mirror of
https://github.com/darlinghq/darling-objc4.git
synced 2024-11-30 07:30:46 +00:00
221 lines
7.0 KiB
C
221 lines
7.0 KiB
C
/*
|
|
* Copyright (c) 1999-2002, 2005-2008 Apple Inc. All Rights Reserved.
|
|
*
|
|
* @APPLE_LICENSE_HEADER_START@
|
|
*
|
|
* This file contains Original Code and/or Modifications of Original Code
|
|
* as defined in and that are subject to the Apple Public Source License
|
|
* Version 2.0 (the 'License'). You may not use this file except in
|
|
* compliance with the License. Please obtain a copy of the License at
|
|
* http://www.opensource.apple.com/apsl/ and read it before using this
|
|
* file.
|
|
*
|
|
* The Original Code and all software distributed under the License are
|
|
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
|
|
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
|
|
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
|
|
* Please see the License for the specific language governing rights and
|
|
* limitations under the License.
|
|
*
|
|
* @APPLE_LICENSE_HEADER_END@
|
|
*/
|
|
|
|
#ifndef _OBJC_CONFIG_H_
|
|
#define _OBJC_CONFIG_H_
|
|
|
|
#include <TargetConditionals.h>
|
|
|
|
// Define __OBJC2__ for the benefit of our asm files.
|
|
#ifndef __OBJC2__
|
|
# if TARGET_OS_OSX && !TARGET_OS_IOSMAC && __i386__
|
|
// old ABI
|
|
# else
|
|
# define __OBJC2__ 1
|
|
# endif
|
|
#endif
|
|
|
|
// Avoid the !NDEBUG double negative.
|
|
#if !NDEBUG
|
|
# define DEBUG 1
|
|
#else
|
|
# define DEBUG 0
|
|
#endif
|
|
|
|
// Define SUPPORT_GC_COMPAT=1 to enable compatibility where GC once was.
|
|
// OBJC_NO_GC and OBJC_NO_GC_API in objc-api.h mean something else.
|
|
#if !TARGET_OS_OSX
|
|
# define SUPPORT_GC_COMPAT 0
|
|
#else
|
|
# define SUPPORT_GC_COMPAT 1
|
|
#endif
|
|
|
|
// Define SUPPORT_ZONES=1 to enable malloc zone support in NXHashTable.
|
|
#if !(TARGET_OS_OSX || TARGET_OS_IOSMAC)
|
|
# define SUPPORT_ZONES 0
|
|
#else
|
|
# define SUPPORT_ZONES 1
|
|
#endif
|
|
|
|
// Define SUPPORT_MOD=1 to use the mod operator in NXHashTable and objc-sel-set
|
|
#if defined(__arm__)
|
|
# define SUPPORT_MOD 0
|
|
#else
|
|
# define SUPPORT_MOD 1
|
|
#endif
|
|
|
|
// Define SUPPORT_PREOPT=1 to enable dyld shared cache optimizations
|
|
#if TARGET_OS_WIN32
|
|
# define SUPPORT_PREOPT 0
|
|
#else
|
|
# define SUPPORT_PREOPT 1
|
|
#endif
|
|
|
|
// Define SUPPORT_TAGGED_POINTERS=1 to enable tagged pointer objects
|
|
// Be sure to edit tagged pointer SPI in objc-internal.h as well.
|
|
#if !(__OBJC2__ && __LP64__)
|
|
# define SUPPORT_TAGGED_POINTERS 0
|
|
#else
|
|
# define SUPPORT_TAGGED_POINTERS 1
|
|
#endif
|
|
|
|
// Define SUPPORT_MSB_TAGGED_POINTERS to use the MSB
|
|
// as the tagged pointer marker instead of the LSB.
|
|
// Be sure to edit tagged pointer SPI in objc-internal.h as well.
|
|
#if !SUPPORT_TAGGED_POINTERS || (TARGET_OS_OSX || TARGET_OS_IOSMAC)
|
|
# define SUPPORT_MSB_TAGGED_POINTERS 0
|
|
#else
|
|
# define SUPPORT_MSB_TAGGED_POINTERS 1
|
|
#endif
|
|
|
|
// Define SUPPORT_INDEXED_ISA=1 on platforms that store the class in the isa
|
|
// field as an index into a class table.
|
|
// Note, keep this in sync with any .s files which also define it.
|
|
// Be sure to edit objc-abi.h as well.
|
|
#if __ARM_ARCH_7K__ >= 2 || (__arm64__ && !__LP64__)
|
|
# define SUPPORT_INDEXED_ISA 1
|
|
#else
|
|
# define SUPPORT_INDEXED_ISA 0
|
|
#endif
|
|
|
|
// Define SUPPORT_PACKED_ISA=1 on platforms that store the class in the isa
|
|
// field as a maskable pointer with other data around it.
|
|
#if (!__LP64__ || TARGET_OS_WIN32 || \
|
|
(TARGET_OS_SIMULATOR && !TARGET_OS_IOSMAC))
|
|
# define SUPPORT_PACKED_ISA 0
|
|
#else
|
|
# define SUPPORT_PACKED_ISA 1
|
|
#endif
|
|
|
|
// Define SUPPORT_NONPOINTER_ISA=1 on any platform that may store something
|
|
// in the isa field that is not a raw pointer.
|
|
#if !SUPPORT_INDEXED_ISA && !SUPPORT_PACKED_ISA
|
|
# define SUPPORT_NONPOINTER_ISA 0
|
|
#else
|
|
# define SUPPORT_NONPOINTER_ISA 1
|
|
#endif
|
|
|
|
// Define SUPPORT_FIXUP=1 to repair calls sites for fixup dispatch.
|
|
// Fixup messaging itself is no longer supported.
|
|
// Be sure to edit objc-abi.h as well (objc_msgSend*_fixup)
|
|
#if !(defined(__x86_64__) && (TARGET_OS_OSX || TARGET_OS_SIMULATOR))
|
|
# define SUPPORT_FIXUP 0
|
|
#else
|
|
# define SUPPORT_FIXUP 1
|
|
#endif
|
|
|
|
// Define SUPPORT_ZEROCOST_EXCEPTIONS to use "zero-cost" exceptions for OBJC2.
|
|
// Be sure to edit objc-exception.h as well (objc_add/removeExceptionHandler)
|
|
#if !__OBJC2__ || (defined(__arm__) && __USING_SJLJ_EXCEPTIONS__)
|
|
# define SUPPORT_ZEROCOST_EXCEPTIONS 0
|
|
#else
|
|
# define SUPPORT_ZEROCOST_EXCEPTIONS 1
|
|
#endif
|
|
|
|
// Define SUPPORT_ALT_HANDLERS if you're using zero-cost exceptions
|
|
// but also need to support AppKit's alt-handler scheme
|
|
// Be sure to edit objc-exception.h as well (objc_add/removeExceptionHandler)
|
|
#if !SUPPORT_ZEROCOST_EXCEPTIONS || !TARGET_OS_OSX
|
|
# define SUPPORT_ALT_HANDLERS 0
|
|
#else
|
|
# define SUPPORT_ALT_HANDLERS 1
|
|
#endif
|
|
|
|
// Define SUPPORT_RETURN_AUTORELEASE to optimize autoreleased return values
|
|
#if TARGET_OS_WIN32
|
|
# define SUPPORT_RETURN_AUTORELEASE 0
|
|
#else
|
|
# define SUPPORT_RETURN_AUTORELEASE 1
|
|
#endif
|
|
|
|
// Define SUPPORT_STRET on architectures that need separate struct-return ABI.
|
|
#if defined(__arm64__)
|
|
# define SUPPORT_STRET 0
|
|
#else
|
|
# define SUPPORT_STRET 1
|
|
#endif
|
|
|
|
// Define SUPPORT_MESSAGE_LOGGING to enable NSObjCMessageLoggingEnabled
|
|
#if !TARGET_OS_OSX
|
|
# define SUPPORT_MESSAGE_LOGGING 0
|
|
#else
|
|
# define SUPPORT_MESSAGE_LOGGING 1
|
|
#endif
|
|
|
|
// Define HAVE_TASK_RESTARTABLE_RANGES to enable usage of
|
|
// task_restartable_ranges_synchronize()
|
|
#if TARGET_OS_SIMULATOR || defined(__i386__) || defined(__arm__) || !TARGET_OS_MAC || defined(DARLING)
|
|
# define HAVE_TASK_RESTARTABLE_RANGES 0
|
|
#else
|
|
# define HAVE_TASK_RESTARTABLE_RANGES 1
|
|
#endif
|
|
|
|
// OBJC_INSTRUMENTED controls whether message dispatching is dynamically
|
|
// monitored. Monitoring introduces substantial overhead.
|
|
// NOTE: To define this condition, do so in the build command, NOT by
|
|
// uncommenting the line here. This is because objc-class.h heeds this
|
|
// condition, but objc-class.h can not #include this file (objc-config.h)
|
|
// because objc-class.h is public and objc-config.h is not.
|
|
//#define OBJC_INSTRUMENTED
|
|
|
|
// In __OBJC2__, the runtimeLock is a mutex always held
|
|
// hence the cache lock is redundant and can be elided.
|
|
//
|
|
// If the runtime lock ever becomes a rwlock again,
|
|
// the cache lock would need to be used again
|
|
#if __OBJC2__
|
|
#define CONFIG_USE_CACHE_LOCK 0
|
|
#else
|
|
#define CONFIG_USE_CACHE_LOCK 1
|
|
#endif
|
|
|
|
// Determine how the method cache stores IMPs.
|
|
#define CACHE_IMP_ENCODING_NONE 1 // Method cache contains raw IMP.
|
|
#define CACHE_IMP_ENCODING_ISA_XOR 2 // Method cache contains ISA ^ IMP.
|
|
#define CACHE_IMP_ENCODING_PTRAUTH 3 // Method cache contains ptrauth'd IMP.
|
|
|
|
#if __PTRAUTH_INTRINSICS__
|
|
// Always use ptrauth when it's supported.
|
|
#define CACHE_IMP_ENCODING CACHE_IMP_ENCODING_PTRAUTH
|
|
#elif defined(__arm__)
|
|
// 32-bit ARM uses no encoding.
|
|
#define CACHE_IMP_ENCODING CACHE_IMP_ENCODING_NONE
|
|
#else
|
|
// Everything else uses ISA ^ IMP.
|
|
#define CACHE_IMP_ENCODING CACHE_IMP_ENCODING_ISA_XOR
|
|
#endif
|
|
|
|
#define CACHE_MASK_STORAGE_OUTLINED 1
|
|
#define CACHE_MASK_STORAGE_HIGH_16 2
|
|
#define CACHE_MASK_STORAGE_LOW_4 3
|
|
|
|
#if defined(__arm64__) && __LP64__
|
|
#define CACHE_MASK_STORAGE CACHE_MASK_STORAGE_HIGH_16
|
|
#elif defined(__arm64__) && !__LP64__
|
|
#define CACHE_MASK_STORAGE CACHE_MASK_STORAGE_LOW_4
|
|
#else
|
|
#define CACHE_MASK_STORAGE CACHE_MASK_STORAGE_OUTLINED
|
|
#endif
|
|
|
|
#endif
|