name); 00056 00057 extern const int sym_obj_nelts; 00058 extern const int sym_func_nelts; 00059 00060 extern const struct sym_bol sym_obj[/* sym_obj_nelts */]; 00061 extern const struct sym_bol sym_func[/* sym_func__nelts */]; 00062 00063 #endif /* SYM_H */