001/*
002 * Copyright (c) 2012, 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 static com.oracle.graal.hotspot.HotSpotHostBackend.*;
026import jdk.internal.jvmci.meta.*;
027import jdk.internal.jvmci.sparc.*;
028
029import com.oracle.graal.asm.sparc.*;
030import com.oracle.graal.lir.*;
031import com.oracle.graal.lir.asm.*;
032import com.oracle.graal.lir.sparc.*;
033
034@Opcode("DEOPT")
035final class SPARCDeoptimizeOp extends SPARCBlockEndOp {
036    public static final LIRInstructionClass<SPARCDeoptimizeOp> TYPE = LIRInstructionClass.create(SPARCDeoptimizeOp.class);
037    public static final SizeEstimate SIZE = SizeEstimate.create(1);
038    @Temp AllocatableValue pcRegister;
039    @State private LIRFrameState info;
040
041    SPARCDeoptimizeOp(LIRFrameState info, PlatformKind wordKind) {
042        super(TYPE, SIZE);
043        this.info = info;
044        pcRegister = SPARC.o7.asValue(LIRKind.value(wordKind));
045    }
046
047    @Override
048    public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
049        // TODO the patched call address looks odd (and is invalid) compared to other runtime calls:
050        // 0xffffffff749bb5fc: call 0xffffffff415a720c ; {runtime_call}
051        // [Exception Handler]
052        // 0xffffffff749bb604: call 0xffffffff749bb220 ; {runtime_call}
053        // 0xffffffff749bb608: nop
054        // [Deopt Handler Code]
055        // 0xffffffff749bb60c: call 0xffffffff748da540 ; {runtime_call}
056        // 0xffffffff749bb610: nop
057        SPARCCall.directCall(crb, masm, crb.foreignCalls.lookupForeignCall(UNCOMMON_TRAP_HANDLER), null, info);
058    }
059}