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 "Plugins/Process/POSIX/NativeProcessELF.h" 13 #include "lldb/Target/MemoryRegionInfo.h" 14 #include "lldb/Utility/ArchSpec.h" 15 #include "lldb/Utility/FileSpec.h" 16 17 #include "NativeThreadNetBSD.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 NativeProcessELF { 29 public: 30 class Manager : public NativeProcessProtocol::Manager { 31 public: 32 using NativeProcessProtocol::Manager::Manager; 33 34 llvm::Expected<std::unique_ptr<NativeProcessProtocol>> 35 Launch(ProcessLaunchInfo &launch_info, 36 NativeDelegate &native_delegate) override; 37 38 llvm::Expected<std::unique_ptr<NativeProcessProtocol>> 39 Attach(lldb::pid_t pid, NativeDelegate &native_delegate) override; 40 41 Extension GetSupportedExtensions() const override; 42 }; 43 44 // NativeProcessProtocol Interface 45 Status Resume(const ResumeActionList &resume_actions) override; 46 47 Status Halt() override; 48 49 Status Detach() override; 50 51 Status Signal(int signo) override; 52 53 Status Interrupt() override; 54 55 Status Kill() override; 56 57 Status GetMemoryRegionInfo(lldb::addr_t load_addr, 58 MemoryRegionInfo &range_info) override; 59 60 Status ReadMemory(lldb::addr_t addr, void *buf, size_t size, 61 size_t &bytes_read) override; 62 63 Status WriteMemory(lldb::addr_t addr, const void *buf, size_t size, 64 size_t &bytes_written) override; 65 66 lldb::addr_t GetSharedLibraryInfoAddress() override; 67 68 size_t UpdateThreads() override; 69 GetArchitecture()70 const ArchSpec &GetArchitecture() const override { return m_arch; } 71 72 Status SetBreakpoint(lldb::addr_t addr, uint32_t size, 73 bool hardware) override; 74 75 // The two following methods are probably not necessary and probably 76 // will never be called. Nevertheless, we implement them right now 77 // to reduce the differences between different platforms and reduce 78 // the risk of the lack of implementation actually breaking something, 79 // at least for the time being. 80 Status GetLoadedModuleFileSpec(const char *module_path, 81 FileSpec &file_spec) override; 82 Status GetFileLoadAddress(const llvm::StringRef &file_name, 83 lldb::addr_t &load_addr) override; 84 85 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> 86 GetAuxvData() const override; 87 88 // Interface used by NativeRegisterContext-derived classes. 89 static Status PtraceWrapper(int req, lldb::pid_t pid, void *addr = nullptr, 90 int data = 0, int *result = nullptr); 91 static Status StopProcess(lldb::pid_t pid); 92 93 llvm::Expected<std::string> SaveCore(llvm::StringRef path_hint) override; 94 95 private: 96 MainLoop::SignalHandleUP m_sigchld_handle; 97 ArchSpec m_arch; 98 MainLoop& m_main_loop; 99 LazyBool m_supports_mem_region = eLazyBoolCalculate; 100 std::vector<std::pair<MemoryRegionInfo, FileSpec>> m_mem_region_cache; 101 102 // Private Instance Methods 103 NativeProcessNetBSD(::pid_t pid, int terminal_fd, NativeDelegate &delegate, 104 const ArchSpec &arch, MainLoop &mainloop); 105 106 bool HasThreadNoLock(lldb::tid_t thread_id); 107 108 NativeThreadNetBSD &AddThread(lldb::tid_t thread_id); 109 void RemoveThread(lldb::tid_t thread_id); 110 111 void MonitorCallback(lldb::pid_t pid, int signal); 112 void MonitorExited(lldb::pid_t pid, WaitStatus status); 113 void MonitorSIGSTOP(lldb::pid_t pid); 114 void MonitorSIGTRAP(lldb::pid_t pid); 115 void MonitorSignal(lldb::pid_t pid, int signal); 116 void MonitorClone(::pid_t child_pid, bool is_vfork, 117 NativeThreadNetBSD &parent_thread); 118 119 Status PopulateMemoryRegionCache(); 120 void SigchldHandler(); 121 122 Status Attach(); 123 Status SetupTrace(); 124 Status ReinitializeThreads(); 125 }; 126 127 } // namespace process_netbsd 128 } // namespace lldb_private 129 130 #endif // #ifndef liblldb_NativeProcessNetBSD_H_ 131