This is a new design, but the syscall interface is like Linux, the read/write/open/close/ syscalls are the same ABI.
As for unsafe, it would be possible to make much less of the kernel unsafe. The kernel allocation could be exposed in an interface like this:
struct Memory {
address: usize
}
impl Memory {
fn new() -> Option<Memory>;
fn realloc(&mut self, size: usize) -> Option<Memory>;
fn size(&self) -> usize
}
impl Drop for Memory {
fn drop(&mut self)
}
PIO could be wrapped up MUCH better:
PIO8, PIO16, and PIO32 could handle inb, inw, ind. A lot of my driver bugs have come from using the wrong size!
MMIO could be handled similarly.
The PCI driver could give drivers a limited set of PIO and MMIO structs to operate on
