1 /*
   2  * Copyright (c) 1997, 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 #include "precompiled.hpp"
  26 #include "asm/macroAssembler.inline.hpp"
  27 #include "runtime/icache.hpp"
  28 
  29 #define __ _masm->
  30 
  31 void ICacheStubGenerator::generate_icache_flush(
  32   ICache::flush_icache_stub_t* flush_icache_stub
  33 ) {
  34   StubCodeMark mark(this, "ICache", "flush_icache_stub");
  35   address start = __ pc();
  36 
  37   Label L;
  38   __ bind(L);
  39   __ flush( O0, G0 );
  40   __ deccc( O1 );
  41   __ br(Assembler::positive, false, Assembler::pn, L);
  42   __ delayed()->inc( O0, 8 );
  43   __ retl(false);
  44   __ delayed()->mov( O2, O0 ); // handshake with caller to make sure it happened!
  45 
  46   // Must be set here so StubCodeMark destructor can call the flush stub.
  47   *flush_icache_stub = (ICache::flush_icache_stub_t)start;
  48 };
  49 
  50 #undef __