user/sven/linux.git/include/linux/bitrev.h, branch v4.9.139Linux Kernel
https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v4.9.1392014-12-22T16:43:06ZARM: 8187/1: add CONFIG_HAVE_ARCH_BITREVERSE to support rbit instruction2014-12-22T16:43:06ZYalin WangYalin.Wang@sonymobile.com2014-11-03T02:01:03Zurn:sha1:556d2f055bf6d79ce81587dfe774d4dd10da473f
this change add CONFIG_HAVE_ARCH_BITREVERSE config option,
so that we can use some architecture's bitrev hardware instruction
to do bitrev operation.
Introduce __constant_bitrev* macro for constant bitrev operation.
Change __bitrev16() __bitrev32() to be inline function,
don't need export symbol for these tiny functions.
Signed-off-by: Yalin Wang <yalin.wang@sonymobile.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
lib: export bitrev162008-06-06T18:29:10ZHarvey Harrisonharvey.harrison@gmail.com2008-06-06T05:46:19Zurn:sha1:3527fb326f07bc8e85cf66d4f987ebeea24e8e4a
Bluetooth will be able to use this.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Dave Young <hidave.darkstar@gmail.com>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[PATCH] bit reverse library2006-12-08T16:28:39ZAkinobu Mitaakinobu.mita@gmail.com2006-12-08T10:36:25Zurn:sha1:a5cfc1ec58a07074dacb6aa8c79eff864c966d12
This patch provides two bit reverse functions and bit reverse table.
- reverse the order of bits in a u32 value
u8 bitrev8(u8 x);
- reverse the order of bits in a u32 value
u32 bitrev32(u32 x);
- byte reverse table
const u8 byte_rev_table[256];
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>