214 lines
6.2 KiB
C
214 lines
6.2 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Based on BLAKE3 v1.3.1, https://github.com/BLAKE3-team/BLAKE3
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* Copyright (c) 2019-2020 Samuel Neves and Jack O'Connor
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* Copyright (c) 2021-2022 Tino Reichardt <milky-zfs@mcmilk.de>
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*/
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#ifndef BLAKE3_IMPL_H
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#define BLAKE3_IMPL_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <sys/types.h>
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#include <sys/blake3.h>
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#include <sys/simd.h>
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/*
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* Methods used to define BLAKE3 assembler implementations
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*/
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typedef void (*blake3_compress_in_place_f)(uint32_t cv[8],
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const uint8_t block[BLAKE3_BLOCK_LEN],
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uint8_t block_len, uint64_t counter,
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uint8_t flags);
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typedef void (*blake3_compress_xof_f)(const uint32_t cv[8],
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const uint8_t block[BLAKE3_BLOCK_LEN], uint8_t block_len,
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uint64_t counter, uint8_t flags, uint8_t out[64]);
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typedef void (*blake3_hash_many_f)(const uint8_t * const *inputs,
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size_t num_inputs, size_t blocks, const uint32_t key[8],
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uint64_t counter, boolean_t increment_counter, uint8_t flags,
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uint8_t flags_start, uint8_t flags_end, uint8_t *out);
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typedef boolean_t (*blake3_is_supported_f)(void);
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typedef struct blake3_impl_ops {
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blake3_compress_in_place_f compress_in_place;
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blake3_compress_xof_f compress_xof;
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blake3_hash_many_f hash_many;
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blake3_is_supported_f is_supported;
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int degree;
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const char *name;
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} blake3_ops_t;
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/* Return selected BLAKE3 implementation ops */
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extern const blake3_ops_t *blake3_impl_get_ops(void);
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extern const blake3_ops_t blake3_generic_impl;
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#if defined(__aarch64__) || \
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(defined(__x86_64) && defined(HAVE_SSE2)) || \
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(defined(__PPC64__) && defined(__LITTLE_ENDIAN__))
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extern const blake3_ops_t blake3_sse2_impl;
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#endif
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#if defined(__aarch64__) || \
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(defined(__x86_64) && defined(HAVE_SSE4_1)) || \
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(defined(__PPC64__) && defined(__LITTLE_ENDIAN__))
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extern const blake3_ops_t blake3_sse41_impl;
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#endif
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#if defined(__x86_64) && defined(HAVE_SSE4_1) && defined(HAVE_AVX2)
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extern const blake3_ops_t blake3_avx2_impl;
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#endif
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#if defined(__x86_64) && defined(HAVE_AVX512F) && defined(HAVE_AVX512VL)
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extern const blake3_ops_t blake3_avx512_impl;
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#endif
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#if defined(__x86_64)
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#define MAX_SIMD_DEGREE 16
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#else
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#define MAX_SIMD_DEGREE 4
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#endif
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#define MAX_SIMD_DEGREE_OR_2 (MAX_SIMD_DEGREE > 2 ? MAX_SIMD_DEGREE : 2)
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static const uint32_t BLAKE3_IV[8] = {
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0x6A09E667UL, 0xBB67AE85UL, 0x3C6EF372UL, 0xA54FF53AUL,
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0x510E527FUL, 0x9B05688CUL, 0x1F83D9ABUL, 0x5BE0CD19UL};
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static const uint8_t BLAKE3_MSG_SCHEDULE[7][16] = {
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{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},
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{2, 6, 3, 10, 7, 0, 4, 13, 1, 11, 12, 5, 9, 14, 15, 8},
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{3, 4, 10, 12, 13, 2, 7, 14, 6, 5, 9, 0, 11, 15, 8, 1},
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{10, 7, 12, 9, 14, 3, 13, 15, 4, 0, 11, 2, 5, 8, 1, 6},
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{12, 13, 9, 11, 15, 10, 14, 8, 7, 2, 5, 3, 0, 1, 6, 4},
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{9, 14, 11, 5, 8, 12, 15, 1, 13, 3, 0, 10, 2, 6, 4, 7},
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{11, 15, 5, 0, 1, 9, 8, 6, 14, 10, 2, 12, 3, 4, 7, 13},
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};
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/* Find index of the highest set bit */
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static inline unsigned int highest_one(uint64_t x) {
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#if defined(__GNUC__) || defined(__clang__)
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return (63 ^ __builtin_clzll(x));
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#elif defined(_MSC_VER) && defined(IS_X86_64)
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unsigned long index;
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_BitScanReverse64(&index, x);
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return (index);
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#elif defined(_MSC_VER) && defined(IS_X86_32)
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if (x >> 32) {
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unsigned long index;
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_BitScanReverse(&index, x >> 32);
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return (32 + index);
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} else {
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unsigned long index;
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_BitScanReverse(&index, x);
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return (index);
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}
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#else
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unsigned int c = 0;
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if (x & 0xffffffff00000000ULL) { x >>= 32; c += 32; }
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if (x & 0x00000000ffff0000ULL) { x >>= 16; c += 16; }
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if (x & 0x000000000000ff00ULL) { x >>= 8; c += 8; }
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if (x & 0x00000000000000f0ULL) { x >>= 4; c += 4; }
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if (x & 0x000000000000000cULL) { x >>= 2; c += 2; }
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if (x & 0x0000000000000002ULL) { c += 1; }
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return (c);
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#endif
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}
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/* Count the number of 1 bits. */
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static inline unsigned int popcnt(uint64_t x) {
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unsigned int count = 0;
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while (x != 0) {
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count += 1;
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x &= x - 1;
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}
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return (count);
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}
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/*
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* Largest power of two less than or equal to x.
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* As a special case, returns 1 when x is 0.
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*/
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static inline uint64_t round_down_to_power_of_2(uint64_t x) {
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return (1ULL << highest_one(x | 1));
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}
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static inline uint32_t counter_low(uint64_t counter) {
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return ((uint32_t)counter);
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}
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static inline uint32_t counter_high(uint64_t counter) {
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return ((uint32_t)(counter >> 32));
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}
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static inline uint32_t load32(const void *src) {
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const uint8_t *p = (const uint8_t *)src;
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return ((uint32_t)(p[0]) << 0) | ((uint32_t)(p[1]) << 8) |
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((uint32_t)(p[2]) << 16) | ((uint32_t)(p[3]) << 24);
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}
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static inline void load_key_words(const uint8_t key[BLAKE3_KEY_LEN],
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uint32_t key_words[8]) {
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key_words[0] = load32(&key[0 * 4]);
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key_words[1] = load32(&key[1 * 4]);
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key_words[2] = load32(&key[2 * 4]);
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key_words[3] = load32(&key[3 * 4]);
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key_words[4] = load32(&key[4 * 4]);
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key_words[5] = load32(&key[5 * 4]);
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key_words[6] = load32(&key[6 * 4]);
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key_words[7] = load32(&key[7 * 4]);
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}
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static inline void store32(void *dst, uint32_t w) {
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uint8_t *p = (uint8_t *)dst;
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p[0] = (uint8_t)(w >> 0);
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p[1] = (uint8_t)(w >> 8);
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p[2] = (uint8_t)(w >> 16);
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p[3] = (uint8_t)(w >> 24);
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}
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static inline void store_cv_words(uint8_t bytes_out[32], uint32_t cv_words[8]) {
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store32(&bytes_out[0 * 4], cv_words[0]);
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store32(&bytes_out[1 * 4], cv_words[1]);
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store32(&bytes_out[2 * 4], cv_words[2]);
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store32(&bytes_out[3 * 4], cv_words[3]);
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store32(&bytes_out[4 * 4], cv_words[4]);
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store32(&bytes_out[5 * 4], cv_words[5]);
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store32(&bytes_out[6 * 4], cv_words[6]);
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store32(&bytes_out[7 * 4], cv_words[7]);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* BLAKE3_IMPL_H */
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