Systemd/src/basic/unaligned.h
Zbigniew Jędrzejewski-Szmek d9b02e1697 tree-wide: drop copyright headers from frequent contributors
Fixes #9320.

for p in Shapovalov Chevalier Rozhkov Sievers Mack Herrmann Schmidt Rudenberg Sahani Landden Andersen Watanabe; do
  git grep -e 'Copyright.*'$p -l|xargs perl -i -0pe 's|/([*][*])?[*]\s+([*#]\s+)?Copyright[^\n]*'$p'[^\n]*\s*[*]([*][*])?/\n*|\n|gms; s|\s+([*#]\s+)?Copyright[^\n]*'$p'[^\n]*\n*|\n|gms'
done
2018-06-20 11:58:53 +02:00

101 lines
2.8 KiB
C

/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
#include <endian.h>
#include <stdint.h>
/* BE */
static inline uint16_t unaligned_read_be16(const void *_u) {
const struct __attribute__((packed, may_alias)) { uint16_t x; } *u = _u;
return be16toh(u->x);
}
static inline uint32_t unaligned_read_be32(const void *_u) {
const struct __attribute__((packed, may_alias)) { uint32_t x; } *u = _u;
return be32toh(u->x);
}
static inline uint64_t unaligned_read_be64(const void *_u) {
const struct __attribute__((packed, may_alias)) { uint64_t x; } *u = _u;
return be64toh(u->x);
}
static inline void unaligned_write_be16(void *_u, uint16_t a) {
struct __attribute__((packed, may_alias)) { uint16_t x; } *u = _u;
u->x = be16toh(a);
}
static inline void unaligned_write_be32(void *_u, uint32_t a) {
struct __attribute__((packed, may_alias)) { uint32_t x; } *u = _u;
u->x = be32toh(a);
}
static inline void unaligned_write_be64(void *_u, uint64_t a) {
struct __attribute__((packed, may_alias)) { uint64_t x; } *u = _u;
u->x = be64toh(a);
}
/* LE */
static inline uint16_t unaligned_read_le16(const void *_u) {
const struct __attribute__((packed, may_alias)) { uint16_t x; } *u = _u;
return le16toh(u->x);
}
static inline uint32_t unaligned_read_le32(const void *_u) {
const struct __attribute__((packed, may_alias)) { uint32_t x; } *u = _u;
return le32toh(u->x);
}
static inline uint64_t unaligned_read_le64(const void *_u) {
const struct __attribute__((packed, may_alias)) { uint64_t x; } *u = _u;
return le64toh(u->x);
}
static inline void unaligned_write_le16(void *_u, uint16_t a) {
struct __attribute__((packed, may_alias)) { uint16_t x; } *u = _u;
u->x = le16toh(a);
}
static inline void unaligned_write_le32(void *_u, uint32_t a) {
struct __attribute__((packed, may_alias)) { uint32_t x; } *u = _u;
u->x = le32toh(a);
}
static inline void unaligned_write_le64(void *_u, uint64_t a) {
struct __attribute__((packed, may_alias)) { uint64_t x; } *u = _u;
u->x = le64toh(a);
}
#if __BYTE_ORDER == __BIG_ENDIAN
#define unaligned_read_ne16 unaligned_read_be16
#define unaligned_read_ne32 unaligned_read_be32
#define unaligned_read_ne64 unaligned_read_be64
#define unaligned_write_ne16 unaligned_write_be16
#define unaligned_write_ne32 unaligned_write_be32
#define unaligned_write_ne64 unaligned_write_be64
#else
#define unaligned_read_ne16 unaligned_read_le16
#define unaligned_read_ne32 unaligned_read_le32
#define unaligned_read_ne64 unaligned_read_le64
#define unaligned_write_ne16 unaligned_write_le16
#define unaligned_write_ne32 unaligned_write_le32
#define unaligned_write_ne64 unaligned_write_le64
#endif