Introduce architecture-specific page map routines

xtoskrnl/mm/amd64/globals.c

@@ -0,0 +1,26 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtoskrnl/mm/amd64/globals.c
+ * DESCRIPTION:     AMD64-specific global variables for the Memory Manager
+ * DEVELOPERS:      Aiken Harris <harraiken91@gmail.com>
+ */
+
+#include <xtos.h>
+
+
+/* Page mapping routines for systems using 4-level paging (PML4) */
+CMMPAGEMAP_ROUTINES MmpPml4Routines = {
+    // .ClearPte = MmpClearPte,
+    // .PteValid = MmpPml2PteValid,
+    // .SetPteCaching = MmpSetPml2PteCaching,
+    // .SetPte = MmpSetPml2Pte,
+};
+
+/* Page mapping routines for systems using 5-level paging (PML5) */
+CMMPAGEMAP_ROUTINES MmpPml5Routines = {
+    // .ClearPte = MmpClearPte,
+    // .PteValid = MmpPml3PteValid,
+    // .SetPteCaching = MmpSetPml3PteCaching,
+    // .SetPte = MmpSetPml3Pte,
+};

xtoskrnl/mm/globals.c

@@ -36,5 +36,8 @@ PVOID MmpHardwareHeapStart = MM_HARDWARE_HEAP_START_ADDRESS;
 /* Information about the current page map */
 MMPAGEMAP_INFO MmpPageMapInfo;
 
+/* Pointers to page map routines for the current paging mode */
+PCMMPAGEMAP_ROUTINES MmpPageMapRoutines;
+
 /* Number of used hardware allocation descriptors */
 ULONG MmpUsedHardwareAllocationDescriptors = 0;

xtoskrnl/mm/i686/globals.c

@@ -0,0 +1,26 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtoskrnl/mm/i686/globals.c
+ * DESCRIPTION:     i686-specific global variables for the Memory Manager
+ * DEVELOPERS:      Aiken Harris <harraiken91@gmail.com>
+ */
+
+#include <xtos.h>
+
+
+/* Page mapping routines for systems using 2-level paging (PML2) */
+CMMPAGEMAP_ROUTINES MmpPml2Routines = {
+    .ClearPte = MmpClearPte,
+    .PteValid = MmpPml2PteValid,
+    .SetPteCaching = MmpSetPml2PteCaching,
+    .SetPte = MmpSetPml2Pte,
+};
+
+/* Page mapping routines for systems using 3-level paging (PML3) */
+CMMPAGEMAP_ROUTINES MmpPml3Routines = {
+    .ClearPte = MmpClearPte,
+    .PteValid = MmpPml3PteValid,
+    .SetPteCaching = MmpSetPml3PteCaching,
+    .SetPte = MmpSetPml3Pte,
+};