Fix incomplete commit of http://llvm.org/viewvc/llvm-project?rev=147609&view=rev:

This patch combines common code from Linux and FreeBSD into
a new POSIX platform.  It also contains fixes for 64bit FreeBSD.

The patch is based on changes by Mark Peek <mp@FreeBSD.org> and
"K. Macy" <kmacy@freebsd.org> in their github repo located at
https://github.com/fbsd/lldb.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@147613 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Plugins/Process/POSIX/POSIXThread.h b/source/Plugins/Process/POSIX/POSIXThread.h
new file mode 100644
index 0000000..95280d4
--- /dev/null
+++ b/source/Plugins/Process/POSIX/POSIXThread.h
@@ -0,0 +1,106 @@
+//===-- POSIXThread.h -------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef liblldb_POSIXThread_H_
+#define liblldb_POSIXThread_H_
+
+// C Includes
+// C++ Includes
+#include <memory>
+
+// Other libraries and framework includes
+#include "lldb/Target/Thread.h"
+#include "RegisterContextPOSIX.h"
+
+class ProcessMessage;
+class ProcessMonitor;
+class RegisterContextPOSIX;
+
+//------------------------------------------------------------------------------
+// @class POSIXThread
+// @brief Abstraction of a linux process (thread).
+class POSIXThread
+    : public lldb_private::Thread
+{
+public:
+    POSIXThread(lldb_private::Process &process, lldb::tid_t tid);
+
+    virtual ~POSIXThread();
+
+    void
+    RefreshStateAfterStop();
+
+    bool
+    WillResume(lldb::StateType resume_state);
+
+    const char *
+    GetInfo();
+
+    virtual lldb::RegisterContextSP
+    GetRegisterContext();
+
+    virtual lldb::RegisterContextSP
+    CreateRegisterContextForFrame (lldb_private::StackFrame *frame);
+
+    //--------------------------------------------------------------------------
+    // These static functions provide a mapping from the register offset
+    // back to the register index or name for use in debugging or log
+    // output.
+
+    static unsigned
+    GetRegisterIndexFromOffset(unsigned offset);
+
+    static const char *
+    GetRegisterName(unsigned reg);
+
+    static const char *
+    GetRegisterNameFromOffset(unsigned offset);
+
+    //--------------------------------------------------------------------------
+    // These methods form a specialized interface to linux threads.
+    //
+    bool Resume();
+
+    void Notify(const ProcessMessage &message);
+
+private:
+    RegisterContextPOSIX *
+    GetRegisterContextPOSIX ()
+    {
+        if (!m_reg_context_sp)
+            m_reg_context_sp = GetRegisterContext();
+#if 0
+        return dynamic_cast<RegisterContextPOSIX*>(m_reg_context_sp.get());
+#endif
+        return (RegisterContextPOSIX *)m_reg_context_sp.get();
+    }
+    
+    std::auto_ptr<lldb_private::StackFrame> m_frame_ap;
+
+    lldb::BreakpointSiteSP m_breakpoint;
+    lldb::StopInfoSP m_stop_info;
+
+    ProcessMonitor &
+    GetMonitor();
+
+    lldb::StopInfoSP
+    GetPrivateStopReason();
+
+    void BreakNotify(const ProcessMessage &message);
+    void TraceNotify(const ProcessMessage &message);
+    void LimboNotify(const ProcessMessage &message);
+    void SignalNotify(const ProcessMessage &message);
+    void SignalDeliveredNotify(const ProcessMessage &message);
+    void CrashNotify(const ProcessMessage &message);
+
+    lldb_private::Unwind *
+    GetUnwinder();
+};
+
+#endif // #ifndef liblldb_POSIXThread_H_