Changed a lot of files. Summary: profiler support; "SafeFunction"; UnlockDeadLock kernel config; Code optimization & more

Profiling/gcov.cpp

@@ -0,0 +1,67 @@
+#include <types.h>
+#include <printf.h>
+#include <uart.hpp>
+
+#include "../kernel.h"
+
+using namespace UniversalAsynchronousReceiverTransmitter;
+
+#if BITS_PER_LONG >= 64
+typedef long gcov_type;
+#else
+typedef long long gcov_type;
+#endif
+
+struct gcov_fn_info
+{
+    unsigned int ident;
+    unsigned int checksum;
+    unsigned int n_ctrs[0];
+};
+
+struct gcov_ctr_info
+{
+    unsigned int num;
+    gcov_type *values;
+    void (*merge)(gcov_type *, unsigned int);
+};
+
+struct gcov_info
+{
+    unsigned int version;
+    struct gcov_info *next;
+    unsigned int stamp;
+    const char *filename;
+    unsigned int n_functions;
+    const struct gcov_fn_info *functions;
+    unsigned int ctr_mask;
+    struct gcov_ctr_info counts[0];
+};
+
+static inline SafeFunction __no_instrument_function void gcov_uart_wrapper(char c, void *unused)
+{
+    UART(COM2).Write(c);
+    (void)unused;
+}
+
+// TODO: Implement
+
+EXTERNC SafeFunction __no_instrument_function void __gcov_init(gcov_info *p __unused)
+{
+}
+
+EXTERNC SafeFunction __no_instrument_function void __gcov_exit(void)
+{
+}
+
+EXTERNC SafeFunction __no_instrument_function void __gcov_flush(void)
+{
+}
+
+EXTERNC SafeFunction __no_instrument_function void __gcov_merge_add(gcov_type *counters, unsigned int n_counters)
+{
+}
+
+EXTERNC SafeFunction __no_instrument_function void __gcov_merge_single(gcov_type *counters, unsigned int n_counters)
+{
+}