Mercurial > hg > truffle
view graal/com.oracle.graal.lir.sparc/src/com/oracle/graal/lir/sparc/SPARCJumpOp.java @ 18408:2c3666f44855
Truffle: initial commit of object API implementation
author | Andreas Woess <andreas.woess@jku.at> |
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date | Tue, 18 Nov 2014 23:19:43 +0100 |
parents | 5a7b82c1514e |
children | 8fc336a04d77 413ac504d74e |
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/* * Copyright (c) 2013, 2014, 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.lir.sparc; import com.oracle.graal.asm.sparc.SPARCAssembler.Bpa; import com.oracle.graal.asm.sparc.*; import com.oracle.graal.asm.sparc.SPARCMacroAssembler.Nop; import com.oracle.graal.lir.*; import com.oracle.graal.lir.StandardOp.JumpOp; import com.oracle.graal.lir.asm.*; public class SPARCJumpOp extends JumpOp implements SPARCDelayedControlTransfer { private boolean emitDone = false; private int delaySlotPosition = -1; public SPARCJumpOp(LabelRef destination) { super(destination); } public void emitControlTransfer(CompilationResultBuilder crb, SPARCMacroAssembler masm) { assert !emitDone; if (!crb.isSuccessorEdge(destination())) { new Bpa(destination().label()).emit(masm); delaySlotPosition = masm.position(); } emitDone = true; } @Override public void emitCode(CompilationResultBuilder crb) { if (!crb.isSuccessorEdge(destination())) { if (!emitDone) { SPARCMacroAssembler masm = (SPARCMacroAssembler) crb.asm; new Bpa(destination().label()).emit(masm); new Nop().emit(masm); } else { assert crb.asm.position() - delaySlotPosition == 4; } } } public void resetState() { delaySlotPosition = -1; emitDone = false; } }