X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/f3971a8d8941bced71760fe7f298a79c234ed6d2..a87452694ee73de10e25b45b9e2489904836a8ee:/src/mc/mc_dwarf.c diff --git a/src/mc/mc_dwarf.c b/src/mc/mc_dwarf.c index 94f05130ba..696f1d04e8 100644 --- a/src/mc/mc_dwarf.c +++ b/src/mc/mc_dwarf.c @@ -50,11 +50,11 @@ static uint64_t MC_dwarf_array_element_count(Dwarf_Die* die, Dwarf_Die* unit); * \param unit the DIE of the compile unit of the current DIE * \param frame containg frame if any */ -static void MC_dwarf_handle_die(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame); +static void MC_dwarf_handle_die(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame, const char* namespace); /** \brief Process a type DIE */ -static void MC_dwarf_handle_type_die(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit); +static void MC_dwarf_handle_type_die(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame, const char* namespace); /** \brief Calls MC_dwarf_handle_die on all childrend of the given die * @@ -63,7 +63,7 @@ static void MC_dwarf_handle_type_die(mc_object_info_t info, Dwarf_Die* die, Dwar * \param unit the DIE of the compile unit of the current DIE * \param frame containg frame if any */ -static void MC_dwarf_handle_children(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame); +static void MC_dwarf_handle_children(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame, const char* namespace); /** \brief Handle a variable (DW_TAG_variable or other) * @@ -72,7 +72,7 @@ static void MC_dwarf_handle_children(mc_object_info_t info, Dwarf_Die* die, Dwar * \param unit the DIE of the compile unit of the current DIE * \param frame containg frame if any */ -static void MC_dwarf_handle_variable_die(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame); +static void MC_dwarf_handle_variable_die(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame, const char* namespace); /** \brief Convert a libdw DWARF expression into a MC representation of the location * @@ -98,7 +98,7 @@ const char* MC_dwarf_attrname(int attr) { switch (attr) { #include "mc_dwarf_attrnames.h" default: - return "DW_AT_unkown"; + return "DW_AT_unknown"; } } @@ -113,21 +113,22 @@ const char* MC_dwarf_tagname(int tag) { case DW_TAG_invalid: return "DW_TAG_invalid"; default: - return "DW_TAG_unkown"; + return "DW_TAG_unknown"; } } /** \brief A class of DWARF tags (DW_TAG_*) */ typedef enum mc_tag_class { - mc_tag_unkonwn, + mc_tag_unknown, mc_tag_type, mc_tag_subprogram, mc_tag_variable, - mc_tag_scope + mc_tag_scope, + mc_tag_namespace } mc_tag_class; -static mc_tag_class MC_dwarg_tag_classify(int tag) { +static mc_tag_class MC_dwarf_tag_classify(int tag) { switch (tag) { case DW_TAG_array_type: @@ -166,8 +167,11 @@ static mc_tag_class MC_dwarg_tag_classify(int tag) { case DW_TAG_inlined_subroutine: return mc_tag_scope; + case DW_TAG_namespace: + return mc_tag_namespace; + default: - return mc_tag_unkonwn; + return mc_tag_unknown; } } @@ -618,6 +622,11 @@ static void MC_dwarf_add_members(mc_object_info_t info, Dwarf_Die* die, Dwarf_Di type->members = xbt_dynar_new(sizeof(dw_type_t), (void(*)(void*))dw_type_free); for (res=dwarf_child(die, &child); res==0; res=dwarf_siblingof(&child,&child)) { if (dwarf_tag(&child)==DW_TAG_member) { + + // Skip compile time constants: + if(dwarf_hasattr(&child, DW_AT_const_value)) + continue; + // TODO, we should use another type (because is is not a type but a member) dw_type_t member = xbt_new0(s_dw_type_t, 1); member->type = -1; @@ -658,7 +667,7 @@ static void MC_dwarf_add_members(mc_object_info_t info, Dwarf_Die* die, Dwarf_Di * \param unit compilation unit of the current DIE * \return MC representation of the type */ -static dw_type_t MC_dwarf_die_to_type(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit) { +static dw_type_t MC_dwarf_die_to_type(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame, const char* namespace) { dw_type_t type = xbt_new0(s_dw_type_t, 1); type->type = -1; @@ -711,13 +720,18 @@ static dw_type_t MC_dwarf_die_to_type(mc_object_info_t info, Dwarf_Die* die, Dwa case DW_TAG_union_type: case DW_TAG_class_type: MC_dwarf_add_members(info, die, unit, type); + char* new_namespace = namespace == NULL ? xbt_strdup(type->name) + : bprintf("%s::%s", namespace, type->name); + MC_dwarf_handle_children(info, die, unit, frame, new_namespace); + free(new_namespace); + break; } return type; } -static void MC_dwarf_handle_type_die(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit) { - dw_type_t type = MC_dwarf_die_to_type(info, die, unit); +static void MC_dwarf_handle_type_die(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame, const char* namespace) { + dw_type_t type = MC_dwarf_die_to_type(info, die, unit, frame, namespace); char* key = bprintf("%" PRIx64, (uint64_t) type->id); xbt_dict_set(info->types, key, type, NULL); @@ -888,11 +902,15 @@ static dw_location_t MC_dwarf_get_expression(Dwarf_Op* expr, size_t len) { static int mc_anonymous_variable_index = 0; -static dw_variable_t MC_die_to_variable(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame) { - // Drop declaration: +static dw_variable_t MC_die_to_variable(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame, const char* namespace) { + // Skip declarations: if (MC_dwarf_attr_flag(die, DW_AT_declaration, false)) return NULL; + // Skip compile time constants: + if(dwarf_hasattr(die, DW_AT_const_value)) + return NULL; + Dwarf_Attribute attr_location; if (dwarf_attr(die, DW_AT_location, &attr_location)==NULL) { // No location: do not add it ? @@ -902,7 +920,10 @@ static dw_variable_t MC_die_to_variable(mc_object_info_t info, Dwarf_Die* die, D dw_variable_t variable = xbt_new0(s_dw_variable_t, 1); variable->dwarf_offset = dwarf_dieoffset(die); variable->global = frame == NULL; // Can be override base on DW_AT_location - variable->name = xbt_strdup(MC_dwarf_attr_string(die, DW_AT_name)); + + const char* name = MC_dwarf_attr_string(die, DW_AT_name); + variable->name = xbt_strdup(name); + variable->type_origin = MC_dwarf_at_type(die); int klass = MC_dwarf_form_get_class(dwarf_whatform(&attr_location)); @@ -941,6 +962,31 @@ static dw_variable_t MC_die_to_variable(mc_object_info_t info, Dwarf_Die* die, D klass, klass, (void*) variable->dwarf_offset, variable->name); } + // Handle start_scope: + if (dwarf_hasattr(die, DW_AT_start_scope)) { + Dwarf_Attribute attr; + dwarf_attr(die, DW_AT_start_scope, &attr); + int form = dwarf_whatform(&attr); + int klass = MC_dwarf_form_get_class(form); + switch(klass) { + case MC_DW_CLASS_CONSTANT: + { + Dwarf_Word value; + variable->start_scope = dwarf_formudata(&attr, &value) == 0 ? (size_t) value : 0; + break; + } + default: + xbt_die("Unhandled form 0x%x, class 0x%X for DW_AT_start_scope of variable %s", + form, klass, name==NULL ? "?" : name); + } + } + + if(namespace && variable->global) { + char* old_name = variable->name; + variable->name = bprintf("%s::%s", namespace, old_name); + free(old_name); + } + // The current code needs a variable name, // generate a fake one: if(!variable->name) { @@ -950,20 +996,20 @@ static dw_variable_t MC_die_to_variable(mc_object_info_t info, Dwarf_Die* die, D return variable; } -static void MC_dwarf_handle_variable_die(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame) { - dw_variable_t variable = MC_die_to_variable(info, die, unit, frame); +static void MC_dwarf_handle_variable_die(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame, const char* namespace) { + dw_variable_t variable = MC_die_to_variable(info, die, unit, frame, namespace); if(variable==NULL) return; MC_dwarf_register_variable(info, frame, variable); } -static void MC_dwarf_handle_subprogram_die(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t parent_frame) { +static void MC_dwarf_handle_subprogram_die(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t parent_frame, const char* namespace) { dw_frame_t frame = xbt_new0(s_dw_frame_t, 1); frame->start = dwarf_dieoffset(die); const char* name = MC_dwarf_attr_string(die, DW_AT_name); - frame->name = xbt_strdup(name); + frame->name = namespace ? bprintf("%s::%s", namespace, name) : xbt_strdup(name); // This is the base address for DWARF addresses. // Relocated addresses are offset from this base address. @@ -977,39 +1023,49 @@ static void MC_dwarf_handle_subprogram_die(mc_object_info_t info, Dwarf_Die* die frame->frame_base = MC_dwarf_at_location(info, die, DW_AT_frame_base); frame->end = -1; // This one is now useless: - // Handle children: - MC_dwarf_handle_children(info, die, unit, frame); - // Register it: xbt_dynar_push(info->subprograms, &frame); + + // Handle children: + MC_dwarf_handle_children(info, die, unit, frame, namespace); +} + +static void mc_dwarf_handle_namespace_die( + mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame, const char* namespace) { + const char* name = MC_dwarf_attr_string(die, DW_AT_name); + if(frame) + xbt_die("Unexpected namespace in a subprogram"); + char* new_namespace = namespace == NULL ? xbt_strdup(name) + : bprintf("%s::%s", namespace, name); + MC_dwarf_handle_children(info, die, unit, frame, new_namespace); } -static void MC_dwarf_handle_children(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame) { +static void MC_dwarf_handle_children(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame, const char* namespace) { Dwarf_Die child; int res; for (res=dwarf_child(die, &child); res==0; res=dwarf_siblingof(&child,&child)) { - MC_dwarf_handle_die(info, &child, unit, frame); + MC_dwarf_handle_die(info, &child, unit, frame, namespace); } } -static void MC_dwarf_handle_die(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame) { +static void MC_dwarf_handle_die(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame, const char* namespace) { int tag = dwarf_tag(die); - mc_tag_class klass = MC_dwarg_tag_classify(tag); + mc_tag_class klass = MC_dwarf_tag_classify(tag); switch (klass) { // Type: case mc_tag_type: - MC_dwarf_handle_type_die(info, die, unit); + MC_dwarf_handle_type_die(info, die, unit, frame, namespace); break; // Program: case mc_tag_subprogram: - MC_dwarf_handle_subprogram_die(info, die, unit, frame); + MC_dwarf_handle_subprogram_die(info, die, unit, frame, namespace); return; // Variable: case mc_tag_variable: - MC_dwarf_handle_variable_die(info, die, unit, frame); + MC_dwarf_handle_variable_die(info, die, unit, frame, namespace); break; // Scope: @@ -1017,6 +1073,10 @@ static void MC_dwarf_handle_die(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die // TODO break; + case mc_tag_namespace: + mc_dwarf_handle_namespace_die(info, die, unit, frame, namespace); + break; + default: break; @@ -1043,7 +1103,7 @@ void MC_dwarf_get_variables(mc_object_info_t info) { Dwarf_Die child; int res; for (res=dwarf_child(&unit_die, &child); res==0; res=dwarf_siblingof(&child,&child)) { - MC_dwarf_handle_die(info, &child, &unit_die, NULL); + MC_dwarf_handle_die(info, &child, &unit_die, NULL, NULL); } } offset = next_offset;