First proper commit.

src/libultra_boot_O1/osDestroyThread.c

@@ -0,0 +1,39 @@
+#include <global.h>
+
+void osDestroyThread(OSThread *thread)
+{
+    register s32 int_disabled;
+    
+    register OSThread *s1;
+    register OSThread *s2;
+
+    int_disabled = __osDisableInt();
+
+    if (thread == NULL)
+        thread = __osRunningThread;
+
+    else if (thread->state != OS_STATE_STOPPED)
+        __osDequeueThread(thread->queue, thread);
+
+    if (__osActiveQueue == thread)
+        __osActiveQueue = __osActiveQueue->tlnext;
+    else
+    {
+        s1 = __osActiveQueue;
+        while (s1->priority != -1)
+        {
+            s2 = s1->tlnext;
+            if (s2 == thread)
+            {
+                s1->tlnext = thread->tlnext;
+                break;
+            }
+            s1 = s2;
+        }
+    }
+
+    if (thread == __osRunningThread)
+        __osDispatchThread();
+
+    __osRestoreInt(int_disabled);
+}