| /* |
| * 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 org.graalvm.compiler.hotspot.amd64; |
| |
| import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG; |
| import static jdk.vm.ci.amd64.AMD64.rax; |
| import static jdk.vm.ci.amd64.AMD64.rbp; |
| import static jdk.vm.ci.amd64.AMD64.rip; |
| import static jdk.vm.ci.code.ValueUtil.asRegister; |
| |
| import org.graalvm.compiler.asm.amd64.AMD64Address; |
| import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler; |
| import org.graalvm.compiler.hotspot.HotSpotBackend; |
| import org.graalvm.compiler.lir.LIRInstructionClass; |
| import org.graalvm.compiler.lir.Opcode; |
| import org.graalvm.compiler.lir.StandardOp.SaveRegistersOp; |
| import org.graalvm.compiler.lir.amd64.AMD64LIRInstruction; |
| import org.graalvm.compiler.lir.asm.CompilationResultBuilder; |
| import org.graalvm.compiler.lir.framemap.FrameMap; |
| |
| import jdk.vm.ci.code.Register; |
| import jdk.vm.ci.code.RegisterConfig; |
| import jdk.vm.ci.code.RegisterSaveLayout; |
| import jdk.vm.ci.meta.AllocatableValue; |
| import jdk.vm.ci.meta.JavaKind; |
| |
| /** |
| * 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(JavaKind.Long); |
| masm.movptr(new AMD64Address(stackPointerRegister, registerSaveLayout.registerToSlot(integerResultRegister) * stackSlotSize), integerResultRegister); |
| |
| Register floatResultRegister = registerConfig.getReturnRegister(JavaKind.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)); |
| } |
| } |