Mercurial > hg > graal-jvmci-8
view graal/com.oracle.jvmci.asm.sparc/src/com/oracle/jvmci/asm/sparc/SPARCAddress.java @ 21711:1c41d00e6b2f
moved com.oracle.graal.bytecode to JVMCI namespace (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 03 Jun 2015 21:42:01 +0200 |
parents | 6df25b1418be |
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/* * Copyright (c) 2013, 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.oracle.jvmci.asm.sparc; import static com.oracle.jvmci.sparc.SPARC.*; import com.oracle.jvmci.code.*; import com.oracle.jvmci.sparc.*; 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; } }