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usr
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src
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linux-headers-5.4.0-113-generic
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include
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linux
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unaligned
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Filename :
generic.h
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/* SPDX-License-Identifier: GPL-2.0 */ #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 */