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1 /*
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2 * Copyright 2003-2004 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 // Inline functions for memory copy and fill.
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26
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27 // Contains inline asm implementations
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28 #include "incls/_copy_pd.inline.hpp.incl"
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29
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30 static void pd_fill_to_words(HeapWord* tohw, size_t count, juint value) {
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31 #ifdef AMD64
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32 julong* to = (julong*) tohw;
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33 julong v = ((julong) value << 32) | value;
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34 while (count-- > 0) {
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35 *to++ = v;
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36 }
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37 #else
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38 juint* to = (juint*)tohw;
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39 count *= HeapWordSize / BytesPerInt;
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40 while (count-- > 0) {
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41 *to++ = value;
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42 }
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43 #endif // AMD64
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44 }
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45
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46 static void pd_fill_to_aligned_words(HeapWord* tohw, size_t count, juint value) {
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47 pd_fill_to_words(tohw, count, value);
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48 }
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49
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50 static void pd_fill_to_bytes(void* to, size_t count, jubyte value) {
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51 (void)memset(to, value, count);
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52 }
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53
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54 static void pd_zero_to_words(HeapWord* tohw, size_t count) {
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55 pd_fill_to_words(tohw, count, 0);
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56 }
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57
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58 static void pd_zero_to_bytes(void* to, size_t count) {
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59 (void)memset(to, 0, count);
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60 }
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