1 /*
   2  * Copyright (c) 2013, 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.amd64;
  26 
  27 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.ILLEGAL;
  28 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG;
  29 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.STACK;
  30 
  31 import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler;
  32 import org.graalvm.compiler.lir.LIRInstructionClass;
  33 import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
  34 
  35 import jdk.vm.ci.code.Register;
  36 import jdk.vm.ci.code.ValueUtil;
  37 import jdk.vm.ci.meta.Value;
  38 
  39 public final class AMD64CCall extends AMD64LIRInstruction {
  40     public static final LIRInstructionClass<AMD64CCall> TYPE = LIRInstructionClass.create(AMD64CCall.class);
  41 
  42     @Def({REG, ILLEGAL}) protected Value result;
  43     @Use({REG, STACK}) protected Value[] parameters;
  44     @Use({REG}) protected Value functionPtr;
  45     @Use({REG}) protected Value numberOfFloatingPointArguments;
  46 
  47     public AMD64CCall(Value result, Value functionPtr, Value numberOfFloatingPointArguments, Value[] parameters) {
  48         super(TYPE);
  49         this.result = result;
  50         this.functionPtr = functionPtr;
  51         this.parameters = parameters;
  52         this.numberOfFloatingPointArguments = numberOfFloatingPointArguments;
  53     }
  54 
  55     @Override
  56     public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) {
  57         directCall(masm);
  58     }
  59 
  60     private void directCall(AMD64MacroAssembler masm) {
  61         Register reg = ValueUtil.asRegister(functionPtr);
  62         masm.call(reg);
  63         masm.nop(8);
  64     }
  65 
  66     @Override
  67     public boolean destroysCallerSavedRegisters() {
  68         return true;
  69     }
  70 
  71 }