1 /*
   2  * Copyright (c) 2011, 2018, 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.lir.sparc;
  26 
  27 import org.graalvm.compiler.core.common.NumUtil;
  28 import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler;
  29 import org.graalvm.compiler.lir.LIRInstruction;
  30 import org.graalvm.compiler.lir.LIRInstructionClass;
  31 import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
  32 
  33 import jdk.vm.ci.meta.JavaConstant;
  34 
  35 /**
  36  * Convenience class to provide SPARCMacroAssembler for the {@link #emitCode} method.
  37  */
  38 public abstract class SPARCLIRInstruction extends LIRInstruction implements SPARCLIRInstructionMixin {
  39     public static final LIRInstructionClass<SPARCLIRInstruction> TYPE = LIRInstructionClass.create(SPARCLIRInstruction.class);
  40     private final SPARCLIRInstructionMixinStore store;
  41 
  42     protected SPARCLIRInstruction(LIRInstructionClass<? extends LIRInstruction> c) {
  43         this(c, null);
  44     }
  45 
  46     protected SPARCLIRInstruction(LIRInstructionClass<? extends LIRInstruction> c, SizeEstimate size) {
  47         super(c);
  48         store = new SPARCLIRInstructionMixinStore(size);
  49     }
  50 
  51     @Override
  52     public void emitCode(CompilationResultBuilder crb) {
  53         emitCode(crb, (SPARCMacroAssembler) crb.asm);
  54     }
  55 
  56     protected abstract void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm);
  57 
  58     @Override
  59     public SPARCLIRInstructionMixinStore getSPARCLIRInstructionStore() {
  60         return store;
  61     }
  62 
  63     protected static int asImmediate(JavaConstant value) {
  64         if (value.isNull()) {
  65             return 0;
  66         } else {
  67             long val = value.asLong();
  68             assert NumUtil.isInt(val);
  69             return (int) val;
  70         }
  71     }
  72 }