LibC: Run constructors on process startup.

Cooperate with the compiler to generate and execute the _init_array list
of constructor functions on userspace program statup. This took two days
to get working, my goodness. :^)

AK/StdLibExtras.cpp

@@ -52,6 +52,8 @@ void* mmx_memcpy(void* dest, const void* src, size_t len)
     return dest;
 }
 
+#ifdef KERNEL
+
 static inline uint32_t divq(uint64_t n, uint32_t d)
 {
     uint32_t n1 = n >> 32;
@@ -144,5 +146,6 @@ uint64_t __udivmoddi4(uint64_t n, uint64_t d, uint64_t* r)
 
     return q;
 }
+#endif
 
 }

AK/kmalloc.cpp

@@ -46,36 +46,6 @@ void* kmalloc_eternal(size_t size)
 
 }
 
-void* operator new(size_t size)
-{
-    return kmalloc(size);
-}
-
-void* operator new[](size_t size)
-{
-    return kmalloc(size);
-}
-
-void operator delete(void* ptr)
-{
-    return kfree(ptr);
-}
-
-void operator delete[](void* ptr)
-{
-    return kfree(ptr);
-}
-
-void operator delete(void* ptr, size_t)
-{
-    return kfree(ptr);
-}
-
-void operator delete[](void* ptr, size_t)
-{
-    return kfree(ptr);
-}
-
 #else
 
 extern "C" {

AK/kmalloc.h

@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef KERNEL
+#include <new>
+#endif
+
 #if defined(SERENITY) && defined(KERNEL)
 #define AK_MAKE_ETERNAL \
 public: \
@@ -23,6 +27,31 @@ void kfree(void* ptr);
 
 }
 
+#ifdef KERNEL
 inline void* operator new(size_t, void* p) { return p; }
 inline void* operator new[](size_t, void* p) { return p; }
+#else
+
+inline void* operator new(size_t size)
+{
+    return kmalloc(size);
+}
+
+inline void operator delete(void* ptr)
+{
+    return kfree(ptr);
+}
+
+inline void* operator new[](size_t size)
+{
+    return kmalloc(size);
+}
+
+inline void operator delete[](void* ptr)
+{
+    return kfree(ptr);
+}
+
+#endif
+
 #endif