xref: /linux/include/uapi/asm-generic/swab.h (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0)
1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef _ASM_GENERIC_SWAB_H
3 #define _ASM_GENERIC_SWAB_H
4 
5 #include <asm/bitsperlong.h>
6 
7 /*
8  * 32 bit architectures typically (but not always) want to
9  * set __SWAB_64_THRU_32__. In user space, this is only
10  * valid if the compiler supports 64 bit data types.
11  */
12 
13 #if __BITS_PER_LONG == 32
14 #if defined(__GNUC__) && !defined(__STRICT_ANSI__) || defined(__KERNEL__)
15 #define __SWAB_64_THRU_32__
16 #endif
17 #endif
18 
19 #endif /* _ASM_GENERIC_SWAB_H */
20