globalDefinitions_sparcWorks.hpp revision 7060:32b18c8f19fa 
1/*
2 * Copyright (c) 1997, 2011, 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_SPARCWORKS_HPP
26#define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_SPARCWORKS_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
35# include <ctype.h>
36# include <dirent.h>
37# include <string.h>
38# include <strings.h>     // for bsd'isms
39# include <stdarg.h>
40# include <stddef.h>      // for offsetof
41# include <stdio.h>
42# include <stdlib.h>
43# include <wchar.h>
44# include <stdarg.h>
45#ifdef SOLARIS
46# include <ieeefp.h>
47#endif
48# include <math.h>
49#ifdef LINUX
50#ifndef FP_PZERO
51  // Linux doesn't have positive/negative zero
52  #define FP_PZERO FP_ZERO
53#endif
54#ifndef fpclass
55  #define fpclass fpclassify
56#endif
57#endif
58# include <time.h>
59# include <fcntl.h>
60# include <dlfcn.h>
61# include <pthread.h>
62#ifdef SOLARIS
63# include <thread.h>
64#endif
65# include <limits.h>
66# 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
74# ifdef SOLARIS_MUTATOR_LIBTHREAD
75# include <sys/procfs.h>
76# endif
77
78#include <inttypes.h>
79
80// Solaris 8 doesn't provide definitions of these
81#ifdef SOLARIS
82#ifndef PRIdPTR
83#if defined(_LP64)
84#define PRIdPTR                 "ld"
85#define PRIuPTR                 "lu"
86#define PRIxPTR                 "lx"
87#else
88#define PRIdPTR                 "d"
89#define PRIuPTR                 "u"
90#define PRIxPTR                 "x"
91#endif
92#endif
93#endif
94
95#ifdef LINUX
96# include <signal.h>
97# include <ucontext.h>
98# include <sys/time.h>
99#endif
100
101
102// 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures
103// When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in
104// system header files.  On 32-bit architectures, there is no problem.
105// On 64-bit architectures, defining NULL as a 32-bit constant can cause
106// problems with varargs functions: C++ integral promotion rules say for
107// varargs, we pass the argument 0 as an int.  So, if NULL was passed to a
108// varargs function it will remain 32-bits.  Depending on the calling
109// convention of the machine, if the argument is passed on the stack then
110// only 32-bits of the "NULL" pointer may be initialized to zero.  The
111// other 32-bits will be garbage.  If the varargs function is expecting a
112// pointer when it extracts the argument, then we have a problem.
113//
114// Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0.
115//
116// Note: this fix doesn't work well on Linux because NULL will be overwritten
117// whenever a system header file is included. Linux handles NULL correctly
118// through a special type '__null'.
119#ifdef SOLARIS
120#ifdef _LP64
121#undef NULL
122#define NULL 0L
123#else
124#ifndef NULL
125#define NULL 0
126#endif
127#endif
128#endif
129
130// NULL vs NULL_WORD:
131// On Linux NULL is defined as a special type '__null'. Assigning __null to
132// integer variable will cause gcc warning. Use NULL_WORD in places where a
133// pointer is stored as integer value. On some platforms, sizeof(intptr_t) >
134// sizeof(void*), so here we want something which is integer type, but has the
135// same size as a pointer.
136#ifdef LINUX
137  #ifdef _LP64
138    #define NULL_WORD  0L
139  #else
140    // Cast 0 to intptr_t rather than int32_t since they are not the same type
141    // on some platforms.
142    #define NULL_WORD  ((intptr_t)0)
143  #endif
144#else
145  #define NULL_WORD  NULL
146#endif
147
148#ifndef LINUX
149// Compiler-specific primitive types
150typedef unsigned short     uint16_t;
151#ifndef _UINT32_T
152#define _UINT32_T
153typedef unsigned int       uint32_t;
154#endif
155#if !defined(_SYS_INT_TYPES_H)
156#ifndef _UINT64_T
157#define _UINT64_T
158typedef unsigned long long uint64_t;
159#endif
160// %%%% how to access definition of intptr_t portably in 5.5 onward?
161typedef int                     intptr_t;
162typedef unsigned int            uintptr_t;
163// If this gets an error, figure out a symbol XXX that implies the
164// prior definition of intptr_t, and add "&& !defined(XXX)" above.
165#endif
166#endif
167
168// On solaris 8, UINTPTR_MAX is defined as empty.
169// Everywhere else it's an actual value.
170#if UINTPTR_MAX - 1 == -1
171#undef UINTPTR_MAX
172#ifdef _LP64
173#define UINTPTR_MAX UINT64_MAX
174#else
175#define UINTPTR_MAX UINT32_MAX
176#endif /* ifdef _LP64 */
177#endif
178
179// Additional Java basic types
180
181typedef unsigned char      jubyte;
182typedef unsigned short     jushort;
183typedef unsigned int       juint;
184typedef unsigned long long julong;
185
186
187//----------------------------------------------------------------------------------------------------
188// Constant for jlong (specifying an long long constant is C++ compiler specific)
189
190// Build a 64bit integer constant
191#define CONST64(x)  (x ## LL)
192#define UCONST64(x) (x ## ULL)
193
194const jlong min_jlong = CONST64(0x8000000000000000);
195const jlong max_jlong = CONST64(0x7fffffffffffffff);
196
197#ifdef SOLARIS
198//----------------------------------------------------------------------------------------------------
199// ANSI C++ fixes
200// NOTE:In the ANSI committee's continuing attempt to make each version
201// of C++ incompatible with the previous version, you can no longer cast
202// pointers to functions without specifying linkage unless you want to get
203// warnings.
204//
205// This also means that pointers to functions can no longer be "hidden"
206// in opaque types like void * because at the invokation point warnings
207// will be generated. While this makes perfect sense from a type safety
208// point of view it causes a lot of warnings on old code using C header
209// files. Here are some typedefs to make the job of silencing warnings
210// a bit easier.
211//
212// The final kick in the teeth is that you can only have extern "C" linkage
213// specified at file scope. So these typedefs are here rather than in the
214// .hpp for the class (os:Solaris usually) that needs them.
215
216extern "C" {
217   typedef int (*int_fnP_thread_t_iP_uP_stack_tP_gregset_t)(thread_t, int*, unsigned *, stack_t*, gregset_t);
218   typedef int (*int_fnP_thread_t_i_gregset_t)(thread_t, int, gregset_t);
219   typedef int (*int_fnP_thread_t_i)(thread_t, int);
220   typedef int (*int_fnP_thread_t)(thread_t);
221
222   typedef int (*int_fnP_cond_tP_mutex_tP_timestruc_tP)(cond_t *cv, mutex_t *mx, timestruc_t *abst);
223   typedef int (*int_fnP_cond_tP_mutex_tP)(cond_t *cv, mutex_t *mx);
224
225   // typedef for missing API in libc
226   typedef int (*int_fnP_mutex_tP_i_vP)(mutex_t *, int, void *);
227   typedef int (*int_fnP_mutex_tP)(mutex_t *);
228   typedef int (*int_fnP_cond_tP_i_vP)(cond_t *cv, int scope, void *arg);
229   typedef int (*int_fnP_cond_tP)(cond_t *cv);
230};
231#endif
232
233//----------------------------------------------------------------------------------------------------
234// Debugging
235
236#define DEBUG_EXCEPTION ::abort();
237
238extern "C" void breakpoint();
239#define BREAKPOINT ::breakpoint()
240
241// checking for nanness
242#ifdef SOLARIS
243#ifdef SPARC
244inline int g_isnan(float  f) { return isnanf(f); }
245#else
246// isnanf() broken on Intel Solaris use isnand()
247inline int g_isnan(float  f) { return isnand(f); }
248#endif
249
250inline int g_isnan(double f) { return isnand(f); }
251#elif LINUX
252inline int g_isnan(float  f) { return isnanf(f); }
253inline int g_isnan(double f) { return isnan(f); }
254#else
255#error "missing platform-specific definition here"
256#endif
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// Portability macros
269#define PRAGMA_INTERFACE
270#define PRAGMA_IMPLEMENTATION
271#define PRAGMA_IMPLEMENTATION_(arg)
272#define VALUE_OBJ_CLASS_SPEC    : public _ValueObj
273
274// Formatting.
275#ifdef _LP64
276#define FORMAT64_MODIFIER "l"
277#else // !_LP64
278#define FORMAT64_MODIFIER "ll"
279#endif // _LP64
280
281#define offset_of(klass,field) offsetof(klass,field)
282
283#endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_SPARCWORKS_HPP
284