2 * sparse/smatch_hooks.c
4 * Copyright (C) 2006 Dan Carpenter.
6 * Licensed under the Open Software License version 1.1
18 struct hook_container
{
20 enum data_type data_type
;
23 ALLOCATOR(hook_container
, "hook functions");
24 DECLARE_PTR_LIST(hook_func_list
, struct hook_container
);
25 static struct hook_func_list
*hook_funcs
;
26 static struct hook_func_list
*merge_funcs
;
27 static struct hook_func_list
*unmatched_state_funcs
;
29 struct scope_container
{
33 ALLOCATOR(scope_container
, "scope hook functions");
34 DECLARE_PTR_LIST(scope_hook_list
, struct scope_container
);
35 DECLARE_PTR_LIST(scope_hook_stack
, struct scope_hook_list
);
36 static struct scope_hook_stack
*scope_hooks
;
38 void add_hook(void *func
, enum hook_type type
)
40 struct hook_container
*container
= __alloc_hook_container(0);
41 container
->hook_type
= type
;
45 container
->data_type
= EXPR_PTR
;
48 container
->data_type
= STMT_PTR
;
51 container
->data_type
= EXPR_PTR
;
54 container
->data_type
= EXPR_PTR
;
56 case DECLARATION_HOOK
:
57 container
->data_type
= SYMBOL_PTR
;
60 container
->data_type
= EXPR_PTR
;
62 case RAW_ASSIGNMENT_HOOK
:
63 container
->data_type
= EXPR_PTR
;
65 case GLOBAL_ASSIGNMENT_HOOK
:
66 container
->data_type
= EXPR_PTR
;
68 case CALL_ASSIGNMENT_HOOK
:
69 container
->data_type
= EXPR_PTR
;
71 case MACRO_ASSIGNMENT_HOOK
:
72 container
->data_type
= EXPR_PTR
;
75 container
->data_type
= EXPR_PTR
;
78 container
->data_type
= EXPR_PTR
;
81 container
->data_type
= EXPR_PTR
;
84 container
->data_type
= STMT_PTR
;
87 container
->data_type
= EXPR_PTR
;
90 container
->data_type
= EXPR_PTR
;
92 case WHOLE_CONDITION_HOOK
:
93 container
->data_type
= EXPR_PTR
;
95 case FUNCTION_CALL_HOOK
:
96 container
->data_type
= EXPR_PTR
;
99 container
->data_type
= EXPR_PTR
;
105 container
->data_type
= STMT_PTR
;
108 container
->data_type
= EXPR_PTR
;
111 container
->data_type
= EXPR_PTR
;
114 container
->data_type
= SYMBOL_PTR
;
117 container
->data_type
= SYMBOL_PTR
;
120 container
->data_type
= SYMBOL_PTR
;
123 container
->data_type
= EXPR_PTR
;
126 /* nothing needed... */
129 add_ptr_list(&hook_funcs
, container
);
132 void add_merge_hook(int client_id
, merge_func_t
*func
)
134 struct hook_container
*container
= __alloc_hook_container(0);
135 container
->data_type
= client_id
;
136 container
->fn
= func
;
137 add_ptr_list(&merge_funcs
, container
);
140 void add_unmatched_state_hook(int client_id
, unmatched_func_t
*func
)
142 struct hook_container
*container
= __alloc_hook_container(0);
143 container
->data_type
= client_id
;
144 container
->fn
= func
;
145 add_ptr_list(&unmatched_state_funcs
, container
);
148 static void pass_to_client(void *fn
)
150 typedef void (expr_func
)();
151 ((expr_func
*) fn
)();
154 static void pass_expr_to_client(void *fn
, void *data
)
156 typedef void (expr_func
)(struct expression
*expr
);
157 ((expr_func
*) fn
)((struct expression
*) data
);
160 static void pass_stmt_to_client(void *fn
, void *data
)
162 typedef void (stmt_func
)(struct statement
*stmt
);
163 ((stmt_func
*) fn
)((struct statement
*) data
);
166 static void pass_sym_to_client(void *fn
, void *data
)
168 typedef void (sym_func
)(struct symbol
*sym
);
169 ((sym_func
*) fn
)((struct symbol
*) data
);
172 void __pass_to_client(void *data
, enum hook_type type
)
174 struct hook_container
*container
;
176 FOR_EACH_PTR(hook_funcs
, container
) {
177 if (container
->hook_type
== type
) {
178 switch (container
->data_type
) {
180 pass_expr_to_client(container
->fn
, data
);
183 pass_stmt_to_client(container
->fn
, data
);
186 pass_sym_to_client(container
->fn
, data
);
190 } END_FOR_EACH_PTR(container
);
193 void __pass_to_client_no_data(enum hook_type type
)
195 struct hook_container
*container
;
197 FOR_EACH_PTR(hook_funcs
, container
) {
198 if (container
->hook_type
== type
)
199 pass_to_client(container
->fn
);
200 } END_FOR_EACH_PTR(container
);
203 void __pass_case_to_client(struct expression
*switch_expr
,
204 struct expression
*case_expr
)
206 typedef void (case_func
)(struct expression
*switch_expr
,
207 struct expression
*case_expr
);
208 struct hook_container
*container
;
210 FOR_EACH_PTR(hook_funcs
, container
) {
211 if (container
->hook_type
== CASE_HOOK
)
212 ((case_func
*) container
->fn
)(switch_expr
, case_expr
);
213 } END_FOR_EACH_PTR(container
);
216 int __has_merge_function(int client_id
)
218 struct hook_container
*tmp
;
220 FOR_EACH_PTR(merge_funcs
, tmp
) {
221 if (tmp
->data_type
== client_id
)
223 } END_FOR_EACH_PTR(tmp
);
227 struct smatch_state
*__client_merge_function(int owner
,
228 struct smatch_state
*s1
,
229 struct smatch_state
*s2
)
231 struct smatch_state
*tmp_state
;
232 struct hook_container
*tmp
;
234 /* Pass NULL states first and the rest alphabetically by name */
235 if (!s2
|| (s1
&& strcmp(s2
->name
, s1
->name
) < 0)) {
241 FOR_EACH_PTR(merge_funcs
, tmp
) {
242 if (tmp
->data_type
== owner
)
243 return ((merge_func_t
*) tmp
->fn
)(s1
, s2
);
244 } END_FOR_EACH_PTR(tmp
);
248 struct smatch_state
*__client_unmatched_state_function(struct sm_state
*sm
)
250 struct hook_container
*tmp
;
252 FOR_EACH_PTR(unmatched_state_funcs
, tmp
) {
253 if (tmp
->data_type
== sm
->owner
)
254 return ((unmatched_func_t
*) tmp
->fn
)(sm
);
255 } END_FOR_EACH_PTR(tmp
);
259 static struct scope_hook_list
*pop_scope_hook_list(struct scope_hook_stack
**stack
)
261 struct scope_hook_list
*hook_list
;
263 hook_list
= last_ptr_list((struct ptr_list
*)*stack
);
264 delete_ptr_list_last((struct ptr_list
**)stack
);
268 static void push_scope_hook_list(struct scope_hook_stack
**stack
, struct scope_hook_list
*l
)
270 add_ptr_list(stack
, l
);
273 void add_scope_hook(scope_hook
*fn
, void *data
)
275 struct scope_hook_list
*hook_list
;
276 struct scope_container
*new;
280 hook_list
= pop_scope_hook_list(&scope_hooks
);
281 new = __alloc_scope_container(0);
284 add_ptr_list(&hook_list
, new);
285 push_scope_hook_list(&scope_hooks
, hook_list
);
288 void __push_scope_hooks(void)
290 push_scope_hook_list(&scope_hooks
, NULL
);
293 void __call_scope_hooks(void)
295 struct scope_hook_list
*hook_list
;
296 struct scope_container
*tmp
;
301 hook_list
= pop_scope_hook_list(&scope_hooks
);
302 FOR_EACH_PTR(hook_list
, tmp
) {
303 ((scope_hook
*) tmp
->fn
)(tmp
->data
);
304 __free_scope_container(tmp
);
305 } END_FOR_EACH_PTR(tmp
);