1 /*
 2  * Copyright (c) 2002, 2025, Oracle and/or its affiliates. All rights reserved.
 3  * Copyright (c) 2012, 2019 SAP SE. 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
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24  */
25 
26 #ifndef CPU_PPC_STUBROUTINES_PPC_HPP
27 #define CPU_PPC_STUBROUTINES_PPC_HPP
28 
29 // This file holds the platform specific parts of the StubRoutines
30 // definition. See stubRoutines.hpp for a description on how to
31 // extend it.
32 
33 static bool returns_to_call_stub(address return_pc) { return return_pc == _call_stub_return_address; }
34 
35 // emit enum used to size per-blob code buffers
36 
37 #define DEFINE_BLOB_SIZE(blob_name, size) \
38   _ ## blob_name ## _code_size = size,
39 
40 enum platform_dependent_constants {
41   STUBGEN_ARCH_BLOBS_DO(DEFINE_BLOB_SIZE)
42 };
43 
44 #undef DEFINE_BLOB_SIZE
45 
46 // CRC32 Intrinsics.
47 #define CRC32_TABLE_SIZE (4 * 256)
48 #define REVERSE_CRC32_POLY  0xEDB88320
49 #define REVERSE_CRC32C_POLY 0x82F63B78
50 #define INVERSE_REVERSE_CRC32_POLY  0x1aab14226ull
51 #define INVERSE_REVERSE_CRC32C_POLY 0x105fd79bdull
52 #define CRC32_UNROLL_FACTOR 2048
53 #define CRC32_UNROLL_FACTOR2 8
54 
55 class ppc {
56   friend class StubGenerator;
57   friend class StubRoutines;
58 
59  private:
60  public:
61   static address generate_crc_constants(juint reverse_poly);
62 };
63 
64 #endif // CPU_PPC_STUBROUTINES_PPC_HPP