112 lines
3.2 KiB
C
112 lines
3.2 KiB
C
|
/* stdarg/varargs support for the ARC */
|
||
|
|
|
||
|
|
/* Define __gnuc_va_list. */
|
||
|
|
|
||
|
|
#ifndef __GNUC_VA_LIST
|
||
|
|
#define __GNUC_VA_LIST
|
||
|
|
typedef void * __gnuc_va_list;
|
||
|
|
#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
|
||
|
|
|
||
|
|
/* See arc_setup_incoming_varargs for reasons for the oddity in va_start. */
|
||
|
|
#ifdef _STDARG_H
|
||
|
|
#define va_start(AP, LASTARG) \
|
||
|
|
(AP = (__gnuc_va_list) ((int *) __builtin_next_arg (LASTARG) \
|
||
|
|
+ (__builtin_args_info (0) < 8 \
|
||
|
|
? (__builtin_args_info (0) & 1) \
|
||
|
|
: 0)))
|
||
|
|
#else
|
||
|
|
#define va_alist __builtin_va_alist
|
||
|
|
#define va_dcl int __builtin_va_alist; __va_ellipsis
|
||
|
|
#define va_start(AP) \
|
||
|
|
(AP = (__gnuc_va_list) ((int *) &__builtin_va_alist \
|
||
|
|
+ (__builtin_args_info (0) < 8 \
|
||
|
|
? (__builtin_args_info (0) & 1) \
|
||
|
|
: 0)))
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef va_end
|
||
|
|
void va_end (__gnuc_va_list); /* Defined in libgcc.a */
|
||
|
|
|
||
|
|
/* Values returned by __builtin_classify_type. */
|
||
|
|
|
||
|
|
enum __va_type_classes {
|
||
|
|
__no_type_class = -1,
|
||
|
|
__void_type_class,
|
||
|
|
__integer_type_class,
|
||
|
|
__char_type_class,
|
||
|
|
__enumeral_type_class,
|
||
|
|
__boolean_type_class,
|
||
|
|
__pointer_type_class,
|
||
|
|
__reference_type_class,
|
||
|
|
__offset_type_class,
|
||
|
|
__real_type_class,
|
||
|
|
__complex_type_class,
|
||
|
|
__function_type_class,
|
||
|
|
__method_type_class,
|
||
|
|
__record_type_class,
|
||
|
|
__union_type_class,
|
||
|
|
__array_type_class,
|
||
|
|
__string_type_class,
|
||
|
|
__set_type_class,
|
||
|
|
__file_type_class,
|
||
|
|
__lang_type_class
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|
||
|
|
#define va_end(AP) ((void)0)
|
||
|
|
|
||
|
|
/* Avoid errors if compiling GCC v2 with GCC v1. */
|
||
|
|
#if __GNUC__ == 1
|
||
|
|
#define __extension__
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* All aggregates are passed by reference. All scalar types larger than 8
|
||
|
|
bytes are passed by reference. */
|
||
|
|
/* We cast to void * and then to TYPE * because this avoids
|
||
|
|
a warning about increasing the alignment requirement.
|
||
|
|
The casts to char * avoid warnings about invalid pointer arithmetic. */
|
||
|
|
|
||
|
|
#define __va_rounded_size(TYPE) \
|
||
|
|
(((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
|
||
|
|
|
||
|
|
#ifdef __big_endian__
|
||
|
|
#define va_arg(AP,TYPE) \
|
||
|
|
__extension__ \
|
||
|
|
(*({((__builtin_classify_type (*(TYPE*) 0) >= __record_type_class \
|
||
|
|
|| __va_rounded_size (TYPE) > 8) \
|
||
|
|
? ((AP) = (char *)(AP) + __va_rounded_size (TYPE *), \
|
||
|
|
*(TYPE **) (void *) ((char *)(AP) - __va_rounded_size (TYPE *))) \
|
||
|
|
: ((TYPE *) (void *) \
|
||
|
|
(AP = (void *) ((__alignof__ (TYPE) > 4 \
|
||
|
|
? ((int) AP + 8 - 1) & -8 \
|
||
|
|
: (int) AP) \
|
||
|
|
+ __va_rounded_size (TYPE))) - 1));}))
|
||
|
|
#else
|
||
|
|
#define va_arg(AP,TYPE) \
|
||
|
|
__extension__ \
|
||
|
|
(*({((__builtin_classify_type (*(TYPE*) 0) >= __record_type_class \
|
||
|
|
|| __va_rounded_size (TYPE) > 8) \
|
||
|
|
? ((AP) = (char *)(AP) + __va_rounded_size (TYPE *), \
|
||
|
|
*(TYPE **) (void *) ((char *)(AP) - __va_rounded_size (TYPE *))) \
|
||
|
|
: ((AP = (void *) ((__alignof__ (TYPE) > 4 \
|
||
|
|
? ((int) AP + 8 - 1) & -8 \
|
||
|
|
: (int) AP) \
|
||
|
|
+ __va_rounded_size (TYPE))), \
|
||
|
|
(TYPE *) (void *) (AP - __va_rounded_size (TYPE))));}))
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* defined (_STDARG_H) || defined (_VARARGS_H) */
|