Mercurial > hg > graal-compiler
view graal/com.oracle.max.graal.hotspot/src/com/oracle/graal/hotspot/target/amd64/AMD64TailcallOp.java @ 5060:4ed4295ce15f
Update import statements.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
---|---|
date | Thu, 08 Mar 2012 19:11:12 +0100 |
parents | ed559a528128 |
children |
line wrap: on
line source
/* * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.graal.hotspot.target.amd64; import static com.oracle.max.cri.ci.CiValueUtil.*; import java.util.*; import com.oracle.max.asm.target.amd64.*; import com.oracle.max.cri.ci.*; import com.oracle.graal.graph.*; import com.oracle.graal.lir.*; import com.oracle.graal.lir.amd64.*; import com.oracle.graal.lir.asm.*; /** * Performs a hard-coded tail call to the specified target, which normally should be an RiCompiledCode instance. */ public class AMD64TailcallOp extends AMD64LIRInstruction { public AMD64TailcallOp(List<CiValue> parameters, CiValue target, CiValue[] callingConvention) { super("TAILCALL", LIRInstruction.NO_OPERANDS, null, toArray(parameters, target), LIRInstruction.NO_OPERANDS, callingConvention.clone()); assert inputs.length == temps.length + 1; for (int i = 0; i < temps.length; i++) { assert isRegister(temps[i]) : "too many parameters for tail call"; assert sameRegister(temps[i], inputs[i]) : "inputs do not match calling convention"; } } private static CiValue[] toArray(List<CiValue> parameters, CiValue target) { CiValue[] result = new CiValue[parameters.size() + 1]; parameters.toArray(result); result[parameters.size()] = target; return result; } @Override public void emitCode(TargetMethodAssembler tasm, AMD64MacroAssembler masm) { // destroy the current frame (now the return address is the top of stack) masm.leave(); // jump to the target method masm.jmp(asRegister(inputs[inputs.length - 1])); masm.ensureUniquePC(); } @Override protected EnumSet<OperandFlag> flagsFor(OperandMode mode, int index) { if (mode == OperandMode.Input) { return EnumSet.of(OperandFlag.Register); } else if (mode == OperandMode.Temp) { return EnumSet.of(OperandFlag.Register); } throw GraalInternalError.shouldNotReachHere(); } }