ARM specific process implementation. More...

#include <ARMProcess.h>

Inheritance diagram for ARMProcess:

Public Member Functions
	ARMProcess (ProcessID id, Address entry, bool privileged, const MemoryMap &map)
	Constructor function. More...

virtual	~ARMProcess ()
	Destructor function. More...

void	setCpuState (const CPUState *cpuState)
	Overwrite the saved CPU registers for this task. More...

const CPUState *	cpuState () const
	Retrieve saved CPU state. More...

virtual Result	join (const uint result)
	Complete waiting for another Process. More...

virtual Result	initialize ()
	Initialize the Process. More...

virtual void	reset (const Address entry)
	Restart execution at the given entry point. More...

virtual void	execute (Process *previous)
	Allow the Process to run on the CPU. More...

Public Member Functions inherited from Process
	Process (ProcessID id, Address entry, bool privileged, const MemoryMap &map)
	Constructor function. More...

virtual	~Process ()
	Destructor function. More...

ProcessID	getID () const
	Retrieve our ID number. More...

ProcessID	getParent () const
	Retrieve our parent ID. More...

ProcessID	getWait () const
	Get Wait ID. More...

uint	getWaitResult () const
	Get wait result. More...

ProcessShares &	getShares ()
	Get process shares. More...

State	getState () const
	Retrieves the current state. More...

MemoryContext *	getMemoryContext ()
	Get MMU memory context. More...

bool	isPrivileged () const
	Get privilege. More...

bool	operator== (Process *proc)
	Compare two processes. More...

Private Attributes
CPUState	m_cpuState
	Contains all the CPU registers for this task. More...

Additional Inherited Members
Public Types inherited from Process
enum	Result { Success, InvalidArgument, MemoryMapError, OutOfMemory, WakeupPending }
	Result codes. More...

enum	State { Ready, Sleeping, Waiting, Stopped }
	Represents the execution state of the Process. More...

Protected Member Functions inherited from Process
Result	wakeup ()
	Prevent process from sleeping. More...

Result	sleep (const Timer::Info *timer, bool ignoreWakeups)
	Stops the process for executing until woken up. More...

Result	wait (ProcessID id)
	Let Process wait for other Process to terminate. More...

Result	stop ()
	Stop execution of this process. More...

Result	resume ()
	Resume execution when this process is stopped. More...

Result	raiseEvent (const struct ProcessEvent *event)
	Raise kernel event. More...

const Timer::Info &	getSleepTimer () const
	Get sleep timer. More...

void	setParent (ProcessID id)
	Set parent process ID. More...

Protected Attributes inherited from Process
const ProcessID	m_id
	Process Identifier. More...

ProcessID	m_parent
	Parent process. More...

State	m_state
	Current process status. More...

ProcessID	m_waitId
	Waits for exit of this Process. More...

uint	m_waitResult
	Wait exit result of the other Process. More...

bool	m_privileged
	Privilege level. More...

Address	m_entry
	Entry point of the program. More...

MemoryMap	m_map
	Virtual memory layout. More...

MemoryContext *	m_memoryContext
	MMU memory context. More...

Size	m_wakeups
	Number of wakeups received. More...

Timer::Info	m_sleepTimer
	Sleep timer value. More...

ProcessShares	m_shares
	Contains virtual memory shares between this process and others. More...

MemoryChannel *	m_kernelChannel
	Channel for sending kernel events to the Process. More...

Detailed Description

ARM specific process implementation.

Definition at line 34 of file ARMProcess.h.

Constructor & Destructor Documentation

◆ ARMProcess()

ARMProcess::ARMProcess	(	ProcessID	id,
		Address	entry,
		bool	privileged,
		const MemoryMap &	map
	)

Constructor function.

Parameters

id	Process Identifier
entry	Initial program counter value.
privileged	If true, the process has unlimited access to hardware.
map	Memory mapping to use to create the process.

Definition at line 28 of file ARMProcess.cpp.

◆ ~ARMProcess()

ARMProcess::~ARMProcess ( )

virtual

Destructor function.

Definition at line 82 of file ARMProcess.cpp.

Member Function Documentation

◆ cpuState()

const CPUState * ARMProcess::cpuState ( ) const

Retrieve saved CPU state.

Returns: Saved CPUState for this task.

Definition at line 86 of file ARMProcess.cpp.

References m_cpuState.

Referenced by setCpuState().

◆ execute()

void ARMProcess::execute ( Process * previous )

virtual

Allow the Process to run on the CPU.

Implements Process.

Definition at line 117 of file ARMProcess.cpp.

References MemoryContext::activate(), MemoryBlock::copy(), firstProcess, m_cpuState, Process::m_memoryContext, CPUState::padding, and svcStack.

◆ initialize()

Process::Result ARMProcess::initialize ( )

virtual

Initialize the Process.

Allocates various (architecture specific) resources, creates MMU context and stacks.

Returns: Result code

Reimplemented from Process.

Definition at line 33 of file ARMProcess.cpp.

References Memory::Range::access, Allocator::Range::address, Allocator::Range::alignment, ERROR, MemoryContext::initialize(), Process::initialize(), WeakSingleton< Kernel >::instance(), Process::m_entry, Process::m_map, Process::m_memoryContext, MemoryContext::mapRangeContiguous(), Process::MemoryMapError, Process::OutOfMemory, PAGESIZE, Memory::Range::phys, MemoryMap::range(), Memory::Readable, reset(), Memory::Range::size, Allocator::Range::size, MemoryContext::Success, Allocator::Success, Memory::User, MemoryMap::UserStack, and Memory::Writable.

◆ join()

ARMProcess::Result ARMProcess::join ( const uint result )

virtual

Complete waiting for another Process.

Parameters

result Exit code of the other process

Reimplemented from Process.

Definition at line 96 of file ARMProcess.cpp.

References Process::join(), m_cpuState, CPUState::r0, Process::Success, and API::Success.

◆ reset()

void ARMProcess::reset ( const Address entry )

virtual

Restart execution at the given entry point.

Parameters

entry Address to begin execution.

Implements Process.

Definition at line 107 of file ARMProcess.cpp.

References CPUState::cpsr, entry, m_cpuState, Process::m_map, Process::m_privileged, MEMALIGN8, CPUState::pc, MemoryMap::range(), MemoryBlock::set(), Memory::Range::size, CPUState::sp, SYS_MODE, MemoryMap::UserStack, USR_MODE, and Memory::Range::virt.

Referenced by initialize().

◆ setCpuState()

void ARMProcess::setCpuState ( const CPUState * cpuState )

Overwrite the saved CPU registers for this task.

Parameters

cpuState Pointer to newly saved CPU registers

Definition at line 91 of file ARMProcess.cpp.

References MemoryBlock::copy(), cpuState(), and m_cpuState.

Referenced by SunxiKernel::interrupt(), RaspberryKernel::interrupt(), and ARMKernel::trap().

Field Documentation

◆ m_cpuState

CPUState ARMProcess::m_cpuState

private

Contains all the CPU registers for this task.

Definition at line 99 of file ARMProcess.h.

Referenced by cpuState(), execute(), join(), reset(), and setCpuState().

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

kernel/arm/ARMProcess.h
kernel/arm/ARMProcess.cpp

Public Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ARMProcess()

◆ ~ARMProcess()

Member Function Documentation

◆ cpuState()

◆ execute()

◆ initialize()

◆ join()

◆ reset()

◆ setCpuState()

Field Documentation

◆ m_cpuState