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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
commit | 19fcec84d8d7d21e796c7624e521b60d28ee21ed (patch) | |
tree | 42d26aa27d1e3f7c0b8bd3fd14e7d7082f5008dc /src/isa-l/igzip/aarch64/lz0a_const_aarch64.h | |
parent | Initial commit. (diff) | |
download | ceph-upstream.tar.xz ceph-upstream.zip |
Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/isa-l/igzip/aarch64/lz0a_const_aarch64.h')
-rw-r--r-- | src/isa-l/igzip/aarch64/lz0a_const_aarch64.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/isa-l/igzip/aarch64/lz0a_const_aarch64.h b/src/isa-l/igzip/aarch64/lz0a_const_aarch64.h new file mode 100644 index 000000000..d55ec09dc --- /dev/null +++ b/src/isa-l/igzip/aarch64/lz0a_const_aarch64.h @@ -0,0 +1,72 @@ +/********************************************************************** + 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 |