LLVM  6.0.0svn
Public Member Functions | Public Attributes | List of all members
llvm::ARMAsmBackendDarwin Class Reference

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

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Public Member Functions

 ARMAsmBackendDarwin (const Target &T, const Triple &TT, const MCRegisterInfo &MRI, MachO::CPUSubTypeARM st)
 
std::unique_ptr< MCObjectWritercreateObjectWriter (raw_pwrite_stream &OS) const override
 Create a new MCObjectWriter instance for use by the assembler backend to emit the final object file. More...
 
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 Triple &TT, bool IsLittle)
 
 ~ARMAsmBackend () override
 
unsigned getNumFixupKinds () const override
 Get the number of target specific fixup kinds. More...
 
bool hasNOP () const
 
const MCFixupKindInfogetFixupKindInfo (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, bool IsLittleEndian) const
 
void applyFixup (const MCAssembler &Asm, const MCFixup &Fixup, const MCValue &Target, MutableArrayRef< char > Data, uint64_t Value, bool IsResolved) 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
 
bool mayNeedRelaxation (const MCInst &Inst) const override
 Check whether the given instruction may need relaxation. More...
 
const charreasonForFixupRelaxation (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 (uint64_t Count, MCObjectWriter *OW) 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)
 
bool isLittle () const
 
- Public Member Functions inherited from llvm::MCAsmBackend
 MCAsmBackend (const MCAsmBackend &)=delete
 
MCAsmBackendoperator= (const MCAsmBackend &)=delete
 
virtual ~MCAsmBackend ()
 
virtual void reset ()
 lifetime management 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...
 
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< MCFixupKindgetFixupKind (StringRef Name) const
 Map a relocation name used in .reloc to a fixup kind. More...
 
virtual bool fixupNeedsRelaxationAdvanced (const MCFixup &Fixup, bool Resolved, uint64_t Value, const MCRelaxableFragment *DF, const MCAsmLayout &Layout) const
 Target specific predicate for whether a given fixup requires the associated instruction to be relaxed. More...
 

Public Attributes

const MachO::CPUSubTypeARM Subtype
 

Additional Inherited Members

- Protected Member Functions inherited from llvm::MCAsmBackend
 MCAsmBackend ()
 
 MCAsmBackend (std::unique_ptr< MCCodePadder > TargetCodePadder)
 

Detailed Description

Definition at line 18 of file ARMAsmBackendDarwin.h.

Constructor & Destructor Documentation

◆ ARMAsmBackendDarwin()

llvm::ARMAsmBackendDarwin::ARMAsmBackendDarwin ( const Target T,
const Triple TT,
const MCRegisterInfo MRI,
MachO::CPUSubTypeARM  st 
)
inline

Definition at line 22 of file ARMAsmBackendDarwin.h.

Member Function Documentation

◆ createObjectWriter()

std::unique_ptr<MCObjectWriter> llvm::ARMAsmBackendDarwin::createObjectWriter ( raw_pwrite_stream OS) const
inlineoverridevirtual

Create a new MCObjectWriter instance for use by the assembler backend to emit the final object file.

Implements llvm::MCAsmBackend.

Definition at line 28 of file ARMAsmBackendDarwin.h.

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

◆ generateCompactUnwindEncoding()

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

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: