X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/bfb24344a810f8b14415083483fea1b65ff01eb7..c3a137262e9f3aa15b16005208a42ec8315d98b0:/src/mc/mc_dwarf.cpp diff --git a/src/mc/mc_dwarf.cpp b/src/mc/mc_dwarf.cpp index cd1f9d1755..3b8e900e25 100644 --- a/src/mc/mc_dwarf.cpp +++ b/src/mc/mc_dwarf.cpp @@ -1,4 +1,4 @@ -/* Copyright (c) 2008-2014. The SimGrid Team. +/* Copyright (c) 2008-2015. The SimGrid Team. * All rights reserved. */ /* This program is free software; you can redistribute it and/or modify it @@ -15,11 +15,18 @@ #include #include +#include #include #include +#include + #include "mc_object_info.h" #include "mc_private.h" +#include "mc_process.h" + +#include "mc/ObjectInformation.hpp" +#include "mc/Variable.hpp" XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_dwarf, mc, "DWARF processing"); @@ -58,14 +65,14 @@ 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, mc_frame_t frame, +static void MC_dwarf_handle_die(simgrid::mc::ObjectInformation* info, Dwarf_Die * die, + Dwarf_Die * unit, simgrid::mc::Frame* frame, const char *ns); /** \brief Process a type DIE */ -static void MC_dwarf_handle_type_die(mc_object_info_t info, Dwarf_Die * die, - Dwarf_Die * unit, mc_frame_t frame, +static void MC_dwarf_handle_type_die(simgrid::mc::ObjectInformation* info, Dwarf_Die * die, + Dwarf_Die * unit, simgrid::mc::Frame* frame, const char *ns); /** \brief Calls MC_dwarf_handle_die on all childrend of the given die @@ -75,8 +82,8 @@ static void MC_dwarf_handle_type_die(mc_object_info_t info, Dwarf_Die * die, * \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, mc_frame_t frame, +static void MC_dwarf_handle_children(simgrid::mc::ObjectInformation* info, Dwarf_Die * die, + Dwarf_Die * unit, simgrid::mc::Frame* frame, const char *ns); /** \brief Handle a variable (DW_TAG_variable or other) @@ -86,8 +93,8 @@ static void MC_dwarf_handle_children(mc_object_info_t info, Dwarf_Die * die, * \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, mc_frame_t frame, +static void MC_dwarf_handle_variable_die(simgrid::mc::ObjectInformation* info, Dwarf_Die * die, + Dwarf_Die * unit, simgrid::mc::Frame* frame, const char *ns); /** \brief Get the DW_TAG_type of the DIE @@ -269,30 +276,26 @@ static const char *MC_dwarf_at_linkage_name(Dwarf_Die * die) static Dwarf_Off MC_dwarf_attr_dieoffset(Dwarf_Die * die, int attribute) { Dwarf_Attribute attr; - if (dwarf_hasattr_integrate(die, attribute)) { - dwarf_attr_integrate(die, attribute, &attr); - Dwarf_Die subtype_die; - if (dwarf_formref_die(&attr, &subtype_die) == NULL) { - xbt_die("Could not find DIE"); - } - return dwarf_dieoffset(&subtype_die); - } else + if (dwarf_hasattr_integrate(die, attribute) == 0) return 0; + dwarf_attr_integrate(die, attribute, &attr); + Dwarf_Die subtype_die; + if (dwarf_formref_die(&attr, &subtype_die) == NULL) + xbt_die("Could not find DIE"); + return dwarf_dieoffset(&subtype_die); } static Dwarf_Off MC_dwarf_attr_integrate_dieoffset(Dwarf_Die * die, int attribute) { Dwarf_Attribute attr; - if (dwarf_hasattr_integrate(die, attribute)) { - dwarf_attr_integrate(die, DW_AT_type, &attr); - Dwarf_Die subtype_die; - if (dwarf_formref_die(&attr, &subtype_die) == NULL) { - xbt_die("Could not find DIE"); - } - return dwarf_dieoffset(&subtype_die); - } else + if (dwarf_hasattr_integrate(die, attribute) == 0) return 0; + dwarf_attr_integrate(die, DW_AT_type, &attr); + Dwarf_Die subtype_die; + if (dwarf_formref_die(&attr, &subtype_die) == NULL) + xbt_die("Could not find DIE"); + return dwarf_dieoffset(&subtype_die); } /** \brief Find the type/subtype (DW_AT_type) for a DIE @@ -397,24 +400,22 @@ static uint64_t MC_dwarf_subrange_element_count(Dwarf_Die * die, MC_dwarf_die_tagname(die)); // Use DW_TAG_count if present: - if (dwarf_hasattr_integrate(die, DW_AT_count)) { + if (dwarf_hasattr_integrate(die, DW_AT_count)) return MC_dwarf_attr_integrate_uint(die, DW_AT_count, 0); - } // Otherwise compute DW_TAG_upper_bound-DW_TAG_lower_bound + 1: - if (!dwarf_hasattr_integrate(die, DW_AT_upper_bound)) { + if (!dwarf_hasattr_integrate(die, DW_AT_upper_bound)) // This is not really 0, but the code expects this (we do not know): return 0; - } + uint64_t upper_bound = MC_dwarf_attr_integrate_uint(die, DW_AT_upper_bound, -1); uint64_t lower_bound = 0; - if (dwarf_hasattr_integrate(die, DW_AT_lower_bound)) { + if (dwarf_hasattr_integrate(die, DW_AT_lower_bound)) lower_bound = MC_dwarf_attr_integrate_uint(die, DW_AT_lower_bound, -1); - } else { + else lower_bound = MC_dwarf_default_lower_bound(dwarf_srclang(unit)); - } return upper_bound - lower_bound + 1; } @@ -440,9 +441,8 @@ static uint64_t MC_dwarf_array_element_count(Dwarf_Die * die, Dwarf_Die * unit) res = dwarf_siblingof(&child, &child)) { int child_tag = dwarf_tag(&child); if (child_tag == DW_TAG_subrange_type - || child_tag == DW_TAG_enumeration_type) { + || child_tag == DW_TAG_enumeration_type) result *= MC_dwarf_subrange_element_count(&child, unit); - } } return result; } @@ -465,7 +465,7 @@ static bool MC_compare_variable( return a.address < b.address; } -// ***** mc_type_t +// ***** simgrid::mc::Type* /** \brief Initialize the location of a member of a type * (DW_AT_data_member_location of a DW_TAG_member). @@ -474,22 +474,19 @@ static bool MC_compare_variable( * \param member the member of the type * \param child DIE of the member (DW_TAG_member) */ -static void MC_dwarf_fill_member_location(mc_type_t type, mc_type_t member, +static void MC_dwarf_fill_member_location(simgrid::mc::Type* type, simgrid::mc::Type* member, Dwarf_Die * child) { - if (dwarf_hasattr(child, DW_AT_data_bit_offset)) { + if (dwarf_hasattr(child, DW_AT_data_bit_offset)) xbt_die("Can't groke DW_AT_data_bit_offset."); - } if (!dwarf_hasattr_integrate(child, DW_AT_data_member_location)) { - if (type->type != DW_TAG_union_type) { - xbt_die - ("Missing DW_AT_data_member_location field in DW_TAG_member %s of type <%" - PRIx64 ">%s", member->name.c_str(), - (uint64_t) type->id, type->name.c_str()); - } else { + if (type->type == DW_TAG_union_type) return; - } + xbt_die + ("Missing DW_AT_data_member_location field in DW_TAG_member %s of type <%" + PRIx64 ">%s", member->name.c_str(), + (uint64_t) type->id, type->name.c_str()); } Dwarf_Attribute attr; @@ -503,12 +500,11 @@ static void MC_dwarf_fill_member_location(mc_type_t type, mc_type_t member, { Dwarf_Op *expr; size_t len; - if (dwarf_getlocation(&attr, &expr, &len)) { + if (dwarf_getlocation(&attr, &expr, &len)) xbt_die ("Could not read location expression DW_AT_data_member_location in DW_TAG_member %s of type <%" PRIx64 ">%s", MC_dwarf_attr_integrate_string(child, DW_AT_name), (uint64_t) type->id, type->name.c_str()); - } simgrid::mc::DwarfExpression(expr, expr+len); break; } @@ -537,11 +533,6 @@ static void MC_dwarf_fill_member_location(mc_type_t type, mc_type_t member, } -static void dw_type_free_voidp(void *t) -{ - delete *(mc_type_t*)t; -} - /** \brief Populate the list of members of a type * * \param info ELF object containing the type DIE @@ -549,8 +540,8 @@ static void dw_type_free_voidp(void *t) * \param unit DIE of the compilation unit containing the type DIE * \param type the type */ -static void MC_dwarf_add_members(mc_object_info_t info, Dwarf_Die * die, - Dwarf_Die * unit, mc_type_t type) +static void MC_dwarf_add_members(simgrid::mc::ObjectInformation* info, Dwarf_Die * die, + Dwarf_Die * unit, simgrid::mc::Type* type) { int res; Dwarf_Die child; @@ -583,17 +574,15 @@ static void MC_dwarf_add_members(mc_object_info_t info, Dwarf_Die * die, member.element_count = -1; member.type_id = MC_dwarf_at_type(&child); - if (dwarf_hasattr(&child, DW_AT_data_bit_offset)) { + if (dwarf_hasattr(&child, DW_AT_data_bit_offset)) xbt_die("Can't groke DW_AT_data_bit_offset."); - } MC_dwarf_fill_member_location(type, &member, &child); - if (!member.type_id) { + if (!member.type_id) xbt_die("Missing type for member %s of <%" PRIx64 ">%s", member.name.c_str(), (uint64_t) type->id, type->name.c_str()); - } type->members.push_back(std::move(member)); } @@ -608,18 +597,15 @@ static void MC_dwarf_add_members(mc_object_info_t info, Dwarf_Die * die, * \return MC representation of the type */ static simgrid::mc::Type MC_dwarf_die_to_type( - mc_object_info_t info, Dwarf_Die * die, - Dwarf_Die * unit, mc_frame_t frame, + simgrid::mc::ObjectInformation* info, Dwarf_Die * die, + Dwarf_Die * unit, simgrid::mc::Frame* frame, const char *ns) { - simgrid::mc::Type type; - type.type = -1; + type.type = dwarf_tag(die); type.name = std::string(); type.element_count = -1; - type.type = dwarf_tag(die); - // Global Offset type.id = dwarf_dieoffset(die); @@ -661,9 +647,8 @@ static simgrid::mc::Type MC_dwarf_die_to_type( || type.type == DW_TAG_structure_type || type.type == DW_TAG_class_type) { Dwarf_Word size; - if (dwarf_aggregate_size(die, &size) == 0) { + if (dwarf_aggregate_size(die, &size) == 0) type.byte_size = size; - } } switch (type.type) { @@ -692,8 +677,8 @@ static simgrid::mc::Type MC_dwarf_die_to_type( return std::move(type); } -static void MC_dwarf_handle_type_die(mc_object_info_t info, Dwarf_Die * die, - Dwarf_Die * unit, mc_frame_t frame, +static void MC_dwarf_handle_type_die(simgrid::mc::ObjectInformation* info, Dwarf_Die * die, + Dwarf_Die * unit, simgrid::mc::Frame* frame, const char *ns) { simgrid::mc::Type type = MC_dwarf_die_to_type(info, die, unit, frame, ns); @@ -705,8 +690,8 @@ static void MC_dwarf_handle_type_die(mc_object_info_t info, Dwarf_Die * die, static int mc_anonymous_variable_index = 0; static std::unique_ptr MC_die_to_variable( - mc_object_info_t info, Dwarf_Die * die, - Dwarf_Die * unit, mc_frame_t frame, + simgrid::mc::ObjectInformation* info, Dwarf_Die * die, + Dwarf_Die * unit, simgrid::mc::Frame* frame, const char *ns) { // Skip declarations: @@ -718,10 +703,9 @@ static std::unique_ptr MC_die_to_variable( return nullptr; Dwarf_Attribute attr_location; - if (dwarf_attr(die, DW_AT_location, &attr_location) == NULL) { + if (dwarf_attr(die, DW_AT_location, &attr_location) == NULL) // No location: do not add it ? return nullptr; - } std::unique_ptr variable = std::unique_ptr(new simgrid::mc::Variable()); @@ -816,8 +800,8 @@ static std::unique_ptr MC_die_to_variable( return std::move(variable); } -static void MC_dwarf_handle_variable_die(mc_object_info_t info, Dwarf_Die * die, - Dwarf_Die * unit, mc_frame_t frame, +static void MC_dwarf_handle_variable_die(simgrid::mc::ObjectInformation* info, Dwarf_Die * die, + Dwarf_Die * unit, simgrid::mc::Frame* frame, const char *ns) { std::unique_ptr variable = @@ -833,8 +817,8 @@ static void MC_dwarf_handle_variable_die(mc_object_info_t info, Dwarf_Die * die, xbt_die("No frame for this local variable"); } -static void MC_dwarf_handle_scope_die(mc_object_info_t info, Dwarf_Die * die, - Dwarf_Die * unit, mc_frame_t parent_frame, +static void MC_dwarf_handle_scope_die(simgrid::mc::ObjectInformation* info, Dwarf_Die * die, + Dwarf_Die * unit, simgrid::mc::Frame* parent_frame, const char *ns) { // TODO, handle DW_TAG_type/DW_TAG_location for DW_TAG_with_stmt @@ -859,8 +843,10 @@ static void MC_dwarf_handle_scope_die(mc_object_info_t info, Dwarf_Die * die, const char *name = MC_dwarf_attr_integrate_string(die, DW_AT_name); if(ns) frame.name = std::string(ns) + "::" + name; - else + else if (name) frame.name = name; + else + frame.name.clear(); } frame.abstract_origin_id = @@ -928,9 +914,9 @@ static void MC_dwarf_handle_scope_die(mc_object_info_t info, Dwarf_Die * die, parent_frame->scopes.push_back(std::move(frame)); } -static void mc_dwarf_handle_namespace_die(mc_object_info_t info, +static void mc_dwarf_handle_namespace_die(simgrid::mc::ObjectInformation* info, Dwarf_Die * die, Dwarf_Die * unit, - mc_frame_t frame, + simgrid::mc::Frame* frame, const char *ns) { const char *name = MC_dwarf_attr_integrate_string(die, DW_AT_name); @@ -942,8 +928,8 @@ static void mc_dwarf_handle_namespace_die(mc_object_info_t info, xbt_free(new_ns); } -static void MC_dwarf_handle_children(mc_object_info_t info, Dwarf_Die * die, - Dwarf_Die * unit, mc_frame_t frame, +static void MC_dwarf_handle_children(simgrid::mc::ObjectInformation* info, Dwarf_Die * die, + Dwarf_Die * unit, simgrid::mc::Frame* frame, const char *ns) { // For each child DIE: @@ -955,8 +941,8 @@ static void MC_dwarf_handle_children(mc_object_info_t info, Dwarf_Die * die, } } -static void MC_dwarf_handle_die(mc_object_info_t info, Dwarf_Die * die, - Dwarf_Die * unit, mc_frame_t frame, +static void MC_dwarf_handle_die(simgrid::mc::ObjectInformation* info, Dwarf_Die * die, + Dwarf_Die * unit, simgrid::mc::Frame* frame, const char *ns) { int tag = dwarf_tag(die); @@ -994,7 +980,7 @@ static void MC_dwarf_handle_die(mc_object_info_t info, Dwarf_Die * die, * Read the DWARf information of the EFFL object and populate the * lists of types, variables, functions. */ -void MC_dwarf_get_variables(mc_object_info_t info) +void MC_dwarf_get_variables(simgrid::mc::ObjectInformation* info) { int fd = open(info->file_name.c_str(), O_RDONLY); if (fd < 0) @@ -1007,20 +993,12 @@ void MC_dwarf_get_variables(mc_object_info_t info) Dwarf_Off offset = 0; Dwarf_Off next_offset = 0; size_t length; + while (dwarf_nextcu(dwarf, offset, &next_offset, &length, NULL, NULL, NULL) == 0) { Dwarf_Die unit_die; - if (dwarf_offdie(dwarf, offset + length, &unit_die) != NULL) { - - // For each child DIE: - 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, NULL); - } - - } + if (dwarf_offdie(dwarf, offset + length, &unit_die) != NULL) + MC_dwarf_handle_children(info, &unit_die, &unit_die, NULL, NULL); offset = next_offset; } @@ -1041,7 +1019,7 @@ static int MC_compare_frame_index_items(simgrid::mc::FunctionIndexEntry* a, return 1; } -static void MC_make_functions_index(mc_object_info_t info) +static void MC_make_functions_index(simgrid::mc::ObjectInformation* info) { info->functions_index.clear(); @@ -1058,30 +1036,26 @@ static void MC_make_functions_index(mc_object_info_t info) // Sort the array by low_pc: std::sort(info->functions_index.begin(), info->functions_index.end(), - [](simgrid::mc::FunctionIndexEntry& a, - simgrid::mc::FunctionIndexEntry& b) + [](simgrid::mc::FunctionIndexEntry const& a, + simgrid::mc::FunctionIndexEntry const& b) { return a.low_pc < b.low_pc; }); } -static void MC_post_process_variables(mc_object_info_t info) +static void MC_post_process_variables(simgrid::mc::ObjectInformation* info) { // Someone needs this to be sorted but who? std::sort(info->global_variables.begin(), info->global_variables.end(), MC_compare_variable); for(simgrid::mc::Variable& variable : info->global_variables) - if (variable.type_id) { - auto i = info->types.find(variable.type_id); - if (i != info->types.end()) - variable.type = &(i->second); - else - variable.type = nullptr; - } + if (variable.type_id) + variable.type = simgrid::util::find_map_ptr( + info->types, variable.type_id); } -static void mc_post_process_scope(mc_object_info_t info, mc_frame_t scope) +static void mc_post_process_scope(simgrid::mc::ObjectInformation* info, simgrid::mc::Frame* scope) { if (scope->tag == DW_TAG_inlined_subroutine) { @@ -1095,13 +1069,9 @@ static void mc_post_process_scope(mc_object_info_t info, mc_frame_t scope) // Direct: for (simgrid::mc::Variable& variable : scope->variables) - if (variable.type_id) { - auto i = info->types.find(variable.type_id); - if (i != info->types.end()) - variable.type = &(i->second); - else - variable.type = nullptr; - } + if (variable.type_id) + variable.type = simgrid::util::find_map_ptr( + info->types, variable.type_id); // Recursive post-processing of nested-scopes: for (simgrid::mc::Frame& nested_scope : scope->scopes) @@ -1109,39 +1079,28 @@ static void mc_post_process_scope(mc_object_info_t info, mc_frame_t scope) } -static void MC_post_process_functions(mc_object_info_t info) -{ - for (auto& entry : info->subprograms) - mc_post_process_scope(info, &entry.second); -} - - /** \brief Fill/lookup the "subtype" field. */ -static void MC_resolve_subtype(mc_object_info_t info, mc_type_t type) +static void MC_resolve_subtype(simgrid::mc::ObjectInformation* info, simgrid::mc::Type* type) { if (!type->type_id) return; - auto i = info->types.find(type->type_id); - if (i != info->types.end()) - type->subtype = &(i->second); - else { - type->subtype = nullptr; + type->subtype = simgrid::util::find_map_ptr(info->types, type->type_id); + if (type->subtype == nullptr) return; - } if (type->subtype->byte_size != 0) return; if (type->subtype->name.empty()) return; // Try to find a more complete description of the type: // We need to fix in order to support C++. - - auto j = info->full_types_by_name.find(type->subtype->name); - if (j != info->full_types_by_name.end()) - type->subtype = j->second; + simgrid::mc::Type** subtype = simgrid::util::find_map_ptr( + info->full_types_by_name, type->subtype->name); + if (subtype) + type->subtype = *subtype; } -static void MC_post_process_types(mc_object_info_t info) +static void MC_post_process_types(simgrid::mc::ObjectInformation* info) { // Lookup "subtype" field: for(auto& i : info->types) { @@ -1152,38 +1111,39 @@ static void MC_post_process_types(mc_object_info_t info) } /** \brief Finds informations about a given shared object/executable */ -std::shared_ptr MC_find_object_info( +std::shared_ptr MC_find_object_info( std::vector const& maps, const char *name, int executable) { - std::shared_ptr result = - std::make_shared(); + std::shared_ptr result = + std::make_shared(); if (executable) - result->flags |= MC_OBJECT_INFO_EXECUTABLE; + result->flags |= simgrid::mc::ObjectInformation::Executable; result->file_name = name; MC_find_object_address(maps, result.get()); MC_dwarf_get_variables(result.get()); MC_post_process_variables(result.get()); MC_post_process_types(result.get()); - MC_post_process_functions(result.get()); + for (auto& entry : result.get()->subprograms) + mc_post_process_scope(result.get(), &entry.second); MC_make_functions_index(result.get()); return std::move(result); } /*************************************************************************/ -void MC_post_process_object_info(mc_process_t process, mc_object_info_t info) +void MC_post_process_object_info(simgrid::mc::Process* process, simgrid::mc::ObjectInformation* info) { for (auto& i : info->types) { - mc_type_t type = &(i.second); - mc_type_t subtype = type; - while (subtype->type == DW_TAG_typedef || subtype->type == DW_TAG_volatile_type - || subtype->type == DW_TAG_const_type) { + simgrid::mc::Type* type = &(i.second); + simgrid::mc::Type* subtype = type; + while (subtype->type == DW_TAG_typedef + || subtype->type == DW_TAG_volatile_type + || subtype->type == DW_TAG_const_type) if (subtype->subtype) subtype = subtype->subtype; else break; - } // Resolve full_type: if (!subtype->name.empty() && subtype->byte_size == 0) {