//-------------------------------------------------------------------
//	ShowEflags.cpp
//
//	This example shows how to write a shared library function in 
//	C++ so that it can be called from a program written in Java.
//	It is adapted from the demo-program by Horstmann and Cornell 
//	in "Core Java 2, Volume II (2nd Ed.)," Prentice-Hall (2005),
//	although our example uses some inline x86 assembly language.
//
//	compile using:
//	    $ g++ -fPIC -shared -o libShowEflags.so ShowEflags.cpp
//	    $ javac ShowEflags.java
//
//	execute using:
//	    $ export LD_LIBRARY_PATH=.:$LD_LIBRARY_PATH
//	    $ java ShowEflags
//
//
//	NOTE: Developed using the Fedora Core 3 Linux distribution: 
//	kernel version 2.6.9-1.667 (as installed in November 2004).
//
//	programmer: ALLAN CRUSE
//	written on: 01 JUN 2005
//-------------------------------------------------------------------

#include <jni.h>

extern "C" 
{
    JNIEXPORT void JNICALL Java_ShowEflags_output( JNIEnv *env, jclass c )
    {
	unsigned int	eflags;

	asm(" pushfl \n popl %0 " : "=m" (eflags) );
	printf( "\n\tEFLAGS=%08X \n\n", eflags );
    }  
}