-/* Copyright (c) 2008-2013. The SimGrid Team.
+/* Copyright (c) 2008-2014. The SimGrid Team.
* All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
mc_object_info_t mc_libsimgrid_info = NULL;
mc_object_info_t mc_binary_info = NULL;
+mc_object_info_t mc_object_infos[2] = { NULL, NULL };
+size_t mc_object_infos_size = 2;
+
/* Ignore mechanism */
extern xbt_dynar_t mc_heap_comparison_ignore;
extern xbt_dynar_t stacks_areas;
/************************** Free functions *************************/
-static void dw_location_free(dw_location_t l){
- if(l){
- if(l->type == e_dw_loclist)
- xbt_dynar_free(&(l->location.loclist));
- else if(l->type == e_dw_compose)
- xbt_dynar_free(&(l->location.compose));
- else if(l->type == e_dw_arithmetic)
- xbt_free(l->location.arithmetic);
-
- xbt_free(l);
- }
-}
-
-static void dw_location_entry_free(dw_location_entry_t e){
- dw_location_free(e->location);
- xbt_free(e);
+void mc_frame_free(dw_frame_t frame){
+ xbt_free(frame->name);
+ mc_dwarf_location_list_clear(&(frame->frame_base));
+ xbt_dynar_free(&(frame->variables));
+ xbt_dynar_free(&(frame->scopes));
+ xbt_free(frame);
}
void dw_type_free(dw_type_t t){
xbt_free(t->name);
xbt_free(t->dw_type_id);
xbt_dynar_free(&(t->members));
+ mc_dwarf_expression_clear(&t->location);
xbt_free(t);
}
-static void dw_type_free_voidp(void *t){
- dw_type_free((dw_type_t) * (void **) t);
-}
-
void dw_variable_free(dw_variable_t v){
if(v){
xbt_free(v->name);
xbt_free(v->type_origin);
- if(!v->global)
- dw_location_free(v->location);
+
+ if(v->locations.locations)
+ mc_dwarf_location_list_clear(&v->locations);
xbt_free(v);
}
}
// ***** object_info
+
+
mc_object_info_t MC_new_object_info(void) {
mc_object_info_t res = xbt_new0(s_mc_object_info_t, 1);
- res->subprograms = xbt_dynar_new(sizeof(dw_frame_t), NULL);
+ res->subprograms = xbt_dict_new_homogeneous((void (*)(void*))mc_frame_free);
res->global_variables = xbt_dynar_new(sizeof(dw_variable_t), dw_variable_free_voidp);
- res->types = xbt_dict_new_homogeneous(NULL);
- res->types_by_name = xbt_dict_new_homogeneous(NULL);
+ res->types = xbt_dict_new_homogeneous((void (*)(void*))dw_type_free);
+ res->full_types_by_name = xbt_dict_new_homogeneous(NULL);
return res;
}
void MC_free_object_info(mc_object_info_t* info) {
xbt_free(&(*info)->file_name);
- xbt_dynar_free(&(*info)->subprograms);
+ xbt_dict_free(&(*info)->subprograms);
xbt_dynar_free(&(*info)->global_variables);
xbt_dict_free(&(*info)->types);
- xbt_dict_free(&(*info)->types_by_name);
+ xbt_dict_free(&(*info)->full_types_by_name);
xbt_free(info);
xbt_dynar_free(&(*info)->functions_index);
*info = NULL;
// ***** Helpers
void* MC_object_base_address(mc_object_info_t info) {
+ if(info->flags & MC_OBJECT_INFO_EXECUTABLE)
+ return 0;
void* result = info->start_exec;
if(info->start_rw!=NULL && result > (void*) info->start_rw) result = info->start_rw;
if(info->start_ro!=NULL && result > (void*) info->start_ro) result = info->start_ro;
// Populate the array:
dw_frame_t frame = NULL;
- unsigned cursor = 0;
- xbt_dynar_foreach(info->subprograms, cursor, frame) {
+ xbt_dict_cursor_t cursor;
+ char* key;
+ xbt_dict_foreach(info->subprograms, cursor, key, frame) {
if(frame->low_pc==NULL)
continue;
s_mc_function_index_item_t entry;
}
mc_object_info_t MC_ip_find_object_info(void* ip) {
- mc_object_info_t infos[2] = { mc_binary_info, mc_libsimgrid_info };
- size_t n = 2;
size_t i;
- for(i=0; i!=n; ++i) {
- if(ip >= (void*)infos[i]->start_exec && ip <= (void*)infos[i]->end_exec) {
- return infos[i];
+ for(i=0; i!=mc_object_infos_size; ++i) {
+ if(ip >= (void*)mc_object_infos[i]->start_exec && ip <= (void*)mc_object_infos[i]->end_exec) {
+ return mc_object_infos[i];
}
}
return NULL;
int k = i + ((j-i)/2);
if(ip < base[k].low_pc) {
j = k-1;
- } else if(ip > base[k].high_pc) {
+ } else if(ip >= base[k].high_pc) {
i = k+1;
} else {
return base[k].function;
}
}
-static void MC_post_process_functions(mc_object_info_t info) {
+static void mc_post_process_scope(mc_object_info_t info, dw_frame_t scope) {
+
+ if(scope->tag == DW_TAG_inlined_subroutine) {
+
+ // Attach correct namespaced name in inlined subroutine:
+ char* key = bprintf("%" PRIx64, (uint64_t) scope->abstract_origin_id);
+ dw_frame_t abstract_origin = xbt_dict_get_or_null(info->subprograms, key);
+ xbt_assert(abstract_origin, "Could not lookup abstract origin %s", key);
+ xbt_free(key);
+ scope->name = xbt_strdup(abstract_origin->name);
+
+ }
+
+ // Direct:
unsigned cursor = 0;
- dw_frame_t function = NULL;
- xbt_dynar_foreach(info->subprograms, cursor, function) {
- unsigned cursor2 = 0;
- dw_variable_t variable = NULL;
- xbt_dynar_foreach(function->variables, cursor2, variable) {
- if(variable->type_origin) {
- variable->type = xbt_dict_get_or_null(info->types, variable->type_origin);
- }
+ dw_variable_t variable = NULL;
+ xbt_dynar_foreach(scope->variables, cursor, variable) {
+ if(variable->type_origin) {
+ variable->type = xbt_dict_get_or_null(info->types, variable->type_origin);
}
}
+
+ // Recursive post-processing of nested-scopes:
+ dw_frame_t nested_scope = NULL;
+ xbt_dynar_foreach(scope->scopes, cursor, nested_scope)
+ mc_post_process_scope(info, nested_scope);
+
+}
+
+static void MC_post_process_functions(mc_object_info_t info) {
+ xbt_dict_cursor_t cursor;
+ char* key;
+ dw_frame_t subprogram = NULL;
+ xbt_dict_foreach(info->subprograms, cursor, key, subprogram) {
+ mc_post_process_scope(info, subprogram);
+ }
}
/** \brief Finds informations about a given shared object/executable */
/*************************************************************************/
-static dw_location_t MC_dwarf_get_location(xbt_dict_t location_list, char *expr){
-
- dw_location_t loc = xbt_new0(s_dw_location_t, 1);
-
- if(location_list != NULL){
-
- char *key = bprintf("%d", (int)strtoul(expr, NULL, 16));
- loc->type = e_dw_loclist;
- loc->location.loclist = (xbt_dynar_t)xbt_dict_get_or_null(location_list, key);
- if(loc->location.loclist == NULL)
- XBT_INFO("Key not found in loclist");
- xbt_free(key);
- return loc;
-
- }else{
-
- int cursor = 0;
- char *tok = NULL, *tok2 = NULL;
-
- xbt_dynar_t tokens1 = xbt_str_split(expr, ";");
- xbt_dynar_t tokens2;
-
- loc->type = e_dw_compose;
- loc->location.compose = xbt_dynar_new(sizeof(dw_location_t), NULL);
-
- while(cursor < xbt_dynar_length(tokens1)){
-
- tok = xbt_dynar_get_as(tokens1, cursor, char*);
- tokens2 = xbt_str_split(tok, " ");
- tok2 = xbt_dynar_get_as(tokens2, 0, char*);
-
- if(strncmp(tok2, "DW_OP_reg", 9) == 0){
- dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
- new_element->type = e_dw_register;
- new_element->location.reg = atoi(strtok(tok2, "DW_OP_reg"));
- xbt_dynar_push(loc->location.compose, &new_element);
- }else if(strcmp(tok2, "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(tokens2, xbt_dynar_length(tokens2) - 1, char*));
- xbt_dynar_push(loc->location.compose, &new_element);
- }else if(strncmp(tok2, "DW_OP_breg", 10) == 0){
- dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
- new_element->type = e_dw_bregister_op;
- new_element->location.breg_op.reg = atoi(strtok(tok2, "DW_OP_breg"));
- new_element->location.breg_op.offset = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*));
- xbt_dynar_push(loc->location.compose, &new_element);
- }else if(strncmp(tok2, "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(tok2, "DW_OP_lit"));
- xbt_dynar_push(loc->location.compose, &new_element);
- }else if(strcmp(tok2, "DW_OP_piece:") == 0){
- dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
- new_element->type = e_dw_piece;
- new_element->location.piece = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*));
- xbt_dynar_push(loc->location.compose, &new_element);
- }else if(strcmp(tok2, "DW_OP_plus_uconst:") == 0){
- dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
- new_element->type = e_dw_plus_uconst;
- new_element->location.plus_uconst = atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char *));
- xbt_dynar_push(loc->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){
- dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
- new_element->type = e_dw_arithmetic;
- new_element->location.arithmetic = strdup(strtok(tok2, "DW_OP_"));
- xbt_dynar_push(loc->location.compose, &new_element);
- }else if(strcmp(tok, "DW_OP_stack_value") == 0){
- }else if(strcmp(tok2, "DW_OP_deref_size:") == 0){
- dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
- new_element->type = e_dw_deref;
- new_element->location.deref_size = (unsigned int short) atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*));
- xbt_dynar_push(loc->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(loc->location.compose, &new_element);
- }else if(strcmp(tok2, "DW_OP_constu:") == 0){
- dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
- new_element->type = e_dw_uconstant;
- new_element->location.uconstant.bytes = 1;
- new_element->location.uconstant.value = (unsigned long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)));
- xbt_dynar_push(loc->location.compose, &new_element);
- }else if(strcmp(tok2, "DW_OP_consts:") == 0){
- dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
- new_element->type = e_dw_sconstant;
- new_element->location.sconstant.bytes = 1;
- new_element->location.sconstant.value = (long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)));
- xbt_dynar_push(loc->location.compose, &new_element);
- }else if(strcmp(tok2, "DW_OP_const1u:") == 0 ||
- strcmp(tok2, "DW_OP_const2u:") == 0 ||
- strcmp(tok2, "DW_OP_const4u:") == 0 ||
- strcmp(tok2, "DW_OP_const8u:") == 0){
- dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
- new_element->type = e_dw_uconstant;
- new_element->location.uconstant.bytes = tok2[11] - '0';
- new_element->location.uconstant.value = (unsigned long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)));
- xbt_dynar_push(loc->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_sconstant;
- new_element->location.sconstant.bytes = tok2[11] - '0';
- new_element->location.sconstant.value = (long int)(atoi(xbt_dynar_get_as(tokens2, xbt_dynar_length(tokens2) - 1, char*)));
- xbt_dynar_push(loc->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(loc->location.compose, &new_element);
- }
-
- cursor++;
- xbt_dynar_free(&tokens2);
-
- }
-
- xbt_dynar_free(&tokens1);
-
- return loc;
-
- }
-
-}
-
-
-/** \brief Finds a frame (DW_TAG_subprogram) from an DWARF offset in the rangd of this subprogram
- *
- * The offset can be an offset of a child DW_TAG_variable.
- */
-static dw_frame_t MC_dwarf_get_frame_by_offset(xbt_dict_t all_variables, unsigned long int offset){
-
- xbt_dict_cursor_t cursor = NULL;
- char *name;
- dw_frame_t res;
-
- xbt_dict_foreach(all_variables, cursor, name, res) {
- if(offset >= res->start && offset < res->end){
- xbt_dict_cursor_free(&cursor);
- return res;
- }
- }
-
- xbt_dict_cursor_free(&cursor);
- return NULL;
-
-}
-
-static dw_variable_t MC_dwarf_get_variable_by_name(dw_frame_t frame, char *var){
-
- unsigned int cursor = 0;
- dw_variable_t current_var;
-
- xbt_dynar_foreach(frame->variables, cursor, current_var){
- if(strcmp(var, current_var->name) == 0)
- return current_var;
- }
-
- return NULL;
-}
-
static int MC_dwarf_get_variable_index(xbt_dynar_t variables, char* var, void *address){
if(xbt_dynar_is_empty(variables))
MC_UNSET_RAW_MEM;
}
-static void MC_ignore_local_variable_in_object(const char *var_name, const char *frame_name, mc_object_info_t info) {
- unsigned cursor2;
- dw_frame_t frame;
- int start, end;
- int cursor = 0;
- dw_variable_t current_var;
+/** \brief Ignore a local variable in a scope
+ *
+ * Ignore all instances of variables with a given name in
+ * any (possibly inlined) subprogram with a given namespaced
+ * name.
+ *
+ * \param var_name Name of the local variable (or parameter to ignore)
+ * \param subprogram_name Name of the subprogram fo ignore (NULL for any)
+ * \param subprogram (possibly inlined) Subprogram of the scope
+ * \param scope Current scope
+ */
+static void mc_ignore_local_variable_in_scope(
+ const char *var_name, const char *subprogram_name,
+ dw_frame_t subprogram, dw_frame_t scope) {
+ // Processing of direct variables:
- xbt_dynar_foreach(info->subprograms, cursor2, frame) {
+ // If the current subprogram matche the given name:
+ if(subprogram_name==NULL || strcmp(subprogram_name, subprogram->name)==0) {
- if(frame_name && strcmp(frame_name, frame->name))
- continue;
+ // Try to find the variable and remove it:
+ int start = 0;
+ int end = xbt_dynar_length(scope->variables) - 1;
- start = 0;
- end = xbt_dynar_length(frame->variables) - 1;
+ // Dichotomic search:
while(start <= end){
- cursor = (start + end) / 2;
- current_var = (dw_variable_t)xbt_dynar_get_as(frame->variables, cursor, dw_variable_t);
+ int cursor = (start + end) / 2;
+ dw_variable_t current_var = (dw_variable_t)xbt_dynar_get_as(scope->variables, cursor, dw_variable_t);
int compare = strcmp(current_var->name, var_name);
if(compare == 0){
- xbt_dynar_remove_at(frame->variables, cursor, NULL);
+ // Variable found, remove it:
+ xbt_dynar_remove_at(scope->variables, cursor, NULL);
+
+ // and start again:
start = 0;
- end = xbt_dynar_length(frame->variables) - 1;
+ end = xbt_dynar_length(scope->variables) - 1;
}else if(compare < 0){
start = cursor + 1;
}else{
end = cursor - 1;
}
}
+
+ }
+
+ // And recursive processing in nested scopes:
+ unsigned cursor = 0;
+ dw_frame_t nested_scope = NULL;
+ xbt_dynar_foreach(scope->scopes, cursor, nested_scope) {
+ // The new scope may be an inlined subroutine, in this case we want to use its
+ // namespaced name in recursive calls:
+ dw_frame_t nested_subprogram = nested_scope->tag == DW_TAG_inlined_subroutine ? nested_scope : subprogram;
+
+ mc_ignore_local_variable_in_scope(var_name, subprogram_name, nested_subprogram, nested_scope);
+ }
+}
+
+static void MC_ignore_local_variable_in_object(const char *var_name, const char *subprogram_name, mc_object_info_t info) {
+ xbt_dict_cursor_t cursor2;
+ dw_frame_t frame;
+ char* key;
+ xbt_dict_foreach(info->subprograms, cursor2, key, frame) {
+ mc_ignore_local_variable_in_scope(var_name, subprogram_name, frame, frame);
}
}
/*********************************************************************************/
static void MC_post_process_object_info(mc_object_info_t info) {
- mc_object_info_t other_info = info == mc_binary_info ? mc_libsimgrid_info : mc_binary_info;
xbt_dict_cursor_t cursor = NULL;
char* key = NULL;
dw_type_t type = NULL;
xbt_dict_foreach(info->types, cursor, key, type){
+
+ // Resolve full_type:
if(type->name && type->byte_size == 0) {
- type->other_object_same_type = xbt_dict_get_or_null(other_info->types_by_name, type->name);
+ for(size_t i=0; i!=mc_object_infos_size; ++i) {
+ dw_type_t same_type = xbt_dict_get_or_null(mc_object_infos[i]->full_types_by_name, type->name);
+ if(same_type && same_type->name && same_type->byte_size) {
+ type->full_type = same_type;
+ break;
+ }
+ }
}
+
}
}
/* Get local variables for state equality detection */
mc_binary_info = MC_find_object_info(maps, xbt_binary_name, 1);
+ mc_object_infos[0] = mc_binary_info;
+
mc_libsimgrid_info = MC_find_object_info(maps, libsimgrid_path, 0);
+ mc_object_infos[1] = mc_libsimgrid_info;
// Use information of the other objects:
MC_post_process_object_info(mc_binary_info);
