/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ #pragma once /*** This file is part of systemd. Copyright 2014 Tom Gundersen systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <endian.h> #include <stdint.h> /* BE */ static inline uint16_t unaligned_read_be16(const void *_u) { const uint8_t *u = _u; return (((uint16_t) u[0]) << 8) | ((uint16_t) u[1]); } static inline uint32_t unaligned_read_be32(const void *_u) { const uint8_t *u = _u; return (((uint32_t) unaligned_read_be16(u)) << 16) | ((uint32_t) unaligned_read_be16(u + 2)); } static inline uint64_t unaligned_read_be64(const void *_u) { const uint8_t *u = _u; return (((uint64_t) unaligned_read_be32(u)) << 32) | ((uint64_t) unaligned_read_be32(u + 4)); } static inline void unaligned_write_be16(void *_u, uint16_t a) { uint8_t *u = _u; u[0] = (uint8_t) (a >> 8); u[1] = (uint8_t) a; } static inline void unaligned_write_be32(void *_u, uint32_t a) { uint8_t *u = _u; unaligned_write_be16(u, (uint16_t) (a >> 16)); unaligned_write_be16(u + 2, (uint16_t) a); } static inline void unaligned_write_be64(void *_u, uint64_t a) { uint8_t *u = _u; unaligned_write_be32(u, (uint32_t) (a >> 32)); unaligned_write_be32(u + 4, (uint32_t) a); } /* LE */ static inline uint16_t unaligned_read_le16(const void *_u) { const uint8_t *u = _u; return (((uint16_t) u[1]) << 8) | ((uint16_t) u[0]); } static inline uint32_t unaligned_read_le32(const void *_u) { const uint8_t *u = _u; return (((uint32_t) unaligned_read_le16(u + 2)) << 16) | ((uint32_t) unaligned_read_le16(u)); } static inline uint64_t unaligned_read_le64(const void *_u) { const uint8_t *u = _u; return (((uint64_t) unaligned_read_le32(u + 4)) << 32) | ((uint64_t) unaligned_read_le32(u)); } static inline void unaligned_write_le16(void *_u, uint16_t a) { uint8_t *u = _u; u[0] = (uint8_t) a; u[1] = (uint8_t) (a >> 8); } static inline void unaligned_write_le32(void *_u, uint32_t a) { uint8_t *u = _u; unaligned_write_le16(u, (uint16_t) a); unaligned_write_le16(u + 2, (uint16_t) (a >> 16)); } static inline void unaligned_write_le64(void *_u, uint64_t a) { uint8_t *u = _u; unaligned_write_le32(u, (uint32_t) a); unaligned_write_le32(u + 4, (uint32_t) (a >> 32)); }