001/*
002 * Copyright (c) 2013, 2015, 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.hotspot.sparc;
024
025import jdk.internal.jvmci.code.*;
026import jdk.internal.jvmci.meta.*;
027import static com.oracle.graal.lir.LIRInstruction.OperandFlag.*;
028import static jdk.internal.jvmci.code.ValueUtil.*;
029import static jdk.internal.jvmci.sparc.SPARC.*;
030
031import com.oracle.graal.asm.sparc.*;
032import com.oracle.graal.lir.*;
033import com.oracle.graal.lir.asm.*;
034import com.oracle.graal.lir.sparc.*;
035
036/**
037 * Pushes an interpreter frame to the stack.
038 */
039@Opcode("PUSH_INTERPRETER_FRAME")
040final class SPARCHotSpotPushInterpreterFrameOp extends SPARCLIRInstruction {
041    public static final LIRInstructionClass<SPARCHotSpotPushInterpreterFrameOp> TYPE = LIRInstructionClass.create(SPARCHotSpotPushInterpreterFrameOp.class);
042
043    @Alive(REG) AllocatableValue frameSize;
044    @Alive(REG) AllocatableValue framePc;
045    @Alive(REG) AllocatableValue senderSp;
046    @Alive(REG) AllocatableValue initialInfo;
047
048    SPARCHotSpotPushInterpreterFrameOp(AllocatableValue frameSize, AllocatableValue framePc, AllocatableValue senderSp, AllocatableValue initialInfo) {
049        super(TYPE);
050        this.frameSize = frameSize;
051        this.framePc = framePc;
052        this.senderSp = senderSp;
053        this.initialInfo = initialInfo;
054    }
055
056    @Override
057    public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
058        final Register frameSizeRegister = asRegister(frameSize);
059        final Register framePcRegister = asRegister(framePc);
060        final Register senderSpRegister = asRegister(senderSp);
061
062        // Save sender SP to O5_savedSP.
063        masm.mov(senderSpRegister, o5);
064
065        masm.neg(frameSizeRegister);
066        masm.save(sp, frameSizeRegister, sp);
067
068        masm.mov(i0, o0);
069        masm.mov(i1, o1);
070        masm.mov(i2, o2);
071        masm.mov(i3, o3);
072        masm.mov(i4, o4);
073
074        // NOTE: Don't touch I5 as it contains valuable saved SP!
075
076        // Move frame's new PC into i7
077        masm.mov(framePcRegister, i7);
078    }
079
080    @Override
081    public boolean leavesRegisterWindow() {
082        return true;
083    }
084}