to use assembly to do things that aren't possible with Rust code. For example, to make an HVC (hypervisor call) to tell the firmware to power off the system: use core::arch::asm; use core::panic::PanicInfo;

to use assembly to do things that aren't possible with Rust code. For example, to make an HVC (hypervisor call) to tell the firmware to power off the system: use core::arch::asm; use core::panic::PanicInfo;