1 /*
   2  * Copyright (c) 2013, Red Hat Inc.
   3  * Copyright (c) 2003, 2010, Oracle and/or its affiliates.
   4  * All rights reserved.
   5  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   6  *
   7  * This code is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 only, as
   9  * published by the Free Software Foundation.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  *
  25  */
  26 
  27 #ifndef CPU_AARCH64_VM_COPY_AARCH64_HPP
  28 #define CPU_AARCH64_VM_COPY_AARCH64_HPP
  29 
  30 // Inline functions for memory copy and fill.
  31 
  32 // Contains inline asm implementations
  33 #ifdef TARGET_OS_ARCH_linux_aarch64
  34 # include "copy_linux_aarch64.inline.hpp"
  35 #endif
  36 
  37 
  38 static void pd_fill_to_words(HeapWord* tohw, size_t count, juint value) {
  39   julong* to = (julong*) tohw;
  40   julong  v  = ((julong) value << 32) | value;
  41   while (count-- > 0) {
  42     *to++ = v;
  43   }
  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 }
  61 
  62 #endif // CPU_AARCH64_VM_COPY_AARCH64_HPP