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 2aa4305..fabc21b 100644 (file)
--- a/src/org/ibex/nestedvm/RuntimeCompiler.java
+++ b/src/org/ibex/nestedvm/RuntimeCompiler.java
@@ -1,32 +1,53 @@
+// 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
-public class RuntimeCompiler {          
-    private static final 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++); }
+// This need a lot of work to support binaries spanned across many classes
+public class RuntimeCompiler {  
+    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");
-        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 {
         public Class loadClass(String name, boolean resolve) throws ClassNotFoundException {
-                   System.err.println(this + ": loadClass(\"" + name + "," + resolve + ");");
+            //System.err.println(this + ": loadClass(\"" + name + "," + resolve + ");");
             return super.loadClass(name,resolve);
         }
         public Class fromBytes(String name, byte[] b) { return fromBytes(name,b,0,b.length); }
@@ -38,13 +59,13 @@ public class RuntimeCompiler {
     }
     
     public static void main(String[] args) throws Exception {
-           if(args.length == 0) {
-                   System.err.println("Usage: RuntimeCompiler mipsbinary");
+        if(args.length == 0) {
+            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(r.run(args));
+        System.exit(UnixRuntime.runAndExec(r,args));
     }
     
     private RuntimeCompiler() { }