From a9d39fdb56526c4146d92e6af68cc175ec4da7c2 Mon Sep 17 00:00:00 2001
From: Dennis Kobert <dennis@kobert.dev>
Date: Thu, 7 Nov 2019 18:32:47 +0100
Subject: Add interupt descriptor table

---
 kernel/src/interrupts/exceptions.rs |  7 +++++++
 kernel/src/interrupts/mod.rs        |  2 ++
 kernel/src/interrupts/table.rs      | 16 ++++++++++++++++
 3 files changed, 25 insertions(+)
 create mode 100644 kernel/src/interrupts/exceptions.rs
 create mode 100644 kernel/src/interrupts/mod.rs
 create mode 100644 kernel/src/interrupts/table.rs

(limited to 'kernel/src/interrupts')

diff --git a/kernel/src/interrupts/exceptions.rs b/kernel/src/interrupts/exceptions.rs
new file mode 100644
index 0000000..5ec7588
--- /dev/null
+++ b/kernel/src/interrupts/exceptions.rs
@@ -0,0 +1,7 @@
+use crate::io::vga_text::OStream;
+use x86_64::structures::idt::InterruptStackFrame;
+
+pub extern "x86-interrupt" fn breakpoint_handler(stack_frame: &mut InterruptStackFrame) {
+    let mut stdout = OStream::new();
+    stdout.print(b"EXCEPTION: BREAKPOINT\n");
+}
diff --git a/kernel/src/interrupts/mod.rs b/kernel/src/interrupts/mod.rs
new file mode 100644
index 0000000..ae21761
--- /dev/null
+++ b/kernel/src/interrupts/mod.rs
@@ -0,0 +1,2 @@
+mod exceptions;
+pub mod table;
diff --git a/kernel/src/interrupts/table.rs b/kernel/src/interrupts/table.rs
new file mode 100644
index 0000000..47d6ead
--- /dev/null
+++ b/kernel/src/interrupts/table.rs
@@ -0,0 +1,16 @@
+use crate::io::vga_text::OStream;
+use lazy_static::lazy_static;
+use x86_64::structures::idt::InterruptDescriptorTable;
+
+lazy_static! {
+    static ref IDT: InterruptDescriptorTable = {
+        let mut idt = InterruptDescriptorTable::new();
+        idt.breakpoint
+            .set_handler_fn(super::exceptions::breakpoint_handler);
+        idt
+    };
+}
+
+pub fn init() {
+    IDT.load()
+}
-- 
cgit v1.2.3-54-g00ecf