[CodeView] Rename ModuleDebugFragment -> DebugSubsection.
This is more concise, and matches the terminology used in other
parts of the codebase more closely.
llvm-svn: 304218
diff --git a/llvm/lib/DebugInfo/CodeView/DebugLinesSubsection.cpp b/llvm/lib/DebugInfo/CodeView/DebugLinesSubsection.cpp
new file mode 100644
index 0000000..c973845
--- /dev/null
+++ b/llvm/lib/DebugInfo/CodeView/DebugLinesSubsection.cpp
@@ -0,0 +1,159 @@
+//===- DebugLinesSubsection.cpp -------------------------------*- C++-*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DebugInfo/CodeView/DebugLinesSubsection.h"
+
+#include "llvm/DebugInfo/CodeView/CodeViewError.h"
+#include "llvm/DebugInfo/CodeView/DebugChecksumsSubsection.h"
+#include "llvm/DebugInfo/CodeView/DebugSubsectionRecord.h"
+#include "llvm/DebugInfo/CodeView/StringTable.h"
+
+using namespace llvm;
+using namespace llvm::codeview;
+
+Error LineColumnExtractor::extract(BinaryStreamRef Stream, uint32_t &Len,
+ LineColumnEntry &Item,
+ const LineFragmentHeader *Header) {
+ using namespace codeview;
+ const LineBlockFragmentHeader *BlockHeader;
+ BinaryStreamReader Reader(Stream);
+ if (auto EC = Reader.readObject(BlockHeader))
+ return EC;
+ bool HasColumn = Header->Flags & uint16_t(LF_HaveColumns);
+ uint32_t LineInfoSize =
+ BlockHeader->NumLines *
+ (sizeof(LineNumberEntry) + (HasColumn ? sizeof(ColumnNumberEntry) : 0));
+ if (BlockHeader->BlockSize < sizeof(LineBlockFragmentHeader))
+ return make_error<CodeViewError>(cv_error_code::corrupt_record,
+ "Invalid line block record size");
+ uint32_t Size = BlockHeader->BlockSize - sizeof(LineBlockFragmentHeader);
+ if (LineInfoSize > Size)
+ return make_error<CodeViewError>(cv_error_code::corrupt_record,
+ "Invalid line block record size");
+ // The value recorded in BlockHeader->BlockSize includes the size of
+ // LineBlockFragmentHeader.
+ Len = BlockHeader->BlockSize;
+ Item.NameIndex = BlockHeader->NameIndex;
+ if (auto EC = Reader.readArray(Item.LineNumbers, BlockHeader->NumLines))
+ return EC;
+ if (HasColumn) {
+ if (auto EC = Reader.readArray(Item.Columns, BlockHeader->NumLines))
+ return EC;
+ }
+ return Error::success();
+}
+
+DebugLinesSubsectionRef::DebugLinesSubsectionRef()
+ : DebugSubsectionRef(DebugSubsectionKind::Lines) {}
+
+Error DebugLinesSubsectionRef::initialize(BinaryStreamReader Reader) {
+ if (auto EC = Reader.readObject(Header))
+ return EC;
+
+ if (auto EC =
+ Reader.readArray(LinesAndColumns, Reader.bytesRemaining(), Header))
+ return EC;
+
+ return Error::success();
+}
+
+bool DebugLinesSubsectionRef::hasColumnInfo() const {
+ return !!(Header->Flags & LF_HaveColumns);
+}
+
+DebugLinesSubsection::DebugLinesSubsection(DebugChecksumsSubsection &Checksums,
+ StringTable &Strings)
+ : DebugSubsection(DebugSubsectionKind::Lines), Checksums(Checksums) {}
+
+void DebugLinesSubsection::createBlock(StringRef FileName) {
+ uint32_t Offset = Checksums.mapChecksumOffset(FileName);
+
+ Blocks.emplace_back(Offset);
+}
+
+void DebugLinesSubsection::addLineInfo(uint32_t Offset, const LineInfo &Line) {
+ Block &B = Blocks.back();
+ LineNumberEntry LNE;
+ LNE.Flags = Line.getRawData();
+ LNE.Offset = Offset;
+ B.Lines.push_back(LNE);
+}
+
+void DebugLinesSubsection::addLineAndColumnInfo(uint32_t Offset,
+ const LineInfo &Line,
+ uint32_t ColStart,
+ uint32_t ColEnd) {
+ Block &B = Blocks.back();
+ assert(B.Lines.size() == B.Columns.size());
+
+ addLineInfo(Offset, Line);
+ ColumnNumberEntry CNE;
+ CNE.StartColumn = ColStart;
+ CNE.EndColumn = ColEnd;
+ B.Columns.push_back(CNE);
+}
+
+Error DebugLinesSubsection::commit(BinaryStreamWriter &Writer) {
+ LineFragmentHeader Header;
+ Header.CodeSize = CodeSize;
+ Header.Flags = hasColumnInfo() ? LF_HaveColumns : 0;
+ Header.RelocOffset = RelocOffset;
+ Header.RelocSegment = RelocSegment;
+
+ if (auto EC = Writer.writeObject(Header))
+ return EC;
+
+ for (const auto &B : Blocks) {
+ LineBlockFragmentHeader BlockHeader;
+ assert(B.Lines.size() == B.Columns.size() || B.Columns.empty());
+
+ BlockHeader.NumLines = B.Lines.size();
+ BlockHeader.BlockSize = sizeof(LineBlockFragmentHeader);
+ BlockHeader.BlockSize += BlockHeader.NumLines * sizeof(LineNumberEntry);
+ if (hasColumnInfo())
+ BlockHeader.BlockSize += BlockHeader.NumLines * sizeof(ColumnNumberEntry);
+ BlockHeader.NameIndex = B.ChecksumBufferOffset;
+ if (auto EC = Writer.writeObject(BlockHeader))
+ return EC;
+
+ if (auto EC = Writer.writeArray(makeArrayRef(B.Lines)))
+ return EC;
+
+ if (hasColumnInfo()) {
+ if (auto EC = Writer.writeArray(makeArrayRef(B.Columns)))
+ return EC;
+ }
+ }
+ return Error::success();
+}
+
+uint32_t DebugLinesSubsection::calculateSerializedLength() {
+ uint32_t Size = sizeof(LineFragmentHeader);
+ for (const auto &B : Blocks) {
+ Size += sizeof(LineBlockFragmentHeader);
+ Size += B.Lines.size() * sizeof(LineNumberEntry);
+ if (hasColumnInfo())
+ Size += B.Columns.size() * sizeof(ColumnNumberEntry);
+ }
+ return Size;
+}
+
+void DebugLinesSubsection::setRelocationAddress(uint16_t Segment,
+ uint16_t Offset) {
+ RelocOffset = Offset;
+ RelocSegment = Segment;
+}
+
+void DebugLinesSubsection::setCodeSize(uint32_t Size) { CodeSize = Size; }
+
+void DebugLinesSubsection::setFlags(LineFlags Flags) { this->Flags = Flags; }
+
+bool DebugLinesSubsection::hasColumnInfo() const {
+ return Flags & LF_HaveColumns;
+}