scripts/genksyms/genksyms.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /* Generate kernel symbol version hashes.
   3    Copyright 1996, 1997 Linux International.
   4
   5    New implementation contributed by Richard Henderson <rth@tamu.edu>
   6    Based on original work by Bjorn Ekwall <bj0rn@blox.se>
   7
   8    This file is part of the Linux modutils.
   9
  10  */
  11
  12 #ifndef MODUTILS_GENKSYMS_H
  13 #define MODUTILS_GENKSYMS_H 1
  14
  15 #include <stdio.h>
  16
  17 enum symbol_type {
  18         SYM_NORMAL, SYM_TYPEDEF, SYM_ENUM, SYM_STRUCT, SYM_UNION,
  19         SYM_ENUM_CONST
  20 };
  21
  22 enum symbol_status {
  23         STATUS_UNCHANGED, STATUS_DEFINED, STATUS_MODIFIED
  24 };
  25
  26 struct string_list {
  27         struct string_list *next;
  28         enum symbol_type tag;
  29         int in_source_file;
  30         char *string;
  31 };
  32
  33 struct symbol {
  34         struct symbol *hash_next;
  35         const char *name;
  36         enum symbol_type type;
  37         struct string_list *defn;
  38         struct symbol *expansion_trail;
  39         struct symbol *visited;
  40         int is_extern;
  41         int is_declared;
  42         enum symbol_status status;
  43         int is_override;
  44 };
  45
  46 typedef struct string_list **yystype;
  47 #define YYSTYPE yystype
  48
  49 extern int cur_line;
  50 extern char *cur_filename, *source_file;
  51 extern int in_source_file;
  52
  53 struct symbol *find_symbol(const char *name, enum symbol_type ns, int exact);
  54 struct symbol *add_symbol(const char *name, enum symbol_type type,
  55                           struct string_list *defn, int is_extern);
  56 void export_symbol(const char *);
  57
  58 void free_node(struct string_list *list);
  59 void free_list(struct string_list *s, struct string_list *e);
  60 struct string_list *copy_node(struct string_list *);
  61 struct string_list *copy_list_range(struct string_list *start,
  62                                     struct string_list *end);
  63
  64 int yylex(void);
  65 int yyparse(void);
  66
  67 void error_with_pos(const char *, ...) __attribute__ ((format(printf, 1, 2)));
  68
  69 /*----------------------------------------------------------------------*/
  70 #define xmalloc(size) ({ void *__ptr = malloc(size);            \
  71         if(!__ptr && size != 0) {                               \
  72                 fprintf(stderr, "out of memory\n");             \
  73                 exit(1);                                        \
  74         }                                                       \
  75         __ptr; })
  76 #define xstrdup(str)  ({ char *__str = strdup(str);             \
  77         if (!__str) {                                           \
  78                 fprintf(stderr, "out of memory\n");             \
  79                 exit(1);                                        \
  80         }                                                       \
  81         __str; })
  82
  83 #endif                          /* genksyms.h */