lldb/source/Plugins/Process/NetBSD/NativeProcessNetBSD.h

   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
  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
  92   llvm::Expected<std::string> SaveCore(llvm::StringRef path_hint) override;
  93
  94 private:
  95   MainLoop::SignalHandleUP m_sigchld_handle;
  96   ArchSpec m_arch;
  97   MainLoop& m_main_loop;
  98   LazyBool m_supports_mem_region = eLazyBoolCalculate;
  99   std::vector<std::pair<MemoryRegionInfo, FileSpec>> m_mem_region_cache;
 100
 101   // Private Instance Methods
 102   NativeProcessNetBSD(::pid_t pid, int terminal_fd, NativeDelegate &delegate,
 103                       const ArchSpec &arch, MainLoop &mainloop);
 104
 105   bool HasThreadNoLock(lldb::tid_t thread_id);
 106
 107   NativeThreadNetBSD &AddThread(lldb::tid_t thread_id);
 108   void RemoveThread(lldb::tid_t thread_id);
 109
 110   void MonitorCallback(lldb::pid_t pid, int signal);
 111   void MonitorExited(lldb::pid_t pid, WaitStatus status);
 112   void MonitorSIGSTOP(lldb::pid_t pid);
 113   void MonitorSIGTRAP(lldb::pid_t pid);
 114   void MonitorSignal(lldb::pid_t pid, int signal);
 115   void MonitorClone(::pid_t child_pid, bool is_vfork,
 116                     NativeThreadNetBSD &parent_thread);
 117
 118   Status PopulateMemoryRegionCache();
 119   void SigchldHandler();
 120
 121   Status Attach();
 122   Status SetupTrace();
 123   Status ReinitializeThreads();
 124 };
 125
 126 } // namespace process_netbsd
 127 } // namespace lldb_private
 128
 129 #endif // #ifndef liblldb_NativeProcessNetBSD_H_