| /* 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) <= 8)) \ |
| { \ |
| 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 */ |