Add ProcessGDBRemote::GetAuxvData() and fix multiple-packet concatenation for binary data.

ProcessGDBRemote::GetAuxvData obtains the auxv from a remote gdbserver (via a binary-data packet), and returns the data as a DataBufferSP.

The patch includes a small fix to GDBRemoteCommunicationClient::SendPacketsAndConcatenateResponses() to support binary file format packet returns (by not assuming each binary packet is a null-terminated string when concatenating them).

llvm-svn: 202907

1 files changed, 13 insertions, 0 deletions

diff --git a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
index 800bd257061..604906e2a85 100644
--- a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
+++ b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
@@ -3060,6 +3060,19 @@ ProcessGDBRemote::GetDynamicLoader ()
     return m_dyld_ap.get();
 }
 
+const DataBufferSP
+ProcessGDBRemote::GetAuxvData()
+{
+    DataBufferSP buf;
+    if (m_gdb_comm.GetQXferAuxvReadSupported())
+    {
+        std::string response_string;
+        if (m_gdb_comm.SendPacketsAndConcatenateResponses("qXfer:auxv:read::", response_string) == GDBRemoteCommunication::PacketResult::Success)
+            buf.reset(new DataBufferHeap(response_string.c_str(), response_string.length()));
+    }
+    return buf;
+}
+
 
 class CommandObjectProcessGDBRemotePacketHistory : public CommandObjectParsed
 {