65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
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/* CYGNUS LOCAL entire file/d30v */
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/* GNU C stdarg/varargs support for the D30V */
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/* Define __gnuc_va_list. */
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#ifndef __GNUC_VA_LIST
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#define __GNUC_VA_LIST
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typedef struct __va_list_tag {
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int *__va_arg_ptr; /* start of the register save area */
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int __va_arg_num; /* argument number */
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} __va_list[1], __gnuc_va_list[1];
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#endif /* not __GNUC_VA_LIST */
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/* If this is for internal libc use, don't define anything but
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__gnuc_va_list. */
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#if defined (_STDARG_H) || defined (_VARARGS_H)
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/* Common code for va_start for both varargs and stdarg. This depends
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on the format of the CUMULATIVE_ARGS type. On the d30v, we use just
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a single word that is the register number. */
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#define __va_start_common(AP) \
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__extension__ ({ \
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(AP)->__va_arg_ptr = (int *) __builtin_saveregs (); \
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(AP)->__va_arg_num = __builtin_args_info (0) - 2 /* first arg # */; \
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(void)0; \
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})
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#ifdef _STDARG_H /* stdarg.h support */
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/* Calling __builtin_next_arg gives the proper error message if LASTARG is
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not indeed the last argument. */
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#define va_start(AP,LASTARG) \
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(__builtin_next_arg (LASTARG), __va_start_common (AP))
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#else /* varargs.h support */
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#define va_start(AP) __va_start_common (AP)
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#define va_alist __builtin_va_alist
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#define va_dcl register int va_alist; ...
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#endif /* _STDARG_H */
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/* Nothing needs to be done to end varargs/stdarg processing */
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#define va_end(AP) ((void)0)
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#define va_arg(AP,TYPE) \
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__extension__ (*({ \
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register TYPE *__ptr; \
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\
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if (sizeof (TYPE) > 4 && ((AP)->__va_arg_num & 1) != 0) \
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(AP)->__va_arg_num++; \
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\
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__ptr = (TYPE *)(((char *)(void *) \
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((AP)->__va_arg_ptr + (AP)->__va_arg_num))); \
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\
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if (sizeof (TYPE) < 4) \
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__ptr = (void*)__ptr + 4 - sizeof (TYPE); \
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(AP)->__va_arg_num += (sizeof (TYPE) + 3) / 4; \
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__ptr; \
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}))
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#endif /* defined (_STDARG_H) || defined (_VARARGS_H) */
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/* END CYGNUS LOCAL */
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