From c0367074ac143c8952c7fdd7150b470ec9ad5739 Mon Sep 17 00:00:00 2001
From: Philipp Oppermann <dev@phil-opp.com>
Date: Mon, 17 Jun 2019 17:49:06 +0200
Subject: [PATCH] Create an allocator module with a dummy allocator

---
 src/allocator.rs | 14 ++++++++++++++
 src/lib.rs       |  1 +
 2 files changed, 15 insertions(+)
 create mode 100644 src/allocator.rs

diff --git a/src/allocator.rs b/src/allocator.rs
new file mode 100644
index 00000000..ac452c10
--- /dev/null
+++ b/src/allocator.rs
@@ -0,0 +1,14 @@
+use alloc::alloc::{GlobalAlloc, Layout};
+use core::ptr::null_mut;
+
+pub struct Dummy;
+
+unsafe impl GlobalAlloc for Dummy {
+    unsafe fn alloc(&self, _layout: Layout) -> *mut u8 {
+        null_mut()
+    }
+
+    unsafe fn dealloc(&self, _ptr: *mut u8, _layout: Layout) {
+        panic!("dealloc should be never called")
+    }
+}
\ No newline at end of file
diff --git a/src/lib.rs b/src/lib.rs
index d27b7b49..320a3ca4 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -9,6 +9,7 @@ extern crate alloc;
 
 use core::panic::PanicInfo;
 
+pub mod allocator;
 pub mod gdt;
 pub mod interrupts;
 pub mod memory;