X64SyscallManager Class Reference

#include <SyscallManager.h>

Inheritance diagram for X64SyscallManager:

Collaboration diagram for X64SyscallManager:

Public Member Functions
virtual bool	registerSyscallHandler (Service_t Service, SyscallHandler *pHandler, Registration &registration, FastEntry entry=nullptr)
uintptr_t	syscall (Service_t service, uintptr_t function, uintptr_t p1, uintptr_t p2, uintptr_t p3, uintptr_t p4, uintptr_t p5)
Public Member Functions inherited from SyscallManager
EXPORTED_PUBLIC bool	requestThreadExit ()
EXPORTED_PUBLIC bool	requestProcessExit (int status)
EXPORTED_PUBLIC bool	requestEventReturn ()
EXPORTED_PUBLIC bool	requestEventStatePop ()
EXPORTED_PUBLIC bool	requestStateRestore (const ProcessorState &state)
EXPORTED_PUBLIC bool	requestUserJump (uintptr_t instructionPointer, uintptr_t stackPointer)
EXPORTED_PUBLIC bool	requestReboot (Machine::ShutdownType type=Machine::ShutdownType::Restart)

Static Public Member Functions
static X64SyscallManager &	instance ()
static void	initialiseProcessor () INITIALISATION_ONLY
Static Public Member Functions inherited from SyscallManager
static EXPORTED_PUBLIC SyscallManager &	instance ()

Private Member Functions
	X64SyscallManager () INITIALISATION_ONLY
	X64SyscallManager (const X64SyscallManager &)
X64SyscallManager &	operator= (const X64SyscallManager &)
virtual	~X64SyscallManager ()

Static Private Member Functions
static void	syscall (SyscallState &syscallState) USED

Static Private Attributes
static X64SyscallManager	m_Instance

Friends
class	ProcessorBase

Additional Inherited Members
Public Types inherited from SyscallManager
enum	PostSyscallActionKind {   NoPostSyscallAction , TerminateCurrentThread , ExitCurrentProcess , ReturnFromEvent ,   PopEventState , RestoreProcessorState , JumpToUserspace , RebootSystem }
using	FastEntry = uintptr_t(*)(SyscallHandler *, SyscallState &)
Protected Member Functions inherited from SyscallManager
bool	registerHandler (Service_t service, SyscallHandler *pHandler, Registration &registration, FastEntry entry=nullptr)
ALWAYS_INLINE uintptr_t	dispatchHandler (const HandlerLease &lease, SyscallState &state) const
bool	closeHandler (Registration &registration)
bool	unregisterHandler (Registration &registration)
bool	acquireHandler (Service_t service, HandlerLease &lease, PostSyscallAction &action)
	SyscallManager ()
virtual	~SyscallManager ()

Detailed Description

The syscall manager on x64 processors

Definition at line 36 of file kernel/core/processor/x64/SyscallManager.h.

Constructor & Destructor Documentation

X64SyscallManager() [1/2]

X64SyscallManager::X64SyscallManager ( )

private

The constructor

Definition at line 455 of file x64/SyscallManager.cc.

X64SyscallManager() [2/2]

X64SyscallManager::X64SyscallManager ( const X64SyscallManager &  )

private

Copy constructor

Note

NOT implemented

~X64SyscallManager()

X64SyscallManager::~X64SyscallManager ( )

privatevirtual

The destructor

Definition at line 456 of file x64/SyscallManager.cc.

Member Function Documentation

initialiseProcessor()

void X64SyscallManager::initialiseProcessor ( )

static

Initialises this processors syscall handling

Note

This should only be called from Processor::initialise1() and Multiprocessor::applicationProcessorStartup()

Definition at line 439 of file x64/SyscallManager.cc.

References X86CommonProcessor::readMachineSpecificRegister(), and X86CommonProcessor::writeMachineSpecificRegister().

instance()

static X64SyscallManager & X64SyscallManager::instance ( )

inlinestatic

Get the X64SyscallManager class instance

Returns

instance of the X64SyscallManager class

Definition at line 42 of file kernel/core/processor/x64/SyscallManager.h.

References m_Instance.

operator=()

X64SyscallManager & X64SyscallManager::operator= ( const X64SyscallManager &  )

private

Assignment operator

Note

NOT implemented

registerSyscallHandler()

bool X64SyscallManager::registerSyscallHandler ( Service_t  Service, SyscallHandler *  pHandler, Registration &  registration, FastEntry  entry = nullptr  )

virtual

Register a syscall handler

Parameters

[in]	Service	the service number you want to register
[in]	pHandler	the interrupt handler
[in]	entry	optional nonvirtual implementation of the same syscall contract

Returns

true, if successfully registered, false otherwise

Implements SyscallManager.

Definition at line 138 of file x64/SyscallManager.cc.

syscall() [1/2]

uintptr_t X64SyscallManager::syscall ( Service_t  service, uintptr_t  function, uintptr_t  p1, uintptr_t  p2, uintptr_t  p3, uintptr_t  p4, uintptr_t  p5  )

virtual

Called to execute a syscall.

Implements SyscallManager.

Definition at line 421 of file x64/SyscallManager.cc.

syscall() [2/2]

void X64SyscallManager::syscall ( SyscallState &  syscallState )

staticprivate

Called when a syscall was called

Parameters

[in]

syscallState

reference to the usermode state before the syscall

Todo:

this is an extraordinary hack, this should be done in a way more abstract way than this!!

Definition at line 143 of file x64/SyscallManager.cc.

References Thread::abandonAllStates(), Thread::abandonCurrentState(), TimeTracker::attributeSyscall(), Thread::completeAffinityAtSafePoint(), ProcessorBase::contextSwitch(), Thread::Continue, Thread::Exit, Subsystem::exit(), TimeTracker::finishForUserReturn(), TimeTracker::finishInKernel(), Thread::getErrno(), Thread::getParent(), Thread::getScheduler(), Thread::getUnwindState(), ProcessorBase::information(), LIKELY, m_Instance, ProcessorBase::restoreState(), PerProcessorScheduler::serviceUserReturnWork(), Thread::setErrno(), ProcessorBase::setInterrupts(), Thread::takeDeferredProcessExit(), Thread::TerminateThread, Thread::transitionTime(), and Thread::transitionTimeAtInterruptReturn().

Friends And Related Symbol Documentation

ProcessorBase

friend class ProcessorBase

friend

Definition at line 37 of file kernel/core/processor/x64/SyscallManager.h.

Member Data Documentation

m_Instance

X64SyscallManager X64SyscallManager::m_Instance

staticprivate

The instance of the syscall manager

Definition at line 76 of file kernel/core/processor/x64/SyscallManager.h.

Referenced by instance(), and syscall().

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

• kernel/core/processor/x64/SyscallManager.h
• x64/SyscallManager.cc