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 DECLARE_PTR_LIST(range_list_stack, struct range_list);
  16
  17 struct data_info {
  18         enum data_type type;
  19         struct range_list *value_ranges;
  20 };
  21 DECLARE_ALLOCATOR(data_info);
  22
  23 /* these are implimented in smatch_ranges.c */
  24 struct data_range *alloc_range_perm(long long min, long long max);
  25 void add_range(struct range_list **list, long long min, long long max);
  26 int true_comparison_range(struct data_range *left, int comparison, struct data_range *right);
  27 int possibly_true(int comparison, struct data_info *dinfo, int num, int left);
  28 int possibly_true_range_list(int comparison, struct data_info *dinfo, struct range_list *values, int left);
  29 int possibly_false(int comparison, struct data_info *dinfo, int num, int left);
  30 int possibly_false_range_list(int comparison, struct data_info *dinfo, struct range_list *values, int left);
  31 void free_data_info_allocs(void);
  32 struct range_list *clone_range_list(struct range_list *list);
  33 char *show_ranges(struct range_list *list);
  34 struct range_list *remove_range(struct range_list *list, long long min, long long max);
  35
  36 /* used in smatch_slist.  implemented in smatch_extra.c */
  37 int implied_not_equal(struct expression *expr, long long val);
  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 *alloc_extra_state_range_list(struct range_list *rl);
  47 struct data_info *get_dinfo(struct smatch_state *state);
  48 struct smatch_state *add_filter(struct smatch_state *orig, long long filter);
  49 struct smatch_state *extra_undefined();
  50
  51 struct data_info *alloc_dinfo_range(long long min, long long max);
  52 struct data_info *alloc_dinfo_range_list(struct range_list *rl);
  53 struct range_list *range_list_union(struct range_list *one, struct range_list *two);
  54 long long get_dinfo_min(struct data_info *dinfo);
  55 long long get_dinfo_max(struct data_info *dinfo);
  56 int get_single_value_from_range(struct data_info *dinfo, long long *val);
  57
  58 void function_comparison(int comparison, struct expression *expr, long long value, int left);
  59
  60 int true_comparison_range_lr(int comparison, struct data_range *var, struct data_range *val, int left);
  61 int false_comparison_range_lr(int comparison, struct data_range *var, struct data_range *val, int left);
  62 struct data_range *alloc_range(long long min, long long max);
  63 void tack_on(struct range_list **list, struct data_range *drange);
  64 int in_list_exact(struct range_list *list, struct data_range *drange);
  65
  66 struct smatch_state *alloc_extra_state_range(long long min, long long max);
  67
  68 void push_range_list(struct range_list_stack **rl_stack, struct range_list *rl);
  69 struct range_list *pop_range_list(struct range_list_stack **rl_stack);
  70 struct range_list *top_range_list(struct range_list_stack *rl_stack);
  71 void filter_top_range_list(struct range_list_stack **rl_stack, long long num);
  72 int get_implied_range_list(struct expression *expr, struct range_list **rl);