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C std: stdint.h appeal to compiler intrinsics for just about everything
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@nwf
nwf committed Jun 5, 2020
1 parent 70c8903 commit b361406
Showing 1 changed file with 84 additions and 88 deletions.
172 changes: 84 additions & 88 deletions include/stdint.h
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Original file line number Diff line number Diff line change
Expand Up @@ -45,27 +45,39 @@
* Useful integer type names that we can't pick up from the compile-time
* environment.
*/
typedef char int8_t;
typedef __INT8_TYPE__ int8_t;
typedef __UINT8_TYPE__ uint8_t;

typedef __INT16_TYPE__ int16_t;
typedef __UINT16_TYPE__ uint16_t;

typedef __INT32_TYPE__ int32_t;
typedef __UINT32_TYPE__ uint32_t;

typedef __INT64_TYPE__ int64_t;
typedef __UINT64_TYPE__ uint64_t;
typedef __UINT64_TYPE__ uintmax_t;

typedef __INTMAX_TYPE__ intmax_t;

typedef __PTRDIFF_TYPE__ ptrdiff_t;

typedef __INTPTR_TYPE__ intptr_t;
typedef __UINTPTR_TYPE__ uintptr_t;

typedef __INT64_TYPE__ quad_t;
typedef __UINT64_TYPE__ u_quad_t;

typedef unsigned char u_char;
typedef unsigned char uint8_t;
typedef short int16_t;
typedef unsigned short u_short;
typedef unsigned short uint16_t;
typedef int int32_t;
typedef unsigned int u_int;
typedef unsigned int uint32_t;
typedef long intmax_t;
typedef long quad_t;
typedef long ptrdiff_t;
typedef long int64_t;
typedef unsigned long u_long;
typedef unsigned long uint64_t;
typedef unsigned long uintmax_t;
typedef unsigned long u_quad_t;
typedef __uintcap_t uintptr_t;
//typedef unsigned long uintptr_t;
typedef __intcap_t intptr_t;
typedef unsigned long caddr_t;
typedef unsigned int u_int;

/*
* XXX On CHERI, this should probably be vaddr_t, but that seems to post-date
* the CheriOS branch of LLVM.
*/
typedef unsigned long caddr_t;

typedef u_long ulong;
typedef u_char uchar;
Expand All @@ -80,11 +92,11 @@ typedef uint16_t u_int16_t;
typedef uint32_t u_int32_t;
typedef uint64_t u_int64_t;

#define define_intypes(size) \
typedef int ## size ## _t int_least ## size ## _t; \
typedef uint ## size ## _t uint_least ## size ## _t; \
typedef int ## size ## _t int_fast ## size ## _t; \
typedef uint ## size ## _t uint_fast ## size ## _t;
#define define_intypes(size) \
typedef __INT_LEAST ## size ## _TYPE__ int_least ## size ## _t; \
typedef __UINT_LEAST ## size ## _TYPE__ uint_least ## size ## _t; \
typedef __INT_FAST ## size ## _TYPE__ int_fast ## size ## _t; \
typedef __UINT_FAST ## size ## _TYPE__ uint_fast ## size ## _t;

#define INT_SIZES(ITEM) ITEM(8) ITEM(16) ITEM(32) ITEM(64)

Expand Down Expand Up @@ -134,116 +146,100 @@ INT_SIZES(define_intypes)
* 7.18.2.1 Limits of exact-width integer types
*/
/* Minimum values of exact-width signed integer types. */
#define INT8_MIN (-0x7f-1)
#define INT16_MIN (-0x7fff-1)
#define INT32_MIN (-0x7fffffff-1)
#define INT64_MIN (-__INT64_C(0x7fffffffffffffff)-1)
#define INT8_MIN (-__INT8_MAX__-1)
#define INT16_MIN (-__INT16_MAX__-1)
#define INT32_MIN (-__INT32_MAX__-1)
#define INT64_MIN (-__INT64_MAX__-1)

/* Maximum values of exact-width signed integer types. */
#define INT8_MAX 0x7f
#define INT16_MAX 0x7fff
#define INT32_MAX 0x7fffffff
#define INT64_MAX __INT64_C(0x7fffffffffffffff)
#define INT8_MAX __INT8_MAX__
#define INT16_MAX __INT16_MAX__
#define INT32_MAX __INT32_MAX__
#define INT64_MAX __INT64_MAX__

/* Maximum values of exact-width unsigned integer types. */
#define UINT8_MAX 0xff
#define UINT16_MAX 0xffff
#define UINT32_MAX 0xffffffff
#define UINT64_MAX __UINT64_C(0xffffffffffffffff)
#define UINT8_MAX __UINT8_MAX__
#define UINT16_MAX __UINT16_MAX__
#define UINT32_MAX __UINT32_MAX__
#define UINT64_MAX __UINT64_MAX__

/*
* ISO/IEC 9899:1999
* 7.18.2.2 Limits of minimum-width integer types
*/
/* Minimum values of minimum-width signed integer types. */
#define INT_LEAST8_MIN INT8_MIN
#define INT_LEAST16_MIN INT16_MIN
#define INT_LEAST32_MIN INT32_MIN
#define INT_LEAST64_MIN INT64_MIN
#define INT_LEAST8_MIN (-__INT_LEAST8_MAX__-1)
#define INT_LEAST16_MIN (-__INT_LEAST16_MAX__-1)
#define INT_LEAST32_MIN (-__INT_LEAST32_MAX__-1)
#define INT_LEAST64_MIN (-__INT_LEAST64_MAX__-1)

/* Maximum values of minimum-width signed integer types. */
#define INT_LEAST8_MAX INT8_MAX
#define INT_LEAST16_MAX INT16_MAX
#define INT_LEAST32_MAX INT32_MAX
#define INT_LEAST64_MAX INT64_MAX
#define INT_LEAST8_MAX __INT_LEAST8_MAX__
#define INT_LEAST16_MAX __INT_LEAST16_MAX__
#define INT_LEAST32_MAX __INT_LEAST32_MAX__
#define INT_LEAST64_MAX __INT_LEAST64_MAX__

/* Maximum values of minimum-width unsigned integer types. */
#define UINT_LEAST8_MAX UINT8_MAX
#define UINT_LEAST16_MAX UINT16_MAX
#define UINT_LEAST32_MAX UINT32_MAX
#define UINT_LEAST64_MAX UINT64_MAX
#define UINT_LEAST8_MAX __UINT_LEAST8_MAX__
#define UINT_LEAST16_MAX __UINT_LEAST16_MAX__
#define UINT_LEAST32_MAX __UINT_LEAST32_MAX__
#define UINT_LEAST64_MAX __UINT_LEAST64_MAX__

/*
* ISO/IEC 9899:1999
* 7.18.2.3 Limits of fastest minimum-width integer types
*/
/* Minimum values of fastest minimum-width signed integer types. */
#define INT_FAST8_MIN INT32_MIN
#define INT_FAST16_MIN INT32_MIN
#define INT_FAST32_MIN INT32_MIN
#define INT_FAST64_MIN INT64_MIN
#define INT_FAST8_MIN (-__INT_FAST8_MAX__-1)
#define INT_FAST16_MIN (-__INT_FAST16_MAX__-1)
#define INT_FAST32_MIN (-__INT_FAST32_MAX__-1)
#define INT_FAST64_MIN (-__INT_FAST64_MAX__-1)

/* Maximum values of fastest minimum-width signed integer types. */
#define INT_FAST8_MAX INT32_MAX
#define INT_FAST16_MAX INT32_MAX
#define INT_FAST32_MAX INT32_MAX
#define INT_FAST64_MAX INT64_MAX
#define INT_FAST8_MAX __INT_FAST8_MAX__
#define INT_FAST16_MAX __INT_FAST16_MAX__
#define INT_FAST32_MAX __INT_FAST32_MAX__
#define INT_FAST64_MAX __INT_FAST64_MAX__

/* Maximum values of fastest minimum-width unsigned integer types. */
#define UINT_FAST8_MAX UINT32_MAX
#define UINT_FAST16_MAX UINT32_MAX
#define UINT_FAST32_MAX UINT32_MAX
#define UINT_FAST64_MAX UINT64_MAX
#define UINT_FAST8_MAX __UINT_FAST8_MAX__
#define UINT_FAST16_MAX __UINT_FAST16_MAX__
#define UINT_FAST32_MAX __UINT_FAST32_MAX__
#define UINT_FAST64_MAX __UINT_FAST64_MAX__

/*
* ISO/IEC 9899:1999
* 7.18.2.4 Limits of integer types capable of holding object pointers
*/
#ifdef __mips_n64
#define INTPTR_MIN INT64_MIN
#define INTPTR_MAX INT64_MAX
#define UINTPTR_MAX UINT64_MAX
#else
#define INTPTR_MIN INT32_MIN
#define INTPTR_MAX INT32_MAX
#define UINTPTR_MAX UINT32_MAX
#endif
#define INTPTR_MIN (-__INTPTR_MAX__-1)
#define INTPTR_MAX __INTPTR_MAX__
#define UINTPTR_MAX __UINTPTR_MAX__

/*
* ISO/IEC 9899:1999
* 7.18.2.5 Limits of greatest-width integer types
*/
#define INTMAX_MIN INT64_MIN
#define INTMAX_MAX INT64_MAX
#define UINTMAX_MAX UINT64_MAX
#define INTMAX_MIN (-__INTMAX_MAX__-1)
#define INTMAX_MAX __INTMAX_MAX__
#define UINTMAX_MAX __UINTMAX_MAX__

/*
* ISO/IEC 9899:1999
* 7.18.3 Limits of other integer types
*/
#ifdef __mips_n64
/* Limits of ptrdiff_t. */
#define PTRDIFF_MIN INT64_MIN
#define PTRDIFF_MAX INT64_MAX
#define PTRDIFF_MIN (-__PTRDIFF_MAX__-1)
#define PTRDIFF_MAX __PTRDIFF_MAX__

/* Limit of size_t. */
#define SIZE_MAX UINT64_MAX
#else
/* Limits of ptrdiff_t. */
#define PTRDIFF_MIN INT32_MIN
#define PTRDIFF_MAX INT32_MAX

/* Limit of size_t. */
#define SIZE_MAX UINT32_MAX
#endif
#define SIZE_MAX __SIZE_MAX__

/* Limits of sig_atomic_t. */
#define SIG_ATOMIC_MIN INT32_MIN
#define SIG_ATOMIC_MAX INT32_MAX
#define SIG_ATOMIC_MIN (-__SIG_ATOMIC_MAX-1)
#define SIG_ATOMIC_MAX __SIG_ATOMIC_MAX__

/* Limits of wint_t. */
#define WINT_MIN INT32_MIN
#define WINT_MAX INT32_MAX
#define WINT_MIN (-__WINT_MAX__-1)
#define WINT_MAX __WINT_MAX__

#endif /* !defined(__cplusplus) || defined(__STDC_LIMIT_MACROS) */

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