--- /dev/null 2017-01-22 10:16:57.869617664 -0800 +++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.asm.sparc/src/org/graalvm/compiler/asm/sparc/SPARCAddress.java 2017-02-15 16:56:38.092460321 -0800 @@ -0,0 +1,126 @@ +/* + * Copyright (c) 2013, 2015, 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 org.graalvm.compiler.asm.sparc; + +import static jdk.vm.ci.sparc.SPARC.STACK_BIAS; +import static jdk.vm.ci.sparc.SPARC.fp; +import static jdk.vm.ci.sparc.SPARC.sp; +import jdk.vm.ci.code.Register; +import jdk.vm.ci.sparc.SPARC; + +import org.graalvm.compiler.asm.AbstractAddress; + +public class SPARCAddress extends AbstractAddress { + + private final Register base; + private final Register index; + private final int displacement; + + /** + * Creates an {@link SPARCAddress} with given base register, no scaling and a given + * displacement. + * + * @param base the base register + * @param displacement the displacement + */ + public SPARCAddress(Register base, int displacement) { + this.base = base; + this.index = Register.None; + this.displacement = displacement; + } + + /** + * Creates an {@link SPARCAddress} with given base register, no scaling and a given index. + * + * @param base the base register + * @param index the index register + */ + public SPARCAddress(Register base, Register index) { + this.base = base; + this.index = index; + this.displacement = 0; + } + + @Override + public String toString() { + StringBuilder s = new StringBuilder(); + s.append("["); + String sep = ""; + if (!getBase().equals(Register.None)) { + s.append(getBase()); + sep = " + "; + } + if (!getIndex().equals(Register.None)) { + s.append(sep).append(getIndex()); + sep = " + "; + } else { + if (getDisplacement() < 0) { + s.append(" - ").append(-getDisplacement()); + } else if (getDisplacement() > 0) { + s.append(sep).append(getDisplacement()); + } + } + s.append("]"); + return s.toString(); + } + + /** + * @return Base register that defines the start of the address computation. If not present, is + * denoted by {@link Register#None}. + */ + public Register getBase() { + return base; + } + + /** + * @return Index register, the value of which is added to {@link #getBase}. If not present, is + * denoted by {@link Register#None}. + */ + public Register getIndex() { + return index; + } + + /** + * @return true if this address has an index register + */ + public boolean hasIndex() { + return !getIndex().equals(Register.None); + } + + /** + * This method adds the stack-bias to the displacement if the base register is either + * {@link SPARC#sp} or {@link SPARC#fp}. + * + * @return Optional additive displacement. + */ + public int getDisplacement() { + if (hasIndex()) { + throw new InternalError("address has index register"); + } + // TODO Should we also hide the register save area size here? + if (getBase().equals(sp) || getBase().equals(fp)) { + return displacement + STACK_BIAS; + } + return displacement; + } +}