CODEWITHSUNDEEP
java
mlethys
mlethys

Reputation: 436

How to add asm library to java project?

I have simple question but I couldn't find an answer ;/ How can I create and call assembler library inside java project? I have found something like this to call created library: 

public class Hello {
    public static void main(String[] args) {
            System.out.println("start");

            System.loadLibrary("native");
            (new Hello()).nativeCode();

            System.out.println("stop");
    }

    public native void nativeCode();

}

but solution to create library is based on linux so I cant figure out how to do it on win 7 64 bit. Do you have any ideas? Thanks from advice.

Upvotes: 1

Views: 509

Answers (1)

Wyzard
Wyzard

Reputation: 34581

Calling native code from Java is accomplished using JNI. You'll need to write a Java class that includes method(s) declared using the native keyword, and in your native library you'll need to include a corresponding function with the appropriate name and parameters for the JVM to call.

Since the native function called by the JVM takes arguments whose types are defined in the C header jni.h, and you interact with the JVM by calling C functions declared in that same header, you'll probably find it easiest to write some C (or C++) code of your own to act as an intermediary between the JVM and your assembler code.

The details of how to actually build the native library are platform-specific, but not Java-specific; on Windows, Java's System.loadLibrary() just loads ordinary DLL files. Your compiler/assembler documentation should provide information on how to build one.

Upvotes: 2

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