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279a200561
That patch is the fix for https://bugs.llvm.org/show_bug.cgi?id=40703 "wrong line number info for obj file compiled with -ffunction-sections" bug. The problem happened with only .o files. If object file contains several .text sections then line number information showed incorrectly. The reason for this is that DwarfLineTable could not detect section which corresponds to specified address(because address is the local to the section). And as the result it could not select proper sequence in the line table. The fix is to pass SectionIndex with the address. So that it would be possible to differentiate addresses from various sections. With this fix llvm-objdump shows correct line numbers for disassembled code. Differential review: https://reviews.llvm.org/D58194 llvm-svn: 354972
65 lines
2.2 KiB
C++
65 lines
2.2 KiB
C++
//===-- PDBContext.h --------------------------------------------*- C++ -*-===//
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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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#ifndef LLVM_DEBUGINFO_PDB_PDBCONTEXT_H
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#define LLVM_DEBUGINFO_PDB_PDBCONTEXT_H
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#include "llvm/DebugInfo/DIContext.h"
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#include "llvm/DebugInfo/PDB/IPDBSession.h"
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#include <cstdint>
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#include <memory>
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#include <string>
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namespace llvm {
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namespace object {
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class COFFObjectFile;
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} // end namespace object
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namespace pdb {
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/// PDBContext
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/// This data structure is the top level entity that deals with PDB debug
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/// information parsing. This data structure exists only when there is a
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/// need for a transparent interface to different debug information formats
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/// (e.g. PDB and DWARF). More control and power over the debug information
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/// access can be had by using the PDB interfaces directly.
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class PDBContext : public DIContext {
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public:
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PDBContext(const object::COFFObjectFile &Object,
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std::unique_ptr<IPDBSession> PDBSession);
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PDBContext(PDBContext &) = delete;
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PDBContext &operator=(PDBContext &) = delete;
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static bool classof(const DIContext *DICtx) {
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return DICtx->getKind() == CK_PDB;
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}
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void dump(raw_ostream &OS, DIDumpOptions DIDumpOpts) override;
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DILineInfo getLineInfoForAddress(
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object::SectionedAddress Address,
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DILineInfoSpecifier Specifier = DILineInfoSpecifier()) override;
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DILineInfoTable getLineInfoForAddressRange(
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object::SectionedAddress Address, uint64_t Size,
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DILineInfoSpecifier Specifier = DILineInfoSpecifier()) override;
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DIInliningInfo getInliningInfoForAddress(
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object::SectionedAddress Address,
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DILineInfoSpecifier Specifier = DILineInfoSpecifier()) override;
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private:
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std::string getFunctionName(uint64_t Address, DINameKind NameKind) const;
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std::unique_ptr<IPDBSession> Session;
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};
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} // end namespace pdb
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} // end namespace llvm
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#endif // LLVM_DEBUGINFO_PDB_PDBCONTEXT_H
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