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ee9dd372 TT |
1 | // prims.cc - Code for core of runtime environment. |
2 | ||
2ba5f774 | 3 | /* Copyright (C) 1998, 1999, 2000 Free Software Foundation |
ee9dd372 TT |
4 | |
5 | This file is part of libgcj. | |
6 | ||
7 | This software is copyrighted work licensed under the terms of the | |
8 | Libgcj License. Please consult the file "LIBGCJ_LICENSE" for | |
9 | details. */ | |
10 | ||
11 | #include <config.h> | |
12 | ||
878885b4 TT |
13 | #ifdef USE_WIN32_SIGNALLING |
14 | #include <windows.h> | |
15 | #endif /* USE_WIN32_SIGNALLING */ | |
16 | ||
17 | #ifdef USE_WINSOCK | |
18 | #undef __INSIDE_CYGWIN__ | |
19 | #include <winsock.h> | |
20 | #endif /* USE_WINSOCK */ | |
21 | ||
ee9dd372 TT |
22 | #include <stdlib.h> |
23 | #include <stdarg.h> | |
24 | #include <stdio.h> | |
25 | #include <string.h> | |
9b0cb287 | 26 | #include <signal.h> |
ee9dd372 | 27 | |
283a159f AH |
28 | #ifdef HAVE_UNISTD_H |
29 | #include <unistd.h> | |
30 | #endif | |
31 | ||
27e934d8 | 32 | #include <gcj/cni.h> |
ee9dd372 | 33 | #include <jvm.h> |
a4e44caa | 34 | #include <java-signal.h> |
27e934d8 | 35 | #include <java-threads.h> |
ee9dd372 | 36 | |
54c2f04b AG |
37 | #ifdef ENABLE_JVMPI |
38 | #include <jvmpi.h> | |
39 | #endif | |
40 | ||
ffccc6be AG |
41 | #ifndef DISABLE_GETENV_PROPERTIES |
42 | #include <ctype.h> | |
43 | #include <java-props.h> | |
44 | #define PROCESS_GCJ_PROPERTIES process_gcj_properties() | |
45 | #else | |
46 | #define PROCESS_GCJ_PROPERTIES | |
47 | #endif // DISABLE_GETENV_PROPERTIES | |
48 | ||
ee9dd372 | 49 | #include <java/lang/Class.h> |
6aaeb975 | 50 | #include <java/lang/ClassLoader.h> |
ee9dd372 TT |
51 | #include <java/lang/Runtime.h> |
52 | #include <java/lang/String.h> | |
53 | #include <java/lang/Thread.h> | |
54 | #include <java/lang/ThreadGroup.h> | |
6cc96432 | 55 | #include <gnu/gcj/runtime/FirstThread.h> |
ee9dd372 | 56 | #include <java/lang/ArrayIndexOutOfBoundsException.h> |
a4e44caa | 57 | #include <java/lang/ArithmeticException.h> |
ee9dd372 | 58 | #include <java/lang/ClassFormatError.h> |
ee9dd372 TT |
59 | #include <java/lang/NegativeArraySizeException.h> |
60 | #include <java/lang/NullPointerException.h> | |
61 | #include <java/lang/OutOfMemoryError.h> | |
ee9dd372 TT |
62 | #include <java/lang/System.h> |
63 | #include <java/lang/reflect/Modifier.h> | |
64 | #include <java/io/PrintStream.h> | |
65 | ||
9096b279 TT |
66 | #ifdef USE_LTDL |
67 | #include <ltdl.h> | |
68 | #endif | |
a4e44caa | 69 | |
ee9dd372 TT |
70 | #define ObjectClass _CL_Q34java4lang6Object |
71 | extern java::lang::Class ObjectClass; | |
72 | ||
73 | // We allocate a single OutOfMemoryError exception which we keep | |
74 | // around for use if we run out of memory. | |
75 | static java::lang::OutOfMemoryError *no_memory; | |
76 | ||
77 | // Largest representable size_t. | |
78 | #define SIZE_T_MAX ((size_t) (~ (size_t) 0)) | |
79 | ||
b8c3c4f0 TT |
80 | // Properties set at compile time. |
81 | const char **_Jv_Compiler_Properties; | |
82 | ||
1a558147 AG |
83 | // The JAR file to add to the beginning of java.class.path. |
84 | const char *_Jv_Jar_Class_Path; | |
85 | ||
ffccc6be AG |
86 | #ifndef DISABLE_GETENV_PROPERTIES |
87 | // Property key/value pairs. | |
88 | property_pair *_Jv_Environment_Properties; | |
89 | #endif | |
283a159f AH |
90 | |
91 | // The name of this executable. | |
92 | static char * _Jv_execName; | |
93 | ||
54c2f04b AG |
94 | #ifdef ENABLE_JVMPI |
95 | // Pointer to JVMPI notification functions. | |
96 | void (*_Jv_JVMPI_Notify_OBJECT_ALLOC) (JVMPI_Event *event); | |
97 | void (*_Jv_JVMPI_Notify_THREAD_START) (JVMPI_Event *event); | |
98 | void (*_Jv_JVMPI_Notify_THREAD_END) (JVMPI_Event *event); | |
99 | #endif | |
ee9dd372 TT |
100 | \f |
101 | ||
6c80c45e TT |
102 | extern "C" void _Jv_ThrowSignal (void *) __attribute ((noreturn)); |
103 | ||
104 | // Just like _Jv_Throw, but fill in the stack trace first. Although | |
105 | // this is declared extern in order that its name not be mangled, it | |
106 | // is not intended to be used outside this file. | |
107 | void | |
108 | _Jv_ThrowSignal (void *e) | |
109 | { | |
110 | java::lang::Throwable *throwable = (java::lang::Throwable *)e; | |
111 | throwable->fillInStackTrace (); | |
112 | _Jv_Throw (throwable); | |
113 | } | |
114 | ||
01f78a02 AH |
115 | #ifdef HANDLE_SEGV |
116 | static java::lang::NullPointerException *nullp; | |
6c80c45e | 117 | |
01f78a02 AH |
118 | SIGNAL_HANDLER (catch_segv) |
119 | { | |
6c80c45e TT |
120 | MAKE_THROW_FRAME (nullp); |
121 | _Jv_ThrowSignal (nullp); | |
01f78a02 AH |
122 | } |
123 | #endif | |
124 | ||
01f78a02 | 125 | static java::lang::ArithmeticException *arithexception; |
d342a2e1 AH |
126 | |
127 | #ifdef HANDLE_FPE | |
01f78a02 AH |
128 | SIGNAL_HANDLER (catch_fpe) |
129 | { | |
554b61bb AH |
130 | #ifdef HANDLE_DIVIDE_OVERFLOW |
131 | HANDLE_DIVIDE_OVERFLOW; | |
132 | #else | |
6c80c45e | 133 | MAKE_THROW_FRAME (arithexception); |
554b61bb | 134 | #endif |
6c80c45e | 135 | _Jv_ThrowSignal (arithexception); |
01f78a02 AH |
136 | } |
137 | #endif | |
138 | ||
139 | \f | |
140 | ||
ee9dd372 TT |
141 | jboolean |
142 | _Jv_equalUtf8Consts (Utf8Const* a, Utf8Const *b) | |
143 | { | |
6c80c45e TT |
144 | int len; |
145 | _Jv_ushort *aptr, *bptr; | |
ee9dd372 TT |
146 | if (a == b) |
147 | return true; | |
148 | if (a->hash != b->hash) | |
149 | return false; | |
150 | len = a->length; | |
151 | if (b->length != len) | |
152 | return false; | |
153 | aptr = (_Jv_ushort *)a->data; | |
154 | bptr = (_Jv_ushort *)b->data; | |
155 | len = (len + 1) >> 1; | |
156 | while (--len >= 0) | |
157 | if (*aptr++ != *bptr++) | |
158 | return false; | |
159 | return true; | |
160 | } | |
161 | ||
162 | /* True iff A is equal to STR. | |
554b61bb | 163 | HASH is STR->hashCode(). |
ee9dd372 TT |
164 | */ |
165 | ||
166 | jboolean | |
167 | _Jv_equal (Utf8Const* a, jstring str, jint hash) | |
168 | { | |
169 | if (a->hash != (_Jv_ushort) hash) | |
170 | return false; | |
171 | jint len = str->length(); | |
172 | jint i = 0; | |
173 | jchar *sptr = _Jv_GetStringChars (str); | |
6c80c45e TT |
174 | unsigned char* ptr = (unsigned char*) a->data; |
175 | unsigned char* limit = ptr + a->length; | |
ee9dd372 | 176 | for (;; i++, sptr++) |
0f918fea TT |
177 | { |
178 | int ch = UTF8_GET (ptr, limit); | |
179 | if (i == len) | |
180 | return ch < 0; | |
181 | if (ch != *sptr) | |
182 | return false; | |
183 | } | |
184 | return true; | |
185 | } | |
186 | ||
187 | /* Like _Jv_equal, but stop after N characters. */ | |
188 | jboolean | |
189 | _Jv_equaln (Utf8Const *a, jstring str, jint n) | |
190 | { | |
191 | jint len = str->length(); | |
192 | jint i = 0; | |
193 | jchar *sptr = _Jv_GetStringChars (str); | |
6c80c45e TT |
194 | unsigned char* ptr = (unsigned char*) a->data; |
195 | unsigned char* limit = ptr + a->length; | |
0f918fea | 196 | for (; n-- > 0; i++, sptr++) |
ee9dd372 TT |
197 | { |
198 | int ch = UTF8_GET (ptr, limit); | |
199 | if (i == len) | |
200 | return ch < 0; | |
201 | if (ch != *sptr) | |
202 | return false; | |
203 | } | |
204 | return true; | |
205 | } | |
206 | ||
207 | /* Count the number of Unicode chars encoded in a given Ut8 string. */ | |
208 | int | |
209 | _Jv_strLengthUtf8(char* str, int len) | |
210 | { | |
6c80c45e TT |
211 | unsigned char* ptr; |
212 | unsigned char* limit; | |
ee9dd372 TT |
213 | int str_length; |
214 | ||
215 | ptr = (unsigned char*) str; | |
216 | limit = ptr + len; | |
217 | str_length = 0; | |
218 | for (; ptr < limit; str_length++) { | |
219 | if (UTF8_GET (ptr, limit) < 0) { | |
220 | return (-1); | |
221 | } | |
222 | } | |
223 | return (str_length); | |
224 | } | |
225 | ||
226 | /* Calculate a hash value for a string encoded in Utf8 format. | |
227 | * This returns the same hash value as specified or java.lang.String.hashCode. | |
228 | */ | |
229 | static jint | |
230 | hashUtf8String (char* str, int len) | |
231 | { | |
6c80c45e TT |
232 | unsigned char* ptr = (unsigned char*) str; |
233 | unsigned char* limit = ptr + len; | |
ee9dd372 TT |
234 | jint hash = 0; |
235 | ||
236 | for (; ptr < limit;) | |
237 | { | |
238 | int ch = UTF8_GET (ptr, limit); | |
239 | /* Updated specification from | |
240 | http://www.javasoft.com/docs/books/jls/clarify.html. */ | |
241 | hash = (31 * hash) + ch; | |
242 | } | |
243 | return hash; | |
244 | } | |
245 | ||
246 | _Jv_Utf8Const * | |
247 | _Jv_makeUtf8Const (char* s, int len) | |
248 | { | |
249 | if (len < 0) | |
250 | len = strlen (s); | |
251 | Utf8Const* m = (Utf8Const*) _Jv_AllocBytes (sizeof(Utf8Const) + len + 1); | |
252 | if (! m) | |
253 | JvThrow (no_memory); | |
254 | memcpy (m->data, s, len); | |
255 | m->data[len] = 0; | |
256 | m->length = len; | |
257 | m->hash = hashUtf8String (s, len) & 0xFFFF; | |
258 | return (m); | |
259 | } | |
260 | ||
58eb6e7c AG |
261 | _Jv_Utf8Const * |
262 | _Jv_makeUtf8Const (jstring string) | |
263 | { | |
264 | jint hash = string->hashCode (); | |
265 | jint len = _Jv_GetStringUTFLength (string); | |
266 | ||
267 | Utf8Const* m = (Utf8Const*) | |
268 | _Jv_AllocBytesChecked (sizeof(Utf8Const) + len + 1); | |
269 | ||
270 | m->hash = hash; | |
271 | m->length = len; | |
272 | ||
273 | _Jv_GetStringUTFRegion (string, 0, string->length (), m->data); | |
274 | m->data[len] = 0; | |
275 | ||
276 | return m; | |
277 | } | |
278 | ||
ee9dd372 TT |
279 | \f |
280 | ||
281 | #ifdef DEBUG | |
282 | void | |
283 | _Jv_Abort (const char *function, const char *file, int line, | |
284 | const char *message) | |
285 | #else | |
286 | void | |
287 | _Jv_Abort (const char *, const char *, int, const char *message) | |
288 | #endif | |
289 | { | |
290 | #ifdef DEBUG | |
291 | fprintf (stderr, | |
292 | "libgcj failure: %s\n in function %s, file %s, line %d\n", | |
293 | message, function, file, line); | |
294 | #else | |
295 | java::io::PrintStream *err = java::lang::System::err; | |
296 | err->print(JvNewStringLatin1 ("libgcj failure: ")); | |
297 | err->println(JvNewStringLatin1 (message)); | |
298 | err->flush(); | |
299 | #endif | |
300 | abort (); | |
301 | } | |
302 | ||
303 | static void | |
304 | fail_on_finalization (jobject) | |
305 | { | |
306 | JvFail ("object was finalized"); | |
307 | } | |
308 | ||
309 | void | |
310 | _Jv_GCWatch (jobject obj) | |
311 | { | |
312 | _Jv_RegisterFinalizer (obj, fail_on_finalization); | |
313 | } | |
314 | ||
315 | void | |
316 | _Jv_ThrowBadArrayIndex(jint bad_index) | |
317 | { | |
318 | JvThrow (new java::lang::ArrayIndexOutOfBoundsException | |
319 | (java::lang::String::valueOf(bad_index))); | |
320 | } | |
321 | ||
40f4ae32 TT |
322 | void |
323 | _Jv_ThrowNullPointerException () | |
324 | { | |
325 | throw new java::lang::NullPointerException (); | |
326 | } | |
327 | ||
ee9dd372 TT |
328 | // Allocate some unscanned memory and throw an exception if no memory. |
329 | void * | |
330 | _Jv_AllocBytesChecked (jsize size) | |
331 | { | |
332 | void *r = _Jv_AllocBytes (size); | |
333 | if (! r) | |
334 | _Jv_Throw (no_memory); | |
335 | return r; | |
336 | } | |
337 | ||
338 | // Allocate a new object of class C. SIZE is the size of the object | |
339 | // to allocate. You might think this is redundant, but it isn't; some | |
340 | // classes, such as String, aren't of fixed size. | |
341 | jobject | |
342 | _Jv_AllocObject (jclass c, jint size) | |
343 | { | |
344 | _Jv_InitClass (c); | |
345 | ||
346 | jobject obj = (jobject) _Jv_AllocObj (size); | |
9d4c2148 | 347 | if (__builtin_expect (! obj, false)) |
ee9dd372 TT |
348 | JvThrow (no_memory); |
349 | *((_Jv_VTable **) obj) = c->vtable; | |
350 | ||
351 | // If this class has inherited finalize from Object, then don't | |
352 | // bother registering a finalizer. We know that finalize() is the | |
353 | // very first method after the dummy entry. If this turns out to be | |
354 | // unreliable, a more robust implementation can be written. Such an | |
355 | // implementation would look for Object.finalize in Object's method | |
356 | // table at startup, and then use that information to find the | |
357 | // appropriate index in the method vector. | |
358 | if (c->vtable->method[1] != ObjectClass.vtable->method[1]) | |
359 | _Jv_RegisterFinalizer (obj, _Jv_FinalizeObject); | |
360 | ||
54c2f04b AG |
361 | #ifdef ENABLE_JVMPI |
362 | // Service JVMPI request. | |
363 | ||
9d4c2148 | 364 | if (__builtin_expect (_Jv_JVMPI_Notify_OBJECT_ALLOC != 0, false)) |
54c2f04b AG |
365 | { |
366 | JVMPI_Event event; | |
367 | ||
368 | event.event_type = JVMPI_EVENT_OBJECT_ALLOC; | |
369 | event.env_id = NULL; | |
370 | event.u.obj_alloc.arena_id = 0; | |
371 | event.u.obj_alloc.class_id = (jobjectID) c; | |
372 | event.u.obj_alloc.is_array = 0; | |
373 | event.u.obj_alloc.size = size; | |
374 | event.u.obj_alloc.obj_id = (jobjectID) obj; | |
375 | ||
376 | _Jv_DisableGC (); | |
377 | (*_Jv_JVMPI_Notify_OBJECT_ALLOC) (&event); | |
378 | _Jv_EnableGC (); | |
379 | } | |
380 | #endif | |
381 | ||
ee9dd372 TT |
382 | return obj; |
383 | } | |
384 | ||
385 | // Allocate a new array of Java objects. Each object is of type | |
386 | // `elementClass'. `init' is used to initialize each slot in the | |
387 | // array. | |
388 | jobjectArray | |
389 | _Jv_NewObjectArray (jsize count, jclass elementClass, jobject init) | |
390 | { | |
9d4c2148 | 391 | if (__builtin_expect (count < 0, false)) |
ee9dd372 TT |
392 | JvThrow (new java::lang::NegativeArraySizeException); |
393 | ||
93d45562 TT |
394 | JvAssert (! elementClass->isPrimitive ()); |
395 | ||
396 | jobjectArray obj = NULL; | |
397 | size_t size = (size_t) _Jv_GetArrayElementFromElementType (obj, | |
398 | elementClass); | |
399 | ||
ee9dd372 | 400 | // Check for overflow. |
1143c0a0 | 401 | if (__builtin_expect ((size_t) count > |
9d4c2148 | 402 | (SIZE_T_MAX - size) / sizeof (jobject), false)) |
ee9dd372 TT |
403 | JvThrow (no_memory); |
404 | ||
93d45562 | 405 | size += count * sizeof (jobject); |
58eb6e7c AG |
406 | |
407 | // FIXME: second argument should be "current loader" // | |
408 | jclass clas = _Jv_FindArrayClass (elementClass, 0); | |
409 | ||
93d45562 | 410 | obj = (jobjectArray) _Jv_AllocArray (size); |
9d4c2148 | 411 | if (__builtin_expect (! obj, false)) |
ee9dd372 TT |
412 | JvThrow (no_memory); |
413 | obj->length = count; | |
414 | jobject* ptr = elements(obj); | |
415 | // We know the allocator returns zeroed memory. So don't bother | |
416 | // zeroing it again. | |
417 | if (init) | |
418 | { | |
419 | while (--count >= 0) | |
420 | *ptr++ = init; | |
421 | } | |
422 | // Set the vtbl last to avoid problems if the GC happens during the | |
423 | // window in this function between the allocation and this | |
424 | // assignment. | |
425 | *((_Jv_VTable **) obj) = clas->vtable; | |
426 | return obj; | |
427 | } | |
428 | ||
429 | // Allocate a new array of primitives. ELTYPE is the type of the | |
430 | // element, COUNT is the size of the array. | |
431 | jobject | |
432 | _Jv_NewPrimArray (jclass eltype, jint count) | |
433 | { | |
434 | int elsize = eltype->size(); | |
9d4c2148 | 435 | if (__builtin_expect (count < 0, false)) |
ee9dd372 TT |
436 | JvThrow (new java::lang::NegativeArraySizeException ()); |
437 | ||
93d45562 TT |
438 | JvAssert (eltype->isPrimitive ()); |
439 | jobject dummy = NULL; | |
440 | size_t size = (size_t) _Jv_GetArrayElementFromElementType (dummy, eltype); | |
441 | ||
ee9dd372 | 442 | // Check for overflow. |
1143c0a0 | 443 | if (__builtin_expect ((size_t) count > |
9d4c2148 | 444 | (SIZE_T_MAX - size) / elsize, false)) |
ee9dd372 TT |
445 | JvThrow (no_memory); |
446 | ||
93d45562 | 447 | __JArray *arr = (__JArray*) _Jv_AllocObj (size + elsize * count); |
9d4c2148 | 448 | if (__builtin_expect (! arr, false)) |
ee9dd372 TT |
449 | JvThrow (no_memory); |
450 | arr->length = count; | |
451 | // Note that we assume we are given zeroed memory by the allocator. | |
452 | ||
58eb6e7c | 453 | jclass klass = _Jv_FindArrayClass (eltype, 0); |
ee9dd372 TT |
454 | // Set the vtbl last to avoid problems if the GC happens during the |
455 | // window in this function between the allocation and this | |
456 | // assignment. | |
457 | *((_Jv_VTable **) arr) = klass->vtable; | |
458 | return arr; | |
459 | } | |
460 | ||
ee9dd372 TT |
461 | jobject |
462 | _Jv_NewArray (jint type, jint size) | |
463 | { | |
464 | switch (type) | |
465 | { | |
466 | case 4: return JvNewBooleanArray (size); | |
467 | case 5: return JvNewCharArray (size); | |
468 | case 6: return JvNewFloatArray (size); | |
469 | case 7: return JvNewDoubleArray (size); | |
470 | case 8: return JvNewByteArray (size); | |
471 | case 9: return JvNewShortArray (size); | |
472 | case 10: return JvNewIntArray (size); | |
473 | case 11: return JvNewLongArray (size); | |
474 | } | |
475 | JvFail ("newarray - bad type code"); | |
476 | return NULL; // Placate compiler. | |
477 | } | |
478 | ||
479 | jobject | |
480 | _Jv_NewMultiArray (jclass type, jint dimensions, jint *sizes) | |
481 | { | |
482 | JvAssert (type->isArray()); | |
483 | jclass element_type = type->getComponentType(); | |
484 | jobject result; | |
485 | if (element_type->isPrimitive()) | |
486 | result = _Jv_NewPrimArray (element_type, sizes[0]); | |
487 | else | |
488 | result = _Jv_NewObjectArray (sizes[0], element_type, NULL); | |
489 | ||
490 | if (dimensions > 1) | |
491 | { | |
492 | JvAssert (! element_type->isPrimitive()); | |
493 | JvAssert (element_type->isArray()); | |
494 | jobject *contents = elements ((jobjectArray) result); | |
495 | for (int i = 0; i < sizes[0]; ++i) | |
496 | contents[i] = _Jv_NewMultiArray (element_type, dimensions - 1, | |
497 | sizes + 1); | |
498 | } | |
499 | ||
500 | return result; | |
501 | } | |
502 | ||
503 | jobject | |
504 | _Jv_NewMultiArray (jclass array_type, jint dimensions, ...) | |
505 | { | |
506 | va_list args; | |
507 | jint sizes[dimensions]; | |
508 | va_start (args, dimensions); | |
509 | for (int i = 0; i < dimensions; ++i) | |
510 | { | |
511 | jint size = va_arg (args, jint); | |
512 | sizes[i] = size; | |
513 | } | |
514 | va_end (args); | |
515 | ||
516 | return _Jv_NewMultiArray (array_type, dimensions, sizes); | |
517 | } | |
518 | ||
519 | \f | |
520 | ||
ee9dd372 TT |
521 | class _Jv_PrimClass : public java::lang::Class |
522 | { | |
523 | public: | |
524 | // FIXME: calling convention is weird. If we use the natural types | |
525 | // then the compiler will complain because they aren't Java types. | |
c74e2214 | 526 | _Jv_PrimClass (jobject cname, jbyte sig, jint len, jobject array_vtable) |
ee9dd372 TT |
527 | { |
528 | using namespace java::lang::reflect; | |
529 | ||
530 | // We must initialize every field of the class. We do this in | |
531 | // the same order they are declared in Class.h. | |
532 | next = NULL; | |
533 | name = _Jv_makeUtf8Const ((char *) cname, -1); | |
534 | accflags = Modifier::PUBLIC | Modifier::FINAL; | |
535 | superclass = NULL; | |
536 | constants.size = 0; | |
537 | constants.tags = NULL; | |
538 | constants.data = NULL; | |
539 | methods = NULL; | |
540 | method_count = sig; | |
541 | vtable_method_count = 0; | |
542 | fields = NULL; | |
543 | size_in_bytes = len; | |
544 | field_count = 0; | |
545 | static_field_count = 0; | |
546 | vtable = JV_PRIMITIVE_VTABLE; | |
547 | interfaces = NULL; | |
548 | loader = NULL; | |
549 | interface_count = 0; | |
d655f87d | 550 | state = JV_STATE_DONE; |
ee9dd372 | 551 | thread = NULL; |
c74e2214 TT |
552 | |
553 | // Note that we have to set `methods' to NULL. | |
554 | if (sig != 'V') | |
555 | _Jv_FindArrayClass (this, NULL, (_Jv_VTable *) array_vtable); | |
ee9dd372 TT |
556 | } |
557 | }; | |
558 | ||
c74e2214 TT |
559 | // We use this to define both primitive classes and the vtables for |
560 | // arrays of primitive classes. The latter are given names so that we | |
561 | // can refer to them from the compiler, allowing us to construct | |
562 | // arrays of primitives statically. | |
ee9dd372 | 563 | #define DECLARE_PRIM_TYPE(NAME, SIG, LEN) \ |
c74e2214 TT |
564 | _Jv_ArrayVTable _Jv_##NAME##VTable; \ |
565 | _Jv_PrimClass _Jv_##NAME##Class((jobject) #NAME, (jbyte) SIG, (jint) LEN, \ | |
566 | (jobject) &_Jv_##NAME##VTable) | |
ee9dd372 TT |
567 | |
568 | DECLARE_PRIM_TYPE(byte, 'B', 1); | |
569 | DECLARE_PRIM_TYPE(short, 'S', 2); | |
570 | DECLARE_PRIM_TYPE(int, 'I', 4); | |
571 | DECLARE_PRIM_TYPE(long, 'J', 8); | |
572 | DECLARE_PRIM_TYPE(boolean, 'Z', 1); | |
573 | DECLARE_PRIM_TYPE(char, 'C', 2); | |
574 | DECLARE_PRIM_TYPE(float, 'F', 4); | |
575 | DECLARE_PRIM_TYPE(double, 'D', 8); | |
576 | DECLARE_PRIM_TYPE(void, 'V', 0); | |
577 | ||
578 | jclass | |
579 | _Jv_FindClassFromSignature (char *sig, java::lang::ClassLoader *loader) | |
580 | { | |
581 | switch (*sig) | |
582 | { | |
583 | case 'B': | |
584 | return JvPrimClass (byte); | |
585 | case 'S': | |
586 | return JvPrimClass (short); | |
587 | case 'I': | |
588 | return JvPrimClass (int); | |
589 | case 'J': | |
590 | return JvPrimClass (long); | |
591 | case 'Z': | |
592 | return JvPrimClass (boolean); | |
593 | case 'C': | |
594 | return JvPrimClass (char); | |
595 | case 'F': | |
596 | return JvPrimClass (float); | |
597 | case 'D': | |
598 | return JvPrimClass (double); | |
599 | case 'V': | |
600 | return JvPrimClass (void); | |
601 | case 'L': | |
602 | { | |
603 | int i; | |
604 | for (i = 1; sig[i] && sig[i] != ';'; ++i) | |
605 | ; | |
606 | _Jv_Utf8Const *name = _Jv_makeUtf8Const (&sig[1], i - 1); | |
607 | return _Jv_FindClass (name, loader); | |
58eb6e7c | 608 | |
ee9dd372 TT |
609 | } |
610 | case '[': | |
58eb6e7c AG |
611 | return _Jv_FindArrayClass (_Jv_FindClassFromSignature (&sig[1], loader), |
612 | loader); | |
ee9dd372 TT |
613 | } |
614 | JvFail ("couldn't understand class signature"); | |
615 | return NULL; // Placate compiler. | |
616 | } | |
617 | ||
618 | \f | |
619 | ||
620 | JArray<jstring> * | |
621 | JvConvertArgv (int argc, const char **argv) | |
622 | { | |
623 | if (argc < 0) | |
624 | argc = 0; | |
625 | jobjectArray ar = JvNewObjectArray(argc, &StringClass, NULL); | |
626 | jobject* ptr = elements(ar); | |
627 | for (int i = 0; i < argc; i++) | |
628 | { | |
629 | const char *arg = argv[i]; | |
630 | // FIXME - should probably use JvNewStringUTF. | |
631 | *ptr++ = JvNewStringLatin1(arg, strlen(arg)); | |
632 | } | |
633 | return (JArray<jstring>*) ar; | |
634 | } | |
635 | ||
636 | // FIXME: These variables are static so that they will be | |
637 | // automatically scanned by the Boehm collector. This is needed | |
638 | // because with qthreads the collector won't scan the initial stack -- | |
639 | // it will only scan the qthreads stacks. | |
640 | ||
641 | // Command line arguments. | |
642 | static jobject arg_vec; | |
643 | ||
ee9dd372 TT |
644 | // The primary thread. |
645 | static java::lang::Thread *main_thread; | |
646 | ||
283a159f AH |
647 | char * |
648 | _Jv_ThisExecutable (void) | |
649 | { | |
650 | return _Jv_execName; | |
651 | } | |
652 | ||
653 | void | |
654 | _Jv_ThisExecutable (const char *name) | |
655 | { | |
656 | if (name) | |
657 | { | |
658 | _Jv_execName = new char[strlen (name) + 1]; | |
659 | strcpy (_Jv_execName, name); | |
660 | } | |
661 | } | |
662 | ||
878885b4 TT |
663 | #ifdef USE_WIN32_SIGNALLING |
664 | ||
665 | extern "C" int* win32_get_restart_frame (void *); | |
666 | ||
667 | LONG CALLBACK | |
668 | win32_exception_handler (LPEXCEPTION_POINTERS e) | |
669 | { | |
670 | int* setjmp_buf; | |
671 | if (e->ExceptionRecord->ExceptionCode == EXCEPTION_ACCESS_VIOLATION) | |
672 | setjmp_buf = win32_get_restart_frame (nullp); | |
673 | else if (e->ExceptionRecord->ExceptionCode == EXCEPTION_INT_DIVIDE_BY_ZERO) | |
674 | setjmp_buf = win32_get_restart_frame (arithexception); | |
675 | else | |
676 | return EXCEPTION_CONTINUE_SEARCH; | |
677 | ||
678 | e->ContextRecord->Ebp = setjmp_buf[0]; | |
679 | // FIXME: Why does i386-signal.h increment the PC here, do we need to do it? | |
680 | e->ContextRecord->Eip = setjmp_buf[1]; | |
681 | // FIXME: Is this the stack pointer? Do we need it? | |
682 | e->ContextRecord->Esp = setjmp_buf[2]; | |
683 | ||
684 | return EXCEPTION_CONTINUE_EXECUTION; | |
685 | } | |
686 | ||
687 | #endif | |
688 | ||
9b0cb287 | 689 | static void |
283a159f | 690 | main_init () |
ee9dd372 | 691 | { |
01f78a02 | 692 | INIT_SEGV; |
d342a2e1 | 693 | #ifdef HANDLE_FPE |
01f78a02 | 694 | INIT_FPE; |
d342a2e1 AH |
695 | #else |
696 | arithexception = new java::lang::ArithmeticException | |
697 | (JvNewStringLatin1 ("/ by zero")); | |
698 | #endif | |
ee9dd372 TT |
699 | |
700 | no_memory = new java::lang::OutOfMemoryError; | |
701 | ||
9096b279 TT |
702 | #ifdef USE_LTDL |
703 | LTDL_SET_PRELOADED_SYMBOLS (); | |
704 | #endif | |
705 | ||
878885b4 TT |
706 | #ifdef USE_WINSOCK |
707 | // Initialise winsock for networking | |
708 | WSADATA data; | |
709 | if (WSAStartup (MAKEWORD (1, 1), &data)) | |
710 | MessageBox (NULL, "Error initialising winsock library.", "Error", MB_OK | MB_ICONEXCLAMATION); | |
711 | #endif /* USE_WINSOCK */ | |
712 | ||
713 | #ifdef USE_WIN32_SIGNALLING | |
714 | // Install exception handler | |
715 | SetUnhandledExceptionFilter (win32_exception_handler); | |
716 | #else | |
717 | // We only want this on POSIX systems. | |
9b0cb287 TT |
718 | struct sigaction act; |
719 | act.sa_handler = SIG_IGN; | |
720 | sigemptyset (&act.sa_mask); | |
721 | act.sa_flags = 0; | |
722 | sigaction (SIGPIPE, &act, NULL); | |
878885b4 | 723 | #endif /* USE_WIN32_SIGNALLING */ |
7e648cf9 TT |
724 | |
725 | _Jv_JNI_Init (); | |
9b0cb287 TT |
726 | } |
727 | ||
ffccc6be AG |
728 | #ifndef DISABLE_GETENV_PROPERTIES |
729 | ||
730 | static char * | |
731 | next_property_key (char *s, size_t *length) | |
732 | { | |
733 | size_t l = 0; | |
734 | ||
735 | JvAssert (s); | |
736 | ||
737 | // Skip over whitespace | |
738 | while (isspace (*s)) | |
739 | s++; | |
740 | ||
741 | // If we've reached the end, return NULL. Also return NULL if for | |
742 | // some reason we've come across a malformed property string. | |
743 | if (*s == 0 | |
744 | || *s == ':' | |
745 | || *s == '=') | |
746 | return NULL; | |
747 | ||
748 | // Determine the length of the property key. | |
749 | while (s[l] != 0 | |
750 | && ! isspace (s[l]) | |
751 | && s[l] != ':' | |
752 | && s[l] != '=') | |
753 | { | |
754 | if (s[l] == '\\' | |
755 | && s[l+1] != 0) | |
756 | l++; | |
757 | l++; | |
758 | } | |
759 | ||
760 | *length = l; | |
761 | ||
762 | return s; | |
763 | } | |
764 | ||
765 | static char * | |
766 | next_property_value (char *s, size_t *length) | |
767 | { | |
768 | size_t l = 0; | |
769 | ||
770 | JvAssert (s); | |
771 | ||
772 | while (isspace (*s)) | |
773 | s++; | |
774 | ||
775 | if (*s == ':' | |
776 | || *s == '=') | |
777 | s++; | |
778 | ||
779 | while (isspace (*s)) | |
780 | s++; | |
781 | ||
782 | // If we've reached the end, return NULL. | |
783 | if (*s == 0) | |
784 | return NULL; | |
785 | ||
786 | // Determine the length of the property value. | |
787 | while (s[l] != 0 | |
788 | && ! isspace (s[l]) | |
789 | && s[l] != ':' | |
790 | && s[l] != '=') | |
791 | { | |
792 | if (s[l] == '\\' | |
793 | && s[l+1] != 0) | |
794 | l += 2; | |
795 | else | |
796 | l++; | |
797 | } | |
798 | ||
799 | *length = l; | |
800 | ||
801 | return s; | |
802 | } | |
803 | ||
804 | static void | |
805 | process_gcj_properties () | |
806 | { | |
807 | char *props = getenv("GCJ_PROPERTIES"); | |
808 | char *p = props; | |
809 | size_t length; | |
810 | size_t property_count = 0; | |
811 | ||
812 | if (NULL == props) | |
813 | return; | |
814 | ||
815 | // Whip through props quickly in order to count the number of | |
816 | // property values. | |
817 | while (p && (p = next_property_key (p, &length))) | |
818 | { | |
819 | // Skip to the end of the key | |
820 | p += length; | |
821 | ||
822 | p = next_property_value (p, &length); | |
823 | if (p) | |
824 | p += length; | |
825 | ||
826 | property_count++; | |
827 | } | |
828 | ||
829 | // Allocate an array of property value/key pairs. | |
830 | _Jv_Environment_Properties = | |
831 | (property_pair *) malloc (sizeof(property_pair) | |
832 | * (property_count + 1)); | |
833 | ||
834 | // Go through the properties again, initializing _Jv_Properties | |
835 | // along the way. | |
836 | p = props; | |
837 | property_count = 0; | |
838 | while (p && (p = next_property_key (p, &length))) | |
839 | { | |
840 | _Jv_Environment_Properties[property_count].key = p; | |
841 | _Jv_Environment_Properties[property_count].key_length = length; | |
842 | ||
843 | // Skip to the end of the key | |
844 | p += length; | |
845 | ||
846 | p = next_property_value (p, &length); | |
847 | ||
848 | _Jv_Environment_Properties[property_count].value = p; | |
849 | _Jv_Environment_Properties[property_count].value_length = length; | |
850 | ||
851 | if (p) | |
852 | p += length; | |
853 | ||
854 | property_count++; | |
855 | } | |
856 | memset ((void *) &_Jv_Environment_Properties[property_count], | |
857 | 0, sizeof (property_pair)); | |
858 | { | |
859 | size_t i = 0; | |
860 | ||
861 | // Null terminate the strings. | |
862 | while (_Jv_Environment_Properties[i].key) | |
863 | { | |
864 | _Jv_Environment_Properties[i].key[_Jv_Environment_Properties[i].key_length] = 0; | |
865 | _Jv_Environment_Properties[i++].value[_Jv_Environment_Properties[i].value_length] = 0; | |
866 | } | |
867 | } | |
868 | } | |
869 | #endif // DISABLE_GETENV_PROPERTIES | |
870 | ||
9b0cb287 TT |
871 | void |
872 | JvRunMain (jclass klass, int argc, const char **argv) | |
873 | { | |
ffccc6be AG |
874 | PROCESS_GCJ_PROPERTIES; |
875 | ||
9b0cb287 | 876 | main_init (); |
283a159f AH |
877 | #ifdef HAVE_PROC_SELF_EXE |
878 | char exec_name[20]; | |
879 | sprintf (exec_name, "/proc/%d/exe", getpid ()); | |
880 | _Jv_ThisExecutable (exec_name); | |
881 | #else | |
882 | _Jv_ThisExecutable (argv[0]); | |
883 | #endif | |
9b0cb287 | 884 | |
eb4534a6 | 885 | arg_vec = JvConvertArgv (argc - 1, argv + 1); |
6dfd8a77 | 886 | main_thread = new gnu::gcj::runtime::FirstThread (klass, arg_vec); |
eb4534a6 KKT |
887 | |
888 | main_thread->start(); | |
889 | _Jv_ThreadWait (); | |
890 | ||
0f94c029 BM |
891 | int status = (int) java::lang::ThreadGroup::had_uncaught_exception; |
892 | ||
893 | java::lang::Runtime::getRuntime ()->exit (status); | |
eb4534a6 KKT |
894 | } |
895 | ||
896 | void | |
1a558147 | 897 | _Jv_RunMain (const char *name, int argc, const char **argv, bool is_jar) |
eb4534a6 | 898 | { |
1a558147 | 899 | jstring class_name; |
ffccc6be AG |
900 | PROCESS_GCJ_PROPERTIES; |
901 | ||
9b0cb287 | 902 | main_init (); |
ee9dd372 | 903 | |
04476544 AH |
904 | #ifdef HAVE_PROC_SELF_EXE |
905 | char exec_name[20]; | |
906 | sprintf (exec_name, "/proc/%d/exe", getpid ()); | |
907 | _Jv_ThisExecutable (exec_name); | |
908 | #endif | |
909 | ||
1a558147 AG |
910 | if (is_jar) |
911 | { | |
6aaeb975 AG |
912 | // name specifies a jar file. We must now extract the |
913 | // Main-Class attribute from the jar's manifest file. This is | |
914 | // done by gnu.gcj.runtime.FirstThread.main. | |
1a558147 AG |
915 | _Jv_Jar_Class_Path = strdup (name); |
916 | arg_vec = JvConvertArgv (1, &_Jv_Jar_Class_Path); | |
917 | ||
918 | main_thread = | |
919 | new gnu::gcj::runtime::FirstThread (&_CL_Q43gnu3gcj7runtime11FirstThread, | |
920 | arg_vec); | |
921 | main_thread->start(); | |
922 | _Jv_ThreadWait (); | |
923 | ||
6aaeb975 AG |
924 | // FirstThread.main extracts the main class name and stores it |
925 | // here. | |
1a558147 | 926 | class_name = gnu::gcj::runtime::FirstThread::jarMainClassName; |
6aaeb975 AG |
927 | |
928 | // We need a new ClassLoader because the classpath must be the | |
929 | // jar file only. The easiest way to do this is to lose our | |
930 | // reference to the previous classloader. | |
931 | java::lang::ClassLoader::system = NULL; | |
1a558147 AG |
932 | } |
933 | else | |
934 | class_name = JvNewStringLatin1 (name); | |
935 | ||
eb4534a6 | 936 | arg_vec = JvConvertArgv (argc - 1, argv + 1); |
ee9dd372 | 937 | |
1a558147 AG |
938 | if (class_name) |
939 | { | |
940 | main_thread = new gnu::gcj::runtime::FirstThread (class_name, arg_vec); | |
941 | main_thread->start(); | |
942 | _Jv_ThreadWait (); | |
943 | } | |
0f94c029 BM |
944 | |
945 | int status = (int) java::lang::ThreadGroup::had_uncaught_exception; | |
946 | ||
947 | java::lang::Runtime::getRuntime ()->exit (status); | |
ee9dd372 TT |
948 | } |
949 | ||
b8c3c4f0 TT |
950 | \f |
951 | ||
952 | // Parse a string and return a heap size. | |
953 | static size_t | |
954 | parse_heap_size (const char *spec) | |
955 | { | |
956 | char *end; | |
957 | unsigned long val = strtoul (spec, &end, 10); | |
3948f9d0 JS |
958 | if (*end == 'k' || *end == 'K') |
959 | val *= 1024; | |
960 | else if (*end == 'm' || *end == 'M') | |
961 | val *= 1048576; | |
b8c3c4f0 TT |
962 | return (size_t) val; |
963 | } | |
964 | ||
965 | // Set the initial heap size. This might be ignored by the GC layer. | |
966 | // This must be called before _Jv_RunMain. | |
967 | void | |
968 | _Jv_SetInitialHeapSize (const char *arg) | |
969 | { | |
970 | size_t size = parse_heap_size (arg); | |
971 | _Jv_GCSetInitialHeapSize (size); | |
972 | } | |
973 | ||
974 | // Set the maximum heap size. This might be ignored by the GC layer. | |
975 | // This must be called before _Jv_RunMain. | |
976 | void | |
977 | _Jv_SetMaximumHeapSize (const char *arg) | |
978 | { | |
979 | size_t size = parse_heap_size (arg); | |
980 | _Jv_GCSetMaximumHeapSize (size); | |
981 | } | |
58eb6e7c | 982 | |
ee9dd372 TT |
983 | \f |
984 | ||
7e648cf9 | 985 | void * |
ddf0fc6c | 986 | _Jv_Malloc (jsize size) |
7e648cf9 | 987 | { |
9d4c2148 | 988 | if (__builtin_expect (size == 0, false)) |
7e648cf9 | 989 | size = 1; |
ddf0fc6c | 990 | void *ptr = malloc ((size_t) size); |
9d4c2148 | 991 | if (__builtin_expect (ptr == NULL, false)) |
ddf0fc6c BM |
992 | JvThrow (no_memory); |
993 | return ptr; | |
7e648cf9 TT |
994 | } |
995 | ||
ee9dd372 | 996 | void * |
ddf0fc6c | 997 | _Jv_Realloc (void *ptr, jsize size) |
ee9dd372 | 998 | { |
9d4c2148 | 999 | if (__builtin_expect (size == 0, false)) |
ee9dd372 | 1000 | size = 1; |
ddf0fc6c | 1001 | ptr = realloc (ptr, (size_t) size); |
9d4c2148 | 1002 | if (__builtin_expect (ptr == NULL, false)) |
ee9dd372 TT |
1003 | JvThrow (no_memory); |
1004 | return ptr; | |
1005 | } | |
1006 | ||
ddf0fc6c BM |
1007 | void * |
1008 | _Jv_MallocUnchecked (jsize size) | |
1009 | { | |
9d4c2148 | 1010 | if (__builtin_expect (size == 0, false)) |
ddf0fc6c BM |
1011 | size = 1; |
1012 | return malloc ((size_t) size); | |
1013 | } | |
1014 | ||
ee9dd372 TT |
1015 | void |
1016 | _Jv_Free (void* ptr) | |
1017 | { | |
1018 | return free (ptr); | |
1019 | } | |
d342a2e1 AH |
1020 | |
1021 | \f | |
1022 | ||
1023 | // In theory, these routines can be #ifdef'd away on machines which | |
1024 | // support divide overflow signals. However, we never know if some | |
1025 | // code might have been compiled with "-fuse-divide-subroutine", so we | |
1026 | // always include them in libgcj. | |
1027 | ||
1028 | jint | |
1029 | _Jv_divI (jint dividend, jint divisor) | |
1030 | { | |
9d4c2148 | 1031 | if (__builtin_expect (divisor == 0, false)) |
6c80c45e | 1032 | _Jv_ThrowSignal (arithexception); |
d342a2e1 | 1033 | |
58eb6e7c | 1034 | if (dividend == (jint) 0x80000000L && divisor == -1) |
d342a2e1 AH |
1035 | return dividend; |
1036 | ||
1037 | return dividend / divisor; | |
1038 | } | |
1039 | ||
1040 | jint | |
1041 | _Jv_remI (jint dividend, jint divisor) | |
1042 | { | |
9d4c2148 | 1043 | if (__builtin_expect (divisor == 0, false)) |
6c80c45e | 1044 | _Jv_ThrowSignal (arithexception); |
d342a2e1 | 1045 | |
58eb6e7c | 1046 | if (dividend == (jint) 0x80000000L && divisor == -1) |
d342a2e1 AH |
1047 | return 0; |
1048 | ||
1049 | return dividend % divisor; | |
1050 | } | |
1051 | ||
1052 | jlong | |
1053 | _Jv_divJ (jlong dividend, jlong divisor) | |
1054 | { | |
9d4c2148 | 1055 | if (__builtin_expect (divisor == 0, false)) |
6c80c45e | 1056 | _Jv_ThrowSignal (arithexception); |
d342a2e1 | 1057 | |
58eb6e7c | 1058 | if (dividend == (jlong) 0x8000000000000000LL && divisor == -1) |
d342a2e1 AH |
1059 | return dividend; |
1060 | ||
1061 | return dividend / divisor; | |
1062 | } | |
1063 | ||
1064 | jlong | |
1065 | _Jv_remJ (jlong dividend, jlong divisor) | |
1066 | { | |
9d4c2148 | 1067 | if (__builtin_expect (divisor == 0, false)) |
6c80c45e | 1068 | _Jv_ThrowSignal (arithexception); |
d342a2e1 | 1069 | |
58eb6e7c | 1070 | if (dividend == (jlong) 0x8000000000000000LL && divisor == -1) |
d342a2e1 AH |
1071 | return 0; |
1072 | ||
1073 | return dividend % divisor; | |
1074 | } |