90 lines
2.2 KiB
C
90 lines
2.2 KiB
C
#ifndef ARGON2_BLAKE2_IMPL_H
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#define ARGON2_BLAKE2_IMPL_H
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#include <stdint.h>
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/* Argon2 Team - Begin Code */
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/*
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Not an exhaustive list, but should cover the majority of modern platforms
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Additionally, the code will always be correct---this is only a performance
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tweak.
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*/
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#if (defined(__BYTE_ORDER__) && \
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(__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)) || \
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defined(__LITTLE_ENDIAN__) || defined(__ARMEL__) || defined(__MIPSEL__) || \
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defined(__AARCH64EL__) || defined(__amd64__) || defined(__i386__) || \
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defined(_M_IX86) || defined(_M_X64) || defined(_M_AMD64) || \
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defined(_M_ARM)
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#define NATIVE_LITTLE_ENDIAN
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#endif
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/* Argon2 Team - End Code */
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static inline uint32_t load32(const void *src) {
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#if defined(NATIVE_LITTLE_ENDIAN)
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return *(const uint32_t *)src;
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#else
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const uint8_t *p = (const uint8_t *)src;
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uint32_t w = *p++;
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w |= (uint32_t)(*p++) << 8;
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w |= (uint32_t)(*p++) << 16;
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w |= (uint32_t)(*p++) << 24;
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return w;
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#endif
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}
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static inline uint64_t load64(const void *src) {
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#if defined(NATIVE_LITTLE_ENDIAN)
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return *(const uint64_t *)src;
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#else
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const uint8_t *p = (const uint8_t *)src;
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uint64_t w = *p++;
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w |= (uint64_t)(*p++) << 8;
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w |= (uint64_t)(*p++) << 16;
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w |= (uint64_t)(*p++) << 24;
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w |= (uint64_t)(*p++) << 32;
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w |= (uint64_t)(*p++) << 40;
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w |= (uint64_t)(*p++) << 48;
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w |= (uint64_t)(*p++) << 56;
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return w;
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#endif
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}
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static inline void store32(void *dst, uint32_t w) {
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#if defined(NATIVE_LITTLE_ENDIAN)
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*(uint32_t *)dst = w;
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#else
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uint8_t *p = (uint8_t *)dst;
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*p++ = (uint8_t)w;
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w >>= 8;
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*p++ = (uint8_t)w;
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w >>= 8;
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*p++ = (uint8_t)w;
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w >>= 8;
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*p++ = (uint8_t)w;
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#endif
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}
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static inline void store64(void *dst, uint64_t w) {
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#if defined(NATIVE_LITTLE_ENDIAN)
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*(uint64_t *)dst = w;
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#else
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uint8_t *p = (uint8_t *)dst;
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*p++ = (uint8_t)w;
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w >>= 8;
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*p++ = (uint8_t)w;
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w >>= 8;
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*p++ = (uint8_t)w;
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w >>= 8;
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*p++ = (uint8_t)w;
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w >>= 8;
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*p++ = (uint8_t)w;
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w >>= 8;
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*p++ = (uint8_t)w;
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w >>= 8;
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*p++ = (uint8_t)w;
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w >>= 8;
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*p++ = (uint8_t)w;
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#endif
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}
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#endif // ARGON2_BLAKE2_IMPL_H
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