start kernel

core0-buffer
Sebastien Bourdeauducq 2020-04-26 09:57:42 +08:00
parent 2be09719f3
commit d8d09e219f
2 changed files with 25 additions and 0 deletions

View File

@ -143,6 +143,10 @@ async fn handle_connection(stream: &TcpStream, control: Rc<RefCell<kernel::Contr
write_header(&stream, Reply::LoadFailed).await?;
write_chunk(&stream, b"kernel is too large").await?;
}
},
Request::RunKernel => {
let mut control = control.borrow_mut();
control.tx.async_send(kernel::Message::StartRequest).await;
}
_ => return Err(Error::UnrecognizedPacket)
}

View File

@ -1,3 +1,4 @@
use core::{ptr, mem};
use log::{debug, error};
use alloc::{vec, vec::Vec, sync::Arc};
@ -14,6 +15,7 @@ pub enum Message {
LoadRequest(Arc<Vec<u8>>),
LoadCompleted,
LoadFailed,
StartRequest,
}
static CHANNEL_0TO1: Mutex<Option<sync_channel::Receiver<Message>>> = Mutex::new(None);
@ -84,6 +86,8 @@ fn resolve(required: &[u8]) -> Option<u32> {
api!(rtio_input_timestamp = rtio::input_timestamp),
api!(rtio_input_data = rtio::input_data),
api!(rtio_input_timestamped_data = rtio::input_timestamped_data),
api!(__artiq_personality = 0), // HACK
];
api.iter()
.find(|&&(exported, _)| exported.as_bytes() == required)
@ -108,11 +112,19 @@ pub fn main_core1() {
let core1_rx = core1_rx.unwrap();
let mut image = vec![0; 1024*1024];
let mut current_modinit: Option<u32> = None;
for message in core1_rx {
match *message {
Message::LoadRequest(data) => {
match dyld::Library::load(&data, &mut image, &resolve) {
Ok(library) => {
let __bss_start = library.lookup(b"__bss_start").unwrap();
let _end = library.lookup(b"_end").unwrap();
let __modinit__ = library.lookup(b"__modinit__").unwrap();
unsafe {
ptr::write_bytes(__bss_start as *mut u8, 0, (_end - __bss_start) as usize);
}
current_modinit = Some(__modinit__);
core1_tx.send(Message::LoadCompleted)
},
Err(error) => {
@ -121,6 +133,15 @@ pub fn main_core1() {
}
}
},
Message::StartRequest => {
debug!("starting");
if let Some(__modinit__) = current_modinit {
unsafe {
(mem::transmute::<u32, fn()>(__modinit__))();
}
}
debug!("stopping");
}
_ => error!("Core1 received unexpected message: {:?}", message),
}
}