001/*
002 * Copyright (c) 2014, 2014, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.compiler.gen;
024
025import jdk.internal.jvmci.code.*;
026import jdk.internal.jvmci.meta.*;
027
028import com.oracle.graal.lir.gen.*;
029
030public abstract class BytecodeLIRBuilder {
031    protected final LIRGeneratorTool gen;
032    protected final BytecodeParserTool parser;
033
034    public BytecodeLIRBuilder(LIRGeneratorTool gen, BytecodeParserTool parser) {
035        this.gen = gen;
036        this.parser = parser;
037    }
038
039    public void emitPrologue(ResolvedJavaMethod method) {
040        CallingConvention incomingArguments = gen.getCallingConvention();
041
042        Value[] params = new Value[incomingArguments.getArgumentCount()];
043        for (int i = 0; i < params.length; i++) {
044            params[i] = LIRGenerator.toStackKind(incomingArguments.getArgument(i));
045            if (ValueUtil.isStackSlot(params[i])) {
046                StackSlot slot = ValueUtil.asStackSlot(params[i]);
047                if (slot.isInCallerFrame() && !gen.getResult().getLIR().hasArgInCallerFrame()) {
048                    gen.getResult().getLIR().setHasArgInCallerFrame();
049                }
050            }
051        }
052
053        gen.emitIncomingValues(params);
054
055        Signature sig = method.getSignature();
056        boolean isStatic = method.isStatic();
057        for (int i = 0; i < sig.getParameterCount(!isStatic); i++) {
058            Value paramValue = params[i];
059            assert paramValue.getKind() == sig.getParameterKind(i).getStackKind();
060            parser.storeLocal(i, gen.emitMove(paramValue));
061        }
062
063    }
064
065    public abstract int getArrayLengthOffset();
066
067    public abstract JavaConstant getClassConstant(ResolvedJavaType declaringClass);
068
069    public abstract int getFieldOffset(ResolvedJavaField field);
070
071}