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Re: [Minios-devel] [PATCH v3 20/43] mini-os: implement the memmove/memchr



On Wed, Apr 25, 2018 at 11:09:43AM +0100, Julien Grall wrote:
> 
> 
> On 25/04/18 10:37, Huang Shijie wrote:
> >On Wed, Apr 25, 2018 at 10:10:58AM +0100, Julien Grall wrote:
> >>
> >>
> >>On 04/16/2018 07:32 AM, Huang Shijie wrote:
> >>>This patch is split from the Chen Baozi's old patch:
> >>>
> >>>"This activates the ARM code added in the previous patches. On
> >>>  ARM, Mini-OS will boot and display some output on the console. Tested 
> >>> with:"
> >>>
> >>>Note: The code is copied from FreeBSD code:
> >>>       freebsd/contrib/ldns/compat/memmove.c
> >>
> >>That's only for memmove. How about memchr?
> >The memchr is also from the FreeBSD code...
> 
> You specify the file for memmove.c. But not memchr.
> 
> Also, this seems to come from a userspace application and not the kernel.
> Why not importing the assembly version (memmove.S and memcpy.S) that has
> been optimized for aarch64?
okay. I can use the assembly version..

> 
> >
> >>
> >>Also, can you explain in the commit message why you need them?
> >The FDT code will need them..
> 
> It should be explained in the commit message :).
No problem. :)

Thanks
Huang Shijie

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