34 lines
1020 B
Rust
34 lines
1020 B
Rust
use crate::definitions::{XousError, XousPid, MemoryAddress};
|
|
use crate::mem::MemoryManager;
|
|
use crate::{filled_array, println, print};
|
|
|
|
const MAX_PROCESS_COUNT: usize = 256;
|
|
|
|
struct Process {
|
|
satp: Option<MemoryAddress>,
|
|
}
|
|
|
|
impl core::fmt::Debug for Process {
|
|
fn fmt(&self, fmt: &mut core::fmt::Formatter) -> core::result::Result<(), core::fmt::Error> {
|
|
write!(fmt, "Process (satp: 0x{:08x})", match self.satp { Some(s) => s.get(), None => 0 })
|
|
}
|
|
}
|
|
|
|
pub struct ProcessTable {
|
|
processes: [Process; MAX_PROCESS_COUNT],
|
|
}
|
|
|
|
impl ProcessTable {
|
|
pub fn new(mm: &mut MemoryManager) -> Self {
|
|
let mut pt = ProcessTable {
|
|
processes: filled_array![Process { satp: None }; 256],
|
|
};
|
|
|
|
// Allocate a root page table for PID 1
|
|
// mm.create_identity(1).expect("Unable to create identity mapping");
|
|
pt.processes[1].satp = Some(mm.alloc_page(1).unwrap());
|
|
println!("PID 1: {:?}", pt.processes[1]);
|
|
pt
|
|
}
|
|
}
|