1 /* Copyright (c) 2007-2014. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
8 * Debug information for the MC.
11 #ifndef SIMGRID_MC_OBJECT_INFO_H
12 #define SIMGRID_MC_OBJECT_INFO_H
18 #include <simgrid_config.h>
20 #include <xbt/dynar.h>
22 #include "mc_forward.h"
23 #include "mc_location.h"
24 #include "mc_process.h"
25 #include "../smpi/private.h"
29 typedef int e_mc_type_type;
38 Type(Type const& type) = delete;
39 Type& operator=(Type const&) = delete;
42 Dwarf_Off id; /* Offset in the section (in hexadecimal form) */
43 std::string name; /* Name of the type */
44 int byte_size; /* Size in bytes */
45 int element_count; /* Number of elements for array type */
46 std::string dw_type_id; /* DW_AT_type id */
47 xbt_dynar_t members; /* if DW_TAG_structure_type, DW_TAG_class_type, DW_TAG_union_type*/
50 // Location (for members) is either of:
51 struct s_mc_expression location;
54 mc_type_t subtype; // DW_AT_type
55 mc_type_t full_type; // The same (but more complete) type
63 /** Bit field of options */
64 typedef int mc_object_info_flags;
65 #define MC_OBJECT_INFO_NONE 0
66 #define MC_OBJECT_INFO_EXECUTABLE 1
71 class ObjectInformation {
75 ObjectInformation(ObjectInformation const&) = delete;
76 ObjectInformation& operator=(ObjectInformation const&) = delete;
78 mc_object_info_flags flags;
83 char *end_exec; // Executable segment
85 char *end_rw; // Read-write segment
87 char *end_ro; // read-only segment
88 xbt_dict_t subprograms; // xbt_dict_t<origin as hexadecimal string, dw_frame_t>
89 xbt_dynar_t global_variables; // xbt_dynar_t<dw_variable_t>
90 xbt_dict_t types; // xbt_dict_t<origin as hexadecimal string, mc_type_t>
91 xbt_dict_t full_types_by_name; // xbt_dict_t<name, mc_type_t> (full defined type only)
93 // Here we sort the minimal information for an efficient (and cache-efficient)
94 // lookup of a function given an instruction pointer.
95 // The entries are sorted by low_pc and a binary search can be used to look them up.
96 xbt_dynar_t functions_index;
98 bool executable() const
100 return this->flags & MC_OBJECT_INFO_EXECUTABLE;
103 bool privatized() const
105 return this->executable() && smpi_privatize_global_variables;
108 void* base_address() const;
110 dw_frame_t find_function(const void *ip) const;
111 dw_variable_t find_variable(const char* name) const;
118 XBT_INTERNAL std::shared_ptr<s_mc_object_info_t> MC_find_object_info(
119 std::vector<simgrid::mc::VmMap> const& maps, const char* name, int executable);
120 XBT_INTERNAL void MC_post_process_object_info(mc_process_t process, mc_object_info_t info);
122 XBT_INTERNAL void MC_dwarf_get_variables(mc_object_info_t info);
123 XBT_INTERNAL void MC_dwarf_get_variables_libdw(mc_object_info_t info);
124 XBT_INTERNAL const char* MC_dwarf_attrname(int attr);
125 XBT_INTERNAL const char* MC_dwarf_tagname(int tag);
127 XBT_INTERNAL void* mc_member_resolve(const void* base, mc_type_t type, mc_type_t member, mc_address_space_t snapshot, int process_index);
129 struct s_dw_variable{
130 Dwarf_Off dwarf_offset; /* Global offset of the field. */
137 s_mc_location_list_t locations;
141 mc_object_info_t object_info;
150 s_mc_location_list_t frame_base;
151 xbt_dynar_t /* <dw_variable_t> */ variables; /* Cannot use dict, there may be several variables with the same name (in different lexical blocks)*/
152 unsigned long int id; /* DWARF offset of the subprogram */
153 xbt_dynar_t /* <dw_frame_t> */ scopes;
154 Dwarf_Off abstract_origin_id;
155 mc_object_info_t object_info;
158 struct s_mc_function_index_item {
159 void* low_pc, *high_pc;
163 XBT_INTERNAL void mc_frame_free(dw_frame_t freme);