1 //===-- NativeRegisterContextFreeBSD_arm64.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(__aarch64__)
10 
11 #ifndef lldb_NativeRegisterContextFreeBSD_arm64_h
12 #define lldb_NativeRegisterContextFreeBSD_arm64_h
13 
14 // clang-format off
15 #include <sys/types.h>
16 #include <machine/reg.h>
17 // clang-format on
18 
19 #include "Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD.h"
20 #include "Plugins/Process/Utility/RegisterInfoPOSIX_arm64.h"
21 
22 #include <array>
23 
24 namespace lldb_private {
25 namespace process_freebsd {
26 
27 class NativeProcessFreeBSD;
28 
29 class NativeRegisterContextFreeBSD_arm64 : public NativeRegisterContextFreeBSD {
30 public:
31   NativeRegisterContextFreeBSD_arm64(const ArchSpec &target_arch,
32                                      NativeThreadProtocol &native_thread);
33 
34   uint32_t GetRegisterSetCount() const override;
35 
36   uint32_t GetUserRegisterCount() const override;
37 
38   const RegisterSet *GetRegisterSet(uint32_t set_index) const override;
39 
40   Status ReadRegister(const RegisterInfo *reg_info,
41                       RegisterValue &reg_value) override;
42 
43   Status WriteRegister(const RegisterInfo *reg_info,
44                        const RegisterValue &reg_value) override;
45 
46   Status ReadAllRegisterValues(lldb::DataBufferSP &data_sp) override;
47 
48   Status WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override;
49 
50   llvm::Error
51   CopyHardwareWatchpointsFrom(NativeRegisterContextFreeBSD &source) override;
52 
53 private:
54   // Due to alignment, FreeBSD reg/fpreg are a few bytes larger than
55   // LLDB's GPR/FPU structs.  However, all fields have matching offsets
56   // and sizes, so we do not have to worry about these (and we have
57   // a unittest to assert that).
58   std::array<uint8_t, sizeof(reg) + sizeof(fpreg)> m_reg_data;
59 
60   Status ReadRegisterSet(uint32_t set);
61   Status WriteRegisterSet(uint32_t set);
62 
63   RegisterInfoPOSIX_arm64 &GetRegisterInfo() const;
64 };
65 
66 } // namespace process_freebsd
67 } // namespace lldb_private
68 
69 #endif // #ifndef lldb_NativeRegisterContextFreeBSD_arm64_h
70 
71 #endif // defined (__aarch64__)
72