1 files changed, 98 insertions, 0 deletions
diff --git a/source/Plugins/Process/Windows/Common/TargetThreadWindows.cpp b/source/Plugins/Process/Windows/Common/TargetThreadWindows.cpp
new file mode 100644
index 0000000000000..dcb6f0c72435f
--- /dev/null
+++ b/source/Plugins/Process/Windows/Common/TargetThreadWindows.cpp
@@ -0,0 +1,98 @@
+//===-- TargetThreadWindows.cpp----------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Core/Log.h"
+#include "lldb/Core/Logging.h"
+#include "lldb/Core/State.h"
+#include "lldb/Host/HostInfo.h"
+#include "lldb/Host/HostNativeThreadBase.h"
+#include "lldb/Host/windows/HostThreadWindows.h"
+#include "lldb/Host/windows/windows.h"
+#include "lldb/Target/RegisterContext.h"
+
+#include "TargetThreadWindows.h"
+#include "ProcessWindows.h"
+#include "ProcessWindowsLog.h"
+#include "UnwindLLDB.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+TargetThreadWindows::TargetThreadWindows(ProcessWindows &process, const HostThread &thread)
+    : Thread(process, thread.GetNativeThread().GetThreadId())
+    , m_host_thread(thread)
+{
+}
+
+TargetThreadWindows::~TargetThreadWindows()
+{
+    DestroyThread();
+}
+
+void
+TargetThreadWindows::RefreshStateAfterStop()
+{
+    ::SuspendThread(m_host_thread.GetNativeThread().GetSystemHandle());
+    SetState(eStateStopped);
+    GetRegisterContext()->InvalidateIfNeeded(false);
+}
+
+void
+TargetThreadWindows::WillResume(lldb::StateType resume_state)
+{
+}
+
+void
+TargetThreadWindows::DidStop()
+{
+}
+
+bool
+TargetThreadWindows::CalculateStopInfo()
+{
+    SetStopInfo(m_stop_info_sp);
+    return true;
+}
+
+Unwind *
+TargetThreadWindows::GetUnwinder()
+{
+    // FIXME: Implement an unwinder based on the Windows unwinder exposed through DIA SDK.
+    if (m_unwinder_ap.get() == NULL)
+        m_unwinder_ap.reset(new UnwindLLDB(*this));
+    return m_unwinder_ap.get();
+}
+
+bool
+TargetThreadWindows::DoResume()
+{
+    StateType resume_state = GetTemporaryResumeState();
+    StateType current_state = GetState();
+    if (resume_state == current_state)
+        return true;
+
+    if (resume_state == eStateStepping)
+    {
+        uint32_t flags_index = GetRegisterContext()->ConvertRegisterKindToRegisterNumber(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_FLAGS);
+        uint64_t flags_value = GetRegisterContext()->ReadRegisterAsUnsigned(flags_index, 0);
+        flags_value |= 0x100; // Set the trap flag on the CPU
+        GetRegisterContext()->WriteRegisterFromUnsigned(flags_index, flags_value);
+    }
+
+    if (resume_state == eStateStepping || resume_state == eStateRunning)
+    {
+        DWORD previous_suspend_count = 0;
+        HANDLE thread_handle = m_host_thread.GetNativeThread().GetSystemHandle();
+        do
+        {
+            previous_suspend_count = ::ResumeThread(thread_handle);
+        } while (previous_suspend_count > 0);
+    }
+    return true;
+}