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Implement many process syscalls.

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This commit is contained in:
Yifan Wu 2020-12-10 11:57:26 +08:00
parent 81bef97f09
commit 3642f9c56d
20 changed files with 383 additions and 88 deletions
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3
os/src/task/pid.rs
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@ -46,6 +46,7 @@ pub struct PidHandle(pub usize);
impl Drop for PidHandle {
fn drop(&mut self) {
//println!("drop pid {}", self.0);
PID_ALLOCATOR.lock().dealloc(self.0);
}
}
@ -82,7 +83,7 @@ impl KernelStack {
}
pub fn push_on_top<T>(&self, value: T) -> *mut T where
T: Sized, {
let (_, kernel_stack_top) = kernel_stack_position(self.pid);
let kernel_stack_top = self.get_top();
let ptr_mut = (kernel_stack_top - core::mem::size_of::<T>()) as *mut T;
unsafe { *ptr_mut = value; }
ptr_mut