LLVM OpenMP* Runtime Library
kmp_platform.h
1 /*
2  * kmp_platform.h -- header for determining operating system and architecture
3  */
4 
5 //===----------------------------------------------------------------------===//
6 //
7 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
8 // See https://llvm.org/LICENSE.txt for license information.
9 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef KMP_PLATFORM_H
14 #define KMP_PLATFORM_H
15 
16 /* ---------------------- Operating system recognition ------------------- */
17 
18 #define KMP_OS_LINUX 0
19 #define KMP_OS_DRAGONFLY 0
20 #define KMP_OS_FREEBSD 0
21 #define KMP_OS_KFREEBSD 0
22 #define KMP_OS_NETBSD 0
23 #define KMP_OS_OPENBSD 0
24 #define KMP_OS_DARWIN 0
25 #define KMP_OS_WINDOWS 0
26 #define KMP_OS_CNK 0
27 #define KMP_OS_HURD 0
28 #define KMP_OS_UNIX 0 /* disjunction of KMP_OS_LINUX, KMP_OS_DARWIN etc. */
29 
30 #ifdef _WIN32
31 #undef KMP_OS_WINDOWS
32 #define KMP_OS_WINDOWS 1
33 #endif
34 
35 #if (defined __APPLE__ && defined __MACH__)
36 #undef KMP_OS_DARWIN
37 #define KMP_OS_DARWIN 1
38 #endif
39 
40 // in some ppc64 linux installations, only the second condition is met
41 #if (defined __linux)
42 #undef KMP_OS_LINUX
43 #define KMP_OS_LINUX 1
44 #elif (defined __linux__)
45 #undef KMP_OS_LINUX
46 #define KMP_OS_LINUX 1
47 #else
48 #endif
49 
50 #if (defined __DragonFly__)
51 #undef KMP_OS_DRAGONFLY
52 #define KMP_OS_DRAGONFLY 1
53 #endif
54 
55 #if (defined __FreeBSD__)
56 #undef KMP_OS_FREEBSD
57 #define KMP_OS_FREEBSD 1
58 #endif
59 
60 #if (defined __FreeBSD_kernel__)
61 #undef KMP_OS_KFREEBSD
62 #define KMP_OS_KFREEBSD 1
63 #endif
64 
65 #if (defined __NetBSD__)
66 #undef KMP_OS_NETBSD
67 #define KMP_OS_NETBSD 1
68 #endif
69 
70 #if (defined __OpenBSD__)
71 #undef KMP_OS_OPENBSD
72 #define KMP_OS_OPENBSD 1
73 #endif
74 
75 #if (defined __bgq__)
76 #undef KMP_OS_CNK
77 #define KMP_OS_CNK 1
78 #endif
79 
80 #if (defined __GNU__)
81 #undef KMP_OS_HURD
82 #define KMP_OS_HURD 1
83 #endif
84 
85 #if (1 != \
86  KMP_OS_LINUX + KMP_OS_DRAGONFLY + KMP_OS_FREEBSD + KMP_OS_NETBSD + \
87  KMP_OS_OPENBSD + KMP_OS_DARWIN + KMP_OS_WINDOWS + KMP_OS_HURD + KMP_OS_KFREEBSD)
88 #error Unknown OS
89 #endif
90 
91 #if KMP_OS_LINUX || KMP_OS_DRAGONFLY || KMP_OS_FREEBSD || KMP_OS_NETBSD || \
92  KMP_OS_OPENBSD || KMP_OS_DARWIN || KMP_OS_HURD || KMP_OS_KFREEBSD
93 #undef KMP_OS_UNIX
94 #define KMP_OS_UNIX 1
95 #endif
96 
97 /* ---------------------- Architecture recognition ------------------- */
98 
99 #define KMP_ARCH_X86 0
100 #define KMP_ARCH_X86_64 0
101 #define KMP_ARCH_AARCH64 0
102 #define KMP_ARCH_PPC64_BE 0
103 #define KMP_ARCH_PPC64_LE 0
104 #define KMP_ARCH_PPC64 (KMP_ARCH_PPC64_LE || KMP_ARCH_PPC64_BE)
105 #define KMP_ARCH_MIPS 0
106 #define KMP_ARCH_MIPS64 0
107 
108 #if KMP_OS_WINDOWS
109 #if defined(_M_AMD64) || defined(__x86_64)
110 #undef KMP_ARCH_X86_64
111 #define KMP_ARCH_X86_64 1
112 #else
113 #undef KMP_ARCH_X86
114 #define KMP_ARCH_X86 1
115 #endif
116 #endif
117 
118 #if KMP_OS_UNIX
119 #if defined __x86_64
120 #undef KMP_ARCH_X86_64
121 #define KMP_ARCH_X86_64 1
122 #elif defined __i386
123 #undef KMP_ARCH_X86
124 #define KMP_ARCH_X86 1
125 #elif defined __powerpc64__
126 #if defined __LITTLE_ENDIAN__
127 #undef KMP_ARCH_PPC64_LE
128 #define KMP_ARCH_PPC64_LE 1
129 #else
130 #undef KMP_ARCH_PPC64_BE
131 #define KMP_ARCH_PPC64_BE 1
132 #endif
133 #elif defined __aarch64__
134 #undef KMP_ARCH_AARCH64
135 #define KMP_ARCH_AARCH64 1
136 #elif defined __mips__
137 #if defined __mips64
138 #undef KMP_ARCH_MIPS64
139 #define KMP_ARCH_MIPS64 1
140 #else
141 #undef KMP_ARCH_MIPS
142 #define KMP_ARCH_MIPS 1
143 #endif
144 #endif
145 #endif
146 
147 #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7R__) || \
148  defined(__ARM_ARCH_7A__)
149 #define KMP_ARCH_ARMV7 1
150 #endif
151 
152 #if defined(KMP_ARCH_ARMV7) || defined(__ARM_ARCH_6__) || \
153  defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || \
154  defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6T2__) || \
155  defined(__ARM_ARCH_6ZK__)
156 #define KMP_ARCH_ARMV6 1
157 #endif
158 
159 #if defined(KMP_ARCH_ARMV6) || defined(__ARM_ARCH_5T__) || \
160  defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) || \
161  defined(__ARM_ARCH_5TEJ__)
162 #define KMP_ARCH_ARMV5 1
163 #endif
164 
165 #if defined(KMP_ARCH_ARMV5) || defined(__ARM_ARCH_4__) || \
166  defined(__ARM_ARCH_4T__)
167 #define KMP_ARCH_ARMV4 1
168 #endif
169 
170 #if defined(KMP_ARCH_ARMV4) || defined(__ARM_ARCH_3__) || \
171  defined(__ARM_ARCH_3M__)
172 #define KMP_ARCH_ARMV3 1
173 #endif
174 
175 #if defined(KMP_ARCH_ARMV3) || defined(__ARM_ARCH_2__)
176 #define KMP_ARCH_ARMV2 1
177 #endif
178 
179 #if defined(KMP_ARCH_ARMV2)
180 #define KMP_ARCH_ARM 1
181 #endif
182 
183 #if defined(__MIC__) || defined(__MIC2__)
184 #define KMP_MIC 1
185 #if __MIC2__ || __KNC__
186 #define KMP_MIC1 0
187 #define KMP_MIC2 1
188 #else
189 #define KMP_MIC1 1
190 #define KMP_MIC2 0
191 #endif
192 #else
193 #define KMP_MIC 0
194 #define KMP_MIC1 0
195 #define KMP_MIC2 0
196 #endif
197 
198 /* Specify 32 bit architectures here */
199 #define KMP_32_BIT_ARCH (KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_MIPS)
200 
201 // Platforms which support Intel(R) Many Integrated Core Architecture
202 #define KMP_MIC_SUPPORTED \
203  ((KMP_ARCH_X86 || KMP_ARCH_X86_64) && (KMP_OS_LINUX || KMP_OS_WINDOWS))
204 
205 // TODO: Fixme - This is clever, but really fugly
206 #if (1 != \
207  KMP_ARCH_X86 + KMP_ARCH_X86_64 + KMP_ARCH_ARM + KMP_ARCH_PPC64 + \
208  KMP_ARCH_AARCH64 + KMP_ARCH_MIPS + KMP_ARCH_MIPS64)
209 #error Unknown or unsupported architecture
210 #endif
211 
212 #endif // KMP_PLATFORM_H