1 /* 2 * Copyright (c) 1997, 2011, 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_SPARCWORKS_HPP 26 #define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_SPARCWORKS_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 35 # include <ctype.h> 36 # include <dirent.h> 37 # include <string.h> 38 # include <strings.h> // for bsd'isms 39 # include <stdarg.h> 40 # include <stddef.h> // for offsetof 41 # include <stdio.h> 42 # include <stdlib.h> 43 # include <wchar.h> 44 # include <stdarg.h> 45 #ifdef SOLARIS 46 # include <ieeefp.h> 47 #endif 48 # include <math.h> 49 #ifdef LINUX 50 #ifndef FP_PZERO 51 // Linux doesn't have positive/negative zero 52 #define FP_PZERO FP_ZERO 53 #endif 54 #ifndef fpclass 55 #define fpclass fpclassify 56 #endif 57 #endif 58 # include <time.h> 59 # include <fcntl.h> 60 # include <dlfcn.h> 61 # include <pthread.h> 62 #ifdef SOLARIS 63 # include <thread.h> 64 #endif 65 # include <limits.h> 66 # include <errno.h> 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 74 # ifdef SOLARIS_MUTATOR_LIBTHREAD 75 # include <sys/procfs.h> 76 # endif 77 78 #include <inttypes.h> 79 80 // Solaris 8 doesn't provide definitions of these 81 #ifdef SOLARIS 82 #ifndef PRIdPTR 83 #if defined(_LP64) 84 #define PRIdPTR "ld" 85 #define PRIuPTR "lu" 86 #define PRIxPTR "lx" 87 #else 88 #define PRIdPTR "d" 89 #define PRIuPTR "u" 90 #define PRIxPTR "x" 91 #endif 92 #endif 93 #endif 94 95 #ifdef LINUX 96 # include <signal.h> 97 # include <ucontext.h> 98 # include <sys/time.h> 99 #endif 100 101 102 // 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures 103 // When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in 104 // system header files. On 32-bit architectures, there is no problem. 105 // On 64-bit architectures, defining NULL as a 32-bit constant can cause 106 // problems with varargs functions: C++ integral promotion rules say for 107 // varargs, we pass the argument 0 as an int. So, if NULL was passed to a 108 // varargs function it will remain 32-bits. Depending on the calling 109 // convention of the machine, if the argument is passed on the stack then 110 // only 32-bits of the "NULL" pointer may be initialized to zero. The 111 // other 32-bits will be garbage. If the varargs function is expecting a 112 // pointer when it extracts the argument, then we have a problem. 113 // 114 // Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0. 115 // 116 // Note: this fix doesn't work well on Linux because NULL will be overwritten 117 // whenever a system header file is included. Linux handles NULL correctly 118 // through a special type '__null'. 119 #ifdef SOLARIS 120 #ifdef _LP64 121 #undef NULL 122 #define NULL 0L 123 #else 124 #ifndef NULL 125 #define NULL 0 126 #endif 127 #endif 128 #endif 129 130 // NULL vs NULL_WORD: 131 // On Linux NULL is defined as a special type '__null'. Assigning __null to 132 // integer variable will cause gcc warning. Use NULL_WORD in places where a 133 // pointer is stored as integer value. On some platforms, sizeof(intptr_t) > 134 // sizeof(void*), so here we want something which is integer type, but has the 135 // same size as a pointer. 136 #ifdef LINUX 137 #ifdef _LP64 138 #define NULL_WORD 0L 139 #else 140 // Cast 0 to intptr_t rather than int32_t since they are not the same type 141 // on some platforms. 142 #define NULL_WORD ((intptr_t)0) 143 #endif 144 #else 145 #define NULL_WORD NULL 146 #endif 147 148 #ifndef LINUX 149 // Compiler-specific primitive types 150 typedef unsigned short uint16_t; 151 #ifndef _UINT32_T 152 #define _UINT32_T 153 typedef unsigned int uint32_t; 154 #endif 155 #if !defined(_SYS_INT_TYPES_H) 156 #ifndef _UINT64_T 157 #define _UINT64_T 158 typedef unsigned long long uint64_t; 159 #endif 160 // %%%% how to access definition of intptr_t portably in 5.5 onward? 161 typedef int intptr_t; 162 typedef unsigned int uintptr_t; 163 // If this gets an error, figure out a symbol XXX that implies the 164 // prior definition of intptr_t, and add "&& !defined(XXX)" above. 165 #endif 166 #endif 167 168 // On solaris 8, UINTPTR_MAX is defined as empty. 169 // Everywhere else it's an actual value. 170 #if UINTPTR_MAX - 1 == -1 171 #undef UINTPTR_MAX 172 #ifdef _LP64 173 #define UINTPTR_MAX UINT64_MAX 174 #else 175 #define UINTPTR_MAX UINT32_MAX 176 #endif /* ifdef _LP64 */ 177 #endif 178 179 // Additional Java basic types 180 181 typedef unsigned char jubyte; 182 typedef unsigned short jushort; 183 typedef unsigned int juint; 184 typedef unsigned long long julong; 185 186 //---------------------------------------------------------------------------------------------------- 187 // Special (possibly not-portable) casts 188 // Cast floats into same-size integers and vice-versa w/o changing bit-pattern 189 190 inline jint jint_cast (jfloat x) { return *(jint* )&x; } 191 inline jlong jlong_cast (jdouble x) { return *(jlong* )&x; } 192 193 inline jfloat jfloat_cast (jint x) { return *(jfloat* )&x; } 194 inline jdouble jdouble_cast(jlong x) { return *(jdouble*)&x; } 195 196 //---------------------------------------------------------------------------------------------------- 197 // Constant for jlong (specifying an long long constant is C++ compiler specific) 198 199 // Build a 64bit integer constant 200 #define CONST64(x) (x ## LL) 201 #define UCONST64(x) (x ## ULL) 202 203 const jlong min_jlong = CONST64(0x8000000000000000); 204 const jlong max_jlong = CONST64(0x7fffffffffffffff); 205 206 #ifdef SOLARIS 207 //---------------------------------------------------------------------------------------------------- 208 // ANSI C++ fixes 209 // NOTE:In the ANSI committee's continuing attempt to make each version 210 // of C++ incompatible with the previous version, you can no longer cast 211 // pointers to functions without specifying linkage unless you want to get 212 // warnings. 213 // 214 // This also means that pointers to functions can no longer be "hidden" 215 // in opaque types like void * because at the invokation point warnings 216 // will be generated. While this makes perfect sense from a type safety 217 // point of view it causes a lot of warnings on old code using C header 218 // files. Here are some typedefs to make the job of silencing warnings 219 // a bit easier. 220 // 221 // The final kick in the teeth is that you can only have extern "C" linkage 222 // specified at file scope. So these typedefs are here rather than in the 223 // .hpp for the class (os:Solaris usually) that needs them. 224 225 extern "C" { 226 typedef int (*int_fnP_thread_t_iP_uP_stack_tP_gregset_t)(thread_t, int*, unsigned *, stack_t*, gregset_t); 227 typedef int (*int_fnP_thread_t_i_gregset_t)(thread_t, int, gregset_t); 228 typedef int (*int_fnP_thread_t_i)(thread_t, int); 229 typedef int (*int_fnP_thread_t)(thread_t); 230 231 typedef int (*int_fnP_cond_tP_mutex_tP_timestruc_tP)(cond_t *cv, mutex_t *mx, timestruc_t *abst); 232 typedef int (*int_fnP_cond_tP_mutex_tP)(cond_t *cv, mutex_t *mx); 233 234 // typedef for missing API in libc 235 typedef int (*int_fnP_mutex_tP_i_vP)(mutex_t *, int, void *); 236 typedef int (*int_fnP_mutex_tP)(mutex_t *); 237 typedef int (*int_fnP_cond_tP_i_vP)(cond_t *cv, int scope, void *arg); 238 typedef int (*int_fnP_cond_tP)(cond_t *cv); 239 }; 240 #endif 241 242 //---------------------------------------------------------------------------------------------------- 243 // Debugging 244 245 #define DEBUG_EXCEPTION ::abort(); 246 247 extern "C" void breakpoint(); 248 #define BREAKPOINT ::breakpoint() 249 250 // checking for nanness 251 #ifdef SOLARIS 252 #ifdef SPARC 253 inline int g_isnan(float f) { return isnanf(f); } 254 #else 255 // isnanf() broken on Intel Solaris use isnand() 256 inline int g_isnan(float f) { return isnand(f); } 257 #endif 258 259 inline int g_isnan(double f) { return isnand(f); } 260 #elif LINUX 261 inline int g_isnan(float f) { return isnanf(f); } 262 inline int g_isnan(double f) { return isnan(f); } 263 #else 264 #error "missing platform-specific definition here" 265 #endif 266 267 // Checking for finiteness 268 269 inline int g_isfinite(jfloat f) { return finite(f); } 270 inline int g_isfinite(jdouble f) { return finite(f); } 271 272 273 // Wide characters 274 275 inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); } 276 277 278 // Misc 279 // NOTE: This one leads to an infinite recursion on Linux 280 #ifndef LINUX 281 int local_vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr); 282 #define vsnprintf local_vsnprintf 283 #endif 284 285 // Portability macros 286 #define PRAGMA_INTERFACE 287 #define PRAGMA_IMPLEMENTATION 288 #define PRAGMA_IMPLEMENTATION_(arg) 289 #define VALUE_OBJ_CLASS_SPEC : public _ValueObj 290 291 // Formatting. 292 #ifdef _LP64 293 #define FORMAT64_MODIFIER "l" 294 #else // !_LP64 295 #define FORMAT64_MODIFIER "ll" 296 #endif // _LP64 297 298 #define offset_of(klass,field) offsetof(klass,field) 299 300 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_SPARCWORKS_HPP