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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
97 lines
3.3 KiB
C++
97 lines
3.3 KiB
C++
//===- DebugCrossImpSubsection.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 "llvm/DebugInfo/CodeView/DebugCrossImpSubsection.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/DebugInfo/CodeView/CodeViewError.h"
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#include "llvm/DebugInfo/CodeView/DebugStringTableSubsection.h"
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#include "llvm/Support/BinaryStreamReader.h"
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#include "llvm/Support/BinaryStreamWriter.h"
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#include "llvm/Support/Endian.h"
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#include "llvm/Support/Error.h"
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#include <algorithm>
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#include <cstdint>
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#include <utility>
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#include <vector>
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using namespace llvm;
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using namespace llvm::codeview;
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Error VarStreamArrayExtractor<CrossModuleImportItem>::
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operator()(BinaryStreamRef Stream, uint32_t &Len,
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codeview::CrossModuleImportItem &Item) {
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BinaryStreamReader Reader(Stream);
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if (Reader.bytesRemaining() < sizeof(CrossModuleImport))
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return make_error<CodeViewError>(
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cv_error_code::insufficient_buffer,
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"Not enough bytes for a Cross Module Import Header!");
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if (auto EC = Reader.readObject(Item.Header))
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return EC;
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if (Reader.bytesRemaining() < Item.Header->Count * sizeof(uint32_t))
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return make_error<CodeViewError>(
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cv_error_code::insufficient_buffer,
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"Not enough to read specified number of Cross Module References!");
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if (auto EC = Reader.readArray(Item.Imports, Item.Header->Count))
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return EC;
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return Error::success();
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}
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Error DebugCrossModuleImportsSubsectionRef::initialize(
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BinaryStreamReader Reader) {
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return Reader.readArray(References, Reader.bytesRemaining());
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}
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Error DebugCrossModuleImportsSubsectionRef::initialize(BinaryStreamRef Stream) {
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BinaryStreamReader Reader(Stream);
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return initialize(Reader);
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}
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void DebugCrossModuleImportsSubsection::addImport(StringRef Module,
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uint32_t ImportId) {
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Strings.insert(Module);
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std::vector<support::ulittle32_t> Targets = {support::ulittle32_t(ImportId)};
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auto Result = Mappings.insert(std::make_pair(Module, Targets));
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if (!Result.second)
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Result.first->getValue().push_back(Targets[0]);
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}
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uint32_t DebugCrossModuleImportsSubsection::calculateSerializedSize() const {
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uint32_t Size = 0;
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for (const auto &Item : Mappings) {
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Size += sizeof(CrossModuleImport);
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Size += sizeof(support::ulittle32_t) * Item.second.size();
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}
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return Size;
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}
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Error DebugCrossModuleImportsSubsection::commit(
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BinaryStreamWriter &Writer) const {
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using T = decltype(&*Mappings.begin());
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std::vector<T> Ids;
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Ids.reserve(Mappings.size());
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for (const auto &M : Mappings)
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Ids.push_back(&M);
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llvm::sort(Ids, [this](const T &L1, const T &L2) {
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return Strings.getIdForString(L1->getKey()) <
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Strings.getIdForString(L2->getKey());
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});
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for (const auto &Item : Ids) {
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CrossModuleImport Imp;
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Imp.ModuleNameOffset = Strings.getIdForString(Item->getKey());
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Imp.Count = Item->getValue().size();
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if (auto EC = Writer.writeObject(Imp))
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return EC;
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if (auto EC = Writer.writeArray(makeArrayRef(Item->getValue())))
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return EC;
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}
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return Error::success();
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}
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