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 }