--- /dev/null 2017-01-22 10:16:57.869617664 -0800 +++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot.sparc/src/org/graalvm/compiler/hotspot/sparc/SPARCHotSpotPatchReturnAddressOp.java 2017-02-15 16:59:18.262446733 -0800 @@ -0,0 +1,60 @@ +/* + * 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 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); + } +}