On 25.09.24 15:55, Sascha Hauer wrote:
> When an architecture defines __HAVE_ARCH_MEMMOVE then the generic
> non optimized memmove is not compiled in. It is needed on ARM64
> as a fallback in certain cases though, so make it available as
> __default_memmove just like done with __default_memcpy already.
>
> Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
Reviewed-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
> ---
> lib/string.c | 10 ++++++++--
> 1 file changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/lib/string.c b/lib/string.c
> index 374f326143..98dd3cffdd 100644
> --- a/lib/string.c
> +++ b/lib/string.c
> @@ -666,7 +666,6 @@ void *mempcpy(void *dest, const void *src, size_t count)
> }
> EXPORT_SYMBOL(mempcpy);
>
> -#ifndef __HAVE_ARCH_MEMMOVE
> /**
> * memmove - Copy one area of memory to another
> * @dest: Where to copy to
> @@ -675,7 +674,7 @@ EXPORT_SYMBOL(mempcpy);
> *
> * Unlike memcpy(), memmove() copes with overlapping areas.
> */
> -void * memmove(void * dest,const void *src,size_t count)
> +void *__default_memmove(void * dest,const void *src,size_t count)
> {
> char *tmp, *s;
>
> @@ -694,6 +693,13 @@ void * memmove(void * dest,const void *src,size_t count)
>
> return dest;
> }
> +EXPORT_SYMBOL(__default_memmove);
> +
> +#ifndef __HAVE_ARCH_MEMMOVE
> +void *memmove(void * dest, const void *src, size_t count)
> + __alias(__default_memmove);
> +void *__memmove(void * dest, const void *src, size_t count)
> + __alias(__default_memmove);
> #endif
> EXPORT_SYMBOL(memmove);
>
>
--
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