Make PPE mapping architecture-specific

xtoskrnl/mm/amd64/pte.cc

@@ -139,6 +139,53 @@ MM::Pte::MapP5E(PVOID StartAddress,
     }
 }
 
+/**
+ * Maps a range of virtual addresses at the PPE (Page Directory Pointer Entry) level.
+ *
+ * @param StartAddress
+ *        The beginning of the virtual address range to map.
+ *
+ * @param EndAddress
+ *        The end of the virtual address range to map.
+ *
+ * @param TemplatePpe
+ *        A template PPE to use for creating new entries.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+VOID
+MM::Pte::MapPPE(PVOID StartAddress,
+                PVOID EndAddress,
+                PMMPPE TemplatePpe)
+{
+    PMMPPE EndSpace, PointerPpe;
+
+    /* Get PPE addresses */
+    PointerPpe = MM::Paging::GetPpeAddress(StartAddress);
+    EndSpace = MM::Paging::GetPpeAddress(EndAddress);
+
+    /* Iterate over all PPEs */
+    while(PointerPpe <= EndSpace)
+    {
+        /* Check if PPE is already mapped */
+        if(!MM::Paging::PteValid(PointerPpe))
+        {
+            /* Map PPE */
+            MM::Paging::SetPte(TemplatePpe, MM::Pfn::AllocateBootstrapPages(1), 0);
+            *PointerPpe = *TemplatePpe;
+
+            /* Clear the page table */
+            RtlZeroMemory(MM::Paging::GetPteVirtualAddress(PointerPpe), MM_PAGE_SIZE);
+        }
+
+        /* Get next table entry */
+        PointerPpe = MM::Paging::GetNextPte(PointerPpe);
+    }
+}
+
 /**
  * Maps a range of virtual addresses at the PXE (PML4) level.
  *

xtoskrnl/mm/i686/pte.cc

@@ -73,3 +73,29 @@ MM::Pte::InitializePageTable(VOID)
 {
     UNIMPLEMENTED;
 }
+
+/*
+ * Maps a range of virtual addresses at the PPE (Page Directory Pointer Entry) level.
+ *
+ * @param StartAddress
+ *        The beginning of the virtual address range to map.
+ *
+ * @param EndAddress
+ *        The end of the virtual address range to map.
+ *
+ * @param TemplatePpe
+ *        A template PPE to use for creating new entries.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+VOID
+MM::Pte::MapPPE(PVOID StartAddress,
+                PVOID EndAddress,
+                PMMPPE TemplatePpe)
+{
+    /* Just a stub on i686 platform */
+    return;
+}

xtoskrnl/mm/pte.cc

@@ -71,53 +71,6 @@ MM::Pte::MapPDE(PVOID StartAddress,
     }
 }
 
-/**
- * Maps a range of virtual addresses at the PPE (Page Directory Pointer Entry) level.
- *
- * @param StartAddress
- *        The beginning of the virtual address range to map.
- *
- * @param EndAddress
- *        The end of the virtual address range to map.
- *
- * @param TemplatePpe
- *        A template PPE to use for creating new entries.
- *
- * @return This routine does not return any value.
- *
- * @since XT 1.0
- */
-XTAPI
-VOID
-MM::Pte::MapPPE(PVOID StartAddress,
-                PVOID EndAddress,
-                PMMPPE TemplatePpe)
-{
-    PMMPPE EndSpace, PointerPpe;
-
-    /* Get PPE addresses */
-    PointerPpe = MM::Paging::GetPpeAddress(StartAddress);
-    EndSpace = MM::Paging::GetPpeAddress(EndAddress);
-
-    /* Iterate over all PPEs */
-    while(PointerPpe <= EndSpace)
-    {
-        /* Check if PPE is already mapped */
-        if(!MM::Paging::PteValid(PointerPpe))
-        {
-            /* Map PPE */
-            MM::Paging::SetPte(TemplatePpe, MM::Pfn::AllocateBootstrapPages(1), 0);
-            *PointerPpe = *TemplatePpe;
-
-            /* Clear the page table */
-            RtlZeroMemory(MM::Paging::GetPteVirtualAddress(PointerPpe), MM_PAGE_SIZE);
-        }
-
-        /* Get next table entry */
-        PointerPpe = MM::Paging::GetNextPte(PointerPpe);
-    }
-}
-
 /**
  * Maps a range of virtual addresses at the PTE (Page Table Entry) level.
  *