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LibDebug: Parse DWARF address ranges using Core::Stream

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This commit is contained in:
Tim Schumacher 2023-01-21 12:50:04 +01:00 • committed by Andreas Kling
parent 908b88db34
commit e235c42e4d
3 changed files with 56 additions and 50 deletions
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25
Userland/Libraries/LibDebug/Dwarf/DwarfInfo.cpp
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@ -11,6 +11,7 @@
#include <AK/ByteReader.h>
#include <AK/MemoryStream.h>
#include <LibCore/MemoryStream.h>
#include <LibDebug/DebugInfo.h>
namespace Debug::Dwarf {
@ -337,7 +338,7 @@ void DwarfInfo::build_cached_dies() const
m_cached_dies_by_range.insert(range.start_address, DIEAndRange { die, range });
m_cached_dies_by_offset.insert(die.offset(), die);
};
auto get_ranges_of_die = [this](DIE const& die) -> Vector<DIERange> {
auto get_ranges_of_die = [this](DIE const& die) -> ErrorOr<Vector<DIERange>> {
auto ranges = die.get_attribute(Attribute::Ranges);
if (ranges.has_value()) {
size_t offset;
@ -353,15 +354,19 @@ void DwarfInfo::build_cached_dies() const
Vector<DIERange> entries;
if (die.compilation_unit().dwarf_version() == 5) {
AddressRangesV5 address_ranges(debug_range_lists_data(), offset, die.compilation_unit());
address_ranges.for_each_range([&entries](auto range) {
auto range_lists_stream = TRY(Core::Stream::FixedMemoryStream::construct(debug_range_lists_data()));
TRY(range_lists_stream->seek(offset));
AddressRangesV5 address_ranges(move(range_lists_stream), die.compilation_unit());
TRY(address_ranges.for_each_range([&entries](auto range) {
entries.empend(range.start, range.end);
});
}));
} else {
AddressRangesV4 address_ranges(debug_ranges_data(), offset, die.compilation_unit());
address_ranges.for_each_range([&entries](auto range) {
auto ranges_stream = TRY(Core::Stream::FixedMemoryStream::construct(debug_ranges_data()));
TRY(ranges_stream->seek(offset));
AddressRangesV4 address_ranges(move(ranges_stream), die.compilation_unit());
TRY(address_ranges.for_each_range([&entries](auto range) {
entries.empend(range.start, range.end);
});
}));
}
return entries;
}
@ -370,7 +375,7 @@ void DwarfInfo::build_cached_dies() const
auto end = die.get_attribute(Attribute::HighPc);
if (!start.has_value() || !end.has_value())
return {};
return Vector<DIERange> {};
VERIFY(start->type() == Dwarf::AttributeValue::Type::Address);
@ -383,14 +388,14 @@ void DwarfInfo::build_cached_dies() const
else
range_end = start->as_addr() + end->as_unsigned();
return { DIERange { start.value().as_addr(), range_end } };
return Vector<DIERange> { DIERange { start.value().as_addr(), range_end } };
};
// If we simply use a lambda, type deduction fails because it's used recursively.
Function<void(DIE const& die)> insert_to_cache_recursively;
insert_to_cache_recursively = [&](DIE const& die) {
if (die.offset() == 0 || die.parent_offset().has_value()) {
auto ranges = get_ranges_of_die(die);
auto ranges = get_ranges_of_die(die).release_value_but_fixme_should_propagate_errors();
for (auto& range : ranges) {
insert_to_cache(die, range);
}