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https://github.com/quizhizhe/LiteLoaderBDS-1.16.40.git
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50 lines
2.0 KiB
C++
50 lines
2.0 KiB
C++
// Copyright 2011-2022, Molecular Matters GmbH <office@molecular-matters.com>
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// See LICENSE.txt for licensing details (2-clause BSD License: https://opensource.org/licenses/BSD-2-Clause)
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#include "PDB_PCH.h"
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#include "PDB_PublicSymbolStream.h"
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#include "PDB_RawFile.h"
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#include "PDB_Types.h"
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#include "PDB_DBITypes.h"
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// ------------------------------------------------------------------------------------------------
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// ------------------------------------------------------------------------------------------------
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PDB::PublicSymbolStream::PublicSymbolStream(void) PDB_NO_EXCEPT
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: m_stream()
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, m_hashRecords(nullptr)
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, m_count(0u)
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{
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}
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// ------------------------------------------------------------------------------------------------
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// ------------------------------------------------------------------------------------------------
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PDB::PublicSymbolStream::PublicSymbolStream(const RawFile& file, uint16_t streamIndex, uint32_t count) PDB_NO_EXCEPT
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: m_stream(file.CreateMSFStream<CoalescedMSFStream>(streamIndex))
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, m_hashRecords(m_stream.GetDataAtOffset<HashRecord>(sizeof(PublicStreamHeader) + sizeof(HashTableHeader)))
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, m_count(count)
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{
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}
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// ------------------------------------------------------------------------------------------------
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// ------------------------------------------------------------------------------------------------
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PDB_NO_DISCARD const PDB::CodeView::DBI::Record* PDB::PublicSymbolStream::GetRecord(const CoalescedMSFStream& symbolRecordStream, const HashRecord& hashRecord) const PDB_NO_EXCEPT
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{
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// hash record offsets start at 1, not at 0
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const uint32_t headerOffset = hashRecord.offset - 1u;
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// the offset doesn't point to the public symbol directly, but to the CodeView record:
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// https://llvm.org/docs/PDB/CodeViewSymbols.html
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const CodeView::DBI::Record* record = symbolRecordStream.GetDataAtOffset<const CodeView::DBI::Record>(headerOffset);
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if (record->header.kind != CodeView::DBI::SymbolRecordKind::S_PUB32)
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{
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// malformed data
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return nullptr;
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}
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return record;
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}
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