1 files changed, 125 insertions, 0 deletions
diff --git a/libjava/classpath/native/jni/classpath/jnilink.c b/libjava/classpath/native/jni/classpath/jnilink.c
new file mode 100644
index 000000000..15e73a721
--- /dev/null
+++ b/libjava/classpath/native/jni/classpath/jnilink.c
@@ -0,0 +1,125 @@
+/* JNILINK 1.1: JNI version.
+   Copyright (C) 1998 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+ 
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+#include <stdlib.h>
+#include <string.h>
+#include <jcl.h>
+
+#include "jnilink.h"
+
+#define GETCLASS(c) *(jclass*)(c)
+
+JNIEXPORT jclass JNICALL
+LINK_RelinkClass (JNIEnv * env, linkedClass * c, const char *name)
+{
+  jclass found;
+  LINK_UnlinkClass (env, *c);
+
+  found = (*env)->FindClass (env, name);
+  if (found == NULL)
+    return NULL;
+
+  *c = JCL_malloc (env, sizeof (jclass));
+  if (*c == NULL)
+    return NULL;
+
+  GETCLASS (*c) = (*env)->NewGlobalRef (env, found);
+  return GETCLASS (*c);
+}
+
+JNIEXPORT jclass JNICALL
+LINK_RelinkKnownClass (JNIEnv * env, linkedClass * c, jclass newClass)
+{
+  LINK_UnlinkClass (env, *c);
+
+  *c = JCL_malloc (env, sizeof (jclass));
+  if (*c == NULL)
+    return NULL;
+
+  GETCLASS (*c) = (*env)->NewGlobalRef (env, newClass);
+  return newClass;
+}
+
+JNIEXPORT jmethodID JNICALL
+LINK_RelinkMethod (JNIEnv * env, jmethodID * m, linkedClass c,
+		   const char *name, const char *sig)
+{
+  *m = (*env)->GetMethodID (env, GETCLASS (c), name, sig);
+  return *m;
+}
+
+JNIEXPORT jmethodID JNICALL
+LINK_RelinkStaticMethod (JNIEnv * env, jmethodID * m, linkedClass c,
+			 const char *name, const char *sig)
+{
+  *m = (*env)->GetStaticMethodID (env, GETCLASS (c), name, sig);
+  return *m;
+}
+
+JNIEXPORT jfieldID JNICALL
+LINK_RelinkField (JNIEnv * env, jfieldID * f, linkedClass c,
+		  const char *name, const char *sig)
+{
+  *f = (*env)->GetFieldID (env, GETCLASS (c), name, sig);
+  return *f;
+}
+
+JNIEXPORT jfieldID JNICALL
+LINK_RelinkStaticField (JNIEnv * env, jfieldID * f, linkedClass c,
+			const char *name, const char *sig)
+{
+  *f = (*env)->GetStaticFieldID (env, GETCLASS (c), name, sig);
+  return *f;
+}
+
+
+/* These are for when the class referencing the symbols is unloaded; it
+destroys any object references
+ * the linker might have kept around.
+ */
+JNIEXPORT void JNICALL
+LINK_UnlinkClass (JNIEnv * env, linkedClass * c)
+{
+  if (*c != NULL)
+    {
+      if (GETCLASS (*c) != NULL)
+	(*env)->DeleteGlobalRef (env, GETCLASS (*c));
+      JCL_free (env, *c);
+      *c = NULL;
+    }
+}