#include "../surf/surf_private.h"
#include "../simix/smx_private.h"
+#include "../xbt/mmalloc/mmprivate.h"
#include "xbt/fifo.h"
#include "mc_private.h"
-#include "xbt/automaton/automaton_create.h"
+#include "xbt/automaton.h"
XBT_LOG_NEW_CATEGORY(mc, "All MC categories");
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_global, mc,
"Logging specific to MC (global)");
+/* Configuration support */
+e_mc_reduce_t mc_reduce_kind=e_mc_reduce_unset;
+
+extern int _surf_init_status;
+void _mc_cfg_cb_reduce(const char *name, int pos) {
+ if (_surf_init_status && !_surf_do_model_check) {
+ 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.");
+ }
+ char *val= xbt_cfg_get_string(_surf_cfg_set, name);
+ if (!strcasecmp(val,"none")) {
+ mc_reduce_kind = e_mc_reduce_none;
+ } else if (!strcasecmp(val,"dpor")) {
+ mc_reduce_kind = e_mc_reduce_dpor;
+ } else {
+ xbt_die("configuration option %s can only take 'none' or 'dpor' as a value",name);
+ }
+ xbt_cfg_set_int(_surf_cfg_set,"model-check",1);
+}
+
+void _mc_cfg_cb_checkpoint(const char *name, int pos) {
+ if (_surf_init_status && !_surf_do_model_check) {
+ 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.");
+ }
+ _surf_mc_checkpoint = xbt_cfg_get_int(_surf_cfg_set, name);
+ xbt_cfg_set_int(_surf_cfg_set,"model-check",1);
+}
+void _mc_cfg_cb_property(const char *name, int pos) {
+ if (_surf_init_status && !_surf_do_model_check) {
+ 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.");
+ }
+ _surf_mc_property_file= xbt_cfg_get_string(_surf_cfg_set, name);
+ xbt_cfg_set_int(_surf_cfg_set,"model-check",1);
+}
+
+
/* MC global data structures */
mc_state_t mc_current_state = NULL;
char mc_replay_mode = FALSE;
double *mc_time = NULL;
mc_snapshot_t initial_snapshot = NULL;
+int raw_mem_set;
/* Safety */
mc_stats_pair_t mc_stats_pair = NULL;
xbt_fifo_t mc_stack_liveness = NULL;
mc_snapshot_t initial_snapshot_liveness = NULL;
+int compare;
+xbt_dynar_t mc_binary_local_variables = NULL;
-xbt_automaton_t automaton;
+extern xbt_dynar_t mmalloc_ignore;
+
+xbt_automaton_t _mc_property_automaton = NULL;
-static void MC_init_liveness(xbt_automaton_t a);
static void MC_assert_pair(int prop);
+void MC_do_the_modelcheck_for_real() {
+ if (!_surf_mc_property_file || _surf_mc_property_file[0]=='\0') {
+ if (mc_reduce_kind==e_mc_reduce_unset)
+ mc_reduce_kind=e_mc_reduce_dpor;
+
+ XBT_INFO("Check a safety property");
+ MC_modelcheck();
+
+ } else {
+
+ if (mc_reduce_kind==e_mc_reduce_unset)
+ mc_reduce_kind=e_mc_reduce_none;
+
+ XBT_INFO("Check the liveness property %s",_surf_mc_property_file);
+ MC_automaton_load(_surf_mc_property_file);
+ MC_modelcheck_liveness();
+ }
+}
/**
* \brief Initialize the model-checker data structures
void MC_init_safety(void)
{
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
/* Check if MC is already initialized */
if (initial_snapshot)
return;
/* Initialize the data structures that must be persistent across every
iteration of the model-checker (in RAW memory) */
+
MC_SET_RAW_MEM;
/* Initialize statistics */
MC_take_snapshot(initial_snapshot);
MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
+}
+
+void MC_compare(void){
+ compare = 1;
+}
+
+
+void MC_modelcheck(void)
+{
+ MC_init_safety();
+ MC_dpor();
+ MC_exit();
}
+void MC_modelcheck_liveness(){
-static void MC_init_liveness(xbt_automaton_t a){
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+ /* init stuff */
XBT_DEBUG("Start init mc");
mc_time = xbt_new0(double, simix_process_maxpid);
+ /* mc_time refers to clock for each process -> ignore it for heap comparison */
+ int i;
+ for(i = 0; i<simix_process_maxpid; i++)
+ MC_ignore(&(mc_time[i]), sizeof(double));
+
+ compare = 0;
+
/* Initialize the data structures that must be persistent across every
iteration of the model-checker (in RAW memory) */
MC_SET_RAW_MEM;
+ mc_binary_local_variables = xbt_dynar_new(sizeof(dw_frame_t), NULL);
+
/* Initialize statistics */
mc_stats_pair = xbt_new0(s_mc_stats_pair_t, 1);
MC_UNSET_RAW_MEM;
- automaton = a;
+ /* Get local variables in binary for state equality detection */
+ MC_get_binary_local_variables();
MC_ddfs_init();
-
-}
-
-
-void MC_modelcheck(void)
-{
- MC_init_safety();
- MC_dpor();
- MC_exit();
-}
-
-
-
-void MC_modelcheck_liveness(xbt_automaton_t a){
- MC_init_liveness(a);
- MC_exit_liveness();
-}
-
-void MC_exit_liveness(void)
-{
+ /* We're done */
MC_print_statistics_pairs(mc_stats_pair);
- //xbt_free(mc_time);
- //MC_memory_exit();
+ xbt_free(mc_time);
+ MC_memory_exit();
exit(0);
}
}
/**
- * \brief Re-executes from the start state all the transitions indicated by
+ * \brief Re-executes from the state at position start all the transitions indicated by
* a given model-checker stack.
* \param stack The stack with the transitions to execute.
* \param start Start index to begin the re-execution.
*/
void MC_replay(xbt_fifo_t stack, int start)
{
- int value;
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
+ int value, i = 1;
char *req_str;
smx_simcall_t req = NULL, saved_req = NULL;
- xbt_fifo_item_t item;
+ xbt_fifo_item_t item, start_item;
mc_state_t state;
XBT_DEBUG("**** Begin Replay ****");
- /* Restore the initial state */
- MC_restore_snapshot(initial_snapshot);
- /* At the moment of taking the snapshot the raw heap was set, so restoring
- * it will set it back again, we have to unset it to continue */
- MC_UNSET_RAW_MEM;
+ if(start == -1){
+ /* Restore the initial state */
+ MC_restore_snapshot(initial_snapshot);
+ /* At the moment of taking the snapshot the raw heap was set, so restoring
+ * it will set it back again, we have to unset it to continue */
+ MC_UNSET_RAW_MEM;
+ }
- /* Traverse the stack from the initial state and re-execute the transitions */
- for (item = xbt_fifo_get_last_item(stack);
+ start_item = xbt_fifo_get_last_item(stack);
+ if(start != -1){
+ while (i != start){
+ start_item = xbt_fifo_get_prev_item(start_item);
+ i++;
+ }
+ }
+
+ /* Traverse the stack from the state at position start and re-execute the transitions */
+ for (item = start_item;
item != xbt_fifo_get_first_item(stack);
item = xbt_fifo_get_prev_item(item)) {
mc_stats->executed_transitions++;
}
XBT_DEBUG("**** End Replay ****");
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
+
}
void MC_replay_liveness(xbt_fifo_t stack, int all_stack)
{
+
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
int value;
char *req_str;
smx_simcall_t req = NULL, saved_req = NULL;
}
XBT_DEBUG("**** End Replay ****");
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
}
/**
*/
void MC_dump_stack_safety(xbt_fifo_t stack)
{
+
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
MC_show_stack_safety(stack);
- if(!_surf_do_mc_checkpoint){
+ if(!_surf_mc_checkpoint){
mc_state_t state;
MC_UNSET_RAW_MEM;
}
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
}
}
void MC_dump_stack_liveness(xbt_fifo_t stack){
+
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
mc_pair_stateless_t pair;
MC_SET_RAW_MEM;
while ((pair = (mc_pair_stateless_t) xbt_fifo_pop(stack)) != NULL)
MC_pair_stateless_delete(pair);
MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
}
return 0;
}
-void MC_diff(void){
+void MC_automaton_load(const char *file){
- mc_snapshot_t sn = xbt_new0(s_mc_snapshot_t, 1);
- MC_take_snapshot_liveness(sn);
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
- int i;
+ MC_SET_RAW_MEM;
- XBT_INFO("Number of regions : %u", sn->num_reg);
+ if (_mc_property_automaton == NULL)
+ _mc_property_automaton = xbt_automaton_new();
+
+ xbt_automaton_load(_mc_property_automaton,file);
- for(i=0; i<sn->num_reg; i++){
-
- switch(sn->regions[i]->type){
- case 0: /* heap */
- XBT_INFO("Size of heap : %zu", sn->regions[i]->size);
- mmalloc_display_info_heap(sn->regions[i]->data);
- break;
- case 1 : /* libsimgrid */
- XBT_INFO("Size of libsimgrid : %zu", sn->regions[i]->size);
- break;
- case 2 : /* data program */
- XBT_INFO("Size of data program : %zu", sn->regions[i]->size);
- break;
- case 3 : /* stack */
- XBT_INFO("Size of stack : %zu", sn->regions[i]->size);
- XBT_INFO("Start addr of stack : %p", sn->regions[i]->start_addr);
+ MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
+}
+
+void MC_automaton_new_propositional_symbol(const char* id, void* fct) {
+
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
+ MC_SET_RAW_MEM;
+
+ if (_mc_property_automaton == NULL)
+ _mc_property_automaton = xbt_automaton_new();
+
+ xbt_new_propositional_symbol(_mc_property_automaton,id,fct);
+
+ MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
+}
+
+/************ MC_ignore ***********/
+
+void MC_ignore_init(){
+ MC_SET_RAW_MEM;
+ mmalloc_ignore = xbt_dynar_new(sizeof(mc_ignore_region_t), NULL);
+ MC_UNSET_RAW_MEM;
+}
+
+void MC_ignore(void *address, size_t size){
+
+ MC_SET_RAW_MEM;
+
+ mc_ignore_region_t region = NULL;
+ region = xbt_new0(s_mc_ignore_region_t, 1);
+ region->address = address;
+ region->size = size;
+ region->block = ((char*)address - (char*)((xbt_mheap_t)std_heap)->heapbase) / BLOCKSIZE + 1;
+
+ if(((xbt_mheap_t)std_heap)->heapinfo[region->block].type == 0){
+ region->fragment = -1;
+ }else{
+ region->fragment = ((uintptr_t) (ADDR2UINT (address) % (BLOCKSIZE))) >> ((xbt_mheap_t)std_heap)->heapinfo[region->block].type;
+ }
+
+ unsigned int cursor = 0;
+ mc_ignore_region_t current_region;
+ xbt_dynar_foreach(mmalloc_ignore, cursor, current_region){
+ if(current_region->address > address)
break;
+ }
+
+ xbt_dynar_insert_at(mmalloc_ignore, cursor, ®ion);
+
+ MC_UNSET_RAW_MEM;
+}
+
+/************ DWARF ***********/
+
+static e_dw_location_type get_location(char *expr, dw_location_t entry);
+
+void MC_get_binary_local_variables(){
+
+ char *command = bprintf("dwarfdump -i %s", xbt_binary_name);
+
+ FILE* fp = popen(command, "r");
+
+ if(fp == NULL)
+ perror("popen failed");
+
+ char *line = NULL, *tmp_line = NULL, *tmp_location = NULL, *frame_name = NULL;
+ ssize_t read;
+ size_t n = 0;
+ int valid_variable = 1, valid_frame = 1;
+ char *node_type = NULL, *location_type = NULL, *variable_name = NULL, *lowpc = NULL, *highpc = NULL;
+ xbt_dynar_t split = NULL;
+
+ read = getline(&line, &n, fp);
+
+ while (read != -1) {
+
+ if(n == 0)
+ continue;
+
+ /* Wipeout the new line character */
+ line[read - 1] = '\0';
+
+ if(line[0] == '<'){
+
+ /* Get node type */
+ strtok(line, " ");
+ strtok(NULL, " ");
+ node_type = strtok(NULL, " ");
+
+ if(strcmp(node_type, "DW_TAG_subprogram") == 0){ /* New frame */
+
+ read = getline(&line, &n, fp);
+
+ while(read != -1 && line[0] != '<'){
+
+ if(n == 0)
+ continue;
+
+ node_type = strtok(line, " ");
+
+ if(node_type != NULL && strcmp(node_type, "DW_AT_name") == 0){
+
+ frame_name = strdup(strtok(NULL, " "));
+ read = getline(&line, &n, fp);
+
+ }else if(node_type != NULL && strcmp(node_type, "DW_AT_frame_base") == 0){
+
+ if(valid_frame == 1){
+
+ dw_frame_t frame = xbt_new0(s_dw_frame_t, 1);
+ frame->name = strdup(frame_name);
+ frame->variables = xbt_dynar_new(sizeof(dw_local_variable_t), NULL);
+ frame->location = xbt_new0(s_dw_location_t, 1);
+
+ location_type = strtok(NULL, " ");
+
+ if(strcmp(location_type, "<loclist") == 0){
+
+ frame->location->type = e_dw_loclist;
+ frame->location->location.loclist = xbt_dynar_new(sizeof(dw_location_entry_t), NULL);
+
+ read = getline(&line, &n, fp);
+ xbt_str_ltrim(line, NULL);
+
+ while(read != -1 && line[0] == '['){
+
+ strtok(line, "<");
+ lowpc = strdup(strtok(NULL, "<"));
+ highpc = strdup(strtok(NULL, ">"));
+ tmp_location = strdup(strtok(NULL, ">"));
+ lowpc[strlen(lowpc) - 1] = '\0'; /* Remove last character '>' */
+
+ dw_location_entry_t new_entry = xbt_new0(s_dw_location_entry_t, 1);
+
+ strtok(lowpc, "=");
+ new_entry->lowpc = (void *) strtoul(strtok(NULL, "="), NULL, 16);
+ strtok(highpc, "=");
+ new_entry->highpc = (void *) strtoul(strtok(NULL, "="), NULL, 16);
+
+ new_entry->location = xbt_new0(s_dw_location_t, 1);
+
+ get_location(tmp_location, new_entry->location);
+
+ xbt_dynar_push(frame->location->location.loclist, &new_entry);
+
+ read = getline(&line, &n, fp);
+ xbt_str_ltrim(line, NULL);
+ }
+
+ }else{
+ read = getline(&line, &n, fp);
+ frame->location->type = get_location(location_type, frame->location);
+
+ }
+
+ xbt_dynar_push(mc_binary_local_variables, &frame);
+
+ }else{
+
+ read = getline(&line, &n, fp);
+
+ }
+
+ }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)){
+
+ read = getline(&line, &n, fp);
+ valid_frame = 0;
+
+ }else{
+
+ read = getline(&line, &n, fp);
+
+ }
+
+ }
+
+ valid_frame = 1;
+
+ }else if(strcmp(node_type, "DW_TAG_variable") == 0){ /* New variable */
+
+ variable_name = NULL;
+ location_type = NULL;
+
+ read = getline(&line, &n, fp);
+
+ while(read != -1 && line[0] != '<'){
+
+ if(n == 0)
+ continue;
+
+ tmp_line = strdup(line);
+
+ node_type = strtok(line, " ");
+
+ if(node_type != NULL && strcmp(node_type, "DW_AT_name") == 0){
+
+ variable_name = strdup(strtok(NULL, " "));
+ read = getline(&line, &n, fp);
+
+ }else if(node_type != NULL && strcmp(node_type, "DW_AT_location") == 0){
+
+ if(valid_variable == 1){
+
+ location_type = strdup(strtok(NULL, " "));
+
+ dw_local_variable_t variable = xbt_new0(s_dw_local_variable_t, 1);
+ variable->name = strdup(variable_name);
+ variable->location = xbt_new0(s_dw_location_t, 1);
+
+ if(strcmp(location_type, "<loclist") == 0){
+
+ variable->location->type = e_dw_loclist;
+ variable->location->location.loclist = xbt_dynar_new(sizeof(dw_location_entry_t), NULL);
+
+ read = getline(&line, &n, fp);
+ xbt_str_ltrim(line, NULL);
+
+ while(read != -1 && line[0] == '['){
+
+ strtok(line, "<");
+ lowpc = strdup(strtok(NULL, "<"));
+ highpc = strdup(strtok(NULL, ">"));
+ tmp_location = strdup(strtok(NULL, ">"));
+ lowpc[strlen(lowpc) - 1] = '\0'; /* Remove last character '>' */
+
+ dw_location_entry_t new_entry = xbt_new0(s_dw_location_entry_t, 1);
+
+ strtok(lowpc, "=");
+ new_entry->lowpc = (void *) strtoul(strtok(NULL, "="), NULL, 16);
+ strtok(highpc, "=");
+ new_entry->highpc = (void *) strtoul(strtok(NULL, "="), NULL, 16);
+
+ new_entry->location = xbt_new0(s_dw_location_t, 1);
+
+ get_location(tmp_location, new_entry->location);
+
+ xbt_dynar_push(variable->location->location.loclist, &new_entry);
+
+ read = getline(&line, &n, fp);
+ xbt_str_ltrim(line, NULL);
+ }
+
+ }else{
+
+ xbt_str_strip_spaces(tmp_line);
+ split = xbt_str_split(tmp_line, " ");
+ xbt_dynar_remove_at(split, 0, NULL);
+ location_type = xbt_str_join(split, " ");
+
+ variable->location->type = get_location(location_type, variable->location);
+ read = getline(&line, &n, fp);
+
+ }
+
+ 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);
+
+ }else{
+
+ read = getline(&line, &n, fp);
+
+ }
+
+ }else if(node_type != NULL && (strcmp(node_type, "DW_AT_artificial") == 0 || strcmp(node_type, "DW_AT_external") == 0)){
+
+ valid_variable = 0;
+ read = getline(&line, &n, fp);
+
+ }else{
+
+ read = getline(&line, &n, fp);
+
+ }
+
+ }
+
+ valid_variable = 1;
+
+ }else{
+
+ read = getline(&line, &n, fp);
+
+ }
+
+ }else{
+
+ read = getline(&line, &n, fp);
+
}
}
+ print_local_variables(mc_binary_local_variables);
+
+ free(line); free(tmp_line); free(tmp_location); free(frame_name);
+ free(node_type); free(location_type); free(variable_name); free(lowpc); free(highpc);
+ free(command);
+ pclose(fp);
}
-xbt_automaton_t MC_create_automaton(const char *file){
- MC_SET_RAW_MEM;
- xbt_automaton_t a = xbt_create_automaton(file);
- MC_UNSET_RAW_MEM;
- return a;
+void print_local_variables(xbt_dynar_t list){
+
+ dw_frame_t frame;
+ dw_local_variable_t variable;
+ dw_location_entry_t entry;
+ dw_location_t location_entry;
+ unsigned int cursor = 0, cursor2 = 0, cursor3 = 0, cursor4 = 0;
+
+ xbt_dynar_foreach(list, cursor, frame){
+ fprintf(stderr, "Frame name : %s", frame->name);
+ fprintf(stderr, "Location type : %d\n", frame->location->type);
+ fprintf(stderr, "Variables : (%lu)\n", xbt_dynar_length(frame->variables));
+ xbt_dynar_foreach(frame->variables, cursor2, variable){
+ fprintf(stderr, "Name : %s", variable->name);
+ fprintf(stderr, "Location type : %d\n", variable->location->type);
+ switch(variable->location->type){
+ case e_dw_loclist :
+ xbt_dynar_foreach(variable->location->location.loclist, cursor3, entry){
+ fprintf(stderr, "Lowpc : %p, Highpc : %p,", entry->lowpc, entry->highpc);
+ switch(entry->location->type){
+ case e_dw_register :
+ fprintf(stderr, " Location : in register %d\n", entry->location->location.reg);
+ break;
+ case e_dw_bregister_op:
+ fprintf(stderr, " Location : Add %d to the value in register %d\n", entry->location->location.breg_op.offset, entry->location->location.breg_op.reg);
+ break;
+ case e_dw_lit:
+ fprintf(stderr, "Value already kwnown : %d\n", entry->location->location.lit);
+ break;
+ case e_dw_fbregister_op:
+ fprintf(stderr, " Location : %d bytes from logical frame pointer\n", entry->location->location.fbreg_op);
+ break;
+ case e_dw_compose:
+ fprintf(stderr, " Location :\n");
+ xbt_dynar_foreach(entry->location->location.compose, cursor4, location_entry){
+ switch(location_entry->type){
+ case e_dw_register :
+ fprintf(stderr, " %d) in register %d\n", cursor4 + 1, location_entry->location.reg);
+ break;
+ case e_dw_bregister_op:
+ 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);
+ break;
+ case e_dw_lit:
+ fprintf(stderr, "%d) Value already kwnown : %d\n", cursor4 + 1, location_entry->location.lit);
+ break;
+ case e_dw_fbregister_op:
+ fprintf(stderr, " %d) %d bytes from logical frame pointer\n", cursor4 + 1, location_entry->location.fbreg_op);
+ break;
+ case e_dw_deref:
+ 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);
+ break;
+ case e_dw_arithmetic :
+ fprintf(stderr, "%d) arithmetic operation : %s\n", cursor4 + 1, location_entry->location.arithmetic);
+ break;
+ case e_dw_piece:
+ fprintf(stderr, "%d) The %d byte(s) previous value\n", cursor4 + 1, location_entry->location.piece);
+ break;
+ case e_dw_constant :
+ fprintf(stderr, "%d) Constant %d\n", cursor4 + 1, location_entry->location.constant.value);
+ break;
+ default :
+ fprintf(stderr, "%d) Location type not supported\n", cursor4 + 1);
+ break;
+ }
+ }
+ break;
+ default:
+ fprintf(stderr, "Location type not supported\n");
+ break;
+ }
+ }
+ break;
+ case e_dw_compose:
+ cursor4 = 0;
+ fprintf(stderr, "Location :\n");
+ xbt_dynar_foreach(variable->location->location.compose, cursor4, location_entry){
+ switch(location_entry->type){
+ case e_dw_register :
+ fprintf(stderr, " %d) in register %d\n", cursor4 + 1, location_entry->location.reg);
+ break;
+ case e_dw_bregister_op:
+ 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);
+ break;
+ case e_dw_lit:
+ fprintf(stderr, "%d) Value already kwnown : %d\n", cursor4 + 1, location_entry->location.lit);
+ break;
+ case e_dw_fbregister_op:
+ fprintf(stderr, " %d) %d bytes from logical frame pointer\n", cursor4 + 1, location_entry->location.fbreg_op);
+ break;
+ case e_dw_deref:
+ 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);
+ break;
+ case e_dw_arithmetic :
+ fprintf(stderr, "%d) arithmetic operation : %s\n", cursor4 + 1, location_entry->location.arithmetic);
+ break;
+ case e_dw_piece:
+ fprintf(stderr, "%d) The %d byte(s) previous value\n", cursor4 + 1, location_entry->location.piece);
+ break;
+ case e_dw_constant :
+ fprintf(stderr, "%d) Constant %d\n", cursor4 + 1, location_entry->location.constant.value);
+ break;
+ default :
+ fprintf(stderr, "%d) Location type not supported\n", cursor4 + 1);
+ break;
+ }
+ }
+ break;
+ default :
+ fprintf(stderr, "Location type not supported\n");
+ break;
+ }
+ }
+ }
+
+}
+
+static e_dw_location_type get_location(char *expr, dw_location_t entry){
+
+ int cursor = 0;
+ char *tok = NULL, *tmp_tok = NULL;
+
+ xbt_dynar_t tokens = xbt_str_split(expr, NULL);
+ xbt_dynar_remove_at(tokens, xbt_dynar_length(tokens) - 1, NULL);
+
+ if(xbt_dynar_length(tokens) > 1){
+
+ entry->type = e_dw_compose;
+ entry->location.compose = xbt_dynar_new(sizeof(dw_location_t), NULL);
+
+ while(cursor < xbt_dynar_length(tokens)){
+
+ tok = xbt_dynar_get_as(tokens, cursor, char*);
+
+ if(strncmp(tok, "DW_OP_reg", 9) == 0){
+ dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
+ new_element->type = e_dw_register;
+ if(tok[9] == 'x'){
+ new_element->location.reg = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
+ }else{
+ new_element->location.reg = atoi(strtok(tok, "DW_OP_reg"));
+ }
+ xbt_dynar_push(entry->location.compose, &new_element);
+ }else if(strcmp(tok, "DW_OP_fbreg") == 0){
+ dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
+ new_element->type = e_dw_fbregister_op;
+ new_element->location.fbreg_op = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
+ xbt_dynar_push(entry->location.compose, &new_element);
+ }else if(strncmp(tok, "DW_OP_breg", 10) == 0){
+ dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
+ new_element->type = e_dw_bregister_op;
+ if(tok[10] == 'x'){
+ new_element->location.breg_op.reg = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
+ new_element->location.breg_op.offset = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
+ }else{
+ if(strchr(tok,'+') != NULL){
+ tmp_tok = strtok(tok,"DW_OP_breg");
+ new_element->location.breg_op.reg = atoi(strtok(tmp_tok,"+"));
+ new_element->location.breg_op.offset = atoi(strtok(NULL,"+"));
+ }else{
+ new_element->location.breg_op.reg = atoi(strtok(tok, "DW_OP_breg"));
+ new_element->location.breg_op.offset = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
+ }
+ }
+ xbt_dynar_push(entry->location.compose, &new_element);
+ }else if(strncmp(tok, "DW_OP_lit", 9) == 0){
+ dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
+ new_element->type = e_dw_lit;
+ new_element->location.lit = atoi(strtok(tok, "DW_OP_lit"));
+ xbt_dynar_push(entry->location.compose, &new_element);
+ }else if(strcmp(tok, "DW_OP_piece") == 0){
+ dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
+ new_element->type = e_dw_piece;
+ if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
+ new_element->location.piece = atoi(xbt_dynar_get_as(tokens, cursor, char*));
+ else
+ new_element->location.piece = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';
+ xbt_dynar_push(entry->location.compose, &new_element);
+
+ }else if(strcmp(tok, "DW_OP_abs") == 0 ||
+ strcmp(tok, "DW_OP_and") == 0 ||
+ strcmp(tok, "DW_OP_div") == 0 ||
+ strcmp(tok, "DW_OP_minus") == 0 ||
+ strcmp(tok, "DW_OP_mod") == 0 ||
+ strcmp(tok, "DW_OP_mul") == 0 ||
+ strcmp(tok, "DW_OP_neg") == 0 ||
+ strcmp(tok, "DW_OP_not") == 0 ||
+ strcmp(tok, "DW_OP_or") == 0 ||
+ strcmp(tok, "DW_OP_plus") == 0 ||
+ strcmp(tok, "DW_OP_plus_uconst") == 0){
+ dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
+ new_element->type = e_dw_arithmetic;
+ new_element->location.arithmetic = strdup(strtok(tok, "DW_OP_"));
+ xbt_dynar_push(entry->location.compose, &new_element);
+ }else if(strcmp(tok, "DW_OP_stack_value") == 0){
+ cursor++;
+ }else if(strcmp(tok, "DW_OP_deref_size") == 0){
+ dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
+ new_element->type = e_dw_deref;
+ if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
+ new_element->location.deref_size = atoi(xbt_dynar_get_as(tokens, cursor, char*));
+ else
+ new_element->location.deref_size = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';
+ xbt_dynar_push(entry->location.compose, &new_element);
+ }else if(strcmp(tok, "DW_OP_deref") == 0){
+ dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
+ new_element->type = e_dw_deref;
+ new_element->location.deref_size = sizeof(void *);
+ xbt_dynar_push(entry->location.compose, &new_element);
+ }else if(strcmp(tok, "DW_OP_constu") == 0){
+ dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
+ new_element->type = e_dw_constant;
+ new_element->location.constant.is_signed = 0;
+ new_element->location.constant.bytes = 1;
+ if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
+ new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, cursor, char*));
+ else
+ new_element->location.constant.value = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';
+ xbt_dynar_push(entry->location.compose, &new_element);
+ }else if(strcmp(tok, "DW_OP_consts") == 0){
+ dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
+ new_element->type = e_dw_constant;
+ new_element->location.constant.is_signed = 1;
+ new_element->location.constant.bytes = 1;
+ new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
+ xbt_dynar_push(entry->location.compose, &new_element);
+ }else if(strcmp(tok, "DW_OP_const1u") == 0 ||
+ strcmp(tok, "DW_OP_const2u") == 0 ||
+ strcmp(tok, "DW_OP_const4u") == 0 ||
+ strcmp(tok, "DW_OP_const8u") == 0){
+ dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
+ new_element->type = e_dw_constant;
+ new_element->location.constant.is_signed = 0;
+ new_element->location.constant.bytes = tok[11] - '0';
+ if(strlen(xbt_dynar_get_as(tokens, ++cursor, char*)) > 1)
+ new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, cursor, char*));
+ else
+ new_element->location.constant.value = xbt_dynar_get_as(tokens, cursor, char*)[0] - '0';
+ xbt_dynar_push(entry->location.compose, &new_element);
+ }else if(strcmp(tok, "DW_OP_const1s") == 0 ||
+ strcmp(tok, "DW_OP_const2s") == 0 ||
+ strcmp(tok, "DW_OP_const4s") == 0 ||
+ strcmp(tok, "DW_OP_const8s") == 0){
+ dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
+ new_element->type = e_dw_constant;
+ new_element->location.constant.is_signed = 1;
+ new_element->location.constant.bytes = tok[11] - '0';
+ new_element->location.constant.value = atoi(xbt_dynar_get_as(tokens, ++cursor, char*));
+ xbt_dynar_push(entry->location.compose, &new_element);
+ }else{
+ dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
+ new_element->type = e_dw_unsupported;
+ xbt_dynar_push(entry->location.compose, &new_element);
+ }
+
+ cursor++;
+
+ }
+
+ free(tok);
+ free(tmp_tok);
+ /*xbt_dynar_free(&tokens);*/
+
+ return e_dw_compose;
+
+ }else{
+
+ if(strncmp(expr, "DW_OP_reg", 9) == 0){
+ entry->type = e_dw_register;
+ entry->location.reg = atoi(strtok(expr,"DW_OP_reg"));
+ }else if(strncmp(expr, "DW_OP_breg", 10) == 0){
+ entry->type = e_dw_bregister_op;
+ tok = strtok(expr, "+");
+ entry->location.breg_op.offset = atoi(strtok(NULL, "+"));
+ entry->location.breg_op.reg = atoi(strtok(tok, "DW_OP_breg"));
+ }else{
+ entry->type = e_dw_unsupported;
+ }
+
+ free(tok);
+ free(tmp_tok);
+
+ return entry->type;
+
+ }
+
}