clarify licensing

[nestedvm.git] / src / org / ibex / nestedvm / RuntimeCompiler.java

diff --git a/src/org/ibex/nestedvm/RuntimeCompiler.java b/src/org/ibex/nestedvm/RuntimeCompiler.java
index 1a1a047..fabc21b 100644 (file)
--- a/src/org/ibex/nestedvm/RuntimeCompiler.java
+++ b/src/org/ibex/nestedvm/RuntimeCompiler.java
@@ -1,28 +1,48 @@
+// Copyright 2000-2005 the Contributors, as shown in the revision logs.
+// Licensed under the Apache License 2.0 ("the License").
+// You may not use this file except in compliance with the License.
+
 package org.ibex.nestedvm;
 
 import java.io.*;
 
 import org.ibex.nestedvm.util.*;
 
-// FEATURE: This need a lot of work to support binaries spanned across many classes
+// 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++); }
+    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 { return compile(data,extraoptions,null); }
     
-    public static Class compile(Seekable data) throws IOException, Compiler.Exn {
-        String className = "nextedvm.runtimecompiled_" + uniqueID();
-        System.err.println("RuntimeCompiler: Building " + className);
+    public static Class compile(Seekable data, String extraoptions, String sourceName) throws IOException, Compiler.Exn {
+        String className = "nestedvm.runtimecompiled";
+        byte[] bytecode;
+        try {
+            bytecode = runCompiler(data,className,extraoptions,sourceName,null);
+        } catch(Compiler.Exn e) {
+            if(e.getMessage() != null || e.getMessage().indexOf("constant pool full")  != -1)
+                bytecode = runCompiler(data,className,extraoptions,sourceName,"lessconstants");
+            else
+                throw e;
+        }
+        return new SingleClassLoader().fromBytes(className,bytecode);
+    }
+    
+    private static byte[] runCompiler(Seekable data, String name, String options, String sourceName, 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");
+            c.setSource(sourceName);
+            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 {
@@ -43,7 +63,7 @@ public class RuntimeCompiler {
             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));
     }