parent
3e676e9922
commit
b2055d6de3
|
@ -1,3 +1,23 @@
|
|||
# GNU Objective C Runtime Makefile
|
||||
# Copyright (C) 1993 Free Software Foundation, Inc.
|
||||
#
|
||||
# Author: Kresten Krab Thorup
|
||||
#
|
||||
# This file is part of GNU CC.
|
||||
#
|
||||
# GNU CC 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 2, or (at your option) any later version.
|
||||
#
|
||||
# GNU CC 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.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License along with
|
||||
# GNU CC; see the file COPYING. If not, write to the Free Software
|
||||
# Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
#
|
||||
# This makefile is run by the parent dir's makefile.
|
||||
# thisdir1=`pwd`; \
|
||||
# srcdir1=`cd $(srcdir); pwd`; \
|
||||
|
@ -30,21 +50,48 @@ SUBDIR_INCLUDES = -I. -I.. -I$(srcdir) -I$(srcdir)/config
|
|||
all:
|
||||
cd ..; $(MAKE) sublibobjc.a
|
||||
|
||||
libobjc.a: core.o hash.o object.o
|
||||
OBJS = hash.o sarray.o objc-class.o objc-msg.o objc-init.o objc-archive.o \
|
||||
objc-sel.o objc-object.o objc-misc.o Object.o Protocol.o
|
||||
|
||||
all: libobjc.a
|
||||
|
||||
runtime.h: hash.h list.h sarray.h objc.h objc-api.h
|
||||
|
||||
Object.m: Object.h
|
||||
|
||||
Object.h: objc.h objc-api.h
|
||||
|
||||
sarray.c: sarray.h
|
||||
|
||||
hash.c: hash.h
|
||||
|
||||
objc-class.c: runtime.h
|
||||
|
||||
objc-msg.c: runtime.h
|
||||
|
||||
objc-init.c: runtime.h
|
||||
|
||||
objc-sel.c: runtime.h
|
||||
|
||||
objc-object.c: runtime.h
|
||||
|
||||
objc-class.o: objc-class.c
|
||||
|
||||
objc-msg.o: objc-msg.c
|
||||
|
||||
objc-init.o: objc-init.c
|
||||
|
||||
objc-sel.o: objc-sel.c
|
||||
|
||||
objc-object.o: objc-object.c
|
||||
|
||||
libobjc.a: $(OBJS)
|
||||
-rm -f libobjc.a
|
||||
$(AR) rc libobjc.a object.o core.o hash.o
|
||||
$(AR) rc libobjc.a $(OBJS)
|
||||
# ranlib is run in the parent directory's makefile.
|
||||
|
||||
OBJC_H = objc.h objc-proto.h record.h $(srcdir)/assert.h $(srcdir)/gstdarg.h
|
||||
HASH_H = hash.h mutex.h
|
||||
|
||||
core.o: core.c $(OBJC_H) $(HASH_H) $(srcdir)/gstddef.h
|
||||
hash.o: hash.c $(OBJC_H) $(HASH_H) $(srcdir)/gstddef.h
|
||||
object.o: object.m object.h $(OBJC_H)
|
||||
$(GCC_FOR_TARGET) -c $(GCC_CFLAGS) $(SUBDIR_INCLUDES) $<
|
||||
|
||||
mostlyclean:
|
||||
-rm -f core.o hash.o object.o libobjc.a
|
||||
-rm -f $(OBJS) libobjc.a
|
||||
clean: mostlyclean
|
||||
distclean: mostlyclean
|
||||
extraclean: mostlyclean
|
||||
|
|
|
@ -1,5 +1,5 @@
|
|||
/* Hash tables for Objective C method dispatch.
|
||||
Copyright (C) 1992 Free Software Foundation, Inc.
|
||||
/* Hash tables for Objective C internal structures
|
||||
Copyright (C) 1993 Free Software Foundation, Inc.
|
||||
|
||||
This file is part of GNU CC.
|
||||
|
||||
|
@ -23,15 +23,12 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|||
This exception does not however invalidate any other reasons why
|
||||
the executable file might be covered by the GNU General Public License. */
|
||||
|
||||
#include "tconfig.h"
|
||||
#include "gstddef.h"
|
||||
#include "gstdarg.h"
|
||||
#include "assert.h"
|
||||
|
||||
#include "hash.h"
|
||||
#include "objc.h"
|
||||
#include "objc-proto.h"
|
||||
#include <objc/hash.h>
|
||||
#include <objc/objc.h>
|
||||
|
||||
#include "runtime.h" /* for DEBUG_PRINTF */
|
||||
|
||||
/* These two macros determine when a hash table is full and
|
||||
by how much it should be expanded respectively.
|
||||
|
|
|
@ -1,5 +1,5 @@
|
|||
/* Hash tables for Objective C method dispatch.
|
||||
Copyright (C) 1992 Free Software Foundation, Inc.
|
||||
Copyright (C) 1993 Free Software Foundation, Inc.
|
||||
|
||||
This file is part of GNU CC.
|
||||
|
||||
|
|
410
gcc/objc/objc.h
410
gcc/objc/objc.h
|
@ -1,5 +1,5 @@
|
|||
/* Basic data types for Objective C.
|
||||
Copyright (C) 1992 Free Software Foundation, Inc.
|
||||
Copyright (C) 1993 Free Software Foundation, Inc.
|
||||
|
||||
This file is part of GNU CC.
|
||||
|
||||
|
@ -22,21 +22,30 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|||
the resulting executable to be covered by the GNU General Public License.
|
||||
This exception does not however invalidate any other reasons why
|
||||
the executable file might be covered by the GNU General Public License. */
|
||||
|
||||
|
||||
#ifndef __objc_INCLUDE_GNU
|
||||
#define __objc_INCLUDE_GNU
|
||||
|
||||
/* If someone is using a c++ compiler then adjust the types in the
|
||||
file back to C. */
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
|
||||
/*
|
||||
** Hash-cache or sparse arrays?
|
||||
*/
|
||||
#define OBJC_SPARSE_LOOKUP /* use sparse-arrays for lookup */
|
||||
/* #define OBJC_HASH_LOOKUP */ /* use hash-cache for lookup */
|
||||
|
||||
#ifdef OBJC_SPARSE_LOOKUP
|
||||
extern const char* __objc_sparse_lookup_id;
|
||||
#endif
|
||||
|
||||
#include "record.h"
|
||||
|
||||
/* This duplicates the beginning of object.h.
|
||||
Except that we use Class_t for a pointer, whereas it uses Class. */
|
||||
#ifdef OBJC_HASH_LOOKUP
|
||||
extern const char* __objc_hash_lookup_id;
|
||||
#endif
|
||||
|
||||
|
||||
#include <stddef.h>
|
||||
#include <stdarg.h>
|
||||
#include <stdio.h>
|
||||
|
||||
|
||||
#define nil (id)0 /* id of Nil instance */
|
||||
#define Nil (Class_t)0 /* id of Nil class */
|
||||
|
@ -48,21 +57,41 @@ typedef char BOOL;
|
|||
#define NO (BOOL)0
|
||||
|
||||
|
||||
/* Definition of a selector. Selectors are really of type char*. The
|
||||
run-time hashes the string's address to locate the method. If the
|
||||
method isn't in the hash table then a search is made through the
|
||||
class hierarchy using strcmp to locate the method. */
|
||||
typedef void *SEL;
|
||||
/* For functions which return Method_t */
|
||||
#define METHOD_NULL (Method_t)0
|
||||
|
||||
/* ObjC uses this typedef for untyped instances. */
|
||||
|
||||
|
||||
/*
|
||||
** Definition of a selector. Selectors are really of type unsigned int.
|
||||
** The runtime does this mapping from SEL's to names internally in the
|
||||
** sel_... operations. You should never use the fact that it is actually
|
||||
** an integer, since other Objective-C implementations use other conventions.
|
||||
*/
|
||||
typedef void* SEL;
|
||||
|
||||
/*
|
||||
** ObjC uses this typedef for untyped instances.
|
||||
*/
|
||||
typedef struct objc_object {
|
||||
struct objc_class* class_pointer;
|
||||
} *id;
|
||||
|
||||
/* Prototype for method functions. */
|
||||
typedef id (*IMP)(id, SEL, ...);
|
||||
|
||||
|
||||
/*
|
||||
** Method descriptor returned by introspective Object methods.
|
||||
** This is really just the first part of the more complete objc_method
|
||||
** structure defined below and used internally by the runtime.
|
||||
*/
|
||||
struct objc_method_description
|
||||
{
|
||||
SEL name; /* this is a selector, not a string */
|
||||
char *types; /* type encoding */
|
||||
};
|
||||
|
||||
|
||||
|
||||
/* Filer types used to describe Ivars and Methods. */
|
||||
#define _C_ID '@'
|
||||
#define _C_CLASS '#'
|
||||
|
@ -82,6 +111,7 @@ typedef id (*IMP)(id, SEL, ...);
|
|||
#define _C_UNDEF '?'
|
||||
#define _C_PTR '^'
|
||||
#define _C_CHARPTR '*'
|
||||
#define _C_ATOM '%'
|
||||
#define _C_ARY_B '['
|
||||
#define _C_ARY_E ']'
|
||||
#define _C_UNION_B '('
|
||||
|
@ -89,33 +119,23 @@ typedef id (*IMP)(id, SEL, ...);
|
|||
#define _C_STRUCT_B '{'
|
||||
#define _C_STRUCT_E '}'
|
||||
|
||||
/* These definitions are masks used with the "info" member variable in
|
||||
the lass and meta class structures. */
|
||||
#define CLS_CLASS 0x1L /* The structure is of type
|
||||
class (Class_t). */
|
||||
#define CLS_META 0x2L /* The structure is of type
|
||||
meta class (MetaClass_t). */
|
||||
#define CLS_INITIALIZED 0x4L /* Class is initialized. A
|
||||
+initialize method is the
|
||||
first message sent to a
|
||||
class. It isn't guaranteed
|
||||
to be sent only once. */
|
||||
#define CLS_RTI 0x8L /* The class has been initialized
|
||||
within the run time library. */
|
||||
|
||||
/* Set this variable nonzero to print a line describing each
|
||||
message that is sent. */
|
||||
|
||||
/*
|
||||
** Set this variable nonzero to print a line describing each
|
||||
** message that is sent.
|
||||
*/
|
||||
extern BOOL objc_trace;
|
||||
|
||||
|
||||
/*
|
||||
* Whereas a Module (defined further down) is the root (typically) of a file,
|
||||
* a Symtab is the root of the class and category definitions within the
|
||||
* module.
|
||||
*
|
||||
* A Symtab contains a variable length array of pointers to classes and
|
||||
* categories defined in the module.
|
||||
*/
|
||||
** Whereas a Module (defined further down) is the root (typically) of a file,
|
||||
** a Symtab is the root of the class and category definitions within the
|
||||
** module.
|
||||
**
|
||||
** A Symtab contains a variable length array of pointers to classes and
|
||||
** categories defined in the module.
|
||||
*/
|
||||
typedef struct objc_symtab {
|
||||
unsigned long sel_ref_cnt; /* Unknown. */
|
||||
SEL *refs; /* Unknown. */
|
||||
|
@ -132,14 +152,14 @@ typedef struct objc_symtab {
|
|||
|
||||
|
||||
/*
|
||||
* The compiler generates one of these structures for each module that
|
||||
* composes the executable (eg main.m).
|
||||
*
|
||||
* This data structure is the root of the definition tree for the module.
|
||||
*
|
||||
* A collect program runs between ld stages and creates a ObjC ctor array.
|
||||
* That array holds a pointer to each module structure of the executable.
|
||||
*/
|
||||
** The compiler generates one of these structures for each module that
|
||||
** composes the executable (eg main.m).
|
||||
**
|
||||
** This data structure is the root of the definition tree for the module.
|
||||
**
|
||||
** A collect program runs between ld stages and creates a ObjC ctor array.
|
||||
** That array holds a pointer to each module structure of the executable.
|
||||
*/
|
||||
typedef struct objc_module {
|
||||
unsigned long version; /* Compiler revision. */
|
||||
unsigned long size; /* sizeof(Module). */
|
||||
|
@ -155,9 +175,9 @@ typedef struct objc_module {
|
|||
|
||||
|
||||
/*
|
||||
* The compiler generates one of these structures for a class that has
|
||||
* instance variables defined in its specification.
|
||||
*/
|
||||
** The compiler generates one of these structures for a class that has
|
||||
** instance variables defined in its specification.
|
||||
*/
|
||||
typedef struct objc_ivar* Ivar_t;
|
||||
typedef struct objc_ivar_list {
|
||||
int ivar_count; /* Number of structures (Ivar)
|
||||
|
@ -182,13 +202,13 @@ typedef struct objc_ivar_list {
|
|||
|
||||
|
||||
/*
|
||||
* The compiler generates one (or more) of these structures for a class that
|
||||
* has methods defined in its specification.
|
||||
*
|
||||
* The implementation of a class can be broken into separate pieces in a file
|
||||
* and categories can break them across modules. To handle this problem is a
|
||||
* singly linked list of methods.
|
||||
*/
|
||||
** The compiler generates one (or more) of these structures for a class that
|
||||
** has methods defined in its specification.
|
||||
**
|
||||
** The implementation of a class can be broken into separate pieces in a file
|
||||
** and categories can break them across modules. To handle this problem is a
|
||||
** singly linked list of methods.
|
||||
*/
|
||||
typedef struct objc_method Method;
|
||||
typedef Method* Method_t;
|
||||
typedef struct objc_method_list {
|
||||
|
@ -201,7 +221,7 @@ typedef struct objc_method_list {
|
|||
SEL method_name; /* This variable is the method's
|
||||
name. It is a char*.
|
||||
The unique integer passed to
|
||||
objc_msgSend is a char* too.
|
||||
objc_msg_send is a char* too.
|
||||
It is compared against
|
||||
method_name using strcmp. */
|
||||
const char* method_types; /* Description of the method's
|
||||
|
@ -214,47 +234,52 @@ typedef struct objc_method_list {
|
|||
} MethodList, *MethodList_t;
|
||||
|
||||
|
||||
/*
|
||||
* The compiler generates one of these structures for each class.
|
||||
*
|
||||
* This structure is the definition for meta classes. By definition a meta
|
||||
* class is the class's class. Its most relevant contribution is that its
|
||||
* method list contain the class's factory methods.
|
||||
*
|
||||
* This structure is generated by the compiler in the executable and used by
|
||||
* the run-time during normal messaging operations. Therefore some members
|
||||
* change type. The compiler generates "char* const" and places a string in
|
||||
* the following member variables: class_pointer and super_class.
|
||||
*/
|
||||
typedef struct objc_metaClass {
|
||||
struct objc_metaClass* class_pointer; /* Pointer to Object meta class. */
|
||||
struct objc_metaClass* super_class; /* Pointer to meta class's
|
||||
super class. NULL for
|
||||
Object. */
|
||||
const char* name; /* Name of the meta class. */
|
||||
long version; /* Unknown. */
|
||||
long info; /* Bit mask. See class masks
|
||||
defined above. */
|
||||
long instance_size; /* Always 0 except for Object.
|
||||
Should be ignored. */
|
||||
IvarList_t ivars; /* Always NULL except for
|
||||
Object. Should be ignored. */
|
||||
MethodList_t methods; /* Linked List of factory methods
|
||||
for the class. */
|
||||
struct record ** cache; /* Pointer to factory method dispatch table. */
|
||||
} MetaClass, *MetaClass_t;
|
||||
#include <objc/sarray.h>
|
||||
|
||||
#ifdef OBJC_HASH_LOOKUP
|
||||
|
||||
/*
|
||||
* The compiler generates one of these structures for each class.
|
||||
*
|
||||
* This structure is the definition for classes.
|
||||
*
|
||||
* This structure is generated by the compiler in the executable and used by
|
||||
* the run-time during normal messaging operations. Therefore some members
|
||||
* change type. The compiler generates "char* const" and places a string in
|
||||
* the following member variables: super_class.
|
||||
*/
|
||||
** This data structure is used for the hash lookup mechanism. When
|
||||
** enabled, the runtime keeps a such cache of buckets for each class.
|
||||
*/
|
||||
typedef struct objc_cache* Cache_t;
|
||||
typedef struct objc_bucket* Bucket_t;
|
||||
typedef struct objc_bucket Bucket;
|
||||
struct objc_cache {
|
||||
unsigned int mask; /* total = mask+1 */
|
||||
unsigned int occupied;
|
||||
struct objc_bucket {
|
||||
SEL method_selector;
|
||||
IMP method_imp;
|
||||
} buckets[1];
|
||||
} Cache;
|
||||
|
||||
#endif
|
||||
|
||||
/*
|
||||
** The compiler generates one of these structures for each class.
|
||||
**
|
||||
** This structure is the definition for meta classes. By definition a meta
|
||||
** class is the class's class. Its most relevant contribution is that its
|
||||
** method list contain the class's factory methods.
|
||||
**
|
||||
** This structure is generated by the compiler in the executable and used by
|
||||
** the run-time during normal messaging operations. Therefore some members
|
||||
** change type. The compiler generates "char* const" and places a string in
|
||||
** the following member variables: class_pointer and super_class.
|
||||
*/
|
||||
typedef struct objc_class *MetaClass_t;
|
||||
|
||||
/*
|
||||
** The compiler generates one of these structures for each class.
|
||||
**
|
||||
** This structure is the definition for classes.
|
||||
**
|
||||
** This structure is generated by the compiler in the executable and used by
|
||||
** the run-time during normal messaging operations. Therefore some members
|
||||
** change type. The compiler generates "char* const" and places a string in
|
||||
** the following member variables: super_class.
|
||||
*/
|
||||
typedef struct objc_class {
|
||||
MetaClass_t class_pointer; /* Pointer to the class's
|
||||
meta class. */
|
||||
|
@ -279,14 +304,91 @@ typedef struct objc_class {
|
|||
MethodList_t methods; /* Linked list of instance
|
||||
methods defined for the
|
||||
class. */
|
||||
struct record ** cache; /* Pointer to instance method dispatch table. */
|
||||
} Class, *Class_t;
|
||||
#ifdef OBJC_HASH_LOOKUP
|
||||
Cache_t cache; /* Pointer to method cache */
|
||||
#else
|
||||
struct sarray * dtable; /* Pointer to instance
|
||||
method dispatch table. */
|
||||
#endif
|
||||
|
||||
struct objc_class* subclass_list; /* Subclasses */
|
||||
struct objc_class* sibling_class;
|
||||
|
||||
struct objc_protocol_list *protocols; /* Protocols conformed to */
|
||||
|
||||
} Class, *Class_t, MetaClass;
|
||||
|
||||
/* Protocol support */
|
||||
|
||||
#ifndef __OBJC__
|
||||
typedef struct objc_protocol {
|
||||
char *protocol_name;
|
||||
struct objc_protocol_list *protocol_list;
|
||||
struct objc_method_description_list *instance_methods, *class_methods;
|
||||
} Protocol;
|
||||
|
||||
#else
|
||||
|
||||
@class Protocol;
|
||||
#endif
|
||||
|
||||
struct objc_protocol_list {
|
||||
struct objc_protocol_list *next;
|
||||
int count;
|
||||
Protocol *list[1];
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
* The compiler generates one of these structures for each category. A class
|
||||
* may have many categories and contain both instance and factory methods.
|
||||
*/
|
||||
** This is used to assure consistent access to the info field of
|
||||
** classes
|
||||
*/
|
||||
#ifndef HOST_BITS_PER_LONG
|
||||
#define HOST_BITS_PER_LONG (sizeof(long)*8)
|
||||
#endif
|
||||
|
||||
#define __CLS_INFO(cls) ((cls)->info)
|
||||
#define __CLS_ISINFO(cls, mask) ((__CLS_INFO(cls)&mask)==mask)
|
||||
#define __CLS_SETINFO(cls, mask) (__CLS_INFO(cls) |= mask)
|
||||
|
||||
/* The structure is of type MetaClass_t */
|
||||
#define _CLS_META 0x2L
|
||||
#define CLS_ISMETA(cls) ((cls)&&__CLS_ISINFO(cls, _CLS_META))
|
||||
|
||||
|
||||
/* The structure is of type Class_t */
|
||||
#define _CLS_CLASS 0x1L
|
||||
#define CLS_ISCLASS(cls) ((cls)&&__CLS_ISINFO(cls, _CLS_CLASS))
|
||||
|
||||
/*
|
||||
** The class is initialized within the runtime. This means that
|
||||
** it has had correct super and sublinks assigned
|
||||
*/
|
||||
#define _CLS_RESOLV 0x8L
|
||||
#define CLS_ISRESOLV(cls) __CLS_ISINFO(cls, _CLS_RESOLV)
|
||||
#define CLS_SETRESOLV(cls) __CLS_SETINFO(cls, _CLS_RESOLV)
|
||||
|
||||
/*
|
||||
** The class has been send a +initialize message or a such is not
|
||||
** defined for this class
|
||||
*/
|
||||
#define _CLS_INITIALIZED 0x04L
|
||||
#define CLS_ISINITIALIZED(cls) __CLS_ISINFO(cls, _CLS_INITIALIZED)
|
||||
#define CLS_SETINITIALIZED(cls) __CLS_SETINFO(cls, _CLS_INITIALIZED)
|
||||
|
||||
/*
|
||||
** The class number of this class. This must be the same for both the
|
||||
** class and it's meta class object
|
||||
*/
|
||||
#define CLS_GETNUMBER(cls) (__CLS_INFO(cls) >> (HOST_BITS_PER_LONG/2))
|
||||
#define CLS_SETNUMBER(cls, num) \
|
||||
({ assert(CLS_GETNUMBER(cls)==0); \
|
||||
__CLS_SETINFO(cls, ((num) << (HOST_BITS_PER_LONG/2))); })
|
||||
|
||||
/*
|
||||
** The compiler generates one of these structures for each category. A class
|
||||
** may have many categories and contain both instance and factory methods.
|
||||
*/
|
||||
typedef struct objc_category {
|
||||
const char* category_name; /* Name of the category. Name
|
||||
contained in the () of the
|
||||
|
@ -301,52 +403,92 @@ typedef struct objc_category {
|
|||
methods defined in the
|
||||
category. NULL indicates no
|
||||
class methods defined. */
|
||||
struct objc_protocol_list *protocols; /* List of Protocols
|
||||
conformed to */
|
||||
} Category, *Category_t;
|
||||
|
||||
/*
|
||||
** Well...
|
||||
*/
|
||||
|
||||
typedef struct objc_typed_stream TypedStream;
|
||||
|
||||
|
||||
/*
|
||||
* Structure used when a message is send to a class's super class. The
|
||||
* compiler generates one of these structures and passes it to
|
||||
* objc_msgSuper.
|
||||
*/
|
||||
** Structure used when a message is send to a class's super class. The
|
||||
** compiler generates one of these structures and passes it to
|
||||
** objc_msg_super.
|
||||
*/
|
||||
typedef struct objc_super {
|
||||
id receiver; /* Id of the object sending
|
||||
id self; /* Id of the object sending
|
||||
the message. */
|
||||
Class_t class; /* Object's super class. */
|
||||
} Super, *Super_t;
|
||||
|
||||
/*
|
||||
* _objc_alloc points to the function, called through class_createInstance,
|
||||
* used to allocate memory for new instances.
|
||||
*/
|
||||
extern id (*_objc_alloc)(Class_t);
|
||||
/*
|
||||
* _objc_dealloc points to the function, called through object_dispose, used to
|
||||
* free instances.
|
||||
*/
|
||||
extern id (*_objc_dealloc)(id);
|
||||
/*
|
||||
* _objc_realloc points to the function, called through object_realloc, used to
|
||||
* reallocate memory for an object
|
||||
*/
|
||||
extern id (*_objc_realloc)(id, unsigned int);
|
||||
IMP objc_msg_lookup_super(Super_t super, SEL sel);
|
||||
|
||||
/*
|
||||
* _objc_copy points to the function, called through object_copy,
|
||||
* used to create an exact copy of an object.
|
||||
*/
|
||||
extern id (*_objc_copy)(id);
|
||||
typedef void* retval_t; /* return value */
|
||||
typedef void(*apply_t)(void); /* function pointer */
|
||||
|
||||
/*
|
||||
* _objc_error points to the function that the run-time system calls
|
||||
* to handle an error. By default, it prints formatted error messages to the
|
||||
* standard error stream and calls abort to produce a core file.
|
||||
*/
|
||||
extern void (*_objc_error)(id object, const char *fmt, va_list ap);
|
||||
#if defined(REG_ARGS) || defined(STACK_ARGS)
|
||||
|
||||
typedef struct {
|
||||
char* arg_pointer;
|
||||
#ifdef STRUCT_RETURN
|
||||
void* struct_return;
|
||||
#endif
|
||||
#ifdef REG_ARGS
|
||||
void* regs[2];
|
||||
#endif
|
||||
} *arglist_t;
|
||||
|
||||
#ifdef __cplusplus
|
||||
#ifdef REG_ARGS
|
||||
#define __objc_frame_receiver(FRAME) (FRAME)->regs[0]
|
||||
#define __objc_frame_selector(FRAME) ((SEL)(FRAME)->regs[1])
|
||||
|
||||
#else
|
||||
#define __objc_frame_receiver(FRAME) ((id*)(FRAME)->arg_pointer)[0]
|
||||
#define __objc_frame_selector(FRAME) ((SEL*)(FRAME)->arg_pointer)[1]
|
||||
#endif
|
||||
#else
|
||||
|
||||
typedef void* arglist_t;
|
||||
|
||||
#endif
|
||||
|
||||
retval_t objc_msg_sendv(id, SEL, size_t, arglist_t);
|
||||
|
||||
#ifdef __OBJC__
|
||||
|
||||
static id nil_method(id rcv, SEL op, ...) { return rcv; }
|
||||
|
||||
#ifdef OBJC_HASH_LOOKUP
|
||||
|
||||
#include <objc/cache.h>
|
||||
|
||||
extern __inline__ IMP
|
||||
objc_msg_lookup(id receiver, SEL op)
|
||||
{
|
||||
if(receiver)
|
||||
return cache_get(receiver->class_pointer, op);
|
||||
else
|
||||
return nil_method;
|
||||
}
|
||||
|
||||
#else /* not OBJC_HASH_LOOKUP => OBJC_SPARSE_LOOKUP */
|
||||
|
||||
extern __inline__ IMP
|
||||
objc_msg_lookup(id receiver, SEL op)
|
||||
{
|
||||
if(receiver)
|
||||
return sarray_get(receiver->class_pointer->dtable, (unsigned int) op);
|
||||
else
|
||||
return nil_method;
|
||||
}
|
||||
#endif /* not OBJC_HASH_LOOKUP */
|
||||
|
||||
#else
|
||||
IMP objc_msg_lookup(id, SEL);
|
||||
#endif
|
||||
|
||||
|
||||
|
|
Loading…
Reference in New Issue