4 * Copyright (C) 2006 Dan Carpenter.
6 * Licensed under the Open Software License version 1.1
19 #include "expression.h"
22 #define MAXSMSTATES 1000000 /* Limits RAM use. Give up on big functions */
27 #define STATE(_x) static struct smatch_state _x = { .name = #_x }
28 extern struct smatch_state undefined
;
29 extern struct smatch_state merged
;
30 extern struct smatch_state true_state
;
31 extern struct smatch_state false_state
;
37 struct smatch_state
*state
;
39 struct state_list_stack
*my_pools
;
40 struct state_list_stack
*all_pools
;
41 struct state_list
*possible
;
62 void add_hook(void *func
, enum hook_type type
);
63 typedef struct smatch_state
*(merge_func_t
)(const char *name
,
65 struct smatch_state
*s1
,
66 struct smatch_state
*s2
);
67 typedef struct smatch_state
*(unmatched_func_t
)(struct sm_state
*state
);
68 void add_merge_hook(int client_id
, merge_func_t
*func
);
69 void add_unmatched_state_hook(int client_id
, unmatched_func_t
*func
);
70 typedef void (func_hook
)(const char *fn
, struct expression
*expr
, void *data
);
71 void add_function_hook(const char *lock_for
, func_hook
*call_back
, void *data
);
73 void add_conditional_hook(const char *look_for
, func_hook
*call_back
, void *data
);
74 void set_cond_states(const char *name
, int owner
, struct symbol
*sym
,
75 struct smatch_state
*true_state
,
76 struct smatch_state
*false_state
);
77 void add_function_assign_hook(const char *look_for
, func_hook
*call_back
,
80 #define smatch_msg(msg...) \
82 printf("%s +%d %s(%d) ", get_filename(), get_lineno(), \
83 get_function(), get_func_pos()); \
88 #define SM_DEBUG(msg...) do { if (debug_states) printf(msg); } while (0)
89 #define DIMPLIED(msg...) do { if (debug_implied_states) printf(msg); } while (0)
91 #define UNDEFINED INT_MIN
93 struct smatch_state
*get_state(const char *name
, int owner
, struct symbol
*sym
);
94 struct state_list
*get_possible_states(const char *name
, int owner
,
96 void set_state(const char *name
, int owner
, struct symbol
*sym
,
97 struct smatch_state
*state
);
98 void delete_state(const char *name
, int owner
, struct symbol
*sym
);
99 void set_true_false_states(const char *name
, int owner
, struct symbol
*sym
,
100 struct smatch_state
*true_state
,
101 struct smatch_state
*false_state
);
103 struct state_list
*get_all_states(int id
);
105 char *get_filename();
106 char *get_function();
110 /* smatch_helper.c */
111 char *alloc_string(const char *str
);
112 void free_string(char *str
);
113 struct expression
*get_argument_from_call_expr(struct expression_list
*args
,
115 char *get_variable_from_expr_complex(struct expression
*expr
,
116 struct symbol
**sym_ptr
);
117 char *get_variable_from_expr(struct expression
*expr
,
118 struct symbol
**sym_ptr
);
119 int sym_name_is(const char *name
, struct expression
*expr
);
120 int get_value(struct expression
*expr
);
121 int is_zero(struct expression
*expr
);
122 const char *show_state(struct smatch_state
*state
);
123 struct statement
*get_block_thing(struct expression
*expr
);
124 struct expression
*strip_expr(struct expression
*expr
);
126 /* smatch_ignore.c */
132 DECLARE_PTR_LIST(tracker_list
, struct tracker
);
134 void add_ignore(const char *name
, int owner
, struct symbol
*sym
);
135 int is_ignored(const char *name
, int owner
, struct symbol
*sym
);
138 void add_tracker(struct tracker_list
**list
, const char *name
, int owner
,
140 void del_tracker(struct tracker_list
**list
, const char *name
, int owner
,
142 int in_tracker_list(struct tracker_list
*list
, const char *name
, int owner
,
144 void free_tracker_list(struct tracker_list
**list
);
145 void free_trackers_and_list(struct tracker_list
**list
);
147 /* smatch_conditions */
150 /* ----------------------------------------------------------------
151 The stuff below is all used internally and shouldn't
152 be called from other programs
153 -----------------------------------------------------------------*/
157 void smatch (int argc
, char **argv
);
158 void __split_expr(struct expression
*expr
);
159 void __split_statements(struct statement
*stmt
);
160 extern int option_assume_loops
;
161 extern int option_known_conditions
;
163 /* smatch_conditions */
164 void __split_whole_condition(struct expression
*expr
);
166 /* smatch_implied.c */
167 extern int debug_implied_states
;
168 extern int option_no_implied
;
169 void get_implications(char *name
, struct symbol
*sym
, int comparison
, int num
,
170 struct state_list
**true_states
,
171 struct state_list
**false_states
);
173 /* smatch_extras.c */
174 #define SMATCH_EXTRA 1 /* this is my_id from smatch extra set in smatch.c */
175 int true_comparison(int left
, int comparison
, int right
);
176 int known_condition_true(struct expression
*expr
);
177 int known_condition_false(struct expression
*expr
);
179 /* smatch_states.c */
180 extern int debug_states
;
182 struct state_list
*__get_cur_slist();
183 void __set_true_false_sm(struct sm_state
*true_state
,
184 struct sm_state
*false_state
);
186 void __match_nullify_path_hook(const char *fn
, struct expression
*expr
,
188 void __unnullify_path();
189 int __path_is_null();
190 void clear_all_states();
192 struct sm_state
*get_sm_state(const char *name
, int owner
,
194 void __use_false_only_stack();
195 void __pop_false_only_stack();
196 void __push_true_states();
197 void __use_false_states();
198 void __pop_false_states();
199 void __merge_false_states();
200 void __merge_true_states();
202 void __negate_cond_stacks();
203 void __save_false_states_for_later();
204 void __use_previously_stored_false_states();
205 void __use_cond_true_states();
206 void __use_cond_false_states();
207 void __push_cond_stacks();
208 void __and_cond_states();
209 void __or_cond_states();
210 void __save_pre_cond_states();
211 void __pop_pre_cond_states();
212 void __use_cond_states();
214 void __warn_on_silly_pre_loops();
216 void __push_continues();
217 void __pop_continues();
218 void __process_continues();
219 void __merge_continues();
221 void __push_breaks();
222 void __process_breaks();
223 void __merge_breaks();
226 void __save_switch_states();
227 void __pop_switches();
228 void __merge_switches();
229 void __push_default();
230 void __set_default();
233 void __push_conditions();
234 void __pop_conditions();
236 void __save_gotos(const char *name
);
237 void __merge_gotos(const char *name
);
239 void __print_cur_slist();
242 void __pass_to_client(void *data
, enum hook_type type
);
243 void __pass_to_client_no_data(enum hook_type type
);
244 int __has_merge_function(int client_id
);
245 struct smatch_state
*__client_merge_function(int owner
, const char *name
,
247 struct smatch_state
*s1
,
248 struct smatch_state
*s2
);
249 struct smatch_state
*__client_unmatched_state_function(struct sm_state
*sm
);
251 /* smatch_function_hooks.c */
254 func_hook
*call_back
;
257 DECLARE_ALLOCATOR(fcall_back
);
258 DECLARE_PTR_LIST(call_back_list
, struct fcall_back
);
259 void create_function_hash(void);
260 void __match_initializer_call(struct symbol
*sym
);
263 struct token
*get_tokens_file(const char *filename
);
266 extern char *bin_dir
;
268 #endif /* !SMATCH_H_ */