Initial check-in of gcc 4.7.2.

Change-Id: I4a2f5a921c21741a0e18bda986d77e5f1bef0365

1 files changed, 152 insertions, 0 deletions

diff --git a/gcc-4.7/libobjc/objc/objc.h b/gcc-4.7/libobjc/objc/objc.h
new file mode 100644
index 000000000..1fa43737e
--- /dev/null
+++ b/gcc-4.7/libobjc/objc/objc.h
@@ -0,0 +1,152 @@
+/* Basic data types for Objective C.
+   Copyright (C) 1993, 1995, 1996, 2004, 2009, 
+   2010 Free Software Foundation, Inc.
+
+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
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef __objc_INCLUDE_GNU
+#define __objc_INCLUDE_GNU
+
+/* This file contains the definition of the basic types used by the
+   Objective-C language.  It needs to be included to do almost
+   anything with Objective-C.  */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stddef.h>
+
+/* The current version of the GNU Objective-C Runtime library in
+   compressed ISO date format.  This should be updated any time a new
+   version is released with changes to the public API (there is no
+   need to update it if there were no API changes since the previous
+   release).  This macro is only defined starting with the GNU
+   Objective-C Runtime shipped with GCC 4.6.0.  If it is not defined,
+   it is either an older version of the runtime, or another runtime.  */
+#define __GNU_LIBOBJC__ 20110608
+
+/* Definition of the boolean type.
+
+   Compatibility note: the Apple/NeXT runtime defines a BOOL as a
+   'signed char'.  The GNU runtime uses an 'unsigned char'.
+
+   Important: this could change and we could switch to 'typedef bool
+   BOOL' in the future.  Do not depend on the type of BOOL.  */
+#undef BOOL
+typedef unsigned char  BOOL;
+
+#define YES   (BOOL)1
+#define NO    (BOOL)0
+
+/* The basic Objective-C types (SEL, Class, id) are defined as pointer
+   to opaque structures.  The details of the structures are private to
+   the runtime and may potentially change from one version to the
+   other.  */
+
+/* A SEL (selector) represents an abstract method (in the
+   object-oriented sense) and includes all the details of how to
+   invoke the method (which means its name, arguments and return
+   types) but provides no implementation of its own.  You can check
+   whether a class implements a selector or not, and if you have a
+   selector and know that the class implements it, you can use it to
+   call the method for an object in the class.  */
+typedef const struct objc_selector *SEL;
+
+/* A Class is a class (in the object-oriented sense).  In Objective-C
+   there is the complication that each Class is an object itself, and
+   so belongs to a class too.  This class that a class belongs to is
+   called its 'meta class'.  */
+typedef struct objc_class *Class;
+
+/* An 'id' is an object of an unknown class.  The way the object data
+   is stored inside the object is private and what you see here is
+   only the beginning of the actual struct.  The first field is always
+   a pointer to the Class that the object belongs to.  */
+typedef struct objc_object
+{
+  /* 'class_pointer' is the Class that the object belongs to.  In case
+     of a Class object, this pointer points to the meta class.
+
+     Compatibility Note: The Apple/NeXT runtime calls this field
+     'isa'.  To access this field, use object_getClass() from
+     runtime.h, which is an inline function so does not add any
+     overhead and is also portable to other runtimes.  */
+  Class class_pointer;
+} *id;
+
+/* 'IMP' is a C function that implements a method.  When retrieving
+   the implementation of a method from the runtime, this is the type
+   of the pointer returned.  The idea of the definition of IMP is to
+   represent a 'pointer to a general function taking an id, a SEL,
+   followed by other unspecified arguments'.  You must always cast an
+   IMP to a pointer to a function taking the appropriate, specific
+   types for that function, before calling it - to make sure the
+   appropriate arguments are passed to it.  The code generated by the
+   compiler to perform method calls automatically does this cast
+   inside method calls.  */
+typedef id (*IMP)(id, SEL, ...); 
+
+/* 'nil' is the null object.  Messages to nil do nothing and always
+   return 0.  */
+#define nil (id)0
+
+/* 'Nil' is the null class.  Since classes are objects too, this is
+   actually the same object as 'nil' (and behaves in the same way),
+   but it has a type of Class, so it is good to use it instead of
+   'nil' if you are comparing a Class object to nil as it enables the
+   compiler to do some type-checking.  */
+#define Nil (Class)0
+
+/* TODO: Move the 'Protocol' declaration into objc/runtime.h.  A
+   Protocol is simply an object, not a basic Objective-C type.  The
+   Apple runtime defines Protocol in objc/runtime.h too, so it's good
+   to move it there for API compatibility.  */
+
+/* A 'Protocol' is a formally defined list of selectors (normally
+   created using the @protocol Objective-C syntax).  It is mostly used
+   at compile-time to check that classes implement all the methods
+   that they are supposed to.  Protocols are also available in the
+   runtime system as Protocol objects.  */
+#ifndef __OBJC__
+  /* Once we stop including the deprecated struct_objc_protocol.h
+     there is no reason to even define a 'struct objc_protocol'.  As
+     all the structure details will be hidden, a Protocol basically is
+     simply an object (as it should be).  */
+  typedef struct objc_object Protocol;
+#else /* __OBJC__ */
+  @class Protocol;
+#endif 
+
+/* Compatibility note: the Apple/NeXT runtime defines sel_getName(),
+   sel_registerName(), object_getClassName(), object_getIndexedIvars()
+   in this file while the GNU runtime defines them in runtime.h.
+
+   The reason the GNU runtime does not define them here is that they
+   are not basic Objective-C types (defined in this file), but are
+   part of the runtime API (defined in runtime.h).  */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* not __objc_INCLUDE_GNU */