xnu-6153.41.3.tar.gz

[apple/xnu.git] / bsd / sys / cdefs.h

diff --git a/bsd/sys/cdefs.h b/bsd/sys/cdefs.h
index 4339caf7bdc81f752bf4ed4e3e39af466fbd2da4..066b91859ce8872a23393c337cb10e3cf56db473 100644 (file)
--- a/bsd/sys/cdefs.h
+++ b/bsd/sys/cdefs.h
@@ -1,8 +1,8 @@
 /*
 /*

- * Copyright (c) 2000-2016 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2018 Apple Inc. All rights reserved.

  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  *
  * @APPLE_OSREFERENCE_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
  * 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


@@ -11,10 +11,10 @@
  * unlawful or unlicensed copies of an Apple operating system, or to
  * circumvent, violate, or enable the circumvention or violation of, any
  * terms of an Apple operating system software license agreement.
  * unlawful or unlicensed copies of an Apple operating system, or to
  * circumvent, violate, or enable the circumvention or violation of, any
  * terms of an Apple operating system software license agreement.

- * 
+ *

  * Please obtain a copy of the License at
  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  * 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,
  * 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,


@@ -22,7 +22,7 @@
  * 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.
  * 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_OSREFERENCE_LICENSE_HEADER_END@
  */
 /* Copyright 1995 NeXT Computer, Inc. All rights reserved. */
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /* Copyright 1995 NeXT Computer, Inc. All rights reserved. */


@@ -64,15 +64,15 @@
  *     @(#)cdefs.h     8.8 (Berkeley) 1/9/95
  */
 
  *     @(#)cdefs.h     8.8 (Berkeley) 1/9/95
  */
 

-#ifndef        _CDEFS_H_
-#define        _CDEFS_H_
+#ifndef _CDEFS_H_
+#define _CDEFS_H_

 
 #if defined(__cplusplus)
 
 #if defined(__cplusplus)

-#define        __BEGIN_DECLS   extern "C" {
-#define        __END_DECLS     }
+#define __BEGIN_DECLS   extern "C" {
+#define __END_DECLS     }

 #else
 #else

-#define        __BEGIN_DECLS
-#define        __END_DECLS
+#define __BEGIN_DECLS
+#define __END_DECLS

 #endif
 
 /* This SDK is designed to work with clang and specific versions of
 #endif
 
 /* This SDK is designed to work with clang and specific versions of


@@ -109,32 +109,32 @@
  * strings produced by the __STRING macro, but this only works with ANSI C.
  */
 #if defined(__STDC__) || defined(__cplusplus)
  * strings produced by the __STRING macro, but this only works with ANSI C.
  */
 #if defined(__STDC__) || defined(__cplusplus)

-#define        __P(protos)     protos          /* full-blown ANSI C */
-#define        __CONCAT(x,y)   x ## y
-#define        __STRING(x)     #x
+#define __P(protos)     protos          /* full-blown ANSI C */
+#define __CONCAT(x, y)   x ## y
+#define __STRING(x)     #x

 
 

-#define        __const         const           /* define reserved names to standard */
-#define        __signed        signed
-#define        __volatile      volatile
+#define __const         const           /* define reserved names to standard */
+#define __signed        signed
+#define __volatile      volatile

 #if defined(__cplusplus)
 #if defined(__cplusplus)

-#define        __inline        inline          /* convert to C++ keyword */
+#define __inline        inline          /* convert to C++ keyword */

 #else
 #ifndef __GNUC__
 #else
 #ifndef __GNUC__

-#define        __inline                        /* delete GCC keyword */
+#define __inline                        /* delete GCC keyword */

 #endif /* !__GNUC__ */
 #endif /* !__cplusplus */
 
 #endif /* !__GNUC__ */
 #endif /* !__cplusplus */
 

-#else  /* !(__STDC__ || __cplusplus) */
-#define        __P(protos)     ()              /* traditional C preprocessor */
-#define        __CONCAT(x,y)   x/**/y
-#define        __STRING(x)     "x"
+#else   /* !(__STDC__ || __cplusplus) */
+#define __P(protos)     ()              /* traditional C preprocessor */
+#define __CONCAT(x, y)   x /**/ y
+#define __STRING(x)     "x"

 
 #ifndef __GNUC__
 
 #ifndef __GNUC__

-#define        __const                         /* delete pseudo-ANSI C keywords */
-#define        __inline
-#define        __signed
-#define        __volatile
-#endif /* !__GNUC__ */
+#define __const                         /* delete pseudo-ANSI C keywords */
+#define __inline
+#define __signed
+#define __volatile
+#endif  /* !__GNUC__ */

 
 /*
  * In non-ANSI C environments, new programs will want ANSI-only C keywords
 
 /*
  * In non-ANSI C environments, new programs will want ANSI-only C keywords


@@ -144,26 +144,35 @@
  * When using "gcc -traditional", we assume that this is the intent; if
  * __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone.
  */
  * When using "gcc -traditional", we assume that this is the intent; if
  * __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone.
  */

-#ifndef        NO_ANSI_KEYWORDS
-#define        const           __const                 /* convert ANSI C keywords */
-#define        inline          __inline
-#define        signed          __signed
-#define        volatile        __volatile
+#ifndef NO_ANSI_KEYWORDS
+#define const           __const                 /* convert ANSI C keywords */
+#define inline          __inline
+#define signed          __signed
+#define volatile        __volatile

 #endif /* !NO_ANSI_KEYWORDS */
 #endif /* !(__STDC__ || __cplusplus) */
 
 #endif /* !NO_ANSI_KEYWORDS */
 #endif /* !(__STDC__ || __cplusplus) */
 

-#define __dead2                __attribute__((noreturn))
-#define __pure2                __attribute__((const))
+#define __dead2         __attribute__((__noreturn__))
+#define __pure2         __attribute__((__const__))

 
 /* __unused denotes variables and functions that may not be used, preventing
  * the compiler from warning about it if not used.
  */
 
 /* __unused denotes variables and functions that may not be used, preventing
  * the compiler from warning about it if not used.
  */

-#define __unused       __attribute__((unused))
+#define __unused        __attribute__((__unused__))

 
 /* __used forces variables and functions to be included even if it appears
  * to the compiler that they are not used (and would thust be discarded).
  */
 
 /* __used forces variables and functions to be included even if it appears
  * to the compiler that they are not used (and would thust be discarded).
  */

-#define __used         __attribute__((used))
+#define __used          __attribute__((__used__))
+
+/* __cold marks code used for debugging or that is rarely taken
+ * and tells the compiler to optimize for size and outline code.
+ */
+#if __has_attribute(cold)
+#define __cold          __attribute__((__cold__))
+#else
+#define __cold
+#endif

 
 /* __deprecated causes the compiler to produce a warning when encountering
  * code using the deprecated functionality.
 
 /* __deprecated causes the compiler to produce a warning when encountering
  * code using the deprecated functionality.


@@ -172,14 +181,16 @@
  * This may require turning on such warning with the -Wdeprecated flag.
  * __deprecated_enum_msg() should be used on enums, and compilers that support
  * it will print the deprecation warning.
  * This may require turning on such warning with the -Wdeprecated flag.
  * __deprecated_enum_msg() should be used on enums, and compilers that support
  * it will print the deprecation warning.

+ * __kpi_deprecated() specifically indicates deprecation of kernel programming
+ * interfaces in Kernel.framework used by KEXTs.

  */
  */

-#define __deprecated   __attribute__((deprecated))
+#define __deprecated    __attribute__((__deprecated__))

 
 #if __has_extension(attribute_deprecated_with_message) || \
 
 #if __has_extension(attribute_deprecated_with_message) || \

-               (defined(__GNUC__) && ((__GNUC__ >= 5) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5))))
-       #define __deprecated_msg(_msg) __attribute__((deprecated(_msg)))
+        (defined(__GNUC__) && ((__GNUC__ >= 5) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5))))
+       #define __deprecated_msg(_msg) __attribute__((__deprecated__(_msg)))

 #else
 #else

-       #define __deprecated_msg(_msg) __attribute__((deprecated))
+       #define __deprecated_msg(_msg) __attribute__((__deprecated__))

 #endif
 
 #if __has_extension(enumerator_attributes)
 #endif
 
 #if __has_extension(enumerator_attributes)


@@ -188,15 +199,21 @@
        #define __deprecated_enum_msg(_msg)
 #endif
 
        #define __deprecated_enum_msg(_msg)
 #endif
 

+#if defined(KERNEL) && !defined(KERNEL_PRIVATE)
+#define __kpi_deprecated(_msg) __deprecated_msg(_msg)
+#else /* !defined(KERNEL) || defined(KERNEL_PRIVATE) */
+#define __kpi_deprecated(_msg)
+#endif /* !defined(KERNEL) || defined(KERNEL_PRIVATE) */
+

 /* __unavailable causes the compiler to error out when encountering
  * code using the tagged function of variable.
  */
 /* __unavailable causes the compiler to error out when encountering
  * code using the tagged function of variable.
  */

-#define __unavailable  __attribute__((unavailable))
+#define __unavailable   __attribute__((__unavailable__))

 
 /* Delete pseudo-keywords wherever they are not available or needed. */
 #ifndef __dead
 
 /* Delete pseudo-keywords wherever they are not available or needed. */
 #ifndef __dead

-#define        __dead
-#define        __pure
+#define __dead
+#define __pure

 #endif
 
 /*
 #endif
 
 /*


@@ -206,7 +223,7 @@
 #if __STDC_VERSION__ < 199901
 #define __restrict
 #else
 #if __STDC_VERSION__ < 199901
 #define __restrict
 #else

-#define __restrict     restrict
+#define __restrict      restrict

 #endif
 
 /* Compatibility with compilers and environments that don't support the
 #endif
 
 /* Compatibility with compilers and environments that don't support the


@@ -239,7 +256,7 @@
  * optimization inside the marked function.
  */
 #if __has_attribute(disable_tail_calls)
  * optimization inside the marked function.
  */
 #if __has_attribute(disable_tail_calls)

-#define __disable_tail_calls   __attribute__((__disable_tail_calls__))
+#define __disable_tail_calls    __attribute__((__disable_tail_calls__))

 #else
 #define __disable_tail_calls
 #endif
 #else
 #define __disable_tail_calls
 #endif


@@ -251,7 +268,7 @@
  * "always_inline" cannot be marked as __not_tail_called.
  */
 #if __has_attribute(not_tail_called)
  * "always_inline" cannot be marked as __not_tail_called.
  */
 #if __has_attribute(not_tail_called)

-#define __not_tail_called      __attribute__((__not_tail_called__))
+#define __not_tail_called       __attribute__((__not_tail_called__))

 #else
 #define __not_tail_called
 #endif
 #else
 #define __not_tail_called
 #endif


@@ -272,11 +289,20 @@
  * unavailable in Swift, regardless of any other availability in C.
  */
 #if __has_feature(attribute_availability_swift)
  * unavailable in Swift, regardless of any other availability in C.
  */
 #if __has_feature(attribute_availability_swift)

-#define __swift_unavailable(_msg)      __attribute__((__availability__(swift, unavailable, message=_msg)))
+#define __swift_unavailable(_msg)       __attribute__((__availability__(swift, unavailable, message=_msg)))

 #else
 #define __swift_unavailable(_msg)
 #endif
 
 #else
 #define __swift_unavailable(_msg)
 #endif
 

+/*
+ * __abortlike is the attribute to put on functions like abort() that are
+ * typically used to mark assertions. These optimize the codegen
+ * for outlining while still maintaining debugability.
+ */
+#ifndef __abortlike
+#define __abortlike __dead2 __cold __not_tail_called
+#endif
+

 /* Declaring inline functions within headers is error-prone due to differences
  * across various versions of the C language and extensions.  __header_inline
  * can be used to declare inline functions within system headers.  In cases
 /* Declaring inline functions within headers is error-prone due to differences
  * across various versions of the C language and extensions.  __header_inline
  * can be used to declare inline functions within system headers.  In cases


@@ -294,27 +320,27 @@
  */
 
 #if defined(__cplusplus) || \
  */
 
 #if defined(__cplusplus) || \

-    (__STDC_VERSION__ >= 199901L && \
-     !defined(__GNUC_GNU_INLINE__) && \
-     (!defined(__GNUC__) || defined(__clang__)))
+        (__STDC_VERSION__ >= 199901L && \
+        !defined(__GNUC_GNU_INLINE__) && \
+        (!defined(__GNUC__) || defined(__clang__)))

 # define __header_inline           inline
 #elif defined(__GNUC__) && defined(__GNUC_STDC_INLINE__)
 # define __header_inline           extern __inline __attribute__((__gnu_inline__))
 #elif defined(__GNUC__)
 # define __header_inline           extern __inline
 #else
 # define __header_inline           inline
 #elif defined(__GNUC__) && defined(__GNUC_STDC_INLINE__)
 # define __header_inline           extern __inline __attribute__((__gnu_inline__))
 #elif defined(__GNUC__)
 # define __header_inline           extern __inline
 #else

-  /* If we land here, we've encountered an unsupported compiler,
-   * so hopefully it understands static __inline as a fallback.
-   */
+/* If we land here, we've encountered an unsupported compiler,
+ * so hopefully it understands static __inline as a fallback.
+ */

 # define __header_inline           static __inline
 #endif
 
 #ifdef __GNUC__
 # define __header_always_inline    __header_inline __attribute__ ((__always_inline__))
 #else
 # define __header_inline           static __inline
 #endif
 
 #ifdef __GNUC__
 # define __header_always_inline    __header_inline __attribute__ ((__always_inline__))
 #else

-  /* Unfortunately, we're using a compiler that we don't know how to force to
-   * inline.  Oh well.
-   */
+/* Unfortunately, we're using a compiler that we don't know how to force to
+ * inline.  Oh well.
+ */

 # define __header_always_inline    __header_inline
 #endif
 
 # define __header_always_inline    __header_inline
 #endif
 


@@ -324,16 +350,16 @@
  */
 #if defined(__clang__)
 # define __unreachable_ok_push \
  */
 #if defined(__clang__)
 # define __unreachable_ok_push \

-         _Pragma("clang diagnostic push") \
-         _Pragma("clang diagnostic ignored \"-Wunreachable-code\"")
+        _Pragma("clang diagnostic push") \
+        _Pragma("clang diagnostic ignored \"-Wunreachable-code\"")

 # define __unreachable_ok_pop \
 # define __unreachable_ok_pop \

-         _Pragma("clang diagnostic pop")
+        _Pragma("clang diagnostic pop")

 #elif defined(__GNUC__) && ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
 # define __unreachable_ok_push \
 #elif defined(__GNUC__) && ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
 # define __unreachable_ok_push \

-         _Pragma("GCC diagnostic push") \
-         _Pragma("GCC diagnostic ignored \"-Wunreachable-code\"")
+        _Pragma("GCC diagnostic push") \
+        _Pragma("GCC diagnostic ignored \"-Wunreachable-code\"")

 # define __unreachable_ok_pop \
 # define __unreachable_ok_pop \

-         _Pragma("GCC diagnostic pop")
+        _Pragma("GCC diagnostic pop")

 #else
 # define __unreachable_ok_push
 # define __unreachable_ok_pop
 #else
 # define __unreachable_ok_push
 # define __unreachable_ok_pop


@@ -348,13 +374,13 @@
  * types.
  */
 #define __printflike(fmtarg, firstvararg) \
  * types.
  */
 #define __printflike(fmtarg, firstvararg) \

-               __attribute__((__format__ (__printf__, fmtarg, firstvararg)))
+               __attribute__((__format__ (__printf__, fmtarg, firstvararg)))

 #define __printf0like(fmtarg, firstvararg) \
 #define __printf0like(fmtarg, firstvararg) \

-               __attribute__((__format__ (__printf0__, fmtarg, firstvararg)))
+               __attribute__((__format__ (__printf0__, fmtarg, firstvararg)))

 #define __scanflike(fmtarg, firstvararg) \
 #define __scanflike(fmtarg, firstvararg) \

-               __attribute__((__format__ (__scanf__, fmtarg, firstvararg)))
+               __attribute__((__format__ (__scanf__, fmtarg, firstvararg)))

 
 

-#define __IDSTRING(name,string) static const char name[] __used = string
+#define __IDSTRING(name, string) static const char name[] __used = string

 
 #ifndef __COPYRIGHT
 #define __COPYRIGHT(s) __IDSTRING(copyright,s)
 
 #ifndef __COPYRIGHT
 #define __COPYRIGHT(s) __IDSTRING(copyright,s)


@@ -374,20 +400,41 @@
 
 /* Source compatibility only, ID string not emitted in object file */
 #ifndef __FBSDID
 
 /* Source compatibility only, ID string not emitted in object file */
 #ifndef __FBSDID

-#define __FBSDID(s) 
+#define __FBSDID(s)

 #endif
 
 #endif
 

-#ifndef        __DECONST
-#define        __DECONST(type, var)    __CAST_AWAY_QUALIFIER(var, const, type)
+#ifndef __DECONST
+#define __DECONST(type, var)    __CAST_AWAY_QUALIFIER(var, const, type)

 #endif
 
 #endif
 

-#ifndef        __DEVOLATILE
-#define        __DEVOLATILE(type, var) __CAST_AWAY_QUALIFIER(var, volatile, type)
+#ifndef __DEVOLATILE
+#define __DEVOLATILE(type, var) __CAST_AWAY_QUALIFIER(var, volatile, type)

 #endif
 
 #endif
 

-#ifndef        __DEQUALIFY
-#define        __DEQUALIFY(type, var)  __CAST_AWAY_QUALIFIER(var, const volatile, type)
+#ifndef __DEQUALIFY
+#define __DEQUALIFY(type, var)  __CAST_AWAY_QUALIFIER(var, const volatile, type)
+#endif
+
+/*
+ * __alloc_size can be used to label function arguments that represent the
+ * size of memory that the function allocates and returns. The one-argument
+ * form labels a single argument that gives the allocation size (where the
+ * arguments are numbered from 1):
+ *
+ * void        *malloc(size_t __size) __alloc_size(1);
+ *
+ * The two-argument form handles the case where the size is calculated as the
+ * product of two arguments:
+ *
+ * void        *calloc(size_t __count, size_t __size) __alloc_size(1,2);
+ */
+#ifndef __alloc_size
+#if __has_attribute(alloc_size)
+#define __alloc_size(...) __attribute__((alloc_size(__VA_ARGS__)))
+#else
+#define __alloc_size(...)

 #endif
 #endif

+#endif // __alloc_size

 
 /*
  * COMPILATION ENVIRONMENTS -- see compat(5) for additional detail
 
 /*
  * COMPILATION ENVIRONMENTS -- see compat(5) for additional detail


@@ -428,87 +475,93 @@
 
 /* These settings are particular to each product. */
 #ifdef KERNEL
 
 /* These settings are particular to each product. */
 #ifdef KERNEL

-#define __DARWIN_ONLY_64_BIT_INO_T     0
-#define __DARWIN_ONLY_UNIX_CONFORMANCE 0
-#define __DARWIN_ONLY_VERS_1050                0
+#define __DARWIN_ONLY_64_BIT_INO_T      0
+#define __DARWIN_ONLY_UNIX_CONFORMANCE  0
+#define __DARWIN_ONLY_VERS_1050         0

 #if defined(__x86_64__)
 #if defined(__x86_64__)

-#define        __DARWIN_SUF_DARWIN14   "_darwin14"
-#define        __DARWIN14_ALIAS(sym)   __asm("_" __STRING(sym) __DARWIN_SUF_DARWIN14)
+#define __DARWIN_SUF_DARWIN14   "_darwin14"
+#define __DARWIN14_ALIAS(sym)   __asm("_" __STRING(sym) __DARWIN_SUF_DARWIN14)

 #else
 #else

-#define        __DARWIN14_ALIAS(sym)
+#define __DARWIN14_ALIAS(sym)

 #endif
 #else /* !KERNEL */
 #ifdef PLATFORM_iPhoneOS
 /* Platform: iPhoneOS */
 #endif
 #else /* !KERNEL */
 #ifdef PLATFORM_iPhoneOS
 /* Platform: iPhoneOS */

-#define __DARWIN_ONLY_64_BIT_INO_T     1
-#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
-#define __DARWIN_ONLY_VERS_1050                1
+#define __DARWIN_ONLY_64_BIT_INO_T      1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE  1
+#define __DARWIN_ONLY_VERS_1050         1

 #endif /* PLATFORM_iPhoneOS */
 #ifdef PLATFORM_iPhoneSimulator
 /* Platform: iPhoneSimulator */
 #endif /* PLATFORM_iPhoneOS */
 #ifdef PLATFORM_iPhoneSimulator
 /* Platform: iPhoneSimulator */

-#define __DARWIN_ONLY_64_BIT_INO_T     1
-#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
-#define __DARWIN_ONLY_VERS_1050                1
+#define __DARWIN_ONLY_64_BIT_INO_T      1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE  1
+#define __DARWIN_ONLY_VERS_1050         1

 #endif /* PLATFORM_iPhoneSimulator */
 #ifdef PLATFORM_tvOS
 /* Platform: tvOS */
 #endif /* PLATFORM_iPhoneSimulator */
 #ifdef PLATFORM_tvOS
 /* Platform: tvOS */

-#define __DARWIN_ONLY_64_BIT_INO_T     1
-#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
-#define __DARWIN_ONLY_VERS_1050                1
+#define __DARWIN_ONLY_64_BIT_INO_T      1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE  1
+#define __DARWIN_ONLY_VERS_1050         1

 #endif /* PLATFORM_tvOS */
 #ifdef PLATFORM_AppleTVOS
 /* Platform: AppleTVOS */
 #endif /* PLATFORM_tvOS */
 #ifdef PLATFORM_AppleTVOS
 /* Platform: AppleTVOS */

-#define __DARWIN_ONLY_64_BIT_INO_T     1
-#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
-#define __DARWIN_ONLY_VERS_1050                1
+#define __DARWIN_ONLY_64_BIT_INO_T      1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE  1
+#define __DARWIN_ONLY_VERS_1050         1

 #endif /* PLATFORM_AppleTVOS */
 #ifdef PLATFORM_tvSimulator
 /* Platform: tvSimulator */
 #endif /* PLATFORM_AppleTVOS */
 #ifdef PLATFORM_tvSimulator
 /* Platform: tvSimulator */

-#define __DARWIN_ONLY_64_BIT_INO_T     1
-#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
-#define __DARWIN_ONLY_VERS_1050                1
+#define __DARWIN_ONLY_64_BIT_INO_T      1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE  1
+#define __DARWIN_ONLY_VERS_1050         1

 #endif /* PLATFORM_tvSimulator */
 #ifdef PLATFORM_AppleTVSimulator
 /* Platform: AppleTVSimulator */
 #endif /* PLATFORM_tvSimulator */
 #ifdef PLATFORM_AppleTVSimulator
 /* Platform: AppleTVSimulator */

-#define __DARWIN_ONLY_64_BIT_INO_T     1
-#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
-#define __DARWIN_ONLY_VERS_1050                1
+#define __DARWIN_ONLY_64_BIT_INO_T      1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE  1
+#define __DARWIN_ONLY_VERS_1050         1

 #endif /* PLATFORM_AppleTVSimulator */
 #ifdef PLATFORM_iPhoneOSNano
 /* Platform: iPhoneOSNano */
 #endif /* PLATFORM_AppleTVSimulator */
 #ifdef PLATFORM_iPhoneOSNano
 /* Platform: iPhoneOSNano */

-#define __DARWIN_ONLY_64_BIT_INO_T     1
-#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
-#define __DARWIN_ONLY_VERS_1050                1
+#define __DARWIN_ONLY_64_BIT_INO_T      1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE  1
+#define __DARWIN_ONLY_VERS_1050         1

 #endif /* PLATFORM_iPhoneOSNano */
 #ifdef PLATFORM_iPhoneNanoSimulator
 /* Platform: iPhoneNanoSimulator */
 #endif /* PLATFORM_iPhoneOSNano */
 #ifdef PLATFORM_iPhoneNanoSimulator
 /* Platform: iPhoneNanoSimulator */

-#define __DARWIN_ONLY_64_BIT_INO_T     1
-#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
-#define __DARWIN_ONLY_VERS_1050                1
+#define __DARWIN_ONLY_64_BIT_INO_T      1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE  1
+#define __DARWIN_ONLY_VERS_1050         1

 #endif /* PLATFORM_iPhoneNanoSimulator */
 #ifdef PLATFORM_WatchOS
 /* Platform: WatchOS */
 #endif /* PLATFORM_iPhoneNanoSimulator */
 #ifdef PLATFORM_WatchOS
 /* Platform: WatchOS */

-#define __DARWIN_ONLY_64_BIT_INO_T     1
-#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
-#define __DARWIN_ONLY_VERS_1050                1
+#define __DARWIN_ONLY_64_BIT_INO_T      1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE  1
+#define __DARWIN_ONLY_VERS_1050         1

 #endif /* PLATFORM_WatchOS */
 #ifdef PLATFORM_WatchSimulator
 /* Platform: WatchSimulator */
 #endif /* PLATFORM_WatchOS */
 #ifdef PLATFORM_WatchSimulator
 /* Platform: WatchSimulator */

-#define __DARWIN_ONLY_64_BIT_INO_T     1
-#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
-#define __DARWIN_ONLY_VERS_1050                1
+#define __DARWIN_ONLY_64_BIT_INO_T      1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE  1
+#define __DARWIN_ONLY_VERS_1050         1

 #endif /* PLATFORM_WatchSimulator */
 #ifdef PLATFORM_BridgeOS
 /* Platform: BridgeOS */
 #endif /* PLATFORM_WatchSimulator */
 #ifdef PLATFORM_BridgeOS
 /* Platform: BridgeOS */

-#define __DARWIN_ONLY_64_BIT_INO_T     1
-#define __DARWIN_ONLY_UNIX_CONFORMANCE 1
-#define __DARWIN_ONLY_VERS_1050                1
+#define __DARWIN_ONLY_64_BIT_INO_T      1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE  1
+#define __DARWIN_ONLY_VERS_1050         1

 #endif /* PLATFORM_BridgeOS */
 #endif /* PLATFORM_BridgeOS */

+#ifdef PLATFORM_DriverKit
+/* Platform: DriverKit */
+#define __DARWIN_ONLY_64_BIT_INO_T      1
+#define __DARWIN_ONLY_UNIX_CONFORMANCE  1
+#define __DARWIN_ONLY_VERS_1050         1
+#endif /* PLATFORM_DriverKit */

 #ifdef PLATFORM_MacOSX
 /* Platform: MacOSX */
 #ifdef PLATFORM_MacOSX
 /* Platform: MacOSX */

-#define __DARWIN_ONLY_64_BIT_INO_T     0
+#define __DARWIN_ONLY_64_BIT_INO_T      0

 /* #undef __DARWIN_ONLY_UNIX_CONFORMANCE (automatically set for 64-bit) */
 /* #undef __DARWIN_ONLY_UNIX_CONFORMANCE (automatically set for 64-bit) */

-#define __DARWIN_ONLY_VERS_1050                0
+#define __DARWIN_ONLY_VERS_1050         0

 #endif /* PLATFORM_MacOSX */
 #endif /* KERNEL */
 
 #endif /* PLATFORM_MacOSX */
 #endif /* KERNEL */
 


@@ -540,26 +593,26 @@
 
 #if !defined(__DARWIN_UNIX03)
 #  if defined(KERNEL)
 
 #if !defined(__DARWIN_UNIX03)
 #  if defined(KERNEL)

-#    define __DARWIN_UNIX03    0
+#    define __DARWIN_UNIX03     0

 #  elif __DARWIN_ONLY_UNIX_CONFORMANCE
 #    if defined(_NONSTD_SOURCE)
 #      error "Can't define _NONSTD_SOURCE when only UNIX conformance is available."
 #    endif /* _NONSTD_SOURCE */
 #  elif __DARWIN_ONLY_UNIX_CONFORMANCE
 #    if defined(_NONSTD_SOURCE)
 #      error "Can't define _NONSTD_SOURCE when only UNIX conformance is available."
 #    endif /* _NONSTD_SOURCE */

-#    define __DARWIN_UNIX03    1
-#  elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) < 1040)
-#    define __DARWIN_UNIX03    0
+#    define __DARWIN_UNIX03     1
+#  elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ - 0) < 1040)
+#    define __DARWIN_UNIX03     0

 #  elif defined(_DARWIN_C_SOURCE) || defined(_XOPEN_SOURCE) || defined(_POSIX_C_SOURCE)
 #    if defined(_NONSTD_SOURCE)
 #      error "Can't define both _NONSTD_SOURCE and any of _DARWIN_C_SOURCE, _XOPEN_SOURCE or _POSIX_C_SOURCE."
 #    endif /* _NONSTD_SOURCE */
 #  elif defined(_DARWIN_C_SOURCE) || defined(_XOPEN_SOURCE) || defined(_POSIX_C_SOURCE)
 #    if defined(_NONSTD_SOURCE)
 #      error "Can't define both _NONSTD_SOURCE and any of _DARWIN_C_SOURCE, _XOPEN_SOURCE or _POSIX_C_SOURCE."
 #    endif /* _NONSTD_SOURCE */

-#    define __DARWIN_UNIX03    1
+#    define __DARWIN_UNIX03     1

 #  elif defined(_NONSTD_SOURCE)
 #  elif defined(_NONSTD_SOURCE)

-#    define __DARWIN_UNIX03    0
+#    define __DARWIN_UNIX03     0

 #  else /* default */
 #  else /* default */

-#    if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) < 1050)
-#      define __DARWIN_UNIX03  0
+#    if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ - 0) < 1050)
+#      define __DARWIN_UNIX03   0

 #    else /* __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 */
 #    else /* __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 */

-#      define __DARWIN_UNIX03  1
+#      define __DARWIN_UNIX03   1

 #    endif /* __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 */
 #  endif /* _DARWIN_C_SOURCE || _XOPEN_SOURCE || _POSIX_C_SOURCE || __LP64__ */
 #endif /* !__DARWIN_UNIX03 */
 #    endif /* __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 */
 #  endif /* _DARWIN_C_SOURCE || _XOPEN_SOURCE || _POSIX_C_SOURCE || __LP64__ */
 #endif /* !__DARWIN_UNIX03 */


@@ -580,7 +633,7 @@
 #  else /* default */
 #    if __DARWIN_ONLY_64_BIT_INO_T
 #      define __DARWIN_64_BIT_INO_T 1
 #  else /* default */
 #    if __DARWIN_ONLY_64_BIT_INO_T
 #      define __DARWIN_64_BIT_INO_T 1

-#    elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) < 1060) || __DARWIN_UNIX03 == 0
+#    elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ - 0) < 1060) || __DARWIN_UNIX03 == 0

 #      define __DARWIN_64_BIT_INO_T 0
 #    else /* default */
 #      define __DARWIN_64_BIT_INO_T 1
 #      define __DARWIN_64_BIT_INO_T 0
 #    else /* default */
 #      define __DARWIN_64_BIT_INO_T 1


@@ -593,7 +646,7 @@
 #    define __DARWIN_VERS_1050 0
 #  elif __DARWIN_ONLY_VERS_1050
 #    define __DARWIN_VERS_1050 1
 #    define __DARWIN_VERS_1050 0
 #  elif __DARWIN_ONLY_VERS_1050
 #    define __DARWIN_VERS_1050 1

-#  elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) < 1050) || __DARWIN_UNIX03 == 0
+#  elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ - 0) < 1050) || __DARWIN_UNIX03 == 0

 #    define __DARWIN_VERS_1050 0
 #  else /* default */
 #    define __DARWIN_VERS_1050 1
 #    define __DARWIN_VERS_1050 0
 #  else /* default */
 #    define __DARWIN_VERS_1050 1


@@ -613,63 +666,66 @@
  */
 #if __DARWIN_UNIX03
 #  if __DARWIN_ONLY_UNIX_CONFORMANCE
  */
 #if __DARWIN_UNIX03
 #  if __DARWIN_ONLY_UNIX_CONFORMANCE

-#    define __DARWIN_SUF_UNIX03                /* nothing */
+#    define __DARWIN_SUF_UNIX03         /* nothing */

 #  else /* !__DARWIN_ONLY_UNIX_CONFORMANCE */
 #  else /* !__DARWIN_ONLY_UNIX_CONFORMANCE */

-#    define __DARWIN_SUF_UNIX03                "$UNIX2003"
+#    define __DARWIN_SUF_UNIX03         "$UNIX2003"

 #  endif /* __DARWIN_ONLY_UNIX_CONFORMANCE */
 
 #  if __DARWIN_64_BIT_INO_T
 #    if __DARWIN_ONLY_64_BIT_INO_T
 #  endif /* __DARWIN_ONLY_UNIX_CONFORMANCE */
 
 #  if __DARWIN_64_BIT_INO_T
 #    if __DARWIN_ONLY_64_BIT_INO_T

-#      define __DARWIN_SUF_64_BIT_INO_T        /* nothing */
+#      define __DARWIN_SUF_64_BIT_INO_T /* nothing */

 #    else /* !__DARWIN_ONLY_64_BIT_INO_T */
 #    else /* !__DARWIN_ONLY_64_BIT_INO_T */

-#      define __DARWIN_SUF_64_BIT_INO_T        "$INODE64"
+#      define __DARWIN_SUF_64_BIT_INO_T "$INODE64"

 #    endif /* __DARWIN_ONLY_64_BIT_INO_T */
 #  else /* !__DARWIN_64_BIT_INO_T */
 #    endif /* __DARWIN_ONLY_64_BIT_INO_T */
 #  else /* !__DARWIN_64_BIT_INO_T */

-#    define __DARWIN_SUF_64_BIT_INO_T  /* nothing */
+#    define __DARWIN_SUF_64_BIT_INO_T   /* nothing */

 #  endif /* __DARWIN_64_BIT_INO_T */
 
 #  if __DARWIN_VERS_1050
 #    if __DARWIN_ONLY_VERS_1050
 #  endif /* __DARWIN_64_BIT_INO_T */
 
 #  if __DARWIN_VERS_1050
 #    if __DARWIN_ONLY_VERS_1050

-#      define __DARWIN_SUF_1050                /* nothing */
+#      define __DARWIN_SUF_1050         /* nothing */

 #    else /* !__DARWIN_ONLY_VERS_1050 */
 #    else /* !__DARWIN_ONLY_VERS_1050 */

-#      define __DARWIN_SUF_1050                "$1050"
+#      define __DARWIN_SUF_1050         "$1050"

 #    endif /* __DARWIN_ONLY_VERS_1050 */
 #  else /* !__DARWIN_VERS_1050 */
 #    endif /* __DARWIN_ONLY_VERS_1050 */
 #  else /* !__DARWIN_VERS_1050 */

-#    define __DARWIN_SUF_1050          /* nothing */
+#    define __DARWIN_SUF_1050           /* nothing */

 #  endif /* __DARWIN_VERS_1050 */
 
 #  if __DARWIN_NON_CANCELABLE
 #  endif /* __DARWIN_VERS_1050 */
 
 #  if __DARWIN_NON_CANCELABLE

-#    define __DARWIN_SUF_NON_CANCELABLE        "$NOCANCEL"
+#    define __DARWIN_SUF_NON_CANCELABLE "$NOCANCEL"

 #  else /* !__DARWIN_NON_CANCELABLE */
 #  else /* !__DARWIN_NON_CANCELABLE */

-#    define __DARWIN_SUF_NON_CANCELABLE        /* nothing */
+#    define __DARWIN_SUF_NON_CANCELABLE /* nothing */

 #  endif /* __DARWIN_NON_CANCELABLE */
 
 #else /* !__DARWIN_UNIX03 */
 #  endif /* __DARWIN_NON_CANCELABLE */
 
 #else /* !__DARWIN_UNIX03 */

-#  define __DARWIN_SUF_UNIX03          /* nothing */
-#  define __DARWIN_SUF_64_BIT_INO_T    /* nothing */
-#  define __DARWIN_SUF_NON_CANCELABLE  /* nothing */
-#  define __DARWIN_SUF_1050            /* nothing */
+#  define __DARWIN_SUF_UNIX03           /* nothing */
+#  define __DARWIN_SUF_64_BIT_INO_T     /* nothing */
+#  define __DARWIN_SUF_NON_CANCELABLE   /* nothing */
+#  define __DARWIN_SUF_1050             /* nothing */

 #endif /* __DARWIN_UNIX03 */
 
 #endif /* __DARWIN_UNIX03 */
 

-#define __DARWIN_SUF_EXTSN             "$DARWIN_EXTSN"
+#define __DARWIN_SUF_EXTSN              "$DARWIN_EXTSN"

 
 /*
  * symbol versioning macros
  */
 
 /*
  * symbol versioning macros
  */

-#define __DARWIN_ALIAS(sym)            __asm("_" __STRING(sym) __DARWIN_SUF_UNIX03)
-#define __DARWIN_ALIAS_C(sym)          __asm("_" __STRING(sym) __DARWIN_SUF_NON_CANCELABLE __DARWIN_SUF_UNIX03)
-#define __DARWIN_ALIAS_I(sym)          __asm("_" __STRING(sym) __DARWIN_SUF_64_BIT_INO_T __DARWIN_SUF_UNIX03)
-#define __DARWIN_NOCANCEL(sym)         __asm("_" __STRING(sym) __DARWIN_SUF_NON_CANCELABLE)
-#define __DARWIN_INODE64(sym)          __asm("_" __STRING(sym) __DARWIN_SUF_64_BIT_INO_T)
+#define __DARWIN_ALIAS(sym)             __asm("_" __STRING(sym) __DARWIN_SUF_UNIX03)
+#define __DARWIN_ALIAS_C(sym)           __asm("_" __STRING(sym) __DARWIN_SUF_NON_CANCELABLE __DARWIN_SUF_UNIX03)
+#define __DARWIN_ALIAS_I(sym)           __asm("_" __STRING(sym) __DARWIN_SUF_64_BIT_INO_T __DARWIN_SUF_UNIX03)
+#define __DARWIN_NOCANCEL(sym)          __asm("_" __STRING(sym) __DARWIN_SUF_NON_CANCELABLE)
+#define __DARWIN_INODE64(sym)           __asm("_" __STRING(sym) __DARWIN_SUF_64_BIT_INO_T)

 
 

-#define __DARWIN_1050(sym)             __asm("_" __STRING(sym) __DARWIN_SUF_1050)
-#define __DARWIN_1050ALIAS(sym)                __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_UNIX03)
-#define __DARWIN_1050ALIAS_C(sym)      __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_NON_CANCELABLE __DARWIN_SUF_UNIX03)
-#define __DARWIN_1050ALIAS_I(sym)      __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_64_BIT_INO_T __DARWIN_SUF_UNIX03)
-#define __DARWIN_1050INODE64(sym)      __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_64_BIT_INO_T)
+#define __DARWIN_1050(sym)              __asm("_" __STRING(sym) __DARWIN_SUF_1050)
+#define __DARWIN_1050ALIAS(sym)         __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_UNIX03)
+#define __DARWIN_1050ALIAS_C(sym)       __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_NON_CANCELABLE __DARWIN_SUF_UNIX03)
+#define __DARWIN_1050ALIAS_I(sym)       __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_64_BIT_INO_T __DARWIN_SUF_UNIX03)
+#define __DARWIN_1050INODE64(sym)       __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_64_BIT_INO_T)

 
 

-#define __DARWIN_EXTSN(sym)            __asm("_" __STRING(sym) __DARWIN_SUF_EXTSN)
-#define __DARWIN_EXTSN_C(sym)          __asm("_" __STRING(sym) __DARWIN_SUF_EXTSN __DARWIN_SUF_NON_CANCELABLE)
+#define __DARWIN_EXTSN(sym)             __asm("_" __STRING(sym) __DARWIN_SUF_EXTSN)
+#define __DARWIN_EXTSN_C(sym)           __asm("_" __STRING(sym) __DARWIN_SUF_EXTSN __DARWIN_SUF_NON_CANCELABLE)
+#if XNU_KERNEL_PRIVATE
+#define __XNU_INTERNAL(sym)             __asm("_" __STRING(sym) "$XNU_INTERNAL")
+#endif

 
 /*
  * symbol release macros
 
 /*
  * symbol release macros


@@ -712,13 +768,13 @@
 /* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1L. */
 #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 1L
 #undef _POSIX_C_SOURCE
 /* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1L. */
 #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 1L
 #undef _POSIX_C_SOURCE

-#define        _POSIX_C_SOURCE         199009L
+#define _POSIX_C_SOURCE         199009L

 #endif
 
 /* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2L. */
 #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 2L
 #undef _POSIX_C_SOURCE
 #endif
 
 /* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2L. */
 #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 2L
 #undef _POSIX_C_SOURCE

-#define        _POSIX_C_SOURCE         199209L
+#define _POSIX_C_SOURCE         199209L

 #endif
 
 /* Deal with various X/Open Portability Guides and Single UNIX Spec. */
 #endif
 
 /* Deal with various X/Open Portability Guides and Single UNIX Spec. */


@@ -728,10 +784,10 @@
 #define _POSIX_C_SOURCE         200809L
 #elif _XOPEN_SOURCE - 0L >= 600L && (!defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE - 0L < 200112L)
 #undef _POSIX_C_SOURCE
 #define _POSIX_C_SOURCE         200809L
 #elif _XOPEN_SOURCE - 0L >= 600L && (!defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE - 0L < 200112L)
 #undef _POSIX_C_SOURCE

-#define        _POSIX_C_SOURCE         200112L
+#define _POSIX_C_SOURCE         200112L

 #elif _XOPEN_SOURCE - 0L >= 500L && (!defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE - 0L < 199506L)
 #undef _POSIX_C_SOURCE
 #elif _XOPEN_SOURCE - 0L >= 500L && (!defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE - 0L < 199506L)
 #undef _POSIX_C_SOURCE

-#define        _POSIX_C_SOURCE         199506L
+#define _POSIX_C_SOURCE         199506L

 #endif
 #endif
 
 #endif
 #endif
 


@@ -782,22 +838,22 @@
  * c99 still want long longs.  While not perfect, we allow long longs for
  * g++.
  */
  * c99 still want long longs.  While not perfect, we allow long longs for
  * g++.
  */

-#if (defined(__STRICT_ANSI__) && (__STDC_VERSION__-0 < 199901L)  && !defined(__GNUG__))
+#if (defined(__STRICT_ANSI__) && (__STDC_VERSION__ - 0 < 199901L) && !defined(__GNUG__))

 #define __DARWIN_NO_LONG_LONG 1
 #else
 #define __DARWIN_NO_LONG_LONG 0
 #endif
 
 /*****************************************
 #define __DARWIN_NO_LONG_LONG 1
 #else
 #define __DARWIN_NO_LONG_LONG 0
 #endif
 
 /*****************************************

- *  Public darwin-specific feature macros
- *****************************************/
+*  Public darwin-specific feature macros
+*****************************************/

 
 /*
  * _DARWIN_FEATURE_64_BIT_INODE indicates that the ino_t type is 64-bit, and
  * structures modified for 64-bit inodes (like struct stat) will be used.
  */
 #if __DARWIN_64_BIT_INO_T
 
 /*
  * _DARWIN_FEATURE_64_BIT_INODE indicates that the ino_t type is 64-bit, and
  * structures modified for 64-bit inodes (like struct stat) will be used.
  */
 #if __DARWIN_64_BIT_INO_T

-#define _DARWIN_FEATURE_64_BIT_INODE           1
+#define _DARWIN_FEATURE_64_BIT_INODE            1

 #endif
 
 /*
 #endif
 
 /*


@@ -807,7 +863,7 @@
  * struct stat will already be the 64-bit version.
  */
 #if __DARWIN_ONLY_64_BIT_INO_T
  * struct stat will already be the 64-bit version.
  */
 #if __DARWIN_ONLY_64_BIT_INO_T

-#define _DARWIN_FEATURE_ONLY_64_BIT_INODE      1
+#define _DARWIN_FEATURE_ONLY_64_BIT_INODE       1

 #endif
 
 /*
 #endif
 
 /*


@@ -815,7 +871,7 @@
  * in 10.5 exists; no pre-10.5 variants are available.
  */
 #if __DARWIN_ONLY_VERS_1050
  * in 10.5 exists; no pre-10.5 variants are available.
  */
 #if __DARWIN_ONLY_VERS_1050

-#define _DARWIN_FEATURE_ONLY_VERS_1050         1
+#define _DARWIN_FEATURE_ONLY_VERS_1050          1

 #endif
 
 /*
 #endif
 
 /*


@@ -823,7 +879,7 @@
  * are available (the legacy BSD APIs are not available)
  */
 #if __DARWIN_ONLY_UNIX_CONFORMANCE
  * are available (the legacy BSD APIs are not available)
  */
 #if __DARWIN_ONLY_UNIX_CONFORMANCE

-#define _DARWIN_FEATURE_ONLY_UNIX_CONFORMANCE  1
+#define _DARWIN_FEATURE_ONLY_UNIX_CONFORMANCE   1

 #endif
 
 /*
 #endif
 
 /*


@@ -831,10 +887,20 @@
  * and specifies the conformance level (3 is SUSv3)
  */
 #if __DARWIN_UNIX03
  * and specifies the conformance level (3 is SUSv3)
  */
 #if __DARWIN_UNIX03

-#define _DARWIN_FEATURE_UNIX_CONFORMANCE       3
+#define _DARWIN_FEATURE_UNIX_CONFORMANCE        3

 #endif
 
 #endif
 

-/* 
+#if defined(DRIVERKIT) && !defined(KERNEL)
+/*
+ * __DRIVERKIT_LIBC__ indicates to the C++ standard library headers and
+ * similar components that only the restricted set of standard C library
+ * functionality and headers for the DriverKit userspace driver environment
+ * are available.
+ */
+#define __DRIVERKIT_LIBC__                      1
+#endif /* defined(DRIVERKIT) && !defined(KERNEL) */
+
+/*

  * This macro casts away the qualifier from the variable
  *
  * Note: use at your own risk, removing qualifiers can result in
  * This macro casts away the qualifier from the variable
  *
  * Note: use at your own risk, removing qualifiers can result in


@@ -868,9 +934,77 @@
  * Selectively ignore cast alignment warnings
  */
 #define __IGNORE_WCASTALIGN(x) _Pragma("clang diagnostic push")                     \
  * Selectively ignore cast alignment warnings
  */
 #define __IGNORE_WCASTALIGN(x) _Pragma("clang diagnostic push")                     \

-                               _Pragma("clang diagnostic ignored \"-Wcast-align\"") \
-                               x;                                                   \
-                               _Pragma("clang diagnostic pop")
+                              _Pragma("clang diagnostic ignored \"-Wcast-align\"") \
+                              x;                                                   \
+                              _Pragma("clang diagnostic pop")
+#endif
+
+#if defined(PRIVATE) || defined(KERNEL)
+/*
+ * Check if __probable and __improbable have already been defined elsewhere.
+ * These macros inform the compiler (and humans) about which branches are likely
+ * to be taken.
+ */
+#if !defined(__probable) && !defined(__improbable)
+#define __probable(x)   __builtin_expect(!!(x), 1)
+#define __improbable(x) __builtin_expect(!!(x), 0)
+#endif /* !defined(__probable) && !defined(__improbable) */
+
+#if defined(__cplusplus)
+#define __container_of(ptr, type, field) __extension__({ \
+               const typeof(((type *)nullptr)->field) *__ptr = (ptr); \
+               (type *)((uintptr_t)__ptr - offsetof(type, field)); \
+       })
+#else
+#define __container_of(ptr, type, field) __extension__({ \
+               const typeof(((type *)NULL)->field) *__ptr = (ptr); \
+               (type *)((uintptr_t)__ptr - offsetof(type, field)); \
+       })
+#endif
+
+#endif /* KERNEL || PRIVATE */
+
+#define __compiler_barrier() __asm__ __volatile__("" ::: "memory")
+
+#if __has_attribute(enum_extensibility)
+#define __enum_open __attribute__((__enum_extensibility__(open)))
+#define __enum_closed __attribute__((__enum_extensibility__(closed)))
+#else
+#define __enum_open
+#define __enum_closed
+#endif // __has_attribute(enum_extensibility)
+
+#if __has_attribute(flag_enum)
+#define __enum_options __attribute__((__flag_enum__))
+#else
+#define __enum_options
+#endif
+
+/*
+ * Similar to OS_ENUM/OS_CLOSED_ENUM/OS_OPTIONS/OS_CLOSED_OPTIONS
+ *
+ * This provides more advanced type checking on compilers supporting
+ * the proper extensions, even in C.
+ */
+#if __has_feature(objc_fixed_enum) || __has_extension(cxx_fixed_enum) || \
+        __has_extension(cxx_strong_enums)
+#define __enum_decl(_name, _type, ...) \
+               typedef enum : _type __VA_ARGS__ __enum_open _name
+#define __enum_closed_decl(_name, _type, ...) \
+               typedef enum : _type __VA_ARGS__ __enum_closed _name
+#define __options_decl(_name, _type, ...) \
+               typedef enum : _type __VA_ARGS__ __enum_open __enum_options _name
+#define __options_closed_decl(_name, _type, ...) \
+               typedef enum : _type __VA_ARGS__ __enum_closed __enum_options _name
+#else
+#define __enum_decl(_name, _type, ...) \
+               typedef _type _name; enum __VA_ARGS__ __enum_open
+#define __enum_closed_decl(_name, _type, ...) \
+               typedef _type _name; enum __VA_ARGS__ __enum_closed
+#define __options_decl(_name, _type, ...) \
+               typedef _type _name; enum __VA_ARGS__ __enum_open __enum_options
+#define __options_closed_decl(_name, _type, ...) \
+               typedef _type _name; enum __VA_ARGS__ __enum_closed __enum_options

 #endif
 
 #endif /* !_CDEFS_H_ */
 #endif
 
 #endif /* !_CDEFS_H_ */