Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64TailcallOp.java @ 6495:75f130f2b30f
moved AMD64 specific HotSpot code in com.oracle.graal.hotspot.amd64 project
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 03 Oct 2012 01:18:03 +0200 |
parents | graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/target/amd64/AMD64TailcallOp.java@85c1b84f8fd9 |
children | 4afe23aa0a00 |
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/* * 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.amd64; import static com.oracle.graal.api.code.ValueUtil.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.lir.LIRInstruction.Opcode; import com.oracle.graal.lir.amd64.*; import com.oracle.graal.lir.asm.*; import com.oracle.max.asm.amd64.*; /** * Performs a hard-coded tail call to the specified target, which normally should be an {@link InstalledCode} instance. */ @Opcode("TAILCALL") public class AMD64TailcallOp extends AMD64LIRInstruction { @Use protected Value target; @Alive protected Value[] parameters; public AMD64TailcallOp(Value[] parameters, Value target) { this.target = target; this.parameters = parameters; } @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(target)); masm.ensureUniquePC(); } }