/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
* Jonathan Schleifer <js@heap.zone>
*
* 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(); \
}