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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Copyright(c) 2011-2016 Intel 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 Intel 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.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
%include "options.asm"
%assign K 1024
%assign D IGZIP_HIST_SIZE ;; Amount of history
%assign LA 18 * 16 ;; Max look-ahead, rounded up to 32 byte boundary
%assign 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
%assign IGZIP_LVL0_HASH_SIZE (8 * K)
%assign IGZIP_HASH8K_HASH_SIZE (8 * K)
%assign IGZIP_HASH_HIST_HASH_SIZE IGZIP_HIST_SIZE
%assign IGZIP_HASH_MAP_HASH_SIZE IGZIP_HIST_SIZE
%xdefine LVL0_HASH_MASK (IGZIP_LVL0_HASH_SIZE - 1)
%xdefine HASH8K_HASH_MASK (IGZIP_HASH8K_HASH_SIZE - 1)
%xdefine HASH_HIST_HASH_MASK (IGZIP_HASH_HIST_HASH_SIZE - 1)
%xdefine HASH_MAP_HASH_MASK (IGZIP_HASH_MAP_HASH_SIZE - 1)
%assign MIN_DEF_MATCH 3 ; Minimum length of a match in deflate
%assign SHORTEST_MATCH 4
%assign 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)
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