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 // Special (possibly not-portable) casts 172 // Cast floats into same-size integers and vice-versa w/o changing bit-pattern 173 // %%%%%% These seem like standard C++ to me--how about factoring them out? - Ungar 174 175 inline jint jint_cast (jfloat x) { return *(jint* )&x; } 176 inline jlong jlong_cast (jdouble x) { return *(jlong* )&x; } 177 inline julong julong_cast (jdouble x) { return *(julong* )&x; } 178 179 inline jfloat jfloat_cast (jint x) { return *(jfloat* )&x; } 180 inline jdouble jdouble_cast(jlong x) { return *(jdouble*)&x; } 181 182 //---------------------------------------------------------------------------------------------------- 183 // Constant for jlong (specifying an long long canstant is C++ compiler specific) 184 185 // Build a 64bit integer constant 186 #define CONST64(x) (x ## LL) 187 #define UCONST64(x) (x ## ULL) 188 189 const jlong min_jlong = CONST64(0x8000000000000000); 190 const jlong max_jlong = CONST64(0x7fffffffffffffff); 191 192 193 #ifdef SOLARIS 194 //---------------------------------------------------------------------------------------------------- 195 // ANSI C++ fixes 196 // NOTE:In the ANSI committee's continuing attempt to make each version 197 // of C++ incompatible with the previous version, you can no longer cast 198 // pointers to functions without specifying linkage unless you want to get 199 // warnings. 200 // 201 // This also means that pointers to functions can no longer be "hidden" 202 // in opaque types like void * because at the invokation point warnings 203 // will be generated. While this makes perfect sense from a type safety 204 // point of view it causes a lot of warnings on old code using C header 205 // files. Here are some typedefs to make the job of silencing warnings 206 // a bit easier. 207 // 208 // The final kick in the teeth is that you can only have extern "C" linkage 209 // specified at file scope. So these typedefs are here rather than in the 210 // .hpp for the class (os:Solaris usually) that needs them. 211 212 extern "C" { 213 typedef int (*int_fnP_thread_t_iP_uP_stack_tP_gregset_t)(thread_t, int*, unsigned *, stack_t*, gregset_t); 214 typedef int (*int_fnP_thread_t_i_gregset_t)(thread_t, int, gregset_t); 215 typedef int (*int_fnP_thread_t_i)(thread_t, int); 216 typedef int (*int_fnP_thread_t)(thread_t); 217 218 typedef int (*int_fnP_cond_tP_mutex_tP_timestruc_tP)(cond_t *cv, mutex_t *mx, timestruc_t *abst); 219 typedef int (*int_fnP_cond_tP_mutex_tP)(cond_t *cv, mutex_t *mx); 220 221 // typedef for missing API in libc 222 typedef int (*int_fnP_mutex_tP_i_vP)(mutex_t *, int, void *); 223 typedef int (*int_fnP_mutex_tP)(mutex_t *); 224 typedef int (*int_fnP_cond_tP_i_vP)(cond_t *cv, int scope, void *arg); 225 typedef int (*int_fnP_cond_tP)(cond_t *cv); 226 }; 227 #endif // SOLARIS 228 229 //---------------------------------------------------------------------------------------------------- 230 // Debugging 231 232 #define DEBUG_EXCEPTION ::abort(); 233 234 #ifdef ARM 235 #ifdef SOLARIS 236 #define BREAKPOINT __asm__ volatile (".long 0xe1200070") 237 #else 238 #define BREAKPOINT __asm__ volatile (".long 0xe7f001f0") 239 #endif 240 #else 241 extern "C" void breakpoint(); 242 #define BREAKPOINT ::breakpoint() 243 #endif 244 245 // checking for nanness 246 #ifdef SOLARIS 247 #ifdef SPARC 248 inline int g_isnan(float f) { return isnanf(f); } 249 #else 250 // isnanf() broken on Intel Solaris use isnand() 251 inline int g_isnan(float f) { return isnand(f); } 252 #endif 253 inline int g_isnan(double f) { return isnand(f); } 254 #elif defined(__APPLE__) 255 inline int g_isnan(double f) { return isnan(f); } 256 #elif defined(LINUX) || defined(_ALLBSD_SOURCE) 257 inline int g_isnan(float f) { return isnanf(f); } 258 inline int g_isnan(double f) { return isnan(f); } 259 #else 260 #error "missing platform-specific definition here" 261 #endif 262 263 // GCC 4.3 does not allow 0.0/0.0 to produce a NAN value 264 #if (__GNUC__ == 4) && (__GNUC_MINOR__ > 2) 265 #define CAN_USE_NAN_DEFINE 1 266 #endif 267 268 269 // Checking for finiteness 270 271 inline int g_isfinite(jfloat f) { return finite(f); } 272 inline int g_isfinite(jdouble f) { return finite(f); } 273 274 275 // Wide characters 276 277 inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); } 278 279 280 // Portability macros 281 #define PRAGMA_INTERFACE #pragma interface 282 #define PRAGMA_IMPLEMENTATION #pragma implementation 283 #define VALUE_OBJ_CLASS_SPEC 284 285 #ifndef ATTRIBUTE_PRINTF 286 #define ATTRIBUTE_PRINTF(fmt,vargs) __attribute__((format(printf, fmt, vargs))) 287 #endif 288 289 #define PRAGMA_FORMAT_NONLITERAL_IGNORED _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"") _Pragma("GCC diagnostic ignored \"-Wformat-security\"") 290 #define PRAGMA_FORMAT_IGNORED _Pragma("GCC diagnostic ignored \"-Wformat\"") 291 292 #if defined(__clang_major__) && (__clang_major__ >= 4 || (__clang_major__ >= 3 && __clang_minor__ >= 1)) || (__GNUC__ >= 4) && (__GNUC_MINOR__ >= 6) 293 // Tested to work with clang version 3.1 and better. 294 #define PRAGMA_DIAG_PUSH _Pragma("GCC diagnostic push") 295 #define PRAGMA_DIAG_POP _Pragma("GCC diagnostic pop") 296 #define PRAGMA_FORMAT_NONLITERAL_IGNORED_EXTERNAL 297 #define PRAGMA_FORMAT_NONLITERAL_IGNORED_INTERNAL PRAGMA_FORMAT_NONLITERAL_IGNORED 298 299 // Hack to deal with gcc yammering about non-security format stuff 300 #else 301 // Old versions of gcc don't do push/pop, also do not cope with this pragma within a function 302 // One method does so much varied printing that it is decorated with both internal and external 303 // versions of the macro-pragma to obtain better checking with newer compilers. 304 #define PRAGMA_DIAG_PUSH 305 #define PRAGMA_DIAG_POP 306 #define PRAGMA_FORMAT_NONLITERAL_IGNORED_EXTERNAL PRAGMA_FORMAT_NONLITERAL_IGNORED 307 #define PRAGMA_FORMAT_NONLITERAL_IGNORED_INTERNAL 308 #endif 309 310 #ifndef __clang_major__ 311 #define PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC _Pragma("GCC diagnostic ignored \"-Wformat\"") _Pragma("GCC diagnostic error \"-Wformat-nonliteral\"") _Pragma("GCC diagnostic error \"-Wformat-security\"") 312 #endif 313 314 #if (__GNUC__ == 2) && (__GNUC_MINOR__ < 95) 315 #define TEMPLATE_TABLE_BUG 316 #endif 317 #if (__GNUC__ == 2) && (__GNUC_MINOR__ >= 96) 318 #define CONST_SDM_BUG 319 #endif 320 321 // Formatting. 322 #ifdef _LP64 323 #define FORMAT64_MODIFIER "l" 324 #else // !_LP64 325 #define FORMAT64_MODIFIER "ll" 326 #endif // _LP64 327 328 // HACK: gcc warns about applying offsetof() to non-POD object or calculating 329 // offset directly when base address is NULL. Use 16 to get around the 330 // warning. gcc-3.4 has an option -Wno-invalid-offsetof to suppress 331 // this warning. 332 #define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16) 333 334 #ifdef offsetof 335 # undef offsetof 336 #endif 337 #define offsetof(klass,field) offset_of(klass,field) 338 339 #if defined(_LP64) && defined(__APPLE__) 340 #define JLONG_FORMAT "%ld" 341 #endif // _LP64 && __APPLE__ 342 343 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_HPP