scripts/genksyms/genksyms.h

0001 /* SPDX-License-Identifier: GPL-2.0-or-later */
0002 /* Generate kernel symbol version hashes.
0003    Copyright 1996, 1997 Linux International.
0004
0005    New implementation contributed by Richard Henderson <rth@tamu.edu>
0006    Based on original work by Bjorn Ekwall <bj0rn@blox.se>
0007
0008    This file is part of the Linux modutils.
0009
0010  */
0011
0012 #ifndef MODUTILS_GENKSYMS_H
0013 #define MODUTILS_GENKSYMS_H 1
0014
0015 #include <stdio.h>
0016
0017 enum symbol_type {
0018     SYM_NORMAL, SYM_TYPEDEF, SYM_ENUM, SYM_STRUCT, SYM_UNION,
0019     SYM_ENUM_CONST
0020 };
0021
0022 enum symbol_status {
0023     STATUS_UNCHANGED, STATUS_DEFINED, STATUS_MODIFIED
0024 };
0025
0026 struct string_list {
0027     struct string_list *next;
0028     enum symbol_type tag;
0029     int in_source_file;
0030     char *string;
0031 };
0032
0033 struct symbol {
0034     struct symbol *hash_next;
0035     const char *name;
0036     enum symbol_type type;
0037     struct string_list *defn;
0038     struct symbol *expansion_trail;
0039     struct symbol *visited;
0040     int is_extern;
0041     int is_declared;
0042     enum symbol_status status;
0043     int is_override;
0044 };
0045
0046 typedef struct string_list **yystype;
0047 #define YYSTYPE yystype
0048
0049 extern int cur_line;
0050 extern char *cur_filename;
0051 extern int in_source_file;
0052
0053 struct symbol *find_symbol(const char *name, enum symbol_type ns, int exact);
0054 struct symbol *add_symbol(const char *name, enum symbol_type type,
0055               struct string_list *defn, int is_extern);
0056 void export_symbol(const char *);
0057
0058 void free_node(struct string_list *list);
0059 void free_list(struct string_list *s, struct string_list *e);
0060 struct string_list *copy_node(struct string_list *);
0061 struct string_list *copy_list_range(struct string_list *start,
0062                     struct string_list *end);
0063
0064 int yylex(void);
0065 int yyparse(void);
0066
0067 void error_with_pos(const char *, ...) __attribute__ ((format(printf, 1, 2)));
0068
0069 /*----------------------------------------------------------------------*/
0070 #define xmalloc(size) ({ void *__ptr = malloc(size);        \
0071     if(!__ptr && size != 0) {               \
0072         fprintf(stderr, "out of memory\n");     \
0073         exit(1);                    \
0074     }                           \
0075     __ptr; })
0076 #define xstrdup(str)  ({ char *__str = strdup(str);     \
0077     if (!__str) {                       \
0078         fprintf(stderr, "out of memory\n");     \
0079         exit(1);                    \
0080     }                           \
0081     __str; })
0082
0083 #endif              /* genksyms.h */