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implement attribute writeback

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This commit is contained in:
Sebastien Bourdeauducq 2020-06-10 17:01:17 +08:00
parent bc81fa2e48
commit 81b8fc8916
1 changed files with 44 additions and 0 deletions
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44
src/runtime/src/kernel.rs
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@ -81,6 +81,45 @@ extern fn rpc_send_async(service: u32, tag: &CSlice<u8>, data: *const *const ())
rpc_send_common(true, service, tag, data);
}
unsafe fn attribute_writeback(typeinfo: *const ()) {
struct Attr {
offset: usize,
tag: CSlice<'static, u8>,
name: CSlice<'static, u8>
}
struct Type {
attributes: *const *const Attr,
objects: *const *const ()
}
let mut tys = typeinfo as *const *const Type;
while !(*tys).is_null() {
let ty = *tys;
tys = tys.offset(1);
let mut objects = (*ty).objects;
while !(*objects).is_null() {
let object = *objects;
objects = objects.offset(1);
let mut attributes = (*ty).attributes;
while !(*attributes).is_null() {
let attribute = *attributes;
attributes = attributes.offset(1);
if (*attribute).tag.len() > 0 {
rpc_send_async(0, &(*attribute).tag, [
&object as *const _ as *const (),
&(*attribute).name as *const _ as *const (),
(object as usize + (*attribute).offset) as *const ()
].as_ptr());
}
}
}
}
}
extern fn rpc_recv(slot: *mut ()) -> usize {
let core1_rx: &mut sync_channel::Receiver<Message> = unsafe { mem::transmute(KERNEL_CHANNEL_0TO1) };
let core1_tx: &mut sync_channel::Sender<Message> = unsafe { mem::transmute(KERNEL_CHANNEL_1TO0) };
@ -174,6 +213,7 @@ pub fn main_core1() {
let mut core1_rx = core1_rx.unwrap();
let mut current_modinit: Option<u32> = None;
let mut current_typeinfo: Option<u32> = None;
loop {
let message = core1_rx.recv();
match *message {
@ -190,6 +230,7 @@ pub fn main_core1() {
}
let __modinit__ = library.lookup(b"__modinit__").unwrap();
current_modinit = Some(__modinit__);
current_typeinfo = library.lookup(b"typeinfo");
debug!("kernel loaded");
core1_tx.send(Message::LoadCompleted);
},
@ -206,6 +247,9 @@ pub fn main_core1() {
KERNEL_CHANNEL_0TO1 = mem::transmute(&mut core1_rx);
KERNEL_CHANNEL_1TO0 = mem::transmute(&mut core1_tx);
(mem::transmute::<u32, fn()>(__modinit__))();
if let Some(typeinfo) = current_typeinfo {
attribute_writeback(typeinfo as *const ());
}
KERNEL_CHANNEL_0TO1 = ptr::null_mut();
KERNEL_CHANNEL_1TO0 = ptr::null_mut();
}