File-copy from v4.4.100

This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Please refer to that tree for all history prior to this point.

Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/scripts/genksyms/genksyms.h b/scripts/genksyms/genksyms.h
new file mode 100644
index 0000000..3bffdca
--- /dev/null
+++ b/scripts/genksyms/genksyms.h
@@ -0,0 +1,94 @@
+/* Generate kernel symbol version hashes.
+   Copyright 1996, 1997 Linux International.
+
+   New implementation contributed by Richard Henderson <rth@tamu.edu>
+   Based on original work by Bjorn Ekwall <bj0rn@blox.se>
+
+   This file is part of the Linux modutils.
+
+   This program 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 2 of the License, or (at your
+   option) any later version.
+
+   This program 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 this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef MODUTILS_GENKSYMS_H
+#define MODUTILS_GENKSYMS_H 1
+
+#include <stdio.h>
+
+enum symbol_type {
+	SYM_NORMAL, SYM_TYPEDEF, SYM_ENUM, SYM_STRUCT, SYM_UNION,
+	SYM_ENUM_CONST
+};
+
+enum symbol_status {
+	STATUS_UNCHANGED, STATUS_DEFINED, STATUS_MODIFIED
+};
+
+struct string_list {
+	struct string_list *next;
+	enum symbol_type tag;
+	int in_source_file;
+	char *string;
+};
+
+struct symbol {
+	struct symbol *hash_next;
+	const char *name;
+	enum symbol_type type;
+	struct string_list *defn;
+	struct symbol *expansion_trail;
+	struct symbol *visited;
+	int is_extern;
+	int is_declared;
+	enum symbol_status status;
+	int is_override;
+};
+
+typedef struct string_list **yystype;
+#define YYSTYPE yystype
+
+extern int cur_line;
+extern char *cur_filename, *source_file;
+extern int in_source_file;
+
+struct symbol *find_symbol(const char *name, enum symbol_type ns, int exact);
+struct symbol *add_symbol(const char *name, enum symbol_type type,
+			  struct string_list *defn, int is_extern);
+void export_symbol(const char *);
+
+void free_node(struct string_list *list);
+void free_list(struct string_list *s, struct string_list *e);
+struct string_list *copy_node(struct string_list *);
+struct string_list *copy_list_range(struct string_list *start,
+				    struct string_list *end);
+
+int yylex(void);
+int yyparse(void);
+
+void error_with_pos(const char *, ...);
+
+/*----------------------------------------------------------------------*/
+#define xmalloc(size) ({ void *__ptr = malloc(size);		\
+	if(!__ptr && size != 0) {				\
+		fprintf(stderr, "out of memory\n");		\
+		exit(1);					\
+	}							\
+	__ptr; })
+#define xstrdup(str)  ({ char *__str = strdup(str);		\
+	if (!__str) {						\
+		fprintf(stderr, "out of memory\n");		\
+		exit(1);					\
+	}							\
+	__str; })
+
+#endif				/* genksyms.h */