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| author | Harvey Harrison <harvey.harrison@gmail.com> | 2008-04-29 01:03:30 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-29 08:06:27 -0700 |
| commit | 6510d41954dc6a9c8b1dbca7eaca0f23195ca727 (patch) | |
| tree | 868b5fac25c7c5b80cc5a88eaaab8bf3d693420d /include/asm-m32r | |
| parent | 064106a91be5e76cb42c1ddf5d3871e3a1bd2a23 (diff) | |
| download | lwn-6510d41954dc6a9c8b1dbca7eaca0f23195ca727.tar.gz lwn-6510d41954dc6a9c8b1dbca7eaca0f23195ca727.zip | |
kernel: Move arches to use common unaligned access
Unaligned access is ok for the following arches:
cris, m68k, mn10300, powerpc, s390, x86
Arches that use the memmove implementation for native endian, and
the byteshifting for the opposite endianness.
h8300, m32r, xtensa
Packed struct for native endian, byteshifting for other endian:
alpha, blackfin, ia64, parisc, sparc, sparc64, mips, sh
m86knommu is generic_be for Coldfire, otherwise unaligned access is ok.
frv, arm chooses endianness based on compiler settings, uses the byteshifting
versions. Remove the unaligned trap handler from frv as it is now unused.
v850 is le, uses the byteshifting versions for both be and le.
Remove the now unused asm-generic implementation.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-m32r')
| -rw-r--r-- | include/asm-m32r/unaligned.h | 27 |
1 files changed, 13 insertions, 14 deletions
diff --git a/include/asm-m32r/unaligned.h b/include/asm-m32r/unaligned.h index fccc180c3913..377eb20d1ec6 100644 --- a/include/asm-m32r/unaligned.h +++ b/include/asm-m32r/unaligned.h @@ -1,19 +1,18 @@ #ifndef _ASM_M32R_UNALIGNED_H #define _ASM_M32R_UNALIGNED_H -/* - * For the benefit of those who are trying to port Linux to another - * architecture, here are some C-language equivalents. - */ - -#include <asm/string.h> - -#define get_unaligned(ptr) \ - ({ __typeof__(*(ptr)) __tmp; memmove(&__tmp, (ptr), sizeof(*(ptr))); __tmp; }) - -#define put_unaligned(val, ptr) \ - ({ __typeof__(*(ptr)) __tmp = (val); \ - memmove((ptr), &__tmp, sizeof(*(ptr))); \ - (void)0; }) +#if defined(__LITTLE_ENDIAN__) +# include <linux/unaligned/le_memmove.h> +# include <linux/unaligned/be_byteshift.h> +# include <linux/unaligned/generic.h> +# define get_unaligned __get_unaligned_le +# define put_unaligned __put_unaligned_le +#else +# include <linux/unaligned/be_memmove.h> +# include <linux/unaligned/le_byteshift.h> +# include <linux/unaligned/generic.h> +# define get_unaligned __get_unaligned_be +# define put_unaligned __put_unaligned_be +#endif #endif /* _ASM_M32R_UNALIGNED_H */ |