1 /*
   2  * Copyright (c) 1998, 2019, 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 #ifndef SHARE_PRIMS_JVM_MISC_HPP
  26 #define SHARE_PRIMS_JVM_MISC_HPP
  27 
  28 #include "jni.h"
  29 #include "runtime/handles.hpp"
  30 
  31 // Useful entry points shared by JNI and JVM interface.
  32 // We do not allow real JNI or JVM entry point to call each other.
  33 
  34 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, jboolean link,
  35                                     Handle loader, Handle protection_domain, jboolean throwError, TRAPS);
  36 
  37 void trace_class_resolution(Klass* to_class);
  38 
  39 /*
  40  * Support for -Xcheck:jni
  41  */
  42 
  43 extern struct JNINativeInterface_* jni_functions_nocheck();
  44 extern struct JNINativeInterface_* jni_functions_check();
  45 
  46 /*
  47  * Support for swappable jni function table.
  48  */
  49 extern struct JNINativeInterface_* jni_functions();
  50 extern void copy_jni_function_table(const struct JNINativeInterface_* new_function_table);
  51 
  52 // Support for fast JNI accessors
  53 extern "C" {
  54   typedef jboolean (JNICALL *GetBooleanField_t)
  55       (JNIEnv *env, jobject obj, jfieldID fieldID);
  56   typedef jbyte (JNICALL *GetByteField_t)
  57       (JNIEnv *env, jobject obj, jfieldID fieldID);
  58   typedef jchar (JNICALL *GetCharField_t)
  59       (JNIEnv *env, jobject obj, jfieldID fieldID);
  60   typedef jshort (JNICALL *GetShortField_t)
  61       (JNIEnv *env, jobject obj, jfieldID fieldID);
  62   typedef jint (JNICALL *GetIntField_t)
  63       (JNIEnv *env, jobject obj, jfieldID fieldID);
  64   typedef jlong (JNICALL *GetLongField_t)
  65       (JNIEnv *env, jobject obj, jfieldID fieldID);
  66   typedef jfloat (JNICALL *GetFloatField_t)
  67       (JNIEnv *env, jobject obj, jfieldID fieldID);
  68   typedef jdouble (JNICALL *GetDoubleField_t)
  69     (JNIEnv *env, jobject obj, jfieldID fieldID);
  70 }
  71 
  72 void    quicken_jni_functions();
  73 address jni_GetBooleanField_addr();
  74 address jni_GetByteField_addr();
  75 address jni_GetCharField_addr();
  76 address jni_GetShortField_addr();
  77 address jni_GetIntField_addr();
  78 address jni_GetLongField_addr();
  79 address jni_GetFloatField_addr();
  80 address jni_GetDoubleField_addr();
  81 
  82 #endif // SHARE_PRIMS_JVM_MISC_HPP