1 /* 2 * Copyright 2009 Analog Devices Inc. 3 * 4 * Licensed under the GPL-2 or later. 5 */ 6 7 #ifndef _UAPI_BLACKFIN_SWAB_H 8 #define _UAPI_BLACKFIN_SWAB_H 9 10 #include <linux/types.h> 11 #include <asm-generic/swab.h> 12 13 #ifdef __GNUC__ 14 __arch_swahb32(__u32 xx)15static __inline__ __attribute_const__ __u32 __arch_swahb32(__u32 xx) 16 { 17 __u32 tmp; 18 __asm__("%1 = %0 >> 8 (V);\n\t" 19 "%0 = %0 << 8 (V);\n\t" 20 "%0 = %0 | %1;\n\t" 21 : "+d"(xx), "=&d"(tmp)); 22 return xx; 23 } 24 #define __arch_swahb32 __arch_swahb32 25 __arch_swahw32(__u32 xx)26static __inline__ __attribute_const__ __u32 __arch_swahw32(__u32 xx) 27 { 28 __u32 rv; 29 __asm__("%0 = PACK(%1.L, %1.H);\n\t": "=d"(rv): "d"(xx)); 30 return rv; 31 } 32 #define __arch_swahw32 __arch_swahw32 33 __arch_swab32(__u32 xx)34static __inline__ __attribute_const__ __u32 __arch_swab32(__u32 xx) 35 { 36 return __arch_swahb32(__arch_swahw32(xx)); 37 } 38 #define __arch_swab32 __arch_swab32 39 __arch_swab16(__u16 xx)40static __inline__ __attribute_const__ __u16 __arch_swab16(__u16 xx) 41 { 42 __u32 xw = xx; 43 __asm__("%0 <<= 8;\n %0.L = %0.L + %0.H (NS);\n": "+d"(xw)); 44 return (__u16)xw; 45 } 46 #define __arch_swab16 __arch_swab16 47 48 #endif /* __GNUC__ */ 49 50 #endif /* _UAPI_BLACKFIN_SWAB_H */ 51