1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.hotspot.replacements; 24 25 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.arrayStart; 26 27 import org.graalvm.compiler.api.directives.GraalDirectives; 28 import org.graalvm.compiler.api.replacements.ClassSubstitution; 29 import org.graalvm.compiler.api.replacements.MethodSubstitution; 30 import org.graalvm.compiler.hotspot.HotSpotBackend; 31 32 @ClassSubstitution(className = "java.math.BigInteger", optional = true) 33 public class BigIntegerSubstitutions { 34 35 @MethodSubstitution(isStatic = false) 36 static int[] multiplyToLen(@SuppressWarnings("unused") Object receiver, int[] x, int xlen, int[] y, int ylen, int[] zIn) { 37 return multiplyToLenStatic(x, xlen, y, ylen, zIn); 38 } 39 40 @MethodSubstitution(isStatic = true) 41 static int[] multiplyToLenStatic(int[] x, int xlen, int[] y, int ylen, int[] zIn) { 42 int[] zResult = zIn; 43 int zLen; 44 if (zResult == null || zResult.length < (xlen + ylen)) { 45 zLen = xlen + ylen; 46 zResult = new int[xlen + ylen]; 47 } else { 48 zLen = zIn.length; 49 } 50 HotSpotBackend.multiplyToLenStub(arrayStart(x), xlen, arrayStart(y), ylen, arrayStart(zResult), zLen); 51 return zResult; 52 } 53 54 @MethodSubstitution(isStatic = true) 55 static int mulAdd(int[] out, int[] in, int offset, int len, int k) { 56 int[] outNonNull = GraalDirectives.guardingNonNull(out); 57 int newOffset = outNonNull.length - offset; 58 return HotSpotBackend.mulAddStub(arrayStart(outNonNull), arrayStart(in), newOffset, len, k); 59 } 60 61 @MethodSubstitution(isStatic = true) 62 static int implMulAdd(int[] out, int[] in, int offset, int len, int k) { 63 int[] outNonNull = GraalDirectives.guardingNonNull(out); 64 int newOffset = outNonNull.length - offset; 65 return HotSpotBackend.mulAddStub(arrayStart(outNonNull), arrayStart(in), newOffset, len, k); 66 } 67 68 @MethodSubstitution(isStatic = true) 69 static int[] implMontgomeryMultiply(int[] a, int[] b, int[] n, int len, long inv, int[] product) { 70 HotSpotBackend.implMontgomeryMultiply(arrayStart(a), arrayStart(b), arrayStart(n), len, inv, arrayStart(product)); 71 return product; 72 73 } 74 75 @MethodSubstitution(isStatic = true) 76 static int[] implMontgomerySquare(int[] a, int[] n, int len, long inv, int[] product) { 77 HotSpotBackend.implMontgomerySquare(arrayStart(a), arrayStart(n), len, inv, arrayStart(product)); 78 return product; 79 } 80 81 @MethodSubstitution(isStatic = true) 82 static int[] implSquareToLen(int[] x, int len, int[] z, int zLen) { 83 HotSpotBackend.implSquareToLen(arrayStart(x), len, arrayStart(z), zLen); 84 return z; 85 } 86 87 }