| #ifndef __ASM_SH_BYTEORDER_H |
| #define __ASM_SH_BYTEORDER_H |
| |
| /* |
| * Copyright (C) 1999 Niibe Yutaka |
| * Copyright (C) 2000, 2001 Paolo Alberelli |
| */ |
| #include <linux/compiler.h> |
| #include <linux/types.h> |
| |
| static inline __attribute_const__ __u32 ___arch__swab32(__u32 x) |
| { |
| __asm__( |
| #ifdef CONFIG_SUPERH32 |
| "swap.b %0, %0\n\t" |
| "swap.w %0, %0\n\t" |
| "swap.b %0, %0" |
| #else |
| "byterev %0, %0\n\t" |
| "shari %0, 32, %0" |
| #endif |
| : "=r" (x) |
| : "0" (x)); |
| |
| return x; |
| } |
| |
| static inline __attribute_const__ __u16 ___arch__swab16(__u16 x) |
| { |
| __asm__( |
| #ifdef CONFIG_SUPERH32 |
| "swap.b %0, %0" |
| #else |
| "byterev %0, %0\n\t" |
| "shari %0, 32, %0" |
| |
| #endif |
| : "=r" (x) |
| : "0" (x)); |
| |
| return x; |
| } |
| |
| static inline __u64 ___arch__swab64(__u64 val) |
| { |
| union { |
| struct { __u32 a,b; } s; |
| __u64 u; |
| } v, w; |
| v.u = val; |
| w.s.b = ___arch__swab32(v.s.a); |
| w.s.a = ___arch__swab32(v.s.b); |
| return w.u; |
| } |
| |
| #define __arch__swab64(x) ___arch__swab64(x) |
| #define __arch__swab32(x) ___arch__swab32(x) |
| #define __arch__swab16(x) ___arch__swab16(x) |
| |
| #if !defined(__STRICT_ANSI__) || defined(__KERNEL__) |
| # define __BYTEORDER_HAS_U64__ |
| # define __SWAB_64_THRU_32__ |
| #endif |
| |
| #ifdef __LITTLE_ENDIAN__ |
| #include <linux/byteorder/little_endian.h> |
| #else |
| #include <linux/byteorder/big_endian.h> |
| #endif |
| |
| #endif /* __ASM_SH_BYTEORDER_H */ |