Mercurial > hg > truffle
view graal/com.oracle.max.asmdis/src/com/sun/max/asm/gen/risc/field/OperandField.java @ 3733:e233f5660da4
Added Java files from Maxine project.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 17 Dec 2011 19:59:18 +0100 |
parents | |
children | bc8527f3071c |
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/* * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.sun.max.asm.gen.risc.field; import java.util.*; import com.sun.max.*; import com.sun.max.asm.*; import com.sun.max.asm.gen.*; import com.sun.max.asm.gen.risc.*; import com.sun.max.asm.gen.risc.bitRange.*; /** * An operand field defines an instruction field whose value is given as a parameter in the generated * assembler method. The field is also a parameter in the external assembler syntax unless * it's {@link #type value type} implements {@link ExternalMnemonicSuffixArgument} in which * case, the field's value is represented as a suffix of the mnemonic in the external assembler syntax. */ public abstract class OperandField<Argument_Type extends Argument> extends RiscField implements Parameter, Expression { private SignDependentOperations signDependentOperations; protected OperandField(BitRange bitRange) { super(bitRange); signDependentOperations = SignDependentOperations.UNSIGNED; } public RiscConstant constant(int value) { return new RiscConstant(new ConstantField(name(), bitRange()), value); } protected SignDependentOperations signDependentOperations() { return signDependentOperations; } protected void setSignDependentOperations(SignDependentOperations signDependentOperations) { this.signDependentOperations = signDependentOperations; } public int maxArgumentValue() { return signDependentOperations.maxArgumentValue(bitRange()); } public int minArgumentValue() { return signDependentOperations.minArgumentValue(bitRange()); } public int assemble(int value) throws AssemblyException { return signDependentOperations.assemble(value, bitRange()); } public int extract(int instruction) { return signDependentOperations.extract(instruction, bitRange()); } public abstract Argument_Type disassemble(int instruction); /** * @return the minimal difference between any two potential operands */ public int grain() { return 1 << zeroes(); } /** * @return implied zeroes to be "appended" to respective operands */ public int zeroes() { return 0; } @Override public OperandField<Argument_Type> clone() { final Class<OperandField<Argument_Type>> type = null; return Utils.cast(type, super.clone()); } public OperandField<Argument_Type> beSigned() { final OperandField<Argument_Type> result = clone(); result.setSignDependentOperations(SignDependentOperations.SIGNED); return result; } public OperandField<Argument_Type> beSignedOrUnsigned() { final OperandField<Argument_Type> result = clone(); result.setSignDependentOperations(SignDependentOperations.SIGNED_OR_UNSIGNED); return result; } public boolean isSigned() { return signDependentOperations == SignDependentOperations.SIGNED; } public abstract Class type(); private String variableName; public String variableName() { if (variableName != null) { return variableName; } return name(); } public Argument getExampleArgument() { final Iterator<? extends Argument> it = getLegalTestArguments().iterator(); if (it.hasNext()) { return it.next(); } return null; } public OperandField<Argument_Type> setVariableName(String name) { variableName = name; return this; } public String externalName() { return variableName(); } private Set<Argument> excludedDisassemblerTestArguments = Collections.emptySet(); public OperandField<Argument_Type> withExcludedDisassemblerTestArguments(Set<Argument> arguments) { final OperandField<Argument_Type> result = clone(); result.excludedDisassemblerTestArguments = arguments; return result; } public OperandField<Argument_Type> withExcludedDisassemblerTestArguments(Argument... arguments) { return withExcludedDisassemblerTestArguments(new HashSet<Argument>(Arrays.asList(arguments))); } public Set<Argument> excludedDisassemblerTestArguments() { return excludedDisassemblerTestArguments; } private Set<Argument> excludedExternalTestArguments = Collections.emptySet(); public OperandField<Argument_Type> withExcludedExternalTestArguments(Set<Argument> arguments) { final OperandField<Argument_Type> result = clone(); result.excludedExternalTestArguments = arguments; return result; } public OperandField<Argument_Type> withExcludedExternalTestArguments(Argument... arguments) { return withExcludedExternalTestArguments(new HashSet<Argument>(Arrays.asList(arguments))); } public Set<Argument> excludedExternalTestArguments() { return excludedExternalTestArguments; } public int compareTo(Parameter other) { return type().getName().compareTo(other.type().getName()); } public long evaluate(Template template, List<Argument> arguments) { if (boundTo() != null) { return boundTo().evaluate(template, arguments); } return template.bindingFor(this, arguments).asLong(); } private Expression expression; public OperandField<Argument_Type> bindTo(Expression expr) { final OperandField<Argument_Type> result = clone(); result.expression = expr; return result; } public Expression boundTo() { return expression; } }