X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/1c79356b52d46aa6b508fb032f5ae709b1f2897b..15129b1c8dbb3650c63b70adb1cad9af601c6c17:/EXTERNAL_HEADERS/stdint.h diff --git a/EXTERNAL_HEADERS/stdint.h b/EXTERNAL_HEADERS/stdint.h index 98fd43852..9d86e8a62 100644 --- a/EXTERNAL_HEADERS/stdint.h +++ b/EXTERNAL_HEADERS/stdint.h @@ -1,28 +1,24 @@ /* - * Copyright (c) 2000,2001 Apple Computer, Inc. All rights reserved. - * - * We build on rather than in order to - * minimize the global namespace pollution (i.e., we'd like to define - * *only* those identifiers that the C standard mandates should be - * defined by ). Using means that (at - * least as of January 2001) all of the extra macros that do get - * #defined by #include'ing are in the implementor's - * namespace ("_[A-Z].*" or "__.*"). - * - * The reason that we do #include the relevant ...types.h instead of - * creating several "competing" typedefs is to make header collisions - * less likely during the transition to C99. - * - * Caveat: There are still five extra typedef's defined by doing it - * this way: "u_int{8,16,32,64}_t" and "register_t". Might be - * fixable via pre- and post- #defines, but probably not worth it. + * Copyright (c) 2000-2010 Apple Inc. + * All rights reserved. */ -#ifndef _STDINT_H_ -#define _STDINT_H_ +#ifndef _KERNEL_STDINT_H_ +#define _KERNEL_STDINT_H_ + +#ifndef KERNEL +/* For user-space code that may include this header */ +#include_next +#else /* KERNEL */ #include +#if __LP64__ +#define __WORDSIZE 64 +#else +#define __WORDSIZE 32 +#endif + /* from ISO/IEC 988:1999 spec */ /* 7.18.1.1 Exact-width integer types */ @@ -36,7 +32,7 @@ typedef u_int32_t uint32_t; /* u_int32_t is defined in */ -/* 7.18.1.2 Minumun-width integer types */ +/* 7.18.1.2 Minimum-width integer types */ typedef int8_t int_least8_t; typedef int16_t int_least16_t; typedef int32_t int_least32_t; @@ -58,7 +54,7 @@ typedef uint32_t uint_fast32_t; typedef uint64_t uint_fast64_t; -/* 7.18.1.4 Integer types capable of hgolding object pointers */ +/* 7.18.1.4 Integer types capable of holding object pointers */ /* intptr_t is defined in */ /* uintptr_t is defined in */ @@ -67,16 +63,6 @@ typedef uint64_t uint_fast64_t; typedef long long intmax_t; typedef unsigned long long uintmax_t; - -/* "C++ implementations should define these macros only when - * __STDC_LIMIT_MACROS is defined before is included." - * In other words, if C++, then __STDC_LIMIT_MACROS enables the - * macros below. (Note that there also exists a different enabling - * macro (__STDC_CONSTANT_MACROS) for the last few, below.) - */ -#if (! defined(__cplusplus)) || defined(__STDC_LIMIT_MACROS) - - /* 7.18.2 Limits of specified-width integer types: * These #defines specify the minimum and maximum limits * of each of the types declared above. @@ -84,15 +70,21 @@ typedef unsigned long long uintmax_t; /* 7.18.2.1 Limits of exact-width integer types */ -#define INT8_MIN -128 -#define INT16_MIN -32768 -#define INT32_MIN -2147483648 -#define INT64_MIN -9223372036854775808LL - -#define INT8_MAX +127 -#define INT16_MAX +32767 -#define INT32_MAX +2147483647 -#define INT64_MAX +9223372036854775807LL +#define INT8_MAX 127 +#define INT16_MAX 32767 +#define INT32_MAX 2147483647 +#define INT64_MAX 9223372036854775807LL + +#define INT8_MIN -128 +#define INT16_MIN -32768 + /* + Note: the literal "most negative int" cannot be written in C -- + the rules in the standard (section 6.4.4.1 in C99) will give it + an unsigned type, so INT32_MIN (and the most negative member of + any larger signed type) must be written via a constant expression. + */ +#define INT32_MIN (-INT32_MAX-1) +#define INT64_MIN (-INT64_MAX-1) #define UINT8_MAX 255 #define UINT16_MAX 65535 @@ -133,10 +125,19 @@ typedef unsigned long long uintmax_t; /* 7.18.2.4 Limits of integer types capable of holding object pointers */ +#if __WORDSIZE == 64 +#define INTPTR_MIN INT64_MIN +#define INTPTR_MAX INT64_MAX +#else #define INTPTR_MIN INT32_MIN #define INTPTR_MAX INT32_MAX - +#endif + +#if __WORDSIZE == 64 +#define UINTPTR_MAX UINT64_MAX +#else #define UINTPTR_MAX UINT32_MAX +#endif /* 7.18.2.5 Limits of greatest-width integer types */ #define INTMAX_MIN INT64_MIN @@ -145,42 +146,68 @@ typedef unsigned long long uintmax_t; #define UINTMAX_MAX UINT64_MAX /* 7.18.3 "Other" */ +#if __WORDSIZE == 64 +#define PTRDIFF_MIN INT64_MIN +#define PTRDIFF_MAX INT64_MAX +#else #define PTRDIFF_MIN INT32_MIN #define PTRDIFF_MAX INT32_MAX +#endif /* We have no sig_atomic_t yet, so no SIG_ATOMIC_{MIN,MAX}. Should end up being {-127,127} or {0,255} ... or bigger. My bet would be on one of {U}INT32_{MIN,MAX}. */ +#if __WORDSIZE == 64 +#define SIZE_MAX UINT64_MAX +#else #define SIZE_MAX UINT32_MAX - -#define WCHAR_MAX INT32_MAX - -/* We have no wint_t yet, so no WINT_{MIN,MAX}. - Should end up being {U}INT32_{MIN,MAX}, depending. */ - - -#endif /* if C++, then __STDC_LIMIT_MACROS enables the above macros */ - -/* "C++ implementations should define these macros only when - * __STDC_CONSTANT_MACROS is defined before is included." - */ -#if (! defined(__cplusplus)) || defined(__STDC_CONSTANT_MACROS) +#endif + +#if defined(__STDC_WANT_LIB_EXT1__) && __STDC_WANT_LIB_EXT1__ >= 1 +#define RSIZE_MAX (SIZE_MAX >> 1) +#endif + +#ifndef WCHAR_MAX +# ifdef __WCHAR_MAX__ +# define WCHAR_MAX __WCHAR_MAX__ +# else +# define WCHAR_MAX 0x7fffffff +# endif +#endif + +/* WCHAR_MIN should be 0 if wchar_t is an unsigned type and + (-WCHAR_MAX-1) if wchar_t is a signed type. Unfortunately, + it turns out that -fshort-wchar changes the signedness of + the type. */ +#ifndef WCHAR_MIN +# if WCHAR_MAX == 0xffff +# define WCHAR_MIN 0 +# else +# define WCHAR_MIN (-WCHAR_MAX-1) +# endif +#endif + +#define WINT_MIN INT32_MIN +#define WINT_MAX INT32_MAX + +#define SIG_ATOMIC_MIN INT32_MIN +#define SIG_ATOMIC_MAX INT32_MAX /* 7.18.4 Macros for integer constants */ -#define INT8_C(v) ((int8_t)v) -#define INT16_C(v) ((int16_t)v) -#define INT32_C(v) (v ## L) +#define INT8_C(v) (v) +#define INT16_C(v) (v) +#define INT32_C(v) (v) #define INT64_C(v) (v ## LL) -#define UINT8_C(v) ((uint8_t)v) -#define UINT16_C(v) ((uint16_t)v) -#define UINT32_C(v) (v ## UL) +#define UINT8_C(v) (v ## U) +#define UINT16_C(v) (v ## U) +#define UINT32_C(v) (v ## U) #define UINT64_C(v) (v ## ULL) #define INTMAX_C(v) (v ## LL) #define UINTMAX_C(v) (v ## ULL) -#endif /* if C++, then __STDC_CONSTANT_MACROS enables the above macros */ +#endif /* KERNEL */ -#endif /* _STDINT_H_ */ +#endif /* _KERNEL_STDINT_H_ */