72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
/* -*- Mode: C; c-basic-offset: 3 -*-
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*
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* datafile.h - Macros for using raw data files included via objcopy.
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*
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* This file is part of Metalkit, a simple collection of modules for
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* writing software that runs on the bare metal. Get the latest code
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* at http://svn.navi.cx/misc/trunk/metalkit/
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*
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* Copyright (c) 2008-2009 Micah Dowty
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __DATAFILE_H__
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#define __DATAFILE_H__
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#include "types.h"
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#include "puff.h"
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typedef struct DataFile {
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uint8 *ptr;
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uint32 size;
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} DataFile;
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#define DECLARE_DATAFILE(symbol, filename) \
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extern uint8 _binary_ ## filename ## _start[]; \
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extern uint8 _binary_ ## filename ## _size[]; \
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static const DataFile symbol[1] = {{ \
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(uint8*) _binary_ ## filename ## _start, \
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(uint32) _binary_ ## filename ## _size, \
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}}
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static inline uint32
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DataFile_Decompress(const DataFile *f, void *buffer, uint32 bufferSize)
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{
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unsigned long sourcelen = f->size;
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unsigned long destlen = bufferSize;
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if (puff(buffer, &destlen, f->ptr, &sourcelen)) {
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asm volatile ("int3");
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}
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return destlen;
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}
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static inline uint32
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DataFile_GetDecompressedSize(const DataFile *f)
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{
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return DataFile_Decompress(f, NULL, 0);
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}
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#endif /* __DATAFILE_H_ */
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