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 };
  31
  32 struct string_list {
  33         struct string_list *next;
  34         enum symbol_type tag;
  35         char *string;
  36 };
  37
  38 struct symbol {
  39         struct symbol *hash_next;
  40         const char *name;
  41         enum symbol_type type;
  42         struct string_list *defn;
  43         struct symbol *expansion_trail;
  44         struct symbol *visited;
  45         int is_extern;
  46 };
  47
  48 typedef struct string_list **yystype;
  49 #define YYSTYPE yystype
  50
  51 extern int cur_line;
  52 extern char *cur_filename;
  53
  54 struct symbol *find_symbol(const char *name, enum symbol_type ns);
  55 struct symbol *add_symbol(const char *name, enum symbol_type type,
  56                           struct string_list *defn, int is_extern);
  57 void export_symbol(const char *);
  58
  59 void free_node(struct string_list *list);
  60 void free_list(struct string_list *s, struct string_list *e);
  61 struct string_list *copy_node(struct string_list *);
  62
  63 int yylex(void);
  64 int yyparse(void);
  65
  66 void error_with_pos(const char *, ...);
  67
  68 /*----------------------------------------------------------------------*/
  69 #define xmalloc(size) ({ void *__ptr = malloc(size);            \
  70         if(!__ptr && size != 0) {                               \
  71                 fprintf(stderr, "out of memory\n");             \
  72                 exit(1);                                        \
  73         }                                                       \
  74         __ptr; })
  75 #define xstrdup(str)  ({ char *__str = strdup(str);             \
  76         if (!__str) {                                           \
  77                 fprintf(stderr, "out of memory\n");             \
  78                 exit(1);                                        \
  79         }                                                       \
  80         __str; })
  81
  82 #endif                          /* genksyms.h */