An indirect call site. More...

#include <Function.h>

Inheritance diagram for lldb_private::IndirectCallEdge:

Public Member Functions
Call site related structures
	IndirectCallEdge (DWARFExpressionList call_target, AddrType caller_address_type, lldb::addr_t caller_address, bool is_tail_call, CallSiteParameterArray &&parameters)
	Construct a call edge using a DWARFExpression 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`.
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.

Private Attributes
DWARFExpressionList	call_target

Additional Inherited Members
Public Types inherited from lldb_private::CallEdge
enum class	AddrType : uint8_t { Call , AfterCall }
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

An indirect call site.

Used to represent call sites where the address of the callee is not fixed, e.g. a call to a C++ virtual function (where the address is loaded out of a vtable), or a call to a function pointer in C.

Definition at line 348 of file Function.h.

Constructor & Destructor Documentation

◆ IndirectCallEdge()

IndirectCallEdge::IndirectCallEdge	(	DWARFExpressionList	call_target,
		AddrType	caller_address_type,
		lldb::addr_t	caller_address,
		bool	is_tail_call,
		CallSiteParameterArray &&	parameters )

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

Definition at line 204 of file Function.cpp.

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

Member Function Documentation

◆ GetCallee()

SymbolContext IndirectCallEdge::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 213 of file Function.cpp.

References call_target, error(), lldb_private::GetLog(), lldb_private::ExecutionContext::GetProcessPtr(), lldb_private::ExecutionContext::GetRegisterContext(), lldb_private::ExecutionContext::GetTargetPtr(), LLDB_INVALID_ADDRESS, LLDB_LOG, LLDB_LOG_ERROR, lldb_private::CallEdge::ResolveCallee(), lldb_private::Target::ResolveLoadAddress(), and lldb_private::Step.

Member Data Documentation

◆ call_target

DWARFExpressionList lldb_private::IndirectCallEdge::call_target

private

Definition at line 363 of file Function.h.

Referenced by GetCallee(), and IndirectCallEdge().

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

Public Member Functions

Private Attributes