#![no_std]

use cfg_if::cfg_if;

pub use kernel_arch_interface::Architecture;

/// Returns an absolute address to the given symbol
#[macro_export]
macro_rules! absolute_address {
    ($sym:expr) => {{
        let mut _x: usize;
        #[cfg(target_arch = "aarch64")]
        unsafe {
            core::arch::asm!("ldr {0}, ={1}", out(reg) _x, sym $sym);
        }
        #[cfg(target_arch = "x86_64")]
        unsafe {
            core::arch::asm!("movabsq ${1}, {0}", out(reg) _x, sym $sym, options(att_syntax));
        }
        _x
    }};
}

cfg_if! {
    if #[cfg(target_arch = "aarch64")] {
        extern crate kernel_arch_aarch64 as imp;
    } else if #[cfg(target_arch = "x86_64")] {
        extern crate kernel_arch_x86_64 as imp;
    } else {
        compile_error!("Unsupported architecture");
    }
}

pub use imp::ArchitectureImpl;