+/* Copyright (c) 2008-2012 Da SimGrid Team. All rights reserved. */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
+#include <sys/time.h>
#include "../surf/surf_private.h"
-#include "../simix/private.h"
+#include "../simix/smx_private.h"
+#include "../xbt/mmalloc/mmprivate.h"
#include "xbt/fifo.h"
-#include "private.h"
-
+#include "mc_private.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_snapshot_t initial_snapshot = NULL;
-xbt_fifo_t mc_stack = NULL;
-mc_stats_t mc_stats = NULL;
-mc_stats_pair_t mc_stats_pair = NULL;
+
mc_state_t mc_current_state = NULL;
char mc_replay_mode = FALSE;
double *mc_time = NULL;
-xbt_fifo_t mc_snapshot_stack = NULL;
+mc_snapshot_t initial_snapshot = NULL;
+int raw_mem_set;
+
+/* Safety */
+
+xbt_fifo_t mc_stack_safety = NULL;
+mc_stats_t mc_stats = NULL;
+
+/* Liveness */
+
+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;
+
+extern xbt_dynar_t mmalloc_ignore;
+extern xbt_dynar_t stacks_areas;
+
+xbt_automaton_t _mc_property_automaton = NULL;
+
+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(void)
+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_stats->state_size = 1;
/* Create exploration stack */
- mc_stack = xbt_fifo_new();
+ mc_stack_safety = xbt_fifo_new();
MC_UNSET_RAW_MEM;
initial_snapshot = xbt_new0(s_mc_snapshot_t, 1);
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_init_with_automaton(xbt_automaton_t a){
+void MC_modelcheck(void)
+{
+ MC_init_safety();
+ MC_dpor();
+ MC_exit();
+}
+
+void MC_modelcheck_liveness(){
+
+ 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_stats_pair->pair_size = 1;
- XBT_DEBUG("Creating snapshot_stack");
+ XBT_DEBUG("Creating stack");
- /* Create exploration stack */
- mc_snapshot_stack = xbt_fifo_new();
+ /* Create exploration stack */
+ mc_stack_liveness = xbt_fifo_new();
MC_UNSET_RAW_MEM;
- //MC_dfs_init(a);
- MC_stateful_dpor_init(a);
-}
-
+ /* Get local variables in binary for state equality detection */
+ MC_get_binary_local_variables();
-void MC_modelcheck(void)
-{
- MC_init();
- MC_dpor();
- MC_exit();
-}
+ MC_ddfs_init();
-void MC_modelcheck_with_automaton(xbt_automaton_t a){
- MC_init_with_automaton(a);
- MC_exit_with_automaton();
-}
-
-void MC_exit_with_automaton(void)
-{
+ /* We're done */
MC_print_statistics_pairs(mc_stats_pair);
xbt_free(mc_time);
MC_memory_exit();
+ exit(0);
}
+
void MC_exit(void)
{
MC_print_statistics(mc_stats);
MC_memory_exit();
}
+
int MC_random(int min, int max)
{
/*FIXME: return mc_current_state->executed_transition->random.value;*/
void MC_wait_for_requests(void)
{
smx_process_t process;
- smx_req_t req;
+ smx_simcall_t req;
unsigned int iter;
- while (xbt_dynar_length(simix_global->process_to_run)) {
+ while (!xbt_dynar_is_empty(simix_global->process_to_run)) {
SIMIX_process_runall();
xbt_dynar_foreach(simix_global->process_that_ran, iter, process) {
- req = &process->request;
- if (req->call != REQ_NO_REQ && !MC_request_is_visible(req))
- SIMIX_request_pre(req, 0);
+ req = &process->simcall;
+ if (req->call != SIMCALL_NONE && !MC_request_is_visible(req))
+ SIMIX_simcall_pre(req, 0);
}
}
}
if(xbt_swag_size(simix_global->process_list)){
deadlock = TRUE;
xbt_swag_foreach(process, simix_global->process_list){
- if(process->request.call != REQ_NO_REQ
- && MC_request_is_enabled(&process->request)){
+ if(process->simcall.call != SIMCALL_NONE
+ && MC_request_is_enabled(&process->simcall)){
deadlock = FALSE;
break;
}
}
/**
- * \brief Re-executes from the initial 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.
-*/
-void MC_replay(xbt_fifo_t stack)
+ * \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_req_t req = NULL, saved_req = NULL;
- xbt_fifo_item_t item;
+ smx_simcall_t req = NULL, saved_req = NULL;
+ 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)) {
if(saved_req){
/* because we got a copy of the executed request, we have to fetch the
real one, pointed by the request field of the issuer process */
- req = &saved_req->issuer->request;
+ req = &saved_req->issuer->simcall;
/* Debug information */
if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
}
}
- SIMIX_request_pre(req, value);
+ SIMIX_simcall_pre(req, value);
MC_wait_for_requests();
/* Update statistics */
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_fifo_item_t item;
+ mc_state_t state;
+ mc_pair_stateless_t pair;
+ int depth = 1;
+
+ XBT_DEBUG("**** Begin Replay ****");
+
+ /* Restore the initial state */
+ MC_restore_snapshot(initial_snapshot_liveness);
+ /* 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(all_stack){
+
+ item = xbt_fifo_get_last_item(stack);
+
+ while(depth <= xbt_fifo_size(stack)){
+
+ pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item);
+ state = (mc_state_t) pair->graph_state;
+
+ if(pair->requests > 0){
+
+ saved_req = MC_state_get_executed_request(state, &value);
+ //XBT_DEBUG("SavedReq->call %u", saved_req->call);
+
+ if(saved_req != NULL){
+ /* because we got a copy of the executed request, we have to fetch the
+ real one, pointed by the request field of the issuer process */
+ req = &saved_req->issuer->simcall;
+ //XBT_DEBUG("Req->call %u", req->call);
+
+ /* Debug information */
+ if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
+ req_str = MC_request_to_string(req, value);
+ XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
+ xbt_free(req_str);
+ }
+
+ }
+
+ SIMIX_simcall_pre(req, value);
+ MC_wait_for_requests();
+ }
+
+ depth++;
+
+ /* Update statistics */
+ mc_stats_pair->visited_pairs++;
+
+ item = xbt_fifo_get_prev_item(item);
+ }
+
+ }else{
+
+ /* Traverse the stack from the initial state and re-execute the transitions */
+ for (item = xbt_fifo_get_last_item(stack);
+ item != xbt_fifo_get_first_item(stack);
+ item = xbt_fifo_get_prev_item(item)) {
+
+ pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item);
+ state = (mc_state_t) pair->graph_state;
+
+ if(pair->requests > 0){
+
+ saved_req = MC_state_get_executed_request(state, &value);
+ //XBT_DEBUG("SavedReq->call %u", saved_req->call);
+
+ if(saved_req != NULL){
+ /* because we got a copy of the executed request, we have to fetch the
+ real one, pointed by the request field of the issuer process */
+ req = &saved_req->issuer->simcall;
+ //XBT_DEBUG("Req->call %u", req->call);
+
+ /* Debug information */
+ if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
+ req_str = MC_request_to_string(req, value);
+ XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
+ xbt_free(req_str);
+ }
+
+ }
+
+ SIMIX_simcall_pre(req, value);
+ MC_wait_for_requests();
+ }
+
+ depth++;
+
+ /* Update statistics */
+ mc_stats_pair->visited_pairs++;
+ }
+ }
+
+ XBT_DEBUG("**** End Replay ****");
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
}
/**
* \brief Dumps the contents of a model-checker's stack and shows the actual
* execution trace
* \param stack The stack to dump
-*/
-void MC_dump_stack(xbt_fifo_t stack)
+ */
+void MC_dump_stack_safety(xbt_fifo_t stack)
{
- mc_state_t state;
+
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
- MC_show_stack(stack);
+ MC_show_stack_safety(stack);
- MC_SET_RAW_MEM;
- while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL)
- MC_state_delete(state);
- MC_UNSET_RAW_MEM;
+ if(!_surf_mc_checkpoint){
+
+ mc_state_t state;
+
+ MC_SET_RAW_MEM;
+ while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL)
+ MC_state_delete(state);
+ MC_UNSET_RAW_MEM;
+
+ }
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
}
-void MC_show_stack(xbt_fifo_t stack)
+
+void MC_show_stack_safety(xbt_fifo_t stack)
{
int value;
mc_state_t state;
xbt_fifo_item_t item;
- smx_req_t req;
+ smx_simcall_t req;
char *req_str = NULL;
for (item = xbt_fifo_get_last_item(stack);
}
}
-void MC_show_deadlock(smx_req_t req)
+void MC_show_deadlock(smx_simcall_t req)
{
/*char *req_str = NULL;*/
XBT_INFO("**************************");
XBT_INFO("**************************");
XBT_INFO("Locked request:");
/*req_str = MC_request_to_string(req);
- XBT_INFO("%s", req_str);
- xbt_free(req_str);*/
+ XBT_INFO("%s", req_str);
+ xbt_free(req_str);*/
XBT_INFO("Counter-example execution trace:");
- MC_dump_stack(mc_stack);
+ MC_dump_stack_safety(mc_stack_safety);
+}
+
+
+void MC_show_stack_liveness(xbt_fifo_t stack){
+ int value;
+ mc_pair_stateless_t pair;
+ xbt_fifo_item_t item;
+ smx_simcall_t req;
+ char *req_str = NULL;
+
+ for (item = xbt_fifo_get_last_item(stack);
+ (item ? (pair = (mc_pair_stateless_t) (xbt_fifo_get_item_content(item)))
+ : (NULL)); item = xbt_fifo_get_prev_item(item)) {
+ req = MC_state_get_executed_request(pair->graph_state, &value);
+ if(req){
+ if(pair->requests>0){
+ req_str = MC_request_to_string(req, value);
+ XBT_INFO("%s", req_str);
+ xbt_free(req_str);
+ }else{
+ XBT_INFO("End of system requests but evolution in Büchi automaton");
+ }
+ }
+ }
+}
+
+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;
+
}
+
void MC_print_statistics(mc_stats_t stats)
{
- XBT_INFO("State space size ~= %lu", stats->state_size);
+ //XBT_INFO("State space size ~= %lu", stats->state_size);
XBT_INFO("Expanded states = %lu", stats->expanded_states);
XBT_INFO("Visited states = %lu", stats->visited_states);
XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
XBT_INFO("Expanded / Visited = %lf",
- (double) stats->visited_states / stats->expanded_states);
+ (double) stats->visited_states / stats->expanded_states);
/*XBT_INFO("Exploration coverage = %lf",
- (double)stats->expanded_states / stats->state_size); */
+ (double)stats->expanded_states / stats->state_size); */
}
void MC_print_statistics_pairs(mc_stats_pair_t stats)
{
XBT_INFO("Expanded pairs = %lu", stats->expanded_pairs);
XBT_INFO("Visited pairs = %lu", stats->visited_pairs);
- XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
+ //XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
XBT_INFO("Expanded / Visited = %lf",
- (double) stats->visited_pairs / stats->expanded_pairs);
+ (double) stats->visited_pairs / stats->expanded_pairs);
/*XBT_INFO("Exploration coverage = %lf",
- (double)stats->expanded_states / stats->state_size); */
+ (double)stats->expanded_states / stats->state_size); */
}
void MC_assert(int prop)
{
- if (MC_IS_ENABLED && !prop) {
+ if (MC_IS_ENABLED && !prop){
XBT_INFO("**************************");
XBT_INFO("*** PROPERTY NOT VALID ***");
XBT_INFO("**************************");
XBT_INFO("Counter-example execution trace:");
- MC_dump_stack(mc_stack);
+ MC_dump_stack_safety(mc_stack_safety);
MC_print_statistics(mc_stats);
xbt_abort();
}
}
-void MC_assert_pair(int prop){
+static void MC_assert_pair(int prop){
if (MC_IS_ENABLED && !prop) {
XBT_INFO("**************************");
XBT_INFO("*** PROPERTY NOT VALID ***");
XBT_INFO("**************************");
//XBT_INFO("Counter-example execution trace:");
- MC_show_snapshot_stack(mc_snapshot_stack);
+ MC_show_stack_liveness(mc_stack_liveness);
//MC_dump_snapshot_stack(mc_snapshot_stack);
MC_print_statistics_pairs(mc_stats_pair);
xbt_abort();
else
return 0;
}
+
+void MC_automaton_load(const char *file){
+
+ 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_automaton_load(_mc_property_automaton,file);
+
+ 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);
+ stacks_areas = xbt_dynar_new(sizeof(stack_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;
+}
+
+void MC_new_stack_area(void *stack, char *name){
+ MC_SET_RAW_MEM;
+ stack_region_t region = NULL;
+ region = xbt_new0(s_stack_region_t, 1);
+ region->address = stack;
+ region->process_name = strdup(name);
+ xbt_dynar_push(stacks_areas, ®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;
+
+ void *low_pc = NULL, *old_low_pc = NULL;
+
+ int compile_unit_found = 0; /* Detect if the program has been compiled with -g */
+
+ read = getline(&line, &n, fp);
+
+ while (read != -1) {
+
+ if(n == 0)
+ continue;
+
+ /* Wipeout the new line character */
+ line[read - 1] = '\0';
+
+ if(line[0] == '<'){
+
+ /* If the program hasn't been compiled with -g, no symbol (line starting with '<' ) found */
+ compile_unit_found = 1;
+
+ /* 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, " "));
+ xbt_str_trim(frame_name, NULL);
+ xbt_str_trim(frame_name, "\"");
+ 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);
+
+ if(low_pc == NULL){
+ strtok(lowpc, "=");
+ new_entry->lowpc = (void *) strtoul(strtok(NULL, "="), NULL, 16);
+ strtok(highpc, "=");
+ new_entry->highpc = (void *) strtoul(strtok(NULL, "="), NULL, 16);
+ }else{
+ strtok(lowpc, "=");
+ old_low_pc = (void *)strtoul(strtok(NULL, "="), NULL, 16);
+ new_entry->lowpc = (char *)low_pc + (long)old_low_pc;
+ strtok(highpc, "=");
+ new_entry->highpc = (char*)low_pc + ((char *)((void *)strtoul(strtok(NULL, "="), NULL, 16)) - (char*)old_low_pc);
+ }
+
+ 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, " "));
+ xbt_str_trim(variable_name, NULL);
+ xbt_str_trim(variable_name, "\"");
+ 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);
+
+ if(low_pc == NULL){
+ strtok(lowpc, "=");
+ new_entry->lowpc = (void *) strtoul(strtok(NULL, "="), NULL, 16);
+ strtok(highpc, "=");
+ new_entry->highpc = (void *) strtoul(strtok(NULL, "="), NULL, 16);
+ }else{
+ strtok(lowpc, "=");
+ old_low_pc = (void *)strtoul(strtok(NULL, "="), NULL, 16);
+ new_entry->lowpc = (char *)low_pc + (long)old_low_pc;
+ strtok(highpc, "=");
+ new_entry->highpc = (char*)low_pc + ((char *)((void *)strtoul(strtok(NULL, "="), NULL, 16)) - (char*)old_low_pc);
+ }
+
+ 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 if(strcmp(node_type, "DW_TAG_compile_unit") == 0){
+
+ 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_low_pc") == 0){
+ low_pc = (void *) strtoul(strtok(NULL, " "), NULL, 16);
+ }
+
+ read = getline(&line, &n, fp);
+
+ }
+
+ }else{
+
+ read = getline(&line, &n, fp);
+
+ }
+
+ }else{
+
+ read = getline(&line, &n, fp);
+
+ }
+
+ }
+
+ if(compile_unit_found == 0){
+ XBT_INFO("Your program must be compiled with -g");
+ xbt_abort();
+ }
+
+ if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug))
+ 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);
+}
+
+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;
+
+ }
+
+}
