Reorganize early debug printing; initialize kernel stacks when needed

xtoskrnl/ke/globals.c

@@ -0,0 +1,19 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtoskrnl/ke/globals.c
+ * DESCRIPTION:     XT kernel global variables
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <xtos.h>
+
+
+/* Kernel own boot stack */
+UCHAR KepKernelBootStackData[KERNEL_STACK_SIZE] = {0};
+
+/* Kernel own fault stack */
+UCHAR KepKernelFaultStackData[KERNEL_STACK_SIZE] = {0};
+
+/* Pointer to boot loader provided DbgPrint() routine */
+VOID (*LdrPrint)(IN PWCHAR Format, IN ...) = NULL;