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1.1 root 1: /* stdarg.h for GNU.
2: Note that the type used in va_arg is supposed to match the
3: actual type **after default promotions**.
4: Thus, va_arg (..., short) is not valid. */
5:
6: #ifndef _STDARG_H
1.1.1.4 ! root 7: #ifndef _ANSI_STDARG_H_
! 8: #ifndef __need___va_list
1.1 root 9: #define _STDARG_H
1.1.1.4 ! root 10: #define _ANSI_STDARG_H_
! 11: #endif /* not __need___va_list */
! 12: #undef __need___va_list
1.1 root 13:
14: #ifndef __GNUC__
1.1.1.4 ! root 15: /* Use the system's macros with the system's compiler.
! 16: This is relevant only when building GCC with some other compiler. */
1.1 root 17: #include <stdarg.h>
18: #else
19: #ifdef __m88k__
1.1.1.4 ! root 20: #include <va-m88k.h>
1.1 root 21: #else
22: #ifdef __i860__
1.1.1.4 ! root 23: #include <va-i860.h>
1.1 root 24: #else
1.1.1.4 ! root 25: #ifdef __hppa__
! 26: #include <va-pa.h>
1.1 root 27: #else
28: #ifdef __mips__
1.1.1.4 ! root 29: #include <va-mips.h>
1.1 root 30: #else
1.1.1.2 root 31: #ifdef __sparc__
1.1.1.4 ! root 32: #include <va-sparc.h>
1.1.1.2 root 33: #else
1.1.1.3 root 34: #ifdef __i960__
1.1.1.4 ! root 35: #include <va-i960.h>
! 36: #else
! 37: #ifdef __alpha__
! 38: #include <va-alpha.h>
1.1.1.3 root 39: #else
1.1 root 40:
1.1.1.4 ! root 41: /* Define __gnuc_va_list. */
1.1 root 42:
1.1.1.4 ! root 43: #ifndef __GNUC_VA_LIST
! 44: #define __GNUC_VA_LIST
! 45: #if defined(__svr4__) || defined(_AIX) || defined(_M_UNIX)
! 46: typedef char *__gnuc_va_list;
1.1.1.3 root 47: #else
1.1.1.4 ! root 48: typedef void *__gnuc_va_list;
1.1.1.3 root 49: #endif
1.1.1.4 ! root 50: #endif
! 51:
! 52: /* Define the standard macros for the user,
! 53: if this invocation was from the user program. */
! 54: #ifdef _STDARG_H
1.1 root 55:
56: /* Amount of space required in an argument list for an arg of type TYPE.
57: TYPE may alternatively be an expression whose type is used. */
58:
59: #define __va_rounded_size(TYPE) \
60: (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
61:
62: #define va_start(AP, LASTARG) \
1.1.1.4 ! root 63: (AP = ((__gnuc_va_list) __builtin_next_arg ()))
1.1 root 64:
1.1.1.4 ! root 65: #undef va_end
! 66: void va_end (__gnuc_va_list); /* Defined in libgcc.a */
1.1 root 67: #define va_end(AP)
68:
1.1.1.4 ! root 69: /* We cast to void * and then to TYPE * because this avoids
! 70: a warning about increasing the alignment requirement. */
! 71:
! 72: #if defined (__arm__) || defined (__i386__) || defined (__ns32000__) || defined (__vax__)
! 73: /* This is for little-endian machines; small args are padded upward. */
1.1 root 74: #define va_arg(AP, TYPE) \
1.1.1.4 ! root 75: (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)), \
! 76: *((TYPE *) (void *) ((char *) (AP) - __va_rounded_size (TYPE))))
! 77: #else /* big-endian */
! 78: /* This is for big-endian machines; small args are padded downward. */
! 79: #define va_arg(AP, TYPE) \
! 80: (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)), \
! 81: *((TYPE *) (void *) ((char *) (AP) - ((sizeof (TYPE) < 4 \
! 82: ? sizeof (TYPE) \
! 83: : __va_rounded_size (TYPE))))))
! 84: #endif /* big-endian */
! 85: #endif /* _STDARG_H */
1.1 root 86:
1.1.1.4 ! root 87: #endif /* not alpha */
1.1.1.3 root 88: #endif /* not i960 */
1.1.1.2 root 89: #endif /* not sparc */
1.1 root 90: #endif /* not mips */
1.1.1.4 ! root 91: #endif /* not hppa */
1.1 root 92: #endif /* not i860 */
93: #endif /* not m88k */
1.1.1.4 ! root 94:
! 95: #ifdef _STDARG_H
! 96: /* Define va_list, if desired, from __gnuc_va_list. */
! 97: /* We deliberately do not define va_list when called from
! 98: stdio.h, because ANSI C says that stdio.h is not supposed to define
! 99: va_list. stdio.h needs to have access to that data type,
! 100: but must not use that name. It should use the name __gnuc_va_list,
! 101: which is safe because it is reserved for the implementation. */
! 102:
! 103: #ifdef _HIDDEN_VA_LIST /* On OSF1, this means varargs.h is "half-loaded". */
! 104: #undef _VA_LIST
! 105: #endif
! 106:
! 107: #ifdef _BSD_VA_LIST
! 108: #undef _BSD_VA_LIST
! 109: #endif
! 110:
! 111: #ifdef __SVR4_2__
! 112: /* SVR4.2 uses _VA_LIST for an internal alias for va_list,
! 113: so we must avoid testing it and setting it here. */
! 114: #ifndef _VA_LIST_
! 115: #define _VA_LIST_
! 116: typedef __gnuc_va_list va_list;
! 117: #endif /* _VA_LIST_ */
! 118: #else /* not __SVR4_2__ */
! 119:
! 120: /* The macro _VA_LIST_ is the same thing used by this file in Ultrix.
! 121: But on BSD NET2 we must not test or define or undef it.
! 122: (Note that the comments in NET 2's ansi.h
! 123: are incorrect for _VA_LIST_--see stdio.h!) */
! 124: #if !defined (_VA_LIST_) || defined (__BSD_NET2__) || defined (____386BSD____)
! 125: /* The macro _VA_LIST is used in SCO Unix 3.2. */
! 126: #ifndef _VA_LIST
! 127: #if !(defined (__BSD_NET2__) || defined (____386BSD____))
! 128: #define _VA_LIST_
! 129: #endif
! 130: #define _VA_LIST
! 131: typedef __gnuc_va_list va_list;
! 132: #endif /* not _VA_LIST */
! 133: #endif /* not _VA_LIST_ */
! 134:
! 135: #endif /* not __SVR4_2__ */
! 136:
1.1 root 137: #endif /* _STDARG_H */
1.1.1.4 ! root 138:
! 139: #endif /* __GNUC__ */
! 140: #endif /* not _ANSI_STDARG_H_ */
! 141: #endif /* not _STDARG_H */
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