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 "simgrid/sg_config.h"
12 #include "../surf/surf_private.h"
13 #include "../simix/smx_private.h"
14 #include "../xbt/mmalloc/mmprivate.h"
16 #include "mc_private.h"
17 #include "xbt/automaton.h"
20 XBT_LOG_NEW_CATEGORY(mc, "All MC categories");
21 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_global, mc,
22 "Logging specific to MC (global)");
24 /* Configuration support */
25 e_mc_reduce_t mc_reduce_kind=e_mc_reduce_unset;
27 int _sg_do_model_check = 0;
28 int _sg_mc_checkpoint=0;
29 char* _sg_mc_property_file=NULL;
31 int _sg_mc_max_depth=1000;
34 extern int _sg_init_status;
35 void _mc_cfg_cb_reduce(const char *name, int pos) {
36 if (_sg_init_status && !_sg_do_model_check) {
37 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.");
39 char *val= xbt_cfg_get_string(_sg_cfg_set, name);
40 if (!strcasecmp(val,"none")) {
41 mc_reduce_kind = e_mc_reduce_none;
42 } else if (!strcasecmp(val,"dpor")) {
43 mc_reduce_kind = e_mc_reduce_dpor;
45 xbt_die("configuration option %s can only take 'none' or 'dpor' as a value",name);
49 void _mc_cfg_cb_checkpoint(const char *name, int pos) {
50 if (_sg_init_status && !_sg_do_model_check) {
51 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.");
53 _sg_mc_checkpoint = xbt_cfg_get_int(_sg_cfg_set, name);
55 void _mc_cfg_cb_property(const char *name, int pos) {
56 if (_sg_init_status && !_sg_do_model_check) {
57 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.");
59 _sg_mc_property_file= xbt_cfg_get_string(_sg_cfg_set, name);
62 void _mc_cfg_cb_timeout(const char *name, int pos) {
63 if (_sg_init_status && !_sg_do_model_check) {
64 xbt_die("You are specifying a value to enable/disable timeout for wait requests 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.");
66 _sg_mc_timeout= xbt_cfg_get_int(_sg_cfg_set, name);
69 void _mc_cfg_cb_max_depth(const char *name, int pos) {
70 if (_sg_init_status && !_sg_do_model_check) {
71 xbt_die("You are specifying a max depth 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.");
73 _sg_mc_max_depth= xbt_cfg_get_int(_sg_cfg_set, name);
76 void _mc_cfg_cb_visited(const char *name, int pos) {
77 if (_sg_init_status && !_sg_do_model_check) {
78 xbt_die("You are specifying a number of stored visited states 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.");
80 _sg_mc_visited= xbt_cfg_get_int(_sg_cfg_set, name);
84 /* MC global data structures */
86 mc_state_t mc_current_state = NULL;
87 char mc_replay_mode = FALSE;
88 double *mc_time = NULL;
89 mc_comparison_times_t mc_comp_times = NULL;
90 double mc_snapshot_comparison_time;
94 xbt_fifo_t mc_stack_safety = NULL;
95 mc_stats_t mc_stats = NULL;
96 mc_global_t initial_state_safety = NULL;
100 mc_stats_pair_t mc_stats_pair = NULL;
101 xbt_fifo_t mc_stack_liveness = NULL;
102 mc_global_t initial_state_liveness = NULL;
106 xbt_dict_t mc_local_variables = NULL;
108 xbt_dynar_t mc_global_variables = NULL;
110 /* Ignore mechanism */
111 xbt_dynar_t mc_stack_comparison_ignore;
112 xbt_dynar_t mc_data_bss_comparison_ignore;
113 extern xbt_dynar_t mc_heap_comparison_ignore;
114 extern xbt_dynar_t stacks_areas;
116 xbt_automaton_t _mc_property_automaton = NULL;
118 /* Static functions */
120 static void MC_assert_pair(int prop);
121 static dw_location_t get_location(xbt_dict_t location_list, char *expr);
122 static dw_frame_t get_frame_by_offset(xbt_dict_t all_variables, unsigned long int offset);
123 static size_t data_bss_ignore_size(void *address);
124 static void MC_get_global_variables(char *elf_file);
126 void MC_do_the_modelcheck_for_real() {
129 mc_comp_times = xbt_new0(s_mc_comparison_times_t, 1);
132 if (!_sg_mc_property_file || _sg_mc_property_file[0]=='\0') {
133 if (mc_reduce_kind==e_mc_reduce_unset)
134 mc_reduce_kind=e_mc_reduce_dpor;
136 XBT_INFO("Check a safety property");
137 MC_modelcheck_safety();
141 if (mc_reduce_kind==e_mc_reduce_unset)
142 mc_reduce_kind=e_mc_reduce_none;
144 XBT_INFO("Check the liveness property %s",_sg_mc_property_file);
145 MC_automaton_load(_sg_mc_property_file);
146 MC_modelcheck_liveness();
151 void MC_compare(void){
157 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
159 mc_time = xbt_new0(double, simix_process_maxpid);
161 /* mc_time refers to clock for each process -> ignore it for heap comparison */
163 for(i = 0; i<simix_process_maxpid; i++)
164 MC_ignore_heap(&(mc_time[i]), sizeof(double));
168 /* Initialize the data structures that must be persistent across every
169 iteration of the model-checker (in RAW memory) */
173 MC_init_memory_map_info();
175 mc_local_variables = xbt_dict_new_homogeneous(NULL);
177 /* Get local variables in binary for state equality detection */
178 xbt_dict_t binary_location_list = MC_get_location_list(xbt_binary_name);
179 MC_get_local_variables(xbt_binary_name, binary_location_list, &mc_local_variables);
181 /* Get local variables in libsimgrid for state equality detection */
182 xbt_dict_t libsimgrid_location_list = MC_get_location_list(libsimgrid_path);
183 MC_get_local_variables(libsimgrid_path, libsimgrid_location_list, &mc_local_variables);
185 xbt_dict_free(&libsimgrid_location_list);
186 xbt_dict_free(&binary_location_list);
188 /* Get .plt section (start and end addresses) for data libsimgrid and data program comparison */
189 get_libsimgrid_plt_section();
190 get_binary_plt_section();
192 /* Get global variables */
193 MC_get_global_variables(xbt_binary_name);
194 MC_get_global_variables(libsimgrid_path);
198 /* Ignore some variables from xbt/ex.h used by exception e for stacks comparison */
199 MC_ignore_stack("e", "*");
200 MC_ignore_stack("__ex_cleanup", "*");
201 MC_ignore_stack("__ex_mctx_en", "*");
202 MC_ignore_stack("__ex_mctx_me", "*");
203 MC_ignore_stack("__xbt_ex_ctx_ptr", "*");
204 MC_ignore_stack("_log_ev", "*");
205 MC_ignore_stack("_throw_ctx", "*");
206 MC_ignore_stack("ctx", "*");
208 MC_ignore_stack("next_context", "smx_ctx_sysv_suspend_serial");
209 MC_ignore_stack("i", "smx_ctx_sysv_suspend_serial");
211 MC_ignore_data_bss(&mc_comp_times, sizeof(mc_comp_times));
212 MC_ignore_data_bss(&mc_snapshot_comparison_time, sizeof(mc_snapshot_comparison_time));
219 void MC_modelcheck_safety(void)
221 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
223 /* Check if MC is already initialized */
224 if (initial_state_safety)
227 mc_time = xbt_new0(double, simix_process_maxpid);
229 /* Initialize the data structures that must be persistent across every
230 iteration of the model-checker (in RAW memory) */
234 /* Initialize statistics */
235 mc_stats = xbt_new0(s_mc_stats_t, 1);
236 mc_stats->state_size = 1;
238 /* Create exploration stack */
239 mc_stack_safety = xbt_fifo_new();
243 if(_sg_mc_visited > 0){
247 MC_init_memory_map_info();
248 get_libsimgrid_plt_section();
249 get_binary_plt_section();
256 /* Save the initial state */
257 initial_state_safety = xbt_new0(s_mc_global_t, 1);
258 initial_state_safety->snapshot = MC_take_snapshot();
269 void MC_modelcheck_liveness(){
271 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
277 /* Initialize statistics */
278 mc_stats_pair = xbt_new0(s_mc_stats_pair_t, 1);
280 /* Create exploration stack */
281 mc_stack_liveness = xbt_fifo_new();
283 initial_state_liveness = xbt_new0(s_mc_global_t, 1);
290 MC_print_statistics_pairs(mc_stats_pair);
307 int MC_random(int min, int max)
309 /*FIXME: return mc_current_state->executed_transition->random.value;*/
314 * \brief Schedules all the process that are ready to run
316 void MC_wait_for_requests(void)
318 smx_process_t process;
322 while (!xbt_dynar_is_empty(simix_global->process_to_run)) {
323 SIMIX_process_runall();
324 xbt_dynar_foreach(simix_global->process_that_ran, iter, process) {
325 req = &process->simcall;
326 if (req->call != SIMCALL_NONE && !MC_request_is_visible(req))
327 SIMIX_simcall_pre(req, 0);
332 int MC_deadlock_check()
334 int deadlock = FALSE;
335 smx_process_t process;
336 if(xbt_swag_size(simix_global->process_list)){
338 xbt_swag_foreach(process, simix_global->process_list){
339 if(process->simcall.call != SIMCALL_NONE
340 && MC_request_is_enabled(&process->simcall)){
350 * \brief Re-executes from the state at position start all the transitions indicated by
351 * a given model-checker stack.
352 * \param stack The stack with the transitions to execute.
353 * \param start Start index to begin the re-execution.
355 void MC_replay(xbt_fifo_t stack, int start)
357 int raw_mem = (mmalloc_get_current_heap() == raw_heap);
361 smx_simcall_t req = NULL, saved_req = NULL;
362 xbt_fifo_item_t item, start_item;
365 XBT_DEBUG("**** Begin Replay ****");
368 /* Restore the initial state */
369 MC_restore_snapshot(initial_state_safety->snapshot);
370 /* At the moment of taking the snapshot the raw heap was set, so restoring
371 * it will set it back again, we have to unset it to continue */
375 start_item = xbt_fifo_get_last_item(stack);
378 start_item = xbt_fifo_get_prev_item(start_item);
383 /* Traverse the stack from the state at position start and re-execute the transitions */
384 for (item = start_item;
385 item != xbt_fifo_get_first_item(stack);
386 item = xbt_fifo_get_prev_item(item)) {
388 state = (mc_state_t) xbt_fifo_get_item_content(item);
389 saved_req = MC_state_get_executed_request(state, &value);
392 /* because we got a copy of the executed request, we have to fetch the
393 real one, pointed by the request field of the issuer process */
394 req = &saved_req->issuer->simcall;
396 /* Debug information */
397 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
398 req_str = MC_request_to_string(req, value);
399 XBT_DEBUG("Replay: %s (%p)", req_str, state);
404 SIMIX_simcall_pre(req, value);
405 MC_wait_for_requests();
407 /* Update statistics */
408 mc_stats->visited_states++;
409 mc_stats->executed_transitions++;
411 XBT_DEBUG("**** End Replay ****");
421 void MC_replay_liveness(xbt_fifo_t stack, int all_stack)
424 initial_state_liveness->raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
428 smx_simcall_t req = NULL, saved_req = NULL;
429 xbt_fifo_item_t item;
431 mc_pair_stateless_t pair;
434 XBT_DEBUG("**** Begin Replay ****");
436 /* Restore the initial state */
437 MC_restore_snapshot(initial_state_liveness->snapshot);
439 /* At the moment of taking the snapshot the raw heap was set, so restoring
440 * it will set it back again, we have to unset it to continue */
441 if(!initial_state_liveness->raw_mem_set)
446 item = xbt_fifo_get_last_item(stack);
448 while(depth <= xbt_fifo_size(stack)){
450 pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item);
451 state = (mc_state_t) pair->graph_state;
453 if(pair->requests > 0){
455 saved_req = MC_state_get_executed_request(state, &value);
456 //XBT_DEBUG("SavedReq->call %u", saved_req->call);
458 if(saved_req != NULL){
459 /* because we got a copy of the executed request, we have to fetch the
460 real one, pointed by the request field of the issuer process */
461 req = &saved_req->issuer->simcall;
462 //XBT_DEBUG("Req->call %u", req->call);
464 /* Debug information */
465 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
466 req_str = MC_request_to_string(req, value);
467 XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
473 SIMIX_simcall_pre(req, value);
474 MC_wait_for_requests();
479 /* Update statistics */
480 mc_stats_pair->visited_pairs++;
482 item = xbt_fifo_get_prev_item(item);
487 /* Traverse the stack from the initial state and re-execute the transitions */
488 for (item = xbt_fifo_get_last_item(stack);
489 item != xbt_fifo_get_first_item(stack);
490 item = xbt_fifo_get_prev_item(item)) {
492 pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item);
493 state = (mc_state_t) pair->graph_state;
495 if(pair->requests > 0){
497 saved_req = MC_state_get_executed_request(state, &value);
498 //XBT_DEBUG("SavedReq->call %u", saved_req->call);
500 if(saved_req != NULL){
501 /* because we got a copy of the executed request, we have to fetch the
502 real one, pointed by the request field of the issuer process */
503 req = &saved_req->issuer->simcall;
504 //XBT_DEBUG("Req->call %u", req->call);
506 /* Debug information */
507 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
508 req_str = MC_request_to_string(req, value);
509 XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
515 SIMIX_simcall_pre(req, value);
516 MC_wait_for_requests();
521 /* Update statistics */
522 mc_stats_pair->visited_pairs++;
526 XBT_DEBUG("**** End Replay ****");
528 if(initial_state_liveness->raw_mem_set)
536 * \brief Dumps the contents of a model-checker's stack and shows the actual
538 * \param stack The stack to dump
540 void MC_dump_stack_safety(xbt_fifo_t stack)
543 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
545 MC_show_stack_safety(stack);
547 if(!_sg_mc_checkpoint){
552 while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL)
553 MC_state_delete(state);
566 void MC_show_stack_safety(xbt_fifo_t stack)
570 xbt_fifo_item_t item;
572 char *req_str = NULL;
574 for (item = xbt_fifo_get_last_item(stack);
575 (item ? (state = (mc_state_t) (xbt_fifo_get_item_content(item)))
576 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
577 req = MC_state_get_executed_request(state, &value);
579 req_str = MC_request_to_string(req, value);
580 XBT_INFO("%s", req_str);
586 void MC_show_deadlock(smx_simcall_t req)
588 /*char *req_str = NULL;*/
589 XBT_INFO("**************************");
590 XBT_INFO("*** DEAD-LOCK DETECTED ***");
591 XBT_INFO("**************************");
592 XBT_INFO("Locked request:");
593 /*req_str = MC_request_to_string(req);
594 XBT_INFO("%s", req_str);
596 XBT_INFO("Counter-example execution trace:");
597 MC_dump_stack_safety(mc_stack_safety);
601 void MC_show_stack_liveness(xbt_fifo_t stack){
603 mc_pair_stateless_t pair;
604 xbt_fifo_item_t item;
606 char *req_str = NULL;
608 for (item = xbt_fifo_get_last_item(stack);
609 (item ? (pair = (mc_pair_stateless_t) (xbt_fifo_get_item_content(item)))
610 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
611 req = MC_state_get_executed_request(pair->graph_state, &value);
613 if(pair->requests>0){
614 req_str = MC_request_to_string(req, value);
615 XBT_INFO("%s", req_str);
618 XBT_INFO("End of system requests but evolution in Büchi automaton");
624 void MC_dump_stack_liveness(xbt_fifo_t stack){
626 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
628 mc_pair_stateless_t pair;
631 while ((pair = (mc_pair_stateless_t) xbt_fifo_pop(stack)) != NULL)
632 pair_stateless_free(pair);
641 void MC_print_statistics(mc_stats_t stats)
643 //XBT_INFO("State space size ~= %lu", stats->state_size);
644 XBT_INFO("Expanded states = %lu", stats->expanded_states);
645 XBT_INFO("Visited states = %lu", stats->visited_states);
646 XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
647 XBT_INFO("Expanded / Visited = %lf",
648 (double) stats->visited_states / stats->expanded_states);
649 /*XBT_INFO("Exploration coverage = %lf",
650 (double)stats->expanded_states / stats->state_size); */
653 void MC_print_statistics_pairs(mc_stats_pair_t stats)
655 XBT_INFO("Expanded pairs = %lu", stats->expanded_pairs);
656 XBT_INFO("Visited pairs = %lu", stats->visited_pairs);
657 //XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
658 XBT_INFO("Expanded / Visited = %lf",
659 (double) stats->visited_pairs / stats->expanded_pairs);
661 if(mmalloc_get_current_heap() == raw_heap)
665 void MC_assert(int prop)
667 if (MC_is_active() && !prop){
668 XBT_INFO("**************************");
669 XBT_INFO("*** PROPERTY NOT VALID ***");
670 XBT_INFO("**************************");
671 XBT_INFO("Counter-example execution trace:");
672 MC_dump_stack_safety(mc_stack_safety);
673 MC_print_statistics(mc_stats);
678 static void MC_assert_pair(int prop){
679 if (MC_is_active() && !prop) {
680 XBT_INFO("**************************");
681 XBT_INFO("*** PROPERTY NOT VALID ***");
682 XBT_INFO("**************************");
683 //XBT_INFO("Counter-example execution trace:");
684 MC_show_stack_liveness(mc_stack_liveness);
685 //MC_dump_snapshot_stack(mc_snapshot_stack);
686 MC_print_statistics_pairs(mc_stats_pair);
691 void MC_process_clock_add(smx_process_t process, double amount)
693 mc_time[process->pid] += amount;
696 double MC_process_clock_get(smx_process_t process)
700 return mc_time[process->pid];
708 void MC_automaton_load(const char *file){
710 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
714 if (_mc_property_automaton == NULL)
715 _mc_property_automaton = xbt_automaton_new();
717 xbt_automaton_load(_mc_property_automaton,file);
726 void MC_automaton_new_propositional_symbol(const char* id, void* fct) {
728 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
732 if (_mc_property_automaton == NULL)
733 _mc_property_automaton = xbt_automaton_new();
735 xbt_new_propositional_symbol(_mc_property_automaton,id,fct);
744 /************ MC_ignore ***********/
746 void heap_ignore_region_free(mc_heap_ignore_region_t r){
751 void heap_ignore_region_free_voidp(void *r){
752 heap_ignore_region_free((mc_heap_ignore_region_t) * (void **) r);
755 void MC_ignore_heap(void *address, size_t size){
757 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
761 if(mc_heap_comparison_ignore == NULL)
762 mc_heap_comparison_ignore = xbt_dynar_new(sizeof(mc_heap_ignore_region_t), heap_ignore_region_free_voidp);
764 mc_heap_ignore_region_t region = NULL;
765 region = xbt_new0(s_mc_heap_ignore_region_t, 1);
766 region->address = address;
769 region->block = ((char*)address - (char*)((xbt_mheap_t)std_heap)->heapbase) / BLOCKSIZE + 1;
771 if(((xbt_mheap_t)std_heap)->heapinfo[region->block].type == 0){
772 region->fragment = -1;
773 ((xbt_mheap_t)std_heap)->heapinfo[region->block].busy_block.ignore = 1;
775 region->fragment = ((uintptr_t) (ADDR2UINT (address) % (BLOCKSIZE))) >> ((xbt_mheap_t)std_heap)->heapinfo[region->block].type;
776 ((xbt_mheap_t)std_heap)->heapinfo[region->block].busy_frag.ignore[region->fragment] = 1;
779 unsigned int cursor = 0;
780 mc_heap_ignore_region_t current_region;
781 xbt_dynar_foreach(mc_heap_comparison_ignore, cursor, current_region){
782 if(current_region->address > address)
786 xbt_dynar_insert_at(mc_heap_comparison_ignore, cursor, ®ion);
794 void MC_remove_ignore_heap(void *address, size_t size){
796 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
800 unsigned int cursor = 0;
802 int end = xbt_dynar_length(mc_heap_comparison_ignore) - 1;
803 mc_heap_ignore_region_t region;
804 int ignore_found = 0;
807 cursor = (start + end) / 2;
808 region = (mc_heap_ignore_region_t)xbt_dynar_get_as(mc_heap_comparison_ignore, cursor, mc_heap_ignore_region_t);
809 if(region->address == address){
813 if(region->address < address)
815 if(region->address > address){
816 if((char * )region->address <= ((char *)address + size)){
824 if(ignore_found == 1){
825 xbt_dynar_remove_at(mc_heap_comparison_ignore, cursor, NULL);
826 MC_remove_ignore_heap(address, size);
836 void MC_ignore_data_bss(void *address, size_t size){
838 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
842 if(mc_data_bss_comparison_ignore == NULL)
843 mc_data_bss_comparison_ignore = xbt_dynar_new(sizeof(mc_data_bss_ignore_variable_t), NULL);
845 mc_data_bss_ignore_variable_t var = NULL;
846 var = xbt_new0(s_mc_data_bss_ignore_variable_t, 1);
847 var->address = address;
850 if(xbt_dynar_is_empty(mc_data_bss_comparison_ignore)){
852 xbt_dynar_insert_at(mc_data_bss_comparison_ignore, 0, &var);
856 unsigned int cursor = 0;
858 int end = xbt_dynar_length(mc_data_bss_comparison_ignore) - 1;
859 mc_data_bss_ignore_variable_t current_var = NULL;
862 cursor = (start + end) / 2;
863 current_var = (mc_data_bss_ignore_variable_t)xbt_dynar_get_as(mc_data_bss_comparison_ignore, cursor, mc_data_bss_ignore_variable_t);
864 if(current_var->address == address){
870 if(current_var->address < address)
872 if(current_var->address > address)
876 if(current_var->address < address)
877 xbt_dynar_insert_at(mc_data_bss_comparison_ignore, cursor + 1, &var);
879 xbt_dynar_insert_at(mc_data_bss_comparison_ignore, cursor, &var);
883 /* Remove variable from mc_global_variables */
885 if(mc_global_variables != NULL){
887 unsigned int cursor = 0;
889 int end = xbt_dynar_length(mc_global_variables) - 1;
890 global_variable_t current_var;
894 cursor = (start + end) / 2;
895 current_var = (global_variable_t)xbt_dynar_get_as(mc_global_variables, cursor, global_variable_t);
896 if(current_var->address == var->address){
900 if(current_var->address < address)
902 if(current_var->address > address)
907 xbt_dynar_remove_at(mc_global_variables, cursor, NULL);
917 static size_t data_bss_ignore_size(void *address){
918 unsigned int cursor = 0;
920 int end = xbt_dynar_length(mc_data_bss_comparison_ignore) - 1;
921 mc_data_bss_ignore_variable_t var;
924 cursor = (start + end) / 2;
925 var = (mc_data_bss_ignore_variable_t)xbt_dynar_get_as(mc_data_bss_comparison_ignore, cursor, mc_data_bss_ignore_variable_t);
926 if(var->address == address)
928 if(var->address < address){
929 if((void *)((char *)var->address + var->size) > address)
930 return (char *)var->address + var->size - (char*)address;
934 if(var->address > address)
943 void MC_ignore_stack(const char *var_name, const char *frame){
945 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
949 if(mc_stack_comparison_ignore == NULL)
950 mc_stack_comparison_ignore = xbt_dynar_new(sizeof(mc_stack_ignore_variable_t), NULL);
952 if(xbt_dynar_is_empty(mc_stack_comparison_ignore)){
954 mc_stack_ignore_variable_t var = NULL;
955 var = xbt_new0(s_mc_stack_ignore_variable_t, 1);
956 var->var_name = strdup(var_name);
957 var->frame = strdup(frame);
959 xbt_dynar_insert_at(mc_stack_comparison_ignore, 0, &var);
963 unsigned int cursor = 0;
965 int end = xbt_dynar_length(mc_stack_comparison_ignore) - 1;
966 mc_stack_ignore_variable_t current_var = NULL;
969 cursor = (start + end) / 2;
970 current_var = (mc_stack_ignore_variable_t)xbt_dynar_get_as(mc_stack_comparison_ignore, cursor, mc_stack_ignore_variable_t);
971 if(strcmp(current_var->frame, frame) == 0){
972 if(strcmp(current_var->var_name, var_name) == 0){
978 if(strcmp(current_var->var_name, var_name) < 0)
980 if(strcmp(current_var->var_name, var_name) > 0)
983 if(strcmp(current_var->frame, frame) < 0)
985 if(strcmp(current_var->frame, frame) > 0)
989 mc_stack_ignore_variable_t var = NULL;
990 var = xbt_new0(s_mc_stack_ignore_variable_t, 1);
991 var->var_name = strdup(var_name);
992 var->frame = strdup(frame);
994 if(strcmp(current_var->frame, frame) < 0)
995 xbt_dynar_insert_at(mc_stack_comparison_ignore, cursor + 1, &var);
997 xbt_dynar_insert_at(mc_stack_comparison_ignore, cursor, &var);
1008 void MC_new_stack_area(void *stack, char *name, void* context, size_t size){
1010 int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
1013 if(stacks_areas == NULL)
1014 stacks_areas = xbt_dynar_new(sizeof(stack_region_t), NULL);
1016 stack_region_t region = NULL;
1017 region = xbt_new0(s_stack_region_t, 1);
1018 region->address = stack;
1019 region->process_name = strdup(name);
1020 region->context = context;
1021 region->size = size;
1022 region->block = ((char*)stack - (char*)((xbt_mheap_t)std_heap)->heapbase) / BLOCKSIZE + 1;
1023 xbt_dynar_push(stacks_areas, ®ion);
1031 /************ DWARF ***********/
1033 xbt_dict_t MC_get_location_list(const char *elf_file){
1035 char *command = bprintf("objdump -Wo %s", elf_file);
1037 FILE *fp = popen(command, "r");
1040 perror("popen for objdump failed");
1044 int debug = 0; /*Detect if the program has been compiled with -g */
1046 xbt_dict_t location_list = xbt_dict_new_homogeneous(NULL);
1047 char *line = NULL, *loc_expr = NULL;
1051 xbt_dynar_t split = NULL;
1053 while ((read = getline(&line, &n, fp)) != -1) {
1055 /* Wipeout the new line character */
1056 line[read - 1] = '\0';
1058 xbt_str_trim(line, NULL);
1063 if(strlen(line) == 0)
1068 if(strncmp(line, elf_file, strlen(elf_file)) == 0)
1071 if(strncmp(line, "Contents", 8) == 0)
1074 if(strncmp(line, "Offset", 6) == 0){
1081 XBT_INFO("Your program must be compiled with -g");
1085 xbt_dynar_t loclist = xbt_dynar_new(sizeof(dw_location_entry_t), NULL);
1087 xbt_str_strip_spaces(line);
1088 split = xbt_str_split(line, " ");
1090 while(read != -1 && strcmp("<End", (char *)xbt_dynar_get_as(split, 1, char *)) != 0){
1092 dw_location_entry_t new_entry = xbt_new0(s_dw_location_entry_t, 1);
1093 new_entry->lowpc = strtoul((char *)xbt_dynar_get_as(split, 1, char *), NULL, 16);
1094 new_entry->highpc = strtoul((char *)xbt_dynar_get_as(split, 2, char *), NULL, 16);
1097 while(cursor_remove < 3){
1098 xbt_dynar_remove_at(split, 0, NULL);
1102 loc_expr = xbt_str_join(split, " ");
1103 xbt_str_ltrim(loc_expr, "(");
1104 xbt_str_rtrim(loc_expr, ")");
1105 new_entry->location = get_location(NULL, loc_expr);
1107 xbt_dynar_push(loclist, &new_entry);
1109 xbt_dynar_free(&split);
1112 read = getline(&line, &n, fp);
1114 line[read - 1] = '\0';
1115 xbt_str_strip_spaces(line);
1116 split = xbt_str_split(line, " ");
1122 char *key = bprintf("%d", (int)strtoul((char *)xbt_dynar_get_as(split, 0, char *), NULL, 16));
1123 xbt_dict_set(location_list, key, loclist, NULL);
1126 xbt_dynar_free(&split);
1134 return location_list;
1137 static dw_frame_t get_frame_by_offset(xbt_dict_t all_variables, unsigned long int offset){
1139 xbt_dict_cursor_t cursor = NULL;
1143 xbt_dict_foreach(all_variables, cursor, name, res) {
1144 if(offset >= res->start && offset < res->end){
1145 xbt_dict_cursor_free(&cursor);
1150 xbt_dict_cursor_free(&cursor);
1155 void MC_get_local_variables(const char *elf_file, xbt_dict_t location_list, xbt_dict_t *all_variables){
1157 char *command = bprintf("objdump -Wi %s", elf_file);
1159 FILE *fp = popen(command, "r");
1162 perror("popen for objdump failed");
1164 char *line = NULL, *origin, *abstract_origin, *current_frame = NULL;
1167 int valid_variable = 1;
1168 char *node_type = NULL, *location_type = NULL, *variable_name = NULL, *loc_expr = NULL;
1169 xbt_dynar_t split = NULL, split2 = NULL;
1171 xbt_dict_t variables_origin = xbt_dict_new_homogeneous(NULL);
1172 xbt_dict_t subprograms_origin = xbt_dict_new_homogeneous(NULL);
1173 char *subprogram_name = NULL, *subprogram_start = NULL, *subprogram_end = NULL;
1174 int new_frame = 0, new_variable = 0;
1175 dw_frame_t variable_frame, subroutine_frame = NULL;
1177 read = getline(&line, &n, fp);
1179 while (read != -1) {
1182 read = getline(&line, &n, fp);
1186 /* Wipeout the new line character */
1187 line[read - 1] = '\0';
1189 if(strlen(line) == 0){
1190 read = getline(&line, &n, fp);
1194 xbt_str_ltrim(line, NULL);
1195 xbt_str_strip_spaces(line);
1198 read = getline(&line, &n, fp);
1202 xbt_dynar_free(&split);
1203 split = xbt_str_split(line, " ");
1206 node_type = xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *);
1208 if(strcmp(node_type, "(DW_TAG_subprogram)") == 0){ /* New frame */
1210 dw_frame_t frame = NULL;
1212 strtok(xbt_dynar_get_as(split, 0, char *), "<");
1213 subprogram_start = strdup(strtok(NULL, "<"));
1214 xbt_str_rtrim(subprogram_start, ">:");
1216 read = getline(&line, &n, fp);
1221 read = getline(&line, &n, fp);
1225 /* Wipeout the new line character */
1226 line[read - 1] = '\0';
1228 if(strlen(line) == 0){
1229 read = getline(&line, &n, fp);
1233 xbt_dynar_free(&split);
1234 xbt_str_rtrim(line, NULL);
1235 xbt_str_strip_spaces(line);
1236 split = xbt_str_split(line, " ");
1238 node_type = xbt_dynar_get_as(split, 1, char *);
1240 if(strncmp(node_type, "DW_AT_", 6) != 0)
1243 if(strcmp(node_type, "DW_AT_sibling") == 0){
1245 subprogram_end = strdup(xbt_dynar_get_as(split, 3, char*));
1246 xbt_str_ltrim(subprogram_end, "<0x");
1247 xbt_str_rtrim(subprogram_end, ">");
1249 }else if(strcmp(node_type, "DW_AT_abstract_origin:") == 0){ /* Frame already in dict */
1252 abstract_origin = strdup(xbt_dynar_get_as(split, 2, char*));
1253 xbt_str_ltrim(abstract_origin, "<0x");
1254 xbt_str_rtrim(abstract_origin, ">");
1255 subprogram_name = (char *)xbt_dict_get_or_null(subprograms_origin, abstract_origin);
1256 frame = xbt_dict_get_or_null(*all_variables, subprogram_name);
1257 xbt_free(abstract_origin);
1259 }else if(strcmp(node_type, "DW_AT_name") == 0){
1262 xbt_free(current_frame);
1263 frame = xbt_new0(s_dw_frame_t, 1);
1264 frame->name = strdup(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *));
1265 frame->variables = xbt_dict_new_homogeneous(NULL);
1266 frame->frame_base = xbt_new0(s_dw_location_t, 1);
1267 current_frame = strdup(frame->name);
1269 xbt_dict_set(subprograms_origin, subprogram_start, frame->name, NULL);
1271 }else if(strcmp(node_type, "DW_AT_frame_base") == 0){
1273 location_type = xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *);
1275 if(strcmp(location_type, "list)") == 0){ /* Search location in location list */
1277 frame->frame_base = get_location(location_list, xbt_dynar_get_as(split, 3, char *));
1281 xbt_str_strip_spaces(line);
1282 split2 = xbt_str_split(line, "(");
1283 xbt_dynar_remove_at(split2, 0, NULL);
1284 loc_expr = xbt_str_join(split2, " ");
1285 xbt_str_rtrim(loc_expr, ")");
1286 frame->frame_base = get_location(NULL, loc_expr);
1287 xbt_dynar_free(&split2);
1292 }else if(strcmp(node_type, "DW_AT_low_pc") == 0){
1295 frame->low_pc = (void *)strtoul(xbt_dynar_get_as(split, 3, char *), NULL, 16);
1297 }else if(strcmp(node_type, "DW_AT_high_pc") == 0){
1300 frame->high_pc = (void *)strtoul(xbt_dynar_get_as(split, 3, char *), NULL, 16);
1302 }else if(strcmp(node_type, "DW_AT_MIPS_linkage_name:") == 0){
1304 xbt_free(frame->name);
1305 xbt_free(current_frame);
1306 frame->name = strdup(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *));
1307 current_frame = strdup(frame->name);
1308 xbt_dict_set(subprograms_origin, subprogram_start, frame->name, NULL);
1312 read = getline(&line, &n, fp);
1317 frame->start = strtoul(subprogram_start, NULL, 16);
1318 if(subprogram_end != NULL)
1319 frame->end = strtoul(subprogram_end, NULL, 16);
1320 xbt_dict_set(*all_variables, frame->name, frame, NULL);
1323 xbt_free(subprogram_start);
1324 if(subprogram_end != NULL){
1325 xbt_free(subprogram_end);
1326 subprogram_end = NULL;
1330 }else if(strcmp(node_type, "(DW_TAG_variable)") == 0){ /* New variable */
1332 dw_local_variable_t var = NULL;
1334 strtok(xbt_dynar_get_as(split, 0, char *), "<");
1335 origin = strdup(strtok(NULL, "<"));
1336 xbt_str_rtrim(origin, ">:");
1338 read = getline(&line, &n, fp);
1343 read = getline(&line, &n, fp);
1347 /* Wipeout the new line character */
1348 line[read - 1] = '\0';
1350 if(strlen(line) == 0){
1351 read = getline(&line, &n, fp);
1355 xbt_dynar_free(&split);
1356 xbt_str_rtrim(line, NULL);
1357 xbt_str_strip_spaces(line);
1358 split = xbt_str_split(line, " ");
1360 node_type = xbt_dynar_get_as(split, 1, char *);
1362 if(strncmp(node_type, "DW_AT_", 6) != 0)
1365 if(strcmp(node_type, "DW_AT_name") == 0){
1368 var = xbt_new0(s_dw_local_variable_t, 1);
1369 var->name = strdup(xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *));
1371 xbt_dict_set(variables_origin, origin, var->name, NULL);
1373 }else if(strcmp(node_type, "DW_AT_abstract_origin:") == 0){
1376 abstract_origin = xbt_dynar_get_as(split, 2, char *);
1377 xbt_str_ltrim(abstract_origin, "<0x");
1378 xbt_str_rtrim(abstract_origin, ">");
1380 variable_name = (char *)xbt_dict_get_or_null(variables_origin, abstract_origin);
1381 variable_frame = get_frame_by_offset(*all_variables, strtoul(abstract_origin, NULL, 16));
1382 var = xbt_dict_get_or_null(variable_frame->variables, variable_name);
1384 }else if(strcmp(node_type, "DW_AT_location") == 0){
1386 if(valid_variable == 1 && var != NULL){
1388 var->location = xbt_new0(s_dw_location_t, 1);
1390 location_type = xbt_dynar_get_as(split, xbt_dynar_length(split) - 1, char *);
1392 if(strcmp(location_type, "list)") == 0){ /* Search location in location list */
1394 var->location = get_location(location_list, xbt_dynar_get_as(split, 3, char *));
1398 xbt_str_strip_spaces(line);
1399 split2 = xbt_str_split(line, "(");
1400 xbt_dynar_remove_at(split2, 0, NULL);
1401 loc_expr = xbt_str_join(split2, " ");
1402 xbt_str_rtrim(loc_expr, ")");
1403 var->location = get_location(NULL, loc_expr);
1404 xbt_dynar_free(&split2);
1411 }else if(strcmp(node_type, "DW_AT_external") == 0){
1417 read = getline(&line, &n, fp);
1421 if(new_variable == 1 && valid_variable == 1){
1423 variable_frame = xbt_dict_get_or_null(*all_variables, current_frame);
1424 xbt_dict_set(variable_frame->variables, var->name, var, NULL);
1430 }else if(strcmp(node_type, "(DW_TAG_inlined_subroutine)") == 0){
1432 strtok(xbt_dynar_get_as(split, 0, char *), "<");
1433 origin = strdup(strtok(NULL, "<"));
1434 xbt_str_rtrim(origin, ">:");
1436 read = getline(&line, &n, fp);
1440 /* Wipeout the new line character */
1441 line[read - 1] = '\0';
1444 read = getline(&line, &n, fp);
1448 if(strlen(line) == 0){
1449 read = getline(&line, &n, fp);
1453 xbt_dynar_free(&split);
1454 xbt_str_rtrim(line, NULL);
1455 xbt_str_strip_spaces(line);
1456 split = xbt_str_split(line, " ");
1458 if(strncmp(xbt_dynar_get_as(split, 1, char *), "DW_AT_", 6) != 0)
1461 node_type = xbt_dynar_get_as(split, 1, char *);
1463 if(strcmp(node_type, "DW_AT_abstract_origin:") == 0){
1465 origin = xbt_dynar_get_as(split, 2, char *);
1466 xbt_str_ltrim(origin, "<0x");
1467 xbt_str_rtrim(origin, ">");
1469 subprogram_name = (char *)xbt_dict_get_or_null(subprograms_origin, origin);
1470 subroutine_frame = xbt_dict_get_or_null(*all_variables, subprogram_name);
1472 }else if(strcmp(node_type, "DW_AT_low_pc") == 0){
1474 subroutine_frame->low_pc = (void *)strtoul(xbt_dynar_get_as(split, 3, char *), NULL, 16);
1476 }else if(strcmp(node_type, "DW_AT_high_pc") == 0){
1478 subroutine_frame->high_pc = (void *)strtoul(xbt_dynar_get_as(split, 3, char *), NULL, 16);
1481 read = getline(&line, &n, fp);
1487 read = getline(&line, &n, fp);
1493 xbt_dynar_free(&split);
1500 static dw_location_t get_location(xbt_dict_t location_list, char *expr){
1502 dw_location_t loc = xbt_new0(s_dw_location_t, 1);
1504 if(location_list != NULL){
1506 char *key = bprintf("%d", (int)strtoul(expr, NULL, 16));
1507 loc->type = e_dw_loclist;
1508 loc->location.loclist = (xbt_dynar_t)xbt_dict_get_or_null(location_list, key);
1509 if(loc->location.loclist == NULL)
1510 XBT_INFO("Key not found in loclist");
1517 char *tok = NULL, *tok2 = NULL;
1519 xbt_dynar_t tokens1 = xbt_str_split(expr, ";");
1520 xbt_dynar_t tokens2;
1522 loc->type = e_dw_compose;
1523 loc->location.compose = xbt_dynar_new(sizeof(dw_location_t), NULL);
1525 while(cursor < xbt_dynar_length(tokens1)){
1527 tok = xbt_dynar_get_as(tokens1, cursor, char*);
1528 tokens2 = xbt_str_split(tok, " ");
1529 tok2 = xbt_dynar_get_as(tokens2, 0, char*);
1531 if(strncmp(tok2, "DW_OP_reg", 9) == 0){
1532 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1533 new_element->type = e_dw_register;
1534 new_element->location.reg = atoi(strtok(tok2, "DW_OP_reg"));
1535 xbt_dynar_push(loc->location.compose, &new_element);
1536 }else if(strcmp(tok2, "DW_OP_fbreg:") == 0){
1537 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1538 new_element->type = e_dw_fbregister_op;
1539 new_element->location.fbreg_op = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*));
1540 xbt_dynar_push(loc->location.compose, &new_element);
1541 }else if(strncmp(tok2, "DW_OP_breg", 10) == 0){
1542 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1543 new_element->type = e_dw_bregister_op;
1544 new_element->location.breg_op.reg = atoi(strtok(tok2, "DW_OP_breg"));
1545 new_element->location.breg_op.offset = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*));
1546 xbt_dynar_push(loc->location.compose, &new_element);
1547 }else if(strncmp(tok2, "DW_OP_lit", 9) == 0){
1548 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1549 new_element->type = e_dw_lit;
1550 new_element->location.lit = atoi(strtok(tok2, "DW_OP_lit"));
1551 xbt_dynar_push(loc->location.compose, &new_element);
1552 }else if(strcmp(tok2, "DW_OP_piece:") == 0){
1553 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1554 new_element->type = e_dw_piece;
1555 new_element->location.piece = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*));
1556 /*if(strlen(xbt_dynar_get_as(tokens2, 1, char*)) > 1)
1557 new_element->location.piece = atoi(xbt_dynar_get_as(tokens2, 1, char*));
1559 new_element->location.piece = xbt_dynar_get_as(tokens2, 1, char*)[0] - '0';*/
1560 xbt_dynar_push(loc->location.compose, &new_element);
1561 }else if(strcmp(tok2, "DW_OP_plus_uconst:") == 0){
1562 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1563 new_element->type = e_dw_plus_uconst;
1564 new_element->location.plus_uconst = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char *));
1565 xbt_dynar_push(loc->location.compose, &new_element);
1566 }else if(strcmp(tok, "DW_OP_abs") == 0 ||
1567 strcmp(tok, "DW_OP_and") == 0 ||
1568 strcmp(tok, "DW_OP_div") == 0 ||
1569 strcmp(tok, "DW_OP_minus") == 0 ||
1570 strcmp(tok, "DW_OP_mod") == 0 ||
1571 strcmp(tok, "DW_OP_mul") == 0 ||
1572 strcmp(tok, "DW_OP_neg") == 0 ||
1573 strcmp(tok, "DW_OP_not") == 0 ||
1574 strcmp(tok, "DW_OP_or") == 0 ||
1575 strcmp(tok, "DW_OP_plus") == 0){
1576 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1577 new_element->type = e_dw_arithmetic;
1578 new_element->location.arithmetic = strdup(strtok(tok2, "DW_OP_"));
1579 xbt_dynar_push(loc->location.compose, &new_element);
1580 }else if(strcmp(tok, "DW_OP_stack_value") == 0){
1581 }else if(strcmp(tok2, "DW_OP_deref_size:") == 0){
1582 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1583 new_element->type = e_dw_deref;
1584 new_element->location.deref_size = (unsigned int short) atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*));
1585 /*if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
1586 new_element->location.deref_size = atoi(xbt_dynar_get_as(tokens, cursor, char*));
1588 new_element->location.deref_size = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';*/
1589 xbt_dynar_push(loc->location.compose, &new_element);
1590 }else if(strcmp(tok, "DW_OP_deref") == 0){
1591 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1592 new_element->type = e_dw_deref;
1593 new_element->location.deref_size = sizeof(void *);
1594 xbt_dynar_push(loc->location.compose, &new_element);
1595 }else if(strcmp(tok2, "DW_OP_constu:") == 0){
1596 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1597 new_element->type = e_dw_uconstant;
1598 new_element->location.uconstant.bytes = 1;
1599 new_element->location.uconstant.value = (unsigned long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)));
1600 /*if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
1601 new_element->location.uconstant.value = (unsigned long int)(atoi(xbt_dynar_get_as(tokens, cursor, char*)));
1603 new_element->location.uconstant.value = (unsigned long int)(xbt_dynar_get_as(tokens, cursor, char*)[0] - '0');*/
1604 xbt_dynar_push(loc->location.compose, &new_element);
1605 }else if(strcmp(tok2, "DW_OP_consts:") == 0){
1606 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1607 new_element->type = e_dw_sconstant;
1608 new_element->location.sconstant.bytes = 1;
1609 new_element->location.sconstant.value = (long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)));
1610 xbt_dynar_push(loc->location.compose, &new_element);
1611 }else if(strcmp(tok2, "DW_OP_const1u:") == 0 ||
1612 strcmp(tok2, "DW_OP_const2u:") == 0 ||
1613 strcmp(tok2, "DW_OP_const4u:") == 0 ||
1614 strcmp(tok2, "DW_OP_const8u:") == 0){
1615 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1616 new_element->type = e_dw_uconstant;
1617 new_element->location.uconstant.bytes = tok2[11] - '0';
1618 new_element->location.uconstant.value = (unsigned long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)));
1619 /*if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
1620 new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, cursor, char*));
1622 new_element->location.constant.value = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';*/
1623 xbt_dynar_push(loc->location.compose, &new_element);
1624 }else if(strcmp(tok, "DW_OP_const1s") == 0 ||
1625 strcmp(tok, "DW_OP_const2s") == 0 ||
1626 strcmp(tok, "DW_OP_const4s") == 0 ||
1627 strcmp(tok, "DW_OP_const8s") == 0){
1628 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1629 new_element->type = e_dw_sconstant;
1630 new_element->location.sconstant.bytes = tok2[11] - '0';
1631 new_element->location.sconstant.value = (long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)));
1632 xbt_dynar_push(loc->location.compose, &new_element);
1634 dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
1635 new_element->type = e_dw_unsupported;
1636 xbt_dynar_push(loc->location.compose, &new_element);
1640 xbt_dynar_free(&tokens2);
1644 xbt_dynar_free(&tokens1);
1653 void print_local_variables(xbt_dict_t list){
1655 dw_location_entry_t entry;
1656 dw_location_t location_entry;
1657 unsigned int cursor3 = 0, cursor4 = 0;
1658 xbt_dict_cursor_t cursor = 0, cursor2 = 0;
1660 char *frame_name, *variable_name;
1661 dw_frame_t current_frame;
1662 dw_local_variable_t current_variable;
1664 xbt_dict_foreach(list, cursor, frame_name, current_frame){
1665 fprintf(stderr, "Frame name : %s\n", current_frame->name);
1666 fprintf(stderr, "Location type : %d\n", current_frame->frame_base->type);
1667 xbt_dict_foreach((xbt_dict_t)current_frame->variables, cursor2, variable_name, current_variable){
1668 fprintf(stderr, "Name : %s\n", current_variable->name);
1669 if(current_variable->location == NULL)
1671 fprintf(stderr, "Location type : %d\n", current_variable->location->type);
1672 switch(current_variable->location->type){
1674 xbt_dynar_foreach(current_variable->location->location.loclist, cursor3, entry){
1675 fprintf(stderr, "Lowpc : %lx, Highpc : %lx,", entry->lowpc, entry->highpc);
1676 switch(entry->location->type){
1677 case e_dw_register :
1678 fprintf(stderr, " Location : in register %d\n", entry->location->location.reg);
1680 case e_dw_bregister_op:
1681 fprintf(stderr, " Location : Add %d to the value in register %d\n", entry->location->location.breg_op.offset, entry->location->location.breg_op.reg);
1684 fprintf(stderr, "Value already kwnown : %d\n", entry->location->location.lit);
1686 case e_dw_fbregister_op:
1687 fprintf(stderr, " Location : %d bytes from logical frame pointer\n", entry->location->location.fbreg_op);
1690 fprintf(stderr, " Location :\n");
1691 xbt_dynar_foreach(entry->location->location.compose, cursor4, location_entry){
1692 switch(location_entry->type){
1693 case e_dw_register :
1694 fprintf(stderr, " %d) in register %d\n", cursor4 + 1, location_entry->location.reg);
1696 case e_dw_bregister_op:
1697 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);
1700 fprintf(stderr, "%d) Value already kwnown : %d\n", cursor4 + 1, location_entry->location.lit);
1702 case e_dw_fbregister_op:
1703 fprintf(stderr, " %d) %d bytes from logical frame pointer\n", cursor4 + 1, location_entry->location.fbreg_op);
1706 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);
1708 case e_dw_arithmetic :
1709 fprintf(stderr, "%d) arithmetic operation : %s\n", cursor4 + 1, location_entry->location.arithmetic);
1712 fprintf(stderr, "%d) The %d byte(s) previous value\n", cursor4 + 1, location_entry->location.piece);
1714 case e_dw_uconstant :
1715 fprintf(stderr, "%d) Unsigned constant %lu\n", cursor4 + 1, location_entry->location.uconstant.value);
1717 case e_dw_sconstant :
1718 fprintf(stderr, "%d) Signed constant %lu\n", cursor4 + 1, location_entry->location.sconstant.value);
1721 fprintf(stderr, "%d) Location type not supported\n", cursor4 + 1);
1727 fprintf(stderr, "Location type not supported\n");
1734 fprintf(stderr, "Location :\n");
1735 xbt_dynar_foreach(current_variable->location->location.compose, cursor4, location_entry){
1736 switch(location_entry->type){
1737 case e_dw_register :
1738 fprintf(stderr, " %d) in register %d\n", cursor4 + 1, location_entry->location.reg);
1740 case e_dw_bregister_op:
1741 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);
1744 fprintf(stderr, "%d) Value already kwnown : %d\n", cursor4 + 1, location_entry->location.lit);
1746 case e_dw_fbregister_op:
1747 fprintf(stderr, " %d) %d bytes from logical frame pointer\n", cursor4 + 1, location_entry->location.fbreg_op);
1750 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);
1752 case e_dw_arithmetic :
1753 fprintf(stderr, "%d) arithmetic operation : %s\n", cursor4 + 1, location_entry->location.arithmetic);
1756 fprintf(stderr, "%d) The %d byte(s) previous value\n", cursor4 + 1, location_entry->location.piece);
1758 case e_dw_uconstant :
1759 fprintf(stderr, "%d) Unsigned constant %lu\n", cursor4 + 1, location_entry->location.uconstant.value);
1761 case e_dw_sconstant :
1762 fprintf(stderr, "%d) Signed constant %lu\n", cursor4 + 1, location_entry->location.sconstant.value);
1765 fprintf(stderr, "%d) Location type not supported\n", cursor4 + 1);
1771 fprintf(stderr, "Location type not supported\n");
1779 static void MC_get_global_variables(char *elf_file){
1783 char *command = bprintf("objdump -t -j .data -j .bss %s", elf_file);
1785 fp = popen(command, "r");
1788 perror("popen failed");
1792 if(mc_global_variables == NULL)
1793 mc_global_variables = xbt_dynar_new(sizeof(global_variable_t), global_variable_free_voidp);
1799 xbt_dynar_t line_tokens = NULL;
1800 unsigned long offset;
1802 int type = strcmp(elf_file, xbt_binary_name); /* 0 = binary, other = libsimgrid */
1804 while ((read = getline(&line, &n, fp)) != -1){
1809 /* Wipeout the new line character */
1810 line[read - 1] = '\0';
1812 xbt_str_strip_spaces(line);
1813 xbt_str_ltrim(line, NULL);
1815 line_tokens = xbt_str_split(line, NULL);
1817 if(xbt_dynar_length(line_tokens) <= 4 || strcmp(xbt_dynar_get_as(line_tokens, 0, char *), "SYMBOL") == 0)
1820 if((strncmp(xbt_dynar_get_as(line_tokens, xbt_dynar_length(line_tokens) - 1, char*), "__gcov", 6) == 0)
1821 || (strncmp(xbt_dynar_get_as(line_tokens, xbt_dynar_length(line_tokens) - 1, char*), "gcov", 4) == 0)
1822 || (strcmp(xbt_dynar_get_as(line_tokens, xbt_dynar_length(line_tokens) - 1, char*), ".data") == 0)
1823 || (strcmp(xbt_dynar_get_as(line_tokens, xbt_dynar_length(line_tokens) - 1, char*), ".bss") == 0)
1824 || (strncmp(xbt_dynar_get_as(line_tokens, xbt_dynar_length(line_tokens) - 1, char*), "stderr", 6) == 0)
1825 || ((size_t)strtoul(xbt_dynar_get_as(line_tokens, xbt_dynar_length(line_tokens) - 2, char*), NULL, 16) == 0))
1828 global_variable_t var = xbt_new0(s_global_variable_t, 1);
1831 var->address = (void *)strtoul(xbt_dynar_get_as(line_tokens, 0, char*), NULL, 16);
1833 offset = strtoul(xbt_dynar_get_as(line_tokens, 0, char*), NULL, 16);
1834 var->address = (char *)start_text_libsimgrid+offset;
1837 var->size = (size_t)strtoul(xbt_dynar_get_as(line_tokens, xbt_dynar_length(line_tokens) - 2, char*), NULL, 16);
1838 var->name = strdup(xbt_dynar_get_as(line_tokens, xbt_dynar_length(line_tokens) - 1, char*));
1840 if(data_bss_ignore_size(var->address) > 0){
1841 global_variable_free(var);
1843 if(xbt_dynar_is_empty(mc_global_variables)){
1844 xbt_dynar_push(mc_global_variables, &var);
1846 unsigned int cursor = 0;
1848 int end = xbt_dynar_length(mc_global_variables) - 1;
1849 global_variable_t current_var = NULL;
1851 while(start <= end){
1852 cursor = (start + end) / 2;
1853 current_var = (global_variable_t)xbt_dynar_get_as(mc_global_variables, cursor, global_variable_t);
1854 if(current_var->address == var->address)
1856 if(current_var->address < var->address)
1858 if(current_var->address > var->address)
1862 if(current_var->address < var->address)
1863 xbt_dynar_insert_at(mc_global_variables, cursor + 1, &var);
1865 xbt_dynar_insert_at(mc_global_variables, cursor, &var);
1869 xbt_dynar_free(&line_tokens);
1879 void global_variable_free(global_variable_t v){
1884 void global_variable_free_voidp(void *v){
1885 global_variable_free((global_variable_t) * (void **) v);