ableos/kernel/src/holeybytes/mem.rs

//! Security? Multiple address spaces? What are you talking about
//! young adventurer. In this temple, we know no such words.
//!
//! Want your program to override other program's data or even the
//! data of the kernel itself? Sure. This right shall not be infringed.

use hbvm::mem::Address;

pub struct Memory;
impl hbvm::mem::Memory for Memory {
    #[inline]
    unsafe fn load(
        &mut self,
        addr: Address,
        target: *mut u8,
        count: usize,
    ) -> Result<(), hbvm::mem::LoadError> {
        log::info!("Loading memory");
        core::ptr::copy(addr.get() as *const u8, target, count);
        Ok(())
    }

    #[inline]
    unsafe fn store(
        &mut self,
        addr: Address,
        source: *const u8,
        count: usize,
    ) -> Result<(), hbvm::mem::StoreError> {
        // log::info!("Storing memory");

        core::ptr::copy(source, addr.get() as *mut u8, count);
        Ok(())
    }

    #[inline]
    unsafe fn prog_read<T: Copy>(&mut self, addr: Address) -> T {
        (addr.get() as *const T).read()
    }
}