Method loadDwarf_subprogram

src/debugformat/dwarf.cpp:106–255

}

retdec::common::Function DebugFormat::loadDwarf_subprogram(llvm::DWARFDie die)
{
	// Start & end address.
	//
	common::Address start, end;
	if (auto s = llvm::dwarf::toAddress(die.find(llvm::dwarf::DW_AT_low_pc)))
	{
		start = s.getValue();
	}
	else if (auto s = llvm::dwarf::toUnsigned(die.find(llvm::dwarf::DW_AT_low_pc)))
	{
		start = s.getValue();
	}
	if (auto e = llvm::dwarf::toAddress(die.find(llvm::dwarf::DW_AT_high_pc)))
	{
		end = e.getValue();
	}
	else if (auto e = llvm::dwarf::toUnsigned(die.find(llvm::dwarf::DW_AT_high_pc)))
	{
		if (start)
		{
			end = start + e.getValue();
		}
	}
	if (start.isUndefined() || end.isUndefined() || end <= start)
	{
		return retdec::common::Function();
	}

	// Names
	//
	std::string name, linkageName, demangledName;
	if (auto n = llvm::dwarf::toString(die.find(
			llvm::dwarf::DW_AT_name)))
	{
		name = n.getValue();
	}
	auto ln = llvm::dwarf::toString(die.find(llvm::dwarf::DW_AT_linkage_name));
	if (!ln.hasValue())
	{
		ln = llvm::dwarf::toString(die.find(llvm::dwarf::DW_AT_MIPS_linkage_name));
	}
	if (ln.hasValue())
	{
		linkageName = ln.getValue();
		auto dn = _demangler->demangleToString(linkageName);
		demangledName = dn.empty() ? linkageName : dn;
	}
	if (name.empty() && linkageName.empty())
	{
		return retdec::common::Function();
	}

	auto* unit = die.getDwarfUnit();
	auto* lines = unit->getContext().getLineTableForUnit(unit);

	retdec::common::Function dif(linkageName.empty() ? name : linkageName);