MFC r262528: Update LLDB snapshot to upstream r202189

  Highlights include (upstream revs in parens):

  - Improvements to the remote GDB protocol client
    (r196610, r197579, r197857, r200072, and others)

  - Bug fixes for big-endian targets
    (r196808)

  - Initial support for libdispatch (GCD) queues in the debuggee
    (r197190)

  - Add "step-avoid-libraries" setting
    (r199943)

  - IO subsystem improvements (including initial work on a curses gui)
    (r200263)

  - Support hardware watchpoints on FreeBSD
    (r201706)

  - Improved unwinding through hand-written assembly functions
    (r201839)

  - Handle DW_TAG_unspecified_parameters for variadic functions
    (r202061)

  - Fix Ctrl+C interrupting a running inferior process
    (r202086, r202154)

  - Various bug fixes for memory leaks, LLDB segfaults, the C++ demangler,
    ELF core files, DWARF debug info, and others.

Sponsored by:	DARPA, AFRL

1 files changed, 8 insertions, 5 deletions

diff --git a/contrib/llvm/tools/lldb/source/Target/ExecutionContext.cpp b/contrib/llvm/tools/lldb/source/Target/ExecutionContext.cpp
index 7a8b601..db4025f 100644
--- a/contrib/llvm/tools/lldb/source/Target/ExecutionContext.cpp
+++ b/contrib/llvm/tools/lldb/source/Target/ExecutionContext.cpp
@@ -154,7 +154,7 @@ ExecutionContext::ExecutionContext (const ExecutionContextRef &exe_ctx_ref) :
 {
 }
 
-ExecutionContext::ExecutionContext (const ExecutionContextRef *exe_ctx_ref_ptr) :
+ExecutionContext::ExecutionContext (const ExecutionContextRef *exe_ctx_ref_ptr, bool thread_and_frame_only_if_stopped) :
     m_target_sp (),
     m_process_sp (),
     m_thread_sp (),
@@ -164,8 +164,11 @@ ExecutionContext::ExecutionContext (const ExecutionContextRef *exe_ctx_ref_ptr)
     {
         m_target_sp  = exe_ctx_ref_ptr->GetTargetSP();
         m_process_sp = exe_ctx_ref_ptr->GetProcessSP();
-        m_thread_sp = exe_ctx_ref_ptr->GetThreadSP();
-        m_frame_sp = exe_ctx_ref_ptr->GetFrameSP();
+        if (!thread_and_frame_only_if_stopped || (m_process_sp && StateIsStoppedState(m_process_sp->GetState(), true)))
+        {
+            m_thread_sp = exe_ctx_ref_ptr->GetThreadSP();
+            m_frame_sp = exe_ctx_ref_ptr->GetFrameSP();
+        }
     }
 }
 
@@ -824,9 +827,9 @@ ExecutionContextRef::GetFrameSP () const
 }
 
 ExecutionContext
-ExecutionContextRef::Lock () const
+ExecutionContextRef::Lock (bool thread_and_frame_only_if_stopped) const
 {
-    return ExecutionContext(this);
+    return ExecutionContext(this, thread_and_frame_only_if_stopped);
 }