1 /* |
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2 * Copyright (c) 2002, 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.sparc; |
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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 SPARCLoadInstruction extends SPARCMemoryInstruction |
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30 implements LoadInstruction { |
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31 final protected SPARCRegister register2; // used for double word load instructions |
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32 final protected Register[] loadDestinations; |
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33 |
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34 public SPARCLoadInstruction(String name, int opcode, SPARCRegisterIndirectAddress address, SPARCRegister register, int dataType) { |
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35 super(name, opcode,address, register, dataType); |
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36 if (opcode == LDD || opcode == LDDA) { |
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37 int nextRegNum = (register.getNumber() + 1) % SPARCRegisters.NUM_REGISTERS; |
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38 register2 = SPARCRegisters.getRegister(nextRegNum); |
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39 loadDestinations = new Register[2]; |
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40 loadDestinations[0] = register; |
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41 loadDestinations[1] = register2; |
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42 } else { |
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43 register2 = null; |
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44 loadDestinations = new Register[1]; |
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45 loadDestinations[0] = register; |
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46 } |
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47 } |
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48 |
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49 protected String getDescription() { |
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50 StringBuffer buf = new StringBuffer(); |
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51 buf.append(getName()); |
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52 buf.append(spaces); |
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53 buf.append(address.toString()); |
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54 buf.append(comma); |
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55 buf.append(register.toString()); |
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56 return buf.toString(); |
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57 } |
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58 |
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59 public Register[] getLoadDestinations() { |
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60 return loadDestinations; |
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61 } |
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62 |
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63 public Address getLoadSource() { |
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64 return address; |
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65 } |
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66 |
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67 public boolean isLoad() { |
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68 return true; |
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69 } |
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70 } |
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