/* * Copyright (c) 2012, 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.sparc; import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG; import static jdk.vm.ci.code.ValueUtil.asRegister; import static jdk.vm.ci.sparc.SPARC.i7; import static jdk.vm.ci.sparc.SPARCKind.XWORD; import org.graalvm.compiler.asm.sparc.SPARCAssembler; import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler; import org.graalvm.compiler.lir.LIRInstructionClass; import org.graalvm.compiler.lir.Opcode; import org.graalvm.compiler.lir.asm.CompilationResultBuilder; import org.graalvm.compiler.lir.sparc.SPARCLIRInstruction; import jdk.vm.ci.code.Register; import jdk.vm.ci.meta.AllocatableValue; /** * Patch the return address of the current frame. */ @Opcode("PATCH_RETURN") final class SPARCHotSpotPatchReturnAddressOp extends SPARCLIRInstruction { public static final LIRInstructionClass<SPARCHotSpotPatchReturnAddressOp> TYPE = LIRInstructionClass.create(SPARCHotSpotPatchReturnAddressOp.class); public static final SizeEstimate SIZE = SizeEstimate.create(1); @Use(REG) AllocatableValue address; SPARCHotSpotPatchReturnAddressOp(AllocatableValue address) { super(TYPE, SIZE); this.address = address; } @Override public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) { Register addrRegister = asRegister(address, XWORD); masm.sub(addrRegister, SPARCAssembler.PC_RETURN_OFFSET, i7); } }