--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/native/libjimage/NativeImageBuffer.cpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   - Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *
+ *   - Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ *   - Neither the name of Oracle nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string.h>
+
+#include "jni.h"
+#include "jni_util.h"
+
+#include "endian.hpp"
+#include "imageDecompressor.hpp"
+#include "imageFile.hpp"
+#include "inttypes.hpp"
+#include "jimage.hpp"
+#include "osSupport.hpp"
+
+#include "jdk_internal_jimage_NativeImageBuffer.h"
+
+
+JNIEXPORT jobject JNICALL
+Java_jdk_internal_jimage_NativeImageBuffer_getNativeMap(JNIEnv *env,
+        jclass cls, jstring path) {
+    const char *nativePath = env->GetStringUTFChars(path, NULL);
+    ImageFileReader* reader = ImageFileReader::find_image(nativePath);
+    env->ReleaseStringUTFChars(path, nativePath);
+
+    if (reader != NULL) {
+        return env->NewDirectByteBuffer(reader->get_index_address(), (jlong)reader->map_size());
+    }
+
+    return 0;
+}