xref: /OK3568_Linux_fs/kernel/arch/powerpc/boot/swab.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _PPC_BOOT_SWAB_H_
3*4882a593Smuzhiyun #define _PPC_BOOT_SWAB_H_
4*4882a593Smuzhiyun 
swab16(u16 x)5*4882a593Smuzhiyun static inline u16 swab16(u16 x)
6*4882a593Smuzhiyun {
7*4882a593Smuzhiyun 	return  ((x & (u16)0x00ffU) << 8) |
8*4882a593Smuzhiyun 		((x & (u16)0xff00U) >> 8);
9*4882a593Smuzhiyun }
10*4882a593Smuzhiyun 
swab32(u32 x)11*4882a593Smuzhiyun static inline u32 swab32(u32 x)
12*4882a593Smuzhiyun {
13*4882a593Smuzhiyun 	return  ((x & (u32)0x000000ffUL) << 24) |
14*4882a593Smuzhiyun 		((x & (u32)0x0000ff00UL) <<  8) |
15*4882a593Smuzhiyun 		((x & (u32)0x00ff0000UL) >>  8) |
16*4882a593Smuzhiyun 		((x & (u32)0xff000000UL) >> 24);
17*4882a593Smuzhiyun }
18*4882a593Smuzhiyun 
swab64(u64 x)19*4882a593Smuzhiyun static inline u64 swab64(u64 x)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun 	return  (u64)((x & (u64)0x00000000000000ffULL) << 56) |
22*4882a593Smuzhiyun 		(u64)((x & (u64)0x000000000000ff00ULL) << 40) |
23*4882a593Smuzhiyun 		(u64)((x & (u64)0x0000000000ff0000ULL) << 24) |
24*4882a593Smuzhiyun 		(u64)((x & (u64)0x00000000ff000000ULL) <<  8) |
25*4882a593Smuzhiyun 		(u64)((x & (u64)0x000000ff00000000ULL) >>  8) |
26*4882a593Smuzhiyun 		(u64)((x & (u64)0x0000ff0000000000ULL) >> 24) |
27*4882a593Smuzhiyun 		(u64)((x & (u64)0x00ff000000000000ULL) >> 40) |
28*4882a593Smuzhiyun 		(u64)((x & (u64)0xff00000000000000ULL) >> 56);
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun #endif /* _PPC_BOOT_SWAB_H_ */
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