1 /* Copyright (c) 2008-2012 Da SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
11 #include "../surf/surf_private.h"
12 #include "../simix/smx_private.h"
13 #include "../xbt/mmalloc/mmprivate.h"
15 #include "mc_private.h"
16 #include "xbt/automaton.h"
18 XBT_LOG_NEW_CATEGORY(mc, "All MC categories");
19 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_global, mc,
20 "Logging specific to MC (global)");
22 /* Configuration support */
23 e_mc_reduce_t mc_reduce_kind=e_mc_reduce_unset;
25 extern int _surf_init_status;
26 void _mc_cfg_cb_reduce(const char *name, int pos) {
27 if (_surf_init_status && !_surf_do_model_check) {
28 xbt_die("You are specifying a reduction strategy after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry.");
30 char *val= xbt_cfg_get_string(_surf_cfg_set, name);
31 if (!strcasecmp(val,"none")) {
32 mc_reduce_kind = e_mc_reduce_none;
33 } else if (!strcasecmp(val,"dpor")) {
34 mc_reduce_kind = e_mc_reduce_dpor;
36 xbt_die("configuration option %s can only take 'none' or 'dpor' as a value",name);
38 xbt_cfg_set_int(_surf_cfg_set,"model-check",1);
41 void _mc_cfg_cb_checkpoint(const char *name, int pos) {
42 if (_surf_init_status && !_surf_do_model_check) {
43 xbt_die("You are specifying a checkpointing value after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry.");
45 _surf_mc_checkpoint = xbt_cfg_get_int(_surf_cfg_set, name);
46 xbt_cfg_set_int(_surf_cfg_set,"model-check",1);
48 void _mc_cfg_cb_property(const char *name, int pos) {
49 if (_surf_init_status && !_surf_do_model_check) {
50 xbt_die("You are specifying a property after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry.");
52 _surf_mc_property_file= xbt_cfg_get_string(_surf_cfg_set, name);
53 xbt_cfg_set_int(_surf_cfg_set,"model-check",1);
57 /* MC global data structures */
59 mc_state_t mc_current_state = NULL;
60 char mc_replay_mode = FALSE;
61 double *mc_time = NULL;
62 mc_snapshot_t initial_snapshot = NULL;
67 xbt_fifo_t mc_stack_safety = NULL;
68 mc_stats_t mc_stats = NULL;
72 mc_stats_pair_t mc_stats_pair = NULL;
73 xbt_fifo_t mc_stack_liveness = NULL;
74 mc_snapshot_t initial_snapshot_liveness = NULL;
76 xbt_dynar_t mc_binary_local_variables = NULL;
78 extern xbt_dynar_t mmalloc_ignore;
79 extern xbt_dynar_t stacks_areas;
81 xbt_automaton_t _mc_property_automaton = NULL;
83 static void MC_assert_pair(int prop);
85 void MC_do_the_modelcheck_for_real() {
86 if (!_surf_mc_property_file || _surf_mc_property_file[0]=='\0') {
87 if (mc_reduce_kind==e_mc_reduce_unset)
88 mc_reduce_kind=e_mc_reduce_dpor;
90 XBT_INFO("Check a safety property");
95 if (mc_reduce_kind==e_mc_reduce_unset)
96 mc_reduce_kind=e_mc_reduce_none;
98 XBT_INFO("Check the liveness property %s",_surf_mc_property_file);
99 MC_automaton_load(_surf_mc_property_file);
100 MC_modelcheck_liveness();
105 * \brief Initialize the model-checker data structures
107 void MC_init_safety(void)
110 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
112 /* Check if MC is already initialized */
113 if (initial_snapshot)
116 mc_time = xbt_new0(double, simix_process_maxpid);
118 /* Initialize the data structures that must be persistent across every
119 iteration of the model-checker (in RAW memory) */
123 /* Initialize statistics */
124 mc_stats = xbt_new0(s_mc_stats_t, 1);
125 mc_stats->state_size = 1;
127 /* Create exploration stack */
128 mc_stack_safety = xbt_fifo_new();
135 /* Save the initial state */
136 initial_snapshot = xbt_new0(s_mc_snapshot_t, 1);
137 MC_take_snapshot(initial_snapshot);
148 void MC_compare(void){
153 void MC_modelcheck(void)
160 void MC_modelcheck_liveness(){
162 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
165 XBT_DEBUG("Start init mc");
167 mc_time = xbt_new0(double, simix_process_maxpid);
169 /* mc_time refers to clock for each process -> ignore it for heap comparison */
171 for(i = 0; i<simix_process_maxpid; i++)
172 MC_ignore(&(mc_time[i]), sizeof(double));
176 /* Initialize the data structures that must be persistent across every
177 iteration of the model-checker (in RAW memory) */
181 mc_binary_local_variables = xbt_dynar_new(sizeof(dw_frame_t), NULL);
183 /* Initialize statistics */
184 mc_stats_pair = xbt_new0(s_mc_stats_pair_t, 1);
186 XBT_DEBUG("Creating stack");
188 /* Create exploration stack */
189 mc_stack_liveness = xbt_fifo_new();
193 /* Get local variables in binary for state equality detection */
194 MC_get_binary_local_variables();
199 MC_print_statistics_pairs(mc_stats_pair);
208 MC_print_statistics(mc_stats);
214 int MC_random(int min, int max)
216 /*FIXME: return mc_current_state->executed_transition->random.value;*/
221 * \brief Schedules all the process that are ready to run
223 void MC_wait_for_requests(void)
225 smx_process_t process;
229 while (!xbt_dynar_is_empty(simix_global->process_to_run)) {
230 SIMIX_process_runall();
231 xbt_dynar_foreach(simix_global->process_that_ran, iter, process) {
232 req = &process->simcall;
233 if (req->call != SIMCALL_NONE && !MC_request_is_visible(req))
234 SIMIX_simcall_pre(req, 0);
239 int MC_deadlock_check()
241 int deadlock = FALSE;
242 smx_process_t process;
243 if(xbt_swag_size(simix_global->process_list)){
245 xbt_swag_foreach(process, simix_global->process_list){
246 if(process->simcall.call != SIMCALL_NONE
247 && MC_request_is_enabled(&process->simcall)){
257 * \brief Re-executes from the state at position start all the transitions indicated by
258 * a given model-checker stack.
259 * \param stack The stack with the transitions to execute.
260 * \param start Start index to begin the re-execution.
262 void MC_replay(xbt_fifo_t stack, int start)
264 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
268 smx_simcall_t req = NULL, saved_req = NULL;
269 xbt_fifo_item_t item, start_item;
272 XBT_DEBUG("**** Begin Replay ****");
275 /* Restore the initial state */
276 MC_restore_snapshot(initial_snapshot);
277 /* At the moment of taking the snapshot the raw heap was set, so restoring
278 * it will set it back again, we have to unset it to continue */
282 start_item = xbt_fifo_get_last_item(stack);
285 start_item = xbt_fifo_get_prev_item(start_item);
290 /* Traverse the stack from the state at position start and re-execute the transitions */
291 for (item = start_item;
292 item != xbt_fifo_get_first_item(stack);
293 item = xbt_fifo_get_prev_item(item)) {
295 state = (mc_state_t) xbt_fifo_get_item_content(item);
296 saved_req = MC_state_get_executed_request(state, &value);
299 /* because we got a copy of the executed request, we have to fetch the
300 real one, pointed by the request field of the issuer process */
301 req = &saved_req->issuer->simcall;
303 /* Debug information */
304 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
305 req_str = MC_request_to_string(req, value);
306 XBT_DEBUG("Replay: %s (%p)", req_str, state);
311 SIMIX_simcall_pre(req, value);
312 MC_wait_for_requests();
314 /* Update statistics */
315 mc_stats->visited_states++;
316 mc_stats->executed_transitions++;
318 XBT_DEBUG("**** End Replay ****");
328 void MC_replay_liveness(xbt_fifo_t stack, int all_stack)
331 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
335 smx_simcall_t req = NULL, saved_req = NULL;
336 xbt_fifo_item_t item;
338 mc_pair_stateless_t pair;
341 XBT_DEBUG("**** Begin Replay ****");
343 /* Restore the initial state */
344 MC_restore_snapshot(initial_snapshot_liveness);
345 /* At the moment of taking the snapshot the raw heap was set, so restoring
346 * it will set it back again, we have to unset it to continue */
351 item = xbt_fifo_get_last_item(stack);
353 while(depth <= xbt_fifo_size(stack)){
355 pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item);
356 state = (mc_state_t) pair->graph_state;
358 if(pair->requests > 0){
360 saved_req = MC_state_get_executed_request(state, &value);
361 //XBT_DEBUG("SavedReq->call %u", saved_req->call);
363 if(saved_req != NULL){
364 /* because we got a copy of the executed request, we have to fetch the
365 real one, pointed by the request field of the issuer process */
366 req = &saved_req->issuer->simcall;
367 //XBT_DEBUG("Req->call %u", req->call);
369 /* Debug information */
370 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
371 req_str = MC_request_to_string(req, value);
372 XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
378 SIMIX_simcall_pre(req, value);
379 MC_wait_for_requests();
384 /* Update statistics */
385 mc_stats_pair->visited_pairs++;
387 item = xbt_fifo_get_prev_item(item);
392 /* Traverse the stack from the initial state and re-execute the transitions */
393 for (item = xbt_fifo_get_last_item(stack);
394 item != xbt_fifo_get_first_item(stack);
395 item = xbt_fifo_get_prev_item(item)) {
397 pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item);
398 state = (mc_state_t) pair->graph_state;
400 if(pair->requests > 0){
402 saved_req = MC_state_get_executed_request(state, &value);
403 //XBT_DEBUG("SavedReq->call %u", saved_req->call);
405 if(saved_req != NULL){
406 /* because we got a copy of the executed request, we have to fetch the
407 real one, pointed by the request field of the issuer process */
408 req = &saved_req->issuer->simcall;
409 //XBT_DEBUG("Req->call %u", req->call);
411 /* Debug information */
412 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
413 req_str = MC_request_to_string(req, value);
414 XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
420 SIMIX_simcall_pre(req, value);
421 MC_wait_for_requests();
426 /* Update statistics */
427 mc_stats_pair->visited_pairs++;
431 XBT_DEBUG("**** End Replay ****");
441 * \brief Dumps the contents of a model-checker's stack and shows the actual
443 * \param stack The stack to dump
445 void MC_dump_stack_safety(xbt_fifo_t stack)
448 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
450 MC_show_stack_safety(stack);
452 if(!_surf_mc_checkpoint){
457 while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL)
458 MC_state_delete(state);
471 void MC_show_stack_safety(xbt_fifo_t stack)
475 xbt_fifo_item_t item;
477 char *req_str = NULL;
479 for (item = xbt_fifo_get_last_item(stack);
480 (item ? (state = (mc_state_t) (xbt_fifo_get_item_content(item)))
481 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
482 req = MC_state_get_executed_request(state, &value);
484 req_str = MC_request_to_string(req, value);
485 XBT_INFO("%s", req_str);
491 void MC_show_deadlock(smx_simcall_t req)
493 /*char *req_str = NULL;*/
494 XBT_INFO("**************************");
495 XBT_INFO("*** DEAD-LOCK DETECTED ***");
496 XBT_INFO("**************************");
497 XBT_INFO("Locked request:");
498 /*req_str = MC_request_to_string(req);
499 XBT_INFO("%s", req_str);
501 XBT_INFO("Counter-example execution trace:");
502 MC_dump_stack_safety(mc_stack_safety);
506 void MC_show_stack_liveness(xbt_fifo_t stack){
508 mc_pair_stateless_t pair;
509 xbt_fifo_item_t item;
511 char *req_str = NULL;
513 for (item = xbt_fifo_get_last_item(stack);
514 (item ? (pair = (mc_pair_stateless_t) (xbt_fifo_get_item_content(item)))
515 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
516 req = MC_state_get_executed_request(pair->graph_state, &value);
518 if(pair->requests>0){
519 req_str = MC_request_to_string(req, value);
520 XBT_INFO("%s", req_str);
523 XBT_INFO("End of system requests but evolution in Büchi automaton");
529 void MC_dump_stack_liveness(xbt_fifo_t stack){
531 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
533 mc_pair_stateless_t pair;
536 while ((pair = (mc_pair_stateless_t) xbt_fifo_pop(stack)) != NULL)
537 MC_pair_stateless_delete(pair);
548 void MC_print_statistics(mc_stats_t stats)
550 //XBT_INFO("State space size ~= %lu", stats->state_size);
551 XBT_INFO("Expanded states = %lu", stats->expanded_states);
552 XBT_INFO("Visited states = %lu", stats->visited_states);
553 XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
554 XBT_INFO("Expanded / Visited = %lf",
555 (double) stats->visited_states / stats->expanded_states);
556 /*XBT_INFO("Exploration coverage = %lf",
557 (double)stats->expanded_states / stats->state_size); */
560 void MC_print_statistics_pairs(mc_stats_pair_t stats)
562 XBT_INFO("Expanded pairs = %lu", stats->expanded_pairs);
563 XBT_INFO("Visited pairs = %lu", stats->visited_pairs);
564 //XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
565 XBT_INFO("Expanded / Visited = %lf",
566 (double) stats->visited_pairs / stats->expanded_pairs);
567 /*XBT_INFO("Exploration coverage = %lf",
568 (double)stats->expanded_states / stats->state_size); */
571 void MC_assert(int prop)
573 if (MC_IS_ENABLED && !prop){
574 XBT_INFO("**************************");
575 XBT_INFO("*** PROPERTY NOT VALID ***");
576 XBT_INFO("**************************");
577 XBT_INFO("Counter-example execution trace:");
578 MC_dump_stack_safety(mc_stack_safety);
579 MC_print_statistics(mc_stats);
584 static void MC_assert_pair(int prop){
585 if (MC_IS_ENABLED && !prop) {
586 XBT_INFO("**************************");
587 XBT_INFO("*** PROPERTY NOT VALID ***");
588 XBT_INFO("**************************");
589 //XBT_INFO("Counter-example execution trace:");
590 MC_show_stack_liveness(mc_stack_liveness);
591 //MC_dump_snapshot_stack(mc_snapshot_stack);
592 MC_print_statistics_pairs(mc_stats_pair);
597 void MC_process_clock_add(smx_process_t process, double amount)
599 mc_time[process->pid] += amount;
602 double MC_process_clock_get(smx_process_t process)
605 return mc_time[process->pid];
610 void MC_automaton_load(const char *file){
612 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
616 if (_mc_property_automaton == NULL)
617 _mc_property_automaton = xbt_automaton_new();
619 xbt_automaton_load(_mc_property_automaton,file);
630 void MC_automaton_new_propositional_symbol(const char* id, void* fct) {
632 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
636 if (_mc_property_automaton == NULL)
637 _mc_property_automaton = xbt_automaton_new();
639 xbt_new_propositional_symbol(_mc_property_automaton,id,fct);
650 /************ MC_ignore ***********/
652 void MC_ignore_init(){
654 mmalloc_ignore = xbt_dynar_new(sizeof(mc_ignore_region_t), NULL);
655 stacks_areas = xbt_dynar_new(sizeof(stack_region_t), NULL);
659 void MC_ignore(void *address, size_t size){
663 mc_ignore_region_t region = NULL;
664 region = xbt_new0(s_mc_ignore_region_t, 1);
665 region->address = address;
667 region->block = ((char*)address - (char*)((xbt_mheap_t)std_heap)->heapbase) / BLOCKSIZE + 1;
669 if(((xbt_mheap_t)std_heap)->heapinfo[region->block].type == 0){
670 region->fragment = -1;
672 region->fragment = ((uintptr_t) (ADDR2UINT (address) % (BLOCKSIZE))) >> ((xbt_mheap_t)std_heap)->heapinfo[region->block].type;
675 unsigned int cursor = 0;
676 mc_ignore_region_t current_region;
677 xbt_dynar_foreach(mmalloc_ignore, cursor, current_region){
678 if(current_region->address > address)
682 xbt_dynar_insert_at(mmalloc_ignore, cursor, ®ion);
687 void MC_new_stack_area(void *stack, char *name){
689 stack_region_t region = NULL;
690 region = xbt_new0(s_stack_region_t, 1);
691 region->address = stack;
692 region->process_name = strdup(name);
693 xbt_dynar_push(stacks_areas, ®ion);
697 /************ DWARF ***********/
699 static e_dw_location_type get_location(char *expr, dw_location_t entry);
701 void MC_get_binary_local_variables(){
703 char *command = bprintf("dwarfdump -i %s", xbt_binary_name);
705 FILE* fp = popen(command, "r");
708 perror("popen failed");
710 char *line = NULL, *tmp_line = NULL, *tmp_location = NULL, *frame_name = NULL;
713 int valid_variable = 1, valid_frame = 1;
714 char *node_type = NULL, *location_type = NULL, *variable_name = NULL, *lowpc = NULL, *highpc = NULL;
715 xbt_dynar_t split = NULL;
717 void *low_pc = NULL, *old_low_pc = NULL;
719 int compile_unit_found = 0; /* Detect if the program has been compiled with -g */
721 read = getline(&line, &n, fp);
728 /* Wipeout the new line character */
729 line[read - 1] = '\0';
733 /* If the program hasn't been compiled with -g, no symbol (line starting with '<' ) found */
734 compile_unit_found = 1;
739 node_type = strtok(NULL, " ");
741 if(strcmp(node_type, "DW_TAG_subprogram") == 0){ /* New frame */
743 read = getline(&line, &n, fp);
745 while(read != -1 && line[0] != '<'){
750 node_type = strtok(line, " ");
752 if(node_type != NULL && strcmp(node_type, "DW_AT_name") == 0){
754 frame_name = strdup(strtok(NULL, " "));
755 xbt_str_trim(frame_name, NULL);
756 xbt_str_trim(frame_name, "\"");
757 read = getline(&line, &n, fp);
759 }else if(node_type != NULL && strcmp(node_type, "DW_AT_frame_base") == 0){
761 if(valid_frame == 1){
763 dw_frame_t frame = xbt_new0(s_dw_frame_t, 1);
764 frame->name = strdup(frame_name);
765 frame->variables = xbt_dynar_new(sizeof(dw_local_variable_t), NULL);
766 frame->location = xbt_new0(s_dw_location_t, 1);
768 location_type = strtok(NULL, " ");
770 if(strcmp(location_type, "<loclist") == 0){
772 frame->location->type = e_dw_loclist;
773 frame->location->location.loclist = xbt_dynar_new(sizeof(dw_location_entry_t), NULL);
775 read = getline(&line, &n, fp);
776 xbt_str_ltrim(line, NULL);
778 while(read != -1 && line[0] == '['){
781 lowpc = strdup(strtok(NULL, "<"));
782 highpc = strdup(strtok(NULL, ">"));
783 tmp_location = strdup(strtok(NULL, ">"));
784 lowpc[strlen(lowpc) - 1] = '\0'; /* Remove last character '>' */
786 dw_location_entry_t new_entry = xbt_new0(s_dw_location_entry_t, 1);
790 new_entry->lowpc = (void *) strtoul(strtok(NULL, "="), NULL, 16);
792 new_entry->highpc = (void *) strtoul(strtok(NULL, "="), NULL, 16);
795 old_low_pc = (void *)strtoul(strtok(NULL, "="), NULL, 16);
796 new_entry->lowpc = (char *)low_pc + (long)old_low_pc;
798 new_entry->highpc = (char*)low_pc + ((char *)((void *)strtoul(strtok(NULL, "="), NULL, 16)) - (char*)old_low_pc);
801 new_entry->location = xbt_new0(s_dw_location_t, 1);
803 get_location(tmp_location, new_entry->location);
805 xbt_dynar_push(frame->location->location.loclist, &new_entry);
807 read = getline(&line, &n, fp);
808 xbt_str_ltrim(line, NULL);
812 read = getline(&line, &n, fp);
813 frame->location->type = get_location(location_type, frame->location);
817 xbt_dynar_push(mc_binary_local_variables, &frame);
821 read = getline(&line, &n, fp);
825 }else if(node_type != NULL && (strcmp(node_type, "DW_AT_declaration") == 0 || strcmp(node_type, "DW_AT_abstract_origin") == 0 || strcmp(node_type, "DW_AT_artificial") == 0)){
827 read = getline(&line, &n, fp);
832 read = getline(&line, &n, fp);
840 }else if(strcmp(node_type, "DW_TAG_variable") == 0){ /* New variable */
842 variable_name = NULL;
843 location_type = NULL;
845 read = getline(&line, &n, fp);
847 while(read != -1 && line[0] != '<'){
852 tmp_line = strdup(line);
854 node_type = strtok(line, " ");
856 if(node_type != NULL && strcmp(node_type, "DW_AT_name") == 0){
858 variable_name = strdup(strtok(NULL, " "));
859 xbt_str_trim(variable_name, NULL);
860 xbt_str_trim(variable_name, "\"");
861 read = getline(&line, &n, fp);
863 }else if(node_type != NULL && strcmp(node_type, "DW_AT_location") == 0){
865 if(valid_variable == 1){
867 location_type = strdup(strtok(NULL, " "));
869 dw_local_variable_t variable = xbt_new0(s_dw_local_variable_t, 1);
870 variable->name = strdup(variable_name);
871 variable->location = xbt_new0(s_dw_location_t, 1);
873 if(strcmp(location_type, "<loclist") == 0){
875 variable->location->type = e_dw_loclist;
876 variable->location->location.loclist = xbt_dynar_new(sizeof(dw_location_entry_t), NULL);
878 read = getline(&line, &n, fp);
879 xbt_str_ltrim(line, NULL);
881 while(read != -1 && line[0] == '['){
884 lowpc = strdup(strtok(NULL, "<"));
885 highpc = strdup(strtok(NULL, ">"));
886 tmp_location = strdup(strtok(NULL, ">"));
887 lowpc[strlen(lowpc) - 1] = '\0'; /* Remove last character '>' */
889 dw_location_entry_t new_entry = xbt_new0(s_dw_location_entry_t, 1);
893 new_entry->lowpc = (void *) strtoul(strtok(NULL, "="), NULL, 16);
895 new_entry->highpc = (void *) strtoul(strtok(NULL, "="), NULL, 16);
898 old_low_pc = (void *)strtoul(strtok(NULL, "="), NULL, 16);
899 new_entry->lowpc = (char *)low_pc + (long)old_low_pc;
901 new_entry->highpc = (char*)low_pc + ((char *)((void *)strtoul(strtok(NULL, "="), NULL, 16)) - (char*)old_low_pc);
904 new_entry->location = xbt_new0(s_dw_location_t, 1);
906 get_location(tmp_location, new_entry->location);
908 xbt_dynar_push(variable->location->location.loclist, &new_entry);
910 read = getline(&line, &n, fp);
911 xbt_str_ltrim(line, NULL);
916 xbt_str_strip_spaces(tmp_line);
917 split = xbt_str_split(tmp_line, " ");
918 xbt_dynar_remove_at(split, 0, NULL);
919 location_type = xbt_str_join(split, " ");
921 variable->location->type = get_location(location_type, variable->location);
922 read = getline(&line, &n, fp);
926 xbt_dynar_push(((dw_frame_t)xbt_dynar_get_as(mc_binary_local_variables, xbt_dynar_length(mc_binary_local_variables) - 1, dw_frame_t))->variables, &variable);
930 read = getline(&line, &n, fp);
934 }else if(node_type != NULL && (strcmp(node_type, "DW_AT_artificial") == 0 || strcmp(node_type, "DW_AT_external") == 0)){
937 read = getline(&line, &n, fp);
941 read = getline(&line, &n, fp);
949 }else if(strcmp(node_type, "DW_TAG_compile_unit") == 0){
951 read = getline(&line, &n, fp);
953 while(read != -1 && line[0] != '<'){
958 node_type = strtok(line, " ");
960 if(node_type != NULL && strcmp(node_type, "DW_AT_low_pc") == 0){
961 low_pc = (void *) strtoul(strtok(NULL, " "), NULL, 16);
964 read = getline(&line, &n, fp);
970 read = getline(&line, &n, fp);
976 read = getline(&line, &n, fp);
982 if(compile_unit_found == 0){
983 XBT_INFO("Your program must be compiled with -g");
987 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug))
988 print_local_variables(mc_binary_local_variables);
990 free(line); free(tmp_line); free(tmp_location); free(frame_name);
991 free(node_type); free(location_type); free(variable_name); free(lowpc); free(highpc);
996 void print_local_variables(xbt_dynar_t list){
999 dw_local_variable_t variable;
1000 dw_location_entry_t entry;
1001 dw_location_t location_entry;
1002 unsigned int cursor = 0, cursor2 = 0, cursor3 = 0, cursor4 = 0;
1004 xbt_dynar_foreach(list, cursor, frame){
1005 fprintf(stderr, "Frame name : %s", frame->name);
1006 fprintf(stderr, "Location type : %d\n", frame->location->type);
1007 fprintf(stderr, "Variables : (%lu)\n", xbt_dynar_length(frame->variables));
1008 xbt_dynar_foreach(frame->variables, cursor2, variable){
1009 fprintf(stderr, "Name : %s", variable->name);
1010 fprintf(stderr, "Location type : %d\n", variable->location->type);
1011 switch(variable->location->type){
1013 xbt_dynar_foreach(variable->location->location.loclist, cursor3, entry){
1014 fprintf(stderr, "Lowpc : %p, Highpc : %p,", entry->lowpc, entry->highpc);
1015 switch(entry->location->type){
1016 case e_dw_register :
1017 fprintf(stderr, " Location : in register %d\n", entry->location->location.reg);
1019 case e_dw_bregister_op:
1020 fprintf(stderr, " Location : Add %d to the value in register %d\n", entry->location->location.breg_op.offset, entry->location->location.breg_op.reg);
1023 fprintf(stderr, "Value already kwnown : %d\n", entry->location->location.lit);
1025 case e_dw_fbregister_op:
1026 fprintf(stderr, " Location : %d bytes from logical frame pointer\n", entry->location->location.fbreg_op);
1029 fprintf(stderr, " Location :\n");
1030 xbt_dynar_foreach(entry->location->location.compose, cursor4, location_entry){
1031 switch(location_entry->type){
1032 case e_dw_register :
1033 fprintf(stderr, " %d) in register %d\n", cursor4 + 1, location_entry->location.reg);
1035 case e_dw_bregister_op:
1036 fprintf(stderr, " %d) add %d to the value in register %d\n", cursor4 + 1, location_entry->location.breg_op.offset, location_entry->location.breg_op.reg);
1039 fprintf(stderr, "%d) Value already kwnown : %d\n", cursor4 + 1, location_entry->location.lit);
1041 case e_dw_fbregister_op:
1042 fprintf(stderr, " %d) %d bytes from logical frame pointer\n", cursor4 + 1, location_entry->location.fbreg_op);
1045 fprintf(stderr, " %d) Pop the stack entry and treats it as an address (size of data %d)\n", cursor4 + 1, location_entry->location.deref_size);
1047 case e_dw_arithmetic :
1048 fprintf(stderr, "%d) arithmetic operation : %s\n", cursor4 + 1, location_entry->location.arithmetic);
1051 fprintf(stderr, "%d) The %d byte(s) previous value\n", cursor4 + 1, location_entry->location.piece);
1053 case e_dw_constant :
1054 fprintf(stderr, "%d) Constant %d\n", cursor4 + 1, location_entry->location.constant.value);
1057 fprintf(stderr, "%d) Location type not supported\n", cursor4 + 1);
1063 fprintf(stderr, "Location type not supported\n");
1070 fprintf(stderr, "Location :\n");
1071 xbt_dynar_foreach(variable->location->location.compose, cursor4, location_entry){
1072 switch(location_entry->type){
1073 case e_dw_register :
1074 fprintf(stderr, " %d) in register %d\n", cursor4 + 1, location_entry->location.reg);
1076 case e_dw_bregister_op:
1077 fprintf(stderr, " %d) add %d to the value in register %d\n", cursor4 + 1, location_entry->location.breg_op.offset, location_entry->location.breg_op.reg);
1080 fprintf(stderr, "%d) Value already kwnown : %d\n", cursor4 + 1, location_entry->location.lit);
1082 case e_dw_fbregister_op:
1083 fprintf(stderr, " %d) %d bytes from logical frame pointer\n", cursor4 + 1, location_entry->location.fbreg_op);
1086 fprintf(stderr, " %d) Pop the stack entry and treats it as an address (size of data %d)\n", cursor4 + 1, location_entry->location.deref_size);
1088 case e_dw_arithmetic :
1089 fprintf(stderr, "%d) arithmetic operation : %s\n", cursor4 + 1, location_entry->location.arithmetic);
1092 fprintf(stderr, "%d) The %d byte(s) previous value\n", cursor4 + 1, location_entry->location.piece);
1094 case e_dw_constant :
1095 fprintf(stderr, "%d) Constant %d\n", cursor4 + 1, location_entry->location.constant.value);
1098 fprintf(stderr, "%d) Location type not supported\n", cursor4 + 1);
1104 fprintf(stderr, "Location type not supported\n");
1112 static e_dw_location_type get_location(char *expr, dw_location_t entry){
1115 char *tok = NULL, *tmp_tok = NULL;
1117 xbt_dynar_t tokens = xbt_str_split(expr, NULL);
1118 xbt_dynar_remove_at(tokens, xbt_dynar_length(tokens) - 1, NULL);
1120 if(xbt_dynar_length(tokens) > 1){
1122 entry->type = e_dw_compose;
1123 entry->location.compose = xbt_dynar_new(sizeof(dw_location_t), NULL);
1125 while(cursor < xbt_dynar_length(tokens)){
1127 tok = xbt_dynar_get_as(tokens, cursor, char*);
1129 if(strncmp(tok, "DW_OP_reg", 9) == 0){
1130 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1131 new_element->type = e_dw_register;
1133 new_element->location.reg = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1135 new_element->location.reg = atoi(strtok(tok, "DW_OP_reg"));
1137 xbt_dynar_push(entry->location.compose, &new_element);
1138 }else if(strcmp(tok, "DW_OP_fbreg") == 0){
1139 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1140 new_element->type = e_dw_fbregister_op;
1141 new_element->location.fbreg_op = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1142 xbt_dynar_push(entry->location.compose, &new_element);
1143 }else if(strncmp(tok, "DW_OP_breg", 10) == 0){
1144 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1145 new_element->type = e_dw_bregister_op;
1147 new_element->location.breg_op.reg = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1148 new_element->location.breg_op.offset = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1150 if(strchr(tok,'+') != NULL){
1151 tmp_tok = strtok(tok,"DW_OP_breg");
1152 new_element->location.breg_op.reg = atoi(strtok(tmp_tok,"+"));
1153 new_element->location.breg_op.offset = atoi(strtok(NULL,"+"));
1155 new_element->location.breg_op.reg = atoi(strtok(tok, "DW_OP_breg"));
1156 new_element->location.breg_op.offset = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1159 xbt_dynar_push(entry->location.compose, &new_element);
1160 }else if(strncmp(tok, "DW_OP_lit", 9) == 0){
1161 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1162 new_element->type = e_dw_lit;
1163 new_element->location.lit = atoi(strtok(tok, "DW_OP_lit"));
1164 xbt_dynar_push(entry->location.compose, &new_element);
1165 }else if(strcmp(tok, "DW_OP_piece") == 0){
1166 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1167 new_element->type = e_dw_piece;
1168 if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
1169 new_element->location.piece = atoi(xbt_dynar_get_as(tokens, cursor, char*));
1171 new_element->location.piece = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';
1172 xbt_dynar_push(entry->location.compose, &new_element);
1174 }else if(strcmp(tok, "DW_OP_abs") == 0 ||
1175 strcmp(tok, "DW_OP_and") == 0 ||
1176 strcmp(tok, "DW_OP_div") == 0 ||
1177 strcmp(tok, "DW_OP_minus") == 0 ||
1178 strcmp(tok, "DW_OP_mod") == 0 ||
1179 strcmp(tok, "DW_OP_mul") == 0 ||
1180 strcmp(tok, "DW_OP_neg") == 0 ||
1181 strcmp(tok, "DW_OP_not") == 0 ||
1182 strcmp(tok, "DW_OP_or") == 0 ||
1183 strcmp(tok, "DW_OP_plus") == 0 ||
1184 strcmp(tok, "DW_OP_plus_uconst") == 0){
1185 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1186 new_element->type = e_dw_arithmetic;
1187 new_element->location.arithmetic = strdup(strtok(tok, "DW_OP_"));
1188 xbt_dynar_push(entry->location.compose, &new_element);
1189 }else if(strcmp(tok, "DW_OP_stack_value") == 0){
1191 }else if(strcmp(tok, "DW_OP_deref_size") == 0){
1192 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1193 new_element->type = e_dw_deref;
1194 if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
1195 new_element->location.deref_size = atoi(xbt_dynar_get_as(tokens, cursor, char*));
1197 new_element->location.deref_size = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';
1198 xbt_dynar_push(entry->location.compose, &new_element);
1199 }else if(strcmp(tok, "DW_OP_deref") == 0){
1200 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1201 new_element->type = e_dw_deref;
1202 new_element->location.deref_size = sizeof(void *);
1203 xbt_dynar_push(entry->location.compose, &new_element);
1204 }else if(strcmp(tok, "DW_OP_constu") == 0){
1205 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1206 new_element->type = e_dw_constant;
1207 new_element->location.constant.is_signed = 0;
1208 new_element->location.constant.bytes = 1;
1209 if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
1210 new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, cursor, char*));
1212 new_element->location.constant.value = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';
1213 xbt_dynar_push(entry->location.compose, &new_element);
1214 }else if(strcmp(tok, "DW_OP_consts") == 0){
1215 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1216 new_element->type = e_dw_constant;
1217 new_element->location.constant.is_signed = 1;
1218 new_element->location.constant.bytes = 1;
1219 new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1220 xbt_dynar_push(entry->location.compose, &new_element);
1221 }else if(strcmp(tok, "DW_OP_const1u") == 0 ||
1222 strcmp(tok, "DW_OP_const2u") == 0 ||
1223 strcmp(tok, "DW_OP_const4u") == 0 ||
1224 strcmp(tok, "DW_OP_const8u") == 0){
1225 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1226 new_element->type = e_dw_constant;
1227 new_element->location.constant.is_signed = 0;
1228 new_element->location.constant.bytes = tok[11] - '0';
1229 if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
1230 new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, cursor, char*));
1232 new_element->location.constant.value = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';
1233 xbt_dynar_push(entry->location.compose, &new_element);
1234 }else if(strcmp(tok, "DW_OP_const1s") == 0 ||
1235 strcmp(tok, "DW_OP_const2s") == 0 ||
1236 strcmp(tok, "DW_OP_const4s") == 0 ||
1237 strcmp(tok, "DW_OP_const8s") == 0){
1238 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1239 new_element->type = e_dw_constant;
1240 new_element->location.constant.is_signed = 1;
1241 new_element->location.constant.bytes = tok[11] - '0';
1242 new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1243 xbt_dynar_push(entry->location.compose, &new_element);
1245 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1246 new_element->type = e_dw_unsupported;
1247 xbt_dynar_push(entry->location.compose, &new_element);
1256 /*xbt_dynar_free(&tokens);*/
1258 return e_dw_compose;
1262 if(strncmp(expr, "DW_OP_reg", 9) == 0){
1263 entry->type = e_dw_register;
1264 entry->location.reg = atoi(strtok(expr,"DW_OP_reg"));
1265 }else if(strncmp(expr, "DW_OP_breg", 10) == 0){
1266 entry->type = e_dw_bregister_op;
1267 tok = strtok(expr, "+");
1268 entry->location.breg_op.offset = atoi(strtok(NULL, "+"));
1269 entry->location.breg_op.reg = atoi(strtok(tok, "DW_OP_breg"));
1271 entry->type = e_dw_unsupported;