/********************************************************************** Copyright(c) 2019 Arm Corporation 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 Arm Corporation 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 __LZ0A_CONST_AARCH64_H__ #define __LZ0A_CONST_AARCH64_H__ #include "options_aarch64.h" #ifdef __ASSEMBLY__ .set K , 1024 .set D , IGZIP_HIST_SIZE // Amount of history .set LA , 18 * 16 // Max look-ahead, rounded up to 32 byte boundary .set BSIZE , 2*IGZIP_HIST_SIZE + LA // Nominal buffer size /// Constants for stateless compression #define LAST_BYTES_COUNT 3 // Bytes to prevent reading out of array bounds #define LA_STATELESS 258 // No round up since no data is copied to a buffer .set IGZIP_LVL0_HASH_SIZE , (8 * K) .set IGZIP_HASH8K_HASH_SIZE , (8 * K) .set IGZIP_HASH_HIST_HASH_SIZE , IGZIP_HIST_SIZE .set IGZIP_HASH_MAP_HASH_SIZE , IGZIP_HIST_SIZE #define LVL0_HASH_MASK (IGZIP_LVL0_HASH_SIZE - 1) #define HASH8K_HASH_MASK (IGZIP_HASH8K_HASH_SIZE - 1) #define HASH_HIST_HASH_MASK (IGZIP_HASH_HIST_HASH_SIZE - 1) #define HASH_MAP_HASH_MASK (IGZIP_HASH_MAP_HASH_SIZE - 1) .set MIN_DEF_MATCH , 3 // Minimum length of a match in deflate .set SHORTEST_MATCH , 4 .set SLOP , 8 #define ICF_CODE_BYTES 4 #define LIT_LEN_BIT_COUNT 10 #define DIST_LIT_BIT_COUNT 9 #define LIT_LEN_MASK ((1 << LIT_LEN_BIT_COUNT) - 1) #define LIT_DIST_MASK ((1 << DIST_LIT_BIT_COUNT) - 1) #define DIST_OFFSET LIT_LEN_BIT_COUNT #define EXTRA_BITS_OFFSET (DIST_OFFSET + DIST_LIT_BIT_COUNT) #define LIT (0x1E << DIST_OFFSET) #endif #endif