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

[Rémi Bernon]

On 9/13/21 4:51 PM, Piotr Caban wrote:
> Hi Rémi,
> 
> 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.
> 

All the ABIs are apparently requiring it to be cleared before a function 
call, or am I missing something? So it looks like it's not needed 
anywhere and I was just over cautious.
-- 
Rémi Bernon <rbernon at codeweavers.com>