src/basic/unaligned.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 #include <endian.h>
   5 #include <stdint.h>
   6
   7 #include "unaligned-fundamental.h"
   8
   9 /* BE */
  10
  11 static inline uint16_t unaligned_read_be16(const void *_u) {
  12         const struct __attribute__((__packed__, __may_alias__)) { uint16_t x; } *u = _u;
  13
  14         return be16toh(u->x);
  15 }
  16
  17 static inline uint32_t unaligned_read_be32(const void *_u) {
  18         const struct __attribute__((__packed__, __may_alias__)) { uint32_t x; } *u = _u;
  19
  20         return be32toh(u->x);
  21 }
  22
  23 static inline uint64_t unaligned_read_be64(const void *_u) {
  24         const struct __attribute__((__packed__, __may_alias__)) { uint64_t x; } *u = _u;
  25
  26         return be64toh(u->x);
  27 }
  28
  29 static inline void unaligned_write_be16(void *_u, uint16_t a) {
  30         struct __attribute__((__packed__, __may_alias__)) { uint16_t x; } *u = _u;
  31
  32         u->x = be16toh(a);
  33 }
  34
  35 static inline void unaligned_write_be32(void *_u, uint32_t a) {
  36         struct __attribute__((__packed__, __may_alias__)) { uint32_t x; } *u = _u;
  37
  38         u->x = be32toh(a);
  39 }
  40
  41 static inline void unaligned_write_be64(void *_u, uint64_t a) {
  42         struct __attribute__((__packed__, __may_alias__)) { uint64_t x; } *u = _u;
  43
  44         u->x = be64toh(a);
  45 }
  46
  47 /* LE */
  48
  49 static inline uint16_t unaligned_read_le16(const void *_u) {
  50         const struct __attribute__((__packed__, __may_alias__)) { uint16_t x; } *u = _u;
  51
  52         return le16toh(u->x);
  53 }
  54
  55 static inline uint32_t unaligned_read_le32(const void *_u) {
  56         const struct __attribute__((__packed__, __may_alias__)) { uint32_t x; } *u = _u;
  57
  58         return le32toh(u->x);
  59 }
  60
  61 static inline uint64_t unaligned_read_le64(const void *_u) {
  62         const struct __attribute__((__packed__, __may_alias__)) { uint64_t x; } *u = _u;
  63
  64         return le64toh(u->x);
  65 }
  66
  67 static inline void unaligned_write_le16(void *_u, uint16_t a) {
  68         struct __attribute__((__packed__, __may_alias__)) { uint16_t x; } *u = _u;
  69
  70         u->x = le16toh(a);
  71 }
  72
  73 static inline void unaligned_write_le32(void *_u, uint32_t a) {
  74         struct __attribute__((__packed__, __may_alias__)) { uint32_t x; } *u = _u;
  75
  76         u->x = le32toh(a);
  77 }
  78
  79 static inline void unaligned_write_le64(void *_u, uint64_t a) {
  80         struct __attribute__((__packed__, __may_alias__)) { uint64_t x; } *u = _u;
  81
  82         u->x = le64toh(a);
  83 }