* Added a level of indirection for the arch_vm_translation_map functions.

Introduced the interface X86PagingMethod which is used by those. ATM
  there's one implementing class, X86PagingMethod32Bit.
* Made X86PagingStructures a base class, with one derived class,
  X86PagingStructures32Bit.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37050 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/kernel/arch/x86/Jamfile

@@ -40,6 +40,8 @@ KernelMergeObject kernel_arch_x86.o :
 	x86_physical_page_mapper.cpp
 	x86_physical_page_mapper_large_memory.cpp
 	x86_syscalls.cpp
+	X86PagingMethod.cpp
+	X86PagingMethod32Bit.cpp
 
 	x86_apic.cpp
 	x86_hpet.cpp

src/system/kernel/arch/x86/X86PagingMethod.cpp

@@ -0,0 +1,12 @@
+/*
+ * Copyright 2010, Ingo Weinhold, [email protected].
+ * Distributed under the terms of the MIT License.
+ */
+
+
+#include "X86PagingMethod.h"
+
+
+X86PagingMethod::~X86PagingMethod()
+{
+}

src/system/kernel/arch/x86/X86PagingMethod.h

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2010, Ingo Weinhold, [email protected].
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef KERNEL_ARCH_X86_X86_PAGING_METHOD_H
+#define KERNEL_ARCH_X86_X86_PAGING_METHOD_H
+
+
+#include <SupportDefs.h>
+
+
+struct kernel_args;
+struct VMPhysicalPageMapper;
+struct VMTranslationMap;
+
+
+class X86PagingMethod {
+public:
+	virtual						~X86PagingMethod();
+
+	virtual	status_t			Init(kernel_args* args,
+									VMPhysicalPageMapper** _physicalPageMapper)
+										= 0;
+	virtual	status_t			InitPostArea(kernel_args* args) = 0;
+
+	virtual	status_t			CreateTranslationMap(bool kernel,
+									VMTranslationMap** _map) = 0;
+
+	virtual	status_t			MapEarly(kernel_args* args,
+									addr_t virtualAddress,
+									phys_addr_t physicalAddress,
+									uint8 attributes,
+									phys_addr_t (*get_free_page)(kernel_args*))
+										= 0;
+
+	virtual	bool				IsKernelPageAccessible(addr_t virtualAddress,
+									uint32 protection) = 0;
+};
+
+
+#endif	// KERNEL_ARCH_X86_X86_PAGING_METHOD_H

src/system/kernel/arch/x86/X86PagingMethod32Bit.h

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2010, Ingo Weinhold, [email protected].
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef KERNEL_ARCH_X86_X86_PAGING_METHOD_32_BIT_H
+#define KERNEL_ARCH_X86_X86_PAGING_METHOD_32_BIT_H
+
+
+#include "x86_paging.h"
+#include "X86PagingMethod.h"
+
+
+struct X86PagingStructures32Bit : X86PagingStructures {
+								X86PagingStructures32Bit();
+	virtual						~X86PagingStructures32Bit();
+
+	virtual	void				Delete();
+};
+
+
+class X86PagingMethod32Bit : public X86PagingMethod {
+public:
+								X86PagingMethod32Bit();
+	virtual						~X86PagingMethod32Bit();
+
+	static	X86PagingMethod*	Create();
+
+	virtual	status_t			Init(kernel_args* args,
+									VMPhysicalPageMapper** _physicalPageMapper);
+	virtual	status_t			InitPostArea(kernel_args* args);
+
+	virtual	status_t			CreateTranslationMap(bool kernel,
+									VMTranslationMap** _map);
+
+	virtual	status_t			MapEarly(kernel_args* args,
+									addr_t virtualAddress,
+									phys_addr_t physicalAddress,
+									uint8 attributes,
+									phys_addr_t (*get_free_page)(kernel_args*));
+
+	virtual	bool				IsKernelPageAccessible(addr_t virtualAddress,
+									uint32 protection);
+};
+
+
+#endif	// KERNEL_ARCH_X86_X86_PAGING_METHOD_32_BIT_H

src/system/kernel/arch/x86/x86_paging.h

@@ -74,7 +74,7 @@ struct X86PagingStructures : DeferredDeletable {
 	inline	void				AddReference();
 	inline	void				RemoveReference();
 
-			void				Delete();
+	virtual	void				Delete() = 0;
 };