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
;
50 ASSIGNMENT_AFTER_HOOK
,
54 FUNCTION_CALL_AFTER_HOOK
,
63 void add_hook(void *func
, enum hook_type type
);
64 typedef struct smatch_state
*(merge_func_t
)(const char *name
,
66 struct smatch_state
*s1
,
67 struct smatch_state
*s2
);
68 void add_merge_hook(int client_id
, merge_func_t
*func
);
70 #define smatch_msg(msg...) \
72 printf("%s +%d %s(%d) ", get_filename(), get_lineno(), \
73 get_function(), get_func_pos()); \
78 #define SM_DEBUG(msg...) do { if (debug_states) printf(msg); } while (0)
79 #define DIMPLIED(msg...) do { if (debug_implied_states) printf(msg); } while (0)
81 #define UNDEFINED INT_MIN
83 struct smatch_state
*get_state(const char *name
, int owner
, struct symbol
*sym
);
84 struct state_list
*get_possible_states(const char *name
, int owner
,
86 void set_state(const char *name
, int owner
, struct symbol
*sym
,
87 struct smatch_state
*state
);
88 void delete_state(const char *name
, int owner
, struct symbol
*sym
);
89 void set_true_false_states(const char *name
, int owner
, struct symbol
*sym
,
90 struct smatch_state
*true_state
,
91 struct smatch_state
*false_state
);
93 struct state_list
*get_all_states(int id
);
100 /* smatch_helper.c */
101 char *alloc_string(const char *str
);
102 void free_string(char *str
);
103 struct expression
*get_argument_from_call_expr(struct expression_list
*args
,
105 char *get_variable_from_expr_complex(struct expression
*expr
,
106 struct symbol
**sym_ptr
);
107 char *get_variable_from_expr(struct expression
*expr
,
108 struct symbol
**sym_ptr
);
109 int sym_name_is(const char *name
, struct expression
*expr
);
110 int get_value(struct expression
*expr
);
111 int is_zero(struct expression
*expr
);
112 const char *show_state(struct smatch_state
*state
);
113 struct statement
*get_block_thing(struct expression
*expr
);
114 struct expression
*strip_expr(struct expression
*expr
);
116 /* smatch_ignore.c */
122 DECLARE_PTR_LIST(tracker_list
, struct tracker
);
124 void add_ignore(const char *name
, int owner
, struct symbol
*sym
);
125 int is_ignored(const char *name
, int owner
, struct symbol
*sym
);
128 void add_tracker(struct tracker_list
**list
, const char *name
, int owner
,
130 int in_tracker_list(struct tracker_list
*list
, const char *name
, int owner
,
132 void free_tracker_list(struct tracker_list
**list
);
133 void free_trackers_and_list(struct tracker_list
**list
);
135 /* smatch_conditions */
138 /* ----------------------------------------------------------------
139 The stuff below is all used internally and shouldn't
140 be called from other programs
141 -----------------------------------------------------------------*/
145 void smatch (int argc
, char **argv
);
146 void __split_expr(struct expression
*expr
);
147 void __split_statements(struct statement
*stmt
);
148 extern int option_assume_loops
;
150 /* smatch_conditions */
151 void __split_whole_condition(struct expression
*expr
);
153 /* smatch_implied.c */
154 extern int debug_implied_states
;
155 extern int option_no_implied
;
157 /* smatch_extras.c */
158 #define SMATCH_EXTRA 1 /* this is my_id from smatch extra set in smatch.c */
159 int true_comparison(int left
, int comparison
, int right
);
160 int known_condition_true(struct expression
*expr
);
161 int known_condition_false(struct expression
*expr
);
163 /* smatch_states.c */
164 extern int debug_states
;
166 struct state_list
*__get_cur_slist();
167 void __set_true_false_sm(struct sm_state
*true_state
,
168 struct sm_state
*false_state
);
170 void __unnullify_path();
171 int __path_is_null();
172 void clear_all_states();
174 struct sm_state
*get_sm_state(const char *name
, int owner
,
176 void __use_false_only_stack();
177 void __pop_false_only_stack();
178 void __push_true_states();
179 void __use_false_states();
180 void __pop_false_states();
181 void __merge_false_states();
182 void __merge_true_states();
184 void __negate_cond_stacks();
185 void __save_false_states_for_later();
186 void __use_previously_stored_false_states();
187 void __use_cond_true_states();
188 void __use_cond_false_states();
189 void __push_cond_stacks();
190 void __and_cond_states();
191 void __or_cond_states();
192 void __save_pre_cond_states();
193 void __pop_pre_cond_states();
194 void __use_cond_states();
196 void __push_continues();
197 void __pop_continues();
198 void __process_continues();
199 void __merge_continues();
201 void __push_breaks();
202 void __process_breaks();
203 void __merge_breaks();
206 void __save_switch_states();
207 void __pop_switches();
208 void __merge_switches();
209 void __push_default();
210 void __set_default();
213 void __push_conditions();
214 void __pop_conditions();
216 void __save_gotos(const char *name
);
217 void __merge_gotos(const char *name
);
219 void __print_cur_slist();
222 void __pass_to_client(void *data
, enum hook_type type
);
223 void __pass_to_client_no_data(enum hook_type type
);
224 void __pass_declarations_to_client(struct symbol_list
*sym_list
);
225 int __has_merge_function(int client_id
);
226 struct smatch_state
*__client_merge_function(int owner
, const char *name
, struct symbol
*sym
,
227 struct smatch_state
*s1
, struct smatch_state
*s2
);
229 #endif /* !SMATCH_H_ */