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 }

   1 /*
   2  * Copyright (c) 2003, 2010, 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 #ifndef CPU_X86_VM_COPY_X86_HPP
  26 #define CPU_X86_VM_COPY_X86_HPP
  27 
  28 // Inline functions for memory copy and fill.
  29 
  30 // Contains inline asm implementations
  31 #ifdef TARGET_OS_ARCH_linux_x86
  32 # include "copy_linux_x86.inline.hpp"
  33 #endif
  34 #ifdef TARGET_OS_ARCH_solaris_x86
  35 # include "copy_solaris_x86.inline.hpp"
  36 #endif
  37 #ifdef TARGET_OS_ARCH_windows_x86
  38 # include "copy_windows_x86.inline.hpp"
  39 #endif
  40 
  41 
  42 static void pd_fill_to_words(HeapWord* tohw, size_t count, juint value) {
  43 #ifdef AMD64
  44   julong* to = (julong*) tohw;
  45   julong  v  = ((julong) value << 32) | value;
  46   while (count-- > 0) {
  47     *to++ = v;
  48   }
  49 #else
  50   juint* to = (juint*)tohw;
  51   count *= HeapWordSize / BytesPerInt;
  52   while (count-- > 0) {
  53     *to++ = value;
  54   }
  55 #endif // AMD64
  56 }
  57 
  58 static void pd_fill_to_aligned_words(HeapWord* tohw, size_t count, juint value) {
  59   pd_fill_to_words(tohw, count, value);
  60 }
  61 
  62 static void pd_fill_to_bytes(void* to, size_t count, jubyte value) {
  63   (void)memset(to, value, count);
  64 }
  65 
  66 static void pd_zero_to_words(HeapWord* tohw, size_t count) {
  67   pd_fill_to_words(tohw, count, 0);
  68 }
  69 
  70 static void pd_zero_to_bytes(void* to, size_t count) {
  71   (void)memset(to, 0, count);
  72 }
  73 
  74 #endif // CPU_X86_VM_COPY_X86_HPP