1 /*
 2  * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.
 8  *
 9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  *
23  */
24 
25 #include "precompiled.hpp"
26 #include "runtime/interfaceSupport.inline.hpp"
27 #include "code/vmreg.hpp"
28 
29 JNI_LEAF(jlong, NEP_vmStorageToVMReg(JNIEnv* env, jclass _unused, jint type, jint index))
30   return VMRegImpl::vmStorageToVMReg(type, index)->value();
31 JNI_END
32 
33 #define CC (char*)  /*cast a literal from (const char*)*/
34 #define FN_PTR(f) CAST_FROM_FN_PTR(void*, &f)
35 
36 static JNINativeMethod NEP_methods[] = {
37   {CC "vmStorageToVMReg", CC "(II)J", FN_PTR(NEP_vmStorageToVMReg)},
38 };
39 
40 JNI_ENTRY(void, JVM_RegisterNativeEntryPointMethods(JNIEnv *env, jclass NEP_class))
41   ThreadToNativeFromVM ttnfv(thread);
42   int status = env->RegisterNatives(NEP_class, NEP_methods, sizeof(NEP_methods)/sizeof(JNINativeMethod));
43   guarantee(status == JNI_OK && !env->ExceptionOccurred(),
44             "register jdk.internal.invoke.NativeEntryPoint natives");
45 JNI_END