1 //===-- NativeProcessNetBSD.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_NativeProcessNetBSD_H_
10 #define liblldb_NativeProcessNetBSD_H_
11 
12 #include "lldb/Target/MemoryRegionInfo.h"
13 #include "lldb/Utility/ArchSpec.h"
14 #include "lldb/Utility/FileSpec.h"
15 
16 #include "NativeThreadNetBSD.h"
17 #include "lldb/Host/common/NativeProcessProtocol.h"
18 
19 namespace lldb_private {
20 namespace process_netbsd {
21 /// @class NativeProcessNetBSD
22 /// Manages communication with the inferior (debugee) process.
23 ///
24 /// Upon construction, this class prepares and launches an inferior process
25 /// for debugging.
26 ///
27 /// Changes in the inferior process state are broadcasted.
28 class NativeProcessNetBSD : public NativeProcessProtocol {
29 public:
30   class Factory : public NativeProcessProtocol::Factory {
31   public:
32     llvm::Expected<std::unique_ptr<NativeProcessProtocol>>
33     Launch(ProcessLaunchInfo &launch_info, NativeDelegate &native_delegate,
34            MainLoop &mainloop) const override;
35 
36     llvm::Expected<std::unique_ptr<NativeProcessProtocol>>
37     Attach(lldb::pid_t pid, NativeDelegate &native_delegate,
38            MainLoop &mainloop) const override;
39   };
40 
41   // ---------------------------------------------------------------------
42   // NativeProcessProtocol Interface
43   // ---------------------------------------------------------------------
44   Status Resume(const ResumeActionList &resume_actions) override;
45 
46   Status Halt() override;
47 
48   Status Detach() override;
49 
50   Status Signal(int signo) override;
51 
52   Status Kill() override;
53 
54   Status GetMemoryRegionInfo(lldb::addr_t load_addr,
55                              MemoryRegionInfo &range_info) override;
56 
57   Status ReadMemory(lldb::addr_t addr, void *buf, size_t size,
58                     size_t &bytes_read) override;
59 
60   Status WriteMemory(lldb::addr_t addr, const void *buf, size_t size,
61                      size_t &bytes_written) override;
62 
63   Status AllocateMemory(size_t size, uint32_t permissions,
64                         lldb::addr_t &addr) override;
65 
66   Status DeallocateMemory(lldb::addr_t addr) override;
67 
68   lldb::addr_t GetSharedLibraryInfoAddress() override;
69 
70   size_t UpdateThreads() override;
71 
72   const ArchSpec &GetArchitecture() const override { return m_arch; }
73 
74   Status SetBreakpoint(lldb::addr_t addr, uint32_t size,
75                        bool hardware) override;
76 
77   Status GetLoadedModuleFileSpec(const char *module_path,
78                                  FileSpec &file_spec) override;
79 
80   Status GetFileLoadAddress(const llvm::StringRef &file_name,
81                             lldb::addr_t &load_addr) override;
82 
83   llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>>
84   GetAuxvData() const override;
85 
86   // ---------------------------------------------------------------------
87   // Interface used by NativeRegisterContext-derived classes.
88   // ---------------------------------------------------------------------
89   static Status PtraceWrapper(int req, lldb::pid_t pid, void *addr = nullptr,
90                               int data = 0, int *result = nullptr);
91 
92 private:
93   MainLoop::SignalHandleUP m_sigchld_handle;
94   ArchSpec m_arch;
95   LazyBool m_supports_mem_region = eLazyBoolCalculate;
96   std::vector<std::pair<MemoryRegionInfo, FileSpec>> m_mem_region_cache;
97 
98   // ---------------------------------------------------------------------
99   // Private Instance Methods
100   // ---------------------------------------------------------------------
101   NativeProcessNetBSD(::pid_t pid, int terminal_fd, NativeDelegate &delegate,
102                       const ArchSpec &arch, MainLoop &mainloop);
103 
104   bool HasThreadNoLock(lldb::tid_t thread_id);
105 
106   NativeThreadNetBSD &AddThread(lldb::tid_t thread_id);
107 
108   void MonitorCallback(lldb::pid_t pid, int signal);
109   void MonitorExited(lldb::pid_t pid, WaitStatus status);
110   void MonitorSIGSTOP(lldb::pid_t pid);
111   void MonitorSIGTRAP(lldb::pid_t pid);
112   void MonitorSignal(lldb::pid_t pid, int signal);
113 
114   Status PopulateMemoryRegionCache();
115   void SigchldHandler();
116 
117   Status Attach();
118   Status ReinitializeThreads();
119 };
120 
121 } // namespace process_netbsd
122 } // namespace lldb_private
123 
124 #endif // #ifndef liblldb_NativeProcessNetBSD_H_
125