Initial revision

1 files changed, 47 insertions, 0 deletions

diff --git a/include/stdarg.h b/include/stdarg.h
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+ /*
+  * @(#) stdarg.h 1.2 91/11/30 21:10:39
+  * 
+  * Sample stdarg.h file for use with the unproto filter.
+  * 
+  * This file serves two purposes.
+  * 
+  * 1 - As an include file for use with ANSI-style C source that implements
+  * variadic functions.
+  * 
+  * 2 - To configure the unproto filter itself. If the _VA_ALIST_ macro is
+  * defined, its value will appear in the place of the "..." in argument
+  * lists of variadic function *definitions* (not declarations).
+  * 
+  * Compilers that pass arguments via the stack can use the default code at the
+  * end of this file (this usually applies for the VAX, MC68k and 80*86
+  * architectures).
+  * 
+  * RISC-based systems often need special tricks. An example of the latter is
+  * given for the SPARC architecture. Read your /usr/include/varargs.h for
+  * more information.
+  * 
+  * You can use the varargs.c program provided with the unproto package to
+  * verify that the stdarg.h file has been set up correctly.
+  */
+
+#ifndef __STDARG_H
+#define __STDARG_H
+
+#ifdef sparc
+#  define _VA_ALIST_		"__builtin_va_alist"
+   typedef char *va_list;
+#  define va_start(ap, p)	(ap = (char *) &__builtin_va_alist)
+#  define va_arg(ap, type)	((type *) __builtin_va_arg_incr((type *) ap))[0]
+#  define va_end(ap)
+#else /* vax, mc68k, 80*86 */
+   typedef char *va_list;
+#  define va_start(ap, p)	(ap = (char *) (&(p)+1))
+#  define va_arg(ap, type)	((type *) (ap += sizeof(type)))[-1]
+#  define va_end(ap)
+#endif
+
+#endif /* __STDARG_H */
+
+#if __FIRST_ARG_IN_AX__
+#error First arg is in a register, stdarg.h cannot take its address
+#endif