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 #ifdef LINUX
78 # include <inttypes.h>
79 # include <signal.h>
80 # include <ucontext.h>
81 # include <sys/time.h>
82 #endif
83
84
85 // 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures
86 // When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in
87 // system header files. On 32-bit architectures, there is no problem.
88 // On 64-bit architectures, defining NULL as a 32-bit constant can cause
89 // problems with varargs functions: C++ integral promotion rules say for
90 // varargs, we pass the argument 0 as an int. So, if NULL was passed to a
91 // varargs function it will remain 32-bits. Depending on the calling
92 // convention of the machine, if the argument is passed on the stack then
93 // only 32-bits of the "NULL" pointer may be initialized to zero. The
94 // other 32-bits will be garbage. If the varargs function is expecting a
95 // pointer when it extracts the argument, then we have a problem.
96 //
97 // Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0.
98 //
99 // Note: this fix doesn't work well on Linux because NULL will be overwritten
100 // whenever a system header file is included. Linux handles NULL correctly
101 // through a special type '__null'.
102 #ifdef SOLARIS
103 #ifdef _LP64
104 #undef NULL
105 #define NULL 0L
106 #else
107 #ifndef NULL
108 #define NULL 0
109 #endif
110 #endif
111 #endif
112
113 // NULL vs NULL_WORD:
114 // On Linux NULL is defined as a special type '__null'. Assigning __null to
115 // integer variable will cause gcc warning. Use NULL_WORD in places where a
116 // pointer is stored as integer value. On some platforms, sizeof(intptr_t) >
117 // sizeof(void*), so here we want something which is integer type, but has the
118 // same size as a pointer.
119 #ifdef LINUX
120 #ifdef _LP64
121 #define NULL_WORD 0L
122 #else
123 // Cast 0 to intptr_t rather than int32_t since they are not the same type
124 // on some platforms.
125 #define NULL_WORD ((intptr_t)0)
126 #endif
127 #else
128 #define NULL_WORD NULL
129 #endif
130
131 #ifndef LINUX
132 // Compiler-specific primitive types
133 typedef unsigned short uint16_t;
134 #ifndef _UINT32_T
135 #define _UINT32_T
136 typedef unsigned int uint32_t;
137 #endif
138 #if !defined(_SYS_INT_TYPES_H)
139 #ifndef _UINT64_T
140 #define _UINT64_T
141 typedef unsigned long long uint64_t;
142 #endif
143 // %%%% how to access definition of intptr_t portably in 5.5 onward?
144 typedef int intptr_t;
145 typedef unsigned int uintptr_t;
146 // If this gets an error, figure out a symbol XXX that implies the
147 // prior definition of intptr_t, and add "&& !defined(XXX)" above.
148 #endif
149 #endif
150
151 // On solaris 8, UINTPTR_MAX is defined as empty.
152 // Everywhere else it's an actual value.
153 #if UINTPTR_MAX - 1 == -1
154 #undef UINTPTR_MAX
155 #ifdef _LP64
156 #define UINTPTR_MAX UINT64_MAX
157 #else
158 #define UINTPTR_MAX UINT32_MAX
159 #endif /* ifdef _LP64 */
160 #endif
161
162 // Additional Java basic types
163
164 typedef unsigned char jubyte;
165 typedef unsigned short jushort;
166 typedef unsigned int juint;
167 typedef unsigned long long julong;
168
169 //----------------------------------------------------------------------------------------------------
170 // Special (possibly not-portable) casts
171 // Cast floats into same-size integers and vice-versa w/o changing bit-pattern
172
173 inline jint jint_cast (jfloat x) { return *(jint* )&x; }
174 inline jlong jlong_cast (jdouble x) { return *(jlong* )&x; }
175
176 inline jfloat jfloat_cast (jint x) { return *(jfloat* )&x; }
177 inline jdouble jdouble_cast(jlong x) { return *(jdouble*)&x; }
178
179 //----------------------------------------------------------------------------------------------------
180 // Constant for jlong (specifying an long long constant is C++ compiler specific)
181
182 // Build a 64bit integer constant
183 #define CONST64(x) (x ## LL)
184 #define UCONST64(x) (x ## ULL)
185
186 const jlong min_jlong = CONST64(0x8000000000000000);
187 const jlong max_jlong = CONST64(0x7fffffffffffffff);
188
189 #ifdef SOLARIS
190 //----------------------------------------------------------------------------------------------------
191 // ANSI C++ fixes
192 // NOTE:In the ANSI committee's continuing attempt to make each version
193 // of C++ incompatible with the previous version, you can no longer cast
194 // pointers to functions without specifying linkage unless you want to get
195 // warnings.
196 //
197 // This also means that pointers to functions can no longer be "hidden"
198 // in opaque types like void * because at the invokation point warnings
199 // will be generated. While this makes perfect sense from a type safety
200 // point of view it causes a lot of warnings on old code using C header
201 // files. Here are some typedefs to make the job of silencing warnings
202 // a bit easier.
203 //
204 // The final kick in the teeth is that you can only have extern "C" linkage
205 // specified at file scope. So these typedefs are here rather than in the
206 // .hpp for the class (os:Solaris usually) that needs them.
207
208 extern "C" {
209 typedef int (*int_fnP_thread_t_iP_uP_stack_tP_gregset_t)(thread_t, int*, unsigned *, stack_t*, gregset_t);
210 typedef int (*int_fnP_thread_t_i_gregset_t)(thread_t, int, gregset_t);
211 typedef int (*int_fnP_thread_t_i)(thread_t, int);
212 typedef int (*int_fnP_thread_t)(thread_t);
213
214 typedef int (*int_fnP_cond_tP_mutex_tP_timestruc_tP)(cond_t *cv, mutex_t *mx, timestruc_t *abst);
215 typedef int (*int_fnP_cond_tP_mutex_tP)(cond_t *cv, mutex_t *mx);
216
217 // typedef for missing API in libc
218 typedef int (*int_fnP_mutex_tP_i_vP)(mutex_t *, int, void *);
219 typedef int (*int_fnP_mutex_tP)(mutex_t *);
220 typedef int (*int_fnP_cond_tP_i_vP)(cond_t *cv, int scope, void *arg);
221 typedef int (*int_fnP_cond_tP)(cond_t *cv);
222 };
223 #endif
224
225 //----------------------------------------------------------------------------------------------------
226 // Debugging
227
228 #define DEBUG_EXCEPTION ::abort();
229
230 extern "C" void breakpoint();
231 #define BREAKPOINT ::breakpoint()
232
233 // checking for nanness
234 #ifdef SOLARIS
235 #ifdef SPARC
236 inline int g_isnan(float f) { return isnanf(f); }
237 #else
238 // isnanf() broken on Intel Solaris use isnand()
239 inline int g_isnan(float f) { return isnand(f); }
240 #endif
241
242 inline int g_isnan(double f) { return isnand(f); }
243 #elif LINUX
244 inline int g_isnan(float f) { return isnanf(f); }
245 inline int g_isnan(double f) { return isnan(f); }
246 #else
247 #error "missing platform-specific definition here"
248 #endif
249
250 // Checking for finiteness
251
252 inline int g_isfinite(jfloat f) { return finite(f); }
253 inline int g_isfinite(jdouble f) { return finite(f); }
254
255
256 // Wide characters
257
258 inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); }
259
260
261 // Misc
262 // NOTE: This one leads to an infinite recursion on Linux
263 #ifndef LINUX
264 int local_vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr);
265 #define vsnprintf local_vsnprintf
266 #endif
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