tools/llvm-readobj/ARMWinEHPrinter.h

   1 //===--- ARMWinEHPrinter.h - Windows on ARM Unwind Information Printer ----===//
   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 #ifndef LLVM_READOBJ_ARMWINEHPRINTER_H
  11 #define LLVM_READOBJ_ARMWINEHPRINTER_H
  12
  13 #include "StreamWriter.h"
  14 #include "llvm/Object/COFF.h"
  15 #include "llvm/Support/ErrorOr.h"
  16
  17 namespace llvm {
  18 using std::error_code;
  19 namespace ARM {
  20 namespace WinEH {
  21 class RuntimeFunction;
  22
  23 class Decoder {
  24   static const size_t PDataEntrySize;
  25
  26   StreamWriter &SW;
  27   raw_ostream &OS;
  28
  29   struct RingEntry {
  30     uint8_t Mask;
  31     uint8_t Value;
  32     bool (Decoder::*Routine)(const support::ulittle8_t *, unsigned &, unsigned,
  33                              bool);
  34   };
  35   static const RingEntry Ring[];
  36
  37   bool opcode_0xxxxxxx(const support::ulittle8_t *Opcodes, unsigned &Offset,
  38                        unsigned Length, bool Prologue);
  39   bool opcode_10Lxxxxx(const support::ulittle8_t *Opcodes, unsigned &Offset,
  40                        unsigned Length, bool Prologue);
  41   bool opcode_1100xxxx(const support::ulittle8_t *Opcodes, unsigned &Offset,
  42                        unsigned Length, bool Prologue);
  43   bool opcode_11010Lxx(const support::ulittle8_t *Opcodes, unsigned &Offset,
  44                        unsigned Length, bool Prologue);
  45   bool opcode_11011Lxx(const support::ulittle8_t *Opcodes, unsigned &Offset,
  46                        unsigned Length, bool Prologue);
  47   bool opcode_11100xxx(const support::ulittle8_t *Opcodes, unsigned &Offset,
  48                        unsigned Length, bool Prologue);
  49   bool opcode_111010xx(const support::ulittle8_t *Opcodes, unsigned &Offset,
  50                        unsigned Length, bool Prologue);
  51   bool opcode_1110110L(const support::ulittle8_t *Opcodes, unsigned &Offset,
  52                        unsigned Length, bool Prologue);
  53   bool opcode_11101110(const support::ulittle8_t *Opcodes, unsigned &Offset,
  54                        unsigned Length, bool Prologue);
  55   bool opcode_11101111(const support::ulittle8_t *Opcodes, unsigned &Offset,
  56                        unsigned Length, bool Prologue);
  57   bool opcode_11110101(const support::ulittle8_t *Opcodes, unsigned &Offset,
  58                        unsigned Length, bool Prologue);
  59   bool opcode_11110110(const support::ulittle8_t *Opcodes, unsigned &Offset,
  60                        unsigned Length, bool Prologue);
  61   bool opcode_11110111(const support::ulittle8_t *Opcodes, unsigned &Offset,
  62                        unsigned Length, bool Prologue);
  63   bool opcode_11111000(const support::ulittle8_t *Opcodes, unsigned &Offset,
  64                        unsigned Length, bool Prologue);
  65   bool opcode_11111001(const support::ulittle8_t *Opcodes, unsigned &Offset,
  66                        unsigned Length, bool Prologue);
  67   bool opcode_11111010(const support::ulittle8_t *Opcodes, unsigned &Offset,
  68                        unsigned Length, bool Prologue);
  69   bool opcode_11111011(const support::ulittle8_t *Opcodes, unsigned &Offset,
  70                        unsigned Length, bool Prologue);
  71   bool opcode_11111100(const support::ulittle8_t *Opcodes, unsigned &Offset,
  72                        unsigned Length, bool Prologue);
  73   bool opcode_11111101(const support::ulittle8_t *Opcodes, unsigned &Offset,
  74                        unsigned Length, bool Prologue);
  75   bool opcode_11111110(const support::ulittle8_t *Opcodes, unsigned &Offset,
  76                        unsigned Length, bool Prologue);
  77   bool opcode_11111111(const support::ulittle8_t *Opcodes, unsigned &Offset,
  78                        unsigned Length, bool Prologue);
  79
  80   void decodeOpcodes(ArrayRef<support::ulittle8_t> Opcodes, unsigned Offset,
  81                      bool Prologue);
  82
  83   void printRegisters(const std::pair<uint16_t, uint32_t> &RegisterMask);
  84
  85   ErrorOr<object::SectionRef>
  86   getSectionContaining(const object::COFFObjectFile &COFF, uint64_t Address);
  87
  88   ErrorOr<object::SymbolRef>
  89   getSymbol(const object::COFFObjectFile &COFF, uint64_t Address,
  90             bool FunctionOnly = false);
  91
  92   ErrorOr<object::SymbolRef>
  93   getRelocatedSymbol(const object::COFFObjectFile &COFF,
  94                      const object::SectionRef &Section, uint64_t Offset);
  95
  96   bool dumpXDataRecord(const object::COFFObjectFile &COFF,
  97                        const object::SectionRef &Section,
  98                        uint64_t FunctionAddress, uint64_t VA);
  99   bool dumpUnpackedEntry(const object::COFFObjectFile &COFF,
 100                          const object::SectionRef Section, uint64_t Offset,
 101                          unsigned Index, const RuntimeFunction &Entry);
 102   bool dumpPackedEntry(const object::COFFObjectFile &COFF,
 103                        const object::SectionRef Section, uint64_t Offset,
 104                        unsigned Index, const RuntimeFunction &Entry);
 105   bool dumpProcedureDataEntry(const object::COFFObjectFile &COFF,
 106                               const object::SectionRef Section, unsigned Entry,
 107                               ArrayRef<uint8_t> Contents);
 108   void dumpProcedureData(const object::COFFObjectFile &COFF,
 109                          const object::SectionRef Section);
 110
 111 public:
 112   Decoder(StreamWriter &SW) : SW(SW), OS(SW.getOStream()) {}
 113   error_code dumpProcedureData(const object::COFFObjectFile &COFF);
 114 };
 115 }
 116 }
 117 }
 118
 119 #endif
 120