//===- SymbolRecordHelpers.cpp ----------------------------------*- C++ -*-===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// #include "llvm/DebugInfo/CodeView/SymbolRecordHelpers.h" #include "llvm/ADT/SmallVector.h" #include "llvm/DebugInfo/CodeView/SymbolDeserializer.h" using namespace llvm; using namespace llvm::codeview; template <typename RecordT> static RecordT createRecord(const CVSymbol &sym) { RecordT record(static_cast<SymbolRecordKind>(sym.kind())); cantFail(SymbolDeserializer::deserializeAs<RecordT>(sym, record)); return record; } uint32_t llvm::codeview::getScopeEndOffset(const CVSymbol &Sym) { assert(symbolOpensScope(Sym.kind())); switch (Sym.kind()) { case SymbolKind::S_GPROC32: case SymbolKind::S_LPROC32: case SymbolKind::S_GPROC32_ID: case SymbolKind::S_LPROC32_ID: case SymbolKind::S_LPROC32_DPC: case SymbolKind::S_LPROC32_DPC_ID: { ProcSym Proc = createRecord<ProcSym>(Sym); return Proc.End; } case SymbolKind::S_BLOCK32: { BlockSym Block = createRecord<BlockSym>(Sym); return Block.End; } case SymbolKind::S_THUNK32: { Thunk32Sym Thunk = createRecord<Thunk32Sym>(Sym); return Thunk.End; } case SymbolKind::S_INLINESITE: { InlineSiteSym Site = createRecord<InlineSiteSym>(Sym); return Site.End; } default: assert(false && "Unknown record type"); return 0; } } uint32_t llvm::codeview::getScopeParentOffset(const llvm::codeview::CVSymbol &Sym) { assert(symbolOpensScope(Sym.kind())); switch (Sym.kind()) { case SymbolKind::S_GPROC32: case SymbolKind::S_LPROC32: case SymbolKind::S_GPROC32_ID: case SymbolKind::S_LPROC32_ID: case SymbolKind::S_LPROC32_DPC: case SymbolKind::S_LPROC32_DPC_ID: { ProcSym Proc = createRecord<ProcSym>(Sym); return Proc.Parent; } case SymbolKind::S_BLOCK32: { BlockSym Block = createRecord<BlockSym>(Sym); return Block.Parent; } case SymbolKind::S_THUNK32: { Thunk32Sym Thunk = createRecord<Thunk32Sym>(Sym); return Thunk.Parent; } case SymbolKind::S_INLINESITE: { InlineSiteSym Site = createRecord<InlineSiteSym>(Sym); return Site.Parent; } default: assert(false && "Unknown record type"); return 0; } } CVSymbolArray llvm::codeview::limitSymbolArrayToScope(const CVSymbolArray &Symbols, uint32_t ScopeBegin) { CVSymbol Opener = *Symbols.at(ScopeBegin); assert(symbolOpensScope(Opener.kind())); uint32_t EndOffset = getScopeEndOffset(Opener); CVSymbol Closer = *Symbols.at(EndOffset); EndOffset += Closer.RecordData.size(); return Symbols.substream(ScopeBegin, EndOffset); } |