0,0 → 1,68 |
#ifndef _LINUX_UNALIGNED_GENERIC_H |
#define _LINUX_UNALIGNED_GENERIC_H |
|
/* |
* Cause a link-time error if we try an unaligned access other than |
* 1,2,4 or 8 bytes long |
*/ |
extern void __bad_unaligned_access_size(void); |
|
#define __get_unaligned_le(ptr) ((__force typeof(*(ptr)))({ \ |
__builtin_choose_expr(sizeof(*(ptr)) == 1, *(ptr), \ |
__builtin_choose_expr(sizeof(*(ptr)) == 2, get_unaligned_le16((ptr)), \ |
__builtin_choose_expr(sizeof(*(ptr)) == 4, get_unaligned_le32((ptr)), \ |
__builtin_choose_expr(sizeof(*(ptr)) == 8, get_unaligned_le64((ptr)), \ |
__bad_unaligned_access_size())))); \ |
})) |
|
#define __get_unaligned_be(ptr) ((__force typeof(*(ptr)))({ \ |
__builtin_choose_expr(sizeof(*(ptr)) == 1, *(ptr), \ |
__builtin_choose_expr(sizeof(*(ptr)) == 2, get_unaligned_be16((ptr)), \ |
__builtin_choose_expr(sizeof(*(ptr)) == 4, get_unaligned_be32((ptr)), \ |
__builtin_choose_expr(sizeof(*(ptr)) == 8, get_unaligned_be64((ptr)), \ |
__bad_unaligned_access_size())))); \ |
})) |
|
#define __put_unaligned_le(val, ptr) ({ \ |
void *__gu_p = (ptr); \ |
switch (sizeof(*(ptr))) { \ |
case 1: \ |
*(u8 *)__gu_p = (__force u8)(val); \ |
break; \ |
case 2: \ |
put_unaligned_le16((__force u16)(val), __gu_p); \ |
break; \ |
case 4: \ |
put_unaligned_le32((__force u32)(val), __gu_p); \ |
break; \ |
case 8: \ |
put_unaligned_le64((__force u64)(val), __gu_p); \ |
break; \ |
default: \ |
__bad_unaligned_access_size(); \ |
break; \ |
} \ |
(void)0; }) |
|
#define __put_unaligned_be(val, ptr) ({ \ |
void *__gu_p = (ptr); \ |
switch (sizeof(*(ptr))) { \ |
case 1: \ |
*(u8 *)__gu_p = (__force u8)(val); \ |
break; \ |
case 2: \ |
put_unaligned_be16((__force u16)(val), __gu_p); \ |
break; \ |
case 4: \ |
put_unaligned_be32((__force u32)(val), __gu_p); \ |
break; \ |
case 8: \ |
put_unaligned_be64((__force u64)(val), __gu_p); \ |
break; \ |
default: \ |
__bad_unaligned_access_size(); \ |
break; \ |
} \ |
(void)0; }) |
|
#endif /* _LINUX_UNALIGNED_GENERIC_H */ |