jdk8-mips64-public/hotspot: src/share/vm/utilities/globalDefinitions

     1 /*

     2  * Copyright (c) 1998, 2014, 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  */

    25 #ifndef SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_HPP

    26 #define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_HPP

    28 #include "prims/jni.h"

    30 // This file holds compiler-dependent includes,

    31 // globally used constants & types, class (forward)

    32 // declarations and a few frequently used utility functions.

    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>

    42 #ifdef SOLARIS

    43 #include <ieeefp.h>

    44 #endif // SOLARIS

    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

    55 #include <time.h>

    56 #include <fcntl.h>

    57 #include <dlfcn.h>

    58 #include <pthread.h>

    60 #ifdef SOLARIS

    61 #include <thread.h>

    62 #endif // SOLARIS

    64 #include <limits.h>

    65 #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 // SOLARIS

    75 # ifdef SOLARIS_MUTATOR_LIBTHREAD

    76 # include <sys/procfs.h>

    77 # endif

    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

    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

   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

   141 #if !defined(LINUX) && !defined(_ALLBSD_SOURCE)

   142 // Compiler-specific primitive types

   143 typedef unsigned short     uint16_t;

   144 #ifndef _UINT32_T

   145 #define _UINT32_T

   146 typedef unsigned int       uint32_t;

   147 #endif // _UINT32_T

   149 #if !defined(_SYS_INT_TYPES_H)

   150 #ifndef _UINT64_T

   151 #define _UINT64_T

   152 typedef unsigned long long uint64_t;

   153 #endif // _UINT64_T

   154 // %%%% how to access definition of intptr_t portably in 5.5 onward?

   155 typedef int                     intptr_t;

   156 typedef 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

   161 #endif // !LINUX && !_ALLBSD_SOURCE

   163 // Additional Java basic types

   165 typedef uint8_t  jubyte;

   166 typedef uint16_t jushort;

   167 typedef uint32_t juint;

   168 typedef uint64_t julong;

   170 //----------------------------------------------------------------------------------------------------

   171 // Special (possibly not-portable) casts

   172 // Cast floats into same-size integers and vice-versa w/o changing bit-pattern

   173 // %%%%%% These seem like standard C++ to me--how about factoring them out? - Ungar

   175 inline jint    jint_cast   (jfloat  x)           { return *(jint*   )&x; }

   176 inline jlong   jlong_cast  (jdouble x)           { return *(jlong*  )&x; }

   177 inline julong  julong_cast (jdouble x)           { return *(julong* )&x; }

   179 inline jfloat  jfloat_cast (jint    x)           { return *(jfloat* )&x; }

   180 inline jdouble jdouble_cast(jlong   x)           { return *(jdouble*)&x; }

   182 //----------------------------------------------------------------------------------------------------

   183 // Constant for jlong (specifying an long long canstant is C++ compiler specific)

   185 // Build a 64bit integer constant

   186 #define CONST64(x)  (x ## LL)

   187 #define UCONST64(x) (x ## ULL)

   189 const jlong min_jlong = CONST64(0x8000000000000000);

   190 const jlong max_jlong = CONST64(0x7fffffffffffffff);

   193 #ifdef SOLARIS

   194 //----------------------------------------------------------------------------------------------------

   195 // ANSI C++ fixes

   196 // NOTE:In the ANSI committee's continuing attempt to make each version

   197 // of C++ incompatible with the previous version, you can no longer cast

   198 // pointers to functions without specifying linkage unless you want to get

   199 // warnings.

   200 //

   201 // This also means that pointers to functions can no longer be "hidden"

   202 // in opaque types like void * because at the invokation point warnings

   203 // will be generated. While this makes perfect sense from a type safety

   204 // point of view it causes a lot of warnings on old code using C header

   205 // files. Here are some typedefs to make the job of silencing warnings

   206 // a bit easier.

   207 //

   208 // The final kick in the teeth is that you can only have extern "C" linkage

   209 // specified at file scope. So these typedefs are here rather than in the

   210 // .hpp for the class (os:Solaris usually) that needs them.

   212 extern "C" {

   213    typedef int (*int_fnP_thread_t_iP_uP_stack_tP_gregset_t)(thread_t, int*, unsigned *, stack_t*, gregset_t);

   214    typedef int (*int_fnP_thread_t_i_gregset_t)(thread_t, int, gregset_t);

   215    typedef int (*int_fnP_thread_t_i)(thread_t, int);

   216    typedef int (*int_fnP_thread_t)(thread_t);

   218    typedef int (*int_fnP_cond_tP_mutex_tP_timestruc_tP)(cond_t *cv, mutex_t *mx, timestruc_t *abst);

   219    typedef int (*int_fnP_cond_tP_mutex_tP)(cond_t *cv, mutex_t *mx);

   221    // typedef for missing API in libc

   222    typedef int (*int_fnP_mutex_tP_i_vP)(mutex_t *, int, void *);

   223    typedef int (*int_fnP_mutex_tP)(mutex_t *);

   224    typedef int (*int_fnP_cond_tP_i_vP)(cond_t *cv, int scope, void *arg);

   225    typedef int (*int_fnP_cond_tP)(cond_t *cv);

   226 };

   227 #endif // SOLARIS

   229 //----------------------------------------------------------------------------------------------------

   230 // Debugging

   232 #define DEBUG_EXCEPTION ::abort();

   234 #ifdef ARM

   235 #ifdef SOLARIS

   236 #define BREAKPOINT __asm__ volatile (".long 0xe1200070")

   237 #else

   238 #define BREAKPOINT __asm__ volatile (".long 0xe7f001f0")

   239 #endif

   240 #else

   241 extern "C" void breakpoint();

   242 #define BREAKPOINT ::breakpoint()

   243 #endif

   245 // checking for nanness

   246 #ifdef SOLARIS

   247 #ifdef SPARC

   248 inline int g_isnan(float  f) { return isnanf(f); }

   249 #else

   250 // isnanf() broken on Intel Solaris use isnand()

   251 inline int g_isnan(float  f) { return isnand(f); }

   252 #endif

   253 inline int g_isnan(double f) { return isnand(f); }

   254 #elif defined(__APPLE__)

   255 inline int g_isnan(double f) { return isnan(f); }

   256 #elif defined(LINUX) || defined(_ALLBSD_SOURCE)

   257 inline int g_isnan(float  f) { return isnanf(f); }

   258 inline int g_isnan(double f) { return isnan(f); }

   259 #else

   260 #error "missing platform-specific definition here"

   261 #endif

   263 // GCC 4.3 does not allow 0.0/0.0 to produce a NAN value

   264 #if (__GNUC__ == 4) && (__GNUC_MINOR__ > 2)

   265 #define CAN_USE_NAN_DEFINE 1

   266 #endif

   269 // Checking for finiteness

   271 inline int g_isfinite(jfloat  f)                 { return finite(f); }

   272 inline int g_isfinite(jdouble f)                 { return finite(f); }

   275 // Wide characters

   277 inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); }

   280 // Portability macros

   281 #define PRAGMA_INTERFACE             #pragma interface

   282 #define PRAGMA_IMPLEMENTATION        #pragma implementation

   283 #define VALUE_OBJ_CLASS_SPEC

   285 #ifndef ATTRIBUTE_PRINTF

   286 // Diagnostic pragmas like the ones defined below in PRAGMA_FORMAT_NONLITERAL_IGNORED

   287 // were only introduced in GCC 4.2. Because we have no other possibility to ignore

   288 // these warnings for older versions of GCC, we simply don't decorate our printf-style

   289 // functions with __attribute__(format) in that case.

   290 #if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 2)) || (__GNUC__ > 4)

   291 #define ATTRIBUTE_PRINTF(fmt,vargs)  __attribute__((format(printf, fmt, vargs)))

   292 #else

   293 #define ATTRIBUTE_PRINTF(fmt,vargs)

   294 #endif

   295 #endif

   297 #define PRAGMA_FORMAT_NONLITERAL_IGNORED _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"") \

   298                                          _Pragma("GCC diagnostic ignored \"-Wformat-security\"")

   299 #define PRAGMA_FORMAT_IGNORED _Pragma("GCC diagnostic ignored \"-Wformat\"")

   301 #if defined(__clang_major__) && \

   302       (__clang_major__ >= 4 || \

   303       (__clang_major__ >= 3 && __clang_minor__ >= 1)) || \

   304     ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4)

   305 // Tested to work with clang version 3.1 and better.

   306 #define PRAGMA_DIAG_PUSH             _Pragma("GCC diagnostic push")

   307 #define PRAGMA_DIAG_POP              _Pragma("GCC diagnostic pop")

   308 #define PRAGMA_FORMAT_NONLITERAL_IGNORED_EXTERNAL

   309 #define PRAGMA_FORMAT_NONLITERAL_IGNORED_INTERNAL PRAGMA_FORMAT_NONLITERAL_IGNORED

   311 // Hack to deal with gcc yammering about non-security format stuff

   312 #else

   313 // Old versions of gcc don't do push/pop, also do not cope with this pragma within a function

   314 // One method does so much varied printing that it is decorated with both internal and external

   315 // versions of the macro-pragma to obtain better checking with newer compilers.

   316 #define PRAGMA_DIAG_PUSH

   317 #define PRAGMA_DIAG_POP

   318 #define PRAGMA_FORMAT_NONLITERAL_IGNORED_EXTERNAL PRAGMA_FORMAT_NONLITERAL_IGNORED

   319 #define PRAGMA_FORMAT_NONLITERAL_IGNORED_INTERNAL

   320 #endif

   322 #ifndef __clang_major__

   323 #define PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC _Pragma("GCC diagnostic ignored \"-Wformat\"") _Pragma("GCC diagnostic error \"-Wformat-nonliteral\"") _Pragma("GCC diagnostic error \"-Wformat-security\"")

   324 #endif

   326 #if (__GNUC__ == 2) && (__GNUC_MINOR__ < 95)

   327 #define TEMPLATE_TABLE_BUG

   328 #endif

   329 #if (__GNUC__ == 2) && (__GNUC_MINOR__ >= 96)

   330 #define CONST_SDM_BUG

   331 #endif

   333 // Formatting.

   334 #ifdef _LP64

   335 #define FORMAT64_MODIFIER "l"

   336 #else // !_LP64

   337 #define FORMAT64_MODIFIER "ll"

   338 #endif // _LP64

   340 // HACK: gcc warns about applying offsetof() to non-POD object or calculating

   341 //       offset directly when base address is NULL. Use 16 to get around the

   342 //       warning. gcc-3.4 has an option -Wno-invalid-offsetof to suppress

   343 //       this warning.

   344 #define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16)

   346 #ifdef offsetof

   347 # undef offsetof

   348 #endif

   349 #define offsetof(klass,field) offset_of(klass,field)

   351 #if defined(_LP64) && defined(__APPLE__)

   352 #define JLONG_FORMAT           "%ld"

   353 #endif // _LP64 && __APPLE__

   355 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_HPP

src/share/vm/utilities/globalDefinitions_gcc.hpp@710a3c8b516e

src/share/vm/utilities/globalDefinitions_gcc.hpp

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/utilities/globalDefinitions_gcc.hpp@710a3c8b516e

src/share/vm/utilities/globalDefinitions_gcc.hpp