Initial import.

Most sources are split off from suzumebachi project revision 2fc77d2 as is with some path changes. New build rules introduced.

1 files changed, 32 insertions, 0 deletions

diff --git a/os/time.h b/os/time.h
new file mode 100644
index 0000000..3533967
--- /dev/null
+++ b/os/time.h
@@ -0,0 +1,32 @@
+#ifndef TIME_H
+#define TIME_H
+
+#include "thread.h"
+
+struct STK_t {
+	volatile uint32_t CTRL;
+	volatile uint32_t LOAD;
+	volatile uint32_t VAL;
+	volatile uint32_t CALIB;
+};
+
+static STK_t& STK = *(STK_t*)0xe000e010;
+
+class Time {
+	private:
+		static volatile uint32_t systime;
+	
+	public:
+		inline static void tick() {
+			systime++;
+		}
+		
+		inline static void sleep(uint32_t ms) {
+			ms += systime;
+			while(systime < ms) {
+				Thread::yield();
+			}
+		}
+};
+
+#endif