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107 lines
4.4 KiB
C
107 lines
4.4 KiB
C
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/* generic_functions.h -- generic C implementations for arch-specific functions.
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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#ifndef GENERIC_FUNCTIONS_H_
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#define GENERIC_FUNCTIONS_H_
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#include "zendian.h"
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Z_INTERNAL uint32_t crc32_fold_reset_c(crc32_fold *crc);
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Z_INTERNAL void crc32_fold_copy_c(crc32_fold *crc, uint8_t *dst, const uint8_t *src, size_t len);
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Z_INTERNAL void crc32_fold_c(crc32_fold *crc, const uint8_t *src, size_t len, uint32_t init_crc);
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Z_INTERNAL uint32_t crc32_fold_final_c(crc32_fold *crc);
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Z_INTERNAL uint32_t adler32_fold_copy_c(uint32_t adler, uint8_t *dst, const uint8_t *src, size_t len);
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typedef uint32_t (*adler32_func)(uint32_t adler, const uint8_t *buf, size_t len);
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typedef uint32_t (*compare256_func)(const uint8_t *src0, const uint8_t *src1);
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typedef uint32_t (*crc32_func)(uint32_t crc32, const uint8_t *buf, size_t len);
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uint32_t adler32_c(uint32_t adler, const uint8_t *buf, size_t len);
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uint32_t chunksize_c(void);
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uint8_t* chunkmemset_safe_c(uint8_t *out, unsigned dist, unsigned len, unsigned left);
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void inflate_fast_c(PREFIX3(stream) *strm, uint32_t start);
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uint32_t PREFIX(crc32_braid)(uint32_t crc, const uint8_t *buf, size_t len);
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uint32_t compare256_c(const uint8_t *src0, const uint8_t *src1);
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#if defined(UNALIGNED_OK) && BYTE_ORDER == LITTLE_ENDIAN
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uint32_t compare256_unaligned_16(const uint8_t *src0, const uint8_t *src1);
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# ifdef HAVE_BUILTIN_CTZ
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uint32_t compare256_unaligned_32(const uint8_t *src0, const uint8_t *src1);
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# endif
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# if defined(UNALIGNED64_OK) && defined(HAVE_BUILTIN_CTZLL)
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uint32_t compare256_unaligned_64(const uint8_t *src0, const uint8_t *src1);
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# endif
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#endif
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typedef void (*slide_hash_func)(deflate_state *s);
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void slide_hash_c(deflate_state *s);
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uint32_t longest_match_c(deflate_state *const s, Pos cur_match);
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# if defined(UNALIGNED_OK) && BYTE_ORDER == LITTLE_ENDIAN
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uint32_t longest_match_unaligned_16(deflate_state *const s, Pos cur_match);
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# ifdef HAVE_BUILTIN_CTZ
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uint32_t longest_match_unaligned_32(deflate_state *const s, Pos cur_match);
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# endif
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# if defined(UNALIGNED64_OK) && defined(HAVE_BUILTIN_CTZLL)
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uint32_t longest_match_unaligned_64(deflate_state *const s, Pos cur_match);
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# endif
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# endif
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uint32_t longest_match_slow_c(deflate_state *const s, Pos cur_match);
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# if defined(UNALIGNED_OK) && BYTE_ORDER == LITTLE_ENDIAN
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uint32_t longest_match_slow_unaligned_16(deflate_state *const s, Pos cur_match);
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uint32_t longest_match_slow_unaligned_32(deflate_state *const s, Pos cur_match);
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# ifdef UNALIGNED64_OK
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uint32_t longest_match_slow_unaligned_64(deflate_state *const s, Pos cur_match);
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# endif
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# endif
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// Select generic implementation for longest_match, longest_match_slow, longest_match_slow functions.
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#if defined(UNALIGNED_OK) && BYTE_ORDER == LITTLE_ENDIAN
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# if defined(UNALIGNED64_OK) && defined(HAVE_BUILTIN_CTZLL)
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# define longest_match_generic longest_match_unaligned_64
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# define longest_match_slow_generic longest_match_slow_unaligned_64
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# define compare256_generic compare256_unaligned_64
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# elif defined(HAVE_BUILTIN_CTZ)
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# define longest_match_generic longest_match_unaligned_32
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# define longest_match_slow_generic longest_match_slow_unaligned_32
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# define compare256_generic compare256_unaligned_32
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# else
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# define longest_match_generic longest_match_unaligned_16
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# define longest_match_slow_generic longest_match_slow_unaligned_16
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# define compare256_generic compare256_unaligned_16
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# endif
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#else
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# define longest_match_generic longest_match_c
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# define longest_match_slow_generic longest_match_slow_c
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# define compare256_generic compare256_c
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#endif
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#ifdef DISABLE_RUNTIME_CPU_DETECTION
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// Generic code
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# define native_adler32 adler32_c
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# define native_adler32_fold_copy adler32_fold_copy_c
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# define native_chunkmemset_safe chunkmemset_safe_c
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# define native_chunksize chunksize_c
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# define native_crc32 PREFIX(crc32_braid)
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# define native_crc32_fold crc32_fold_c
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# define native_crc32_fold_copy crc32_fold_copy_c
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# define native_crc32_fold_final crc32_fold_final_c
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# define native_crc32_fold_reset crc32_fold_reset_c
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# define native_inflate_fast inflate_fast_c
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# define native_slide_hash slide_hash_c
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# define native_longest_match longest_match_generic
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# define native_longest_match_slow longest_match_slow_generic
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# define native_compare256 compare256_generic
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#endif
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#endif
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