38 lines
1.0 KiB
C
38 lines
1.0 KiB
C
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#include <arch/types.h>
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#ifndef __SIZE_TYPE__
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#define __SIZE_TYPE__ unsigned long
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#endif
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typedef __SIZE_TYPE__ size_t;
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/* There is a GCC macro for a size_t type, but not
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* for a ssize_t type. Below construct tricks GCC
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* into making __SIZE_TYPE__ signed.
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*/
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#define unsigned signed
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typedef __SIZE_TYPE__ ssize_t;
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#undef unsigned
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#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
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#define member_size(TYPE, MEMBER) (sizeof(((TYPE *) 0)->MEMBER))
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#define check_member(structure, member, offset) _Static_assert( \
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offsetof(struct structure, member) == offset, \
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"`struct " #structure "` offset for `" #member "` is not " #offset)
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/* Standard units. */
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#define KiB (1 << 10)
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#define MiB (1 << 20)
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#define GiB (1 << 30)
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#define KHz (1000)
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#define MHz (1000*KHz)
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#define GHz (1000*MHz)
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#define NSECS_PER_SEC 1000000000
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#define USECS_PER_SEC 1000000
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#define MSECS_PER_SEC 1000
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#define NSECS_PER_MSEC (NSECS_PER_SEC / MSECS_PER_SEC)
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#define NSECS_PER_USEC (NSECS_PER_SEC / USECS_PER_SEC)
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#define USECS_PER_MSEC (USECS_PER_SEC / MSECS_PER_SEC)
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