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comparison src/share/vm/utilities/globalDefinitions_sparcWorks.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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1 /*
2 * Copyright 1997-2007 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 # include <ieeefp.h>
41 # include <math.h>
42 # include <time.h>
43 # include <fcntl.h>
44 # include <dlfcn.h>
45 # include <pthread.h>
46 # include <thread.h>
47 # include <limits.h>
48 # include <errno.h>
49 # include <sys/trap.h>
50 # include <sys/regset.h>
51 # include <sys/procset.h>
52 # include <ucontext.h>
53 # include <setjmp.h>
54 # ifdef SOLARIS_MUTATOR_LIBTHREAD
55 # include <sys/procfs.h>
56 # endif
57
58 // 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures
59 // When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in
60 // system header files. On 32-bit architectures, there is no problem.
61 // On 64-bit architectures, defining NULL as a 32-bit constant can cause
62 // problems with varargs functions: C++ integral promotion rules say for
63 // varargs, we pass the argument 0 as an int. So, if NULL was passed to a
64 // varargs function it will remain 32-bits. Depending on the calling
65 // convention of the machine, if the argument is passed on the stack then
66 // only 32-bits of the "NULL" pointer may be initialized to zero. The
67 // other 32-bits will be garbage. If the varargs function is expecting a
68 // pointer when it extracts the argument, then we have a problem.
69 //
70 // Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0.
71 #ifdef _LP64
72 #undef NULL
73 #define NULL 0L
74 #else
75 #ifndef NULL
76 #define NULL 0
77 #endif
78 #endif
79
80 // NULL vs NULL_WORD:
81 // On Linux NULL is defined as a special type '__null'. Assigning __null to
82 // integer variable will cause gcc warning. Use NULL_WORD in places where a
83 // pointer is stored as integer value.
84 #define NULL_WORD NULL
85
86 // Compiler-specific primitive types
87 typedef unsigned short uint16_t;
88 #ifndef _UINT32_T
89 #define _UINT32_T
90 typedef unsigned int uint32_t;
91 #endif
92 #if !defined(_SYS_INT_TYPES_H)
93 #ifndef _UINT64_T
94 #define _UINT64_T
95 typedef unsigned long long uint64_t;
96 #endif
97 // %%%% how to access definition of intptr_t portably in 5.5 onward?
98 typedef int intptr_t;
99 typedef unsigned int uintptr_t;
100 // If this gets an error, figure out a symbol XXX that implies the
101 // prior definition of intptr_t, and add "&& !defined(XXX)" above.
102 #endif
103
104 // Additional Java basic types
105
106 typedef unsigned char jubyte;
107 typedef unsigned short jushort;
108 typedef unsigned int juint;
109 typedef unsigned long long julong;
110
111 //----------------------------------------------------------------------------------------------------
112 // Special (possibly not-portable) casts
113 // Cast floats into same-size integers and vice-versa w/o changing bit-pattern
114
115 inline jint jint_cast (jfloat x) { return *(jint* )&x; }
116 inline jlong jlong_cast (jdouble x) { return *(jlong* )&x; }
117
118 inline jfloat jfloat_cast (jint x) { return *(jfloat* )&x; }
119 inline jdouble jdouble_cast(jlong x) { return *(jdouble*)&x; }
120
121 //----------------------------------------------------------------------------------------------------
122 // Constant for jlong (specifying an long long constant is C++ compiler specific)
123
124 // Build a 64bit integer constant
125 #define CONST64(x) (x ## LL)
126 #define UCONST64(x) (x ## ULL)
127
128 const jlong min_jlong = CONST64(0x8000000000000000);
129 const jlong max_jlong = CONST64(0x7fffffffffffffff);
130
131
132 //----------------------------------------------------------------------------------------------------
133 // ANSI C++ fixes
134 // NOTE:In the ANSI committee's continuing attempt to make each version
135 // of C++ incompatible with the previous version, you can no longer cast
136 // pointers to functions without specifying linkage unless you want to get
137 // warnings.
138 //
139 // This also means that pointers to functions can no longer be "hidden"
140 // in opaque types like void * because at the invokation point warnings
141 // will be generated. While this makes perfect sense from a type safety
142 // point of view it causes a lot of warnings on old code using C header
143 // files. Here are some typedefs to make the job of silencing warnings
144 // a bit easier.
145 //
146 // The final kick in the teeth is that you can only have extern "C" linkage
147 // specified at file scope. So these typedefs are here rather than in the
148 // .hpp for the class (os:Solaris usually) that needs them.
149
150 extern "C" {
151 typedef int (*int_fnP_thread_t_iP_uP_stack_tP_gregset_t)(thread_t, int*, unsigned *, stack_t*, gregset_t);
152 typedef int (*int_fnP_thread_t_i_gregset_t)(thread_t, int, gregset_t);
153 typedef int (*int_fnP_thread_t_i)(thread_t, int);
154 typedef int (*int_fnP_thread_t)(thread_t);
155
156 typedef int (*int_fnP_cond_tP_mutex_tP_timestruc_tP)(cond_t *cv, mutex_t *mx, timestruc_t *abst);
157 typedef int (*int_fnP_cond_tP_mutex_tP)(cond_t *cv, mutex_t *mx);
158
159 // typedef for missing API in libc
160 typedef int (*int_fnP_mutex_tP_i_vP)(mutex_t *, int, void *);
161 typedef int (*int_fnP_mutex_tP)(mutex_t *);
162 typedef int (*int_fnP_cond_tP_i_vP)(cond_t *cv, int scope, void *arg);
163 typedef int (*int_fnP_cond_tP)(cond_t *cv);
164 };
165
166
167 //----------------------------------------------------------------------------------------------------
168 // Debugging
169
170 #define DEBUG_EXCEPTION ::abort();
171
172 extern "C" void breakpoint();
173 #define BREAKPOINT ::breakpoint()
174
175 // checking for nanness
176
177 #ifdef SPARC
178 inline int g_isnan(float f) { return isnanf(f); }
179 #else
180 // isnanf() broken on Intel Solaris use isnand()
181 inline int g_isnan(float f) { return isnand(f); }
182 #endif
183
184 inline int g_isnan(double f) { return isnand(f); }
185
186 // Checking for finiteness
187
188 inline int g_isfinite(jfloat f) { return finite(f); }
189 inline int g_isfinite(jdouble f) { return finite(f); }
190
191
192 // Wide characters
193
194 inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); }
195
196
197 // Misc
198 int local_vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr);
199 #define vsnprintf local_vsnprintf
200
201
202 // Portability macros
203 #define PRAGMA_INTERFACE
204 #define PRAGMA_IMPLEMENTATION
205 #define PRAGMA_IMPLEMENTATION_(arg)
206 #define VALUE_OBJ_CLASS_SPEC : public _ValueObj
207
208 // Formatting.
209 #ifdef _LP64
210 #define FORMAT64_MODIFIER "l"
211 #else // !_LP64
212 #define FORMAT64_MODIFIER "ll"
213 #endif // _LP64
214
215 #define offset_of(klass,field) offsetof(klass,field)