[PATCH] arm: add __bswapsi2 support

[Jean-Christophe PLAGNIOL-VILLARD]

HI,

can you revert this one

as it's not needed anymore with the swab implementation update

Best Regards,
J.
On 18:10 Fri 14 Jan     , Jean-Christophe PLAGNIOL-VILLARD wrote:
> 32-bit endian conversion
> 
> needed by gcc 4.5.1
> 
> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
> ---
>  arch/arm/lib/Makefile    |    1 +
>  arch/arm/lib/_bswapsi2.S |   14 ++++++++++++++
>  2 files changed, 15 insertions(+), 0 deletions(-)
>  create mode 100644 arch/arm/lib/_bswapsi2.S
> 
> diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile
> index 89cb72b..56818e8 100644
> --- a/arch/arm/lib/Makefile
> +++ b/arch/arm/lib/Makefile
> @@ -12,6 +12,7 @@ obj-y	+= lib1funcs.o
>  obj-y	+= ashrdi3.o
>  obj-y	+= ashldi3.o
>  obj-y	+= lshrdi3.o
> +obj-y	+= _bswapsi2.o
>  obj-$(CONFIG_ARM_OPTIMZED_STRING_FUNCTIONS)	+= memcpy.o
>  obj-$(CONFIG_ARM_OPTIMZED_STRING_FUNCTIONS)	+= memset.o
>  
> diff --git a/arch/arm/lib/_bswapsi2.S b/arch/arm/lib/_bswapsi2.S
> new file mode 100644
> index 0000000..7f45fa5
> --- /dev/null
> +++ b/arch/arm/lib/_bswapsi2.S
> @@ -0,0 +1,14 @@
> +#include <linux/linkage.h>
> +#include <asm/assembler.h>
> +
> +ENTRY(__bswapsi2)
> +#if __LINUX_ARM_ARCH__ <= 5
> +	eor	r1, r0, r0, ror #16
> +	bic	r1, r1, #0xff0000
> +	mov	r0, r0, ror #8
> +	eor	r0, r0, r1, lsr #8
> +#else
> +	rev	r0, r0
> +#endif
> +	bx	lr
> +ENDPROC(__bswapsi2)
> -- 
> 1.7.2.3