Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotLeaveDeoptimizedStackFrameOp.java @ 15104:ed29f7ff71eb
add DeoptimizationStub
author | twisti |
---|---|
date | Mon, 14 Apr 2014 17:21:49 -1000 |
parents | |
children | bb97b75d1d65 |
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/* * Copyright (c) 2013, 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 static com.oracle.graal.amd64.AMD64.*; import static com.oracle.graal.lir.LIRInstruction.OperandFlag.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.asm.amd64.*; import com.oracle.graal.lir.*; import com.oracle.graal.lir.asm.*; /** * Pops the current frame off the stack including the return address. */ @Opcode("LEAVE_DEOPTIMIZED_STACK_FRAME") final class AMD64HotSpotLeaveDeoptimizedStackFrameOp extends AMD64HotSpotEpilogueOp { @Use(REG) AllocatableValue frameSize; @Use(REG) AllocatableValue framePointer; public AMD64HotSpotLeaveDeoptimizedStackFrameOp(AllocatableValue frameSize, AllocatableValue initialInfo) { this.frameSize = frameSize; this.framePointer = initialInfo; } @Override public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) { masm.addq(rsp, asRegister(frameSize)); // Restore the frame pointer before stack bang because if a stack overflow is thrown it // needs to be pushed (and preserved). masm.movq(rbp, asRegister(framePointer)); } }