use core::arch::asm;

/// Read the RIP register (instruction pointer).

#[inline(always)]

pub fn rip() -> u64 {

    let rip: u64;

    unsafe {

        asm!("leaq 0(%rip), {0}", out(reg) rip, options(att_syntax));

    }

    rip

}

/// Read the RSP register (stack pointer register).

#[inline(always)]

pub fn rsp() -> u64 {

    let rsp: u64;

    unsafe {

        asm!("mov %rsp, {0}", out(reg) rsp, options(att_syntax));

    }

    rsp

}

/// Read the RBP register (base pointer register).

#[inline(always)]

pub fn rbp() -> u64 {

    let rbp: u64;

    unsafe {

        asm!("mov %rbp, {0}", out(reg) rbp, options(att_syntax));

    }

    rbp

}