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);
84 static e_dw_location_type get_location(char *expr, dw_location_t entry);
86 static void MC_get_binary_local_variables(void);
87 static void print_local_variables(xbt_dynar_t list);
89 void MC_do_the_modelcheck_for_real() {
90 if (!_surf_mc_property_file || _surf_mc_property_file[0]=='\0') {
91 if (mc_reduce_kind==e_mc_reduce_unset)
92 mc_reduce_kind=e_mc_reduce_dpor;
94 XBT_INFO("Check a safety property");
99 if (mc_reduce_kind==e_mc_reduce_unset)
100 mc_reduce_kind=e_mc_reduce_none;
102 XBT_INFO("Check the liveness property %s",_surf_mc_property_file);
103 MC_automaton_load(_surf_mc_property_file);
104 MC_modelcheck_liveness();
109 * \brief Initialize the model-checker data structures
111 void MC_init_safety(void)
114 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
116 /* Check if MC is already initialized */
117 if (initial_snapshot)
120 mc_time = xbt_new0(double, simix_process_maxpid);
122 /* Initialize the data structures that must be persistent across every
123 iteration of the model-checker (in RAW memory) */
127 /* Initialize statistics */
128 mc_stats = xbt_new0(s_mc_stats_t, 1);
129 mc_stats->state_size = 1;
131 /* Create exploration stack */
132 mc_stack_safety = xbt_fifo_new();
139 /* Save the initial state */
140 initial_snapshot = xbt_new0(s_mc_snapshot_t, 1);
141 MC_take_snapshot(initial_snapshot);
152 void MC_compare(void){
157 void MC_modelcheck(void)
164 void MC_modelcheck_liveness(){
166 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
169 XBT_DEBUG("Start init mc");
171 mc_time = xbt_new0(double, simix_process_maxpid);
173 /* mc_time refers to clock for each process -> ignore it for heap comparison */
175 for(i = 0; i<simix_process_maxpid; i++)
176 MC_ignore(&(mc_time[i]), sizeof(double));
180 /* Initialize the data structures that must be persistent across every
181 iteration of the model-checker (in RAW memory) */
185 /* Get local variables in binary for state equality detection */
186 MC_get_binary_local_variables();
188 /* Initialize statistics */
189 mc_stats_pair = xbt_new0(s_mc_stats_pair_t, 1);
191 XBT_DEBUG("Creating stack");
193 /* Create exploration stack */
194 mc_stack_liveness = xbt_fifo_new();
201 MC_print_statistics_pairs(mc_stats_pair);
210 MC_print_statistics(mc_stats);
216 int MC_random(int min, int max)
218 /*FIXME: return mc_current_state->executed_transition->random.value;*/
223 * \brief Schedules all the process that are ready to run
225 void MC_wait_for_requests(void)
227 smx_process_t process;
231 while (!xbt_dynar_is_empty(simix_global->process_to_run)) {
232 SIMIX_process_runall();
233 xbt_dynar_foreach(simix_global->process_that_ran, iter, process) {
234 req = &process->simcall;
235 if (req->call != SIMCALL_NONE && !MC_request_is_visible(req))
236 SIMIX_simcall_pre(req, 0);
241 int MC_deadlock_check()
243 int deadlock = FALSE;
244 smx_process_t process;
245 if(xbt_swag_size(simix_global->process_list)){
247 xbt_swag_foreach(process, simix_global->process_list){
248 if(process->simcall.call != SIMCALL_NONE
249 && MC_request_is_enabled(&process->simcall)){
259 * \brief Re-executes from the state at position start all the transitions indicated by
260 * a given model-checker stack.
261 * \param stack The stack with the transitions to execute.
262 * \param start Start index to begin the re-execution.
264 void MC_replay(xbt_fifo_t stack, int start)
266 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
270 smx_simcall_t req = NULL, saved_req = NULL;
271 xbt_fifo_item_t item, start_item;
274 XBT_DEBUG("**** Begin Replay ****");
277 /* Restore the initial state */
278 MC_restore_snapshot(initial_snapshot);
279 /* At the moment of taking the snapshot the raw heap was set, so restoring
280 * it will set it back again, we have to unset it to continue */
284 start_item = xbt_fifo_get_last_item(stack);
287 start_item = xbt_fifo_get_prev_item(start_item);
292 /* Traverse the stack from the state at position start and re-execute the transitions */
293 for (item = start_item;
294 item != xbt_fifo_get_first_item(stack);
295 item = xbt_fifo_get_prev_item(item)) {
297 state = (mc_state_t) xbt_fifo_get_item_content(item);
298 saved_req = MC_state_get_executed_request(state, &value);
301 /* because we got a copy of the executed request, we have to fetch the
302 real one, pointed by the request field of the issuer process */
303 req = &saved_req->issuer->simcall;
305 /* Debug information */
306 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
307 req_str = MC_request_to_string(req, value);
308 XBT_DEBUG("Replay: %s (%p)", req_str, state);
313 SIMIX_simcall_pre(req, value);
314 MC_wait_for_requests();
316 /* Update statistics */
317 mc_stats->visited_states++;
318 mc_stats->executed_transitions++;
320 XBT_DEBUG("**** End Replay ****");
330 void MC_replay_liveness(xbt_fifo_t stack, int all_stack)
333 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
337 smx_simcall_t req = NULL, saved_req = NULL;
338 xbt_fifo_item_t item;
340 mc_pair_stateless_t pair;
343 XBT_DEBUG("**** Begin Replay ****");
345 /* Restore the initial state */
346 MC_restore_snapshot(initial_snapshot_liveness);
347 /* At the moment of taking the snapshot the raw heap was set, so restoring
348 * it will set it back again, we have to unset it to continue */
353 item = xbt_fifo_get_last_item(stack);
355 while(depth <= xbt_fifo_size(stack)){
357 pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item);
358 state = (mc_state_t) pair->graph_state;
360 if(pair->requests > 0){
362 saved_req = MC_state_get_executed_request(state, &value);
363 //XBT_DEBUG("SavedReq->call %u", saved_req->call);
365 if(saved_req != NULL){
366 /* because we got a copy of the executed request, we have to fetch the
367 real one, pointed by the request field of the issuer process */
368 req = &saved_req->issuer->simcall;
369 //XBT_DEBUG("Req->call %u", req->call);
371 /* Debug information */
372 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
373 req_str = MC_request_to_string(req, value);
374 XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
380 SIMIX_simcall_pre(req, value);
381 MC_wait_for_requests();
386 /* Update statistics */
387 mc_stats_pair->visited_pairs++;
389 item = xbt_fifo_get_prev_item(item);
394 /* Traverse the stack from the initial state and re-execute the transitions */
395 for (item = xbt_fifo_get_last_item(stack);
396 item != xbt_fifo_get_first_item(stack);
397 item = xbt_fifo_get_prev_item(item)) {
399 pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item);
400 state = (mc_state_t) pair->graph_state;
402 if(pair->requests > 0){
404 saved_req = MC_state_get_executed_request(state, &value);
405 //XBT_DEBUG("SavedReq->call %u", saved_req->call);
407 if(saved_req != NULL){
408 /* because we got a copy of the executed request, we have to fetch the
409 real one, pointed by the request field of the issuer process */
410 req = &saved_req->issuer->simcall;
411 //XBT_DEBUG("Req->call %u", req->call);
413 /* Debug information */
414 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
415 req_str = MC_request_to_string(req, value);
416 XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
422 SIMIX_simcall_pre(req, value);
423 MC_wait_for_requests();
428 /* Update statistics */
429 mc_stats_pair->visited_pairs++;
433 XBT_DEBUG("**** End Replay ****");
443 * \brief Dumps the contents of a model-checker's stack and shows the actual
445 * \param stack The stack to dump
447 void MC_dump_stack_safety(xbt_fifo_t stack)
450 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
452 MC_show_stack_safety(stack);
454 if(!_surf_mc_checkpoint){
459 while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL)
460 MC_state_delete(state);
473 void MC_show_stack_safety(xbt_fifo_t stack)
477 xbt_fifo_item_t item;
479 char *req_str = NULL;
481 for (item = xbt_fifo_get_last_item(stack);
482 (item ? (state = (mc_state_t) (xbt_fifo_get_item_content(item)))
483 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
484 req = MC_state_get_executed_request(state, &value);
486 req_str = MC_request_to_string(req, value);
487 XBT_INFO("%s", req_str);
493 void MC_show_deadlock(smx_simcall_t req)
495 /*char *req_str = NULL;*/
496 XBT_INFO("**************************");
497 XBT_INFO("*** DEAD-LOCK DETECTED ***");
498 XBT_INFO("**************************");
499 XBT_INFO("Locked request:");
500 /*req_str = MC_request_to_string(req);
501 XBT_INFO("%s", req_str);
503 XBT_INFO("Counter-example execution trace:");
504 MC_dump_stack_safety(mc_stack_safety);
508 void MC_show_stack_liveness(xbt_fifo_t stack){
510 mc_pair_stateless_t pair;
511 xbt_fifo_item_t item;
513 char *req_str = NULL;
515 for (item = xbt_fifo_get_last_item(stack);
516 (item ? (pair = (mc_pair_stateless_t) (xbt_fifo_get_item_content(item)))
517 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
518 req = MC_state_get_executed_request(pair->graph_state, &value);
520 if(pair->requests>0){
521 req_str = MC_request_to_string(req, value);
522 XBT_INFO("%s", req_str);
525 XBT_INFO("End of system requests but evolution in Büchi automaton");
531 void MC_dump_stack_liveness(xbt_fifo_t stack){
533 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
535 mc_pair_stateless_t pair;
538 while ((pair = (mc_pair_stateless_t) xbt_fifo_pop(stack)) != NULL)
539 MC_pair_stateless_delete(pair);
550 void MC_print_statistics(mc_stats_t stats)
552 //XBT_INFO("State space size ~= %lu", stats->state_size);
553 XBT_INFO("Expanded states = %lu", stats->expanded_states);
554 XBT_INFO("Visited states = %lu", stats->visited_states);
555 XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
556 XBT_INFO("Expanded / Visited = %lf",
557 (double) stats->visited_states / stats->expanded_states);
558 /*XBT_INFO("Exploration coverage = %lf",
559 (double)stats->expanded_states / stats->state_size); */
562 void MC_print_statistics_pairs(mc_stats_pair_t stats)
564 XBT_INFO("Expanded pairs = %lu", stats->expanded_pairs);
565 XBT_INFO("Visited pairs = %lu", stats->visited_pairs);
566 //XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
567 XBT_INFO("Expanded / Visited = %lf",
568 (double) stats->visited_pairs / stats->expanded_pairs);
569 /*XBT_INFO("Exploration coverage = %lf",
570 (double)stats->expanded_states / stats->state_size); */
573 void MC_assert(int prop)
575 if (MC_IS_ENABLED && !prop){
576 XBT_INFO("**************************");
577 XBT_INFO("*** PROPERTY NOT VALID ***");
578 XBT_INFO("**************************");
579 XBT_INFO("Counter-example execution trace:");
580 MC_dump_stack_safety(mc_stack_safety);
581 MC_print_statistics(mc_stats);
586 static void MC_assert_pair(int prop){
587 if (MC_IS_ENABLED && !prop) {
588 XBT_INFO("**************************");
589 XBT_INFO("*** PROPERTY NOT VALID ***");
590 XBT_INFO("**************************");
591 //XBT_INFO("Counter-example execution trace:");
592 MC_show_stack_liveness(mc_stack_liveness);
593 //MC_dump_snapshot_stack(mc_snapshot_stack);
594 MC_print_statistics_pairs(mc_stats_pair);
599 void MC_process_clock_add(smx_process_t process, double amount)
601 mc_time[process->pid] += amount;
604 double MC_process_clock_get(smx_process_t process)
607 return mc_time[process->pid];
612 void MC_automaton_load(const char *file){
614 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
618 if (_mc_property_automaton == NULL)
619 _mc_property_automaton = xbt_automaton_new();
621 xbt_automaton_load(_mc_property_automaton,file);
632 void MC_automaton_new_propositional_symbol(const char* id, void* fct) {
634 raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
638 if (_mc_property_automaton == NULL)
639 _mc_property_automaton = xbt_automaton_new();
641 xbt_new_propositional_symbol(_mc_property_automaton,id,fct);
652 /************ MC_ignore ***********/
654 void MC_ignore_init(){
656 mmalloc_ignore = xbt_dynar_new(sizeof(mc_ignore_region_t), NULL);
657 stacks_areas = xbt_dynar_new(sizeof(stack_region_t), NULL);
661 void MC_ignore(void *address, size_t size){
665 mc_ignore_region_t region = NULL;
666 region = xbt_new0(s_mc_ignore_region_t, 1);
667 region->address = address;
669 region->block = ((char*)address - (char*)((xbt_mheap_t)std_heap)->heapbase) / BLOCKSIZE + 1;
671 if(((xbt_mheap_t)std_heap)->heapinfo[region->block].type == 0){
672 region->fragment = -1;
674 region->fragment = ((uintptr_t) (ADDR2UINT (address) % (BLOCKSIZE))) >> ((xbt_mheap_t)std_heap)->heapinfo[region->block].type;
677 unsigned int cursor = 0;
678 mc_ignore_region_t current_region;
679 xbt_dynar_foreach(mmalloc_ignore, cursor, current_region){
680 if(current_region->address > address)
684 xbt_dynar_insert_at(mmalloc_ignore, cursor, ®ion);
689 void MC_new_stack_area(void *stack, char *name){
691 stack_region_t region = NULL;
692 region = xbt_new0(s_stack_region_t, 1);
693 region->address = stack;
694 region->process_name = strdup(name);
695 xbt_dynar_push(stacks_areas, ®ion);
699 /************ DWARF ***********/
701 static void MC_get_binary_local_variables(){
703 mc_binary_local_variables = xbt_dynar_new(sizeof(dw_frame_t), NULL);
705 char *command = bprintf("dwarfdump -i %s", xbt_binary_name);
707 FILE* fp = popen(command, "r");
710 perror("popen failed");
712 char *line = NULL, *tmp_line = NULL, *tmp_location, *frame_name = NULL;
715 int valid_variable = 1, valid_frame = 1;
716 char *node_type, *location_type, *variable_name = NULL, *lowpc, *highpc;
717 xbt_dynar_t split = NULL;
719 void *low_pc = NULL, *old_low_pc = NULL;
721 int compile_unit_found = 0; /* Detect if the program has been compiled with -g */
723 read = getline(&line, &n, fp);
730 /* Wipeout the new line character */
731 line[read - 1] = '\0';
735 /* If the program hasn't been compiled with -g, no symbol (line starting with '<' ) found */
736 compile_unit_found = 1;
741 node_type = strtok(NULL, " ");
743 if(strcmp(node_type, "DW_TAG_subprogram") == 0){ /* New frame */
745 read = getline(&line, &n, fp);
747 while(read != -1 && line[0] != '<'){
752 node_type = strtok(line, " ");
754 if(node_type != NULL && strcmp(node_type, "DW_AT_name") == 0){
756 frame_name = strdup(strtok(NULL, " "));
757 xbt_str_trim(frame_name, NULL);
758 xbt_str_trim(frame_name, "\"");
759 read = getline(&line, &n, fp);
761 }else if(node_type != NULL && strcmp(node_type, "DW_AT_frame_base") == 0){
763 if(valid_frame == 1){
765 dw_frame_t frame = xbt_new0(s_dw_frame_t, 1);
766 frame->name = strdup(frame_name);
767 frame->variables = xbt_dynar_new(sizeof(dw_local_variable_t), NULL);
768 frame->location = xbt_new0(s_dw_location_t, 1);
771 location_type = strtok(NULL, " ");
773 if(strcmp(location_type, "<loclist") == 0){
775 frame->location->type = e_dw_loclist;
776 frame->location->location.loclist = xbt_dynar_new(sizeof(dw_location_entry_t), NULL);
778 read = getline(&line, &n, fp);
779 xbt_str_ltrim(line, NULL);
781 while(read != -1 && line[0] == '['){
784 lowpc = strtok(NULL, "<");
785 highpc = strtok(NULL, ">");
786 tmp_location = strtok(NULL, ">");
787 lowpc[strlen(lowpc) - 1] = '\0'; /* Remove last character '>' */
789 dw_location_entry_t new_entry = xbt_new0(s_dw_location_entry_t, 1);
793 new_entry->lowpc = (void *) strtoul(strtok(NULL, "="), NULL, 16);
795 new_entry->highpc = (void *) strtoul(strtok(NULL, "="), NULL, 16);
798 old_low_pc = (void *)strtoul(strtok(NULL, "="), NULL, 16);
799 new_entry->lowpc = (char *)low_pc + (long)old_low_pc;
801 new_entry->highpc = (char*)low_pc + ((char *)((void *)strtoul(strtok(NULL, "="), NULL, 16)) - (char*)old_low_pc);
804 new_entry->location = xbt_new0(s_dw_location_t, 1);
806 get_location(tmp_location, new_entry->location);
808 xbt_dynar_push(frame->location->location.loclist, &new_entry);
810 read = getline(&line, &n, fp);
811 xbt_str_ltrim(line, NULL);
816 read = getline(&line, &n, fp);
817 frame->location->type = get_location(location_type, frame->location);
821 xbt_dynar_push(mc_binary_local_variables, &frame);
825 read = getline(&line, &n, fp);
829 }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)){
831 read = getline(&line, &n, fp);
836 read = getline(&line, &n, fp);
844 }else if(strcmp(node_type, "DW_TAG_variable") == 0){ /* New variable */
846 read = getline(&line, &n, fp);
848 while(read != -1 && line[0] != '<'){
853 tmp_line = strdup(line);
855 node_type = 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);
927 xbt_dynar_free(&split);
932 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);
936 read = getline(&line, &n, fp);
940 }else if(node_type != NULL && (strcmp(node_type, "DW_AT_artificial") == 0 || strcmp(node_type, "DW_AT_external") == 0)){
943 read = getline(&line, &n, fp);
947 read = getline(&line, &n, fp);
957 }else if(strcmp(node_type, "DW_TAG_compile_unit") == 0){
959 read = getline(&line, &n, fp);
961 while(read != -1 && line[0] != '<'){
966 node_type = strtok(line, " ");
968 if(node_type != NULL && strcmp(node_type, "DW_AT_low_pc") == 0){
969 low_pc = (void *) strtoul(strtok(NULL, " "), NULL, 16);
972 read = getline(&line, &n, fp);
978 read = getline(&line, &n, fp);
985 read = getline(&line, &n, fp);
996 if(compile_unit_found == 0){
997 XBT_INFO("Your program must be compiled with -g");
1001 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug))
1002 print_local_variables(mc_binary_local_variables);
1007 void print_local_variables(xbt_dynar_t list){
1010 dw_local_variable_t variable;
1011 dw_location_entry_t entry;
1012 dw_location_t location_entry;
1013 unsigned int cursor = 0, cursor2 = 0, cursor3 = 0, cursor4 = 0;
1015 xbt_dynar_foreach(list, cursor, frame){
1016 fprintf(stderr, "Frame name : %s", frame->name);
1017 fprintf(stderr, "Location type : %d\n", frame->location->type);
1018 fprintf(stderr, "Variables : (%lu)\n", xbt_dynar_length(frame->variables));
1019 xbt_dynar_foreach(frame->variables, cursor2, variable){
1020 fprintf(stderr, "Name : %s", variable->name);
1021 fprintf(stderr, "Location type : %d\n", variable->location->type);
1022 switch(variable->location->type){
1024 xbt_dynar_foreach(variable->location->location.loclist, cursor3, entry){
1025 fprintf(stderr, "Lowpc : %p, Highpc : %p,", entry->lowpc, entry->highpc);
1026 switch(entry->location->type){
1027 case e_dw_register :
1028 fprintf(stderr, " Location : in register %d\n", entry->location->location.reg);
1030 case e_dw_bregister_op:
1031 fprintf(stderr, " Location : Add %d to the value in register %d\n", entry->location->location.breg_op.offset, entry->location->location.breg_op.reg);
1034 fprintf(stderr, "Value already kwnown : %d\n", entry->location->location.lit);
1036 case e_dw_fbregister_op:
1037 fprintf(stderr, " Location : %d bytes from logical frame pointer\n", entry->location->location.fbreg_op);
1040 fprintf(stderr, " Location :\n");
1041 xbt_dynar_foreach(entry->location->location.compose, cursor4, location_entry){
1042 switch(location_entry->type){
1043 case e_dw_register :
1044 fprintf(stderr, " %d) in register %d\n", cursor4 + 1, location_entry->location.reg);
1046 case e_dw_bregister_op:
1047 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);
1050 fprintf(stderr, "%d) Value already kwnown : %d\n", cursor4 + 1, location_entry->location.lit);
1052 case e_dw_fbregister_op:
1053 fprintf(stderr, " %d) %d bytes from logical frame pointer\n", cursor4 + 1, location_entry->location.fbreg_op);
1056 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);
1058 case e_dw_arithmetic :
1059 fprintf(stderr, "%d) arithmetic operation : %s\n", cursor4 + 1, location_entry->location.arithmetic);
1062 fprintf(stderr, "%d) The %d byte(s) previous value\n", cursor4 + 1, location_entry->location.piece);
1064 case e_dw_constant :
1065 fprintf(stderr, "%d) Constant %d\n", cursor4 + 1, location_entry->location.constant.value);
1068 fprintf(stderr, "%d) Location type not supported\n", cursor4 + 1);
1074 fprintf(stderr, "Location type not supported\n");
1081 fprintf(stderr, "Location :\n");
1082 xbt_dynar_foreach(variable->location->location.compose, cursor4, location_entry){
1083 switch(location_entry->type){
1084 case e_dw_register :
1085 fprintf(stderr, " %d) in register %d\n", cursor4 + 1, location_entry->location.reg);
1087 case e_dw_bregister_op:
1088 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);
1091 fprintf(stderr, "%d) Value already kwnown : %d\n", cursor4 + 1, location_entry->location.lit);
1093 case e_dw_fbregister_op:
1094 fprintf(stderr, " %d) %d bytes from logical frame pointer\n", cursor4 + 1, location_entry->location.fbreg_op);
1097 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);
1099 case e_dw_arithmetic :
1100 fprintf(stderr, "%d) arithmetic operation : %s\n", cursor4 + 1, location_entry->location.arithmetic);
1103 fprintf(stderr, "%d) The %d byte(s) previous value\n", cursor4 + 1, location_entry->location.piece);
1105 case e_dw_constant :
1106 fprintf(stderr, "%d) Constant %d\n", cursor4 + 1, location_entry->location.constant.value);
1109 fprintf(stderr, "%d) Location type not supported\n", cursor4 + 1);
1115 fprintf(stderr, "Location type not supported\n");
1123 static e_dw_location_type get_location(char *expr, dw_location_t entry){
1126 char *tok = NULL, *tmp_tok = NULL;
1128 xbt_dynar_t tokens = xbt_str_split(expr, NULL);
1129 xbt_dynar_remove_at(tokens, xbt_dynar_length(tokens) - 1, NULL);
1131 if(xbt_dynar_length(tokens) > 1){
1133 entry->type = e_dw_compose;
1134 entry->location.compose = xbt_dynar_new(sizeof(dw_location_t), NULL);
1136 while(cursor < xbt_dynar_length(tokens)){
1138 tok = xbt_dynar_get_as(tokens, cursor, char*);
1140 if(strncmp(tok, "DW_OP_reg", 9) == 0){
1141 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1142 new_element->type = e_dw_register;
1144 new_element->location.reg = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1146 new_element->location.reg = atoi(strtok(tok, "DW_OP_reg"));
1148 xbt_dynar_push(entry->location.compose, &new_element);
1149 }else if(strcmp(tok, "DW_OP_fbreg") == 0){
1150 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1151 new_element->type = e_dw_fbregister_op;
1152 new_element->location.fbreg_op = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1153 xbt_dynar_push(entry->location.compose, &new_element);
1154 }else if(strncmp(tok, "DW_OP_breg", 10) == 0){
1155 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1156 new_element->type = e_dw_bregister_op;
1158 new_element->location.breg_op.reg = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1159 new_element->location.breg_op.offset = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1161 if(strchr(tok,'+') != NULL){
1162 tmp_tok = strtok(tok,"DW_OP_breg");
1163 new_element->location.breg_op.reg = atoi(strtok(tmp_tok,"+"));
1164 new_element->location.breg_op.offset = atoi(strtok(NULL,"+"));
1166 new_element->location.breg_op.reg = atoi(strtok(tok, "DW_OP_breg"));
1167 new_element->location.breg_op.offset = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1170 xbt_dynar_push(entry->location.compose, &new_element);
1171 }else if(strncmp(tok, "DW_OP_lit", 9) == 0){
1172 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1173 new_element->type = e_dw_lit;
1174 new_element->location.lit = atoi(strtok(tok, "DW_OP_lit"));
1175 xbt_dynar_push(entry->location.compose, &new_element);
1176 }else if(strcmp(tok, "DW_OP_piece") == 0){
1177 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1178 new_element->type = e_dw_piece;
1179 if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
1180 new_element->location.piece = atoi(xbt_dynar_get_as(tokens, cursor, char*));
1182 new_element->location.piece = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';
1183 xbt_dynar_push(entry->location.compose, &new_element);
1185 }else if(strcmp(tok, "DW_OP_abs") == 0 ||
1186 strcmp(tok, "DW_OP_and") == 0 ||
1187 strcmp(tok, "DW_OP_div") == 0 ||
1188 strcmp(tok, "DW_OP_minus") == 0 ||
1189 strcmp(tok, "DW_OP_mod") == 0 ||
1190 strcmp(tok, "DW_OP_mul") == 0 ||
1191 strcmp(tok, "DW_OP_neg") == 0 ||
1192 strcmp(tok, "DW_OP_not") == 0 ||
1193 strcmp(tok, "DW_OP_or") == 0 ||
1194 strcmp(tok, "DW_OP_plus") == 0 ||
1195 strcmp(tok, "DW_OP_plus_uconst") == 0){
1196 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1197 new_element->type = e_dw_arithmetic;
1198 new_element->location.arithmetic = strdup(strtok(tok, "DW_OP_"));
1199 xbt_dynar_push(entry->location.compose, &new_element);
1200 }else if(strcmp(tok, "DW_OP_stack_value") == 0){
1202 }else if(strcmp(tok, "DW_OP_deref_size") == 0){
1203 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1204 new_element->type = e_dw_deref;
1205 if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
1206 new_element->location.deref_size = atoi(xbt_dynar_get_as(tokens, cursor, char*));
1208 new_element->location.deref_size = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';
1209 xbt_dynar_push(entry->location.compose, &new_element);
1210 }else if(strcmp(tok, "DW_OP_deref") == 0){
1211 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1212 new_element->type = e_dw_deref;
1213 new_element->location.deref_size = sizeof(void *);
1214 xbt_dynar_push(entry->location.compose, &new_element);
1215 }else if(strcmp(tok, "DW_OP_constu") == 0){
1216 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1217 new_element->type = e_dw_constant;
1218 new_element->location.constant.is_signed = 0;
1219 new_element->location.constant.bytes = 1;
1220 if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
1221 new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, cursor, char*));
1223 new_element->location.constant.value = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';
1224 xbt_dynar_push(entry->location.compose, &new_element);
1225 }else if(strcmp(tok, "DW_OP_consts") == 0){
1226 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1227 new_element->type = e_dw_constant;
1228 new_element->location.constant.is_signed = 1;
1229 new_element->location.constant.bytes = 1;
1230 new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1231 xbt_dynar_push(entry->location.compose, &new_element);
1232 }else if(strcmp(tok, "DW_OP_const1u") == 0 ||
1233 strcmp(tok, "DW_OP_const2u") == 0 ||
1234 strcmp(tok, "DW_OP_const4u") == 0 ||
1235 strcmp(tok, "DW_OP_const8u") == 0){
1236 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1237 new_element->type = e_dw_constant;
1238 new_element->location.constant.is_signed = 0;
1239 new_element->location.constant.bytes = tok[11] - '0';
1240 if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
1241 new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, cursor, char*));
1243 new_element->location.constant.value = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';
1244 xbt_dynar_push(entry->location.compose, &new_element);
1245 }else if(strcmp(tok, "DW_OP_const1s") == 0 ||
1246 strcmp(tok, "DW_OP_const2s") == 0 ||
1247 strcmp(tok, "DW_OP_const4s") == 0 ||
1248 strcmp(tok, "DW_OP_const8s") == 0){
1249 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1250 new_element->type = e_dw_constant;
1251 new_element->location.constant.is_signed = 1;
1252 new_element->location.constant.bytes = tok[11] - '0';
1253 new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
1254 xbt_dynar_push(entry->location.compose, &new_element);
1256 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1257 new_element->type = e_dw_unsupported;
1258 xbt_dynar_push(entry->location.compose, &new_element);
1265 xbt_dynar_free(&tokens);
1267 return e_dw_compose;
1271 if(strncmp(expr, "DW_OP_reg", 9) == 0){
1272 entry->type = e_dw_register;
1273 entry->location.reg = atoi(strtok(expr,"DW_OP_reg"));
1274 }else if(strncmp(expr, "DW_OP_breg", 10) == 0){
1275 entry->type = e_dw_bregister_op;
1276 tok = strtok(expr, "+");
1277 entry->location.breg_op.offset = atoi(strtok(NULL, "+"));
1278 entry->location.breg_op.reg = atoi(strtok(tok, "DW_OP_breg"));
1280 entry->type = e_dw_unsupported;
1283 xbt_dynar_free(&tokens);