1 /* 2 * Copyright (c) 1998, 2014, 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_GCC_HPP 26 #define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_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 <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 #ifndef FP_PZERO 48 // Linux doesn't have positive/negative zero 49 #define FP_PZERO FP_ZERO 50 #endif 51 #if (!defined fpclass) && ((!defined SPARC) || (!defined SOLARIS)) 52 #define fpclass fpclassify 53 #endif 54 55 #include <time.h> 56 #include <fcntl.h> 57 #include <dlfcn.h> 58 #include <pthread.h> 59 60 #ifdef SOLARIS 61 #include <thread.h> 62 #endif // SOLARIS 63 64 #include <limits.h> 65 #include <errno.h> 66 67 #ifdef SOLARIS 68 #include <sys/trap.h> 69 #include <sys/regset.h> 70 #include <sys/procset.h> 71 #include <ucontext.h> 72 #include <setjmp.h> 73 #endif // SOLARIS 74 75 # ifdef SOLARIS_MUTATOR_LIBTHREAD 76 # include <sys/procfs.h> 77 # endif 78 79 #if defined(LINUX) || defined(_ALLBSD_SOURCE) 80 #ifndef __STDC_LIMIT_MACROS 81 #define __STDC_LIMIT_MACROS 82 #endif // __STDC_LIMIT_MACROS 83 #include <inttypes.h> 84 #include <signal.h> 85 #ifndef __OpenBSD__ 86 #include <ucontext.h> 87 #endif 88 #ifdef __APPLE__ 89 #include <AvailabilityMacros.h> 90 #include <mach/mach.h> 91 #endif 92 #include <sys/time.h> 93 #endif // LINUX || _ALLBSD_SOURCE 94 95 // 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures 96 // When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in 97 // system header files. On 32-bit architectures, there is no problem. 98 // On 64-bit architectures, defining NULL as a 32-bit constant can cause 99 // problems with varargs functions: C++ integral promotion rules say for 100 // varargs, we pass the argument 0 as an int. So, if NULL was passed to a 101 // varargs function it will remain 32-bits. Depending on the calling 102 // convention of the machine, if the argument is passed on the stack then 103 // only 32-bits of the "NULL" pointer may be initialized to zero. The 104 // other 32-bits will be garbage. If the varargs function is expecting a 105 // pointer when it extracts the argument, then we have a problem. 106 // 107 // Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0. 108 // 109 // Note: this fix doesn't work well on Linux because NULL will be overwritten 110 // whenever a system header file is included. Linux handles NULL correctly 111 // through a special type '__null'. 112 #ifdef SOLARIS 113 #ifdef _LP64 114 #undef NULL 115 #define NULL 0L 116 #else 117 #ifndef NULL 118 #define NULL 0 119 #endif 120 #endif 121 #endif 122 123 // NULL vs NULL_WORD: 124 // On Linux NULL is defined as a special type '__null'. Assigning __null to 125 // integer variable will cause gcc warning. Use NULL_WORD in places where a 126 // pointer is stored as integer value. On some platforms, sizeof(intptr_t) > 127 // sizeof(void*), so here we want something which is integer type, but has the 128 // same size as a pointer. 129 #ifdef __GNUC__ 130 #ifdef _LP64 131 #define NULL_WORD 0L 132 #else 133 // Cast 0 to intptr_t rather than int32_t since they are not the same type 134 // on platforms such as Mac OS X. 135 #define NULL_WORD ((intptr_t)0) 136 #endif 137 #else 138 #define NULL_WORD NULL 139 #endif 140 141 #if !defined(LINUX) && !defined(_ALLBSD_SOURCE) 142 // Compiler-specific primitive types 143 typedef unsigned short uint16_t; 144 #ifndef _UINT32_T 145 #define _UINT32_T 146 typedef unsigned int uint32_t; 147 #endif // _UINT32_T 148 149 #if !defined(_SYS_INT_TYPES_H) 150 #ifndef _UINT64_T 151 #define _UINT64_T 152 typedef unsigned long long uint64_t; 153 #endif // _UINT64_T 154 // %%%% how to access definition of intptr_t portably in 5.5 onward? 155 typedef int intptr_t; 156 typedef unsigned int uintptr_t; 157 // If this gets an error, figure out a symbol XXX that implies the 158 // prior definition of intptr_t, and add "&& !defined(XXX)" above. 159 #endif // _SYS_INT_TYPES_H 160 161 #endif // !LINUX && !_ALLBSD_SOURCE 162 163 // Additional Java basic types 164 165 typedef uint8_t jubyte; 166 typedef uint16_t jushort; 167 typedef uint32_t juint; 168 typedef uint64_t julong; 169 170 171 //---------------------------------------------------------------------------------------------------- 172 // Constant for jlong (specifying an long long canstant is C++ compiler specific) 173 174 // Build a 64bit integer constant 175 #define CONST64(x) (x ## LL) 176 #define UCONST64(x) (x ## ULL) 177 178 const jlong min_jlong = CONST64(0x8000000000000000); 179 const jlong max_jlong = CONST64(0x7fffffffffffffff); 180 181 182 #ifdef SOLARIS 183 //---------------------------------------------------------------------------------------------------- 184 // ANSI C++ fixes 185 // NOTE:In the ANSI committee's continuing attempt to make each version 186 // of C++ incompatible with the previous version, you can no longer cast 187 // pointers to functions without specifying linkage unless you want to get 188 // warnings. 189 // 190 // This also means that pointers to functions can no longer be "hidden" 191 // in opaque types like void * because at the invokation point warnings 192 // will be generated. While this makes perfect sense from a type safety 193 // point of view it causes a lot of warnings on old code using C header 194 // files. Here are some typedefs to make the job of silencing warnings 195 // a bit easier. 196 // 197 // The final kick in the teeth is that you can only have extern "C" linkage 198 // specified at file scope. So these typedefs are here rather than in the 199 // .hpp for the class (os:Solaris usually) that needs them. 200 201 extern "C" { 202 typedef int (*int_fnP_thread_t_iP_uP_stack_tP_gregset_t)(thread_t, int*, unsigned *, stack_t*, gregset_t); 203 typedef int (*int_fnP_thread_t_i_gregset_t)(thread_t, int, gregset_t); 204 typedef int (*int_fnP_thread_t_i)(thread_t, int); 205 typedef int (*int_fnP_thread_t)(thread_t); 206 207 typedef int (*int_fnP_cond_tP_mutex_tP_timestruc_tP)(cond_t *cv, mutex_t *mx, timestruc_t *abst); 208 typedef int (*int_fnP_cond_tP_mutex_tP)(cond_t *cv, mutex_t *mx); 209 210 // typedef for missing API in libc 211 typedef int (*int_fnP_mutex_tP_i_vP)(mutex_t *, int, void *); 212 typedef int (*int_fnP_mutex_tP)(mutex_t *); 213 typedef int (*int_fnP_cond_tP_i_vP)(cond_t *cv, int scope, void *arg); 214 typedef int (*int_fnP_cond_tP)(cond_t *cv); 215 }; 216 #endif // SOLARIS 217 218 //---------------------------------------------------------------------------------------------------- 219 // Debugging 220 221 #define DEBUG_EXCEPTION ::abort(); 222 223 #ifdef ARM32 224 #ifdef SOLARIS 225 #define BREAKPOINT __asm__ volatile (".long 0xe1200070") 226 #else 227 #define BREAKPOINT __asm__ volatile (".long 0xe7f001f0") 228 #endif 229 #else 230 extern "C" void breakpoint(); 231 #define BREAKPOINT ::breakpoint() 232 #endif 233 234 // checking for nanness 235 #ifdef SOLARIS 236 #ifdef SPARC 237 inline int g_isnan(float f) { return isnanf(f); } 238 #else 239 // isnanf() broken on Intel Solaris use isnand() 240 inline int g_isnan(float f) { return isnand(f); } 241 #endif 242 inline int g_isnan(double f) { return isnand(f); } 243 #elif defined(__APPLE__) 244 inline int g_isnan(double f) { return isnan(f); } 245 #elif defined(LINUX) || defined(_ALLBSD_SOURCE) 246 inline int g_isnan(float f) { return isnanf(f); } 247 inline int g_isnan(double f) { return isnan(f); } 248 #else 249 #error "missing platform-specific definition here" 250 #endif 251 252 // GCC 4.3 does not allow 0.0/0.0 to produce a NAN value 253 #if (__GNUC__ == 4) && (__GNUC_MINOR__ > 2) 254 #define CAN_USE_NAN_DEFINE 1 255 #endif 256 257 258 // Checking for finiteness 259 260 inline int g_isfinite(jfloat f) { return finite(f); } 261 inline int g_isfinite(jdouble f) { return finite(f); } 262 263 264 // Wide characters 265 266 inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); } 267 268 269 // Portability macros 270 #define PRAGMA_INTERFACE #pragma interface 271 #define PRAGMA_IMPLEMENTATION #pragma implementation 272 #define VALUE_OBJ_CLASS_SPEC 273 274 // Diagnostic pragmas like the ones defined below in PRAGMA_FORMAT_NONLITERAL_IGNORED 275 // were only introduced in GCC 4.2. Because we have no other possibility to ignore 276 // these warnings for older versions of GCC, we simply don't decorate our printf-style 277 // functions with __attribute__(format) in that case. 278 #if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 2)) || (__GNUC__ > 4) 279 #ifndef ATTRIBUTE_PRINTF 280 #define ATTRIBUTE_PRINTF(fmt,vargs) __attribute__((format(printf, fmt, vargs))) 281 #endif 282 #ifndef ATTRIBUTE_SCANF 283 #define ATTRIBUTE_SCANF(fmt,vargs) __attribute__((format(scanf, fmt, vargs))) 284 #endif 285 #endif 286 287 #define PRAGMA_FORMAT_NONLITERAL_IGNORED _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"") \ 288 _Pragma("GCC diagnostic ignored \"-Wformat-security\"") 289 #define PRAGMA_FORMAT_IGNORED _Pragma("GCC diagnostic ignored \"-Wformat\"") 290 291 #if defined(__clang_major__) && \ 292 (__clang_major__ >= 4 || \ 293 (__clang_major__ >= 3 && __clang_minor__ >= 1)) || \ 294 ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4) 295 // Tested to work with clang version 3.1 and better. 296 #define PRAGMA_DIAG_PUSH _Pragma("GCC diagnostic push") 297 #define PRAGMA_DIAG_POP _Pragma("GCC diagnostic pop") 298 #define PRAGMA_FORMAT_NONLITERAL_IGNORED_EXTERNAL 299 #define PRAGMA_FORMAT_NONLITERAL_IGNORED_INTERNAL PRAGMA_FORMAT_NONLITERAL_IGNORED 300 301 // Hack to deal with gcc yammering about non-security format stuff 302 #else 303 // Old versions of gcc don't do push/pop, also do not cope with this pragma within a function 304 // One method does so much varied printing that it is decorated with both internal and external 305 // versions of the macro-pragma to obtain better checking with newer compilers. 306 #define PRAGMA_DIAG_PUSH 307 #define PRAGMA_DIAG_POP 308 #define PRAGMA_FORMAT_NONLITERAL_IGNORED_EXTERNAL PRAGMA_FORMAT_NONLITERAL_IGNORED 309 #define PRAGMA_FORMAT_NONLITERAL_IGNORED_INTERNAL 310 #endif 311 312 #ifndef __clang_major__ 313 #define PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC _Pragma("GCC diagnostic ignored \"-Wformat\"") _Pragma("GCC diagnostic error \"-Wformat-nonliteral\"") _Pragma("GCC diagnostic error \"-Wformat-security\"") 314 #endif 315 316 #if (__GNUC__ == 2) && (__GNUC_MINOR__ < 95) 317 #define TEMPLATE_TABLE_BUG 318 #endif 319 #if (__GNUC__ == 2) && (__GNUC_MINOR__ >= 96) 320 #define CONST_SDM_BUG 321 #endif 322 323 // Formatting. 324 #ifdef _LP64 325 #define FORMAT64_MODIFIER "l" 326 #else // !_LP64 327 #define FORMAT64_MODIFIER "ll" 328 #endif // _LP64 329 330 // HACK: gcc warns about applying offsetof() to non-POD object or calculating 331 // offset directly when base address is NULL. Use 16 to get around the 332 // warning. gcc-3.4 has an option -Wno-invalid-offsetof to suppress 333 // this warning. 334 #define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16) 335 336 #ifdef offsetof 337 # undef offsetof 338 #endif 339 #define offsetof(klass,field) offset_of(klass,field) 340 341 #if defined(_LP64) && defined(__APPLE__) 342 #define JLONG_FORMAT "%ld" 343 #endif // _LP64 && __APPLE__ 344 345 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_HPP