1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef __ASM_SH_SWAB_H
3 #define __ASM_SH_SWAB_H
4 
5 /*
6  * Copyright (C) 1999  Niibe Yutaka
7  * Copyright (C) 2000, 2001  Paolo Alberelli
8  */
9 #include <linux/compiler.h>
10 #include <linux/types.h>
11 #include <asm-generic/swab.h>
12 
__arch_swab32(__u32 x)13 static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
14 {
15 	__asm__(
16 		"swap.b		%1, %0\n\t"
17 		"swap.w		%0, %0\n\t"
18 		"swap.b		%0, %0"
19 		: "=r" (x)
20 		: "r" (x));
21 
22 	return x;
23 }
24 #define __arch_swab32 __arch_swab32
25 
__arch_swab16(__u16 x)26 static inline __attribute_const__ __u16 __arch_swab16(__u16 x)
27 {
28 	__asm__(
29 		"swap.b		%1, %0"
30 		: "=r" (x)
31 		:  "r" (x));
32 
33 	return x;
34 }
35 #define __arch_swab16 __arch_swab16
36 
__arch_swab64(__u64 val)37 static inline __u64 __arch_swab64(__u64 val)
38 {
39 	union {
40 		struct { __u32 a,b; } s;
41 		__u64 u;
42 	} v, w;
43 	v.u = val;
44 	w.s.b = __arch_swab32(v.s.a);
45 	w.s.a = __arch_swab32(v.s.b);
46 	return w.u;
47 }
48 #define __arch_swab64 __arch_swab64
49 
50 #endif /* __ASM_SH_SWAB_H */
51