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-rw-r--r--src/basic/unaligned.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/src/basic/unaligned.h b/src/basic/unaligned.h
index d6181dd9a9..a8115eaa1f 100644
--- a/src/basic/unaligned.h
+++ b/src/basic/unaligned.h
@@ -21,8 +21,11 @@
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;
@@ -64,3 +67,47 @@ static inline void unaligned_write_be64(void *_u, uint64_t a) {
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));
+}