scripts/genksyms/genksyms.h

   1 /* Generate kernel symbol version hashes.
   2    Copyright 1996, 1997 Linux International.
   3
   4    New implementation contributed by Richard Henderson <rth@tamu.edu>
   5    Based on original work by Bjorn Ekwall <bj0rn@blox.se>
   6
   7    This file is part of the Linux modutils.
   8
   9    This program is free software; you can redistribute it and/or modify it
  10    under the terms of the GNU General Public License as published by the
  11    Free Software Foundation; either version 2 of the License, or (at your
  12    option) any later version.
  13
  14    This program is distributed in the hope that it will be useful, but
  15    WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17    General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software Foundation,
  21    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  22
  23 #ifndef MODUTILS_GENKSYMS_H
  24 #define MODUTILS_GENKSYMS_H 1
  25
  26 #include <stdio.h>
  27
  28 enum symbol_type {
  29         SYM_NORMAL, SYM_TYPEDEF, SYM_ENUM, SYM_STRUCT, SYM_UNION,
  30         SYM_ENUM_CONST
  31 };
  32
  33 enum symbol_status {
  34         STATUS_UNCHANGED, STATUS_DEFINED, STATUS_MODIFIED
  35 };
  36
  37 struct string_list {
  38         struct string_list *next;
  39         enum symbol_type tag;
  40         int in_source_file;
  41         char *string;
  42 };
  43
  44 struct symbol {
  45         struct symbol *hash_next;
  46         const char *name;
  47         enum symbol_type type;
  48         struct string_list *defn;
  49         struct symbol *expansion_trail;
  50         struct symbol *visited;
  51         int is_extern;
  52         int is_declared;
  53         enum symbol_status status;
  54         int is_override;
  55 };
  56
  57 typedef struct string_list **yystype;
  58 #define YYSTYPE yystype
  59
  60 extern int cur_line;
  61 extern char *cur_filename, *source_file;
  62 extern int in_source_file;
  63
  64 struct symbol *find_symbol(const char *name, enum symbol_type ns, int exact);
  65 struct symbol *add_symbol(const char *name, enum symbol_type type,
  66                           struct string_list *defn, int is_extern);
  67 void export_symbol(const char *);
  68
  69 void free_node(struct string_list *list);
  70 void free_list(struct string_list *s, struct string_list *e);
  71 struct string_list *copy_node(struct string_list *);
  72 struct string_list *copy_list_range(struct string_list *start,
  73                                     struct string_list *end);
  74
  75 int yylex(void);
  76 int yyparse(void);
  77
  78 void error_with_pos(const char *, ...) __attribute__ ((format(printf, 1, 2)));
  79
  80 /*----------------------------------------------------------------------*/
  81 #define xmalloc(size) ({ void *__ptr = malloc(size);            \
  82         if(!__ptr && size != 0) {                               \
  83                 fprintf(stderr, "out of memory\n");             \
  84                 exit(1);                                        \
  85         }                                                       \
  86         __ptr; })
  87 #define xstrdup(str)  ({ char *__str = strdup(str);             \
  88         if (!__str) {                                           \
  89                 fprintf(stderr, "out of memory\n");             \
  90                 exit(1);                                        \
  91         }                                                       \
  92         __str; })
  93
  94 #endif                          /* genksyms.h */