Inheritance diagram for fd_entry:

Public Member Functions
	fd_entry ()

	fd_entry (const eh_frame_t &eh_frame)

	fd_entry (const eh_frame_t &eh_frame, void *addr)

	~fd_entry () override=default

	fd_entry (fd_entry &&) noexcept=default

	fd_entry (const fd_entry &)=default

fd_entry &	operator= (fd_entry &&) noexcept=default

fd_entry &	operator= (const fd_entry &)=default

bool	is_in_range (uint64_t pc) const

uint64_t	pc_begin () const

uint64_t	pc_range () const

uint64_t	lsda () const

char *	instructions () const

const ci_entry &	cie () const

Public Member Functions inherited from common_entry
	common_entry ()

	common_entry (const eh_frame_t &eh_frame)

virtual	~common_entry ()=default

	common_entry (common_entry &&) noexcept=default

	common_entry (const common_entry &)=default

common_entry &	operator= (common_entry &&) noexcept=default

common_entry &	operator= (const common_entry &)=default

common_entry &	operator++ ()

	operator bool () const

bool	is_cie () const

bool	is_fde () const

char *	entry_start () const

char *	entry_end () const

char *	payload_start () const

char *	payload_end () const

eh_frame_t	eh_frame () const

Protected Member Functions
void	parse (char *addr) override

void	non_virtual_parse (char *addr)

Protected Member Functions inherited from common_entry
void	non_virtual_parse (char *addr)

Additional Inherited Members
Protected Attributes inherited from common_entry
bool	m_is_cie

char *	m_entry_start

char *	m_entry_end

char *	m_payload_start

char *	m_payload_end

eh_frame_t	m_eh_frame

Detailed Description

Frame Description Entry

The FDE provides all of the instructions for restoring the state of the registers when unwinding the stack. There is one FDE for each call frame that is created by the compiler (which is usually a function, but can include more than just functions in practice).

Definition at line 510 of file eh_frame.h.

Constructor & Destructor Documentation

◆ fd_entry() [1/5]

fd_entry::fd_entry ( )

Default Constructor

Creates an invalid FDE

Definition at line 320 of file eh_frame.cpp.

◆ fd_entry() [2/5]

fd_entry::fd_entry ( const eh_frame_t & eh_frame )

explicit

Constructor

Creates an invalid FDE, but stores the location of the beginning of the .eh_frame section.

Definition at line 328 of file eh_frame.cpp.

◆ fd_entry() [3/5]

fd_entry::fd_entry	(	const eh_frame_t &	eh_frame,
		void *	addr
	)

explicit

Constructor

Creates a valid FDE if the addr that is provided points to a valid FDE in the .eh_frame provided

Definition at line 339 of file eh_frame.cpp.

◆ ~fd_entry()

fd_entry::~fd_entry ( )

overridedefault

Destructor

◆ fd_entry() [4/5]

fd_entry::fd_entry ( fd_entry && )

defaultnoexcept

Default Move Constructor

◆ fd_entry() [5/5]

fd_entry::fd_entry ( const fd_entry & )

default

Default Copy Constructor

Member Function Documentation

◆ operator=() [1/2]

fd_entry& fd_entry::operator= ( fd_entry && )

defaultnoexcept

Default Move Assignment Operator

◆ operator=() [2/2]

fd_entry& fd_entry::operator= ( const fd_entry & )

default

Default Copy Assignment Operator

◆ is_in_range()

bool fd_entry::is_in_range ( uint64_t pc ) const

inline

Is PC In Range

Note: the range for the PC is not 0 indexed (fails if you attempt to code this as >= && < instead of > && <=). The test case is a function that does nothing but throws. The compiler will emit code without an epilogue, and the range will include the address of the next instruction which is the start of another function.

Parameters

pc	the program counter (on x86_64 this is rip) to test

Returns: returns true if this FDE contains the instructions for the PC provided.

Definition at line 566 of file eh_frame.h.

◆ pc_begin()

uint64_t fd_entry::pc_begin ( ) const

inline

PC Begin

Returns: returns the beginning of the FDE's range

Definition at line 573 of file eh_frame.h.

◆ pc_range()

uint64_t fd_entry::pc_range ( ) const

inline

PC Range

Returns: returns the range of the FDE

Definition at line 580 of file eh_frame.h.

◆ lsda()

uint64_t fd_entry::lsda ( ) const

inline

LSDA Location

Returns: returns the location of the LSDA given the encoding defined in the CIE

Definition at line 588 of file eh_frame.h.

◆ instructions()

char* fd_entry::instructions ( ) const

inline

Instructions

Returns: returns the location of the DWARF instructions that define how to unwind the CFA that this FDE defines.

Definition at line 596 of file eh_frame.h.

◆ cie()

const ci_entry& fd_entry::cie ( ) const

inline

CIE

Returns: returns the CIE associated with this FDE.

Definition at line 603 of file eh_frame.h.

◆ parse()

void fd_entry::parse ( char * addr )

overrideprotectedvirtual

Implements common_entry.

Definition at line 351 of file eh_frame.cpp.

◆ non_virtual_parse()

void fd_entry::non_virtual_parse ( char * addr )

protected

Definition at line 357 of file eh_frame.cpp.

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

/home/user/hypervisor/bfunwind/include/eh_frame.h
/home/user/hypervisor/bfunwind/src/eh_frame.cpp

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ fd_entry() [1/5]

◆ fd_entry() [2/5]

◆ fd_entry() [3/5]

◆ ~fd_entry()

◆ fd_entry() [4/5]

◆ fd_entry() [5/5]

Member Function Documentation

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ is_in_range()

◆ pc_begin()

◆ pc_range()

◆ lsda()

◆ instructions()

◆ cie()

◆ parse()

◆ non_virtual_parse()