Re: 80286 protected mode

On Fri, 11 Oct 2024 22:02:32 +0000, David Brown wrote:

On 11/10/2024 20:55, MitchAlsup1 wrote:

On Fri, 11 Oct 2024 12:10:13 +0000, David Brown wrote:
>

>
Do you think you can just write this :
>
void * memmove(void * s1, const void  * s2, size_t n)
{
    return memmove(s1, s2, n);
}
>
in your library's source?

>
       .global memmove
memmove:
       MM     R2,R1,R3
       RET
>
sure !

>
You are either totally clueless, or you are trolling.  And I know you
are not clueless.
>
This discussion has become pointless.

The point is that there are a few things that may be hard to do
with {decode, pipeline, calculations, specifications...}; but
because they are so universally needed; these, too, should
"get into ISA".
One good reason to put them in ISA is to preserve the programmers
efforts over decades, so they don't have to re-write libc every-
time a new set of instructions come out.
Moving an arbitrary amount of memory from point a to point b
happens to fall into that universal need. Setting an arbitrary
amount of memory to a value also falls into that universal
need.