src/share/vm/runtime/icache.cpp

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   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 #include "incls/_precompiled.incl"
  26 #include "incls/_icache.cpp.incl"

  27 
  28 // The flush stub function address
  29 AbstractICache::flush_icache_stub_t AbstractICache::_flush_icache_stub = NULL;
  30 
  31 void AbstractICache::initialize() {
  32   // Making this stub must be FIRST use of assembler
  33   ResourceMark rm;
  34 
  35   BufferBlob* b = BufferBlob::create("flush_icache_stub", ICache::stub_size);
  36   CodeBuffer c(b);
  37 
  38   ICacheStubGenerator g(&c);
  39   g.generate_icache_flush(&_flush_icache_stub);
  40 
  41   // The first use of flush_icache_stub must apply it to itself.
  42   // The StubCodeMark destructor in generate_icache_flush will
  43   // call Assembler::flush, which in turn will call invalidate_range,
  44   // which will in turn call the flush stub.  Thus we don't need an
  45   // explicit call to invalidate_range here.  This assumption is
  46   // checked in invalidate_range.




   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 #include "precompiled.hpp"
  26 #include "memory/resourceArea.hpp"
  27 #include "runtime/icache.hpp"
  28 
  29 // The flush stub function address
  30 AbstractICache::flush_icache_stub_t AbstractICache::_flush_icache_stub = NULL;
  31 
  32 void AbstractICache::initialize() {
  33   // Making this stub must be FIRST use of assembler
  34   ResourceMark rm;
  35 
  36   BufferBlob* b = BufferBlob::create("flush_icache_stub", ICache::stub_size);
  37   CodeBuffer c(b);
  38 
  39   ICacheStubGenerator g(&c);
  40   g.generate_icache_flush(&_flush_icache_stub);
  41 
  42   // The first use of flush_icache_stub must apply it to itself.
  43   // The StubCodeMark destructor in generate_icache_flush will
  44   // call Assembler::flush, which in turn will call invalidate_range,
  45   // which will in turn call the flush stub.  Thus we don't need an
  46   // explicit call to invalidate_range here.  This assumption is
  47   // checked in invalidate_range.