LLVM: llvm::UnwindOpcodeAssembler Class Reference

LLVM 8.0.1

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

Public Member Functions
	UnwindOpcodeAssembler ()

void	Reset ()
	Reset the unwind opcode assembler. More...

void	setPersonality (const MCSymbol *Per)
	Set the personality. More...

void	EmitRegSave (uint32_t RegSave)
	Emit unwind opcodes for .save directives. More...

void	EmitVFPRegSave (uint32_t VFPRegSave)
	Emit unwind opcodes for .vsave directives. More...

void	EmitSetSP (uint16_t Reg)
	Emit unwind opcodes to copy address from source register to $sp. More...

void	EmitSPOffset (int64_t Offset)
	Emit unwind opcodes to add $sp with an offset. More...

void	EmitRaw (const SmallVectorImpl< uint8_t > &Opcodes)
	Emit unwind raw opcodes. More...

void	Finalize (unsigned &PersonalityIndex, SmallVectorImpl< uint8_t > &Result)
	Finalize the unwind opcode sequence for EmitBytes() More...

Detailed Description

Definition at line 26 of file ARMUnwindOpAsm.h.

Constructor & Destructor Documentation

◆ UnwindOpcodeAssembler()

llvm::UnwindOpcodeAssembler::UnwindOpcodeAssembler ( )

inline

Definition at line 33 of file ARMUnwindOpAsm.h.

References llvm::SmallVectorTemplateBase< T, bool >::push_back().

Member Function Documentation

◆ EmitRaw()

void llvm::UnwindOpcodeAssembler::EmitRaw ( const SmallVectorImpl< uint8_t > & Opcodes )

inline

Emit unwind raw opcodes.

Definition at line 63 of file ARMUnwindOpAsm.h.

References llvm::SmallVectorTemplateCommon< T, typename >::back(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::SmallVectorTemplateCommon< T, typename >::end(), Finalize(), llvm::SmallVectorImpl< T >::insert(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), Size, and llvm::SmallVectorBase::size().

◆ EmitRegSave()

void UnwindOpcodeAssembler::EmitRegSave ( uint32_t RegSave )

Emit unwind opcodes for .save directives.

Definition at line 67 of file ARMUnwindOpAsm.cpp.

References llvm::countTrailingOnes(), llvm::BitmaskEnumDetail::Mask(), llvm::ARM::EHABI::UNWIND_OPCODE_POP_REG_MASK, llvm::ARM::EHABI::UNWIND_OPCODE_POP_REG_MASK_R4, llvm::ARM::EHABI::UNWIND_OPCODE_POP_REG_RANGE_R4, and llvm::ARM::EHABI::UNWIND_OPCODE_POP_REG_RANGE_R4_R14.

Referenced by setPersonality().

◆ EmitSetSP()

void UnwindOpcodeAssembler::EmitSetSP ( uint16_t Reg )

Emit unwind opcodes to copy address from source register to $sp.

Definition at line 128 of file ARMUnwindOpAsm.cpp.

References llvm::ARM::EHABI::UNWIND_OPCODE_SET_VSP.

Referenced by setPersonality().

◆ EmitSPOffset()

void UnwindOpcodeAssembler::EmitSPOffset ( int64_t Offset )

Emit unwind opcodes to add $sp with an offset.

Definition at line 133 of file ARMUnwindOpAsm.cpp.

References llvm::encodeULEB128(), llvm::ARM::EHABI::UNWIND_OPCODE_DEC_VSP, llvm::ARM::EHABI::UNWIND_OPCODE_INC_VSP, and llvm::ARM::EHABI::UNWIND_OPCODE_INC_VSP_ULEB128.

Referenced by setPersonality().

◆ EmitVFPRegSave()

void UnwindOpcodeAssembler::EmitVFPRegSave ( uint32_t VFPRegSave )

Emit unwind opcodes for .vsave directives.

Definition at line 105 of file ARMUnwindOpAsm.cpp.

References llvm::countLeadingOnes(), llvm::countLeadingZeros(), llvm::ARM::EHABI::UNWIND_OPCODE_POP_VFP_REG_RANGE_FSTMFDD, and llvm::ARM::EHABI::UNWIND_OPCODE_POP_VFP_REG_RANGE_FSTMFDD_D16.

Referenced by setPersonality().

◆ Finalize()

void UnwindOpcodeAssembler::Finalize	(	unsigned &	PersonalityIndex,
		SmallVectorImpl< uint8_t > &	Result
	)

Finalize the unwind opcode sequence for EmitBytes()

Definition at line 156 of file ARMUnwindOpAsm.cpp.

References llvm::ARM::EHABI::AEABI_UNWIND_CPP_PR0, llvm::ARM::EHABI::AEABI_UNWIND_CPP_PR1, assert(), llvm::sys::path::end(), llvm::ARM::EHABI::NUM_PERSONALITY_INDEX, and llvm::SmallVectorImpl< T >::resize().

Referenced by EmitRaw().

◆ Reset()

void llvm::UnwindOpcodeAssembler::Reset ( )

inline

Reset the unwind opcode assembler.

Definition at line 38 of file ARMUnwindOpAsm.h.

References llvm::SmallVectorImpl< T >::clear(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

◆ setPersonality()

void llvm::UnwindOpcodeAssembler::setPersonality ( const MCSymbol * Per )

inline

Set the personality.

Definition at line 46 of file ARMUnwindOpAsm.h.

References EmitRegSave(), EmitSetSP(), EmitSPOffset(), EmitVFPRegSave(), and Reg.

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

lib/Target/ARM/MCTargetDesc/ARMUnwindOpAsm.h
lib/Target/ARM/MCTargetDesc/ARMUnwindOpAsm.cpp