[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit

Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/build/uClibc/include/alloca.h b/ap/build/uClibc/include/alloca.h
new file mode 100644
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+++ b/ap/build/uClibc/include/alloca.h
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+/* Copyright (C) 1992, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef	_ALLOCA_H
+#define	_ALLOCA_H	1
+
+#include <features.h>
+
+#define	__need_size_t
+#include <stddef.h>
+
+__BEGIN_DECLS
+
+/* Remove any previous definitions.  */
+#undef	alloca
+
+/* Allocate a block that will be freed when the calling function exits.  */
+extern void *alloca (size_t __size) __THROW;
+
+#ifdef	__GNUC__
+# define alloca(size)	__builtin_alloca (size)
+#endif /* GCC.  */
+
+#ifdef _LIBC
+# define __MAX_ALLOCA_CUTOFF	65536
+
+# include <bits/stackinfo.h>
+# ifdef _STACK_GROWS_DOWN
+#  define extend_alloca(buf, len, newlen) \
+   (__typeof (buf)) ({ size_t __newlen = (newlen);			      \
+		      char *__newbuf = alloca (__newlen);		      \
+		      if (__newbuf + __newlen == (char *) buf)		      \
+			len += __newlen;				      \
+		      else						      \
+			len = __newlen;					      \
+		      __newbuf; })
+# elif defined _STACK_GROWS_UP
+#  define extend_alloca(buf, len, newlen) \
+   (__typeof (buf)) ({ size_t __newlen = (newlen);			      \
+		      char *__newbuf = alloca (__newlen);		      \
+		      char *__buf = (buf);				      \
+		      if (__buf + __newlen == __newbuf)			      \
+			{						      \
+			  len += __newlen;				      \
+			  __newbuf = __buf;				      \
+			}						      \
+		      else						      \
+			len = __newlen;					      \
+		      __newbuf; })
+# else
+#  error unknown stack
+#  define extend_alloca(buf, len, newlen) \
+   alloca (((len) = (newlen)))
+# endif
+
+extern int __libc_alloca_cutoff (size_t size);
+#endif
+
+__END_DECLS
+
+#endif /* alloca.h */