Bring in NetBSD code used in the PowerPC port.

Reviewed by:	obrien, dfr
Obtained from:	NetBSD

1 files changed, 123 insertions, 0 deletions

diff --git a/sys/powerpc/include/stdarg.h b/sys/powerpc/include/stdarg.h
new file mode 100644
index 0000000..4cabdaf
--- /dev/null
+++ b/sys/powerpc/include/stdarg.h
@@ -0,0 +1,123 @@
+/*-
+ * Copyright (c) 2000 Tsubai Masanari.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$NetBSD: stdarg.h,v 1.5 2000/02/27 17:50:21 tsubai Exp $
+ * $FreeBSD$
+ */
+
+#ifndef _POWERPC_STDARG_H_
+#define	_POWERPC_STDARG_H_
+
+#include <machine/ansi.h>
+
+#if 0
+typedef struct {
+	char __gpr;	/* GPR offset */
+	char __fpr;	/* FPR offset */
+/*	char __pad[2]; */
+	char *__stack;	/* args passed on stack */
+	char *__base;	/* args passed by registers (r3-r10, f1-f8) */
+} va_list;
+#endif
+
+typedef _BSD_VA_LIST_	va_list;
+
+#ifdef __lint__
+
+#define	va_start(ap, last)	((ap) = *(va_list *)0)
+#define	va_arg(ap, type)	(*(type *)(void *)&(ap))
+
+#else
+
+#define	va_start(ap, last)						\
+	(__builtin_next_arg(last),					\
+	 (ap).__stack = __va_stack_args,				\
+	 (ap).__base = __va_reg_args,					\
+	 (ap).__gpr = __va_first_gpr,					\
+	 (ap).__fpr = __va_first_fpr)
+
+#define	__va_first_gpr	(__builtin_args_info(0))
+#define	__va_first_fpr	(__builtin_args_info(1) - 32 - 1)
+#define	__va_stack_args							\
+	((char *)__builtin_saveregs() +					\
+	 (__va_first_gpr >= 8 ? __va_first_gpr - 8 : 0) * sizeof(int))
+#define	__va_reg_args							\
+	((char *)__builtin_frame_address(0) + __builtin_args_info(4))
+
+#define	__INTEGER_TYPE_CLASS	1
+#define	__REAL_TYPE_CLASS	8
+#define	__RECORD_TYPE_CLASS	12
+
+#define	__va_longlong(type)						\
+	(__builtin_classify_type(*(type *)0) == __INTEGER_TYPE_CLASS &&	\
+	 sizeof(type) == 8)
+
+#define	__va_double(type)						\
+	(__builtin_classify_type(*(type *)0) == __REAL_TYPE_CLASS)
+
+#define	__va_struct(type)						\
+	(__builtin_classify_type(*(type *)0) >= __RECORD_TYPE_CLASS)
+
+#define	__va_size(type)							\
+	((sizeof(type) + sizeof(int) - 1) / sizeof(int) * sizeof(int))
+
+#define	__va_savedgpr(ap, type)						\
+	((ap).__base + (ap).__gpr * sizeof(int) - sizeof(type))
+
+#define	__va_savedfpr(ap, type)						\
+	((ap).__base + 8 * sizeof(int) + (ap).__fpr * sizeof(double) -	\
+	 sizeof(type))
+
+#define	__va_stack(ap, type)						\
+	((ap).__stack += __va_size(type) +				\
+			(__va_longlong(type) ? (int)(ap).__stack & 4 : 0), \
+	 (ap).__stack - sizeof(type))
+
+#define	__va_gpr(ap, type)						\
+	((ap).__gpr += __va_size(type) / sizeof(int) +			\
+		      (__va_longlong(type) ? (ap).__gpr & 1 : 0),	\
+	 (ap).__gpr <= 8 ? __va_savedgpr(ap, type) : __va_stack(ap, type))
+
+#define	__va_fpr(ap, type)						\
+	((ap).__fpr++,							\
+	 (ap).__fpr <= 8 ? __va_savedfpr(ap, type) : __va_stack(ap, type))
+
+#define	va_arg(ap, type)						\
+	(*(type *)(__va_struct(type) ? (*(void **)__va_gpr(ap, void *)) : \
+		   __va_double(type) ? __va_fpr(ap, type) :		\
+		   __va_gpr(ap, type)))
+
+#endif /* __lint__ */
+
+#define	va_end(ap)	
+
+#if !defined(_ANSI_SOURCE) &&						\
+    (!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) ||		\
+     defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L)
+#define	va_copy(dest, src)						\
+	((dest) = (src))
+#endif
+
+#endif /* _POWERPC_STDARG_H_ */