/* * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, * 2018 * Jonathan Schleifer * * All rights reserved. * * This file is part of ObjFW. It may be distributed under the terms of the * Q Public License 1.0, which can be found in the file LICENSE.QPL included in * the packaging of this file. * * Alternatively, it may be distributed under the terms of the GNU General * Public License, either version 2 or 3, which can be found in the file * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this * file. */ #include "config.h" #include "platform.h" #if !defined(__has_feature) || !__has_feature(nullability) # ifndef _Nonnull # define _Nonnull # endif # ifndef _Nullable # define _Nullable # endif #endif struct objc_abi_class { struct objc_abi_class *_Nonnull metaclass; const char *_Nullable superclass; const char *_Nonnull name; unsigned long version; unsigned long info; long instance_size; void *_Nullable ivars; struct objc_abi_method_list *_Nullable methodlist; void *_Nullable dtable; void *_Nullable subclass_list; void *_Nullable sibling_class; void *_Nullable protocols; void *_Nullable gc_object_type; long abi_version; int32_t *_Nonnull *_Nullable ivar_offsets; void *_Nullable properties; }; struct objc_abi_selector { const char *_Nonnull name; const char *_Nullable types; }; struct objc_abi_method { struct objc_abi_selector sel; IMP _Nonnull imp; }; struct objc_abi_method_list { struct objc_abi_method_list *_Nullable next; unsigned int count; struct objc_abi_method methods[1]; }; struct objc_abi_category { const char *_Nonnull category_name; const char *_Nonnull class_name; struct objc_abi_method_list *_Nullable instance_methods; struct objc_abi_method_list *_Nullable class_methods; struct objc_protocol_list *_Nullable protocols; }; struct objc_abi_method_description { const char *_Nonnull name; const char *_Nonnull types; }; struct objc_abi_method_description_list { int count; struct objc_abi_method_description list[1]; }; struct objc_abi_static_instances { const char *_Nonnull class_name; id _Nullable instances[1]; }; struct objc_abi_symtab { unsigned long unknown; struct objc_abi_selector *_Nullable sel_refs; uint16_t cls_def_cnt; uint16_t cat_def_cnt; void *_Nonnull defs[1]; }; struct objc_abi_module { unsigned long version; /* 9 = non-fragile */ unsigned long size; const char *_Nullable name; struct objc_abi_symtab *_Nonnull symtab; }; struct objc_hashtable_bucket { const void *_Nonnull key, *_Nonnull obj; uint32_t hash; }; struct objc_hashtable { uint32_t (*_Nonnull hash)(const void *_Nonnull key); bool (*_Nonnull equal)(const void *_Nonnull key1, const void *_Nonnull key2); uint32_t count, size; struct objc_hashtable_bucket *_Nonnull *_Nullable data; }; struct objc_sparsearray { struct objc_sparsearray_data { void *_Nullable next[256]; } *_Nonnull data; uint8_t index_size; }; struct objc_dtable { struct objc_dtable_level2 { #ifdef OF_SELUID24 struct objc_dtable_level3 { IMP _Nullable buckets[256]; } *_Nonnull buckets[256]; #else IMP _Nullable buckets[256]; #endif } *_Nonnull buckets[256]; }; extern void objc_register_all_categories(struct objc_abi_symtab *_Nonnull); extern struct objc_category *_Nullable *_Nullable objc_categories_for_class(Class _Nonnull); extern void objc_unregister_all_categories(void); extern void objc_initialize_class(Class _Nonnull); extern void objc_update_dtable(Class _Nonnull); extern void objc_register_all_classes(struct objc_abi_symtab *_Nonnull); extern Class _Nullable objc_classname_to_class(const char *_Nonnull, bool); extern void objc_unregister_class(Class _Nonnull); extern void objc_unregister_all_classes(void); extern uint32_t objc_hash_string(const void *_Nonnull); extern bool objc_equal_string(const void *_Nonnull, const void *_Nonnull); extern struct objc_hashtable *_Nonnull objc_hashtable_new( uint32_t (*_Nonnull)(const void *_Nonnull), bool (*_Nonnull)(const void *_Nonnull, const void *_Nonnull), uint32_t); extern struct objc_hashtable_bucket objc_deleted_bucket; extern void objc_hashtable_set(struct objc_hashtable *_Nonnull, const void *_Nonnull, const void *_Nonnull); extern void *_Nullable objc_hashtable_get(struct objc_hashtable *_Nonnull, const void *_Nonnull); extern void objc_hashtable_delete(struct objc_hashtable *_Nonnull, const void *_Nonnull); extern void objc_hashtable_free(struct objc_hashtable *_Nonnull); extern void objc_register_selector(struct objc_abi_selector *_Nonnull); extern void objc_register_all_selectors(struct objc_abi_symtab *_Nonnull); extern void objc_unregister_all_selectors(void); extern struct objc_sparsearray *_Nonnull objc_sparsearray_new(uint8_t); extern void *_Nullable objc_sparsearray_get(struct objc_sparsearray *_Nonnull, uintptr_t); extern void objc_sparsearray_set(struct objc_sparsearray *_Nonnull, uintptr_t, void *_Nullable); extern void objc_sparsearray_free(struct objc_sparsearray *_Nonnull); extern struct objc_dtable *_Nonnull objc_dtable_new(void); extern void objc_dtable_copy(struct objc_dtable *_Nonnull, struct objc_dtable *_Nonnull); extern void objc_dtable_set(struct objc_dtable *_Nonnull, uint32_t, IMP _Nullable); extern void objc_dtable_free(struct objc_dtable *_Nonnull); extern void objc_dtable_cleanup(void); extern void objc_init_static_instances(struct objc_abi_symtab *_Nonnull); extern void objc_forget_pending_static_instances(void); #ifdef OF_HAVE_THREADS extern void objc_global_mutex_lock(void); extern void objc_global_mutex_unlock(void); extern void objc_global_mutex_free(void); #else # define objc_global_mutex_lock() # define objc_global_mutex_unlock() # define objc_global_mutex_free() #endif static inline IMP _Nullable objc_dtable_get(const struct objc_dtable *_Nonnull dtable, uint32_t idx) { #ifdef OF_SELUID24 uint8_t i = idx >> 16; uint8_t j = idx >> 8; uint8_t k = idx; return dtable->buckets[i]->buckets[j]->buckets[k]; #else uint8_t i = idx >> 8; uint8_t j = idx; return dtable->buckets[i]->buckets[j]; #endif } #if defined(OF_ELF) # if defined(OF_X86_64) || defined(OF_X86) || defined(OF_POWERPC) || \ defined(OF_ARM64) || defined(OF_ARM) || \ defined(OF_MIPS64_N64) || defined(OF_MIPS) || \ defined(OF_SPARC64) || defined(OF_SPARC) # define OF_ASM_LOOKUP # endif #elif defined(OF_MACH_O) # if defined(OF_X86_64) || defined(OF_POWERPC) # define OF_ASM_LOOKUP # endif #elif defined(OF_WINDOWS) # if defined(OF_X86_64) || defined(OF_X86) # define OF_ASM_LOOKUP # endif #endif #define OBJC_ERROR(...) \ { \ fprintf(stderr, "[objc @ " __FILE__ ":%d] ", __LINE__); \ fprintf(stderr, __VA_ARGS__); \ fputs("\n", stderr); \ abort(); \ }