ArmSemihosting Class Reference

Semihosting for AArch32 and AArch64. More...

#include <semihosting.hh>

Inheritance diagram for ArmSemihosting:

Classes
struct	Abi32
struct	Abi64
struct	AbiBase
class	File
class	FileBase
	Internal state for open files. More...
class	FileFeatures
	Implementation of the ':semihosting-features' magic file. More...
struct	InPlaceArg
struct	SemiCall
	Semihosting call information structure. More...

Public Types
enum	{ T32Imm = 0xAB, A32Imm = 0x123456, A64Imm = 0xF000, Gem5Imm = 0x5D57 }
enum	Operation {   SYS_OPEN = 0x01, SYS_CLOSE = 0x02, SYS_WRITEC = 0x03, SYS_WRITE0 = 0x04,   SYS_WRITE = 0x05, SYS_READ = 0x06, SYS_READC = 0x07, SYS_ISERROR = 0x08,   SYS_ISTTY = 0x09, SYS_SEEK = 0x0A, SYS_FLEN = 0x0C, SYS_TMPNAM = 0x0D,   SYS_REMOVE = 0x0E, SYS_RENAME = 0x0F, SYS_CLOCK = 0x10, SYS_TIME = 0x11,   SYS_SYSTEM = 0x12, SYS_ERRNO = 0x13, SYS_GET_CMDLINE = 0x15, SYS_HEAPINFO = 0x16,   SYS_EXIT = 0x18, SYS_EXIT_EXTENDED = 0x20, SYS_ELAPSED = 0x30, SYS_TICKFREQ = 0x31,   MaxStandardOp = 0xFF, SYS_GEM5_PSEUDO_OP = 0x100 }
typedef std::pair< uint64_t, SemiErrno >	RetErrno
Public Types inherited from SimObject
typedef SimObjectParams	Params

Public Member Functions
	ArmSemihosting (const ArmSemihostingParams *p)
bool	call64 (ThreadContext *tc, bool gem5_ops)
	Perform an Arm Semihosting call from aarch64 code. More...
bool	call32 (ThreadContext *tc, bool gem5_ops)
	Perform an Arm Semihosting call from aarch32 code. More...
void	serialize (CheckpointOut &cp) const override
	Serialize an object. More...
void	unserialize (CheckpointIn &cp) override
	Unserialize an object. More...
Public Member Functions inherited from SimObject
const Params *	params () const
	SimObject (const Params *_params)
virtual	~SimObject ()
virtual const std::string	name () const
virtual void	init ()
	init() is called after all C++ SimObjects have been created and all ports are connected. More...
virtual void	loadState (CheckpointIn &cp)
	loadState() is called on each SimObject when restoring from a checkpoint. More...
virtual void	initState ()
	initState() is called on each SimObject when not restoring from a checkpoint. 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...
virtual Port &	getPort (const std::string &if_name, PortID idx=InvalidPortID)
	Get a port with a given name and index. More...
virtual void	startup ()
	startup() is the final initialization call before simulation. 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...
void	serialize (CheckpointOut &cp) const override
	Serialize an object. More...
void	unserialize (CheckpointIn &cp) override
	Unserialize an object. More...
Public Member Functions inherited from EventManager
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)
	This function is not needed by the usual gem5 event loop but may be necessary in derived EventQueues which host gem5 on other schedulers. More...
void	setCurTick (Tick newVal)
	EventManager (EventManager &em)
	Event manger manages events in the event queue. More...
	EventManager (EventManager *em)
	EventManager (EventQueue *eq)
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 Stats::Group
	Group (Group *parent, const char *name=nullptr)
	Construct a new statistics group. More...
virtual	~Group ()
virtual void	regStats ()
	Callback to set stat parameters. More...
virtual void	resetStats ()
	Callback to reset stats. More...
virtual void	preDumpStats ()
	Callback before stats are dumped. More...
void	addStat (Stats::Info *info)
	Register a stat with this group. More...
const std::map< std::string, Group * > &	getStatGroups () const
	Get all child groups associated with this object. More...
const std::vector< Info * > &	getStats () const
	Get all stats associated with this object. More...
void	addStatGroup (const char *name, Group *block)
	Add a stat block as a child of this block. More...
const Info *	resolveStat (std::string name) const
	Resolve a stat by its name within this group. More...
	Group ()=delete
	Group (const Group &)=delete
Group &	operator= (const Group &)=delete

Static Public Member Functions
static PortProxy &	portProxy (ThreadContext *tc)
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 ()
	Gets the fully-qualified name of the active section. More...
static void	serializeAll (const std::string &cpt_dir)
	Serializes all the SimObjects. More...
static void	unserializeGlobals (CheckpointIn &cp)

Protected Types
typedef uint64_t	SemiErrno
using	Handle = size_t

Protected Member Functions
unsigned	calcTickShift () const
uint64_t	semiTick (Tick tick) const
void	semiExit (uint64_t code, uint64_t subcode)
std::string	readString (ThreadContext *tc, Addr ptr, size_t len)
Protected Member Functions inherited from Drainable
	Drainable ()
virtual	~Drainable ()
virtual void	drainResume ()
	Resume execution after a successful drain. More...
void	signalDrainDone () const
	Signal that an object is drained. More...

Protected Attributes
const std::string	cmdLine
const Addr	memReserve
const Addr	stackSize
const time_t	timeBase
	Base time when the simulation started. More...
const unsigned	tickShift
	Number of bits to right shift gem5 ticks to fit in a uint32_t. More...
SemiErrno	semiErrno
std::string	filesRootDir
std::vector< std::unique_ptr< FileBase > >	files
FILE *	stdin
FILE *	stdout
FILE *	stderr
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...

Private Member Functions
RetErrno	callOpen (ThreadContext *tc, const Addr name_base, int fmode, size_t name_size)
RetErrno	callClose (ThreadContext *tc, Handle handle)
RetErrno	callWriteC (ThreadContext *tc, InPlaceArg c)
RetErrno	callWrite0 (ThreadContext *tc, InPlaceArg str)
RetErrno	callWrite (ThreadContext *tc, Handle handle, Addr buffer, size_t size)
RetErrno	callRead (ThreadContext *tc, Handle handle, Addr buffer, size_t size)
RetErrno	callReadC (ThreadContext *tc)
RetErrno	callIsError (ThreadContext *tc, int64_t status)
RetErrno	callIsTTY (ThreadContext *tc, Handle handle)
RetErrno	callSeek (ThreadContext *tc, Handle handle, uint64_t pos)
RetErrno	callFLen (ThreadContext *tc, Handle handle)
RetErrno	callTmpNam (ThreadContext *tc, Addr buffer, uint64_t id, size_t size)
RetErrno	callRemove (ThreadContext *tc, Addr name_base, size_t name_size)
RetErrno	callRename (ThreadContext *tc, Addr from_addr, size_t from_size, Addr to_addr, size_t to_size)
RetErrno	callClock (ThreadContext *tc)
RetErrno	callTime (ThreadContext *tc)
RetErrno	callSystem (ThreadContext *tc, Addr cmd_addr, size_t cmd_size)
RetErrno	callErrno (ThreadContext *tc)
RetErrno	callGetCmdLine (ThreadContext *tc, Addr addr, InPlaceArg size_arg)
void	gatherHeapInfo (ThreadContext *tc, bool aarch64, Addr &heap_base, Addr &heap_limit, Addr &stack_base, Addr &stack_limit)
RetErrno	callHeapInfo32 (ThreadContext *tc, Addr block_addr)
RetErrno	callHeapInfo64 (ThreadContext *tc, Addr block_addr)
RetErrno	callExit32 (ThreadContext *tc, InPlaceArg code)
RetErrno	callExit64 (ThreadContext *tc, uint64_t code, uint64_t subcode)
RetErrno	callExitExtended (ThreadContext *tc, uint64_t code, uint64_t subcode)
RetErrno	callElapsed32 (ThreadContext *tc, InPlaceArg low, InPlaceArg high)
RetErrno	callElapsed64 (ThreadContext *tc, InPlaceArg ticks)
RetErrno	callTickFreq (ThreadContext *tc)
RetErrno	callGem5PseudoOp32 (ThreadContext *tc, uint32_t encoded_func)
RetErrno	callGem5PseudoOp64 (ThreadContext *tc, uint64_t encoded_func)
template<typename Abi >
void	unrecognizedCall (ThreadContext *tc, const char *format, uint64_t op)

Static Private Member Functions
static RetErrno	retError (SemiErrno e)
static RetErrno	retOK (uint64_t r)
static FILE *	getSTDIO (const char *stream_name, const std::string &name, const char *mode)

Static Private Attributes
static const std::map< uint32_t, SemiCall >	calls
static const std::vector< const char * >	fmodes
static const std::map< uint64_t, const char * >	exitCodes
static const std::vector< uint8_t >	features
static const std::map< const std::string, FILE * >	stdioMap

Detailed Description

Semihosting for AArch32 and AArch64.

This class implements the Arm semihosting interface. This interface allows baremetal code access service, such as IO, from the simulator. It is conceptually a simplified version of gem5's more general syscall emulation mode.

Exits calls (SYS_EXIT, SYS_EXIT_EXTENDED) from the guest get translated into simualtion exits. Well-known exit codes are translated to messages on the form 'semi:ADP_.*' while unknown codes are returned in hex ('semi:0x..'). The subcode is reported in the gem5 exit event.

Definition at line 72 of file semihosting.hh.

Member Typedef Documentation

Handle

using ArmSemihosting::Handle = size_t

protected

Definition at line 403 of file semihosting.hh.

RetErrno

typedef std::pair<uint64_t, SemiErrno> ArmSemihosting::RetErrno

Definition at line 424 of file semihosting.hh.

SemiErrno

typedef uint64_t ArmSemihosting::SemiErrno

protected

Definition at line 253 of file semihosting.hh.

Member Enumeration Documentation

anonymous enum

anonymous enum

Enumerator
T32Imm
A32Imm
A64Imm
Gem5Imm

Definition at line 76 of file semihosting.hh.

Operation

enum ArmSemihosting::Operation

Enumerator
SYS_OPEN
SYS_CLOSE
SYS_WRITEC
SYS_WRITE0
SYS_WRITE
SYS_READ
SYS_READC
SYS_ISERROR
SYS_ISTTY
SYS_SEEK
SYS_FLEN
SYS_TMPNAM
SYS_REMOVE
SYS_RENAME
SYS_CLOCK
SYS_TIME
SYS_SYSTEM
SYS_ERRNO
SYS_GET_CMDLINE
SYS_HEAPINFO
SYS_EXIT
SYS_EXIT_EXTENDED
SYS_ELAPSED
SYS_TICKFREQ
MaxStandardOp
SYS_GEM5_PSEUDO_OP

Definition at line 196 of file semihosting.hh.

Constructor & Destructor Documentation

ArmSemihosting()

ArmSemihosting::ArmSemihosting

(

const ArmSemihostingParams *

p

)

Definition at line 137 of file semihosting.cc.

References mkutctime(), MipsISA::p, and ArmISA::t.

Member Function Documentation

calcTickShift()

unsigned ArmSemihosting::calcTickShift ( ) const

inlineprotected

Definition at line 410 of file semihosting.hh.

References findMsbSet(), and SimClock::Frequency.

call32()

bool ArmSemihosting::call32	(	ThreadContext *	tc,
		bool	gem5_ops
	)

Perform an Arm Semihosting call from aarch32 code.

Definition at line 189 of file semihosting.cc.

References ArmSemihosting::SemiCall::call32, calls, DPRINTF, ArmSemihosting::SemiCall::dump32, ArmISA::err, ArmISA::INTREG_R0, MaxStandardOp, X86ISA::op, ThreadContext::readIntReg(), and semiErrno.

Referenced by ArmSystem::callSemihosting32().

call64()

bool ArmSemihosting::call64	(	ThreadContext *	tc,
		bool	gem5_ops
	)

Perform an Arm Semihosting call from aarch64 code.

Definition at line 163 of file semihosting.cc.

References ArmSemihosting::SemiCall::call64, calls, DPRINTF, ArmSemihosting::SemiCall::dump64, ArmISA::err, ArmISA::INTREG_X0, ArmISA::mask, MaxStandardOp, X86ISA::op, ThreadContext::readIntReg(), and semiErrno.

Referenced by ArmSystem::callSemihosting64().

callClock()

ArmSemihosting::RetErrno ArmSemihosting::callClock ( ThreadContext *  tc )

private

Definition at line 492 of file semihosting.cc.

References curTick(), retOK(), and SimClock::Int::s.

callClose()

ArmSemihosting::RetErrno ArmSemihosting::callClose ( ThreadContext *  tc, Handle  handle  )

private

Definition at line 308 of file semihosting.cc.

References DPRINTF, files, retError(), and retOK().

callElapsed32()

ArmSemihosting::RetErrno ArmSemihosting::callElapsed32 ( ThreadContext *  tc, InPlaceArg  low, InPlaceArg  high  )

private

Definition at line 642 of file semihosting.cc.

References ArmISA::byteOrder(), curTick(), retOK(), semiTick(), and ArmSemihosting::InPlaceArg::write().

callElapsed64()

ArmSemihosting::RetErrno ArmSemihosting::callElapsed64 ( ThreadContext *  tc, InPlaceArg  ticks  )

private

Definition at line 656 of file semihosting.cc.

References ArmISA::byteOrder(), curTick(), retOK(), semiTick(), and ArmSemihosting::InPlaceArg::write().

callErrno()

ArmSemihosting::RetErrno ArmSemihosting::callErrno ( ThreadContext *  tc )

private

Definition at line 514 of file semihosting.cc.

References semiErrno.

callExit32()

ArmSemihosting::RetErrno ArmSemihosting::callExit32 ( ThreadContext *  tc, InPlaceArg  code  )

private

Definition at line 608 of file semihosting.cc.

References ArmSemihosting::InPlaceArg::addr, retOK(), and semiExit().

callExit64()

ArmSemihosting::RetErrno ArmSemihosting::callExit64 ( ThreadContext *  tc, uint64_t  code, uint64_t  subcode  )

private

Definition at line 615 of file semihosting.cc.

References retOK(), and semiExit().

callExitExtended()

ArmSemihosting::RetErrno ArmSemihosting::callExitExtended ( ThreadContext *  tc, uint64_t  code, uint64_t  subcode  )

private

Definition at line 622 of file semihosting.cc.

References retOK(), and semiExit().

callFLen()

ArmSemihosting::RetErrno ArmSemihosting::callFLen ( ThreadContext *  tc, Handle  handle  )

private

Definition at line 435 of file semihosting.cc.

References files, retError(), and retOK().

callGem5PseudoOp32()

ArmSemihosting::RetErrno ArmSemihosting::callGem5PseudoOp32 ( ThreadContext *  tc, uint32_t  encoded_func  )

private

Definition at line 713 of file semihosting.cc.

References PseudoInst::decodeAddrOffset(), retError(), and retOK().

callGem5PseudoOp64()

ArmSemihosting::RetErrno ArmSemihosting::callGem5PseudoOp64 ( ThreadContext *  tc, uint64_t  encoded_func  )

private

Definition at line 726 of file semihosting.cc.

References PseudoInst::decodeAddrOffset(), retError(), and retOK().

callGetCmdLine()

ArmSemihosting::RetErrno ArmSemihosting::callGetCmdLine ( ThreadContext *  tc, Addr  addr, InPlaceArg  size_arg  )

private

Definition at line 521 of file semihosting.cc.

References addr, ArmISA::byteOrder(), cmdLine, portProxy(), ArmSemihosting::InPlaceArg::read(), retError(), retOK(), ArmSemihosting::InPlaceArg::write(), and PortProxy::writeBlob().

callHeapInfo32()

ArmSemihosting::RetErrno ArmSemihosting::callHeapInfo32 ( ThreadContext *  tc, Addr  block_addr  )

private

Definition at line 579 of file semihosting.cc.

References ArmISA::byteOrder(), gatherHeapInfo(), portProxy(), retOK(), and PortProxy::write().

callHeapInfo64()

ArmSemihosting::RetErrno ArmSemihosting::callHeapInfo64 ( ThreadContext *  tc, Addr  block_addr  )

private

Definition at line 594 of file semihosting.cc.

References ArmISA::byteOrder(), gatherHeapInfo(), portProxy(), retOK(), and PortProxy::write().

callIsError()

ArmSemihosting::RetErrno ArmSemihosting::callIsError ( ThreadContext *  tc, int64_t  status  )

private

Definition at line 401 of file semihosting.cc.

References retOK(), and ArmISA::status.

callIsTTY()

ArmSemihosting::RetErrno ArmSemihosting::callIsTTY ( ThreadContext *  tc, Handle  handle  )

private

Definition at line 407 of file semihosting.cc.

References files, retError(), and retOK().

callOpen()

ArmSemihosting::RetErrno ArmSemihosting::callOpen ( ThreadContext *  tc, const Addr  name_base, int  fmode, size_t  name_size  )

private

Definition at line 280 of file semihosting.cc.

References ArmSemihosting::FileBase::create(), DPRINTF, files, filesRootDir, fmodes, ArmISA::mode, readString(), retError(), and retOK().

callRead()

ArmSemihosting::RetErrno ArmSemihosting::callRead ( ThreadContext *  tc, Handle  handle, Addr  buffer, size_t  size  )

private

Definition at line 374 of file semihosting.cc.

References addr, files, panic_if, portProxy(), retOK(), and PortProxy::writeBlob().

callReadC()

ArmSemihosting::RetErrno ArmSemihosting::callReadC ( ThreadContext *  tc )

private

Definition at line 395 of file semihosting.cc.

References retOK().

callRemove()

ArmSemihosting::RetErrno ArmSemihosting::callRemove ( ThreadContext *  tc, Addr  name_base, size_t  name_size  )

private

Definition at line 466 of file semihosting.cc.

References readString(), retError(), and retOK().

callRename()

ArmSemihosting::RetErrno ArmSemihosting::callRename ( ThreadContext *  tc, Addr  from_addr, size_t  from_size, Addr  to_addr, size_t  to_size  )

private

Definition at line 478 of file semihosting.cc.

References readString(), retError(), and retOK().

callSeek()

ArmSemihosting::RetErrno ArmSemihosting::callSeek ( ThreadContext *  tc, Handle  handle, uint64_t  pos  )

private

Definition at line 421 of file semihosting.cc.

References files, retError(), and retOK().

callSystem()

ArmSemihosting::RetErrno ArmSemihosting::callSystem ( ThreadContext *  tc, Addr  cmd_addr, size_t  cmd_size  )

private

Definition at line 504 of file semihosting.cc.

References readString(), retError(), and warn.

callTickFreq()

ArmSemihosting::RetErrno ArmSemihosting::callTickFreq ( ThreadContext *  tc )

private

Definition at line 664 of file semihosting.cc.

References SimClock::Frequency, retOK(), and semiTick().

callTime()

ArmSemihosting::RetErrno ArmSemihosting::callTime ( ThreadContext *  tc )

private

Definition at line 498 of file semihosting.cc.

References curTick(), retOK(), SimClock::Float::s, and timeBase.

callTmpNam()

ArmSemihosting::RetErrno ArmSemihosting::callTmpNam ( ThreadContext *  tc, Addr  buffer, uint64_t  id, size_t  size  )

private

Definition at line 449 of file semihosting.cc.

References addr, Serializable::path, portProxy(), retError(), retOK(), and PortProxy::writeBlob().

callWrite()

ArmSemihosting::RetErrno ArmSemihosting::callWrite ( ThreadContext *  tc, Handle  handle, Addr  buffer, size_t  size  )

private

Definition at line 353 of file semihosting.cc.

References addr, files, portProxy(), and PortProxy::readBlob().

callWrite0()

ArmSemihosting::RetErrno ArmSemihosting::callWrite0 ( ThreadContext *  tc, InPlaceArg  str  )

private

Definition at line 341 of file semihosting.cc.

References ArmSemihosting::InPlaceArg::addr, DPRINTF, portProxy(), PortProxy::readString(), and retOK().

callWriteC()

ArmSemihosting::RetErrno ArmSemihosting::callWriteC ( ThreadContext *  tc, InPlaceArg  c  )

private

Definition at line 330 of file semihosting.cc.

References ArmSemihosting::InPlaceArg::addr, ArmISA::c, DPRINTF, portProxy(), PortProxy::read(), and retOK().

gatherHeapInfo()

void ArmSemihosting::gatherHeapInfo ( ThreadContext *  tc, bool  aarch64, Addr &  heap_base, Addr &  heap_limit, Addr &  stack_base, Addr &  stack_limit  )

private

Definition at line 538 of file semihosting.cc.

References ArmISA::aarch64, fatal_if, PhysicalMemory::getConfAddrRanges(), System::getPhysMem(), ThreadContext::getSystemPtr(), inform, memReserve, panic_if, stackSize, ULL, warn, and warn_if.

Referenced by callHeapInfo32(), and callHeapInfo64().

getSTDIO()

FILE * ArmSemihosting::getSTDIO ( const char *  stream_name, const std::string &  name, const char *  mode  )

staticprivate

Definition at line 739 of file semihosting.cc.

References ArmISA::f, fatal, ArmISA::mode, SimObject::name(), and stdioMap.

portProxy()

PortProxy & ArmSemihosting::portProxy ( ThreadContext *  tc )

static

Definition at line 242 of file semihosting.cc.

References FullSystem, ThreadContext::getSystemPtr(), ThreadContext::getVirtProxy(), ArmISA::isSecure(), SETranslatingPortProxy::NextPage, and Request::SECURE.

Referenced by callGetCmdLine(), callHeapInfo32(), callHeapInfo64(), callRead(), callTmpNam(), callWrite(), callWrite0(), callWriteC(), ArmSemihosting::AbiBase::StateBase< Arg >::get(), ArmSemihosting::InPlaceArg::read(), readString(), and ArmSemihosting::InPlaceArg::write().

readString()

std::string ArmSemihosting::readString ( ThreadContext *  tc, Addr  ptr, size_t  len  )

protected

Definition at line 269 of file semihosting.cc.

References ArmISA::len, portProxy(), and PortProxy::readBlob().

Referenced by callOpen(), callRemove(), callRename(), and callSystem().

retError()

static RetErrno ArmSemihosting::retError ( SemiErrno  e )

inlinestaticprivate

Definition at line 428 of file semihosting.hh.

References ArmISA::e.

Referenced by callClose(), callFLen(), callGem5PseudoOp32(), callGem5PseudoOp64(), callGetCmdLine(), callIsTTY(), callOpen(), callRemove(), callRename(), callSeek(), callSystem(), callTmpNam(), and unrecognizedCall().

retOK()

static RetErrno ArmSemihosting::retOK ( uint64_t  r )

inlinestaticprivate

Definition at line 434 of file semihosting.hh.

References MipsISA::r.

Referenced by callClock(), callClose(), callElapsed32(), callElapsed64(), callExit32(), callExit64(), callExitExtended(), callFLen(), callGem5PseudoOp32(), callGem5PseudoOp64(), callGetCmdLine(), callHeapInfo32(), callHeapInfo64(), callIsError(), callIsTTY(), callOpen(), callRead(), callReadC(), callRemove(), callRename(), callSeek(), callTickFreq(), callTime(), callTmpNam(), callWrite0(), and callWriteC().

semiExit()

void ArmSemihosting::semiExit ( uint64_t  code, uint64_t  subcode  )

protected

Definition at line 630 of file semihosting.cc.

References csprintf(), exitCodes, and exitSimLoop().

Referenced by callExit32(), callExit64(), and callExitExtended().

semiTick()

uint64_t ArmSemihosting::semiTick ( Tick  tick ) const

inlineprotected

Definition at line 416 of file semihosting.hh.

References tickShift.

Referenced by callElapsed32(), callElapsed64(), and callTickFreq().

serialize()

void ArmSemihosting::serialize ( CheckpointOut &  cp ) const

overridevirtual

Serialize an object.

Output an object's state into the current checkpoint section.

Parameters

cp	Checkpoint state

Implements Serializable.

Definition at line 215 of file semihosting.cc.

References csprintf(), files, ArmISA::i, paramOut(), semiErrno, and SERIALIZE_SCALAR.

unrecognizedCall()

template<typename Abi >

void ArmSemihosting::unrecognizedCall ( ThreadContext *  tc, const char *  format, uint64_t  op  )

inlineprivate

Definition at line 568 of file semihosting.hh.

References ArmISA::format, X86ISA::op, retError(), and warn.

unserialize()

void ArmSemihosting::unserialize ( CheckpointIn &  cp )

overridevirtual

Unserialize an object.

Read an object's state from the current checkpoint section.

Parameters

cp	Checkpoint state

Implements Serializable.

Definition at line 230 of file semihosting.cc.

References ArmSemihosting::FileBase::create(), csprintf(), files, ArmISA::i, paramIn(), semiErrno, and UNSERIALIZE_SCALAR.

Member Data Documentation

calls

const std::map< uint32_t, ArmSemihosting::SemiCall > ArmSemihosting::calls

staticprivate

Definition at line 579 of file semihosting.hh.

Referenced by call32(), and call64().

cmdLine

const std::string ArmSemihosting::cmdLine

protected

Definition at line 239 of file semihosting.hh.

Referenced by callGetCmdLine().

exitCodes

const std::map< uint64_t, const char * > ArmSemihosting::exitCodes

staticprivate

Initial value:

{
    { 0x20000, "semi:ADP_Stopped_BranchThroughZero" },
    { 0x20001, "semi:ADP_Stopped_UndefinedInstr" },
    { 0x20002, "semi:ADP_Stopped_SoftwareInterrupt" },
    { 0x20003, "semi:ADP_Stopped_PrefetchAbort" },
    { 0x20004, "semi:ADP_Stopped_DataAbort" },
    { 0x20005, "semi:ADP_Stopped_AddressException" },
    { 0x20006, "semi:ADP_Stopped_IRQ" },
    { 0x20007, "semi:ADP_Stopped_FIQ" },
 
    { 0x20020, "semi:ADP_Stopped_BreakPoint" },
    { 0x20021, "semi:ADP_Stopped_WatchPoint" },
    { 0x20022, "semi:ADP_Stopped_StepComplete" },
    { 0x20023, "semi:ADP_Stopped_RunTimeErrorUnknown" },
    { 0x20024, "semi:ADP_Stopped_InternalError" },
    { 0x20025, "semi:ADP_Stopped_UserInterruption" },
    { 0x20026, "semi:ADP_Stopped_ApplicationExit" },
    { 0x20027, "semi:ADP_Stopped_StackOverflow" },
    { 0x20028, "semi:ADP_Stopped_DivisionByZero" },
    { 0x20029, "semi:ADP_Stopped_DivisionByZero" },
}

Definition at line 581 of file semihosting.hh.

Referenced by semiExit().

features

const std::vector< uint8_t > ArmSemihosting::features

staticprivate

Initial value:

{
    0x53, 0x48, 0x46, 0x42, 
    0x3,                    
}

Definition at line 582 of file semihosting.hh.

Referenced by ArmSemihosting::FileFeatures::read(), and ArmSemihosting::FileFeatures::seek().

files

std::vector<std::unique_ptr<FileBase> > ArmSemihosting::files

protected

Definition at line 402 of file semihosting.hh.

Referenced by callClose(), callFLen(), callIsTTY(), callOpen(), callRead(), callSeek(), callWrite(), serialize(), and unserialize().

filesRootDir

std::string ArmSemihosting::filesRootDir

protected

Definition at line 401 of file semihosting.hh.

Referenced by callOpen().

fmodes

const std::vector< const char * > ArmSemihosting::fmodes

staticprivate

Initial value:

{
    "r", "rb", "r+", "r+b",
    "w", "wb", "w+", "w+b",
    "a", "ab", "a+", "a+b",
}

Definition at line 580 of file semihosting.hh.

Referenced by callOpen().

memReserve

const Addr ArmSemihosting::memReserve

protected

Definition at line 240 of file semihosting.hh.

Referenced by gatherHeapInfo().

semiErrno

SemiErrno ArmSemihosting::semiErrno

protected

Definition at line 254 of file semihosting.hh.

Referenced by call32(), call64(), callErrno(), serialize(), and unserialize().

stackSize

const Addr ArmSemihosting::stackSize

protected

Definition at line 241 of file semihosting.hh.

Referenced by gatherHeapInfo().

stderr

FILE* ArmSemihosting::stderr

protected

Definition at line 406 of file semihosting.hh.

stdin

FILE* ArmSemihosting::stdin

protected

Definition at line 404 of file semihosting.hh.

stdioMap

const std::map< const std::string, FILE * > ArmSemihosting::stdioMap

staticprivate

Initial value:

{
    {"cin",    ::stdin},
    {"stdin",  ::stdin},
    {"cout",   ::stdout},
    {"stdout", ::stdout},
    {"cerr",   ::stderr},
    {"stderr", ::stderr},
}

Definition at line 583 of file semihosting.hh.

Referenced by getSTDIO().

stdout

FILE* ArmSemihosting::stdout

protected

Definition at line 405 of file semihosting.hh.

tickShift

const unsigned ArmSemihosting::tickShift

protected

Number of bits to right shift gem5 ticks to fit in a uint32_t.

Definition at line 250 of file semihosting.hh.

Referenced by semiTick().

timeBase

const time_t ArmSemihosting::timeBase

protected

Base time when the simulation started.

This is used to calculate the time of date when the guest call SYS_TIME.

Definition at line 247 of file semihosting.hh.

Referenced by callTime().

---

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

• arch/arm/semihosting.hh
• arch/arm/semihosting.cc