2 * Copyright (C) 2006 Dan Carpenter.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see http://www.gnu.org/copyleft/gpl.txt
31 #include "expression.h"
38 unsigned long long uvalue
;
45 typedef long long mtag_t
;
51 #define STATE(_x) static struct smatch_state _x = { .name = #_x }
52 extern struct smatch_state undefined
;
53 extern struct smatch_state ghost
;
54 extern struct smatch_state merged
;
55 extern struct smatch_state true_state
;
56 extern struct smatch_state false_state
;
57 DECLARE_ALLOCATOR(smatch_state
);
59 static inline void *INT_PTR(int i
)
61 return (void *)(long)i
;
64 static inline int PTR_INT(void *p
)
74 DECLARE_ALLOCATOR(tracker
);
75 DECLARE_PTR_LIST(tracker_list
, struct tracker
);
76 DECLARE_PTR_LIST(stree_stack
, struct stree
);
78 /* The first 3 struct members must match struct tracker */
83 unsigned short merged
:1;
85 struct smatch_state
*state
;
87 struct sm_state
*left
;
88 struct sm_state
*right
;
89 struct state_list
*possible
;
96 DECLARE_ALLOCATOR(var_sym
);
97 DECLARE_PTR_LIST(var_sym_list
, struct var_sym
);
103 DECLARE_PTR_LIST(constraint_list
, struct constraint
);
109 extern struct alloc_info
*alloc_funcs
;
112 unsigned long long set
;
113 unsigned long long possible
;
125 ASSIGNMENT_HOOK_AFTER
,
127 GLOBAL_ASSIGNMENT_HOOK
,
132 WHOLE_CONDITION_HOOK
,
133 FUNCTION_CALL_HOOK_BEFORE
,
135 CALL_HOOK_AFTER_INLINE
,
136 FUNCTION_CALL_HOOK_AFTER_DB
,
137 CALL_ASSIGNMENT_HOOK
,
138 MACRO_ASSIGNMENT_HOOK
,
163 void add_hook(void *func
, enum hook_type type
);
164 typedef struct smatch_state
*(merge_func_t
)(struct smatch_state
*s1
, struct smatch_state
*s2
);
165 typedef struct smatch_state
*(unmatched_func_t
)(struct sm_state
*state
);
166 void add_merge_hook(int client_id
, merge_func_t
*func
);
167 void add_unmatched_state_hook(int client_id
, unmatched_func_t
*func
);
168 void add_pre_merge_hook(int client_id
, void (*hook
)(struct sm_state
*cur
, struct sm_state
*other
));
169 typedef void (scope_hook
)(void *data
);
170 void add_scope_hook(scope_hook
*hook
, void *data
);
171 typedef void (func_hook
)(const char *fn
, struct expression
*expr
, void *data
);
172 typedef void (implication_hook
)(const char *fn
, struct expression
*call_expr
,
173 struct expression
*assign_expr
, void *data
);
174 typedef void (return_implies_hook
)(struct expression
*call_expr
,
175 int param
, char *key
, char *value
);
176 typedef int (implied_return_hook
)(struct expression
*call_expr
, void *info
, struct range_list
**rl
);
177 void add_function_hook(const char *look_for
, func_hook
*call_back
, void *data
);
179 void add_function_assign_hook(const char *look_for
, func_hook
*call_back
,
181 void add_implied_return_hook(const char *look_for
,
182 implied_return_hook
*call_back
,
184 void add_macro_assign_hook(const char *look_for
, func_hook
*call_back
,
186 void add_macro_assign_hook_extra(const char *look_for
, func_hook
*call_back
,
188 void return_implies_state(const char *look_for
, long long start
, long long end
,
189 implication_hook
*call_back
, void *info
);
190 void return_implies_state_sval(const char *look_for
, sval_t start
, sval_t end
,
191 implication_hook
*call_back
, void *info
);
192 struct range_list
*get_range_implications(const char *fn
);
193 void select_return_states_hook(int type
, return_implies_hook
*callback
);
194 void select_return_states_before(void (*fn
)(void));
195 void select_return_states_after(void (*fn
)(void));
196 int get_implied_return(struct expression
*expr
, struct range_list
**rl
);
197 void allocate_hook_memory(void);
198 void allocate_tracker_array(int num_checks
);
200 struct modification_data
{
201 struct smatch_state
*prev
;
202 struct expression
*cur
;
205 typedef void (modification_hook
)(struct sm_state
*sm
, struct expression
*mod_expr
);
206 void add_modification_hook(int owner
, modification_hook
*call_back
);
207 void add_modification_hook_late(int owner
, modification_hook
*call_back
);
208 struct smatch_state
*get_modification_state(struct expression
*expr
);
210 int outside_of_function(void);
211 const char *get_filename(void);
212 const char *get_base_file(void);
213 char *get_function(void);
214 int get_lineno(void);
215 extern int final_pass
;
216 extern struct symbol
*cur_func_sym
;
217 extern int option_debug
;
218 extern int local_debug
;
220 bool debug_implied(void);
221 extern int option_info
;
222 extern int option_spammy
;
223 extern char *trace_variable
;
224 extern struct stree
*global_states
;
225 int is_skipped_function(void);
226 int is_silenced_function(void);
227 extern bool implications_off
;
229 /* smatch_impossible.c */
230 int is_impossible_path(void);
231 void set_path_impossible(void);
233 extern FILE *sm_outfd
;
234 extern FILE *sql_outfd
;
235 extern FILE *caller_info_fd
;
236 extern int sm_nr_checks
;
237 extern int sm_nr_errors
;
240 * How to use these routines:
242 * sm_fatal(): an internal error of some kind that should immediately exit
243 * sm_ierror(): an internal error
244 * sm_perror(): an internal error from parsing input source
245 * sm_error(): an error from input source
246 * sm_warning(): a warning from input source
247 * sm_info(): info message (from option_info)
248 * sm_debug(): debug message
249 * sm_msg(): other message (please avoid using this)
252 #define sm_printf(msg...) do { \
253 if (final_pass || option_debug || local_debug || debug_db) \
254 fprintf(sm_outfd, msg); \
257 static inline void sm_prefix(void)
259 sm_printf("%s:%d %s() ", get_filename(), get_lineno(), get_function());
262 static inline void print_implied_debug_msg();
264 extern bool __silence_warnings_for_stmt
;
266 #define sm_print_msg(type, msg...) \
268 print_implied_debug_msg(); \
269 if (!final_pass && !option_debug && !local_debug && !debug_db) \
271 if (__silence_warnings_for_stmt && !option_debug && !local_debug) \
273 if (!option_info && is_silenced_function()) \
277 sm_printf("warn: "); \
279 } else if (type == 2) { \
280 sm_printf("error: "); \
282 } else if (type == 3) { \
283 sm_printf("parse error: "); \
290 #define sm_msg(msg...) do { sm_print_msg(0, msg); } while (0)
292 extern char *implied_debug_msg
;
293 static inline void print_implied_debug_msg(void)
295 static struct symbol
*last_printed
= NULL
;
297 if (!implied_debug_msg
)
299 if (last_printed
== cur_func_sym
)
301 last_printed
= cur_func_sym
;
302 sm_msg("%s", implied_debug_msg
);
305 #define sm_debug(msg...) do { if (option_debug) sm_printf(msg); } while (0)
306 #define db_debug(msg...) do { if (option_debug || debug_db) sm_printf(msg); } while (0)
308 #define sm_info(msg...) do { \
309 if (option_debug || (option_info && final_pass)) { \
311 sm_printf("info: "); \
317 #define sm_warning(msg...) do { sm_print_msg(1, msg); } while (0)
318 #define sm_error(msg...) do { sm_print_msg(2, msg); } while (0)
319 #define sm_perror(msg...) do { sm_print_msg(3, msg); } while (0)
321 static inline void sm_fatal(const char *fmt
, ...)
326 vfprintf(sm_outfd
, fmt
, args
);
329 fprintf(sm_outfd
, "\n");
334 static inline void sm_ierror(const char *fmt
, ...)
340 fprintf(sm_outfd
, "internal error: ");
343 vfprintf(sm_outfd
, fmt
, args
);
346 fprintf(sm_outfd
, "\n");
348 #define ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1))
350 struct smatch_state
*__get_state(int owner
, const char *name
, struct symbol
*sym
);
351 struct smatch_state
*get_state(int owner
, const char *name
, struct symbol
*sym
);
352 struct smatch_state
*get_state_expr(int owner
, struct expression
*expr
);
353 struct state_list
*get_possible_states(int owner
, const char *name
,
355 struct state_list
*get_possible_states_expr(int owner
, struct expression
*expr
);
356 struct sm_state
*set_state(int owner
, const char *name
, struct symbol
*sym
,
357 struct smatch_state
*state
);
358 struct sm_state
*set_state_expr(int owner
, struct expression
*expr
,
359 struct smatch_state
*state
);
360 void delete_state(int owner
, const char *name
, struct symbol
*sym
);
361 void delete_state_expr(int owner
, struct expression
*expr
);
362 void __delete_all_states_sym(struct symbol
*sym
);
363 void set_true_false_states(int owner
, const char *name
, struct symbol
*sym
,
364 struct smatch_state
*true_state
,
365 struct smatch_state
*false_state
);
366 void set_true_false_states_expr(int owner
, struct expression
*expr
,
367 struct smatch_state
*true_state
,
368 struct smatch_state
*false_state
);
370 struct stree
*get_all_states_from_stree(int owner
, struct stree
*source
);
371 struct stree
*get_all_states_stree(int id
);
372 struct stree
*__get_cur_stree(void);
373 int is_reachable(void);
374 void add_get_state_hook(void (*fn
)(int owner
, const char *name
, struct symbol
*sym
));
376 /* smatch_helper.c */
377 DECLARE_PTR_LIST(int_stack
, int);
378 char *alloc_string(const char *str
);
379 char *alloc_string_newline(const char *str
);
380 void free_string(char *str
);
381 void append(char *dest
, const char *data
, int buff_len
);
382 void remove_parens(char *str
);
383 struct smatch_state
*alloc_state_num(int num
);
384 struct smatch_state
*alloc_state_str(const char *name
);
385 struct smatch_state
*merge_str_state(struct smatch_state
*s1
, struct smatch_state
*s2
);
386 struct smatch_state
*alloc_state_expr(struct expression
*expr
);
387 struct expression
*get_argument_from_call_expr(struct expression_list
*args
,
389 struct expression
*get_array_expr(struct expression
*expr
);
391 char *expr_to_var(struct expression
*expr
);
392 struct symbol
*expr_to_sym(struct expression
*expr
);
393 char *expr_to_str(struct expression
*expr
);
394 char *expr_to_str_sym(struct expression
*expr
,
395 struct symbol
**sym_ptr
);
396 char *expr_to_var_sym(struct expression
*expr
,
397 struct symbol
**sym_ptr
);
398 char *expr_to_known_chunk_sym(struct expression
*expr
, struct symbol
**sym
);
399 char *expr_to_chunk_sym_vsl(struct expression
*expr
, struct symbol
**sym
, struct var_sym_list
**vsl
);
400 int get_complication_score(struct expression
*expr
);
402 int sym_name_is(const char *name
, struct expression
*expr
);
403 int get_const_value(struct expression
*expr
, sval_t
*sval
);
404 int get_value(struct expression
*expr
, sval_t
*val
);
405 int get_implied_value(struct expression
*expr
, sval_t
*val
);
406 int get_implied_value_fast(struct expression
*expr
, sval_t
*sval
);
407 int get_implied_min(struct expression
*expr
, sval_t
*sval
);
408 int get_implied_max(struct expression
*expr
, sval_t
*val
);
409 int get_hard_max(struct expression
*expr
, sval_t
*sval
);
410 int get_fuzzy_min(struct expression
*expr
, sval_t
*min
);
411 int get_fuzzy_max(struct expression
*expr
, sval_t
*max
);
412 int get_absolute_min(struct expression
*expr
, sval_t
*sval
);
413 int get_absolute_max(struct expression
*expr
, sval_t
*sval
);
414 int parse_call_math(struct expression
*expr
, char *math
, sval_t
*val
);
415 int parse_call_math_rl(struct expression
*call
, const char *math
, struct range_list
**rl
);
416 const char *get_allocation_math(struct expression
*expr
);
417 char *get_value_in_terms_of_parameter_math(struct expression
*expr
);
418 char *get_value_in_terms_of_parameter_math_var_sym(const char *var
, struct symbol
*sym
);
419 int expr_is_zero(struct expression
*expr
);
420 int known_condition_true(struct expression
*expr
);
421 int known_condition_false(struct expression
*expr
);
422 int implied_condition_true(struct expression
*expr
);
423 int implied_condition_false(struct expression
*expr
);
424 int can_integer_overflow(struct symbol
*type
, struct expression
*expr
);
425 void clear_math_cache(void);
426 void set_fast_math_only(void);
427 void clear_fast_math_only(void);
429 int is_array(struct expression
*expr
);
430 struct expression
*get_array_base(struct expression
*expr
);
431 struct expression
*get_array_offset(struct expression
*expr
);
432 const char *show_state(struct smatch_state
*state
);
433 struct statement
*get_expression_statement(struct expression
*expr
);
434 struct expression
*strip_parens(struct expression
*expr
);
435 struct expression
*strip_expr(struct expression
*expr
);
436 struct expression
*strip_expr_set_parent(struct expression
*expr
);
437 void scoped_state(int my_id
, const char *name
, struct symbol
*sym
);
438 int is_error_return(struct expression
*expr
);
439 int getting_address(struct expression
*expr
);
440 int get_struct_and_member(struct expression
*expr
, const char **type
, const char **member
);
441 char *get_member_name(struct expression
*expr
);
442 char *get_fnptr_name(struct expression
*expr
);
443 int cmp_pos(struct position pos1
, struct position pos2
);
444 int positions_eq(struct position pos1
, struct position pos2
);
445 struct statement
*get_current_statement(void);
446 struct statement
*get_prev_statement(void);
447 struct expression
*get_last_expr_from_expression_stmt(struct expression
*expr
);
449 #define RETURN_VAR -1
450 #define LOCAL_SCOPE -2
451 #define FILE_SCOPE -3
452 #define GLOBAL_SCOPE -4
453 #define UNKNOWN_SCOPE -5
454 int get_param_key_from_var_sym(const char *name
, struct symbol
*sym
,
455 struct expression
*ret_expr
,
457 int get_param_key_from_sm(struct sm_state
*sm
, struct expression
*ret_expr
,
459 int get_param_num_from_sym(struct symbol
*sym
);
460 int get_param_num(struct expression
*expr
);
461 struct symbol
*get_param_sym_from_num(int num
);
463 int ms_since(struct timeval
*start
);
464 int parent_is_gone_var_sym(const char *name
, struct symbol
*sym
);
465 int parent_is_gone(struct expression
*expr
);
466 int invert_op(int op
);
467 int op_remove_assign(int op
);
468 int expr_equiv(struct expression
*one
, struct expression
*two
);
469 void push_int(struct int_stack
**stack
, int num
);
470 int pop_int(struct int_stack
**stack
);
473 struct symbol
*get_real_base_type(struct symbol
*sym
);
474 int type_bytes(struct symbol
*type
);
475 int array_bytes(struct symbol
*type
);
476 struct symbol
*get_pointer_type(struct expression
*expr
);
477 struct symbol
*get_type(struct expression
*expr
);
478 struct symbol
*get_final_type(struct expression
*expr
);
479 struct symbol
*get_promoted_type(struct symbol
*left
, struct symbol
*right
);
480 int type_signed(struct symbol
*base_type
);
481 int expr_unsigned(struct expression
*expr
);
482 int expr_signed(struct expression
*expr
);
483 int returns_unsigned(struct symbol
*base_type
);
484 int is_pointer(struct expression
*expr
);
485 int returns_pointer(struct symbol
*base_type
);
486 sval_t
sval_type_max(struct symbol
*base_type
);
487 sval_t
sval_type_min(struct symbol
*base_type
);
488 int nr_bits(struct expression
*expr
);
489 int is_void_pointer(struct expression
*expr
);
490 int is_char_pointer(struct expression
*expr
);
491 int is_string(struct expression
*expr
);
492 bool is_struct_ptr(struct symbol
*type
);
493 int is_static(struct expression
*expr
);
494 bool is_local_variable(struct expression
*expr
);
495 int types_equiv(struct symbol
*one
, struct symbol
*two
);
496 bool type_fits(struct symbol
*type
, struct symbol
*test
);
498 const char *global_static();
499 struct symbol
*cur_func_return_type(void);
500 struct symbol
*get_arg_type(struct expression
*fn
, int arg
);
501 struct symbol
*get_member_type_from_key(struct expression
*expr
, const char *key
);
502 struct symbol
*get_arg_type_from_key(struct expression
*fn
, int param
, struct expression
*arg
, const char *key
);
503 int is_struct(struct expression
*expr
);
504 char *type_to_str(struct symbol
*type
);
506 /* smatch_ignore.c */
507 void add_ignore(int owner
, const char *name
, struct symbol
*sym
);
508 int is_ignored(int owner
, const char *name
, struct symbol
*sym
);
509 void add_ignore_expr(int owner
, struct expression
*expr
);
510 int is_ignored_expr(int owner
, struct expression
*expr
);
513 struct var_sym
*alloc_var_sym(const char *var
, struct symbol
*sym
);
514 struct var_sym_list
*expr_to_vsl(struct expression
*expr
);
515 void add_var_sym(struct var_sym_list
**list
, const char *var
, struct symbol
*sym
);
516 void add_var_sym_expr(struct var_sym_list
**list
, struct expression
*expr
);
517 void del_var_sym(struct var_sym_list
**list
, const char *var
, struct symbol
*sym
);
518 int in_var_sym_list(struct var_sym_list
*list
, const char *var
, struct symbol
*sym
);
519 struct var_sym_list
*clone_var_sym_list(struct var_sym_list
*from_vsl
);
520 void merge_var_sym_list(struct var_sym_list
**dest
, struct var_sym_list
*src
);
521 struct var_sym_list
*combine_var_sym_lists(struct var_sym_list
*one
, struct var_sym_list
*two
);
522 int var_sym_lists_equiv(struct var_sym_list
*one
, struct var_sym_list
*two
);
523 void free_var_sym_list(struct var_sym_list
**list
);
524 void free_var_syms_and_list(struct var_sym_list
**list
);
527 struct tracker
*alloc_tracker(int owner
, const char *name
, struct symbol
*sym
);
528 void add_tracker(struct tracker_list
**list
, int owner
, const char *name
,
530 void add_tracker_expr(struct tracker_list
**list
, int owner
, struct expression
*expr
);
531 void del_tracker(struct tracker_list
**list
, int owner
, const char *name
,
533 int in_tracker_list(struct tracker_list
*list
, int owner
, const char *name
,
535 void free_tracker_list(struct tracker_list
**list
);
536 void free_trackers_and_list(struct tracker_list
**list
);
538 /* smatch_conditions */
539 int in_condition(void);
543 extern int __in_fake_assign
;
544 extern int __in_fake_parameter_assign
;
545 extern int __in_fake_struct_assign
;
546 extern int __in_fake_var_assign
;
547 extern int __fake_state_cnt
;
548 extern int in_fake_env
;
549 void smatch (struct string_list
*filelist
);
550 int inside_loop(void);
551 int definitely_inside_loop(void);
552 struct expression
*get_switch_expr(void);
553 int in_expression_statement(void);
554 void __process_post_op_stack(void);
555 void __split_expr(struct expression
*expr
);
556 void __split_label_stmt(struct statement
*stmt
);
557 void __split_stmt(struct statement
*stmt
);
558 extern int __in_function_def
;
559 extern int __in_unmatched_hook
;
560 extern int option_assume_loops
;
561 extern int option_two_passes
;
562 extern int option_no_db
;
563 extern int option_file_output
;
564 extern int option_time
;
565 extern struct expression_list
*big_expression_stack
;
566 extern struct expression_list
*big_condition_stack
;
567 extern struct statement_list
*big_statement_stack
;
568 int is_assigned_call(struct expression
*expr
);
569 int is_fake_assigned_call(struct expression
*expr
);
570 int inlinable(struct expression
*expr
);
571 extern int __inline_call
;
572 extern struct expression
*__inline_fn
;
573 extern int __in_pre_condition
;
574 extern int __bail_on_rest_of_function
;
575 extern struct statement
*__prev_stmt
;
576 extern struct statement
*__cur_stmt
;
577 extern struct statement
*__next_stmt
;
578 void init_fake_env(void);
579 void end_fake_env(void);
580 int time_parsing_function(void);
581 bool taking_too_long(void);
583 /* smatch_struct_assignment.c */
584 struct expression
*get_faked_expression(void);
585 void __fake_struct_member_assignments(struct expression
*expr
);
587 /* smatch_project.c */
588 int is_no_inline_function(const char *function
);
590 /* smatch_conditions */
591 void __split_whole_condition(struct expression
*expr
);
592 void __handle_logic(struct expression
*expr
);
593 int is_condition(struct expression
*expr
);
594 int __handle_condition_assigns(struct expression
*expr
);
595 int __handle_select_assigns(struct expression
*expr
);
596 int __handle_expr_statement_assigns(struct expression
*expr
);
598 /* smatch_implied.c */
599 struct range_list_stack
;
600 void param_limit_implications(struct expression
*expr
, int param
, char *key
, char *value
, struct stree
**implied
);
601 struct stree
*__implied_case_stree(struct expression
*switch_expr
,
602 struct range_list
*case_rl
,
603 struct range_list_stack
**remaining_cases
,
604 struct stree
**raw_stree
);
605 void overwrite_states_using_pool(struct sm_state
*gate_sm
, struct sm_state
*pool_sm
);
606 int assume(struct expression
*expr
);
607 void end_assume(void);
608 int impossible_assumption(struct expression
*left
, int op
, sval_t sval
);
611 bool has_dynamic_states(unsigned short owner
);
612 void set_dynamic_states(unsigned short owner
);
614 /* smatch_extras.c */
615 int in_warn_on_macro(void);
616 #define SMATCH_EXTRA 5 /* this is my_id from smatch extra set in smatch.c */
617 extern int RETURN_ID
;
624 #define MTAG_ALIAS_BIT (1ULL << 63)
625 #define MTAG_OFFSET_MASK 0xfffULL
626 #define MTAG_SEED 0xdead << 12
628 const extern unsigned long valid_ptr_min
;
629 extern unsigned long valid_ptr_max
;
630 extern const sval_t valid_ptr_min_sval
;
631 extern sval_t valid_ptr_max_sval
;
632 extern struct range_list
*valid_ptr_rl
;
633 void alloc_valid_ptr_rl(void);
635 static const sval_t array_min_sval
= {
639 static const sval_t array_max_sval
= {
641 {.value
= ULONG_MAX
- 4095},
643 static const sval_t text_seg_min
= {
647 static const sval_t text_seg_max
= {
649 {.value
= ULONG_MAX
- 4095},
651 static const sval_t data_seg_min
= {
655 static const sval_t data_seg_max
= {
657 {.value
= ULONG_MAX
- 4095},
659 static const sval_t bss_seg_min
= {
663 static const sval_t bss_seg_max
= {
665 {.value
= ULONG_MAX
- 4095},
667 static const sval_t stack_seg_min
= {
671 static const sval_t stack_seg_max
= {
673 {.value
= ULONG_MAX
- 4095},
675 static const sval_t kmalloc_seg_min
= {
679 static const sval_t kmalloc_seg_max
= {
681 {.value
= ULONG_MAX
- 4095},
683 static const sval_t vmalloc_seg_min
= {
687 static const sval_t vmalloc_seg_max
= {
689 {.value
= ULONG_MAX
- 4095},
691 static const sval_t fn_ptr_min
= {
695 static const sval_t fn_ptr_max
= {
697 {.value
= ULONG_MAX
- 4095},
700 char *get_other_name_sym(const char *name
, struct symbol
*sym
, struct symbol
**new_sym
);
701 char *map_call_to_other_name_sym(const char *name
, struct symbol
*sym
, struct symbol
**new_sym
);
702 char *map_long_to_short_name_sym(const char *name
, struct symbol
*sym
, struct symbol
**new_sym
, bool use_stack
);
704 #define STRLEN_MAX_RET 1010101
706 /* smatch_absolute.c */
707 int get_absolute_min_helper(struct expression
*expr
, sval_t
*sval
);
708 int get_absolute_max_helper(struct expression
*expr
, sval_t
*sval
);
710 /* smatch_type_value.c */
711 int get_db_type_rl(struct expression
*expr
, struct range_list
**rl
);
712 /* smatch_data_val.c */
713 int get_mtag_rl(struct expression
*expr
, struct range_list
**rl
);
714 /* smatch_array_values.c */
715 int get_array_rl(struct expression
*expr
, struct range_list
**rl
);
717 /* smatch_states.c */
718 struct stree
*__swap_cur_stree(struct stree
*stree
);
719 void __push_fake_cur_stree();
720 struct stree
*__pop_fake_cur_stree();
721 void __free_fake_cur_stree();
722 void __set_fake_cur_stree_fast(struct stree
*stree
);
723 void __pop_fake_cur_stree_fast(void);
724 void __merge_stree_into_cur(struct stree
*stree
);
726 int unreachable(void);
727 void __set_cur_stree_readonly(void);
728 void __set_cur_stree_writable(void);
729 void __set_sm(struct sm_state
*sm
);
730 void __set_sm_cur_stree(struct sm_state
*sm
);
731 void __set_sm_fake_stree(struct sm_state
*sm
);
732 void __set_true_false_sm(struct sm_state
*true_state
,
733 struct sm_state
*false_state
);
734 void nullify_path(void);
735 void __match_nullify_path_hook(const char *fn
, struct expression
*expr
,
737 void __unnullify_path(void);
738 int __path_is_null(void);
739 void save_all_states(void);
740 void restore_all_states(void);
741 void free_goto_stack(void);
742 void clear_all_states(void);
744 struct sm_state
*get_sm_state(int owner
, const char *name
,
746 struct sm_state
*get_sm_state_expr(int owner
, struct expression
*expr
);
747 void __push_true_states(void);
748 void __use_false_states(void);
749 void __discard_false_states(void);
750 void __merge_false_states(void);
751 void __merge_true_states(void);
753 void __negate_cond_stacks(void);
754 void __use_pre_cond_states(void);
755 void __use_cond_true_states(void);
756 void __use_cond_false_states(void);
757 void __push_cond_stacks(void);
758 void __fold_in_set_states(void);
759 void __free_set_states(void);
760 struct stree
*__copy_cond_true_states(void);
761 struct stree
*__copy_cond_false_states(void);
762 struct stree
*__pop_cond_true_stack(void);
763 struct stree
*__pop_cond_false_stack(void);
764 void __and_cond_states(void);
765 void __or_cond_states(void);
766 void __save_pre_cond_states(void);
767 void __discard_pre_cond_states(void);
768 struct stree
*__get_true_states(void);
769 struct stree
*__get_false_states(void);
770 void __use_cond_states(void);
771 extern struct state_list
*__last_base_slist
;
773 void __push_continues(void);
774 void __discard_continues(void);
775 void __process_continues(void);
776 void __merge_continues(void);
778 void __push_breaks(void);
779 void __process_breaks(void);
780 int __has_breaks(void);
781 void __merge_breaks(void);
782 void __use_breaks(void);
784 void __save_switch_states(struct expression
*switch_expr
);
785 void __discard_switches(void);
786 int have_remaining_cases(void);
787 void __merge_switches(struct expression
*switch_expr
, struct range_list
*case_rl
);
788 void __push_default(void);
789 void __set_default(void);
790 int __pop_default(void);
792 void __push_conditions(void);
793 void __discard_conditions(void);
795 void __save_gotos(const char *name
, struct symbol
*sym
);
796 void __merge_gotos(const char *name
, struct symbol
*sym
);
798 void __discard_fake_states(void);
800 void __print_cur_stree(void);
801 bool __print_states(const char *owner
);
802 typedef void (check_tracker_hook
)(int owner
, const char *name
, struct symbol
*sym
, struct smatch_state
*state
);
803 void add_check_tracker(const char *check_name
, check_tracker_hook
*fn
);
806 void __pass_to_client(void *data
, enum hook_type type
);
807 void __pass_case_to_client(struct expression
*switch_expr
,
808 struct range_list
*rl
);
809 int __has_merge_function(int client_id
);
810 struct smatch_state
*__client_merge_function(int owner
,
811 struct smatch_state
*s1
,
812 struct smatch_state
*s2
);
813 struct smatch_state
*__client_unmatched_state_function(struct sm_state
*sm
);
814 void call_pre_merge_hook(struct sm_state
*cur
, struct sm_state
*other
);
815 void __push_scope_hooks(void);
816 void __call_scope_hooks(void);
818 /* smatch_function_hooks.c */
819 void create_function_hook_hash(void);
820 void __match_initializer_call(struct symbol
*sym
);
826 * Changing these numbers is a pain. Don't do it. If you ever use a
827 * number it can't be re-used right away so there may be gaps.
828 * We select these in order by type so if the order matters, then give
829 * it a number below 100-999,9000-9999 ranges. */
841 ABSOLUTE_LIMITS
= 1010,
855 UNTRACKED_PARAM
= 1023,
861 COMPARE_LIMIT
= 1028,
862 PARAM_COMPARE
= 1029,
865 CONSTRAINT_REQUIRED
= 1033,
874 /* put random temporary stuff in the 7000-7999 range for testing */
876 USER_DATA_SET
= 9017,
880 NO_OVERFLOW_SIMPLE
= 8019,
884 LOCK_RESTORED
= 9023,
886 KNOWN_UNLOCKED
= 9025,
891 NO_SIDE_EFFECT
= 8025,
894 ARRAYSIZE_ARG
= 8033,
909 extern struct sqlite3
*smatch_db
;
910 extern struct sqlite3
*mem_db
;
911 extern struct sqlite3
*cache_db
;
913 bool db_incomplete(void);
914 void db_ignore_states(int id
);
915 void select_caller_info_hook(void (*callback
)(const char *name
, struct symbol
*sym
, char *key
, char *value
), int type
);
916 void add_member_info_callback(int owner
, void (*callback
)(struct expression
*call
, int param
, char *printed_name
, struct sm_state
*sm
));
917 void add_caller_info_callback(int owner
, void (*callback
)(struct expression
*call
, int param
, char *printed_name
, struct sm_state
*sm
));
918 void add_return_info_callback(int owner
,
919 void (*callback
)(int return_id
, char *return_ranges
,
920 struct expression
*returned_expr
,
922 const char *printed_name
,
923 struct sm_state
*sm
));
924 void add_split_return_callback(void (*fn
)(int return_id
, char *return_ranges
, struct expression
*returned_expr
));
925 void add_returned_member_callback(int owner
, void (*callback
)(int return_id
, char *return_ranges
, struct expression
*expr
, char *printed_name
, struct smatch_state
*state
));
926 void select_call_implies_hook(int type
, void (*callback
)(struct expression
*call
, struct expression
*arg
, char *key
, char *value
));
927 void select_return_implies_hook(int type
, void (*callback
)(struct expression
*call
, struct expression
*arg
, char *key
, char *value
));
928 struct range_list
*db_return_vals(struct expression
*expr
);
929 struct range_list
*db_return_vals_from_str(const char *fn_name
);
930 struct range_list
*db_return_vals_no_args(struct expression
*expr
);
931 char *return_state_to_var_sym(struct expression
*expr
, int param
, const char *key
, struct symbol
**sym
);
932 char *get_chunk_from_key(struct expression
*arg
, char *key
, struct symbol
**sym
, struct var_sym_list
**vsl
);
933 char *get_variable_from_key(struct expression
*arg
, const char *key
, struct symbol
**sym
);
934 char *get_name_sym_from_key(struct expression
*expr
, int param
, const char *key
, struct symbol
**sym
);
935 const char *state_name_to_param_name(const char *state_name
, const char *param_name
);
936 const char *get_param_name_var_sym(const char *name
, struct symbol
*sym
);
937 const char *get_param_name(struct sm_state
*sm
);
938 const char *get_mtag_name_var_sym(const char *state_name
, struct symbol
*sym
);
939 const char *get_mtag_name_expr(struct expression
*expr
);
940 char *get_data_info_name(struct expression
*expr
);
941 char *sm_to_arg_name(struct expression
*expr
, struct sm_state
*sm
);
942 int is_recursive_member(const char *param_name
);
944 char *escape_newlines(const char *str
);
945 void sql_exec(struct sqlite3
*db
, int (*callback
)(void*, int, char**, char**), void *data
, const char *sql
);
947 #define sql_helper(db, call_back, data, sql...) \
949 char sql_txt[1024]; \
951 sqlite3_snprintf(sizeof(sql_txt), sql_txt, sql); \
952 db_debug("debug: %s\n", sql_txt); \
953 sql_exec(db, call_back, data, sql_txt); \
957 #define run_sql(call_back, data, sql...) \
961 sql_helper(smatch_db, call_back, data, sql); \
964 #define mem_sql(call_back, data, sql...) \
965 sql_helper(mem_db, call_back, data, sql)
967 #define cache_sql(call_back, data, sql...) \
968 sql_helper(cache_db, call_back, data, sql)
970 #define sql_insert_helper(table, db, ignore, late, values...) \
972 struct sqlite3 *_db = db; \
974 if (__inline_fn && !_db) \
978 char *err, *p = buf; \
981 p += snprintf(p, buf + sizeof(buf) - p, \
982 "insert %sinto %s values (", \
983 ignore ? "or ignore " : "", #table); \
984 p += snprintf(p, buf + sizeof(buf) - p, values); \
985 p += snprintf(p, buf + sizeof(buf) - p, ");"); \
986 db_debug("mem-db: %s\n", buf); \
987 rc = sqlite3_exec(_db, buf, NULL, NULL, &err); \
988 if (rc != SQLITE_OK) { \
989 sm_ierror("SQL error #2: %s", err); \
990 sm_ierror("SQL: '%s'", buf); \
996 FILE *tmp_fd = sm_outfd; \
997 sm_outfd = sql_outfd; \
999 sm_printf("SQL%s: insert %sinto " #table " values(", \
1000 late ? "_late" : "", ignore ? "or ignore " : ""); \
1001 sm_printf(values); \
1002 sm_printf(");\n"); \
1003 sm_outfd = tmp_fd; \
1007 #define sql_insert(table, values...) sql_insert_helper(table, 0, 0, 0, values);
1008 #define sql_insert_or_ignore(table, values...) sql_insert_helper(table, 0, 1, 0, values);
1009 #define sql_insert_late(table, values...) sql_insert_helper(table, 0, 0, 1, values);
1010 #define sql_insert_cache(table, values...) sql_insert_helper(table, cache_db, 1, 0, values);
1012 char *get_static_filter(struct symbol
*sym
);
1014 void sql_insert_return_states(int return_id
, const char *return_ranges
,
1015 int type
, int param
, const char *key
, const char *value
);
1016 void sql_insert_caller_info(struct expression
*call
, int type
, int param
,
1017 const char *key
, const char *value
);
1018 void sql_insert_function_ptr(const char *fn
, const char *struct_name
);
1019 void sql_insert_return_values(const char *return_values
);
1020 void sql_insert_return_implies(int type
, int param
, const char *key
, const char *value
);
1021 void sql_insert_function_type_size(const char *member
, const char *ranges
);
1022 void sql_insert_function_type_info(int type
, const char *struct_type
, const char *member
, const char *value
);
1023 void sql_insert_type_info(int type
, const char *member
, const char *value
);
1024 void sql_insert_local_values(const char *name
, const char *value
);
1025 void sql_insert_function_type_value(const char *type
, const char *value
);
1026 void sql_insert_function_type(int param
, const char *value
);
1027 void sql_insert_parameter_name(int param
, const char *value
);
1028 void sql_insert_data_info(struct expression
*data
, int type
, const char *value
);
1029 void sql_insert_data_info_var_sym(const char *var
, struct symbol
*sym
, int type
, const char *value
);
1030 void sql_save_constraint(const char *con
);
1031 void sql_save_constraint_required(const char *data
, int op
, const char *limit
);
1032 void sql_copy_constraint_required(const char *new_limit
, const char *old_limit
);
1033 void sql_insert_fn_ptr_data_link(const char *ptr
, const char *data
);
1034 void sql_insert_fn_data_link(struct expression
*fn
, int type
, int param
, const char *key
, const char *value
);
1035 void sql_insert_mtag_about(mtag_t tag
, const char *left_name
, const char *right_name
);
1036 void sql_insert_mtag_info(mtag_t tag
, int type
, const char *value
);
1037 void sql_insert_mtag_map(mtag_t container
, int container_offset
, mtag_t tag
, int tag_offset
);
1038 void sql_insert_mtag_alias(mtag_t orig
, mtag_t alias
);
1039 int mtag_map_select_container(mtag_t tag
, int container_offset
, mtag_t
*container
);
1040 int mtag_map_select_tag(mtag_t container
, int offset
, mtag_t
*tag
);
1041 struct smatch_state
*get_mtag_return(struct expression
*expr
, struct smatch_state
*state
);
1042 struct range_list
*swap_mtag_seed(struct expression
*expr
, struct range_list
*rl
);
1044 void sql_select_return_states(const char *cols
, struct expression
*call
,
1045 int (*callback
)(void*, int, char**, char**), void *info
);
1046 void sql_select_call_implies(const char *cols
, struct expression
*call
,
1047 int (*callback
)(void*, int, char**, char**));
1049 void open_smatch_db(char *db_file
);
1051 /* smatch_files.c */
1052 int open_data_file(const char *filename
);
1053 int open_schema_file(const char *schema
);
1054 struct token
*get_tokens_file(const char *filename
);
1057 extern char *option_debug_check
;
1058 extern char *option_project_str
;
1059 extern char *bin_dir
;
1060 extern char *data_dir
;
1061 extern int option_no_data
;
1062 extern int option_full_path
;
1063 extern int option_call_tree
;
1064 extern int num_checks
;
1070 PROJ_ILLUMOS_KERNEL
,
1074 extern enum project_type option_project
;
1075 const char *check_name(unsigned short id
);
1076 int id_from_name(const char *name
);
1079 /* smatch_buf_size.c */
1080 int get_array_size(struct expression
*expr
);
1081 int get_array_size_bytes(struct expression
*expr
);
1082 int get_array_size_bytes_min(struct expression
*expr
);
1083 int get_array_size_bytes_max(struct expression
*expr
);
1084 struct range_list
*get_array_size_bytes_rl(struct expression
*expr
);
1085 int get_real_array_size(struct expression
*expr
);
1086 int last_member_is_resizable(struct symbol
*type
);
1087 /* smatch_strlen.c */
1088 int get_implied_strlen(struct expression
*expr
, struct range_list
**rl
);
1089 int get_size_from_strlen(struct expression
*expr
);
1091 /* smatch_capped.c */
1092 int is_capped(struct expression
*expr
);
1093 int is_capped_var_sym(const char *name
, struct symbol
*sym
);
1095 /* smatch_kernel_user_data.c */
1096 int is_user_macro(struct expression
*expr
);
1097 int is_capped_user_data(struct expression
*expr
);
1098 int implied_user_data(struct expression
*expr
, struct range_list
**rl
);
1099 struct stree
*get_user_stree(void);
1100 int get_user_rl(struct expression
*expr
, struct range_list
**rl
);
1101 int is_user_rl(struct expression
*expr
);
1102 int get_user_rl_var_sym(const char *name
, struct symbol
*sym
, struct range_list
**rl
);
1103 bool user_rl_capped(struct expression
*expr
);
1104 struct range_list
*var_user_rl(struct expression
*expr
);
1105 bool we_pass_user_data(struct expression
*call
);
1106 /* smatch_points_to_user_data.c */
1107 bool is_user_data_fn(struct symbol
*fn
);
1108 bool is_skb_data(struct expression
*expr
);
1109 bool points_to_user_data(struct expression
*expr
);
1110 void set_points_to_user_data(struct expression
*expr
);
1112 /* check_locking.c */
1113 void print_held_locks();
1115 /* check_assigned_expr.c */
1116 extern int check_assigned_expr_id
;
1117 struct expression
*get_assigned_expr(struct expression
*expr
);
1118 struct expression
*get_assigned_expr_name_sym(const char *name
, struct symbol
*sym
);
1119 /* smatch_return_to_param.c */
1120 void __add_return_to_param_mapping(struct expression
*assign
, const char *return_string
);
1121 char *map_call_to_param_name_sym(struct expression
*expr
, struct symbol
**sym
);
1123 /* smatch_comparison.c */
1124 extern int comparison_id
;
1125 #define UNKNOWN_COMPARISON 0
1126 #define IMPOSSIBLE_COMPARISON -1
1127 struct compare_data
{
1128 /* The ->left and ->right expression pointers might be NULL (I'm lazy) */
1129 struct expression
*left
;
1130 const char *left_var
;
1131 struct var_sym_list
*left_vsl
;
1133 struct expression
*right
;
1134 const char *right_var
;
1135 struct var_sym_list
*right_vsl
;
1137 DECLARE_ALLOCATOR(compare_data
);
1138 struct smatch_state
*alloc_compare_state(
1139 struct expression
*left
,
1140 const char *left_var
, struct var_sym_list
*left_vsl
,
1142 struct expression
*right
,
1143 const char *right_var
, struct var_sym_list
*right_vsl
);
1144 int comparison_intersection(int orig
, int op
);
1145 int merge_comparisons(int one
, int two
);
1146 int combine_comparisons(int left_compare
, int right_compare
);
1147 int state_to_comparison(struct smatch_state
*state
);
1148 struct smatch_state
*merge_compare_states(struct smatch_state
*s1
, struct smatch_state
*s2
);
1149 int get_comparison(struct expression
*left
, struct expression
*right
);
1150 int get_comparison_no_extra(struct expression
*a
, struct expression
*b
);
1151 int get_comparison_strings(const char *one
, const char *two
);
1152 int possible_comparison(struct expression
*a
, int comparison
, struct expression
*b
);
1153 struct state_list
*get_all_comparisons(struct expression
*expr
);
1154 struct state_list
*get_all_possible_equal_comparisons(struct expression
*expr
);
1155 void __add_return_comparison(struct expression
*call
, const char *range
);
1156 void __add_comparison_info(struct expression
*expr
, struct expression
*call
, const char *range
);
1157 char *get_printed_param_name(struct expression
*call
, const char *param_name
, struct symbol
*param_sym
);
1158 char *name_sym_to_param_comparison(const char *name
, struct symbol
*sym
);
1159 char *expr_equal_to_param(struct expression
*expr
, int ignore
);
1160 char *expr_lte_to_param(struct expression
*expr
, int ignore
);
1161 char *expr_param_comparison(struct expression
*expr
, int ignore
);
1162 int flip_comparison(int op
);
1163 int negate_comparison(int op
);
1164 int remove_unsigned_from_comparison(int op
);
1165 int param_compare_limit_is_impossible(struct expression
*expr
, int left_param
, char *left_key
, char *value
);
1166 void filter_by_comparison(struct range_list
**rl
, int comparison
, struct range_list
*right
);
1167 void __compare_param_limit_hook(struct expression
*left_expr
, struct expression
*right_expr
,
1168 const char *state_name
,
1169 struct smatch_state
*true_state
, struct smatch_state
*false_state
);
1170 int impossibly_high_comparison(struct expression
*expr
);
1173 sval_t
*sval_alloc(sval_t sval
);
1174 sval_t
*sval_alloc_permanent(sval_t sval
);
1175 sval_t
sval_blank(struct expression
*expr
);
1176 sval_t
sval_type_val(struct symbol
*type
, long long val
);
1177 sval_t
sval_type_fval(struct symbol
*type
, long double fval
);
1178 sval_t
sval_from_val(struct expression
*expr
, long long val
);
1179 sval_t
sval_from_fval(struct expression
*expr
, long double fval
);
1180 int sval_is_ptr(sval_t sval
);
1181 bool sval_is_fp(sval_t sval
);
1182 int sval_unsigned(sval_t sval
);
1183 int sval_signed(sval_t sval
);
1184 int sval_bits(sval_t sval
);
1185 int sval_bits_used(sval_t sval
);
1186 int sval_is_negative(sval_t sval
);
1187 int sval_is_positive(sval_t sval
);
1188 int sval_is_min(sval_t sval
);
1189 int sval_is_max(sval_t sval
);
1190 int sval_is_a_min(sval_t sval
);
1191 int sval_is_a_max(sval_t sval
);
1192 int sval_is_negative_min(sval_t sval
);
1193 int sval_cmp_t(struct symbol
*type
, sval_t one
, sval_t two
);
1194 int sval_cmp_val(sval_t one
, long long val
);
1195 sval_t
sval_min(sval_t one
, sval_t two
);
1196 sval_t
sval_max(sval_t one
, sval_t two
);
1197 int sval_too_low(struct symbol
*type
, sval_t sval
);
1198 int sval_too_high(struct symbol
*type
, sval_t sval
);
1199 int sval_fits(struct symbol
*type
, sval_t sval
);
1200 sval_t
sval_cast(struct symbol
*type
, sval_t sval
);
1201 sval_t
sval_preop(sval_t sval
, int op
);
1202 sval_t
sval_binop(sval_t left
, int op
, sval_t right
);
1203 int sval_binop_overflows(sval_t left
, int op
, sval_t right
);
1204 int sval_binop_overflows_no_sign(sval_t left
, int op
, sval_t right
);
1205 int find_first_zero_bit(unsigned long long uvalue
);
1206 int sm_fls64(unsigned long long uvalue
);
1207 unsigned long long fls_mask(unsigned long long uvalue
);
1208 unsigned long long sval_fls_mask(sval_t sval
);
1209 const char *sval_to_str(sval_t sval
);
1210 const char *sval_to_str_or_err_ptr(sval_t sval
);
1211 const char *sval_to_numstr(sval_t sval
);
1212 sval_t
ll_to_sval(long long val
);
1214 /* smatch_string_list.c */
1215 int list_has_string(struct string_list
*str_list
, const char *str
);
1216 int insert_string(struct string_list
**str_list
, const char *str
);
1217 struct string_list
*clone_str_list(struct string_list
*orig
);
1218 struct string_list
*combine_string_lists(struct string_list
*one
, struct string_list
*two
);
1220 /* smatch_start_states.c */
1221 struct stree
*get_start_states(void);
1223 /* smatch_recurse.c */
1224 int has_symbol(struct expression
*expr
, struct symbol
*sym
);
1225 int has_variable(struct expression
*expr
, struct expression
*var
);
1226 int has_inc_dec(struct expression
*expr
);
1228 /* smatch_stored_conditions.c */
1229 struct smatch_state
*get_stored_condition(struct expression
*expr
);
1230 struct expression_list
*get_conditions(struct expression
*expr
);
1231 struct sm_state
*stored_condition_implication_hook(struct expression
*expr
,
1232 struct state_list
**true_stack
,
1233 struct state_list
**false_stack
);
1234 /* smatch_parsed_conditions.c */
1235 struct sm_state
*parsed_condition_implication_hook(struct expression
*expr
,
1236 struct state_list
**true_stack
,
1237 struct state_list
**false_stack
);
1238 /* smatch_comparison.c */
1239 struct sm_state
*comparison_implication_hook(struct expression
*expr
,
1240 struct state_list
**true_stack
,
1241 struct state_list
**false_stack
);
1243 /* check_string_len.c */
1244 int get_formatted_string_size(struct expression
*call
, int arg
);
1245 int get_formatted_string_min_size(struct expression
*call
, int arg
);
1247 /* smatch_param_set.c */
1248 int param_was_set(struct expression
*expr
);
1249 int param_was_set_var_sym(const char *name
, struct symbol
*sym
);
1250 void print_limited_param_set(int return_id
, char *return_ranges
, struct expression
*expr
);
1251 /* smatch_param_filter.c */
1252 int param_has_filter_data(struct sm_state
*sm
);
1254 /* smatch_links.c */
1255 void set_up_link_functions(int id
, int linkid
);
1256 struct smatch_state
*merge_link_states(struct smatch_state
*s1
, struct smatch_state
*s2
);
1257 void store_link(int link_id
, const char *name
, struct symbol
*sym
, const char *link_name
, struct symbol
*link_sym
);
1259 /* check_buf_comparison */
1260 const char *limit_type_str(unsigned int limit_type
);
1261 struct expression
*get_size_variable(struct expression
*buf
, int *limit_type
);
1262 struct expression
*get_array_variable(struct expression
*size
);
1263 int buf_comparison_index_ok(struct expression
*expr
);
1265 /* smatch_untracked_param.c */
1266 void mark_untracked(struct expression
*expr
, int param
, const char *key
, const char *value
);
1267 void add_untracked_param_hook(void (func
)(struct expression
*call
, int param
));
1268 void add_lost_param_hook(void (func
)(struct expression
*call
, int param
));
1269 void mark_all_params_untracked(int return_id
, char *return_ranges
, struct expression
*expr
);
1271 /* smatch_strings.c */
1272 struct state_list
*get_strings(struct expression
*expr
);
1273 struct expression
*fake_string_from_mtag(mtag_t tag
);
1275 /* smatch_estate.c */
1276 int estate_get_single_value(struct smatch_state
*state
, sval_t
*sval
);
1278 /* smatch_address.c */
1279 int get_address_rl(struct expression
*expr
, struct range_list
**rl
);
1280 int get_member_offset(struct symbol
*type
, const char *member_name
);
1281 int get_member_offset_from_deref(struct expression
*expr
);
1283 /* for now this is in smatch_used_parameter.c */
1284 void __get_state_hook(int owner
, const char *name
, struct symbol
*sym
);
1286 /* smatch_buf_comparison.c */
1287 int db_var_is_array_limit(struct expression
*array
, const char *name
, struct var_sym_list
*vsl
);
1289 struct range_list
*get_fs(void);
1291 struct stree
*get_all_return_states(void);
1292 struct stree_stack
*get_all_return_strees(void);
1293 int on_atomic_dec_path(void);
1294 int was_inced(const char *name
, struct symbol
*sym
);
1295 void set_refcount_inc(char *name
, struct symbol
*sym
);
1296 void set_refcount_dec(char *name
, struct symbol
*sym
);
1298 /* smatch_constraints.c */
1299 char *get_constraint_str(struct expression
*expr
);
1300 struct constraint_list
*get_constraints(struct expression
*expr
);
1301 char *unmet_constraint(struct expression
*data
, struct expression
*offset
);
1302 char *get_required_constraint(const char *data_str
);
1304 /* smatch_container_of.c */
1305 int get_param_from_container_of(struct expression
*expr
);
1306 int get_offset_from_container_of(struct expression
*expr
);
1307 char *get_container_name(struct expression
*container
, struct expression
*expr
);
1310 mtag_t
str_to_mtag(const char *str
);
1311 int get_string_mtag(struct expression
*expr
, mtag_t
*tag
);
1312 int get_toplevel_mtag(struct symbol
*sym
, mtag_t
*tag
);
1313 int create_mtag_alias(mtag_t tag
, struct expression
*expr
, mtag_t
*new);
1314 int expr_to_mtag_offset(struct expression
*expr
, mtag_t
*tag
, int *offset
);
1315 void update_mtag_data(struct expression
*expr
, struct smatch_state
*state
);
1316 int get_mtag_sval(struct expression
*expr
, sval_t
*sval
);
1318 /* Trinity fuzzer stuff */
1319 const char *get_syscall_arg_type(struct symbol
*sym
);
1321 /* smatch_bit_info.c */
1322 struct bit_info
*rl_to_binfo(struct range_list
*rl
);
1323 struct bit_info
*get_bit_info(struct expression
*expr
);
1324 struct bit_info
*get_bit_info_var_sym(const char *name
, struct symbol
*sym
);
1325 /* smatch_mem_tracker.c */
1326 extern int option_mem
;
1327 unsigned long get_mem_kb(void);
1328 unsigned long get_max_memory(void);
1330 /* check_is_nospec.c */
1331 bool is_nospec(struct expression
*expr
);
1332 long get_stmt_cnt(void);
1334 /* smatch_nul_terminator.c */
1335 bool is_nul_terminated_var_sym(const char *name
, struct symbol
*sym
);
1336 bool is_nul_terminated(struct expression
*expr
);
1337 /* check_kernel.c */
1338 bool is_ignored_kernel_data(const char *name
);
1340 bool is_fresh_alloc_var_sym(const char *var
, struct symbol
*sym
);
1341 bool is_fresh_alloc(struct expression
*expr
);
1342 bool is_freed_var_sym(const char *name
, struct symbol
*sym
);
1343 void track_freed_param(struct expression
*expr
, struct smatch_state
*state
);
1344 void track_freed_param_var_sym(const char *name
, struct symbol
*sym
,
1345 struct smatch_state
*state
);
1347 static inline bool type_is_ptr(struct symbol
*type
)
1350 (type
->type
== SYM_PTR
||
1351 type
->type
== SYM_ARRAY
||
1352 type
->type
== SYM_FN
);
1355 static inline bool type_is_fp(struct symbol
*type
)
1358 (type
== &float_ctype
||
1359 type
== &double_ctype
||
1360 type
== &ldouble_ctype
);
1363 static inline int type_bits(struct symbol
*type
)
1367 if (type_is_ptr(type
))
1368 return bits_in_pointer
;
1369 if (!type
->examined
)
1370 examine_symbol_type(type
);
1371 return type
->bit_size
;
1374 static inline int type_unsigned(struct symbol
*base_type
)
1378 if (is_ptr_type(base_type
))
1380 if (base_type
->ctype
.modifiers
& MOD_UNSIGNED
)
1385 static inline int type_positive_bits(struct symbol
*type
)
1389 if (is_ptr_type(type
))
1390 return bits_in_pointer
;
1391 if (type_unsigned(type
))
1392 return type_bits(type
);
1393 return type_bits(type
) - 1;
1396 static inline int sval_positive_bits(sval_t sval
)
1398 return type_positive_bits(sval
.type
);
1402 * Returns -1 if one is smaller, 0 if they are the same and 1 if two is larger.
1405 static inline int fp_cmp(sval_t one
, sval_t two
)
1407 struct symbol
*type
;
1409 if (sval_is_fp(one
) && sval_is_fp(two
))
1410 type
= type_bits(one
.type
) > type_bits(two
.type
) ? one
.type
: two
.type
;
1411 else if (sval_is_fp(one
))
1416 one
= sval_cast(type
, one
);
1417 two
= sval_cast(type
, two
);
1419 if (one
.type
== &float_ctype
) {
1420 if (one
.fvalue
< two
.fvalue
)
1422 if (one
.fvalue
== two
.fvalue
)
1426 if (one
.type
== &double_ctype
) {
1427 if (one
.dvalue
< two
.dvalue
)
1429 if (one
.dvalue
== two
.dvalue
)
1433 if (one
.type
== &ldouble_ctype
) {
1434 if (one
.ldvalue
< two
.ldvalue
)
1436 if (one
.ldvalue
== two
.ldvalue
)
1440 sm_perror("bad type in fp_cmp(): %s", type_to_str(type
));
1444 static inline int sval_cmp(sval_t one
, sval_t two
)
1446 struct symbol
*type
;
1448 if (sval_is_fp(one
) || sval_is_fp(two
))
1449 return fp_cmp(one
, two
);
1452 if (sval_positive_bits(two
) > sval_positive_bits(one
))
1454 if (type_bits(type
) < 31)
1457 one
= sval_cast(type
, one
);
1458 two
= sval_cast(type
, two
);
1460 if (type_unsigned(type
)) {
1461 if (one
.uvalue
< two
.uvalue
)
1463 if (one
.uvalue
== two
.uvalue
)
1467 /* fix me handle type promotion and unsigned values */
1468 if (one
.value
< two
.value
)
1470 if (one
.value
== two
.value
)
1475 #endif /* !SMATCH_H_ */