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/*
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* Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package org.graalvm.compiler.lir.aarch64;
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import org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler;
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import org.graalvm.compiler.debug.GraalError;
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import org.graalvm.compiler.lir.LIRInstructionClass;
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import org.graalvm.compiler.lir.Opcode;
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import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
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import jdk.vm.ci.aarch64.AArch64Kind;
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import jdk.vm.ci.code.ValueUtil;
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import jdk.vm.ci.meta.Value;
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@Opcode("BSWAP")
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public final class AArch64ByteSwapOp extends AArch64LIRInstruction {
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public static final LIRInstructionClass<AArch64ByteSwapOp> TYPE = LIRInstructionClass.create(AArch64ByteSwapOp.class);
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@Def({OperandFlag.REG, OperandFlag.HINT}) protected Value result;
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@Use protected Value input;
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public AArch64ByteSwapOp(Value result, Value input) {
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super(TYPE);
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this.result = result;
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this.input = input;
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}
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@Override
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public void emitCode(CompilationResultBuilder crb, AArch64MacroAssembler masm) {
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switch ((AArch64Kind) input.getPlatformKind()) {
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case DWORD:
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masm.rev(32, ValueUtil.asRegister(result), ValueUtil.asRegister(input));
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break;
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case QWORD:
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masm.rev(64, ValueUtil.asRegister(result), ValueUtil.asRegister(input));
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break;
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default:
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throw GraalError.shouldNotReachHere();
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}
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}
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}
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