4 * Copyright (C) 2006 Dan Carpenter.
6 * Licensed under the Open Software License version 1.1
19 #include "expression.h"
25 #define STATE(_x) static struct smatch_state _x = { .name = #_x }
26 extern struct smatch_state undefined
;
27 extern struct smatch_state merged
;
28 extern struct smatch_state true_state
;
29 extern struct smatch_state false_state
;
30 DECLARE_ALLOCATOR(smatch_state
);
32 static inline void *INT_PTR(int i
)
34 return (void *)(long)i
;
37 static inline int PTR_INT(void *p
)
42 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
46 unsigned int merged
:1;
47 unsigned int implied
:1;
50 struct smatch_state
*state
;
52 struct state_list
*my_pool
;
53 struct sm_state
*left
;
54 struct sm_state
*right
;
55 unsigned int nr_children
;
56 struct state_list
*possible
;
64 DECLARE_ALLOCATOR(tracker
);
65 DECLARE_PTR_LIST(tracker_list
, struct tracker
);
86 void add_hook(void *func
, enum hook_type type
);
87 typedef struct smatch_state
*(merge_func_t
)(const char *name
,
89 struct smatch_state
*s1
,
90 struct smatch_state
*s2
);
91 typedef struct smatch_state
*(unmatched_func_t
)(struct sm_state
*state
);
92 void add_merge_hook(int client_id
, merge_func_t
*func
);
93 void add_unmatched_state_hook(int client_id
, unmatched_func_t
*func
);
94 typedef void (scope_hook
)(void *data
);
95 void add_scope_hook(scope_hook
*hook
, void *data
);
96 typedef void (func_hook
)(const char *fn
, struct expression
*expr
, void *data
);
97 typedef void (implication_hook
)(const char *fn
, struct expression
*call_expr
,
98 struct expression
*assign_expr
, void *data
);
99 void add_function_hook(const char *lock_for
, func_hook
*call_back
, void *data
);
101 void add_conditional_hook(const char *look_for
, func_hook
*call_back
, void *data
);
102 void add_function_assign_hook(const char *look_for
, func_hook
*call_back
,
104 void return_implies_state(const char *look_for
, long long start
, long long end
,
105 implication_hook
*call_back
, void *info
);
106 typedef void (modification_hook
)(const char *name
, struct symbol
*sym
,
107 struct expression
*expr
, void *data
);
108 void add_modification_hook(const char *variable
, modification_hook
*hook
,
110 int is_member(struct expression
*expr
);
111 void reset_on_container_modified(int owner
, struct expression
*expr
);
112 void set_default_state(int owner
, struct smatch_state
*state
);
114 extern int final_pass
;
116 #define sm_printf(msg...) do { if (final_pass) printf(msg); } while (0) \
118 #define sm_msg(msg...) \
122 printf("%s +%d %s(%d) ", get_filename(), get_lineno(), \
123 get_function(), get_func_pos()); \
128 #define sm_debug(msg...) do { if (debug_states) printf(msg); } while (0)
130 #define POINTER_MAX 0xffffffff
132 struct smatch_state
*get_state(int owner
, const char *name
, struct symbol
*sym
);
133 struct smatch_state
*get_state_expr(int owner
, struct expression
*expr
);
134 struct state_list
*get_possible_states(int owner
, const char *name
,
136 struct state_list
*get_possible_states_expr(int owner
, struct expression
*expr
);
137 void set_state(int owner
, const char *name
, struct symbol
*sym
,
138 struct smatch_state
*state
);
139 void set_state_expr(int owner
, struct expression
*expr
,
140 struct smatch_state
*state
);
141 void delete_state(int owner
, const char *name
, struct symbol
*sym
);
142 void delete_state_expr(int owner
, struct expression
*expr
);
143 void set_true_false_states(int owner
, const char *name
, struct symbol
*sym
,
144 struct smatch_state
*true_state
,
145 struct smatch_state
*false_state
);
146 void set_true_false_states_expr(int owner
, struct expression
*expr
,
147 struct smatch_state
*true_state
,
148 struct smatch_state
*false_state
);
150 struct state_list
*get_all_states(int id
);
152 char *get_filename();
153 char *get_function();
157 /* smatch_helper.c */
158 char *alloc_string(const char *str
);
159 void free_string(char *str
);
160 struct expression
*get_argument_from_call_expr(struct expression_list
*args
,
162 char *get_variable_from_expr_complex(struct expression
*expr
,
163 struct symbol
**sym_ptr
);
164 char *get_variable_from_expr(struct expression
*expr
,
165 struct symbol
**sym_ptr
);
166 int sym_name_is(const char *name
, struct expression
*expr
);
167 int get_value(struct expression
*expr
, long long *val
);
168 int get_implied_value(struct expression
*expr
, long long *val
);
169 int is_zero(struct expression
*expr
);
170 int is_array(struct expression
*expr
);
171 struct expression
*get_array_name(struct expression
*expr
);
172 struct expression
*get_array_offset(struct expression
*expr
);
173 const char *show_state(struct smatch_state
*state
);
174 struct statement
*get_block_thing(struct expression
*expr
);
175 struct expression
*strip_expr(struct expression
*expr
);
176 void scoped_state(int my_id
, const char *name
, struct symbol
*sym
);
177 int is_error_return(struct expression
*expr
);
180 struct symbol
*get_type(struct expression
*expr
);
182 /* smatch_ignore.c */
183 void add_ignore(int owner
, const char *name
, struct symbol
*sym
);
184 int is_ignored(int owner
, const char *name
, struct symbol
*sym
);
187 struct tracker
*alloc_tracker(int owner
, const char *name
, struct symbol
*sym
);
188 void add_tracker(struct tracker_list
**list
, int owner
, const char *name
,
190 void del_tracker(struct tracker_list
**list
, int owner
, const char *name
,
192 int in_tracker_list(struct tracker_list
*list
, int owner
, const char *name
,
194 void free_tracker_list(struct tracker_list
**list
);
195 void free_trackers_and_list(struct tracker_list
**list
);
197 /* smatch_conditions */
200 /* ----------------------------------------------------------------
201 The stuff below is all used internally and shouldn't
202 be called from other programs
203 -----------------------------------------------------------------*/
207 void smatch (int argc
, char **argv
);
208 void __split_expr(struct expression
*expr
);
209 void __split_statements(struct statement
*stmt
);
210 extern int option_assume_loops
;
211 extern int option_known_conditions
;
212 extern int option_two_passes
;
213 extern struct symbol
*cur_func_sym
;
215 /* smatch_conditions */
216 void __split_whole_condition(struct expression
*expr
);
218 /* smatch_implied.c */
219 extern int debug_implied_states
;
220 extern int option_no_implied
;
221 void get_implications(char *name
, struct symbol
*sym
, int comparison
, int num
,
222 struct state_list
**true_states
,
223 struct state_list
**false_states
);
224 struct range_list_stack
;
225 struct state_list
*__implied_case_slist(struct expression
*switch_expr
,
226 struct expression
*case_expr
,
227 struct range_list_stack
**remaining_cases
,
228 struct state_list
**raw_slist
);
229 struct range_list
*__get_implied_values(struct expression
*switch_expr
);
231 /* smatch_extras.c */
232 #define SMATCH_EXTRA 1 /* this is my_id from smatch extra set in smatch.c */
238 extern struct data_range whole_range
;
240 int get_implied_single_val(struct expression
*expr
, long long *val
);
241 int get_implied_max(struct expression
*expr
, long long *val
);
242 int get_implied_min(struct expression
*expr
, long long *val
);
243 int true_comparison(int left
, int comparison
, int right
);
244 int known_condition_true(struct expression
*expr
);
245 int known_condition_false(struct expression
*expr
);
246 int implied_condition_true(struct expression
*expr
);
247 int implied_condition_false(struct expression
*expr
);
249 /* smatch_states.c */
250 extern int debug_states
;
252 extern int __fake_cur
;
253 extern struct state_list
*__fake_cur_slist
;
254 extern int __fake_conditions
;
255 extern struct state_list
*__fake_cond_true
;
256 extern struct state_list
*__fake_cond_false
;
259 void __set_state(struct sm_state
*sm
);
260 struct state_list
*__get_cur_slist();
261 void __set_true_false_sm(struct sm_state
*true_state
,
262 struct sm_state
*false_state
);
264 void __match_nullify_path_hook(const char *fn
, struct expression
*expr
,
266 void __unnullify_path();
267 int __path_is_null();
268 void clear_all_states();
270 struct sm_state
*get_sm_state(int owner
, const char *name
,
272 struct sm_state
*get_sm_state_expr(int owner
, struct expression
*expr
);
273 void __use_false_only_stack();
274 void __pop_false_only_stack();
275 void __push_true_states();
276 void __use_false_states();
277 void __pop_false_states();
278 void __merge_false_states();
279 void __merge_true_states();
281 void __negate_cond_stacks();
282 void __save_false_states_for_later();
283 void __use_previously_stored_false_states();
284 void __use_cond_true_states();
285 void __use_cond_false_states();
286 void __push_cond_stacks();
287 void __and_cond_states();
288 void __or_cond_states();
289 void __save_pre_cond_states();
290 void __pop_pre_cond_states();
291 void __use_cond_states();
293 void __warn_on_silly_pre_loops();
295 void __push_continues();
296 void __pop_continues();
297 void __process_continues();
298 void __merge_continues();
300 void __push_breaks();
301 void __process_breaks();
302 void __merge_breaks();
305 void __save_switch_states(struct expression
*switch_expr
);
306 void __pop_switches();
307 void __merge_switches(struct expression
*switch_expr
, struct expression
*case_expr
);
308 void __push_default();
309 void __set_default();
312 void __push_conditions();
313 void __pop_conditions();
315 void __save_gotos(const char *name
);
316 void __merge_gotos(const char *name
);
318 void __print_cur_slist();
321 void __pass_to_client(void *data
, enum hook_type type
);
322 void __pass_to_client_no_data(enum hook_type type
);
323 void __pass_case_to_client(struct expression
*switch_expr
,
324 struct expression
*case_expr
);
325 int __has_merge_function(int client_id
);
326 struct smatch_state
*__client_merge_function(int owner
, const char *name
,
328 struct smatch_state
*s1
,
329 struct smatch_state
*s2
);
330 struct smatch_state
*__client_unmatched_state_function(struct sm_state
*sm
);
331 void __push_scope_hooks(void);
332 void __call_scope_hooks(void);
334 /* smatch_function_hooks.c */
335 void create_function_hash(void);
336 void __match_initializer_call(struct symbol
*sym
);
339 struct token
*get_tokens_file(const char *filename
);
342 extern int option_oom_kb
;
346 extern char *option_project_str
;
347 extern char *data_dir
;
348 extern int option_no_data
;
349 extern int option_spammy
;
350 extern int option_full_path
;
351 extern struct smatch_state
*default_state
[];
358 extern enum project_type option_project
;
359 const char *check_name(unsigned short id
);
361 #endif /* !SMATCH_H_ */