Mercurial > hg > graal-jvmci-8
annotate src/share/vm/utilities/globalDefinitions_gcc.hpp @ 23614:32b682649973 jdk8u75-b04
8132051: Better byte behavior
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author | kevinw |
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date | Fri, 15 Jan 2016 22:33:15 +0000 |
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0 | 1 /* |
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2 * Copyright (c) 1998, 2015, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_HPP |
26 #define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_HPP | |
27 | |
28 #include "prims/jni.h" | |
29 | |
0 | 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 #ifdef SOLARIS | |
43 #include <ieeefp.h> | |
44 #endif // SOLARIS | |
45 | |
46 #include <math.h> | |
47 #include <time.h> | |
48 #include <fcntl.h> | |
49 #include <dlfcn.h> | |
50 #include <pthread.h> | |
51 | |
52 #ifdef SOLARIS | |
53 #include <thread.h> | |
54 #endif // SOLARIS | |
55 | |
56 #include <limits.h> | |
57 #include <errno.h> | |
58 | |
59 #ifdef SOLARIS | |
60 #include <sys/trap.h> | |
61 #include <sys/regset.h> | |
62 #include <sys/procset.h> | |
63 #include <ucontext.h> | |
64 #include <setjmp.h> | |
65 #endif // SOLARIS | |
66 | |
67 # ifdef SOLARIS_MUTATOR_LIBTHREAD | |
68 # include <sys/procfs.h> | |
69 # endif | |
70 | |
3960 | 71 #if defined(LINUX) || defined(_ALLBSD_SOURCE) |
2447 | 72 #ifndef __STDC_LIMIT_MACROS |
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73 #define __STDC_LIMIT_MACROS |
2447 | 74 #endif // __STDC_LIMIT_MACROS |
0 | 75 #include <inttypes.h> |
76 #include <signal.h> | |
3960 | 77 #ifndef __OpenBSD__ |
0 | 78 #include <ucontext.h> |
3960 | 79 #endif |
80 #ifdef __APPLE__ | |
81 #include <AvailabilityMacros.h> | |
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82 #include <mach/mach.h> |
3960 | 83 #endif |
0 | 84 #include <sys/time.h> |
3960 | 85 #endif // LINUX || _ALLBSD_SOURCE |
0 | 86 |
87 // 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures | |
88 // When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in | |
89 // system header files. On 32-bit architectures, there is no problem. | |
90 // On 64-bit architectures, defining NULL as a 32-bit constant can cause | |
91 // problems with varargs functions: C++ integral promotion rules say for | |
92 // varargs, we pass the argument 0 as an int. So, if NULL was passed to a | |
93 // varargs function it will remain 32-bits. Depending on the calling | |
94 // convention of the machine, if the argument is passed on the stack then | |
95 // only 32-bits of the "NULL" pointer may be initialized to zero. The | |
96 // other 32-bits will be garbage. If the varargs function is expecting a | |
97 // pointer when it extracts the argument, then we have a problem. | |
98 // | |
99 // Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0. | |
100 // | |
101 // Note: this fix doesn't work well on Linux because NULL will be overwritten | |
102 // whenever a system header file is included. Linux handles NULL correctly | |
103 // through a special type '__null'. | |
104 #ifdef SOLARIS | |
105 #ifdef _LP64 | |
106 #undef NULL | |
107 #define NULL 0L | |
108 #else | |
109 #ifndef NULL | |
110 #define NULL 0 | |
111 #endif | |
112 #endif | |
113 #endif | |
114 | |
115 // NULL vs NULL_WORD: | |
116 // On Linux NULL is defined as a special type '__null'. Assigning __null to | |
117 // integer variable will cause gcc warning. Use NULL_WORD in places where a | |
118 // pointer is stored as integer value. On some platforms, sizeof(intptr_t) > | |
119 // sizeof(void*), so here we want something which is integer type, but has the | |
120 // same size as a pointer. | |
3960 | 121 #ifdef __GNUC__ |
0 | 122 #ifdef _LP64 |
123 #define NULL_WORD 0L | |
124 #else | |
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125 // Cast 0 to intptr_t rather than int32_t since they are not the same type |
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126 // on platforms such as Mac OS X. |
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127 #define NULL_WORD ((intptr_t)0) |
0 | 128 #endif |
129 #else | |
130 #define NULL_WORD NULL | |
131 #endif | |
132 | |
3960 | 133 #if !defined(LINUX) && !defined(_ALLBSD_SOURCE) |
0 | 134 // Compiler-specific primitive types |
135 typedef unsigned short uint16_t; | |
136 #ifndef _UINT32_T | |
137 #define _UINT32_T | |
138 typedef unsigned int uint32_t; | |
139 #endif // _UINT32_T | |
140 | |
141 #if !defined(_SYS_INT_TYPES_H) | |
142 #ifndef _UINT64_T | |
143 #define _UINT64_T | |
144 typedef unsigned long long uint64_t; | |
145 #endif // _UINT64_T | |
146 // %%%% how to access definition of intptr_t portably in 5.5 onward? | |
147 typedef int intptr_t; | |
148 typedef unsigned int uintptr_t; | |
149 // If this gets an error, figure out a symbol XXX that implies the | |
150 // prior definition of intptr_t, and add "&& !defined(XXX)" above. | |
151 #endif // _SYS_INT_TYPES_H | |
152 | |
3960 | 153 #endif // !LINUX && !_ALLBSD_SOURCE |
0 | 154 |
155 // Additional Java basic types | |
156 | |
157 typedef uint8_t jubyte; | |
158 typedef uint16_t jushort; | |
159 typedef uint32_t juint; | |
160 typedef uint64_t julong; | |
161 | |
162 | |
163 //---------------------------------------------------------------------------------------------------- | |
164 // Constant for jlong (specifying an long long canstant is C++ compiler specific) | |
165 | |
166 // Build a 64bit integer constant | |
167 #define CONST64(x) (x ## LL) | |
168 #define UCONST64(x) (x ## ULL) | |
169 | |
170 const jlong min_jlong = CONST64(0x8000000000000000); | |
171 const jlong max_jlong = CONST64(0x7fffffffffffffff); | |
172 | |
173 | |
174 #ifdef SOLARIS | |
175 //---------------------------------------------------------------------------------------------------- | |
176 // ANSI C++ fixes | |
177 // NOTE:In the ANSI committee's continuing attempt to make each version | |
178 // of C++ incompatible with the previous version, you can no longer cast | |
179 // pointers to functions without specifying linkage unless you want to get | |
180 // warnings. | |
181 // | |
182 // This also means that pointers to functions can no longer be "hidden" | |
183 // in opaque types like void * because at the invokation point warnings | |
184 // will be generated. While this makes perfect sense from a type safety | |
185 // point of view it causes a lot of warnings on old code using C header | |
186 // files. Here are some typedefs to make the job of silencing warnings | |
187 // a bit easier. | |
188 // | |
189 // The final kick in the teeth is that you can only have extern "C" linkage | |
190 // specified at file scope. So these typedefs are here rather than in the | |
191 // .hpp for the class (os:Solaris usually) that needs them. | |
192 | |
193 extern "C" { | |
194 typedef int (*int_fnP_thread_t_iP_uP_stack_tP_gregset_t)(thread_t, int*, unsigned *, stack_t*, gregset_t); | |
195 typedef int (*int_fnP_thread_t_i_gregset_t)(thread_t, int, gregset_t); | |
196 typedef int (*int_fnP_thread_t_i)(thread_t, int); | |
197 typedef int (*int_fnP_thread_t)(thread_t); | |
198 | |
199 typedef int (*int_fnP_cond_tP_mutex_tP_timestruc_tP)(cond_t *cv, mutex_t *mx, timestruc_t *abst); | |
200 typedef int (*int_fnP_cond_tP_mutex_tP)(cond_t *cv, mutex_t *mx); | |
201 | |
202 // typedef for missing API in libc | |
203 typedef int (*int_fnP_mutex_tP_i_vP)(mutex_t *, int, void *); | |
204 typedef int (*int_fnP_mutex_tP)(mutex_t *); | |
205 typedef int (*int_fnP_cond_tP_i_vP)(cond_t *cv, int scope, void *arg); | |
206 typedef int (*int_fnP_cond_tP)(cond_t *cv); | |
207 }; | |
208 #endif // SOLARIS | |
209 | |
210 //---------------------------------------------------------------------------------------------------- | |
211 // Debugging | |
212 | |
213 #define DEBUG_EXCEPTION ::abort(); | |
214 | |
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215 #ifdef ARM32 |
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216 #ifdef SOLARIS |
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217 #define BREAKPOINT __asm__ volatile (".long 0xe1200070") |
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218 #else |
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219 #define BREAKPOINT __asm__ volatile (".long 0xe7f001f0") |
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220 #endif |
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221 #else |
0 | 222 extern "C" void breakpoint(); |
223 #define BREAKPOINT ::breakpoint() | |
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224 #endif |
0 | 225 |
226 // checking for nanness | |
227 #ifdef SOLARIS | |
228 #ifdef SPARC | |
229 inline int g_isnan(float f) { return isnanf(f); } | |
230 #else | |
231 // isnanf() broken on Intel Solaris use isnand() | |
232 inline int g_isnan(float f) { return isnand(f); } | |
233 #endif | |
234 inline int g_isnan(double f) { return isnand(f); } | |
3960 | 235 #elif defined(__APPLE__) |
236 inline int g_isnan(double f) { return isnan(f); } | |
237 #elif defined(LINUX) || defined(_ALLBSD_SOURCE) | |
0 | 238 inline int g_isnan(float f) { return isnanf(f); } |
239 inline int g_isnan(double f) { return isnan(f); } | |
240 #else | |
241 #error "missing platform-specific definition here" | |
242 #endif | |
243 | |
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244 // GCC 4.3 does not allow 0.0/0.0 to produce a NAN value |
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245 #if (__GNUC__ == 4) && (__GNUC_MINOR__ > 2) |
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246 #define CAN_USE_NAN_DEFINE 1 |
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247 #endif |
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248 |
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249 |
0 | 250 // Checking for finiteness |
251 | |
252 inline int g_isfinite(jfloat f) { return finite(f); } | |
253 inline int g_isfinite(jdouble f) { return finite(f); } | |
254 | |
255 | |
256 // Wide characters | |
257 | |
258 inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); } | |
259 | |
260 | |
261 // Portability macros | |
262 #define PRAGMA_INTERFACE #pragma interface | |
263 #define PRAGMA_IMPLEMENTATION #pragma implementation | |
264 #define VALUE_OBJ_CLASS_SPEC | |
265 | |
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266 #ifndef ATTRIBUTE_PRINTF |
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267 // Diagnostic pragmas like the ones defined below in PRAGMA_FORMAT_NONLITERAL_IGNORED |
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268 // were only introduced in GCC 4.2. Because we have no other possibility to ignore |
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269 // these warnings for older versions of GCC, we simply don't decorate our printf-style |
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270 // functions with __attribute__(format) in that case. |
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271 #if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 2)) || (__GNUC__ > 4) |
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272 #define ATTRIBUTE_PRINTF(fmt,vargs) __attribute__((format(printf, fmt, vargs))) |
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273 #else |
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274 #define ATTRIBUTE_PRINTF(fmt,vargs) |
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275 #endif |
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276 #endif |
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277 |
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278 #define PRAGMA_FORMAT_NONLITERAL_IGNORED _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"") \ |
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279 _Pragma("GCC diagnostic ignored \"-Wformat-security\"") |
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280 #define PRAGMA_FORMAT_IGNORED _Pragma("GCC diagnostic ignored \"-Wformat\"") |
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281 |
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282 #if defined(__clang_major__) && \ |
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283 (__clang_major__ >= 4 || \ |
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284 (__clang_major__ >= 3 && __clang_minor__ >= 1)) || \ |
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285 ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4) |
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286 // Tested to work with clang version 3.1 and better. |
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287 #define PRAGMA_DIAG_PUSH _Pragma("GCC diagnostic push") |
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288 #define PRAGMA_DIAG_POP _Pragma("GCC diagnostic pop") |
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289 #define PRAGMA_FORMAT_NONLITERAL_IGNORED_EXTERNAL |
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290 #define PRAGMA_FORMAT_NONLITERAL_IGNORED_INTERNAL PRAGMA_FORMAT_NONLITERAL_IGNORED |
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291 |
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292 // Hack to deal with gcc yammering about non-security format stuff |
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293 #else |
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294 // Old versions of gcc don't do push/pop, also do not cope with this pragma within a function |
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295 // One method does so much varied printing that it is decorated with both internal and external |
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296 // versions of the macro-pragma to obtain better checking with newer compilers. |
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297 #define PRAGMA_DIAG_PUSH |
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298 #define PRAGMA_DIAG_POP |
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299 #define PRAGMA_FORMAT_NONLITERAL_IGNORED_EXTERNAL PRAGMA_FORMAT_NONLITERAL_IGNORED |
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300 #define PRAGMA_FORMAT_NONLITERAL_IGNORED_INTERNAL |
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301 #endif |
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302 |
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303 #ifndef __clang_major__ |
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304 #define PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC _Pragma("GCC diagnostic ignored \"-Wformat\"") _Pragma("GCC diagnostic error \"-Wformat-nonliteral\"") _Pragma("GCC diagnostic error \"-Wformat-security\"") |
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305 #endif |
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306 |
0 | 307 #if (__GNUC__ == 2) && (__GNUC_MINOR__ < 95) |
308 #define TEMPLATE_TABLE_BUG | |
309 #endif | |
310 #if (__GNUC__ == 2) && (__GNUC_MINOR__ >= 96) | |
311 #define CONST_SDM_BUG | |
312 #endif | |
313 | |
314 // Formatting. | |
315 #ifdef _LP64 | |
316 #define FORMAT64_MODIFIER "l" | |
317 #else // !_LP64 | |
318 #define FORMAT64_MODIFIER "ll" | |
319 #endif // _LP64 | |
320 | |
321 // HACK: gcc warns about applying offsetof() to non-POD object or calculating | |
322 // offset directly when base address is NULL. Use 16 to get around the | |
323 // warning. gcc-3.4 has an option -Wno-invalid-offsetof to suppress | |
324 // this warning. | |
325 #define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16) | |
326 | |
327 #ifdef offsetof | |
328 # undef offsetof | |
329 #endif | |
330 #define offsetof(klass,field) offset_of(klass,field) | |
1972 | 331 |
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332 #if defined(_LP64) && defined(__APPLE__) |
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333 #define JLONG_FORMAT "%ld" |
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334 #endif // _LP64 && __APPLE__ |
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335 |
1972 | 336 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_HPP |