From 840d91c62e30134d184a371e85e1b86ad36b6076 Mon Sep 17 00:00:00 2001
From: James Benton <james.benton2@gmail.com>
Date: Mon, 10 Apr 2017 23:17:19 +0100
Subject: [PATCH] coreinit: Add 32 bit atomic exports.

---
 include/coreinit/atomic.h | 59 +++++++++++++++++++++++++++++++++++++++
 rpl/coreinit/exports.h    | 11 ++++++++
 2 files changed, 70 insertions(+)
 create mode 100644 include/coreinit/atomic.h

diff --git a/include/coreinit/atomic.h b/include/coreinit/atomic.h
new file mode 100644
index 00000000..b6ff335d
--- /dev/null
+++ b/include/coreinit/atomic.h
@@ -0,0 +1,59 @@
+#pragma once
+#include <wut.h>
+
+/**
+ * \defgroup coreinit_atomic Atomic Operations
+ * \ingroup coreinit
+ *
+ * These functions are used for atomically operating on 32 bit values in memory.
+ * @{
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+BOOL
+OSCompareAndSwapAtomic(volatile uint32_t *ptr,
+                       uint32_t compare,
+                       uint32_t value);
+
+BOOL
+OSCompareAndSwapAtomicEx(volatile uint32_t *ptr,
+                         uint32_t compare,
+                         uint32_t value,
+                         uint32_t *old);
+
+uint32_t
+OSSwapAtomic(volatile uint32_t *ptr,
+             uint32_t value);
+
+int32_t
+OSAddAtomic(volatile int32_t *ptr,
+            int32_t value);
+
+uint32_t
+OSAndAtomic(volatile uint32_t *ptr,
+            uint32_t value);
+
+uint32_t
+OSOrAtomic(volatile uint32_t *ptr,
+           uint32_t value);
+
+uint32_t
+OSXorAtomic(volatile uint32_t *ptr,
+            uint32_t value);
+
+BOOL
+OSTestAndClearAtomic(volatile uint32_t *ptr,
+                     uint32_t bit);
+
+BOOL
+OSTestAndSetAtomic(volatile uint32_t *ptr,
+                   uint32_t bit);
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
diff --git a/rpl/coreinit/exports.h b/rpl/coreinit/exports.h
index c0280169..7924a075 100644
--- a/rpl/coreinit/exports.h
+++ b/rpl/coreinit/exports.h
@@ -12,6 +12,17 @@ EXPORT(OSSetAlarmTag);
 EXPORT(OSSetAlarmUserData);
 EXPORT(OSWaitAlarm);
 
+// coreinit/atomic.h
+EXPORT(OSCompareAndSwapAtomic);
+EXPORT(OSCompareAndSwapAtomicEx);
+EXPORT(OSSwapAtomic);
+EXPORT(OSAddAtomic);
+EXPORT(OSAndAtomic);
+EXPORT(OSOrAtomic);
+EXPORT(OSXorAtomic);
+EXPORT(OSTestAndClearAtomic);
+EXPORT(OSTestAndSetAtomic);
+
 // coreinit/atomic64.h
 EXPORT(OSGetAtomic64);
 EXPORT(OSSetAtomic64);