Reorganizaton of main (#199)

* reorganize main

* more names

* libc

src/sys/sys_timer.c

@@ -0,0 +1,50 @@
+#include "sys.h"
+
+TimerTask sTimerTasks[0x10];
+
+TimerTask* Timer_AllocateTask(void) {
+    s32 i;
+
+    for (i = 0; i < 0x10; i++) {
+        if (!sTimerTasks[i].active) {
+            return &sTimerTasks[i];
+        }
+    }
+    return NULL;
+}
+
+s32 Timer_CreateTask(u64 time, TimerAction action, s32* address, s32 value) {
+    TimerTask* task = Timer_AllocateTask();
+
+    if (task == NULL) {
+        return -1;
+    }
+    task->active = true;
+    task->action = action;
+    task->address = address;
+    task->value = value;
+    return osSetTimer(&task->timer, time, 0, &gTimerTaskMsgQueue, task);
+}
+
+void Timer_Increment(s32* address, s32 value) {
+    *address += value;
+}
+
+void Timer_SetValue(s32* address, s32 value) {
+    *address = value;
+}
+
+void Timer_CompleteTask(TimerTask* task) {
+    if (task->action != NULL) {
+        task->action(task->address, task->value);
+    }
+    task->active = false;
+}
+
+void Timer_Wait(u64 time) {
+    OSTimer timer;
+    OSMesg dummy;
+
+    osSetTimer(&timer, time, 0, &gTimerWaitMsgQueue, NULL);
+    osRecvMesg(&gTimerWaitMsgQueue, &dummy, OS_MESG_BLOCK);
+}