gem5/base/compression/null_compression.hh
Nathan Binkert 656031b073 make stuff compile on openbsd again
clean up a few other things while we're here.

base/bitfield.hh:
base/compression/null_compression.hh:
    dont #include <inttypes.hh> use "sim/host.hh"
    fix #include guard
base/stats/types.hh:
    dont #include <inttypes.hh> use "sim/host.hh"
kern/linux/aligned.hh:
    dont #include <stdint.hh> use "sim/host.hh"
    fix #include guard
kern/linux/hwrpb.hh:
    fix #include guard

--HG--
extra : convert_revision : 288c687a59a1e770bbb834879173e1a2ea371bce
2004-10-23 12:31:24 -04:00

76 lines
2.7 KiB
C++

/*
* Copyright (c) 2003-2004 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* 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;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT
* OWNER OR CONTRIBUTORS 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.
*/
#ifndef __BASE_COMPRESSION_NULL_COMPRESSION_HH__
#define __BASE_COMPRESSION_NULL_COMPRESSION_HH__
/**
* @file
* This file defines a doNothing compression algorithm.
*/
#include "base/misc.hh" // for fatal()
#include "sim/host.hh"
/**
* A dummy compression class to use when no data compression is desired.
*/
class NullCompression
{
public:
/**
* Uncompress the data, causes a fatal since no data should be compressed.
* @param dest The output buffer.
* @param src The compressed data.
* @param size The number of bytes in src.
*
* @retval The size of the uncompressed data.
*/
static int uncompress(uint8_t * dest, uint8_t *src, int size)
{
fatal("Can't uncompress data");
}
/**
* Compress the data, just returns the source data.
* @param dest The output buffer.
* @param src The data to be compressed.
* @param size The number of bytes in src.
*
* @retval The size of the compressed data.
*/
static int compress(uint8_t *dest, uint8_t *src, int size)
{
memcpy(dest,src,size);
return size;
}
};
#endif //__BASE_COMPRESSION_NULL_COMPRESSION_HH__