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 DECLARE_PTR_LIST(range_list, struct data_range);
  15
  16 struct data_info {
  17         enum data_type type;
  18         struct range_list *value_ranges;
  19 };
  20 DECLARE_ALLOCATOR(data_info);
  21
  22 /* these are implimented in smatch_extra_helper.c */
  23 struct data_range *alloc_range_perm(long long min, long long max);
  24 void add_range(struct range_list **list, long long min, long long max);
  25 int true_comparison_range(struct data_range *left, int comparison, struct data_range *right);
  26 int possibly_true(int comparison, struct data_info *dinfo, int num, int left);
  27 int possibly_false(int comparison, struct data_info *dinfo, int num, int left);
  28 void free_data_info_allocs(void);
  29 struct range_list *clone_range_list(struct range_list *list);
  30 char *show_ranges(struct range_list *list);
  31 struct range_list *remove_range(struct range_list *list, long long min, long long max);
  32
  33 /* used in smatch_slist.  implemented in smatch_extra.c */
  34 struct sm_state *__extra_merge(struct sm_state *one, struct state_list *slist1,
  35                                struct sm_state *two, struct state_list *slist2);
  36 struct sm_state *__extra_and_merge(struct sm_state *sm,
  37                                      struct state_list_stack *stack);
  38 struct sm_state *__extra_pre_loop_hook_before(struct statement *iterator_pre_statement);
  39 int __iterator_unchanged(struct sm_state *sm, struct statement *iterator);
  40 void __extra_pre_loop_hook_after(struct sm_state *sm,
  41                                 struct statement *iterator,
  42                                 struct expression *condition);
  43
  44 /* also implemented in smatch_extra */
  45 struct smatch_state *alloc_extra_state(int val);
  46 struct smatch_state *add_filter(struct smatch_state *orig, long long filter);
  47 struct smatch_state *extra_undefined();
  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_dinfo_min(struct data_info *dinfo);
  52 long long get_dinfo_max(struct data_info *dinfo);
  53 long long get_single_value_from_range(struct data_info *dinfo);
  54
  55 void function_comparison(int comparison, struct expression *expr, long long value, int left);
  56
  57 int true_comparison_range_lr(int comparison, struct data_range *var, struct data_range *val, int left);
  58 int false_comparison_range_lr(int comparison, struct data_range *var, struct data_range *val, int left);
  59 struct data_range *alloc_range(long long min, long long max);
  60 void tack_on(struct range_list **list, struct data_range *drange);
  61 int in_list_exact(struct range_list *list, struct data_range *drange);
  62
  63 struct smatch_state *alloc_extra_state_range(long long min, long long max);