2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
99 lines
3.1 KiB
C++
99 lines
3.1 KiB
C++
//===-- DWARFAbbreviationDeclaration.cpp ------------------------*- C++ -*-===//
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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 "DWARFAbbreviationDeclaration.h"
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#include "lldb/Core/dwarf.h"
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#include "lldb/Utility/Stream.h"
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#include "DWARFFormValue.h"
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using namespace lldb_private;
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DWARFAbbreviationDeclaration::DWARFAbbreviationDeclaration()
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: m_code(InvalidCode), m_tag(0), m_has_children(0), m_attributes() {}
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DWARFAbbreviationDeclaration::DWARFAbbreviationDeclaration(dw_tag_t tag,
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uint8_t has_children)
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: m_code(InvalidCode), m_tag(tag), m_has_children(has_children),
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m_attributes() {}
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bool DWARFAbbreviationDeclaration::Extract(const DWARFDataExtractor &data,
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lldb::offset_t *offset_ptr) {
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return Extract(data, offset_ptr, data.GetULEB128(offset_ptr));
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}
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bool DWARFAbbreviationDeclaration::Extract(const DWARFDataExtractor &data,
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lldb::offset_t *offset_ptr,
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dw_uleb128_t code) {
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m_code = code;
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m_attributes.clear();
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if (m_code) {
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m_tag = data.GetULEB128(offset_ptr);
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m_has_children = data.GetU8(offset_ptr);
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while (data.ValidOffset(*offset_ptr)) {
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dw_attr_t attr = data.GetULEB128(offset_ptr);
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dw_form_t form = data.GetULEB128(offset_ptr);
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DWARFFormValue::ValueType val;
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if (form == DW_FORM_implicit_const)
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val.value.sval = data.GetULEB128(offset_ptr);
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if (attr && form)
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m_attributes.push_back(DWARFAttribute(attr, form, val));
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else
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break;
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}
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return m_tag != 0;
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} else {
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m_tag = 0;
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m_has_children = 0;
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}
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return false;
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}
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void DWARFAbbreviationDeclaration::Dump(Stream *s) const {
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s->Printf("Debug Abbreviation Declaration: code = 0x%4.4x, tag = %s, "
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"has_children = %s\n",
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m_code, DW_TAG_value_to_name(m_tag),
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DW_CHILDREN_value_to_name(m_has_children));
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DWARFAttribute::const_iterator pos;
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for (pos = m_attributes.begin(); pos != m_attributes.end(); ++pos)
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s->Printf(" attr = %s, form = %s\n",
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DW_AT_value_to_name(pos->get_attr()),
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DW_FORM_value_to_name(pos->get_form()));
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s->Printf("\n");
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}
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bool DWARFAbbreviationDeclaration::IsValid() {
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return m_code != 0 && m_tag != 0;
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}
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uint32_t
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DWARFAbbreviationDeclaration::FindAttributeIndex(dw_attr_t attr) const {
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uint32_t i;
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const uint32_t kNumAttributes = m_attributes.size();
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for (i = 0; i < kNumAttributes; ++i) {
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if (m_attributes[i].get_attr() == attr)
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return i;
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}
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return DW_INVALID_INDEX;
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}
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bool DWARFAbbreviationDeclaration::
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operator==(const DWARFAbbreviationDeclaration &rhs) const {
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return Tag() == rhs.Tag() && HasChildren() == rhs.HasChildren() &&
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Attributes() == rhs.Attributes();
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}
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