| wdenk | 591dda5 | 2002-11-18 00:14:45 +0000 | [diff] [blame] | 1 | #ifndef _I386_BYTEORDER_H |
| 2 | #define _I386_BYTEORDER_H |
| 3 | |
| 4 | #include <asm/types.h> |
| 5 | |
| 6 | #ifdef __GNUC__ |
| 7 | |
| wdenk | 591dda5 | 2002-11-18 00:14:45 +0000 | [diff] [blame] | 8 | |
| Graeme Russ | 2fe2a97 | 2008-09-07 07:08:42 +1000 | [diff] [blame] | 9 | static __inline__ __u32 ___arch__swab32(__u32 x) |
| wdenk | 591dda5 | 2002-11-18 00:14:45 +0000 | [diff] [blame] | 10 | { |
| 11 | #ifdef CONFIG_X86_BSWAP |
| 12 | __asm__("bswap %0" : "=r" (x) : "0" (x)); |
| 13 | #else |
| 14 | __asm__("xchgb %b0,%h0\n\t" /* swap lower bytes */ |
| 15 | "rorl $16,%0\n\t" /* swap words */ |
| 16 | "xchgb %b0,%h0" /* swap higher bytes */ |
| 17 | :"=q" (x) |
| 18 | : "0" (x)); |
| 19 | #endif |
| 20 | return x; |
| 21 | } |
| 22 | |
| Graeme Russ | 2fe2a97 | 2008-09-07 07:08:42 +1000 | [diff] [blame] | 23 | static __inline__ __u16 ___arch__swab16(__u16 x) |
| wdenk | 591dda5 | 2002-11-18 00:14:45 +0000 | [diff] [blame] | 24 | { |
| 25 | __asm__("xchgb %b0,%h0" /* swap bytes */ \ |
| 26 | : "=q" (x) \ |
| 27 | : "0" (x)); \ |
| 28 | return x; |
| 29 | } |
| 30 | |
| 31 | #define __arch__swab32(x) ___arch__swab32(x) |
| 32 | #define __arch__swab16(x) ___arch__swab16(x) |
| 33 | |
| 34 | #if !defined(__STRICT_ANSI__) || defined(__KERNEL__) |
| 35 | # define __BYTEORDER_HAS_U64__ |
| 36 | # define __SWAB_64_THRU_32__ |
| 37 | #endif |
| 38 | |
| 39 | #endif /* __GNUC__ */ |
| 40 | |
| 41 | #include <linux/byteorder/little_endian.h> |
| 42 | |
| 43 | #endif /* _I386_BYTEORDER_H */ |