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dd260d95fd
Currently, we only have UINT32_MAX and UINT64_MAX in limits.h, and
then stdint.h and kernel.h somewhat randomly define UINT8_MAX and
INT32_MAX, respectively.
Provide a full set of definitions in terms of the min/max macros for
the types that [u]intNN_t are defined in terms of, namely the {s,u}NN
ones.
Try to avoid breaking whatever depended on getting UINT8_MAX from our
compat stdint.h by replacing it with an include of limits.h.
Signed-off-by: Rasmus Villemoes <ravi@prevas.dk>
77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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#ifndef _LIMITS_H
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#define _LIMITS_H
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#define SCHAR_MAX __SCHAR_MAX__
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#define SCHAR_MIN (-SCHAR_MAX - 1)
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#define UCHAR_MAX (SCHAR_MAX * 2 + 1)
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#ifdef __CHAR_UNSIGNED__
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#define CHAR_MAX UCHAR_MAX
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#define CHAR_MIN 0
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#else
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#define CHAR_MAX SCHAR_MAX
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#define CHAR_MIN SCHAR_MIN
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#endif
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#define SHRT_MAX __SHRT_MAX__
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#define SHRT_MIN (-SHRT_MAX - 1)
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#define USHRT_MAX (SHRT_MAX * 2 + 1)
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#define INT_MAX __INT_MAX__
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#define INT_MIN (-INT_MAX - 1)
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#define UINT_MAX (INT_MAX * 2U + 1U)
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#define LONG_MAX __LONG_MAX__
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#define LONG_MIN (-LONG_MAX - 1L)
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#define ULONG_MAX (LONG_MAX * 2UL + 1UL)
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#define LLONG_MAX __LONG_LONG_MAX__
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#define LLONG_MIN (-LLONG_MAX - 1LL)
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#define ULLONG_MAX (LLONG_MAX * 2ULL + 1ULL)
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#define U8_MAX UCHAR_MAX
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#define S8_MAX SCHAR_MAX
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#define S8_MIN SCHAR_MIN
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#define U16_MAX USHRT_MAX
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#define S16_MAX SHRT_MAX
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#define S16_MIN SHRT_MIN
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#define U32_MAX UINT_MAX
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#define S32_MAX INT_MAX
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#define S32_MIN INT_MIN
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#define U64_MAX ULLONG_MAX
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#define S64_MAX LLONG_MAX
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#define S64_MIN LLONG_MIN
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#define UINT8_MAX U8_MAX
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#define INT8_MAX S8_MAX
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#define INT8_MIN S8_MIN
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#define UINT16_MAX U16_MAX
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#define INT16_MAX S16_MAX
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#define INT16_MIN S16_MIN
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#define UINT32_MAX U32_MAX
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#define INT32_MAX S32_MAX
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#define INT32_MIN S32_MIN
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#define UINT64_MAX U64_MAX
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#define INT64_MAX S64_MAX
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#define INT64_MIN S64_MIN
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#define CHAR_BIT 8
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#if (defined(CONFIG_64BIT) && !defined(CONFIG_SPL_BUILD)) || \
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(defined(CONFIG_SPL_64BIT) && defined(CONFIG_SPL_BUILD))
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#define UINTPTR_MAX UINT64_MAX
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#else
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#define UINTPTR_MAX UINT32_MAX
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#endif
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#ifndef SIZE_MAX
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#define SIZE_MAX UINTPTR_MAX
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#endif
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#ifndef SSIZE_MAX
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#define SSIZE_MAX ((ssize_t)(SIZE_MAX >> 1))
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#endif
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#endif /* _LIMITS_H */
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