gem5ops: Implement Java JNI for gem5Ops

These ops allow gem5 ops to be called from within java programs like the following:
import jni.gem5Op;

public  class HelloWorld {

    public static void main(String[] args) {
        gem5Op gem5 = new gem5Op();
        System.out.println("Rpns0:" + gem5.rpns());
        System.out.println("Rpns1:" + gem5.rpns());
    }

    static {
        System.loadLibrary("gem5OpJni");
    }
}

When building you need to make sure classpath include gem5OpJni.jar:
javac -classpath $CLASSPATH:/path/to/gem5OpJni.jar HelloWorld.java

and when running you need to make sure both the java and library path are set:
java -classpath $CLASSPATH:/path/to/gem5OpJni.jar -Djava.library.path=/path/to/libgem5OpJni.so HelloWorld

1 files changed, 67 insertions, 0 deletions

diff --git a/util/m5/jni/gem5Op.java b/util/m5/jni/gem5Op.java
new file mode 100644
index 000000000..bb324b37c
--- /dev/null
+++ b/util/m5/jni/gem5Op.java
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2010 ARM Limited
+ * All rights reserved
+ *
+ * The license below extends only to copyright in the software and shall
+ * not be construed as granting a license to any other intellectual
+ * property including but not limited to intellectual property relating
+ * to a hardware implementation of the functionality of the software
+ * licensed hereunder.  You may use the software subject to the license
+ * terms below provided that you ensure that this notice is replicated
+ * unmodified and in its entirety in all distributions of the software,
+ * modified or unmodified, in source code or in binary form.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Prakash Ramrakhyani
+ */
+
+package jni;
+
+/**
+ * Java class to implement JNI for m5Ops
+ */
+
+public class gem5Op {
+    public native void arm(long address);
+    public native void quiesce();
+    public native void quiesceNs(long ns);
+    public native void quiesceCycle(long cycles);
+    public native long quiesceTime();
+    public native long rpns();
+    public native void wakeCPU(long cpuid);
+
+    public native void exit(long ns_delay);
+    public native long initparam();
+    public native void checkpoint(long ns_delay, long ns_period);
+    public native void reset_stats(long ns_delay, long ns_period);
+    public native void dump_stats(long ns_delay, long ns_period);
+    public native void dumpreset_stats(long ns_delay, long ns_period);
+    public native void debugbreak();
+    public native void switchcpu();
+    public native void panic();
+    public native void work_begin(long workid, long threadid);
+    public native void work_end(long workid, long threadid);
+
+}