IntelPageTable Class Reference

Intel second level page table implementation. More...

#include <IntelPageTable.h>

Public Member Functions
MemoryContext::Result	map (Address virt, Address phys, Memory::Access access)
	Map a virtual address to a physical address. More...
MemoryContext::Result	unmap (Address virt)
	Remove virtual address mapping. More...
MemoryContext::Result	translate (Address virt, Address *phys) const
	Translate virtual address to physical address. More...
MemoryContext::Result	access (Address virt, Memory::Access *access) const
	Get Access flags for a virtual address. More...

Private Member Functions
u32	flags (Memory::Access access) const
	Convert MemoryAccess to page table flags. More...

Private Attributes
u32	m_pages [1024]
	Array of page table entries. More...

Detailed Description

Intel second level page table implementation.

Definition at line 39 of file IntelPageTable.h.

Member Function Documentation

access()

MemoryContext::Result IntelPageTable::access	(	Address	virt,
		Memory::Access *	access
	)		const

Get Access flags for a virtual address.

Parameters

virt	Virtual address to get Access flags for.
access	MemoryAccess object pointer.

Returns

Result code.

Definition at line 66 of file IntelPageTable.cpp.

References entry, MemoryContext::InvalidAddress, m_pages, PAGE_PRESENT, PAGE_USER, PAGE_WRITE, Memory::Readable, MemoryContext::Success, TABENTRY, Memory::User, and Memory::Writable.

Referenced by IntelPageDirectory::access(), flags(), and map().

flags()

u32 IntelPageTable::flags ( Memory::Access  access ) const

private

Convert MemoryAccess to page table flags.

Parameters

access

Memory access flags to convert

Returns

Page table flags

Definition at line 81 of file IntelPageTable.cpp.

References access(), PAGE_USER, PAGE_WRITE, Memory::User, and Memory::Writable.

Referenced by map().

map()

MemoryContext::Result IntelPageTable::map	(	Address	virt,
		Address	phys,
		Memory::Access	access
	)

Map a virtual address to a physical address.

Parameters

virt	Virtual address.
phys	Physical address.
access	Memory access flags.

Returns

Result code

Definition at line 38 of file IntelPageTable.cpp.

References access(), MemoryContext::AlreadyExists, flags(), m_pages, PAGE_PRESENT, MemoryContext::Success, and TABENTRY.

Referenced by IntelPageDirectory::map().

translate()

MemoryContext::Result IntelPageTable::translate	(	Address	virt,
		Address *	phys
	)		const

Translate virtual address to physical address.

Parameters

virt	Virtual address to lookup
phys	On output contains the translated physical memory address

Returns

Result code

Definition at line 57 of file IntelPageTable.cpp.

References MemoryContext::InvalidAddress, m_pages, PAGE_PRESENT, PAGEMASK, MemoryContext::Success, and TABENTRY.

Referenced by IntelPageDirectory::releaseRange(), IntelPageDirectory::releaseSection(), and IntelPageDirectory::translate().

unmap()

MemoryContext::Result IntelPageTable::unmap

(

Address

virt

)

Remove virtual address mapping.

Parameters

virt	Virtual address.

Returns

Result code

Definition at line 51 of file IntelPageTable.cpp.

References m_pages, PAGE_NONE, MemoryContext::Success, and TABENTRY.

Referenced by IntelPageDirectory::releaseRange(), and IntelPageDirectory::unmap().

Field Documentation

m_pages

u32 IntelPageTable::m_pages[1024]

private

Array of page table entries.

Definition at line 99 of file IntelPageTable.h.

Referenced by access(), map(), translate(), and unmap().

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The documentation for this class was generated from the following files:

• lib/libarch/intel/IntelPageTable.h
• lib/libarch/intel/IntelPageTable.cpp