1 /*
2 * Copyright (c) 1998, 2020, 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_UTILITIES_GLOBALDEFINITIONS_GCC_HPP
26 #define SHARE_UTILITIES_GLOBALDEFINITIONS_GCC_HPP
27
28 #include "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 <stddef.h>
38 #include <stdio.h>
39 #include <stdint.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 #if defined(LINUX) || defined(_ALLBSD_SOURCE)
53 #include <inttypes.h>
54 #include <signal.h>
55 #ifndef __OpenBSD__
56 #include <ucontext.h>
57 #endif
58 #ifdef __APPLE__
59 #include <AvailabilityMacros.h>
60 #include <mach/mach.h>
61 #endif
62 #include <sys/time.h>
63 #endif // LINUX || _ALLBSD_SOURCE
64
65 // NULL vs NULL_WORD:
66 // On Linux NULL is defined as a special type '__null'. Assigning __null to
67 // integer variable will cause gcc warning. Use NULL_WORD in places where a
68 // pointer is stored as integer value. On some platforms, sizeof(intptr_t) >
69 // sizeof(void*), so here we want something which is integer type, but has the
70 // same size as a pointer.
71 #ifdef __GNUC__
72 #ifdef _LP64
73 #define NULL_WORD 0L
74 #else
75 // Cast 0 to intptr_t rather than int32_t since they are not the same type
76 // on platforms such as Mac OS X.
77 #define NULL_WORD ((intptr_t)0)
78 #endif
79 #else
80 #define NULL_WORD NULL
81 #endif
82
83 #if !defined(LINUX) && !defined(_ALLBSD_SOURCE)
84 // Compiler-specific primitive types
85 typedef unsigned short uint16_t;
86 #ifndef _UINT32_T
87 #define _UINT32_T
88 typedef unsigned int uint32_t;
89 #endif // _UINT32_T
90
91 #if !defined(_SYS_INT_TYPES_H)
92 #ifndef _UINT64_T
93 #define _UINT64_T
94 typedef unsigned long long uint64_t;
95 #endif // _UINT64_T
96 // %%%% how to access definition of intptr_t portably in 5.5 onward?
97 typedef int intptr_t;
98 typedef unsigned int uintptr_t;
99 // If this gets an error, figure out a symbol XXX that implies the
100 // prior definition of intptr_t, and add "&& !defined(XXX)" above.
101 #endif // _SYS_INT_TYPES_H
102
103 #endif // !LINUX && !_ALLBSD_SOURCE
104
105 // Additional Java basic types
106
107 typedef uint8_t jubyte;
108 typedef uint16_t jushort;
109 typedef uint32_t juint;
110 typedef uint64_t julong;
111
112 // checking for nanness
113 #if defined(__APPLE__)
114 inline int g_isnan(double f) { return isnan(f); }
115 #elif defined(LINUX) || defined(_ALLBSD_SOURCE)
116 inline int g_isnan(float f) { return isnanf(f); }
117 inline int g_isnan(double f) { return isnan(f); }
118 #else
119 #error "missing platform-specific definition here"
120 #endif
121
122 #define CAN_USE_NAN_DEFINE 1
123
124
125 // Checking for finiteness
126
127 inline int g_isfinite(jfloat f) { return isfinite(f); }
128 inline int g_isfinite(jdouble f) { return isfinite(f); }
129
130
131 // Wide characters
132
133 inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); }
134
135
136 // Formatting.
137 #ifdef _LP64
138 # ifdef __APPLE__
139 # define FORMAT64_MODIFIER "ll"
140 # else
141 # define FORMAT64_MODIFIER "l"
142 # endif
143 #else // !_LP64
144 #define FORMAT64_MODIFIER "ll"
145 #endif // _LP64
146
147 // gcc warns about applying offsetof() to non-POD object or calculating
148 // offset directly when base address is NULL. Use 16 to get around the
149 // warning. The -Wno-invalid-offsetof option could be used to suppress
150 // this warning, but we instead just avoid the use of offsetof().
151 #define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16)
152
153 #if defined(_LP64) && defined(__APPLE__)
154 #define JLONG_FORMAT "%ld"
155 #define JLONG_FORMAT_W(width) "%" #width "ld"
156 #endif // _LP64 && __APPLE__
157
158 #define THREAD_LOCAL __thread
159
160 // Inlining support
161 #define NOINLINE __attribute__ ((noinline))
162 #define ALWAYSINLINE inline __attribute__ ((always_inline))
163
164 // Alignment
165 //
166 #define ATTRIBUTE_ALIGNED(x) __attribute__((aligned(x)))
167
168 #endif // SHARE_UTILITIES_GLOBALDEFINITIONS_GCC_HPP