#include "Target/ARM/MCTargetDesc/ARMAsmBackendDarwin.h"

Inheritance diagram for llvm::ARMAsmBackendDarwin:

Collaboration diagram for llvm::ARMAsmBackendDarwin:

Public Member Functions
	ARMAsmBackendDarwin (const Target &T, const MCSubtargetInfo &STI, const MCRegisterInfo &MRI, MachO::CPUSubTypeARM st)

std::unique_ptr< MCObjectTargetWriter >	createObjectTargetWriter () const override

uint32_t	generateCompactUnwindEncoding (ArrayRef< MCCFIInstruction > Instrs) const override
	Generate compact unwind encoding for the function based on the CFI instructions. More...

Public Member Functions inherited from llvm::ARMAsmBackend
	ARMAsmBackend (const Target &T, const MCSubtargetInfo &STI, support::endianness Endian)

unsigned	getNumFixupKinds () const override
	Get the number of target specific fixup kinds. More...

bool	hasNOP () const

const MCFixupKindInfo &	getFixupKindInfo (MCFixupKind Kind) const override
	Get information on a fixup kind. More...

bool	shouldForceRelocation (const MCAssembler &Asm, const MCFixup &Fixup, const MCValue &Target) override
	Hook to check if a relocation is needed for some target specific reason. More...

unsigned	adjustFixupValue (const MCAssembler &Asm, const MCFixup &Fixup, const MCValue &Target, uint64_t Value, bool IsResolved, MCContext &Ctx, const MCSubtargetInfo *STI) const

void	applyFixup (const MCAssembler &Asm, const MCFixup &Fixup, const MCValue &Target, MutableArrayRef< char > Data, uint64_t Value, bool IsResolved, const MCSubtargetInfo *STI) const override
	Apply the `Value` for given `Fixup` into the provided data fragment, at the offset specified by the fixup and following the fixup kind as appropriate. More...

unsigned	getRelaxedOpcode (unsigned Op, const MCSubtargetInfo &STI) const

bool	mayNeedRelaxation (const MCInst &Inst, const MCSubtargetInfo &STI) const override
	Check whether the given instruction may need relaxation. More...

const char *	reasonForFixupRelaxation (const MCFixup &Fixup, uint64_t Value) const

bool	fixupNeedsRelaxation (const MCFixup &Fixup, uint64_t Value, const MCRelaxableFragment *DF, const MCAsmLayout &Layout) const override
	Simple predicate for targets where !Resolved implies requiring relaxation. More...

void	relaxInstruction (const MCInst &Inst, const MCSubtargetInfo &STI, MCInst &Res) const override
	Relax the instruction in the given fragment to the next wider instruction. More...

bool	writeNopData (raw_ostream &OS, uint64_t Count) const override
	Write an (optimal) nop sequence of Count bytes to the given output. More...

void	handleAssemblerFlag (MCAssemblerFlag Flag) override
	Handle any target-specific assembler flags. By default, do nothing. More...

unsigned	getPointerSize () const

bool	isThumb () const

void	setIsThumb (bool it)

Public Member Functions inherited from llvm::MCAsmBackend
	MCAsmBackend (const MCAsmBackend &)=delete

MCAsmBackend &	operator= (const MCAsmBackend &)=delete

virtual	~MCAsmBackend ()

virtual void	reset ()
	lifetime management More...

std::unique_ptr< MCObjectWriter >	createObjectWriter (raw_pwrite_stream &OS) const
	Create a new MCObjectWriter instance for use by the assembler backend to emit the final object file. More...

std::unique_ptr< MCObjectWriter >	createDwoObjectWriter (raw_pwrite_stream &OS, raw_pwrite_stream &DwoOS) const
	Create an MCObjectWriter that writes two object files: a .o file which is linked into the final program and a .dwo file which is used by debuggers. More...

virtual unsigned	getMinimumNopSize () const
	Returns the minimum size of a nop in bytes on this target. More...

virtual void	finishLayout (MCAssembler const &Asm, MCAsmLayout &Layout) const
	Give backend an opportunity to finish layout after relaxation. More...

virtual bool	isMicroMips (const MCSymbol *Sym) const
	Check whether a given symbol has been flagged with MICROMIPS flag. More...

void	handleCodePaddingBasicBlockStart (MCObjectStreamer *OS, const MCCodePaddingContext &Context)
	Handles all target related code padding when starting to write a new basic block to an object file. More...

void	handleCodePaddingBasicBlockEnd (const MCCodePaddingContext &Context)
	Handles all target related code padding after writing a block to an object file. More...

void	handleCodePaddingInstructionBegin (const MCInst &Inst)
	Handles all target related code padding before writing a new instruction to an object file. More...

void	handleCodePaddingInstructionEnd (const MCInst &Inst)
	Handles all target related code padding after writing an instruction to an object file. More...

bool	relaxFragment (MCPaddingFragment *PF, MCAsmLayout &Layout)
	Relaxes a fragment (changes the size of the padding) according to target requirements. More...

virtual Optional< MCFixupKind >	getFixupKind (StringRef Name) const
	Map a relocation name used in .reloc to a fixup kind. More...

virtual bool	requiresDiffExpressionRelocations () const
	Check whether the given target requires emitting differences of two symbols as a set of relocations. More...

virtual bool	fixupNeedsRelaxationAdvanced (const MCFixup &Fixup, bool Resolved, uint64_t Value, const MCRelaxableFragment *DF, const MCAsmLayout &Layout, const bool WasForced) const
	Target specific predicate for whether a given fixup requires the associated instruction to be relaxed. More...

Public Attributes
const MachO::CPUSubTypeARM	Subtype

Public Attributes inherited from llvm::MCAsmBackend
const support::endianness	Endian

Additional Inherited Members
Protected Member Functions inherited from llvm::MCAsmBackend
	MCAsmBackend (support::endianness Endian)

Detailed Description

Definition at line 18 of file ARMAsmBackendDarwin.h.

Constructor & Destructor Documentation

◆ ARMAsmBackendDarwin()

llvm::ARMAsmBackendDarwin::ARMAsmBackendDarwin	(	const Target &	T,
		const MCSubtargetInfo &	STI,
		const MCRegisterInfo &	MRI,
		MachO::CPUSubTypeARM	st
	)

inline

Definition at line 22 of file ARMAsmBackendDarwin.h.

Member Function Documentation

◆ createObjectTargetWriter()

std::unique_ptr<MCObjectTargetWriter> llvm::ARMAsmBackendDarwin::createObjectTargetWriter ( ) const

inlineoverridevirtual

Implements llvm::MCAsmBackend.

Definition at line 27 of file ARMAsmBackendDarwin.h.

References llvm::MachO::CPU_TYPE_ARM, llvm::createARMMachObjectWriter(), and generateCompactUnwindEncoding().

◆ generateCompactUnwindEncoding()

uint32_t ARMAsmBackendDarwin::generateCompactUnwindEncoding ( ArrayRef< MCCFIInstruction > Instrs ) const

overridevirtual

Generate compact unwind encoding for the function based on the CFI instructions.

If the CFI instructions describe a frame that cannot be encoded in compact unwind, the method returns UNWIND_ARM_MODE_DWARF which tells the runtime to fallback and unwind using dwarf.

Reimplemented from llvm::MCAsmBackend.

Definition at line 966 of file ARMAsmBackend.cpp.

Referenced by createObjectTargetWriter().

Member Data Documentation

◆ Subtype

const MachO::CPUSubTypeARM llvm::ARMAsmBackendDarwin::Subtype

Definition at line 21 of file ARMAsmBackendDarwin.h.

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

lib/Target/ARM/MCTargetDesc/ARMAsmBackendDarwin.h
lib/Target/ARM/MCTargetDesc/ARMAsmBackend.cpp

Public Member Functions

Public Attributes

Additional Inherited Members