/*
 * 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.graal.hotspot.sparc;

import com.oracle.graal.api.code.*;
import com.oracle.graal.api.meta.*;
import com.oracle.graal.asm.AbstractAssembler;
import com.oracle.graal.asm.sparc.SPARCAssembler;
import com.oracle.graal.compiler.gen.LIRGenerator;
import com.oracle.graal.compiler.sparc.SPARCLIRGenerator;
import com.oracle.graal.hotspot.*;
import com.oracle.graal.hotspot.meta.*;
import com.oracle.graal.hotspot.stubs.Stub;
import com.oracle.graal.lir.*;
import com.oracle.graal.lir.asm.*;
import com.oracle.graal.nodes.*;
import static com.oracle.graal.phases.GraalOptions.*;

/**
 * HotSpot SPARC specific backend.
 */
public class SPARCHotSpotBackend extends HotSpotBackend {

    public SPARCHotSpotBackend(HotSpotRuntime runtime, TargetDescription target) {
        super(runtime, target);
    }

    @Override
    public LIRGenerator newLIRGenerator(StructuredGraph graph, FrameMap frameMap, CallingConvention cc, LIR lir) {
        return new SPARCLIRGenerator(graph, this.runtime(), this.target, frameMap, cc, lir);
    }

    @Override
    protected AbstractAssembler createAssembler(FrameMap frameMap) {
        return new SPARCAssembler(target, frameMap.registerConfig);
    }

    class HotSpotFrameContext implements FrameContext {

        final boolean isStub;

        HotSpotFrameContext(boolean isStub) {
            this.isStub = isStub;
        }

        @Override
        public void enter(TargetMethodAssembler tasm) {
        }

        @Override
        public void leave(TargetMethodAssembler tasm) {
        }
    }

    @Override
    public TargetMethodAssembler newAssembler(LIRGenerator lirGen, CompilationResult compilationResult) {
        SPARCHotSpotLIRGenerator gen = (SPARCHotSpotLIRGenerator) lirGen;
        FrameMap frameMap = gen.frameMap;
        LIR lir = gen.lir;
        boolean omitFrame = CanOmitFrame.getValue() && !frameMap.frameNeedsAllocating() && !lir.hasArgInCallerFrame();

        Stub stub = gen.getStub();
        AbstractAssembler masm = createAssembler(frameMap);
        HotSpotFrameContext frameContext = omitFrame ? null : new HotSpotFrameContext(stub != null);
        TargetMethodAssembler tasm = new TargetMethodAssembler(target, runtime(), frameMap, masm, frameContext, compilationResult);
        tasm.setFrameSize(frameMap.frameSize());
        StackSlot deoptimizationRescueSlot = gen.deoptimizationRescueSlot;
        if (deoptimizationRescueSlot != null && stub == null) {
            tasm.compilationResult.setCustomStackAreaOffset(frameMap.offsetForStackSlot(deoptimizationRescueSlot));
        }

        return tasm;
    }

    @Override
    public void emitCode(TargetMethodAssembler tasm, LIRGenerator lirGen, ResolvedJavaMethod codeCacheOwner) {
        // SPARC: Emit code
    }
}