lldb/source/Plugins/Process/minidump/RegisterContextMinidump_ARM.h

   1 //===-- RegisterContextMinidump_ARM.h ---------------------------*- C++ -*-===//
   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 LLDB_SOURCE_PLUGINS_PROCESS_MINIDUMP_REGISTERCONTEXTMINIDUMP_ARM_H
  10 #define LLDB_SOURCE_PLUGINS_PROCESS_MINIDUMP_REGISTERCONTEXTMINIDUMP_ARM_H
  11
  12 #include "MinidumpTypes.h"
  13
  14 #include "Plugins/Process/Utility/RegisterInfoInterface.h"
  15
  16 #include "lldb/Target/RegisterContext.h"
  17
  18 #include "llvm/ADT/ArrayRef.h"
  19 #include "llvm/ADT/BitmaskEnum.h"
  20
  21 // C includes
  22 // C++ includes
  23
  24 namespace lldb_private {
  25
  26 namespace minidump {
  27
  28 LLVM_ENABLE_BITMASK_ENUMS_IN_NAMESPACE();
  29
  30 class RegisterContextMinidump_ARM : public lldb_private::RegisterContext {
  31 public:
  32   RegisterContextMinidump_ARM(lldb_private::Thread &thread,
  33                               const DataExtractor &data, bool apple);
  34
  35   ~RegisterContextMinidump_ARM() override = default;
  36
  37   void InvalidateAllRegisters() override {
  38     // Do nothing... registers are always valid...
  39   }
  40
  41   // Used for unit testing.
  42   static size_t GetRegisterCountStatic();
  43   // Used for unit testing.
  44   static const lldb_private::RegisterInfo *
  45   GetRegisterInfoAtIndexStatic(size_t reg, bool apple);
  46
  47   size_t GetRegisterCount() override;
  48
  49   const lldb_private::RegisterInfo *GetRegisterInfoAtIndex(size_t reg) override;
  50
  51   size_t GetRegisterSetCount() override;
  52
  53   const lldb_private::RegisterSet *GetRegisterSet(size_t set) override;
  54
  55   const char *GetRegisterName(unsigned reg);
  56
  57   bool ReadRegister(const RegisterInfo *reg_info,
  58                     RegisterValue &reg_value) override;
  59
  60   bool WriteRegister(const RegisterInfo *reg_info,
  61                      const RegisterValue &reg_value) override;
  62
  63   uint32_t ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind,
  64                                                uint32_t num) override;
  65
  66   // Reference: see breakpad/crashpad source
  67   struct QRegValue {
  68     uint64_t lo;
  69     uint64_t hi;
  70   };
  71
  72   struct Context {
  73     uint32_t context_flags;
  74     uint32_t r[16];
  75     uint32_t cpsr;
  76     uint64_t fpscr;
  77     union {
  78       uint64_t d[32];
  79       uint32_t s[32];
  80       QRegValue q[16];
  81     };
  82     uint32_t extra[8];
  83   };
  84
  85 protected:
  86   enum class Flags : uint32_t {
  87     ARM_Flag = 0x40000000,
  88     Integer = ARM_Flag | 0x00000002,
  89     FloatingPoint = ARM_Flag | 0x00000004,
  90     LLVM_MARK_AS_BITMASK_ENUM(/* LargestValue = */ FloatingPoint)
  91   };
  92   Context m_regs;
  93   const bool m_apple; // True if this is an Apple ARM where FP is R7
  94 };
  95
  96 } // end namespace minidump
  97 } // end namespace lldb_private
  98 #endif // LLDB_SOURCE_PLUGINS_PROCESS_MINIDUMP_REGISTERCONTEXTMINIDUMP_ARM_H