2 * BK Id: SCCS/s.byteorder.h 1.11 10/29/02 10:53:56 trini
4 #ifndef _PPC_BYTEORDER_H
5 #define _PPC_BYTEORDER_H
12 extern __inline__ unsigned ld_le16(const volatile unsigned short *addr)
16 __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
20 extern __inline__ void st_le16(volatile unsigned short *addr, const unsigned val)
22 __asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
25 extern __inline__ unsigned ld_le32(const volatile unsigned *addr)
29 __asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
33 extern __inline__ void st_le32(volatile unsigned *addr, const unsigned val)
35 __asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
38 extern __inline__ unsigned long long ld_le64(const volatile unsigned long long *addr)
40 unsigned char *taddr = (unsigned char *) addr;
41 unsigned long long val;
43 __asm__ __volatile__ ("lwbrx %L0,0,%1" : "=r" (val) : "r" (taddr), "m" (*addr));
44 __asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (taddr+4), "m" (*addr), "0" (val));
48 extern __inline__ void st_le64(volatile unsigned long long *addr, const unsigned long long val)
50 unsigned char *taddr = (unsigned char *) addr;
52 __asm__ __volatile__ ("stwbrx %L1,0,%2" : "=m" (*addr) : "r" (val), "r" (taddr));
53 __asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (taddr+4));
56 static __inline__ __const__ __u16 ___arch__swab16(__u16 value)
60 __asm__("rlwimi %0,%2,8,16,23" : "=&r" (result) : "0" (value >> 8), "r" (value));
64 static __inline__ __const__ __u32 ___arch__swab32(__u32 value)
68 __asm__("rlwimi %0,%2,24,16,23" : "=&r" (result) : "0" (value>>24), "r" (value));
69 __asm__("rlwimi %0,%2,8,8,15" : "=&r" (result) : "0" (result), "r" (value));
70 __asm__("rlwimi %0,%2,24,0,7" : "=&r" (result) : "0" (result), "r" (value));
74 #define __arch__swab32(x) ___arch__swab32(x)
75 #define __arch__swab16(x) ___arch__swab16(x)
77 /* The same, but returns converted value from the location pointer by addr. */
78 #define __arch__swab16p(addr) ld_le16(addr)
79 #define __arch__swab32p(addr) ld_le32(addr)
80 #define __arch__swab64p(addr) ld_le64(addr)
82 /* The same, but do the conversion in situ, ie. put the value back to addr. */
83 #define __arch__swab16s(addr) st_le16(addr,*addr)
84 #define __arch__swab32s(addr) st_le32(addr,*addr)
85 #define __arch__swab64s(addr) st_le64(addr,*addr)
87 #endif /* __KERNEL__ */
89 #if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
90 # define __BYTEORDER_HAS_U64__
91 # define __SWAB_64_THRU_32__
96 #include <linux/byteorder/big_endian.h>
98 #endif /* _PPC_BYTEORDER_H */