1 #ifndef _ASM_POWERPC_BYTEORDER_H
2 #define _ASM_POWERPC_BYTEORDER_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 <asm/types.h>
12 #include <linux/compiler.h>
17 static __inline__ __u16 ld_le16(const volatile __u16 *addr)
21 __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
25 static __inline__ void st_le16(volatile __u16 *addr, const __u16 val)
27 __asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
30 static __inline__ __u32 ld_le32(const volatile __u32 *addr)
34 __asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
38 static __inline__ void st_le32(volatile __u32 *addr, const __u32 val)
40 __asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
43 static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 value)
47 __asm__("rlwimi %0,%1,8,16,23"
49 : "r" (value), "0" (value >> 8));
53 static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 value)
57 __asm__("rlwimi %0,%1,24,16,23\n\t"
58 "rlwimi %0,%1,8,8,15\n\t"
61 : "r" (value), "0" (value >> 24));
65 #define __arch__swab16(x) ___arch__swab16(x)
66 #define __arch__swab32(x) ___arch__swab32(x)
68 /* The same, but returns converted value from the location pointer by addr. */
69 #define __arch__swab16p(addr) ld_le16(addr)
70 #define __arch__swab32p(addr) ld_le32(addr)
72 /* The same, but do the conversion in situ, ie. put the value back to addr. */
73 #define __arch__swab16s(addr) st_le16(addr,*addr)
74 #define __arch__swab32s(addr) st_le32(addr,*addr)
76 #endif /* __KERNEL__ */
78 #ifndef __STRICT_ANSI__
79 #define __BYTEORDER_HAS_U64__
81 #define __SWAB_64_THRU_32__
82 #endif /* __powerpc64__ */
83 #endif /* __STRICT_ANSI__ */
87 #include <linux/byteorder/big_endian.h>
89 #endif /* _ASM_POWERPC_BYTEORDER_H */