Dyninst::Dwarf::DwarfFrameParser Class Reference

#include <dwarfFrameParser.h>

Public Types
typedef boost::shared_ptr < DwarfFrameParser >	Ptr
Public Member Functions
	DwarfFrameParser (Dwarf_Debug dbg_, Architecture arch)
	~DwarfFrameParser ()
bool	hasFrameDebugInfo ()
bool	getRegRepAtFrame (Address pc, MachRegister reg, VariableLocation &loc, FrameErrors_t &err_result)
bool	getRegValueAtFrame (Address pc, MachRegister reg, MachRegisterVal &reg_result, ProcessReader *reader, FrameErrors_t &err_result)
bool	getRegAtFrame (Address pc, MachRegister reg, DwarfResult &cons, FrameErrors_t &err_result)
bool	getRegsForFunction (Address entryPC, MachRegister reg, std::vector< VariableLocation > &locs, FrameErrors_t &err_result)
Static Public Member Functions
static Ptr	create (Dwarf_Debug dbg, Architecture arch)
Private Types
enum	dwarf_status_t { dwarf_status_uninitialized, dwarf_status_error, dwarf_status_ok }
Private Member Functions
bool	getRegAtFrame_aux (Address pc, Dwarf_Fde fde, Dwarf_Half dwarf_reg, MachRegister orig_reg, DwarfResult &cons, Address &lowpc, FrameErrors_t &err_result)
bool	getFDE (Address pc, Dwarf_Fde &fde, Address &low, Address &high, FrameErrors_t &err_result)
bool	getDwarfReg (MachRegister reg, Dwarf_Fde &fde, Dwarf_Half &dwarf_reg, FrameErrors_t &err_result)
bool	handleExpression (Address pc, Dwarf_Signed registerNum, MachRegister origReg, Architecture arch, DwarfResult &cons, bool &done, FrameErrors_t &err_result)
void	setupFdeData ()
Private Attributes
Dwarf_Debug	dbg
Architecture	arch
dwarf_status_t	fde_dwarf_status
std::vector< fde_cie_data >	fde_data
Static Private Attributes
static std::map< Dwarf_Debug, Ptr >	frameParsers

Detailed Description

Definition at line 63 of file dwarfFrameParser.h.

Member Typedef Documentation

typedef boost::shared_ptr<DwarfFrameParser> Dyninst::Dwarf::DwarfFrameParser::Ptr

Definition at line 66 of file dwarfFrameParser.h.

Member Enumeration Documentation

enum Dyninst::Dwarf::DwarfFrameParser::dwarf_status_t [private]

Enumerator:

dwarf_status_uninitialized
dwarf_status_error
dwarf_status_ok

Definition at line 132 of file dwarfFrameParser.h.

Constructor & Destructor Documentation

DwarfFrameParser::DwarfFrameParser	(	Dwarf_Debug	dbg_,
		Architecture	arch
	)

Definition at line 61 of file dwarfFrameParser.C.

Referenced by create().

DwarfFrameParser::~DwarfFrameParser ( )

Definition at line 68 of file dwarfFrameParser.C.

References dbg, dwarf_status_ok, fde_data, and fde_dwarf_status.

Member Function Documentation

DwarfFrameParser::Ptr DwarfFrameParser::create	(	Dwarf_Debug	dbg,
		Architecture	arch
	)			`[static]`

Definition at line 47 of file dwarfFrameParser.C.

References DwarfFrameParser(), and frameParsers.

Referenced by Dyninst::SymtabAPI::Function::expandLocation(), Dyninst::Dwarf::DwarfHandle::init_dbg(), and Dyninst::Dwarf::ConcreteDwarfResult::pushCFA().

bool DwarfFrameParser::getDwarfReg	(	Dyninst::MachRegister	reg,
		Dwarf_Fde &	fde,
		Dwarf_Half &	dwarf_reg,
		FrameErrors_t &	err_result
	)			`[private]`

We should be getting the return address for the stack frame. This is treated as a virtual register in the FDE. We can look up the virtual register in the CIE.

Definition at line 453 of file dwarfFrameParser.C.

References DW_FRAME_CFA_COL3, Dyninst::Dwarf::FE_Bad_Frame_Data, and Dyninst::MachRegister::getDwarfEnc().

Referenced by getRegAtFrame(), and getRegsForFunction().

bool DwarfFrameParser::getFDE	(	Address	pc,
		Dwarf_Fde &	fde,
		Address &	low,
		Address &	high,
		FrameErrors_t &	err_result
	)			`[private]`

Definition at line 416 of file dwarfFrameParser.C.

References dwarf_printf, fde_data, Dyninst::Dwarf::FE_Bad_Frame_Data, and Dyninst::Dwarf::FE_No_Frame_Entry.

Referenced by getRegAtFrame(), and getRegsForFunction().

bool DwarfFrameParser::getRegAtFrame	(	Address	pc,
		Dyninst::MachRegister	reg,
		DwarfResult &	cons,
		FrameErrors_t &	err_result
	)

Initialize the FDE and CIE data. This is only really done once, after which setupFdeData will immediately return.

Get the FDE at this PC. The FDE contains the rules for getting registers at the given PC in this frame.

Definition at line 203 of file dwarfFrameParser.C.

References dwarf_printf, fde_data, Dyninst::Dwarf::FE_Bad_Frame_Data, Dyninst::Dwarf::FE_No_Error, getDwarfReg(), getFDE(), getRegAtFrame_aux(), Dyninst::MachRegister::name(), and setupFdeData().

Referenced by getRegRepAtFrame(), getRegValueAtFrame(), and handleExpression().

bool DwarfFrameParser::getRegAtFrame_aux	(	Address	pc,
		Dwarf_Fde	fde,
		Dwarf_Half	dwarf_reg,
		MachRegister	orig_reg,
		DwarfResult &	cons,
		Address &	lowpc,
		FrameErrors_t &	err_result
	)			`[private]`

Decode the rule that describes how to get dwarf_reg at pc.

Interpret the rule and turn it into a real value.

Definition at line 246 of file dwarfFrameParser.C.

References Dyninst::Dwarf::DwarfResult::Add, arch, dbg, Dyninst::Dwarf::decodeDwarfExpression(), Dyninst::Dwarf::DwarfResult::Deref, DW_FRAME_CFA_COL3, dwarf_get_fde_info_for_cfa_reg3(), dwarf_printf, Dyninst::Dwarf::FE_Bad_Frame_Data, Dyninst::Dwarf::FE_Frame_Eval_Error, Dyninst::Dwarf::FE_Frame_Read_Error, Dyninst::Dwarf::FE_No_Error, Dyninst::getArchAddressWidth(), handleExpression(), Dyninst::Dwarf::DwarfResult::pushOp(), and Dyninst::Dwarf::DwarfResult::pushSignedVal().

Referenced by getRegAtFrame(), and getRegsForFunction().

bool DwarfFrameParser::getRegRepAtFrame	(	Address	pc,
		Dyninst::MachRegister	reg,
		VariableLocation &	loc,
		FrameErrors_t &	err_result
	)

Definition at line 113 of file dwarfFrameParser.C.

References arch, dwarf_printf, Dyninst::Dwarf::DwarfResult::err(), Dyninst::Dwarf::FE_Frame_Eval_Error, Dyninst::Dwarf::FE_No_Error, getRegAtFrame(), Dyninst::MachRegister::name(), and Dyninst::Dwarf::SymbolicDwarfResult::val().

bool DwarfFrameParser::getRegsForFunction	(	Address	entryPC,
		Dyninst::MachRegister	reg,
		std::vector< VariableLocation > &	locs,
		FrameErrors_t &	err_result
	)

Initialize the FDE and CIE data. This is only really done once, after which setupFdeData will immediately return.

Get the FDE at this PC. The FDE contains the rules for getting registers at the given PC in this frame.

Definition at line 141 of file dwarfFrameParser.C.

References arch, dwarf_printf, fde_data, Dyninst::Dwarf::FE_Bad_Frame_Data, Dyninst::Dwarf::FE_No_Error, getDwarfReg(), getFDE(), getRegAtFrame_aux(), Dyninst::MachRegister::name(), setupFdeData(), and Dyninst::Dwarf::SymbolicDwarfResult::val().

bool DwarfFrameParser::getRegValueAtFrame	(	Address	pc,
		Dyninst::MachRegister	reg,
		Dyninst::MachRegisterVal &	reg_result,
		ProcessReader *	reader,
		FrameErrors_t &	err_result
	)

Definition at line 86 of file dwarfFrameParser.C.

References arch, dbg, dwarf_printf, Dyninst::Dwarf::DwarfResult::err(), Dyninst::Dwarf::FE_Frame_Eval_Error, Dyninst::Dwarf::FE_No_Error, getRegAtFrame(), Dyninst::MachRegister::name(), and Dyninst::Dwarf::ConcreteDwarfResult::val().

bool DwarfFrameParser::handleExpression	(	Address	pc,
		Dwarf_Signed	registerNum,
		Dyninst::MachRegister	origReg,
		Dyninst::Architecture	arch,
		DwarfResult &	cons,
		bool &	done,
		FrameErrors_t &	err_result
	)			`[private]`