00001 /* 00002 * Copyright (C) 2001-2004 Jakub Jermar 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 * 00009 * - Redistributions of source code must retain the above copyright 00010 * notice, this list of conditions and the following disclaimer. 00011 * - Redistributions in binary form must reproduce the above copyright 00012 * notice, this list of conditions and the following disclaimer in the 00013 * documentation and/or other materials provided with the distribution. 00014 * - The name of the author may not be used to endorse or promote products 00015 * derived from this software without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 00018 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00019 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 00020 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 00021 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 00022 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00023 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00024 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00025 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 00026 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00027 */ 00028 00035 #ifndef __CONTEXT_H__ 00036 #define __CONTEXT_H__ 00037 00038 #include <arch/types.h> 00039 #include <typedefs.h> 00040 #include <arch/context.h> 00041 00042 00043 #ifndef context_set 00044 #define context_set(c, _pc, stack, size) \ 00045 (c)->pc = (__address) (_pc); \ 00046 (c)->sp = ((__address) (stack)) + (size) - SP_DELTA; 00047 #endif /* context_set */ 00048 00049 extern int context_save_arch(context_t *c); 00050 extern void context_restore_arch(context_t *c) __attribute__ ((noreturn)); 00051 00068 #define context_save(c) context_save_arch(c) 00069 00086 static inline void context_restore(context_t *c) 00087 { 00088 context_restore_arch(c); 00089 } 00090 00091 #endif 00092