author | jcm |
Thu, 24 May 2018 22:21:00 -0700 | |
changeset 50261 | 3fd701692627 |
parent 47216 | 71c04702a3d5 |
child 53244 | 9807daeb47c4 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2003, 2016, 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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*/ |
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#ifndef CPU_X86_VM_COPY_X86_HPP |
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#define CPU_X86_VM_COPY_X86_HPP |
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// Inline functions for memory copy and fill. |
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// Contains inline asm implementations |
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#include OS_CPU_HEADER_INLINE(copy) |
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static void pd_fill_to_words(HeapWord* tohw, size_t count, juint value) { |
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#ifdef AMD64 |
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julong* to = (julong*) tohw; |
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julong v = ((julong) value << 32) | value; |
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while (count-- > 0) { |
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*to++ = v; |
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} |
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#else |
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juint* to = (juint*)tohw; |
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count *= HeapWordSize / BytesPerInt; |
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while (count-- > 0) { |
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*to++ = value; |
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} |
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#endif // AMD64 |
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} |
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static void pd_fill_to_aligned_words(HeapWord* tohw, size_t count, juint value) { |
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pd_fill_to_words(tohw, count, value); |
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} |
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static void pd_fill_to_bytes(void* to, size_t count, jubyte value) { |
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(void)memset(to, value, count); |
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} |
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static void pd_zero_to_words(HeapWord* tohw, size_t count) { |
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pd_fill_to_words(tohw, count, 0); |
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} |
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static void pd_zero_to_bytes(void* to, size_t count) { |
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(void)memset(to, 0, count); |
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} |
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#endif // CPU_X86_VM_COPY_X86_HPP |