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Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Harvey Harrison
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Linus Torvalds
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Jan 7, 2009
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@@ -35,3 +35,4 @@ unifdef-y += spu_info.h | |
| unifdef-y += termios.h | ||
| unifdef-y += types.h | ||
| unifdef-y += unistd.h | ||
| unifdef-y += swab.h | ||
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| @@ -0,0 +1,90 @@ | ||
| #ifndef _ASM_POWERPC_SWAB_H | ||
| #define _ASM_POWERPC_SWAB_H | ||
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| /* | ||
| * This program is free software; you can redistribute it and/or | ||
| * modify it under the terms of the GNU General Public License | ||
| * as published by the Free Software Foundation; either version | ||
| * 2 of the License, or (at your option) any later version. | ||
| */ | ||
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| #include <asm/types.h> | ||
| #include <linux/compiler.h> | ||
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| #ifdef __GNUC__ | ||
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| #ifndef __powerpc64__ | ||
| #define __SWAB_64_THRU_32__ | ||
| #endif /* __powerpc64__ */ | ||
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| #ifdef __KERNEL__ | ||
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| static __inline__ __u16 ld_le16(const volatile __u16 *addr) | ||
| { | ||
| __u16 val; | ||
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| __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr)); | ||
| return val; | ||
| } | ||
| #define __arch_swab16p ld_le16 | ||
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| static __inline__ void st_le16(volatile __u16 *addr, const __u16 val) | ||
| { | ||
| __asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr)); | ||
| } | ||
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| static inline void __arch_swab16s(__u16 *addr) | ||
| { | ||
| st_le16(addr, *addr); | ||
| } | ||
| #define __arch_swab16s __arch_swab16s | ||
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| static __inline__ __u32 ld_le32(const volatile __u32 *addr) | ||
| { | ||
| __u32 val; | ||
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| __asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr)); | ||
| return val; | ||
| } | ||
| #define __arch_swab32p ld_le32 | ||
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| static __inline__ void st_le32(volatile __u32 *addr, const __u32 val) | ||
| { | ||
| __asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr)); | ||
| } | ||
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| static inline void __arch_swab32s(__u32 *addr) | ||
| { | ||
| st_le32(addr, *addr); | ||
| } | ||
| #define __arch_swab32s __arch_swab32s | ||
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| static inline __attribute_const__ __u16 __arch_swab16(__u16 value) | ||
| { | ||
| __u16 result; | ||
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| __asm__("rlwimi %0,%1,8,16,23" | ||
| : "=r" (result) | ||
| : "r" (value), "0" (value >> 8)); | ||
| return result; | ||
| } | ||
| #define __arch_swab16 __arch_swab16 | ||
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| static inline __attribute_const__ __u32 __arch_swab32(__u32 value) | ||
| { | ||
| __u32 result; | ||
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| __asm__("rlwimi %0,%1,24,16,23\n\t" | ||
| "rlwimi %0,%1,8,8,15\n\t" | ||
| "rlwimi %0,%1,24,0,7" | ||
| : "=r" (result) | ||
| : "r" (value), "0" (value >> 24)); | ||
| return result; | ||
| } | ||
| #define __arch_swab32 __arch_swab32 | ||
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| #endif /* __KERNEL__ */ | ||
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| #endif /* __GNUC__ */ | ||
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| #endif /* _ASM_POWERPC_SWAB_H */ |