1 /*
 2  * Copyright (c) 1999, 2023, 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 "ci/ciUtilities.hpp"
27 #include "gc/shared/cardTableBarrierSet.hpp"
28 #include "gc/shared/cardTable.hpp"
29 #include "gc/shared/collectedHeap.hpp"
30 #include "memory/universe.hpp"
31 
32 // ciUtilities
33 //
34 // Miscellaneous internal compiler interface routines.
35 
36 // ------------------------------------------------------------------
37 // basictype_to_str
38 const char* basictype_to_str(BasicType t) {
39   const char* str = type2name(t);
40   if (str == nullptr) return "illegal";
41   return str;
42 }
43 
44 // ------------------------------------------------------------------
45 // card_table_base
46 CardTable::CardValue* ci_card_table_address() {
47   BarrierSet* bs = BarrierSet::barrier_set();
48   CardTableBarrierSet* ctbs = barrier_set_cast<CardTableBarrierSet>(bs);
49   CardTable* ct = ctbs->card_table();
50   return ct->byte_map_base();
51 }
52 
53 bool is_card_table_address(address adr) {
54   if (Universe::is_fully_initialized()) {
55     BarrierSet* bs = BarrierSet::barrier_set(); 
56     if (bs->is_a(BarrierSet::CardTableBarrierSet)) {
57       return adr == ci_card_table_address_as<address>();
58     }
59   }
60   return false;
61 }