mirror of
https://github.com/c64scene-ar/llvm-6502.git
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e26d79386b
This reverts commit r221842 which was a revert of r221836 and of the test parts of r221837. This new version fixes an UB bug pointed out by David (along with addressing some other review comments), makes some dumping more resilient to broken input data and forces the accelerator tables to be dumped in the tests where we use them (this decision is platform specific otherwise). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222003 91177308-0d34-0410-b5e6-96231b3b80d8
293 lines
11 KiB
C++
293 lines
11 KiB
C++
//===-- DWARFContext.h ------------------------------------------*- 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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#ifndef LLVM_LIB_DEBUGINFO_DWARFCONTEXT_H
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#define LLVM_LIB_DEBUGINFO_DWARFCONTEXT_H
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#include "DWARFCompileUnit.h"
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#include "DWARFDebugAranges.h"
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#include "DWARFDebugFrame.h"
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#include "DWARFDebugLine.h"
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#include "DWARFDebugLoc.h"
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#include "DWARFDebugRangeList.h"
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#include "DWARFSection.h"
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#include "DWARFTypeUnit.h"
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#include "llvm/ADT/MapVector.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/DebugInfo/DIContext.h"
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#include <vector>
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namespace llvm {
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/// DWARFContext
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/// This data structure is the top level entity that deals with dwarf debug
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/// information parsing. The actual data is supplied through pure virtual
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/// methods that a concrete implementation provides.
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class DWARFContext : public DIContext {
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DWARFUnitSection<DWARFCompileUnit> CUs;
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std::vector<DWARFUnitSection<DWARFTypeUnit>> TUs;
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std::unique_ptr<DWARFDebugAbbrev> Abbrev;
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std::unique_ptr<DWARFDebugLoc> Loc;
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std::unique_ptr<DWARFDebugAranges> Aranges;
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std::unique_ptr<DWARFDebugLine> Line;
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std::unique_ptr<DWARFDebugFrame> DebugFrame;
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DWARFUnitSection<DWARFCompileUnit> DWOCUs;
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std::vector<DWARFUnitSection<DWARFTypeUnit>> DWOTUs;
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std::unique_ptr<DWARFDebugAbbrev> AbbrevDWO;
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std::unique_ptr<DWARFDebugLocDWO> LocDWO;
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DWARFContext(DWARFContext &) LLVM_DELETED_FUNCTION;
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DWARFContext &operator=(DWARFContext &) LLVM_DELETED_FUNCTION;
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/// Read compile units from the debug_info section (if necessary)
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/// and store them in CUs.
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void parseCompileUnits();
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/// Read type units from the debug_types sections (if necessary)
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/// and store them in TUs.
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void parseTypeUnits();
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/// Read compile units from the debug_info.dwo section (if necessary)
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/// and store them in DWOCUs.
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void parseDWOCompileUnits();
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/// Read type units from the debug_types.dwo section (if necessary)
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/// and store them in DWOTUs.
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void parseDWOTypeUnits();
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public:
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DWARFContext() : DIContext(CK_DWARF) {}
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static bool classof(const DIContext *DICtx) {
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return DICtx->getKind() == CK_DWARF;
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}
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void dump(raw_ostream &OS, DIDumpType DumpType = DIDT_All) override;
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typedef DWARFUnitSection<DWARFCompileUnit>::iterator_range cu_iterator_range;
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typedef DWARFUnitSection<DWARFTypeUnit>::iterator_range tu_iterator_range;
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typedef iterator_range<std::vector<DWARFUnitSection<DWARFTypeUnit>>::iterator> tu_section_iterator_range;
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/// Get compile units in this context.
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cu_iterator_range compile_units() {
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parseCompileUnits();
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return cu_iterator_range(CUs.begin(), CUs.end());
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}
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/// Get type units in this context.
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tu_section_iterator_range type_unit_sections() {
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parseTypeUnits();
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return tu_section_iterator_range(TUs.begin(), TUs.end());
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}
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/// Get compile units in the DWO context.
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cu_iterator_range dwo_compile_units() {
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parseDWOCompileUnits();
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return cu_iterator_range(DWOCUs.begin(), DWOCUs.end());
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}
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/// Get type units in the DWO context.
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tu_section_iterator_range dwo_type_unit_sections() {
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parseDWOTypeUnits();
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return tu_section_iterator_range(DWOTUs.begin(), DWOTUs.end());
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}
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/// Get the number of compile units in this context.
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unsigned getNumCompileUnits() {
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parseCompileUnits();
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return CUs.size();
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}
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/// Get the number of compile units in this context.
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unsigned getNumTypeUnits() {
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parseTypeUnits();
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return TUs.size();
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}
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/// Get the number of compile units in the DWO context.
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unsigned getNumDWOCompileUnits() {
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parseDWOCompileUnits();
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return DWOCUs.size();
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}
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/// Get the number of compile units in the DWO context.
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unsigned getNumDWOTypeUnits() {
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parseDWOTypeUnits();
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return DWOTUs.size();
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}
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/// Get the compile unit at the specified index for this compile unit.
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DWARFCompileUnit *getCompileUnitAtIndex(unsigned index) {
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parseCompileUnits();
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return CUs[index].get();
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}
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/// Get the compile unit at the specified index for the DWO compile units.
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DWARFCompileUnit *getDWOCompileUnitAtIndex(unsigned index) {
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parseDWOCompileUnits();
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return DWOCUs[index].get();
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}
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/// Get a pointer to the parsed DebugAbbrev object.
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const DWARFDebugAbbrev *getDebugAbbrev();
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/// Get a pointer to the parsed DebugLoc object.
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const DWARFDebugLoc *getDebugLoc();
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/// Get a pointer to the parsed dwo abbreviations object.
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const DWARFDebugAbbrev *getDebugAbbrevDWO();
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/// Get a pointer to the parsed DebugLoc object.
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const DWARFDebugLocDWO *getDebugLocDWO();
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/// Get a pointer to the parsed DebugAranges object.
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const DWARFDebugAranges *getDebugAranges();
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/// Get a pointer to the parsed frame information object.
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const DWARFDebugFrame *getDebugFrame();
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/// Get a pointer to a parsed line table corresponding to a compile unit.
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const DWARFDebugLine::LineTable *getLineTableForUnit(DWARFUnit *cu);
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DILineInfo getLineInfoForAddress(uint64_t Address,
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DILineInfoSpecifier Specifier = DILineInfoSpecifier()) override;
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DILineInfoTable getLineInfoForAddressRange(uint64_t Address, uint64_t Size,
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DILineInfoSpecifier Specifier = DILineInfoSpecifier()) override;
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DIInliningInfo getInliningInfoForAddress(uint64_t Address,
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DILineInfoSpecifier Specifier = DILineInfoSpecifier()) override;
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virtual bool isLittleEndian() const = 0;
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virtual uint8_t getAddressSize() const = 0;
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virtual const DWARFSection &getInfoSection() = 0;
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typedef MapVector<object::SectionRef, DWARFSection,
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std::map<object::SectionRef, unsigned>> TypeSectionMap;
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virtual const TypeSectionMap &getTypesSections() = 0;
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virtual StringRef getAbbrevSection() = 0;
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virtual const DWARFSection &getLocSection() = 0;
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virtual StringRef getARangeSection() = 0;
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virtual StringRef getDebugFrameSection() = 0;
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virtual const DWARFSection &getLineSection() = 0;
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virtual StringRef getStringSection() = 0;
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virtual StringRef getRangeSection() = 0;
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virtual StringRef getPubNamesSection() = 0;
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virtual StringRef getPubTypesSection() = 0;
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virtual StringRef getGnuPubNamesSection() = 0;
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virtual StringRef getGnuPubTypesSection() = 0;
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// Sections for DWARF5 split dwarf proposal.
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virtual const DWARFSection &getInfoDWOSection() = 0;
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virtual const TypeSectionMap &getTypesDWOSections() = 0;
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virtual StringRef getAbbrevDWOSection() = 0;
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virtual const DWARFSection &getLineDWOSection() = 0;
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virtual const DWARFSection &getLocDWOSection() = 0;
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virtual StringRef getStringDWOSection() = 0;
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virtual StringRef getStringOffsetDWOSection() = 0;
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virtual StringRef getRangeDWOSection() = 0;
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virtual StringRef getAddrSection() = 0;
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virtual StringRef getAppleNamesSection() = 0;
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virtual StringRef getAppleTypesSection() = 0;
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virtual StringRef getAppleNamespacesSection() = 0;
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virtual StringRef getAppleObjCSection() = 0;
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static bool isSupportedVersion(unsigned version) {
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return version == 2 || version == 3 || version == 4;
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}
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private:
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/// Return the compile unit that includes an offset (relative to .debug_info).
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DWARFCompileUnit *getCompileUnitForOffset(uint32_t Offset);
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/// Return the compile unit which contains instruction with provided
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/// address.
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DWARFCompileUnit *getCompileUnitForAddress(uint64_t Address);
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};
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/// DWARFContextInMemory is the simplest possible implementation of a
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/// DWARFContext. It assumes all content is available in memory and stores
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/// pointers to it.
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class DWARFContextInMemory : public DWARFContext {
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virtual void anchor();
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bool IsLittleEndian;
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uint8_t AddressSize;
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DWARFSection InfoSection;
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TypeSectionMap TypesSections;
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StringRef AbbrevSection;
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DWARFSection LocSection;
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StringRef ARangeSection;
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StringRef DebugFrameSection;
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DWARFSection LineSection;
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StringRef StringSection;
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StringRef RangeSection;
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StringRef PubNamesSection;
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StringRef PubTypesSection;
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StringRef GnuPubNamesSection;
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StringRef GnuPubTypesSection;
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// Sections for DWARF5 split dwarf proposal.
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DWARFSection InfoDWOSection;
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TypeSectionMap TypesDWOSections;
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StringRef AbbrevDWOSection;
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DWARFSection LineDWOSection;
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DWARFSection LocDWOSection;
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StringRef StringDWOSection;
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StringRef StringOffsetDWOSection;
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StringRef RangeDWOSection;
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StringRef AddrSection;
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StringRef AppleNamesSection;
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StringRef AppleTypesSection;
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StringRef AppleNamespacesSection;
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StringRef AppleObjCSection;
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SmallVector<SmallString<32>, 4> UncompressedSections;
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public:
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DWARFContextInMemory(const object::ObjectFile &Obj);
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bool isLittleEndian() const override { return IsLittleEndian; }
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uint8_t getAddressSize() const override { return AddressSize; }
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const DWARFSection &getInfoSection() override { return InfoSection; }
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const TypeSectionMap &getTypesSections() override { return TypesSections; }
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StringRef getAbbrevSection() override { return AbbrevSection; }
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const DWARFSection &getLocSection() override { return LocSection; }
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StringRef getARangeSection() override { return ARangeSection; }
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StringRef getDebugFrameSection() override { return DebugFrameSection; }
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const DWARFSection &getLineSection() override { return LineSection; }
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StringRef getStringSection() override { return StringSection; }
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StringRef getRangeSection() override { return RangeSection; }
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StringRef getPubNamesSection() override { return PubNamesSection; }
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StringRef getPubTypesSection() override { return PubTypesSection; }
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StringRef getGnuPubNamesSection() override { return GnuPubNamesSection; }
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StringRef getGnuPubTypesSection() override { return GnuPubTypesSection; }
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StringRef getAppleNamesSection() override { return AppleNamesSection; }
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StringRef getAppleTypesSection() override { return AppleTypesSection; }
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StringRef getAppleNamespacesSection() override { return AppleNamespacesSection; }
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StringRef getAppleObjCSection() override { return AppleObjCSection; }
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// Sections for DWARF5 split dwarf proposal.
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const DWARFSection &getInfoDWOSection() override { return InfoDWOSection; }
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const TypeSectionMap &getTypesDWOSections() override {
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return TypesDWOSections;
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}
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StringRef getAbbrevDWOSection() override { return AbbrevDWOSection; }
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const DWARFSection &getLineDWOSection() override { return LineDWOSection; }
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const DWARFSection &getLocDWOSection() override { return LocDWOSection; }
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StringRef getStringDWOSection() override { return StringDWOSection; }
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StringRef getStringOffsetDWOSection() override {
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return StringOffsetDWOSection;
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}
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StringRef getRangeDWOSection() override { return RangeDWOSection; }
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StringRef getAddrSection() override {
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return AddrSection;
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}
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};
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}
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#endif
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