MCWin64EH.cpp File Reference

#include "llvm/MC/MCWin64EH.h"
#include "llvm/ADT/Twine.h"
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCObjectStreamer.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Win64EH.h"

Go to the source code of this file.

Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.

Functions
static uint8_t	CountOfUnwindCodes (std::vector< WinEH::Instruction > &Insns)
static void	EmitAbsDifference (MCStreamer &Streamer, const MCSymbol *LHS, const MCSymbol *RHS)
static void	EmitAbsDifference16 (MCStreamer &Streamer, const MCSymbol *LHS, const MCSymbol *RHS)
	Emit a 16-bit (2-byte LE) label difference.
static void	EmitUnwindCode (MCStreamer &streamer, const MCSymbol *begin, WinEH::Instruction &inst)
static void	EmitSymbolRefWithOfs (MCStreamer &streamer, const MCSymbol *Base, int64_t Offset)
static void	EmitSymbolRefWithOfs (MCStreamer &streamer, const MCSymbol *Base, const MCSymbol *Other)
static void	EmitRuntimeFunction (MCStreamer &streamer, const WinEH::FrameInfo *info)
static std::optional< int64_t >	GetOptionalAbsDifference (const MCAssembler &Assembler, const MCSymbol *LHS, const MCSymbol *RHS)
static std::optional< uint16_t >	FindInPool (ArrayRef< uint8_t > Haystack, ArrayRef< uint8_t > Needle)
	Try to find Needle as a contiguous subsequence within Haystack.
static bool	EpilogIpOffsetsMatch (const WinEH::FrameInfo::Epilog &A, const WinEH::FrameInfo::Epilog &B, const MCAssembler &Asm)
	Compare the relative IP offset arrays of two epilogs.
static void	EmitUnwindInfoV3 (MCStreamer &Streamer, WinEH::FrameInfo *Info)
	Emit V3 UNWIND_INFO for a single frame.
static void	EmitUnwindInfo (MCStreamer &streamer, WinEH::FrameInfo *info)
static const MCExpr *	GetSubDivExpr (MCStreamer &Streamer, const MCSymbol *LHS, const MCSymbol *RHS, int Div)
static std::optional< int64_t >	GetOptionalAbsDifference (MCStreamer &Streamer, const MCSymbol *LHS, const MCSymbol *RHS)
static int64_t	GetAbsDifference (MCStreamer &Streamer, const MCSymbol *LHS, const MCSymbol *RHS)
static void	checkARM64Instructions (MCStreamer &Streamer, ArrayRef< WinEH::Instruction > Insns, const MCSymbol *Begin, const MCSymbol *End, StringRef Name, StringRef Type)
static uint32_t	ARM64CountOfUnwindCodes (ArrayRef< WinEH::Instruction > Insns)
static void	ARM64EmitUnwindCode (MCStreamer &streamer, const WinEH::Instruction &inst)
static MCSymbol *	FindMatchingEpilog (const std::vector< WinEH::Instruction > &EpilogInstrs, const std::vector< MCSymbol * > &Epilogs, const WinEH::FrameInfo *info)
static void	simplifyARM64Opcodes (std::vector< WinEH::Instruction > &Instructions, bool Reverse)
static int	getARM64OffsetInProlog (const std::vector< WinEH::Instruction > &Prolog, const std::vector< WinEH::Instruction > &Epilog)
static int	checkARM64PackedEpilog (MCStreamer &streamer, WinEH::FrameInfo *info, WinEH::FrameInfo::Segment *Seg, int PrologCodeBytes)
static bool	tryARM64PackedUnwind (WinEH::FrameInfo *info, uint32_t FuncLength, int PackedEpilogOffset)
static void	ARM64ProcessEpilogs (WinEH::FrameInfo *info, WinEH::FrameInfo::Segment *Seg, uint32_t &TotalCodeBytes, MapVector< MCSymbol *, uint32_t > &EpilogInfo)
static void	ARM64FindSegmentsInFunction (MCStreamer &streamer, WinEH::FrameInfo *info, int64_t RawFuncLength)
static void	ARM64EmitUnwindInfoForSegment (MCStreamer &streamer, WinEH::FrameInfo *info, WinEH::FrameInfo::Segment &Seg, bool TryPacked=true)
static void	ARM64EmitUnwindInfo (MCStreamer &streamer, WinEH::FrameInfo *info, bool TryPacked=true)
static uint32_t	ARMCountOfUnwindCodes (ArrayRef< WinEH::Instruction > Insns)
static uint32_t	ARMCountOfInstructionBytes (ArrayRef< WinEH::Instruction > Insns, bool *HasCustom=nullptr)
static void	checkARMInstructions (MCStreamer &Streamer, ArrayRef< WinEH::Instruction > Insns, const MCSymbol *Begin, const MCSymbol *End, StringRef Name, StringRef Type)
static bool	isARMTerminator (const WinEH::Instruction &inst)
static void	ARMEmitUnwindCode (MCStreamer &streamer, const WinEH::Instruction &inst)
static int	getARMOffsetInProlog (const std::vector< WinEH::Instruction > &Prolog, const std::vector< WinEH::Instruction > &Epilog, bool CanTweakProlog)
static int	checkARMPackedEpilog (MCStreamer &streamer, WinEH::FrameInfo *info, int PrologCodeBytes)
static bool	parseRegMask (unsigned Mask, bool &HasLR, bool &HasR11, unsigned &Folded, int &IntRegs)
static bool	tryARMPackedUnwind (MCStreamer &streamer, WinEH::FrameInfo *info, uint32_t FuncLength)
static void	ARMEmitUnwindInfo (MCStreamer &streamer, WinEH::FrameInfo *info, bool TryPacked=true)
static void	ARM64EmitRuntimeFunction (MCStreamer &streamer, const WinEH::FrameInfo *info)
static void	ARMEmitRuntimeFunction (MCStreamer &streamer, const WinEH::FrameInfo *info)

Function Documentation

ARM64CountOfUnwindCodes()

uint32_t ARM64CountOfUnwindCodes ( ArrayRef< WinEH::Instruction > Insns )

static

Definition at line 1118 of file MCWin64EH.cpp.

References llvm::Count, I, llvm_unreachable, llvm::Win64EH::UOP_AddFP, llvm::Win64EH::UOP_AllocLarge, llvm::Win64EH::UOP_AllocMedium, llvm::Win64EH::UOP_AllocSmall, llvm::Win64EH::UOP_AllocZ, llvm::Win64EH::UOP_ClearUnwoundToCall, llvm::Win64EH::UOP_Context, llvm::Win64EH::UOP_ECContext, llvm::Win64EH::UOP_End, llvm::Win64EH::UOP_Nop, llvm::Win64EH::UOP_PACSignLR, llvm::Win64EH::UOP_PushMachFrame, llvm::Win64EH::UOP_SaveAnyRegD, llvm::Win64EH::UOP_SaveAnyRegDP, llvm::Win64EH::UOP_SaveAnyRegDPX, llvm::Win64EH::UOP_SaveAnyRegDX, llvm::Win64EH::UOP_SaveAnyRegI, llvm::Win64EH::UOP_SaveAnyRegIP, llvm::Win64EH::UOP_SaveAnyRegIPX, llvm::Win64EH::UOP_SaveAnyRegIX, llvm::Win64EH::UOP_SaveAnyRegQ, llvm::Win64EH::UOP_SaveAnyRegQP, llvm::Win64EH::UOP_SaveAnyRegQPX, llvm::Win64EH::UOP_SaveAnyRegQX, llvm::Win64EH::UOP_SaveFPLR, llvm::Win64EH::UOP_SaveFPLRX, llvm::Win64EH::UOP_SaveFReg, llvm::Win64EH::UOP_SaveFRegP, llvm::Win64EH::UOP_SaveFRegPX, llvm::Win64EH::UOP_SaveFRegX, llvm::Win64EH::UOP_SaveLRPair, llvm::Win64EH::UOP_SaveNext, llvm::Win64EH::UOP_SavePReg, llvm::Win64EH::UOP_SaveR19R20X, llvm::Win64EH::UOP_SaveReg, llvm::Win64EH::UOP_SaveRegP, llvm::Win64EH::UOP_SaveRegPX, llvm::Win64EH::UOP_SaveRegX, llvm::Win64EH::UOP_SaveZReg, llvm::Win64EH::UOP_SetFP, and llvm::Win64EH::UOP_TrapFrame.

Referenced by ARM64EmitUnwindInfo(), ARM64ProcessEpilogs(), checkARM64PackedEpilog(), and getARM64OffsetInProlog().

ARM64EmitRuntimeFunction()

void ARM64EmitRuntimeFunction ( MCStreamer & streamer, const WinEH::FrameInfo * info )

static

Definition at line 3360 of file MCWin64EH.cpp.

References llvm::MCSymbolRefExpr::create(), llvm::MCStreamer::emitInt32(), EmitSymbolRefWithOfs(), llvm::MCStreamer::emitValue(), llvm::MCStreamer::emitValueToAlignment(), llvm::MCStreamer::getContext(), info, and llvm::MCSymbolRefExpr::VK_COFF_IMGREL32.

Referenced by llvm::Win64EH::ARM64UnwindEmitter::Emit().

ARM64EmitUnwindCode()

void ARM64EmitUnwindCode ( MCStreamer & streamer, const WinEH::Instruction & inst )

static

Definition at line 1228 of file MCWin64EH.cpp.

References assert(), llvm::MCStreamer::emitInt8(), llvm_unreachable, Mode, llvm::Offset, llvm::WinEH::Instruction::Offset, llvm::WinEH::Instruction::Operation, llvm::WinEH::Instruction::Register, llvm::Win64EH::UOP_AddFP, llvm::Win64EH::UOP_AllocLarge, llvm::Win64EH::UOP_AllocMedium, llvm::Win64EH::UOP_AllocSmall, llvm::Win64EH::UOP_AllocZ, llvm::Win64EH::UOP_ClearUnwoundToCall, llvm::Win64EH::UOP_Context, llvm::Win64EH::UOP_ECContext, llvm::Win64EH::UOP_End, llvm::Win64EH::UOP_Nop, llvm::Win64EH::UOP_PACSignLR, llvm::Win64EH::UOP_PushMachFrame, llvm::Win64EH::UOP_SaveAnyRegD, llvm::Win64EH::UOP_SaveAnyRegDP, llvm::Win64EH::UOP_SaveAnyRegDPX, llvm::Win64EH::UOP_SaveAnyRegDX, llvm::Win64EH::UOP_SaveAnyRegI, llvm::Win64EH::UOP_SaveAnyRegIP, llvm::Win64EH::UOP_SaveAnyRegIPX, llvm::Win64EH::UOP_SaveAnyRegIX, llvm::Win64EH::UOP_SaveAnyRegQ, llvm::Win64EH::UOP_SaveAnyRegQP, llvm::Win64EH::UOP_SaveAnyRegQPX, llvm::Win64EH::UOP_SaveAnyRegQX, llvm::Win64EH::UOP_SaveFPLR, llvm::Win64EH::UOP_SaveFPLRX, llvm::Win64EH::UOP_SaveFReg, llvm::Win64EH::UOP_SaveFRegP, llvm::Win64EH::UOP_SaveFRegPX, llvm::Win64EH::UOP_SaveFRegX, llvm::Win64EH::UOP_SaveLRPair, llvm::Win64EH::UOP_SaveNext, llvm::Win64EH::UOP_SavePReg, llvm::Win64EH::UOP_SaveR19R20X, llvm::Win64EH::UOP_SaveReg, llvm::Win64EH::UOP_SaveRegP, llvm::Win64EH::UOP_SaveRegPX, llvm::Win64EH::UOP_SaveRegX, llvm::Win64EH::UOP_SaveZReg, llvm::Win64EH::UOP_SetFP, and llvm::Win64EH::UOP_TrapFrame.

Referenced by ARM64EmitUnwindInfoForSegment().

ARM64EmitUnwindInfo()

void ARM64EmitUnwindInfo ( MCStreamer & streamer, WinEH::FrameInfo * info, bool TryPacked = true )

static

Definition at line 2205 of file MCWin64EH.cpp.

References ARM64CountOfUnwindCodes(), ARM64EmitUnwindInfoForSegment(), ARM64FindSegmentsInFunction(), GetAbsDifference(), llvm::MCStreamer::getContext(), I, info, llvm::report_fatal_error(), llvm::MCContext::reportError(), and simplifyARM64Opcodes().

Referenced by llvm::Win64EH::ARM64UnwindEmitter::Emit(), and llvm::Win64EH::ARM64UnwindEmitter::EmitUnwindInfo().

ARM64EmitUnwindInfoForSegment()

void ARM64EmitUnwindInfoForSegment ( MCStreamer & streamer, WinEH::FrameInfo * info, WinEH::FrameInfo::Segment & Seg, bool TryPacked = true )

static

Definition at line 2058 of file MCWin64EH.cpp.

References ARM64EmitUnwindCode(), ARM64ProcessEpilogs(), assert(), checkARM64PackedEpilog(), llvm::MCSymbolRefExpr::create(), llvm::MCContext::createTempSymbol(), llvm::MCStreamer::emitInt32(), llvm::MCStreamer::emitInt8(), llvm::MCStreamer::emitLabel(), llvm::MCStreamer::emitValue(), llvm::MCStreamer::emitValueToAlignment(), llvm::WinEH::FrameInfo::Segment::Epilogs, llvm::MCStreamer::getContext(), llvm::WinEH::FrameInfo::Segment::HasProlog, I, info, llvm::WinEH::FrameInfo::Segment::Length, llvm::WinEH::FrameInfo::Segment::Offset, llvm::report_fatal_error(), llvm::reverse(), llvm::WinEH::FrameInfo::Segment::Symbol, tryARM64PackedUnwind(), and llvm::MCSymbolRefExpr::VK_COFF_IMGREL32.

Referenced by ARM64EmitUnwindInfo().

ARM64FindSegmentsInFunction()

void ARM64FindSegmentsInFunction ( MCStreamer & streamer, WinEH::FrameInfo * info, int64_t RawFuncLength )

static

Definition at line 1977 of file MCWin64EH.cpp.

References assert(), llvm::SmallVectorTemplateCommon< T, typename >::back(), checkARM64Instructions(), E(), GetAbsDifference(), I, info, llvm::Offset, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::SmallVectorTemplateCommon< T, typename >::size().

Referenced by ARM64EmitUnwindInfo().

ARM64ProcessEpilogs()

void ARM64ProcessEpilogs ( WinEH::FrameInfo * info, WinEH::FrameInfo::Segment * Seg, uint32_t & TotalCodeBytes, MapVector< MCSymbol *, uint32_t > & EpilogInfo )

static

Definition at line 1933 of file MCWin64EH.cpp.

References ARM64CountOfUnwindCodes(), assert(), llvm::WinEH::FrameInfo::Segment::Epilogs, FindMatchingEpilog(), getARM64OffsetInProlog(), llvm::WinEH::FrameInfo::Segment::HasProlog, I, and info.

Referenced by ARM64EmitUnwindInfoForSegment().

ARMCountOfInstructionBytes()

uint32_t ARMCountOfInstructionBytes ( ArrayRef< WinEH::Instruction > Insns, bool * HasCustom = nullptr )

static

Definition at line 2354 of file MCWin64EH.cpp.

References llvm::Count, I, llvm_unreachable, llvm::Win64EH::UOP_AllocHuge, llvm::Win64EH::UOP_AllocLarge, llvm::Win64EH::UOP_AllocSmall, llvm::Win64EH::UOP_Custom, llvm::Win64EH::UOP_End, llvm::Win64EH::UOP_EndNop, llvm::Win64EH::UOP_Nop, llvm::Win64EH::UOP_SaveFRegD0D15, llvm::Win64EH::UOP_SaveFRegD16D31, llvm::Win64EH::UOP_SaveFRegD8D15, llvm::Win64EH::UOP_SaveLR, llvm::Win64EH::UOP_SaveRegMask, llvm::Win64EH::UOP_SaveRegsR4R7LR, llvm::Win64EH::UOP_SaveSP, llvm::Win64EH::UOP_WideAllocHuge, llvm::Win64EH::UOP_WideAllocLarge, llvm::Win64EH::UOP_WideAllocMedium, llvm::Win64EH::UOP_WideEndNop, llvm::Win64EH::UOP_WideNop, llvm::Win64EH::UOP_WideSaveRegMask, and llvm::Win64EH::UOP_WideSaveRegsR4R11LR.

Referenced by checkARMInstructions(), checkARMPackedEpilog(), and tryARMPackedUnwind().

ARMCountOfUnwindCodes()

uint32_t ARMCountOfUnwindCodes ( ArrayRef< WinEH::Instruction > Insns )

static

Definition at line 2283 of file MCWin64EH.cpp.

References llvm::Count, I, llvm_unreachable, llvm::Win64EH::UOP_AllocHuge, llvm::Win64EH::UOP_AllocLarge, llvm::Win64EH::UOP_AllocSmall, llvm::Win64EH::UOP_Custom, llvm::Win64EH::UOP_End, llvm::Win64EH::UOP_EndNop, llvm::Win64EH::UOP_Nop, llvm::Win64EH::UOP_SaveFRegD0D15, llvm::Win64EH::UOP_SaveFRegD16D31, llvm::Win64EH::UOP_SaveFRegD8D15, llvm::Win64EH::UOP_SaveLR, llvm::Win64EH::UOP_SaveRegMask, llvm::Win64EH::UOP_SaveRegsR4R7LR, llvm::Win64EH::UOP_SaveSP, llvm::Win64EH::UOP_WideAllocHuge, llvm::Win64EH::UOP_WideAllocLarge, llvm::Win64EH::UOP_WideAllocMedium, llvm::Win64EH::UOP_WideEndNop, llvm::Win64EH::UOP_WideNop, llvm::Win64EH::UOP_WideSaveRegMask, and llvm::Win64EH::UOP_WideSaveRegsR4R11LR.

Referenced by ARMEmitUnwindInfo(), checkARMPackedEpilog(), and getARMOffsetInProlog().

ARMEmitRuntimeFunction()

void ARMEmitRuntimeFunction ( MCStreamer & streamer, const WinEH::FrameInfo * info )

static

Definition at line 3378 of file MCWin64EH.cpp.

References llvm::MCSymbolRefExpr::create(), llvm::MCStreamer::emitInt32(), EmitSymbolRefWithOfs(), llvm::MCStreamer::emitValue(), llvm::MCStreamer::emitValueToAlignment(), llvm::MCStreamer::getContext(), info, and llvm::MCSymbolRefExpr::VK_COFF_IMGREL32.

Referenced by llvm::Win64EH::ARMUnwindEmitter::Emit().

ARMEmitUnwindCode()

void ARMEmitUnwindCode ( MCStreamer & streamer, const WinEH::Instruction & inst )

static

Definition at line 2451 of file MCWin64EH.cpp.

References assert(), llvm::MCStreamer::emitInt8(), llvm_unreachable, llvm::WinEH::Instruction::Offset, llvm::WinEH::Instruction::Operation, llvm::WinEH::Instruction::Register, llvm::Win64EH::UOP_AllocHuge, llvm::Win64EH::UOP_AllocLarge, llvm::Win64EH::UOP_AllocSmall, llvm::Win64EH::UOP_Custom, llvm::Win64EH::UOP_End, llvm::Win64EH::UOP_EndNop, llvm::Win64EH::UOP_Nop, llvm::Win64EH::UOP_SaveFRegD0D15, llvm::Win64EH::UOP_SaveFRegD16D31, llvm::Win64EH::UOP_SaveFRegD8D15, llvm::Win64EH::UOP_SaveLR, llvm::Win64EH::UOP_SaveRegMask, llvm::Win64EH::UOP_SaveRegsR4R7LR, llvm::Win64EH::UOP_SaveSP, llvm::Win64EH::UOP_WideAllocHuge, llvm::Win64EH::UOP_WideAllocLarge, llvm::Win64EH::UOP_WideAllocMedium, llvm::Win64EH::UOP_WideEndNop, llvm::Win64EH::UOP_WideNop, llvm::Win64EH::UOP_WideSaveRegMask, and llvm::Win64EH::UOP_WideSaveRegsR4R11LR.

Referenced by ARMEmitUnwindInfo().

ARMEmitUnwindInfo()

void ARMEmitUnwindInfo ( MCStreamer & streamer, WinEH::FrameInfo * info, bool TryPacked = true )

static

Definition at line 3122 of file MCWin64EH.cpp.

References ARMCountOfUnwindCodes(), ARMEmitUnwindCode(), assert(), checkARMInstructions(), checkARMPackedEpilog(), llvm::MCConstantExpr::create(), llvm::MCSymbolRefExpr::create(), llvm::MCBinaryExpr::createOr(), llvm::MCContext::createTempSymbol(), llvm::MCStreamer::emitInt32(), llvm::MCStreamer::emitInt8(), llvm::MCStreamer::emitLabel(), llvm::MCStreamer::emitValue(), llvm::MCStreamer::emitValueToAlignment(), Epilog, FindMatchingEpilog(), getARMOffsetInProlog(), llvm::MCStreamer::getContext(), GetOptionalAbsDifference(), GetSubDivExpr(), I, info, isARMTerminator(), llvm::report_fatal_error(), llvm::MCContext::reportError(), tryARMPackedUnwind(), and llvm::MCSymbolRefExpr::VK_COFF_IMGREL32.

Referenced by llvm::Win64EH::ARMUnwindEmitter::Emit(), and llvm::Win64EH::ARMUnwindEmitter::EmitUnwindInfo().

checkARM64Instructions()

void checkARM64Instructions ( MCStreamer & Streamer, ArrayRef< WinEH::Instruction > Insns, const MCSymbol * Begin, const MCSymbol * End, StringRef Name, StringRef Type )

static

Definition at line 1080 of file MCWin64EH.cpp.

References llvm::MCStreamer::getContext(), GetOptionalAbsDifference(), I, llvm::MCContext::reportError(), llvm::ArrayRef< T >::size(), llvm::Win64EH::UOP_ClearUnwoundToCall, llvm::Win64EH::UOP_Context, llvm::Win64EH::UOP_ECContext, llvm::Win64EH::UOP_PushMachFrame, and llvm::Win64EH::UOP_TrapFrame.

Referenced by ARM64FindSegmentsInFunction().

checkARM64PackedEpilog()

int checkARM64PackedEpilog ( MCStreamer & streamer, WinEH::FrameInfo * info, WinEH::FrameInfo::Segment * Seg, int PrologCodeBytes )

static

Definition at line 1568 of file MCWin64EH.cpp.

References ARM64CountOfUnwindCodes(), Epilog, llvm::WinEH::FrameInfo::Segment::Epilogs, getARM64OffsetInProlog(), info, llvm::WinEH::FrameInfo::Segment::Length, llvm::Offset, and llvm::WinEH::FrameInfo::Segment::Offset.

Referenced by ARM64EmitUnwindInfoForSegment().

checkARMInstructions()

void checkARMInstructions ( MCStreamer & Streamer, ArrayRef< WinEH::Instruction > Insns, const MCSymbol * Begin, const MCSymbol * End, StringRef Name, StringRef Type )

static

Definition at line 2413 of file MCWin64EH.cpp.

References ARMCountOfInstructionBytes(), llvm::MCStreamer::getContext(), GetOptionalAbsDifference(), and llvm::MCContext::reportError().

Referenced by ARMEmitUnwindInfo().

checkARMPackedEpilog()

int checkARMPackedEpilog ( MCStreamer & streamer, WinEH::FrameInfo * info, int PrologCodeBytes )

static

Definition at line 2623 of file MCWin64EH.cpp.

References ARMCountOfInstructionBytes(), ARMCountOfUnwindCodes(), Epilog, getARMOffsetInProlog(), GetOptionalAbsDifference(), info, and llvm::Offset.

Referenced by ARMEmitUnwindInfo().

CountOfUnwindCodes()

uint8_t CountOfUnwindCodes ( std::vector< WinEH::Instruction > & Insns )

static

Definition at line 73 of file MCWin64EH.cpp.

References llvm::Count, I, llvm_unreachable, llvm::Win64EH::UOP_AllocLarge, llvm::Win64EH::UOP_AllocSmall, llvm::Win64EH::UOP_PushMachFrame, llvm::Win64EH::UOP_PushNonVol, llvm::Win64EH::UOP_SaveNonVol, llvm::Win64EH::UOP_SaveNonVolBig, llvm::Win64EH::UOP_SaveXMM128, llvm::Win64EH::UOP_SaveXMM128Big, and llvm::Win64EH::UOP_SetFPReg.

Referenced by EmitUnwindInfo().

EmitAbsDifference()

void EmitAbsDifference ( MCStreamer & Streamer, const MCSymbol * LHS, const MCSymbol * RHS )

static

Definition at line 101 of file MCWin64EH.cpp.

References llvm::MCSymbolRefExpr::create(), llvm::MCBinaryExpr::createSub(), llvm::MCStreamer::emitValue(), llvm::MCStreamer::getContext(), LHS, and RHS.

Referenced by EmitUnwindCode(), EmitUnwindInfo(), and EmitUnwindInfoV3().

EmitAbsDifference16()

void EmitAbsDifference16 ( MCStreamer & Streamer, const MCSymbol * LHS, const MCSymbol * RHS )

static

Emit a 16-bit (2-byte LE) label difference.

If the difference is evaluatable at this point, validate that it fits in [0, UINT16_MAX] and emit it as a constant; otherwise emit a 16-bit fixup.

Definition at line 113 of file MCWin64EH.cpp.

References llvm::MCSymbolRefExpr::create(), llvm::MCBinaryExpr::createSub(), llvm::MCStreamer::emitValue(), llvm::MCObjectStreamer::getAssembler(), llvm::MCStreamer::getContext(), LHS, RHS, and llvm::Value.

Referenced by EmitUnwindInfoV3().

EmitRuntimeFunction()

void EmitRuntimeFunction ( MCStreamer & streamer, const WinEH::FrameInfo * info )

static

Definition at line 233 of file MCWin64EH.cpp.

References llvm::MCSymbolRefExpr::create(), EmitSymbolRefWithOfs(), llvm::MCStreamer::emitValue(), llvm::MCStreamer::emitValueToAlignment(), llvm::MCStreamer::getContext(), info, and llvm::MCSymbolRefExpr::VK_COFF_IMGREL32.

Referenced by llvm::Win64EH::UnwindEmitter::Emit(), EmitUnwindInfo(), and EmitUnwindInfoV3().

EmitSymbolRefWithOfs() [1/2]

void EmitSymbolRefWithOfs ( MCStreamer & streamer, const MCSymbol * Base, const MCSymbol * Other )

static

Definition at line 220 of file MCWin64EH.cpp.

References llvm::sampleprof::Base, llvm::MCSymbolRefExpr::create(), llvm::MCBinaryExpr::createAdd(), llvm::MCBinaryExpr::createSub(), llvm::MCStreamer::emitValue(), llvm::MCStreamer::getContext(), llvm::Other, and llvm::MCSymbolRefExpr::VK_COFF_IMGREL32.

EmitSymbolRefWithOfs() [2/2]

void EmitSymbolRefWithOfs ( MCStreamer & streamer, const MCSymbol * Base, int64_t Offset )

static

Definition at line 209 of file MCWin64EH.cpp.

References llvm::sampleprof::Base, llvm::MCConstantExpr::create(), llvm::MCSymbolRefExpr::create(), llvm::MCBinaryExpr::createAdd(), llvm::MCStreamer::emitValue(), llvm::MCStreamer::getContext(), llvm::Offset, and llvm::MCSymbolRefExpr::VK_COFF_IMGREL32.

Referenced by ARM64EmitRuntimeFunction(), ARMEmitRuntimeFunction(), and EmitRuntimeFunction().

EmitUnwindCode()

void EmitUnwindCode ( MCStreamer & streamer, const MCSymbol * begin, WinEH::Instruction & inst )

static

Definition at line 132 of file MCWin64EH.cpp.

References EmitAbsDifference(), llvm::MCStreamer::emitInt16(), llvm::MCStreamer::emitInt8(), llvm::MCStreamer::getContext(), llvm::WinEH::Instruction::Label, llvm_unreachable, llvm::WinEH::Instruction::Offset, llvm::WinEH::Instruction::Operation, llvm::WinEH::Instruction::Register, llvm::MCContext::reportError(), llvm::Win64EH::UOP_AllocLarge, llvm::Win64EH::UOP_AllocSmall, llvm::Win64EH::UOP_Push2, llvm::Win64EH::UOP_PushMachFrame, llvm::Win64EH::UOP_PushNonVol, llvm::Win64EH::UOP_SaveNonVol, llvm::Win64EH::UOP_SaveNonVolBig, llvm::Win64EH::UOP_SaveXMM128, llvm::Win64EH::UOP_SaveXMM128Big, and llvm::Win64EH::UOP_SetFPReg.

Referenced by EmitUnwindInfo().

EmitUnwindInfo()

void EmitUnwindInfo ( MCStreamer & streamer, WinEH::FrameInfo * info )

static

Definition at line 801 of file MCWin64EH.cpp.

References llvm::MCObjectStreamer::addFixup(), llvm::MCObjectStreamer::appendContents(), assert(), CountOfUnwindCodes(), llvm::MCSymbolRefExpr::create(), llvm::MCContext::createTempSymbol(), EmitAbsDifference(), llvm::MCStreamer::emitInt16(), llvm::MCStreamer::emitInt32(), llvm::MCStreamer::emitInt8(), llvm::MCStreamer::emitLabel(), EmitRuntimeFunction(), EmitUnwindCode(), EmitUnwindInfoV3(), llvm::MCStreamer::emitValue(), llvm::MCStreamer::emitValueToAlignment(), llvm::MCObjectStreamer::ensureHeadroom(), Epilog, llvm::FK_Data_2, llvm::MCObjectStreamer::getAssembler(), llvm::MCStreamer::getContext(), GetOptionalAbsDifference(), info, llvm::WinEH::Instruction::Offset, llvm::WinEH::Instruction::Operation, llvm::WinEH::Instruction::Register, llvm::MCContext::reportError(), llvm::reverse(), llvm::Win64EH::UNW_ChainInfo, llvm::Win64EH::UNW_ExceptionHandler, llvm::Win64EH::UNW_TerminateHandler, llvm::Win64EH::UOP_Epilog, llvm::Win64EH::UOP_Push2, llvm::Win64EH::UOP_SetFPReg, and llvm::MCSymbolRefExpr::VK_COFF_IMGREL32.

Referenced by llvm::Win64EH::UnwindEmitter::Emit(), and llvm::Win64EH::UnwindEmitter::EmitUnwindInfo().

EmitUnwindInfoV3()

void EmitUnwindInfoV3 ( MCStreamer & Streamer, WinEH::FrameInfo * Info )

static

Emit V3 UNWIND_INFO for a single frame.

Definition at line 428 of file MCWin64EH.cpp.

References llvm::MCObjectStreamer::addFixup(), llvm::SmallVectorImpl< T >::append(), llvm::MCObjectStreamer::appendContents(), assert(), B(), llvm::sampleprof::Base, llvm::MCConstantExpr::create(), llvm::MCSymbolRefExpr::create(), llvm::MCBinaryExpr::createLShr(), llvm::MCBinaryExpr::createSub(), EmitAbsDifference(), EmitAbsDifference16(), llvm::MCStreamer::emitInt16(), llvm::MCStreamer::emitInt32(), llvm::MCStreamer::emitInt8(), llvm::MCStreamer::emitLabel(), EmitRuntimeFunction(), llvm::MCStreamer::emitValue(), llvm::MCStreamer::emitValueToAlignment(), llvm::Win64EH::EncodeWOD(), llvm::MCObjectStreamer::ensureHeadroom(), Epilog, llvm::Win64EH::EPILOG_INFO_LARGE, EpilogIpOffsetsMatch(), FindInPool(), llvm::FK_Data_1, llvm::FK_Data_2, llvm::MCObjectStreamer::getAssembler(), llvm::MCStreamer::getContext(), GetOptionalAbsDifference(), I, llvm::Offset, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::reportFatalUsageError(), llvm::SmallVectorTemplateCommon< T, typename >::size(), llvm::Win64EH::UNW_ChainInfo, llvm::Win64EH::UNW_ExceptionHandler, llvm::Win64EH::UNW_FlagLarge, llvm::Win64EH::UNW_TerminateHandler, and llvm::MCSymbolRefExpr::VK_COFF_IMGREL32.

Referenced by EmitUnwindInfo().

EpilogIpOffsetsMatch()

bool EpilogIpOffsetsMatch ( const WinEH::FrameInfo::Epilog & A, const WinEH::FrameInfo::Epilog & B, const MCAssembler & Asm )

static

Compare the relative IP offset arrays of two epilogs.

Definition at line 413 of file MCWin64EH.cpp.

References A(), B(), GetOptionalAbsDifference(), and I.

Referenced by EmitUnwindInfoV3().

FindInPool()

std::optional< uint16_t > FindInPool ( ArrayRef< uint8_t > Haystack, ArrayRef< uint8_t > Needle )

static

Try to find Needle as a contiguous subsequence within Haystack.

Returns the byte offset if found, or std::nullopt.

Definition at line 402 of file MCWin64EH.cpp.

References assert(), llvm::ArrayRef< T >::begin(), llvm::ArrayRef< T >::empty(), and llvm::ArrayRef< T >::end().

Referenced by EmitUnwindInfoV3().

FindMatchingEpilog()

MCSymbol * FindMatchingEpilog ( const std::vector< WinEH::Instruction > & EpilogInstrs, const std::vector< MCSymbol * > & Epilogs, const WinEH::FrameInfo * info )

static

Definition at line 1465 of file MCWin64EH.cpp.

References assert(), and info.

Referenced by ARM64ProcessEpilogs(), and ARMEmitUnwindInfo().

GetAbsDifference()

int64_t GetAbsDifference ( MCStreamer & Streamer, const MCSymbol * LHS, const MCSymbol * RHS )

static

Definition at line 1071 of file MCWin64EH.cpp.

References GetOptionalAbsDifference(), LHS, llvm::report_fatal_error(), and RHS.

Referenced by ARM64EmitUnwindInfo(), and ARM64FindSegmentsInFunction().

getARM64OffsetInProlog()

int getARM64OffsetInProlog ( const std::vector< WinEH::Instruction > & Prolog, const std::vector< WinEH::Instruction > & Epilog )

static

Definition at line 1547 of file MCWin64EH.cpp.

References ARM64CountOfUnwindCodes(), Epilog, I, and Prolog.

Referenced by ARM64ProcessEpilogs(), and checkARM64PackedEpilog().

getARMOffsetInProlog()

int getARMOffsetInProlog ( const std::vector< WinEH::Instruction > & Prolog, const std::vector< WinEH::Instruction > & Epilog, bool CanTweakProlog )

static

Definition at line 2587 of file MCWin64EH.cpp.

References ARMCountOfUnwindCodes(), Epilog, I, Prolog, llvm::Win64EH::UOP_End, llvm::Win64EH::UOP_EndNop, and llvm::Win64EH::UOP_WideEndNop.

Referenced by ARMEmitUnwindInfo(), and checkARMPackedEpilog().

GetOptionalAbsDifference() [1/2]

std::optional< int64_t > GetOptionalAbsDifference ( const MCAssembler & Assembler, const MCSymbol * LHS, const MCSymbol * RHS )

static

Definition at line 246 of file MCWin64EH.cpp.

References llvm::MCSymbolRefExpr::create(), llvm::MCBinaryExpr::createSub(), llvm::MCAssembler::getContext(), LHS, and RHS.

Referenced by ARMEmitUnwindInfo(), checkARM64Instructions(), checkARMInstructions(), checkARMPackedEpilog(), EmitUnwindInfo(), EmitUnwindInfoV3(), EpilogIpOffsetsMatch(), GetAbsDifference(), GetOptionalAbsDifference(), and tryARMPackedUnwind().

GetOptionalAbsDifference() [2/2]

std::optional< int64_t > GetOptionalAbsDifference ( MCStreamer & Streamer, const MCSymbol * LHS, const MCSymbol * RHS )

static

Definition at line 1064 of file MCWin64EH.cpp.

References llvm::MCObjectStreamer::getAssembler(), GetOptionalAbsDifference(), LHS, and RHS.

GetSubDivExpr()

const MCExpr * GetSubDivExpr ( MCStreamer & Streamer, const MCSymbol * LHS, const MCSymbol * RHS, int Div )

static

Definition at line 1052 of file MCWin64EH.cpp.

References llvm::MCConstantExpr::create(), llvm::MCSymbolRefExpr::create(), llvm::MCBinaryExpr::createDiv(), llvm::MCBinaryExpr::createSub(), llvm::MCStreamer::getContext(), LHS, and RHS.

Referenced by ARMEmitUnwindInfo().

isARMTerminator()

bool isARMTerminator ( const WinEH::Instruction & inst )

static

Definition at line 2438 of file MCWin64EH.cpp.

References llvm::WinEH::Instruction::Operation, llvm::Win64EH::UOP_End, llvm::Win64EH::UOP_EndNop, and llvm::Win64EH::UOP_WideEndNop.

Referenced by ARMEmitUnwindInfo().

parseRegMask()

bool parseRegMask ( unsigned Mask, bool & HasLR, bool & HasR11, unsigned & Folded, int & IntRegs )

static

Definition at line 2680 of file MCWin64EH.cpp.

References llvm::First, IntRegs, and N.

Referenced by tryARMPackedUnwind().

simplifyARM64Opcodes()

void simplifyARM64Opcodes ( std::vector< WinEH::Instruction > & Instructions, bool Reverse )

static

Definition at line 1490 of file MCWin64EH.cpp.

References llvm::Reverse, llvm::reverse_conditionally(), llvm::Win64EH::UOP_AddFP, llvm::Win64EH::UOP_SaveFPLR, llvm::Win64EH::UOP_SaveFPLRX, llvm::Win64EH::UOP_SaveNext, llvm::Win64EH::UOP_SaveR19R20X, llvm::Win64EH::UOP_SaveRegP, llvm::Win64EH::UOP_SaveRegPX, and llvm::Win64EH::UOP_SetFP.

Referenced by ARM64EmitUnwindInfo().

tryARM64PackedUnwind()

bool tryARM64PackedUnwind ( WinEH::FrameInfo * info, uint32_t FuncLength, int PackedEpilogOffset )

static

Definition at line 1611 of file MCWin64EH.cpp.

References assert(), H, info, IntRegs, llvm::WinEH::Instruction::Offset, llvm::WinEH::Instruction::Operation, llvm::WinEH::Instruction::Register, llvm::report_fatal_error(), llvm::Win64EH::UOP_AddFP, llvm::Win64EH::UOP_AllocLarge, llvm::Win64EH::UOP_AllocMedium, llvm::Win64EH::UOP_AllocSmall, llvm::Win64EH::UOP_AllocZ, llvm::Win64EH::UOP_ClearUnwoundToCall, llvm::Win64EH::UOP_Context, llvm::Win64EH::UOP_ECContext, llvm::Win64EH::UOP_End, llvm::Win64EH::UOP_Nop, llvm::Win64EH::UOP_PACSignLR, llvm::Win64EH::UOP_PushMachFrame, llvm::Win64EH::UOP_SaveAnyRegD, llvm::Win64EH::UOP_SaveAnyRegDP, llvm::Win64EH::UOP_SaveAnyRegDPX, llvm::Win64EH::UOP_SaveAnyRegDX, llvm::Win64EH::UOP_SaveAnyRegI, llvm::Win64EH::UOP_SaveAnyRegIP, llvm::Win64EH::UOP_SaveAnyRegIPX, llvm::Win64EH::UOP_SaveAnyRegIX, llvm::Win64EH::UOP_SaveAnyRegQ, llvm::Win64EH::UOP_SaveAnyRegQP, llvm::Win64EH::UOP_SaveAnyRegQPX, llvm::Win64EH::UOP_SaveAnyRegQX, llvm::Win64EH::UOP_SaveFPLR, llvm::Win64EH::UOP_SaveFPLRX, llvm::Win64EH::UOP_SaveFReg, llvm::Win64EH::UOP_SaveFRegP, llvm::Win64EH::UOP_SaveFRegPX, llvm::Win64EH::UOP_SaveFRegX, llvm::Win64EH::UOP_SaveLRPair, llvm::Win64EH::UOP_SaveNext, llvm::Win64EH::UOP_SavePReg, llvm::Win64EH::UOP_SaveR19R20X, llvm::Win64EH::UOP_SaveReg, llvm::Win64EH::UOP_SaveRegP, llvm::Win64EH::UOP_SaveRegPX, llvm::Win64EH::UOP_SaveRegX, llvm::Win64EH::UOP_SaveZReg, llvm::Win64EH::UOP_SetFP, and llvm::Win64EH::UOP_TrapFrame.

Referenced by ARM64EmitUnwindInfoForSegment().

tryARMPackedUnwind()

bool tryARMPackedUnwind ( MCStreamer & streamer, WinEH::FrameInfo * info, uint32_t FuncLength )

static

Definition at line 2720 of file MCWin64EH.cpp.

References ARMCountOfInstructionBytes(), assert(), llvm::CallingConv::C, Epilog, GetOptionalAbsDifference(), H, info, IntRegs, llvm_unreachable, llvm::WinEH::Instruction::Offset, llvm::WinEH::Instruction::Operation, parseRegMask(), Reg, llvm::WinEH::Instruction::Register, llvm::Win64EH::UOP_AllocHuge, llvm::Win64EH::UOP_AllocLarge, llvm::Win64EH::UOP_AllocSmall, llvm::Win64EH::UOP_Custom, llvm::Win64EH::UOP_End, llvm::Win64EH::UOP_EndNop, llvm::Win64EH::UOP_Nop, llvm::Win64EH::UOP_SaveFRegD0D15, llvm::Win64EH::UOP_SaveFRegD16D31, llvm::Win64EH::UOP_SaveFRegD8D15, llvm::Win64EH::UOP_SaveLR, llvm::Win64EH::UOP_SaveRegMask, llvm::Win64EH::UOP_SaveRegsR4R7LR, llvm::Win64EH::UOP_SaveSP, llvm::Win64EH::UOP_WideAllocHuge, llvm::Win64EH::UOP_WideAllocLarge, llvm::Win64EH::UOP_WideAllocMedium, llvm::Win64EH::UOP_WideEndNop, llvm::Win64EH::UOP_WideNop, llvm::Win64EH::UOP_WideSaveRegMask, and llvm::Win64EH::UOP_WideSaveRegsR4R11LR.

Referenced by ARMEmitUnwindInfo().