globalDefinitions_gcc.hpp revision 7983:0ef1d0b2fc2e
1/* 2 * Copyright (c) 1998, 2015, 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 143typedef unsigned short uint16_t; 144#ifndef _UINT32_T 145#define _UINT32_T 146typedef unsigned int uint32_t; 147#endif // _UINT32_T 148 149#if !defined(_SYS_INT_TYPES_H) 150#ifndef _UINT64_T 151#define _UINT64_T 152typedef unsigned long long uint64_t; 153#endif // _UINT64_T 154// %%%% how to access definition of intptr_t portably in 5.5 onward? 155typedef int intptr_t; 156typedef 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 165typedef uint8_t jubyte; 166typedef uint16_t jushort; 167typedef uint32_t juint; 168typedef uint64_t julong; 169 170 171//---------------------------------------------------------------------------------------------------- 172// Constant for jlong (specifying an long long canstant is C++ compiler specific) 173 174// Build a 64bit integer constant 175#define CONST64(x) (x ## LL) 176#define UCONST64(x) (x ## ULL) 177 178const jlong min_jlong = CONST64(0x8000000000000000); 179const jlong max_jlong = CONST64(0x7fffffffffffffff); 180 181 182#ifdef SOLARIS 183//---------------------------------------------------------------------------------------------------- 184// ANSI C++ fixes 185// NOTE:In the ANSI committee's continuing attempt to make each version 186// of C++ incompatible with the previous version, you can no longer cast 187// pointers to functions without specifying linkage unless you want to get 188// warnings. 189// 190// This also means that pointers to functions can no longer be "hidden" 191// in opaque types like void * because at the invokation point warnings 192// will be generated. While this makes perfect sense from a type safety 193// point of view it causes a lot of warnings on old code using C header 194// files. Here are some typedefs to make the job of silencing warnings 195// a bit easier. 196// 197// The final kick in the teeth is that you can only have extern "C" linkage 198// specified at file scope. So these typedefs are here rather than in the 199// .hpp for the class (os:Solaris usually) that needs them. 200 201extern "C" { 202 typedef int (*int_fnP_thread_t_iP_uP_stack_tP_gregset_t)(thread_t, int*, unsigned *, stack_t*, gregset_t); 203 typedef int (*int_fnP_thread_t_i_gregset_t)(thread_t, int, gregset_t); 204 typedef int (*int_fnP_thread_t_i)(thread_t, int); 205 typedef int (*int_fnP_thread_t)(thread_t); 206 207 typedef int (*int_fnP_cond_tP_mutex_tP_timestruc_tP)(cond_t *cv, mutex_t *mx, timestruc_t *abst); 208 typedef int (*int_fnP_cond_tP_mutex_tP)(cond_t *cv, mutex_t *mx); 209 210 // typedef for missing API in libc 211 typedef int (*int_fnP_mutex_tP_i_vP)(mutex_t *, int, void *); 212 typedef int (*int_fnP_mutex_tP)(mutex_t *); 213 typedef int (*int_fnP_cond_tP_i_vP)(cond_t *cv, int scope, void *arg); 214 typedef int (*int_fnP_cond_tP)(cond_t *cv); 215}; 216#endif // SOLARIS 217 218//---------------------------------------------------------------------------------------------------- 219// Debugging 220 221#define DEBUG_EXCEPTION ::abort(); 222 223#ifdef ARM32 224#ifdef SOLARIS 225#define BREAKPOINT __asm__ volatile (".long 0xe1200070") 226#else 227#define BREAKPOINT __asm__ volatile (".long 0xe7f001f0") 228#endif 229#else 230extern "C" void breakpoint(); 231#define BREAKPOINT ::breakpoint() 232#endif 233 234// checking for nanness 235#ifdef SOLARIS 236#ifdef SPARC 237inline int g_isnan(float f) { return isnanf(f); } 238#else 239// isnanf() broken on Intel Solaris use isnand() 240inline int g_isnan(float f) { return isnand(f); } 241#endif 242inline int g_isnan(double f) { return isnand(f); } 243#elif defined(__APPLE__) 244inline int g_isnan(double f) { return isnan(f); } 245#elif defined(LINUX) || defined(_ALLBSD_SOURCE) 246inline int g_isnan(float f) { return isnanf(f); } 247inline int g_isnan(double f) { return isnan(f); } 248#else 249#error "missing platform-specific definition here" 250#endif 251 252// GCC 4.3 does not allow 0.0/0.0 to produce a NAN value 253#if (__GNUC__ == 4) && (__GNUC_MINOR__ > 2) 254#define CAN_USE_NAN_DEFINE 1 255#endif 256 257 258// Checking for finiteness 259 260inline int g_isfinite(jfloat f) { return finite(f); } 261inline int g_isfinite(jdouble f) { return finite(f); } 262 263 264// Wide characters 265 266inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); } 267 268 269// Portability macros 270#define PRAGMA_INTERFACE #pragma interface 271#define PRAGMA_IMPLEMENTATION #pragma implementation 272#define VALUE_OBJ_CLASS_SPEC 273 274// Diagnostic pragmas like the ones defined below in PRAGMA_FORMAT_NONLITERAL_IGNORED 275// were only introduced in GCC 4.2. Because we have no other possibility to ignore 276// these warnings for older versions of GCC, we simply don't decorate our printf-style 277// functions with __attribute__(format) in that case. 278#if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 2)) || (__GNUC__ > 4) 279#ifndef ATTRIBUTE_PRINTF 280#define ATTRIBUTE_PRINTF(fmt,vargs) __attribute__((format(printf, fmt, vargs))) 281#endif 282#ifndef ATTRIBUTE_SCANF 283#define ATTRIBUTE_SCANF(fmt,vargs) __attribute__((format(scanf, fmt, vargs))) 284#endif 285#endif 286 287#define PRAGMA_FORMAT_NONLITERAL_IGNORED _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"") \ 288 _Pragma("GCC diagnostic ignored \"-Wformat-security\"") 289#define PRAGMA_FORMAT_IGNORED _Pragma("GCC diagnostic ignored \"-Wformat\"") 290 291#if defined(__clang_major__) && \ 292 (__clang_major__ >= 4 || \ 293 (__clang_major__ >= 3 && __clang_minor__ >= 1)) || \ 294 ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4) 295// Tested to work with clang version 3.1 and better. 296#define PRAGMA_DIAG_PUSH _Pragma("GCC diagnostic push") 297#define PRAGMA_DIAG_POP _Pragma("GCC diagnostic pop") 298#define PRAGMA_FORMAT_NONLITERAL_IGNORED_EXTERNAL 299#define PRAGMA_FORMAT_NONLITERAL_IGNORED_INTERNAL PRAGMA_FORMAT_NONLITERAL_IGNORED 300 301// Hack to deal with gcc yammering about non-security format stuff 302#else 303// Old versions of gcc don't do push/pop, also do not cope with this pragma within a function 304// One method does so much varied printing that it is decorated with both internal and external 305// versions of the macro-pragma to obtain better checking with newer compilers. 306#define PRAGMA_DIAG_PUSH 307#define PRAGMA_DIAG_POP 308#define PRAGMA_FORMAT_NONLITERAL_IGNORED_EXTERNAL PRAGMA_FORMAT_NONLITERAL_IGNORED 309#define PRAGMA_FORMAT_NONLITERAL_IGNORED_INTERNAL 310#endif 311 312#ifndef __clang_major__ 313#define PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC _Pragma("GCC diagnostic ignored \"-Wformat\"") _Pragma("GCC diagnostic error \"-Wformat-nonliteral\"") _Pragma("GCC diagnostic error \"-Wformat-security\"") 314#endif 315 316#if (__GNUC__ == 2) && (__GNUC_MINOR__ < 95) 317#define TEMPLATE_TABLE_BUG 318#endif 319#if (__GNUC__ == 2) && (__GNUC_MINOR__ >= 96) 320#define CONST_SDM_BUG 321#endif 322 323// Formatting. 324#ifdef _LP64 325#define FORMAT64_MODIFIER "l" 326#else // !_LP64 327#define FORMAT64_MODIFIER "ll" 328#endif // _LP64 329 330// HACK: gcc warns about applying offsetof() to non-POD object or calculating 331// offset directly when base address is NULL. Use 16 to get around the 332// warning. gcc-3.4 has an option -Wno-invalid-offsetof to suppress 333// this warning. 334#define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16) 335 336#ifdef offsetof 337# undef offsetof 338#endif 339#define offsetof(klass,field) offset_of(klass,field) 340 341#if defined(_LP64) && defined(__APPLE__) 342#define JLONG_FORMAT "%ld" 343#endif // _LP64 && __APPLE__ 344 345#endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_HPP 346