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