tools/llvm-readobj/ARMWinEHPrinter.h

   1 //===--- ARMWinEHPrinter.h - Windows on ARM Unwind Information Printer ----===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #ifndef LLVM_TOOLS_LLVM_READOBJ_ARMWINEHPRINTER_H
  10 #define LLVM_TOOLS_LLVM_READOBJ_ARMWINEHPRINTER_H
  11
  12 #include "llvm/Object/COFF.h"
  13 #include "llvm/Support/ErrorOr.h"
  14 #include "llvm/Support/ScopedPrinter.h"
  15
  16 namespace llvm {
  17 namespace ARM {
  18 namespace WinEH {
  19 class RuntimeFunction;
  20
  21 class Decoder {
  22   static const size_t PDataEntrySize;
  23
  24   ScopedPrinter &SW;
  25   raw_ostream &OS;
  26   bool isAArch64;
  27
  28   struct RingEntry {
  29     uint8_t Mask;
  30     uint8_t Value;
  31     uint8_t Length;
  32     bool (Decoder::*Routine)(const uint8_t *, unsigned &, unsigned, bool);
  33   };
  34   static const RingEntry Ring[];
  35   static const RingEntry Ring64[];
  36
  37   bool opcode_0xxxxxxx(const uint8_t *Opcodes, unsigned &Offset,
  38                        unsigned Length, bool Prologue);
  39   bool opcode_10Lxxxxx(const uint8_t *Opcodes, unsigned &Offset,
  40                        unsigned Length, bool Prologue);
  41   bool opcode_1100xxxx(const uint8_t *Opcodes, unsigned &Offset,
  42                        unsigned Length, bool Prologue);
  43   bool opcode_11010Lxx(const uint8_t *Opcodes, unsigned &Offset,
  44                        unsigned Length, bool Prologue);
  45   bool opcode_11011Lxx(const uint8_t *Opcodes, unsigned &Offset,
  46                        unsigned Length, bool Prologue);
  47   bool opcode_11100xxx(const uint8_t *Opcodes, unsigned &Offset,
  48                        unsigned Length, bool Prologue);
  49   bool opcode_111010xx(const uint8_t *Opcodes, unsigned &Offset,
  50                        unsigned Length, bool Prologue);
  51   bool opcode_1110110L(const uint8_t *Opcodes, unsigned &Offset,
  52                        unsigned Length, bool Prologue);
  53   bool opcode_11101110(const uint8_t *Opcodes, unsigned &Offset,
  54                        unsigned Length, bool Prologue);
  55   bool opcode_11101111(const uint8_t *Opcodes, unsigned &Offset,
  56                        unsigned Length, bool Prologue);
  57   bool opcode_11110101(const uint8_t *Opcodes, unsigned &Offset,
  58                        unsigned Length, bool Prologue);
  59   bool opcode_11110110(const uint8_t *Opcodes, unsigned &Offset,
  60                        unsigned Length, bool Prologue);
  61   bool opcode_11110111(const uint8_t *Opcodes, unsigned &Offset,
  62                        unsigned Length, bool Prologue);
  63   bool opcode_11111000(const uint8_t *Opcodes, unsigned &Offset,
  64                        unsigned Length, bool Prologue);
  65   bool opcode_11111001(const uint8_t *Opcodes, unsigned &Offset,
  66                        unsigned Length, bool Prologue);
  67   bool opcode_11111010(const uint8_t *Opcodes, unsigned &Offset,
  68                        unsigned Length, bool Prologue);
  69   bool opcode_11111011(const uint8_t *Opcodes, unsigned &Offset,
  70                        unsigned Length, bool Prologue);
  71   bool opcode_11111100(const uint8_t *Opcodes, unsigned &Offset,
  72                        unsigned Length, bool Prologue);
  73   bool opcode_11111101(const uint8_t *Opcodes, unsigned &Offset,
  74                        unsigned Length, bool Prologue);
  75   bool opcode_11111110(const uint8_t *Opcodes, unsigned &Offset,
  76                        unsigned Length, bool Prologue);
  77   bool opcode_11111111(const uint8_t *Opcodes, unsigned &Offset,
  78                        unsigned Length, bool Prologue);
  79
  80   // ARM64 unwind codes start here.
  81   bool opcode_alloc_s(const uint8_t *Opcodes, unsigned &Offset, unsigned Length,
  82                       bool Prologue);
  83   bool opcode_save_r19r20_x(const uint8_t *Opcodes, unsigned &Offset,
  84                             unsigned Length, bool Prologue);
  85   bool opcode_save_fplr(const uint8_t *Opcodes, unsigned &Offset,
  86                         unsigned Length, bool Prologue);
  87   bool opcode_save_fplr_x(const uint8_t *Opcodes, unsigned &Offset,
  88                           unsigned Length, bool Prologue);
  89   bool opcode_alloc_m(const uint8_t *Opcodes, unsigned &Offset, unsigned Length,
  90                       bool Prologue);
  91   bool opcode_save_regp(const uint8_t *Opcodes, unsigned &Offset,
  92                         unsigned Length, bool Prologue);
  93   bool opcode_save_regp_x(const uint8_t *Opcodes, unsigned &Offset,
  94                           unsigned Length, bool Prologue);
  95   bool opcode_save_reg(const uint8_t *Opcodes, unsigned &Offset,
  96                        unsigned Length, bool Prologue);
  97   bool opcode_save_reg_x(const uint8_t *Opcodes, unsigned &Offset,
  98                          unsigned Length, bool Prologue);
  99   bool opcode_save_lrpair(const uint8_t *Opcodes, unsigned &Offset,
 100                           unsigned Length, bool Prologue);
 101   bool opcode_save_fregp(const uint8_t *Opcodes, unsigned &Offset,
 102                          unsigned Length, bool Prologue);
 103   bool opcode_save_fregp_x(const uint8_t *Opcodes, unsigned &Offset,
 104                            unsigned Length, bool Prologue);
 105   bool opcode_save_freg(const uint8_t *Opcodes, unsigned &Offset,
 106                         unsigned Length, bool Prologue);
 107   bool opcode_save_freg_x(const uint8_t *Opcodes, unsigned &Offset,
 108                           unsigned Length, bool Prologue);
 109   bool opcode_alloc_l(const uint8_t *Opcodes, unsigned &Offset, unsigned Length,
 110                       bool Prologue);
 111   bool opcode_setfp(const uint8_t *Opcodes, unsigned &Offset, unsigned Length,
 112                     bool Prologue);
 113   bool opcode_addfp(const uint8_t *Opcodes, unsigned &Offset, unsigned Length,
 114                     bool Prologue);
 115   bool opcode_nop(const uint8_t *Opcodes, unsigned &Offset, unsigned Length,
 116                   bool Prologue);
 117   bool opcode_end(const uint8_t *Opcodes, unsigned &Offset, unsigned Length,
 118                   bool Prologue);
 119   bool opcode_end_c(const uint8_t *Opcodes, unsigned &Offset, unsigned Length,
 120                     bool Prologue);
 121   bool opcode_save_next(const uint8_t *Opcodes, unsigned &Offset,
 122                         unsigned Length, bool Prologue);
 123
 124   void decodeOpcodes(ArrayRef<uint8_t> Opcodes, unsigned Offset,
 125                      bool Prologue);
 126
 127   void printRegisters(const std::pair<uint16_t, uint32_t> &RegisterMask);
 128
 129   ErrorOr<object::SectionRef>
 130   getSectionContaining(const object::COFFObjectFile &COFF, uint64_t Address);
 131
 132   ErrorOr<object::SymbolRef>
 133   getSymbol(const object::COFFObjectFile &COFF, uint64_t Address,
 134             bool FunctionOnly = false);
 135
 136   ErrorOr<object::SymbolRef>
 137   getRelocatedSymbol(const object::COFFObjectFile &COFF,
 138                      const object::SectionRef &Section, uint64_t Offset);
 139
 140   bool dumpXDataRecord(const object::COFFObjectFile &COFF,
 141                        const object::SectionRef &Section,
 142                        uint64_t FunctionAddress, uint64_t VA);
 143   bool dumpUnpackedEntry(const object::COFFObjectFile &COFF,
 144                          const object::SectionRef Section, uint64_t Offset,
 145                          unsigned Index, const RuntimeFunction &Entry);
 146   bool dumpPackedEntry(const object::COFFObjectFile &COFF,
 147                        const object::SectionRef Section, uint64_t Offset,
 148                        unsigned Index, const RuntimeFunction &Entry);
 149   bool dumpProcedureDataEntry(const object::COFFObjectFile &COFF,
 150                               const object::SectionRef Section, unsigned Entry,
 151                               ArrayRef<uint8_t> Contents);
 152   void dumpProcedureData(const object::COFFObjectFile &COFF,
 153                          const object::SectionRef Section);
 154
 155 public:
 156   Decoder(ScopedPrinter &SW, bool isAArch64) : SW(SW),
 157                                                OS(SW.getOStream()),
 158                                                isAArch64(isAArch64) {}
 159   Error dumpProcedureData(const object::COFFObjectFile &COFF);
 160 };
 161 }
 162 }
 163 }
 164
 165 #endif