1*1f5207b7SJohn Levon /* 2*1f5207b7SJohn Levon * Copyright (C) 2006 Dan Carpenter. 3*1f5207b7SJohn Levon * 4*1f5207b7SJohn Levon * This program is free software; you can redistribute it and/or 5*1f5207b7SJohn Levon * modify it under the terms of the GNU General Public License 6*1f5207b7SJohn Levon * as published by the Free Software Foundation; either version 2 7*1f5207b7SJohn Levon * of the License, or (at your option) any later version. 8*1f5207b7SJohn Levon * 9*1f5207b7SJohn Levon * This program is distributed in the hope that it will be useful, 10*1f5207b7SJohn Levon * but WITHOUT ANY WARRANTY; without even the implied warranty of 11*1f5207b7SJohn Levon * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12*1f5207b7SJohn Levon * GNU General Public License for more details. 13*1f5207b7SJohn Levon * 14*1f5207b7SJohn Levon * You should have received a copy of the GNU General Public License 15*1f5207b7SJohn Levon * along with this program; if not, see http://www.gnu.org/copyleft/gpl.txt 16*1f5207b7SJohn Levon */ 17*1f5207b7SJohn Levon 18*1f5207b7SJohn Levon #ifndef SMATCH_H_ 19*1f5207b7SJohn Levon # define SMATCH_H_ 20*1f5207b7SJohn Levon 21*1f5207b7SJohn Levon #include <stdio.h> 22*1f5207b7SJohn Levon #include <string.h> 23*1f5207b7SJohn Levon #include <limits.h> 24*1f5207b7SJohn Levon #include <sys/time.h> 25*1f5207b7SJohn Levon #include <sqlite3.h> 26*1f5207b7SJohn Levon #include "lib.h" 27*1f5207b7SJohn Levon #include "allocate.h" 28*1f5207b7SJohn Levon #include "scope.h" 29*1f5207b7SJohn Levon #include "parse.h" 30*1f5207b7SJohn Levon #include "expression.h" 31*1f5207b7SJohn Levon #include "avl.h" 32*1f5207b7SJohn Levon 33*1f5207b7SJohn Levon typedef struct { 34*1f5207b7SJohn Levon struct symbol *type; 35*1f5207b7SJohn Levon union { 36*1f5207b7SJohn Levon long long value; 37*1f5207b7SJohn Levon unsigned long long uvalue; 38*1f5207b7SJohn Levon }; 39*1f5207b7SJohn Levon } sval_t; 40*1f5207b7SJohn Levon 41*1f5207b7SJohn Levon typedef long long mtag_t; 42*1f5207b7SJohn Levon 43*1f5207b7SJohn Levon struct smatch_state { 44*1f5207b7SJohn Levon const char *name; 45*1f5207b7SJohn Levon void *data; 46*1f5207b7SJohn Levon }; 47*1f5207b7SJohn Levon #define STATE(_x) static struct smatch_state _x = { .name = #_x } 48*1f5207b7SJohn Levon extern struct smatch_state undefined; 49*1f5207b7SJohn Levon extern struct smatch_state ghost; 50*1f5207b7SJohn Levon extern struct smatch_state merged; 51*1f5207b7SJohn Levon extern struct smatch_state true_state; 52*1f5207b7SJohn Levon extern struct smatch_state false_state; 53*1f5207b7SJohn Levon DECLARE_ALLOCATOR(smatch_state); 54*1f5207b7SJohn Levon 55*1f5207b7SJohn Levon static inline void *INT_PTR(int i) 56*1f5207b7SJohn Levon { 57*1f5207b7SJohn Levon return (void *)(long)i; 58*1f5207b7SJohn Levon } 59*1f5207b7SJohn Levon 60*1f5207b7SJohn Levon static inline int PTR_INT(void *p) 61*1f5207b7SJohn Levon { 62*1f5207b7SJohn Levon return (int)(long)p; 63*1f5207b7SJohn Levon } 64*1f5207b7SJohn Levon 65*1f5207b7SJohn Levon struct tracker { 66*1f5207b7SJohn Levon char *name; 67*1f5207b7SJohn Levon struct symbol *sym; 68*1f5207b7SJohn Levon unsigned short owner; 69*1f5207b7SJohn Levon }; 70*1f5207b7SJohn Levon DECLARE_ALLOCATOR(tracker); 71*1f5207b7SJohn Levon DECLARE_PTR_LIST(tracker_list, struct tracker); 72*1f5207b7SJohn Levon DECLARE_PTR_LIST(stree_stack, struct stree); 73*1f5207b7SJohn Levon 74*1f5207b7SJohn Levon /* The first 3 struct members must match struct tracker */ 75*1f5207b7SJohn Levon struct sm_state { 76*1f5207b7SJohn Levon const char *name; 77*1f5207b7SJohn Levon struct symbol *sym; 78*1f5207b7SJohn Levon unsigned short owner; 79*1f5207b7SJohn Levon unsigned short merged:1; 80*1f5207b7SJohn Levon unsigned short skip_implications:1; 81*1f5207b7SJohn Levon unsigned int nr_children; 82*1f5207b7SJohn Levon unsigned int line; 83*1f5207b7SJohn Levon struct smatch_state *state; 84*1f5207b7SJohn Levon struct stree *pool; 85*1f5207b7SJohn Levon struct sm_state *left; 86*1f5207b7SJohn Levon struct sm_state *right; 87*1f5207b7SJohn Levon struct state_list *possible; 88*1f5207b7SJohn Levon }; 89*1f5207b7SJohn Levon 90*1f5207b7SJohn Levon struct var_sym { 91*1f5207b7SJohn Levon char *var; 92*1f5207b7SJohn Levon struct symbol *sym; 93*1f5207b7SJohn Levon }; 94*1f5207b7SJohn Levon DECLARE_ALLOCATOR(var_sym); 95*1f5207b7SJohn Levon DECLARE_PTR_LIST(var_sym_list, struct var_sym); 96*1f5207b7SJohn Levon 97*1f5207b7SJohn Levon struct constraint { 98*1f5207b7SJohn Levon int op; 99*1f5207b7SJohn Levon int id; 100*1f5207b7SJohn Levon }; 101*1f5207b7SJohn Levon DECLARE_PTR_LIST(constraint_list, struct constraint); 102*1f5207b7SJohn Levon 103*1f5207b7SJohn Levon enum hook_type { 104*1f5207b7SJohn Levon EXPR_HOOK, 105*1f5207b7SJohn Levon STMT_HOOK, 106*1f5207b7SJohn Levon STMT_HOOK_AFTER, 107*1f5207b7SJohn Levon SYM_HOOK, 108*1f5207b7SJohn Levon STRING_HOOK, 109*1f5207b7SJohn Levon DECLARATION_HOOK, 110*1f5207b7SJohn Levon ASSIGNMENT_HOOK, 111*1f5207b7SJohn Levon ASSIGNMENT_HOOK_AFTER, 112*1f5207b7SJohn Levon RAW_ASSIGNMENT_HOOK, 113*1f5207b7SJohn Levon GLOBAL_ASSIGNMENT_HOOK, 114*1f5207b7SJohn Levon LOGIC_HOOK, 115*1f5207b7SJohn Levon CONDITION_HOOK, 116*1f5207b7SJohn Levon PRELOOP_HOOK, 117*1f5207b7SJohn Levon SELECT_HOOK, 118*1f5207b7SJohn Levon WHOLE_CONDITION_HOOK, 119*1f5207b7SJohn Levon FUNCTION_CALL_HOOK_BEFORE, 120*1f5207b7SJohn Levon FUNCTION_CALL_HOOK, 121*1f5207b7SJohn Levon CALL_HOOK_AFTER_INLINE, 122*1f5207b7SJohn Levon FUNCTION_CALL_HOOK_AFTER_DB, 123*1f5207b7SJohn Levon CALL_ASSIGNMENT_HOOK, 124*1f5207b7SJohn Levon MACRO_ASSIGNMENT_HOOK, 125*1f5207b7SJohn Levon BINOP_HOOK, 126*1f5207b7SJohn Levon OP_HOOK, 127*1f5207b7SJohn Levon DEREF_HOOK, 128*1f5207b7SJohn Levon CASE_HOOK, 129*1f5207b7SJohn Levon ASM_HOOK, 130*1f5207b7SJohn Levon CAST_HOOK, 131*1f5207b7SJohn Levon SIZEOF_HOOK, 132*1f5207b7SJohn Levon BASE_HOOK, 133*1f5207b7SJohn Levon FUNC_DEF_HOOK, 134*1f5207b7SJohn Levon AFTER_DEF_HOOK, 135*1f5207b7SJohn Levon END_FUNC_HOOK, 136*1f5207b7SJohn Levon AFTER_FUNC_HOOK, 137*1f5207b7SJohn Levon RETURN_HOOK, 138*1f5207b7SJohn Levon INLINE_FN_START, 139*1f5207b7SJohn Levon INLINE_FN_END, 140*1f5207b7SJohn Levon END_FILE_HOOK, 141*1f5207b7SJohn Levon NUM_HOOKS, 142*1f5207b7SJohn Levon }; 143*1f5207b7SJohn Levon 144*1f5207b7SJohn Levon #define TRUE 1 145*1f5207b7SJohn Levon #define FALSE 0 146*1f5207b7SJohn Levon 147*1f5207b7SJohn Levon struct range_list; 148*1f5207b7SJohn Levon 149*1f5207b7SJohn Levon void add_hook(void *func, enum hook_type type); 150*1f5207b7SJohn Levon typedef struct smatch_state *(merge_func_t)(struct smatch_state *s1, struct smatch_state *s2); 151*1f5207b7SJohn Levon typedef struct smatch_state *(unmatched_func_t)(struct sm_state *state); 152*1f5207b7SJohn Levon void add_merge_hook(int client_id, merge_func_t *func); 153*1f5207b7SJohn Levon void add_unmatched_state_hook(int client_id, unmatched_func_t *func); 154*1f5207b7SJohn Levon void add_pre_merge_hook(int client_id, void (*hook)(struct sm_state *sm)); 155*1f5207b7SJohn Levon typedef void (scope_hook)(void *data); 156*1f5207b7SJohn Levon void add_scope_hook(scope_hook *hook, void *data); 157*1f5207b7SJohn Levon typedef void (func_hook)(const char *fn, struct expression *expr, void *data); 158*1f5207b7SJohn Levon typedef void (implication_hook)(const char *fn, struct expression *call_expr, 159*1f5207b7SJohn Levon struct expression *assign_expr, void *data); 160*1f5207b7SJohn Levon typedef void (return_implies_hook)(struct expression *call_expr, 161*1f5207b7SJohn Levon int param, char *key, char *value); 162*1f5207b7SJohn Levon typedef int (implied_return_hook)(struct expression *call_expr, void *info, struct range_list **rl); 163*1f5207b7SJohn Levon void add_function_hook(const char *look_for, func_hook *call_back, void *data); 164*1f5207b7SJohn Levon 165*1f5207b7SJohn Levon void add_function_assign_hook(const char *look_for, func_hook *call_back, 166*1f5207b7SJohn Levon void *info); 167*1f5207b7SJohn Levon void add_implied_return_hook(const char *look_for, 168*1f5207b7SJohn Levon implied_return_hook *call_back, 169*1f5207b7SJohn Levon void *info); 170*1f5207b7SJohn Levon void add_macro_assign_hook(const char *look_for, func_hook *call_back, 171*1f5207b7SJohn Levon void *info); 172*1f5207b7SJohn Levon void add_macro_assign_hook_extra(const char *look_for, func_hook *call_back, 173*1f5207b7SJohn Levon void *info); 174*1f5207b7SJohn Levon void return_implies_state(const char *look_for, long long start, long long end, 175*1f5207b7SJohn Levon implication_hook *call_back, void *info); 176*1f5207b7SJohn Levon void select_return_states_hook(int type, return_implies_hook *callback); 177*1f5207b7SJohn Levon void select_return_states_before(void (*fn)(void)); 178*1f5207b7SJohn Levon void select_return_states_after(void (*fn)(void)); 179*1f5207b7SJohn Levon int get_implied_return(struct expression *expr, struct range_list **rl); 180*1f5207b7SJohn Levon void allocate_hook_memory(void); 181*1f5207b7SJohn Levon 182*1f5207b7SJohn Levon struct modification_data { 183*1f5207b7SJohn Levon struct smatch_state *prev; 184*1f5207b7SJohn Levon struct expression *cur; 185*1f5207b7SJohn Levon }; 186*1f5207b7SJohn Levon 187*1f5207b7SJohn Levon typedef void (modification_hook)(struct sm_state *sm, struct expression *mod_expr); 188*1f5207b7SJohn Levon void add_modification_hook(int owner, modification_hook *call_back); 189*1f5207b7SJohn Levon void add_modification_hook_late(int owner, modification_hook *call_back); 190*1f5207b7SJohn Levon struct smatch_state *get_modification_state(struct expression *expr); 191*1f5207b7SJohn Levon 192*1f5207b7SJohn Levon int outside_of_function(void); 193*1f5207b7SJohn Levon const char *get_filename(void); 194*1f5207b7SJohn Levon const char *get_base_file(void); 195*1f5207b7SJohn Levon char *get_function(void); 196*1f5207b7SJohn Levon int get_lineno(void); 197*1f5207b7SJohn Levon extern int final_pass; 198*1f5207b7SJohn Levon extern struct symbol *cur_func_sym; 199*1f5207b7SJohn Levon extern int option_debug; 200*1f5207b7SJohn Levon extern int local_debug; 201*1f5207b7SJohn Levon extern int option_info; 202*1f5207b7SJohn Levon extern int option_spammy; 203*1f5207b7SJohn Levon extern char *trace_variable; 204*1f5207b7SJohn Levon extern struct stree *global_states; 205*1f5207b7SJohn Levon int is_skipped_function(void); 206*1f5207b7SJohn Levon int is_silenced_function(void); 207*1f5207b7SJohn Levon 208*1f5207b7SJohn Levon /* smatch_impossible.c */ 209*1f5207b7SJohn Levon int is_impossible_path(void); 210*1f5207b7SJohn Levon void set_path_impossible(void); 211*1f5207b7SJohn Levon 212*1f5207b7SJohn Levon extern FILE *sm_outfd; 213*1f5207b7SJohn Levon extern FILE *sql_outfd; 214*1f5207b7SJohn Levon extern FILE *caller_info_fd; 215*1f5207b7SJohn Levon extern int sm_nr_checks; 216*1f5207b7SJohn Levon extern int sm_nr_errors; 217*1f5207b7SJohn Levon extern const char *progname; 218*1f5207b7SJohn Levon 219*1f5207b7SJohn Levon /* 220*1f5207b7SJohn Levon * How to use these routines: 221*1f5207b7SJohn Levon * 222*1f5207b7SJohn Levon * sm_fatal(): an internal error of some kind that should immediately exit 223*1f5207b7SJohn Levon * sm_ierror(): an internal error 224*1f5207b7SJohn Levon * sm_perror(): an internal error from parsing input source 225*1f5207b7SJohn Levon * sm_error(): an error from input source 226*1f5207b7SJohn Levon * sm_warning(): a warning from input source 227*1f5207b7SJohn Levon * sm_info(): info message (from option_info) 228*1f5207b7SJohn Levon * sm_debug(): debug message 229*1f5207b7SJohn Levon * sm_msg(): other message (please avoid using this) 230*1f5207b7SJohn Levon */ 231*1f5207b7SJohn Levon 232*1f5207b7SJohn Levon #define sm_printf(msg...) do { if (final_pass || option_debug || local_debug) fprintf(sm_outfd, msg); } while (0) 233*1f5207b7SJohn Levon 234*1f5207b7SJohn Levon static inline void sm_prefix(void) 235*1f5207b7SJohn Levon { 236*1f5207b7SJohn Levon sm_printf("%s: %s:%d %s() ", progname, get_filename(), get_lineno(), get_function()); 237*1f5207b7SJohn Levon } 238*1f5207b7SJohn Levon 239*1f5207b7SJohn Levon static inline void print_implied_debug_msg(); 240*1f5207b7SJohn Levon 241*1f5207b7SJohn Levon extern bool __silence_warnings_for_stmt; 242*1f5207b7SJohn Levon 243*1f5207b7SJohn Levon #define sm_print_msg(type, msg...) \ 244*1f5207b7SJohn Levon do { \ 245*1f5207b7SJohn Levon print_implied_debug_msg(); \ 246*1f5207b7SJohn Levon if (!final_pass && !option_debug && !local_debug) \ 247*1f5207b7SJohn Levon break; \ 248*1f5207b7SJohn Levon if (__silence_warnings_for_stmt && !option_debug && !local_debug) \ 249*1f5207b7SJohn Levon break; \ 250*1f5207b7SJohn Levon if (!option_info && is_silenced_function()) \ 251*1f5207b7SJohn Levon break; \ 252*1f5207b7SJohn Levon sm_prefix(); \ 253*1f5207b7SJohn Levon if (type == 1) { \ 254*1f5207b7SJohn Levon sm_printf("warn: "); \ 255*1f5207b7SJohn Levon sm_nr_checks++; \ 256*1f5207b7SJohn Levon } else if (type == 2) { \ 257*1f5207b7SJohn Levon sm_printf("error: "); \ 258*1f5207b7SJohn Levon sm_nr_checks++; \ 259*1f5207b7SJohn Levon } else if (type == 3) { \ 260*1f5207b7SJohn Levon sm_printf("parse error: "); \ 261*1f5207b7SJohn Levon sm_nr_errors++; \ 262*1f5207b7SJohn Levon } \ 263*1f5207b7SJohn Levon sm_printf(msg); \ 264*1f5207b7SJohn Levon sm_printf("\n"); \ 265*1f5207b7SJohn Levon } while (0) 266*1f5207b7SJohn Levon 267*1f5207b7SJohn Levon #define sm_msg(msg...) do { sm_print_msg(0, msg); } while (0) 268*1f5207b7SJohn Levon 269*1f5207b7SJohn Levon #define local_debug(msg...) \ 270*1f5207b7SJohn Levon do { \ 271*1f5207b7SJohn Levon if (local_debug) \ 272*1f5207b7SJohn Levon sm_msg(msg); \ 273*1f5207b7SJohn Levon } while (0) 274*1f5207b7SJohn Levon 275*1f5207b7SJohn Levon extern char *implied_debug_msg; 276*1f5207b7SJohn Levon static inline void print_implied_debug_msg(void) 277*1f5207b7SJohn Levon { 278*1f5207b7SJohn Levon static struct symbol *last_printed = NULL; 279*1f5207b7SJohn Levon 280*1f5207b7SJohn Levon if (!implied_debug_msg) 281*1f5207b7SJohn Levon return; 282*1f5207b7SJohn Levon if (last_printed == cur_func_sym) 283*1f5207b7SJohn Levon return; 284*1f5207b7SJohn Levon last_printed = cur_func_sym; 285*1f5207b7SJohn Levon sm_msg("%s", implied_debug_msg); 286*1f5207b7SJohn Levon } 287*1f5207b7SJohn Levon 288*1f5207b7SJohn Levon #define sm_debug(msg...) do { if (option_debug) sm_printf(msg); } while (0) 289*1f5207b7SJohn Levon 290*1f5207b7SJohn Levon #define sm_info(msg...) do { \ 291*1f5207b7SJohn Levon if (option_debug || (option_info && final_pass)) { \ 292*1f5207b7SJohn Levon sm_prefix(); \ 293*1f5207b7SJohn Levon sm_printf("info: "); \ 294*1f5207b7SJohn Levon sm_printf(msg); \ 295*1f5207b7SJohn Levon sm_printf("\n"); \ 296*1f5207b7SJohn Levon } \ 297*1f5207b7SJohn Levon } while(0) 298*1f5207b7SJohn Levon 299*1f5207b7SJohn Levon #define sm_warning(msg...) do { sm_print_msg(1, msg); } while (0) 300*1f5207b7SJohn Levon #define sm_error(msg...) do { sm_print_msg(2, msg); } while (0) 301*1f5207b7SJohn Levon #define sm_perror(msg...) do { sm_print_msg(3, msg); } while (0) 302*1f5207b7SJohn Levon 303*1f5207b7SJohn Levon static inline void sm_fatal(const char *fmt, ...) 304*1f5207b7SJohn Levon { 305*1f5207b7SJohn Levon va_list args; 306*1f5207b7SJohn Levon 307*1f5207b7SJohn Levon va_start(args, fmt); 308*1f5207b7SJohn Levon vfprintf(sm_outfd, fmt, args); 309*1f5207b7SJohn Levon va_end(args); 310*1f5207b7SJohn Levon 311*1f5207b7SJohn Levon fprintf(sm_outfd, "\n"); 312*1f5207b7SJohn Levon 313*1f5207b7SJohn Levon exit(1); 314*1f5207b7SJohn Levon } 315*1f5207b7SJohn Levon 316*1f5207b7SJohn Levon static inline void sm_ierror(const char *fmt, ...) 317*1f5207b7SJohn Levon { 318*1f5207b7SJohn Levon va_list args; 319*1f5207b7SJohn Levon 320*1f5207b7SJohn Levon sm_nr_errors++; 321*1f5207b7SJohn Levon 322*1f5207b7SJohn Levon fprintf(sm_outfd, "internal error: "); 323*1f5207b7SJohn Levon 324*1f5207b7SJohn Levon va_start(args, fmt); 325*1f5207b7SJohn Levon vfprintf(sm_outfd, fmt, args); 326*1f5207b7SJohn Levon va_end(args); 327*1f5207b7SJohn Levon 328*1f5207b7SJohn Levon fprintf(sm_outfd, "\n"); 329*1f5207b7SJohn Levon } 330*1f5207b7SJohn Levon #define ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1)) 331*1f5207b7SJohn Levon 332*1f5207b7SJohn Levon struct smatch_state *__get_state(int owner, const char *name, struct symbol *sym); 333*1f5207b7SJohn Levon struct smatch_state *get_state(int owner, const char *name, struct symbol *sym); 334*1f5207b7SJohn Levon struct smatch_state *get_state_expr(int owner, struct expression *expr); 335*1f5207b7SJohn Levon struct state_list *get_possible_states(int owner, const char *name, 336*1f5207b7SJohn Levon struct symbol *sym); 337*1f5207b7SJohn Levon struct state_list *get_possible_states_expr(int owner, struct expression *expr); 338*1f5207b7SJohn Levon struct sm_state *set_state(int owner, const char *name, struct symbol *sym, 339*1f5207b7SJohn Levon struct smatch_state *state); 340*1f5207b7SJohn Levon struct sm_state *set_state_expr(int owner, struct expression *expr, 341*1f5207b7SJohn Levon struct smatch_state *state); 342*1f5207b7SJohn Levon void delete_state(int owner, const char *name, struct symbol *sym); 343*1f5207b7SJohn Levon void delete_state_expr(int owner, struct expression *expr); 344*1f5207b7SJohn Levon void __delete_all_states_sym(struct symbol *sym); 345*1f5207b7SJohn Levon void set_true_false_states(int owner, const char *name, struct symbol *sym, 346*1f5207b7SJohn Levon struct smatch_state *true_state, 347*1f5207b7SJohn Levon struct smatch_state *false_state); 348*1f5207b7SJohn Levon void set_true_false_states_expr(int owner, struct expression *expr, 349*1f5207b7SJohn Levon struct smatch_state *true_state, 350*1f5207b7SJohn Levon struct smatch_state *false_state); 351*1f5207b7SJohn Levon 352*1f5207b7SJohn Levon struct stree *get_all_states_from_stree(int owner, struct stree *source); 353*1f5207b7SJohn Levon struct stree *get_all_states_stree(int id); 354*1f5207b7SJohn Levon struct stree *__get_cur_stree(void); 355*1f5207b7SJohn Levon int is_reachable(void); 356*1f5207b7SJohn Levon void add_get_state_hook(void (*fn)(int owner, const char *name, struct symbol *sym)); 357*1f5207b7SJohn Levon 358*1f5207b7SJohn Levon /* smatch_helper.c */ 359*1f5207b7SJohn Levon DECLARE_PTR_LIST(int_stack, int); 360*1f5207b7SJohn Levon char *alloc_string(const char *str); 361*1f5207b7SJohn Levon void free_string(char *str); 362*1f5207b7SJohn Levon void append(char *dest, const char *data, int buff_len); 363*1f5207b7SJohn Levon void remove_parens(char *str); 364*1f5207b7SJohn Levon struct smatch_state *alloc_state_num(int num); 365*1f5207b7SJohn Levon struct smatch_state *alloc_state_str(const char *name); 366*1f5207b7SJohn Levon struct smatch_state *alloc_state_expr(struct expression *expr); 367*1f5207b7SJohn Levon struct expression *get_argument_from_call_expr(struct expression_list *args, 368*1f5207b7SJohn Levon int num); 369*1f5207b7SJohn Levon 370*1f5207b7SJohn Levon char *expr_to_var(struct expression *expr); 371*1f5207b7SJohn Levon struct symbol *expr_to_sym(struct expression *expr); 372*1f5207b7SJohn Levon char *expr_to_str(struct expression *expr); 373*1f5207b7SJohn Levon char *expr_to_str_sym(struct expression *expr, 374*1f5207b7SJohn Levon struct symbol **sym_ptr); 375*1f5207b7SJohn Levon char *expr_to_var_sym(struct expression *expr, 376*1f5207b7SJohn Levon struct symbol **sym_ptr); 377*1f5207b7SJohn Levon char *expr_to_known_chunk_sym(struct expression *expr, struct symbol **sym); 378*1f5207b7SJohn Levon char *expr_to_chunk_sym_vsl(struct expression *expr, struct symbol **sym, struct var_sym_list **vsl); 379*1f5207b7SJohn Levon int get_complication_score(struct expression *expr); 380*1f5207b7SJohn Levon 381*1f5207b7SJohn Levon int sym_name_is(const char *name, struct expression *expr); 382*1f5207b7SJohn Levon int get_const_value(struct expression *expr, sval_t *sval); 383*1f5207b7SJohn Levon int get_value(struct expression *expr, sval_t *val); 384*1f5207b7SJohn Levon int get_implied_value(struct expression *expr, sval_t *val); 385*1f5207b7SJohn Levon int get_implied_min(struct expression *expr, sval_t *sval); 386*1f5207b7SJohn Levon int get_implied_max(struct expression *expr, sval_t *val); 387*1f5207b7SJohn Levon int get_hard_max(struct expression *expr, sval_t *sval); 388*1f5207b7SJohn Levon int get_fuzzy_min(struct expression *expr, sval_t *min); 389*1f5207b7SJohn Levon int get_fuzzy_max(struct expression *expr, sval_t *max); 390*1f5207b7SJohn Levon int get_absolute_min(struct expression *expr, sval_t *sval); 391*1f5207b7SJohn Levon int get_absolute_max(struct expression *expr, sval_t *sval); 392*1f5207b7SJohn Levon int parse_call_math(struct expression *expr, char *math, sval_t *val); 393*1f5207b7SJohn Levon int parse_call_math_rl(struct expression *call, char *math, struct range_list **rl); 394*1f5207b7SJohn Levon char *get_value_in_terms_of_parameter_math(struct expression *expr); 395*1f5207b7SJohn Levon char *get_value_in_terms_of_parameter_math_var_sym(const char *var, struct symbol *sym); 396*1f5207b7SJohn Levon int is_zero(struct expression *expr); 397*1f5207b7SJohn Levon int known_condition_true(struct expression *expr); 398*1f5207b7SJohn Levon int known_condition_false(struct expression *expr); 399*1f5207b7SJohn Levon int implied_condition_true(struct expression *expr); 400*1f5207b7SJohn Levon int implied_condition_false(struct expression *expr); 401*1f5207b7SJohn Levon int can_integer_overflow(struct symbol *type, struct expression *expr); 402*1f5207b7SJohn Levon void clear_math_cache(void); 403*1f5207b7SJohn Levon 404*1f5207b7SJohn Levon int is_array(struct expression *expr); 405*1f5207b7SJohn Levon struct expression *get_array_base(struct expression *expr); 406*1f5207b7SJohn Levon struct expression *get_array_offset(struct expression *expr); 407*1f5207b7SJohn Levon const char *show_state(struct smatch_state *state); 408*1f5207b7SJohn Levon struct statement *get_expression_statement(struct expression *expr); 409*1f5207b7SJohn Levon struct expression *strip_parens(struct expression *expr); 410*1f5207b7SJohn Levon struct expression *strip_expr(struct expression *expr); 411*1f5207b7SJohn Levon struct expression *strip_expr_set_parent(struct expression *expr); 412*1f5207b7SJohn Levon void scoped_state(int my_id, const char *name, struct symbol *sym); 413*1f5207b7SJohn Levon int is_error_return(struct expression *expr); 414*1f5207b7SJohn Levon int getting_address(void); 415*1f5207b7SJohn Levon int get_struct_and_member(struct expression *expr, const char **type, const char **member); 416*1f5207b7SJohn Levon char *get_member_name(struct expression *expr); 417*1f5207b7SJohn Levon char *get_fnptr_name(struct expression *expr); 418*1f5207b7SJohn Levon int cmp_pos(struct position pos1, struct position pos2); 419*1f5207b7SJohn Levon int positions_eq(struct position pos1, struct position pos2); 420*1f5207b7SJohn Levon struct statement *get_current_statement(void); 421*1f5207b7SJohn Levon struct statement *get_prev_statement(void); 422*1f5207b7SJohn Levon struct expression *get_last_expr_from_expression_stmt(struct expression *expr); 423*1f5207b7SJohn Levon int get_param_num_from_sym(struct symbol *sym); 424*1f5207b7SJohn Levon int get_param_num(struct expression *expr); 425*1f5207b7SJohn Levon int ms_since(struct timeval *start); 426*1f5207b7SJohn Levon int parent_is_gone_var_sym(const char *name, struct symbol *sym); 427*1f5207b7SJohn Levon int parent_is_gone(struct expression *expr); 428*1f5207b7SJohn Levon int invert_op(int op); 429*1f5207b7SJohn Levon int expr_equiv(struct expression *one, struct expression *two); 430*1f5207b7SJohn Levon void push_int(struct int_stack **stack, int num); 431*1f5207b7SJohn Levon int pop_int(struct int_stack **stack); 432*1f5207b7SJohn Levon 433*1f5207b7SJohn Levon /* smatch_type.c */ 434*1f5207b7SJohn Levon struct symbol *get_real_base_type(struct symbol *sym); 435*1f5207b7SJohn Levon int type_bytes(struct symbol *type); 436*1f5207b7SJohn Levon int array_bytes(struct symbol *type); 437*1f5207b7SJohn Levon struct symbol *get_pointer_type(struct expression *expr); 438*1f5207b7SJohn Levon struct symbol *get_type(struct expression *expr); 439*1f5207b7SJohn Levon struct symbol *get_final_type(struct expression *expr); 440*1f5207b7SJohn Levon struct symbol *get_promoted_type(struct symbol *left, struct symbol *right); 441*1f5207b7SJohn Levon int type_signed(struct symbol *base_type); 442*1f5207b7SJohn Levon int expr_unsigned(struct expression *expr); 443*1f5207b7SJohn Levon int expr_signed(struct expression *expr); 444*1f5207b7SJohn Levon int returns_unsigned(struct symbol *base_type); 445*1f5207b7SJohn Levon int is_pointer(struct expression *expr); 446*1f5207b7SJohn Levon int returns_pointer(struct symbol *base_type); 447*1f5207b7SJohn Levon sval_t sval_type_max(struct symbol *base_type); 448*1f5207b7SJohn Levon sval_t sval_type_min(struct symbol *base_type); 449*1f5207b7SJohn Levon int nr_bits(struct expression *expr); 450*1f5207b7SJohn Levon int is_void_pointer(struct expression *expr); 451*1f5207b7SJohn Levon int is_char_pointer(struct expression *expr); 452*1f5207b7SJohn Levon int is_string(struct expression *expr); 453*1f5207b7SJohn Levon int is_static(struct expression *expr); 454*1f5207b7SJohn Levon int is_local_variable(struct expression *expr); 455*1f5207b7SJohn Levon int types_equiv(struct symbol *one, struct symbol *two); 456*1f5207b7SJohn Levon int fn_static(void); 457*1f5207b7SJohn Levon const char *global_static(); 458*1f5207b7SJohn Levon struct symbol *cur_func_return_type(void); 459*1f5207b7SJohn Levon struct symbol *get_arg_type(struct expression *fn, int arg); 460*1f5207b7SJohn Levon struct symbol *get_member_type_from_key(struct expression *expr, const char *key); 461*1f5207b7SJohn Levon struct symbol *get_arg_type_from_key(struct expression *fn, int param, struct expression *arg, const char *key); 462*1f5207b7SJohn Levon int is_struct(struct expression *expr); 463*1f5207b7SJohn Levon char *type_to_str(struct symbol *type); 464*1f5207b7SJohn Levon 465*1f5207b7SJohn Levon /* smatch_ignore.c */ 466*1f5207b7SJohn Levon void add_ignore(int owner, const char *name, struct symbol *sym); 467*1f5207b7SJohn Levon int is_ignored(int owner, const char *name, struct symbol *sym); 468*1f5207b7SJohn Levon void add_ignore_expr(int owner, struct expression *expr); 469*1f5207b7SJohn Levon int is_ignored_expr(int owner, struct expression *expr); 470*1f5207b7SJohn Levon 471*1f5207b7SJohn Levon /* smatch_var_sym */ 472*1f5207b7SJohn Levon struct var_sym *alloc_var_sym(const char *var, struct symbol *sym); 473*1f5207b7SJohn Levon struct var_sym_list *expr_to_vsl(struct expression *expr); 474*1f5207b7SJohn Levon void add_var_sym(struct var_sym_list **list, const char *var, struct symbol *sym); 475*1f5207b7SJohn Levon void add_var_sym_expr(struct var_sym_list **list, struct expression *expr); 476*1f5207b7SJohn Levon void del_var_sym(struct var_sym_list **list, const char *var, struct symbol *sym); 477*1f5207b7SJohn Levon int in_var_sym_list(struct var_sym_list *list, const char *var, struct symbol *sym); 478*1f5207b7SJohn Levon struct var_sym_list *clone_var_sym_list(struct var_sym_list *from_vsl); 479*1f5207b7SJohn Levon void merge_var_sym_list(struct var_sym_list **dest, struct var_sym_list *src); 480*1f5207b7SJohn Levon struct var_sym_list *combine_var_sym_lists(struct var_sym_list *one, struct var_sym_list *two); 481*1f5207b7SJohn Levon int var_sym_lists_equiv(struct var_sym_list *one, struct var_sym_list *two); 482*1f5207b7SJohn Levon void free_var_sym_list(struct var_sym_list **list); 483*1f5207b7SJohn Levon void free_var_syms_and_list(struct var_sym_list **list); 484*1f5207b7SJohn Levon 485*1f5207b7SJohn Levon /* smatch_tracker */ 486*1f5207b7SJohn Levon struct tracker *alloc_tracker(int owner, const char *name, struct symbol *sym); 487*1f5207b7SJohn Levon void add_tracker(struct tracker_list **list, int owner, const char *name, 488*1f5207b7SJohn Levon struct symbol *sym); 489*1f5207b7SJohn Levon void add_tracker_expr(struct tracker_list **list, int owner, struct expression *expr); 490*1f5207b7SJohn Levon void del_tracker(struct tracker_list **list, int owner, const char *name, 491*1f5207b7SJohn Levon struct symbol *sym); 492*1f5207b7SJohn Levon int in_tracker_list(struct tracker_list *list, int owner, const char *name, 493*1f5207b7SJohn Levon struct symbol *sym); 494*1f5207b7SJohn Levon void free_tracker_list(struct tracker_list **list); 495*1f5207b7SJohn Levon void free_trackers_and_list(struct tracker_list **list); 496*1f5207b7SJohn Levon 497*1f5207b7SJohn Levon /* smatch_conditions */ 498*1f5207b7SJohn Levon int in_condition(void); 499*1f5207b7SJohn Levon 500*1f5207b7SJohn Levon /* smatch_flow.c */ 501*1f5207b7SJohn Levon 502*1f5207b7SJohn Levon extern int __in_fake_assign; 503*1f5207b7SJohn Levon extern int __in_fake_parameter_assign; 504*1f5207b7SJohn Levon extern int __in_fake_struct_assign; 505*1f5207b7SJohn Levon extern int in_fake_env; 506*1f5207b7SJohn Levon void smatch (int argc, char **argv); 507*1f5207b7SJohn Levon int inside_loop(void); 508*1f5207b7SJohn Levon int definitely_inside_loop(void); 509*1f5207b7SJohn Levon struct expression *get_switch_expr(void); 510*1f5207b7SJohn Levon int in_expression_statement(void); 511*1f5207b7SJohn Levon void __process_post_op_stack(void); 512*1f5207b7SJohn Levon void __split_expr(struct expression *expr); 513*1f5207b7SJohn Levon void __split_label_stmt(struct statement *stmt); 514*1f5207b7SJohn Levon void __split_stmt(struct statement *stmt); 515*1f5207b7SJohn Levon extern int __in_function_def; 516*1f5207b7SJohn Levon extern int option_assume_loops; 517*1f5207b7SJohn Levon extern int option_two_passes; 518*1f5207b7SJohn Levon extern int option_no_db; 519*1f5207b7SJohn Levon extern int option_file_output; 520*1f5207b7SJohn Levon extern int option_time; 521*1f5207b7SJohn Levon extern struct expression_list *big_expression_stack; 522*1f5207b7SJohn Levon extern struct expression_list *big_condition_stack; 523*1f5207b7SJohn Levon extern struct statement_list *big_statement_stack; 524*1f5207b7SJohn Levon int is_assigned_call(struct expression *expr); 525*1f5207b7SJohn Levon int inlinable(struct expression *expr); 526*1f5207b7SJohn Levon extern int __inline_call; 527*1f5207b7SJohn Levon extern struct expression *__inline_fn; 528*1f5207b7SJohn Levon extern int __in_pre_condition; 529*1f5207b7SJohn Levon extern int __bail_on_rest_of_function; 530*1f5207b7SJohn Levon extern struct statement *__prev_stmt; 531*1f5207b7SJohn Levon extern struct statement *__cur_stmt; 532*1f5207b7SJohn Levon extern struct statement *__next_stmt; 533*1f5207b7SJohn Levon void init_fake_env(void); 534*1f5207b7SJohn Levon void end_fake_env(void); 535*1f5207b7SJohn Levon int time_parsing_function(void); 536*1f5207b7SJohn Levon 537*1f5207b7SJohn Levon /* smatch_struct_assignment.c */ 538*1f5207b7SJohn Levon struct expression *get_faked_expression(void); 539*1f5207b7SJohn Levon void __fake_struct_member_assignments(struct expression *expr); 540*1f5207b7SJohn Levon 541*1f5207b7SJohn Levon /* smatch_project.c */ 542*1f5207b7SJohn Levon int is_no_inline_function(const char *function); 543*1f5207b7SJohn Levon 544*1f5207b7SJohn Levon /* smatch_conditions */ 545*1f5207b7SJohn Levon void __split_whole_condition(struct expression *expr); 546*1f5207b7SJohn Levon void __handle_logic(struct expression *expr); 547*1f5207b7SJohn Levon int is_condition(struct expression *expr); 548*1f5207b7SJohn Levon int __handle_condition_assigns(struct expression *expr); 549*1f5207b7SJohn Levon int __handle_select_assigns(struct expression *expr); 550*1f5207b7SJohn Levon int __handle_expr_statement_assigns(struct expression *expr); 551*1f5207b7SJohn Levon 552*1f5207b7SJohn Levon /* smatch_implied.c */ 553*1f5207b7SJohn Levon extern int option_debug_implied; 554*1f5207b7SJohn Levon extern int option_debug_related; 555*1f5207b7SJohn Levon struct range_list_stack; 556*1f5207b7SJohn Levon void param_limit_implications(struct expression *expr, int param, char *key, char *value); 557*1f5207b7SJohn Levon struct stree *__implied_case_stree(struct expression *switch_expr, 558*1f5207b7SJohn Levon struct range_list *case_rl, 559*1f5207b7SJohn Levon struct range_list_stack **remaining_cases, 560*1f5207b7SJohn Levon struct stree **raw_stree); 561*1f5207b7SJohn Levon void overwrite_states_using_pool(struct sm_state *gate_sm, struct sm_state *pool_sm); 562*1f5207b7SJohn Levon int assume(struct expression *expr); 563*1f5207b7SJohn Levon void end_assume(void); 564*1f5207b7SJohn Levon int impossible_assumption(struct expression *left, int op, sval_t sval); 565*1f5207b7SJohn Levon 566*1f5207b7SJohn Levon /* smatch_extras.c */ 567*1f5207b7SJohn Levon #define SMATCH_EXTRA 5 /* this is my_id from smatch extra set in smatch.c */ 568*1f5207b7SJohn Levon extern int RETURN_ID; 569*1f5207b7SJohn Levon 570*1f5207b7SJohn Levon struct data_range { 571*1f5207b7SJohn Levon sval_t min; 572*1f5207b7SJohn Levon sval_t max; 573*1f5207b7SJohn Levon }; 574*1f5207b7SJohn Levon 575*1f5207b7SJohn Levon #define MTAG_ALIAS_BIT (1ULL << 63) 576*1f5207b7SJohn Levon #define MTAG_OFFSET_MASK 0xfffULL 577*1f5207b7SJohn Levon 578*1f5207b7SJohn Levon extern long long valid_ptr_min, valid_ptr_max; 579*1f5207b7SJohn Levon extern sval_t valid_ptr_min_sval, valid_ptr_max_sval; 580*1f5207b7SJohn Levon extern struct range_list *valid_ptr_rl; 581*1f5207b7SJohn Levon static const sval_t array_min_sval = { 582*1f5207b7SJohn Levon .type = &ptr_ctype, 583*1f5207b7SJohn Levon {.value = 100000}, 584*1f5207b7SJohn Levon }; 585*1f5207b7SJohn Levon static const sval_t array_max_sval = { 586*1f5207b7SJohn Levon .type = &ptr_ctype, 587*1f5207b7SJohn Levon {.value = 199999}, 588*1f5207b7SJohn Levon }; 589*1f5207b7SJohn Levon static const sval_t text_seg_min = { 590*1f5207b7SJohn Levon .type = &ptr_ctype, 591*1f5207b7SJohn Levon {.value = 100000000}, 592*1f5207b7SJohn Levon }; 593*1f5207b7SJohn Levon static const sval_t text_seg_max = { 594*1f5207b7SJohn Levon .type = &ptr_ctype, 595*1f5207b7SJohn Levon {.value = 177777777}, 596*1f5207b7SJohn Levon }; 597*1f5207b7SJohn Levon static const sval_t data_seg_min = { 598*1f5207b7SJohn Levon .type = &ptr_ctype, 599*1f5207b7SJohn Levon {.value = 200000000}, 600*1f5207b7SJohn Levon }; 601*1f5207b7SJohn Levon static const sval_t data_seg_max = { 602*1f5207b7SJohn Levon .type = &ptr_ctype, 603*1f5207b7SJohn Levon {.value = 277777777}, 604*1f5207b7SJohn Levon }; 605*1f5207b7SJohn Levon static const sval_t bss_seg_min = { 606*1f5207b7SJohn Levon .type = &ptr_ctype, 607*1f5207b7SJohn Levon {.value = 300000000}, 608*1f5207b7SJohn Levon }; 609*1f5207b7SJohn Levon static const sval_t bss_seg_max = { 610*1f5207b7SJohn Levon .type = &ptr_ctype, 611*1f5207b7SJohn Levon {.value = 377777777}, 612*1f5207b7SJohn Levon }; 613*1f5207b7SJohn Levon static const sval_t stack_seg_min = { 614*1f5207b7SJohn Levon .type = &ptr_ctype, 615*1f5207b7SJohn Levon {.value = 400000000}, 616*1f5207b7SJohn Levon }; 617*1f5207b7SJohn Levon static const sval_t stack_seg_max = { 618*1f5207b7SJohn Levon .type = &ptr_ctype, 619*1f5207b7SJohn Levon {.value = 477777777}, 620*1f5207b7SJohn Levon }; 621*1f5207b7SJohn Levon static const sval_t kmalloc_seg_min = { 622*1f5207b7SJohn Levon .type = &ptr_ctype, 623*1f5207b7SJohn Levon {.value = 500000000}, 624*1f5207b7SJohn Levon }; 625*1f5207b7SJohn Levon static const sval_t kmalloc_seg_max = { 626*1f5207b7SJohn Levon .type = &ptr_ctype, 627*1f5207b7SJohn Levon {.value = 577777777}, 628*1f5207b7SJohn Levon }; 629*1f5207b7SJohn Levon static const sval_t vmalloc_seg_min = { 630*1f5207b7SJohn Levon .type = &ptr_ctype, 631*1f5207b7SJohn Levon {.value = 600000000}, 632*1f5207b7SJohn Levon }; 633*1f5207b7SJohn Levon static const sval_t vmalloc_seg_max = { 634*1f5207b7SJohn Levon .type = &ptr_ctype, 635*1f5207b7SJohn Levon {.value = 677777777}, 636*1f5207b7SJohn Levon }; 637*1f5207b7SJohn Levon static const sval_t fn_ptr_min = { 638*1f5207b7SJohn Levon .type = &ptr_ctype, 639*1f5207b7SJohn Levon {.value = 700000000}, 640*1f5207b7SJohn Levon }; 641*1f5207b7SJohn Levon static const sval_t fn_ptr_max = { 642*1f5207b7SJohn Levon .type = &ptr_ctype, 643*1f5207b7SJohn Levon {.value = 777777777}, 644*1f5207b7SJohn Levon }; 645*1f5207b7SJohn Levon 646*1f5207b7SJohn Levon char *get_other_name_sym(const char *name, struct symbol *sym, struct symbol **new_sym); 647*1f5207b7SJohn Levon char *map_call_to_other_name_sym(const char *name, struct symbol *sym, struct symbol **new_sym); 648*1f5207b7SJohn Levon char *map_long_to_short_name_sym(const char *name, struct symbol *sym, struct symbol **new_sym); 649*1f5207b7SJohn Levon char *map_long_to_short_name_sym_nostack(const char *name, struct symbol *sym, struct symbol **new_sym); 650*1f5207b7SJohn Levon 651*1f5207b7SJohn Levon #define STRLEN_MAX_RET 1010101 652*1f5207b7SJohn Levon 653*1f5207b7SJohn Levon /* smatch_absolute.c */ 654*1f5207b7SJohn Levon int get_absolute_min_helper(struct expression *expr, sval_t *sval); 655*1f5207b7SJohn Levon int get_absolute_max_helper(struct expression *expr, sval_t *sval); 656*1f5207b7SJohn Levon 657*1f5207b7SJohn Levon /* smatch_local_values.c */ 658*1f5207b7SJohn Levon int get_local_rl(struct expression *expr, struct range_list **rl); 659*1f5207b7SJohn Levon int get_local_max_helper(struct expression *expr, sval_t *sval); 660*1f5207b7SJohn Levon int get_local_min_helper(struct expression *expr, sval_t *sval); 661*1f5207b7SJohn Levon 662*1f5207b7SJohn Levon /* smatch_type_value.c */ 663*1f5207b7SJohn Levon int get_db_type_rl(struct expression *expr, struct range_list **rl); 664*1f5207b7SJohn Levon /* smatch_data_val.c */ 665*1f5207b7SJohn Levon int get_mtag_rl(struct expression *expr, struct range_list **rl); 666*1f5207b7SJohn Levon /* smatch_array_values.c */ 667*1f5207b7SJohn Levon int get_array_rl(struct expression *expr, struct range_list **rl); 668*1f5207b7SJohn Levon 669*1f5207b7SJohn Levon /* smatch_states.c */ 670*1f5207b7SJohn Levon void __swap_cur_stree(struct stree *stree); 671*1f5207b7SJohn Levon void __push_fake_cur_stree(); 672*1f5207b7SJohn Levon struct stree *__pop_fake_cur_stree(); 673*1f5207b7SJohn Levon void __free_fake_cur_stree(); 674*1f5207b7SJohn Levon void __set_fake_cur_stree_fast(struct stree *stree); 675*1f5207b7SJohn Levon void __pop_fake_cur_stree_fast(void); 676*1f5207b7SJohn Levon void __merge_stree_into_cur(struct stree *stree); 677*1f5207b7SJohn Levon 678*1f5207b7SJohn Levon int unreachable(void); 679*1f5207b7SJohn Levon void __set_sm(struct sm_state *sm); 680*1f5207b7SJohn Levon void __set_sm_cur_stree(struct sm_state *sm); 681*1f5207b7SJohn Levon void __set_sm_fake_stree(struct sm_state *sm); 682*1f5207b7SJohn Levon void __set_true_false_sm(struct sm_state *true_state, 683*1f5207b7SJohn Levon struct sm_state *false_state); 684*1f5207b7SJohn Levon void nullify_path(void); 685*1f5207b7SJohn Levon void __match_nullify_path_hook(const char *fn, struct expression *expr, 686*1f5207b7SJohn Levon void *unused); 687*1f5207b7SJohn Levon void __unnullify_path(void); 688*1f5207b7SJohn Levon int __path_is_null(void); 689*1f5207b7SJohn Levon void save_all_states(void); 690*1f5207b7SJohn Levon void restore_all_states(void); 691*1f5207b7SJohn Levon void free_goto_stack(void); 692*1f5207b7SJohn Levon void clear_all_states(void); 693*1f5207b7SJohn Levon 694*1f5207b7SJohn Levon struct sm_state *get_sm_state(int owner, const char *name, 695*1f5207b7SJohn Levon struct symbol *sym); 696*1f5207b7SJohn Levon struct sm_state *get_sm_state_expr(int owner, struct expression *expr); 697*1f5207b7SJohn Levon void __push_true_states(void); 698*1f5207b7SJohn Levon void __use_false_states(void); 699*1f5207b7SJohn Levon void __discard_false_states(void); 700*1f5207b7SJohn Levon void __merge_false_states(void); 701*1f5207b7SJohn Levon void __merge_true_states(void); 702*1f5207b7SJohn Levon 703*1f5207b7SJohn Levon void __negate_cond_stacks(void); 704*1f5207b7SJohn Levon void __use_pre_cond_states(void); 705*1f5207b7SJohn Levon void __use_cond_true_states(void); 706*1f5207b7SJohn Levon void __use_cond_false_states(void); 707*1f5207b7SJohn Levon void __push_cond_stacks(void); 708*1f5207b7SJohn Levon void __fold_in_set_states(void); 709*1f5207b7SJohn Levon void __free_set_states(void); 710*1f5207b7SJohn Levon struct stree *__copy_cond_true_states(void); 711*1f5207b7SJohn Levon struct stree *__copy_cond_false_states(void); 712*1f5207b7SJohn Levon struct stree *__pop_cond_true_stack(void); 713*1f5207b7SJohn Levon struct stree *__pop_cond_false_stack(void); 714*1f5207b7SJohn Levon void __and_cond_states(void); 715*1f5207b7SJohn Levon void __or_cond_states(void); 716*1f5207b7SJohn Levon void __save_pre_cond_states(void); 717*1f5207b7SJohn Levon void __discard_pre_cond_states(void); 718*1f5207b7SJohn Levon struct stree *__get_true_states(void); 719*1f5207b7SJohn Levon struct stree *__get_false_states(void); 720*1f5207b7SJohn Levon void __use_cond_states(void); 721*1f5207b7SJohn Levon extern struct state_list *__last_base_slist; 722*1f5207b7SJohn Levon 723*1f5207b7SJohn Levon void __push_continues(void); 724*1f5207b7SJohn Levon void __discard_continues(void); 725*1f5207b7SJohn Levon void __process_continues(void); 726*1f5207b7SJohn Levon void __merge_continues(void); 727*1f5207b7SJohn Levon 728*1f5207b7SJohn Levon void __push_breaks(void); 729*1f5207b7SJohn Levon void __process_breaks(void); 730*1f5207b7SJohn Levon int __has_breaks(void); 731*1f5207b7SJohn Levon void __merge_breaks(void); 732*1f5207b7SJohn Levon void __use_breaks(void); 733*1f5207b7SJohn Levon 734*1f5207b7SJohn Levon void __save_switch_states(struct expression *switch_expr); 735*1f5207b7SJohn Levon void __discard_switches(void); 736*1f5207b7SJohn Levon int have_remaining_cases(void); 737*1f5207b7SJohn Levon void __merge_switches(struct expression *switch_expr, struct range_list *case_rl); 738*1f5207b7SJohn Levon void __push_default(void); 739*1f5207b7SJohn Levon void __set_default(void); 740*1f5207b7SJohn Levon int __pop_default(void); 741*1f5207b7SJohn Levon 742*1f5207b7SJohn Levon void __push_conditions(void); 743*1f5207b7SJohn Levon void __discard_conditions(void); 744*1f5207b7SJohn Levon 745*1f5207b7SJohn Levon void __save_gotos(const char *name, struct symbol *sym); 746*1f5207b7SJohn Levon void __merge_gotos(const char *name, struct symbol *sym); 747*1f5207b7SJohn Levon 748*1f5207b7SJohn Levon void __print_cur_stree(void); 749*1f5207b7SJohn Levon 750*1f5207b7SJohn Levon /* smatch_hooks.c */ 751*1f5207b7SJohn Levon void __pass_to_client(void *data, enum hook_type type); 752*1f5207b7SJohn Levon void __pass_to_client_no_data(enum hook_type type); 753*1f5207b7SJohn Levon void __pass_case_to_client(struct expression *switch_expr, 754*1f5207b7SJohn Levon struct range_list *rl); 755*1f5207b7SJohn Levon int __has_merge_function(int client_id); 756*1f5207b7SJohn Levon struct smatch_state *__client_merge_function(int owner, 757*1f5207b7SJohn Levon struct smatch_state *s1, 758*1f5207b7SJohn Levon struct smatch_state *s2); 759*1f5207b7SJohn Levon struct smatch_state *__client_unmatched_state_function(struct sm_state *sm); 760*1f5207b7SJohn Levon void call_pre_merge_hook(struct sm_state *sm); 761*1f5207b7SJohn Levon void __push_scope_hooks(void); 762*1f5207b7SJohn Levon void __call_scope_hooks(void); 763*1f5207b7SJohn Levon 764*1f5207b7SJohn Levon /* smatch_function_hooks.c */ 765*1f5207b7SJohn Levon void create_function_hook_hash(void); 766*1f5207b7SJohn Levon void __match_initializer_call(struct symbol *sym); 767*1f5207b7SJohn Levon 768*1f5207b7SJohn Levon /* smatch_db.c */ 769*1f5207b7SJohn Levon enum info_type { 770*1f5207b7SJohn Levon INTERNAL = 0, 771*1f5207b7SJohn Levon /* 772*1f5207b7SJohn Levon * Changing these numbers is a pain. Don't do it. If you ever use a 773*1f5207b7SJohn Levon * number it can't be re-used right away so there may be gaps. 774*1f5207b7SJohn Levon * We select these in order by type so if the order matters, then give 775*1f5207b7SJohn Levon * it a number below 100-999,9000-9999 ranges. */ 776*1f5207b7SJohn Levon 777*1f5207b7SJohn Levon PARAM_CLEARED = 101, 778*1f5207b7SJohn Levon PARAM_LIMIT = 103, 779*1f5207b7SJohn Levon PARAM_FILTER = 104, 780*1f5207b7SJohn Levon 781*1f5207b7SJohn Levon PARAM_VALUE = 1001, 782*1f5207b7SJohn Levon BUF_SIZE = 1002, 783*1f5207b7SJohn Levon USER_DATA = 1003, 784*1f5207b7SJohn Levon CAPPED_DATA = 1004, 785*1f5207b7SJohn Levon RETURN_VALUE = 1005, 786*1f5207b7SJohn Levon DEREFERENCE = 1006, 787*1f5207b7SJohn Levon RANGE_CAP = 1007, 788*1f5207b7SJohn Levon LOCK_HELD = 1008, 789*1f5207b7SJohn Levon LOCK_RELEASED = 1009, 790*1f5207b7SJohn Levon ABSOLUTE_LIMITS = 1010, 791*1f5207b7SJohn Levon PARAM_ADD = 1012, 792*1f5207b7SJohn Levon PARAM_FREED = 1013, 793*1f5207b7SJohn Levon DATA_SOURCE = 1014, 794*1f5207b7SJohn Levon FUZZY_MAX = 1015, 795*1f5207b7SJohn Levon STR_LEN = 1016, 796*1f5207b7SJohn Levon ARRAY_LEN = 1017, 797*1f5207b7SJohn Levon CAPABLE = 1018, 798*1f5207b7SJohn Levon NS_CAPABLE = 1019, 799*1f5207b7SJohn Levon CONTAINER = 1020, 800*1f5207b7SJohn Levon CASTED_CALL = 1021, 801*1f5207b7SJohn Levon TYPE_LINK = 1022, 802*1f5207b7SJohn Levon UNTRACKED_PARAM = 1023, 803*1f5207b7SJohn Levon CULL_PATH = 1024, 804*1f5207b7SJohn Levon PARAM_SET = 1025, 805*1f5207b7SJohn Levon PARAM_USED = 1026, 806*1f5207b7SJohn Levon BYTE_UNITS = 1027, 807*1f5207b7SJohn Levon COMPARE_LIMIT = 1028, 808*1f5207b7SJohn Levon PARAM_COMPARE = 1029, 809*1f5207b7SJohn Levon CONSTRAINT = 1031, 810*1f5207b7SJohn Levon PASSES_TYPE = 1032, 811*1f5207b7SJohn Levon CONSTRAINT_REQUIRED = 1033, 812*1f5207b7SJohn Levon NOSPEC = 1035, 813*1f5207b7SJohn Levon NOSPEC_WB = 1036, 814*1f5207b7SJohn Levon STMT_CNT = 1037, 815*1f5207b7SJohn Levon TERMINATED = 1038, 816*1f5207b7SJohn Levon 817*1f5207b7SJohn Levon /* put random temporary stuff in the 7000-7999 range for testing */ 818*1f5207b7SJohn Levon USER_DATA3 = 8017, 819*1f5207b7SJohn Levon USER_DATA3_SET = 9017, 820*1f5207b7SJohn Levon NO_OVERFLOW = 8018, 821*1f5207b7SJohn Levon NO_OVERFLOW_SIMPLE = 8019, 822*1f5207b7SJohn Levon LOCKED = 8020, 823*1f5207b7SJohn Levon UNLOCKED = 8021, 824*1f5207b7SJohn Levon SET_FS = 8022, 825*1f5207b7SJohn Levon ATOMIC_INC = 8023, 826*1f5207b7SJohn Levon ATOMIC_DEC = 8024, 827*1f5207b7SJohn Levon NO_SIDE_EFFECT = 8025, 828*1f5207b7SJohn Levon FN_ARG_LINK = 8028, 829*1f5207b7SJohn Levon DATA_VALUE = 8029, 830*1f5207b7SJohn Levon ARRAYSIZE_ARG = 8033, 831*1f5207b7SJohn Levon SIZEOF_ARG = 8034, 832*1f5207b7SJohn Levon MEMORY_TAG = 8036, 833*1f5207b7SJohn Levon MTAG_ASSIGN = 8035, 834*1f5207b7SJohn Levon STRING_VALUE = 8041, 835*1f5207b7SJohn Levon }; 836*1f5207b7SJohn Levon 837*1f5207b7SJohn Levon extern struct sqlite3 *smatch_db; 838*1f5207b7SJohn Levon extern struct sqlite3 *mem_db; 839*1f5207b7SJohn Levon extern struct sqlite3 *cache_db; 840*1f5207b7SJohn Levon 841*1f5207b7SJohn Levon void db_ignore_states(int id); 842*1f5207b7SJohn Levon void select_caller_info_hook(void (*callback)(const char *name, struct symbol *sym, char *key, char *value), int type); 843*1f5207b7SJohn Levon void add_member_info_callback(int owner, void (*callback)(struct expression *call, int param, char *printed_name, struct sm_state *sm)); 844*1f5207b7SJohn Levon void add_split_return_callback(void (*fn)(int return_id, char *return_ranges, struct expression *returned_expr)); 845*1f5207b7SJohn Levon 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)); 846*1f5207b7SJohn Levon void select_call_implies_hook(int type, void (*callback)(struct expression *call, struct expression *arg, char *key, char *value)); 847*1f5207b7SJohn Levon void select_return_implies_hook(int type, void (*callback)(struct expression *call, struct expression *arg, char *key, char *value)); 848*1f5207b7SJohn Levon struct range_list *db_return_vals(struct expression *expr); 849*1f5207b7SJohn Levon struct range_list *db_return_vals_from_str(const char *fn_name); 850*1f5207b7SJohn Levon char *return_state_to_var_sym(struct expression *expr, int param, const char *key, struct symbol **sym); 851*1f5207b7SJohn Levon char *get_chunk_from_key(struct expression *arg, char *key, struct symbol **sym, struct var_sym_list **vsl); 852*1f5207b7SJohn Levon char *get_variable_from_key(struct expression *arg, const char *key, struct symbol **sym); 853*1f5207b7SJohn Levon const char *state_name_to_param_name(const char *state_name, const char *param_name); 854*1f5207b7SJohn Levon const char *get_param_name_var_sym(const char *name, struct symbol *sym); 855*1f5207b7SJohn Levon const char *get_param_name(struct sm_state *sm); 856*1f5207b7SJohn Levon const char *get_mtag_name_var_sym(const char *state_name, struct symbol *sym); 857*1f5207b7SJohn Levon const char *get_mtag_name_expr(struct expression *expr); 858*1f5207b7SJohn Levon char *get_data_info_name(struct expression *expr); 859*1f5207b7SJohn Levon 860*1f5207b7SJohn Levon char *escape_newlines(const char *str); 861*1f5207b7SJohn Levon void sql_exec(struct sqlite3 *db, int (*callback)(void*, int, char**, char**), void *data, const char *sql); 862*1f5207b7SJohn Levon 863*1f5207b7SJohn Levon #define sql_helper(db, call_back, data, sql...) \ 864*1f5207b7SJohn Levon do { \ 865*1f5207b7SJohn Levon char sql_txt[1024]; \ 866*1f5207b7SJohn Levon \ 867*1f5207b7SJohn Levon sqlite3_snprintf(sizeof(sql_txt), sql_txt, sql); \ 868*1f5207b7SJohn Levon sm_debug("debug: %s\n", sql_txt); \ 869*1f5207b7SJohn Levon sql_exec(db, call_back, data, sql_txt); \ 870*1f5207b7SJohn Levon } while (0) 871*1f5207b7SJohn Levon 872*1f5207b7SJohn Levon 873*1f5207b7SJohn Levon #define run_sql(call_back, data, sql...) \ 874*1f5207b7SJohn Levon do { \ 875*1f5207b7SJohn Levon if (option_no_db) \ 876*1f5207b7SJohn Levon break; \ 877*1f5207b7SJohn Levon sql_helper(smatch_db, call_back, data, sql); \ 878*1f5207b7SJohn Levon } while (0) 879*1f5207b7SJohn Levon 880*1f5207b7SJohn Levon #define mem_sql(call_back, data, sql...) \ 881*1f5207b7SJohn Levon sql_helper(mem_db, call_back, data, sql) 882*1f5207b7SJohn Levon 883*1f5207b7SJohn Levon #define cache_sql(call_back, data, sql...) \ 884*1f5207b7SJohn Levon sql_helper(cache_db, call_back, data, sql) 885*1f5207b7SJohn Levon 886*1f5207b7SJohn Levon #define sql_insert_helper(table, db, ignore, late, values...) \ 887*1f5207b7SJohn Levon do { \ 888*1f5207b7SJohn Levon struct sqlite3 *_db = db; \ 889*1f5207b7SJohn Levon \ 890*1f5207b7SJohn Levon if (__inline_fn && !_db) \ 891*1f5207b7SJohn Levon _db = mem_db; \ 892*1f5207b7SJohn Levon if (_db) { \ 893*1f5207b7SJohn Levon char buf[1024]; \ 894*1f5207b7SJohn Levon char *err, *p = buf; \ 895*1f5207b7SJohn Levon int rc; \ 896*1f5207b7SJohn Levon \ 897*1f5207b7SJohn Levon p += snprintf(p, buf + sizeof(buf) - p, \ 898*1f5207b7SJohn Levon "insert %sinto %s values (", \ 899*1f5207b7SJohn Levon ignore ? "or ignore " : "", #table); \ 900*1f5207b7SJohn Levon p += snprintf(p, buf + sizeof(buf) - p, values); \ 901*1f5207b7SJohn Levon p += snprintf(p, buf + sizeof(buf) - p, ");"); \ 902*1f5207b7SJohn Levon sm_debug("mem-db: %s\n", buf); \ 903*1f5207b7SJohn Levon rc = sqlite3_exec(_db, buf, NULL, NULL, &err); \ 904*1f5207b7SJohn Levon if (rc != SQLITE_OK) { \ 905*1f5207b7SJohn Levon sm_ierror("SQL error #2: %s", err); \ 906*1f5207b7SJohn Levon sm_ierror("SQL: '%s'", buf); \ 907*1f5207b7SJohn Levon parse_error = 1; \ 908*1f5207b7SJohn Levon } \ 909*1f5207b7SJohn Levon break; \ 910*1f5207b7SJohn Levon } \ 911*1f5207b7SJohn Levon if (option_info) { \ 912*1f5207b7SJohn Levon FILE *tmp_fd = sm_outfd; \ 913*1f5207b7SJohn Levon sm_outfd = sql_outfd; \ 914*1f5207b7SJohn Levon sm_prefix(); \ 915*1f5207b7SJohn Levon sm_printf("SQL%s: insert %sinto " #table " values(", \ 916*1f5207b7SJohn Levon late ? "_late" : "", ignore ? "or ignore " : ""); \ 917*1f5207b7SJohn Levon sm_printf(values); \ 918*1f5207b7SJohn Levon sm_printf(");\n"); \ 919*1f5207b7SJohn Levon sm_outfd = tmp_fd; \ 920*1f5207b7SJohn Levon } \ 921*1f5207b7SJohn Levon } while (0) 922*1f5207b7SJohn Levon 923*1f5207b7SJohn Levon #define sql_insert(table, values...) sql_insert_helper(table, 0, 0, 0, values); 924*1f5207b7SJohn Levon #define sql_insert_or_ignore(table, values...) sql_insert_helper(table, 0, 1, 0, values); 925*1f5207b7SJohn Levon #define sql_insert_late(table, values...) sql_insert_helper(table, 0, 0, 1, values); 926*1f5207b7SJohn Levon #define sql_insert_cache(table, values...) sql_insert_helper(table, cache_db, 1, 0, values); 927*1f5207b7SJohn Levon 928*1f5207b7SJohn Levon char *get_static_filter(struct symbol *sym); 929*1f5207b7SJohn Levon 930*1f5207b7SJohn Levon void sql_insert_return_states(int return_id, const char *return_ranges, 931*1f5207b7SJohn Levon int type, int param, const char *key, const char *value); 932*1f5207b7SJohn Levon void sql_insert_caller_info(struct expression *call, int type, int param, 933*1f5207b7SJohn Levon const char *key, const char *value); 934*1f5207b7SJohn Levon void sql_insert_function_ptr(const char *fn, const char *struct_name); 935*1f5207b7SJohn Levon void sql_insert_return_values(const char *return_values); 936*1f5207b7SJohn Levon void sql_insert_return_implies(int type, int param, const char *key, const char *value); 937*1f5207b7SJohn Levon void sql_insert_function_type_size(const char *member, const char *ranges); 938*1f5207b7SJohn Levon void sql_insert_function_type_info(int type, const char *struct_type, const char *member, const char *value); 939*1f5207b7SJohn Levon void sql_insert_type_info(int type, const char *member, const char *value); 940*1f5207b7SJohn Levon void sql_insert_local_values(const char *name, const char *value); 941*1f5207b7SJohn Levon void sql_insert_function_type_value(const char *type, const char *value); 942*1f5207b7SJohn Levon void sql_insert_function_type(int param, const char *value); 943*1f5207b7SJohn Levon void sql_insert_parameter_name(int param, const char *value); 944*1f5207b7SJohn Levon void sql_insert_data_info(struct expression *data, int type, const char *value); 945*1f5207b7SJohn Levon void sql_insert_data_info_var_sym(const char *var, struct symbol *sym, int type, const char *value); 946*1f5207b7SJohn Levon void sql_save_constraint(const char *con); 947*1f5207b7SJohn Levon void sql_save_constraint_required(const char *data, int op, const char *limit); 948*1f5207b7SJohn Levon void sql_copy_constraint_required(const char *new_limit, const char *old_limit); 949*1f5207b7SJohn Levon void sql_insert_fn_ptr_data_link(const char *ptr, const char *data); 950*1f5207b7SJohn Levon void sql_insert_fn_data_link(struct expression *fn, int type, int param, const char *key, const char *value); 951*1f5207b7SJohn Levon void sql_insert_mtag_about(mtag_t tag, const char *left_name, const char *right_name); 952*1f5207b7SJohn Levon void insert_mtag_data(sval_t sval, struct range_list *rl); 953*1f5207b7SJohn Levon void sql_insert_mtag_map(mtag_t tag, int offset, mtag_t container); 954*1f5207b7SJohn Levon void sql_insert_mtag_alias(mtag_t orig, mtag_t alias); 955*1f5207b7SJohn Levon int mtag_map_select_container(mtag_t tag, int offset, mtag_t *container); 956*1f5207b7SJohn Levon int mtag_map_select_tag(mtag_t container, int offset, mtag_t *tag); 957*1f5207b7SJohn Levon 958*1f5207b7SJohn Levon void sql_select_return_states(const char *cols, struct expression *call, 959*1f5207b7SJohn Levon int (*callback)(void*, int, char**, char**), void *info); 960*1f5207b7SJohn Levon void sql_select_call_implies(const char *cols, struct expression *call, 961*1f5207b7SJohn Levon int (*callback)(void*, int, char**, char**)); 962*1f5207b7SJohn Levon 963*1f5207b7SJohn Levon void open_smatch_db(char *db_file); 964*1f5207b7SJohn Levon 965*1f5207b7SJohn Levon /* smatch_files.c */ 966*1f5207b7SJohn Levon int open_data_file(const char *filename); 967*1f5207b7SJohn Levon int open_schema_file(const char *schema); 968*1f5207b7SJohn Levon struct token *get_tokens_file(const char *filename); 969*1f5207b7SJohn Levon 970*1f5207b7SJohn Levon /* smatch.c */ 971*1f5207b7SJohn Levon extern char *option_debug_check; 972*1f5207b7SJohn Levon extern char *option_project_str; 973*1f5207b7SJohn Levon extern char *bin_dir; 974*1f5207b7SJohn Levon extern char *data_dir; 975*1f5207b7SJohn Levon extern int option_no_data; 976*1f5207b7SJohn Levon extern int option_full_path; 977*1f5207b7SJohn Levon extern int option_param_mapper; 978*1f5207b7SJohn Levon extern int option_call_tree; 979*1f5207b7SJohn Levon extern int num_checks; 980*1f5207b7SJohn Levon 981*1f5207b7SJohn Levon enum project_type { 982*1f5207b7SJohn Levon PROJ_NONE, 983*1f5207b7SJohn Levon PROJ_KERNEL, 984*1f5207b7SJohn Levon PROJ_WINE, 985*1f5207b7SJohn Levon PROJ_ILLUMOS_KERNEL, 986*1f5207b7SJohn Levon PROJ_ILLUMOS_USER, 987*1f5207b7SJohn Levon PROJ_UNKNOWN, 988*1f5207b7SJohn Levon }; 989*1f5207b7SJohn Levon extern enum project_type option_project; 990*1f5207b7SJohn Levon const char *check_name(unsigned short id); 991*1f5207b7SJohn Levon int id_from_name(const char *name); 992*1f5207b7SJohn Levon 993*1f5207b7SJohn Levon 994*1f5207b7SJohn Levon /* smatch_buf_size.c */ 995*1f5207b7SJohn Levon int get_array_size(struct expression *expr); 996*1f5207b7SJohn Levon int get_array_size_bytes(struct expression *expr); 997*1f5207b7SJohn Levon int get_array_size_bytes_min(struct expression *expr); 998*1f5207b7SJohn Levon int get_array_size_bytes_max(struct expression *expr); 999*1f5207b7SJohn Levon struct range_list *get_array_size_bytes_rl(struct expression *expr); 1000*1f5207b7SJohn Levon int get_real_array_size(struct expression *expr); 1001*1f5207b7SJohn Levon int last_member_is_resizable(struct symbol *type); 1002*1f5207b7SJohn Levon /* smatch_strlen.c */ 1003*1f5207b7SJohn Levon int get_implied_strlen(struct expression *expr, struct range_list **rl); 1004*1f5207b7SJohn Levon int get_size_from_strlen(struct expression *expr); 1005*1f5207b7SJohn Levon 1006*1f5207b7SJohn Levon /* smatch_capped.c */ 1007*1f5207b7SJohn Levon int is_capped(struct expression *expr); 1008*1f5207b7SJohn Levon int is_capped_var_sym(const char *name, struct symbol *sym); 1009*1f5207b7SJohn Levon 1010*1f5207b7SJohn Levon /* check_user_data.c */ 1011*1f5207b7SJohn Levon int is_user_macro(struct expression *expr); 1012*1f5207b7SJohn Levon int is_user_data(struct expression *expr); 1013*1f5207b7SJohn Levon int is_capped_user_data(struct expression *expr); 1014*1f5207b7SJohn Levon int implied_user_data(struct expression *expr, struct range_list **rl); 1015*1f5207b7SJohn Levon struct stree *get_user_stree(void); 1016*1f5207b7SJohn Levon int get_user_rl(struct expression *expr, struct range_list **rl); 1017*1f5207b7SJohn Levon int get_user_rl_spammy(struct expression *expr, struct range_list **rl); 1018*1f5207b7SJohn Levon int is_user_rl(struct expression *expr); 1019*1f5207b7SJohn Levon int get_user_rl_var_sym(const char *name, struct symbol *sym, struct range_list **rl); 1020*1f5207b7SJohn Levon 1021*1f5207b7SJohn Levon /* check_locking.c */ 1022*1f5207b7SJohn Levon void print_held_locks(); 1023*1f5207b7SJohn Levon 1024*1f5207b7SJohn Levon /* check_assigned_expr.c */ 1025*1f5207b7SJohn Levon struct expression *get_assigned_expr(struct expression *expr); 1026*1f5207b7SJohn Levon struct expression *get_assigned_expr_name_sym(const char *name, struct symbol *sym); 1027*1f5207b7SJohn Levon /* smatch_return_to_param.c */ 1028*1f5207b7SJohn Levon void __add_return_to_param_mapping(struct expression *assign, const char *return_string); 1029*1f5207b7SJohn Levon char *map_call_to_param_name_sym(struct expression *expr, struct symbol **sym); 1030*1f5207b7SJohn Levon 1031*1f5207b7SJohn Levon /* smatch_comparison.c */ 1032*1f5207b7SJohn Levon struct compare_data { 1033*1f5207b7SJohn Levon /* The ->left and ->right expression pointers might be NULL (I'm lazy) */ 1034*1f5207b7SJohn Levon struct expression *left; 1035*1f5207b7SJohn Levon const char *left_var; 1036*1f5207b7SJohn Levon struct var_sym_list *left_vsl; 1037*1f5207b7SJohn Levon int comparison; 1038*1f5207b7SJohn Levon struct expression *right; 1039*1f5207b7SJohn Levon const char *right_var; 1040*1f5207b7SJohn Levon struct var_sym_list *right_vsl; 1041*1f5207b7SJohn Levon }; 1042*1f5207b7SJohn Levon DECLARE_ALLOCATOR(compare_data); 1043*1f5207b7SJohn Levon struct smatch_state *alloc_compare_state( 1044*1f5207b7SJohn Levon struct expression *left, 1045*1f5207b7SJohn Levon const char *left_var, struct var_sym_list *left_vsl, 1046*1f5207b7SJohn Levon int comparison, 1047*1f5207b7SJohn Levon struct expression *right, 1048*1f5207b7SJohn Levon const char *right_var, struct var_sym_list *right_vsl); 1049*1f5207b7SJohn Levon int filter_comparison(int orig, int op); 1050*1f5207b7SJohn Levon int merge_comparisons(int one, int two); 1051*1f5207b7SJohn Levon int combine_comparisons(int left_compare, int right_compare); 1052*1f5207b7SJohn Levon int state_to_comparison(struct smatch_state *state); 1053*1f5207b7SJohn Levon struct smatch_state *merge_compare_states(struct smatch_state *s1, struct smatch_state *s2); 1054*1f5207b7SJohn Levon int get_comparison(struct expression *left, struct expression *right); 1055*1f5207b7SJohn Levon int get_comparison_strings(const char *one, const char *two); 1056*1f5207b7SJohn Levon int possible_comparison(struct expression *a, int comparison, struct expression *b); 1057*1f5207b7SJohn Levon struct state_list *get_all_comparisons(struct expression *expr); 1058*1f5207b7SJohn Levon struct state_list *get_all_possible_equal_comparisons(struct expression *expr); 1059*1f5207b7SJohn Levon void __add_return_comparison(struct expression *call, const char *range); 1060*1f5207b7SJohn Levon void __add_comparison_info(struct expression *expr, struct expression *call, const char *range); 1061*1f5207b7SJohn Levon char *get_printed_param_name(struct expression *call, const char *param_name, struct symbol *param_sym); 1062*1f5207b7SJohn Levon char *name_sym_to_param_comparison(const char *name, struct symbol *sym); 1063*1f5207b7SJohn Levon char *expr_equal_to_param(struct expression *expr, int ignore); 1064*1f5207b7SJohn Levon char *expr_lte_to_param(struct expression *expr, int ignore); 1065*1f5207b7SJohn Levon char *expr_param_comparison(struct expression *expr, int ignore); 1066*1f5207b7SJohn Levon int flip_comparison(int op); 1067*1f5207b7SJohn Levon int negate_comparison(int op); 1068*1f5207b7SJohn Levon int remove_unsigned_from_comparison(int op); 1069*1f5207b7SJohn Levon int param_compare_limit_is_impossible(struct expression *expr, int left_param, char *left_key, char *value); 1070*1f5207b7SJohn Levon void filter_by_comparison(struct range_list **rl, int comparison, struct range_list *right); 1071*1f5207b7SJohn Levon struct sm_state *comparison_implication_hook(struct expression *expr, 1072*1f5207b7SJohn Levon struct state_list **true_stack, 1073*1f5207b7SJohn Levon struct state_list **false_stack); 1074*1f5207b7SJohn Levon void __compare_param_limit_hook(struct expression *left_expr, struct expression *right_expr, 1075*1f5207b7SJohn Levon const char *state_name, 1076*1f5207b7SJohn Levon struct smatch_state *true_state, struct smatch_state *false_state); 1077*1f5207b7SJohn Levon int impossibly_high_comparison(struct expression *expr); 1078*1f5207b7SJohn Levon 1079*1f5207b7SJohn Levon /* smatch_sval.c */ 1080*1f5207b7SJohn Levon sval_t *sval_alloc(sval_t sval); 1081*1f5207b7SJohn Levon sval_t *sval_alloc_permanent(sval_t sval); 1082*1f5207b7SJohn Levon sval_t sval_blank(struct expression *expr); 1083*1f5207b7SJohn Levon sval_t sval_type_val(struct symbol *type, long long val); 1084*1f5207b7SJohn Levon sval_t sval_from_val(struct expression *expr, long long val); 1085*1f5207b7SJohn Levon int sval_is_ptr(sval_t sval); 1086*1f5207b7SJohn Levon int sval_unsigned(sval_t sval); 1087*1f5207b7SJohn Levon int sval_signed(sval_t sval); 1088*1f5207b7SJohn Levon int sval_bits(sval_t sval); 1089*1f5207b7SJohn Levon int sval_bits_used(sval_t sval); 1090*1f5207b7SJohn Levon int sval_is_negative(sval_t sval); 1091*1f5207b7SJohn Levon int sval_is_positive(sval_t sval); 1092*1f5207b7SJohn Levon int sval_is_min(sval_t sval); 1093*1f5207b7SJohn Levon int sval_is_max(sval_t sval); 1094*1f5207b7SJohn Levon int sval_is_a_min(sval_t sval); 1095*1f5207b7SJohn Levon int sval_is_a_max(sval_t sval); 1096*1f5207b7SJohn Levon int sval_is_negative_min(sval_t sval); 1097*1f5207b7SJohn Levon int sval_cmp_t(struct symbol *type, sval_t one, sval_t two); 1098*1f5207b7SJohn Levon int sval_cmp_val(sval_t one, long long val); 1099*1f5207b7SJohn Levon sval_t sval_min(sval_t one, sval_t two); 1100*1f5207b7SJohn Levon sval_t sval_max(sval_t one, sval_t two); 1101*1f5207b7SJohn Levon int sval_too_low(struct symbol *type, sval_t sval); 1102*1f5207b7SJohn Levon int sval_too_high(struct symbol *type, sval_t sval); 1103*1f5207b7SJohn Levon int sval_fits(struct symbol *type, sval_t sval); 1104*1f5207b7SJohn Levon sval_t sval_cast(struct symbol *type, sval_t sval); 1105*1f5207b7SJohn Levon sval_t sval_preop(sval_t sval, int op); 1106*1f5207b7SJohn Levon sval_t sval_binop(sval_t left, int op, sval_t right); 1107*1f5207b7SJohn Levon int sval_binop_overflows(sval_t left, int op, sval_t right); 1108*1f5207b7SJohn Levon int sval_binop_overflows_no_sign(sval_t left, int op, sval_t right); 1109*1f5207b7SJohn Levon unsigned long long fls_mask(unsigned long long uvalue); 1110*1f5207b7SJohn Levon unsigned long long sval_fls_mask(sval_t sval); 1111*1f5207b7SJohn Levon const char *sval_to_str(sval_t sval); 1112*1f5207b7SJohn Levon const char *sval_to_numstr(sval_t sval); 1113*1f5207b7SJohn Levon sval_t ll_to_sval(long long val); 1114*1f5207b7SJohn Levon 1115*1f5207b7SJohn Levon /* smatch_string_list.c */ 1116*1f5207b7SJohn Levon int list_has_string(struct string_list *str_list, const char *str); 1117*1f5207b7SJohn Levon void insert_string(struct string_list **str_list, const char *str); 1118*1f5207b7SJohn Levon struct string_list *clone_str_list(struct string_list *orig); 1119*1f5207b7SJohn Levon struct string_list *combine_string_lists(struct string_list *one, struct string_list *two); 1120*1f5207b7SJohn Levon 1121*1f5207b7SJohn Levon /* smatch_start_states.c */ 1122*1f5207b7SJohn Levon struct stree *get_start_states(void); 1123*1f5207b7SJohn Levon 1124*1f5207b7SJohn Levon /* smatch_recurse.c */ 1125*1f5207b7SJohn Levon int has_symbol(struct expression *expr, struct symbol *sym); 1126*1f5207b7SJohn Levon int has_variable(struct expression *expr, struct expression *var); 1127*1f5207b7SJohn Levon int has_inc_dec(struct expression *expr); 1128*1f5207b7SJohn Levon 1129*1f5207b7SJohn Levon /* smatch_stored_conditions.c */ 1130*1f5207b7SJohn Levon struct smatch_state *get_stored_condition(struct expression *expr); 1131*1f5207b7SJohn Levon struct expression_list *get_conditions(struct expression *expr); 1132*1f5207b7SJohn Levon struct sm_state *stored_condition_implication_hook(struct expression *expr, 1133*1f5207b7SJohn Levon struct state_list **true_stack, 1134*1f5207b7SJohn Levon struct state_list **false_stack); 1135*1f5207b7SJohn Levon 1136*1f5207b7SJohn Levon /* check_string_len.c */ 1137*1f5207b7SJohn Levon int get_formatted_string_size(struct expression *call, int arg); 1138*1f5207b7SJohn Levon 1139*1f5207b7SJohn Levon /* smatch_param_set.c */ 1140*1f5207b7SJohn Levon int param_was_set(struct expression *expr); 1141*1f5207b7SJohn Levon int param_was_set_var_sym(const char *name, struct symbol *sym); 1142*1f5207b7SJohn Levon /* smatch_param_filter.c */ 1143*1f5207b7SJohn Levon int param_has_filter_data(struct sm_state *sm); 1144*1f5207b7SJohn Levon 1145*1f5207b7SJohn Levon /* smatch_links.c */ 1146*1f5207b7SJohn Levon void set_up_link_functions(int id, int linkid); 1147*1f5207b7SJohn Levon struct smatch_state *merge_link_states(struct smatch_state *s1, struct smatch_state *s2); 1148*1f5207b7SJohn Levon void store_link(int link_id, const char *name, struct symbol *sym, const char *link_name, struct symbol *link_sym); 1149*1f5207b7SJohn Levon 1150*1f5207b7SJohn Levon /* smatch_auto_copy.c */ 1151*1f5207b7SJohn Levon void set_auto_copy(int owner); 1152*1f5207b7SJohn Levon 1153*1f5207b7SJohn Levon /* check_buf_comparison */ 1154*1f5207b7SJohn Levon struct expression *get_size_variable(struct expression *buf); 1155*1f5207b7SJohn Levon struct expression *get_array_variable(struct expression *size); 1156*1f5207b7SJohn Levon 1157*1f5207b7SJohn Levon /* smatch_untracked_param.c */ 1158*1f5207b7SJohn Levon void mark_untracked(struct expression *expr, int param, const char *key, const char *value); 1159*1f5207b7SJohn Levon void add_untracked_param_hook(void (func)(struct expression *call, int param)); 1160*1f5207b7SJohn Levon void mark_all_params_untracked(int return_id, char *return_ranges, struct expression *expr); 1161*1f5207b7SJohn Levon 1162*1f5207b7SJohn Levon /* smatch_strings.c */ 1163*1f5207b7SJohn Levon struct state_list *get_strings(struct expression *expr); 1164*1f5207b7SJohn Levon struct expression *fake_string_from_mtag(mtag_t tag); 1165*1f5207b7SJohn Levon 1166*1f5207b7SJohn Levon /* smatch_estate.c */ 1167*1f5207b7SJohn Levon int estate_get_single_value(struct smatch_state *state, sval_t *sval); 1168*1f5207b7SJohn Levon 1169*1f5207b7SJohn Levon /* smatch_address.c */ 1170*1f5207b7SJohn Levon int get_address_rl(struct expression *expr, struct range_list **rl); 1171*1f5207b7SJohn Levon int get_member_offset(struct symbol *type, const char *member_name); 1172*1f5207b7SJohn Levon int get_member_offset_from_deref(struct expression *expr); 1173*1f5207b7SJohn Levon 1174*1f5207b7SJohn Levon /* for now this is in smatch_used_parameter.c */ 1175*1f5207b7SJohn Levon void __get_state_hook(int owner, const char *name, struct symbol *sym); 1176*1f5207b7SJohn Levon 1177*1f5207b7SJohn Levon /* smatch_buf_comparison.c */ 1178*1f5207b7SJohn Levon int db_var_is_array_limit(struct expression *array, const char *name, struct var_sym_list *vsl); 1179*1f5207b7SJohn Levon 1180*1f5207b7SJohn Levon struct stree *get_all_return_states(void); 1181*1f5207b7SJohn Levon struct stree_stack *get_all_return_strees(void); 1182*1f5207b7SJohn Levon int on_atomic_dec_path(void); 1183*1f5207b7SJohn Levon int was_inced(const char *name, struct symbol *sym); 1184*1f5207b7SJohn Levon 1185*1f5207b7SJohn Levon /* smatch_constraints.c */ 1186*1f5207b7SJohn Levon char *get_constraint_str(struct expression *expr); 1187*1f5207b7SJohn Levon struct constraint_list *get_constraints(struct expression *expr); 1188*1f5207b7SJohn Levon char *unmet_constraint(struct expression *data, struct expression *offset); 1189*1f5207b7SJohn Levon char *get_required_constraint(const char *data_str); 1190*1f5207b7SJohn Levon 1191*1f5207b7SJohn Levon /* smatch_container_of.c */ 1192*1f5207b7SJohn Levon int get_param_from_container_of(struct expression *expr); 1193*1f5207b7SJohn Levon int get_offset_from_container_of(struct expression *expr); 1194*1f5207b7SJohn Levon 1195*1f5207b7SJohn Levon /* smatch_mtag.c */ 1196*1f5207b7SJohn Levon int get_string_mtag(struct expression *expr, mtag_t *tag); 1197*1f5207b7SJohn Levon int get_toplevel_mtag(struct symbol *sym, mtag_t *tag); 1198*1f5207b7SJohn Levon int get_mtag(struct expression *expr, mtag_t *tag); 1199*1f5207b7SJohn Levon int get_mtag_offset(struct expression *expr, mtag_t *tag, int *offset); 1200*1f5207b7SJohn Levon int create_mtag_alias(mtag_t tag, struct expression *expr, mtag_t *new); 1201*1f5207b7SJohn Levon int expr_to_mtag_offset(struct expression *expr, mtag_t *tag, int *offset); 1202*1f5207b7SJohn Levon void update_mtag_data(struct expression *expr); 1203*1f5207b7SJohn Levon int get_mtag_sval(struct expression *expr, sval_t *sval); 1204*1f5207b7SJohn Levon int get_mtag_addr_sval(struct expression *expr, sval_t *sval); 1205*1f5207b7SJohn Levon 1206*1f5207b7SJohn Levon /* Trinity fuzzer stuff */ 1207*1f5207b7SJohn Levon const char *get_syscall_arg_type(struct symbol *sym); 1208*1f5207b7SJohn Levon 1209*1f5207b7SJohn Levon /* smatch_mem_tracker.c */ 1210*1f5207b7SJohn Levon extern int option_mem; 1211*1f5207b7SJohn Levon unsigned long get_max_memory(void); 1212*1f5207b7SJohn Levon 1213*1f5207b7SJohn Levon /* check_is_nospec.c */ 1214*1f5207b7SJohn Levon bool is_nospec(struct expression *expr); 1215*1f5207b7SJohn Levon 1216*1f5207b7SJohn Levon /* smatch_nul_terminator.c */ 1217*1f5207b7SJohn Levon bool is_nul_terminated(struct expression *expr); 1218*1f5207b7SJohn Levon 1219*1f5207b7SJohn Levon static inline int type_bits(struct symbol *type) 1220*1f5207b7SJohn Levon { 1221*1f5207b7SJohn Levon if (!type) 1222*1f5207b7SJohn Levon return 0; 1223*1f5207b7SJohn Levon if (type->type == SYM_PTR) /* Sparse doesn't set this for &pointers */ 1224*1f5207b7SJohn Levon return bits_in_pointer; 1225*1f5207b7SJohn Levon if (type->type == SYM_ARRAY) 1226*1f5207b7SJohn Levon return bits_in_pointer; 1227*1f5207b7SJohn Levon if (!type->examined) 1228*1f5207b7SJohn Levon examine_symbol_type(type); 1229*1f5207b7SJohn Levon return type->bit_size; 1230*1f5207b7SJohn Levon } 1231*1f5207b7SJohn Levon 1232*1f5207b7SJohn Levon static inline bool type_is_ptr(struct symbol *type) 1233*1f5207b7SJohn Levon { 1234*1f5207b7SJohn Levon return type && (type->type == SYM_PTR || type->type == SYM_ARRAY); 1235*1f5207b7SJohn Levon } 1236*1f5207b7SJohn Levon 1237*1f5207b7SJohn Levon static inline int type_unsigned(struct symbol *base_type) 1238*1f5207b7SJohn Levon { 1239*1f5207b7SJohn Levon if (!base_type) 1240*1f5207b7SJohn Levon return 0; 1241*1f5207b7SJohn Levon if (base_type->ctype.modifiers & MOD_UNSIGNED) 1242*1f5207b7SJohn Levon return 1; 1243*1f5207b7SJohn Levon return 0; 1244*1f5207b7SJohn Levon } 1245*1f5207b7SJohn Levon 1246*1f5207b7SJohn Levon static inline int type_positive_bits(struct symbol *type) 1247*1f5207b7SJohn Levon { 1248*1f5207b7SJohn Levon if (!type) 1249*1f5207b7SJohn Levon return 0; 1250*1f5207b7SJohn Levon if (type->type == SYM_ARRAY) 1251*1f5207b7SJohn Levon return bits_in_pointer - 1; 1252*1f5207b7SJohn Levon if (type_unsigned(type)) 1253*1f5207b7SJohn Levon return type_bits(type); 1254*1f5207b7SJohn Levon return type_bits(type) - 1; 1255*1f5207b7SJohn Levon } 1256*1f5207b7SJohn Levon 1257*1f5207b7SJohn Levon static inline int sval_positive_bits(sval_t sval) 1258*1f5207b7SJohn Levon { 1259*1f5207b7SJohn Levon return type_positive_bits(sval.type); 1260*1f5207b7SJohn Levon } 1261*1f5207b7SJohn Levon 1262*1f5207b7SJohn Levon /* 1263*1f5207b7SJohn Levon * Returns -1 if one is smaller, 0 if they are the same and 1 if two is larger. 1264*1f5207b7SJohn Levon */ 1265*1f5207b7SJohn Levon static inline int sval_cmp(sval_t one, sval_t two) 1266*1f5207b7SJohn Levon { 1267*1f5207b7SJohn Levon struct symbol *type; 1268*1f5207b7SJohn Levon 1269*1f5207b7SJohn Levon type = one.type; 1270*1f5207b7SJohn Levon if (sval_positive_bits(two) > sval_positive_bits(one)) 1271*1f5207b7SJohn Levon type = two.type; 1272*1f5207b7SJohn Levon if (type_bits(type) < 31) 1273*1f5207b7SJohn Levon type = &int_ctype; 1274*1f5207b7SJohn Levon 1275*1f5207b7SJohn Levon one = sval_cast(type, one); 1276*1f5207b7SJohn Levon two = sval_cast(type, two); 1277*1f5207b7SJohn Levon 1278*1f5207b7SJohn Levon if (type_unsigned(type)) { 1279*1f5207b7SJohn Levon if (one.uvalue < two.uvalue) 1280*1f5207b7SJohn Levon return -1; 1281*1f5207b7SJohn Levon if (one.uvalue == two.uvalue) 1282*1f5207b7SJohn Levon return 0; 1283*1f5207b7SJohn Levon return 1; 1284*1f5207b7SJohn Levon } 1285*1f5207b7SJohn Levon /* fix me handle type promotion and unsigned values */ 1286*1f5207b7SJohn Levon if (one.value < two.value) 1287*1f5207b7SJohn Levon return -1; 1288*1f5207b7SJohn Levon if (one.value == two.value) 1289*1f5207b7SJohn Levon return 0; 1290*1f5207b7SJohn Levon return 1; 1291*1f5207b7SJohn Levon } 1292*1f5207b7SJohn Levon 1293*1f5207b7SJohn Levon #endif /* !SMATCH_H_ */ 1294