1 //===-- WinException.h - Windows Exception Handling ----------*- C++ -*--===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains support for writing windows exception info into asm files.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_LIB_CODEGEN_ASMPRINTER_WIN64EXCEPTION_H
15 #define LLVM_LIB_CODEGEN_ASMPRINTER_WIN64EXCEPTION_H
17 #include "EHStreamer.h"
22 class MachineFunction;
26 class LLVM_LIBRARY_VISIBILITY WinException : public EHStreamer {
27 /// Per-function flag to indicate if personality info should be emitted.
28 bool shouldEmitPersonality = false;
30 /// Per-function flag to indicate if the LSDA should be emitted.
31 bool shouldEmitLSDA = false;
33 /// Per-function flag to indicate if frame moves info should be emitted.
34 bool shouldEmitMoves = false;
36 /// True if this is a 64-bit target and we should use image relative offsets.
37 bool useImageRel32 = false;
39 void emitCSpecificHandlerTable();
41 /// Emit the EH table data for 32-bit and 64-bit functions using
42 /// the __CxxFrameHandler3 personality.
43 void emitCXXFrameHandler3Table(const MachineFunction *MF);
45 /// Emit the EH table data for _except_handler3 and _except_handler4
46 /// personality functions. These are only used on 32-bit and do not use CFI
48 void emitExceptHandlerTable(const MachineFunction *MF);
50 void extendIP2StateTable(const MachineFunction *MF, const Function *ParentF,
51 WinEHFuncInfo &FuncInfo);
53 /// Emits the label used with llvm.x86.seh.recoverfp, which is used by
54 /// outlined funclets.
55 void emitEHRegistrationOffsetLabel(const WinEHFuncInfo &FuncInfo,
56 StringRef FLinkageName);
58 const MCExpr *create32bitRef(const MCSymbol *Value);
59 const MCExpr *create32bitRef(const GlobalValue *GV);
62 //===--------------------------------------------------------------------===//
65 WinException(AsmPrinter *A);
66 ~WinException() override;
68 /// Emit all exception information that should come after the content.
69 void endModule() override;
71 /// Gather pre-function exception information. Assumes being emitted
72 /// immediately after the function entry point.
73 void beginFunction(const MachineFunction *MF) override;
75 /// Gather and emit post-function exception information.
76 void endFunction(const MachineFunction *) override;