X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/2d21ac55c334faf3a56e5634905ed6987fc787d4..b226f5e54a60dc81db17b1260381d7dbfea3cdf1:/bsd/sys/cdefs.h diff --git a/bsd/sys/cdefs.h b/bsd/sys/cdefs.h index c4881ef33..a7f6639e0 100644 --- a/bsd/sys/cdefs.h +++ b/bsd/sys/cdefs.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2000-2007 Apple Inc. All rights reserved. + * Copyright (c) 2000-2018 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * @@ -75,6 +75,32 @@ #define __END_DECLS #endif +/* This SDK is designed to work with clang and specific versions of + * gcc >= 4.0 with Apple's patch sets */ +#if !defined(__GNUC__) || __GNUC__ < 4 +#warning "Unsupported compiler detected" +#endif + +/* + * Compatibility with compilers and environments that don't support compiler + * feature checking function-like macros. + */ +#ifndef __has_builtin +#define __has_builtin(x) 0 +#endif +#ifndef __has_include +#define __has_include(x) 0 +#endif +#ifndef __has_feature +#define __has_feature(x) 0 +#endif +#ifndef __has_attribute +#define __has_attribute(x) 0 +#endif +#ifndef __has_extension +#define __has_extension(x) 0 +#endif + /* * The __CONCAT macro is used to concatenate parts of symbol names, e.g. * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo. @@ -126,56 +152,191 @@ #endif /* !NO_ANSI_KEYWORDS */ #endif /* !(__STDC__ || __cplusplus) */ -/* - * GCC1 and some versions of GCC2 declare dead (non-returning) and - * pure (no side effects) functions using "volatile" and "const"; - * unfortunately, these then cause warnings under "-ansi -pedantic". - * GCC2 uses a new, peculiar __attribute__((attrs)) style. All of - * these work for GNU C++ (modulo a slight glitch in the C++ grammar - * in the distribution version of 2.5.5). - */ -#if defined(__MWERKS__) && (__MWERKS__ > 0x2400) - /* newer Metrowerks compilers support __attribute__() */ -#elif __GNUC__ > 2 || __GNUC__ == 2 && __GNUC_MINOR__ >= 5 -#define __dead2 __attribute__((__noreturn__)) -#define __pure2 __attribute__((__const__)) -#if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 && __GNUC_MINOR__ < 7 -#define __unused /* no attribute */ +#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. + */ +#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). + */ +#define __used __attribute__((used)) + +/* __deprecated causes the compiler to produce a warning when encountering + * code using the deprecated functionality. + * __deprecated_msg() does the same, and compilers that support it will print + * a message along with 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. + */ +#define __deprecated __attribute__((deprecated)) + +#if __has_extension(attribute_deprecated_with_message) || \ + (defined(__GNUC__) && ((__GNUC__ >= 5) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5)))) + #define __deprecated_msg(_msg) __attribute__((deprecated(_msg))) #else -#define __unused __attribute__((__unused__)) + #define __deprecated_msg(_msg) __attribute__((deprecated)) #endif + +#if __has_extension(enumerator_attributes) + #define __deprecated_enum_msg(_msg) __deprecated_msg(_msg) #else -#define __attribute__(x) /* delete __attribute__ if non-gcc or gcc1 */ -#if defined(__GNUC__) && !defined(__STRICT_ANSI__) -/* __dead and __pure are depreciated. Use __dead2 and __pure2 instead */ -#define __dead __volatile -#define __pure __const -#endif + #define __deprecated_enum_msg(_msg) #endif +/* __unavailable causes the compiler to error out when encountering + * code using the tagged function of variable. + */ +#define __unavailable __attribute__((unavailable)) + /* Delete pseudo-keywords wherever they are not available or needed. */ #ifndef __dead #define __dead #define __pure #endif -#ifndef __dead2 -#define __dead2 -#define __pure2 -#define __unused -#endif /* - * GCC 2.95 provides `__restrict' as an extension to C90 to support the - * C99-specific `restrict' type qualifier. We happen to use `__restrict' as - * a way to define the `restrict' type qualifier without disturbing older - * software that is unaware of C99 keywords. + * We use `__restrict' as a way to define the `restrict' type qualifier + * without disturbing older software that is unaware of C99 keywords. */ -#if !(__GNUC__ == 2 && __GNUC_MINOR__ == 95) #if __STDC_VERSION__ < 199901 #define __restrict #else #define __restrict restrict #endif + +/* Compatibility with compilers and environments that don't support the + * nullability feature. + */ + +#if !__has_feature(nullability) +#ifndef __nullable +#define __nullable +#endif +#ifndef __nonnull +#define __nonnull +#endif +#ifndef __null_unspecified +#define __null_unspecified +#endif +#ifndef _Nullable +#define _Nullable +#endif +#ifndef _Nonnull +#define _Nonnull +#endif +#ifndef _Null_unspecified +#define _Null_unspecified +#endif +#endif + +/* + * __disable_tail_calls causes the compiler to not perform tail call + * optimization inside the marked function. + */ +#if __has_attribute(disable_tail_calls) +#define __disable_tail_calls __attribute__((__disable_tail_calls__)) +#else +#define __disable_tail_calls +#endif + +/* + * __not_tail_called causes the compiler to prevent tail call optimization + * on statically bound calls to the function. It has no effect on indirect + * calls. Virtual functions, objective-c methods, and functions marked as + * "always_inline" cannot be marked as __not_tail_called. + */ +#if __has_attribute(not_tail_called) +#define __not_tail_called __attribute__((__not_tail_called__)) +#else +#define __not_tail_called +#endif + +/* + * __result_use_check warns callers of a function that not using the function + * return value is a bug, i.e. dismissing malloc() return value results in a + * memory leak. + */ +#if __has_attribute(warn_unused_result) +#define __result_use_check __attribute__((__warn_unused_result__)) +#else +#define __result_use_check +#endif + +/* + * __swift_unavailable causes the compiler to mark a symbol as specifically + * 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))) +#else +#define __swift_unavailable(_msg) +#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 + * where you want to force inlining instead of letting the compiler make + * the decision, you can use __header_always_inline. + * + * Be aware that using inline for functions which compilers may also provide + * builtins can behave differently under various compilers. If you intend to + * provide an inline version of such a function, you may want to use a macro + * instead. + * + * The check for !__GNUC__ || __clang__ is because gcc doesn't correctly + * support c99 inline in some cases: + * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55965 + */ + +#if defined(__cplusplus) || \ + (__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 + /* 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 + /* 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 + +/* + * Compiler-dependent macros that bracket portions of code where the + * "-Wunreachable-code" warning should be ignored. Please use sparingly. + */ +#if defined(__clang__) +# define __unreachable_ok_push \ + _Pragma("clang diagnostic push") \ + _Pragma("clang diagnostic ignored \"-Wunreachable-code\"") +# define __unreachable_ok_pop \ + _Pragma("clang diagnostic pop") +#elif defined(__GNUC__) && ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) +# define __unreachable_ok_push \ + _Pragma("GCC diagnostic push") \ + _Pragma("GCC diagnostic ignored \"-Wunreachable-code\"") +# define __unreachable_ok_pop \ + _Pragma("GCC diagnostic pop") +#else +# define __unreachable_ok_push +# define __unreachable_ok_pop #endif /* @@ -186,17 +347,14 @@ * mismatch between the format string and subsequent function parameter * types. */ -#if __GNUC__ > 2 || __GNUC__ == 2 && __GNUC_MINOR__ >= 7 #define __printflike(fmtarg, firstvararg) \ __attribute__((__format__ (__printf__, fmtarg, firstvararg))) +#define __printf0like(fmtarg, firstvararg) \ + __attribute__((__format__ (__printf0__, fmtarg, firstvararg))) #define __scanflike(fmtarg, firstvararg) \ __attribute__((__format__ (__scanf__, fmtarg, firstvararg))) -#else -#define __printflike(fmtarg, firstvararg) -#define __scanflike(fmtarg, firstvararg) -#endif -#define __IDSTRING(name,string) static const char name[] __unused = string +#define __IDSTRING(name,string) static const char name[] __used = string #ifndef __COPYRIGHT #define __COPYRIGHT(s) __IDSTRING(copyright,s) @@ -214,14 +372,52 @@ #define __PROJECT_VERSION(s) __IDSTRING(project_version,s) #endif +/* Source compatibility only, ID string not emitted in object file */ +#ifndef __FBSDID +#define __FBSDID(s) +#endif + +#ifndef __DECONST +#define __DECONST(type, var) __CAST_AWAY_QUALIFIER(var, const, type) +#endif + +#ifndef __DEVOLATILE +#define __DEVOLATILE(type, var) __CAST_AWAY_QUALIFIER(var, volatile, type) +#endif + +#ifndef __DEQUALIFY +#define __DEQUALIFY(type, var) __CAST_AWAY_QUALIFIER(var, const volatile, type) +#endif + /* - * COMPILATION ENVIRONMENTS + * __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 // __alloc_size + +/* + * COMPILATION ENVIRONMENTS -- see compat(5) for additional detail * * DEFAULT By default newly complied code will get POSIX APIs plus * Apple API extensions in scope. * * Most users will use this compilation environment to avoid - * behavioural differences between 32 and 64 bit code. + * behavioral differences between 32 and 64 bit code. * * LEGACY Defining _NONSTD_SOURCE will get pre-POSIX APIs plus Apple * API extensions in scope. @@ -246,36 +442,139 @@ * * In any compilation environment, for correct symbol resolution to occur, * function prototypes must be in scope. It is recommended that all Apple - * tools users add etiher the "-Wall" or "-Wimplicit-function-declaration" + * tools users add either the "-Wall" or "-Wimplicit-function-declaration" * compiler flags to their projects to be warned when a function is being * used without a prototype in scope. */ +/* 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 +#if defined(__x86_64__) +#define __DARWIN_SUF_DARWIN14 "_darwin14" +#define __DARWIN14_ALIAS(sym) __asm("_" __STRING(sym) __DARWIN_SUF_DARWIN14) +#else +#define __DARWIN14_ALIAS(sym) +#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 +#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 +#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 +#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 +#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 +#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 +#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 +#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 +#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 +#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 +#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 +#endif /* PLATFORM_BridgeOS */ +#ifdef PLATFORM_MacOSX +/* Platform: MacOSX */ +#define __DARWIN_ONLY_64_BIT_INO_T 0 +/* #undef __DARWIN_ONLY_UNIX_CONFORMANCE (automatically set for 64-bit) */ +#define __DARWIN_ONLY_VERS_1050 0 +#endif /* PLATFORM_MacOSX */ +#endif /* KERNEL */ + /* * The __DARWIN_ALIAS macros are used to do symbol renaming; they allow - * legacy code to use the old symbol, thus maintiang binary compatability + * legacy code to use the old symbol, thus maintaining binary compatibility * while new code can use a standards compliant version of the same function. * * __DARWIN_ALIAS is used by itself if the function signature has not * changed, it is used along with a #ifdef check for __DARWIN_UNIX03 - * if the signature has changed. Because the __LP64__ enviroment - * only supports UNIX03 sementics it causes __DARWIN_UNIX03 to be + * if the signature has changed. Because the __LP64__ environment + * only supports UNIX03 semantics it causes __DARWIN_UNIX03 to be * defined, but causes __DARWIN_ALIAS to do no symbol mangling. * * As a special case, when XCode is used to target a specific version of the * OS, the manifest constant __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ * will be defined by the compiler, with the digits representing major version - * time 100 + minor version times 10 (e.g. 10.5 := 1050). If we are targetting + * time 100 + minor version times 10 (e.g. 10.5 := 1050). If we are targeting * pre-10.5, and it is the default compilation environment, revert the * compilation environment to pre-__DARWIN_UNIX03. */ +#if !defined(__DARWIN_ONLY_UNIX_CONFORMANCE) +# if defined(__LP64__) +# define __DARWIN_ONLY_UNIX_CONFORMANCE 1 +# else /* !__LP64__ */ +# define __DARWIN_ONLY_UNIX_CONFORMANCE 0 +# endif /* __LP64__ */ +#endif /* !__DARWIN_ONLY_UNIX_CONFORMANCE */ + #if !defined(__DARWIN_UNIX03) -# if defined(_DARWIN_C_SOURCE) || defined(_XOPEN_SOURCE) || defined(_POSIX_C_SOURCE) || defined(__LP64__) || (defined(__arm__) && !defined(KERNEL)) +# if defined(KERNEL) +# 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 */ +# 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, _POSIX_C_SOURCE, or __LP64__" +# 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 -# elif defined(_NONSTD_SOURCE) || defined(KERNEL) +# elif defined(_NONSTD_SOURCE) # define __DARWIN_UNIX03 0 # else /* default */ # if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) < 1050) @@ -287,28 +586,46 @@ #endif /* !__DARWIN_UNIX03 */ #if !defined(__DARWIN_64_BIT_INO_T) -# if defined(_DARWIN_USE_64_BIT_INODE) +# if defined(KERNEL) +# define __DARWIN_64_BIT_INO_T 0 +# elif defined(_DARWIN_USE_64_BIT_INODE) +# if defined(_DARWIN_NO_64_BIT_INODE) +# error "Can't define both _DARWIN_USE_64_BIT_INODE and _DARWIN_NO_64_BIT_INODE." +# endif /* _DARWIN_NO_64_BIT_INODE */ # define __DARWIN_64_BIT_INO_T 1 -# elif defined(_DARWIN_NO_64_BIT_INODE) || defined(KERNEL) +# elif defined(_DARWIN_NO_64_BIT_INODE) +# if __DARWIN_ONLY_64_BIT_INO_T +# error "Can't define _DARWIN_NO_64_BIT_INODE when only 64-bit inodes are available." +# endif /* __DARWIN_ONLY_64_BIT_INO_T */ # define __DARWIN_64_BIT_INO_T 0 # else /* default */ -# define __DARWIN_64_BIT_INO_T 0 +# 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 +# define __DARWIN_64_BIT_INO_T 0 +# else /* default */ +# define __DARWIN_64_BIT_INO_T 1 +# endif /* __DARWIN_ONLY_64_BIT_INO_T */ # endif #endif /* !__DARWIN_64_BIT_INO_T */ -#if !defined(__DARWIN_NON_CANCELABLE) +#if !defined(__DARWIN_VERS_1050) # if defined(KERNEL) -# define __DARWIN_NON_CANCELABLE 0 +# 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 +# define __DARWIN_VERS_1050 0 # else /* default */ -# define __DARWIN_NON_CANCELABLE 0 +# define __DARWIN_VERS_1050 1 # endif -#endif /* !__DARWIN_NON_CANCELABLE */ +#endif /* !__DARWIN_VERS_1050 */ -#if !defined(__DARWIN_VERS_1050) -# if !defined(KERNEL) && defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) >= 1050) -# define __DARWIN_VERS_1050 1 +#if !defined(__DARWIN_NON_CANCELABLE) +# if defined(KERNEL) +# define __DARWIN_NON_CANCELABLE 0 # else /* default */ -# define __DARWIN_VERS_1050 0 +# define __DARWIN_NON_CANCELABLE 0 # endif #endif /* !__DARWIN_NON_CANCELABLE */ @@ -316,19 +633,31 @@ * symbol suffixes used for symbol versioning */ #if __DARWIN_UNIX03 -# if !defined(__LP64__) && !defined(__arm__) -# define __DARWIN_SUF_UNIX03 "$UNIX2003" -# define __DARWIN_SUF_UNIX03_SET 1 -# else /* __LP64__ || __arm__ */ +# if __DARWIN_ONLY_UNIX_CONFORMANCE # define __DARWIN_SUF_UNIX03 /* nothing */ -# define __DARWIN_SUF_UNIX03_SET 0 -# endif /* !__LP64__ && !__arm__ */ +# else /* !__DARWIN_ONLY_UNIX_CONFORMANCE */ +# define __DARWIN_SUF_UNIX03 "$UNIX2003" +# endif /* __DARWIN_ONLY_UNIX_CONFORMANCE */ # if __DARWIN_64_BIT_INO_T -# define __DARWIN_SUF_64_BIT_INO_T "$INODE64" +# if __DARWIN_ONLY_64_BIT_INO_T +# define __DARWIN_SUF_64_BIT_INO_T /* nothing */ +# else /* !__DARWIN_ONLY_64_BIT_INO_T */ +# define __DARWIN_SUF_64_BIT_INO_T "$INODE64" +# endif /* __DARWIN_ONLY_64_BIT_INO_T */ # else /* !__DARWIN_64_BIT_INO_T */ # define __DARWIN_SUF_64_BIT_INO_T /* nothing */ -# endif /* __DARWIN_UNIX03 */ +# endif /* __DARWIN_64_BIT_INO_T */ + +# if __DARWIN_VERS_1050 +# if __DARWIN_ONLY_VERS_1050 +# define __DARWIN_SUF_1050 /* nothing */ +# else /* !__DARWIN_ONLY_VERS_1050 */ +# define __DARWIN_SUF_1050 "$1050" +# endif /* __DARWIN_ONLY_VERS_1050 */ +# else /* !__DARWIN_VERS_1050 */ +# define __DARWIN_SUF_1050 /* nothing */ +# endif /* __DARWIN_VERS_1050 */ # if __DARWIN_NON_CANCELABLE # define __DARWIN_SUF_NON_CANCELABLE "$NOCANCEL" @@ -336,15 +665,8 @@ # define __DARWIN_SUF_NON_CANCELABLE /* nothing */ # endif /* __DARWIN_NON_CANCELABLE */ -# if __DARWIN_VERS_1050 -# define __DARWIN_SUF_1050 "$1050" -# else /* !__DARWIN_VERS_1050 */ -# define __DARWIN_SUF_1050 /* nothing */ -# endif /* __DARWIN_VERS_1050 */ - #else /* !__DARWIN_UNIX03 */ # define __DARWIN_SUF_UNIX03 /* nothing */ -# define __DARWIN_SUF_UNIX03_SET 0 # define __DARWIN_SUF_64_BIT_INO_T /* nothing */ # define __DARWIN_SUF_NON_CANCELABLE /* nothing */ # define __DARWIN_SUF_1050 /* nothing */ @@ -358,6 +680,7 @@ #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) @@ -369,6 +692,23 @@ #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) +/* + * symbol release macros + */ +#ifdef KERNEL +#define __DARWIN_ALIAS_STARTING(_mac, _iphone, x) +#else +#include + +#if defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) +#define __DARWIN_ALIAS_STARTING(_mac, _iphone, x) __DARWIN_ALIAS_STARTING_IPHONE_##_iphone(x) +#elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) +#define __DARWIN_ALIAS_STARTING(_mac, _iphone, x) __DARWIN_ALIAS_STARTING_MAC_##_mac(x) +#else +#define __DARWIN_ALIAS_STARTING(_mac, _iphone, x) x +#endif +#endif /* KERNEL */ + /* * POSIX.1 requires that the macros we test be defined before any standard @@ -383,6 +723,7 @@ * _POSIX_C_SOURCE == 199506L 1003.1c-1995, 1003.1i-1995, * and the omnibus ISO/IEC 9945-1: 1996 * _POSIX_C_SOURCE == 200112L 1003.1-2001 + * _POSIX_C_SOURCE == 200809L 1003.1-2008 * * In addition, the X/Open Portability Guide, which is now the Single UNIX * Specification, defines a feature-test macro which indicates the version of @@ -403,10 +744,13 @@ /* Deal with various X/Open Portability Guides and Single UNIX Spec. */ #ifdef _XOPEN_SOURCE -#if _XOPEN_SOURCE - 0L >= 600L +#if _XOPEN_SOURCE - 0L >= 700L && (!defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE - 0L < 200809L) +#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 -#elif _XOPEN_SOURCE - 0L >= 500L +#elif _XOPEN_SOURCE - 0L >= 500L && (!defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE - 0L < 199506L) #undef _POSIX_C_SOURCE #define _POSIX_C_SOURCE 199506L #endif @@ -420,51 +764,49 @@ #define _POSIX_C_SOURCE 198808L #endif +/* POSIX C deprecation macros */ +#ifdef KERNEL +#define __POSIX_C_DEPRECATED(ver) +#else +#include + +#define __POSIX_C_DEPRECATED(ver) ___POSIX_C_DEPRECATED_STARTING_##ver +#endif + /* - * long long is not supported in c89 (__STRICT_ANSI__), but g++ -ansi and - * c99 still want long longs. While not perfect, we allow long longs for - * g++. + * Set a single macro which will always be defined and can be used to determine + * the appropriate namespace. For POSIX, these values will correspond to + * _POSIX_C_SOURCE value. Currently there are two additional levels corresponding + * to ANSI (_ANSI_SOURCE) and Darwin extensions (_DARWIN_C_SOURCE) */ -#define __DARWIN_NO_LONG_LONG (defined(__STRICT_ANSI__) \ - && (__STDC_VERSION__-0 < 199901L) \ - && !defined(__GNUG__)) +#define __DARWIN_C_ANSI 010000L +#define __DARWIN_C_FULL 900000L -/* - * Long double compatibility macro allow selecting variant symbols based - * on the old (compatible) 64-bit long doubles, or the new 128-bit - * long doubles. This applies only to ppc; i386 already has long double - * support, while ppc64 doesn't have any backwards history. - */ -#if defined(__ppc__) -# if defined(__LDBL_MANT_DIG__) && defined(__DBL_MANT_DIG__) && \ - __LDBL_MANT_DIG__ > __DBL_MANT_DIG__ -# if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0 < 1040 -# define __DARWIN_LDBL_COMPAT(x) __asm("_" __STRING(x) "$LDBLStub") -# else -# define __DARWIN_LDBL_COMPAT(x) __asm("_" __STRING(x) "$LDBL128") -# endif -# define __DARWIN_LDBL_COMPAT2(x) __asm("_" __STRING(x) "$LDBL128") -# define __DARWIN_LONG_DOUBLE_IS_DOUBLE 0 -# else -# define __DARWIN_LDBL_COMPAT(x) /* nothing */ -# define __DARWIN_LDBL_COMPAT2(x) /* nothing */ -# define __DARWIN_LONG_DOUBLE_IS_DOUBLE 1 -# endif -#elif defined(__i386__) || defined(__ppc64__) || defined(__x86_64__) || defined (__arm__) -# define __DARWIN_LDBL_COMPAT(x) /* nothing */ -# define __DARWIN_LDBL_COMPAT2(x) /* nothing */ -# define __DARWIN_LONG_DOUBLE_IS_DOUBLE 0 +#if defined(_ANSI_SOURCE) +#define __DARWIN_C_LEVEL __DARWIN_C_ANSI +#elif defined(_POSIX_C_SOURCE) && !defined(_DARWIN_C_SOURCE) && !defined(_NONSTD_SOURCE) +#define __DARWIN_C_LEVEL _POSIX_C_SOURCE #else -# error Unknown architecture +#define __DARWIN_C_LEVEL __DARWIN_C_FULL +#endif + +/* If the developer has neither requested a strict language mode nor a version + * of POSIX, turn on functionality provided by __STDC_WANT_LIB_EXT1__ as part + * of __DARWIN_C_FULL. + */ +#if !defined(__STDC_WANT_LIB_EXT1__) && !defined(__STRICT_ANSI__) && __DARWIN_C_LEVEL >= __DARWIN_C_FULL +#define __STDC_WANT_LIB_EXT1__ 1 #endif /* - * Deprecation macro + * long long is not supported in c89 (__STRICT_ANSI__), but g++ -ansi and + * c99 still want long longs. While not perfect, we allow long longs for + * g++. */ -#if __GNUC__ >= 3 -#define __deprecated __attribute__((deprecated)) +#if (defined(__STRICT_ANSI__) && (__STDC_VERSION__-0 < 199901L) && !defined(__GNUG__)) +#define __DARWIN_NO_LONG_LONG 1 #else -#define __deprecated /* nothing */ +#define __DARWIN_NO_LONG_LONG 0 #endif /***************************************** @@ -472,11 +814,37 @@ *****************************************/ /* - * _DARWIN_FEATURE_LONG_DOUBLE_IS_DOUBLE indicates when the long double type - * is the same as the double type (ppc only) + * _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 +#endif + +/* + * _DARWIN_FEATURE_64_ONLY_BIT_INODE indicates that the ino_t type may only + * be 64-bit; there is no support for 32-bit ino_t when this macro is defined + * (and non-zero). There is no struct stat64 either, as the regular + * struct stat will already be the 64-bit version. + */ +#if __DARWIN_ONLY_64_BIT_INO_T +#define _DARWIN_FEATURE_ONLY_64_BIT_INODE 1 +#endif + +/* + * _DARWIN_FEATURE_ONLY_VERS_1050 indicates that only those APIs updated + * in 10.5 exists; no pre-10.5 variants are available. + */ +#if __DARWIN_ONLY_VERS_1050 +#define _DARWIN_FEATURE_ONLY_VERS_1050 1 +#endif + +/* + * _DARWIN_FEATURE_ONLY_UNIX_CONFORMANCE indicates only UNIX conforming API + * are available (the legacy BSD APIs are not available) */ -#if __DARWIN_LONG_DOUBLE_IS_DOUBLE -#define _DARWIN_FEATURE_LONG_DOUBLE_IS_DOUBLE 1 +#if __DARWIN_ONLY_UNIX_CONFORMANCE +#define _DARWIN_FEATURE_ONLY_UNIX_CONFORMANCE 1 #endif /* @@ -487,12 +855,63 @@ #define _DARWIN_FEATURE_UNIX_CONFORMANCE 3 #endif +/* + * This macro casts away the qualifier from the variable + * + * Note: use at your own risk, removing qualifiers can result in + * catastrophic run-time failures. + */ +#ifndef __CAST_AWAY_QUALIFIER +#define __CAST_AWAY_QUALIFIER(variable, qualifier, type) (type) (long)(variable) +#endif + /* - * _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. + * __XNU_PRIVATE_EXTERN is a linkage decoration indicating that a symbol can be + * used from other compilation units, but not other libraries or executables. */ -#if __DARWIN_64_BIT_INO_T -#define _DARWIN_FEATURE_64_BIT_INODE 1 +#ifndef __XNU_PRIVATE_EXTERN +#define __XNU_PRIVATE_EXTERN __attribute__((visibility("hidden"))) #endif +/* + * Architecture validation for current SDK + */ +#if !defined(__sys_cdefs_arch_unknown__) && defined(__i386__) +#elif !defined(__sys_cdefs_arch_unknown__) && defined(__x86_64__) +#elif !defined(__sys_cdefs_arch_unknown__) && defined(__arm__) +#elif !defined(__sys_cdefs_arch_unknown__) && defined(__arm64__) +#else +#error Unsupported architecture +#endif + +#ifdef XNU_KERNEL_PRIVATE +/* + * Selectively ignore cast alignment warnings + */ +#define __IGNORE_WCASTALIGN(x) _Pragma("clang diagnostic push") \ + _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) */ + +#define __container_of(ptr, type, field) ({ \ + const typeof(((type *)0)->field) *__ptr = (ptr); \ + (type *)((uintptr_t)__ptr - offsetof(type, field)); \ + }) + +#endif /* KERNEL || PRIVATE */ + +#define __compiler_barrier() __asm__ __volatile__("" ::: "memory") + #endif /* !_CDEFS_H_ */