Reuse appropriate Launch and Attach on NetBSD

[krytarowski]

Summary

NetBSD ships with NativeProcessNetBSD inherited from NativeProcessProtocol.

Link Plugins/Process/gdb-remote with lldbPluginProcessNetBSD in order to resolve
correctly the linking to Launch and Attach from the NetBSD plugin.

Sponsored by <The NetBSD Foundation>

[krytarowski]

Next, I will work on a code to extend the NetBSD Process Plugin from a stub to a version that actually works.

[krytarowski]

With x86_64 general purpose registers going before that.

source/Host/common/NativeProcessProtocol.cpp

Error NativeProcessProtocol::ResolveProcessArchitecture(lldb::pid_t pid,
 
   arch = module_specs.GetModuleSpecRefAtIndex(0).GetArchitecture();
   if (arch.IsValid())
     return Error();
   else
     return Error("failed to retrieve a valid architecture from the exe module");
 }
 
-#ifndef __linux__
+#if !defined(__linux__) && !defined(__NetBSD__)
 // These need to be implemented to support lldb-gdb-server on a given platform.
 // Stubs are
 // provided to make the rest of the code link on non-supported platforms.
 
 Error NativeProcessProtocol::Launch(ProcessLaunchInfo &launch_info,
                                     NativeDelegate &native_delegate,
                                     MainLoop &mainloop,
                                     NativeProcessProtocolSP &process_sp) {

source/Plugins/Process/gdb-remote/CMakeLists.txt

 if (CMAKE_SYSTEM_NAME MATCHES "Darwin")
   include_directories(${LIBXML2_INCLUDE_DIR})
 endif()
 
 set(LLDB_PLUGINS
   lldbPluginProcessUtility
   lldbPluginPlatformMacOSX
 )
 
 if(CMAKE_SYSTEM_NAME MATCHES "Linux|Android")
   list(APPEND LLDB_PLUGINS lldbPluginProcessLinux)
 endif()
 
+if(CMAKE_SYSTEM_NAME MATCHES "NetBSD")
+  list(APPEND LLDB_PLUGINS lldbPluginProcessNetBSD)
+endif()
+
 add_lldb_library(lldbPluginProcessGDBRemote PLUGIN
   GDBRemoteClientBase.cpp
   GDBRemoteCommunication.cpp
   GDBRemoteCommunicationClient.cpp
   GDBRemoteCommunicationServer.cpp
   GDBRemoteCommunicationServerCommon.cpp
   GDBRemoteCommunicationServerLLGS.cpp
   GDBRemoteCommunicationServerPlatform.cpp