/*
* DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
* Version 2, December 2004
*
* Copyright (C) 2018 Olaf Wintermann <olaf.wintermann@gmail.com>
*
* Everyone is permitted to copy and distribute verbatim or modified
* copies of this license document, and changing it is allowed as long
* as the name is changed.
*
* DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
* TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
*
* 0. You just DO WHAT THE FUCK YOU WANT TO.
*/
// GraalVM example: mixing Java and native Code (LLVM bitcode)
import org.graalvm.polyglot.*;
import java.io.*;
/*
* create a file test.c with the following content and compile it with:
* clang -c -O1 -emit-llvm test.c
#include <stdio.h>
int main(void) {
printf("Hello World!\n");
return 0;
}
int add(int a, int b) {
return a+b;
}
*/
public class HelloPolyglot {
public static void main(String[] args) {
try {
// create a polyglot context that can access the native interface
Context ctx = Context.newBuilder().allowAllAccess(true).build();
// load an llvm bitcode file
File file = new File("test.bc");
Source source = Source.newBuilder("llvm", file).build();
Value c = ctx.eval(source);
// get the main function and execute it
c.getMember("main").execute();
// get add function
Value add = c.getMember("add");
Value ret = add.execute(10, 20);
System.out.println(ret.asInt());
} catch (IOException e) {
System.err.println(e);
}
}
}