2 files changed, 56 insertions, 6 deletions
diff --git a/libjava/java/lang/VMSecurityManager.java b/libjava/java/lang/VMSecurityManager.java
index fd16804..f6f0645 100644
--- a/libjava/java/lang/VMSecurityManager.java
+++ b/libjava/java/lang/VMSecurityManager.java
@@ -1,6 +1,6 @@
 /*
  * java.lang.SecurityManager: part of the Java Class Libraries project.
- * Copyright (C) 1998, 2001 Free Software Foundation
+ * Copyright (C) 1998, 2001, 2002 Free Software Foundation
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ -43,11 +43,7 @@ class VMSecurityManager
    ** @return an array containing all the methods on classes
    **         on the Java execution stack.
    **/
-  static Class[] getClassContext()
-  {
-    // FIXME: can't yet implement this for libgcj.
-    return new Class[0];
-  }
+  static native Class[] getClassContext();
 
   /** Get the current ClassLoader--the one nearest to the
    ** top of the stack.
diff --git a/libjava/java/lang/natVMSecurityManager.cc b/libjava/java/lang/natVMSecurityManager.cc
new file mode 100644
index 0000000..7b88e8a
--- /dev/null
+++ b/libjava/java/lang/natVMSecurityManager.cc
@@ -0,0 +1,54 @@
+/* Copyright (C) 2002  Free Software Foundation
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+// Written by Tom Tromey <tromey@redhat.com>
+
+#include <config.h>
+
+#include <gcj/cni.h>
+#include <jvm.h>
+#include <java/lang/VMSecurityManager.h>
+#include <java/lang/SecurityManager.h>
+#include <java/lang/ClassLoader.h>
+#include <java/lang/Class.h>
+#include <gnu/gcj/runtime/StackTrace.h>
+
+JArray<jclass> *
+java::lang::VMSecurityManager::getClassContext ()
+{
+  JArray<jclass> *result = NULL;
+  gnu::gcj::runtime::StackTrace *t = new gnu::gcj::runtime::StackTrace();
+  if (t)
+    {
+      int maxlen = t->length();
+
+      int len = 0;
+      while (len < maxlen)
+	{
+	  jclass klass = t->classAt(len);
+	  if (klass != NULL && klass != &java::lang::VMSecurityManager::class$
+	      && klass != &java::lang::SecurityManager::class$)
+	    ++len;
+	}
+
+      result =
+	(JArray<jclass> *) _Jv_NewObjectArray (len, &java::lang::Class::class$,
+					       NULL);
+
+      len = 0;
+      while (len < maxlen)
+	{
+	  jclass klass = t->classAt(len);
+	  if (klass != NULL && klass != &java::lang::VMSecurityManager::class$
+	      && klass != &java::lang::SecurityManager::class$)
+	    elements(result)[len++] = klass;
+	}
+    }
+
+  return result;
+}