final static int OPEN_MAX = 256;
/** Table containing all open file descriptors. (Entries are null if the fd is not in use */
FD[] fds = new FD[OPEN_MAX];
+
+ /** Pointer to a callback for the call_java syscall */
+ protected CallJavaCB callJavaCB;
+ public void setCallJavaCB(CallJavaCB callJavaCB) { this.callJavaCB = callJavaCB; }
+ public CallJavaCB getCallJavaCB() { return callJavaCB; }
/** Temporary buffer for read/write operations */
private byte[] _byteBuf = null;
/** Hook for subclasses to do their own startup */
protected void _start() { /* noop */ }
+ // FEATURE: call() that accepts an Object[] array and automatically allocates strings/arrays/etc on the stack
public final int call(String sym) throws CallException { return call(sym,0,0,0,0,0,0,0); }
public final int call(String sym, int a0) throws CallException { return call(sym,a0,0,0,0,0,0,0); }
public final int call(String sym, int a0, int a1) throws CallException { return call(sym,a0,a1,0,0,0,0,0); }
return cpustate.r[V1];
}
- // FEATURE: This is ugly - we should have some kind of way to specify a callback rather than requiring subclassing
- protected int callJava(int a, int b, int c, int d) {
- System.err.println("WARNING: Default implementation of callJava() called with args " + toHex(a) + "," + toHex(b) + "," + toHex(c) + "," + toHex(d));
- return 0;
- }
-
/** Determines if the process can access <i>fileName</i>. The default implementation simply logs
the request and allows it */
protected boolean allowFileAccess(String fileName, boolean write) {
private int sys_getpid() { return getPid(); }
protected int getPid() { return 1; }
+ public static interface CallJavaCB { public int call(int a, int b, int c, int d); }
+
private int sys_calljava(int a, int b, int c, int d) {
if(state != RUNNING) throw new IllegalStateException("wound up calling sys_calljava while not in RUNNING");
- state = CALLJAVA;
- int ret = callJava(a,b,c,d);
- state = RUNNING;
- return ret;
+ if(callJavaCB != null) {
+ state = CALLJAVA;
+ int ret = callJavaCB.call(a,b,c,d);
+ state = RUNNING;
+ return ret;
+ } else {
+ System.err.println("WARNING: calljava syscall invoked without a calljava callback set");
+ return 0;
+ }
}
private int sys_pause() {
import org.ibex.nestedvm.Runtime;
import java.io.*;
+import java.util.Date;
public class CallTest {
public static void main(String[] args) throws Exception {
int a6 = args.length > 5 ? Integer.parseInt(args[5]) : 0;
System.out.println("Version is: " + System.getProperty("os.version"));
- Runtime rt;
+ final Runtime rt;
if(a1 == 99) // yeah.. this is ugly
rt = new org.ibex.nestedvm.Interpreter("build/tests/Test.mips");
else
- //FIXME: Callback not subclass
- rt = new Test() {
- protected int callJava(int a, int b, int c, int d) {
+ rt = (Runtime) Class.forName("tests.Test").newInstance();
+
+ rt.setCallJavaCB(new Runtime.CallJavaCB() {
+ public int call(int a, int b, int c, int d) {
switch(a) {
- case 1: return strdup("OS: " + System.getProperty("os.name"));
- case 2: return strdup(System.getProperty("os.version"));
- case 3: return strdup(new Date().toString());
- case 4: return allocFDEnt(new OutputStreamFD(new CustomOS()));
+ case 1: return rt.strdup("OS: " + System.getProperty("os.name"));
+ case 2: return rt.strdup(System.getProperty("os.version"));
+ case 3: return rt.strdup(new Date().toString());
+ case 4: return rt.addFD(new Runtime.OutputStreamFD(new CustomOS()));
case 5:
System.out.println("In callJava() in Java");
- try { call("backinmips"); } catch(CallException e) { }
+ try { rt.call("backinmips"); } catch(Runtime.CallException e) { }
System.out.println("Back in callJava() in Java");
return 0;
- default: return super.callJava(a,b,c,d);
+ default: return 0;
}
}
- };
+ });
System.out.println("Runtime: " + rt);
rt.start(new String[]{"Test","calltest"});