xref: /xnu-8020.101.4/libkern/libclosure/libclosuredata.c (revision e7776783b89a353188416a9a346c6cdb4928faad)
1*e7776783SApple OSS Distributions /*
2*e7776783SApple OSS Distributions  * data.c
3*e7776783SApple OSS Distributions  * libclosure
4*e7776783SApple OSS Distributions  *
5*e7776783SApple OSS Distributions  * Copyright (c) 2008-2010 Apple Inc. All rights reserved.
6*e7776783SApple OSS Distributions  *
7*e7776783SApple OSS Distributions  * @APPLE_LLVM_LICENSE_HEADER@
8*e7776783SApple OSS Distributions  *
9*e7776783SApple OSS Distributions  */
10*e7776783SApple OSS Distributions 
11*e7776783SApple OSS Distributions /********************
12*e7776783SApple OSS Distributions  *  NSBlock support
13*e7776783SApple OSS Distributions  *
14*e7776783SApple OSS Distributions  *  We allocate space and export a symbol to be used as the Class for the on-stack and malloc'ed copies until ObjC arrives on the scene.  These data areas are set up by Foundation to link in as real classes post facto.
15*e7776783SApple OSS Distributions  *
16*e7776783SApple OSS Distributions  *  We keep these in a separate file so that we can include the runtime code in test subprojects but not include the data so that compiled code that sees the data in libSystem doesn't get confused by a second copy.  Somehow these don't get unified in a common block.
17*e7776783SApple OSS Distributions  **********************/
18*e7776783SApple OSS Distributions 
19*e7776783SApple OSS Distributions void * _NSConcreteStackBlock[32] = { 0 };
20*e7776783SApple OSS Distributions void * _NSConcreteMallocBlock[32] = { 0 };
21*e7776783SApple OSS Distributions void * _NSConcreteAutoBlock[32] = { 0 };
22*e7776783SApple OSS Distributions void * _NSConcreteFinalizingBlock[32] = { 0 };
23*e7776783SApple OSS Distributions void * _NSConcreteGlobalBlock[32] = { 0 };
24*e7776783SApple OSS Distributions void * _NSConcreteWeakBlockVariable[32] = { 0 };
25