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 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 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 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