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