LLVM: llvm::ARM::WinEH Namespace Reference

LLVM 19.0.0git

Classes
struct	EpilogueScope
	ExceptionDataRecord - An entry in the table of exception data (.xdata) More...

struct	ExceptionDataRecord

class	RuntimeFunction
	RuntimeFunction - An entry in the table of procedure data (.pdata) More...

class	RuntimeFunctionARM64
	RuntimeFunctionARM64 - An entry in the table of procedure data (.pdata) More...

Enumerations
enum class	RuntimeFunctionFlag { RFF_Unpacked , RFF_Packed , RFF_PackedFragment , RFF_Reserved }

enum class	ReturnType { RT_POP , RT_B , RT_BW , RT_NoEpilogue }

Functions
bool	PrologueFolding (const RuntimeFunction &RF)
	PrologueFolding - pseudo-flag derived from Stack Adjust indicating that the prologue has stack adjustment combined into the push.

bool	EpilogueFolding (const RuntimeFunction &RF)
	Epilogue - pseudo-flag derived from Stack Adjust indicating that the epilogue has stack adjustment combined into the pop.

uint16_t	StackAdjustment (const RuntimeFunction &RF)
	StackAdjustment - calculated stack adjustment in words.

std::pair< uint16_t, uint32_t >	SavedRegisterMask (const RuntimeFunction &RF, bool Prologue=true)
	SavedRegisterMask - Utility function to calculate the set of saved general purpose (r0-r15) and VFP (d0-d31) registers.

size_t	HeaderWords (const ExceptionDataRecord &XR)

Enumeration Type Documentation

◆ ReturnType

enum class llvm::ARM::WinEH::ReturnType

strong

Enumerator
RT_POP
RT_B	return via pop {pc} (L flag must be set)
RT_BW	16-bit branch
RT_NoEpilogue	32-bit branch

Definition at line 25 of file ARMWinEH.h.

◆ RuntimeFunctionFlag

enum class llvm::ARM::WinEH::RuntimeFunctionFlag

strong

Enumerator
RFF_Unpacked
RFF_Packed	unpacked entry
RFF_PackedFragment	packed entry
RFF_Reserved	packed entry representing a fragment

Definition at line 18 of file ARMWinEH.h.

Function Documentation

◆ EpilogueFolding()

bool llvm::ARM::WinEH::EpilogueFolding ( const RuntimeFunction & RF )

inline

Epilogue - pseudo-flag derived from Stack Adjust indicating that the epilogue has stack adjustment combined into the pop.

Definition at line 193 of file ARMWinEH.h.

References llvm::ARM::WinEH::RuntimeFunction::StackAdjust().

Referenced by SavedRegisterMask().

◆ HeaderWords()

size_t llvm::ARM::WinEH::HeaderWords ( const ExceptionDataRecord & XR )

inline

Definition at line 512 of file ARMWinEH.h.

References llvm::ARM::WinEH::ExceptionDataRecord::Data, and llvm::ARM::WinEH::ExceptionDataRecord::isAArch64.

Referenced by llvm::ARM::WinEH::ExceptionDataRecord::CodeWords(), llvm::ARM::WinEH::ExceptionDataRecord::EpilogueCount(), llvm::ARM::WinEH::ExceptionDataRecord::EpilogueScopes(), llvm::ARM::WinEH::ExceptionDataRecord::ExceptionHandlerParameter(), llvm::ARM::WinEH::ExceptionDataRecord::ExceptionHandlerRVA(), and llvm::ARM::WinEH::ExceptionDataRecord::UnwindByteCode().

◆ PrologueFolding()

bool llvm::ARM::WinEH::PrologueFolding ( const RuntimeFunction & RF )

inline

PrologueFolding - pseudo-flag derived from Stack Adjust indicating that the prologue has stack adjustment combined into the push.

Definition at line 188 of file ARMWinEH.h.

References llvm::ARM::WinEH::RuntimeFunction::StackAdjust().

Referenced by SavedRegisterMask().

◆ SavedRegisterMask()

std::pair< uint16_t, uint32_t > llvm::ARM::WinEH::SavedRegisterMask	(	const RuntimeFunction &	RF,
		bool	Prologue = `true`
	)

SavedRegisterMask - Utility function to calculate the set of saved general purpose (r0-r15) and VFP (d0-d31) registers.

Definition at line 14 of file ARMWinEH.cpp.

References llvm::ARM::WinEH::RuntimeFunction::C(), EpilogueFolding(), llvm::ARM::WinEH::RuntimeFunction::H(), llvm::ARM::WinEH::RuntimeFunction::L(), PrologueFolding(), llvm::ARM::WinEH::RuntimeFunction::R(), llvm::ARM::WinEH::RuntimeFunction::Reg(), llvm::ARM::WinEH::RuntimeFunction::Ret(), RT_POP, and llvm::ARM::WinEH::RuntimeFunction::StackAdjust().

◆ StackAdjustment()

uint16_t llvm::ARM::WinEH::StackAdjustment ( const RuntimeFunction & RF )

inline

StackAdjustment - calculated stack adjustment in words.

The stack adjustment should be determined via this function to account for the special handling the special encoding when the value is >= 0x3f4.

Definition at line 199 of file ARMWinEH.h.

References llvm::ARM::WinEH::RuntimeFunction::StackAdjust().