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80 lines
3 KiB
C
80 lines
3 KiB
C
/* 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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typedef uint32_t (*adler32_func)(uint32_t adler, const uint8_t *buf, size_t len);
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typedef uint32_t (*adler32_copy_func)(uint32_t adler, uint8_t *dst, const uint8_t *src, 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 crc, const uint8_t *buf, size_t len);
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typedef uint32_t (*crc32_copy_func)(uint32_t crc, uint8_t *dst, const uint8_t *src, size_t len);
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typedef void (*slide_hash_func)(deflate_state *s);
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#ifdef ADLER32_FALLBACK
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uint32_t adler32_c(uint32_t adler, const uint8_t *buf, size_t len);
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uint32_t adler32_copy_c(uint32_t adler, uint8_t *dst, const uint8_t *src, size_t len);
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#endif
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#ifdef CHUNKSET_FALLBACK
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uint8_t* chunkmemset_safe_c(uint8_t *out, uint8_t *from, size_t len, size_t left);
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#endif
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#ifdef COMPARE256_FALLBACK
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uint32_t compare256_8(const uint8_t *src0, const uint8_t *src1);
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uint32_t compare256_64(const uint8_t *src0, const uint8_t *src1);
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uint32_t compare256_c(const uint8_t *src0, const uint8_t *src1);
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#endif
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#ifdef CRC32_BRAID_FALLBACK
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uint32_t crc32_braid(uint32_t crc, const uint8_t *buf, size_t len);
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uint32_t crc32_copy_braid(uint32_t crc, uint8_t *dst, const uint8_t *src, size_t len);
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#endif
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/* Chorba is available whenever braid is needed as a fallback and hasn't been disabled. */
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#if defined(CRC32_BRAID_FALLBACK) && !defined(WITHOUT_CHORBA)
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# define CRC32_CHORBA_FALLBACK
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#endif
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#ifdef CRC32_CHORBA_FALLBACK
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uint32_t crc32_chorba(uint32_t crc, const uint8_t *buf, size_t len);
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uint32_t crc32_copy_chorba(uint32_t crc, uint8_t *dst, const uint8_t *src, size_t len);
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#endif
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#ifdef CHUNKSET_FALLBACK
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void inflate_fast_c(PREFIX3(stream) *strm, uint32_t start);
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#endif
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#ifdef COMPARE256_FALLBACK
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uint32_t longest_match_c(deflate_state *const s, uint32_t cur_match);
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uint32_t longest_match_roll_c(deflate_state *const s, uint32_t cur_match);
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#endif
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#ifdef SLIDE_HASH_FALLBACK
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void slide_hash_c(deflate_state *s);
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#endif
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#ifdef DISABLE_RUNTIME_CPU_DETECTION
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// Generic fallbacks when no native implementation exists
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# ifdef ADLER32_FALLBACK
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# define native_adler32 adler32_c
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# define native_adler32_copy adler32_copy_c
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# endif
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# ifdef CHUNKSET_FALLBACK
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# define native_chunkmemset_safe chunkmemset_safe_c
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# define native_inflate_fast inflate_fast_c
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# endif
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# ifdef COMPARE256_FALLBACK
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# define native_compare256 compare256_c
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# define native_longest_match longest_match_c
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# define native_longest_match_roll longest_match_roll_c
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# endif
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# ifdef CRC32_CHORBA_FALLBACK
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# define native_crc32 crc32_chorba
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# define native_crc32_copy crc32_copy_chorba
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# elif defined(CRC32_BRAID_FALLBACK)
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# define native_crc32 crc32_braid
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# define native_crc32_copy crc32_copy_braid
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# endif
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# ifdef SLIDE_HASH_FALLBACK
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# define native_slide_hash slide_hash_c
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# endif
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#endif
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#endif
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