diff options
Diffstat (limited to 'sys/lib/libz/crc32.c')
| -rw-r--r-- | sys/lib/libz/crc32.c | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/sys/lib/libz/crc32.c b/sys/lib/libz/crc32.c index df94f8e73d2..b2e59525b27 100644 --- a/sys/lib/libz/crc32.c +++ b/sys/lib/libz/crc32.c @@ -1,4 +1,4 @@ -/* $OpenBSD: crc32.c,v 1.15 2022/05/08 14:07:54 tb Exp $ */ +/* $OpenBSD: crc32.c,v 1.16 2022/10/20 15:36:47 tb Exp $ */ /* crc32.c -- compute the CRC-32 of a data stream * Copyright (C) 1995-2022 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h @@ -97,13 +97,22 @@ # endif #endif +/* If available, use the ARM processor CRC32 instruction. */ +#if defined(__aarch64__) && defined(__ARM_FEATURE_CRC32) && W == 8 +# define ARMCRC32 +#endif + /* Local functions. */ local z_crc_t multmodp OF((z_crc_t a, z_crc_t b)); local z_crc_t x2nmodp OF((z_off64_t n, unsigned k)); -/* If available, use the ARM processor CRC32 instruction. */ -#if defined(__aarch64__) && defined(__ARM_FEATURE_CRC32) && W == 8 -# define ARMCRC32 +#if defined(W) && (!defined(ARMCRC32) || defined(DYNAMIC_CRC_TABLE)) + local z_word_t byte_swap OF((z_word_t word)); +#endif + +#if defined(W) && !defined(ARMCRC32) + local z_crc_t crc_word OF((z_word_t data)); + local z_word_t crc_word_big OF((z_word_t data)); #endif #if defined(W) && (!defined(ARMCRC32) || defined(DYNAMIC_CRC_TABLE)) @@ -644,8 +653,8 @@ unsigned long ZEXPORT crc32_z(crc, buf, len) len &= 7; /* Do three interleaved CRCs to realize the throughput of one crc32x - instruction per cycle. Each CRC is calcuated on Z_BATCH words. The three - CRCs are combined into a single CRC after each set of batches. */ + instruction per cycle. Each CRC is calculated on Z_BATCH words. The + three CRCs are combined into a single CRC after each set of batches. */ while (num >= 3 * Z_BATCH) { crc1 = 0; crc2 = 0; @@ -1085,7 +1094,7 @@ uLong ZEXPORT crc32_combine(crc1, crc2, len2) uLong crc2; z_off_t len2; { - return crc32_combine64(crc1, crc2, len2); + return crc32_combine64(crc1, crc2, (z_off64_t)len2); } /* ========================================================================= */ @@ -1102,11 +1111,11 @@ uLong ZEXPORT crc32_combine_gen64(len2) uLong ZEXPORT crc32_combine_gen(len2) z_off_t len2; { - return crc32_combine_gen64(len2); + return crc32_combine_gen64((z_off64_t)len2); } /* ========================================================================= */ -uLong crc32_combine_op(crc1, crc2, op) +uLong ZEXPORT crc32_combine_op(crc1, crc2, op) uLong crc1; uLong crc2; uLong op; |