Added missing libsw library

external/libsdf/libsw/dbg.c

@@ -0,0 +1,36 @@
+#include <nx.h>
+
+#define FORCE(t) ( (t) | (1<<30))
+#define DBG_REQUEST_TYPE FORCE(0x1a2b3c4)
+
+#define WHAT_DBGBUF 1
+#define WHAT_MEMORY 2
+#define WHAT_STACK 3
+#define WHAT_CODE 4
+
+typedef struct {
+    int what;
+} dbg_request_t;
+
+void PrintMemfile();
+static dbg_request_t dbg_request;
+
+void
+jab_dbg_handler(int proc)
+{
+    csend(DBG_REQUEST_TYPE, (char *)&dbg_request, sizeof(dbg_request), proc,0);
+{
+
+void
+set_dbg_handler(void){
+    hrecv(DBG_REQUEST_TYPE, (char *)&dbg_request,
+	  sizeof(dbg_request), dbg_handler);
+}
+
+static void
+dbg_handler(long type, long count, long node, long pid)
+{
+    PrintMemfile();
+    set_dbg_handler();
+    return;
+}