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Simple, unsafe context switch

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This commit is contained in:
Jeremy Soller 2016-08-28 18:38:53 -06:00
parent 6715d5c534
commit 6e3f59ba8e
5 changed files with 53 additions and 7 deletions
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18
kernel/lib.rs
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@ -134,8 +134,24 @@ pub extern fn kmain() {
print!("{}", format!("BSP: {:?}\n", syscall::getpid()));
if let Ok(context) = context::contexts_mut().spawn(context_test) {
let to_ptr = if let Ok(context_lock) = context::contexts_mut().spawn(context_test) {
print!("Spawned context\n");
let mut context = context_lock.write();
&mut context.arch as *mut arch::context::Context
} else {
0 as *mut arch::context::Context
};
let from_ptr = if let Some(context_lock) = context::contexts().current() {
let mut context = context_lock.write();
&mut context.arch as *mut arch::context::Context
} else {
0 as *mut arch::context::Context
};
if to_ptr as usize != 0 && from_ptr as usize != 0 {
print!("Switching\n");
unsafe { (&mut *from_ptr).switch_to(&mut *to_ptr); }
}
loop {