Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot.aarch64/src/com/oracle/graal/hotspot/aarch64/AArch64HotSpotPatchReturnAddressOp.java @ 23349:1e8342f17731
[AArch64]: A bunch of fixes and improvements.
author | twisti |
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date | Fri, 22 Jan 2016 13:50:04 -1000 |
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/* * Copyright (c) 2016, 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.aarch64; import static com.oracle.graal.lir.LIRInstruction.OperandFlag.REG; import static jdk.vm.ci.aarch64.AArch64.sp; import static jdk.vm.ci.code.ValueUtil.asRegister; import com.oracle.graal.asm.aarch64.AArch64Address; import com.oracle.graal.asm.aarch64.AArch64MacroAssembler; import com.oracle.graal.asm.aarch64.AArch64MacroAssembler.AArch64ExceptionCode; import com.oracle.graal.lir.LIRInstructionClass; import com.oracle.graal.lir.Opcode; import com.oracle.graal.lir.aarch64.AArch64LIRInstruction; import com.oracle.graal.lir.asm.CompilationResultBuilder; import jdk.vm.ci.meta.AllocatableValue; /** * Patch the return address of the current frame. */ @Opcode("PATCH_RETURN") final class AArch64HotSpotPatchReturnAddressOp extends AArch64LIRInstruction { public static final LIRInstructionClass<AArch64HotSpotPatchReturnAddressOp> TYPE = LIRInstructionClass.create(AArch64HotSpotPatchReturnAddressOp.class); @Use(REG) AllocatableValue address; AArch64HotSpotPatchReturnAddressOp(AllocatableValue address) { super(TYPE); this.address = address; } @Override public void emitCode(CompilationResultBuilder crb, AArch64MacroAssembler masm) { final int frameSize = crb.frameMap.frameSize(); // XXX where is lr exactly? AArch64Address lrAddress = AArch64Address.createUnscaledImmediateAddress(sp, frameSize); masm.brk(AArch64ExceptionCode.BREAKPOINT); // XXX masm.str(64, asRegister(address), lrAddress); } }