1 /* 2 * Copyright (c) 1997, 2010, 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 #ifdef LINUX 78 # include <inttypes.h> 79 # include <signal.h> 80 # include <ucontext.h> 81 # include <sys/time.h> 82 #endif 83 84 85 // 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures 86 // When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in 87 // system header files. On 32-bit architectures, there is no problem. 88 // On 64-bit architectures, defining NULL as a 32-bit constant can cause 89 // problems with varargs functions: C++ integral promotion rules say for 90 // varargs, we pass the argument 0 as an int. So, if NULL was passed to a 91 // varargs function it will remain 32-bits. Depending on the calling 92 // convention of the machine, if the argument is passed on the stack then 93 // only 32-bits of the "NULL" pointer may be initialized to zero. The 94 // other 32-bits will be garbage. If the varargs function is expecting a 95 // pointer when it extracts the argument, then we have a problem. 96 // 97 // Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0. 98 // 99 // Note: this fix doesn't work well on Linux because NULL will be overwritten 100 // whenever a system header file is included. Linux handles NULL correctly 101 // through a special type '__null'. 102 #ifdef SOLARIS 103 #ifdef _LP64 104 #undef NULL 105 #define NULL 0L 106 #else 107 #ifndef NULL 108 #define NULL 0 109 #endif 110 #endif 111 #endif 112 113 // NULL vs NULL_WORD: 114 // On Linux NULL is defined as a special type '__null'. Assigning __null to 115 // integer variable will cause gcc warning. Use NULL_WORD in places where a 116 // pointer is stored as integer value. On some platforms, sizeof(intptr_t) > 117 // sizeof(void*), so here we want something which is integer type, but has the 118 // same size as a pointer. 119 #ifdef LINUX 120 #ifdef _LP64 121 #define NULL_WORD 0L 122 #else 123 // Cast 0 to intptr_t rather than int32_t since they are not the same type 124 // on some platforms. 125 #define NULL_WORD ((intptr_t)0) 126 #endif 127 #else 128 #define NULL_WORD NULL 129 #endif 130 131 #ifndef LINUX 132 // Compiler-specific primitive types 133 typedef unsigned short uint16_t; 134 #ifndef _UINT32_T 135 #define _UINT32_T 136 typedef unsigned int uint32_t; 137 #endif 138 #if !defined(_SYS_INT_TYPES_H) 139 #ifndef _UINT64_T 140 #define _UINT64_T 141 typedef unsigned long long uint64_t; 142 #endif 143 // %%%% how to access definition of intptr_t portably in 5.5 onward? 144 typedef int intptr_t; 145 typedef unsigned int uintptr_t; 146 // If this gets an error, figure out a symbol XXX that implies the 147 // prior definition of intptr_t, and add "&& !defined(XXX)" above. 148 #endif 149 #endif 150 151 // Additional Java basic types 152 153 typedef unsigned char jubyte; 154 typedef unsigned short jushort; 155 typedef unsigned int juint; 156 typedef unsigned long long julong; 157 158 //---------------------------------------------------------------------------------------------------- 159 // Special (possibly not-portable) casts 160 // Cast floats into same-size integers and vice-versa w/o changing bit-pattern 161 162 inline jint jint_cast (jfloat x) { return *(jint* )&x; } 163 inline jlong jlong_cast (jdouble x) { return *(jlong* )&x; } 164 165 inline jfloat jfloat_cast (jint x) { return *(jfloat* )&x; } 166 inline jdouble jdouble_cast(jlong x) { return *(jdouble*)&x; } 167 168 //---------------------------------------------------------------------------------------------------- 169 // Constant for jlong (specifying an long long constant is C++ compiler specific) 170 171 // Build a 64bit integer constant 172 #define CONST64(x) (x ## LL) 173 #define UCONST64(x) (x ## ULL) 174 175 const jlong min_jlong = CONST64(0x8000000000000000); 176 const jlong max_jlong = CONST64(0x7fffffffffffffff); 177 178 #ifdef SOLARIS 179 //---------------------------------------------------------------------------------------------------- 180 // ANSI C++ fixes 181 // NOTE:In the ANSI committee's continuing attempt to make each version 182 // of C++ incompatible with the previous version, you can no longer cast 183 // pointers to functions without specifying linkage unless you want to get 184 // warnings. 185 // 186 // This also means that pointers to functions can no longer be "hidden" 187 // in opaque types like void * because at the invokation point warnings 188 // will be generated. While this makes perfect sense from a type safety 189 // point of view it causes a lot of warnings on old code using C header 190 // files. Here are some typedefs to make the job of silencing warnings 191 // a bit easier. 192 // 193 // The final kick in the teeth is that you can only have extern "C" linkage 194 // specified at file scope. So these typedefs are here rather than in the 195 // .hpp for the class (os:Solaris usually) that needs them. 196 197 extern "C" { 198 typedef int (*int_fnP_thread_t_iP_uP_stack_tP_gregset_t)(thread_t, int*, unsigned *, stack_t*, gregset_t); 199 typedef int (*int_fnP_thread_t_i_gregset_t)(thread_t, int, gregset_t); 200 typedef int (*int_fnP_thread_t_i)(thread_t, int); 201 typedef int (*int_fnP_thread_t)(thread_t); 202 203 typedef int (*int_fnP_cond_tP_mutex_tP_timestruc_tP)(cond_t *cv, mutex_t *mx, timestruc_t *abst); 204 typedef int (*int_fnP_cond_tP_mutex_tP)(cond_t *cv, mutex_t *mx); 205 206 // typedef for missing API in libc 207 typedef int (*int_fnP_mutex_tP_i_vP)(mutex_t *, int, void *); 208 typedef int (*int_fnP_mutex_tP)(mutex_t *); 209 typedef int (*int_fnP_cond_tP_i_vP)(cond_t *cv, int scope, void *arg); 210 typedef int (*int_fnP_cond_tP)(cond_t *cv); 211 }; 212 #endif 213 214 //---------------------------------------------------------------------------------------------------- 215 // Debugging 216 217 #define DEBUG_EXCEPTION ::abort(); 218 219 extern "C" void breakpoint(); 220 #define BREAKPOINT ::breakpoint() 221 222 // checking for nanness 223 #ifdef SOLARIS 224 #ifdef SPARC 225 inline int g_isnan(float f) { return isnanf(f); } 226 #else 227 // isnanf() broken on Intel Solaris use isnand() 228 inline int g_isnan(float f) { return isnand(f); } 229 #endif 230 231 inline int g_isnan(double f) { return isnand(f); } 232 #elif LINUX 233 inline int g_isnan(float f) { return isnanf(f); } 234 inline int g_isnan(double f) { return isnan(f); } 235 #else 236 #error "missing platform-specific definition here" 237 #endif 238 239 // Checking for finiteness 240 241 inline int g_isfinite(jfloat f) { return finite(f); } 242 inline int g_isfinite(jdouble f) { return finite(f); } 243 244 245 // Wide characters 246 247 inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); } 248 249 250 // Misc 251 // NOTE: This one leads to an infinite recursion on Linux 252 #ifndef LINUX 253 int local_vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr); 254 #define vsnprintf local_vsnprintf 255 #endif 256 257 // Portability macros 258 #define PRAGMA_INTERFACE 259 #define PRAGMA_IMPLEMENTATION 260 #define PRAGMA_IMPLEMENTATION_(arg) 261 #define VALUE_OBJ_CLASS_SPEC : public _ValueObj 262 263 // Formatting. 264 #ifdef _LP64 265 #define FORMAT64_MODIFIER "l" 266 #else // !_LP64 267 #define FORMAT64_MODIFIER "ll" 268 #endif // _LP64 269 270 #define offset_of(klass,field) offsetof(klass,field) 271 272 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_SPARCWORKS_HPP