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1 /*
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2 * Copyright 2002 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any 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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