From 56e3de3c6298e29608afe2fa45aa3aae789b5bf7 Mon Sep 17 00:00:00 2001
From: Corwin <corwin@kuiper.dev>
Date: Sun, 22 Sep 2024 16:19:00 +0100
Subject: [PATCH] add SyncUnsafeCell implementation

---
 agb/src/lib.rs  |  1 +
 agb/src/util.rs | 16 ++++++++++++++++
 2 files changed, 17 insertions(+)
 create mode 100644 agb/src/util.rs

diff --git a/agb/src/lib.rs b/agb/src/lib.rs
index 9c66f36d..3b4af52f 100644
--- a/agb/src/lib.rs
+++ b/agb/src/lib.rs
@@ -190,6 +190,7 @@ mod sync;
 pub mod syscall;
 /// Interactions with the internal timers
 pub mod timer;
+pub(crate) mod util;
 
 mod no_game;
 
diff --git a/agb/src/util.rs b/agb/src/util.rs
new file mode 100644
index 00000000..657031c8
--- /dev/null
+++ b/agb/src/util.rs
@@ -0,0 +1,16 @@
+use core::cell::UnsafeCell;
+
+pub struct SyncUnsafeCell<T>(UnsafeCell<T>);
+
+unsafe impl<T> Sync for SyncUnsafeCell<T> {}
+unsafe impl<T> Send for SyncUnsafeCell<T> {}
+
+impl<T> SyncUnsafeCell<T> {
+    pub const fn new(t: T) -> Self {
+        Self(UnsafeCell::new(t))
+    }
+
+    pub unsafe fn get(&self) -> *mut T {
+        self.0.get()
+    }
+}