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/*
* Copyright (c) 2021, Itamar S. <itamar8910@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "ProcessInspector.h"
#include "DebugInfo.h"
namespace Debug {
LoadedLibrary const* ProcessInspector::library_at(FlatPtr address) const
{
LoadedLibrary const* result = nullptr;
for_each_loaded_library([&result, address](auto const& lib) {
if (address >= lib.base_address && address < lib.base_address + lib.debug_info->elf().size()) {
result = &lib;
return IterationDecision::Break;
}
return IterationDecision::Continue;
});
return result;
}
Optional<ProcessInspector::SymbolicationResult> ProcessInspector::symbolicate(FlatPtr address) const
{
auto* lib = library_at(address);
if (!lib)
return {};
// FIXME: ELF::Image symbolicate() API should return String::empty() if symbol is not found (It currently returns ??)
auto symbol = lib->debug_info->elf().symbolicate(address - lib->base_address);
return { { lib->name, symbol } };
}
Optional<DebugInfo::SourcePositionAndAddress> ProcessInspector::get_address_from_source_position(String const& file, size_t line) const
{
Optional<DebugInfo::SourcePositionAndAddress> result;
for_each_loaded_library([file, line, &result](auto& lib) {
// The loader contains its own definitions for LibC symbols, so we don't want to include it in the search.
if (lib.name == "Loader.so")
return IterationDecision::Continue;
auto source_position_and_address = lib.debug_info->get_address_from_source_position(file, line);
if (!source_position_and_address.has_value())
return IterationDecision::Continue;
result = source_position_and_address;
result.value().address += lib.base_address;
return IterationDecision::Break;
});
return result;
}
Optional<DebugInfo::SourcePosition> ProcessInspector::get_source_position(FlatPtr address) const
{
auto* lib = library_at(address);
if (!lib)
return {};
return lib->debug_info->get_source_position(address - lib->base_address);
}
}
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