34 lines
1.1 KiB
C
34 lines
1.1 KiB
C
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/* stdarg.h for GNU.
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Note that the type used in va_arg is supposed to match the
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actual type **after default promotions**.
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Thus, va_arg (..., short) is not valid. */
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#ifndef _STDARG_H
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#define _STDARG_H
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typedef void *__gnuc_va_list;
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/* Amount of space required in an argument list for an arg of type TYPE.
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TYPE may alternatively be an expression whose type is used. */
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#define __va_rounded_size(TYPE) \
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(((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
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#define va_start(AP, LASTARG) \
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(AP = ((__gnuc_va_list) __builtin_next_arg(LASTARG)))
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#define va_end(AP) ((void)0)
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/* We cast to void * and then to TYPE * because this avoids
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a warning about increasing the alignment requirement.
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This is for little-endian machines; small args are padded upward. */
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#define va_arg(AP, TYPE) \
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(AP = (__gnuc_va_list)((char *)(AP) + __va_rounded_size(TYPE)), \
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*((TYPE *)(void *)((char *)(AP) - __va_rounded_size(TYPE))))
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/* Copy __gnuc_va_list into another variable of this type. */
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#define __va_copy(dest, src) (dest) = (src)
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typedef __gnuc_va_list va_list;
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#endif /* not _STDARG_H */
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