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author | Steve Reinhardt <stever@eecs.umich.edu> | 2003-10-10 09:57:26 -0700 |
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committer | Steve Reinhardt <stever@eecs.umich.edu> | 2003-10-10 09:57:26 -0700 |
commit | 52b31ea0a6a15b4a88530cfe411224d750e37899 (patch) | |
tree | 6315a9be6545c32bbe975095b1803f156bbcebd1 /sim/cache/lzss_compression.hh | |
parent | 9e7f6da14195f00333df22a77ca4ed8d62bf8140 (diff) | |
download | gem5-52b31ea0a6a15b4a88530cfe411224d750e37899.tar.xz |
File moves for the reorg. Tree is in broken state until I commit the makefile and
#include changes.
--HG--
rename : sim/cache/lzss_compression.cc => base/compression/lzss_compression.cc
rename : sim/cache/lzss_compression.hh => base/compression/lzss_compression.hh
rename : sim/cache/null_compression.hh => base/compression/null_compression.hh
rename : sim/hybrid_pred.cc => base/hybrid_pred.cc
rename : sim/hybrid_pred.hh => base/hybrid_pred.hh
rename : base/aout_object.cc => base/loader/aout_object.cc
rename : base/aout_object.hh => base/loader/aout_object.hh
rename : base/coff_sym.h => base/loader/coff_sym.h
rename : base/coff_symconst.h => base/loader/coff_symconst.h
rename : base/ecoff_object.cc => base/loader/ecoff_object.cc
rename : base/ecoff_object.hh => base/loader/ecoff_object.hh
rename : base/elf_object.cc => base/loader/elf_object.cc
rename : base/elf_object.hh => base/loader/elf_object.hh
rename : base/exec_aout.h => base/loader/exec_aout.h
rename : base/exec_ecoff.h => base/loader/exec_ecoff.h
rename : base/object_file.cc => base/loader/object_file.cc
rename : base/object_file.hh => base/loader/object_file.hh
rename : base/symtab.cc => base/loader/symtab.cc
rename : base/symtab.hh => base/loader/symtab.hh
rename : sim/predictor.hh => base/predictor.hh
rename : sim/sat_counter.cc => base/sat_counter.cc
rename : sim/sat_counter.hh => base/sat_counter.hh
rename : sim/base_cpu.cc => cpu/base_cpu.cc
rename : sim/base_cpu.hh => cpu/base_cpu.hh
rename : sim/exec_context.cc => cpu/exec_context.cc
rename : sim/exec_context.hh => cpu/exec_context.hh
rename : sim/exetrace.cc => cpu/exetrace.cc
rename : sim/exetrace.hh => cpu/exetrace.hh
rename : sim/op_class.hh => cpu/full_cpu/op_class.hh
rename : sim/smt.hh => cpu/full_cpu/smt.hh
rename : sim/inst_seq.hh => cpu/inst_seq.hh
rename : sim/intr_control.cc => cpu/intr_control.cc
rename : sim/intr_control.hh => cpu/intr_control.hh
rename : sim/memtest.cc => cpu/memtest/memtest.cc
rename : sim/memtest.hh => cpu/memtest/memtest.hh
rename : sim/pc_event.cc => cpu/pc_event.cc
rename : sim/pc_event.hh => cpu/pc_event.hh
rename : sim/simple_cpu.cc => cpu/simple_cpu/simple_cpu.cc
rename : sim/simple_cpu.hh => cpu/simple_cpu/simple_cpu.hh
rename : sim/static_inst.cc => cpu/static_inst.cc
rename : sim/static_inst.hh => cpu/static_inst.hh
extra : convert_revision : 05bd41acb2a424f1a38609fd4ac6df681bb479d6
Diffstat (limited to 'sim/cache/lzss_compression.hh')
-rw-r--r-- | sim/cache/lzss_compression.hh | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/sim/cache/lzss_compression.hh b/sim/cache/lzss_compression.hh deleted file mode 100644 index 5fb47d3f1..000000000 --- a/sim/cache/lzss_compression.hh +++ /dev/null @@ -1,100 +0,0 @@ -/* - * Copyright (c) 2003 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 __LZSS_COMPRESSION_HH__ -#define __LZSS_COMPRESSION_HH__ - -/** @file - * LZSSCompression declarations. - */ - -#include "host.hh" // for uint8_t - -/** - * Simple LZSS compression scheme. - */ -class LZSSCompression -{ - /** - * Finds the longest substrings that start at the given offsets. - * @param src The source block that we search for substrings. - * @param front The smaller offset. - * @param back The larger offset. - * @param size The size of the source block. - * @return The size of the longest substring. - */ - int findSubString(uint8_t *src, int front, int back, int size); - - /** - * Emit an encoded byte to the compressed data array. If the 2 high - * order bits can be signed extended, use 1 byte encoding, if not use 2 - * bytes. - * @param dest The compressed data. - * @param byte The byte to emit. - * @return The number of bytes used to encode. - */ - int emitByte(uint8_t *dest, uint8_t byte); - - /** - * Emit a string reference to the compressed data array. A string reference - * always uses 3 bytes. 1 flag bit, 12 bits for the starting position, and - * 11 bits for the length of the string. This allows compression of 4096 - * byte blocks with string lengths of up to 2048 bytes. - * @param dest The compressed data. - * @param P The starting position in the uncompressed data. - * @param L The length in bytes of the string. - */ - void emitString(uint8_t *dest, uint16_t P, uint16_t L); - - public: - /** - * Compresses the source block and stores it in the destination block. If - * the compressed block grows to larger than the source block, it aborts - * and just performs a copy. - * @param dest The destination block. - * @param src The block to be compressed. - * @param size The size of the source block. - * @return The size of the compressed block. - * - * @pre Destination has enough storage to hold the compressed block. - */ - int compress(uint8_t *dest, uint8_t *src, int size); - - /** - * Unompresses the source block and stores it in the destination block. - * @param dest The destination block. - * @param src The block to be uncompressed. - * @param size The size of the source block. - * @return The size of the uncompressed block. - * - * @pre Destination has enough storage to hold the uncompressed block. - */ - int uncompress(uint8_t *dest, uint8_t *src, int size); -}; - -#endif //__LZSS_COMPRESSION_HH__ |