// resolve.cc - Code for linking and resolving classes and pool entries. /* Copyright (C) 1999 Cygnus Solutions This file is part of libgcj. This software is copyrighted work licensed under the terms of the Libgcj License. Please consult the file "LIBGCJ_LICENSE" for details. */ /* Author: Kresten Krab Thorup */ #include #ifdef INTERPRETER #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void throw_internal_error (char *msg) __attribute__ ((__noreturn__)); static void throw_class_format_error (jstring msg) __attribute__ ((__noreturn__)); static void throw_class_format_error (char *msg) __attribute__ ((__noreturn__)); #define StringClass _CL_Q34java4lang6String extern java::lang::Class StringClass; #define ClassObject _CL_Q34java4lang6Object extern java::lang::Class ClassObject; #define ObjectClass _CL_Q34java4lang6Object extern java::lang::Class ObjectClass; static int get_alignment_from_class (jclass); static _Jv_ResolvedMethod* _Jv_BuildResolvedMethod (_Jv_Method*, jclass, jboolean, jint); static const int PUBLIC = 0x001; static const int PRIVATE = 0x002; static const int PROTECTED = 0x004; static const int STATIC = 0x008; static const int FINAL = 0x010; static const int SYNCHRONIZED = 0x020; static const int VOLATILE = 0x040; static const int TRANSIENT = 0x080; static const int NATIVE = 0x100; static const int INTERFACE = 0x200; static const int ABSTRACT = 0x400; static const int ALL_FLAGS = 0x7FF; // We need to know the name of a constructor. static _Jv_Utf8Const *init_name = _Jv_makeUtf8Const ("", 6); static void throw_incompatible_class_change_error (jstring msg) { JvThrow (new java::lang::IncompatibleClassChangeError (msg)); } void* _Jv_ResolvePoolEntry (jclass klass, int index) { _Jv_Constants *pool = &klass->constants; if ((pool->tags[index] & JV_CONSTANT_ResolvedFlag) != 0) return pool->data[index]; switch (pool->tags[index]) { case JV_CONSTANT_Class: { _Jv_Utf8Const *name = (_Jv_Utf8Const *) pool->data[index]; jclass found; if (name->data[0] == '[') found = _Jv_FindClassFromSignature (&name->data[0], klass->loader); else found = _Jv_FindClass (name, klass->loader); if (! found) { jstring str = _Jv_NewStringUTF (name->data); JvThrow (new java::lang::ClassNotFoundException (str)); } if ((found->accflags & PUBLIC) == PUBLIC || (_Jv_ClassNameSamePackage (found->name, klass->name))) { pool->data[index] = (void *) found; pool->tags[index] |= JV_CONSTANT_ResolvedFlag; } else { JvThrow (new java::lang::IllegalAccessError (found->getName())); } } break; case JV_CONSTANT_String: { jstring str; str = _Jv_NewStringUtf8Const ((_Jv_Utf8Const *) pool->data[index]); pool->data[index] = (void *) str; pool->tags[index] |= JV_CONSTANT_ResolvedFlag; } break; case JV_CONSTANT_Fieldref: { _Jv_ushort class_index, name_and_type_index; _Jv_loadIndexes ((const void**) &pool->data[index], class_index, name_and_type_index); jclass owner = (jclass) _Jv_ResolvePoolEntry (klass, class_index); if (owner != klass) _Jv_InitClass (owner); _Jv_ushort name_index, type_index; _Jv_loadIndexes ((const void**) &pool->data[name_and_type_index], name_index, type_index); _Jv_Utf8Const *field_name = (_Jv_Utf8Const*) pool->data[name_index]; _Jv_Utf8Const *field_type_name = (_Jv_Utf8Const*) pool->data[type_index]; // FIXME: The implementation of this function // (_Jv_FindClassFromSignature) will generate an instance of // _Jv_Utf8Const for each call if the field type is a class name // (Lxx.yy.Z;). This may be too expensive to do for each and // every fieldref being resolved. For now, we fix the problem by // only doing it when we have a loader different from the class // declaring the field. jclass field_type = 0; if (owner->loader != klass->loader) field_type = _Jv_FindClassFromSignature (field_type_name->data, klass->loader); _Jv_Field* the_field = 0; for (jclass cls = owner; cls != 0; cls = cls->getSuperclass ()) { for (int i = 0; i < cls->field_count; i++) { _Jv_Field *field = &cls->fields[i]; if (! _Jv_equalUtf8Consts (field->name, field_name)) continue; // now, check field access. if ( (cls == klass) || ((field->flags & PUBLIC) != 0) || (((field->flags & PROTECTED) != 0) && cls->isAssignableFrom (klass)) || (((field->flags & PRIVATE) == 0) && _Jv_ClassNameSamePackage (cls->name, klass->name))) { /* resove the field using the class' own loader if necessary */ if (!field->isResolved ()) _Jv_ResolveField (field, cls->loader); if (field_type != 0 && field->type != field_type) JvThrow (new java::lang::LinkageError (JvNewStringLatin1 ("field type mismatch with different loaders"))); the_field = field; goto end_of_field_search; } else { JvThrow (new java::lang::IllegalAccessError); } } } end_of_field_search: if (the_field == 0) { jstring msg = JvNewStringLatin1 ("field "); msg = msg->concat (owner->getName ()); msg = msg->concat (JvNewStringLatin1(".")); msg = msg->concat (_Jv_NewStringUTF (field_name->data)); msg = msg->concat (JvNewStringLatin1(" was not found.")); throw_incompatible_class_change_error (msg); } pool->data[index] = (void*)the_field; pool->tags[index] |= JV_CONSTANT_ResolvedFlag; } break; case JV_CONSTANT_Methodref: case JV_CONSTANT_InterfaceMethodref: { _Jv_ushort class_index, name_and_type_index; _Jv_loadIndexes ((const void**) &pool->data[index], class_index, name_and_type_index); jclass owner = (jclass) _Jv_ResolvePoolEntry (klass, class_index); if (owner != klass) _Jv_InitClass (owner); _Jv_ushort name_index, type_index; _Jv_loadIndexes ((const void**) &pool->data[name_and_type_index], name_index, type_index); _Jv_Utf8Const *method_name = (_Jv_Utf8Const*) pool->data[name_index]; _Jv_Utf8Const *method_signature = (_Jv_Utf8Const*) pool->data[type_index]; int vtable_index = -1; _Jv_Method *the_method = 0; jclass found_class = 0; // we make a loop here, because methods are allowed to be moved to // a super class, and still be visible.. (binary compatibility). for (jclass cls = owner; cls != 0; cls = cls->getSuperclass ()) { for (int i = 0; i < cls->method_count; i++) { _Jv_Method *method = &cls->methods[i]; if ( (!_Jv_equalUtf8Consts (method->name, method_name)) || (!_Jv_equalUtf8Consts (method->signature, method_signature))) continue; if (cls == klass || ((method->accflags & PUBLIC) != 0) || (((method->accflags & PROTECTED) != 0) && cls->isAssignableFrom (klass)) || (((method->accflags & PRIVATE) == 0) && _Jv_ClassNameSamePackage (cls->name, klass->name))) { // FIXME: if (cls->loader != klass->loader), then we // must actually check that the types of arguments // correspond. That is, for each argument type, and // the return type, doing _Jv_FindClassFromSignature // with either loader should produce the same result, // i.e., exactly the same jclass object. JVMS 5.4.3.3 the_method = method; found_class = cls; if (pool->tags[index] == JV_CONSTANT_InterfaceMethodref) vtable_index = -1; else vtable_index = _Jv_DetermineVTableIndex (cls, method_name, method_signature); if (vtable_index == 0) throw_incompatible_class_change_error (JvNewStringLatin1 ("method not found")); goto end_of_method_search; } else { JvThrow (new java::lang::IllegalAccessError); } } } end_of_method_search: if (the_method == 0) { jstring msg = JvNewStringLatin1 ("method "); msg = msg->concat (owner->getName ()); msg = msg->concat (JvNewStringLatin1(".")); msg = msg->concat (_Jv_NewStringUTF (method_name->data)); msg = msg->concat (JvNewStringLatin1(" was not found.")); JvThrow(new java::lang::NoSuchFieldError (msg)); } pool->data[index] = (void*) _Jv_BuildResolvedMethod(the_method, found_class, ((the_method->accflags & STATIC) != 0), vtable_index); pool->tags[index] |= JV_CONSTANT_ResolvedFlag; } break; } return pool->data[index]; } void _Jv_ResolveField (_Jv_Field *field, java::lang::ClassLoader *loader) { if (! field->isResolved ()) { _Jv_Utf8Const *sig = (_Jv_Utf8Const*)field->type; field->type = _Jv_FindClassFromSignature (sig->data, loader); field->flags &= ~_Jv_FIELD_UNRESOLVED_FLAG; } } _Jv_Method* _Jv_LookupDeclaredMethod (jclass klass, _Jv_Utf8Const *name, _Jv_Utf8Const *signature) { for (; klass; klass = klass->getSuperclass()) { _Jv_Method *meth = _Jv_GetMethodLocal (klass, name, signature); if (meth) return meth; } return NULL; } /** FIXME: this is a terribly inefficient algorithm! It would improve things if compiled classes to know vtable offset, and _Jv_Method had a field for this. Returns 0 if this class does not declare the given method. Returns -1 if the given method does not appear in the vtable. i.e., it is static, private, final or a constructor. Otherwise, returns the vtable index. */ int _Jv_DetermineVTableIndex (jclass klass, _Jv_Utf8Const *name, _Jv_Utf8Const *signature) { jclass super_class = klass->getSuperclass (); if (super_class != NULL) { int prev = _Jv_DetermineVTableIndex (super_class, name, signature); if (prev != 0) return prev; } /* at this point, we know that the super-class does not declare * the method. Otherwise, the above call would have found it, and * determined the result of this function (-1 or some positive * number). */ _Jv_Method *meth = _Jv_GetMethodLocal (klass, name, signature); /* now, if we do not declare this method, return zero */ if (meth == NULL) return 0; /* so now, we know not only that the super class does not declare the * method, but we do! So, this is a first declaration of the method. */ /* now, the checks for things that are declared in this class, but do * not go into the vtable. There are three cases. * 1) the method is static, private or final * 2) the class itself is final, or * 3) it is the method */ if ( (meth->accflags & (STATIC|PRIVATE|FINAL)) != 0 || (klass->accflags & FINAL) != 0 || _Jv_equalUtf8Consts (name, init_name)) return -1; /* reaching this point, we know for sure, that the method in question * will be in the vtable. The question is where. */ /* the base offset, is where we will start assigning vtable * indexes for this class. It is 1 for base classes * (vtable->method[0] is unused), and for non-base classes it is the * number of entries in the super class' vtable plus 1. */ int base_offset; if (super_class == 0) base_offset = 1; else base_offset = super_class->vtable_method_count+1; /* we will consider methods 0..this_method_index-1. And for each one, * determine if it is new (i.e., if it appears in the super class), * and if it should go in the vtable. If so, increment base_offset */ int this_method_index = meth - (&klass->methods[0]); for (int i = 0; i < this_method_index; i++) { _Jv_Method *m = &klass->methods[i]; /* fist some checks for things that surely do not go in the * vtable */ if ((m->accflags & (STATIC|PRIVATE)) != 0) continue; if (_Jv_equalUtf8Consts (m->name, init_name)) continue; /* Then, we need to know if this method appears in the superclass. (This is where this function gets expensive) */ _Jv_Method *sm = _Jv_LookupDeclaredMethod (super_class, m->name, m->signature); /* if it was somehow declared in the superclass, skip this */ if (sm != NULL) continue; /* but if it is final, and not declared in the super class, * then we also skip it */ if ((m->accflags & FINAL) != 0) continue; /* finally, we can assign the index of this method */ /* m->vtable_index = base_offset */ base_offset += 1; } return base_offset; } /* this is installed in place of abstract methods */ static void _Jv_abstractMethodError () { JvThrow (new java::lang::AbstractMethodError); } void _Jv_PrepareClass(jclass klass) { /* * The job of this function is to: 1) assign storage to fields, and 2) * build the vtable. static fields are assigned real memory, instance * fields are assigned offsets. * * NOTE: we have a contract with the garbage collector here. Static * reference fields must not be resolved, until after they have storage * assigned which is the check used by the collector to see if it * should indirect the static field reference and mark the object * pointed to. * * Most fields are resolved lazily (i.e. have their class-type * assigned) when they are accessed the first time by calling as part * of _Jv_ResolveField, which is allways called after _Jv_PrepareClass. * Static fields with initializers are resolved as part of this * function, as are fields with primitive types. */ if (! _Jv_IsInterpretedClass (klass)) return; if (klass->state >= JV_STATE_PREPARED) return; // make sure super-class is linked. This involves taking a lock on // the super class, so we use the Java method resolveClass, which will // unlock it properly, should an exception happen. java::lang::ClassLoader::resolveClass (klass->superclass); _Jv_InterpClass *clz = (_Jv_InterpClass*)klass; /************ PART ONE: OBJECT LAYOUT ***************/ int instance_size; int static_size; // java.lang.Object is never interpreted! instance_size = clz->superclass->size (); static_size = 0; for (int i = 0; i < clz->field_count; i++) { int field_size; int field_align; _Jv_Field *field = &clz->fields[i]; if (! field->isRef ()) { // it's safe to resolve the field here, since it's // a primitive class, which does not cause loading to happen. _Jv_ResolveField (field, clz->loader); field_size = field->type->size (); field_align = get_alignment_from_class (field->type); } else { field_size = sizeof (jobject); field_align = __alignof__ (jobject); } #ifndef COMPACT_FIELDS field->bsize = field_size; #endif if (field->flags & STATIC) { /* this computes an offset into a region we'll allocate shortly, and then add this offset to the start address */ static_size = ROUND (static_size, field_align); field->u.boffset = static_size; static_size += field_size; } else { instance_size = ROUND (instance_size, field_align); field->u.boffset = instance_size; instance_size += field_size; } } // set the instance size for the class clz->size_in_bytes = instance_size; // allocate static memory if (static_size != 0) { char *static_data = (char*)_Jv_AllocBytesChecked (static_size); memset (static_data, 0, static_size); for (int i = 0; i < clz->field_count; i++) { _Jv_Field *field = &clz->fields[i]; if ((field->flags & STATIC) != 0) { field->u.addr = static_data + field->u.boffset; if (clz->field_initializers[i] != 0) { _Jv_ResolveField (field, clz->loader); _Jv_InitField (0, clz, i); } } } // now we don't need the field_initializers anymore, so let the // collector get rid of it! clz->field_initializers = 0; } /************ PART TWO: VTABLE LAYOUT ***************/ /* preparation: build the vtable stubs (even interfaces can) have code -- for static constructors. */ for (int i = 0; i < clz->method_count; i++) { _Jv_InterpMethod *imeth = clz->interpreted_methods[i]; if (imeth != 0) // it could be abstract or native { clz->methods[i].ncode = imeth->ncode (); } else { if ((clz->methods[i].accflags & NATIVE) != 0) { JvThrow (new java::lang::VirtualMachineError (JvNewStringLatin1 ("the interpreter does not support native methods"))); } } } if (clz->accflags & INTERFACE) { clz->state = JV_STATE_PREPARED; clz->notifyAll (); return; } /* FIXME: native methods for interpreted classes should be handled, I * dunno exactly how, but it seems that we should try to find them at * this point, and if we fail, try again after , since it * could have caused additional code to be loaded. Interfaces cannot * have native methods (not even for static initialization). */ /* Now onto the actual job: vtable layout. First, count how many new methods we have */ int new_method_count = 0; jclass super_class = clz->getSuperclass (); if (super_class == 0) throw_internal_error ("cannot handle interpreted base classes"); for (int i = 0; i < clz->method_count; i++) { _Jv_Method *this_meth = &clz->methods[i]; if ((this_meth->accflags & (STATIC|PRIVATE)) != 0 || _Jv_equalUtf8Consts (this_meth->name, init_name)) { /* skip this, it doesn't go in the vtable */ continue; } _Jv_Method *orig_meth = _Jv_LookupDeclaredMethod (super_class, this_meth->name, this_meth->signature); if (orig_meth == 0) { // new methods that are final, also don't go in the vtable if ((this_meth->accflags & FINAL) != 0) continue; new_method_count += 1; continue; } if ((orig_meth->accflags & (STATIC|PRIVATE|FINAL)) != 0 || ((orig_meth->accflags & ABSTRACT) == 0 && (this_meth->accflags & ABSTRACT) != 0 && (klass->accflags & ABSTRACT) == 0)) { clz->state = JV_STATE_ERROR; clz->notifyAll (); JvThrow (new java::lang::IncompatibleClassChangeError (clz->getName ())); } /* FIXME: At this point, if (loader != super_class->loader), we * need to "impose class loader constraints" for the types * involved in the signature of this method */ } /* determine size */ int vtable_count = (super_class->vtable_method_count) + new_method_count; clz->vtable_method_count = vtable_count; /* allocate vtable structure */ _Jv_VTable *vtable = (_Jv_VTable*) _Jv_AllocBytesChecked (sizeof (_Jv_VTable) + (sizeof (void*) * (vtable_count))); vtable->clas = clz; /* copy super class' vtable entries (index 0 goes unused). */ memcpy ((void*)&vtable->method[1], (void*)&super_class->vtable->method[1], sizeof (void*) * super_class->vtable_method_count); /* now, install our own vtable entries, reprise... */ for (int i = 0; i < clz->method_count; i++) { _Jv_Method *this_meth = &clz->methods[i]; int index = _Jv_DetermineVTableIndex (clz, this_meth->name, this_meth->signature); if (index == 0) throw_internal_error ("method now found in own class"); if (index != -1) { if (index > clz->vtable_method_count+1) throw_internal_error ("vtable problem..."); if (clz->interpreted_methods[i] == 0) vtable->method[index] = (void*)&_Jv_abstractMethodError; else vtable->method[index] = this_meth->ncode; } } /* finally, assign the vtable! */ clz->vtable = vtable; /* wooha! we're done. */ clz->state = JV_STATE_PREPARED; clz->notifyAll (); } /** Do static initialization for fields with a constant initializer */ void _Jv_InitField (jobject obj, jclass klass, int index) { if (obj != 0 && klass == 0) klass = obj->getClass (); if (!_Jv_IsInterpretedClass (klass)) return; _Jv_InterpClass *clz = (_Jv_InterpClass*)klass; _Jv_Field * field = (&clz->fields[0]) + index; if (index > clz->field_count) throw_internal_error ("field out of range"); int init = clz->field_initializers[index]; if (init == 0) return; _Jv_Constants *pool = &clz->constants; int tag = pool->tags[init]; if (! field->isResolved ()) throw_internal_error ("initializing unresolved field"); if (obj==0 && ((field->flags & STATIC) == 0)) throw_internal_error ("initializing non-static field with no object"); void *addr = 0; if ((field->flags & STATIC) != 0) addr = (void*) field->u.addr; else addr = (void*) (((char*)obj) + field->u.boffset); switch (tag) { case JV_CONSTANT_String: { _Jv_MonitorEnter (clz); jstring str; str = _Jv_NewStringUtf8Const ((_Jv_Utf8Const *) pool->data[init]); pool->data[init] = (void *) str; pool->tags[init] = JV_CONSTANT_ResolvedString; _Jv_MonitorExit (clz); } /* fall through */ case JV_CONSTANT_ResolvedString: if (! (field->type == &StringClass || field->type == &ObjectClass)) throw_class_format_error ("string initialiser to non-string field"); *(jstring*)addr = *(jstring*) (pool->data + init); break; case JV_CONSTANT_Integer: { int value = *(jint*)(pool->data + init); if (field->type == JvPrimClass (boolean)) *(jboolean*)addr = (jboolean)value; else if (field->type == JvPrimClass (byte)) *(jbyte*)addr = (jbyte)value; else if (field->type == JvPrimClass (char)) *(jchar*)addr = (jchar)value; else if (field->type == JvPrimClass (short)) *(jshort*)addr = (jshort)value; else if (field->type == JvPrimClass (int)) *(jint*)addr = (jint)value; else throw_class_format_error ("erroneous field initializer"); } break; case JV_CONSTANT_Long: if (field->type != JvPrimClass (long)) throw_class_format_error ("erroneous field initializer"); memcpy (addr, pool->data+init, 8); break; case JV_CONSTANT_Float: if (field->type != JvPrimClass (float)) throw_class_format_error ("erroneous field initializer"); memcpy (addr, pool->data+init, 4); break; case JV_CONSTANT_Double: if (field->type != JvPrimClass (double)) throw_class_format_error ("erroneous field initializer"); memcpy (addr, pool->data+init, 8); break; default: throw_class_format_error ("erroneous field initializer"); } } static int get_alignment_from_class (jclass klass) { if (klass == JvPrimClass (byte)) return __alignof__ (jbyte); else if (klass == JvPrimClass (short)) return __alignof__ (jshort); else if (klass == JvPrimClass (int)) return __alignof__ (jint); else if (klass == JvPrimClass (long)) return __alignof__ (jlong); else if (klass == JvPrimClass (boolean)) return __alignof__ (jboolean); else if (klass == JvPrimClass (char)) return __alignof__ (jchar); else if (klass == JvPrimClass (float)) return __alignof__ (jfloat); else if (klass == JvPrimClass (double)) return __alignof__ (jdouble); else return __alignof__ (jobject); } inline static unsigned char* skip_one_type (unsigned char* ptr) { int ch = *ptr++; while (ch == '[') { ch = *ptr++; } if (ch == 'L') { do { ch = *ptr++; } while (ch != ';'); } return ptr; } static ffi_type* get_ffi_type_from_signature (unsigned char* ptr) { switch (*ptr) { case 'L': case '[': return &ffi_type_pointer; break; case 'Z': case 'B': return &ffi_type_sint8; break; case 'C': return &ffi_type_uint16; break; case 'S': return &ffi_type_sint16; break; case 'I': return &ffi_type_sint32; break; case 'J': return &ffi_type_sint64; break; case 'F': return &ffi_type_float; break; case 'D': return &ffi_type_double; break; case 'V': return &ffi_type_void; break; } throw_internal_error ("unknown type in signature"); } /* this function yields the number of actual arguments, that is, if the * function is non-static, then one is added to the number of elements * found in the signature */ static int count_arguments (_Jv_Utf8Const *signature, jboolean staticp) { unsigned char *ptr = (unsigned char*) signature->data; int arg_count = staticp ? 0 : 1; /* first, count number of arguments */ // skip '(' ptr++; // count args while (*ptr != ')') { ptr = skip_one_type (ptr); arg_count += 1; } return arg_count; } /* This beast will build a cif, given the signature. Memory for * the cif itself and for the argument types must be allocated by the * caller. */ static int init_cif (_Jv_Utf8Const* signature, int arg_count, jboolean staticp, ffi_cif *cif, ffi_type **arg_types) { unsigned char *ptr = (unsigned char*) signature->data; int arg_index = 0; // arg number int item_count = 0; // stack-item count // setup receiver if (!staticp) { arg_types[arg_index++] = &ffi_type_pointer; item_count += 1; } // skip '(' ptr++; // assign arg types while (*ptr != ')') { arg_types[arg_index++] = get_ffi_type_from_signature (ptr); if (*ptr == 'J' || *ptr == 'D') item_count += 2; else item_count += 1; ptr = skip_one_type (ptr); } // skip ')' ptr++; ffi_type *rtype = get_ffi_type_from_signature (ptr); ptr = skip_one_type (ptr); if (ptr != (unsigned char*)signature->data + signature->length) throw_internal_error ("did not find end of signature"); if (ffi_prep_cif (cif, FFI_DEFAULT_ABI, arg_count, rtype, arg_types) != FFI_OK) throw_internal_error ("ffi_prep_cif failed"); return item_count; } /* we put this one here, and not in interpret.cc because it * calls the utility routines count_arguments * which are static to this module. The following struct defines the * layout we use for the stubs, it's only used in the ncode method. */ typedef struct { ffi_raw_closure closure; ffi_cif cif; ffi_type *arg_types[0]; } ncode_closure; typedef void (*ffi_closure_fun) (ffi_cif*,void*,ffi_raw*,void*); void* _Jv_InterpMethod::ncode () { if (self->ncode != 0) return self->ncode; jboolean staticp = (self->accflags & STATIC) != 0; int arg_count = count_arguments (self->signature, staticp); ncode_closure *closure = (ncode_closure*)_Jv_AllocBytesChecked (sizeof (ncode_closure) + arg_count * sizeof (ffi_type*)); init_cif (self->signature, arg_count, staticp, &closure->cif, &closure->arg_types[0]); ffi_closure_fun fun; args_raw_size = ffi_raw_size (&closure->cif); if ((self->accflags & SYNCHRONIZED) != 0) { if (staticp) fun = (ffi_closure_fun)&_Jv_InterpMethod::run_synch_class; else fun = (ffi_closure_fun)&_Jv_InterpMethod::run_synch_object; } else { fun = (ffi_closure_fun)&_Jv_InterpMethod::run_normal; } ffi_prep_raw_closure (&closure->closure, &closure->cif, fun, (void*)this); self->ncode = (void*)closure; return self->ncode; } /* A _Jv_ResolvedMethod is what is put in the constant pool for a * MethodRef or InterfacemethodRef. */ static _Jv_ResolvedMethod* _Jv_BuildResolvedMethod (_Jv_Method* method, jclass klass, jboolean staticp, jint vtable_index) { int arg_count = count_arguments (method->signature, staticp); _Jv_ResolvedMethod* result = (_Jv_ResolvedMethod*) _Jv_AllocBytesChecked (sizeof (_Jv_ResolvedMethod) + arg_count*sizeof (ffi_type*)); result->stack_item_count = init_cif (method->signature, arg_count, staticp, &result->cif, &result->arg_types[0]); result->vtable_index = vtable_index; result->method = method; result->klass = klass; return result; } static void throw_class_format_error (jstring msg) { if (msg == 0) JvThrow (new java::lang::ClassFormatError); else JvThrow (new java::lang::ClassFormatError (msg)); } static void throw_class_format_error (char *msg) { throw_class_format_error (JvNewStringLatin1 (msg)); } static void throw_internal_error (char *msg) { JvThrow (new java::lang::InternalError (JvNewStringLatin1 (msg))); } #endif