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va_list: headers
- To: gcc-patches at gcc dot gnu dot org
- Subject: va_list: headers
- From: Richard Henderson <rth at cygnus dot com>
- Date: Sun, 25 Jul 1999 22:52:22 -0700
For the record, and for those port maintainers to whom I'm
going to be passing changes over the next few days, here's
the header file changes.
r~
* ginclude/stdarg.h: Gut for use with new builtins.
* ginclude/varargs.h: Likewise.
Index: ginclude/stdarg.h
===================================================================
RCS file: /egcs/carton/cvsfiles/egcs/gcc/ginclude/stdarg.h,v
retrieving revision 1.9
diff -c -p -d -r1.9 stdarg.h
*** stdarg.h 1999/05/08 01:52:35 1.9
--- stdarg.h 1999/07/26 05:49:16
***************
*** 1,4 ****
--- 1,5 ----
/* stdarg.h for GNU.
+
Note that the type used in va_arg is supposed to match the
actual type **after default promotions**.
Thus, va_arg (..., short) is not valid. */
***************
*** 11,145 ****
#endif /* not __need___va_list */
#undef __need___va_list
- #ifdef __clipper__
- #include "va-clipper.h"
- #else
- #ifdef __m88k__
- #include "va-m88k.h"
- #else
- #ifdef __i860__
- #include "va-i860.h"
- #else
- #ifdef __hppa__
- #include "va-pa.h"
- #else
- #ifdef __mips__
- #include "va-mips.h"
- #else
- #ifdef __sparc__
- #include "va-sparc.h"
- #else
- #ifdef __i960__
- #include "va-i960.h"
- #else
- #ifdef __alpha__
- #include "va-alpha.h"
- #else
- #if defined (__H8300__) || defined (__H8300H__) || defined (__H8300S__)
- #include "va-h8300.h"
- #else
- #if defined (__PPC__) && (defined (_CALL_SYSV) || defined (_WIN32))
- #include "va-ppc.h"
- #else
- #ifdef __arc__
- #include "va-arc.h"
- #else
- #ifdef __M32R__
- #include "va-m32r.h"
- #else
- #ifdef __sh__
- #include "va-sh.h"
- #else
- #ifdef __mn10300__
- #include "va-mn10300.h"
- #else
- #ifdef __mn10200__
- #include "va-mn10200.h"
- #else
- #ifdef __v850__
- #include "va-v850.h"
- #else
- #if defined (_TMS320C4x) || defined (_TMS320C3x)
- #include <va-c4x.h>
- #else
-
/* Define __gnuc_va_list. */
#ifndef __GNUC_VA_LIST
#define __GNUC_VA_LIST
! #if defined(__svr4__) || defined(_AIX) || defined(_M_UNIX) || defined(__NetBSD__)
! typedef char *__gnuc_va_list;
! #else
! typedef void *__gnuc_va_list;
! #endif
#endif
/* Define the standard macros for the user,
if this invocation was from the user program. */
#ifdef _STDARG_H
-
- /* Amount of space required in an argument list for an arg of type TYPE.
- TYPE may alternatively be an expression whose type is used. */
! #if defined(sysV68)
! #define __va_rounded_size(TYPE) \
! (((sizeof (TYPE) + sizeof (short) - 1) / sizeof (short)) * sizeof (short))
! #elif defined(_AIX)
! #define __va_rounded_size(TYPE) \
! (((sizeof (TYPE) + sizeof (long) - 1) / sizeof (long)) * sizeof (long))
! #else
! #define __va_rounded_size(TYPE) \
! (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
! #endif
!
! #define va_start(AP, LASTARG) \
! (AP = ((__gnuc_va_list) __builtin_next_arg (LASTARG)))
!
! #undef va_end
! void va_end (__gnuc_va_list); /* Defined in libgcc.a */
! #define va_end(AP) ((void)0)
!
! /* We cast to void * and then to TYPE * because this avoids
! a warning about increasing the alignment requirement. */
!
! #if (defined (__arm__) && ! defined (__ARMEB__)) || defined (__i386__) || defined (__i860__) || defined (__ns32000__) || defined (__vax__)
! /* This is for little-endian machines; small args are padded upward. */
! #define va_arg(AP, TYPE) \
! (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)), \
! *((TYPE *) (void *) ((char *) (AP) - __va_rounded_size (TYPE))))
! #else /* big-endian */
! /* This is for big-endian machines; small args are padded downward. */
! #define va_arg(AP, TYPE) \
! (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)), \
! *((TYPE *) (void *) ((char *) (AP) \
! - ((sizeof (TYPE) < __va_rounded_size (char) \
! ? sizeof (TYPE) : __va_rounded_size (TYPE))))))
! #endif /* big-endian */
!
! /* Copy __gnuc_va_list into another variable of this type. */
! #define __va_copy(dest, src) (dest) = (src)
!
! #endif /* _STDARG_H */
- #endif /* not TMS320C3x or TMS320C4x */
- #endif /* not v850 */
- #endif /* not mn10200 */
- #endif /* not mn10300 */
- #endif /* not sh */
- #endif /* not m32r */
- #endif /* not arc */
- #endif /* not powerpc with V.4 calling sequence */
- #endif /* not h8300 */
- #endif /* not alpha */
- #endif /* not i960 */
- #endif /* not sparc */
- #endif /* not mips */
- #endif /* not hppa */
- #endif /* not i860 */
- #endif /* not m88k */
- #endif /* not clipper */
- #ifdef _STDARG_H
/* Define va_list, if desired, from __gnuc_va_list. */
/* We deliberately do not define va_list when called from
stdio.h, because ANSI C says that stdio.h is not supposed to define
--- 12,34 ----
#endif /* not __need___va_list */
#undef __need___va_list
/* Define __gnuc_va_list. */
#ifndef __GNUC_VA_LIST
#define __GNUC_VA_LIST
! typedef __builtin_va_list __gnuc_va_list;
#endif
/* Define the standard macros for the user,
if this invocation was from the user program. */
#ifdef _STDARG_H
! #define va_start(v,l) __builtin_stdarg_start(&(v),l)
! #define va_end __builtin_va_end
! #define va_arg __builtin_va_arg
! #define va_copy(d,s) __builtin_va_copy(&(d),(s))
/* Define va_list, if desired, from __gnuc_va_list. */
/* We deliberately do not define va_list when called from
stdio.h, because ANSI C says that stdio.h is not supposed to define
Index: ginclude/varargs.h
===================================================================
RCS file: /egcs/carton/cvsfiles/egcs/gcc/ginclude/varargs.h,v
retrieving revision 1.11
diff -c -p -d -r1.11 varargs.h
*** varargs.h 1999/07/07 00:18:05 1.11
--- varargs.h 1999/07/26 05:49:16
***************
*** 3,66 ****
#ifndef _VARARGS_H
#define _VARARGS_H
- #ifdef __sparc__
- #include "va-sparc.h"
- #else
- #ifdef __spur__
- #include "va-spur.h"
- #else
- #ifdef __mips__
- #include "va-mips.h"
- #else
- #ifdef __i860__
- #include "va-i860.h"
- #else
- #ifdef __pyr__
- #include "va-pyr.h"
- #else
- #ifdef __clipper__
- #include "va-clipper.h"
- #else
- #ifdef __m88k__
- #include "va-m88k.h"
- #else
- #if defined(__hppa__) || defined(hp800)
- #include "va-pa.h"
- #else
- #ifdef __i960__
- #include "va-i960.h"
- #else
- #ifdef __alpha__
- #include "va-alpha.h"
- #else
- #if defined (__H8300__) || defined (__H8300H__) || defined (__H8300S__)
- #include "va-h8300.h"
- #else
- #if defined (__PPC__) && (defined (_CALL_SYSV) || defined (_WIN32))
- #include "va-ppc.h"
- #else
- #ifdef __arc__
- #include "va-arc.h"
- #else
- #ifdef __M32R__
- #include "va-m32r.h"
- #else
- #ifdef __sh__
- #include "va-sh.h"
- #else
- #ifdef __mn10300__
- #include "va-mn10300.h"
- #else
- #ifdef __mn10200__
- #include "va-mn10200.h"
- #else
- #ifdef __v850__
- #include "va-v850.h"
- #else
- #if defined (_TMS320C4x) || defined (_TMS320C3x)
- #include <va-c4x.h>
- #else
-
#ifdef __NeXT__
/* On Next, erase any vestiges of stdarg.h. */
--- 3,8 ----
***************
*** 75,165 ****
#undef va_list
#undef va_start
#undef va_end
- #undef __va_rounded_size
#undef va_arg
#endif /* __NeXT__ */
- /* In GCC version 2, we want an ellipsis at the end of the declaration
- of the argument list. GCC version 1 can't parse it. */
-
- #if __GNUC__ > 1
- #define __va_ellipsis ...
- #else
- #define __va_ellipsis
- #endif
-
/* These macros implement traditional (non-ANSI) varargs
for GNU C. */
#define va_alist __builtin_va_alist
! /* The ... causes current_function_varargs to be set in cc1. */
/* ??? We don't process attributes correctly in K&R argument context. */
typedef int __builtin_va_alist_t __attribute__((__mode__(__word__)));
- #define va_dcl __builtin_va_alist_t __builtin_va_alist; __va_ellipsis
! /* Define __gnuc_va_list, just as in gstdarg.h. */
#ifndef __GNUC_VA_LIST
#define __GNUC_VA_LIST
! #if defined(__svr4__) || defined(_AIX) || defined(_M_UNIX)
! typedef char *__gnuc_va_list;
! #else
! typedef void *__gnuc_va_list;
! #endif
! #endif
!
! #define va_start(AP) AP=(char *) &__builtin_va_alist
!
! #define va_end(AP) ((void)0)
!
! #if defined(sysV68)
! #define __va_rounded_size(TYPE) \
! (((sizeof (TYPE) + sizeof (short) - 1) / sizeof (short)) * sizeof (short))
! #elif defined(_AIX)
! #define __va_rounded_size(TYPE) \
! (((sizeof (TYPE) + sizeof (long) - 1) / sizeof (long)) * sizeof (long))
! #else
! #define __va_rounded_size(TYPE) \
! (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
#endif
-
- #if (defined (__arm__) && ! defined (__ARMEB__)) || defined (__i386__) || defined (__i860__) || defined (__ns32000__) || defined (__vax__)
- /* This is for little-endian machines; small args are padded upward. */
- #define va_arg(AP, TYPE) \
- (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)), \
- *((TYPE *) (void *) ((char *) (AP) - __va_rounded_size (TYPE))))
- #else /* big-endian */
- /* This is for big-endian machines; small args are padded downward. */
- #define va_arg(AP, TYPE) \
- (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)), \
- *((TYPE *) (void *) ((char *) (AP) \
- - ((sizeof (TYPE) < __va_rounded_size (char) \
- ? sizeof (TYPE) : __va_rounded_size (TYPE))))))
- #endif /* big-endian */
-
- /* Copy __gnuc_va_list into another variable of this type. */
- #define __va_copy(dest, src) (dest) = (src)
! #endif /* not TMS320C3x or TMS320C4x */
! #endif /* not v850 */
! #endif /* not mn10200 */
! #endif /* not mn10300 */
! #endif /* not sh */
! #endif /* not m32r */
! #endif /* not arc */
! #endif /* not powerpc with V.4 calling sequence */
! #endif /* not h8300 */
! #endif /* not alpha */
! #endif /* not i960 */
! #endif /* not hppa */
! #endif /* not m88k */
! #endif /* not clipper */
! #endif /* not pyr */
! #endif /* not i860 */
! #endif /* not mips */
! #endif /* not spur */
! #endif /* not sparc */
! #endif /* not _VARARGS_H */
/* Define va_list from __gnuc_va_list. */
--- 17,48 ----
#undef va_list
#undef va_start
#undef va_end
#undef va_arg
#endif /* __NeXT__ */
/* These macros implement traditional (non-ANSI) varargs
for GNU C. */
#define va_alist __builtin_va_alist
!
/* ??? We don't process attributes correctly in K&R argument context. */
typedef int __builtin_va_alist_t __attribute__((__mode__(__word__)));
! /* ??? It would be nice to get rid of the ellipsis here. It causes
! current_function_varargs to be set in cc1. */
! #define va_dcl __builtin_va_alist_t __builtin_va_alist; ...
+ /* Define __gnuc_va_list, just as in stdarg.h. */
+
#ifndef __GNUC_VA_LIST
#define __GNUC_VA_LIST
! typedef __builtin_va_list __gnuc_va_list;
#endif
! #define va_start(v) __builtin_varargs_start(&(v))
! #define va_end __builtin_va_end
! #define va_arg __builtin_va_arg
! #define __va_copy(d,s) __builtin_va_copy(&(d),(s))
/* Define va_list from __gnuc_va_list. */