MCWin64EH.cpp File Reference

#include "llvm/MC/MCWin64EH.h"
#include "llvm/ADT/Twine.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/Support/Win64EH.h"

Include dependency graph for MCWin64EH.cpp:

Go to the source code of this file.

Namespaces
	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	EmitUnwindCode (MCStreamer &streamer, const MCSymbol *begin, WinEH::Instruction &inst)
static void	EmitSymbolRefWithOfs (MCStreamer &streamer, const MCSymbol *Base, const MCSymbol *Other)
static void	EmitRuntimeFunction (MCStreamer &streamer, const WinEH::FrameInfo *info)
static void	EmitUnwindInfo (MCStreamer &streamer, WinEH::FrameInfo *info)
static int64_t	GetAbsDifference (MCStreamer &Streamer, const MCSymbol *LHS, const MCSymbol *RHS)
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	simplifyOpcodes (std::vector< WinEH::Instruction > &Instructions, bool Reverse)
static int	getOffsetInProlog (const std::vector< WinEH::Instruction > &Prolog, const std::vector< WinEH::Instruction > &Epilog)
static int	checkPackedEpilog (MCStreamer &streamer, WinEH::FrameInfo *info, int PrologCodeBytes)
static bool	tryPackedUnwind (WinEH::FrameInfo *info, uint32_t FuncLength, int PackedEpilogOffset)
static void	ARM64EmitUnwindInfo (MCStreamer &streamer, WinEH::FrameInfo *info, bool TryPacked=true)
static void	ARM64EmitRuntimeFunction (MCStreamer &streamer, const WinEH::FrameInfo *info)

Function Documentation

ARM64CountOfUnwindCodes()

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

static

Definition at line 269 of file MCWin64EH.cpp.

References I, llvm_unreachable, llvm::Win64EH::UOP_AddFP, llvm::Win64EH::UOP_AllocLarge, llvm::Win64EH::UOP_AllocMedium, llvm::Win64EH::UOP_AllocSmall, llvm::Win64EH::UOP_ClearUnwoundToCall, llvm::Win64EH::UOP_Context, llvm::Win64EH::UOP_End, llvm::Win64EH::UOP_Nop, llvm::Win64EH::UOP_PushMachFrame, 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_SaveR19R20X, llvm::Win64EH::UOP_SaveReg, llvm::Win64EH::UOP_SaveRegP, llvm::Win64EH::UOP_SaveRegPX, llvm::Win64EH::UOP_SaveRegX, llvm::Win64EH::UOP_SetFP, and llvm::Win64EH::UOP_TrapFrame.

Referenced by ARM64EmitUnwindInfo(), checkPackedEpilog(), and getOffsetInProlog().

ARM64EmitRuntimeFunction()

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

static

Definition at line 1105 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()

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

static

Definition at line 354 of file MCWin64EH.cpp.

References assert(), b, llvm::MCStreamer::emitInt8(), llvm_unreachable, 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_ClearUnwoundToCall, llvm::Win64EH::UOP_Context, llvm::Win64EH::UOP_End, llvm::Win64EH::UOP_Nop, llvm::Win64EH::UOP_PushMachFrame, 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_SaveR19R20X, llvm::Win64EH::UOP_SaveReg, llvm::Win64EH::UOP_SaveRegP, llvm::Win64EH::UOP_SaveRegPX, llvm::Win64EH::UOP_SaveRegX, llvm::Win64EH::UOP_SetFP, and llvm::Win64EH::UOP_TrapFrame.

Referenced by ARM64EmitUnwindInfo().

ARM64EmitUnwindInfo()

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

static

Definition at line 905 of file MCWin64EH.cpp.

References ARM64CountOfUnwindCodes(), ARM64EmitUnwindCode(), assert(), c, checkPackedEpilog(), llvm::MapVector< KeyT, ValueT, MapType, VectorType >::clear(), llvm::MCSymbolRefExpr::create(), llvm::MCContext::createTempSymbol(), llvm::MCStreamer::emitInt32(), llvm::MCStreamer::emitInt8(), llvm::MCStreamer::emitLabel(), llvm::MCStreamer::emitValue(), llvm::MCStreamer::emitValueToAlignment(), llvm::MapVector< KeyT, ValueT, MapType, VectorType >::end(), llvm::MapVector< KeyT, ValueT, MapType, VectorType >::find(), FindMatchingEpilog(), GetAbsDifference(), llvm::MCStreamer::getContext(), getOffsetInProlog(), i, I, info, llvm::MapVector< KeyT, ValueT, MapType, VectorType >::lookup(), llvm::report_fatal_error(), llvm::MCContext::reportError(), simplifyOpcodes(), tryPackedUnwind(), and llvm::MCSymbolRefExpr::VK_COFF_IMGREL32.

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

checkPackedEpilog()

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

static

Definition at line 629 of file MCWin64EH.cpp.

References ARM64CountOfUnwindCodes(), Epilog, GetAbsDifference(), getOffsetInProlog(), info, and Offset.

Referenced by ARM64EmitUnwindInfo().

CountOfUnwindCodes()

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

static

Definition at line 25 of file MCWin64EH.cpp.

References 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()

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

static

Definition at line 53 of file MCWin64EH.cpp.

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

Referenced by EmitUnwindCode(), and EmitUnwindInfo().

EmitRuntimeFunction()

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

static

Definition at line 143 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(), and EmitUnwindInfo().

EmitSymbolRefWithOfs()

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

static

Definition at line 130 of file MCWin64EH.cpp.

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

Referenced by ARM64EmitRuntimeFunction(), and EmitRuntimeFunction().

EmitUnwindCode()

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

static

Definition at line 62 of file MCWin64EH.cpp.

References b2, llvm::sys::path::begin(), EmitAbsDifference(), llvm::MCStreamer::emitInt16(), llvm::MCStreamer::emitInt8(), llvm::WinEH::Instruction::Label, llvm_unreachable, llvm::WinEH::Instruction::Offset, llvm::WinEH::Instruction::Operation, llvm::WinEH::Instruction::Register, 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().

EmitUnwindInfo()

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

static

Definition at line 155 of file MCWin64EH.cpp.

References assert(), c, CountOfUnwindCodes(), llvm::MCSymbolRefExpr::create(), llvm::MCContext::createTempSymbol(), EmitAbsDifference(), llvm::MCStreamer::emitInt16(), llvm::MCStreamer::emitInt32(), llvm::MCStreamer::emitInt8(), llvm::MCStreamer::emitLabel(), EmitRuntimeFunction(), EmitUnwindCode(), llvm::MCStreamer::emitValue(), llvm::MCStreamer::emitValueToAlignment(), llvm::MCStreamer::getContext(), info, llvm::WinEH::Instruction::Offset, llvm::WinEH::Instruction::Operation, llvm::WinEH::Instruction::Register, llvm::Win64EH::UNW_ChainInfo, llvm::Win64EH::UNW_ExceptionHandler, llvm::Win64EH::UNW_TerminateHandler, llvm::Win64EH::UOP_SetFPReg, and llvm::MCSymbolRefExpr::VK_COFF_IMGREL32.

Referenced by llvm::Win64EH::UnwindEmitter::EmitUnwindInfo().

FindMatchingEpilog()

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

static

Definition at line 521 of file MCWin64EH.cpp.

References assert(), i, info, and llvm::Match.

Referenced by ARM64EmitUnwindInfo().

GetAbsDifference()

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

static

Definition at line 253 of file MCWin64EH.cpp.

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

Referenced by ARM64EmitUnwindInfo(), and checkPackedEpilog().

getOffsetInProlog()

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

static

Definition at line 609 of file MCWin64EH.cpp.

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

Referenced by ARM64EmitUnwindInfo(), and checkPackedEpilog().

simplifyOpcodes()

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

static

Definition at line 546 of file MCWin64EH.cpp.

References Instructions, 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().

tryPackedUnwind()

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

static

Definition at line 670 of file MCWin64EH.cpp.

References info, and llvm::Win64EH::UOP_SetFP.

Referenced by ARM64EmitUnwindInfo().