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7b8e8e5dc0
Differential Revision: http://reviews.llvm.org/D9234 Reviewed By: Alexey Samsonov git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235900 91177308-0d34-0410-b5e6-96231b3b80d8
104 lines
3.5 KiB
C++
104 lines
3.5 KiB
C++
//===-- PDBContext.cpp ------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===/
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#include "llvm/DebugInfo/PDB/PDBContext.h"
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#include "llvm/DebugInfo/PDB/IPDBEnumChildren.h"
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#include "llvm/DebugInfo/PDB/IPDBLineNumber.h"
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#include "llvm/DebugInfo/PDB/IPDBSourceFile.h"
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#include "llvm/DebugInfo/PDB/PDBSymbol.h"
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#include "llvm/DebugInfo/PDB/PDBSymbolFunc.h"
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#include "llvm/DebugInfo/PDB/PDBSymbolData.h"
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#include "llvm/Object/COFF.h"
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using namespace llvm;
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using namespace llvm::object;
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PDBContext::PDBContext(const COFFObjectFile &Object,
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std::unique_ptr<IPDBSession> PDBSession)
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: DIContext(CK_PDB), Session(std::move(PDBSession)) {
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uint64_t ImageBase = 0;
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if (Object.is64()) {
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const pe32plus_header *Header = nullptr;
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Object.getPE32PlusHeader(Header);
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if (Header)
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ImageBase = Header->ImageBase;
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} else {
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const pe32_header *Header = nullptr;
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Object.getPE32Header(Header);
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if (Header)
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ImageBase = static_cast<uint64_t>(Header->ImageBase);
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}
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Session->setLoadAddress(ImageBase);
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}
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void PDBContext::dump(raw_ostream &OS, DIDumpType DumpType) {}
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DILineInfo PDBContext::getLineInfoForAddress(uint64_t Address,
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DILineInfoSpecifier Specifier) {
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auto Symbol = Session->findSymbolByAddress(Address);
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uint32_t Length = 1;
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DILineInfo Result;
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if (auto Func = dyn_cast_or_null<PDBSymbolFunc>(Symbol.get())) {
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if (Specifier.FNKind == DINameKind::LinkageName)
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Result.FunctionName = Func->getUndecoratedName();
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else if (Specifier.FNKind == DINameKind::ShortName)
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Result.FunctionName = Func->getName();
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Length = Func->getLength();
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} else if (auto Data = dyn_cast_or_null<PDBSymbolData>(Symbol.get())) {
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Length = Data->getLength();
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}
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// If we couldn't find a symbol, then just assume 1 byte, so that we get
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// only the line number of the first instruction.
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auto LineNumbers = Session->findLineNumbersByAddress(Address, Length);
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if (!LineNumbers || LineNumbers->getChildCount() == 0)
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return Result;
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auto LineInfo = LineNumbers->getNext();
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assert(LineInfo);
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auto SourceFile = Session->getSourceFileById(LineInfo->getSourceFileId());
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if (SourceFile &&
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Specifier.FLIKind != DILineInfoSpecifier::FileLineInfoKind::None)
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Result.FileName = SourceFile->getFileName();
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Result.Column = LineInfo->getColumnNumber();
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Result.Line = LineInfo->getLineNumber();
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return Result;
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}
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DILineInfoTable
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PDBContext::getLineInfoForAddressRange(uint64_t Address, uint64_t Size,
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DILineInfoSpecifier Specifier) {
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if (Size == 0)
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return DILineInfoTable();
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DILineInfoTable Table;
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auto LineNumbers = Session->findLineNumbersByAddress(Address, Size);
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if (!LineNumbers || LineNumbers->getChildCount() == 0)
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return Table;
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while (auto LineInfo = LineNumbers->getNext()) {
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DILineInfo LineEntry =
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getLineInfoForAddress(LineInfo->getVirtualAddress(), Specifier);
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Table.push_back(std::make_pair(LineInfo->getVirtualAddress(), LineEntry));
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}
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return Table;
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}
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DIInliningInfo
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PDBContext::getInliningInfoForAddress(uint64_t Address,
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DILineInfoSpecifier Specifier) {
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DIInliningInfo InlineInfo;
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DILineInfo Frame = getLineInfoForAddress(Address, Specifier);
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InlineInfo.addFrame(Frame);
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return InlineInfo;
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}
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