+++ /dev/null
-/* Copyright (c) 2007-2019. 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. */
-
-#ifndef SIMGRID_MC_OBJECT_INFORMATION_HPP
-#define SIMGRID_MC_OBJECT_INFORMATION_HPP
-
-#include <string>
-#include <unordered_map>
-#include <memory>
-#include <vector>
-
-#include "src/mc/Frame.hpp"
-#include "src/mc/Type.hpp"
-#include "src/mc/mc_forward.hpp"
-#include "src/xbt/memory_map.hpp"
-
-#include "src/smpi/include/private.hpp"
-
-namespace simgrid {
-namespace mc {
-
-/** An entry in the functions index
- *
- * See the code of ObjectInformation::find_function.
- */
-struct FunctionIndexEntry {
- void* low_pc;
- simgrid::mc::Frame* function;
-};
-
-/** Information about an ELF module (executable or shared object)
- *
- * This contains all the information we need about an executable or
- * shared-object in the model-checked process:
- *
- * - where it is located in the virtual address space;
- *
- * - where are located its different memory mappings in the the
- * virtual address space;
- *
- * - all the debugging (DWARF) information
- * - types,
- * - location of the functions and their local variables,
- * - global variables,
- *
- * - etc.
- */
-class ObjectInformation {
-public:
- ObjectInformation() = default;
-
- // Not copyable:
- ObjectInformation(ObjectInformation const&) = delete;
- ObjectInformation& operator=(ObjectInformation const&) = delete;
-
- // Flag:
- static const int Executable = 1;
-
- /** Bitfield of flags */
- int flags = 0;
- std::string file_name;
- const void* start = nullptr;
- const void *end = nullptr;
- // Location of its text segment:
- char *start_exec = nullptr;
- char *end_exec = nullptr;
- // Location of the read-only part of its data segment:
- char *start_rw = nullptr;
- char *end_rw = nullptr;
- // Location of the read/write part of its data segment:
- char *start_ro = nullptr;
- char *end_ro = nullptr;
-
- /** All of its subprograms indexed by their address */
- std::unordered_map<std::uint64_t, simgrid::mc::Frame> subprograms;
-
- /** Index of functions by instruction address
- *
- * We need to efficiently find the function from any given instruction
- * address inside its range. This index is sorted by low_pc
- *
- * The entries are sorted by low_pc and a binary search can be used to look
- * them up. In order to have a better cache locality, we only keep the
- * information we need for the lookup in this vector. We could probably
- * replace subprograms by an ordered vector of Frame and replace this one b
- * a parallel `std::vector<void*>`.
- */
- std::vector<FunctionIndexEntry> functions_index;
-
- std::vector<simgrid::mc::Variable> global_variables;
-
- /** Types indexed by DWARF ID */
- std::unordered_map<std::uint64_t, simgrid::mc::Type> types;
-
- /** Types indexed by name
- *
- * Different compilation units have their separate type definitions
- * (for the same type). When we find an opaque type in one compilation unit,
- * we use this in order to try to find its definition in another compilation
- * unit.
- */
- std::unordered_map<std::string, simgrid::mc::Type*> full_types_by_name;
-
- /** Whether this module is an executable
- *
- * More precisely we check if this is an ET_EXE ELF. These ELF files
- * use fixed addresses instead of base-addres relative addresses.
- * Position independant executables are in fact ET_DYN.
- */
- bool executable() const
- {
- return this->flags & simgrid::mc::ObjectInformation::Executable;
- }
-
- /** Base address of the module
- *
- * All the location information in ELF and DWARF are expressed as an offsets
- * from this base address:
- *
- * - location of the functions and globale variables;
- *
- * - the DWARF instruction `OP_addr` pushes this on the DWARF stack.
- **/
- void* base_address() const;
-
- /** Find a function by instruction address
- *
- * @param ip instruction address
- * @return corresponding function (if any) or nullptr
- */
- simgrid::mc::Frame* find_function(const void *ip) const;
-
- /** Find a global variable by name
- *
- * This is used to ignore global variables and to find well-known variables
- * (`__mmalloc_default_mdp`).
- *
- * @param name scopes name of the global variable (`myproject::Foo::count`)
- * @return corresponding variable (if any) or nullptr
- */
- const simgrid::mc::Variable* find_variable(const char* name) const;
-
- /** Remove a global variable (in order to ignore it)
- *
- * This is used to ignore a global variable for the snapshot comparison.
- */
- void remove_global_variable(const char* name);
-
- /** Remove a loval variables (in order to ignore it)
- *
- * @param name Name of the globale variable
- * @param scope Namespaceed name of the function (or null for all functions)
- */
- void remove_local_variable(
- const char* name, const char* scope);
-};
-
-XBT_PRIVATE std::shared_ptr<ObjectInformation> createObjectInformation(
- std::vector<simgrid::xbt::VmMap> const& maps, const char* name);
-
-/** Augment the current module with informations about the other ones */
-XBT_PRIVATE void postProcessObjectInformation(simgrid::mc::RemoteClient* process, simgrid::mc::ObjectInformation* info);
-}
-}
-
-#endif
