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author | Arnd Bergmann <arnd@arndb.de> | 2009-05-13 22:56:33 (GMT) |
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committer | Arnd Bergmann <arnd@klappe2.(none)> | 2009-06-11 19:02:37 (GMT) |
commit | aafe4dbed0bf6cbdb2e9f03e1d42f8a540d8541d (patch) | |
tree | 5cc3e500ebb234ad82928de0ed680373c616dc44 /include/asm-generic/unaligned.h | |
parent | 9858c60cc2d33b18367b2bc6947e3ea23db26ccb (diff) | |
download | linux-fsl-qoriq-aafe4dbed0bf6cbdb2e9f03e1d42f8a540d8541d.tar.xz |
asm-generic: add generic versions of common headers
These are all kernel internal interfaces that get copied
around a lot. In most cases, architectures can provide
their own optimized versions, but these generic versions
can work as well.
I have tried to use the most common contents of each
header to allow existing architectures to migrate easily.
Thanks to Remis for suggesting a number of cleanups.
Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'include/asm-generic/unaligned.h')
-rw-r--r-- | include/asm-generic/unaligned.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/include/asm-generic/unaligned.h b/include/asm-generic/unaligned.h new file mode 100644 index 0000000..03cf593 --- /dev/null +++ b/include/asm-generic/unaligned.h @@ -0,0 +1,30 @@ +#ifndef __ASM_GENERIC_UNALIGNED_H +#define __ASM_GENERIC_UNALIGNED_H + +/* + * This is the most generic implementation of unaligned accesses + * and should work almost anywhere. + * + * If an architecture can handle unaligned accesses in hardware, + * it may want to use the linux/unaligned/access_ok.h implementation + * instead. + */ +#include <asm/byteorder.h> + +#if defined(__LITTLE_ENDIAN) +# include <linux/unaligned/le_struct.h> +# include <linux/unaligned/be_byteshift.h> +# include <linux/unaligned/generic.h> +# define get_unaligned __get_unaligned_le +# define put_unaligned __put_unaligned_le +#elif defined(__BIG_ENDIAN) +# include <linux/unaligned/be_struct.h> +# include <linux/unaligned/le_byteshift.h> +# include <linux/unaligned/generic.h> +# define get_unaligned __get_unaligned_be +# define put_unaligned __put_unaligned_be +#else +# error need to define endianess +#endif + +#endif /* __ASM_GENERIC_UNALIGNED_H */ |