On Sat, 27 Jun 2020 01:27:14 +0200
Christian Weisgerber wrote:
> That function simply copies as many (double)words plus a tail of
> bytes as the length argument specifies. Neither source nor destination
> are checked for alignment, so this will happily run a loop of
> unaligned accesses, which
George Koehler wrote:
> On Sat, 27 Jun 2020 01:27:14 +0200
> Christian Weisgerber wrote:
>
> > I'm also intrigued by this aside in the PowerPC ISA documentation:
> > | Moreover, Load with Update instructions may take longer to execute
> > | in some implementations than the corresponding pair
On Sat, 27 Jun 2020 01:27:14 +0200
Christian Weisgerber wrote:
> I'm also intrigued by this aside in the PowerPC ISA documentation:
> | Moreover, Load with Update instructions may take longer to execute
> | in some implementations than the corresponding pair of a non-update
> | Load instruction
Christian Weisgerber:
> Well, I suggested it, so here's my attempt to switch powerpc64's
> libc memmove.S over to 64 bits:
Actually, on second thought:
That function simply copies as many (double)words plus a tail of
bytes as the length argument specifies. Neither source nor destination
are
Well, I suggested it, so here's my attempt to switch powerpc64's
libc memmove.S over to 64 bits:
* Treat length parameter as 64 bits (size_t) instead of 32 (u_int).
* Set up the main loop to copy 64-bit doublewords instead of 32-bit
words.
This definitely needs double and triple checking.
