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//===- ModuleDebugLineFragment.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/ModuleDebugLineFragment.h"
#include "llvm/DebugInfo/CodeView/CodeViewError.h"
#include "llvm/DebugInfo/CodeView/ModuleDebugFragmentRecord.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 & uint32_t(LineFlags::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();
}
ModuleDebugLineFragment::ModuleDebugLineFragment()
: ModuleDebugFragment(ModuleDebugFragmentKind::Lines) {}
Error ModuleDebugLineFragment::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();
}
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