96 lines
2.6 KiB
C
96 lines
2.6 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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* $Id: mef.h,v 1.1 2007/11/28 06:13:24 matsutsuka Exp $
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*
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*/
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/*
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* \file
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* mef.h
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* The Micro Executable Format
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* \author
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* Takahide Matsutsuka <markn@markn.org>
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*/
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/*
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* MEF file format:
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* [AreaDecls]
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* BYTE nAreas (0-15)
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* struct AreaSize[nAreas]
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* [Data]
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* binary*
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* [Relocation]
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* WORD nRelocs
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* struct Relocation[nRelocs]
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*/
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#ifndef __MEF_H__
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#define __MEF_H__
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/*
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* mode
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* bit 7: read/write (1) / read only (0)
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* bit 3-0: Area index
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* checksum
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* just a sum of all data of the area
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*/
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#define MEF_AREA_RW 0x80
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#define MEF_AREA_MAX 0x10
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struct Area {
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unsigned char mode;
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uint16_t size;
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uint16_t checksum;
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};
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/*
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* mode
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* bit 7: Absolute (1) / Relative (0)
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* bit 6: MSB (1) / LSB (0) (in byte mode)
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* bit 5: Byte mode (1) / Word mode (0)
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*/
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#define MEF_RELOC_ABSOLUTE 0x80
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#define MEF_RELOC_MSB_BYTE 0x60
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#define MEF_RELOC_LSB_BYTE 0x20
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struct Relocation {
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unsigned char mode;
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uint16_t address;
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uint16_t data;
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};
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unsigned char load_byte();
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void mef_load(unsigned char* offset);
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unsigned char load_byte();
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void mef_reloc(unsigned char* offset, struct Relocation* reloc);
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#endif /* __MEF_H__ */
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