osd-contiki/cpu/cc2430/mtarch.h

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/*
* Copyright (c) 2007, Takahide Matsutsuka.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/*
* \file
* Z80 machine-specific difinitions for supporting multithread.
*
* \author
* Takahide Matsutsuka <markn@markn.org>
*/
#ifndef __MTARCH_H__
#define __MTARCH_H__
/* Unit of the stack is 2byte wide. */
#ifndef MTARCH_STACKSIZE
#define MTARCH_STACKSIZE 128
#endif /* MTARCH_STACKSIZE */
struct mtarch_thread {
/*
* On top of the mtarch_thread must be the address for the stack pointer.
* See details at mtarch_switch in mtarch.c
*/
uint16_t *sp;
/*
* Stack is 2-byte wide, so please note that you need 2 * MTARCH_STACKSIZE
* bytes for the stack area for each thread.
*/
uint16_t stack[MTARCH_STACKSIZE];
};
/*
* A function for debugging purpose, placed here by following other implementations.
*/
int mtarch_stack_usage(struct mtarch_thread *t);
#endif /* __MTARCH_H__ */