1/* 2 * Copyright (c) 1998, 2017, 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#include <time.h> 48#include <fcntl.h> 49#include <dlfcn.h> 50#include <pthread.h> 51 52#ifdef SOLARIS 53#include <thread.h> 54#endif // SOLARIS 55 56#include <limits.h> 57#include <errno.h> 58 59#ifdef SOLARIS 60#include <sys/trap.h> 61#include <sys/regset.h> 62#include <sys/procset.h> 63#include <ucontext.h> 64#include <setjmp.h> 65#endif // SOLARIS 66 67# ifdef SOLARIS_MUTATOR_LIBTHREAD 68# include <sys/procfs.h> 69# endif 70 71#if defined(LINUX) || defined(_ALLBSD_SOURCE) 72#include <inttypes.h> 73#include <signal.h> 74#ifndef __OpenBSD__ 75#include <ucontext.h> 76#endif 77#ifdef __APPLE__ 78 #include <AvailabilityMacros.h> 79 #include <mach/mach.h> 80#endif 81#include <sys/time.h> 82#endif // LINUX || _ALLBSD_SOURCE 83 84// 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures 85// When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in 86// system header files. On 32-bit architectures, there is no problem. 87// On 64-bit architectures, defining NULL as a 32-bit constant can cause 88// problems with varargs functions: C++ integral promotion rules say for 89// varargs, we pass the argument 0 as an int. So, if NULL was passed to a 90// varargs function it will remain 32-bits. Depending on the calling 91// convention of the machine, if the argument is passed on the stack then 92// only 32-bits of the "NULL" pointer may be initialized to zero. The 93// other 32-bits will be garbage. If the varargs function is expecting a 94// pointer when it extracts the argument, then we have a problem. 95// 96// Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0. 97// 98// Note: this fix doesn't work well on Linux because NULL will be overwritten 99// whenever a system header file is included. Linux handles NULL correctly 100// through a special type '__null'. 101#ifdef SOLARIS 102 #ifdef _LP64 103 #undef NULL 104 #define NULL 0L 105 #else 106 #ifndef NULL 107 #define NULL 0 108 #endif 109 #endif 110#endif 111 112// NULL vs NULL_WORD: 113// On Linux NULL is defined as a special type '__null'. Assigning __null to 114// integer variable will cause gcc warning. Use NULL_WORD in places where a 115// pointer is stored as integer value. On some platforms, sizeof(intptr_t) > 116// sizeof(void*), so here we want something which is integer type, but has the 117// same size as a pointer. 118#ifdef __GNUC__ 119 #ifdef _LP64 120 #define NULL_WORD 0L 121 #else 122 // Cast 0 to intptr_t rather than int32_t since they are not the same type 123 // on platforms such as Mac OS X. 124 #define NULL_WORD ((intptr_t)0) 125 #endif 126#else 127 #define NULL_WORD NULL 128#endif 129 130#if !defined(LINUX) && !defined(_ALLBSD_SOURCE) 131// Compiler-specific primitive types 132typedef unsigned short uint16_t; 133#ifndef _UINT32_T 134#define _UINT32_T 135typedef unsigned int uint32_t; 136#endif // _UINT32_T 137 138#if !defined(_SYS_INT_TYPES_H) 139#ifndef _UINT64_T 140#define _UINT64_T 141typedef unsigned long long uint64_t; 142#endif // _UINT64_T 143// %%%% how to access definition of intptr_t portably in 5.5 onward? 144typedef int intptr_t; 145typedef 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 // _SYS_INT_TYPES_H 149 150#endif // !LINUX && !_ALLBSD_SOURCE 151 152// Additional Java basic types 153 154typedef uint8_t jubyte; 155typedef uint16_t jushort; 156typedef uint32_t juint; 157typedef uint64_t julong; 158 159 160#ifdef SOLARIS 161// ANSI C++ fixes 162// NOTE:In the ANSI committee's continuing attempt to make each version 163// of C++ incompatible with the previous version, you can no longer cast 164// pointers to functions without specifying linkage unless you want to get 165// warnings. 166// 167// This also means that pointers to functions can no longer be "hidden" 168// in opaque types like void * because at the invokation point warnings 169// will be generated. While this makes perfect sense from a type safety 170// point of view it causes a lot of warnings on old code using C header 171// files. Here are some typedefs to make the job of silencing warnings 172// a bit easier. 173// 174// The final kick in the teeth is that you can only have extern "C" linkage 175// specified at file scope. So these typedefs are here rather than in the 176// .hpp for the class (os:Solaris usually) that needs them. 177 178extern "C" { 179 typedef int (*int_fnP_thread_t_iP_uP_stack_tP_gregset_t)(thread_t, int*, unsigned *, stack_t*, gregset_t); 180 typedef int (*int_fnP_thread_t_i_gregset_t)(thread_t, int, gregset_t); 181 typedef int (*int_fnP_thread_t_i)(thread_t, int); 182 typedef int (*int_fnP_thread_t)(thread_t); 183 184 typedef int (*int_fnP_cond_tP_mutex_tP_timestruc_tP)(cond_t *cv, mutex_t *mx, timestruc_t *abst); 185 typedef int (*int_fnP_cond_tP_mutex_tP)(cond_t *cv, mutex_t *mx); 186 187 // typedef for missing API in libc 188 typedef int (*int_fnP_mutex_tP_i_vP)(mutex_t *, int, void *); 189 typedef int (*int_fnP_mutex_tP)(mutex_t *); 190 typedef int (*int_fnP_cond_tP_i_vP)(cond_t *cv, int scope, void *arg); 191 typedef int (*int_fnP_cond_tP)(cond_t *cv); 192}; 193#endif // SOLARIS 194 195// checking for nanness 196#ifdef SOLARIS 197#ifdef SPARC 198inline int g_isnan(float f) { return isnanf(f); } 199#else 200// isnanf() broken on Intel Solaris use isnand() 201inline int g_isnan(float f) { return isnand(f); } 202#endif 203inline int g_isnan(double f) { return isnand(f); } 204#elif defined(__APPLE__) 205inline int g_isnan(double f) { return isnan(f); } 206#elif defined(LINUX) || defined(_ALLBSD_SOURCE) 207inline int g_isnan(float f) { return isnanf(f); } 208inline int g_isnan(double f) { return isnan(f); } 209#else 210#error "missing platform-specific definition here" 211#endif 212 213// GCC 4.3 does not allow 0.0/0.0 to produce a NAN value 214#if (__GNUC__ == 4) && (__GNUC_MINOR__ > 2) 215#define CAN_USE_NAN_DEFINE 1 216#endif 217 218 219// Checking for finiteness 220 221inline int g_isfinite(jfloat f) { return finite(f); } 222inline int g_isfinite(jdouble f) { return finite(f); } 223 224 225// Wide characters 226 227inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); } 228 229 230// Portability macros 231#define PRAGMA_INTERFACE #pragma interface 232#define PRAGMA_IMPLEMENTATION #pragma implementation 233#define VALUE_OBJ_CLASS_SPEC 234 235#if (__GNUC__ == 2) && (__GNUC_MINOR__ < 95) 236#define TEMPLATE_TABLE_BUG 237#endif 238#if (__GNUC__ == 2) && (__GNUC_MINOR__ >= 96) 239#define CONST_SDM_BUG 240#endif 241 242// Formatting. 243#ifdef _LP64 244# ifdef __APPLE__ 245# define FORMAT64_MODIFIER "ll" 246# else 247# define FORMAT64_MODIFIER "l" 248# endif 249#else // !_LP64 250#define FORMAT64_MODIFIER "ll" 251#endif // _LP64 252 253// HACK: gcc warns about applying offsetof() to non-POD object or calculating 254// offset directly when base address is NULL. Use 16 to get around the 255// warning. gcc-3.4 has an option -Wno-invalid-offsetof to suppress 256// this warning. 257#define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16) 258 259#ifdef offsetof 260# undef offsetof 261#endif 262#define offsetof(klass,field) offset_of(klass,field) 263 264#if defined(_LP64) && defined(__APPLE__) 265#define JLONG_FORMAT "%ld" 266#endif // _LP64 && __APPLE__ 267 268#ifndef USE_LIBRARY_BASED_TLS_ONLY 269#define THREAD_LOCAL_DECL __thread 270#endif 271 272// Inlining support 273#define NOINLINE __attribute__ ((noinline)) 274#define ALWAYSINLINE inline __attribute__ ((always_inline)) 275 276#endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_HPP 277