Re: Simple contribution please?

[Samuel Thibault]

Richard Braun, on Fri 12 Aug 2016 21:16:02 +0200, wrote:
> On Fri, Aug 12, 2016 at 07:57:48PM +0200, Samuel Thibault wrote:
> > It becomes more and more clear that we shouldn't steal functions from
> > glibc into gnumach, it poses cross-building issues from Linux.
> > 
> > Could somebody contribute, or steal from a BSD the following functions,
> > to be included in gnumach/kern/strings.c?
> > 
> > - memcmp
> > - memcpy
> > - memmove
> > - strchr
> > - strsep
> > - strstr
> 
> Note that it's not that "simple" since we'd like implementations that
> aren't naive, i.e. assembly with rep instructions. In particular, it
> makes a huge difference in virtualized guests compared to C-based ones
> because of vmenter/vmexit.
> 
> When such functions are used on device mapped memory.

I guess perhaps even only memcpy is used on device mapped memory?

Samuel