3 files changed, 65 insertions, 0 deletions
diff --git a/include/nitro/OS_arena_shared.h b/include/nitro/OS_arena_shared.h
new file mode 100644
index 00000000..df6d526a
--- /dev/null
+++ b/include/nitro/OS_arena_shared.h
@@ -0,0 +1,38 @@
+/*
+ * NOTE:
+ * This file is shared between ARM9 and ARM7
+ * DO NOT PUT PROC SPECIFIC CODE IN HERE
+ * Thank You!
+ */
+
+/*
+ * DO NOT INCLUDE THIS FILE DIRECTLY
+ * Include OS_arena.h from the specific proc's lib
+ */
+
+#ifndef POKEDIAMOND_OS_ARENA_SHARED_H
+#define POKEDIAMOND_OS_ARENA_SHARED_H
+
+#include "nitro/types.h"
+
+typedef enum {
+    OS_ARENA_MAIN = 0,
+    OS_ARENA_MAIN_SUBPRIV = 1,
+    OS_ARENA_MAINEX = 2,
+    OS_ARENA_ITCM = 3,
+    OS_ARENA_DTCM = 4,
+    OS_ARENA_SHARED = 5,
+    OS_ARENA_WRAM_MAIN = 6,
+    OS_ARENA_WRAM_SUB = 7,
+    OS_ARENA_WRAM_SUBPRIV = 8,
+    OS_ARENA_MAX = 9
+} OSArenaId;
+
+typedef struct {
+    void* lo[OS_ARENA_MAX];
+    void* hi[OS_ARENA_MAX];
+    u16 initialized;
+    u8 padding[2];
+} OSArenaInfo;
+
+#endif //POKEDIAMOND_OS_ARENA_SHARED_H
diff --git a/include/nitro/consts_shared.h b/include/nitro/consts_shared.h
index e515831e..a7fd9dcf 100644
--- a/include/nitro/consts_shared.h
+++ b/include/nitro/consts_shared.h
@@ -14,6 +14,7 @@
 #define POKEDIAMOND_CONSTS_SHARED_H
 
 #include "nitro/types.h"
+#include "nitro/mmap_shared.h"
 
 //Shared Consts
 
@@ -23,4 +24,6 @@
 #define HW_PSR_DISABLE_IRQ         0x80 // Disable IRQ
 #define HW_PSR_DISABLE_IRQ_FIQ     0xc0 // Disable FIQ and IRQ
 
+#define OSi_GetArenaInfo()         (*(OSArenaInfo*)HW_ARENA_INFO_BUF)
+
 #endif //POKEDIAMOND_CONSTS_SHARED_H
diff --git a/include/nitro/mmap_shared.h b/include/nitro/mmap_shared.h
new file mode 100644
index 00000000..ad97c912
--- /dev/null
+++ b/include/nitro/mmap_shared.h
@@ -0,0 +1,24 @@
+/*
+ * NOTE:
+ * This file is shared between ARM9 and ARM7
+ * DO NOT PUT PROC SPECIFIC CODE IN HERE
+ * Thank You!
+ */
+
+/*
+ * DO NOT INCLUDE THIS FILE DIRECTLY
+ * Include mmap.h from the specific proc's lib
+ */
+
+#ifndef POKEDIAMOND_MMAP_SHARED_H
+#define POKEDIAMOND_MMAP_SHARED_H
+
+#define HW_MAIN_MEM             0x02000000
+#define HW_MAIN_MEM_SIZE        0x00400000
+#define HW_MAIN_MEM_MAIN_SIZE   0x003E0000
+#define HW_MAIN_MEM_SHARED_SIZE 0x00001000
+
+#define HW_ARENA_INFO_BUF       (HW_MAIN_MEM + 0x007ffda0)
+#define HW_MAIN_MEM_MAIN_END    (HW_MAIN_MEM + HW_MAIN_MEM_MAIN_SIZE)
+
+#endif //POKEDIAMOND_MMAP_SHARED_H