1 files changed, 69 insertions, 0 deletions
diff --git a/include/nitro/os.h b/include/nitro/os.h
new file mode 100644
index 00000000..84425631
--- /dev/null
+++ b/include/nitro/os.h
@@ -0,0 +1,69 @@
+//
+// Created by mart on 4/12/20.
+//
+
+#ifndef POKEDIAMOND_OS_H
+#define POKEDIAMOND_OS_H
+
+#include "types.h"
+#include "consts.h"
+
+typedef enum {
+    OS_PROCMODE_USER=16,
+    OS_PROCMODE_FIQ=17,
+    OS_PROCMODE_IRQ=18,
+    OS_PROCMODE_SVC=19,
+    OS_PROCMODE_ABORT=23,
+    OS_PROCMODE_UNDEF=27,
+    OS_PROCMODE_SYS=31
+} OSProcMode;
+
+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 enum {
+    OS_INTRMODE_IRQ_DISABLE = HW_PSR_IRQ_DISABLE,
+    OS_INTRMODE_IRQ_ENABLE = 0
+} OSIntrMode_Irq;
+
+typedef enum {
+    OS_INTRMODE_FIQ_DISABLE = HW_PSR_FIQ_DISABLE,
+    OS_INTRMODE_FIQ_ENABLE = 0
+} OSIntrMode_Fiq;
+
+typedef union {
+    OSIntrMode_Fiq mode_fiq;
+    OSIntrMode_Irq mode_irq;
+} OSIntrMode;
+
+typedef struct {
+    void   *lo[OS_ARENA_MAX];
+    void   *hi[OS_ARENA_MAX];
+    u16     initialized;
+    u8      padding[2];
+} OSArenaInfo;
+
+OSProcMode OS_GetProcMode();
+OSIntrMode OS_DisableInterrupts();
+OSIntrMode OS_RestoreInterrupts(register OSIntrMode state);
+
+void* OS_AllocFromArenaLo(OSArenaId id, u32 size, u32 align);
+void* OS_AllocFromArenaHi(OSArenaId id, u32 size, u32 align);
+
+void OS_SetArenaHi(OSArenaId id, void *newHi);
+void OS_SetArenaLo(OSArenaId id, void *newLo);
+
+void* OS_GetArenaHi(OSArenaId id);
+void* OS_GetArenaLo(OSArenaId id);
+
+#endif //POKEDIAMOND_OS_H