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annotate graal/com.oracle.max.asmdis/src/com/sun/max/asm/gen/risc/RiscInstructionDescription.java @ 4138:82af018d61db

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Merge fixes.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sat, 17 Dec 2011 22:03:44 +0100
parents e233f5660da4
children
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1 /*
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2 * Copyright (c) 2007, 2011, 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 package com.sun.max.asm.gen.risc;
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24
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25 import java.util.*;
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26
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27 import com.sun.max.asm.gen.*;
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28 import com.sun.max.asm.gen.risc.field.*;
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29 import com.sun.max.program.*;
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30
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31 /**
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32 */
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33 public final class RiscInstructionDescription extends InstructionDescription {
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34
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35 public RiscInstructionDescription(List<Object> specifications) {
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36 super(specifications);
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37
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38 int bits = 0;
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39 int mask = 0;
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40 for (Object specification : specifications) {
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41 final RiscField field;
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42 if (specification instanceof RiscField) {
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43 field = (RiscField) specification;
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44 if (field instanceof InputOperandField) {
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45 // Cannot recover the value of these fields from an assembled instruction
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46 // with support for a simultaneous equation solver
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47 beNotDisassemblable();
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48 }
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49 } else if (specification instanceof RiscConstant) {
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50 field = ((RiscConstant) specification).field();
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51 } else {
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52 continue;
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53 }
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54 bits += field.bitRange().encodedWidth();
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55 final int fieldMask = field.bitRange().instructionMask();
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56 if ((fieldMask & mask) != 0) {
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57 throw ProgramError.unexpected("RISC instruction field defines bits also defined by another field: " + field.name() + "[" + field.bitRange() + "]");
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58 }
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59 mask |= fieldMask;
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60 }
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61
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62 if (bits != 32) {
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63 throw ProgramError.unexpected("RISC instruction description describes " + bits + " instruction field bits: " + specifications);
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64 }
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65 }
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66
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67 private boolean synthetic;
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68
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69 public InstructionDescription beSynthetic() {
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70 synthetic = true;
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71 return this;
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72 }
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73
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74 @Override
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75 public boolean isSynthetic() {
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76 return synthetic;
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77 }
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78
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79 }