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diff --git a/binutils-2.25/gas/sb.h b/binutils-2.25/gas/sb.h
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+/* sb.h - header file for string buffer manipulation routines
+   Copyright 1994, 1995, 2000, 2003, 2005, 2006, 2007, 2012
+   Free Software Foundation, Inc.
+
+   Written by Steve and Judy Chamberlain of Cygnus Support,
+      sac@cygnus.com
+
+   This file is part of GAS, the GNU Assembler.
+
+   GAS is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   GAS 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GAS; see the file COPYING.  If not, write to the Free
+   Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+#ifndef SB_H
+
+#define SB_H
+
+/* String blocks
+
+   I had a couple of choices when deciding upon this data structure.
+   gas uses null terminated strings for all its internal work.  This
+   often means that parts of the program that want to examine
+   substrings have to manipulate the data in the string to do the
+   right thing (a common operation is to single out a bit of text by
+   saving away the character after it, nulling it out, operating on
+   the substring and then replacing the character which was under the
+   null).  This is a pain and I remember a load of problems that I had with
+   code in gas which almost got this right.  Also, it's harder to grow and
+   allocate null terminated strings efficiently.
+
+   Obstacks provide all the functionality needed, but are too
+   complicated, hence the sb.
+
+   An sb is allocated by the caller.  */
+
+typedef struct sb
+{
+  char *ptr;			/* Points to the current block.  */
+  size_t len;			/* How much is used.  */
+  size_t max;			/* The maximum length.  */
+}
+sb;
+
+extern void sb_new (sb *);
+extern void sb_build (sb *, size_t);
+extern void sb_kill (sb *);
+extern void sb_add_sb (sb *, sb *);
+extern void sb_scrub_and_add_sb (sb *, sb *);
+extern void sb_reset (sb *);
+extern void sb_add_char (sb *, size_t);
+extern void sb_add_string (sb *, const char *);
+extern void sb_add_buffer (sb *, const char *, size_t);
+extern char *sb_terminate (sb *);
+extern size_t sb_skip_white (size_t, sb *);
+extern size_t sb_skip_comma (size_t, sb *);
+
+/* Actually in input-scrub.c.  */
+extern void input_scrub_include_sb (sb *, char *, int);
+
+#endif /* SB_H */