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 /* Get local variables in binary for state equality detection */
182 MC_get_binary_local_variables();
184 /* Initialize statistics */
185 mc_stats_pair = xbt_new0(s_mc_stats_pair_t, 1);
187 XBT_DEBUG("Creating stack");
189 /* Create exploration stack */
190 mc_stack_liveness = xbt_fifo_new();
197 MC_print_statistics_pairs(mc_stats_pair);
206 MC_print_statistics(mc_stats);
212 int MC_random(int min, int max)
214 /*FIXME: return mc_current_state->executed_transition->random.value;*/
219 * \brief Schedules all the process that are ready to run
221 void MC_wait_for_requests(void)
223 smx_process_t process;
227 while (!xbt_dynar_is_empty(simix_global->process_to_run)) {
228 SIMIX_process_runall();
229 xbt_dynar_foreach(simix_global->process_that_ran, iter, process) {
230 req = &process->simcall;
231 if (req->call != SIMCALL_NONE && !MC_request_is_visible(req))
232 SIMIX_simcall_pre(req, 0);
237 int MC_deadlock_check()
239 int deadlock = FALSE;
240 smx_process_t process;
241 if(xbt_swag_size(simix_global->process_list)){
243 xbt_swag_foreach(process, simix_global->process_list){
244 if(process->simcall.call != SIMCALL_NONE
245 && MC_request_is_enabled(&process->simcall)){
255 * \brief Re-executes from the state at position start all the transitions indicated by
256 * a given model-checker stack.
257 * \param stack The stack with the transitions to execute.
258 * \param start Start index to begin the re-execution.
260 void MC_replay(xbt_fifo_t stack, int start)
262 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
266 smx_simcall_t req = NULL, saved_req = NULL;
267 xbt_fifo_item_t item, start_item;
270 XBT_DEBUG("**** Begin Replay ****");
273 /* Restore the initial state */
274 MC_restore_snapshot(initial_snapshot);
275 /* At the moment of taking the snapshot the raw heap was set, so restoring
276 * it will set it back again, we have to unset it to continue */
280 start_item = xbt_fifo_get_last_item(stack);
283 start_item = xbt_fifo_get_prev_item(start_item);
288 /* Traverse the stack from the state at position start and re-execute the transitions */
289 for (item = start_item;
290 item != xbt_fifo_get_first_item(stack);
291 item = xbt_fifo_get_prev_item(item)) {
293 state = (mc_state_t) xbt_fifo_get_item_content(item);
294 saved_req = MC_state_get_executed_request(state, &value);
297 /* because we got a copy of the executed request, we have to fetch the
298 real one, pointed by the request field of the issuer process */
299 req = &saved_req->issuer->simcall;
301 /* Debug information */
302 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
303 req_str = MC_request_to_string(req, value);
304 XBT_DEBUG("Replay: %s (%p)", req_str, state);
309 SIMIX_simcall_pre(req, value);
310 MC_wait_for_requests();
312 /* Update statistics */
313 mc_stats->visited_states++;
314 mc_stats->executed_transitions++;
316 XBT_DEBUG("**** End Replay ****");
326 void MC_replay_liveness(xbt_fifo_t stack, int all_stack)
329 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
333 smx_simcall_t req = NULL, saved_req = NULL;
334 xbt_fifo_item_t item;
336 mc_pair_stateless_t pair;
339 XBT_DEBUG("**** Begin Replay ****");
341 /* Restore the initial state */
342 MC_restore_snapshot(initial_snapshot_liveness);
343 /* At the moment of taking the snapshot the raw heap was set, so restoring
344 * it will set it back again, we have to unset it to continue */
349 item = xbt_fifo_get_last_item(stack);
351 while(depth <= xbt_fifo_size(stack)){
353 pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item);
354 state = (mc_state_t) pair->graph_state;
356 if(pair->requests > 0){
358 saved_req = MC_state_get_executed_request(state, &value);
359 //XBT_DEBUG("SavedReq->call %u", saved_req->call);
361 if(saved_req != NULL){
362 /* because we got a copy of the executed request, we have to fetch the
363 real one, pointed by the request field of the issuer process */
364 req = &saved_req->issuer->simcall;
365 //XBT_DEBUG("Req->call %u", req->call);
367 /* Debug information */
368 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
369 req_str = MC_request_to_string(req, value);
370 XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
376 SIMIX_simcall_pre(req, value);
377 MC_wait_for_requests();
382 /* Update statistics */
383 mc_stats_pair->visited_pairs++;
385 item = xbt_fifo_get_prev_item(item);
390 /* Traverse the stack from the initial state and re-execute the transitions */
391 for (item = xbt_fifo_get_last_item(stack);
392 item != xbt_fifo_get_first_item(stack);
393 item = xbt_fifo_get_prev_item(item)) {
395 pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item);
396 state = (mc_state_t) pair->graph_state;
398 if(pair->requests > 0){
400 saved_req = MC_state_get_executed_request(state, &value);
401 //XBT_DEBUG("SavedReq->call %u", saved_req->call);
403 if(saved_req != NULL){
404 /* because we got a copy of the executed request, we have to fetch the
405 real one, pointed by the request field of the issuer process */
406 req = &saved_req->issuer->simcall;
407 //XBT_DEBUG("Req->call %u", req->call);
409 /* Debug information */
410 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
411 req_str = MC_request_to_string(req, value);
412 XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
418 SIMIX_simcall_pre(req, value);
419 MC_wait_for_requests();
424 /* Update statistics */
425 mc_stats_pair->visited_pairs++;
429 XBT_DEBUG("**** End Replay ****");
439 * \brief Dumps the contents of a model-checker's stack and shows the actual
441 * \param stack The stack to dump
443 void MC_dump_stack_safety(xbt_fifo_t stack)
446 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
448 MC_show_stack_safety(stack);
450 if(!_surf_mc_checkpoint){
455 while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL)
456 MC_state_delete(state);
469 void MC_show_stack_safety(xbt_fifo_t stack)
473 xbt_fifo_item_t item;
475 char *req_str = NULL;
477 for (item = xbt_fifo_get_last_item(stack);
478 (item ? (state = (mc_state_t) (xbt_fifo_get_item_content(item)))
479 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
480 req = MC_state_get_executed_request(state, &value);
482 req_str = MC_request_to_string(req, value);
483 XBT_INFO("%s", req_str);
489 void MC_show_deadlock(smx_simcall_t req)
491 /*char *req_str = NULL;*/
492 XBT_INFO("**************************");
493 XBT_INFO("*** DEAD-LOCK DETECTED ***");
494 XBT_INFO("**************************");
495 XBT_INFO("Locked request:");
496 /*req_str = MC_request_to_string(req);
497 XBT_INFO("%s", req_str);
499 XBT_INFO("Counter-example execution trace:");
500 MC_dump_stack_safety(mc_stack_safety);
504 void MC_show_stack_liveness(xbt_fifo_t stack){
506 mc_pair_stateless_t pair;
507 xbt_fifo_item_t item;
509 char *req_str = NULL;
511 for (item = xbt_fifo_get_last_item(stack);
512 (item ? (pair = (mc_pair_stateless_t) (xbt_fifo_get_item_content(item)))
513 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
514 req = MC_state_get_executed_request(pair->graph_state, &value);
516 if(pair->requests>0){
517 req_str = MC_request_to_string(req, value);
518 XBT_INFO("%s", req_str);
521 XBT_INFO("End of system requests but evolution in Büchi automaton");
527 void MC_dump_stack_liveness(xbt_fifo_t stack){
529 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
531 mc_pair_stateless_t pair;
534 while ((pair = (mc_pair_stateless_t) xbt_fifo_pop(stack)) != NULL)
535 MC_pair_stateless_delete(pair);
546 void MC_print_statistics(mc_stats_t stats)
548 //XBT_INFO("State space size ~= %lu", stats->state_size);
549 XBT_INFO("Expanded states = %lu", stats->expanded_states);
550 XBT_INFO("Visited states = %lu", stats->visited_states);
551 XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
552 XBT_INFO("Expanded / Visited = %lf",
553 (double) stats->visited_states / stats->expanded_states);
554 /*XBT_INFO("Exploration coverage = %lf",
555 (double)stats->expanded_states / stats->state_size); */
558 void MC_print_statistics_pairs(mc_stats_pair_t stats)
560 XBT_INFO("Expanded pairs = %lu", stats->expanded_pairs);
561 XBT_INFO("Visited pairs = %lu", stats->visited_pairs);
562 //XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
563 XBT_INFO("Expanded / Visited = %lf",
564 (double) stats->visited_pairs / stats->expanded_pairs);
565 /*XBT_INFO("Exploration coverage = %lf",
566 (double)stats->expanded_states / stats->state_size); */
569 void MC_assert(int prop)
571 if (MC_IS_ENABLED && !prop){
572 XBT_INFO("**************************");
573 XBT_INFO("*** PROPERTY NOT VALID ***");
574 XBT_INFO("**************************");
575 XBT_INFO("Counter-example execution trace:");
576 MC_dump_stack_safety(mc_stack_safety);
577 MC_print_statistics(mc_stats);
582 static void MC_assert_pair(int prop){
583 if (MC_IS_ENABLED && !prop) {
584 XBT_INFO("**************************");
585 XBT_INFO("*** PROPERTY NOT VALID ***");
586 XBT_INFO("**************************");
587 //XBT_INFO("Counter-example execution trace:");
588 MC_show_stack_liveness(mc_stack_liveness);
589 //MC_dump_snapshot_stack(mc_snapshot_stack);
590 MC_print_statistics_pairs(mc_stats_pair);
595 void MC_process_clock_add(smx_process_t process, double amount)
597 mc_time[process->pid] += amount;
600 double MC_process_clock_get(smx_process_t process)
603 return mc_time[process->pid];
608 void MC_automaton_load(const char *file){
610 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
614 if (_mc_property_automaton == NULL)
615 _mc_property_automaton = xbt_automaton_new();
617 xbt_automaton_load(_mc_property_automaton,file);
628 void MC_automaton_new_propositional_symbol(const char* id, void* fct) {
630 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
634 if (_mc_property_automaton == NULL)
635 _mc_property_automaton = xbt_automaton_new();
637 xbt_new_propositional_symbol(_mc_property_automaton,id,fct);
648 /************ MC_ignore ***********/
650 void MC_ignore_init(){
652 mmalloc_ignore = xbt_dynar_new(sizeof(mc_ignore_region_t), NULL);
653 stacks_areas = xbt_dynar_new(sizeof(stack_region_t), NULL);
657 void MC_ignore(void *address, size_t size){
661 mc_ignore_region_t region = NULL;
662 region = xbt_new0(s_mc_ignore_region_t, 1);
663 region->address = address;
665 region->block = ((char*)address - (char*)((xbt_mheap_t)std_heap)->heapbase) / BLOCKSIZE + 1;
667 if(((xbt_mheap_t)std_heap)->heapinfo[region->block].type == 0){
668 region->fragment = -1;
670 region->fragment = ((uintptr_t) (ADDR2UINT (address) % (BLOCKSIZE))) >> ((xbt_mheap_t)std_heap)->heapinfo[region->block].type;
673 unsigned int cursor = 0;
674 mc_ignore_region_t current_region;
675 xbt_dynar_foreach(mmalloc_ignore, cursor, current_region){
676 if(current_region->address > address)
680 xbt_dynar_insert_at(mmalloc_ignore, cursor, ®ion);
685 void MC_new_stack_area(void *stack, char *name){
687 stack_region_t region = NULL;
688 region = xbt_new0(s_stack_region_t, 1);
689 region->address = stack;
690 region->process_name = strdup(name);
691 xbt_dynar_push(stacks_areas, ®ion);
695 /************ DWARF ***********/
697 static e_dw_location_type get_location(char *expr, dw_location_t entry);
699 void MC_get_binary_local_variables(){
701 char *command = bprintf("dwarfdump -i %s", xbt_binary_name);
703 FILE* fp = popen(command, "r");
706 perror("popen failed");
708 char *line = NULL, *tmp_line = NULL, *tmp_location = NULL, *frame_name = NULL;
711 int valid_variable = 1, valid_frame = 1;
712 char *node_type = NULL, *location_type = NULL, *variable_name = NULL, *lowpc = NULL, *highpc = NULL;
713 xbt_dynar_t split = NULL;
715 void *low_pc = NULL, *old_low_pc = NULL;
717 int compile_unit_found = 0; /* Detect if the program has been compiled with -g */
719 read = getline(&line, &n, fp);
726 /* Wipeout the new line character */
727 line[read - 1] = '\0';
731 /* If the program hasn't been compiled with -g, no symbol (line starting with '<' ) found */
732 compile_unit_found = 1;
737 node_type = strdup(strtok(NULL, " "));
739 if(strcmp(node_type, "DW_TAG_subprogram") == 0){ /* New frame */
741 read = getline(&line, &n, fp);
744 while(read != -1 && line[0] != '<'){
749 node_type = strdup(strtok(line, " "));
751 if(node_type != NULL && strcmp(node_type, "DW_AT_name") == 0){
753 frame_name = strdup(strtok(NULL, " "));
754 xbt_str_trim(frame_name, NULL);
755 xbt_str_trim(frame_name, "\"");
756 read = getline(&line, &n, fp);
758 }else if(node_type != NULL && strcmp(node_type, "DW_AT_frame_base") == 0){
760 if(valid_frame == 1){
762 dw_frame_t frame = xbt_new0(s_dw_frame_t, 1);
763 frame->name = strdup(frame_name);
764 frame->variables = xbt_dynar_new(sizeof(dw_local_variable_t), NULL);
765 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 = strtok(NULL, "<");
782 highpc = strtok(NULL, ">");
783 tmp_location = 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);
813 read = getline(&line, &n, fp);
814 frame->location->type = get_location(location_type, frame->location);
818 xbt_dynar_push(mc_binary_local_variables, &frame);
822 read = getline(&line, &n, fp);
826 }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)){
828 read = getline(&line, &n, fp);
833 read = getline(&line, &n, fp);
843 }else if(strcmp(node_type, "DW_TAG_variable") == 0){ /* New variable */
845 read = getline(&line, &n, fp);
848 while(read != -1 && line[0] != '<'){
853 tmp_line = strdup(line);
855 node_type = strdup(strtok(line, " "));
857 if(node_type != NULL && strcmp(node_type, "DW_AT_name") == 0){
859 variable_name = strdup(strtok(NULL, " "));
860 xbt_str_trim(variable_name, NULL);
861 xbt_str_trim(variable_name, "\"");
862 read = getline(&line, &n, fp);
864 }else if(node_type != NULL && strcmp(node_type, "DW_AT_location") == 0){
866 if(valid_variable == 1){
868 location_type = strtok(NULL, " ");
870 dw_local_variable_t variable = xbt_new0(s_dw_local_variable_t, 1);
871 variable->name = strdup(variable_name);
872 variable->location = xbt_new0(s_dw_location_t, 1);
875 if(strcmp(location_type, "<loclist") == 0){
877 variable->location->type = e_dw_loclist;
878 variable->location->location.loclist = xbt_dynar_new(sizeof(dw_location_entry_t), NULL);
880 read = getline(&line, &n, fp);
881 xbt_str_ltrim(line, NULL);
883 while(read != -1 && line[0] == '['){
886 lowpc = strtok(NULL, "<");
887 highpc = strtok(NULL, ">");
888 tmp_location = strtok(NULL, ">");
889 lowpc[strlen(lowpc) - 1] = '\0'; /* Remove last character '>' */
891 dw_location_entry_t new_entry = xbt_new0(s_dw_location_entry_t, 1);
895 new_entry->lowpc = (void *) strtoul(strtok(NULL, "="), NULL, 16);
897 new_entry->highpc = (void *) strtoul(strtok(NULL, "="), NULL, 16);
900 old_low_pc = (void *)strtoul(strtok(NULL, "="), NULL, 16);
901 new_entry->lowpc = (char *)low_pc + (long)old_low_pc;
903 new_entry->highpc = (char*)low_pc + ((char *)((void *)strtoul(strtok(NULL, "="), NULL, 16)) - (char*)old_low_pc);
906 new_entry->location = xbt_new0(s_dw_location_t, 1);
908 get_location(tmp_location, new_entry->location);
910 xbt_dynar_push(variable->location->location.loclist, &new_entry);
912 read = getline(&line, &n, fp);
913 xbt_str_ltrim(line, NULL);
919 xbt_str_strip_spaces(tmp_line);
920 split = xbt_str_split(tmp_line, " ");
921 xbt_dynar_remove_at(split, 0, NULL);
922 location_type = xbt_str_join(split, " ");
924 variable->location->type = get_location(location_type, variable->location);
925 read = getline(&line, &n, fp);
929 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);
933 read = getline(&line, &n, fp);
937 }else if(node_type != NULL && (strcmp(node_type, "DW_AT_artificial") == 0 || strcmp(node_type, "DW_AT_external") == 0)){
940 read = getline(&line, &n, fp);
944 read = getline(&line, &n, fp);
955 }else if(strcmp(node_type, "DW_TAG_compile_unit") == 0){
958 read = getline(&line, &n, fp);
960 while(read != -1 && line[0] != '<'){
965 node_type = strdup(strtok(line, " "));
967 if(node_type != NULL && strcmp(node_type, "DW_AT_low_pc") == 0){
968 low_pc = (void *) strtoul(strtok(NULL, " "), NULL, 16);
971 read = getline(&line, &n, fp);
979 read = getline(&line, &n, fp);
987 read = getline(&line, &n, fp);
998 if(compile_unit_found == 0){
999 XBT_INFO("Your program must be compiled with -g");
1003 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug))
1004 print_local_variables(mc_binary_local_variables);
1009 void print_local_variables(xbt_dynar_t list){
1012 dw_local_variable_t variable;
1013 dw_location_entry_t entry;
1014 dw_location_t location_entry;
1015 unsigned int cursor = 0, cursor2 = 0, cursor3 = 0, cursor4 = 0;
1017 xbt_dynar_foreach(list, cursor, frame){
1018 fprintf(stderr, "Frame name : %s", frame->name);
1019 fprintf(stderr, "Location type : %d\n", frame->location->type);
1020 fprintf(stderr, "Variables : (%lu)\n", xbt_dynar_length(frame->variables));
1021 xbt_dynar_foreach(frame->variables, cursor2, variable){
1022 fprintf(stderr, "Name : %s", variable->name);
1023 fprintf(stderr, "Location type : %d\n", variable->location->type);
1024 switch(variable->location->type){
1026 xbt_dynar_foreach(variable->location->location.loclist, cursor3, entry){
1027 fprintf(stderr, "Lowpc : %p, Highpc : %p,", entry->lowpc, entry->highpc);
1028 switch(entry->location->type){
1029 case e_dw_register :
1030 fprintf(stderr, " Location : in register %d\n", entry->location->location.reg);
1032 case e_dw_bregister_op:
1033 fprintf(stderr, " Location : Add %d to the value in register %d\n", entry->location->location.breg_op.offset, entry->location->location.breg_op.reg);
1036 fprintf(stderr, "Value already kwnown : %d\n", entry->location->location.lit);
1038 case e_dw_fbregister_op:
1039 fprintf(stderr, " Location : %d bytes from logical frame pointer\n", entry->location->location.fbreg_op);
1042 fprintf(stderr, " Location :\n");
1043 xbt_dynar_foreach(entry->location->location.compose, cursor4, location_entry){
1044 switch(location_entry->type){
1045 case e_dw_register :
1046 fprintf(stderr, " %d) in register %d\n", cursor4 + 1, location_entry->location.reg);
1048 case e_dw_bregister_op:
1049 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);
1052 fprintf(stderr, "%d) Value already kwnown : %d\n", cursor4 + 1, location_entry->location.lit);
1054 case e_dw_fbregister_op:
1055 fprintf(stderr, " %d) %d bytes from logical frame pointer\n", cursor4 + 1, location_entry->location.fbreg_op);
1058 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);
1060 case e_dw_arithmetic :
1061 fprintf(stderr, "%d) arithmetic operation : %s\n", cursor4 + 1, location_entry->location.arithmetic);
1064 fprintf(stderr, "%d) The %d byte(s) previous value\n", cursor4 + 1, location_entry->location.piece);
1066 case e_dw_constant :
1067 fprintf(stderr, "%d) Constant %d\n", cursor4 + 1, location_entry->location.constant.value);
1070 fprintf(stderr, "%d) Location type not supported\n", cursor4 + 1);
1076 fprintf(stderr, "Location type not supported\n");
1083 fprintf(stderr, "Location :\n");
1084 xbt_dynar_foreach(variable->location->location.compose, cursor4, location_entry){
1085 switch(location_entry->type){
1086 case e_dw_register :
1087 fprintf(stderr, " %d) in register %d\n", cursor4 + 1, location_entry->location.reg);
1089 case e_dw_bregister_op:
1090 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);
1093 fprintf(stderr, "%d) Value already kwnown : %d\n", cursor4 + 1, location_entry->location.lit);
1095 case e_dw_fbregister_op:
1096 fprintf(stderr, " %d) %d bytes from logical frame pointer\n", cursor4 + 1, location_entry->location.fbreg_op);
1099 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);
1101 case e_dw_arithmetic :
1102 fprintf(stderr, "%d) arithmetic operation : %s\n", cursor4 + 1, location_entry->location.arithmetic);
1105 fprintf(stderr, "%d) The %d byte(s) previous value\n", cursor4 + 1, location_entry->location.piece);
1107 case e_dw_constant :
1108 fprintf(stderr, "%d) Constant %d\n", cursor4 + 1, location_entry->location.constant.value);
1111 fprintf(stderr, "%d) Location type not supported\n", cursor4 + 1);
1117 fprintf(stderr, "Location type not supported\n");
1125 static e_dw_location_type get_location(char *expr, dw_location_t entry){
1128 char *tok = NULL, *tmp_tok = NULL;
1130 xbt_dynar_t tokens = xbt_str_split(expr, NULL);
1131 xbt_dynar_remove_at(tokens, xbt_dynar_length(tokens) - 1, NULL);
1133 if(xbt_dynar_length(tokens) > 1){
1135 entry->type = e_dw_compose;
1136 entry->location.compose = xbt_dynar_new(sizeof(dw_location_t), NULL);
1138 while(cursor < xbt_dynar_length(tokens)){
1140 tok = xbt_dynar_get_as(tokens, cursor, char*);
1142 if(strncmp(tok, "DW_OP_reg", 9) == 0){
1143 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1144 new_element->type = e_dw_register;
1146 new_element->location.reg = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1148 new_element->location.reg = atoi(strtok(tok, "DW_OP_reg"));
1150 xbt_dynar_push(entry->location.compose, &new_element);
1151 }else if(strcmp(tok, "DW_OP_fbreg") == 0){
1152 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1153 new_element->type = e_dw_fbregister_op;
1154 new_element->location.fbreg_op = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1155 xbt_dynar_push(entry->location.compose, &new_element);
1156 }else if(strncmp(tok, "DW_OP_breg", 10) == 0){
1157 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1158 new_element->type = e_dw_bregister_op;
1160 new_element->location.breg_op.reg = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1161 new_element->location.breg_op.offset = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1163 if(strchr(tok,'+') != NULL){
1164 tmp_tok = strtok(tok,"DW_OP_breg");
1165 new_element->location.breg_op.reg = atoi(strtok(tmp_tok,"+"));
1166 new_element->location.breg_op.offset = atoi(strtok(NULL,"+"));
1168 new_element->location.breg_op.reg = atoi(strtok(tok, "DW_OP_breg"));
1169 new_element->location.breg_op.offset = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1172 xbt_dynar_push(entry->location.compose, &new_element);
1173 }else if(strncmp(tok, "DW_OP_lit", 9) == 0){
1174 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1175 new_element->type = e_dw_lit;
1176 new_element->location.lit = atoi(strtok(tok, "DW_OP_lit"));
1177 xbt_dynar_push(entry->location.compose, &new_element);
1178 }else if(strcmp(tok, "DW_OP_piece") == 0){
1179 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1180 new_element->type = e_dw_piece;
1181 if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
1182 new_element->location.piece = atoi(xbt_dynar_get_as(tokens, cursor, char*));
1184 new_element->location.piece = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';
1185 xbt_dynar_push(entry->location.compose, &new_element);
1187 }else if(strcmp(tok, "DW_OP_abs") == 0 ||
1188 strcmp(tok, "DW_OP_and") == 0 ||
1189 strcmp(tok, "DW_OP_div") == 0 ||
1190 strcmp(tok, "DW_OP_minus") == 0 ||
1191 strcmp(tok, "DW_OP_mod") == 0 ||
1192 strcmp(tok, "DW_OP_mul") == 0 ||
1193 strcmp(tok, "DW_OP_neg") == 0 ||
1194 strcmp(tok, "DW_OP_not") == 0 ||
1195 strcmp(tok, "DW_OP_or") == 0 ||
1196 strcmp(tok, "DW_OP_plus") == 0 ||
1197 strcmp(tok, "DW_OP_plus_uconst") == 0){
1198 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1199 new_element->type = e_dw_arithmetic;
1200 new_element->location.arithmetic = strdup(strtok(tok, "DW_OP_"));
1201 xbt_dynar_push(entry->location.compose, &new_element);
1202 }else if(strcmp(tok, "DW_OP_stack_value") == 0){
1204 }else if(strcmp(tok, "DW_OP_deref_size") == 0){
1205 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1206 new_element->type = e_dw_deref;
1207 if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
1208 new_element->location.deref_size = atoi(xbt_dynar_get_as(tokens, cursor, char*));
1210 new_element->location.deref_size = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';
1211 xbt_dynar_push(entry->location.compose, &new_element);
1212 }else if(strcmp(tok, "DW_OP_deref") == 0){
1213 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1214 new_element->type = e_dw_deref;
1215 new_element->location.deref_size = sizeof(void *);
1216 xbt_dynar_push(entry->location.compose, &new_element);
1217 }else if(strcmp(tok, "DW_OP_constu") == 0){
1218 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1219 new_element->type = e_dw_constant;
1220 new_element->location.constant.is_signed = 0;
1221 new_element->location.constant.bytes = 1;
1222 if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
1223 new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, cursor, char*));
1225 new_element->location.constant.value = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';
1226 xbt_dynar_push(entry->location.compose, &new_element);
1227 }else if(strcmp(tok, "DW_OP_consts") == 0){
1228 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1229 new_element->type = e_dw_constant;
1230 new_element->location.constant.is_signed = 1;
1231 new_element->location.constant.bytes = 1;
1232 new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1233 xbt_dynar_push(entry->location.compose, &new_element);
1234 }else if(strcmp(tok, "DW_OP_const1u") == 0 ||
1235 strcmp(tok, "DW_OP_const2u") == 0 ||
1236 strcmp(tok, "DW_OP_const4u") == 0 ||
1237 strcmp(tok, "DW_OP_const8u") == 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 = 0;
1241 new_element->location.constant.bytes = tok[11] - '0';
1242 if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
1243 new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, cursor, char*));
1245 new_element->location.constant.value = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';
1246 xbt_dynar_push(entry->location.compose, &new_element);
1247 }else if(strcmp(tok, "DW_OP_const1s") == 0 ||
1248 strcmp(tok, "DW_OP_const2s") == 0 ||
1249 strcmp(tok, "DW_OP_const4s") == 0 ||
1250 strcmp(tok, "DW_OP_const8s") == 0){
1251 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1252 new_element->type = e_dw_constant;
1253 new_element->location.constant.is_signed = 1;
1254 new_element->location.constant.bytes = tok[11] - '0';
1255 new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1256 xbt_dynar_push(entry->location.compose, &new_element);
1258 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1259 new_element->type = e_dw_unsupported;
1260 xbt_dynar_push(entry->location.compose, &new_element);
1267 xbt_dynar_free(&tokens);
1269 return e_dw_compose;
1273 if(strncmp(expr, "DW_OP_reg", 9) == 0){
1274 entry->type = e_dw_register;
1275 entry->location.reg = atoi(strtok(expr,"DW_OP_reg"));
1276 }else if(strncmp(expr, "DW_OP_breg", 10) == 0){
1277 entry->type = e_dw_bregister_op;
1278 tok = strtok(expr, "+");
1279 entry->location.breg_op.offset = atoi(strtok(NULL, "+"));
1280 entry->location.breg_op.reg = atoi(strtok(tok, "DW_OP_breg"));
1282 entry->type = e_dw_unsupported;
1285 xbt_dynar_free(&tokens);