Kernel: Fix all broken locks from new mutexes

kernel/icxxabi.cpp

@@ -1,6 +1,5 @@
-#include <kernel/LockGuard.h>
+#include <BAN/Atomic.h>
 #include <kernel/Panic.h>
-#include <kernel/SpinLock.h>
 
 #define ATEXIT_MAX_FUNCS 128
 
@@ -115,22 +114,18 @@ void __cxa_finalize(void *f)
 
 namespace __cxxabiv1
 {
-	/* guard variables */
-	static Kernel::SpinLock s_spin_lock;
-
-	/* The ABI requires a 64-bit type.  */
-	__extension__ typedef int __guard __attribute__((mode(__DI__)));
+	using __guard = uint64_t;
 
 	int __cxa_guard_acquire (__guard* g)
 	{
-		Kernel::LockGuard lock_guard(s_spin_lock);
-		return !*(int*)g;
+		auto& atomic = *reinterpret_cast<BAN::Atomic<__guard>*>(g);
+		return atomic == 0;
 	}
 
 	void __cxa_guard_release (__guard* g)
 	{
-		Kernel::LockGuard lock_guard(s_spin_lock);
-		*(int*)g = 1;
+		auto& atomic = *reinterpret_cast<BAN::Atomic<__guard>*>(g);
+		atomic = 1;
 	}
 
 	void __cxa_guard_abort (__guard*)