1 /* 2 * Copyright (c) 2003, 2004, 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 */ 24 25 // Inline functions for memory copy and fill. 26 27 // Contains inline asm implementations 28 #include "incls/_copy_pd.inline.hpp.incl" 29 30 static void pd_fill_to_words(HeapWord* tohw, size_t count, juint value) { 31 #ifdef AMD64 32 julong* to = (julong*) tohw; 33 julong v = ((julong) value << 32) | value; 34 while (count-- > 0) { 35 *to++ = v; 36 } 37 #else 38 juint* to = (juint*)tohw; 39 count *= HeapWordSize / BytesPerInt; 40 while (count-- > 0) { 41 *to++ = value; 42 } 43 #endif // AMD64 44 } 45 46 static void pd_fill_to_aligned_words(HeapWord* tohw, size_t count, juint value) { 47 pd_fill_to_words(tohw, count, value); 48 } 49 50 static void pd_fill_to_bytes(void* to, size_t count, jubyte value) { 51 (void)memset(to, value, count); 52 } 53 54 static void pd_zero_to_words(HeapWord* tohw, size_t count) { 55 pd_fill_to_words(tohw, count, 0); 56 } 57 58 static void pd_zero_to_bytes(void* to, size_t count) { 59 (void)memset(to, 0, count); 60 }