This crate defines the entry point _sel4_start and a Rust #[lang =
"start"] entry point which the _sel4_start calls after initializing the
global BootInfo instance which is also defined in this crate. This is used
only for the "initial thread" of the system, which is the first thread that
seL4 starts. In the BootInfo are many wonderous things. See the seL4
manual, table 9.2 on
page 39, for canonical information about the content of the BootInfo.
The initial thread is created with 16K of stack space.