1 /*
 2  * Copyright (c) 1997, 2023, Oracle and/or its affiliates. All rights reserved.
 3  * Copyright 2009, 2021, Red Hat, Inc.
 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
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18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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25 
26 #ifndef CPU_ZERO_GLOBALDEFINITIONS_ZERO_HPP
27 #define CPU_ZERO_GLOBALDEFINITIONS_ZERO_HPP
28 
29 #ifdef _LP64
30 #define SUPPORTS_NATIVE_CX8
31 #endif
32 
33 // The expected size in bytes of a cache line.
34 #define DEFAULT_CACHE_LINE_SIZE 64
35 
36 // The default padding size for data structures to avoid false sharing.
37 #define DEFAULT_PADDING_SIZE DEFAULT_CACHE_LINE_SIZE
38 
39 #include <ffi.h>
40 
41 // Indicates whether the C calling conventions require that
42 // 32-bit integer argument values are extended to 64 bits.
43 const bool CCallingConventionRequiresIntsAsLongs = false;
44 #if defined(AIX)
45 const size_t pd_segfault_address = -1;
46 #elif defined(S390)
47 const size_t pd_segfault_address = 4096;
48 #else
49 const size_t pd_segfault_address = 1024;
50 #endif
51 
52 #endif // CPU_ZERO_GLOBALDEFINITIONS_ZERO_HPP