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 OS_CPU_LINUX_X86_VM_COPY_LINUX_X86_INLINE_HPP
  26 #define OS_CPU_LINUX_X86_VM_COPY_LINUX_X86_INLINE_HPP
  27 
  28 static void pd_conjoint_words(HeapWord* from, HeapWord* to, size_t count) {
  29 #ifdef AMD64
  30   (void)memmove(to, from, count * HeapWordSize);
  31 #else
  32   // Includes a zero-count check.
  33   intx temp;
  34   __asm__ volatile("        testl   %6,%6         ;"
  35                    "        jz      7f            ;"
  36                    "        cmpl    %4,%5         ;"
  37                    "        leal    -4(%4,%6,4),%3;"
  38                    "        jbe     1f            ;"
  39                    "        cmpl    %7,%5         ;"
  40                    "        jbe     4f            ;"
  41                    "1:      cmpl    $32,%6        ;"
  42                    "        ja      3f            ;"
  43                    "        subl    %4,%1         ;"
  44                    "2:      movl    (%4),%3       ;"
  45                    "        movl    %7,(%5,%4,1)  ;"
  46                    "        addl    $4,%0         ;"

 289 #endif // AMD64
 290 }
 291 
 292 static void pd_arrayof_conjoint_jlongs(HeapWord* from, HeapWord* to, size_t count) {
 293 #ifdef AMD64
 294   _Copy_arrayof_conjoint_jlongs(from, to, count);
 295 #else
 296   pd_conjoint_jlongs_atomic((jlong*)from, (jlong*)to, count);
 297 #endif // AMD64
 298 }
 299 
 300 static void pd_arrayof_conjoint_oops(HeapWord* from, HeapWord* to, size_t count) {
 301 #ifdef AMD64
 302   assert(BytesPerLong == BytesPerOop, "jlongs and oops must be the same size");
 303   _Copy_arrayof_conjoint_jlongs(from, to, count);
 304 #else
 305   pd_conjoint_oops_atomic((oop*)from, (oop*)to, count);
 306 #endif // AMD64
 307 }
 308 
 309 #endif // OS_CPU_LINUX_X86_VM_COPY_LINUX_X86_INLINE_HPP

   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 OS_CPU_BSD_X86_VM_COPY_BSD_X86_INLINE_HPP
  26 #define OS_CPU_BSD_X86_VM_COPY_BSD_X86_INLINE_HPP
  27 
  28 static void pd_conjoint_words(HeapWord* from, HeapWord* to, size_t count) {
  29 #ifdef AMD64
  30   (void)memmove(to, from, count * HeapWordSize);
  31 #else
  32   // Includes a zero-count check.
  33   intx temp;
  34   __asm__ volatile("        testl   %6,%6         ;"
  35                    "        jz      7f            ;"
  36                    "        cmpl    %4,%5         ;"
  37                    "        leal    -4(%4,%6,4),%3;"
  38                    "        jbe     1f            ;"
  39                    "        cmpl    %7,%5         ;"
  40                    "        jbe     4f            ;"
  41                    "1:      cmpl    $32,%6        ;"
  42                    "        ja      3f            ;"
  43                    "        subl    %4,%1         ;"
  44                    "2:      movl    (%4),%3       ;"
  45                    "        movl    %7,(%5,%4,1)  ;"
  46                    "        addl    $4,%0         ;"

 289 #endif // AMD64
 290 }
 291 
 292 static void pd_arrayof_conjoint_jlongs(HeapWord* from, HeapWord* to, size_t count) {
 293 #ifdef AMD64
 294   _Copy_arrayof_conjoint_jlongs(from, to, count);
 295 #else
 296   pd_conjoint_jlongs_atomic((jlong*)from, (jlong*)to, count);
 297 #endif // AMD64
 298 }
 299 
 300 static void pd_arrayof_conjoint_oops(HeapWord* from, HeapWord* to, size_t count) {
 301 #ifdef AMD64
 302   assert(BytesPerLong == BytesPerOop, "jlongs and oops must be the same size");
 303   _Copy_arrayof_conjoint_jlongs(from, to, count);
 304 #else
 305   pd_conjoint_oops_atomic((oop*)from, (oop*)to, count);
 306 #endif // AMD64
 307 }
 308 
 309 #endif // OS_CPU_BSD_X86_VM_COPY_BSD_X86_INLINE_HPP