Function relocate

pub unsafe extern "C" fn relocate(
    mapped_addr: usize,
    vaddr: usize,
    dynamic_addr: usize,
)

Apply relocations to the image mapped at mapped_addr so that it can be run at vaddr, using the _DYNAMIC section at dynamic_addr.

Safety

The caller must ensure that this is called only during startup, with the appropriate arguments, since this updates code and data across the binary.