smatch_extra.h

   1 /*
   2  * sparse/smatch_extra.h
   3  *
   4  * Copyright (C) 2009 Dan Carpenter.
   5  *
   6  * Licensed under the Open Software License version 1.1
   7  *
   8  */
   9
  10 enum data_type {
  11         DATA_RANGE,
  12 };
  13
  14 struct data_range {
  15         long long min;
  16         long long max;
  17 };
  18
  19 DECLARE_PTR_LIST(range_list, struct data_range);
  20
  21 struct data_info {
  22         int merged;
  23         enum data_type type;
  24         struct range_list *value_ranges;
  25 };
  26 DECLARE_ALLOCATOR(data_info);
  27
  28 extern struct data_range whole_range;
  29
  30 /* these are implimented in smatch_extra_helper.c */
  31 void add_range(struct range_list **list, long long min, long long max);
  32 int possibly_true(int comparison, struct data_info *dinfo, int num, int left);
  33 int possibly_false(int comparison, struct data_info *dinfo, int num, int left);
  34 void free_data_info_allocs(void);
  35 struct range_list *clone_range_list(struct range_list *list);
  36 char *show_ranges(struct range_list *list);
  37 struct range_list *remove_range(struct range_list *list, long long min, long long max);
  38
  39 /* used in smatch_slist.  implemented in smatch_extra.c */
  40 struct sm_state *__extra_merge(struct sm_state *one, struct state_list *slist1,
  41                                struct sm_state *two, struct state_list *slist2);
  42 struct sm_state *__extra_and_merge(struct sm_state *sm,
  43                                      struct state_list_stack *stack);
  44
  45 /* also implemented in smatch_extra */
  46 struct smatch_state *alloc_extra_state(int val);
  47 struct smatch_state *add_filter(struct smatch_state *orig, long long filter);
  48
  49 struct data_info *alloc_dinfo_range(long long min, long long max);
  50 struct range_list *range_list_union(struct range_list *one, struct range_list *two);
  51 long long get_single_value_from_range(struct data_info *dinfo);