Re: [PATCH] tools/nolibc: x86: Remove `r8`, `r9` and `r10` from the clobber list

[Willy Tarreau]

Hello Michael,

On Wed, Oct 13, 2021 at 04:24:28PM +0000, Michael Matz wrote:
(...)
> In short:  Ammars initial claim:
> 
> > Linux x86-64 syscall only clobbers rax, rcx and r11 (and "memory").
> > 
> >   - rax for the return value.
> >   - rcx to save the return address.
> >   - r11 to save the rflags.
> > 
> > Other registers are preserved.
> 
> is accurate and I will clarify the psABI to make that explicit.

Many thanks for this very detailed explanation! Ammar, I'll take your
patch.

Thanks all,
Willy