1 files changed, 23 insertions, 0 deletions
diff --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
index b4263d18ca6..8225e69f373 100644
--- a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
+++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
@@ -51,6 +51,7 @@ GDBRemoteCommunicationClient::GDBRemoteCommunicationClient(bool is_platform) :
     m_supports_watchpoint_support_info  (eLazyBoolCalculate),
     m_watchpoints_trigger_after_instruction(eLazyBoolCalculate),
     m_attach_or_wait_reply(eLazyBoolCalculate),
+    m_prepare_for_reg_writing_reply (eLazyBoolCalculate),
     m_supports_qProcessInfoPID (true),
     m_supports_qfProcessInfo (true),
     m_supports_qUserName (true),
@@ -154,6 +155,26 @@ GDBRemoteCommunicationClient::GetVAttachOrWaitSupported ()
         return false;
 }
 
+bool
+GDBRemoteCommunicationClient::GetSyncThreadStateSupported ()
+{
+    if (m_prepare_for_reg_writing_reply == eLazyBoolCalculate)
+    {
+        m_prepare_for_reg_writing_reply = eLazyBoolNo;
+        
+        StringExtractorGDBRemote response;
+        if (SendPacketAndWaitForResponse("qSyncThreadStateSupported", response, false))
+        {
+            if (response.IsOKResponse())
+                m_prepare_for_reg_writing_reply = eLazyBoolYes;
+        }
+    }
+    if (m_prepare_for_reg_writing_reply == eLazyBoolYes)
+        return true;
+    else
+        return false;
+}
+
 
 void
 GDBRemoteCommunicationClient::ResetDiscoverableSettings()
@@ -168,6 +189,8 @@ GDBRemoteCommunicationClient::ResetDiscoverableSettings()
     m_qHostInfo_is_valid = eLazyBoolCalculate;
     m_supports_alloc_dealloc_memory = eLazyBoolCalculate;
     m_supports_memory_region_info = eLazyBoolCalculate;
+    m_prepare_for_reg_writing_reply = eLazyBoolCalculate;
+    m_attach_or_wait_reply = eLazyBoolCalculate;
 
     m_supports_qProcessInfoPID = true;
     m_supports_qfProcessInfo = true;