icache_sparc.cpp

/*
 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 */

#include "precompiled.hpp"
#include "asm/macroAssembler.inline.hpp"
#include "runtime/icache.hpp"

#define __ _masm->

void ICacheStubGenerator::generate_icache_flush(
  ICache::flush_icache_stub_t* flush_icache_stub
) {
  StubCodeMark mark(this, "ICache", "flush_icache_stub");
  address start = __ pc();

  Label L;
  __ bind(L);
  __ flush( O0, G0 );
  __ deccc( O1 );
  __ br(Assembler::positive, false, Assembler::pn, L);
  __ delayed()->inc( O0, 8 );
  __ retl(false);
  __ delayed()->mov( O2, O0 ); // handshake with caller to make sure it happened!

  // Must be set here so StubCodeMark destructor can call the flush stub.
  *flush_icache_stub = (ICache::flush_icache_stub_t)start;
};

#undef __