From b094d6c4bf572654a031ecc4afe675154c886dc5 Mon Sep 17 00:00:00 2001 From: Jing Yu Date: Thu, 22 Jul 2010 14:03:48 -0700 Subject: commit gcc-4.4.3 which is used to build gcc-4.4.3 Android toolchain in master. The source is based on fsf gcc-4.4.3 and contains local patches which are recorded in gcc-4.4.3/README.google. Change-Id: Id8c6d6927df274ae9749196a1cc24dbd9abc9887 --- gcc-4.4.3/libobjc/init.c | 894 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 894 insertions(+) create mode 100644 gcc-4.4.3/libobjc/init.c (limited to 'gcc-4.4.3/libobjc/init.c') diff --git a/gcc-4.4.3/libobjc/init.c b/gcc-4.4.3/libobjc/init.c new file mode 100644 index 000000000..138f90774 --- /dev/null +++ b/gcc-4.4.3/libobjc/init.c @@ -0,0 +1,894 @@ +/* GNU Objective C Runtime initialization + Copyright (C) 1993, 1995, 1996, 1997, 2002, 2009 + Free Software Foundation, Inc. + Contributed by Kresten Krab Thorup + +load support contributed by Ovidiu Predescu + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under the +terms of the GNU General Public License as published by the Free Software +Foundation; either version 3, or (at your option) any later version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more +details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +. */ + +#include "objc/runtime.h" + +/* The version number of this runtime. This must match the number + defined in gcc (objc-act.c). */ +#define OBJC_VERSION 8 +#define PROTOCOL_VERSION 2 + +/* This list contains all modules currently loaded into the runtime. */ +static struct objc_list *__objc_module_list = 0; /* !T:MUTEX */ + +/* This list contains all proto_list's not yet assigned class links. */ +static struct objc_list *unclaimed_proto_list = 0; /* !T:MUTEX */ + +/* List of unresolved static instances. */ +static struct objc_list *uninitialized_statics = 0; /* !T:MUTEX */ + +/* Global runtime "write" mutex. */ +objc_mutex_t __objc_runtime_mutex = 0; + +/* Number of threads that are alive. */ +int __objc_runtime_threads_alive = 1; /* !T:MUTEX */ + +/* Check compiler vs runtime version. */ +static void init_check_module_version (Module_t); + +/* Assign isa links to protos. */ +static void __objc_init_protocols (struct objc_protocol_list *protos); + +/* Add protocol to class. */ +static void __objc_class_add_protocols (Class, struct objc_protocol_list *); + +/* This is a hook which is called by __objc_exec_class every time a + class or a category is loaded into the runtime. This may e.g. help + a dynamic loader determine the classes that have been loaded when + an object file is dynamically linked in. */ +void (*_objc_load_callback) (Class class, Category *category); /* !T:SAFE */ + +/* Is all categories/classes resolved? */ +BOOL __objc_dangling_categories = NO; /* !T:UNUSED */ + +extern SEL +__sel_register_typed_name (const char *name, const char *types, + struct objc_selector *orig, BOOL is_const); + +/* Sends +load to all classes and categories in certain situations. */ +static void objc_send_load (void); + +/* Inserts all the classes defined in module in a tree of classes that + resembles the class hierarchy. This tree is traversed in preorder + and the classes in its nodes receive the +load message if these + methods were not executed before. The algorithm ensures that when + the +load method of a class is executed all the superclasses have + been already received the +load message. */ +static void __objc_create_classes_tree (Module_t module); + +static void __objc_call_callback (Module_t module); + +/* A special version that works only before the classes are completely + installed in the runtime. */ +static BOOL class_is_subclass_of_class (Class class, Class superclass); + +typedef struct objc_class_tree { + Class class; + struct objc_list *subclasses; /* `head' is pointer to an objc_class_tree */ +} objc_class_tree; + +/* This is a linked list of objc_class_tree trees. The head of these + trees are root classes (their super class is Nil). These different + trees represent different class hierarchies. */ +static struct objc_list *__objc_class_tree_list = NULL; + +/* Keeps the +load methods who have been already executed. This hash + should not be destroyed during the execution of the program. */ +static cache_ptr __objc_load_methods = NULL; + +/* This function is used when building the class tree used to send + ordinately the +load message to all classes needing it. The tree + is really needed so that superclasses will get the message before + subclasses. + + This tree will contain classes which are being loaded (or have just + being loaded), and whose super_class pointers have not yet been + resolved. This implies that their super_class pointers point to a + string with the name of the superclass; when the first message is + sent to the class (/an object of that class) the class links will + be resolved, which will replace the super_class pointers with + pointers to the actual superclasses. + + Unfortunately, the tree might also contain classes which had been + loaded previously, and whose class links have already been + resolved. + + This function returns the superclass of a class in both cases, and + can be used to build the determine the class relationships while + building the tree. +*/ +static Class class_superclass_of_class (Class class) +{ + char *super_class_name; + + /* If the class links have been resolved, use the resolved + * links. */ + if (CLS_ISRESOLV (class)) + return class->super_class; + + /* Else, 'class' has not yet been resolved. This means that its + * super_class pointer is really the name of the super class (rather + * than a pointer to the actual superclass). */ + super_class_name = (char *)class->super_class; + + /* Return Nil for a root class. */ + if (super_class_name == NULL) + return Nil; + + /* Lookup the superclass of non-root classes. */ + return objc_lookup_class (super_class_name); +} + + +/* Creates a tree of classes whose topmost class is directly inherited + from `upper' and the bottom class in this tree is + `bottom_class'. The classes in this tree are super classes of + `bottom_class'. `subclasses' member of each tree node point to the + next subclass tree node. */ + +static objc_class_tree * +create_tree_of_subclasses_inherited_from (Class bottom_class, Class upper) +{ + Class superclass = bottom_class->super_class ? + objc_lookup_class ((char *) bottom_class->super_class) + : Nil; + + objc_class_tree *tree, *prev; + + DEBUG_PRINTF ("create_tree_of_subclasses_inherited_from:"); + DEBUG_PRINTF ("bottom_class = %s, upper = %s\n", + (bottom_class ? bottom_class->name : NULL), + (upper ? upper->name : NULL)); + + tree = prev = objc_calloc (1, sizeof (objc_class_tree)); + prev->class = bottom_class; + + while (superclass != upper) + { + tree = objc_calloc (1, sizeof (objc_class_tree)); + tree->class = superclass; + tree->subclasses = list_cons (prev, tree->subclasses); + superclass = class_superclass_of_class (superclass); + prev = tree; + } + + return tree; +} + +/* Insert the `class' into the proper place in the `tree' class + hierarchy. This function returns a new tree if the class has been + successfully inserted into the tree or NULL if the class is not + part of the classes hierarchy described by `tree'. This function is + private to objc_tree_insert_class (), you should not call it + directly. */ + +static objc_class_tree * +__objc_tree_insert_class (objc_class_tree *tree, Class class) +{ + DEBUG_PRINTF ("__objc_tree_insert_class: tree = %x, class = %s\n", + tree, class->name); + + if (tree == NULL) + return create_tree_of_subclasses_inherited_from (class, NULL); + else if (class == tree->class) + { + /* `class' has been already inserted */ + DEBUG_PRINTF ("1. class %s was previously inserted\n", class->name); + return tree; + } + else if (class_superclass_of_class (class) == tree->class) + { + /* If class is a direct subclass of tree->class then add class to the + list of subclasses. First check to see if it wasn't already + inserted. */ + struct objc_list *list = tree->subclasses; + objc_class_tree *node; + + while (list) + { + /* Class has been already inserted; do nothing just return + the tree. */ + if (((objc_class_tree *) list->head)->class == class) + { + DEBUG_PRINTF ("2. class %s was previously inserted\n", + class->name); + return tree; + } + list = list->tail; + } + + /* Create a new node class and insert it into the list of subclasses */ + node = objc_calloc (1, sizeof (objc_class_tree)); + node->class = class; + tree->subclasses = list_cons (node, tree->subclasses); + DEBUG_PRINTF ("3. class %s inserted\n", class->name); + return tree; + } + else + { + /* The class is not a direct subclass of tree->class. Search for + class's superclasses in the list of subclasses. */ + struct objc_list *subclasses = tree->subclasses; + + /* Precondition: the class must be a subclass of tree->class; + otherwise return NULL to indicate our caller that it must + take the next tree. */ + if (! class_is_subclass_of_class (class, tree->class)) + return NULL; + + for (; subclasses != NULL; subclasses = subclasses->tail) + { + Class aClass = ((objc_class_tree *) (subclasses->head))->class; + + if (class_is_subclass_of_class (class, aClass)) + { + /* If we found one of class's superclasses we insert the + class into its subtree and return the original tree + since nothing has been changed. */ + subclasses->head + = __objc_tree_insert_class (subclasses->head, class); + DEBUG_PRINTF ("4. class %s inserted\n", class->name); + return tree; + } + } + + /* We haven't found a subclass of `class' in the `subclasses' + list. Create a new tree of classes whose topmost class is a + direct subclass of tree->class. */ + { + objc_class_tree *new_tree + = create_tree_of_subclasses_inherited_from (class, tree->class); + tree->subclasses = list_cons (new_tree, tree->subclasses); + DEBUG_PRINTF ("5. class %s inserted\n", class->name); + return tree; + } + } +} + +/* This function inserts `class' in the right tree hierarchy classes. */ + +static void +objc_tree_insert_class (Class class) +{ + struct objc_list *list_node; + objc_class_tree *tree; + + list_node = __objc_class_tree_list; + while (list_node) + { + tree = __objc_tree_insert_class (list_node->head, class); + if (tree) + { + list_node->head = tree; + break; + } + else + list_node = list_node->tail; + } + + /* If the list was finished but the class hasn't been inserted, + insert it here. */ + if (! list_node) + { + __objc_class_tree_list = list_cons (NULL, __objc_class_tree_list); + __objc_class_tree_list->head = __objc_tree_insert_class (NULL, class); + } +} + +/* Traverse tree in preorder. Used to send +load. */ + +static void +objc_preorder_traverse (objc_class_tree *tree, + int level, + void (*function) (objc_class_tree *, int)) +{ + struct objc_list *node; + + (*function) (tree, level); + for (node = tree->subclasses; node; node = node->tail) + objc_preorder_traverse (node->head, level + 1, function); +} + +/* Traverse tree in postorder. Used to destroy a tree. */ + +static void +objc_postorder_traverse (objc_class_tree *tree, + int level, + void (*function) (objc_class_tree *, int)) +{ + struct objc_list *node; + + for (node = tree->subclasses; node; node = node->tail) + objc_postorder_traverse (node->head, level + 1, function); + (*function) (tree, level); +} + +/* Used to print a tree class hierarchy. */ + +#ifdef DEBUG +static void +__objc_tree_print (objc_class_tree *tree, int level) +{ + int i; + + for (i = 0; i < level; i++) + printf (" "); + printf ("%s\n", tree->class->name); +} +#endif + +/* Walks on a linked list of methods in the reverse order and executes + all the methods corresponding to `op' selector. Walking in the + reverse order assures the +load of class is executed first and then + +load of categories because of the way in which categories are + added to the class methods. */ + +static void +__objc_send_message_in_list (MethodList_t method_list, Class class, SEL op) +{ + int i; + + if (! method_list) + return; + + /* First execute the `op' message in the following method lists */ + __objc_send_message_in_list (method_list->method_next, class, op); + + /* Search the method list. */ + for (i = 0; i < method_list->method_count; i++) + { + Method_t mth = &method_list->method_list[i]; + + if (mth->method_name && sel_eq (mth->method_name, op) + && ! objc_hash_is_key_in_hash (__objc_load_methods, mth->method_imp)) + { + /* Add this method into the +load hash table */ + objc_hash_add (&__objc_load_methods, + mth->method_imp, + mth->method_imp); + + DEBUG_PRINTF ("sending +load in class: %s\n", class->name); + + /* The method was found and wasn't previously executed. */ + (*mth->method_imp) ((id)class, mth->method_name); + + break; + } + } +} + +static void +__objc_send_load (objc_class_tree *tree, + int level __attribute__ ((__unused__))) +{ + static SEL load_sel = 0; + Class class = tree->class; + MethodList_t method_list = class->class_pointer->methods; + + if (! load_sel) + load_sel = sel_register_name ("load"); + + __objc_send_message_in_list (method_list, class, load_sel); +} + +static void +__objc_destroy_class_tree_node (objc_class_tree *tree, + int level __attribute__ ((__unused__))) +{ + objc_free (tree); +} + +/* This is used to check if the relationship between two classes + before the runtime completely installs the classes. */ + +static BOOL +class_is_subclass_of_class (Class class, Class superclass) +{ + for (; class != Nil;) + { + if (class == superclass) + return YES; + class = class_superclass_of_class (class); + } + + return NO; +} + +/* This list contains all the classes in the runtime system for whom + their superclasses are not yet known to the runtime. */ +static struct objc_list *unresolved_classes = 0; + +/* Extern function used to reference the Object and NXConstantString + classes. */ + +extern void __objc_force_linking (void); + +void +__objc_force_linking (void) +{ + extern void __objc_linking (void); + __objc_linking (); +} + +/* Run through the statics list, removing modules as soon as all its + statics have been initialized. */ + +static void +objc_init_statics (void) +{ + struct objc_list **cell = &uninitialized_statics; + struct objc_static_instances **statics_in_module; + + objc_mutex_lock (__objc_runtime_mutex); + + while (*cell) + { + int module_initialized = 1; + + for (statics_in_module = (*cell)->head; + *statics_in_module; statics_in_module++) + { + struct objc_static_instances *statics = *statics_in_module; + Class class = objc_lookup_class (statics->class_name); + + if (! class) + module_initialized = 0; + /* Actually, the static's class_pointer will be NULL when we + haven't been here before. However, the comparison is to be + reminded of taking into account class posing and to think about + possible semantics... */ + else if (class != statics->instances[0]->class_pointer) + { + id *inst; + + for (inst = &statics->instances[0]; *inst; inst++) + { + (*inst)->class_pointer = class; + + /* ??? Make sure the object will not be freed. With + refcounting, invoke `-retain'. Without refcounting, do + nothing and hope that `-free' will never be invoked. */ + + /* ??? Send the object an `-initStatic' or something to + that effect now or later on? What are the semantics of + statically allocated instances, besides the trivial + NXConstantString, anyway? */ + } + } + } + if (module_initialized) + { + /* Remove this module from the uninitialized list. */ + struct objc_list *this = *cell; + *cell = this->tail; + objc_free (this); + } + else + cell = &(*cell)->tail; + } + + objc_mutex_unlock (__objc_runtime_mutex); +} /* objc_init_statics */ + +/* This function is called by constructor functions generated for each + module compiled. (_GLOBAL_$I$...) The purpose of this function is + to gather the module pointers so that they may be processed by the + initialization routines as soon as possible. */ + +void +__objc_exec_class (Module_t module) +{ + /* Have we processed any constructors previously? This flag is used to + indicate that some global data structures need to be built. */ + static BOOL previous_constructors = 0; + + static struct objc_list *unclaimed_categories = 0; + + /* The symbol table (defined in objc-api.h) generated by gcc */ + Symtab_t symtab = module->symtab; + + /* The statics in this module */ + struct objc_static_instances **statics + = symtab->defs[symtab->cls_def_cnt + symtab->cat_def_cnt]; + + /* Entry used to traverse hash lists */ + struct objc_list **cell; + + /* The table of selector references for this module */ + SEL selectors = symtab->refs; + + /* dummy counter */ + int i; + + DEBUG_PRINTF ("received module: %s\n", module->name); + + /* check gcc version */ + init_check_module_version (module); + + /* On the first call of this routine, initialize some data structures. */ + if (! previous_constructors) + { + /* Initialize thread-safe system */ + __objc_init_thread_system (); + __objc_runtime_threads_alive = 1; + __objc_runtime_mutex = objc_mutex_allocate (); + + __objc_init_selector_tables (); + __objc_init_class_tables (); + __objc_init_dispatch_tables (); + __objc_class_tree_list = list_cons (NULL, __objc_class_tree_list); + __objc_load_methods = objc_hash_new (128, + (hash_func_type)objc_hash_ptr, + objc_compare_ptrs); + previous_constructors = 1; + } + + /* Save the module pointer for later processing. (not currently used) */ + objc_mutex_lock (__objc_runtime_mutex); + __objc_module_list = list_cons (module, __objc_module_list); + + /* Replace referenced selectors from names to SEL's. */ + if (selectors) + { + for (i = 0; selectors[i].sel_id; ++i) + { + const char *name, *type; + name = (char *) selectors[i].sel_id; + type = (char *) selectors[i].sel_types; + /* Constructors are constant static data so we can safely store + pointers to them in the runtime structures. is_const == YES */ + __sel_register_typed_name (name, type, + (struct objc_selector *) &(selectors[i]), + YES); + } + } + + /* Parse the classes in the load module and gather selector information. */ + DEBUG_PRINTF ("gathering selectors from module: %s\n", module->name); + for (i = 0; i < symtab->cls_def_cnt; ++i) + { + Class class = (Class) symtab->defs[i]; + const char *superclass = (char *) class->super_class; + + /* Make sure we have what we think. */ + assert (CLS_ISCLASS (class)); + assert (CLS_ISMETA (class->class_pointer)); + DEBUG_PRINTF ("phase 1, processing class: %s\n", class->name); + + /* Initialize the subclass list to be NULL. + In some cases it isn't and this crashes the program. */ + class->subclass_list = NULL; + + /* Store the class in the class table and assign class numbers. */ + __objc_add_class_to_hash (class); + + /* Register all of the selectors in the class and meta class. */ + __objc_register_selectors_from_class (class); + __objc_register_selectors_from_class ((Class) class->class_pointer); + + /* Install the fake dispatch tables */ + __objc_install_premature_dtable (class); + __objc_install_premature_dtable (class->class_pointer); + + /* Register the instance methods as class methods, this is + only done for root classes. */ + __objc_register_instance_methods_to_class (class); + + if (class->protocols) + __objc_init_protocols (class->protocols); + + /* Check to see if the superclass is known in this point. If it's not + add the class to the unresolved_classes list. */ + if (superclass && ! objc_lookup_class (superclass)) + unresolved_classes = list_cons (class, unresolved_classes); + } + + /* Process category information from the module. */ + for (i = 0; i < symtab->cat_def_cnt; ++i) + { + Category_t category = symtab->defs[i + symtab->cls_def_cnt]; + Class class = objc_lookup_class (category->class_name); + + /* If the class for the category exists then append its methods. */ + if (class) + { + + DEBUG_PRINTF ("processing categories from (module,object): %s, %s\n", + module->name, + class->name); + + /* Do instance methods. */ + if (category->instance_methods) + class_add_method_list (class, category->instance_methods); + + /* Do class methods. */ + if (category->class_methods) + class_add_method_list ((Class) class->class_pointer, + category->class_methods); + + if (category->protocols) + { + __objc_init_protocols (category->protocols); + __objc_class_add_protocols (class, category->protocols); + } + + /* Register the instance methods as class methods, this is + only done for root classes. */ + __objc_register_instance_methods_to_class (class); + } + else + { + /* The object to which the category methods belong can't be found. + Save the information. */ + unclaimed_categories = list_cons (category, unclaimed_categories); + } + } + + if (statics) + uninitialized_statics = list_cons (statics, uninitialized_statics); + if (uninitialized_statics) + objc_init_statics (); + + /* Scan the unclaimed category hash. Attempt to attach any unclaimed + categories to objects. */ + for (cell = &unclaimed_categories; *cell; ) + { + Category_t category = (*cell)->head; + Class class = objc_lookup_class (category->class_name); + + if (class) + { + DEBUG_PRINTF ("attaching stored categories to object: %s\n", + class->name); + + list_remove_head (cell); + + if (category->instance_methods) + class_add_method_list (class, category->instance_methods); + + if (category->class_methods) + class_add_method_list ((Class) class->class_pointer, + category->class_methods); + + if (category->protocols) + { + __objc_init_protocols (category->protocols); + __objc_class_add_protocols (class, category->protocols); + } + + /* Register the instance methods as class methods, this is + only done for root classes. */ + __objc_register_instance_methods_to_class (class); + } + else + cell = &(*cell)->tail; + } + + if (unclaimed_proto_list && objc_lookup_class ("Protocol")) + { + list_mapcar (unclaimed_proto_list, + (void (*) (void *))__objc_init_protocols); + list_free (unclaimed_proto_list); + unclaimed_proto_list = 0; + } + + objc_send_load (); + + objc_mutex_unlock (__objc_runtime_mutex); +} + +static void +objc_send_load (void) +{ + if (! __objc_module_list) + return; + + /* Try to find out if all the classes loaded so far also have their + superclasses known to the runtime. We suppose that the objects + that are allocated in the +load method are in general of a class + declared in the same module. */ + if (unresolved_classes) + { + Class class = unresolved_classes->head; + + while (objc_lookup_class ((char *) class->super_class)) + { + list_remove_head (&unresolved_classes); + if (unresolved_classes) + class = unresolved_classes->head; + else + break; + } + + /* If we still have classes for whom we don't have yet their + super classes known to the runtime we don't send the +load + messages. */ + if (unresolved_classes) + return; + } + + /* Special check to allow creating and sending messages to constant + strings in +load methods. If these classes are not yet known, + even if all the other classes are known, delay sending of +load. */ + if (! objc_lookup_class ("NXConstantString") || + ! objc_lookup_class ("Object")) + return; + + /* Iterate over all modules in the __objc_module_list and call on + them the __objc_create_classes_tree function. This function + creates a tree of classes that resembles the class hierarchy. */ + list_mapcar (__objc_module_list, + (void (*) (void *)) __objc_create_classes_tree); + + while (__objc_class_tree_list) + { +#ifdef DEBUG + objc_preorder_traverse (__objc_class_tree_list->head, + 0, __objc_tree_print); +#endif + objc_preorder_traverse (__objc_class_tree_list->head, + 0, __objc_send_load); + objc_postorder_traverse (__objc_class_tree_list->head, + 0, __objc_destroy_class_tree_node); + list_remove_head (&__objc_class_tree_list); + } + + list_mapcar (__objc_module_list, (void (*) (void *)) __objc_call_callback); + list_free (__objc_module_list); + __objc_module_list = NULL; +} + +static void +__objc_create_classes_tree (Module_t module) +{ + /* The runtime mutex is locked in this point */ + + Symtab_t symtab = module->symtab; + int i; + + /* Iterate thru classes defined in this module and insert them in + the classes tree hierarchy. */ + for (i = 0; i < symtab->cls_def_cnt; i++) + { + Class class = (Class) symtab->defs[i]; + + objc_tree_insert_class (class); + } +} + +static void +__objc_call_callback (Module_t module) +{ + /* The runtime mutex is locked in this point. */ + + Symtab_t symtab = module->symtab; + int i; + + /* Iterate thru classes defined in this module and call the callback + for each one. */ + for (i = 0; i < symtab->cls_def_cnt; i++) + { + Class class = (Class) symtab->defs[i]; + + /* Call the _objc_load_callback for this class. */ + if (_objc_load_callback) + _objc_load_callback (class, 0); + } + + /* Call the _objc_load_callback for categories. Don't register the + instance methods as class methods for categories to root classes + since they were already added in the class. */ + for (i = 0; i < symtab->cat_def_cnt; i++) + { + Category_t category = symtab->defs[i + symtab->cls_def_cnt]; + Class class = objc_lookup_class (category->class_name); + + if (_objc_load_callback) + _objc_load_callback (class, category); + } +} + +/* Sanity check the version of gcc used to compile `module'. */ + +static void +init_check_module_version (Module_t module) +{ + if ((module->version != OBJC_VERSION) || (module->size != sizeof (Module))) + { + int code; + + if (module->version > OBJC_VERSION) + code = OBJC_ERR_OBJC_VERSION; + else if (module->version < OBJC_VERSION) + code = OBJC_ERR_GCC_VERSION; + else + code = OBJC_ERR_MODULE_SIZE; + + objc_error (nil, code, "Module %s version %d doesn't match runtime %d\n", + module->name, (int)module->version, OBJC_VERSION); + } +} + +static void +__objc_init_protocols (struct objc_protocol_list *protos) +{ + size_t i; + static Class proto_class = 0; + + if (! protos) + return; + + objc_mutex_lock (__objc_runtime_mutex); + + if (! proto_class) + proto_class = objc_lookup_class ("Protocol"); + + if (! proto_class) + { + unclaimed_proto_list = list_cons (protos, unclaimed_proto_list); + objc_mutex_unlock (__objc_runtime_mutex); + return; + } + +#if 0 + assert (protos->next == 0); /* only single ones allowed */ +#endif + + for (i = 0; i < protos->count; i++) + { + struct objc_protocol *aProto = protos->list[i]; + if (((size_t)aProto->class_pointer) == PROTOCOL_VERSION) + { + /* assign class pointer */ + aProto->class_pointer = proto_class; + + /* init super protocols */ + __objc_init_protocols (aProto->protocol_list); + } + else if (protos->list[i]->class_pointer != proto_class) + { + objc_error (nil, OBJC_ERR_PROTOCOL_VERSION, + "Version %d doesn't match runtime protocol version %d\n", + (int) ((char *) protos->list[i]->class_pointer + - (char *) 0), + PROTOCOL_VERSION); + } + } + + objc_mutex_unlock (__objc_runtime_mutex); +} + +static void +__objc_class_add_protocols (Class class, struct objc_protocol_list *protos) +{ + /* Well... */ + if (! protos) + return; + + /* Add it... */ + protos->next = class->protocols; + class->protocols = protos; +} -- cgit v1.2.3