A new RegisterState header includes the platform specific RegisterState
header based on the platform being compiled.
The Aarch64 RegisterState header contains stubs for Debug
The platform independent Processor.h file includes the shared processor
code and includes the specific platform header file.
All references to the Arch/x86/Processor.h file have been replaced with
a reference to Arch/Processor.h.
Despite what the declaration would have us believe these are not "u8*".
If they were we wouldn't have to use the & operator to get the address
of them and then cast them to "u8*"/FlatPtr afterwards.
The non CPU specific code of the kernel shouldn't need to deal with
architecture specific registers, and should instead deal with an
abstract view of the machine. This allows us to remove a variety of
architecture specific ifdefs and helps keep the code slightly more
portable.
We do this by exposing the abstract representation of instruction
pointer, stack pointer, base pointer, return register, etc on the
RegisterState struct.
Because the remainder variable will always be 0 unless a fault happened
we should not use it to decide if we have nothing left to memset when
finishing the fast path. This caused not all bytes to be zeroed
if the size was not an exact multiple of sizeof(size_t).
Fixes#8352
