// FEATURE: This need a lot of work to support binaries spanned across many classes
public class RuntimeCompiler {
- // FEATURE: Do we need to periodicly create a new classloader to allow old clases to be GCed?
- private static SingleClassLoader singleClassLoader = new SingleClassLoader();
- // FEATURE: Is it ok if this overflows?
- private static long nextID = 1;
- private static synchronized String uniqueID() { return Long.toString(nextID++); }
+ private static SingleClassLoader singleClassLoader;
+ private static int nextID;
- public static Class compile(Seekable data) throws IOException, Compiler.Exn {
- String className = "nextedvm.runtimecompiled_" + uniqueID();
+ public static Class compile(Seekable data) throws IOException, Compiler.Exn { return compile(data,null); }
+ public static Class compile(Seekable data, String extraoptions) throws IOException, Compiler.Exn {
+ int id;
+ synchronized(RuntimeCompiler.class) {
+ if(nextID == 32 || singleClassLoader == null) {
+ singleClassLoader = new SingleClassLoader();
+ nextID = 0;
+ }
+ id = nextID++;
+ }
+ String className = "nestedvm.runtimecompiled_" + id;
System.err.println("RuntimeCompiler: Building " + className);
+ byte[] bytecode;
+ try {
+ bytecode = runCompiler(data,className,extraoptions,null);
+ } catch(Compiler.Exn e) {
+ if(e.getMessage() != null || e.getMessage().indexOf("constant pool full") != -1)
+ bytecode = runCompiler(data,className,extraoptions,"lessconstants");
+ else
+ throw e;
+ }
+ return singleClassLoader.fromBytes(className,bytecode);
+ }
+
+ private static byte[] runCompiler(Seekable data, String name, String options, String moreOptions) throws IOException, Compiler.Exn {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
- ClassFileCompiler c = new ClassFileCompiler(data,className,baos);
- // FEATURE: make this Optional, pass options on compile arguments
- c.parseOptions("unixruntime,nosupportcall,maxinsnpermethod=512");
- c.go();
+
+ try {
+ ClassFileCompiler c = new ClassFileCompiler(data,name,baos);
+ c.parseOptions("nosupportcall,maxinsnpermethod=256");
+ if(options != null) c.parseOptions(options);
+ if(moreOptions != null) c.parseOptions(moreOptions);
+ c.go();
+ } finally {
+ data.seek(0);
+ }
+
baos.close();
- byte[] bytecode = baos.toByteArray();
- return singleClassLoader.fromBytes(className,bytecode);
+ return baos.toByteArray();
}
private static class SingleClassLoader extends ClassLoader {
System.err.println("Usage: RuntimeCompiler mipsbinary");
System.exit(1);
}
- UnixRuntime r = (UnixRuntime) compile(new Seekable.File(args[0])).newInstance();
+ UnixRuntime r = (UnixRuntime) compile(new Seekable.File(args[0]),"unixruntime").newInstance();
System.err.println("Instansiated: "+ r);
System.exit(UnixRuntime.runAndExec(r,args));
}