--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/java.base/windows/native/libjimage/osSupport_windows.cpp	Fri Sep 04 10:11:43 2015 -0300
@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2015, 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.
+ *
+ * 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 <windows.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <io.h>
+#include <malloc.h>
+
+#include "jni.h"
+#include "osSupport.hpp"
+
+/**
+ * Open a regular file read-only.
+ * Return the file descriptor.
+ */
+jint osSupport::openReadOnly(const char *path) {
+    return ::open(path, 0, 0);
+}
+
+/**
+ * Close a file descriptor.
+ */
+jint osSupport::close(jint fd) {
+    return ::close(fd);
+}
+
+/**
+ * Return the size of a regular file.
+ */
+jlong osSupport::size(const char *path) {
+    struct stat statbuf;
+    if (stat(path, &statbuf) < 0 ||
+            (statbuf.st_mode & S_IFREG) != S_IFREG) {
+        return -1;
+    }
+    return (jlong) statbuf.st_size;
+}
+
+/**
+ * Read nBytes at offset into a buffer.
+ */
+jlong osSupport::read(jint fd, char *buf, jlong nBytes, jlong offset) {
+    OVERLAPPED ov;
+    DWORD nread;
+    BOOL result;
+
+    ZeroMemory(&ov, sizeof (ov));
+    ov.Offset = (DWORD) offset;
+    ov.OffsetHigh = (DWORD) (offset >> 32);
+
+    HANDLE h = (HANDLE)::_get_osfhandle(fd);
+
+    result = ReadFile(h, (LPVOID) buf, (DWORD) nBytes, &nread, &ov);
+
+    return result ? nread : 0;
+}
+
+/**
+ * Map nBytes at offset into memory and return the address.
+ * The system chooses the address.
+ */
+void* osSupport::map_memory(jint fd, const char *file_name, size_t file_offset, size_t bytes) {
+    HANDLE hFile;
+    char* base = NULL;
+
+    // Get a handle to the file
+    hFile = CreateFile(file_name, GENERIC_READ, FILE_SHARE_READ, NULL,
+            OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+    if (hFile != NULL) {
+        // Create a file mapping handle
+        HANDLE hMap = CreateFileMapping(hFile, NULL, PAGE_READONLY, 0, 0,
+                NULL /* file_name */);
+        if (hMap != NULL) {
+            // Map the file into the address space at the offset
+            base = (char*) MapViewOfFileEx(hMap, FILE_MAP_READ, 0, (DWORD) file_offset,
+                    (DWORD) bytes, NULL);
+            CloseHandle(hMap); // The mapping is no longer needed
+        }
+        CloseHandle(hFile); // The file handle is no longer needed
+    }
+    return base;
+}
+
+/**
+ * Unmap nBytes of memory at address.
+ */
+int osSupport::unmap_memory(void* addr, size_t bytes) {
+    BOOL result = UnmapViewOfFile(addr);
+    return result;
+}
+
+/**
+ * A CriticalSection to protect a small section of code.
+ */
+void SimpleCriticalSection::enter() {
+    EnterCriticalSection(&critical_section);
+}
+
+void SimpleCriticalSection::exit() {
+    LeaveCriticalSection(&critical_section);
+}
+
+SimpleCriticalSection::SimpleCriticalSection() {
+    InitializeCriticalSection(&critical_section);
+}
+
+//SimpleCriticalSection::~SimpleCriticalSection() {
+//    DeleteCriticalSection(&critical_section);
+//}
+