66 lines
2.3 KiB
C
66 lines
2.3 KiB
C
/*
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* Copyright (c) 2007, Takahide Matsutsuka.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*
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* \file
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* Z80 machine-specific difinitions for supporting multithread.
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*
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* \author
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* Takahide Matsutsuka <markn@markn.org>
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*/
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#ifndef __MTARCH_H__
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#define __MTARCH_H__
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/* Unit of the stack is 2byte wide. */
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#ifndef MTARCH_STACKSIZE
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#define MTARCH_STACKSIZE 128
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#endif /* MTARCH_STACKSIZE */
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struct mtarch_thread {
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/*
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* On top of the mtarch_thread must be the address for the stack pointer.
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* See details at mtarch_switch in mtarch.c
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*/
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u16_t *sp;
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/*
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* Stack is 2-byte wide, so please note that you need 2 * MTARCH_STACKSIZE
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* bytes for the stack area for each thread.
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*/
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u16_t stack[MTARCH_STACKSIZE];
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};
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/*
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* A function for debugging purpose, placed here by following other implementations.
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*/
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int mtarch_stack_usage(struct mtarch_thread *t);
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#endif /* __MTARCH_H__ */
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