1 /*
 2  * Copyright (c) 1997, 2020, Oracle and/or its affiliates. All rights reserved.
 3  * Copyright (c) 2020, 2021, Huawei Technologies Co., Ltd. All rights reserved.
 4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 5  *
 6  * This code is free software; you can redistribute it and/or modify it
 7  * under the terms of the GNU General Public License version 2 only, as
 8  * published by the Free Software Foundation.
 9  *
10  * This code is distributed in the hope that it will be useful, but WITHOUT
11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13  * version 2 for more details (a copy is included in the LICENSE file that
14  * accompanied this code).
15  *
16  * You should have received a copy of the GNU General Public License version
17  * 2 along with this work; if not, write to the Free Software Foundation,
18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19  *
20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21  * or visit www.oracle.com if you need additional information or have any
22  * questions.
23  *
24  */
25 
26 #include "precompiled.hpp"
27 #include "asm/macroAssembler.hpp"
28 #include "runtime/icache.hpp"
29 
30 #define __ _masm->
31 
32 static int icache_flush(address addr, int lines, int magic) {
33   os::icache_flush((long int) addr, (long int) (addr + (lines << ICache::log2_line_size)));
34   return magic;
35 }
36 
37 void ICacheStubGenerator::generate_icache_flush(ICache::flush_icache_stub_t* flush_icache_stub) {
38 
39   address start = (address)icache_flush;
40 
41   *flush_icache_stub = (ICache::flush_icache_stub_t)start;
42 
43   // ICache::invalidate_range() contains explicit condition that the first
44   // call is invoked on the generated icache flush stub code range.
45   ICache::invalidate_range(start, 0);
46 
47   {
48     StubCodeMark mark(this, "ICache", "fake_stub_for_inlined_icache_flush");
49     __ ret();
50   }
51 }
52 
53 #undef __