hotspot/src/os_cpu/linux_x86/vm/prefetch_linux_x86.inline.hpp
author herrick
Fri, 17 Sep 2010 07:11:14 -0400
changeset 6792 2f66b2a9dfc1
parent 5547 f4b087cbb361
child 7397 5b173b4ca846
permissions -rw-r--r--
Merge
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
     1
/*
5547
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 1
diff changeset
     2
 * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
     3
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
489c9b5090e2 Initial load
duke
parents:
diff changeset
     4
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
     5
 * This code is free software; you can redistribute it and/or modify it
489c9b5090e2 Initial load
duke
parents:
diff changeset
     6
 * under the terms of the GNU General Public License version 2 only, as
489c9b5090e2 Initial load
duke
parents:
diff changeset
     7
 * published by the Free Software Foundation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
     8
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
     9
 * This code is distributed in the hope that it will be useful, but WITHOUT
489c9b5090e2 Initial load
duke
parents:
diff changeset
    10
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
489c9b5090e2 Initial load
duke
parents:
diff changeset
    11
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
489c9b5090e2 Initial load
duke
parents:
diff changeset
    12
 * version 2 for more details (a copy is included in the LICENSE file that
489c9b5090e2 Initial load
duke
parents:
diff changeset
    13
 * accompanied this code).
489c9b5090e2 Initial load
duke
parents:
diff changeset
    14
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    15
 * You should have received a copy of the GNU General Public License version
489c9b5090e2 Initial load
duke
parents:
diff changeset
    16
 * 2 along with this work; if not, write to the Free Software Foundation,
489c9b5090e2 Initial load
duke
parents:
diff changeset
    17
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    18
 *
5547
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 1
diff changeset
    19
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 1
diff changeset
    20
 * or visit www.oracle.com if you need additional information or have any
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 1
diff changeset
    21
 * questions.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    22
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    23
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
    24
489c9b5090e2 Initial load
duke
parents:
diff changeset
    25
489c9b5090e2 Initial load
duke
parents:
diff changeset
    26
inline void Prefetch::read (void *loc, intx interval) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    27
#ifdef AMD64
489c9b5090e2 Initial load
duke
parents:
diff changeset
    28
  __asm__ ("prefetcht0 (%0,%1,1)" : : "r" (loc), "r" (interval));
489c9b5090e2 Initial load
duke
parents:
diff changeset
    29
#endif // AMD64
489c9b5090e2 Initial load
duke
parents:
diff changeset
    30
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
    31
489c9b5090e2 Initial load
duke
parents:
diff changeset
    32
inline void Prefetch::write(void *loc, intx interval) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    33
#ifdef AMD64
489c9b5090e2 Initial load
duke
parents:
diff changeset
    34
489c9b5090e2 Initial load
duke
parents:
diff changeset
    35
  // Do not use the 3dnow prefetchw instruction.  It isn't supported on em64t.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    36
  //  __asm__ ("prefetchw (%0,%1,1)" : : "r" (loc), "r" (interval));
489c9b5090e2 Initial load
duke
parents:
diff changeset
    37
  __asm__ ("prefetcht0 (%0,%1,1)" : : "r" (loc), "r" (interval));
489c9b5090e2 Initial load
duke
parents:
diff changeset
    38
489c9b5090e2 Initial load
duke
parents:
diff changeset
    39
#endif // AMD64
489c9b5090e2 Initial load
duke
parents:
diff changeset
    40
}