1 files changed, 37 insertions, 0 deletions
diff --git a/arm7/lib/include/OS_system.h b/arm7/lib/include/OS_system.h
new file mode 100644
index 00000000..b6c81ab4
--- /dev/null
+++ b/arm7/lib/include/OS_system.h
@@ -0,0 +1,37 @@
+#ifndef POKEDIAMOND_ARM7_OS_SYSTEM_H
+#define POKEDIAMOND_ARM7_OS_SYSTEM_H
+
+#include "types.h"
+
+//todo consts.h
+#define HW_PSR_CPU_MODE_MASK       0x1f // CPU mode
+
+#define HW_PSR_DISABLE_FIQ         0x40 // Disable FIQ
+#define HW_PSR_DISABLE_IRQ         0x80 // Disable IRQ
+#define HW_PSR_DISABLE_IRQ_FIQ     0xc0 // Disable FIQ and IRQ
+
+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_INTRMODE_DISABLE_IRQ = HW_PSR_DISABLE_IRQ,
+    OS_INTRMODE_DISABLE_FIQ = HW_PSR_DISABLE_FIQ,
+    OS_INTRMODE_ENABLE = 0
+} OSIntrMode;
+
+OSIntrMode OS_EnableInterrupts(void);
+OSIntrMode OS_DisableInterrupts(void);
+OSIntrMode OS_RestoreInterrupts(register OSIntrMode state);
+OSIntrMode OS_DisableInterrupts_IrqAndFiq(void);
+OSIntrMode OS_RestoreInterrupts_IrqAndFiq(register OSIntrMode state);
+OSProcMode OS_GetProcMode(void);
+void OS_SpinWait(u32 cycle);
+
+#endif //POKEDIAMOND_ARM7_OS_SYSTEM_H