1 /*
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   3  * Copyright (c) 2012, 2017 SAP SE. All rights reserved.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   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.
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  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.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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  25 
  26 #ifndef SHARE_VM_UTILITIES_GLOBALDEFINITIONS_XLC_HPP
  27 #define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_XLC_HPP
  28 
  29 #include "jni.h"
  30 
  31 // This file holds compiler-dependent includes,
  32 // globally used constants & types, class (forward)
  33 // declarations and a few frequently used utility functions.
  34 
  35 #include <ctype.h>
  36 #include <string.h>
  37 #include <stdarg.h>
  38 #include <stddef.h>
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <wchar.h>
  42 
  43 #include <math.h>
  44 #include <time.h>
  45 #include <fcntl.h>
  46 #include <dlfcn.h>
  47 #include <pthread.h>
  48 
  49 #include <limits.h>
  50 #include <errno.h>
  51 
  52 #include <stdint.h>
  53 
  54 // Use XLC compiler builtins instead of inline assembler
  55 #define USE_XLC_BUILTINS
  56 #ifdef USE_XLC_BUILTINS
  57 #include <builtins.h>
  58   #if __IBMCPP__ < 1000
  59   // the funtion prototype for __dcbtst(void *) is missing in XLC V8.0
  60   // I could compile a little test, where I provided the prototype.
  61   // The generated code was correct there. This is the prototype:
  62   // extern "builtin" void __dcbtst (void *);
  63   // For now we don't make use of it when compiling with XLC V8.0
  64   #else
  65   // __IBMCPP__ >= 1000
  66   // XLC V10 provides the prototype for __dcbtst (void *);
  67   #define USE_XLC_PREFETCH_WRITE_BUILTIN
  68   #endif
  69 #endif // USE_XLC_BUILTINS
  70 
  71 // NULL vs NULL_WORD:
  72 // On Linux NULL is defined as a special type '__null'. Assigning __null to
  73 // integer variable will cause gcc warning. Use NULL_WORD in places where a
  74 // pointer is stored as integer value.  On some platforms, sizeof(intptr_t) >
  75 // sizeof(void*), so here we want something which is integer type, but has the
  76 // same size as a pointer.
  77 #ifdef __GNUC__
  78   #error XLC and __GNUC__?
  79 #else
  80   #define NULL_WORD  NULL
  81 #endif
  82 
  83 // AIX also needs a 64 bit NULL to work as a null address pointer.
  84 // Most system includes on AIX would define it as an int 0 if not already defined with one
  85 // exception: /usr/include/dirent.h will unconditionally redefine NULL to int 0 again.
  86 // In this case you need to copy the following defines to a position after #include <dirent.h>
  87 // (see jmv_aix.h).
  88 #ifdef AIX
  89   #ifdef _LP64
  90     #undef NULL
  91     #define NULL 0L
  92   #else
  93     #ifndef NULL
  94       #define NULL 0
  95     #endif
  96   #endif
  97 #endif // AIX
  98 
  99 // Compiler-specific primitive types
 100 // All defs of int (uint16_6 etc) are defined in AIX' /usr/include/stdint.h
 101 
 102 // Additional Java basic types
 103 
 104 typedef uint8_t  jubyte;
 105 typedef uint16_t jushort;
 106 typedef uint32_t juint;
 107 typedef uint64_t julong;
 108 
 109 // checking for nanness
 110 #ifdef AIX
 111 inline int g_isnan(float  f) { return isnan(f); }
 112 inline int g_isnan(double f) { return isnan(f); }
 113 #else
 114 #error "missing platform-specific definition here"
 115 #endif
 116 
 117 // Checking for finiteness
 118 
 119 inline int g_isfinite(jfloat  f)                 { return finite(f); }
 120 inline int g_isfinite(jdouble f)                 { return finite(f); }
 121 
 122 
 123 // Wide characters
 124 
 125 inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); }
 126 
 127 
 128 // Portability macros
 129 #define PRAGMA_INTERFACE             #pragma interface
 130 #define PRAGMA_IMPLEMENTATION        #pragma implementation
 131 #define VALUE_OBJ_CLASS_SPEC
 132 
 133 // Formatting.
 134 #ifdef _LP64
 135 #define FORMAT64_MODIFIER "l"
 136 #else // !_LP64
 137 #define FORMAT64_MODIFIER "ll"
 138 #endif // _LP64
 139 
 140 // Cannot use xlc's offsetof as implementation of hotspot's
 141 // offset_of(), because xlc warns about applying offsetof() to non-POD
 142 // object and xlc cannot compile the expression offsetof(DataLayout,
 143 // _cells[index]) in DataLayout::cell_offset() .  Therefore we define
 144 // offset_of as it is defined for gcc.
 145 #define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16)
 146 
 147 // AIX 5.3 has buggy __thread support. (see JDK-8176442).
 148 #define USE_LIBRARY_BASED_TLS_ONLY 1
 149 
 150 #ifndef USE_LIBRARY_BASED_TLS_ONLY
 151 #define THREAD_LOCAL_DECL __thread
 152 #endif
 153 
 154 // Inlining support
 155 #define NOINLINE
 156 #define ALWAYSINLINE inline __attribute__((always_inline))
 157 
 158 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_XLC_HPP
--- EOF ---