1 /*
   2  * Copyright (c) 2011, 2015, 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 package org.graalvm.compiler.lir.sparc;
  24 
  25 import org.graalvm.compiler.asm.NumUtil;
  26 import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler;
  27 import org.graalvm.compiler.lir.LIRInstruction;
  28 import org.graalvm.compiler.lir.LIRInstructionClass;
  29 import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
  30 
  31 import jdk.vm.ci.meta.JavaConstant;
  32 
  33 /**
  34  * Convenience class to provide SPARCMacroAssembler for the {@link #emitCode} method.
  35  */
  36 public abstract class SPARCLIRInstruction extends LIRInstruction implements SPARCLIRInstructionMixin {
  37     public static final LIRInstructionClass<SPARCLIRInstruction> TYPE = LIRInstructionClass.create(SPARCLIRInstruction.class);
  38     private final SPARCLIRInstructionMixinStore store;
  39 
  40     protected SPARCLIRInstruction(LIRInstructionClass<? extends LIRInstruction> c) {
  41         this(c, null);
  42     }
  43 
  44     protected SPARCLIRInstruction(LIRInstructionClass<? extends LIRInstruction> c, SizeEstimate size) {
  45         super(c);
  46         store = new SPARCLIRInstructionMixinStore(size);
  47     }
  48 
  49     @Override
  50     public void emitCode(CompilationResultBuilder crb) {
  51         emitCode(crb, (SPARCMacroAssembler) crb.asm);
  52     }
  53 
  54     protected abstract void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm);
  55 
  56     @Override
  57     public SPARCLIRInstructionMixinStore getSPARCLIRInstructionStore() {
  58         return store;
  59     }
  60 
  61     protected static int asImmediate(JavaConstant value) {
  62         if (value.isNull()) {
  63             return 0;
  64         } else {
  65             long val = value.asLong();
  66             assert NumUtil.isInt(val);
  67             return (int) val;
  68         }
  69     }
  70 }