#include <VirtualAddressSpace.h>

Inheritance diagram for VirtualAddressSpace:

Collaboration diagram for VirtualAddressSpace:

Classes
class	Stack

Public Member Functions
virtual void *	expandHeap (ssize_t incr, size_t flags)

virtual bool	isAddressValid (void *virtualAddress)=0

virtual bool	isMapped (void *virtualAddress)=0

virtual bool	map (physical_uintptr_t physicalAddress, void *virtualAddress, size_t flags)=0

virtual bool	mapHuge (physical_uintptr_t physAddress, void *virtualAddress, size_t count, size_t flags)

virtual void	getMapping (void *virtualAddress, physical_uintptr_t &physicalAddress, size_t &flags)=0

virtual void	setFlags (void *virtualAddress, size_t newFlags)=0

virtual void	unmap (void *virtualAddress)=0

virtual Stack *	allocateStack ()=0

virtual Stack *	allocateStack (size_t stackSz)

virtual void	freeStack (Stack *pStack)=0

virtual VirtualAddressSpace *	clone (bool copyOnWrite=true)=0

virtual void	revertToKernelAddressSpace ()=0

virtual	~VirtualAddressSpace ()

void	setHeap (void heap, void heapEnd)

virtual bool	memIsInKernelHeap (void *pMem)=0

virtual bool	memIsInHeap (void *pMem)=0

virtual void *	getEndOfHeap ()=0

virtual uintptr_t	getKernelStart () const =0

virtual uintptr_t	getUserStart () const =0

virtual uintptr_t	getUserReservedStart () const =0

virtual uintptr_t	getDynamicLinkerAddress () const =0

virtual uintptr_t	getKernelHeapStart () const =0

virtual uintptr_t	getKernelHeapEnd () const =0

virtual uintptr_t	getKernelCacheStart () const =0

virtual uintptr_t	getKernelCacheEnd () const =0

virtual uintptr_t	getKernelEventBlockStart () const =0

virtual uintptr_t	getKernelModulesStart () const =0

virtual uintptr_t	getKernelModulesEnd () const =0

virtual uintptr_t	getDynamicStart () const

virtual uintptr_t	getDynamicEnd () const

virtual uintptr_t	getGlobalInfoBlock () const

Static Public Member Functions
static EXPORTED_PUBLIC VirtualAddressSpace &	getKernelAddressSpace ()

static VirtualAddressSpace *	create ()

Public Attributes
void *	m_Heap

void *	m_HeapEnd

Static Public Attributes
static const size_t	KernelMode = 0x01

static const size_t	Write = 0x02

static const size_t	Execute = 0x04

static const size_t	WriteThrough = 0x08

static const size_t	CacheDisable = 0x10

static const size_t	CopyOnWrite = 0x20

static const size_t	Swapped = 0x40

static const size_t	MemoryCoherent = 0x80

static const size_t	Guarded = 0x100

static const size_t	Shared = 0x200

static const size_t	WriteCombine = 0x400

static const size_t	Accessed = 0x800

static const size_t	Dirty = 0x1000

static const size_t	ClearDirty = 0x2000

static physical_uintptr_t	m_ZeroPage = 0

Protected Member Functions
	VirtualAddressSpace (void *Heap)

Private Member Functions
	VirtualAddressSpace ()

	VirtualAddressSpace (const VirtualAddressSpace &)

VirtualAddressSpace &	operator= (const VirtualAddressSpace &)

void	rollbackHeapExpansion (void *virtualAddress, size_t pageCount)

Friends
class	Debugger

Detailed Description

The VirtualAddressSpace encapsulates all the functionality of a virtual memory- management. This includes management of the mapping between physical and virtual memory, management of allocated physical memory pages and management of free/allocated virtual memory.

Note: If KERNEL_NEEDS_ADDRESS_SPACE_SWITCH is set defined to 1, you have to switch to the VirtualAddressSpace you want to change yourself before you call any of the following functions: expandHeap, isMapped, map, getMapping, setFlags, unmap

Definition at line 37 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Constructor & Destructor Documentation

virtual VirtualAddressSpace::~VirtualAddressSpace ( )

inlinevirtual

The destructor does nothing

Definition at line 171 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

VirtualAddressSpace::VirtualAddressSpace ( void * Heap )

inlineprotected

The constructor does nothing

Definition at line 286 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

References operator=(), rollbackHeapExpansion(), and VirtualAddressSpace().

VirtualAddressSpace::VirtualAddressSpace ( )

private

The default constructor

Referenced by VirtualAddressSpace().

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VirtualAddressSpace::VirtualAddressSpace ( const VirtualAddressSpace & )

private

The copy-constructor

Note: NOT implemented

Member Function Documentation

virtual Stack* VirtualAddressSpace::allocateStack ( )

pure virtual

Allocates a single stack for a thread. Will use the default kernel thread size.

Implemented in X86KernelVirtualAddressSpace, X64VirtualAddressSpace, MIPS32VirtualAddressSpace, HostedVirtualAddressSpace, ArmV7VirtualAddressSpace, X86VirtualAddressSpace, PPC32VirtualAddressSpace, and Arm926EVirtualAddressSpace.

Referenced by HostedVirtualAddressSpace::allocateStack(), X64VirtualAddressSpace::allocateStack(), allocateStack(), Thread::allocateStackAtLevel(), and PerProcessorScheduler::checkEventState().

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virtual Stack* VirtualAddressSpace::allocateStack ( size_t stackSz )

inlinevirtual

Allocates a single stack of the given size for a thread.

Reimplemented in X64VirtualAddressSpace, HostedVirtualAddressSpace, ArmV7VirtualAddressSpace, and X86VirtualAddressSpace.

Definition at line 145 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

References allocateStack(), clone(), create(), freeStack(), and revertToKernelAddressSpace().

virtual VirtualAddressSpace* VirtualAddressSpace::clone ( bool copyOnWrite = true )

pure virtual

Clone this VirtualAddressSpace. That means that we copy-on-write-map the application * image. *

Parameters

[in] copyOnWrite whether the new address space copies pages on write, or shares them with the parent address space.

Returns: pointer to the new VirtualAddressSpace

Implemented in X64VirtualAddressSpace, and HostedVirtualAddressSpace.

Referenced by allocateStack(), X86GdtManager::initialiseDoubleFaultTss(), and Process::Process().

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VirtualAddressSpace * VirtualAddressSpace::create ( )

static

Create a new VirtualAddressSpace. Only the kernel is mapped into that virtual address space

Returns: pointer to the new VirtualAddressSpace, 0 otherwise

Definition at line 35 of file arm_926e/VirtualAddressSpace.cc.

Referenced by allocateStack(), PPC32VirtualAddressSpace::clone(), HostedVirtualAddressSpace::clone(), X64VirtualAddressSpace::clone(), and X86VirtualAddressSpace::fromFlags().

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void * VirtualAddressSpace::expandHeap	(	ssize_t	incr,
		size_t	flags
	)

virtual

Expand the heap

Parameters

[in]	pageCount	the number of pages that should be allocated and mapped to the heap end
[in]	flags	flags that describe which accesses should be allowed on the page

Returns: pointer to the beginning of the newly allocated/mapped heap, 0 otherwise

Note: Should this be m_HeapEnd - getPageSize?

Definition at line 27 of file VirtualAddressSpace.cc.

References PhysicalMemoryManager::allocatePage(), CopyOnWrite, ERROR, FATAL, PhysicalMemoryManager::freePage(), getDynamicStart(), getKernelHeapStart(), getKernelStart(), getMapping(), PhysicalMemoryManager::getPageSize(), PhysicalMemoryManager::instance(), isMapped(), m_HeapEnd, m_ZeroPage, map(), PhysicalMemoryManager::pin(), unmap(), WARNING, and Write.

virtual void VirtualAddressSpace::freeStack ( Stack * pStack )

pure virtual

Frees a stack allocated with allocateStack.

Implemented in X64VirtualAddressSpace, and HostedVirtualAddressSpace.

Referenced by allocateStack(), and Thread::cleanStateLevel().

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virtual uintptr_t VirtualAddressSpace::getDynamicEnd ( ) const

inlinevirtual

Gets address of the end of the dynamic memory mapping area.

Reimplemented in X64VirtualAddressSpace, and HostedVirtualAddressSpace.

Definition at line 238 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by PosixSubsystem::invoke().

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virtual uintptr_t VirtualAddressSpace::getDynamicLinkerAddress ( ) const

pure virtual

Gets address of the dynamic linker in the address space.

Implemented in X64VirtualAddressSpace, ArmV7VirtualAddressSpace, X86VirtualAddressSpace, and HostedVirtualAddressSpace.

Referenced by setHeap().

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virtual uintptr_t VirtualAddressSpace::getDynamicStart ( ) const

inlinevirtual

Gets address of the start of the dynamic memory mapping area. This is an area in which memory mappings can be created for userspace applications. Systems that do not have room in the address space for this may return zero.

Reimplemented in X64VirtualAddressSpace, and HostedVirtualAddressSpace.

Definition at line 233 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by expandHeap(), Thread::getTlsBase(), PosixSubsystem::invoke(), and Thread::~Thread().

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virtual void* VirtualAddressSpace::getEndOfHeap ( )

pure virtual

Gets a pointer to the byte after the end of the heap.

Implemented in X64VirtualAddressSpace, HostedVirtualAddressSpace, ArmV7VirtualAddressSpace, and X86VirtualAddressSpace.

Referenced by X86VirtualAddressSpace::memIsInHeap(), HostedVirtualAddressSpace::memIsInHeap(), X64VirtualAddressSpace::memIsInHeap(), and setHeap().

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virtual uintptr_t VirtualAddressSpace::getGlobalInfoBlock ( ) const

inlinevirtual

Gets address of the global info block location.

Reimplemented in X64VirtualAddressSpace.

Definition at line 244 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by PosixSyscallManager::syscall().

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VirtualAddressSpace & VirtualAddressSpace::getKernelAddressSpace ( )

static

Get the kernel virtual address space

Returns: reference to the kernel virtual address space

Definition at line 30 of file arm_926e/VirtualAddressSpace.cc.

References Arm926EVirtualAddressSpace::m_KernelSpace.

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virtual uintptr_t VirtualAddressSpace::getKernelCacheEnd ( ) const

pure virtual

Gets address of the end of the kernel's cache region.

Implemented in X64VirtualAddressSpace, ArmV7VirtualAddressSpace, and HostedVirtualAddressSpace.

Referenced by CacheManager::executeRequest(), and setHeap().

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virtual uintptr_t VirtualAddressSpace::getKernelCacheStart ( ) const

pure virtual

Gets address of the start of the kernel's cache region.

Implemented in X64VirtualAddressSpace, ArmV7VirtualAddressSpace, and HostedVirtualAddressSpace.

Referenced by CacheManager::executeRequest(), and setHeap().

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virtual uintptr_t VirtualAddressSpace::getKernelEventBlockStart ( ) const

pure virtual

Gets address of the start of the kernel's event handling block.

Implemented in X64VirtualAddressSpace, ArmV7VirtualAddressSpace, and HostedVirtualAddressSpace.

Referenced by Event::getTrampoline(), and setHeap().

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virtual uintptr_t VirtualAddressSpace::getKernelHeapEnd ( ) const

pure virtual

Gets address of the end of the kernel's heap region.

Implemented in X64VirtualAddressSpace, ArmV7VirtualAddressSpace, X86VirtualAddressSpace, and HostedVirtualAddressSpace.

Referenced by setHeap().

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virtual uintptr_t VirtualAddressSpace::getKernelHeapStart ( ) const

pure virtual

Gets address of the start of the kernel's heap region.

Implemented in X64VirtualAddressSpace, ArmV7VirtualAddressSpace, X86VirtualAddressSpace, and HostedVirtualAddressSpace.

Referenced by expandHeap(), and setHeap().

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virtual uintptr_t VirtualAddressSpace::getKernelModulesEnd ( ) const

pure virtual

Gets address of the end of the kernel's module region.

Implemented in X64VirtualAddressSpace, ArmV7VirtualAddressSpace, and HostedVirtualAddressSpace.

Referenced by KernelElf::loadModule(), and setHeap().

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virtual uintptr_t VirtualAddressSpace::getKernelModulesStart ( ) const

pure virtual

Gets address of the start of the kernel's module region.

Implemented in X64VirtualAddressSpace, ArmV7VirtualAddressSpace, and HostedVirtualAddressSpace.

Referenced by KernelElf::loadModule(), and setHeap().

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virtual uintptr_t VirtualAddressSpace::getKernelStart ( ) const

pure virtual

Gets start address of the kernel in the address space.

Implemented in X64VirtualAddressSpace, ArmV7VirtualAddressSpace, X86VirtualAddressSpace, and HostedVirtualAddressSpace.

Referenced by PosixSubsystem::checkAddress(), expandHeap(), and setHeap().

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virtual void VirtualAddressSpace::getMapping	(	void *	virtualAddress,
		physical_uintptr_t &	physicalAddress,
		size_t &	flags
	)

pure virtual

Get the physical address and the flags associated with the specific virtual address.

Note: This function is only valid on memory that was mapped with VirtualAddressSpace::map() and that is still mapped or marked as swapped out.

Parameters

[in]	virtualAddress	the address in the virtual address space
[out]	flags	the flags
[out]	physicalAddress	the physical address

Implemented in ArmV7KernelVirtualAddressSpace, X86KernelVirtualAddressSpace, X64VirtualAddressSpace, MIPS32VirtualAddressSpace, HostedVirtualAddressSpace, ArmV7VirtualAddressSpace, X86VirtualAddressSpace, PPC32VirtualAddressSpace, and Arm926EVirtualAddressSpace.

Referenced by BusMasterIde::add(), Uhci::addTransferToTransaction(), Ohci::addTransferToTransaction(), PosixSubsystem::checkAddress(), PerProcessorScheduler::checkEventState(), MemoryMappedFile::compact(), Cache::evict(), MappingCommand::execute(), expandHeap(), HostedVirtualAddressSpace::freeStack(), X64VirtualAddressSpace::freeStack(), HostedVirtualAddressSpace::getMapping(), File::getPhysicalPage(), X86CommonPhysicalMemoryManager::initialisationDone(), Ipc::IpcMessage::IpcMessage(), AnonymousMemoryMap::remove(), MemoryMappedFile::remove(), rollbackHeapExpansion(), AnonymousMemoryMap::setPermissions(), MemoryMappedFile::setPermissions(), MemoryMappedFile::sync(), AnonymousMemoryMap::trap(), KernelElf::unloadModule(), HostedPhysicalMemoryManager::unmapRegion(), X86CommonPhysicalMemoryManager::unmapRegion(), and Thread::~Thread().

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virtual uintptr_t VirtualAddressSpace::getUserReservedStart ( ) const

pure virtual

Gets start address of reserved areas of the userpace address space.

Implemented in X64VirtualAddressSpace, ArmV7VirtualAddressSpace, X86VirtualAddressSpace, and HostedVirtualAddressSpace.

Referenced by PosixSubsystem::invoke(), and setHeap().

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virtual uintptr_t VirtualAddressSpace::getUserStart ( ) const

pure virtual

Gets start address of the region usable and cloneable for userspace.

Implemented in X64VirtualAddressSpace, ArmV7VirtualAddressSpace, X86VirtualAddressSpace, and HostedVirtualAddressSpace.

Referenced by PosixSubsystem::checkAddress(), PosixSubsystem::invoke(), and setHeap().

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virtual bool VirtualAddressSpace::isAddressValid ( void * virtualAddress )

pure virtual

Is a particular virtual address valid?

Parameters

[in] virtualAddress the virtual address to check

Returns: true, if the address is valid, false otherwise

Implemented in MIPS32VirtualAddressSpace, X64VirtualAddressSpace, HostedVirtualAddressSpace, ArmV7VirtualAddressSpace, X86VirtualAddressSpace, PPC32VirtualAddressSpace, and Arm926EVirtualAddressSpace.

virtual bool VirtualAddressSpace::isMapped ( void * virtualAddress )

pure virtual

Checks whether a mapping the the specific virtual address exists. Pages marked as swapped out are not considered mapped.

Note: This function must be valid on all the valid addresses within the virtual address space.

Parameters

[in] virtualAddress the virtual address

Returns: true, if a mapping exists, false otherwise

Implemented in ArmV7KernelVirtualAddressSpace, X86KernelVirtualAddressSpace, MIPS32VirtualAddressSpace, X64VirtualAddressSpace, HostedVirtualAddressSpace, ArmV7VirtualAddressSpace, X86VirtualAddressSpace, PPC32VirtualAddressSpace, and Arm926EVirtualAddressSpace.

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virtual bool VirtualAddressSpace::map	(	physical_uintptr_t	physicalAddress,
		void *	virtualAddress,
		size_t	flags
	)

pure virtual

Map a specific physical page (of size PhysicalMemoryManager::getPageSize()) at a specific location into the virtual address space.

Note: This function must also work on pages marked as swapped out.

Parameters

[in]	physicalAddress	the address of the physical page that should be mapped into the virtual address space.
[in]	virtualAddress	the virtual address at which the page apears within the virtual address space.
[in]	flags	flags that describe which accesses should be allowed on the page.

Returns: true, if successfull, false otherwise

Implemented in ArmV7KernelVirtualAddressSpace, X86KernelVirtualAddressSpace, MIPS32VirtualAddressSpace, X64VirtualAddressSpace, HostedVirtualAddressSpace, ArmV7VirtualAddressSpace, X86VirtualAddressSpace, PPC32VirtualAddressSpace, and Arm926EVirtualAddressSpace.

Referenced by ArmV7PhysicalMemoryManager::allocateRegion(), HostedPhysicalMemoryManager::allocateRegion(), PpcCommonPhysicalMemoryManager::allocateRegion(), X86CommonPhysicalMemoryManager::allocateRegion(), PerProcessorScheduler::checkEventState(), HostedVirtualAddressSpace::doAllocateStack(), X64VirtualAddressSpace::doAllocateStack(), Bios::executeInterrupt(), expandHeap(), Thread::getTlsBase(), MemoryMappedFile::invalidate(), Elf::loadModule(), HostedVirtualAddressSpace::map(), mapHuge(), DynamicLinker::trap(), AnonymousMemoryMap::trap(), MemoryMappedFile::trap(), and X86VirtualAddressSpace::X86VirtualAddressSpace().

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bool VirtualAddressSpace::mapHuge	(	physical_uintptr_t	physAddress,
		void *	virtualAddress,
		size_t	count,
		size_t	flags
	)

virtual

Map a region of memory using the largest possible frame size. Where possible the largest page size should be used, degrading into smaller page sizes as needed (e.g. 1 GB, 2 MB, 4K) to reduce the overhead of the mapping on the system. Default implementation calls map() in a loop.

Returns: true if successful, false otherwise.

Reimplemented in X64VirtualAddressSpace.

Definition at line 170 of file VirtualAddressSpace.cc.

References PhysicalMemoryManager::getPageSize(), and map().

Referenced by X86CommonPhysicalMemoryManager::initialise64(), and X64VirtualAddressSpace::mapHuge().

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virtual bool VirtualAddressSpace::memIsInHeap ( void * pMem )

pure virtual

Determines if a given point is within the virtual address space region dedicated to the kernel heap.

Implemented in X64VirtualAddressSpace, HostedVirtualAddressSpace, ArmV7VirtualAddressSpace, and X86VirtualAddressSpace.

Referenced by setHeap().

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virtual bool VirtualAddressSpace::memIsInKernelHeap ( void * pMem )

pure virtual

Determines whether a given address is within the kernel's heap region.

Implemented in X64VirtualAddressSpace.

Referenced by setHeap().

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VirtualAddressSpace& VirtualAddressSpace::operator= ( const VirtualAddressSpace & )

private

The copy-constructor

Note: Not implemented

Referenced by VirtualAddressSpace().

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virtual void VirtualAddressSpace::revertToKernelAddressSpace ( )

pure virtual

Undo a clone() - this happens when an application is Exec()'d - we destroy all mappings not in the kernel address space so the space is 'clean'.

Implemented in X64VirtualAddressSpace, ArmV7VirtualAddressSpace, HostedVirtualAddressSpace, X86VirtualAddressSpace, Arm926EVirtualAddressSpace, and PPC32VirtualAddressSpace.

Referenced by allocateStack(), PosixSubsystem::invoke(), Process::~Process(), and X64VirtualAddressSpace::~X64VirtualAddressSpace().

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void VirtualAddressSpace::rollbackHeapExpansion	(	void *	virtualAddress,
		size_t	pageCount
	)

private

Reverts the heap expansion, that was begun with expandHeap

Parameters

[in]	virtualAddress	current heap address
[in]	pageCount	number of mapped pages to unmap and free

Definition at line 148 of file VirtualAddressSpace.cc.

References PhysicalMemoryManager::freePage(), getMapping(), PhysicalMemoryManager::getPageSize(), PhysicalMemoryManager::instance(), physicalAddress(), and unmap().

Referenced by VirtualAddressSpace().

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virtual void VirtualAddressSpace::setFlags	(	void *	virtualAddress,
		size_t	newFlags
	)

pure virtual

Set the flags of the page at a specific virtual address.

Note: The page must have been mapped with VirtualAddressSpace::map() and the page must still be mapped or marked as swapped out.

Parameters

[in]	virtualAddress	the virtual address
[in]	newFlags	the flags

Implemented in ArmV7KernelVirtualAddressSpace, X86KernelVirtualAddressSpace, X64VirtualAddressSpace, MIPS32VirtualAddressSpace, HostedVirtualAddressSpace, ArmV7VirtualAddressSpace, X86VirtualAddressSpace, PPC32VirtualAddressSpace, and Arm926EVirtualAddressSpace.

Referenced by Elf::finaliseModule(), HostedVirtualAddressSpace::setFlags(), AnonymousMemoryMap::setPermissions(), and MemoryMappedFile::setPermissions().

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void VirtualAddressSpace::setHeap	(	void *	heap,
		void *	heapEnd
	)

inline

Setter for the internal Heap and HeapEnd variables

Definition at line 176 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

References getDynamicLinkerAddress(), getEndOfHeap(), getKernelCacheEnd(), getKernelCacheStart(), getKernelEventBlockStart(), getKernelHeapEnd(), getKernelHeapStart(), getKernelModulesEnd(), getKernelModulesStart(), getKernelStart(), getUserReservedStart(), getUserStart(), m_Heap, m_HeapEnd, memIsInHeap(), and memIsInKernelHeap().

virtual void VirtualAddressSpace::unmap ( void * virtualAddress )

pure virtual

Remove the page at the specific virtual address from the virtual address space.

Note: This function is only valid on memory that was mapped with VirtualAddressSpace::map() and that is still mapped or marked as swapped out.

Parameters

[in] virtualAddress the virtual address

Implemented in ArmV7KernelVirtualAddressSpace, X86KernelVirtualAddressSpace, X64VirtualAddressSpace, MIPS32VirtualAddressSpace, HostedVirtualAddressSpace, ArmV7VirtualAddressSpace, X86VirtualAddressSpace, PPC32VirtualAddressSpace, and Arm926EVirtualAddressSpace.

Referenced by MemoryMappedFile::compact(), Cache::evict(), expandHeap(), HostedVirtualAddressSpace::freeStack(), X64VirtualAddressSpace::freeStack(), X86CommonPhysicalMemoryManager::initialisationDone(), MemoryMappedFile::invalidate(), AnonymousMemoryMap::remove(), MemoryMappedFile::remove(), rollbackHeapExpansion(), AnonymousMemoryMap::trap(), MemoryMappedFile::trap(), KernelElf::unloadModule(), HostedVirtualAddressSpace::unmap(), PpcCommonPhysicalMemoryManager::unmapRegion(), HostedPhysicalMemoryManager::unmapRegion(), X86CommonPhysicalMemoryManager::unmapRegion(), X86VirtualAddressSpace::X86VirtualAddressSpace(), and Thread::~Thread().

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Friends And Related Function Documentation

friend class Debugger

friend

Debugger can access our private members for statistics reporting.

Definition at line 41 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Member Data Documentation

const size_t VirtualAddressSpace::Accessed = 0x800

static

Whether the page has been accessed.

Definition at line 71 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by X86VirtualAddressSpace::fromFlags(), X64VirtualAddressSpace::fromFlags(), X86VirtualAddressSpace::toFlags(), and X64VirtualAddressSpace::toFlags().

const size_t VirtualAddressSpace::CacheDisable = 0x10

static

If this flag is set, the cache is disabled.

Definition at line 56 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by HashedPageTable::addMapping(), X86VirtualAddressSpace::fromFlags(), X64VirtualAddressSpace::fromFlags(), HashedPageTable::initialise(), PPC32VirtualAddressSpace::initialRoster(), Device::Address::map(), MIPS32VirtualAddressSpace::map(), X86VirtualAddressSpace::toFlags(), and X64VirtualAddressSpace::toFlags().

const size_t VirtualAddressSpace::ClearDirty = 0x2000

static

Clear the dirty flag set by the above.

Definition at line 75 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by X86VirtualAddressSpace::toFlags(), and X64VirtualAddressSpace::toFlags().

const size_t VirtualAddressSpace::CopyOnWrite = 0x20

static

If this flag is set, the page is copy-on-write

Definition at line 58 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by HashedPageTable::addMapping(), PosixSubsystem::checkAddress(), HostedVirtualAddressSpace::clone(), HostedVirtualAddressSpace::doAllocateStack(), X64VirtualAddressSpace::doAllocateStack(), expandHeap(), X86VirtualAddressSpace::fromFlags(), X64VirtualAddressSpace::fromFlags(), X86VirtualAddressSpace::toFlags(), and X64VirtualAddressSpace::toFlags().

const size_t VirtualAddressSpace::Dirty = 0x1000

static

Whether the page has been dirtied.

Definition at line 73 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by X86VirtualAddressSpace::fromFlags(), X64VirtualAddressSpace::fromFlags(), X86VirtualAddressSpace::toFlags(), and X64VirtualAddressSpace::toFlags().

const size_t VirtualAddressSpace::Execute = 0x04

static

The page is executable. If this flag is not set the page is not executable.

Definition at line 52 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by Elf::allocate(), Elf::finaliseModule(), X86VirtualAddressSpace::fromFlags(), X64VirtualAddressSpace::fromFlags(), DynamicLinker::initPlt(), MemoryMappedFile::invalidate(), PosixSubsystem::invoke(), AnonymousMemoryMap::setPermissions(), MemoryMappedFile::setPermissions(), HostedVirtualAddressSpace::toFlags(), X64VirtualAddressSpace::toFlags(), DynamicLinker::trap(), AnonymousMemoryMap::trap(), and MemoryMappedFile::trap().

const size_t VirtualAddressSpace::Guarded = 0x100

static

If this flag is set, the page is guarded - only applicable to PPC

Definition at line 65 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by HashedPageTable::addMapping(), and HashedPageTable::initialise().

const size_t VirtualAddressSpace::KernelMode = 0x01

static

The page is only accessible from kernel-mode. If this flag is not set the page is also accessible from user-mode.

Definition at line 47 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

void* VirtualAddressSpace::m_Heap

Pointer to the beginning of the heap

Definition at line 250 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by HostedVirtualAddressSpace::clone(), X64VirtualAddressSpace::clone(), X86VirtualAddressSpace::fromFlags(), X64VirtualAddressSpace::getEndOfHeap(), X64VirtualAddressSpace::memIsInHeap(), X64VirtualAddressSpace::revertToKernelAddressSpace(), and setHeap().

void* VirtualAddressSpace::m_HeapEnd

Pointer to the current heap end

Definition at line 252 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by HostedVirtualAddressSpace::clone(), X64VirtualAddressSpace::clone(), expandHeap(), X86VirtualAddressSpace::fromFlags(), X64VirtualAddressSpace::getEndOfHeap(), X64VirtualAddressSpace::revertToKernelAddressSpace(), and setHeap().

physical_uintptr_t VirtualAddressSpace::m_ZeroPage = 0

static

Physical address of a zero page, always page-aligned.

Definition at line 254 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by expandHeap().

const size_t VirtualAddressSpace::MemoryCoherent = 0x80

static

If this flag is set, the page is memory coherent - only applicable to PPC

Definition at line 63 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by HashedPageTable::addMapping(), and HashedPageTable::initialise().

const size_t VirtualAddressSpace::Shared = 0x200

static

If this flag is set, the mapped physical page is shared.

Definition at line 67 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by HostedVirtualAddressSpace::clone(), X86VirtualAddressSpace::fromFlags(), X64VirtualAddressSpace::fromFlags(), MemoryMappedFile::invalidate(), HostedVirtualAddressSpace::revertToKernelAddressSpace(), AnonymousMemoryMap::setPermissions(), MemoryMappedFile::setPermissions(), X86VirtualAddressSpace::toFlags(), X64VirtualAddressSpace::toFlags(), AnonymousMemoryMap::trap(), and MemoryMappedFile::trap().

const size_t VirtualAddressSpace::Swapped = 0x40

static

If this flag is set, the page is swapped out

Definition at line 60 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by X86VirtualAddressSpace::fromFlags(), X64VirtualAddressSpace::fromFlags(), HostedVirtualAddressSpace::revertToKernelAddressSpace(), X86VirtualAddressSpace::toFlags(), HostedVirtualAddressSpace::toFlags(), and X64VirtualAddressSpace::toFlags().

const size_t VirtualAddressSpace::Write = 0x02

static

The page is writeable. If this flag is not set the page is read-only.

Definition at line 49 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by HashedPageTable::addMapping(), Elf::allocate(), ArmV7VirtualAddressSpace::allocateStack(), X86VirtualAddressSpace::beginCrossSpace(), PosixSubsystem::checkAddress(), PerProcessorScheduler::checkEventState(), PPC32VirtualAddressSpace::clone(), HostedVirtualAddressSpace::clone(), MemoryMappedFile::compact(), HostedVirtualAddressSpace::doAllocateStack(), X64VirtualAddressSpace::doAllocateStack(), Bios::executeInterrupt(), expandHeap(), Elf::finaliseModule(), ArmV7PhysicalMemoryManager::PageStack::free(), HostedPhysicalMemoryManager::PageStack::free(), X86VirtualAddressSpace::fromFlags(), ArmV7VirtualAddressSpace::fromFlags(), X64VirtualAddressSpace::fromFlags(), Thread::getTlsBase(), VbeFramebuffer::hwRedraw(), UsbUlpi::initialise(), HashedPageTable::initialise(), PPCVga::initialise(), MemoryPool::initialise(), GPTimer::initialise(), Prcm::initialise(), BusMasterIde::initialise(), KernelElf::initialise(), X86CommonPhysicalMemoryManager::initialise64(), Ehci::initialiseController(), ARMV7InterruptManager::initialiseProcessor(), PPC32VirtualAddressSpace::initialRoster(), DynamicLinker::initPlt(), Ipc::IpcMessage::IpcMessage(), CdiIrqHandler::irq(), Elf::loadModule(), Device::Address::map(), MIPS32VirtualAddressSpace::map(), Cache::map(), X86VirtualAddressSpace::mapCrossSpace(), X86CommonPhysicalMemoryManager::PageStack::maybeMap(), X86Vga::moveCursor(), VbeDisplay::newBuffer(), Nic3C90x::Nic3C90x(), MemoryMappedFile::remove(), ArmBeagleSerial::setBase(), AnonymousMemoryMap::setPermissions(), MemoryMappedFile::setPermissions(), Framebuffer::swCreateBuffer(), MemoryMappedFile::sync(), X86VirtualAddressSpace::toFlags(), HostedVirtualAddressSpace::toFlags(), ArmV7VirtualAddressSpace::toFlags(), X64VirtualAddressSpace::toFlags(), DynamicLinker::trap(), AnonymousMemoryMap::trap(), MemoryMappedFile::trap(), and X86VirtualAddressSpace::X86VirtualAddressSpace().

const size_t VirtualAddressSpace::WriteCombine = 0x400

static

If this flag is set, the cache strategy is write-combine.

Definition at line 69 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by X86VirtualAddressSpace::fromFlags(), X64VirtualAddressSpace::fromFlags(), Device::Address::map(), X86VirtualAddressSpace::toFlags(), and X64VirtualAddressSpace::toFlags().

const size_t VirtualAddressSpace::WriteThrough = 0x08

static

If this flag is set, the cache strategy is write-through.

Definition at line 54 of file include/pedigree/kernel/processor/VirtualAddressSpace.h.

Referenced by HashedPageTable::addMapping(), X86VirtualAddressSpace::fromFlags(), X64VirtualAddressSpace::fromFlags(), HashedPageTable::initialise(), PPCVga::initialise(), PPC32VirtualAddressSpace::initialRoster(), Device::Address::map(), X86Vga::moveCursor(), X86VirtualAddressSpace::toFlags(), and X64VirtualAddressSpace::toFlags().

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