mirror of
https://github.com/darlinghq/darling-objc4.git
synced 2024-11-23 04:09:46 +00:00
285 lines
9.5 KiB
C
285 lines
9.5 KiB
C
/*
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* Copyright (c) 1999-2002, 2005-2008 Apple Inc. All Rights Reserved.
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*/
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#ifndef _OBJC_CONFIG_H_
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#define _OBJC_CONFIG_H_
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#include <TargetConditionals.h>
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// Avoid the !NDEBUG double negative.
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#if !NDEBUG
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# define DEBUG 1
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#else
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# define DEBUG 0
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#endif
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// Define SUPPORT_GC_COMPAT=1 to enable compatibility where GC once was.
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// OBJC_NO_GC and OBJC_NO_GC_API in objc-api.h mean something else.
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#if !TARGET_OS_OSX
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# define SUPPORT_GC_COMPAT 0
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#else
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# define SUPPORT_GC_COMPAT 1
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#endif
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// Define SUPPORT_ZONES=1 to enable malloc zone support in NXHashTable.
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#if !(TARGET_OS_OSX || TARGET_OS_MACCATALYST)
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# define SUPPORT_ZONES 0
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#else
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# define SUPPORT_ZONES 1
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#endif
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// Define SUPPORT_MOD=1 to use the mod operator in NXHashTable and objc-sel-set
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#if defined(__arm__)
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# define SUPPORT_MOD 0
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#else
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# define SUPPORT_MOD 1
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#endif
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// Define SUPPORT_PREOPT=1 to enable dyld shared cache optimizations
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#if TARGET_OS_WIN32
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# define SUPPORT_PREOPT 0
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#else
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# define SUPPORT_PREOPT 1
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#endif
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// Define SUPPORT_TAGGED_POINTERS=1 to enable tagged pointer objects
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// Be sure to edit tagged pointer SPI in objc-internal.h as well.
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#if !__LP64__
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# define SUPPORT_TAGGED_POINTERS 0
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#else
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# define SUPPORT_TAGGED_POINTERS 1
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#endif
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// Define SUPPORT_MSB_TAGGED_POINTERS to use the MSB
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// as the tagged pointer marker instead of the LSB.
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// Be sure to edit tagged pointer SPI in objc-internal.h as well.
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#if !SUPPORT_TAGGED_POINTERS || ((TARGET_OS_OSX || TARGET_OS_MACCATALYST) && __x86_64__)
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# define SUPPORT_MSB_TAGGED_POINTERS 0
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#else
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# define SUPPORT_MSB_TAGGED_POINTERS 1
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#endif
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// Define SUPPORT_INDEXED_ISA=1 on platforms that store the class in the isa
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// field as an index into a class table.
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// Note, keep this in sync with any .s files which also define it.
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// Be sure to edit objc-abi.h as well.
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#if __ARM_ARCH_7K__ >= 2 || (__arm64__ && !__LP64__)
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# define SUPPORT_INDEXED_ISA 1
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#else
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# define SUPPORT_INDEXED_ISA 0
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#endif
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// Define SUPPORT_PACKED_ISA=1 on platforms that store the class in the isa
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// field as a maskable pointer with other data around it.
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#if (!__LP64__ || TARGET_OS_WIN32 || \
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(TARGET_OS_SIMULATOR && !TARGET_OS_MACCATALYST && !__arm64__))
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# define SUPPORT_PACKED_ISA 0
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#else
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# define SUPPORT_PACKED_ISA 1
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#endif
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// Define SUPPORT_NONPOINTER_ISA=1 on any platform that may store something
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// in the isa field that is not a raw pointer.
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#if !SUPPORT_INDEXED_ISA && !SUPPORT_PACKED_ISA
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# define SUPPORT_NONPOINTER_ISA 0
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#else
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# define SUPPORT_NONPOINTER_ISA 1
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#endif
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// Define SUPPORT_FIXUP=1 to repair calls sites for fixup dispatch.
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// Fixup messaging itself is no longer supported.
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// Be sure to edit objc-abi.h as well (objc_msgSend*_fixup)
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#if !(defined(__x86_64__) && (TARGET_OS_OSX || TARGET_OS_SIMULATOR))
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# define SUPPORT_FIXUP 0
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#else
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# define SUPPORT_FIXUP 1
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#endif
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// Define SUPPORT_ZEROCOST_EXCEPTIONS to use "zero-cost" exceptions for OBJC2.
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// Be sure to edit objc-exception.h as well (objc_add/removeExceptionHandler)
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#if defined(__arm__) && __USING_SJLJ_EXCEPTIONS__
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# define SUPPORT_ZEROCOST_EXCEPTIONS 0
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#else
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# define SUPPORT_ZEROCOST_EXCEPTIONS 1
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#endif
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// Define SUPPORT_ALT_HANDLERS if you're using zero-cost exceptions
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// but also need to support AppKit's alt-handler scheme
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// Be sure to edit objc-exception.h as well (objc_add/removeExceptionHandler)
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#if !SUPPORT_ZEROCOST_EXCEPTIONS || !TARGET_OS_OSX
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# define SUPPORT_ALT_HANDLERS 0
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#else
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# define SUPPORT_ALT_HANDLERS 1
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#endif
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// Define SUPPORT_RETURN_AUTORELEASE to optimize autoreleased return values
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#if TARGET_OS_WIN32
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# define SUPPORT_RETURN_AUTORELEASE 0
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#else
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# define SUPPORT_RETURN_AUTORELEASE 1
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#endif
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// Define SUPPORT_STRET on architectures that need separate struct-return ABI.
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#if defined(__arm64__)
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# define SUPPORT_STRET 0
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#else
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# define SUPPORT_STRET 1
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#endif
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// Define SUPPORT_MESSAGE_LOGGING to enable NSObjCMessageLoggingEnabled
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#if !TARGET_OS_OSX
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# define SUPPORT_MESSAGE_LOGGING 0
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#else
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# define SUPPORT_MESSAGE_LOGGING 1
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#endif
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// Define SUPPORT_AUTORELEASEPOOL_DEDDUP_PTRS to combine consecutive pointers to the same object in autorelease pools
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#if !__LP64__
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# define SUPPORT_AUTORELEASEPOOL_DEDUP_PTRS 0
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#else
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# define SUPPORT_AUTORELEASEPOOL_DEDUP_PTRS 1
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#endif
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// Define HAVE_TASK_RESTARTABLE_RANGES to enable usage of
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// task_restartable_ranges_synchronize()
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#if TARGET_OS_SIMULATOR || defined(__i386__) || defined(__arm__) || !TARGET_OS_MAC || defined(DARLING)
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# define HAVE_TASK_RESTARTABLE_RANGES 0
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#else
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# define HAVE_TASK_RESTARTABLE_RANGES 1
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#endif
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// OBJC_INSTRUMENTED controls whether message dispatching is dynamically
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// monitored. Monitoring introduces substantial overhead.
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// NOTE: To define this condition, do so in the build command, NOT by
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// uncommenting the line here. This is because objc-class.h heeds this
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// condition, but objc-class.h can not #include this file (objc-config.h)
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// because objc-class.h is public and objc-config.h is not.
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//#define OBJC_INSTRUMENTED
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// The runtimeLock is a mutex always held hence the cache lock is
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// redundant and can be elided.
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//
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// If the runtime lock ever becomes a rwlock again,
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// the cache lock would need to be used again
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#ifndef DARLING
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#define CONFIG_USE_CACHE_LOCK 0
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#else
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#if __OBJC2__
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#define CONFIG_USE_CACHE_LOCK 0
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#else
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#define CONFIG_USE_CACHE_LOCK 1
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#endif
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#endif
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// Determine how the method cache stores IMPs.
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#define CACHE_IMP_ENCODING_NONE 1 // Method cache contains raw IMP.
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#define CACHE_IMP_ENCODING_ISA_XOR 2 // Method cache contains ISA ^ IMP.
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#define CACHE_IMP_ENCODING_PTRAUTH 3 // Method cache contains ptrauth'd IMP.
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#if __PTRAUTH_INTRINSICS__
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// Always use ptrauth when it's supported.
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#define CACHE_IMP_ENCODING CACHE_IMP_ENCODING_PTRAUTH
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#elif defined(__arm__)
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// 32-bit ARM uses no encoding.
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#define CACHE_IMP_ENCODING CACHE_IMP_ENCODING_NONE
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#else
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// Everything else uses ISA ^ IMP.
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#define CACHE_IMP_ENCODING CACHE_IMP_ENCODING_ISA_XOR
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#endif
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#define CACHE_MASK_STORAGE_OUTLINED 1
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#define CACHE_MASK_STORAGE_HIGH_16 2
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#define CACHE_MASK_STORAGE_LOW_4 3
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#define CACHE_MASK_STORAGE_HIGH_16_BIG_ADDRS 4
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#if defined(__arm64__) && __LP64__
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#if TARGET_OS_OSX || TARGET_OS_SIMULATOR
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#define CACHE_MASK_STORAGE CACHE_MASK_STORAGE_HIGH_16_BIG_ADDRS
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#else
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#define CACHE_MASK_STORAGE CACHE_MASK_STORAGE_HIGH_16
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#endif
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#elif defined(__arm64__) && !__LP64__
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#define CACHE_MASK_STORAGE CACHE_MASK_STORAGE_LOW_4
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#else
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#define CACHE_MASK_STORAGE CACHE_MASK_STORAGE_OUTLINED
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#endif
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// Constants used for signing/authing isas. This doesn't quite belong
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// here, but the asm files can't import other headers.
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#define ISA_SIGNING_DISCRIMINATOR 0x6AE1
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#define ISA_SIGNING_DISCRIMINATOR_CLASS_SUPERCLASS 0xB5AB
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#define ISA_SIGNING_KEY ptrauth_key_process_independent_data
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// ISA signing authentication modes. Set ISA_SIGNING_AUTH_MODE to one
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// of these to choose how ISAs are authenticated.
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#define ISA_SIGNING_STRIP 1 // Strip the signature whenever reading an ISA.
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#define ISA_SIGNING_AUTH 2 // Authenticate the signature on all ISAs.
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// ISA signing modes. Set ISA_SIGNING_SIGN_MODE to one of these to
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// choose how ISAs are signed.
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#define ISA_SIGNING_SIGN_NONE 1 // Sign no ISAs.
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#define ISA_SIGNING_SIGN_ONLY_SWIFT 2 // Only sign ISAs of Swift objects.
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#define ISA_SIGNING_SIGN_ALL 3 // Sign all ISAs.
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#if __has_feature(ptrauth_objc_isa_strips) || __has_feature(ptrauth_objc_isa_signs) || __has_feature(ptrauth_objc_isa_authenticates)
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# if __has_feature(ptrauth_objc_isa_authenticates)
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# define ISA_SIGNING_AUTH_MODE ISA_SIGNING_AUTH
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# else
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# define ISA_SIGNING_AUTH_MODE ISA_SIGNING_STRIP
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# endif
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# if __has_feature(ptrauth_objc_isa_signs)
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# define ISA_SIGNING_SIGN_MODE ISA_SIGNING_SIGN_ALL
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# else
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# define ISA_SIGNING_SIGN_MODE ISA_SIGNING_SIGN_NONE
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# endif
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#else
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# if __has_feature(ptrauth_objc_isa)
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# define ISA_SIGNING_AUTH_MODE ISA_SIGNING_AUTH
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# define ISA_SIGNING_SIGN_MODE ISA_SIGNING_SIGN_ALL
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# else
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# define ISA_SIGNING_AUTH_MODE ISA_SIGNING_STRIP
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# define ISA_SIGNING_SIGN_MODE ISA_SIGNING_SIGN_NONE
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# endif
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#endif
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// When set, an unsigned superclass pointer is treated as Nil, which
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// will treat the class as if its superclass was weakly linked and
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// not loaded, and cause uses of the class to resolve to Nil.
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#define SUPERCLASS_SIGNING_TREAT_UNSIGNED_AS_NIL 0
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#if defined(__arm64__) && TARGET_OS_IOS && !TARGET_OS_SIMULATOR && !TARGET_OS_MACCATALYST
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#define CONFIG_USE_PREOPT_CACHES 1
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#else
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#define CONFIG_USE_PREOPT_CACHES 0
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#endif
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// When set to 1, small methods in the shared cache have a direct
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// offset to a selector. When set to 0, small methods in the shared
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// cache have the same format as other small methods, with an offset
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// to a selref.
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#define CONFIG_SHARED_CACHE_RELATIVE_DIRECT_SELECTORS 1
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#endif
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