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- /* GNU C varargs support for the PowerPC with either the V.4 or Windows NT calling sequences */
-
- #ifndef _WIN32
- /* System V.4 support */
- /* Define __gnuc_va_list. */
-
- #ifndef __GNUC_VA_LIST
- #define __GNUC_VA_LIST
-
- #ifndef _SYS_VA_LIST_H
- #define _SYS_VA_LIST_H /* Solaris sys/va_list.h */
-
- /* Solaris decided to rename overflow_arg_area to input_arg_area,
- so handle it via a macro. */
- #define __va_overflow(AP) (AP)->overflow_arg_area
-
- /* Note that the names in this structure are in the user's namespace, but
- that the V.4 abi explicitly states that these names should be used. */
- typedef struct __va_list_tag {
- char gpr; /* index into the array of 8 GPRs stored in the
- register save area gpr=0 corresponds to r3,
- gpr=1 to r4, etc. */
- char fpr; /* index into the array of 8 FPRs stored in the
- register save area fpr=0 corresponds to f1,
- fpr=1 to f2, etc. */
- char *overflow_arg_area; /* location on stack that holds the next
- overflow argument */
- char *reg_save_area; /* where r3:r10 and f1:f8, if saved are stored */
- } __va_list[1], __gnuc_va_list[1];
-
- #else /* _SYS_VA_LIST */
-
- typedef __va_list __gnuc_va_list;
- #define __va_overflow(AP) (AP)->input_arg_area
-
- #endif /* not _SYS_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)
-
- /* Register save area located below the frame pointer */
- #ifndef __VA_PPC_H__
- #define __VA_PPC_H__
- typedef struct {
- long __gp_save[8]; /* save area for GP registers */
- double __fp_save[8]; /* save area for FP registers */
- } __va_regsave_t;
-
- /* Macros to access the register save area */
- /* We cast to void * and then to TYPE * because this avoids
- a warning about increasing the alignment requirement. */
- #define __VA_FP_REGSAVE(AP,TYPE) \
- ((TYPE *) (void *) (&(((__va_regsave_t *) \
- (AP)->reg_save_area)->__fp_save[(int)(AP)->fpr])))
-
- #define __VA_GP_REGSAVE(AP,TYPE) \
- ((TYPE *) (void *) (&(((__va_regsave_t *) \
- (AP)->reg_save_area)->__gp_save[(int)(AP)->gpr])))
-
- /* Common code for va_start for both varargs and stdarg. This depends
- on the format of rs6000_args in rs6000.h. The fields used are:
-
- #0 WORDS # words used for GP regs/stack values
- #1 FREGNO next available FP register
- #2 NARGS_PROTOTYPE # args left in the current prototype
- #3 ORIG_NARGS original value of NARGS_PROTOTYPE
- #4 VARARGS_OFFSET offset from frame pointer of varargs area */
-
- #define __va_words __builtin_args_info (0)
- #define __va_fregno __builtin_args_info (1)
- #define __va_nargs __builtin_args_info (2)
- #define __va_orig_nargs __builtin_args_info (3)
- #define __va_varargs_offset __builtin_args_info (4)
-
- #define __va_start_common(AP, FAKE) \
- __extension__ ({ \
- register int __words = __va_words - FAKE; \
- \
- (AP)->gpr = (__words < 8) ? __words : 8; \
- (AP)->fpr = __va_fregno - 33; \
- (AP)->reg_save_area = (((char *) __builtin_frame_address (0)) \
- + __va_varargs_offset); \
- __va_overflow(AP) = ((char *)__builtin_saveregs () \
- + (((__words >= 8) ? __words - 8 : 0) \
- * sizeof (long))); \
- (void)0; \
- })
-
- #ifdef _STDARG_H /* stdarg.h support */
-
- /* Calling __builtin_next_arg gives the proper error message if LASTARG is
- not indeed the last argument. */
- #define va_start(AP,LASTARG) \
- (__builtin_next_arg (LASTARG), __va_start_common (AP, 0))
-
- #else /* varargs.h support */
-
- #define va_start(AP) __va_start_common (AP, 1)
- #define va_alist __va_1st_arg
- #define va_dcl register int va_alist; ...
-
- #endif /* _STDARG_H */
-
- #ifdef _SOFT_FLOAT
- #define __va_float_p(TYPE) 0
- #else
- #define __va_float_p(TYPE) (__builtin_classify_type(*(TYPE *)0) == 8)
- #endif
-
- #define __va_longlong_p(TYPE) \
- ((__builtin_classify_type(*(TYPE *)0) == 1) && (sizeof(TYPE) == 8))
-
- #define __va_aggregate_p(TYPE) (__builtin_classify_type(*(TYPE *)0) >= 12)
- #define __va_size(TYPE) ((sizeof(TYPE) + sizeof (long) - 1) / sizeof (long))
-
- #define va_arg(AP,TYPE) \
- __extension__ (*({ \
- register TYPE *__ptr; \
- \
- if (__va_float_p (TYPE) && (AP)->fpr < 8) \
- { \
- __ptr = __VA_FP_REGSAVE (AP, TYPE); \
- (AP)->fpr++; \
- } \
- \
- else if (__va_aggregate_p (TYPE) && (AP)->gpr < 8) \
- { \
- __ptr = * __VA_GP_REGSAVE (AP, TYPE *); \
- (AP)->gpr++; \
- } \
- \
- else if (!__va_float_p (TYPE) && !__va_aggregate_p (TYPE) \
- && (AP)->gpr + __va_size(TYPE) <= 8 \
- && (!__va_longlong_p(TYPE) \
- || (AP)->gpr + __va_size(TYPE) <= 7)) \
- { \
- if (__va_longlong_p(TYPE) && ((AP)->gpr & 1) != 0) \
- (AP)->gpr++; \
- \
- __ptr = __VA_GP_REGSAVE (AP, TYPE); \
- (AP)->gpr += __va_size (TYPE); \
- } \
- \
- else if (!__va_float_p (TYPE) && !__va_aggregate_p (TYPE) \
- && (AP)->gpr < 8) \
- { \
- (AP)->gpr = 8; \
- __ptr = (TYPE *) (void *) (__va_overflow(AP)); \
- __va_overflow(AP) += __va_size (TYPE) * sizeof (long); \
- } \
- \
- else if (__va_aggregate_p (TYPE)) \
- { \
- __ptr = * (TYPE **) (void *) (__va_overflow(AP)); \
- __va_overflow(AP) += sizeof (TYPE *); \
- } \
- else \
- { \
- if (__va_longlong_p(TYPE) && ((long)__va_overflow(AP) & 4) != 0) \
- __va_overflow(AP) += 4; \
- \
- __ptr = (TYPE *) (void *) (__va_overflow(AP)); \
- __va_overflow(AP) += __va_size (TYPE) * sizeof (long); \
- } \
- \
- __ptr; \
- }))
-
- #define va_end(AP) ((void)0)
-
- /* Copy __gnuc_va_list into another variable of this type. */
- #define __va_copy(dest, src) *(dest) = *(src)
-
- #endif /* __VA_PPC_H__ */
- #endif /* defined (_STDARG_H) || defined (_VARARGS_H) */
-
-
- #else
- /* Windows NT */
- /* Define __gnuc_va_list. */
-
- #ifndef __GNUC_VA_LIST
- #define __GNUC_VA_LIST
- typedef char *__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)
-
- #define __va_start_common(AP, LASTARG, FAKE) \
- ((__builtin_saveregs ()), ((AP) = ((char *) &LASTARG) + __va_rounded_size (AP)), 0)
-
- #ifdef _STDARG_H /* stdarg.h support */
-
- /* Calling __builtin_next_arg gives the proper error message if LASTARG is
- not indeed the last argument. */
- #define va_start(AP,LASTARG) \
- (__builtin_saveregs (), \
- (AP) = __builtin_next_arg (LASTARG), \
- 0)
-
- #else /* varargs.h support */
-
- #define va_start(AP) \
- (__builtin_saveregs (), \
- (AP) = __builtin_next_arg (__va_1st_arg) - sizeof (int), \
- 0)
-
- #define va_alist __va_1st_arg
- #define va_dcl register int __va_1st_arg; ...
-
- #endif /* _STDARG_H */
-
- #define __va_rounded_size(TYPE) ((sizeof (TYPE) + 3) & ~3)
- #define __va_align(AP, TYPE) \
- ((((unsigned long)(AP)) + ((sizeof (TYPE) >= 8) ? 7 : 3)) \
- & ~((sizeof (TYPE) >= 8) ? 7 : 3))
-
- #define va_arg(AP,TYPE) \
- ( *(TYPE *)((AP = (char *) (__va_align(AP, TYPE) \
- + __va_rounded_size(TYPE))) \
- - __va_rounded_size(TYPE)))
-
- #define va_end(AP) ((void)0)
-
- /* Copy __gnuc_va_list into another variable of this type. */
- #define __va_copy(dest, src) (dest) = (src)
-
- #endif /* defined (_STDARG_H) || defined (_VARARGS_H) */
- #endif /* Windows NT */
-