A direct call site. More...

#include <Function.h>

Inheritance diagram for lldb_private::DirectCallEdge:

Private Attributes
const char *	m_symbol_name

Call site related structures
	DirectCallEdge (const char *symbol_name, AddrType caller_address_type, lldb::addr_t caller_address, bool is_tail_call, CallSiteParameterArray &&parameters)
	Construct a call edge using a symbol name to identify the callee, and a return PC within the calling function to identify a specific call site.
SymbolContext	GetCallee (ModuleList &images, ExecutionContext &exe_ctx) override
	Get the callee's definition, resolved against `images`.
Address	ResolveCalleeAddress (ModuleList &images) const

Additional Inherited Members
Public Types inherited from lldb_private::CallEdge
enum class	AddrType : uint8_t { Call , AfterCall }
Public Member Functions inherited from lldb_private::CallEdge
std::pair< AddrType, lldb::addr_t >	GetCallerAddress (Function &caller, Target &target) const
	Return an address in the caller.
bool	IsTailCall () const
llvm::ArrayRef< CallSiteParameter >	GetCallSiteParameters () const
	Get the call site parameters available at this call edge.
std::pair< bool, lldb::addr_t >	GetSortKey () const
	Non-tail-calls go first, sorted by the return address.
virtual	~CallEdge ()
lldb::addr_t	GetReturnPCAddress (Function &caller, Target &target) const
	Get the load PC address of the instruction which executes after the call returns.
Protected Member Functions inherited from lldb_private::CallEdge
lldb::addr_t	GetUnresolvedReturnPCAddress () const
	Like GetReturnPCAddress, but returns an unresolved file address.
	CallEdge (AddrType caller_address_type, lldb::addr_t caller_address, bool is_tail_call, CallSiteParameterArray &&parameters)
static lldb::addr_t	GetLoadAddress (lldb::addr_t unresolved_pc, Function &caller, Target &target)
	Helper that finds the load address of `unresolved_pc`, a file address which refers to an instruction within `caller`.
static SymbolContext	ResolveCallee (const Address &addr)
	Find the function containing `addr`.

Detailed Description

A direct call site.

Used to represent call sites where the address of the callee is fixed (e.g. a function call in C in which the call target is not a function pointer).

Definition at line 328 of file Function.h.

Constructor & Destructor Documentation

◆ DirectCallEdge()

DirectCallEdge::DirectCallEdge	(	const char *	symbol_name,
		AddrType	caller_address_type,
		lldb::addr_t	caller_address,
		bool	is_tail_call,
		CallSiteParameterArray &&	parameters )

Construct a call edge using a symbol name to identify the callee, and a return PC within the calling function to identify a specific call site.

Definition at line 191 of file Function.cpp.

References lldb_private::CallEdge::CallEdge(), lldb_private::CallEdge::caller_address, lldb_private::CallEdge::caller_address_type, lldb_private::CallEdge::is_tail_call, m_symbol_name, and lldb_private::CallEdge::parameters.

Member Function Documentation

◆ GetCallee()

SymbolContext DirectCallEdge::GetCallee	(	ModuleList &	images,
		ExecutionContext &	exe_ctx )

overridevirtual

Get the callee's definition, resolved against images.

The result is never cached. A CallEdge is owned by a Module in the shared module cache, so it outlives any one Target, while the callee it resolves to depends on that Target's image list and dies with its own module. The returned symbol context anchors that module.

Note that this might lazily invoke the DWARF parser. A register context from the caller's activation is needed to find indirect call targets.

Implements lldb_private::CallEdge.

Definition at line 199 of file Function.cpp.

References lldb_private::CallEdge::ResolveCallee(), and ResolveCalleeAddress().

◆ ResolveCalleeAddress()

Address DirectCallEdge::ResolveCalleeAddress ( ModuleList & images ) const

private

Definition at line 164 of file Function.cpp.

References lldb_private::ModuleList::FindFunctionSymbols(), lldb_private::GetLog(), lldb_private::SymbolContextList::GetSize(), lldb_private::Address::IsValid(), LLDB_LOG, m_symbol_name, and lldb_private::Step.

Referenced by GetCallee().

Member Data Documentation

◆ m_symbol_name

const char* lldb_private::DirectCallEdge::m_symbol_name

private

Definition at line 342 of file Function.h.

Referenced by DirectCallEdge(), and ResolveCalleeAddress().

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

Private Attributes

Call site related structures

Additional Inherited Members