From 9a759872fb8babf506d53114f95b8b06ff335854 Mon Sep 17 00:00:00 2001 From: Gabriel Corona Date: Fri, 2 Oct 2015 16:08:10 +0200 Subject: [PATCH 1/1] [mc] Really remove mc_libdw for now Some bits were not removed properly. --- src/mc/mc_libdw.cpp | 796 ------------------------------- tools/cmake/DefinePackages.cmake | 1 - 2 files changed, 797 deletions(-) delete mode 100644 src/mc/mc_libdw.cpp diff --git a/src/mc/mc_libdw.cpp b/src/mc/mc_libdw.cpp deleted file mode 100644 index 2e55f153b0..0000000000 --- a/src/mc/mc_libdw.cpp +++ /dev/null @@ -1,796 +0,0 @@ -/* Copyright (c) 2008-2015. The 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 -#include - -#include -#include -#include -#include - -#include - -#include - -#include "mc/Frame.hpp" -#include "mc/ObjectInformation.hpp" -#include "mc/Variable.hpp" - -#include "mc/mc_dwarf.hpp" -#include "mc/mc_libdw.hpp" - -XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_libdw, mc, "DWARF processing"); - -/** \brief Get the name of the tag of a given DIE - * - * \param die DIE - * \return name of the tag of this DIE - */ -static inline const char *MC_dwarf_die_tagname(Dwarf_Die * die) -{ - return MC_dwarf_tagname(dwarf_tag(die)); -} - -static -simgrid::mc::DwarfExpression MC_dwarf_expression(Dwarf_Op* ops, std::size_t len) -{ - simgrid::mc::DwarfExpression expression(len); - for (std::size_t i = 0; i != len; ++i) { - expression[i].atom = ops[i].atom; - expression[i].number = ops[i].number; - expression[i].number2 = ops[i].number2; - expression[i].offset = ops[i].offset; - } - return std::move(expression); -} - -static void mc_dwarf_location_list_init_libdw( - simgrid::mc::LocationList* list, simgrid::mc::ObjectInformation* info, - Dwarf_Die * die, Dwarf_Attribute * attr) -{ - list->clear(); - - ptrdiff_t offset = 0; - Dwarf_Addr base, start, end; - Dwarf_Op *ops; - size_t len; - - while (1) { - - offset = dwarf_getlocations(attr, offset, &base, &start, &end, &ops, &len); - if (offset == 0) - return; - else if (offset == -1) - xbt_die("Error while loading location list"); - - simgrid::mc::LocationListEntry entry; - entry.expression = MC_dwarf_expression(ops, len); - - void *base = info->base_address(); - // If start == 0, this is not a location list: - entry.lowpc = start == 0 ? NULL : (char *) base + start; - entry.highpc = start == 0 ? NULL : (char *) base + end; - - list->push_back(std::move(entry)); - } - -} - -// ***** Attributes - -/** \brief Get an attribute of a given DIE as a string - * - * \param die the DIE - * \param attribute attribute - * \return value of the given attribute of the given DIE - */ -static const char *MC_dwarf_attr_integrate_string(Dwarf_Die * die, - int attribute) -{ - Dwarf_Attribute attr; - if (!dwarf_attr_integrate(die, attribute, &attr)) { - return NULL; - } else { - return dwarf_formstring(&attr); - } -} - -/** \brief Get the linkage name of a DIE. - * - * Use either DW_AT_linkage_name or DW_AT_MIPS_linkage_name. - * DW_AT_linkage_name is standardized since DWARF 4. - * Before this version of DWARF, the MIPS extensions - * DW_AT_MIPS_linkage_name is used (at least by GCC). - * - * \param the DIE - * \return linkage name of the given DIE (or NULL) - * */ -static const char *MC_dwarf_at_linkage_name(Dwarf_Die * die) -{ - const char *name = MC_dwarf_attr_integrate_string(die, DW_AT_linkage_name); - if (!name) - name = MC_dwarf_attr_integrate_string(die, DW_AT_MIPS_linkage_name); - return name; -} - -static Dwarf_Off MC_dwarf_attr_dieoffset(Dwarf_Die * die, int attribute) -{ - Dwarf_Attribute attr; - 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) == 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 - * - * \param dit the DIE - * \return DW_AT_type reference as a global offset in hexadecimal (or NULL) - */ -static -std::uint64_t MC_dwarf_at_type(Dwarf_Die * die) -{ - return MC_dwarf_attr_integrate_dieoffset(die, DW_AT_type); -} - -static std::uint64_t MC_dwarf_attr_integrate_addr(Dwarf_Die * die, int attribute) -{ - Dwarf_Attribute attr; - if (dwarf_attr_integrate(die, attribute, &attr) == NULL) - return 0; - Dwarf_Addr value; - if (dwarf_formaddr(&attr, &value) == 0) - return (std::uint64_t) value; - else - return 0; -} - -static std::uint64_t MC_dwarf_attr_integrate_uint(Dwarf_Die * die, int attribute, - std::uint64_t default_value) -{ - Dwarf_Attribute attr; - if (dwarf_attr_integrate(die, attribute, &attr) == NULL) - return default_value; - Dwarf_Word value; - return dwarf_formudata(dwarf_attr_integrate(die, attribute, &attr), - &value) == 0 ? (std::uint64_t) value : default_value; -} - -static bool MC_dwarf_attr_flag(Dwarf_Die * die, int attribute, bool integrate) -{ - Dwarf_Attribute attr; - if ((integrate ? dwarf_attr_integrate(die, attribute, &attr) - : dwarf_attr(die, attribute, &attr)) == 0) - return false; - - bool result; - if (dwarf_formflag(&attr, &result)) - xbt_die("Unexpected form for attribute %s", MC_dwarf_attrname(attribute)); - return result; -} - -/** \brief Finds the number of elements in a DW_TAG_subrange_type or DW_TAG_enumeration_type DIE - * - * \param die the DIE - * \param unit DIE of the compilation unit - * \return number of elements in the range - * */ -static std::uint64_t MC_dwarf_subrange_element_count(Dwarf_Die * die, - Dwarf_Die * unit) -{ - xbt_assert(dwarf_tag(die) == DW_TAG_enumeration_type - || dwarf_tag(die) == DW_TAG_subrange_type, - "MC_dwarf_subrange_element_count called with DIE of type %s", - MC_dwarf_die_tagname(die)); - - // Use DW_TAG_count if present: - 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)) - // This is not really 0, but the code expects this (we do not know): - return 0; - - std::uint64_t upper_bound = - MC_dwarf_attr_integrate_uint(die, DW_AT_upper_bound, -1); - - std::uint64_t lower_bound = 0; - if (dwarf_hasattr_integrate(die, DW_AT_lower_bound)) - lower_bound = MC_dwarf_attr_integrate_uint(die, DW_AT_lower_bound, -1); - else - lower_bound = MC_dwarf_default_lower_bound(dwarf_srclang(unit)); - return upper_bound - lower_bound + 1; -} - -/** \brief Finds the number of elements in a array type (DW_TAG_array_type) - * - * The compilation unit might be needed because the default lower - * bound depends on the language of the compilation unit. - * - * \param die the DIE of the DW_TAG_array_type - * \param unit the DIE of the compilation unit - * \return number of elements in this array type - * */ -static -std::uint64_t MC_dwarf_array_element_count(Dwarf_Die * die, Dwarf_Die * unit) -{ - xbt_assert(dwarf_tag(die) == DW_TAG_array_type, - "MC_dwarf_array_element_count called with DIE of type %s", - MC_dwarf_die_tagname(die)); - - int result = 1; - Dwarf_Die child; - int res; - for (res = dwarf_child(die, &child); res == 0; - res = dwarf_siblingof(&child, &child)) { - int child_tag = dwarf_tag(&child); - if (child_tag == DW_TAG_subrange_type - || child_tag == DW_TAG_enumeration_type) - result *= MC_dwarf_subrange_element_count(&child, unit); - } - return result; -} - -// ***** simgrid::mc::Type* - -/** \brief Initialize the location of a member of a type - * (DW_AT_data_member_location of a DW_TAG_member). - * - * \param type a type (struct, class) - * \param member the member of the type - * \param child DIE of the member (DW_TAG_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)) - 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) - return; - xbt_die - ("Missing DW_AT_data_member_location field in DW_TAG_member %s of type <%" - PRIx64 ">%s", member->name.c_str(), - (std::uint64_t) type->id, type->name.c_str()); - } - - Dwarf_Attribute attr; - dwarf_attr_integrate(child, DW_AT_data_member_location, &attr); - int form = dwarf_whatform(&attr); - int klass = MC_dwarf_form_get_class(form); - switch (klass) { - case MC_DW_CLASS_EXPRLOC: - case MC_DW_CLASS_BLOCK: - // Location expression: - { - Dwarf_Op *expr; - size_t 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), - (std::uint64_t) type->id, type->name.c_str()); - MC_dwarf_expression(expr, len); - break; - } - case MC_DW_CLASS_CONSTANT: - // Offset from the base address of the object: - { - Dwarf_Word offset; - if (!dwarf_formudata(&attr, &offset)) - member->offset(offset); - else - xbt_die("Cannot get %s location <%" PRIx64 ">%s", - MC_dwarf_attr_integrate_string(child, DW_AT_name), - (std::uint64_t) type->id, type->name.c_str()); - break; - } - case MC_DW_CLASS_LOCLISTPTR: - // Reference to a location list: - // TODO - case MC_DW_CLASS_REFERENCE: - // It's supposed to be possible in DWARF2 but I couldn't find its semantic - // in the spec. - default: - xbt_die("Can't handle form class (%i) / form 0x%x as DW_AT_member_location", - klass, form); - } - -} - -/** \brief Populate the list of members of a type - * - * \param info ELF object containing the type DIE - * \param die DIE of the type - * \param unit DIE of the compilation unit containing the type DIE - * \param type the 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; - xbt_assert(type->members.empty()); - for (res = dwarf_child(die, &child); res == 0; - res = dwarf_siblingof(&child, &child)) { - int tag = dwarf_tag(&child); - if (tag == DW_TAG_member || tag == DW_TAG_inheritance) { - - // Skip declarations: - if (MC_dwarf_attr_flag(&child, DW_AT_declaration, false)) - continue; - - // 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) - simgrid::mc::Type member; - member.type = tag; - - // Global Offset: - member.id = dwarf_dieoffset(&child); - - const char *name = MC_dwarf_attr_integrate_string(&child, DW_AT_name); - if (name) - member.name = name; - member.byte_size = - MC_dwarf_attr_integrate_uint(&child, DW_AT_byte_size, 0); - member.element_count = -1; - member.type_id = MC_dwarf_at_type(&child); - - 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) - xbt_die("Missing type for member %s of <%" PRIx64 ">%s", - member.name.c_str(), - (std::uint64_t) type->id, type->name.c_str()); - - type->members.push_back(std::move(member)); - } - } -} - -/** \brief Create a MC type object from a DIE - * - * \param info current object info object - * \param DIE (for a given type); - * \param unit compilation unit of the current DIE - * \return MC representation of the type - */ -static simgrid::mc::Type MC_dwarf_die_to_type( - simgrid::mc::ObjectInformation* info, Dwarf_Die * die, - Dwarf_Die * unit, simgrid::mc::Frame* frame, - const char *ns) -{ - simgrid::mc::Type type; - type.type = dwarf_tag(die); - type.name = std::string(); - type.element_count = -1; - - // Global Offset - type.id = dwarf_dieoffset(die); - - const char *prefix = ""; - switch (type.type) { - case DW_TAG_structure_type: - prefix = "struct "; - break; - case DW_TAG_union_type: - prefix = "union "; - break; - case DW_TAG_class_type: - prefix = "class "; - break; - default: - prefix = ""; - } - - const char *name = MC_dwarf_attr_integrate_string(die, DW_AT_name); - if (name != NULL) { - char* full_name = ns ? bprintf("%s%s::%s", prefix, ns, name) : - bprintf("%s%s", prefix, name); - type.name = std::string(full_name); - free(full_name); - } - - type.type_id = MC_dwarf_at_type(die); - - // Some compilers do not emit DW_AT_byte_size for pointer_type, - // so we fill this. We currently assume that the model-checked process is in - // the same architecture.. - if (type.type == DW_TAG_pointer_type) - type.byte_size = sizeof(void*); - - // Computation of the byte_size; - if (dwarf_hasattr_integrate(die, DW_AT_byte_size)) - type.byte_size = MC_dwarf_attr_integrate_uint(die, DW_AT_byte_size, 0); - else if (type.type == DW_TAG_array_type - || type.type == DW_TAG_structure_type - || type.type == DW_TAG_class_type) { - Dwarf_Word size; - if (dwarf_aggregate_size(die, &size) == 0) - type.byte_size = size; - } - - switch (type.type) { - case DW_TAG_array_type: - type.element_count = MC_dwarf_array_element_count(die, unit); - // TODO, handle DW_byte_stride and (not) DW_bit_stride - break; - - case DW_TAG_pointer_type: - case DW_TAG_reference_type: - case DW_TAG_rvalue_reference_type: - type.is_pointer_type = 1; - break; - - case DW_TAG_structure_type: - case DW_TAG_union_type: - case DW_TAG_class_type: - MC_dwarf_add_members(info, die, unit, &type); - char *new_ns = ns == NULL ? xbt_strdup(type.name.c_str()) - : bprintf("%s::%s", ns, name); - MC_dwarf_handle_children(info, die, unit, frame, new_ns); - free(new_ns); - break; - } - - return std::move(type); -} - -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); - auto& t = (info->types[type.id] = std::move(type)); - if (!t.name.empty() && type.byte_size != 0) - info->full_types_by_name[t.name] = &t; -} - -static int mc_anonymous_variable_index = 0; - -static std::unique_ptr MC_die_to_variable( - simgrid::mc::ObjectInformation* info, Dwarf_Die * die, - Dwarf_Die * unit, simgrid::mc::Frame* frame, - const char *ns) -{ - // Skip declarations: - if (MC_dwarf_attr_flag(die, DW_AT_declaration, false)) - return nullptr; - - // Skip compile time constants: - if (dwarf_hasattr(die, DW_AT_const_value)) - return nullptr; - - Dwarf_Attribute attr_location; - 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()); - variable->dwarf_offset = dwarf_dieoffset(die); - variable->global = frame == NULL; // Can be override base on DW_AT_location - variable->object_info = info; - - const char *name = MC_dwarf_attr_integrate_string(die, DW_AT_name); - if (name) - variable->name = name; - variable->type_id = MC_dwarf_at_type(die); - - int form = dwarf_whatform(&attr_location); - int klass = - form == - DW_FORM_sec_offset ? MC_DW_CLASS_CONSTANT : MC_dwarf_form_get_class(form); - switch (klass) { - case MC_DW_CLASS_EXPRLOC: - case MC_DW_CLASS_BLOCK: - // Location expression: - { - Dwarf_Op *expr; - size_t len; - if (dwarf_getlocation(&attr_location, &expr, &len)) { - xbt_die( - "Could not read location expression in DW_AT_location " - "of variable <%" PRIx64 ">%s", - (std::uint64_t) variable->dwarf_offset, - variable->name.c_str()); - } - - if (len == 1 && expr[0].atom == DW_OP_addr) { - variable->global = 1; - uintptr_t offset = (uintptr_t) expr[0].number; - uintptr_t base = (uintptr_t) info->base_address(); - variable->address = (void *) (base + offset); - } else { - simgrid::mc::LocationListEntry entry; - entry.expression = MC_dwarf_expression(expr, len); - variable->location_list = { std::move(entry) }; - } - - break; - } - case MC_DW_CLASS_LOCLISTPTR: - case MC_DW_CLASS_CONSTANT: - // Reference to location list: - mc_dwarf_location_list_init_libdw( - &variable->location_list, info, die, - &attr_location); - break; - default: - xbt_die("Unexpected form 0x%x (%i), class 0x%x (%i) list for location " - "in <%" PRIx64 ">%s", - form, form, klass, klass, - (std::uint64_t) variable->dwarf_offset, - variable->name.c_str()); - } - - // 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; - } - case MC_DW_CLASS_RANGELISTPTR: // TODO - default: - xbt_die - ("Unhandled form 0x%x, class 0x%X for DW_AT_start_scope of variable %s", - form, klass, name == NULL ? "?" : name); - } - } - - if (ns && variable->global) - variable->name = - std::string(ns) + "::" + variable->name; - - // The current code needs a variable name, - // generate a fake one: - if (variable->name.empty()) - variable->name = - "@anonymous#" + std::to_string(mc_anonymous_variable_index++); - - return std::move(variable); -} - -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 = - MC_die_to_variable(info, die, unit, frame, ns); - if (!variable) - return; - // Those arrays are sorted later: - else if (variable->global) - info->global_variables.push_back(std::move(*variable)); - else if (frame != nullptr) - frame->variables.push_back(std::move(*variable)); - else - xbt_die("No frame for this local variable"); -} - -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 - int tag = dwarf_tag(die); - mc_tag_class klass = MC_dwarf_tag_classify(tag); - - // (Template) Subprogram declaration: - if (klass == mc_tag_subprogram - && MC_dwarf_attr_flag(die, DW_AT_declaration, false)) - return; - - if (klass == mc_tag_scope) - xbt_assert(parent_frame, "No parent scope for this scope"); - - simgrid::mc::Frame frame; - - frame.tag = tag; - frame.id = dwarf_dieoffset(die); - frame.object_info = info; - - if (klass == mc_tag_subprogram) { - const char *name = MC_dwarf_attr_integrate_string(die, DW_AT_name); - if(ns) - frame.name = std::string(ns) + "::" + name; - else if (name) - frame.name = name; - else - frame.name.clear(); - } - - frame.abstract_origin_id = - MC_dwarf_attr_dieoffset(die, DW_AT_abstract_origin); - - // This is the base address for DWARF addresses. - // Relocated addresses are offset from this base address. - // See DWARF4 spec 7.5 - void *base = info->base_address(); - - // TODO, support DW_AT_ranges - std::uint64_t low_pc = MC_dwarf_attr_integrate_addr(die, DW_AT_low_pc); - frame.low_pc = low_pc ? ((char *) base) + low_pc : 0; - if (low_pc) { - // DW_AT_high_pc: - Dwarf_Attribute attr; - if (!dwarf_attr_integrate(die, DW_AT_high_pc, &attr)) { - xbt_die("Missing DW_AT_high_pc matching with DW_AT_low_pc"); - } - - Dwarf_Sword offset; - Dwarf_Addr high_pc; - - switch (MC_dwarf_form_get_class(dwarf_whatform(&attr))) { - - // DW_AT_high_pc if an offset from the low_pc: - case MC_DW_CLASS_CONSTANT: - - if (dwarf_formsdata(&attr, &offset) != 0) - xbt_die("Could not read constant"); - frame.high_pc = (void *) ((char *) frame.low_pc + offset); - break; - - // DW_AT_high_pc is a relocatable address: - case MC_DW_CLASS_ADDRESS: - if (dwarf_formaddr(&attr, &high_pc) != 0) - xbt_die("Could not read address"); - frame.high_pc = ((char *) base) + high_pc; - break; - - default: - xbt_die("Unexpected class for DW_AT_high_pc"); - - } - } - - if (klass == mc_tag_subprogram) { - Dwarf_Attribute attr_frame_base; - if (dwarf_attr_integrate(die, DW_AT_frame_base, &attr_frame_base)) - mc_dwarf_location_list_init_libdw(&frame.frame_base, info, die, - &attr_frame_base); - } - - // Handle children: - MC_dwarf_handle_children(info, die, unit, &frame, ns); - - // Someone needs this to be sorted but who? - std::sort(frame.variables.begin(), frame.variables.end(), - MC_compare_variable); - - // Register it: - if (klass == mc_tag_subprogram) - info->subprograms[frame.id] = frame; - else if (klass == mc_tag_scope) - parent_frame->scopes.push_back(std::move(frame)); -} - -static void mc_dwarf_handle_namespace_die(simgrid::mc::ObjectInformation* info, - Dwarf_Die * die, Dwarf_Die * unit, - simgrid::mc::Frame* frame, - const char *ns) -{ - const char *name = MC_dwarf_attr_integrate_string(die, DW_AT_name); - if (frame) - xbt_die("Unexpected namespace in a subprogram"); - char *new_ns = ns == NULL ? xbt_strdup(name) - : bprintf("%s::%s", ns, name); - MC_dwarf_handle_children(info, die, unit, frame, new_ns); - xbt_free(new_ns); -} - -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: - 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, ns); - } -} - -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); - mc_tag_class klass = MC_dwarf_tag_classify(tag); - switch (klass) { - - // Type: - case mc_tag_type: - MC_dwarf_handle_type_die(info, die, unit, frame, ns); - break; - - // Subprogram or scope: - case mc_tag_subprogram: - case mc_tag_scope: - MC_dwarf_handle_scope_die(info, die, unit, frame, ns); - return; - - // Variable: - case mc_tag_variable: - MC_dwarf_handle_variable_die(info, die, unit, frame, ns); - break; - - case mc_tag_namespace: - mc_dwarf_handle_namespace_die(info, die, unit, frame, ns); - break; - - default: - break; - - } -} - -/** \brief Populate the debugging informations of the given ELF object - * - * Read the DWARf information of the EFFL object and populate the - * lists of types, variables, functions. - */ -void MC_dwarf_get_variables(simgrid::mc::ObjectInformation* info) -{ - int fd = open(info->file_name.c_str(), O_RDONLY); - if (fd < 0) - xbt_die("Could not open file %s", info->file_name.c_str()); - Dwarf *dwarf = dwarf_begin(fd, DWARF_C_READ); - if (dwarf == NULL) - xbt_die("Missing debugging information in %s\n" - "Your program and its dependencies must have debugging information.\n" - "You might want to recompile with -g or install the suitable debugging package.\n", - info->file_name.c_str()); - // For each compilation unit: - 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) - MC_dwarf_handle_children(info, &unit_die, &unit_die, NULL, NULL); - offset = next_offset; - } - - dwarf_end(dwarf); - close(fd); -} diff --git a/tools/cmake/DefinePackages.cmake b/tools/cmake/DefinePackages.cmake index 00b1619a4d..6daa09f8e7 100644 --- a/tools/cmake/DefinePackages.cmake +++ b/tools/cmake/DefinePackages.cmake @@ -643,7 +643,6 @@ set(MC_SRC src/mc/mcer_ignore.cpp src/mc/mcer_ignore.h src/mc/mc_ignore.h - src/mc/mc_libdw.cpp src/mc/mc_liveness.h src/mc/mc_location.h src/mc/mc_liveness.cpp -- 2.20.1