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diff --git a/src/lib/simics_stdio.h b/src/lib/simics_stdio.h
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+++ b/src/lib/simics_stdio.h
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+#ifndef __SIMICS_STDIO_H__
+#define __SIMICS_STDIO_H__
+
+// $Id: simics_stdio.h,v 1.1.1.1 2013/12/11 20:49:20 bcbrock Exp $
+// $Source: /afs/awd/projects/eclipz/KnowledgeBase/.cvsroot/eclipz/chips/p8/working/procedures/lib/simics_stdio.h,v $
+//-----------------------------------------------------------------------------
+// *! (C) Copyright International Business Machines Corp. 2013
+// *! All Rights Reserved -- Property of IBM
+// *! *** IBM Confidential ***
+//-----------------------------------------------------------------------------
+
+/// \file simics_stdio.h
+/// \brief SSX I/O implementations for Simics stdio streams
+
+#include "ssx_io.h"
+#include "simics_stdio_addresses.h"
+#include "string.h"
+
+/// A FILE structure for a Simics fake stdio stream
+
+typedef struct {
+
+    /// The base class
+    FILE stream;
+
+    /// The MMIO address of the Simics read port for the stream
+    SsxAddress read_address;
+
+    /// The MMIO address of the Simics write port for the stream
+    SsxAddress write_address;
+
+    /// The MMIO address of the Simics device for flushing the stream;
+    SsxAddress flush_address;
+
+} SimicsStdio;
+
+extern SimicsStdio simics_stdin;
+extern SimicsStdio simics_stdout;
+extern SimicsStdio simics_stderr;
+
+int
+simics_stdio_create(SimicsStdio* stream, 
+                    SsxAddress read_address,
+                    SsxAddress write_address,
+                    SsxAddress flush_address);
+
+int
+simics_stdin_create(SimicsStdio *stream);
+
+int
+simics_stdout_create(SimicsStdio *stream);
+
+int
+simics_stderr_create(SimicsStdio *stream);
+
+int
+simics_stdfile_create(SimicsStdio *stream, int fn);
+
+int
+simics_stdio_sread(FILE *stream, void *buf, size_t count, size_t *read);
+
+int
+simics_stdio_swrite(FILE *stream, const void *buf,
+                    size_t count, size_t *written);
+
+int 
+simics_stdio_sflush(FILE *stream);
+
+#endif /* __SIMICS_STDIO_H__ */