[FeTetra]

This adds a check to the ppu_register_function_at function in PPUThread.cpp which checks to see if size is aligned to a word. This fixes some crashes in interpreter mode when calling functions like sys_dbg_write_process_memory to write data which may not be an instruction.

[elad335]

I think you just need to:

size = utils::align<u32>(size + addr % 4, 4);
addr &= -4;

At the very beginning of the function, before size == 0 check.
It's wrong to skip this function, because unaligned size may still point to instructions.