1 /*
   2  * Copyright (c) 2002, 2003, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores,
  20  * CA 94065 USA or visit www.oracle.com if you need additional information or
  21  * have any questions.
  22  *
  23  */
  24 
  25 package sun.jvm.hotspot.asm.x86;
  26 
  27 import sun.jvm.hotspot.asm.*;
  28 
  29 public class X86BranchInstruction extends X86Instruction
  30                                         implements BranchInstruction {
  31    final private X86PCRelativeAddress addr;
  32 
  33    public X86BranchInstruction(String name, X86PCRelativeAddress addr, int size, int prefixes) {
  34       super(name, size, prefixes);
  35       this.addr = addr;
  36       if(addr instanceof X86PCRelativeAddress) {
  37          addr.setInstructionSize(getSize());
  38       }
  39    }
  40 
  41    public String asString(long currentPc, SymbolFinder symFinder) {
  42       StringBuffer buf = new StringBuffer();
  43       buf.append(getPrefixString());
  44       buf.append(getName());
  45       if(addr != null) {
  46          buf.append(spaces);
  47          if(addr instanceof X86PCRelativeAddress) {
  48             long disp = ((X86PCRelativeAddress)addr).getDisplacement();
  49             long address = disp + currentPc;
  50             buf.append(symFinder.getSymbolFor(address));
  51          }
  52       }
  53       return buf.toString();
  54    }
  55 
  56    public Address getBranchDestination() {
  57       return addr;
  58    }
  59 
  60    public boolean isBranch() {
  61       return true;
  62    }
  63 
  64    public boolean isConditional() {
  65       return false;
  66    }
  67 
  68 }