add boot-javahome.cpp

This should have been included in an earlier commit.

src/boot-javahome.cpp

@@ -0,0 +1,45 @@
+/* Copyright (c) 2010, Avian Contributors
+
+   Permission to use, copy, modify, and/or distribute this software
+   for any purpose with or without fee is hereby granted, provided
+   that the above copyright notice and this permission notice appear
+   in all copies.
+
+   There is NO WARRANTY for this software.  See license.txt for
+   details. */
+
+#ifdef _MSC_VER
+
+typedef unsigned char uint8_t;
+
+#else
+#  include "stdint.h"
+#endif
+
+#ifdef BOOT_JAVAHOME
+
+#if (defined __MINGW32__) || (defined _MSC_VER)
+#  define EXPORT __declspec(dllexport)
+#  define SYMBOL(x) binary_javahome_jar_##x
+#else
+#  define EXPORT __attribute__ ((visibility("default")))
+#  define SYMBOL(x) _binary_javahome_jar_##x
+#endif
+
+extern "C" {
+
+  extern const uint8_t SYMBOL(start)[];
+  extern const uint8_t SYMBOL(end)[];
+
+  EXPORT const uint8_t*
+  javahomeJar(unsigned* size)
+  {
+    *size = SYMBOL(end) - SYMBOL(start);
+    return SYMBOL(start);
+  }
+
+}
+
+#undef SYMBOL
+
+#endif//BOOT_JAVAHOME