85 #endif // LINUX || _ALLBSD_SOURCE
86
87 // 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures
88 // When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in
89 // system header files. On 32-bit architectures, there is no problem.
90 // On 64-bit architectures, defining NULL as a 32-bit constant can cause
91 // problems with varargs functions: C++ integral promotion rules say for
92 // varargs, we pass the argument 0 as an int. So, if NULL was passed to a
93 // varargs function it will remain 32-bits. Depending on the calling
94 // convention of the machine, if the argument is passed on the stack then
95 // only 32-bits of the "NULL" pointer may be initialized to zero. The
96 // other 32-bits will be garbage. If the varargs function is expecting a
97 // pointer when it extracts the argument, then we have a problem.
98 //
99 // Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0.
100 //
101 // Note: this fix doesn't work well on Linux because NULL will be overwritten
102 // whenever a system header file is included. Linux handles NULL correctly
103 // through a special type '__null'.
104 #ifdef SOLARIS
105 #ifdef _LP64
106 #undef NULL
107 #define NULL 0L
108 #else
109 #ifndef NULL
110 #define NULL 0
111 #endif
112 #endif
113 #endif
114
115 // NULL vs NULL_WORD:
116 // On Linux NULL is defined as a special type '__null'. Assigning __null to
117 // integer variable will cause gcc warning. Use NULL_WORD in places where a
118 // pointer is stored as integer value. On some platforms, sizeof(intptr_t) >
119 // sizeof(void*), so here we want something which is integer type, but has the
120 // same size as a pointer.
121 #ifdef __GNUC__
122 #ifdef _LP64
123 #define NULL_WORD 0L
124 #else
125 // Cast 0 to intptr_t rather than int32_t since they are not the same type
126 // on platforms such as Mac OS X.
127 #define NULL_WORD ((intptr_t)0)
128 #endif
129 #else
130 #define NULL_WORD NULL
131 #endif
132
133 #if !defined(LINUX) && !defined(_ALLBSD_SOURCE)
134 // Compiler-specific primitive types
135 typedef unsigned short uint16_t;
136 #ifndef _UINT32_T
137 #define _UINT32_T
138 typedef unsigned int uint32_t;
139 #endif // _UINT32_T
140
141 #if !defined(_SYS_INT_TYPES_H)
142 #ifndef _UINT64_T
143 #define _UINT64_T
144 typedef unsigned long long uint64_t;
145 #endif // _UINT64_T
146 // %%%% how to access definition of intptr_t portably in 5.5 onward?
147 typedef int intptr_t;
148 typedef unsigned int uintptr_t;
269 #define PRAGMA_DIAG_PUSH _Pragma("GCC diagnostic push")
270 #define PRAGMA_DIAG_POP _Pragma("GCC diagnostic pop")
271
272 // Hack to deal with gcc yammering about non-security format stuff
273 #else
274 // Old versions of gcc don't do push/pop, also do not cope with this pragma within a function
275 // One method does so much varied printing that it is decorated with both internal and external
276 // versions of the macro-pragma to obtain better checking with newer compilers.
277 #define PRAGMA_DIAG_PUSH
278 #define PRAGMA_DIAG_POP
279 #endif
280
281 #if (__GNUC__ == 2) && (__GNUC_MINOR__ < 95)
282 #define TEMPLATE_TABLE_BUG
283 #endif
284 #if (__GNUC__ == 2) && (__GNUC_MINOR__ >= 96)
285 #define CONST_SDM_BUG
286 #endif
287
288 // Formatting.
289 #ifdef _LP64
290 #define FORMAT64_MODIFIER "l"
291 #else // !_LP64
292 #define FORMAT64_MODIFIER "ll"
293 #endif // _LP64
294
295 // HACK: gcc warns about applying offsetof() to non-POD object or calculating
296 // offset directly when base address is NULL. Use 16 to get around the
297 // warning. gcc-3.4 has an option -Wno-invalid-offsetof to suppress
298 // this warning.
299 #define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16)
300
301 #ifdef offsetof
302 # undef offsetof
303 #endif
304 #define offsetof(klass,field) offset_of(klass,field)
305
306 #if defined(_LP64) && defined(__APPLE__)
307 #define JLONG_FORMAT "%ld"
308 #endif // _LP64 && __APPLE__
309
310 #ifndef USE_LIBRARY_BASED_TLS_ONLY
311 #define THREAD_LOCAL_DECL __thread
312 #endif
313
314 // Inlining support
315 #define NOINLINE __attribute__ ((noinline))
316 #define ALWAYSINLINE inline __attribute__ ((always_inline))
317
318 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_HPP
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85 #endif // LINUX || _ALLBSD_SOURCE
86
87 // 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures
88 // When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in
89 // system header files. On 32-bit architectures, there is no problem.
90 // On 64-bit architectures, defining NULL as a 32-bit constant can cause
91 // problems with varargs functions: C++ integral promotion rules say for
92 // varargs, we pass the argument 0 as an int. So, if NULL was passed to a
93 // varargs function it will remain 32-bits. Depending on the calling
94 // convention of the machine, if the argument is passed on the stack then
95 // only 32-bits of the "NULL" pointer may be initialized to zero. The
96 // other 32-bits will be garbage. If the varargs function is expecting a
97 // pointer when it extracts the argument, then we have a problem.
98 //
99 // Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0.
100 //
101 // Note: this fix doesn't work well on Linux because NULL will be overwritten
102 // whenever a system header file is included. Linux handles NULL correctly
103 // through a special type '__null'.
104 #ifdef SOLARIS
105 #undef NULL
106 #define NULL 0L
107 #endif
108
109 // NULL vs NULL_WORD:
110 // On Linux NULL is defined as a special type '__null'. Assigning __null to
111 // integer variable will cause gcc warning. Use NULL_WORD in places where a
112 // pointer is stored as integer value. On some platforms, sizeof(intptr_t) >
113 // sizeof(void*), so here we want something which is integer type, but has the
114 // same size as a pointer.
115 #ifdef __GNUC__
116 #define NULL_WORD 0L
117 #else
118 #define NULL_WORD NULL
119 #endif
120
121 #if !defined(LINUX) && !defined(_ALLBSD_SOURCE)
122 // Compiler-specific primitive types
123 typedef unsigned short uint16_t;
124 #ifndef _UINT32_T
125 #define _UINT32_T
126 typedef unsigned int uint32_t;
127 #endif // _UINT32_T
128
129 #if !defined(_SYS_INT_TYPES_H)
130 #ifndef _UINT64_T
131 #define _UINT64_T
132 typedef unsigned long long uint64_t;
133 #endif // _UINT64_T
134 // %%%% how to access definition of intptr_t portably in 5.5 onward?
135 typedef int intptr_t;
136 typedef unsigned int uintptr_t;
257 #define PRAGMA_DIAG_PUSH _Pragma("GCC diagnostic push")
258 #define PRAGMA_DIAG_POP _Pragma("GCC diagnostic pop")
259
260 // Hack to deal with gcc yammering about non-security format stuff
261 #else
262 // Old versions of gcc don't do push/pop, also do not cope with this pragma within a function
263 // One method does so much varied printing that it is decorated with both internal and external
264 // versions of the macro-pragma to obtain better checking with newer compilers.
265 #define PRAGMA_DIAG_PUSH
266 #define PRAGMA_DIAG_POP
267 #endif
268
269 #if (__GNUC__ == 2) && (__GNUC_MINOR__ < 95)
270 #define TEMPLATE_TABLE_BUG
271 #endif
272 #if (__GNUC__ == 2) && (__GNUC_MINOR__ >= 96)
273 #define CONST_SDM_BUG
274 #endif
275
276 // Formatting.
277 #define FORMAT64_MODIFIER "l"
278
279 // HACK: gcc warns about applying offsetof() to non-POD object or calculating
280 // offset directly when base address is NULL. Use 16 to get around the
281 // warning. gcc-3.4 has an option -Wno-invalid-offsetof to suppress
282 // this warning.
283 #define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16)
284
285 #ifdef offsetof
286 # undef offsetof
287 #endif
288 #define offsetof(klass,field) offset_of(klass,field)
289
290 #if defined(__APPLE__)
291 #define JLONG_FORMAT "%ld"
292 #endif // __APPLE__
293
294 #ifndef USE_LIBRARY_BASED_TLS_ONLY
295 #define THREAD_LOCAL_DECL __thread
296 #endif
297
298 // Inlining support
299 #define NOINLINE __attribute__ ((noinline))
300 #define ALWAYSINLINE inline __attribute__ ((always_inline))
301
302 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_HPP
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