ProcessKDP.h

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//===-- ProcessKDP.h --------------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
 
#ifndef LLDB_SOURCE_PLUGINS_PROCESS_MACOSX_KERNEL_PROCESSKDP_H
#define LLDB_SOURCE_PLUGINS_PROCESS_MACOSX_KERNEL_PROCESSKDP_H
 
#include <list>
#include <vector>
 
#include "lldb/Core/ThreadSafeValue.h"
#include "lldb/Host/HostThread.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/Thread.h"
#include "lldb/Utility/ArchSpec.h"
#include "lldb/Utility/Broadcaster.h"
#include "lldb/Utility/ConstString.h"
#include "lldb/Utility/Status.h"
#include "lldb/Utility/StreamString.h"
#include "lldb/Utility/StringList.h"
 
#include "CommunicationKDP.h"
 
class ThreadKDP;
 
class ProcessKDP : public lldb_private::Process {
public:
  // Constructors and Destructors
  static lldb::ProcessSP
  CreateInstance(lldb::TargetSP target_sp, lldb::ListenerSP listener_sp,
                 const lldb_private::FileSpec *crash_file_path,
                 bool can_connect);
 
  static void Initialize();
 
  static void DebuggerInitialize(lldb_private::Debugger &debugger);
 
  static void Terminate();
 
  static llvm::StringRef GetPluginNameStatic() { return "kdp-remote"; }
 
  static llvm::StringRef GetPluginDescriptionStatic();
 
  // Constructors and Destructors
  ProcessKDP(lldb::TargetSP target_sp, lldb::ListenerSP listener);
 
  ~ProcessKDP() override;
 
  // Check if a given Process
  bool CanDebug(lldb::TargetSP target_sp,
                bool plugin_specified_by_name) override;
  lldb_private::CommandObject *GetPluginCommandObject() override;
 
  // Creating a new process, or attaching to an existing one
  lldb_private::Status DoWillLaunch(lldb_private::Module *module) override;
 
  lldb_private::Status
  DoLaunch(lldb_private::Module *exe_module,
           lldb_private::ProcessLaunchInfo &launch_info) override;
 
  lldb_private::Status DoWillAttachToProcessWithID(lldb::pid_t pid) override;
 
  lldb_private::Status
  DoWillAttachToProcessWithName(const char *process_name,
                                bool wait_for_launch) override;
 
  lldb_private::Status DoConnectRemote(llvm::StringRef remote_url) override;
 
  lldb_private::Status DoAttachToProcessWithID(
      lldb::pid_t pid,
      const lldb_private::ProcessAttachInfo &attach_info) override;
 
  lldb_private::Status DoAttachToProcessWithName(
      const char *process_name,
      const lldb_private::ProcessAttachInfo &attach_info) override;
 
  void DidAttach(lldb_private::ArchSpec &process_arch) override;
 
  lldb::addr_t GetImageInfoAddress() override;
 
  lldb_private::DynamicLoader *GetDynamicLoader() override;
 
  // PluginInterface protocol
  llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
 
  // Process Control
  lldb_private::Status WillResume() override;
 
  lldb_private::Status DoResume() override;
 
  lldb_private::Status DoHalt(bool &caused_stop) override;
 
  lldb_private::Status DoDetach(bool keep_stopped) override;
 
  lldb_private::Status DoSignal(int signal) override;
 
  lldb_private::Status DoDestroy() override;
 
  void RefreshStateAfterStop() override;
 
  // Process Queries
  bool IsAlive() override;
 
  // Process Memory
  size_t DoReadMemory(lldb::addr_t addr, void *buf, size_t size,
                      lldb_private::Status &error) override;
 
  size_t DoWriteMemory(lldb::addr_t addr, const void *buf, size_t size,
                       lldb_private::Status &error) override;
 
  lldb::addr_t DoAllocateMemory(size_t size, uint32_t permissions,
                                lldb_private::Status &error) override;
 
  lldb_private::Status DoDeallocateMemory(lldb::addr_t ptr) override;
 
  // Process Breakpoints
  lldb_private::Status
  EnableBreakpointSite(lldb_private::BreakpointSite *bp_site) override;
 
  lldb_private::Status
  DisableBreakpointSite(lldb_private::BreakpointSite *bp_site) override;
 
  // Process Watchpoints
  lldb_private::Status EnableWatchpoint(lldb_private::Watchpoint *wp,
                                        bool notify = true) override;
 
  lldb_private::Status DisableWatchpoint(lldb_private::Watchpoint *wp,
                                         bool notify = true) override;
 
  CommunicationKDP &GetCommunication() { return m_comm; }
 
protected:
  friend class ThreadKDP;
  friend class CommunicationKDP;
 
  // Accessors
  bool IsRunning(lldb::StateType state) {
    return state == lldb::eStateRunning || IsStepping(state);
  }
 
  bool IsStepping(lldb::StateType state) {
    return state == lldb::eStateStepping;
  }
 
  bool CanResume(lldb::StateType state) { return state == lldb::eStateStopped; }
 
  bool HasExited(lldb::StateType state) { return state == lldb::eStateExited; }
 
  bool GetHostArchitecture(lldb_private::ArchSpec &arch);
 
  bool ProcessIDIsValid() const;
 
  void Clear();
 
  bool DoUpdateThreadList(lldb_private::ThreadList &old_thread_list,
                          lldb_private::ThreadList &new_thread_list) override;
 
  enum {
    eBroadcastBitAsyncContinue = (1 << 0),
    eBroadcastBitAsyncThreadShouldExit = (1 << 1)
  };
 
  lldb::ThreadSP GetKernelThread();
 
  /// Broadcaster event bits definitions.
  CommunicationKDP m_comm;
  lldb_private::Broadcaster m_async_broadcaster;
  lldb_private::HostThread m_async_thread;
  llvm::StringRef m_dyld_plugin_name;
  lldb::addr_t m_kernel_load_addr;
  lldb::CommandObjectSP m_command_sp;
  lldb::ThreadWP m_kernel_thread_wp;
 
  bool StartAsyncThread();
 
  void StopAsyncThread();
 
  void *AsyncThread();
 
private:
  // For ProcessKDP only
 
  ProcessKDP(const ProcessKDP &) = delete;
  const ProcessKDP &operator=(const ProcessKDP &) = delete;
};
 
#endif // LLDB_SOURCE_PLUGINS_PROCESS_MACOSX_KERNEL_PROCESSKDP_H