--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/native/libjava/Module.c	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,178 @@
+/*
+ * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+#include <stdlib.h>
+#include <string.h>
+
+#include "jni.h"
+#include "jni_util.h"
+#include "jvm.h"
+
+#include "java_lang_Module.h"
+
+/*
+ * Gets the UTF-8 chars for the string and translates '.' to '/'.  Does no
+ * further validation, assumption being that both calling code in
+ * java.lang.Module and VM will do deeper validation.
+ */
+static char*
+GetInternalPackageName(JNIEnv *env, jstring pkg, char* buf, jsize buf_size)
+{
+    jsize len;
+    jsize unicode_len;
+    char* p;
+    char* utf_str;
+
+    len = (*env)->GetStringUTFLength(env, pkg);
+    unicode_len = (*env)->GetStringLength(env, pkg);
+    if (len >= buf_size) {
+        utf_str = malloc(len + 1);
+        if (utf_str == NULL) {
+            JNU_ThrowOutOfMemoryError(env, NULL);
+            return NULL;
+        }
+    } else {
+        utf_str = buf;
+    }
+    (*env)->GetStringUTFRegion(env, pkg, 0, unicode_len, utf_str);
+
+    p = utf_str;
+    while (*p != '\0') {
+        if (*p == '.') {
+            *p = '/';
+        }
+        p++;
+    }
+    return utf_str;
+}
+
+JNIEXPORT void JNICALL
+Java_java_lang_Module_defineModule0(JNIEnv *env, jclass cls, jobject module,
+                                            jboolean is_open, jstring version,
+                                            jstring location, jobjectArray packages)
+{
+    char** pkgs = NULL;
+    jsize num_packages = (*env)->GetArrayLength(env, packages);
+
+    if (num_packages != 0 && (pkgs = calloc(num_packages, sizeof(char*))) == NULL) {
+        JNU_ThrowOutOfMemoryError(env, NULL);
+        return;
+    } else if ((*env)->EnsureLocalCapacity(env, (jint)num_packages) == 0) {
+        jboolean failed = JNI_FALSE;
+        int idx;
+        for (idx = 0; idx < num_packages; idx++) {
+            jstring pkg = (*env)->GetObjectArrayElement(env, packages, idx);
+            char* name = GetInternalPackageName(env, pkg, NULL, 0);
+            if (name != NULL) {
+                pkgs[idx] = name;
+            } else {
+                failed = JNI_TRUE;
+                break;
+            }
+        }
+        if (!failed) {
+            JVM_DefineModule(env, module, is_open, version, location,
+                             (const char* const*)pkgs, num_packages);
+        }
+    }
+
+    if (num_packages > 0) {
+        int idx;
+        for (idx = 0; idx < num_packages; idx++) {
+            if (pkgs[idx] != NULL) {
+                free(pkgs[idx]);
+            }
+        }
+        free(pkgs);
+    }
+}
+
+JNIEXPORT void JNICALL
+Java_java_lang_Module_addReads0(JNIEnv *env, jclass cls, jobject from, jobject to)
+{
+    JVM_AddReadsModule(env, from, to);
+}
+
+JNIEXPORT void JNICALL
+Java_java_lang_Module_addExports0(JNIEnv *env, jclass cls, jobject from,
+                                  jstring pkg, jobject to)
+{
+    char buf[128];
+    char* pkg_name;
+
+    if (pkg == NULL) {
+        JNU_ThrowNullPointerException(env, "package is null");
+        return;
+    }
+
+    pkg_name = GetInternalPackageName(env, pkg, buf, (jsize)sizeof(buf));
+    if (pkg_name != NULL) {
+        JVM_AddModuleExports(env, from, pkg_name, to);
+        if (pkg_name != buf) {
+            free(pkg_name);
+        }
+    }
+}
+
+JNIEXPORT void JNICALL
+Java_java_lang_Module_addExportsToAll0(JNIEnv *env, jclass cls, jobject from,
+                                       jstring pkg)
+{
+    char buf[128];
+    char* pkg_name;
+
+    if (pkg == NULL) {
+        JNU_ThrowNullPointerException(env, "package is null");
+        return;
+    }
+
+    pkg_name = GetInternalPackageName(env, pkg, buf, (jsize)sizeof(buf));
+    if (pkg_name != NULL) {
+        JVM_AddModuleExportsToAll(env, from, pkg_name);
+        if (pkg_name != buf) {
+            free(pkg_name);
+        }
+    }
+}
+
+JNIEXPORT void JNICALL
+Java_java_lang_Module_addExportsToAllUnnamed0(JNIEnv *env, jclass cls,
+                                              jobject from, jstring pkg)
+{
+    char buf[128];
+    char* pkg_name;
+
+    if (pkg == NULL) {
+        JNU_ThrowNullPointerException(env, "package is null");
+        return;
+    }
+
+    pkg_name = GetInternalPackageName(env, pkg, buf, (jsize)sizeof(buf));
+    if (pkg_name != NULL) {
+        JVM_AddModuleExportsToAllUnnamed(env, from, pkg_name);
+        if (pkg_name != buf) {
+            free(pkg_name);
+        }
+    }
+}