OpenSolaris_b135/uts/common/sys/va-sparc.h
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
* Copyright 2000 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* This is just like the default gvarargs.h
except for differences described below. */
/* Define __gnuc_va_list. */
#ifndef __GNUC_VA_LIST
#define __GNUC_VA_LIST
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __sparc_v9__
typedef long long __va_greg;
typedef double __va_freg;
typedef struct {
__va_greg * __va_next_o; /* next available %o* register */
__va_greg * __va_next_o_limit; /* past last available %o* register */
__va_freg * __va_next_fp; /* next available %f* register */
__va_freg * __va_next_fp_limit; /* last available %f* register */
__va_greg * __va_next_stack; /* next extended word on stack */
} __gnuc_va_list;
#else
#ifndef __svr4__
/* This has to be a char * to be compatible with Sun.
i.e., we have to pass a `va_list' to vsprintf. */
typedef char * __gnuc_va_list;
#else
/* This has to be a void * to be compatible with Sun svr4.
i.e., we have to pass a `va_list' to vsprintf. */
typedef void * __gnuc_va_list;
#endif
#endif /* not __sparc_v9__ */
#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)
#ifdef _KERNEL
/*
* The Solaris kernel stdarg style va_start() even though it includes
* <sys/varargs.h>.
*/
#define _STDARG_H
#undef _VARARGS_H
#endif /* _KERNEL */
#ifdef _STDARG_H
#ifdef __sparc_v9__
#define va_start(AP, LASTARG) \
__extension__ \
({ \
AP.__va_next_o = (__va_greg *) __builtin_saveregs (); \
AP.__va_next_o_limit = (AP.__va_next_o + \
(__builtin_args_info (0) < 6 ? 6 - __builtin_args_info (0) : 0)); \
AP.__va_next_fp = (__va_freg *) AP.__va_next_o_limit; \
AP.__va_next_fp_limit = (AP.__va_next_fp + \
(__builtin_args_info (1) < 16 ? (16 - __builtin_args_info (1) + 1) / 2 : 0)); \
AP.__va_next_stack = (__va_greg *) __builtin_next_arg (LASTARG); \
})
#else
/* Call __builtin_next_arg even though we aren't using its value, so that
we can verify that LASTARG is correct. */
#ifdef __GCC_NEW_VARARGS__
#define va_start(AP, LASTARG) \
(__builtin_next_arg (LASTARG), AP = (char *) __builtin_saveregs ())
#else
#define va_start(AP, LASTARG) \
(__builtin_saveregs (), AP = ((char *) __builtin_next_arg (LASTARG)))
#endif
#endif /* not __sparc_v9__ */
#else
#define va_alist __builtin_va_alist
#define va_dcl int __builtin_va_alist;...
#ifdef __sparc_v9__
#ifdef __sparcv9
#define va_start(AP) \
__extension__ \
({ \
AP.__va_next_o = (__va_greg *) __builtin_saveregs (); \
AP.__va_next_o_limit = (AP.__va_next_o + \
(__builtin_args_info (0) < 6 ? 6 - __builtin_args_info (0) : 0)); \
AP.__va_next_fp = (__va_freg *) AP.__va_next_o_limit; \
AP.__va_next_fp_limit = (AP.__va_next_fp + \
(__builtin_args_info (1) < 16 ? (16 - __builtin_args_info (1) + 1) / 2 : 0)); \
/* CYGNUS LOCAL dje/sparc64 */ \
AP.__va_next_stack = (__va_greg *) __builtin_next_arg (__builtin_va_alist) \
- (__builtin_args_info (0) >= 6 || __builtin_args_info (1) >= 16 ? 1 : 0); \
})
#else /* __sparcv9 */
#define va_start(AP) \
__extension__ \
({ \
AP.__va_next_o = (__va_greg *) __builtin_saveregs (); \
AP.__va_next_o_limit = (AP.__va_next_o + \
(__builtin_args_info (0) < 6 ? 6 - __builtin_args_info (0) : 0)); \
AP.__va_next_fp = (__va_freg *) AP.__va_next_o_limit; \
AP.__va_next_fp_limit = (AP.__va_next_fp + \
(__builtin_args_info (1) < 16 ? (16 - __builtin_args_info (1) + 1) / 2 : 0)); \
/* CYGNUS LOCAL dje/sparc64 */ \
AP.__va_next_stack = (__va_greg *) __builtin_next_arg (__builtin_va_alist) \
- (__builtin_args_info (0) >= 6 || __builtin_args_info (1) >= 16 ? 1 : 0); \
})
#endif /* __sparcv9 */
#else
#ifdef __GCC_NEW_VARARGS__
#define va_start(AP) ((AP) = (char *) __builtin_saveregs ())
#else
#define va_start(AP) \
(__builtin_saveregs (), (AP) = ((char *) &__builtin_va_alist))
#endif
#endif /* not __sparc_v9__ */
#endif
#ifndef va_end
void va_end (__gnuc_va_list); /* Defined in libgcc.a */
/* Values returned by __builtin_classify_type. */
enum __va_type_classes {
__no_type_class = -1,
__void_type_class,
__integer_type_class,
__char_type_class,
__enumeral_type_class,
__boolean_type_class,
__pointer_type_class,
__reference_type_class,
__offset_type_class,
__real_type_class,
__complex_type_class,
__function_type_class,
__method_type_class,
__record_type_class,
__union_type_class,
__array_type_class,
__string_type_class,
__set_type_class,
__file_type_class,
__lang_type_class
};
#endif
#define va_end(pvar) ((void)0)
/* Avoid errors if compiling GCC v2 with GCC v1. */
#if __GNUC__ == 1
#define __extension__
#endif
/* RECORD_TYPE args passed using the C calling convention are
passed by invisible reference. ??? RECORD_TYPE args passed
in the stack are made to be word-aligned; for an aggregate that is
not word-aligned, we advance the pointer to the first non-reg slot. */
#ifdef __sparc_v9__
#define va_arg(pvar,TYPE) \
__extension__ \
(*({int __type = __builtin_classify_type (* (TYPE *) 0); \
void * __result; \
if (__type == __real_type_class) /* float? */ \
{ \
__va_freg *__r; \
/* see PASS_IN_REG_P in gcc's sparc.h */ \
if (pvar.__va_next_fp < pvar.__va_next_fp_limit \
&& ((__r = (__va_freg *) (((__va_greg) pvar.__va_next_fp + sizeof (TYPE) - 1) & ~(__va_greg) (sizeof (TYPE) - 1))) \
< pvar.__va_next_fp_limit)) \
{ \
pvar.__va_next_fp = __r + (sizeof (TYPE) + 7) / 8; \
} \
else \
{ \
__r = (__va_freg *) pvar.__va_next_stack; \
pvar.__va_next_stack += (sizeof (TYPE) + 7) / 8; \
} \
__result = __r; \
} \
else if (__type < __record_type_class) /* integer? */ \
{ \
__va_greg *__r; \
if (pvar.__va_next_o < pvar.__va_next_o_limit) \
__r = pvar.__va_next_o++; \
else \
__r = pvar.__va_next_stack++; \
/* adjust for 4 byte ints */ \
__result = (char *) __r + 8 - sizeof (TYPE); \
} \
else /* aggregate object */ \
{ \
void **__r; \
if (pvar.__va_next_o < pvar.__va_next_o_limit) \
__r = (void **) pvar.__va_next_o++; \
else \
__r = (void **) pvar.__va_next_stack++; \
__result = *__r; \
} \
(TYPE *) __result;}))
#else /* not __sparc_v9__ */
#define __va_rounded_size(TYPE) \
(((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
/* We don't declare the union member `d' to have type TYPE
because that would lose in C++ if TYPE has a constructor. */
/* We cast to void * and then to TYPE * because this avoids
a warning about increasing the alignment requirement.
The casts to char * avoid warnings about invalid pointer arithmetic. */
#define va_arg(pvar,TYPE) \
__extension__ \
(*({((__builtin_classify_type (*(TYPE*) 0) >= __record_type_class \
|| (__builtin_classify_type (*(TYPE*) 0) == __real_type_class \
&& sizeof (TYPE) == 16)) \
? ((pvar) = (char *)(pvar) + __va_rounded_size (TYPE *), \
*(TYPE **) (void *) ((char *)(pvar) - __va_rounded_size (TYPE *))) \
: __va_rounded_size (TYPE) == 8 \
? ({ union {char __d[sizeof (TYPE)]; int __i[2];} __u; \
__u.__i[0] = ((int *) (void *) (pvar))[0]; \
__u.__i[1] = ((int *) (void *) (pvar))[1]; \
(pvar) = (char *)(pvar) + 8; \
(TYPE *) (void *) __u.__d; }) \
: ((pvar) = (char *)(pvar) + __va_rounded_size (TYPE), \
((TYPE *) (void *) ((char *)(pvar) - __va_rounded_size (TYPE)))));}))
#endif /* not __sparc_v9__ */
#endif /* defined (_STDARG_H) || defined (_VARARGS_H) */