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Merge pull request #96 from behnampn/fix_dwarf

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Efficient processing of lineTable. Only units in source scope are pro…
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Charlie Curtsinger 2018-03-25 11:31:47 -05:00 committed by GitHub
commit b20e910c4c
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1 changed files with 44 additions and 28 deletions
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72
libcoz/inspect.cpp
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@ -478,41 +478,57 @@ bool memory_map::process_file(const string& name, uintptr_t load_address,
// Walk through the compilation units (source files) in the executable
for(auto unit : d.compilation_units()) {
auto& lineTable = unit.get_line_table();
int fileIndex = 0;
bool needProcess = false;
//check if files using by lineTable are in source_scope
while(true){
try{
if(in_scope(lineTable.get_file(fileIndex)->path, source_scope)){
needProcess = true;
break;
}
fileIndex++;
}catch (out_of_range &e){
break;
}
}
if(needProcess){
try {
string prev_filename;
size_t prev_line;
uintptr_t prev_address = 0;
set<string> included_files;
// Walk through the line instructions in the DWARF line table
for(auto& line_info : unit.get_line_table()) {
// Insert an entry if this isn't the first line command in the sequence
if(in_scope(prev_filename, source_scope)) {
if(prev_address != 0) {
included_files.insert(prev_filename);
add_range(prev_filename,
prev_line,
interval(prev_address, line_info.address) + load_address);
}
}
try {
string prev_filename;
size_t prev_line;
uintptr_t prev_address = 0;
set<string> included_files;
// Walk through the line instructions in the DWARF line table
for(auto& line_info : unit.get_line_table()) {
// Insert an entry if this isn't the first line command in the sequence
if(in_scope(prev_filename, source_scope)) {
if(prev_address != 0) {
included_files.insert(prev_filename);
add_range(prev_filename,
prev_line,
interval(prev_address, line_info.address) + load_address);
if(line_info.end_sequence) {
prev_address = 0;
} else {
prev_filename = canonicalize_path(line_info.file->path);
prev_line = line_info.line;
prev_address = line_info.address;
}
}
process_inlines(unit.root(), unit.get_line_table(), source_scope, load_address);
if(line_info.end_sequence) {
prev_address = 0;
} else {
prev_filename = canonicalize_path(line_info.file->path);
prev_line = line_info.line;
prev_address = line_info.address;
for(const string& filename : included_files) {
INFO << "Included source file " << filename;
}
}
process_inlines(unit.root(), unit.get_line_table(), source_scope, load_address);
for(const string& filename : included_files) {
INFO << "Included source file " << filename;
} catch(dwarf::format_error e) {
WARNING << "Ignoring DWARF format error when reading line table: " << e.what();
}
} catch(dwarf::format_error e) {
WARNING << "Ignoring DWARF format error when reading line table: " << e.what();
}
}//if needProcess
}
return true;