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