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 <stdlib.h>
40 #include <wchar.h>
41
42 #include <math.h>
43 #include <time.h>
44 #include <fcntl.h>
45 #include <dlfcn.h>
46 #include <pthread.h>
47
48 #include <limits.h>
49 #include <errno.h>
50
51 #if defined(LINUX) || defined(_ALLBSD_SOURCE)
52 #include <inttypes.h>
53 #include <signal.h>
54 #ifndef __OpenBSD__
55 #include <ucontext.h>
56 #endif
57 #ifdef __APPLE__
58 #include <AvailabilityMacros.h>
59 #include <mach/mach.h>
60 #endif
61 #include <sys/time.h>
62 #endif // LINUX || _ALLBSD_SOURCE
63
64 // NULL vs NULL_WORD:
65 // On Linux NULL is defined as a special type '__null'. Assigning __null to
66 // integer variable will cause gcc warning. Use NULL_WORD in places where a
67 // pointer is stored as integer value. On some platforms, sizeof(intptr_t) >
68 // sizeof(void*), so here we want something which is integer type, but has the
69 // same size as a pointer.
70 #ifdef __GNUC__
71 #ifdef _LP64
72 #define NULL_WORD 0L
73 #else
74 // Cast 0 to intptr_t rather than int32_t since they are not the same type
75 // on platforms such as Mac OS X.
76 #define NULL_WORD ((intptr_t)0)
77 #endif
78 #else
79 #define NULL_WORD NULL
80 #endif
81
82 #if !defined(LINUX) && !defined(_ALLBSD_SOURCE)
83 // Compiler-specific primitive types
84 typedef unsigned short uint16_t;
85 #ifndef _UINT32_T
86 #define _UINT32_T
87 typedef unsigned int uint32_t;
88 #endif // _UINT32_T
89
90 #if !defined(_SYS_INT_TYPES_H)
91 #ifndef _UINT64_T
92 #define _UINT64_T
93 typedef unsigned long long uint64_t;
94 #endif // _UINT64_T
95 // %%%% how to access definition of intptr_t portably in 5.5 onward?
96 typedef int intptr_t;
97 typedef unsigned int uintptr_t;
98 // If this gets an error, figure out a symbol XXX that implies the
99 // prior definition of intptr_t, and add "&& !defined(XXX)" above.
100 #endif // _SYS_INT_TYPES_H
101
102 #endif // !LINUX && !_ALLBSD_SOURCE
103
104 // Additional Java basic types
105
106 typedef uint8_t jubyte;
107 typedef uint16_t jushort;
108 typedef uint32_t juint;
109 typedef uint64_t julong;
110
111 // checking for nanness
112 #if defined(__APPLE__)
113 inline int g_isnan(double f) { return isnan(f); }
114 #elif defined(LINUX) || defined(_ALLBSD_SOURCE)
115 inline int g_isnan(float f) { return isnanf(f); }
116 inline int g_isnan(double f) { return isnan(f); }
117 #else
118 #error "missing platform-specific definition here"
119 #endif
120
121 #define CAN_USE_NAN_DEFINE 1
122
123
124 // Checking for finiteness
125
126 inline int g_isfinite(jfloat f) { return isfinite(f); }
127 inline int g_isfinite(jdouble f) { return isfinite(f); }
128
129
130 // Wide characters
131
132 inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); }
133
134
135 // Formatting.
136 #ifdef _LP64
137 # ifdef __APPLE__
138 # define FORMAT64_MODIFIER "ll"
139 # else
140 # define FORMAT64_MODIFIER "l"
141 # endif
142 #else // !_LP64
143 #define FORMAT64_MODIFIER "ll"
144 #endif // _LP64
145
146 // gcc warns about applying offsetof() to non-POD object or calculating
147 // offset directly when base address is NULL. Use 16 to get around the
148 // warning. The -Wno-invalid-offsetof option could be used to suppress
149 // this warning, but we instead just avoid the use of offsetof().
150 #define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16)
151
152 #if defined(_LP64) && defined(__APPLE__)
153 #define JLONG_FORMAT "%ld"
154 #define JLONG_FORMAT_W(width) "%" #width "ld"
155 #endif // _LP64 && __APPLE__
156
157 #define THREAD_LOCAL __thread
158
159 // Inlining support
160 #define NOINLINE __attribute__ ((noinline))
161 #define ALWAYSINLINE inline __attribute__ ((always_inline))
162
163 // Alignment
164 //
165 #define ATTRIBUTE_ALIGNED(x) __attribute__((aligned(x)))
166
167 #endif // SHARE_UTILITIES_GLOBALDEFINITIONS_GCC_HPP