111 lines
3.5 KiB
C
111 lines
3.5 KiB
C
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/* ---------------------------------------- */
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/* VARARGS for MIPS/GNU CC */
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/* */
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/* */
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/* */
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/* */
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/* ---------------------------------------- */
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/* These macros implement varargs for GNU C--either traditional or ANSI. */
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/* Define __gnuc_va_list. */
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#ifndef __GNUC_VA_LIST
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#define __GNUC_VA_LIST
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typedef char * __gnuc_va_list;
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#endif /* not __GNUC_VA_LIST */
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/* If this is for internal libc use, don't define anything but
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__gnuc_va_list. */
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#if defined (_STDARG_H) || defined (_VARARGS_H)
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/* In GCC version 2, we want an ellipsis at the end of the declaration
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of the argument list. GCC version 1 can't parse it. */
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#if __GNUC__ > 1
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#define __va_ellipsis ...
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#else
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#define __va_ellipsis
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#endif
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#ifdef __mips64
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#define __va_rounded_size(__TYPE) \
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(((sizeof (__TYPE) + 8 - 1) / 8) * 8)
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#else
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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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#endif
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/* Get definitions for _MIPS_SIM_ABI64 etc. */
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#ifdef _MIPS_SIM
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#include <sgidefs.h>
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#endif
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#ifdef _STDARG_H
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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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#else
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#define va_alist __builtin_va_alist
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#ifdef __mips64
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/* This assumes that `long long int' is always a 64 bit type. */
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#define va_dcl long long int __builtin_va_alist; __va_ellipsis
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#else
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#define va_dcl int __builtin_va_alist; __va_ellipsis
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#endif
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/* Need alternate code for _MIPS_SIM_ABI64. */
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#if defined(_MIPS_SIM) && (_MIPS_SIM == _MIPS_SIM_ABI64)
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#define va_start(__AP) \
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(__AP = (__gnuc_va_list) __builtin_next_arg () \
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+ (__builtin_args_info (2) >= 8 ? -8 : 0))
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#else
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#define va_start(__AP) __AP = (char *) &__builtin_va_alist
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#endif
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#endif
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#ifndef va_end
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void va_end (__gnuc_va_list); /* Defined in libgcc.a */
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#endif
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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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/* The __mips64 cases are reversed from the 32 bit cases, because the standard
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32 bit calling convention left-aligns all parameters smaller than a word,
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whereas the __mips64 calling convention does not (and hence they are
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right aligned). */
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#ifdef __mips64
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#ifdef __MIPSEB__
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#define va_arg(__AP, __type) \
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((__type *) (void *) (__AP = (char *) ((((__PTRDIFF_TYPE__)__AP + 8 - 1) & -8) \
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+ __va_rounded_size (__type))))[-1]
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#else
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#define va_arg(__AP, __type) \
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((__AP = (char *) ((((__PTRDIFF_TYPE__)__AP + 8 - 1) & -8) \
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+ __va_rounded_size (__type))), \
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*(__type *) (void *) (__AP - __va_rounded_size (__type)))
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#endif
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#else /* not __mips64 */
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#ifdef __MIPSEB__
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/* For big-endian machines. */
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#define va_arg(__AP, __type) \
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((__AP = (char *) ((__alignof__ (__type) > 4 \
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? ((int)__AP + 8 - 1) & -8 \
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: ((int)__AP + 4 - 1) & -4) \
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+ __va_rounded_size (__type))), \
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*(__type *) (void *) (__AP - __va_rounded_size (__type)))
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#else
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/* For little-endian machines. */
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#define va_arg(__AP, __type) \
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((__type *) (void *) (__AP = (char *) ((__alignof__(__type) > 4 \
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? ((int)__AP + 8 - 1) & -8 \
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: ((int)__AP + 4 - 1) & -4) \
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+ __va_rounded_size(__type))))[-1]
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#endif
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#endif
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#endif /* defined (_STDARG_H) || defined (_VARARGS_H) */
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