use crate::engine::VMPage; use { crate::{engine::Page, RuntimeErrors}, alloc::vec::Vec, hashbrown::HashMap, log::trace, }; pub struct Memory { inner: HashMap, } impl Memory { pub fn new() -> Self { Self { inner: HashMap::new(), } // } pub fn map_vec(&mut self, address: u64, vec: Vec) { panic!("Mapping vectors into pages is not supported yet"); } } impl Memory { pub fn read_addr8(&mut self, address: u64) -> Result { let (page, offset) = addr_to_page(address); trace!("page {} offset {}", page, offset); match self.inner.get(&page) { Some(page) => { let val = page.data()[offset as usize]; trace!("Value {}", val); Ok(val) } None => { trace!("page not mapped"); Err(RuntimeErrors::PageNotMapped(page)) } } } pub fn read_addr64(&mut self, address: u64) -> u64 { unimplemented!() } pub fn set_addr8(&mut self, address: u64, value: u8) -> Result<(), RuntimeErrors> { let (page, offset) = addr_to_page(address); let ret: Option<(&u64, &mut Page)> = self.inner.get_key_value_mut(&page); match ret { Some((_, page)) => { page.data()[offset as usize] = value; } None => { let mut pg = VMPage::new(); pg.data[offset as usize] = value; self.inner.insert(page, Page::VMPage(pg)); trace!("Mapped page {}", page); } } Ok(()) } pub fn set_addr64(&mut self, address: u64, value: u64) -> u64 { unimplemented!() } } fn addr_to_page(addr: u64) -> (u64, u64) { (addr / 8192, addr % 8192) }