globalDefinitions_sparcWorks.hpp revision 512:db4caa99ef11 
1/*
2 * Copyright 1997-2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25// This file holds compiler-dependent includes,
26// globally used constants & types, class (forward)
27// declarations and a few frequently used utility functions.
28
29
30# include <ctype.h>
31# include <dirent.h>
32# include <string.h>
33# include <strings.h>     // for bsd'isms
34# include <stdarg.h>
35# include <stddef.h>      // for offsetof
36# include <stdio.h>
37# include <stdlib.h>
38# include <wchar.h>
39# include <stdarg.h>
40#ifdef SOLARIS
41# include <ieeefp.h>
42#endif
43# include <math.h>
44#ifdef LINUX
45#ifndef FP_PZERO
46  // Linux doesn't have positive/negative zero
47  #define FP_PZERO FP_ZERO
48#endif
49#ifndef fpclass
50  #define fpclass fpclassify
51#endif
52#endif
53# include <time.h>
54# include <fcntl.h>
55# include <dlfcn.h>
56# include <pthread.h>
57#ifdef SOLARIS
58# include <thread.h>
59#endif
60# include <limits.h>
61# include <errno.h>
62#ifdef SOLARIS
63# include <sys/trap.h>
64# include <sys/regset.h>
65# include <sys/procset.h>
66# include <ucontext.h>
67# include <setjmp.h>
68#endif
69# ifdef SOLARIS_MUTATOR_LIBTHREAD
70# include <sys/procfs.h>
71# endif
72#ifdef LINUX
73# include <inttypes.h>
74# include <signal.h>
75# include <ucontext.h>
76# include <sys/time.h>
77#endif
78
79
80// 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures
81// When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in
82// system header files.  On 32-bit architectures, there is no problem.
83// On 64-bit architectures, defining NULL as a 32-bit constant can cause
84// problems with varargs functions: C++ integral promotion rules say for
85// varargs, we pass the argument 0 as an int.  So, if NULL was passed to a
86// varargs function it will remain 32-bits.  Depending on the calling
87// convention of the machine, if the argument is passed on the stack then
88// only 32-bits of the "NULL" pointer may be initialized to zero.  The
89// other 32-bits will be garbage.  If the varargs function is expecting a
90// pointer when it extracts the argument, then we have a problem.
91//
92// Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0.
93//
94// Note: this fix doesn't work well on Linux because NULL will be overwritten
95// whenever a system header file is included. Linux handles NULL correctly
96// through a special type '__null'.
97#ifdef SOLARIS
98#ifdef _LP64
99#undef NULL
100#define NULL 0L
101#else
102#ifndef NULL
103#define NULL 0
104#endif
105#endif
106#endif
107
108// NULL vs NULL_WORD:
109// On Linux NULL is defined as a special type '__null'. Assigning __null to
110// integer variable will cause gcc warning. Use NULL_WORD in places where a
111// pointer is stored as integer value. On some platforms, sizeof(intptr_t) >
112// sizeof(void*), so here we want something which is integer type, but has the
113// same size as a pointer.
114#ifdef LINUX
115  #ifdef _LP64
116    #define NULL_WORD  0L
117  #else
118    // Cast 0 to intptr_t rather than int32_t since they are not the same type
119    // on some platforms.
120    #define NULL_WORD  ((intptr_t)0)
121  #endif
122#else
123  #define NULL_WORD  NULL
124#endif
125
126#ifndef LINUX
127// Compiler-specific primitive types
128typedef unsigned short     uint16_t;
129#ifndef _UINT32_T
130#define _UINT32_T
131typedef unsigned int       uint32_t;
132#endif
133#if !defined(_SYS_INT_TYPES_H)
134#ifndef _UINT64_T
135#define _UINT64_T
136typedef unsigned long long uint64_t;
137#endif
138// %%%% how to access definition of intptr_t portably in 5.5 onward?
139typedef int                     intptr_t;
140typedef unsigned int            uintptr_t;
141// If this gets an error, figure out a symbol XXX that implies the
142// prior definition of intptr_t, and add "&& !defined(XXX)" above.
143#endif
144#endif
145
146// Additional Java basic types
147
148typedef unsigned char      jubyte;
149typedef unsigned short     jushort;
150typedef unsigned int       juint;
151typedef unsigned long long julong;
152
153//----------------------------------------------------------------------------------------------------
154// Special (possibly not-portable) casts
155// Cast floats into same-size integers and vice-versa w/o changing bit-pattern
156
157inline jint    jint_cast   (jfloat  x)           { return *(jint*   )&x; }
158inline jlong   jlong_cast  (jdouble x)           { return *(jlong*  )&x; }
159
160inline jfloat  jfloat_cast (jint    x)           { return *(jfloat* )&x; }
161inline jdouble jdouble_cast(jlong   x)           { return *(jdouble*)&x; }
162
163//----------------------------------------------------------------------------------------------------
164// Constant for jlong (specifying an long long constant is C++ compiler specific)
165
166// Build a 64bit integer constant
167#define CONST64(x)  (x ## LL)
168#define UCONST64(x) (x ## ULL)
169
170const jlong min_jlong = CONST64(0x8000000000000000);
171const jlong max_jlong = CONST64(0x7fffffffffffffff);
172
173#ifdef SOLARIS
174//----------------------------------------------------------------------------------------------------
175// ANSI C++ fixes
176// NOTE:In the ANSI committee's continuing attempt to make each version
177// of C++ incompatible with the previous version, you can no longer cast
178// pointers to functions without specifying linkage unless you want to get
179// warnings.
180//
181// This also means that pointers to functions can no longer be "hidden"
182// in opaque types like void * because at the invokation point warnings
183// will be generated. While this makes perfect sense from a type safety
184// point of view it causes a lot of warnings on old code using C header
185// files. Here are some typedefs to make the job of silencing warnings
186// a bit easier.
187//
188// The final kick in the teeth is that you can only have extern "C" linkage
189// specified at file scope. So these typedefs are here rather than in the
190// .hpp for the class (os:Solaris usually) that needs them.
191
192extern "C" {
193   typedef int (*int_fnP_thread_t_iP_uP_stack_tP_gregset_t)(thread_t, int*, unsigned *, stack_t*, gregset_t);
194   typedef int (*int_fnP_thread_t_i_gregset_t)(thread_t, int, gregset_t);
195   typedef int (*int_fnP_thread_t_i)(thread_t, int);
196   typedef int (*int_fnP_thread_t)(thread_t);
197
198   typedef int (*int_fnP_cond_tP_mutex_tP_timestruc_tP)(cond_t *cv, mutex_t *mx, timestruc_t *abst);
199   typedef int (*int_fnP_cond_tP_mutex_tP)(cond_t *cv, mutex_t *mx);
200
201   // typedef for missing API in libc
202   typedef int (*int_fnP_mutex_tP_i_vP)(mutex_t *, int, void *);
203   typedef int (*int_fnP_mutex_tP)(mutex_t *);
204   typedef int (*int_fnP_cond_tP_i_vP)(cond_t *cv, int scope, void *arg);
205   typedef int (*int_fnP_cond_tP)(cond_t *cv);
206};
207#endif
208
209//----------------------------------------------------------------------------------------------------
210// Debugging
211
212#define DEBUG_EXCEPTION ::abort();
213
214extern "C" void breakpoint();
215#define BREAKPOINT ::breakpoint()
216
217// checking for nanness
218#ifdef SOLARIS
219#ifdef SPARC
220inline int g_isnan(float  f) { return isnanf(f); }
221#else
222// isnanf() broken on Intel Solaris use isnand()
223inline int g_isnan(float  f) { return isnand(f); }
224#endif
225
226inline int g_isnan(double f) { return isnand(f); }
227#elif LINUX
228inline int g_isnan(float  f) { return isnanf(f); }
229inline int g_isnan(double f) { return isnan(f); }
230#else
231#error "missing platform-specific definition here"
232#endif
233
234// Checking for finiteness
235
236inline int g_isfinite(jfloat  f)                 { return finite(f); }
237inline int g_isfinite(jdouble f)                 { return finite(f); }
238
239
240// Wide characters
241
242inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); }
243
244
245// Misc
246// NOTE: This one leads to an infinite recursion on Linux
247#ifndef LINUX
248int local_vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr);
249#define vsnprintf local_vsnprintf
250#endif
251
252// Portability macros
253#define PRAGMA_INTERFACE
254#define PRAGMA_IMPLEMENTATION
255#define PRAGMA_IMPLEMENTATION_(arg)
256#define VALUE_OBJ_CLASS_SPEC    : public _ValueObj
257
258// Formatting.
259#ifdef _LP64
260#define FORMAT64_MODIFIER "l"
261#else // !_LP64
262#define FORMAT64_MODIFIER "ll"
263#endif // _LP64
264
265#define offset_of(klass,field) offsetof(klass,field)
266