| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _GENERIC_UNALIGNED_H |
| #define _GENERIC_UNALIGNED_H |
| |
| #include <asm/byteorder.h> |
| |
| #define __get_unaligned_t(type, ptr) ({ \ |
| const struct { type x; } __packed * __pptr = (typeof(__pptr))(ptr); \ |
| __pptr->x; \ |
| }) |
| |
| #define __put_unaligned_t(type, val, ptr) do { \ |
| struct { type x; } __packed * __pptr = (typeof(__pptr))(ptr); \ |
| __pptr->x = (val); \ |
| } while (0) |
| |
| #define get_unaligned(ptr) __get_unaligned_t(typeof(*(ptr)), (ptr)) |
| #define put_unaligned(val, ptr) __put_unaligned_t(typeof(*(ptr)), (val), (ptr)) |
| |
| static inline u16 get_unaligned_le16(const void *p) |
| { |
| return le16_to_cpu(__get_unaligned_t(__le16, p)); |
| } |
| |
| static inline u32 get_unaligned_le32(const void *p) |
| { |
| return le32_to_cpu(__get_unaligned_t(__le32, p)); |
| } |
| |
| static inline u64 get_unaligned_le64(const void *p) |
| { |
| return le64_to_cpu(__get_unaligned_t(__le64, p)); |
| } |
| |
| static inline void put_unaligned_le16(u16 val, void *p) |
| { |
| __put_unaligned_t(__le16, cpu_to_le16(val), p); |
| } |
| |
| static inline void put_unaligned_le32(u32 val, void *p) |
| { |
| __put_unaligned_t(__le32, cpu_to_le32(val), p); |
| } |
| |
| static inline void put_unaligned_le64(u64 val, void *p) |
| { |
| __put_unaligned_t(__le64, cpu_to_le64(val), p); |
| } |
| |
| static inline u16 get_unaligned_be16(const void *p) |
| { |
| return be16_to_cpu(__get_unaligned_t(__be16, p)); |
| } |
| |
| static inline u32 get_unaligned_be32(const void *p) |
| { |
| return be32_to_cpu(__get_unaligned_t(__be32, p)); |
| } |
| |
| static inline u64 get_unaligned_be64(const void *p) |
| { |
| return be64_to_cpu(__get_unaligned_t(__be64, p)); |
| } |
| |
| static inline void put_unaligned_be16(u16 val, void *p) |
| { |
| __put_unaligned_t(__be16, cpu_to_be16(val), p); |
| } |
| |
| static inline void put_unaligned_be32(u32 val, void *p) |
| { |
| __put_unaligned_t(__be32, cpu_to_be32(val), p); |
| } |
| |
| static inline void put_unaligned_be64(u64 val, void *p) |
| { |
| __put_unaligned_t(__be64, cpu_to_be64(val), p); |
| } |
| |
| /* Allow unaligned memory access */ |
| void allow_unaligned(void); |
| |
| #endif |