llvm::jitlink::EHFrameCFIBlockInspector Class Reference

Inspect an eh-frame CFI record. More...

#include "llvm/ExecutionEngine/JITLink/EHFrameSupport.h"

Public Member Functions
bool	isFDE () const
	Returns true if this frame is an FDE, false for a CIE.
bool	isCIE () const
	Returns true if this frame is a CIE, false for an FDE.
Edge *	getPersonalityEdge () const
	If this is a CIE record, returns the Edge pointing at the personality function, if any.
Edge *	getCIEEdge () const
	If this is an FDE record, returns the Edge pointing to the CIE.
Edge *	getPCBeginEdge () const
	If this is an FDE record, returns the Edge pointing at the PC-begin symbol.
Edge *	getLSDAEdge () const
	If this is an FDE record, returns the Edge pointing at the LSDA, if any.

Static Public Member Functions
static EHFrameCFIBlockInspector	FromEdgeScan (Block &B)
	Identify CFI record type and edges based on number and order of edges in the given block only.

Detailed Description

Inspect an eh-frame CFI record.

Definition at line 25 of file EHFrameSupport.h.

Member Function Documentation

FromEdgeScan()

EHFrameCFIBlockInspector llvm::jitlink::EHFrameCFIBlockInspector::FromEdgeScan ( Block &  B )

static

Identify CFI record type and edges based on number and order of edges in the given block only.

This assumes that the block contains one CFI record that has already been split out and fixed by the DWARFRecordSplitter and EHFrameEdgeFixer passes.

Zero or one outgoing edges: Record is CIE. If present, edge points to personality.

Two or three outgoing edges: Record is an FDE. First edge points to CIE, second to PC-begin, third (if present) to LSDA.

It is illegal to call this function on a block with four or more edges.

Definition at line 656 of file EHFrameSupport.cpp.

References assert(), B, E, LHS, llvm::SmallVectorTemplateBase< T, bool >::push_back(), RHS, llvm::SmallVectorBase< Size_T >::size(), and llvm::sort().

getCIEEdge()

Edge * llvm::jitlink::EHFrameCFIBlockInspector::getCIEEdge ( ) const

inline

If this is an FDE record, returns the Edge pointing to the CIE.

If this is a CIE record, returns null.

The result is not valid if any modification has been made to the block after parsing.

Definition at line 60 of file EHFrameSupport.h.

getLSDAEdge()

Edge * llvm::jitlink::EHFrameCFIBlockInspector::getLSDAEdge ( ) const

inline

If this is an FDE record, returns the Edge pointing at the LSDA, if any.

It is illegal to call this method on CIE records.

Definition at line 69 of file EHFrameSupport.h.

References assert(), isFDE(), and LSDAEdge.

getPCBeginEdge()

Edge * llvm::jitlink::EHFrameCFIBlockInspector::getPCBeginEdge ( ) const

inline

If this is an FDE record, returns the Edge pointing at the PC-begin symbol.

If this a CIE record, returns null.

Definition at line 65 of file EHFrameSupport.h.

getPersonalityEdge()

Edge * llvm::jitlink::EHFrameCFIBlockInspector::getPersonalityEdge ( ) const

inline

If this is a CIE record, returns the Edge pointing at the personality function, if any.

It is illegal to call this method on FDE records.

Definition at line 50 of file EHFrameSupport.h.

References assert(), isCIE(), and PersonalityEdge.

isCIE()

bool llvm::jitlink::EHFrameCFIBlockInspector::isCIE ( ) const

inline

Returns true if this frame is a CIE, false for an FDE.

Definition at line 45 of file EHFrameSupport.h.

Referenced by getPersonalityEdge().

isFDE()

bool llvm::jitlink::EHFrameCFIBlockInspector::isFDE ( ) const

inline

Returns true if this frame is an FDE, false for a CIE.

Definition at line 42 of file EHFrameSupport.h.

Referenced by getLSDAEdge().

Member Data Documentation

LSDAEdge

Edge* llvm::jitlink::EHFrameCFIBlockInspector::LSDAEdge

Definition at line 82 of file EHFrameSupport.h.

Referenced by getLSDAEdge().

PersonalityEdge

Edge* llvm::jitlink::EHFrameCFIBlockInspector::PersonalityEdge

Definition at line 81 of file EHFrameSupport.h.

Referenced by getPersonalityEdge().

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

• include/llvm/ExecutionEngine/JITLink/EHFrameSupport.h
• lib/ExecutionEngine/JITLink/EHFrameSupport.cpp