1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 **************************************************************************** 11 ****************************************************************************/ 12 #ifndef __ASM_SH_BYTEORDER_H 13 #define __ASM_SH_BYTEORDER_H 14 15 #include <linux/compiler.h> 16 #include <linux/types.h> 17 18 static inline __attribute_const__ __u32 ___arch__swab32(__u32 x) 19 { 20 __asm__( 21 #ifdef __SH5__ 22 "byterev %0, %0\n\t" 23 "shari %0, 32, %0" 24 #else 25 "swap.b %0, %0\n\t" 26 "swap.w %0, %0\n\t" 27 "swap.b %0, %0" 28 #endif 29 : "=r" (x) 30 : "0" (x)); 31 32 return x; 33 } 34 35 static inline __attribute_const__ __u16 ___arch__swab16(__u16 x) 36 { 37 __asm__( 38 #ifdef __SH5__ 39 "byterev %0, %0\n\t" 40 "shari %0, 32, %0" 41 #else 42 "swap.b %0, %0" 43 #endif 44 : "=r" (x) 45 : "0" (x)); 46 47 return x; 48 } 49 50 static inline __u64 ___arch__swab64(__u64 val) 51 { 52 union { 53 struct { __u32 a,b; } s; 54 __u64 u; 55 } v, w; 56 v.u = val; 57 w.s.b = ___arch__swab32(v.s.a); 58 w.s.a = ___arch__swab32(v.s.b); 59 return w.u; 60 } 61 62 #define __arch__swab64(x) ___arch__swab64(x) 63 #define __arch__swab32(x) ___arch__swab32(x) 64 #define __arch__swab16(x) ___arch__swab16(x) 65 66 #ifndef __STRICT_ANSI__ 67 #define __BYTEORDER_HAS_U64__ 68 #define __SWAB_64_THRU_32__ 69 #endif 70 71 #ifdef __LITTLE_ENDIAN__ 72 #include <linux/byteorder/little_endian.h> 73 #else 74 #include <linux/byteorder/big_endian.h> 75 #endif 76 77 #endif 78
