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LibDebug: Move get_attribute_value to the DwarfInfo class

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This commit is contained in:
Gunnar Beutner 2021-04-28 20:12:21 +02:00 • committed by Andreas Kling
parent d9ee2c6a89
commit ea6fdad88b
5 changed files with 189 additions and 187 deletions
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150
Userland/Libraries/LibDebug/Dwarf/DwarfInfo.cpp
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@ -48,4 +48,154 @@ void DwarfInfo::populate_compilation_units()
}
}
AttributeValue DwarfInfo::get_attribute_value(AttributeDataForm form,
InputMemoryStream& debug_info_stream, const CompilationUnit* unit) const
{
AttributeValue value;
auto assign_raw_bytes_value = [&](size_t length) {
value.data.as_raw_bytes.length = length;
value.data.as_raw_bytes.bytes = reinterpret_cast<const u8*>(debug_info_data().data()
+ debug_info_stream.offset());
debug_info_stream.discard_or_error(length);
};
switch (form) {
case AttributeDataForm::StringPointer: {
u32 offset;
debug_info_stream >> offset;
VERIFY(!debug_info_stream.has_any_error());
value.type = AttributeValue::Type::String;
auto strings_data = debug_strings_data();
value.data.as_string = reinterpret_cast<const char*>(strings_data.data() + offset);
break;
}
case AttributeDataForm::Data1: {
u8 data;
debug_info_stream >> data;
VERIFY(!debug_info_stream.has_any_error());
value.type = AttributeValue::Type::UnsignedNumber;
value.data.as_u32 = data;
break;
}
case AttributeDataForm::Data2: {
u16 data;
debug_info_stream >> data;
VERIFY(!debug_info_stream.has_any_error());
value.type = AttributeValue::Type::UnsignedNumber;
value.data.as_u32 = data;
break;
}
case AttributeDataForm::Addr: {
u32 address;
debug_info_stream >> address;
VERIFY(!debug_info_stream.has_any_error());
value.type = AttributeValue::Type::UnsignedNumber;
value.data.as_u32 = address;
break;
}
case AttributeDataForm::SData: {
ssize_t data;
debug_info_stream.read_LEB128_signed(data);
VERIFY(!debug_info_stream.has_any_error());
value.type = AttributeValue::Type::SignedNumber;
value.data.as_i32 = data;
break;
}
case AttributeDataForm::SecOffset: {
u32 data;
debug_info_stream >> data;
VERIFY(!debug_info_stream.has_any_error());
value.type = AttributeValue::Type::SecOffset;
value.data.as_u32 = data;
break;
}
case AttributeDataForm::Data4: {
u32 data;
debug_info_stream >> data;
VERIFY(!debug_info_stream.has_any_error());
value.type = AttributeValue::Type::UnsignedNumber;
value.data.as_u32 = data;
break;
}
case AttributeDataForm::Data8: {
u64 data;
debug_info_stream >> data;
VERIFY(!debug_info_stream.has_any_error());
value.type = AttributeValue::Type::LongUnsignedNumber;
value.data.as_u64 = data;
break;
}
case AttributeDataForm::Ref4: {
u32 data;
debug_info_stream >> data;
VERIFY(!debug_info_stream.has_any_error());
value.type = AttributeValue::Type::DieReference;
VERIFY(unit);
value.data.as_u32 = data + unit->offset();
break;
}
case AttributeDataForm::FlagPresent: {
value.type = AttributeValue::Type::Boolean;
value.data.as_bool = true;
break;
}
case AttributeDataForm::ExprLoc: {
size_t length;
debug_info_stream.read_LEB128_unsigned(length);
VERIFY(!debug_info_stream.has_any_error());
value.type = AttributeValue::Type::DwarfExpression;
assign_raw_bytes_value(length);
break;
}
case AttributeDataForm::String: {
String str;
u32 str_offset = debug_info_stream.offset();
debug_info_stream >> str;
VERIFY(!debug_info_stream.has_any_error());
value.type = AttributeValue::Type::String;
value.data.as_string = reinterpret_cast<const char*>(str_offset + debug_info_data().data());
break;
}
case AttributeDataForm::Block1: {
value.type = AttributeValue::Type::RawBytes;
u8 length;
debug_info_stream >> length;
VERIFY(!debug_info_stream.has_any_error());
assign_raw_bytes_value(length);
break;
}
case AttributeDataForm::Block2: {
value.type = AttributeValue::Type::RawBytes;
u16 length;
debug_info_stream >> length;
VERIFY(!debug_info_stream.has_any_error());
assign_raw_bytes_value(length);
break;
}
case AttributeDataForm::Block4: {
value.type = AttributeValue::Type::RawBytes;
u32 length;
debug_info_stream >> length;
VERIFY(!debug_info_stream.has_any_error());
assign_raw_bytes_value(length);
break;
}
case AttributeDataForm::Block: {
value.type = AttributeValue::Type::RawBytes;
size_t length;
debug_info_stream.read_LEB128_unsigned(length);
VERIFY(!debug_info_stream.has_any_error());
assign_raw_bytes_value(length);
break;
}
default:
dbgln("Unimplemented AttributeDataForm: {}", (u32)form);
VERIFY_NOT_REACHED();
}
return value;
}
}