1 cananian 1.1.2.1 // DataJavaMain.java, created Fri Oct 15 14:13:17 1999 by cananian
 2 cananian 1.1.2.1 // Copyright (C) 1999 C. Scott Ananian <cananian@alumni.princeton.edu>
 3 cananian 1.1.2.1 // Licensed under the terms of the GNU GPL; see COPYING for details.
 4 cananian 1.1.2.1 package harpoon.Backend.Runtime1;
 5 cananian 1.1.2.1 
 6 cananian 1.1.2.1 import harpoon.Backend.Generic.Frame;
 7 cananian 1.1.2.1 import harpoon.Backend.Maps.NameMap;
 8 cananian 1.1.2.1 import harpoon.ClassFile.HClass;
 9 cananian 1.1.2.1 import harpoon.ClassFile.HDataElement;
10 cananian 1.1.2.1 import harpoon.ClassFile.HMethod;
11 cananian 1.1.2.1 import harpoon.IR.Tree.Stm;
12 cananian 1.1.2.1 import harpoon.IR.Tree.TreeFactory;
13 cananian 1.1.2.2 import harpoon.IR.Tree.ALIGN;
14 cananian 1.1.2.1 import harpoon.IR.Tree.LABEL;
15 cananian 1.1.2.1 import harpoon.IR.Tree.SEGMENT;
16 cananian 1.1.2.1 import harpoon.Temp.Label;
17 cananian 1.1.2.1 
18 cananian 1.1.2.1 import java.util.ArrayList;
19 cananian 1.1.2.1 import java.util.List;
20 cananian 1.1.2.1 /**
21 cananian 1.1.2.4  * <code>DataJavaMain</code> outputs a labeled string pointer ("FNI_javamain")
22 cananian 1.1.2.4  * which tells the runtime with which method to begin execution of
23 cananian 1.1.2.1  * this java program.
24 cananian 1.1.2.1  * 
25 cananian 1.1.2.1  * @author  C. Scott Ananian <cananian@alumni.princeton.edu>
26 cananian 1.3      * @version $Id: DataJavaMain.java,v 1.3 2003/10/21 02:11:02 cananian Exp $
27 cananian 1.1.2.1  */
28 cananian 1.1.2.1 public class DataJavaMain extends Data {
29 cananian 1.1.2.1     final NameMap m_nm;
30 cananian 1.1.2.1     
31 cananian 1.1.2.1     /** Creates a <code>DataInitializers</code>. */
32 cananian 1.1.2.1     public DataJavaMain(Frame f, HClass hc, HMethod main) {
33 cananian 1.1.2.1         super("java-main", hc, f);
34 cananian 1.1.2.8         this.m_nm = f.getRuntime().getNameMap();
35 cananian 1.1.2.1         // only build one of these; wait until hc is java.lang.Object.
36 cananian 1.1.2.6         this.root = (hc==linker.forName("java.lang.Object")) ?
37 cananian 1.3                 build(main, f.pointersAreLong()) : null;
38 cananian 1.1.2.1     }
39 cananian 1.3         private HDataElement build(HMethod main, boolean pointersAreLong) {
40 cananian 1.1.2.2         List stmlist = new ArrayList(4);
41 cananian 1.1.2.1         stmlist.add(new SEGMENT(tf, null, SEGMENT.TEXT));
42 cananian 1.3             stmlist.add(new ALIGN(tf, null, pointersAreLong ? 8 : 4));// word align
43 cananian 1.1.2.7         stmlist.add(new LABEL(tf, null, new Label(m_nm.c_function_name
44 cananian 1.1.2.7                                                   ("FNI_javamain")), true));
45 cananian 1.1.2.5         stmlist.add(_DATUM(m_nm.label(main.getDeclaringClass(), "namestr")));
46 cananian 1.1.2.1         return (HDataElement) Stm.toStm(stmlist);
47 cananian 1.1.2.1     }
48 cananian 1.2     }