Revert 175069

third_party/scrypt/lib/util/sysendian.h

-/*-
- * Copyright 2007-2009 Colin Percival
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * This file was originally written by Colin Percival as part of the Tarsnap
- * online backup system.
- */
-#ifndef _SYSENDIAN_H_
-#define _SYSENDIAN_H_
-
-#include "scrypt_platform.h"
-
-/* If we don't have be64enc, the <sys/endian.h> we have isn't usable. */
-#if !HAVE_DECL_BE64ENC
-#undef HAVE_SYS_ENDIAN_H
-#endif
-
-#ifdef HAVE_SYS_ENDIAN_H
-
-#include <sys/endian.h>
-
-#else
-
-#include <stdint.h>
-
-static inline uint32_t
-be32dec(const void *pp)
-{
-        const uint8_t *p = (uint8_t const *)pp;
-
-        return ((uint32_t)(p[3]) + ((uint32_t)(p[2]) << 8) +
-            ((uint32_t)(p[1]) << 16) + ((uint32_t)(p[0]) << 24));
-}
-
-static inline void
-be32enc(void *pp, uint32_t x)
-{
-        uint8_t * p = (uint8_t *)pp;
-
-        p[3] = x & 0xff;
-        p[2] = (x >> 8) & 0xff;
-        p[1] = (x >> 16) & 0xff;
-        p[0] = (x >> 24) & 0xff;
-}
-
-static inline uint64_t
-be64dec(const void *pp)
-{
-        const uint8_t *p = (uint8_t const *)pp;
-
-        return ((uint64_t)(p[7]) + ((uint64_t)(p[6]) << 8) +
-            ((uint64_t)(p[5]) << 16) + ((uint64_t)(p[4]) << 24) +
-            ((uint64_t)(p[3]) << 32) + ((uint64_t)(p[2]) << 40) +
-            ((uint64_t)(p[1]) << 48) + ((uint64_t)(p[0]) << 56));
-}
-
-static inline void
-be64enc(void *pp, uint64_t x)
-{
-        uint8_t * p = (uint8_t *)pp;
-
-        p[7] = x & 0xff;
-        p[6] = (x >> 8) & 0xff;
-        p[5] = (x >> 16) & 0xff;
-        p[4] = (x >> 24) & 0xff;
-        p[3] = (x >> 32) & 0xff;
-        p[2] = (x >> 40) & 0xff;
-        p[1] = (x >> 48) & 0xff;
-        p[0] = (x >> 56) & 0xff;
-}
-
-static inline uint32_t
-le32dec(const void *pp)
-{
-        const uint8_t *p = (uint8_t const *)pp;
-
-        return ((uint32_t)(p[0]) + ((uint32_t)(p[1]) << 8) +
-            ((uint32_t)(p[2]) << 16) + ((uint32_t)(p[3]) << 24));
-}
-
-static inline void
-le32enc(void *pp, uint32_t x)
-{
-        uint8_t * p = (uint8_t *)pp;
-
-        p[0] = x & 0xff;
-        p[1] = (x >> 8) & 0xff;
-        p[2] = (x >> 16) & 0xff;
-        p[3] = (x >> 24) & 0xff;
-}
-
-static inline uint64_t
-le64dec(const void *pp)
-{
-        const uint8_t *p = (uint8_t const *)pp;
-
-        return ((uint64_t)(p[0]) + ((uint64_t)(p[1]) << 8) +
-            ((uint64_t)(p[2]) << 16) + ((uint64_t)(p[3]) << 24) +
-            ((uint64_t)(p[4]) << 32) + ((uint64_t)(p[5]) << 40) +
-            ((uint64_t)(p[6]) << 48) + ((uint64_t)(p[7]) << 56));
-}
-
-static inline void
-le64enc(void *pp, uint64_t x)
-{
-        uint8_t * p = (uint8_t *)pp;
-
-        p[0] = x & 0xff;
-        p[1] = (x >> 8) & 0xff;
-        p[2] = (x >> 16) & 0xff;
-        p[3] = (x >> 24) & 0xff;
-        p[4] = (x >> 32) & 0xff;
-        p[5] = (x >> 40) & 0xff;
-        p[6] = (x >> 48) & 0xff;
-        p[7] = (x >> 56) & 0xff;
-}
-#endif /* !HAVE_SYS_ENDIAN_H */
-
-#endif /* !_SYSENDIAN_H_ */