1 /* Copyright (c) 2014-2021. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
12 #include "mc/datatypes.h"
13 #include "src/mc/mc_private.hpp"
15 #include "src/mc/inspect/ObjectInformation.hpp"
16 #include "src/mc/inspect/Type.hpp"
17 #include "src/mc/inspect/Variable.hpp"
18 #include "src/mc/remote/RemoteProcess.hpp"
23 // Test broken with multi-dimensional arrays. See https://sourceware.org/bugzilla/show_bug.cgi?id=22546
24 // int test_some_array[4][5][6];
25 int test_some_array[4 * 5 * 6];
30 some_struct test_some_struct;
32 static simgrid::mc::Frame* find_function_by_name(
33 simgrid::mc::ObjectInformation* info, const char* name)
35 for (auto& entry : info->subprograms)
36 if(entry.second.name == name)
41 static simgrid::mc::Variable* find_local_variable(
42 simgrid::mc::Frame* frame, const char* argument_name)
44 for (simgrid::mc::Variable& variable : frame->variables)
45 if(argument_name == variable.name)
48 for (simgrid::mc::Frame& scope : frame->scopes) {
49 simgrid::mc::Variable* variable = find_local_variable(
50 &scope, argument_name);
58 static void test_local_variable(simgrid::mc::ObjectInformation* info, const char* function, const char* variable,
59 const void* address, unw_cursor_t* cursor)
61 simgrid::mc::Frame* subprogram = find_function_by_name(info, function);
63 // TODO, Lookup frame by IP and test against name instead
65 const simgrid::mc::Variable* var = find_local_variable(subprogram, variable);
68 void* frame_base = subprogram->frame_base(*cursor);
69 simgrid::dwarf::Location location = simgrid::dwarf::resolve(var->location_list, info, cursor, frame_base, nullptr);
71 xbt_assert(location.in_memory(), "Expected the variable %s of function %s to be in memory", variable, function);
72 xbt_assert(location.address() == address, "Bad resolution of local variable %s of %s", variable, function);
75 static const simgrid::mc::Variable* test_global_variable(const simgrid::mc::RemoteProcess& process,
76 simgrid::mc::ObjectInformation* info, const char* name,
77 void* address, long byte_size)
79 const simgrid::mc::Variable* variable = info->find_variable(name);
80 xbt_assert(variable, "Global variable %s was not found", name);
81 xbt_assert(variable->name == name, "Name mismatch for %s", name);
82 xbt_assert(variable->global, "Variable %s is not global", name);
83 xbt_assert(variable->address == address, "Address mismatch for %s : %p expected but %p found", name, address,
86 auto i = process.binary_info->types.find(variable->type_id);
87 xbt_assert(i != process.binary_info->types.end(), "Missing type for %s", name);
88 const simgrid::mc::Type* type = &i->second;
89 xbt_assert(type->byte_size == byte_size, "Byte size mismatch for %s", name);
93 static simgrid::mc::Member* find_member(simgrid::mc::Type& type, const char* name)
95 for (simgrid::mc::Member& member : type.members)
96 if(member.name == name)
101 int some_local_variable = 0;
107 static void test_type_by_name(const simgrid::mc::RemoteProcess& process, s_foo /*my_foo*/)
109 assert(process.binary_info->full_types_by_name.find("struct s_foo") != process.binary_info->full_types_by_name.end());
112 int main(int argc, char** argv)
114 SIMIX_global_init(&argc, argv);
116 const simgrid::mc::Variable* var;
117 simgrid::mc::Type* type;
119 simgrid::mc::RemoteProcess process(getpid());
120 process.init(nullptr, nullptr, nullptr, nullptr);
122 test_global_variable(process, process.binary_info.get(), "some_local_variable", &some_local_variable, sizeof(int));
124 var = test_global_variable(process, process.binary_info.get(), "test_some_array", &test_some_array,
125 sizeof(test_some_array));
126 auto i = process.binary_info->types.find(var->type_id);
127 xbt_assert(i != process.binary_info->types.end(), "Missing type");
129 xbt_assert(type->element_count == 6 * 5 * 4, "element_count mismatch in test_some_array : %i / %i",
130 type->element_count, 6 * 5 * 4);
132 var = test_global_variable(process, process.binary_info.get(), "test_some_struct", &test_some_struct,
133 sizeof(test_some_struct));
134 i = process.binary_info->types.find(var->type_id);
135 xbt_assert(i != process.binary_info->types.end(), "Missing type");
139 assert(find_member(*type, "first")->offset() == 0);
140 assert(find_member(*type, "second")->offset() ==
141 ((const char*)&test_some_struct.second) - (const char*)&test_some_struct);
143 unw_context_t context;
145 unw_getcontext(&context);
146 unw_init_local(&cursor, &context);
148 test_local_variable(process.binary_info.get(), "main", "argc", &argc, &cursor);
150 int lexical_block_variable = 50;
151 test_local_variable(process.binary_info.get(), "main", "lexical_block_variable", &lexical_block_variable, &cursor);
154 test_type_by_name(process, my_foo);