1 //===-- NativeThreadFreeBSD.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 liblldb_NativeThreadFreeBSD_H_
10 #define liblldb_NativeThreadFreeBSD_H_
11 
12 #include "lldb/Host/common/NativeThreadProtocol.h"
13 
14 #include "Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD.h"
15 
16 #include <csignal>
17 #include <map>
18 #include <string>
19 
20 namespace lldb_private {
21 namespace process_freebsd {
22 
23 class NativeProcessFreeBSD;
24 
25 class NativeThreadFreeBSD : public NativeThreadProtocol {
26   friend class NativeProcessFreeBSD;
27 
28 public:
29   NativeThreadFreeBSD(NativeProcessFreeBSD &process, lldb::tid_t tid);
30 
31   // NativeThreadProtocol Interface
32   std::string GetName() override;
33 
34   lldb::StateType GetState() override;
35 
36   bool GetStopReason(ThreadStopInfo &stop_info,
37                      std::string &description) override;
38 
39   NativeRegisterContextFreeBSD &GetRegisterContext() override;
40 
41   Status SetWatchpoint(lldb::addr_t addr, size_t size, uint32_t watch_flags,
42                        bool hardware) override;
43 
44   Status RemoveWatchpoint(lldb::addr_t addr) override;
45 
46   Status SetHardwareBreakpoint(lldb::addr_t addr, size_t size) override;
47 
48   Status RemoveHardwareBreakpoint(lldb::addr_t addr) override;
49 
50   llvm::Expected<std::unique_ptr<llvm::MemoryBuffer>>
51   GetSiginfo() const override;
52 
53 private:
54   // Interface for friend classes
55 
56   Status Resume();
57   Status SingleStep();
58   Status Suspend();
59 
60   void SetStoppedBySignal(uint32_t signo, const siginfo_t *info = nullptr);
61   void SetStoppedByBreakpoint();
62   void SetStoppedByTrace();
63   void SetStoppedByExec();
64   void SetStoppedByWatchpoint(uint32_t wp_index);
65   void SetStoppedByFork(lldb::pid_t child_pid, lldb::tid_t child_tid);
66   void SetStoppedByVFork(lldb::pid_t child_pid, lldb::tid_t child_tid);
67   void SetStoppedByVForkDone();
68   void SetStoppedWithNoReason();
69   void SetStopped();
70   void SetRunning();
71   void SetStepping();
72 
73   llvm::Error CopyWatchpointsFrom(NativeThreadFreeBSD &source);
74 
75   // Member Variables
76   lldb::StateType m_state;
77   ThreadStopInfo m_stop_info;
78   std::unique_ptr<NativeRegisterContextFreeBSD> m_reg_context_up;
79   std::string m_stop_description;
80   using WatchpointIndexMap = std::map<lldb::addr_t, uint32_t>;
81   WatchpointIndexMap m_watchpoint_index_map;
82   WatchpointIndexMap m_hw_break_index_map;
83 };
84 
85 typedef std::shared_ptr<NativeThreadFreeBSD> NativeThreadFreeBSDSP;
86 } // namespace process_freebsd
87 } // namespace lldb_private
88 
89 #endif // #ifndef liblldb_NativeThreadFreeBSD_H_
90