4lDO2
87 lines
1.8 KiB
Rust
87 lines
1.8 KiB
Rust
#![cfg_attr(not(feature = "std"), no_std)]
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#![feature(doc_cfg)]
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pub use crate::{
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allocator::*,
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arch::*,
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page::*,
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};
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mod allocator;
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mod arch;
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mod page;
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pub const KILOBYTE: usize = 1024;
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pub const MEGABYTE: usize = KILOBYTE * KILOBYTE;
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pub const GIGABYTE: usize = KILOBYTE * MEGABYTE;
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pub const TERABYTE: usize = KILOBYTE * GIGABYTE;
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/// Specific table to be used, needed on some architectures
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//TODO: Use this throughout the code
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#[derive(Clone, Copy, Debug, Eq, Ord, PartialEq, PartialOrd)]
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pub enum TableKind {
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/// Userspace page table
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User,
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/// Kernel page table
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Kernel,
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}
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/// Physical memory address
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#[derive(Clone, Copy, Debug, Eq, Ord, PartialEq, PartialOrd)]
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#[repr(transparent)]
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pub struct PhysicalAddress(usize);
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impl PhysicalAddress {
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#[inline(always)]
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pub const fn new(address: usize) -> Self {
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Self(address)
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}
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#[inline(always)]
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pub fn data(&self) -> usize {
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self.0
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}
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#[inline(always)]
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pub fn add(self, offset: usize) -> Self {
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Self(self.0 + offset)
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}
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}
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/// Virtual memory address
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#[derive(Clone, Copy, Debug, Eq, Ord, PartialEq, PartialOrd)]
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#[repr(transparent)]
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pub struct VirtualAddress(usize);
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impl VirtualAddress {
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#[inline(always)]
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pub const fn new(address: usize) -> Self {
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Self(address)
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}
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#[inline(always)]
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pub fn data(&self) -> usize {
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self.0
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}
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#[inline(always)]
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pub fn add(self, offset: usize) -> Self {
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Self(self.0 + offset)
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}
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#[inline(always)]
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pub fn kind(&self) -> TableKind {
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if (self.0 as isize) < 0 {
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TableKind::Kernel
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} else {
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TableKind::User
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}
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}
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}
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#[derive(Clone, Copy, Debug)]
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pub struct MemoryArea {
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pub base: PhysicalAddress,
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pub size: usize,
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}
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