1 /*
   2  * Copyright (c) 1997, 2018, 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 #ifndef SHARE_VM_UTILITIES_GLOBALDEFINITIONS_VISCPP_HPP
  26 #define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_VISCPP_HPP
  27 
  28 #include "prims/jni.h"
  29 
  30 // This file holds compiler-dependent includes,
  31 // globally used constants & types, class (forward)
  32 // declarations and a few frequently used utility functions.
  33 
  34 # include <ctype.h>
  35 # include <string.h>
  36 # include <stdarg.h>
  37 # include <stdlib.h>
  38 # include <stddef.h>// for offsetof
  39 # include <io.h>    // for stream.cpp
  40 # include <float.h> // for _isnan
  41 # include <stdio.h> // for va_list
  42 # include <time.h>
  43 # include <fcntl.h>
  44 # include <limits.h>
  45 // Need this on windows to get the math constants (e.g., M_PI).
  46 #define _USE_MATH_DEFINES
  47 # include <math.h>
  48 
  49 // 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures
  50 // When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in
  51 // system header files.  On 32-bit architectures, there is no problem.
  52 // On 64-bit architectures, defining NULL as a 32-bit constant can cause
  53 // problems with varargs functions: C++ integral promotion rules say for
  54 // varargs, we pass the argument 0 as an int.  So, if NULL was passed to a
  55 // varargs function it will remain 32-bits.  Depending on the calling
  56 // convention of the machine, if the argument is passed on the stack then
  57 // only 32-bits of the "NULL" pointer may be initialized to zero.  The
  58 // other 32-bits will be garbage.  If the varargs function is expecting a
  59 // pointer when it extracts the argument, then we may have a problem.
  60 //
  61 // Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0.
  62 #ifdef _LP64
  63 #undef NULL
  64 // 64-bit Windows uses a P64 data model (not LP64, although we define _LP64)
  65 // Since longs are 32-bit we cannot use 0L here.  Use the Visual C++ specific
  66 // 64-bit integer-suffix (i64) instead.
  67 #define NULL 0i64
  68 #else
  69 #ifndef NULL
  70 #define NULL 0
  71 #endif
  72 #endif
  73 
  74 // NULL vs NULL_WORD:
  75 // On Linux NULL is defined as a special type '__null'. Assigning __null to
  76 // integer variable will cause gcc warning. Use NULL_WORD in places where a
  77 // pointer is stored as integer value.
  78 #define NULL_WORD NULL
  79 
  80 // Compiler-specific primitive types
  81 typedef unsigned __int8  uint8_t;
  82 typedef unsigned __int16 uint16_t;
  83 typedef unsigned __int32 uint32_t;
  84 typedef unsigned __int64 uint64_t;
  85 
  86 #ifdef _WIN64
  87 typedef unsigned __int64 uintptr_t;
  88 #else
  89 typedef unsigned int uintptr_t;
  90 #endif
  91 typedef signed   __int8  int8_t;
  92 typedef signed   __int16 int16_t;
  93 typedef signed   __int32 int32_t;
  94 typedef signed   __int64 int64_t;
  95 #ifdef _WIN64
  96 typedef signed   __int64 intptr_t;
  97 typedef signed   __int64 ssize_t;
  98 #else
  99 typedef signed   int intptr_t;
 100 typedef signed   int ssize_t;
 101 #endif
 102 
 103 #ifndef UINTPTR_MAX
 104 #ifdef _WIN64
 105 #define UINTPTR_MAX _UI64_MAX
 106 #else
 107 #define UINTPTR_MAX _UI32_MAX
 108 #endif
 109 #endif
 110 
 111 //----------------------------------------------------------------------------------------------------
 112 // Additional Java basic types
 113 
 114 typedef unsigned char    jubyte;
 115 typedef unsigned short   jushort;
 116 typedef unsigned int     juint;
 117 typedef unsigned __int64 julong;
 118 
 119 
 120 //----------------------------------------------------------------------------------------------------
 121 // Non-standard stdlib-like stuff:
 122 inline int strcasecmp(const char *s1, const char *s2) { return _stricmp(s1,s2); }
 123 inline int strncasecmp(const char *s1, const char *s2, size_t n) {
 124   return _strnicmp(s1,s2,n);
 125 }
 126 
 127 
 128 //----------------------------------------------------------------------------------------------------
 129 // Debugging
 130 
 131 #if _WIN64
 132 extern "C" void breakpoint();
 133 #define BREAKPOINT ::breakpoint()
 134 #else
 135 #define BREAKPOINT __asm { int 3 }
 136 #endif
 137 
 138 //----------------------------------------------------------------------------------------------------
 139 // Checking for nanness
 140 
 141 inline int g_isnan(jfloat  f)                    { return _isnan(f); }
 142 inline int g_isnan(jdouble f)                    { return _isnan(f); }
 143 
 144 //----------------------------------------------------------------------------------------------------
 145 // Checking for finiteness
 146 
 147 inline int g_isfinite(jfloat  f)                 { return _finite(f); }
 148 inline int g_isfinite(jdouble f)                 { return _finite(f); }
 149 
 150 //----------------------------------------------------------------------------------------------------
 151 // Constant for jlong (specifying an long long constant is C++ compiler specific)
 152 
 153 // Build a 64bit integer constant on with Visual C++
 154 #define CONST64(x)  (x ## i64)
 155 #define UCONST64(x) ((uint64_t)CONST64(x))
 156 
 157 const jlong min_jlong = CONST64(0x8000000000000000);
 158 const jlong max_jlong = CONST64(0x7fffffffffffffff);
 159 
 160 //----------------------------------------------------------------------------------------------------
 161 // Miscellaneous
 162 
 163 // Visual Studio 2005 deprecates POSIX names - use ISO C++ names instead
 164 #if _MSC_VER >= 1400
 165 #define open _open
 166 #define close _close
 167 #define read  _read
 168 #define write _write
 169 #define lseek _lseek
 170 #define unlink _unlink
 171 #define strdup _strdup
 172 #endif
 173 
 174 #pragma warning( disable : 4100 ) // unreferenced formal parameter
 175 #pragma warning( disable : 4127 ) // conditional expression is constant
 176 #pragma warning( disable : 4514 ) // unreferenced inline function has been removed
 177 #pragma warning( disable : 4244 ) // possible loss of data
 178 #pragma warning( disable : 4512 ) // assignment operator could not be generated
 179 #pragma warning( disable : 4201 ) // nonstandard extension used : nameless struct/union (needed in windows.h)
 180 #pragma warning( disable : 4511 ) // copy constructor could not be generated
 181 #pragma warning( disable : 4291 ) // no matching operator delete found; memory will not be freed if initialization thows an exception
 182 #ifdef CHECK_UNHANDLED_OOPS
 183 #pragma warning( disable : 4521 ) // class has multiple copy ctors of a single type
 184 #pragma warning( disable : 4522 ) // class has multiple assignment operators of a single type
 185 #endif // CHECK_UNHANDLED_OOPS
 186 #if _MSC_VER >= 1400
 187 #pragma warning( disable : 4996 ) // unsafe string functions. Same as define _CRT_SECURE_NO_WARNINGS/_CRT_SECURE_NO_DEPRICATE
 188 #endif
 189 
 190 // Portability macros
 191 #define PRAGMA_INTERFACE
 192 #define PRAGMA_IMPLEMENTATION
 193 #define PRAGMA_IMPLEMENTATION_(arg)
 194 #define VALUE_OBJ_CLASS_SPEC    : public _ValueObj
 195 
 196 // Formatting.
 197 #define FORMAT64_MODIFIER "I64"
 198 
 199 // Visual Studio doesn't provide inttypes.h so provide appropriate definitions here.
 200 // The 32 bits ones might need I32 but seem to work ok without it.
 201 #define PRId32       "d"
 202 #define PRIu32       "u"
 203 #define PRIx32       "x"
 204 
 205 #define PRId64       "I64d"
 206 #define PRIu64       "I64u"
 207 #define PRIx64       "I64x"
 208 
 209 #ifdef _LP64
 210 #define PRIdPTR       "I64d"
 211 #define PRIuPTR       "I64u"
 212 #define PRIxPTR       "I64x"
 213 #else
 214 #define PRIdPTR       "d"
 215 #define PRIuPTR       "u"
 216 #define PRIxPTR       "x"
 217 #endif
 218 
 219 #define offset_of(klass,field) offsetof(klass,field)
 220 
 221 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_VISCPP_HPP