1 // jvm.h - Header file for private implementation information. -*- c++ -*-
3 /* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation
5 This file is part of libgcj.
7 This software is copyrighted work licensed under the terms of the
8 Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
11 #ifndef __JAVA_JVM_H__
12 #define __JAVA_JVM_H__
14 // Define this before including jni.h.
15 // jni.h is included by jvmpi.h, which might be included. We define
16 // this unconditionally because it is convenient and it lets other
17 // files include jni.h without difficulty.
18 #define __GCJ_JNI_IMPL__
20 #include <gcj/javaprims.h>
22 #include <java-assert.h>
23 #include <java-threads.h>
24 // Must include java-gc.h before Object.h for the implementation.
27 #include <java/lang/Object.h>
29 // Include cni.h before field.h to enable all definitions. FIXME.
31 #include <gcj/field.h>
33 /* Macro for possible unused arguments. */
34 #define MAYBE_UNUSED __attribute__((__unused__))
36 /* Structure of the virtual table. */
40 typedef struct { void *pc
, *gp
; } vtable_elt
;
42 typedef void *vtable_elt
;
47 // This must be last, as derived classes "extend" this by
48 // adding new data members.
52 void *get_method(int i
) { return &method
[i
]; }
53 void set_method(int i
, void *fptr
) { method
[i
] = *(vtable_elt
*)fptr
; }
56 // We know that get_finalizer is only used for checking whether
57 // this object needs to have a finalizer registered. So it is
58 // safe to simply return just the PC component of the vtable
60 return ((vtable_elt
*)(get_method(0)))->pc
;
63 void *get_method(int i
) { return method
[i
]; }
64 void set_method(int i
, void *fptr
) { method
[i
] = fptr
; }
65 void *get_finalizer() { return get_method(0); }
68 static size_t vtable_elt_size() { return sizeof(vtable_elt
); }
70 // Given a method index, return byte offset from the vtable pointer.
71 static jint
idx_to_offset (int index
)
73 return (2 * sizeof (void *)) + (index
* vtable_elt_size ());
76 static _Jv_VTable
*new_vtable (int count
);
82 jint i
; // Also stores smaller integral types.
84 jint ia
[1]; // Half of _Jv_word2.
87 #if SIZEOF_VOID_P == 8
88 // We can safely put a long or a double in here without increasing
89 // the size of _Jv_Word; we take advantage of this in the interpreter.
96 struct _Jv_Field
*field
;
97 struct _Jv_Utf8Const
*utf8
;
98 struct _Jv_ResolvedMethod
*rmethod
;
116 jdouble double_value
;
117 jobject object_value
;
120 /* Extract a character from a Java-style Utf8 string.
121 * PTR points to the current character.
122 * LIMIT points to the end of the Utf8 string.
123 * PTR is incremented to point after the character thta gets returns.
124 * On an error, -1 is returned. */
125 #define UTF8_GET(PTR, LIMIT) \
126 ((PTR) >= (LIMIT) ? -1 \
127 : *(PTR) < 128 ? *(PTR)++ \
128 : (*(PTR)&0xE0) == 0xC0 && ((PTR)+=2)<=(LIMIT) && ((PTR)[-1]&0xC0) == 0x80 \
129 ? (((PTR)[-2] & 0x1F) << 6) + ((PTR)[-1] & 0x3F) \
130 : (*(PTR) & 0xF0) == 0xE0 && ((PTR) += 3) <= (LIMIT) \
131 && ((PTR)[-2] & 0xC0) == 0x80 && ((PTR)[-1] & 0xC0) == 0x80 \
132 ? (((PTR)[-3]&0x0F) << 12) + (((PTR)[-2]&0x3F) << 6) + ((PTR)[-1]&0x3F) \
135 extern int _Jv_strLengthUtf8(const char* str
, int len
);
137 typedef struct _Jv_Utf8Const Utf8Const
;
138 _Jv_Utf8Const
*_Jv_makeUtf8Const (const char *s
, int len
);
139 _Jv_Utf8Const
*_Jv_makeUtf8Const (jstring string
);
140 extern jboolean
_Jv_equalUtf8Consts (const _Jv_Utf8Const
*, const _Jv_Utf8Const
*);
141 extern jboolean
_Jv_equal (_Jv_Utf8Const
*, jstring
, jint
);
142 extern jboolean
_Jv_equaln (_Jv_Utf8Const
*, jstring
, jint
);
144 /* Helper class which converts a jstring to a temporary char*.
145 Uses the supplied buffer, if non-null. Otherwise, allocates
146 the buffer on the heap. Use the JV_TEMP_UTF_STRING macro,
147 which follows, to automatically allocate a stack buffer if
148 the string is small enough. */
149 class _Jv_TempUTFString
152 _Jv_TempUTFString(jstring jstr
, char* buf
=0);
153 ~_Jv_TempUTFString();
156 operator const char*() const
160 const char* buf() const
174 inline _Jv_TempUTFString::_Jv_TempUTFString (jstring jstr
, char* buf
)
175 : buf_(0), heapAllocated_(false)
178 jsize len
= JvGetStringUTFLength (jstr
);
183 buf_
= (char*) _Jv_Malloc (len
+1);
184 heapAllocated_
= true;
187 JvGetStringUTFRegion (jstr
, 0, jstr
->length(), buf_
);
191 inline _Jv_TempUTFString::~_Jv_TempUTFString ()
197 /* Macro which uses _Jv_TempUTFString. Allocates a stack-based
198 buffer if the string and its null terminator are <= 256
199 characters in length. Otherwise, a heap-based buffer is
200 used. The parameters to this macro are the variable name
201 which is an instance of _Jv_TempUTFString (above) and a
206 jstring jstr = getAJString();
207 JV_TEMP_UTF_STRING(utfstr, jstr);
208 printf("The string is: %s\n", utfstr.buf());
211 #define JV_TEMP_UTF_STRING(utfstr, jstr) \
212 jstring utfstr##thejstr = (jstr); \
213 jsize utfstr##_len = utfstr##thejstr ? JvGetStringUTFLength (utfstr##thejstr) + 1 : 0; \
214 char utfstr##_buf[utfstr##_len <= 256 ? utfstr##_len : 0]; \
215 _Jv_TempUTFString utfstr(utfstr##thejstr, sizeof(utfstr##_buf)==0 ? 0 : utfstr##_buf)
219 /* Some constants used during lookup of special class methods. */
220 extern _Jv_Utf8Const
*void_signature
; /* "()V" */
221 extern _Jv_Utf8Const
*clinit_name
; /* "<clinit>" */
222 extern _Jv_Utf8Const
*init_name
; /* "<init>" */
223 extern _Jv_Utf8Const
*finit_name
; /* "finit$", */
225 /* Set to true by _Jv_CreateJavaVM. */
226 extern bool runtimeInitialized
;
228 /* Print out class names as they are initialized. */
229 extern bool verbose_class_flag
;
231 /* When true, enable the bytecode verifier and BC-ABI verification. */
232 extern bool verifyClasses
;
234 /* Thread stack size specified by the -Xss runtime argument. */
235 extern size_t stack_size
;
238 // This class handles all aspects of class preparation and linking.
242 static _Jv_Field
*find_field_helper(jclass
, _Jv_Utf8Const
*, _Jv_Utf8Const
*,
244 static _Jv_Field
*find_field(jclass
, jclass
, jclass
*, _Jv_Utf8Const
*,
246 static void prepare_constant_time_tables(jclass
);
247 static jshort
get_interfaces(jclass
, _Jv_ifaces
*);
248 static void link_symbol_table(jclass
);
249 static void link_exception_table(jclass
);
250 static void layout_interface_methods(jclass
);
251 static void layout_vtable_methods(jclass
);
252 static void set_vtable_entries(jclass
, _Jv_VTable
*);
253 static void make_vtable(jclass
);
254 static void ensure_fields_laid_out(jclass
);
255 static void ensure_class_linked(jclass
);
256 static void ensure_supers_installed(jclass
);
257 static void add_miranda_methods(jclass
, jclass
);
258 static void ensure_method_table_complete(jclass
);
259 static void verify_class(jclass
);
260 static jshort
find_iindex(jclass
*, jshort
*, jshort
);
261 static jshort
indexof(void *, void **, jshort
);
262 static int get_alignment_from_class(jclass
);
263 static void generate_itable(jclass
, _Jv_ifaces
*, jshort
*);
264 static jshort
append_partial_itable(jclass
, jclass
, void **, jshort
);
265 static _Jv_Method
*search_method_in_class (jclass
, jclass
,
268 static void *create_error_method(_Jv_Utf8Const
*);
272 static bool has_field_p (jclass
, _Jv_Utf8Const
*);
273 static void print_class_loaded (jclass
);
274 static void resolve_class_ref (jclass
, jclass
*);
275 static void wait_for_state(jclass
, int);
276 static _Jv_word
resolve_pool_entry (jclass
, int, bool =false);
277 static void resolve_field (_Jv_Field
*, java::lang::ClassLoader
*);
278 static void verify_type_assertions (jclass
);
281 /* Type of pointer used as finalizer. */
282 typedef void _Jv_FinalizerFunc (jobject
);
284 /* Allocate space for a new Java object. */
285 void *_Jv_AllocObj (jsize size
, jclass cl
) __attribute__((__malloc__
));
286 /* Allocate space for a potentially uninitialized pointer-free object.
287 Interesting only with JV_HASH_SYNCHRONIZATION. */
288 void *_Jv_AllocPtrFreeObj (jsize size
, jclass cl
) __attribute__((__malloc__
));
289 /* Allocate space for an array of Java objects. */
290 void *_Jv_AllocArray (jsize size
, jclass cl
) __attribute__((__malloc__
));
291 /* Allocate space that is known to be pointer-free. */
292 void *_Jv_AllocBytes (jsize size
) __attribute__((__malloc__
));
293 /* Allocate space for a new non-Java object, which does not have the usual
294 Java object header but may contain pointers to other GC'ed objects. */
295 void *_Jv_AllocRawObj (jsize size
) __attribute__((__malloc__
));
296 /* Explicitly throw an out-of-memory exception. */
297 void _Jv_ThrowNoMemory() __attribute__((__noreturn__
));
298 /* Allocate an object with a single pointer. The first word is reserved
299 for the GC, and the second word is the traced pointer. */
300 void *_Jv_AllocTraceOne (jsize size
/* incl. reserved slot */);
301 /* Ditto, but for two traced pointers. */
302 void *_Jv_AllocTraceTwo (jsize size
/* incl. reserved slot */);
303 /* Initialize the GC. */
304 void _Jv_InitGC (void);
305 /* Register a finalizer. */
306 void _Jv_RegisterFinalizer (void *object
, _Jv_FinalizerFunc
*method
);
307 /* Compute the GC descriptor for a class */
308 void * _Jv_BuildGCDescr(jclass
);
310 /* Allocate some unscanned, unmoveable memory. Return NULL if out of
312 void *_Jv_MallocUnchecked (jsize size
) __attribute__((__malloc__
));
314 /* Initialize finalizers. The argument is a function to be called
315 when a finalizer is ready to be run. */
316 void _Jv_GCInitializeFinalizers (void (*notifier
) (void));
317 /* Run finalizers for objects ready to be finalized.. */
318 void _Jv_RunFinalizers (void);
319 /* Run all finalizers. Should be called only before exit. */
320 void _Jv_RunAllFinalizers (void);
322 void _Jv_RunGC (void);
323 /* Disable and enable GC. */
324 void _Jv_DisableGC (void);
325 void _Jv_EnableGC (void);
326 /* Register a disappearing link. This is a field F which should be
327 cleared when *F is found to be inaccessible. This is used in the
328 implementation of java.lang.ref.Reference. */
329 void _Jv_GCRegisterDisappearingLink (jobject
*objp
);
330 /* Return true if OBJECT should be reclaimed. This is used to
331 implement soft references. */
332 jboolean
_Jv_GCCanReclaimSoftReference (jobject obj
);
334 /* Register a finalizer for a String object. This is only used by
335 the intern() implementation. */
336 void _Jv_RegisterStringFinalizer (jobject str
);
337 /* This is called to actually finalize a possibly-intern()d String. */
338 void _Jv_FinalizeString (jobject str
);
340 /* Return approximation of total size of heap. */
341 long _Jv_GCTotalMemory (void);
342 /* Return approximation of total free memory. */
343 long _Jv_GCFreeMemory (void);
345 /* Set initial heap size. If SIZE==0, ignore. Should be run before
346 _Jv_InitGC. Not required to have any actual effect. */
347 void _Jv_GCSetInitialHeapSize (size_t size
);
349 /* Set maximum heap size. If SIZE==0, unbounded. Should be run
350 before _Jv_InitGC. Not required to have any actual effect. */
351 void _Jv_GCSetMaximumHeapSize (size_t size
);
353 /* External interface to setting the heap size. Parses ARG (a number
354 which can optionally have "k" or "m" appended and calls
355 _Jv_GCSetInitialHeapSize. */
356 void _Jv_SetInitialHeapSize (const char *arg
);
358 /* External interface to setting the maximum heap size. Parses ARG (a
359 number which can optionally have "k" or "m" appended and calls
360 _Jv_GCSetMaximumHeapSize. */
361 void _Jv_SetMaximumHeapSize (const char *arg
);
363 /* Free the method cache, if one was allocated. This is only called
364 during thread deregistration. */
365 void _Jv_FreeMethodCache ();
367 /* Set the stack size for threads. Parses ARG, a number which can
368 optionally have "k" or "m" appended. */
369 void _Jv_SetStackSize (const char *arg
);
371 extern "C" void JvRunMain (jclass klass
, int argc
, const char **argv
);
372 void _Jv_RunMain (jclass klass
, const char *name
, int argc
, const char **argv
,
375 void _Jv_RunMain (struct _Jv_VMInitArgs
*vm_args
, jclass klass
,
376 const char *name
, int argc
, const char **argv
, bool is_jar
);
378 // Delayed until after _Jv_AllocRawObj is declared.
380 _Jv_VTable::new_vtable (int count
)
382 size_t size
= sizeof(_Jv_VTable
) + (count
- 1) * vtable_elt_size ();
383 return (_Jv_VTable
*) _Jv_AllocRawObj (size
);
386 // Determine if METH gets an entry in a VTable.
387 static inline jboolean
_Jv_isVirtualMethod (_Jv_Method
*meth
)
389 using namespace java::lang::reflect
;
390 return (((meth
->accflags
& (Modifier::STATIC
| Modifier::PRIVATE
)) == 0)
391 && meth
->name
->first() != '<');
394 // This function is used to determine the hash code of an object.
396 _Jv_HashCode (jobject obj
)
398 // This was chosen to yield relatively well distributed results on
399 // both 32- and 64-bit architectures. Note 0x7fffffff is prime.
400 // FIXME: we assume sizeof(long) == sizeof(void *).
401 return (jint
) ((unsigned long) obj
% 0x7fffffff);
404 // Return a raw pointer to the elements of an array given the array
405 // and its element type. You might think we could just pick a single
406 // array type and use elements() on it, but we can't because we must
407 // account for alignment of the element type. When ARRAY is null, we
408 // obtain the number of bytes taken by the base part of the array.
410 _Jv_GetArrayElementFromElementType (jobject array
,
414 if (element_type
== JvPrimClass (byte
))
415 elts
= (char *) elements ((jbyteArray
) array
);
416 else if (element_type
== JvPrimClass (short))
417 elts
= (char *) elements ((jshortArray
) array
);
418 else if (element_type
== JvPrimClass (int))
419 elts
= (char *) elements ((jintArray
) array
);
420 else if (element_type
== JvPrimClass (long))
421 elts
= (char *) elements ((jlongArray
) array
);
422 else if (element_type
== JvPrimClass (boolean
))
423 elts
= (char *) elements ((jbooleanArray
) array
);
424 else if (element_type
== JvPrimClass (char))
425 elts
= (char *) elements ((jcharArray
) array
);
426 else if (element_type
== JvPrimClass (float))
427 elts
= (char *) elements ((jfloatArray
) array
);
428 else if (element_type
== JvPrimClass (double))
429 elts
= (char *) elements ((jdoubleArray
) array
);
431 elts
= (char *) elements ((jobjectArray
) array
);
435 extern "C" void _Jv_ThrowBadArrayIndex (jint bad_index
)
436 __attribute__((noreturn
));
437 extern "C" void _Jv_ThrowNullPointerException (void)
438 __attribute__((noreturn
));
439 extern "C" void _Jv_ThrowNoSuchMethodError (void)
440 __attribute__((noreturn
));
441 extern "C" void _Jv_ThrowNoSuchFieldError (int)
442 __attribute__((noreturn
));
443 extern "C" jobject
_Jv_NewArray (jint type
, jint size
)
444 __attribute__((__malloc__
));
445 extern "C" jobject
_Jv_NewMultiArray (jclass klass
, jint dims
, ...)
446 __attribute__((__malloc__
));
447 extern "C" void *_Jv_CheckCast (jclass klass
, jobject obj
);
448 extern "C" void *_Jv_LookupInterfaceMethod (jclass klass
, Utf8Const
*name
,
449 Utf8Const
*signature
);
450 extern "C" void *_Jv_LookupInterfaceMethodIdx (jclass klass
, jclass iface
,
452 extern "C" void _Jv_CheckArrayStore (jobject array
, jobject obj
);
453 extern "C" void _Jv_RegisterClass (jclass klass
);
454 extern "C" void _Jv_RegisterClasses (const jclass
*classes
);
455 extern "C" void _Jv_RegisterClasses_Counted (const jclass
*classes
,
457 extern "C" void _Jv_RegisterResource (void *vptr
);
458 extern void _Jv_UnregisterClass (_Jv_Utf8Const
*, java::lang::ClassLoader
*);
460 extern "C" jobject
_Jv_UnwrapJNIweakReference (jobject
);
462 extern jclass
_Jv_FindClass (_Jv_Utf8Const
*name
,
463 java::lang::ClassLoader
*loader
);
465 extern jclass
_Jv_FindClassNoException (_Jv_Utf8Const
*name
,
466 java::lang::ClassLoader
*loader
);
468 extern jclass
_Jv_FindClassFromSignature (char *,
469 java::lang::ClassLoader
*loader
,
472 extern jclass
_Jv_FindClassFromSignatureNoException (char *,
473 java::lang::ClassLoader
*loader
,
476 extern void _Jv_GetTypesFromSignature (jmethodID method
,
477 jclass declaringClass
,
478 JArray
<jclass
> **arg_types_out
,
479 jclass
*return_type_out
);
481 extern jboolean
_Jv_CheckAccess (jclass self_klass
, jclass other_klass
,
484 extern jobject
_Jv_CallAnyMethodA (jobject obj
, jclass return_type
,
485 jmethodID meth
, jboolean is_constructor
,
486 JArray
<jclass
> *parameter_types
,
488 jclass iface
= NULL
);
491 extern void _Jv_CallAnyMethodA (jobject obj
,
494 jboolean is_constructor
,
495 jboolean is_virtual_call
,
496 JArray
<jclass
> *parameter_types
,
499 jboolean is_jni_call
= true,
500 jclass iface
= NULL
);
502 extern jobject
_Jv_NewMultiArray (jclass
, jint ndims
, jint
* dims
)
503 __attribute__((__malloc__
));
505 extern "C" void _Jv_ThrowAbstractMethodError () __attribute__((__noreturn__
));
507 /* Checked divide subroutines. */
510 jint
_Jv_divI (jint
, jint
);
511 jint
_Jv_remI (jint
, jint
);
512 jlong
_Jv_divJ (jlong
, jlong
);
513 jlong
_Jv_remJ (jlong
, jlong
);
516 /* Get the number of arguments (cf. argc) or 0 if our argument
517 list was never initialized. */
518 extern int _Jv_GetNbArgs (void);
520 /* Get the specified argument (cf. argv[index]) or "" if either
521 our argument list was never initialized or the specified index
523 extern const char * _Jv_GetSafeArg (int index
);
525 /* Sets our argument list. Can be used by programs with non-standard
527 extern void _Jv_SetArgs (int argc
, const char **argv
);
529 /* Get the name of the running executable. */
530 extern const char *_Jv_ThisExecutable (void);
532 /* Return a pointer to a symbol in executable or loaded library. */
533 void *_Jv_FindSymbolInExecutable (const char *);
535 /* Initialize JNI. */
536 extern void _Jv_JNI_Init (void);
538 /* Get or set the per-thread JNIEnv used by the invocation API. */
539 _Jv_JNIEnv
*_Jv_GetCurrentJNIEnv ();
540 void _Jv_SetCurrentJNIEnv (_Jv_JNIEnv
*);
543 void _Jv_FreeJNIEnv (_Jv_JNIEnv
*);
546 void _Jv_FreeJNIEnv (_Jv_JNIEnv
*);
549 _Jv_JavaVM
*_Jv_GetJavaVM ();
551 // Some verification functions from defineclass.cc.
552 bool _Jv_VerifyFieldSignature (_Jv_Utf8Const
*sig
);
553 bool _Jv_VerifyMethodSignature (_Jv_Utf8Const
*sig
);
554 bool _Jv_VerifyClassName (unsigned char* ptr
, _Jv_ushort length
);
555 bool _Jv_VerifyClassName (_Jv_Utf8Const
*name
);
556 bool _Jv_VerifyIdentifier (_Jv_Utf8Const
*);
557 bool _Jv_ClassNameSamePackage (_Jv_Utf8Const
*name1
, _Jv_Utf8Const
*name2
);
559 struct _Jv_core_chain
566 struct _Jv_core_chain
*next
;
569 // This is called when new core data is loaded.
570 extern void (*_Jv_RegisterCoreHook
) (_Jv_core_chain
*);
572 _Jv_core_chain
*_Jv_FindCore (_Jv_core_chain
*node
, jstring name
);
573 void _Jv_FreeCoreChain (_Jv_core_chain
*chain
);
579 extern void (*_Jv_JVMPI_Notify_OBJECT_ALLOC
) (JVMPI_Event
*event
);
580 extern void (*_Jv_JVMPI_Notify_THREAD_START
) (JVMPI_Event
*event
);
581 extern void (*_Jv_JVMPI_Notify_THREAD_END
) (JVMPI_Event
*event
);
584 /* FIXME: this should really be defined in some more generic place */
585 #define ROUND(V, A) (((((unsigned) (V))-1) | ((A)-1))+1)
587 extern void _Jv_RegisterBootstrapPackages ();
589 #define FLAG_BINARYCOMPAT_ABI (1<<31) /* Class is built with the BC-ABI. */
591 #define FLAG_BOOTSTRAP_LOADER (1<<30) /* Used when defining a class that
592 should be loaded by the bootstrap
595 // These are used to find ABI versions we recognize.
596 #define GCJ_CXX_ABI_VERSION (__GNUC__ * 100000 + __GNUC_MINOR__ * 1000)
598 // This is the old-style BC version ID used by GCJ 4.0.0.
599 #define OLD_GCJ_40_BC_ABI_VERSION (4 * 10000 + 0 * 10 + 5)
601 // New style version IDs used by GCJ 4.0.1 and later.
602 #define GCJ_40_BC_ABI_VERSION (4 * 100000 + 0 * 1000)
605 _Jv_CheckABIVersion (unsigned long value
)
607 // We are compatible with GCJ 4.0.0 BC-ABI classes. This release used a
608 // different format for the version ID string.
609 if (value
== OLD_GCJ_40_BC_ABI_VERSION
)
612 // The 20 low-end bits are used for the version number.
613 unsigned long version
= value
& 0xfffff;
615 if (value
& FLAG_BINARYCOMPAT_ABI
)
617 int abi_rev
= version
% 100;
618 int abi_ver
= version
- abi_rev
;
619 if (abi_ver
== GCJ_40_BC_ABI_VERSION
&& abi_rev
<= 0)
624 return version
== GCJ_CXX_ABI_VERSION
;
630 _Jv_ClassForBootstrapLoader (unsigned long value
)
632 return (value
& FLAG_BOOTSTRAP_LOADER
);
635 // It makes the source cleaner if we simply always define this
636 // function. If the interpreter is not built, it will never return
638 extern inline jboolean
639 _Jv_IsInterpretedClass (jclass c
)
641 return (c
->accflags
& java::lang::reflect::Modifier::INTERPRETED
) != 0;
644 // Return true if the class was compiled with the BC ABI.
645 extern inline jboolean
646 _Jv_IsBinaryCompatibilityABI (jclass c
)
648 // There isn't really a better test for the ABI type at this point,
649 // that will work once the class has been registered.
650 return c
->otable_syms
|| c
->atable_syms
|| c
->itable_syms
;
653 // Returns whether the given class does not really exists (ie. we have no
654 // bytecode) but still allows us to do some very conservative actions.
655 // E.g. throwing a NoClassDefFoundError with the name of the missing
657 extern inline jboolean
658 _Jv_IsPhantomClass (jclass c
)
660 return c
->state
== JV_STATE_PHANTOM
;
663 #endif /* __JAVA_JVM_H__ */