1 files changed, 27 insertions, 0 deletions
diff --git a/arm9/lib/src/OS_protectionRegion.c b/arm9/lib/src/OS_protectionRegion.c
new file mode 100644
index 00000000..4d6cf974
--- /dev/null
+++ b/arm9/lib/src/OS_protectionRegion.c
@@ -0,0 +1,27 @@
+//
+// Created by red031000 on 2020-04-24.
+//
+
+#include "function_target.h"
+#include "OS_protectionRegion.h"
+
+ARM_FUNC asm void OS_SetDPermissionsForProtectionRegion(register u32 setMask, register u32 flags)
+{
+    mrc p15, 0x0, r2, c5, c0, 0x2
+    bic r2, r2, r0
+    orr r2, r2, r1
+    mcr p15, 0x0, r2, c5, c0, 0x2
+    bx lr
+}
+
+ARM_FUNC asm void OS_SetProtectionRegion1(u32 param)
+{
+    mcr p15, 0x0, r0, c6, c1, 0x0
+    bx lr
+}
+
+ARM_FUNC asm void OS_SetProtectionRegion2(u32 param)
+{
+    mcr p15, 0x0, r0, c6, c2, 0x0
+    bx lr
+}