1//===-- DwarfException.h - Dwarf Exception Framework -----------*- C++ -*--===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file contains support for writing dwarf exception info into asm files.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFEXCEPTION_H
15#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFEXCEPTION_H
16
17#include "EHStreamer.h"
18#include "llvm/CodeGen/AsmPrinter.h"
19
20namespace llvm {
21class MachineFunction;
22class ARMTargetStreamer;
23
24class LLVM_LIBRARY_VISIBILITY DwarfCFIExceptionBase : public EHStreamer {
25protected:
26  DwarfCFIExceptionBase(AsmPrinter *A);
27
28  /// Per-function flag to indicate if frame CFI info should be emitted.
29  bool shouldEmitCFI;
30
31  void markFunctionEnd() override;
32};
33
34class LLVM_LIBRARY_VISIBILITY DwarfCFIException : public DwarfCFIExceptionBase {
35  /// Per-function flag to indicate if .cfi_personality should be emitted.
36  bool shouldEmitPersonality;
37
38  /// Per-function flag to indicate if .cfi_lsda should be emitted.
39  bool shouldEmitLSDA;
40
41  /// Per-function flag to indicate if frame moves info should be emitted.
42  bool shouldEmitMoves;
43
44  AsmPrinter::CFIMoveType moveTypeModule;
45
46public:
47  //===--------------------------------------------------------------------===//
48  // Main entry points.
49  //
50  DwarfCFIException(AsmPrinter *A);
51  ~DwarfCFIException() override;
52
53  /// Emit all exception information that should come after the content.
54  void endModule() override;
55
56  /// Gather pre-function exception information.  Assumes being emitted
57  /// immediately after the function entry point.
58  void beginFunction(const MachineFunction *MF) override;
59
60  /// Gather and emit post-function exception information.
61  void endFunction(const MachineFunction *) override;
62};
63
64class LLVM_LIBRARY_VISIBILITY ARMException : public DwarfCFIExceptionBase {
65  void emitTypeInfos(unsigned TTypeEncoding) override;
66  ARMTargetStreamer &getTargetStreamer();
67
68public:
69  //===--------------------------------------------------------------------===//
70  // Main entry points.
71  //
72  ARMException(AsmPrinter *A);
73  ~ARMException() override;
74
75  /// Emit all exception information that should come after the content.
76  void endModule() override;
77
78  /// Gather pre-function exception information.  Assumes being emitted
79  /// immediately after the function entry point.
80  void beginFunction(const MachineFunction *MF) override;
81
82  /// Gather and emit post-function exception information.
83  void endFunction(const MachineFunction *) override;
84};
85} // End of namespace llvm
86
87#endif
88