1 /*
2 * Copyright (c) 1997, 2010, 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 // Need this on windows to get the math constants (e.g., M_PI).
45 #define _USE_MATH_DEFINES
46 # include <math.h>
47
48 // 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures
49 // When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in
50 // system header files. On 32-bit architectures, there is no problem.
51 // On 64-bit architectures, defining NULL as a 32-bit constant can cause
52 // problems with varargs functions: C++ integral promotion rules say for
53 // varargs, we pass the argument 0 as an int. So, if NULL was passed to a
54 // varargs function it will remain 32-bits. Depending on the calling
55 // convention of the machine, if the argument is passed on the stack then
56 // only 32-bits of the "NULL" pointer may be initialized to zero. The
57 // other 32-bits will be garbage. If the varargs function is expecting a
58 // pointer when it extracts the argument, then we may have a problem.
59 //
60 // Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0.
61 #ifdef _LP64
62 #undef NULL
63 // 64-bit Windows uses a P64 data model (not LP64, although we define _LP64)
64 // Since longs are 32-bit we cannot use 0L here. Use the Visual C++ specific
65 // 64-bit integer-suffix (i64) instead.
66 #define NULL 0i64
67 #else
68 #ifndef NULL
69 #define NULL 0
70 #endif
71 #endif
72
73 // NULL vs NULL_WORD:
74 // On Linux NULL is defined as a special type '__null'. Assigning __null to
75 // integer variable will cause gcc warning. Use NULL_WORD in places where a
76 // pointer is stored as integer value.
77 #define NULL_WORD NULL
78
79 // Compiler-specific primitive types
80 typedef unsigned __int8 uint8_t;
81 typedef unsigned __int16 uint16_t;
82 typedef unsigned __int32 uint32_t;
83 typedef unsigned __int64 uint64_t;
84
85 #ifdef _WIN64
86 typedef unsigned __int64 uintptr_t;
87 #else
88 typedef unsigned int uintptr_t;
89 #endif
90 typedef signed __int8 int8_t;
91 typedef signed __int16 int16_t;
92 typedef signed __int32 int32_t;
93 typedef signed __int64 int64_t;
94 #ifdef _WIN64
95 typedef signed __int64 intptr_t;
96 typedef signed __int64 ssize_t;
97 #else
98 typedef signed int intptr_t;
99 typedef signed int ssize_t;
100 #endif
101
102 //----------------------------------------------------------------------------------------------------
103 // Additional Java basic types
104
105 typedef unsigned char jubyte;
106 typedef unsigned short jushort;
107 typedef unsigned int juint;
108 typedef unsigned __int64 julong;
109
110 //----------------------------------------------------------------------------------------------------
111 // Special (possibly not-portable) casts
112 // Cast floats into same-size integers and vice-versa w/o changing bit-pattern
113
114 inline jint jint_cast (jfloat x) { return *(jint* )&x; }
115 inline jlong jlong_cast (jdouble x) { return *(jlong* )&x; }
116
117 inline jfloat jfloat_cast (jint x) { return *(jfloat* )&x; }
118 inline jdouble jdouble_cast(jlong x) { return *(jdouble*)&x; }
119
120
121 //----------------------------------------------------------------------------------------------------
122 // Non-standard stdlib-like stuff:
123 inline int strcasecmp(const char *s1, const char *s2) { return _stricmp(s1,s2); }
124
125
126 //----------------------------------------------------------------------------------------------------
127 // Debugging
128
129 #if _WIN64
130 extern "C" void breakpoint();
131 #define BREAKPOINT ::breakpoint()
132 #else
133 #define BREAKPOINT __asm { int 3 }
134 #endif
135
136 //----------------------------------------------------------------------------------------------------
137 // Checking for nanness
138
139 inline int g_isnan(jfloat f) { return _isnan(f); }
140 inline int g_isnan(jdouble f) { return _isnan(f); }
141
142 //----------------------------------------------------------------------------------------------------
143 // Checking for finiteness
144
145 inline int g_isfinite(jfloat f) { return _finite(f); }
146 inline int g_isfinite(jdouble f) { return _finite(f); }
147
148 //----------------------------------------------------------------------------------------------------
149 // Constant for jlong (specifying an long long constant is C++ compiler specific)
150
151 // Build a 64bit integer constant on with Visual C++
152 #define CONST64(x) (x ## i64)
153 #define UCONST64(x) ((uint64_t)CONST64(x))
154
155 const jlong min_jlong = CONST64(0x8000000000000000);
156 const jlong max_jlong = CONST64(0x7fffffffffffffff);
157
158 //----------------------------------------------------------------------------------------------------
159 // Miscellaneous
160
161 // Visual Studio 2005 deprecates POSIX names - use ISO C++ names instead
162 #if _MSC_VER >= 1400
163 #define open _open
164 #define close _close
165 #define read _read
166 #define write _write
167 #define lseek _lseek
168 #define unlink _unlink
169 #define strdup _strdup
170 #endif
171
172 #pragma warning( disable : 4100 ) // unreferenced formal parameter
173 #pragma warning( disable : 4127 ) // conditional expression is constant
174 #pragma warning( disable : 4514 ) // unreferenced inline function has been removed
175 #pragma warning( disable : 4244 ) // possible loss of data
176 #pragma warning( disable : 4512 ) // assignment operator could not be generated
177 #pragma warning( disable : 4201 ) // nonstandard extension used : nameless struct/union (needed in windows.h)
178 #pragma warning( disable : 4511 ) // copy constructor could not be generated
179 #pragma warning( disable : 4291 ) // no matching operator delete found; memory will not be freed if initialization thows an exception
180 #if _MSC_VER >= 1400
181 #pragma warning( disable : 4996 ) // unsafe string functions. Same as define _CRT_SECURE_NO_WARNINGS/_CRT_SECURE_NO_DEPRICATE
182 #endif
183
184 inline int vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr) {
185 // If number of characters written == count, Windows doesn't write a
186 // terminating NULL, so we do it ourselves.
187 int ret = _vsnprintf(buf, count, fmt, argptr);
188 if (count > 0) buf[count-1] = '\0';
189 return ret;
190 }
191
192 // Portability macros
193 #define PRAGMA_INTERFACE
194 #define PRAGMA_IMPLEMENTATION
195 #define PRAGMA_IMPLEMENTATION_(arg)
196 #define VALUE_OBJ_CLASS_SPEC : public _ValueObj
197
198 // Formatting.
199 #define FORMAT64_MODIFIER "I64"
200
201 #define offset_of(klass,field) offsetof(klass,field)
202
203 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_VISCPP_HPP