llvm-project/llvm/lib/CodeGen/AsmPrinter/WinException.h

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//===-- WinException.h - Windows Exception Handling ----------*- C++ -*--===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains support for writing windows exception info into asm files.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_WIN64EXCEPTION_H
#define LLVM_LIB_CODEGEN_ASMPRINTER_WIN64EXCEPTION_H
#include "EHStreamer.h"
namespace llvm {
class Function;
class GlobalValue;
class MachineFunction;
class MCExpr;
struct WinEHFuncInfo;
class LLVM_LIBRARY_VISIBILITY WinException : public EHStreamer {
/// Per-function flag to indicate if personality info should be emitted.
bool shouldEmitPersonality = false;
/// Per-function flag to indicate if the LSDA should be emitted.
bool shouldEmitLSDA = false;
/// Per-function flag to indicate if frame moves info should be emitted.
bool shouldEmitMoves = false;
/// True if this is a 64-bit target and we should use image relative offsets.
bool useImageRel32 = false;
void emitCSpecificHandlerTable();
/// Emit the EH table data for 32-bit and 64-bit functions using
/// the __CxxFrameHandler3 personality.
void emitCXXFrameHandler3Table(const MachineFunction *MF);
/// Emit the EH table data for _except_handler3 and _except_handler4
/// personality functions. These are only used on 32-bit and do not use CFI
/// tables.
void emitExceptHandlerTable(const MachineFunction *MF);
void extendIP2StateTable(const MachineFunction *MF, const Function *ParentF,
WinEHFuncInfo &FuncInfo);
/// Emits the label used with llvm.x86.seh.recoverfp, which is used by
/// outlined funclets.
void emitEHRegistrationOffsetLabel(const WinEHFuncInfo &FuncInfo,
StringRef FLinkageName);
const MCExpr *create32bitRef(const MCSymbol *Value);
const MCExpr *create32bitRef(const GlobalValue *GV);
public:
//===--------------------------------------------------------------------===//
// Main entry points.
//
WinException(AsmPrinter *A);
~WinException() override;
/// Emit all exception information that should come after the content.
void endModule() override;
/// Gather pre-function exception information. Assumes being emitted
/// immediately after the function entry point.
void beginFunction(const MachineFunction *MF) override;
/// Gather and emit post-function exception information.
void endFunction(const MachineFunction *) override;
};
}
#endif