Annotation of sys/arch/m88k/include/va-m88k.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: va-m88k.h,v 1.9 2006/04/09 03:07:53 deraadt Exp $ */
! 2:
! 3: /* Define __gnuc_va_list. */
! 4:
! 5: #ifndef __GNUC_VA_LIST
! 6: #define __GNUC_VA_LIST
! 7:
! 8: #include <sys/cdefs.h>
! 9:
! 10: typedef struct __va_list_tag {
! 11: unsigned int __va_arg; /* argument number */
! 12: unsigned int *__va_stk; /* start of args passed on stack */
! 13: unsigned int *__va_reg; /* start of args passed in regs */
! 14: } __gnuc_va_list[1];
! 15:
! 16: #endif /* not __GNUC_VA_LIST */
! 17:
! 18: /* If this is for internal libc use, don't define anything but
! 19: __gnuc_va_list. */
! 20: #if defined (_STDARG_H) || defined (_VARARGS_H)
! 21:
! 22: #define __va_start_common(AP,FAKE) \
! 23: __extension__ ({ \
! 24: (AP) = (struct __va_list_tag *)__builtin_alloca(sizeof(__gnuc_va_list)); \
! 25: __builtin_memcpy ((AP), __builtin_saveregs (), sizeof(__gnuc_va_list)); \
! 26: })
! 27:
! 28: #ifdef _STDARG_H /* stdarg.h support */
! 29:
! 30: /* Calling __builtin_next_arg gives the proper error message if LASTARG is
! 31: not indeed the last argument. */
! 32: #ifdef lint
! 33: #define va_start(AP,LASGARG) ((AP) = (AP))
! 34: #else
! 35: #define va_start(AP,LASTARG) \
! 36: (__builtin_next_arg (LASTARG), __va_start_common (AP, 0))
! 37: #endif /* lint */
! 38:
! 39: #else /* varargs.h support */
! 40:
! 41: #ifdef lint
! 42: #define va_start(AP) ((AP) = (AP))
! 43: #else
! 44: #define va_start(AP) __va_start_common (AP, 1)
! 45: #endif /* lint */
! 46:
! 47: #define va_alist __va_1st_arg
! 48: #define va_dcl register int va_alist; ...
! 49:
! 50: #endif /* _STDARG_H */
! 51:
! 52: #define __va_reg_p(TYPE) \
! 53: __extension__({ \
! 54: __builtin_classify_type(*(TYPE *)0) < 12 ? /* record, union */ \
! 55: sizeof(TYPE) <= 8 : \
! 56: sizeof(TYPE) == 4 && __alignof__(*(TYPE *)0) == 4; \
! 57: })
! 58:
! 59: #define __va_size(TYPE) ((sizeof(TYPE) + 3) >> 2)
! 60:
! 61: /* We cast to void * and then to TYPE * because this avoids
! 62: a warning about increasing the alignment requirement. */
! 63: #define va_arg(AP,TYPE) \
! 64: __extension__(*({ \
! 65: register TYPE *__ptr; \
! 66: \
! 67: if ((AP)->__va_arg <= 8 && __va_reg_p(TYPE)) { \
! 68: /* might be in registers */ \
! 69: if (((AP)->__va_arg & 1) != 0 && __alignof__(*(TYPE *)0) > 4) \
! 70: (AP)->__va_arg++; \
! 71: (AP)->__va_arg += __va_size(TYPE); \
! 72: } \
! 73: \
! 74: if ((AP)->__va_arg <= 8 && __va_reg_p(TYPE)) { \
! 75: __ptr = (TYPE *) (void *) ((AP)->__va_reg + \
! 76: (AP)->__va_arg - __va_size(TYPE)); \
! 77: } else { \
! 78: if (((unsigned int)((AP)->__va_stk) & 4) != 0 && \
! 79: __alignof__(*(TYPE *)0) > 4) { \
! 80: (AP)->__va_stk++; \
! 81: } \
! 82: __ptr = (TYPE *) (AP)->__va_stk; \
! 83: (AP)->__va_stk += __va_size(TYPE); \
! 84: } \
! 85: __ptr; \
! 86: }))
! 87:
! 88: #define va_end(AP) ((void)0)
! 89:
! 90: /* Copy __gnuc_va_list into another variable of this type. */
! 91: #define __va_copy(dest, src) \
! 92: __extension__ ({ \
! 93: (dest) = \
! 94: (struct __va_list_tag *)__builtin_alloca(sizeof(__gnuc_va_list)); \
! 95: *(dest) = *(src);\
! 96: })
! 97:
! 98: #if __ISO_C_VISIBLE >= 1999
! 99: #define va_copy(dest, src) __va_copy(dest, src)
! 100: #endif
! 101:
! 102: #endif /* defined (_STDARG_H) || defined (_VARARGS_H) */
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