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f3bb041799
Change-Id: I556af7976294f31abd72ac49366f7259e3baf399 Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
73 lines
3.0 KiB
C
73 lines
3.0 KiB
C
/**********************************************************************
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Copyright(c) 2019 Arm Corporation All rights reserved.
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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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* 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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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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* Neither the name of Arm Corporation nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**********************************************************************/
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#ifndef __LZ0A_CONST_AARCH64_H__
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#define __LZ0A_CONST_AARCH64_H__
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#include "options_aarch64.h"
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#ifdef __ASSEMBLY__
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.set K , 1024
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.set D , IGZIP_HIST_SIZE // Amount of history
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.set LA , 18 * 16 // Max look-ahead, rounded up to 32 byte boundary
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.set BSIZE , 2*IGZIP_HIST_SIZE + LA // Nominal buffer size
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/// Constants for stateless compression
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#define LAST_BYTES_COUNT 3 // Bytes to prevent reading out of array bounds
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#define LA_STATELESS 258 // No round up since no data is copied to a buffer
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.set IGZIP_LVL0_HASH_SIZE , (8 * K)
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.set IGZIP_HASH8K_HASH_SIZE , (8 * K)
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.set IGZIP_HASH_HIST_HASH_SIZE , IGZIP_HIST_SIZE
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.set IGZIP_HASH_MAP_HASH_SIZE , IGZIP_HIST_SIZE
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#define LVL0_HASH_MASK (IGZIP_LVL0_HASH_SIZE - 1)
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#define HASH8K_HASH_MASK (IGZIP_HASH8K_HASH_SIZE - 1)
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#define HASH_HIST_HASH_MASK (IGZIP_HASH_HIST_HASH_SIZE - 1)
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#define HASH_MAP_HASH_MASK (IGZIP_HASH_MAP_HASH_SIZE - 1)
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.set MIN_DEF_MATCH , 3 // Minimum length of a match in deflate
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.set SHORTEST_MATCH , 4
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.set SLOP , 8
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#define ICF_CODE_BYTES 4
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#define LIT_LEN_BIT_COUNT 10
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#define DIST_LIT_BIT_COUNT 9
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#define LIT_LEN_MASK ((1 << LIT_LEN_BIT_COUNT) - 1)
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#define LIT_DIST_MASK ((1 << DIST_LIT_BIT_COUNT) - 1)
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#define DIST_OFFSET LIT_LEN_BIT_COUNT
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#define EXTRA_BITS_OFFSET (DIST_OFFSET + DIST_LIT_BIT_COUNT)
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#define LIT (0x1E << DIST_OFFSET)
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#endif
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#endif
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