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gem5
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gem5
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#include <system.hh>
Public Types | |
| typedef FreebsdArmSystemParams | Params |
| Boilerplate params code. More... | |
 Public Types inherited from GenericArmSystem | |
| typedef GenericArmSystemParams | Params |
| Public Types inherited from ArmSystem | |
| typedef ArmSystemParams | Params |
| Public Types inherited from System | |
| typedef SystemParams | Params |
| Public Types inherited from MemObject | |
| typedef MemObjectParams | Params |
| Public Types inherited from ClockedObject | |
| typedef ClockedObjectParams | Params |
| Parameters of ClockedObject. More... | |
| Public Types inherited from SimObject | |
| typedef SimObjectParams | Params |
Public Member Functions | |
| const Params * | params () const |
| FreebsdArmSystem (Params *p) | |
| ~FreebsdArmSystem () | |
| void | initState () |
| Initialise the system. More... | |
| void | startup () |
| startup() is the final initialization call before simulation. More... | |
| void | mapPid (ThreadContext *tc, uint32_t pid) |
| This function creates a new task Id for the given pid. More... | |
| Public Member Functions inherited from GenericArmSystem | |
| const Params * | params () const |
| GenericArmSystem (Params *p) | |
| virtual | ~GenericArmSystem () |
| Public Member Functions inherited from ArmSystem | |
| const Params * | params () const |
| ArmSystem (Params *p) | |
| ~ArmSystem () | |
| virtual Addr | fixFuncEventAddr (Addr addr) |
| Fix up an address used to match PCs for hooking simulator events on to target function executions. More... | |
| bool | haveSecurity () const |
| Returns true if this system implements the Security Extensions. More... | |
| bool | haveLPAE () const |
| Returns true if this system implements the Large Physical Address Extension. More... | |
| bool | haveVirtualization () const |
| Returns true if this system implements the virtualization Extensions. More... | |
| void | setGenericTimer (GenericTimer *generic_timer) |
| Sets the pointer to the Generic Timer. More... | |
| GenericTimer * | getGenericTimer () const |
| Get a pointer to the system's generic timer model. More... | |
| bool | highestELIs64 () const |
| Returns true if the register width of the highest implemented exception level is 64 bits (ARMv8) More... | |
| ExceptionLevel | highestEL () const |
| Returns the highest implemented exception level. More... | |
| Addr | resetAddr64 () const |
| Returns the reset address if the highest implemented exception level is 64 bits (ARMv8) More... | |
| bool | haveLargeAsid64 () const |
| Returns true if ASID is 16 bits in AArch64 (ARMv8) More... | |
| uint8_t | physAddrRange64 () const |
| Returns the supported physical address range in bits if the highest implemented exception level is 64 bits (ARMv8) More... | |
| uint8_t | physAddrRange () const |
| Returns the supported physical address range in bits. More... | |
| Addr | physAddrMask () const |
| Returns the physical address mask. More... | |
| const AddrRange & | m5opRange () const |
| Range used by memory-mapped m5 pseudo-ops if enabled. More... | |
| Public Member Functions inherited from System | |
| void | init () override |
| After all objects have been created and all ports are connected, check that the system port is connected. More... | |
| MasterPort & | getSystemPort () |
| Get a reference to the system port that can be used by non-structural simulation objects like processes or threads, or external entities like loaders and debuggers, etc, to access the memory system. More... | |
| BaseMasterPort & | getMasterPort (const std::string &if_name, PortID idx=InvalidPortID) override |
| Additional function to return the Port of a memory object. More... | |
| unsigned int | cacheLineSize () const |
| Get the cache line size of the system. More... | |
| ThreadContext * | getThreadContext (ContextID tid) |
| int | numContexts () |
| int | numRunningContexts () |
| Return number of running (non-halted) thread contexts in system. More... | |
| KvmVM * | getKvmVM () |
| Get a pointer to the Kernel Virtual Machine (KVM) SimObject, if present. More... | |
| PhysicalMemory & | getPhysMem () |
| Get a pointer to access the physical memory of the system. More... | |
| Addr | freeMemSize () const |
| Amount of physical memory that is still free. More... | |
| Addr | memSize () const |
| Amount of physical memory that exists. More... | |
| bool | isMemAddr (Addr addr) const |
| Check if a physical address is within a range of a memory that is part of the global address map. More... | |
| Arch | getArch () const |
| Get the architecture. More... | |
| Addr | getPageBytes () const |
| Get the page bytes for the ISA. More... | |
| Addr | getPageShift () const |
| Get the number of bits worth of in-page address for the ISA. More... | |
| ThermalModel * | getThermalModel () const |
| The thermal model used for this system (if any). More... | |
| MasterID | getMasterId (std::string req_name) |
| Request an id used to create a request object in the system. More... | |
| std::string | getMasterName (MasterID master_id) |
| Get the name of an object for a given request id. More... | |
| MasterID | maxMasters () |
| Get the number of masters registered in the system. More... | |
| void | regStats () override |
| Register statistics for this object. More... | |
| uint64_t | incWorkItemsBegin () |
| Called by pseudo_inst to track the number of work items started by this system. More... | |
| uint64_t | incWorkItemsEnd () |
| Called by pseudo_inst to track the number of work items completed by this system. More... | |
| int | markWorkItem (int index) |
| Called by pseudo_inst to mark the cpus actively executing work items. More... | |
| void | workItemBegin (uint32_t tid, uint32_t workid) |
| void | workItemEnd (uint32_t tid, uint32_t workid) |
| bool | breakpoint () |
| System (Params *p) | |
| ~System () | |
| void | initState () override |
| initState() is called on each SimObject when not restoring from a checkpoint. More... | |
| const Params * | params () const |
| Addr | getKernelStart () const |
| Returns the address the kernel starts at. More... | |
| Addr | getKernelEnd () const |
| Returns the address the kernel ends at. More... | |
| Addr | getKernelEntry () const |
| Returns the address the entry point to the kernel code. More... | |
| Addr | allocPhysPages (int npages) |
| Allocate npages contiguous unused physical pages. More... | |
| ContextID | registerThreadContext (ThreadContext *tc, ContextID assigned=InvalidContextID) |
| void | replaceThreadContext (ThreadContext *tc, ContextID context_id) |
| void | serialize (CheckpointOut &cp) const override |
| Serialize an object. More... | |
| void | unserialize (CheckpointIn &cp) override |
| Unserialize an object. More... | |
| void | drainResume () override |
| Resume execution after a successful drain. More... | |
| bool | isAtomicMode () const |
| Is the system in atomic mode? More... | |
| bool | isTimingMode () const |
| Is the system in timing mode? More... | |
| bool | bypassCaches () const |
| Should caches be bypassed? More... | |
| Enums::MemoryMode | getMemoryMode () const |
| Get the memory mode of the system. More... | |
| void | setMemoryMode (Enums::MemoryMode mode) |
| Change the memory mode of the system. More... | |
| template<class T , typename... Args> | |
| T * | addFuncEvent (const SymbolTable *symtab, const char *lbl, const std::string &desc, Args...args) |
| Add a function-based event to the given function, to be looked up in the specified symbol table. More... | |
| template<class T > | |
| T * | addFuncEvent (const SymbolTable *symtab, const char *lbl) |
| template<class T , typename... Args> | |
| T * | addFuncEventOrPanic (const SymbolTable *symtab, const char *lbl, Args...args) |
| template<class T , typename... Args> | |
| T * | addKernelFuncEvent (const char *lbl, Args...args) |
| Add a function-based event to a kernel symbol. More... | |
| template<class T , typename... Args> | |
| T * | addKernelFuncEventOrPanic (const char *lbl, Args...args) |
| Public Member Functions inherited from MemObject | |
| const Params * | params () const |
| MemObject (const Params *params) | |
| virtual BaseSlavePort & | getSlavePort (const std::string &if_name, PortID idx=InvalidPortID) |
| Get a slave port with a given name and index. More... | |
| Public Member Functions inherited from ClockedObject | |
| ClockedObject (const ClockedObjectParams *p) | |
| const Params * | params () const |
| Enums::PwrState | pwrState () const |
| std::string | pwrStateName () const |
| std::vector< double > | pwrStateWeights () const |
| Returns the percentage residency for each power state. More... | |
| void | computeStats () |
| Record stats values like state residency by computing the time difference from previous update. More... | |
| void | pwrState (Enums::PwrState) |
| Public Member Functions inherited from SimObject | |
| const Params * | params () const |
| SimObject (const Params *_params) | |
| virtual | ~SimObject () |
| virtual const std::string | name () const |
| virtual void | loadState (CheckpointIn &cp) |
| loadState() is called on each SimObject when restoring from a checkpoint. More... | |
| virtual void | resetStats () |
| Reset statistics associated with this object. More... | |
| virtual void | regProbePoints () |
| Register probe points for this object. More... | |
| virtual void | regProbeListeners () |
| Register probe listeners for this object. More... | |
| ProbeManager * | getProbeManager () |
| Get the probe manager for this object. More... | |
| DrainState | drain () override |
| Provide a default implementation of the drain interface for objects that don't need draining. More... | |
| virtual void | memWriteback () |
| Write back dirty buffers to memory using functional writes. More... | |
| virtual void | memInvalidate () |
| Invalidate the contents of memory buffers. More... | |
| Public Member Functions inherited from EventManager | |
| EventManager (EventManager &em) | |
| EventManager (EventManager *em) | |
| EventManager (EventQueue *eq) | |
| EventQueue * | eventQueue () const |
| void | schedule (Event &event, Tick when) |
| void | deschedule (Event &event) |
| void | reschedule (Event &event, Tick when, bool always=false) |
| void | schedule (Event *event, Tick when) |
| void | deschedule (Event *event) |
| void | reschedule (Event *event, Tick when, bool always=false) |
| void | wakeupEventQueue (Tick when=(Tick)-1) |
| void | setCurTick (Tick newVal) |
| Public Member Functions inherited from Serializable | |
| Serializable () | |
| virtual | ~Serializable () |
| void | serializeSection (CheckpointOut &cp, const char *name) const |
| Serialize an object into a new section. More... | |
| void | serializeSection (CheckpointOut &cp, const std::string &name) const |
| void | unserializeSection (CheckpointIn &cp, const char *name) |
| Unserialize an a child object. More... | |
| void | unserializeSection (CheckpointIn &cp, const std::string &name) |
| Public Member Functions inherited from Drainable | |
| DrainState | drainState () const |
| Return the current drain state of an object. More... | |
| virtual void | notifyFork () |
| Notify a child process of a fork. More... | |
| Public Member Functions inherited from Clocked | |
| void | updateClockPeriod () const |
| Update the tick to the current tick. More... | |
| Tick | clockEdge (Cycles cycles=Cycles(0)) const |
| Determine the tick when a cycle begins, by default the current one, but the argument also enables the caller to determine a future cycle. More... | |
| Cycles | curCycle () const |
| Determine the current cycle, corresponding to a tick aligned to a clock edge. More... | |
| Tick | nextCycle () const |
| Based on the clock of the object, determine the start tick of the first cycle that is at least one cycle in the future. More... | |
| uint64_t | frequency () const |
| Tick | clockPeriod () const |
| double | voltage () const |
| Cycles | ticksToCycles (Tick t) const |
| Tick | cyclesToTicks (Cycles c) const |
Public Attributes | |
| bool | enableContextSwitchStatsDump |
| When enabled, dump stats/task info on context switches for Streamline and per-thread cache occupancy studies, etc. More... | |
| std::map< uint32_t, uint32_t > | taskMap |
| This map stores a mapping of OS process IDs to internal Task IDs. More... | |
| std::ostream * | taskFile |
| This is a file that is placed in the run directory that prints out mappings between taskIds and OS process IDs. More... | |
| Public Attributes inherited from ArmSystem | |
| bool | multiProc |
| true if this a multiprocessor system More... | |
| Public Attributes inherited from System | |
| std::vector< ThreadContext * > | threadContexts |
| int | _numContexts |
| const bool | multiThread |
| Addr | pagePtr |
| uint64_t | init_param |
| PortProxy | physProxy |
| Port to physical memory used for writing object files into ram at boot. More... | |
| SymbolTable * | kernelSymtab |
| kernel symbol table More... | |
| ObjectFile * | kernel |
| Object pointer for the kernel code. More... | |
| Addr | kernelStart |
| Beginning of kernel code. More... | |
| Addr | kernelEnd |
| End of kernel code. More... | |
| Addr | kernelEntry |
| Entry point in the kernel to start at. More... | |
| Addr | loadAddrMask |
| Mask that should be anded for binary/symbol loading. More... | |
| Addr | loadAddrOffset |
| Offset that should be used for binary/symbol loading. More... | |
| std::vector< BaseRemoteGDB * > | remoteGDB |
| std::vector< GDBListener * > | gdbListen |
| Counter | totalNumInsts |
| EventQueue | instEventQueue |
| std::map< std::pair< uint32_t, uint32_t >, Tick > | lastWorkItemStarted |
| std::map< uint32_t, Stats::Histogram * > | workItemStats |
| FutexMap | futexMap |
| std::set< int > | PIDs |
| Process set to track which PIDs have already been allocated. More... | |
| std::list< BasicSignal > | signalList |
Private Attributes | |
| PCEvent * | kernelPanicEvent |
| Event to halt the simulator if the kernel calls panic() More... | |
| PCEvent * | kernelOopsEvent |
| Event to halt the simulator if the kernel calls oopses. More... | |
| FreeBSD::UDelayEvent * | uDelaySkipEvent |
| PC based event to skip udelay(<time>) calls and quiesce the processor for the appropriate amount of time. More... | |
| FreeBSD::UDelayEvent * | constUDelaySkipEvent |
| Another PC based skip event for const_udelay(). More... | |
| Addr | secDataPtrAddr |
| These variables store addresses of important data structures that are normaly kept coherent at boot with cache mainetence operations. More... | |
| Addr | secDataAddr |
| Addr | penReleaseAddr |
| Addr | pen64ReleaseAddr |
| Addr | bootReleaseAddr |
Additional Inherited Members | |
| Static Public Member Functions inherited from ArmSystem | |
| static bool | haveSecurity (ThreadContext *tc) |
| Returns true if the system of a specific thread context implements the Security Extensions. More... | |
| static bool | haveVirtualization (ThreadContext *tc) |
| Returns true if the system of a specific thread context implements the virtualization Extensions. More... | |
| static bool | haveLPAE (ThreadContext *tc) |
| Returns true if the system of a specific thread context implements the Large Physical Address Extension. More... | |
| static bool | highestELIs64 (ThreadContext *tc) |
| Returns true if the register width of the highest implemented exception level for the system of a specific thread context is 64 bits (ARMv8) More... | |
| static ExceptionLevel | highestEL (ThreadContext *tc) |
| Returns the highest implemented exception level for the system of a specific thread context. More... | |
| static Addr | resetAddr64 (ThreadContext *tc) |
| Returns the reset address if the highest implemented exception level for the system of a specific thread context is 64 bits (ARMv8) More... | |
| static uint8_t | physAddrRange (ThreadContext *tc) |
| Returns the supported physical address range in bits for the system of a specific thread context. More... | |
| static Addr | physAddrMask (ThreadContext *tc) |
| Returns the physical address mask for the system of a specific thread context. More... | |
| static bool | haveLargeAsid64 (ThreadContext *tc) |
| Returns true if ASID is 16 bits for the system of a specific thread context while in AArch64 (ARMv8) More... | |
| Static Public Member Functions inherited from System | |
| static void | printSystems () |
| Static Public Member Functions inherited from SimObject | |
| static void | serializeAll (CheckpointOut &cp) |
| Serialize all SimObjects in the system. More... | |
| static SimObject * | find (const char *name) |
| Find the SimObject with the given name and return a pointer to it. More... | |
| Static Public Member Functions inherited from Serializable | |
| static const std::string & | currentSection () |
| Get the fully-qualified name of the active section. More... | |
| static void | serializeAll (const std::string &cpt_dir) |
| static void | unserializeGlobals (CheckpointIn &cp) |
| Static Public Attributes inherited from System | |
| static std::vector< System * > | systemList |
| static int | numSystemsRunning = 0 |
| static const int | maxPID = 32768 |
| Static Public Attributes inherited from Serializable | |
| static int | ckptCount = 0 |
| static int | ckptMaxCount = 0 |
| static int | ckptPrevCount = -1 |
| Protected Member Functions inherited from ArmSystem | |
| ObjectFile * | getBootLoader (ObjectFile *const obj) |
| Get a boot loader that matches the kernel. More... | |
| Protected Member Functions inherited from System | |
| virtual void | serializeSymtab (CheckpointOut &os) const |
| If needed, serialize additional symbol table entries for a specific subclass of this system. More... | |
| virtual void | unserializeSymtab (CheckpointIn &cp) |
| If needed, unserialize additional symbol table entries for a specific subclass of this system. More... | |
| Protected Member Functions inherited from Drainable | |
| Drainable () | |
| virtual | ~Drainable () |
| void | signalDrainDone () const |
| Signal that an object is drained. More... | |
| Protected Member Functions inherited from Clocked | |
| Clocked (ClockDomain &clk_domain) | |
| Create a clocked object and set the clock domain based on the parameters. More... | |
| Clocked (Clocked &)=delete | |
| Clocked & | operator= (Clocked &)=delete |
| virtual | ~Clocked () |
| Virtual destructor due to inheritance. More... | |
| void | resetClock () const |
| Reset the object's clock using the current global tick value. More... | |
| Protected Attributes inherited from ArmSystem | |
| Linux::DebugPrintkEvent * | debugPrintkEvent |
| PC based event to skip the dprink() call and emulate its functionality. More... | |
| std::vector< std::unique_ptr < ObjectFile > > | bootLoaders |
| Bootloaders. More... | |
| ObjectFile * | bootldr |
| Pointer to the bootloader object. More... | |
| const bool | _haveSecurity |
| True if this system implements the Security Extensions. More... | |
| const bool | _haveLPAE |
| True if this system implements the Large Physical Address Extension. More... | |
| const bool | _haveVirtualization |
| True if this system implements the virtualization Extensions. More... | |
| GenericTimer * | _genericTimer |
| Pointer to the Generic Timer wrapper. More... | |
| bool | _highestELIs64 |
| True if the register width of the highest implemented exception level is 64 bits (ARMv8) More... | |
| const Addr | _resetAddr64 |
| Reset address if the highest implemented exception level is 64 bits (ARMv8) More... | |
| const uint8_t | _physAddrRange64 |
| Supported physical address range in bits if the highest implemented exception level is 64 bits (ARMv8) More... | |
| const bool | _haveLargeAsid64 |
| True if ASID is 16 bits in AArch64 (ARMv8) More... | |
| const AddrRange | _m5opRange |
| Range for memory-mapped m5 pseudo ops. More... | |
| Protected Attributes inherited from System | |
| KvmVM *const | kvmVM |
| PhysicalMemory | physmem |
| Enums::MemoryMode | memoryMode |
| const unsigned int | _cacheLineSize |
| uint64_t | workItemsBegin |
| uint64_t | workItemsEnd |
| uint32_t | numWorkIds |
| std::vector< bool > | activeCpus |
| std::vector< std::string > | masterIds |
| This array is a per-system list of all devices capable of issuing a memory system request and an associated string for each master id. More... | |
| ThermalModel * | thermalModel |
| Params * | _params |
| Protected Attributes inherited from ClockedObject | |
| Enums::PwrState | _currPwrState |
| To keep track of the current power state. More... | |
| Tick | prvEvalTick |
| Stats::Scalar | numPwrStateTransitions |
| Stats::Distribution | pwrStateClkGateDist |
| Stats::Vector | pwrStateResidencyTicks |
| Protected Attributes inherited from SimObject | |
| const SimObjectParams * | _params |
| Cached copy of the object parameters. More... | |
| Protected Attributes inherited from EventManager | |
| EventQueue * | eventq |
| A pointer to this object's event queue. More... | |
| typedef FreebsdArmSystemParams FreebsdArmSystem::Params |
| FreebsdArmSystem::FreebsdArmSystem | ( | Params * | p | ) |
Definition at line 53 of file system.cc.
References kernelOopsEvent, kernelPanicEvent, and uDelaySkipEvent.
| FreebsdArmSystem::~FreebsdArmSystem | ( | ) |
Definition at line 147 of file system.cc.
References constUDelaySkipEvent, and uDelaySkipEvent.
|
virtual |
Initialise the system.
Reimplemented from GenericArmSystem.
Definition at line 77 of file system.cc.
References DtbObject::addBootCmdLine(), addr, bootReleaseAddr, createObjectFile(), debugSymbolTable, fatal, SymbolTable::findAddress(), DtbObject::findReleaseAddr(), ArmISA::i, inform, GenericArmSystem::initState(), System::kernel, System::kernelSymtab, System::loadAddrMask, System::loadAddrOffset, ObjectFile::loadGlobalSymbols(), ObjectFile::loadSections(), params(), System::physProxy, PowerISA::ra, ObjectFile::setTextBase(), System::threadContexts, ULL, and warn.
| void FreebsdArmSystem::mapPid | ( | ThreadContext * | tc, |
| uint32_t | pid | ||
| ) |
This function creates a new task Id for the given pid.
| tc | thread context that is currentyl executing |
|
inline |
|
virtual |
|
private |
Definition at line 113 of file system.hh.
Referenced by initState().
|
private |
Another PC based skip event for const_udelay().
Similar to the udelay skip, but this function precomputes the first multiply that is done in the generic case since the parameter is known at compile time. Thus we need to do some division to get back to us.
Definition at line 102 of file system.hh.
Referenced by ~FreebsdArmSystem().
| bool FreebsdArmSystem::enableContextSwitchStatsDump |
|
private |
Event to halt the simulator if the kernel calls oopses.
Definition at line 88 of file system.hh.
Referenced by FreebsdArmSystem().
|
private |
Event to halt the simulator if the kernel calls panic()
Definition at line 85 of file system.hh.
Referenced by FreebsdArmSystem().
|
private |
These variables store addresses of important data structures that are normaly kept coherent at boot with cache mainetence operations.
Since these operations aren't supported in gem5, we keep them coherent by making them uncacheable until all processors in the system boot.
| std::ostream* FreebsdArmSystem::taskFile |
| std::map<uint32_t, uint32_t> FreebsdArmSystem::taskMap |
|
private |
PC based event to skip udelay(<time>) calls and quiesce the processor for the appropriate amount of time.
This is not functionally required but does speed up simulation.
Definition at line 95 of file system.hh.
Referenced by FreebsdArmSystem(), and ~FreebsdArmSystem().