home *** CD-ROM | disk | FTP | other *** search
- /* This is just like the default gvarargs.h
- except for differences described below. */
-
- /* Define __gnuc_va_list. */
-
- #ifndef __GNUC_VA_LIST
- #define __GNUC_VA_LIST
- #if ! defined (__svr4__) && ! defined (__linux__) && ! defined (__arch64__)
- /* This has to be a char * to be compatible with Sun.
- i.e., we have to pass a `va_list' to vsprintf. */
- typedef char * __gnuc_va_list;
- #else
- /* This has to be a void * to be compatible with Sun svr4.
- i.e., we have to pass a `va_list' to vsprintf. */
- typedef void * __gnuc_va_list;
- #endif
- #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)
-
- #ifdef _STDARG_H
-
- /* Call __builtin_next_arg even though we aren't using its value, so that
- we can verify that LASTARG is correct. */
- #if defined (__GCC_NEW_VARARGS__) || defined (__arch64__)
- #define va_start(AP, LASTARG) \
- (__builtin_next_arg (LASTARG), AP = (char *) __builtin_saveregs ())
- #else
- #define va_start(AP, LASTARG) \
- (__builtin_saveregs (), AP = ((char *) __builtin_next_arg (LASTARG)))
- #endif
-
- #else
-
- #define va_alist __builtin_va_alist
- #define va_dcl int __builtin_va_alist;...
-
- #if defined (__GCC_NEW_VARARGS__) || defined (__arch64__)
- #define va_start(AP) ((AP) = (char *) __builtin_saveregs ())
- #else
- #define va_start(AP) \
- (__builtin_saveregs (), (AP) = ((char *) &__builtin_va_alist))
- #endif
-
- #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(pvar) ((void)0)
-
- /* Avoid errors if compiling GCC v2 with GCC v1. */
- #if __GNUC__ == 1
- #define __extension__
- #endif
-
- /* RECORD_TYPE args passed using the C calling convention are
- passed by invisible reference. ??? RECORD_TYPE args passed
- in the stack are made to be word-aligned; for an aggregate that is
- not word-aligned, we advance the pointer to the first non-reg slot. */
-
- #ifdef __arch64__
-
- typedef unsigned int __ptrint __attribute__ ((__mode__ (__DI__)));
-
- /* ??? TODO: little endian support */
-
- #define va_arg(pvar, TYPE) \
- __extension__ \
- (*({int __type = __builtin_classify_type (* (TYPE *) 0); \
- char * __result; \
- if (__type == __real_type_class) /* float? */ \
- { \
- if (__alignof__ (TYPE) == 16) \
- (pvar) = (void *) (((__ptrint) (pvar) + 15) & -16); \
- __result = (pvar); \
- (pvar) = (char *) (pvar) + sizeof (TYPE); \
- } \
- else if (__type < __record_type_class) /* integer? */ \
- { \
- (pvar) = (char *) (pvar) + 8; \
- __result = (char *) (pvar) - sizeof (TYPE); \
- } \
- else /* aggregate object */ \
- { \
- if (sizeof (TYPE) <= 8) \
- { \
- __result = (pvar); \
- (pvar) = (char *) (pvar) + 8; \
- } \
- else if (sizeof (TYPE) <= 16) \
- { \
- if (__alignof__ (TYPE) == 16) \
- (pvar) = (void *) (((__ptrint) (pvar) + 15) & -16); \
- __result = (pvar); \
- (pvar) = (char *) (pvar) + 16; \
- } \
- else \
- { \
- __result = * (void **) (pvar); \
- (pvar) = (char *) (pvar) + 8; \
- } \
- } \
- (TYPE *) __result;}))
-
- #else /* not __arch64__ */
-
- #define __va_rounded_size(TYPE) \
- (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
-
- /* We don't declare the union member `d' to have type TYPE
- because that would lose in C++ if TYPE has a constructor. */
- /* 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_arg(pvar,TYPE) \
- __extension__ \
- (*({((__builtin_classify_type (*(TYPE*) 0) >= __record_type_class \
- || (__builtin_classify_type (*(TYPE*) 0) == __real_type_class \
- && sizeof (TYPE) == 16)) \
- ? ((pvar) = (char *)(pvar) + __va_rounded_size (TYPE *), \
- *(TYPE **) (void *) ((char *)(pvar) - __va_rounded_size (TYPE *))) \
- : __va_rounded_size (TYPE) == 8 \
- ? ({ union {char __d[sizeof (TYPE)]; int __i[2];} __u; \
- __u.__i[0] = ((int *) (void *) (pvar))[0]; \
- __u.__i[1] = ((int *) (void *) (pvar))[1]; \
- (pvar) = (char *)(pvar) + 8; \
- (TYPE *) (void *) __u.__d; }) \
- : ((pvar) = (char *)(pvar) + __va_rounded_size (TYPE), \
- ((TYPE *) (void *) ((char *)(pvar) - __va_rounded_size (TYPE)))));}))
-
- #endif /* not __arch64__ */
-
- /* Copy __gnuc_va_list into another variable of this type. */
- #define __va_copy(dest, src) (dest) = (src)
-
- #endif /* defined (_STDARG_H) || defined (_VARARGS_H) */
-