Re: [PATCH 2/4] include: Implement __stosb compiler intrinsic.

[Piotr Caban]

On 9/13/21 4:51 PM, Piotr Caban wrote:
> On 9/13/21 2:23 PM, Rémi Bernon wrote:
> > +static inline void __stosb(unsigned char* dst, unsigned char c, 
> > size_t n)
> > +{
> > +    __asm__ __volatile__ ("cld; rep; stosb" : "=D"(dst) : "a"(c), 
> > "D"(dst), "c"(n) : "memory", "cc");
> > +}
>
> I don't know if it's important here but Microsoft's i386 cdecl abi 
> specifies direction flag value on function call. Maybe if __cdecl is 
> added cld call may be removed.

One more thing - shouldn't %ecx be also added as output so gcc knows 
that it has changed?