Hello Matteo,
Στις 2021-06-17 18:27, Matteo Croce έγραψε:
From: Matteo Croce <mcroce@xxxxxxxxxxxxx>
Replace the assembly mem{cpy,move,set} with C equivalent.
Try to access RAM with the largest bit width possible, but without
doing unaligned accesses.
Tested on a BeagleV Starlight with a SiFive U74 core, where the
improvement is noticeable.
There are already generic C implementations for memcpy/memmove/memset at
https://elixir.bootlin.com/linux/v5.13-rc7/source/lib/string.c#L871 but
are doing one byte at a time, I suggest you update them to do
word-by-word copy instead of introducing yet another memcpy/memmove C
implementation on arch/riscv/.
