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More work to get inline resolution going

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This commit is contained in:
Jeremy 2023-11-08 19:46:31 -05:00
parent 1ced7c8dc3
commit 2f8e1a5ff7
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GPG Key ID: BE03111EB7ED6E2E
1 changed files with 43 additions and 14 deletions
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57
src/symbols/symbols_with_libdwarf.cpp
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@ -302,6 +302,7 @@ namespace libdwarf {
}
void get_inlines_info(
const die_object& cu_die,
const die_object& die,
Dwarf_Addr pc,
Dwarf_Half dwversion,
@ -312,13 +313,22 @@ namespace libdwarf {
if(child) {
if(pc) walk_die_list(
child,
[this, pc, dwversion, &inlines] (const die_object& die) {
[this, &cu_die, pc, dwversion, &inlines] (const die_object& die) {
if(die.get_tag() == DW_TAG_inlined_subroutine && die.pc_in_die(dwversion, pc)) {
const auto name = subprogram_symbol(die, pc, dwversion);
const auto file = ""; // die.get_string_attribute(DW_AT_call_file);
const auto file_i = die.get_unsigned_attribute(DW_AT_call_file);
std::string file;
if(file_i) {
char** dw_srcfiles;
Dwarf_Signed dw_filecount;
VERIFY(wrap(dwarf_srcfiles, cu_die.get(), &dw_srcfiles, &dw_filecount) == DW_DLV_OK);
if(file_i.unwrap() < dw_filecount) {
file = dw_srcfiles[file_i.unwrap() - 1];
}
dwarf_dealloc(die.dbg, dw_srcfiles, DW_DLA_LIST);
}
const auto line = die.get_unsigned_attribute(DW_AT_call_line);
const auto col = die.get_unsigned_attribute(DW_AT_call_column);
// printf(" %s %s:%u:%u\n", name.c_str(), file, (unsigned)line.value_or(0), (unsigned)col.value_or(0));
inlines.push_back(stacktrace_frame{
0,
(unsigned int)line.value_or(0),
@ -327,7 +337,7 @@ namespace libdwarf {
name,
true
});
get_inlines_info(die, pc, dwversion, inlines);
get_inlines_info(cu_die, die, pc, dwversion, inlines);
}
return true;
}
@ -336,22 +346,22 @@ namespace libdwarf {
}
std::string retrieve_symbol_for_subprogram(
const die_object& cu_die,
const die_object& die,
Dwarf_Addr pc,
Dwarf_Half dwversion,
std::vector<stacktrace_frame>& inlines
) {
ASSERT(die.get_tag() == DW_TAG_subprogram);
// if(pc) printf("============================\n");
const auto name = subprogram_symbol(die, pc, dwversion);
// if(pc) printf("%s\n", name.c_str());
get_inlines_info(die, pc, dwversion, inlines);
get_inlines_info(cu_die, die, pc, dwversion, inlines);
return name;
}
// returns true if this call found the symbol
CPPTRACE_FORCE_NO_INLINE_FOR_PROFILING
bool retrieve_symbol_walk(
const die_object& cu_die,
const die_object& die,
Dwarf_Addr pc,
Dwarf_Half dwversion,
@ -361,7 +371,7 @@ namespace libdwarf {
bool found = false;
walk_die_list(
die,
[this, pc, dwversion, &frame, &inlines, &found] (const die_object& die) {
[this, &cu_die, pc, dwversion, &frame, &inlines, &found] (const die_object& die) {
if(dump_dwarf) {
std::fprintf(
stderr,
@ -386,13 +396,13 @@ namespace libdwarf {
);
}
if(die.get_tag() == DW_TAG_subprogram) {
frame.symbol = retrieve_symbol_for_subprogram(die, pc, dwversion, inlines);
frame.symbol = retrieve_symbol_for_subprogram(cu_die, die, pc, dwversion, inlines);
found = true;
return false;
}
auto child = die.get_child();
if(child) {
if(retrieve_symbol_walk(child, pc, dwversion, frame, inlines)) {
if(retrieve_symbol_walk(cu_die, child, pc, dwversion, frame, inlines)) {
found = true;
return false;
}
@ -463,7 +473,7 @@ namespace libdwarf {
std::vector<stacktrace_frame>& inlines
) {
if(get_cache_mode() == cache_mode::prioritize_memory) {
retrieve_symbol_walk(cu_die, pc, dwversion, frame, inlines);
retrieve_symbol_walk(cu_die, cu_die, pc, dwversion, frame, inlines);
} else {
auto off = cu_die.get_global_offset();
auto it = subprograms_cache.find(off);
@ -495,7 +505,7 @@ namespace libdwarf {
if(vec_it != vec.end()) {
//vec_it->die.print();
if(vec_it->die.pc_in_die(dwversion, pc)) {
frame.symbol = retrieve_symbol_for_subprogram(vec_it->die, pc, dwversion, inlines);
frame.symbol = retrieve_symbol_for_subprogram(cu_die, vec_it->die, pc, dwversion, inlines);
}
} else {
ASSERT(vec.size() == 0, "Vec should be empty?");
@ -815,7 +825,6 @@ namespace libdwarf {
frame,
inlines
);
std::reverse(inlines.begin(), inlines.end());
return {std::move(frame), std::move(inlines)};
}
};
@ -868,8 +877,28 @@ namespace libdwarf {
std::vector<stacktrace_frame> final_trace;
for(const auto& entry : trace) {
// most recent call first
final_trace.insert(final_trace.end(), entry.inlines.begin(), entry.inlines.end());
if(!entry.inlines.empty()) {
// insert in reverse order
final_trace.insert(final_trace.end(), entry.inlines.rbegin(), entry.inlines.rend());
}
final_trace.push_back(entry.frame);
if(!entry.inlines.empty()) {
// rotate line info due to quirk of how dwarf stores this stuff
// inclusive range
auto begin = final_trace.end() - (1 + entry.inlines.size());
auto end = final_trace.end() - 1;
std::uint_least32_t carry_line = end->line;
std::uint_least32_t carry_column = end->column;
std::string carry_filename = std::move(end->filename);
for(auto it = end; it != begin; it--) {
it->line = (it - 1)->line;
it->column = (it - 1)->column;
it->filename = std::move((it - 1)->filename);
}
begin->line = carry_line;
begin->column = carry_column;
begin->filename = std::move(carry_filename);
}
}
return final_trace;
}