globalDefinitions_sparcWorks.hpp revision 1472:c18cbe5936b8
1/* 2 * Copyright (c) 1997, 2009, 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// This file holds compiler-dependent includes, 26// globally used constants & types, class (forward) 27// declarations and a few frequently used utility functions. 28 29 30# include <ctype.h> 31# include <dirent.h> 32# include <string.h> 33# include <strings.h> // for bsd'isms 34# include <stdarg.h> 35# include <stddef.h> // for offsetof 36# include <stdio.h> 37# include <stdlib.h> 38# include <wchar.h> 39# include <stdarg.h> 40#ifdef SOLARIS 41# include <ieeefp.h> 42#endif 43# include <math.h> 44#ifdef LINUX 45#ifndef FP_PZERO 46 // Linux doesn't have positive/negative zero 47 #define FP_PZERO FP_ZERO 48#endif 49#ifndef fpclass 50 #define fpclass fpclassify 51#endif 52#endif 53# include <time.h> 54# include <fcntl.h> 55# include <dlfcn.h> 56# include <pthread.h> 57#ifdef SOLARIS 58# include <thread.h> 59#endif 60# include <limits.h> 61# include <errno.h> 62#ifdef SOLARIS 63# include <sys/trap.h> 64# include <sys/regset.h> 65# include <sys/procset.h> 66# include <ucontext.h> 67# include <setjmp.h> 68#endif 69# ifdef SOLARIS_MUTATOR_LIBTHREAD 70# include <sys/procfs.h> 71# endif 72#ifdef LINUX 73# include <inttypes.h> 74# include <signal.h> 75# include <ucontext.h> 76# include <sys/time.h> 77#endif 78 79 80// 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures 81// When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in 82// system header files. On 32-bit architectures, there is no problem. 83// On 64-bit architectures, defining NULL as a 32-bit constant can cause 84// problems with varargs functions: C++ integral promotion rules say for 85// varargs, we pass the argument 0 as an int. So, if NULL was passed to a 86// varargs function it will remain 32-bits. Depending on the calling 87// convention of the machine, if the argument is passed on the stack then 88// only 32-bits of the "NULL" pointer may be initialized to zero. The 89// other 32-bits will be garbage. If the varargs function is expecting a 90// pointer when it extracts the argument, then we have a problem. 91// 92// Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0. 93// 94// Note: this fix doesn't work well on Linux because NULL will be overwritten 95// whenever a system header file is included. Linux handles NULL correctly 96// through a special type '__null'. 97#ifdef SOLARIS 98#ifdef _LP64 99#undef NULL 100#define NULL 0L 101#else 102#ifndef NULL 103#define NULL 0 104#endif 105#endif 106#endif 107 108// NULL vs NULL_WORD: 109// On Linux NULL is defined as a special type '__null'. Assigning __null to 110// integer variable will cause gcc warning. Use NULL_WORD in places where a 111// pointer is stored as integer value. On some platforms, sizeof(intptr_t) > 112// sizeof(void*), so here we want something which is integer type, but has the 113// same size as a pointer. 114#ifdef LINUX 115 #ifdef _LP64 116 #define NULL_WORD 0L 117 #else 118 // Cast 0 to intptr_t rather than int32_t since they are not the same type 119 // on some platforms. 120 #define NULL_WORD ((intptr_t)0) 121 #endif 122#else 123 #define NULL_WORD NULL 124#endif 125 126#ifndef LINUX 127// Compiler-specific primitive types 128typedef unsigned short uint16_t; 129#ifndef _UINT32_T 130#define _UINT32_T 131typedef unsigned int uint32_t; 132#endif 133#if !defined(_SYS_INT_TYPES_H) 134#ifndef _UINT64_T 135#define _UINT64_T 136typedef unsigned long long uint64_t; 137#endif 138// %%%% how to access definition of intptr_t portably in 5.5 onward? 139typedef int intptr_t; 140typedef unsigned int uintptr_t; 141// If this gets an error, figure out a symbol XXX that implies the 142// prior definition of intptr_t, and add "&& !defined(XXX)" above. 143#endif 144#endif 145 146// Additional Java basic types 147 148typedef unsigned char jubyte; 149typedef unsigned short jushort; 150typedef unsigned int juint; 151typedef unsigned long long julong; 152 153//---------------------------------------------------------------------------------------------------- 154// Special (possibly not-portable) casts 155// Cast floats into same-size integers and vice-versa w/o changing bit-pattern 156 157inline jint jint_cast (jfloat x) { return *(jint* )&x; } 158inline jlong jlong_cast (jdouble x) { return *(jlong* )&x; } 159 160inline jfloat jfloat_cast (jint x) { return *(jfloat* )&x; } 161inline jdouble jdouble_cast(jlong x) { return *(jdouble*)&x; } 162 163//---------------------------------------------------------------------------------------------------- 164// Constant for jlong (specifying an long long constant is C++ compiler specific) 165 166// Build a 64bit integer constant 167#define CONST64(x) (x ## LL) 168#define UCONST64(x) (x ## ULL) 169 170const jlong min_jlong = CONST64(0x8000000000000000); 171const jlong max_jlong = CONST64(0x7fffffffffffffff); 172 173#ifdef SOLARIS 174//---------------------------------------------------------------------------------------------------- 175// ANSI C++ fixes 176// NOTE:In the ANSI committee's continuing attempt to make each version 177// of C++ incompatible with the previous version, you can no longer cast 178// pointers to functions without specifying linkage unless you want to get 179// warnings. 180// 181// This also means that pointers to functions can no longer be "hidden" 182// in opaque types like void * because at the invokation point warnings 183// will be generated. While this makes perfect sense from a type safety 184// point of view it causes a lot of warnings on old code using C header 185// files. Here are some typedefs to make the job of silencing warnings 186// a bit easier. 187// 188// The final kick in the teeth is that you can only have extern "C" linkage 189// specified at file scope. So these typedefs are here rather than in the 190// .hpp for the class (os:Solaris usually) that needs them. 191 192extern "C" { 193 typedef int (*int_fnP_thread_t_iP_uP_stack_tP_gregset_t)(thread_t, int*, unsigned *, stack_t*, gregset_t); 194 typedef int (*int_fnP_thread_t_i_gregset_t)(thread_t, int, gregset_t); 195 typedef int (*int_fnP_thread_t_i)(thread_t, int); 196 typedef int (*int_fnP_thread_t)(thread_t); 197 198 typedef int (*int_fnP_cond_tP_mutex_tP_timestruc_tP)(cond_t *cv, mutex_t *mx, timestruc_t *abst); 199 typedef int (*int_fnP_cond_tP_mutex_tP)(cond_t *cv, mutex_t *mx); 200 201 // typedef for missing API in libc 202 typedef int (*int_fnP_mutex_tP_i_vP)(mutex_t *, int, void *); 203 typedef int (*int_fnP_mutex_tP)(mutex_t *); 204 typedef int (*int_fnP_cond_tP_i_vP)(cond_t *cv, int scope, void *arg); 205 typedef int (*int_fnP_cond_tP)(cond_t *cv); 206}; 207#endif 208 209//---------------------------------------------------------------------------------------------------- 210// Debugging 211 212#define DEBUG_EXCEPTION ::abort(); 213 214extern "C" void breakpoint(); 215#define BREAKPOINT ::breakpoint() 216 217// checking for nanness 218#ifdef SOLARIS 219#ifdef SPARC 220inline int g_isnan(float f) { return isnanf(f); } 221#else 222// isnanf() broken on Intel Solaris use isnand() 223inline int g_isnan(float f) { return isnand(f); } 224#endif 225 226inline int g_isnan(double f) { return isnand(f); } 227#elif LINUX 228inline int g_isnan(float f) { return isnanf(f); } 229inline int g_isnan(double f) { return isnan(f); } 230#else 231#error "missing platform-specific definition here" 232#endif 233 234// Checking for finiteness 235 236inline int g_isfinite(jfloat f) { return finite(f); } 237inline int g_isfinite(jdouble f) { return finite(f); } 238 239 240// Wide characters 241 242inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); } 243 244 245// Misc 246// NOTE: This one leads to an infinite recursion on Linux 247#ifndef LINUX 248int local_vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr); 249#define vsnprintf local_vsnprintf 250#endif 251 252// Portability macros 253#define PRAGMA_INTERFACE 254#define PRAGMA_IMPLEMENTATION 255#define PRAGMA_IMPLEMENTATION_(arg) 256#define VALUE_OBJ_CLASS_SPEC : public _ValueObj 257 258// Formatting. 259#ifdef _LP64 260#define FORMAT64_MODIFIER "l" 261#else // !_LP64 262#define FORMAT64_MODIFIER "ll" 263#endif // _LP64 264 265#define offset_of(klass,field) offsetof(klass,field) 266