1pub fn initialize() {} 2 3#[inline(always)] 4pub fn read_raw_counter() -> u64 { 5 let mut counter: u64; 6 // SAFETY: Reading the virtual counter register is a side-effect-free CPU instruction. 7 unsafe { 8 core::arch::asm!("mrs {}, cntvct_el0", out(reg) counter); 9 } 10 counter 11}