1673a1ba5d
As a followup of https://github.com/llvm/llvm-project/pull/67851, I'm defining a new namespace `lldb_plugin::dwarf` for the classes in this Plugins/SymbolFile/DWARF folder. This change is very NFC and helped me with exporting the necessary symbols for my out-of-tree language plugin. The only class that I didn't change is ClangDWARFASTParser, because that shouldn't be in the same namespace as the generic language-agnostic dwarf parser. It would be a good idea if other plugins follow the same namespace scheme.
67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
//===-- DWARFAttribute.cpp ------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "DWARFAttribute.h"
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#include "DWARFUnit.h"
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#include "DWARFDebugInfo.h"
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using namespace lldb_private::dwarf;
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using namespace lldb_private::plugin::dwarf;
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DWARFAttributes::DWARFAttributes() : m_infos() {}
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DWARFAttributes::~DWARFAttributes() = default;
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uint32_t DWARFAttributes::FindAttributeIndex(dw_attr_t attr) const {
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collection::const_iterator end = m_infos.end();
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collection::const_iterator beg = m_infos.begin();
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collection::const_iterator pos;
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for (pos = beg; pos != end; ++pos) {
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if (pos->attr.get_attr() == attr)
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return std::distance(beg, pos);
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}
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return UINT32_MAX;
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}
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void DWARFAttributes::Append(const DWARFFormValue &form_value,
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dw_offset_t attr_die_offset, dw_attr_t attr) {
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AttributeValue attr_value = {const_cast<DWARFUnit *>(form_value.GetUnit()),
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attr_die_offset,
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{attr, form_value.Form(), form_value.Value()}};
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m_infos.push_back(attr_value);
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}
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bool DWARFAttributes::ExtractFormValueAtIndex(
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uint32_t i, DWARFFormValue &form_value) const {
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const DWARFUnit *cu = CompileUnitAtIndex(i);
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form_value.SetUnit(cu);
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form_value.SetForm(FormAtIndex(i));
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if (form_value.Form() == DW_FORM_implicit_const) {
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form_value.SetValue(ValueAtIndex(i));
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return true;
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}
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lldb::offset_t offset = DIEOffsetAtIndex(i);
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return form_value.ExtractValue(cu->GetData(), &offset);
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}
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DWARFDIE
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DWARFAttributes::FormValueAsReference(dw_attr_t attr) const {
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const uint32_t attr_idx = FindAttributeIndex(attr);
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if (attr_idx != UINT32_MAX)
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return FormValueAsReferenceAtIndex(attr_idx);
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return {};
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}
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DWARFDIE
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DWARFAttributes::FormValueAsReferenceAtIndex(uint32_t i) const {
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DWARFFormValue form_value;
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if (ExtractFormValueAtIndex(i, form_value))
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return form_value.Reference();
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return {};
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}
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