smatch.h

   1 /*
   2  * sparse/smatch.h
   3  *
   4  * Copyright (C) 2006 Dan Carpenter.
   5  *
   6  *  Licensed under the Open Software License version 1.1
   7  *
   8  */
   9
  10 #ifndef         SMATCH_H_
  11 # define        SMATCH_H_
  12
  13 #include <stdio.h>
  14 #include <string.h>
  15 #include <limits.h>
  16 #include "lib.h"
  17 #include "allocate.h"
  18 #include "parse.h"
  19 #include "expression.h"
  20
  21 typedef struct {
  22         struct symbol *type;
  23         union {
  24                 long long value;
  25                 unsigned long long uvalue;
  26         };
  27 } sval_t;
  28
  29 struct smatch_state {
  30         const char *name;
  31         void *data;
  32 };
  33 #define STATE(_x) static struct smatch_state _x = { .name = #_x }
  34 extern struct smatch_state undefined;
  35 extern struct smatch_state merged;
  36 extern struct smatch_state true_state;
  37 extern struct smatch_state false_state;
  38 DECLARE_ALLOCATOR(smatch_state);
  39
  40 static inline void *INT_PTR(int i)
  41 {
  42         return (void *)(long)i;
  43 }
  44
  45 static inline int PTR_INT(void *p)
  46 {
  47         return (int)(long)p;
  48 }
  49
  50 struct sm_state {
  51         unsigned short owner;
  52         unsigned int merged:1;
  53         unsigned int implied:1;
  54         const char *name;
  55         struct symbol *sym;
  56         struct smatch_state *state;
  57         unsigned int line;
  58         struct state_list *pool;
  59         struct sm_state *left;
  60         struct sm_state *right;
  61         unsigned int nr_children;
  62         struct state_list *possible;
  63 };
  64
  65 struct tracker {
  66         int owner;
  67         char *name;
  68         struct symbol *sym;
  69 };
  70 DECLARE_ALLOCATOR(tracker);
  71 DECLARE_PTR_LIST(tracker_list, struct tracker);
  72
  73 enum hook_type {
  74         EXPR_HOOK,
  75         STMT_HOOK,
  76         SYM_HOOK,
  77         STRING_HOOK,
  78         DECLARATION_HOOK,
  79         ASSIGNMENT_HOOK,
  80         RAW_ASSIGNMENT_HOOK,
  81         GLOBAL_ASSIGNMENT_HOOK,
  82         LOGIC_HOOK,
  83         CONDITION_HOOK,
  84         PRELOOP_HOOK,
  85         SELECT_HOOK,
  86         WHOLE_CONDITION_HOOK,
  87         FUNCTION_CALL_HOOK,
  88         CALL_HOOK_AFTER_INLINE,
  89         CALL_ASSIGNMENT_HOOK,
  90         MACRO_ASSIGNMENT_HOOK,
  91         BINOP_HOOK,
  92         OP_HOOK,
  93         DEREF_HOOK,
  94         CASE_HOOK,
  95         ASM_HOOK,
  96         CAST_HOOK,
  97         SIZEOF_HOOK,
  98         BASE_HOOK,
  99         FUNC_DEF_HOOK,
 100         AFTER_DEF_HOOK,
 101         END_FUNC_HOOK,
 102         AFTER_FUNC_HOOK,
 103         RETURN_HOOK,
 104         INLINE_FN_START,
 105         INLINE_FN_END,
 106         END_FILE_HOOK,
 107 };
 108
 109 #define TRUE 1
 110 #define FALSE 0
 111
 112 struct range_list;
 113
 114 void add_hook(void *func, enum hook_type type);
 115 typedef struct smatch_state *(merge_func_t)(struct smatch_state *s1, struct smatch_state *s2);
 116 typedef struct smatch_state *(unmatched_func_t)(struct sm_state *state);
 117 void add_merge_hook(int client_id, merge_func_t *func);
 118 void add_unmatched_state_hook(int client_id, unmatched_func_t *func);
 119 typedef void (scope_hook)(void *data);
 120 void add_scope_hook(scope_hook *hook, void *data);
 121 typedef void (func_hook)(const char *fn, struct expression *expr, void *data);
 122 typedef void (implication_hook)(const char *fn, struct expression *call_expr,
 123                                 struct expression *assign_expr, void *data);
 124 typedef void (return_implies_hook)(struct expression *call_expr,
 125                                    int param, char *key, char *value);
 126 typedef int (implied_return_hook)(struct expression *call_expr, void *info, struct range_list **rl);
 127 void add_function_hook(const char *look_for, func_hook *call_back, void *data);
 128
 129 void add_function_assign_hook(const char *look_for, func_hook *call_back,
 130                               void *info);
 131 void add_implied_return_hook(const char *look_for,
 132                              implied_return_hook *call_back,
 133                              void *info);
 134 void add_macro_assign_hook(const char *look_for, func_hook *call_back,
 135                               void *info);
 136 void add_macro_assign_hook_extra(const char *look_for, func_hook *call_back,
 137                               void *info);
 138 void return_implies_state(const char *look_for, long long start, long long end,
 139                          implication_hook *call_back, void *info);
 140 void add_db_return_states_callback(int type, return_implies_hook *callback);
 141 void add_db_return_states_before(void (*fn)(void));
 142 void add_db_return_states_after(void (*fn)(void));
 143 int get_implied_return(struct expression *expr, struct range_list **rl);
 144
 145 typedef void (modification_hook)(struct sm_state *sm, struct expression *mod_expr);
 146 void add_modification_hook(int owner, modification_hook *call_back);
 147 void add_indirect_modification_hook(int owner, modification_hook *call_back);
 148
 149 const char *get_filename(void);
 150 const char *get_base_file(void);
 151 char *get_function(void);
 152 int get_lineno(void);
 153 extern int final_pass;
 154 extern struct symbol *cur_func_sym;
 155 extern int option_debug;
 156 extern int local_debug;
 157
 158 extern FILE *sm_outfd;
 159 #define sm_printf(msg...) do { if (final_pass || option_debug) fprintf(sm_outfd, msg); } while (0)
 160
 161 static inline void sm_prefix(void)
 162 {
 163         sm_printf("%s:%d %s() ", get_filename(), get_lineno(), get_function());
 164 }
 165
 166 static inline void print_implied_debug_msg();
 167
 168 #define sm_msg(msg...) \
 169 do {                                                           \
 170         print_implied_debug_msg();                             \
 171         if (!option_debug && !final_pass)                      \
 172                 break;                                         \
 173         sm_prefix();                                           \
 174         sm_printf(msg);                                        \
 175         sm_printf("\n");                                       \
 176 } while (0)
 177
 178 #define local_debug(msg...)                                     \
 179 do {                                                            \
 180         if (local_debug)                                        \
 181                 sm_msg(msg);                                    \
 182 } while (0)
 183
 184 extern char *implied_debug_msg;
 185 static inline void print_implied_debug_msg()
 186 {
 187         static struct symbol *last_printed = NULL;
 188
 189         if (!implied_debug_msg)
 190                 return;
 191         if (last_printed == cur_func_sym)
 192                 return;
 193         last_printed = cur_func_sym;
 194         sm_msg("%s", implied_debug_msg);
 195 }
 196
 197 #define sm_debug(msg...) do { if (option_debug) sm_printf(msg); } while (0)
 198
 199 #define sm_info(msg...) do {                                    \
 200         if (option_debug || (option_info && final_pass)) {      \
 201                 sm_prefix();                                    \
 202                 sm_printf("info: ");                            \
 203                 sm_printf(msg);                                 \
 204                 sm_printf("\n");                                \
 205         }                                                       \
 206 } while(0)
 207
 208 struct smatch_state *get_state(int owner, const char *name, struct symbol *sym);
 209 struct smatch_state *get_state_expr(int owner, struct expression *expr);
 210 struct state_list *get_possible_states(int owner, const char *name,
 211                                        struct symbol *sym);
 212 struct state_list *get_possible_states_expr(int owner, struct expression *expr);
 213 struct sm_state *set_state(int owner, const char *name, struct symbol *sym,
 214                struct smatch_state *state);
 215 struct sm_state *set_state_expr(int owner, struct expression *expr,
 216                 struct smatch_state *state);
 217 void delete_state(int owner, const char *name, struct symbol *sym);
 218 void delete_state_expr(int owner, struct expression *expr);
 219 void set_true_false_states(int owner, const char *name, struct symbol *sym,
 220                            struct smatch_state *true_state,
 221                            struct smatch_state *false_state);
 222 void set_true_false_states_expr(int owner, struct expression *expr,
 223                            struct smatch_state *true_state,
 224                            struct smatch_state *false_state);
 225
 226 struct state_list *get_all_states_slist(int owner, struct state_list *source);
 227 struct state_list *get_all_states(int id);
 228 int is_reachable(void);
 229
 230 /* smatch_helper.c */
 231 char *alloc_string(const char *str);
 232 void free_string(char *str);
 233 void remove_parens(char *str);
 234 struct smatch_state *alloc_state_num(int num);
 235 struct expression *get_argument_from_call_expr(struct expression_list *args,
 236                                                int num);
 237
 238 char *expr_to_var(struct expression *expr);
 239 char *expr_to_str(struct expression *expr);
 240 char *expr_to_str_sym(struct expression *expr,
 241                                      struct symbol **sym_ptr);
 242 char *expr_to_var_sym(struct expression *expr,
 243                              struct symbol **sym_ptr);
 244
 245 int sym_name_is(const char *name, struct expression *expr);
 246 int get_value(struct expression *expr, sval_t *val);
 247 int get_implied_value(struct expression *expr, sval_t *val);
 248 int get_implied_min(struct expression *expr, sval_t *sval);
 249 int get_implied_max(struct expression *expr, sval_t *val);
 250 int get_hard_max(struct expression *expr, sval_t *sval);
 251 int get_fuzzy_min(struct expression *expr, sval_t *min);
 252 int get_fuzzy_max(struct expression *expr, sval_t *max);
 253 int get_absolute_min(struct expression *expr, sval_t *sval);
 254 int get_absolute_max(struct expression *expr, sval_t *sval);
 255 int parse_call_math(struct expression *expr, char *math, sval_t *val);
 256 int is_zero(struct expression *expr);
 257 int known_condition_true(struct expression *expr);
 258 int known_condition_false(struct expression *expr);
 259 int implied_condition_true(struct expression *expr);
 260 int implied_condition_false(struct expression *expr);
 261
 262 int is_array(struct expression *expr);
 263 struct expression *get_array_name(struct expression *expr);
 264 struct expression *get_array_offset(struct expression *expr);
 265 const char *show_state(struct smatch_state *state);
 266 struct statement *get_expression_statement(struct expression *expr);
 267 struct expression *strip_parens(struct expression *expr);
 268 struct expression *strip_expr(struct expression *expr);
 269 void scoped_state(int my_id, const char *name, struct symbol *sym);
 270 int is_error_return(struct expression *expr);
 271 int getting_address(void);
 272 char *get_member_name(struct expression *expr);
 273 char *get_fnptr_name(struct expression *expr);
 274 int positions_eq(struct position pos1, struct position pos2);
 275 struct statement *get_current_statement(void);
 276 int get_param_num_from_sym(struct symbol *sym);
 277
 278 /* smatch_type.c */
 279 struct symbol *get_real_base_type(struct symbol *sym);
 280 int type_bits(struct symbol *type);
 281 int type_positive_bits(struct symbol *type);
 282 struct symbol *get_pointer_type(struct expression *expr);
 283 struct symbol *get_type(struct expression *expr);
 284 int type_unsigned(struct symbol *base_type);
 285 int type_signed(struct symbol *base_type);
 286 int expr_unsigned(struct expression *expr);
 287 int returns_unsigned(struct symbol *base_type);
 288 int is_pointer(struct expression *expr);
 289 int returns_pointer(struct symbol *base_type);
 290 sval_t sval_type_max(struct symbol *base_type);
 291 sval_t sval_type_min(struct symbol *base_type);
 292 int nr_bits(struct expression *expr);
 293 int is_void_pointer(struct expression *expr);
 294 int is_char_pointer(struct expression *expr);
 295 int is_static(struct expression *expr);
 296 int types_equiv(struct symbol *one, struct symbol *two);
 297 int fn_static(void);
 298 const char *global_static();
 299 struct symbol *cur_func_return_type(void);
 300 struct symbol *get_arg_type(struct expression *fn, int arg);
 301 struct symbol *get_member_type_from_key(struct expression *expr, char *key);
 302
 303 /* smatch_ignore.c */
 304 void add_ignore(int owner, const char *name, struct symbol *sym);
 305 int is_ignored(int owner, const char *name, struct symbol *sym);
 306
 307 /* smatch_tracker */
 308 struct tracker *alloc_tracker(int owner, const char *name, struct symbol *sym);
 309 void add_tracker(struct tracker_list **list, int owner, const char *name,
 310                 struct symbol *sym);
 311 void add_tracker_expr(struct tracker_list **list, int owner, struct expression *expr);
 312 void del_tracker(struct tracker_list **list, int owner, const char *name,
 313                 struct symbol *sym);
 314 int in_tracker_list(struct tracker_list *list, int owner, const char *name,
 315                 struct symbol *sym);
 316 void free_tracker_list(struct tracker_list **list);
 317 void free_trackers_and_list(struct tracker_list **list);
 318
 319 /* smatch_conditions */
 320 int in_condition(void);
 321
 322 /* smatch_flow.c */
 323
 324 void smatch (int argc, char **argv);
 325 int inside_loop(void);
 326 struct expression *get_switch_expr(void);
 327 int in_expression_statement(void);
 328 void __process_post_op_stack(void);
 329 void __split_expr(struct expression *expr);
 330 void __split_stmt(struct statement *stmt);
 331 extern int option_assume_loops;
 332 extern int option_known_conditions;
 333 extern int option_two_passes;
 334 extern int option_no_db;
 335 extern int option_file_output;
 336 extern struct expression_list *big_expression_stack;
 337 extern struct statement_list *big_statement_stack;
 338 int inlinable(struct expression *expr);
 339 extern int __inline_call;
 340 extern struct expression *__inline_fn;
 341 extern int __in_pre_condition;
 342 extern int __bail_on_rest_of_function;
 343
 344 /* smatch_conditions */
 345 void __split_whole_condition(struct expression *expr);
 346 void __handle_logic(struct expression *expr);
 347 int is_condition(struct expression *expr);
 348 int __handle_condition_assigns(struct expression *expr);
 349 int __handle_select_assigns(struct expression *expr);
 350 int __handle_expr_statement_assigns(struct expression *expr);
 351
 352 /* smatch_implied.c */
 353 extern int option_debug_implied;
 354 extern int option_debug_related;
 355 extern int option_no_implied;
 356 void get_implications(char *name, struct symbol *sym, int comparison, long long num,
 357                       struct state_list **true_states,
 358                       struct state_list **false_states);
 359 struct range_list_stack;
 360 struct state_list *__implied_case_slist(struct expression *switch_expr,
 361                                         struct expression *case_expr,
 362                                         struct range_list_stack **remaining_cases,
 363                                         struct state_list **raw_slist);
 364 struct range_list *__get_implied_values(struct expression *switch_expr);
 365 void overwrite_states_using_pool(struct sm_state *sm);
 366
 367 /* smatch_extras.c */
 368 #define SMATCH_EXTRA 1 /* this is my_id from smatch extra set in smatch.c */
 369
 370 struct data_range {
 371         sval_t min;
 372         sval_t max;
 373 };
 374
 375 static const long long valid_ptr_max = LONG_MAX;
 376 static const long long valid_ptr_min = 4096;
 377 static const sval_t valid_ptr_max_sval = {
 378         .type = &ptr_ctype,
 379         {.value = LONG_MAX},
 380 };
 381 static const sval_t valid_ptr_min_sval = {
 382         .type = &ptr_ctype,
 383         {.value = 4096},
 384 };
 385
 386 /* smatch_absolute.c */
 387 int get_absolute_min_helper(struct expression *expr, sval_t *sval);
 388 int get_absolute_max_helper(struct expression *expr, sval_t *sval);
 389
 390 /* smatch_local_values.c */
 391 int get_local_rl(struct expression *expr, struct range_list **rl);
 392 int get_local_max_helper(struct expression *expr, sval_t *sval);
 393 int get_local_min_helper(struct expression *expr, sval_t *sval);
 394
 395 /* smatch_states.c */
 396 void __push_fake_cur_slist();
 397 void __set_fake_cur_slist(struct state_list *slist);
 398 struct state_list *__pop_fake_cur_slist();
 399 void __free_fake_cur_slist();
 400 void __merge_slist_into_cur(struct state_list *slist);
 401
 402 int unreachable(void);
 403 void __set_sm(struct sm_state *sm);
 404 struct state_list *__get_cur_slist(void);
 405 void __set_true_false_sm(struct sm_state *true_state,
 406                         struct sm_state *false_state);
 407 void nullify_path(void);
 408 void __match_nullify_path_hook(const char *fn, struct expression *expr,
 409                                void *unused);
 410 void __unnullify_path(void);
 411 int __path_is_null(void);
 412 void save_all_states(void);
 413 void nullify_all_states(void);
 414 void restore_all_states(void);
 415 void clear_all_states(void);
 416
 417 struct sm_state *get_sm_state(int owner, const char *name,
 418                                 struct symbol *sym);
 419 struct sm_state *get_sm_state_expr(int owner, struct expression *expr);
 420 void __push_true_states(void);
 421 void __use_false_states(void);
 422 void __discard_false_states(void);
 423 void __merge_false_states(void);
 424 void __merge_true_states(void);
 425
 426 void __negate_cond_stacks(void);
 427 void __use_pre_cond_states(void);
 428 void __use_cond_true_states(void);
 429 void __use_cond_false_states(void);
 430 void __push_cond_stacks(void);
 431 struct state_list *__copy_cond_true_states(void);
 432 struct state_list *__copy_cond_false_states(void);
 433 struct state_list *__pop_cond_true_stack(void);
 434 struct state_list *__pop_cond_false_stack(void);
 435 void __and_cond_states(void);
 436 void __or_cond_states(void);
 437 void __save_pre_cond_states(void);
 438 void __discard_pre_cond_states(void);
 439 void __use_cond_states(void);
 440 extern struct state_list *__last_base_slist;
 441
 442 void __warn_on_silly_pre_loops(void);
 443
 444 void __push_continues(void);
 445 void __discard_continues(void);
 446 void __process_continues(void);
 447 void __merge_continues(void);
 448
 449 void __push_breaks(void);
 450 void __process_breaks(void);
 451 int __has_breaks(void);
 452 void __merge_breaks(void);
 453 void __use_breaks(void);
 454
 455 void __save_switch_states(struct expression *switch_expr);
 456 void __discard_switches(void);
 457 void __merge_switches(struct expression *switch_expr, struct expression *case_expr);
 458 void __push_default(void);
 459 void __set_default(void);
 460 int __pop_default(void);
 461
 462 void __push_conditions(void);
 463 void __discard_conditions(void);
 464
 465 void __save_gotos(const char *name);
 466 void __merge_gotos(const char *name);
 467
 468 void __print_cur_slist(void);
 469
 470 /* smatch_hooks.c */
 471 void __pass_to_client(void *data, enum hook_type type);
 472 void __pass_to_client_no_data(enum hook_type type);
 473 void __pass_case_to_client(struct expression *switch_expr,
 474                            struct expression *case_expr);
 475 int __has_merge_function(int client_id);
 476 struct smatch_state *__client_merge_function(int owner,
 477                                              struct smatch_state *s1,
 478                                              struct smatch_state *s2);
 479 struct smatch_state *__client_unmatched_state_function(struct sm_state *sm);
 480 void __push_scope_hooks(void);
 481 void __call_scope_hooks(void);
 482
 483 /* smatch_function_hooks.c */
 484 void create_function_hook_hash(void);
 485 void __match_initializer_call(struct symbol *sym);
 486
 487 /* smatch_db.c */
 488 enum info_type {
 489         INTERNAL        = 0,
 490         PARAM_VALUE     = 1,
 491         BUF_SIZE        = 2,
 492         USER_DATA       = 3,
 493         CAPPED_DATA     = 4,
 494         RETURN_VALUE    = 5,
 495         DEREFERENCE     = 6,
 496         RANGE_CAP       = 7,
 497         LOCK_HELD       = 8,
 498         LOCK_RELEASED   = 9,
 499         ABSOLUTE_LIMITS = 10,
 500         LIMITED_VALUE   = 11,
 501         ADDED_VALUE     = 12,
 502         FILTER_VALUE    = 13,
 503         PARAM_CLEARED   = 14,
 504 };
 505
 506 void add_definition_db_callback(void (*callback)(const char *name, struct symbol *sym, char *key, char *value), int type);
 507 void add_member_info_callback(int owner, void (*callback)(struct expression *call, int param, char *printed_name, struct smatch_state *state));
 508 void add_returned_state_callback(void (*fn)(int return_id, char *return_ranges, struct expression *returned_expr));
 509 void add_returned_member_callback(int owner, void (*callback)(int return_id, char *return_ranges, char *printed_name, struct smatch_state *state));
 510 void add_db_fn_call_callback(int type, void (*callback)(struct expression *arg, char *value));
 511 struct range_list *db_return_vals(struct expression *expr);
 512 char *get_variable_from_key(struct expression *arg, char *key, struct symbol **sym);
 513 const char *get_param_name(struct sm_state *sm);
 514
 515 #define run_sql(call_back, sql...)    \
 516 do {                                  \
 517         char sql_txt[1024];           \
 518         if (option_no_db)             \
 519                 break;                \
 520         snprintf(sql_txt, 1024, sql); \
 521         sm_debug("%s\n", sql_txt);    \
 522         sql_exec(call_back, sql_txt); \
 523 } while (0)
 524
 525 /* like run_sql() but for the in-memory database */
 526 #define mem_sql(call_back, sql...)                                              \
 527 do {                                                                            \
 528         char sql_txt[1024];                                                     \
 529                                                                                 \
 530         snprintf(sql_txt, sizeof(sql_txt), sql);                                \
 531         sm_debug("in-mem: %s\n", sql_txt);                                      \
 532         sql_mem_exec(call_back, sql_txt);                                       \
 533 } while (0)
 534
 535 void sql_insert_return_states(int return_id, const char *return_ranges,
 536                 int type, int param, const char *key, const char *value);
 537 void sql_insert_caller_info(struct expression *call, int type, int param,
 538                 const char *key, const char *value);
 539 void sql_insert_function_ptr(const char *fn, const char *struct_name);
 540 void sql_insert_return_values(const char *return_values);
 541 void sql_insert_call_implies(int type, int param, int value);
 542 void sql_insert_type_size(const char *member, int size);
 543 void sql_insert_local_values(const char *name, const char *value);
 544
 545 void sql_select_return_states(const char *cols, struct expression *call,
 546         int (*callback)(void*, int, char**, char**));
 547 void sql_select_caller_info(const char *cols, struct symbol *sym,
 548         int (*callback)(void*, int, char**, char**));
 549 void sql_select_call_implies(const char *cols, struct expression *call,
 550         int (*callback)(void*, int, char**, char**));
 551
 552 void sql_exec(int (*callback)(void*, int, char**, char**), const char *sql);
 553 void sql_mem_exec(int (*callback)(void*, int, char**, char**), const char *sql);
 554
 555 void open_smatch_db(void);
 556
 557 /* smatch_files.c */
 558 int open_data_file(const char *filename);
 559 struct token *get_tokens_file(const char *filename);
 560
 561 /* smatch.c */
 562 extern char *option_project_str;
 563 extern char *data_dir;
 564 extern int option_no_data;
 565 extern int option_spammy;
 566 extern int option_full_path;
 567 extern int option_param_mapper;
 568 extern int option_info;
 569 extern int option_call_tree;
 570 extern int num_checks;
 571
 572 enum project_type {
 573         PROJ_NONE,
 574         PROJ_KERNEL,
 575         PROJ_WINE,
 576 };
 577 extern enum project_type option_project;
 578 const char *check_name(unsigned short id);
 579
 580
 581 /* smatch_buf_size.c */
 582 int get_array_size(struct expression *expr);
 583 int get_array_size_bytes(struct expression *expr);
 584 int get_array_size_bytes_min(struct expression *expr);
 585 int get_real_array_size(struct expression *expr);
 586
 587 /* smatch_capped.c */
 588 int is_capped(struct expression *expr);
 589 int is_capped_var_sym(const char *name, struct symbol *sym);
 590
 591 /* check_user_data.c */
 592 int is_user_data(struct expression *expr);
 593 int is_capped_user_data(struct expression *expr);
 594
 595 /* check_locking.c */
 596 void print_held_locks();
 597
 598 /* check_assigned_expr.c */
 599 struct expression *get_assigned_expr(struct expression *expr);
 600
 601 /* smatch_comparison.c */
 602 int get_comparison(struct expression *left, struct expression *right);
 603 void __add_comparison_info(struct expression *expr, struct expression *call, const char *range);
 604 char *range_comparison_to_param(struct expression *expr);
 605
 606 /* smatch_sval.c */
 607 sval_t *sval_alloc(sval_t sval);
 608 sval_t *sval_alloc_permanent(sval_t sval);
 609 sval_t sval_blank(struct expression *expr);
 610 sval_t sval_type_val(struct symbol *type, long long val);
 611 sval_t sval_from_val(struct expression *expr, long long val);
 612 int sval_unsigned(sval_t sval);
 613 int sval_signed(sval_t sval);
 614 int sval_bits(sval_t sval);
 615 int sval_positive_bits(sval_t sval);
 616 int sval_bits_used(sval_t sval);
 617 int sval_is_negative(sval_t sval);
 618 int sval_is_positive(sval_t sval);
 619 int sval_is_min(sval_t sval);
 620 int sval_is_max(sval_t sval);
 621 int sval_is_a_min(sval_t sval);
 622 int sval_is_a_max(sval_t sval);
 623 int sval_is_negative_min(sval_t sval);
 624 int sval_cmp(sval_t one, sval_t two);
 625 int sval_cmp_t(struct symbol *type, sval_t one, sval_t two);
 626 int sval_cmp_val(sval_t one, long long val);
 627 sval_t sval_min(sval_t one, sval_t two);
 628 sval_t sval_max(sval_t one, sval_t two);
 629 int sval_too_low(struct symbol *type, sval_t sval);
 630 int sval_too_high(struct symbol *type, sval_t sval);
 631 int sval_fits(struct symbol *type, sval_t sval);
 632 sval_t sval_cast(struct symbol *type, sval_t sval);
 633 sval_t sval_preop(sval_t sval, int op);
 634 sval_t sval_binop(sval_t left, int op, sval_t right);
 635 int sval_binop_overflows(sval_t left, int op, sval_t right);
 636 const char *sval_to_str(sval_t sval);
 637 const char *sval_to_numstr(sval_t sval);
 638 sval_t ll_to_sval(long long val);
 639
 640 /* smatch_string_list.c */
 641 int list_has_string(struct string_list *str_list, char *str);
 642 void insert_string(struct string_list **str_list, char *str);
 643 struct string_list *clone_str_list(struct string_list *orig);
 644 struct string_list *combine_string_lists(struct string_list *one, struct string_list *two);
 645
 646 /* smatch_clear_buffer.c */
 647 int is_uninitialized(struct expression *expr);
 648 int has_uninitialized_members(struct expression *expr);
 649
 650 /* smatch_start_states.c */
 651 struct state_list *get_start_states(void);
 652
 653 /* smatch_recurse.c */
 654 int has_symbol(struct expression *expr, struct symbol *sym);
 655 int has_variable(struct expression *expr, struct expression *var);
 656
 657 #endif      /* !SMATCH_H_ */