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view graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotEnterUnpackFramesStackFrameOp.java @ 20813:eb21f2944d7d
Process Graal oops in nmethod::do_unloading_parallel
author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
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date | Wed, 08 Apr 2015 15:33:13 +0200 |
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 static com.oracle.graal.amd64.AMD64.*; import static com.oracle.graal.api.code.ValueUtil.*; import static com.oracle.graal.lir.LIRInstruction.OperandFlag.*; 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 enters a stack frame which is tailored to call the C++ method * {@link HotSpotBackend#UNPACK_FRAMES Deoptimization::unpack_frames}. */ @Opcode("ENTER_UNPACK_FRAMES_STACK_FRAME") final class AMD64HotSpotEnterUnpackFramesStackFrameOp extends AMD64LIRInstruction { public static final LIRInstructionClass<AMD64HotSpotEnterUnpackFramesStackFrameOp> TYPE = LIRInstructionClass.create(AMD64HotSpotEnterUnpackFramesStackFrameOp.class); private final Register threadRegister; private final int threadLastJavaSpOffset; private final int threadLastJavaPcOffset; private final int threadLastJavaFpOffset; @Alive(REG) AllocatableValue framePc; @Alive(REG) AllocatableValue senderSp; @Alive(REG) AllocatableValue senderFp; private final SaveRegistersOp saveRegisterOp; AMD64HotSpotEnterUnpackFramesStackFrameOp(Register threadRegister, int threadLastJavaSpOffset, int threadLastJavaPcOffset, int threadLastJavaFpOffset, AllocatableValue framePc, AllocatableValue senderSp, AllocatableValue senderFp, SaveRegistersOp saveRegisterOp) { super(TYPE); this.threadRegister = threadRegister; this.threadLastJavaSpOffset = threadLastJavaSpOffset; this.threadLastJavaPcOffset = threadLastJavaPcOffset; this.threadLastJavaFpOffset = threadLastJavaFpOffset; this.framePc = framePc; this.senderSp = senderSp; this.senderFp = senderFp; 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(); final int totalFrameSize = frameMap.totalFrameSize(); // Push return address. masm.push(asRegister(framePc)); // Push base pointer. masm.push(asRegister(senderFp)); masm.movq(rbp, stackPointerRegister); /* * Allocate a full sized frame. Since return address and base pointer are already in place * (see above) we allocate two words less. */ masm.decrementq(stackPointerRegister, totalFrameSize - 2 * crb.target.wordSize); // Save return registers after moving the frame. final int stackSlotSize = frameMap.getTarget().wordSize; Register integerResultRegister = registerConfig.getReturnRegister(Kind.Long); masm.movptr(new AMD64Address(stackPointerRegister, registerSaveLayout.registerToSlot(integerResultRegister) * stackSlotSize), integerResultRegister); Register floatResultRegister = registerConfig.getReturnRegister(Kind.Double); masm.movdbl(new AMD64Address(stackPointerRegister, registerSaveLayout.registerToSlot(floatResultRegister) * stackSlotSize), floatResultRegister); // Set up last Java values. masm.movq(new AMD64Address(threadRegister, threadLastJavaSpOffset), stackPointerRegister); /* * Save the PC since it cannot easily be retrieved using the last Java SP after we aligned * SP. Don't need the precise return PC here, just precise enough to point into this code * blob. */ masm.leaq(rax, new AMD64Address(rip, 0)); masm.movq(new AMD64Address(threadRegister, threadLastJavaPcOffset), rax); // Use BP because the frames look interpreted now. masm.movq(new AMD64Address(threadRegister, threadLastJavaFpOffset), rbp); // Align the stack for the following unpackFrames call. masm.andq(stackPointerRegister, -(crb.target.stackAlignment)); } }