1 //===-- NativeProcessOpenBSD.h --------------------------------- -*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef liblldb_NativeProcessOpenBSD_H_ 11 #define liblldb_NativeProcessOpenBSD_H_ 12 13 #include "lldb/Target/MemoryRegionInfo.h" 14 #include "lldb/Utility/ArchSpec.h" 15 #include "lldb/Utility/FileSpec.h" 16 17 #include "NativeThreadOpenBSD.h" 18 #include "lldb/Host/common/NativeProcessProtocol.h" 19 20 namespace lldb_private { 21 namespace process_openbsd { 22 /// @class NativeProcessOpenBSD 23 /// Manages communication with the inferior (debugee) process. 24 /// 25 /// Upon construction, this class prepares and launches an inferior process 26 /// for debugging. 27 /// 28 /// Changes in the inferior process state are broadcasted. 29 class NativeProcessOpenBSD : public NativeProcessProtocol { 30 public: 31 class Factory : public NativeProcessProtocol::Factory { 32 public: 33 llvm::Expected<std::unique_ptr<NativeProcessProtocol>> 34 Launch(ProcessLaunchInfo &launch_info, NativeDelegate &native_delegate, 35 MainLoop &mainloop) const override; 36 37 llvm::Expected<std::unique_ptr<NativeProcessProtocol>> 38 Attach(lldb::pid_t pid, NativeDelegate &native_delegate, 39 MainLoop &mainloop) const override; 40 }; 41 42 // --------------------------------------------------------------------- 43 // NativeProcessProtocol Interface 44 // --------------------------------------------------------------------- 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 Kill() override; 54 55 Status GetMemoryRegionInfo(lldb::addr_t load_addr, 56 MemoryRegionInfo &range_info) override; 57 58 Status ReadMemory(lldb::addr_t addr, void *buf, size_t size, 59 size_t &bytes_read) override; 60 61 Status WriteMemory(lldb::addr_t addr, const void *buf, size_t size, 62 size_t &bytes_written) override; 63 64 Status AllocateMemory(size_t size, uint32_t permissions, 65 lldb::addr_t &addr) override; 66 67 Status DeallocateMemory(lldb::addr_t addr) override; 68 69 lldb::addr_t GetSharedLibraryInfoAddress() override; 70 71 size_t UpdateThreads() override; 72 73 const ArchSpec &GetArchitecture() const override { return m_arch; } 74 75 Status SetBreakpoint(lldb::addr_t addr, uint32_t size, 76 bool hardware) override; 77 78 Status GetLoadedModuleFileSpec(const char *module_path, 79 FileSpec &file_spec) override; 80 81 Status GetFileLoadAddress(const llvm::StringRef &file_name, 82 lldb::addr_t &load_addr) override; 83 84 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> 85 GetAuxvData() const override; 86 87 // --------------------------------------------------------------------- 88 // Interface used by NativeRegisterContext-derived classes. 89 // --------------------------------------------------------------------- 90 static Status PtraceWrapper(int req, lldb::pid_t pid, void *addr = nullptr, 91 int data = 0, int *result = nullptr); 92 93 private: 94 MainLoop::SignalHandleUP m_sigchld_handle; 95 ArchSpec m_arch; 96 std::vector<std::pair<MemoryRegionInfo, FileSpec>> m_mem_region_cache; 97 98 // --------------------------------------------------------------------- 99 // Private Instance Methods 100 // --------------------------------------------------------------------- 101 NativeProcessOpenBSD(::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 NativeThreadOpenBSD &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 MonitorSIGTRAP(lldb::pid_t pid); 111 void MonitorSignal(lldb::pid_t pid, int signal); 112 113 Status PopulateMemoryRegionCache(); 114 void SigchldHandler(); 115 116 Status Attach(); 117 Status ReinitializeThreads(); 118 }; 119 120 } // namespace process_openbsd 121 } // namespace lldb_private 122 123 #endif // #ifndef liblldb_NativeProcessOpenBSD_H_ 124