Rename aster-frame to ostd

ostd/src/trap/mod.rs

@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: MPL-2.0
+
+//! Handles trap across kernel and user space.
+
+mod handler;
+mod irq;
+pub mod softirq;
+
+pub use handler::in_interrupt_context;
+pub use softirq::SoftIrqLine;
+pub use trapframe::TrapFrame;
+
+pub(crate) use self::handler::call_irq_callback_functions;
+pub use self::irq::{
+    disable_local, enable_local, DisabledLocalIrqGuard, IrqCallbackFunction, IrqLine,
+};
+
+pub(crate) fn init() {
+    unsafe {
+        trapframe::init();
+    }
+    softirq::init();
+}