llvm::FrameEntry Class Reference

Abstract frame entry defining the common interface concrete entries implement. More...

Collaboration diagram for llvm::FrameEntry:

Classes
struct	Instruction

Public Types
enum	FrameKind { FK_CIE, FK_FDE }

Public Member Functions
	FrameEntry (FrameKind K, DataExtractor D, uint64_t Offset, uint64_t Length)
virtual	~FrameEntry ()
FrameKind	getKind () const
virtual uint64_t	getOffset () const
virtual void	parseInstructions (uint32_t *Offset, uint32_t EndOffset)
	Parse and store a sequence of CFI instructions from our data stream, starting at *Offset and ending at EndOffset. If everything goes well, *Offset should be equal to EndOffset when this method returns. Otherwise, an error occurred. More...
virtual void	dumpHeader (raw_ostream &OS) const =0
	Dump the entry header to the given output stream. More...
virtual void	dumpInstructions (raw_ostream &OS) const
	Dump the entry's instructions to the given output stream. More...

Protected Types
typedef std::vector< uint64_t >	Operands

Protected Member Functions
void	addInstruction (uint8_t Opcode)
void	addInstruction (uint8_t Opcode, uint64_t Operand1)
void	addInstruction (uint8_t Opcode, uint64_t Operand1, uint64_t Operand2)

Protected Attributes
const FrameKind	Kind
DataExtractor	Data
	The data stream holding the section from which the entry was parsed. More...
uint64_t	Offset
	Offset of this entry in the section. More...
uint64_t	Length
	Entry length as specified in DWARF. More...
std::vector< Instruction >	Instructions

Detailed Description

Abstract frame entry defining the common interface concrete entries implement.

Definition at line 26 of file DWARFDebugFrame.cpp.

Member Typedef Documentation

typedef std::vector<uint64_t> llvm::FrameEntry::Operands

protected

An entry may contain CFI instructions. An instruction consists of an opcode and an optional sequence of operands.

Definition at line 65 of file DWARFDebugFrame.cpp.

Member Enumeration Documentation

enum llvm::FrameEntry::FrameKind

Enumerator
FK_CIE
FK_FDE

Definition at line 28 of file DWARFDebugFrame.cpp.

Constructor & Destructor Documentation

llvm::FrameEntry::FrameEntry ( FrameKind  K, DataExtractor  D, uint64_t  Offset, uint64_t  Length  )

inline

Definition at line 29 of file DWARFDebugFrame.cpp.

virtual llvm::FrameEntry::~FrameEntry ( )

inlinevirtual

Definition at line 32 of file DWARFDebugFrame.cpp.

Member Function Documentation

void llvm::FrameEntry::addInstruction ( uint8_t  Opcode )

inlineprotected

Convenience methods to add a new instruction with the given opcode and operands to the Instructions vector.

Definition at line 79 of file DWARFDebugFrame.cpp.

void llvm::FrameEntry::addInstruction ( uint8_t  Opcode, uint64_t  Operand1  )

inlineprotected

Definition at line 83 of file DWARFDebugFrame.cpp.

void llvm::FrameEntry::addInstruction ( uint8_t  Opcode, uint64_t  Operand1, uint64_t  Operand2  )

inlineprotected

Definition at line 88 of file DWARFDebugFrame.cpp.

virtual void llvm::FrameEntry::dumpHeader ( raw_ostream &  OS ) const

pure virtual

Dump the entry header to the given output stream.

Referenced by llvm::DWARFDebugFrame::dump().

void FrameEntry::dumpInstructions ( raw_ostream &  OS ) const

virtual

Dump the entry's instructions to the given output stream.

Definition at line 185 of file DWARFDebugFrame.cpp.

References llvm::dwarf::CallFrameString(), DWARF_CFI_PRIMARY_OPCODE_MASK, and I.

Referenced by llvm::DWARFDebugFrame::dump().

FrameKind llvm::FrameEntry::getKind ( ) const

inline

Definition at line 35 of file DWARFDebugFrame.cpp.

virtual uint64_t llvm::FrameEntry::getOffset ( ) const

inlinevirtual

Definition at line 36 of file DWARFDebugFrame.cpp.

Referenced by llvm::DWARFDebugFrame::parse().

void FrameEntry::parseInstructions ( uint32_t *  Offset, uint32_t  EndOffset  )

virtual

Parse and store a sequence of CFI instructions from our data stream, starting at *Offset and ending at EndOffset. If everything goes well, *Offset should be equal to EndOffset when this method returns. Otherwise, an error occurred.

Definition at line 101 of file DWARFDebugFrame.cpp.

References llvm::dwarf::DW_CFA_advance_loc, llvm::dwarf::DW_CFA_advance_loc1, llvm::dwarf::DW_CFA_advance_loc2, llvm::dwarf::DW_CFA_advance_loc4, llvm::dwarf::DW_CFA_def_cfa, llvm::dwarf::DW_CFA_def_cfa_expression, llvm::dwarf::DW_CFA_def_cfa_offset, llvm::dwarf::DW_CFA_def_cfa_offset_sf, llvm::dwarf::DW_CFA_def_cfa_register, llvm::dwarf::DW_CFA_def_cfa_sf, llvm::dwarf::DW_CFA_expression, llvm::dwarf::DW_CFA_nop, llvm::dwarf::DW_CFA_offset, llvm::dwarf::DW_CFA_offset_extended, llvm::dwarf::DW_CFA_offset_extended_sf, llvm::dwarf::DW_CFA_register, llvm::dwarf::DW_CFA_remember_state, llvm::dwarf::DW_CFA_restore, llvm::dwarf::DW_CFA_restore_extended, llvm::dwarf::DW_CFA_restore_state, llvm::dwarf::DW_CFA_same_value, llvm::dwarf::DW_CFA_set_loc, llvm::dwarf::DW_CFA_undefined, llvm::dwarf::DW_CFA_val_expression, llvm::dwarf::DW_CFA_val_offset, llvm::dwarf::DW_CFA_val_offset_sf, DWARF_CFI_PRIMARY_OPCODE_MASK, DWARF_CFI_PRIMARY_OPERAND_MASK, llvm_unreachable, and llvm::report_fatal_error().

Referenced by llvm::DWARFDebugFrame::parse().

Member Data Documentation

DataExtractor llvm::FrameEntry::Data

protected

The data stream holding the section from which the entry was parsed.

Definition at line 55 of file DWARFDebugFrame.cpp.

std::vector<Instruction> llvm::FrameEntry::Instructions

protected

Definition at line 75 of file DWARFDebugFrame.cpp.

const FrameKind llvm::FrameEntry::Kind

protected

Definition at line 51 of file DWARFDebugFrame.cpp.

uint64_t llvm::FrameEntry::Length

protected

Entry length as specified in DWARF.

Definition at line 61 of file DWARFDebugFrame.cpp.

uint64_t llvm::FrameEntry::Offset

protected

Offset of this entry in the section.

Definition at line 58 of file DWARFDebugFrame.cpp.

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

• DWARFDebugFrame.cpp