freebsd-dev/contrib/gcc/ginclude/va-i960.h
Peter Wemm a4cd5630b0 Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the
non-i386, non-unix, and generatable files have been trimmed, but can easily
be added in later if needed.

gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's
handy to have both available for reference for such little cost.

The freebsd-specific changes will then be committed, and once the dust has
settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00

77 lines
2.3 KiB
C

/* GNU C varargs support for the Intel 80960. */
/* Define __gnuc_va_list. */
#ifndef __GNUC_VA_LIST
#define __GNUC_VA_LIST
/* The first element is the address of the first argument.
The second element is the number of bytes skipped past so far. */
typedef unsigned __gnuc_va_list[2];
#endif /* not __GNUC_VA_LIST */
/* If this is for internal libc use, don't define anything but
__gnuc_va_list. */
#if defined (_STDARG_H) || defined (_VARARGS_H)
/* In GCC version 2, we want an ellipsis at the end of the declaration
of the argument list. GCC version 1 can't parse it. */
#if __GNUC__ > 1
#define __va_ellipsis ...
#else
#define __va_ellipsis
#endif
/* The stack size of the type t. */
#define __vsiz(T) (((sizeof (T) + 3) / 4) * 4)
/* The stack alignment of the type t. */
#define __vali(T) (__alignof__ (T) >= 4 ? __alignof__ (T) : 4)
/* The offset of the next stack argument after one of type t at offset i. */
#define __vpad(I, T) ((((I) + __vali (T) - 1) / __vali (T)) \
* __vali (T) + __vsiz (T))
/* Avoid errors if compiling GCC v2 with GCC v1. */
#if __GNUC__ == 1
#define __extension__
#endif
#ifdef _STDARG_H
/* Call __builtin_next_arg even though we aren't using its value, so that
we can verify that firstarg is correct. */
#define va_start(AP, LASTARG) \
__extension__ \
({ __builtin_next_arg (LASTARG); \
__asm__ ("st g14,%0" : "=m" (*(AP))); \
(AP)[1] = (__builtin_args_info (0) + __builtin_args_info (1)) * 4; })
#else
#define va_alist __builtin_va_alist
#define va_dcl char *__builtin_va_alist; __va_ellipsis
#define va_start(AP) \
__extension__ \
({ __asm__ ("st g14,%0" : "=m" (*(AP))); \
(AP)[1] = (__builtin_args_info (0) + __builtin_args_info (1)) * 4; })
#endif
/* We cast to void * and then to TYPE * because this avoids
a warning about increasing the alignment requirement. */
#define va_arg(AP, T) \
( \
( \
((AP)[1] <= 48 && (__vpad ((AP)[1], T) > 48 || __vsiz (T) > 16)) \
? ((AP)[1] = 48 + __vsiz (T)) \
: ((AP)[1] = __vpad ((AP)[1], T)) \
), \
\
*((T *) (void *) ((char *) *(AP) + (AP)[1] - __vsiz (T))) \
)
#ifndef va_end
void va_end (__gnuc_va_list); /* Defined in libgcc.a */
#endif
#define va_end(AP) ((void *)0)
#endif /* defined (_STDARG_H) || defined (_VARARGS_H) */