runtime/objc-block-trampolines.h

   1 /*
   2  * Copyright (c) 2018 Apple Inc.  All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24
  25 #ifndef _OBJC_TRAMPOLINES_H
  26 #define _OBJC_TRAMPOLINES_H
  27
  28 /*
  29  * WARNING  DANGER  HAZARD  BEWARE  EEK
  30  *
  31  * Everything in this file is for Apple Internal use only.
  32  * These will change in arbitrary OS updates and in unpredictable ways.
  33  * When your program breaks, you get to keep both pieces.
  34  */
  35
  36 /*
  37  * objc-block-trampolines.h: Symbols for IMP block trampolines
  38  */
  39
  40 // WARNING: remapped code and dtrace do not play well together. Dtrace
  41 // will place trap instructions to instrument the code, which then get
  42 // remapped along with everything else. The remapped traps are not
  43 // recognized by dtrace and the process crashes. To avoid this, dtrace
  44 // blacklists this library by name. Do not change the name of this
  45 // library. rdar://problem/42627391
  46
  47 #include <objc/objc-api.h>
  48
  49 OBJC_EXPORT const char _objc_blockTrampolineImpl
  50     OBJC_AVAILABLE(10.14, 12.0, 12.0, 5.0, 3.0);
  51
  52 OBJC_EXPORT const char _objc_blockTrampolineStart
  53     OBJC_AVAILABLE(10.14, 12.0, 12.0, 5.0, 3.0);
  54
  55 OBJC_EXPORT const char _objc_blockTrampolineLast
  56     OBJC_AVAILABLE(10.14, 12.0, 12.0, 5.0, 3.0);
  57
  58
  59 OBJC_EXPORT const char _objc_blockTrampolineImpl_stret
  60 OBJC_AVAILABLE(10.14, 12.0, 12.0, 5.0, 3.0)
  61     OBJC_ARM64_UNAVAILABLE;
  62
  63 OBJC_EXPORT const char _objc_blockTrampolineStart_stret
  64 OBJC_AVAILABLE(10.14, 12.0, 12.0, 5.0, 3.0)
  65     OBJC_ARM64_UNAVAILABLE;
  66
  67 OBJC_EXPORT const char _objc_blockTrampolineLast_stret
  68 OBJC_AVAILABLE(10.14, 12.0, 12.0, 5.0, 3.0)
  69     OBJC_ARM64_UNAVAILABLE;
  70
  71 #endif