lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86_64.h

   1 //===-- NativeRegisterContextFreeBSD_x86_64.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 #if defined(__i386__) || defined(__x86_64__)
  10
  11 #ifndef lldb_NativeRegisterContextFreeBSD_x86_64_h
  12 #define lldb_NativeRegisterContextFreeBSD_x86_64_h
  13
  14 // clang-format off
  15 #include <sys/param.h>
  16 #include <sys/ptrace.h>
  17 #include <sys/types.h>
  18 #include <machine/reg.h>
  19 // clang-format on
  20
  21 #include <array>
  22 #include <optional>
  23
  24 #include "Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD.h"
  25 #include "Plugins/Process/Utility/RegisterContext_x86.h"
  26 #include "Plugins/Process/Utility/NativeRegisterContextDBReg_x86.h"
  27 #include "Plugins/Process/Utility/lldb-x86-register-enums.h"
  28
  29 #define LLDB_INVALID_XSAVE_OFFSET UINT32_MAX
  30
  31 namespace lldb_private {
  32 namespace process_freebsd {
  33
  34 class NativeProcessFreeBSD;
  35
  36 class NativeRegisterContextFreeBSD_x86_64
  37     : public NativeRegisterContextFreeBSD,
  38       public NativeRegisterContextDBReg_x86 {
  39 public:
  40   NativeRegisterContextFreeBSD_x86_64(const ArchSpec &target_arch,
  41                                       NativeThreadProtocol &native_thread);
  42   uint32_t GetRegisterSetCount() const override;
  43
  44   const RegisterSet *GetRegisterSet(uint32_t set_index) const override;
  45
  46   Status ReadRegister(const RegisterInfo *reg_info,
  47                       RegisterValue &reg_value) override;
  48
  49   Status WriteRegister(const RegisterInfo *reg_info,
  50                        const RegisterValue &reg_value) override;
  51
  52   Status ReadAllRegisterValues(lldb::WritableDataBufferSP &data_sp) override;
  53
  54   Status WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override;
  55
  56   llvm::Error
  57   CopyHardwareWatchpointsFrom(NativeRegisterContextFreeBSD &source) override;
  58
  59 private:
  60   // Private member types.
  61   enum RegSetKind {
  62     GPRegSet,
  63     FPRegSet,
  64     DBRegSet,
  65     YMMRegSet,
  66     MPXRegSet,
  67     MaxRegSet = MPXRegSet,
  68   };
  69
  70   // Private member variables.
  71   std::array<uint8_t, sizeof(struct reg)> m_gpr;
  72   std::array<uint8_t, 512> m_fpr; // FXSAVE
  73   std::array<uint8_t, sizeof(struct dbreg)> m_dbr;
  74   std::vector<uint8_t> m_xsave;
  75   std::array<uint32_t, MaxRegSet + 1> m_xsave_offsets;
  76   std::array<size_t, MaxRegSet + 1> m_regset_offsets;
  77
  78   std::optional<RegSetKind> GetSetForNativeRegNum(uint32_t reg_num) const;
  79
  80   Status ReadRegisterSet(RegSetKind set);
  81   Status WriteRegisterSet(RegSetKind set);
  82
  83   uint8_t *GetOffsetRegSetData(RegSetKind set, size_t reg_offset);
  84
  85   struct YMMSplitPtr {
  86     void *xmm;
  87     void *ymm_hi;
  88   };
  89   std::optional<YMMSplitPtr> GetYMMSplitReg(uint32_t reg);
  90 };
  91
  92 } // namespace process_freebsd
  93 } // namespace lldb_private
  94
  95 #endif // #ifndef lldb_NativeRegisterContextFreeBSD_x86_64_h
  96
  97 #endif // defined(__x86_64__)