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view graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotLeaveUnpackFramesStackFrameOp.java @ 19829:79d5fbcc6978
Merge.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Fri, 13 Mar 2015 15:38:23 +0100 |
parents | 8fc336a04d77 |
children | 48c1ebd24120 |
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/* * Copyright (c) 2013, 2015, 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 com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.asm.amd64.*; import com.oracle.graal.hotspot.*; import com.oracle.graal.lir.*; import com.oracle.graal.lir.StandardOp.SaveRegistersOp; import com.oracle.graal.lir.amd64.*; import com.oracle.graal.lir.asm.*; import com.oracle.graal.lir.framemap.*; /** * Emits code that leaves a stack frame which is tailored to call the C++ method * {@link HotSpotBackend#UNPACK_FRAMES Deoptimization::unpack_frames}. */ @Opcode("LEAVE_UNPACK_FRAMES_STACK_FRAME") final class AMD64HotSpotLeaveUnpackFramesStackFrameOp extends AMD64LIRInstruction { public static final LIRInstructionClass<AMD64HotSpotLeaveUnpackFramesStackFrameOp> TYPE = LIRInstructionClass.create(AMD64HotSpotLeaveUnpackFramesStackFrameOp.class); private final Register threadRegister; private final int threadLastJavaSpOffset; private final int threadLastJavaPcOffset; private final int threadLastJavaFpOffset; private final SaveRegistersOp saveRegisterOp; AMD64HotSpotLeaveUnpackFramesStackFrameOp(Register threadRegister, int threadLastJavaSpOffset, int threadLastJavaPcOffset, int threadLastJavaFpOffset, SaveRegistersOp saveRegisterOp) { super(TYPE); this.threadRegister = threadRegister; this.threadLastJavaSpOffset = threadLastJavaSpOffset; this.threadLastJavaPcOffset = threadLastJavaPcOffset; this.threadLastJavaFpOffset = threadLastJavaFpOffset; this.saveRegisterOp = saveRegisterOp; } @Override public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) { FrameMap frameMap = crb.frameMap; RegisterConfig registerConfig = frameMap.getRegisterConfig(); RegisterSaveLayout registerSaveLayout = saveRegisterOp.getMap(frameMap); Register stackPointerRegister = registerConfig.getFrameRegister(); // Restore stack pointer. masm.movq(stackPointerRegister, new AMD64Address(threadRegister, threadLastJavaSpOffset)); // Clear last Java frame values. masm.movslq(new AMD64Address(threadRegister, threadLastJavaSpOffset), 0); masm.movslq(new AMD64Address(threadRegister, threadLastJavaPcOffset), 0); masm.movslq(new AMD64Address(threadRegister, threadLastJavaFpOffset), 0); // Restore return values. final int stackSlotSize = frameMap.getTarget().wordSize; Register integerResultRegister = registerConfig.getReturnRegister(Kind.Long); masm.movptr(integerResultRegister, new AMD64Address(stackPointerRegister, registerSaveLayout.registerToSlot(integerResultRegister) * stackSlotSize)); Register floatResultRegister = registerConfig.getReturnRegister(Kind.Double); masm.movdbl(floatResultRegister, new AMD64Address(stackPointerRegister, registerSaveLayout.registerToSlot(floatResultRegister) * stackSlotSize)); } }