A direct call site. More...

#include <Function.h>

Inheritance diagram for lldb_private::DirectCallEdge:

Private Attributes
union {
const char * symbol_name
Function * def
}	lazy_callee
bool	resolved = false
	Whether or not an attempt was made to find the callee's definition.

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.
Function *	GetCallee (ModuleList &images, ExecutionContext &exe_ctx) override
	Get the callee's definition.
void	ParseSymbolFileAndResolve (ModuleList &images)

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`.

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 334 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 195 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, lazy_callee, lldb_private::CallEdge::parameters, and symbol_name.

Member Function Documentation

◆ GetCallee()

Function * DirectCallEdge::GetCallee	(	ModuleList &	images,
		ExecutionContext &	exe_ctx )

overridevirtual

Get the callee's definition.

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 204 of file Function.cpp.

References lazy_callee, ParseSymbolFileAndResolve(), and resolved.

◆ ParseSymbolFileAndResolve()

void DirectCallEdge::ParseSymbolFileAndResolve ( ModuleList & images )

private

Definition at line 160 of file Function.cpp.

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

Referenced by GetCallee().

Member Data Documentation

◆ def

Function* lldb_private::DirectCallEdge::def

Definition at line 353 of file Function.h.

◆ [union]

union { ... } lldb_private::DirectCallEdge::lazy_callee

Referenced by DirectCallEdge(), GetCallee(), and ParseSymbolFileAndResolve().

◆ resolved

bool lldb_private::DirectCallEdge::resolved = false

private

Whether or not an attempt was made to find the callee's definition.

Definition at line 357 of file Function.h.

Referenced by GetCallee(), and ParseSymbolFileAndResolve().

◆ symbol_name

const char* lldb_private::DirectCallEdge::symbol_name

Definition at line 352 of file Function.h.

Referenced by DirectCallEdge().

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

Private Attributes

Call site related structures

Additional Inherited Members