1 #ifndef _ASM_POWERPC_SWAB_H
2 #define _ASM_POWERPC_SWAB_H
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
11 #include <linux/types.h>
12 #include <linux/compiler.h>
17 #define __SWAB_64_THRU_32__
18 #endif /* __powerpc64__ */
22 static __inline__ __u16 ld_le16(const volatile __u16 *addr)
26 __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
29 #define __arch_swab16p ld_le16
31 static __inline__ void st_le16(volatile __u16 *addr, const __u16 val)
33 __asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
36 static inline void __arch_swab16s(__u16 *addr)
40 #define __arch_swab16s __arch_swab16s
42 static __inline__ __u32 ld_le32(const volatile __u32 *addr)
46 __asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
49 #define __arch_swab32p ld_le32
51 static __inline__ void st_le32(volatile __u32 *addr, const __u32 val)
53 __asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
56 static inline void __arch_swab32s(__u32 *addr)
60 #define __arch_swab32s __arch_swab32s
62 static inline __attribute_const__ __u16 __arch_swab16(__u16 value)
66 __asm__("rlwimi %0,%1,8,16,23"
68 : "r" (value), "0" (value >> 8));
71 #define __arch_swab16 __arch_swab16
73 static inline __attribute_const__ __u32 __arch_swab32(__u32 value)
77 __asm__("rlwimi %0,%1,24,16,23\n\t"
78 "rlwimi %0,%1,8,8,15\n\t"
81 : "r" (value), "0" (value >> 24));
84 #define __arch_swab32 __arch_swab32
86 #endif /* __KERNEL__ */
90 #endif /* _ASM_POWERPC_SWAB_H */