Kernel - My Linux kernel repository

Age	Commit message (Collapse)	Author
2008-10-20	byteorder: use generic C version for value byteswapping	Harvey Harrison
	This makes the new implementation of the byteorder helpers match the old in how it degraded when an arch-defined version was not available: 1) swab() - look for arch defined - if not, use generic c version 2) swabp() - look for arch-defined - if not, deref pointer and use swab() 3) swabs() - look for arch defined - if not, use swabp Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-12	byteorder: add a new include/linux/swab.h to define byteswapping functions	Harvey Harrison
	Collect the implementations from include/linux/byteorder/swab.h, swabb.h in swab.h The functionality provided covers: u16 swab16(u16 val) - return a byteswapped 16 bit value u32 swab32(u32 val) - return a byteswapped 32 bit value u64 swab64(u64 val) - return a byteswapped 64 bit value u32 swahw32(u32 val) - return a wordswapped 32 bit value u32 swahb32(u32 val) - return a high/low byteswapped 32 bit value Similar to above, but return swapped value from a naturally-aligned pointer u16 swab16p(u16 p) u32 swab32p(u32 p) u64 swab64p(u64 p) u32 swahw32p(u32 p) u32 swahb32p(u32 p) Similar to above, but swap the value in-place (in-situ) void swab16s(u16 p) void swab32s(u32 p) void swab64s(u64 p) void swahw32s(u32 p) void swahb32s(u32 p) Arches can override any of these with an optimized version by defining an inline in their asm/byteorder.h (example given for swab16()): u16 __arch_swab16() {} #define __arch_swab16 __arch_swab16 Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>