static string typename_for_vaddr_interval(iterator_df<subprogram_die> i_subp,
const boost::icl::discrete_interval<Dwarf_Off> interval)
{
std::ostringstream s_typename;
if (i_subp.name_here()) s_typename << *i_subp.name_here();
else s_typename << "0x" << std::hex << i_subp.offset_here() << std::dec;
s_typename << "_vaddrs_0x" << std::hex << interval.lower() << "_0x"
<< interval.upper() << std::dec;
return s_typename.str();
}
void add_alias_if_absent(const string& s, iterator_df<type_die> concrete_t, master_relation_t& r)
{
// HACK: don't alias void (we can't use iterators-to-void-type as indexes)
if (!concrete_t) return;
/* HACK: since in C, "struct X" and "X" are distinct, but we don't distinguish them,
* we also need to ignore this kind of alias here. Be careful about base types though:
* we *do* need their actual-name aliases. */
if (!concrete_t.is_a<base_type_die>()
&& concrete_t.name_here() && s == *name_for_type_die(concrete_t)) return;
r.aliases[concrete_t].insert(s);
}
pair<bool, uniqued_name> add_type_if_absent(iterator_df<type_die> t, master_relation_t& r)
{
if (t && t != t->get_concrete_type())
{
// add the concrete
auto concrete_t = t->get_concrete_type();
auto ret = add_concrete_type_if_absent(concrete_t, r);
// add the alias, if we have a name
if (t.name_here())
{
add_alias_if_absent(*name_for_type_die(t), concrete_t, r);
}
return ret;
}
else if (t.is_a<base_type_die>())
{
/* Base types are a bit like non-concretes. */
// add the concrete
auto concrete_t = t->get_concrete_type();
auto ret = add_concrete_type_if_absent(concrete_t, r);
// add the alias, if we have a name
if (t.name_here())
{
add_alias_if_absent(*name_for_type_die(t), concrete_t, r);
/* HACK: for good measure, also ensure that we add the
* canonical C name, if the name we have is in some equivalence class. */
const char **c_equiv_class = abstract_c_compiler::get_equivalence_class_ptr(
name_for_type_die(t)->c_str());
if (c_equiv_class)
{
add_alias_if_absent(c_equiv_class[0], concrete_t, r);
}
}
return ret;
}
else return add_concrete_type_if_absent(t, r);
}
static inline void _debug_print_dedup(iterator_df<dwarf::core::type_die> type_die, iterator_df<dwarf::core::type_die> dedup_type_iter) {
cerr << "Searching type set for";
if (type_die.name_here()) {
cerr << " '" << *type_die.name_here() << "'";
}
if (type_die.offset_here()) {
cerr << " @" << to_hex(type_die.offset_here());
}
if (!type_die.name_here() && !type_die.offset_here()) {
cerr << " <some anonymous DIE>";
}
cerr << ", got";
if (dedup_type_iter.name_here()) {
cerr << " '" << *dedup_type_iter.name_here() << "'";
}
if (dedup_type_iter.offset_here()) {
cerr << " @" << to_hex(dedup_type_iter.offset_here());
}
if (!dedup_type_iter.name_here() && !dedup_type_iter.offset_here()) {
cerr << " <some anonymous DIE>";
}
cerr << "." << endl;
}
void print_type_die(std::ostream &_s, iterator_df<dwarf::core::basic_die> die_iter, optional<type_set&> types) {
if (!die_iter) return;
// Special case root early: just print all children
if (die_iter.tag_here() == 0) {
auto children = die_iter.children_here();
for (auto iter = children.first; iter != children.second; iter++) {
print_type_die(_s, iter.base(), types);
_s << endl;
}
return;
}
srk31::indenting_newline_ostream s(_s);
// auto &die = *die_iter;
auto name_ptr = die_iter.name_here();
auto tag = string(DEFAULT_DWARF_SPEC.tag_lookup(die_iter.tag_here()));
if (tag.compare("(unknown tag)") == 0) {
// Leave unknown tags as hex
tag = to_hex(die_iter.tag_here());
} else {
tag = tag.substr(7, string::npos); // remove DW_TAG_
}
auto offset = die_iter.offset_here();
/* Offset, tag, name, type */
bool offset_printed = false;
bool name_printed = false;
bool type_printed = false;
if (offset) {
s << "@0x" << std::hex << offset << std::dec << " ";
offset_printed = true;
}
s << tag;
if (name_ptr) {
s << " " << *name_ptr;
name_printed = true;
}
auto attrs = die_iter.copy_attrs(die_iter.get_root());
auto &root = die_iter.get_root();
/* Convert the type offset into a name if possible. */
/* Two types (ha) of die with type information:
with_type_describing_layout_die => variables, members, etc, things *with* a type
type_describing_subprogram_die => subprograms (functions etc) *returning* a thing with a type
type_chain_die => things which are types with a type, e.g. typedefs, pointers, arrays
(yes, you're right, I can't count)
*/
dwarf::core::iterator_df<dwarf::core::type_die> type_die;
auto with_type_iter = die_iter.as_a<with_type_describing_layout_die>();
auto returning_type_iter = die_iter.as_a<type_describing_subprogram_die>();
auto type_chain_iter = die_iter.as_a<type_chain_die>();
if (with_type_iter) type_die = with_type_iter->get_type();
else if (returning_type_iter) type_die = returning_type_iter->get_type();
else if (type_chain_iter) type_die = type_chain_iter->get_type();
if (type_die) {
// Dedup
if (types) {
auto dedup_type_iter = types->find(type_die);
//assert(dedup_type_iter != types->end());
if (dedup_type_iter != types->end()) {
_debug_print_dedup(type_die, *dedup_type_iter);
type_die = *dedup_type_iter;
}
}
auto abstract_name = type_die.name_here();
// Concretify (traverse typedefs etc)
auto concrete_die = type_die->get_concrete_type(root);
// Also dedup that. Just in case.
if (concrete_die && types) {
auto concrete_die_iter = types->find(concrete_die);
//assert(concrete_die_iter != types->end());
if (concrete_die_iter != types->end()) {
_debug_print_dedup(concrete_die, *concrete_die_iter);
concrete_die = *concrete_die_iter;
}
}
auto concrete_name = concrete_die.name_here();
auto type_name = (concrete_name ? concrete_name : abstract_name);
if (type_name) {
_debug_print_print(name_ptr, offset, type_die, concrete_die);
s << " : " << *type_name;
} else {
auto type_offset = (concrete_die ? concrete_die.offset_here() : type_die.offset_here());
s << " : @" << to_hex(type_offset);
if (types->find(type_die) == types->end() && types->find(concrete_die) == types->end()) {
cerr << endl << "WARNING: a type was called for that wasn't in types!" << endl << "abstract: ";
type_die.print_with_attrs(cerr, 0);
cerr << endl << "concrete: ";
concrete_die.print_with_attrs(cerr, 0);
cerr << endl << "context: ";
die_iter.print_with_attrs(cerr, 0);
cerr << endl << endl;
}
type_printed = true;
}
} else {
try {
auto &v = attrs.at(DW_AT_type);
auto ref = v.get_ref();
s << " : " << (ref.abs ? "@" : "+") << to_hex(ref.off);
type_printed = true;
} catch (std::out_of_range) {}
}
/* Attribute list */
if (name_printed) attrs.erase(DW_AT_name);
if (type_printed) attrs.erase(DW_AT_type);
if (attrs.size() > 0) {
s << " [";
s.inc_level();
unsigned int attrs_printed = 0;
for (auto iter = attrs.begin(); iter != attrs.end(); iter++) {
auto pair = *iter;
auto k = string(DEFAULT_DWARF_SPEC.attr_lookup(pair.first));
if (k.compare("(unknown attribute)") == 0) {
// FIXME FIXME FIXME
continue;
/* Leave unknown attributes as hex */
k = to_hex(pair.first);
} else {
k = k.substr(6, string::npos); // remove DW_AT_
}
const char *drop_attrs[] = {
"decl_file",
"decl_line",
"prototyped",
"external",
"sibling",
nullptr
};
for (unsigned int i = 0; drop_attrs[i] != nullptr; i++) {
if (k.compare(drop_attrs[i]) == 0) {
continue;
}
}
auto v = pair.second;
if (attrs_printed++ != 0) {
s << "," << endl;
}
s << k << " = ";
switch (v.get_form()) {
case attribute_value::STRING: {
string content = v.get_string();
replace_all(content, "\\", "\\\\");
replace_all(content, "\n", "\\n");
replace_all(content, "\"", "\\\"");
s << "\"" << content << "\"";
}
break;
case attribute_value::FLAG: {
if (v.get_flag()) {
s << "true";
} else {
s << "false";
}
}
break;
case attribute_value::UNSIGNED:
s << to_dec(v.get_unsigned()) << "u";
break;
case attribute_value::SIGNED:
s << to_dec(v.get_signed());
break;
case attribute_value::ADDR:
s << to_hex(v.get_address());
break;
case attribute_value::REF: {
auto ref = v.get_ref();
if (ref.abs) {
s << "@";
} else {
s << "+";
}
s << to_hex(ref.off);
}
break;
case attribute_value::LOCLIST: {
auto loclist = v.get_loclist();
if (loclist.size() == 1 && loclist[0].lopc == 0 && (loclist[0].hipc == 0 || loclist[0].hipc == std::numeric_limits<Dwarf_Addr>::max())) {
s << "{";
s.inc_level();
auto locexpr = loclist[0];
for (auto iter = locexpr.begin(); iter != locexpr.end(); iter++) {
if (iter != locexpr.begin()) {
s << endl;
}
s << opcode_to_string(*iter) << ";";
}
s.dec_level();
s << "}";
} else {
s << "/* FIXME dummy location for multiple vaddr loclist */ { addr(0); }";
}
}
break;
default:
s << "/* FIXME */ \"" << v << "\"";
break;
}
}
s.dec_level();
s << "]";
}
/* Children list (recursively) */
// auto lambda = [] (iterator_base &iter) {
// return (iter.is_a<compile_unit_die>() || iter.is_a<member_die>() || iter.is_a<formal_parameter_die>() || iter.is_a<subprogram_die>() || iter.is_a<root_die>());
// };
auto children = die_iter.children_here(); //.subseq_with<decltype(lambda)>(lambda);
if (children.first != children.second) {
s << " {";
s.inc_level();
for (auto iter = children.first; iter != children.second; iter++) {
// user tags
if (iter.tag_here() > 0x4000) continue;
switch (iter.tag_here()) {
// Only print these tags
case DW_TAG_compile_unit:
case DW_TAG_member:
case DW_TAG_formal_parameter:
case DW_TAG_subprogram:
case 0: // root
print_type_die(s, iter.base(), types);
s << endl;
break;
case DW_TAG_inlined_subroutine:
case DW_TAG_lexical_block:
case DW_TAG_variable:
// Specifically skip some.
continue; // definitely
break; // not confusing
default:
print_type_die(s, iter.base(), types);
s << endl;
break;
}
}
s.dec_level();
s << "}";
}
s << ";";
}