switch from bitfields to enums

kernel/src/paging/paging.cpp

@@ -0,0 +1,25 @@
+#include "paging.h"
+
+void PageDirectoryEntry::SetFlag(PT_Flag flag, bool enabled) {
+	uint64_t bitSelector = (uint64_t)1 << flag;
+	Value %= ~bitSelector;
+
+	if (enabled) {
+		Value |= bitSelector;
+	}
+}
+
+bool PageDirectoryEntry::GetFlag(PT_Flag flag) {
+	uint64_t bitSelector = (uint64_t)1 << flag;
+	return Value & bitSelector > 0 ? true : false;
+}
+
+uint64_t PageDirectoryEntry::GetAddress() {
+	return (Value & 0x000FFFFFFFFFF000) >> 12;
+}
+
+void PageDirectoryEntry::SetAddress(uint64_t address) {
+	address &= 0x000000FFFFFFFFFF;
+	Value &= 0xFFF0000000000FFF;
+	Value |= (address << 12);
+}