1 /*
   2  * Copyright (c) 2012, 2020, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 
  25 package org.graalvm.compiler.hotspot.sparc;
  26 
  27 import static org.graalvm.compiler.hotspot.HotSpotHostBackend.DEOPT_BLOB_UNCOMMON_TRAP;
  28 
  29 import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler;
  30 import org.graalvm.compiler.core.common.LIRKind;
  31 import org.graalvm.compiler.lir.LIRFrameState;
  32 import org.graalvm.compiler.lir.LIRInstructionClass;
  33 import org.graalvm.compiler.lir.Opcode;
  34 import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
  35 import org.graalvm.compiler.lir.sparc.SPARCBlockEndOp;
  36 import org.graalvm.compiler.lir.sparc.SPARCCall;
  37 
  38 import jdk.vm.ci.meta.AllocatableValue;
  39 import jdk.vm.ci.meta.PlatformKind;
  40 import jdk.vm.ci.sparc.SPARC;
  41 
  42 @Opcode("DEOPT")
  43 final class SPARCDeoptimizeOp extends SPARCBlockEndOp {
  44     public static final LIRInstructionClass<SPARCDeoptimizeOp> TYPE = LIRInstructionClass.create(SPARCDeoptimizeOp.class);
  45     public static final SizeEstimate SIZE = SizeEstimate.create(1);
  46     @Temp AllocatableValue pcRegister;
  47     @State private LIRFrameState info;
  48 
  49     SPARCDeoptimizeOp(LIRFrameState info, PlatformKind wordKind) {
  50         super(TYPE, SIZE);
  51         this.info = info;
  52         pcRegister = SPARC.o7.asValue(LIRKind.value(wordKind));
  53     }
  54 
  55     @Override
  56     public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
  57         // TODO the patched call address looks odd (and is invalid) compared to other runtime calls:
  58         // 0xffffffff749bb5fc: call 0xffffffff415a720c ; {runtime_call}
  59         // [Exception Handler]
  60         // 0xffffffff749bb604: call 0xffffffff749bb220 ; {runtime_call}
  61         // 0xffffffff749bb608: nop
  62         // [Deopt Handler Code]
  63         // 0xffffffff749bb60c: call 0xffffffff748da540 ; {runtime_call}
  64         // 0xffffffff749bb610: nop
  65         SPARCCall.directCall(crb, masm, crb.foreignCalls.lookupForeignCall(DEOPT_BLOB_UNCOMMON_TRAP), null, info);
  66     }
  67 }