1 /*
   2  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright (c) 2014, Red Hat Inc. All rights reserved.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  *
  24  */
  25 
  26 #ifndef CPU_AARCH64_VM_COPY_AARCH64_HPP
  27 #define CPU_AARCH64_VM_COPY_AARCH64_HPP
  28 
  29 // Inline functions for memory copy and fill.
  30 
  31 // Contains inline asm implementations
  32 #ifdef TARGET_OS_ARCH_linux_aarch64
  33 # include "copy_linux_aarch64.inline.hpp"
  34 #endif
  35 
  36 
  37 static void pd_fill_to_words(HeapWord* tohw, size_t count, juint value) {
  38   julong* to = (julong*) tohw;
  39   julong  v  = ((julong) value << 32) | value;
  40   while (count-- > 0) {
  41     *to++ = v;
  42   }
  43 }
  44 
  45 static void pd_fill_to_aligned_words(HeapWord* tohw, size_t count, juint value) {
  46   pd_fill_to_words(tohw, count, value);
  47 }
  48 
  49 static void pd_fill_to_bytes(void* to, size_t count, jubyte value) {
  50   (void)memset(to, value, count);
  51 }
  52 
  53 static void pd_zero_to_words(HeapWord* tohw, size_t count) {
  54   pd_fill_to_words(tohw, count, 0);
  55 }
  56 
  57 static void pd_zero_to_bytes(void* to, size_t count) {
  58   (void)memset(to, 0, count);
  59 }
  60 
  61 #endif // CPU_AARCH64_VM_COPY_AARCH64_HPP