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[PATCH] headers: enable ppc64 ___arch__swab16 and ___arch__swab32

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This patch cleans up asm-ppc64/byteorder.h to enable ___arch__swab16 and
___arch__swab32 which are marked TODO currently.  It removes ___arch__swab64
because ppc64 does not have short instruction combinations for swab64, the
recent gcc generates enough smart code that is equivalent to hand assembled
code under my tests.

Signed-off-by: GOTO Masanori <gotom@debian.or.jp>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
GOTO Masanori 2005-06-28 20:45:03 -07:00 committed by Linus Torvalds
parent c016e2257a
commit 12822bc272
1 changed files with 0 additions and 10 deletions
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10
include/asm-ppc64/byteorder.h
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@ -40,7 +40,6 @@ static __inline__ void st_le32(volatile __u32 *addr, const __u32 val)
__asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr)); __asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
} }
#if 0
static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 value) static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 value)
{ {
__u16 result; __u16 result;
@ -63,17 +62,8 @@ static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 value)
return result; return result;
} }
static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 value)
{
__u64 result;
#error implement me
}
#define __arch__swab16(x) ___arch__swab16(x) #define __arch__swab16(x) ___arch__swab16(x)
#define __arch__swab32(x) ___arch__swab32(x) #define __arch__swab32(x) ___arch__swab32(x)
#define __arch__swab64(x) ___arch__swab64(x)
#endif
/* The same, but returns converted value from the location pointer by addr. */ /* The same, but returns converted value from the location pointer by addr. */
#define __arch__swab16p(addr) ld_le16(addr) #define __arch__swab16p(addr) ld_le16(addr)