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NativeRegisterContextFreeBSD_x86_64.h
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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
28
29#define LLDB_INVALID_XSAVE_OFFSET UINT32_MAX
30
31namespace lldb_private {
32namespace process_freebsd {
33
34class NativeProcessFreeBSD;
35
36class NativeRegisterContextFreeBSD_x86_64
37 : public NativeRegisterContextFreeBSD,
38 public NativeRegisterContextDBReg_x86 {
39public:
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
59private:
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__)
A class that represents a running process on the host machine.
std::shared_ptr< lldb_private::DataBuffer > DataBufferSP
Definition: lldb-forward.h:331
std::shared_ptr< lldb_private::WritableDataBuffer > WritableDataBufferSP
Definition: lldb-forward.h:332