Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotLeaveCurrentStackFrameOp.java @ 21226:2f2fac20c446
LIRVerifier: verify PHIs.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Thu, 23 Apr 2015 11:30:36 +0200 |
parents | 8fc336a04d77 |
children | 48c1ebd24120 |
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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.hotspot.amd64; import static com.oracle.graal.amd64.AMD64.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.asm.amd64.*; import com.oracle.graal.lir.*; import com.oracle.graal.lir.StandardOp.SaveRegistersOp; import com.oracle.graal.lir.asm.*; import com.oracle.graal.lir.framemap.*; /** * Pops the current frame off the stack including the return address and restores the return * registers stored on the stack. */ @Opcode("LEAVE_CURRENT_STACK_FRAME") final class AMD64HotSpotLeaveCurrentStackFrameOp extends AMD64HotSpotEpilogueOp { public static final LIRInstructionClass<AMD64HotSpotLeaveCurrentStackFrameOp> TYPE = LIRInstructionClass.create(AMD64HotSpotLeaveCurrentStackFrameOp.class); private final SaveRegistersOp saveRegisterOp; public AMD64HotSpotLeaveCurrentStackFrameOp(SaveRegistersOp saveRegisterOp) { super(TYPE); 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 stackPointer = registerConfig.getFrameRegister(); // Restore integer result register. final int stackSlotSize = frameMap.getTarget().wordSize; Register integerResultRegister = registerConfig.getReturnRegister(Kind.Long); masm.movptr(integerResultRegister, new AMD64Address(stackPointer, registerSaveLayout.registerToSlot(integerResultRegister) * stackSlotSize)); masm.movptr(rdx, new AMD64Address(stackPointer, registerSaveLayout.registerToSlot(rdx) * stackSlotSize)); // Restore float result register. Register floatResultRegister = registerConfig.getReturnRegister(Kind.Double); masm.movdbl(floatResultRegister, new AMD64Address(stackPointer, registerSaveLayout.registerToSlot(floatResultRegister) * stackSlotSize)); /* * All of the register save area will be popped of the stack. Only the return address * remains. */ leaveFrameAndRestoreRbp(crb, masm); // Remove return address. masm.addq(stackPointer, crb.target.arch.getReturnAddressSize()); } }