mirror of
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It allows access to subtarget features, collected in llvm-objdump.cpp, from findPltEntries, which will be used in https://github.com/llvm/llvm-project/pull/130764.
3754 lines
137 KiB
C++
3754 lines
137 KiB
C++
//===-- llvm-objdump.cpp - Object file dumping utility for llvm -----------===//
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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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//
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// This program is a utility that works like binutils "objdump", that is, it
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// dumps out a plethora of information about an object file depending on the
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// flags.
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//
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// The flags and output of this program should be near identical to those of
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// binutils objdump.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm-objdump.h"
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#include "COFFDump.h"
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#include "ELFDump.h"
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#include "MachODump.h"
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#include "ObjdumpOptID.h"
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#include "OffloadDump.h"
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#include "SourcePrinter.h"
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#include "WasmDump.h"
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#include "XCOFFDump.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/SetOperations.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/BinaryFormat/Wasm.h"
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#include "llvm/DebugInfo/BTF/BTFParser.h"
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#include "llvm/DebugInfo/DWARF/DWARFContext.h"
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#include "llvm/DebugInfo/Symbolize/Symbolize.h"
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#include "llvm/Debuginfod/BuildIDFetcher.h"
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#include "llvm/Debuginfod/Debuginfod.h"
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#include "llvm/Debuginfod/HTTPClient.h"
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#include "llvm/Demangle/Demangle.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCDisassembler/MCRelocationInfo.h"
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#include "llvm/MC/MCInst.h"
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#include "llvm/MC/MCInstPrinter.h"
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#include "llvm/MC/MCInstrAnalysis.h"
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#include "llvm/MC/MCInstrInfo.h"
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#include "llvm/MC/MCObjectFileInfo.h"
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#include "llvm/MC/MCRegisterInfo.h"
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#include "llvm/MC/MCTargetOptions.h"
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#include "llvm/MC/TargetRegistry.h"
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#include "llvm/Object/BuildID.h"
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#include "llvm/Object/COFF.h"
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#include "llvm/Object/COFFImportFile.h"
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#include "llvm/Object/ELFObjectFile.h"
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#include "llvm/Object/ELFTypes.h"
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#include "llvm/Object/FaultMapParser.h"
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#include "llvm/Object/MachO.h"
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#include "llvm/Object/MachOUniversal.h"
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#include "llvm/Object/OffloadBinary.h"
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#include "llvm/Object/Wasm.h"
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#include "llvm/Option/Arg.h"
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#include "llvm/Option/ArgList.h"
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#include "llvm/Option/Option.h"
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#include "llvm/Support/Casting.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/Errc.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/FormatVariadic.h"
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#include "llvm/Support/GraphWriter.h"
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#include "llvm/Support/LLVMDriver.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/SourceMgr.h"
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#include "llvm/Support/StringSaver.h"
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#include "llvm/Support/TargetSelect.h"
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#include "llvm/Support/WithColor.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/TargetParser/Host.h"
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#include "llvm/TargetParser/Triple.h"
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#include <algorithm>
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#include <cctype>
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#include <cstring>
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#include <optional>
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#include <set>
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#include <system_error>
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#include <unordered_map>
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#include <utility>
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using namespace llvm;
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using namespace llvm::object;
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using namespace llvm::objdump;
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using namespace llvm::opt;
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namespace {
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class CommonOptTable : public opt::GenericOptTable {
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public:
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CommonOptTable(const StringTable &StrTable,
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ArrayRef<StringTable::Offset> PrefixesTable,
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ArrayRef<Info> OptionInfos, const char *Usage,
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const char *Description)
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: opt::GenericOptTable(StrTable, PrefixesTable, OptionInfos),
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Usage(Usage), Description(Description) {
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setGroupedShortOptions(true);
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}
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void printHelp(StringRef Argv0, bool ShowHidden = false) const {
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Argv0 = sys::path::filename(Argv0);
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opt::GenericOptTable::printHelp(outs(), (Argv0 + Usage).str().c_str(),
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Description, ShowHidden, ShowHidden);
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// TODO Replace this with OptTable API once it adds extrahelp support.
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outs() << "\nPass @FILE as argument to read options from FILE.\n";
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}
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private:
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const char *Usage;
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const char *Description;
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};
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// ObjdumpOptID is in ObjdumpOptID.h
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namespace objdump_opt {
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#define OPTTABLE_STR_TABLE_CODE
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#include "ObjdumpOpts.inc"
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#undef OPTTABLE_STR_TABLE_CODE
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#define OPTTABLE_PREFIXES_TABLE_CODE
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#include "ObjdumpOpts.inc"
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#undef OPTTABLE_PREFIXES_TABLE_CODE
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static constexpr opt::OptTable::Info ObjdumpInfoTable[] = {
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#define OPTION(...) \
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LLVM_CONSTRUCT_OPT_INFO_WITH_ID_PREFIX(OBJDUMP_, __VA_ARGS__),
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#include "ObjdumpOpts.inc"
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#undef OPTION
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};
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} // namespace objdump_opt
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class ObjdumpOptTable : public CommonOptTable {
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public:
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ObjdumpOptTable()
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: CommonOptTable(
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objdump_opt::OptionStrTable, objdump_opt::OptionPrefixesTable,
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objdump_opt::ObjdumpInfoTable, " [options] <input object files>",
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"llvm object file dumper") {}
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};
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enum OtoolOptID {
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OTOOL_INVALID = 0, // This is not an option ID.
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#define OPTION(...) LLVM_MAKE_OPT_ID_WITH_ID_PREFIX(OTOOL_, __VA_ARGS__),
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#include "OtoolOpts.inc"
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#undef OPTION
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};
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namespace otool {
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#define OPTTABLE_STR_TABLE_CODE
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#include "OtoolOpts.inc"
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#undef OPTTABLE_STR_TABLE_CODE
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#define OPTTABLE_PREFIXES_TABLE_CODE
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#include "OtoolOpts.inc"
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#undef OPTTABLE_PREFIXES_TABLE_CODE
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static constexpr opt::OptTable::Info OtoolInfoTable[] = {
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#define OPTION(...) LLVM_CONSTRUCT_OPT_INFO_WITH_ID_PREFIX(OTOOL_, __VA_ARGS__),
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#include "OtoolOpts.inc"
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#undef OPTION
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};
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} // namespace otool
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class OtoolOptTable : public CommonOptTable {
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public:
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OtoolOptTable()
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: CommonOptTable(otool::OptionStrTable, otool::OptionPrefixesTable,
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otool::OtoolInfoTable, " [option...] [file...]",
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"Mach-O object file displaying tool") {}
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};
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struct BBAddrMapLabel {
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std::string BlockLabel;
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std::string PGOAnalysis;
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};
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// This class represents the BBAddrMap and PGOMap associated with a single
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// function.
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class BBAddrMapFunctionEntry {
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public:
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BBAddrMapFunctionEntry(BBAddrMap AddrMap, PGOAnalysisMap PGOMap)
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: AddrMap(std::move(AddrMap)), PGOMap(std::move(PGOMap)) {}
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const BBAddrMap &getAddrMap() const { return AddrMap; }
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// Returns the PGO string associated with the entry of index `PGOBBEntryIndex`
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// in `PGOMap`. If PrettyPGOAnalysis is true, prints BFI as relative frequency
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// and BPI as percentage. Otherwise raw values are displayed.
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std::string constructPGOLabelString(size_t PGOBBEntryIndex,
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bool PrettyPGOAnalysis) const {
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if (!PGOMap.FeatEnable.hasPGOAnalysis())
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return "";
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std::string PGOString;
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raw_string_ostream PGOSS(PGOString);
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PGOSS << " (";
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if (PGOMap.FeatEnable.FuncEntryCount && PGOBBEntryIndex == 0) {
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PGOSS << "Entry count: " << Twine(PGOMap.FuncEntryCount);
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if (PGOMap.FeatEnable.hasPGOAnalysisBBData()) {
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PGOSS << ", ";
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}
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}
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if (PGOMap.FeatEnable.hasPGOAnalysisBBData()) {
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assert(PGOBBEntryIndex < PGOMap.BBEntries.size() &&
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"Expected PGOAnalysisMap and BBAddrMap to have the same entries");
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const PGOAnalysisMap::PGOBBEntry &PGOBBEntry =
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PGOMap.BBEntries[PGOBBEntryIndex];
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if (PGOMap.FeatEnable.BBFreq) {
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PGOSS << "Frequency: ";
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if (PrettyPGOAnalysis)
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printRelativeBlockFreq(PGOSS, PGOMap.BBEntries.front().BlockFreq,
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PGOBBEntry.BlockFreq);
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else
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PGOSS << Twine(PGOBBEntry.BlockFreq.getFrequency());
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if (PGOMap.FeatEnable.BrProb && PGOBBEntry.Successors.size() > 0) {
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PGOSS << ", ";
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}
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}
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if (PGOMap.FeatEnable.BrProb && PGOBBEntry.Successors.size() > 0) {
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PGOSS << "Successors: ";
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interleaveComma(
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PGOBBEntry.Successors, PGOSS,
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[&](const PGOAnalysisMap::PGOBBEntry::SuccessorEntry &SE) {
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PGOSS << "BB" << SE.ID << ":";
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if (PrettyPGOAnalysis)
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PGOSS << "[" << SE.Prob << "]";
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else
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PGOSS.write_hex(SE.Prob.getNumerator());
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});
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}
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}
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PGOSS << ")";
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return PGOString;
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}
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private:
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const BBAddrMap AddrMap;
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const PGOAnalysisMap PGOMap;
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};
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// This class represents the BBAddrMap and PGOMap of potentially multiple
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// functions in a section.
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class BBAddrMapInfo {
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public:
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void clear() {
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FunctionAddrToMap.clear();
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RangeBaseAddrToFunctionAddr.clear();
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}
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bool empty() const { return FunctionAddrToMap.empty(); }
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void AddFunctionEntry(BBAddrMap AddrMap, PGOAnalysisMap PGOMap) {
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uint64_t FunctionAddr = AddrMap.getFunctionAddress();
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for (size_t I = 1; I < AddrMap.BBRanges.size(); ++I)
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RangeBaseAddrToFunctionAddr.emplace(AddrMap.BBRanges[I].BaseAddress,
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FunctionAddr);
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[[maybe_unused]] auto R = FunctionAddrToMap.try_emplace(
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FunctionAddr, std::move(AddrMap), std::move(PGOMap));
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assert(R.second && "duplicate function address");
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}
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// Returns the BBAddrMap entry for the function associated with `BaseAddress`.
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// `BaseAddress` could be the function address or the address of a range
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// associated with that function. Returns `nullptr` if `BaseAddress` is not
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// mapped to any entry.
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const BBAddrMapFunctionEntry *getEntryForAddress(uint64_t BaseAddress) const {
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uint64_t FunctionAddr = BaseAddress;
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auto S = RangeBaseAddrToFunctionAddr.find(BaseAddress);
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if (S != RangeBaseAddrToFunctionAddr.end())
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FunctionAddr = S->second;
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auto R = FunctionAddrToMap.find(FunctionAddr);
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if (R == FunctionAddrToMap.end())
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return nullptr;
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return &R->second;
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}
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private:
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std::unordered_map<uint64_t, BBAddrMapFunctionEntry> FunctionAddrToMap;
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std::unordered_map<uint64_t, uint64_t> RangeBaseAddrToFunctionAddr;
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};
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} // namespace
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#define DEBUG_TYPE "objdump"
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enum class ColorOutput {
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Auto,
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Enable,
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Disable,
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Invalid,
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};
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static uint64_t AdjustVMA;
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static bool AllHeaders;
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static std::string ArchName;
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bool objdump::ArchiveHeaders;
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bool objdump::Demangle;
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bool objdump::Disassemble;
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bool objdump::DisassembleAll;
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std::vector<std::string> objdump::DisassemblerOptions;
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bool objdump::SymbolDescription;
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bool objdump::TracebackTable;
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static std::vector<std::string> DisassembleSymbols;
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static bool DisassembleZeroes;
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static ColorOutput DisassemblyColor;
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DIDumpType objdump::DwarfDumpType;
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static bool DynamicRelocations;
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static bool FaultMapSection;
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static bool FileHeaders;
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bool objdump::SectionContents;
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static std::vector<std::string> InputFilenames;
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bool objdump::PrintLines;
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static bool MachOOpt;
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std::string objdump::MCPU;
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std::vector<std::string> objdump::MAttrs;
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bool objdump::ShowRawInsn;
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bool objdump::LeadingAddr;
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static bool Offloading;
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static bool RawClangAST;
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bool objdump::Relocations;
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bool objdump::PrintImmHex;
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bool objdump::PrivateHeaders;
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std::vector<std::string> objdump::FilterSections;
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bool objdump::SectionHeaders;
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static bool ShowAllSymbols;
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static bool ShowLMA;
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bool objdump::PrintSource;
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static uint64_t StartAddress;
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static bool HasStartAddressFlag;
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static uint64_t StopAddress = UINT64_MAX;
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static bool HasStopAddressFlag;
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bool objdump::SymbolTable;
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static bool SymbolizeOperands;
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static bool PrettyPGOAnalysisMap;
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static bool DynamicSymbolTable;
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std::string objdump::TripleName;
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bool objdump::UnwindInfo;
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static bool Wide;
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std::string objdump::Prefix;
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uint32_t objdump::PrefixStrip;
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DebugVarsFormat objdump::DbgVariables = DVDisabled;
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int objdump::DbgIndent = 52;
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static StringSet<> DisasmSymbolSet;
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StringSet<> objdump::FoundSectionSet;
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static StringRef ToolName;
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std::unique_ptr<BuildIDFetcher> BIDFetcher;
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Dumper::Dumper(const object::ObjectFile &O) : O(O), OS(outs()) {
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WarningHandler = [this](const Twine &Msg) {
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if (Warnings.insert(Msg.str()).second)
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reportWarning(Msg, this->O.getFileName());
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return Error::success();
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};
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}
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void Dumper::reportUniqueWarning(Error Err) {
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reportUniqueWarning(toString(std::move(Err)));
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}
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void Dumper::reportUniqueWarning(const Twine &Msg) {
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cantFail(WarningHandler(Msg));
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}
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static Expected<std::unique_ptr<Dumper>> createDumper(const ObjectFile &Obj) {
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if (const auto *O = dyn_cast<COFFObjectFile>(&Obj))
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return createCOFFDumper(*O);
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if (const auto *O = dyn_cast<ELFObjectFileBase>(&Obj))
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return createELFDumper(*O);
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if (const auto *O = dyn_cast<MachOObjectFile>(&Obj))
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return createMachODumper(*O);
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if (const auto *O = dyn_cast<WasmObjectFile>(&Obj))
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return createWasmDumper(*O);
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if (const auto *O = dyn_cast<XCOFFObjectFile>(&Obj))
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return createXCOFFDumper(*O);
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return createStringError(errc::invalid_argument,
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"unsupported object file format");
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}
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namespace {
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struct FilterResult {
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// True if the section should not be skipped.
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bool Keep;
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// True if the index counter should be incremented, even if the section should
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// be skipped. For example, sections may be skipped if they are not included
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// in the --section flag, but we still want those to count toward the section
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// count.
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bool IncrementIndex;
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};
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} // namespace
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static FilterResult checkSectionFilter(object::SectionRef S) {
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if (FilterSections.empty())
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return {/*Keep=*/true, /*IncrementIndex=*/true};
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Expected<StringRef> SecNameOrErr = S.getName();
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if (!SecNameOrErr) {
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consumeError(SecNameOrErr.takeError());
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return {/*Keep=*/false, /*IncrementIndex=*/false};
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}
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StringRef SecName = *SecNameOrErr;
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// StringSet does not allow empty key so avoid adding sections with
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// no name (such as the section with index 0) here.
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if (!SecName.empty())
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FoundSectionSet.insert(SecName);
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// Only show the section if it's in the FilterSections list, but always
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// increment so the indexing is stable.
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return {/*Keep=*/is_contained(FilterSections, SecName),
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/*IncrementIndex=*/true};
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}
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SectionFilter objdump::ToolSectionFilter(object::ObjectFile const &O,
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uint64_t *Idx) {
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// Start at UINT64_MAX so that the first index returned after an increment is
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// zero (after the unsigned wrap).
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if (Idx)
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*Idx = UINT64_MAX;
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return SectionFilter(
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[Idx](object::SectionRef S) {
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FilterResult Result = checkSectionFilter(S);
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if (Idx != nullptr && Result.IncrementIndex)
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*Idx += 1;
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return Result.Keep;
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},
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O);
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}
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std::string objdump::getFileNameForError(const object::Archive::Child &C,
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unsigned Index) {
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Expected<StringRef> NameOrErr = C.getName();
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if (NameOrErr)
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return std::string(NameOrErr.get());
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// If we have an error getting the name then we print the index of the archive
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// member. Since we are already in an error state, we just ignore this error.
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consumeError(NameOrErr.takeError());
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return "<file index: " + std::to_string(Index) + ">";
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}
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void objdump::reportWarning(const Twine &Message, StringRef File) {
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// Output order between errs() and outs() matters especially for archive
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// files where the output is per member object.
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outs().flush();
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WithColor::warning(errs(), ToolName)
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<< "'" << File << "': " << Message << "\n";
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}
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[[noreturn]] void objdump::reportError(StringRef File, const Twine &Message) {
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outs().flush();
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WithColor::error(errs(), ToolName) << "'" << File << "': " << Message << "\n";
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exit(1);
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}
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[[noreturn]] void objdump::reportError(Error E, StringRef FileName,
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StringRef ArchiveName,
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StringRef ArchitectureName) {
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assert(E);
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outs().flush();
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WithColor::error(errs(), ToolName);
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if (ArchiveName != "")
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errs() << ArchiveName << "(" << FileName << ")";
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else
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errs() << "'" << FileName << "'";
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if (!ArchitectureName.empty())
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errs() << " (for architecture " << ArchitectureName << ")";
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errs() << ": ";
|
|
logAllUnhandledErrors(std::move(E), errs());
|
|
exit(1);
|
|
}
|
|
|
|
static void reportCmdLineWarning(const Twine &Message) {
|
|
WithColor::warning(errs(), ToolName) << Message << "\n";
|
|
}
|
|
|
|
[[noreturn]] static void reportCmdLineError(const Twine &Message) {
|
|
WithColor::error(errs(), ToolName) << Message << "\n";
|
|
exit(1);
|
|
}
|
|
|
|
static void warnOnNoMatchForSections() {
|
|
SetVector<StringRef> MissingSections;
|
|
for (StringRef S : FilterSections) {
|
|
if (FoundSectionSet.count(S))
|
|
return;
|
|
// User may specify a unnamed section. Don't warn for it.
|
|
if (!S.empty())
|
|
MissingSections.insert(S);
|
|
}
|
|
|
|
// Warn only if no section in FilterSections is matched.
|
|
for (StringRef S : MissingSections)
|
|
reportCmdLineWarning("section '" + S +
|
|
"' mentioned in a -j/--section option, but not "
|
|
"found in any input file");
|
|
}
|
|
|
|
static const Target *getTarget(const ObjectFile *Obj) {
|
|
// Figure out the target triple.
|
|
Triple TheTriple("unknown-unknown-unknown");
|
|
if (TripleName.empty()) {
|
|
TheTriple = Obj->makeTriple();
|
|
} else {
|
|
TheTriple.setTriple(Triple::normalize(TripleName));
|
|
auto Arch = Obj->getArch();
|
|
if (Arch == Triple::arm || Arch == Triple::armeb)
|
|
Obj->setARMSubArch(TheTriple);
|
|
}
|
|
|
|
// Get the target specific parser.
|
|
std::string Error;
|
|
const Target *TheTarget = TargetRegistry::lookupTarget(ArchName, TheTriple,
|
|
Error);
|
|
if (!TheTarget)
|
|
reportError(Obj->getFileName(), "can't find target: " + Error);
|
|
|
|
// Update the triple name and return the found target.
|
|
TripleName = TheTriple.getTriple();
|
|
return TheTarget;
|
|
}
|
|
|
|
bool objdump::isRelocAddressLess(RelocationRef A, RelocationRef B) {
|
|
return A.getOffset() < B.getOffset();
|
|
}
|
|
|
|
static Error getRelocationValueString(const RelocationRef &Rel,
|
|
bool SymbolDescription,
|
|
SmallVectorImpl<char> &Result) {
|
|
const ObjectFile *Obj = Rel.getObject();
|
|
if (auto *ELF = dyn_cast<ELFObjectFileBase>(Obj))
|
|
return getELFRelocationValueString(ELF, Rel, Result);
|
|
if (auto *COFF = dyn_cast<COFFObjectFile>(Obj))
|
|
return getCOFFRelocationValueString(COFF, Rel, Result);
|
|
if (auto *Wasm = dyn_cast<WasmObjectFile>(Obj))
|
|
return getWasmRelocationValueString(Wasm, Rel, Result);
|
|
if (auto *MachO = dyn_cast<MachOObjectFile>(Obj))
|
|
return getMachORelocationValueString(MachO, Rel, Result);
|
|
if (auto *XCOFF = dyn_cast<XCOFFObjectFile>(Obj))
|
|
return getXCOFFRelocationValueString(*XCOFF, Rel, SymbolDescription,
|
|
Result);
|
|
llvm_unreachable("unknown object file format");
|
|
}
|
|
|
|
/// Indicates whether this relocation should hidden when listing
|
|
/// relocations, usually because it is the trailing part of a multipart
|
|
/// relocation that will be printed as part of the leading relocation.
|
|
static bool getHidden(RelocationRef RelRef) {
|
|
auto *MachO = dyn_cast<MachOObjectFile>(RelRef.getObject());
|
|
if (!MachO)
|
|
return false;
|
|
|
|
unsigned Arch = MachO->getArch();
|
|
DataRefImpl Rel = RelRef.getRawDataRefImpl();
|
|
uint64_t Type = MachO->getRelocationType(Rel);
|
|
|
|
// On arches that use the generic relocations, GENERIC_RELOC_PAIR
|
|
// is always hidden.
|
|
if (Arch == Triple::x86 || Arch == Triple::arm || Arch == Triple::ppc)
|
|
return Type == MachO::GENERIC_RELOC_PAIR;
|
|
|
|
if (Arch == Triple::x86_64) {
|
|
// On x86_64, X86_64_RELOC_UNSIGNED is hidden only when it follows
|
|
// an X86_64_RELOC_SUBTRACTOR.
|
|
if (Type == MachO::X86_64_RELOC_UNSIGNED && Rel.d.a > 0) {
|
|
DataRefImpl RelPrev = Rel;
|
|
RelPrev.d.a--;
|
|
uint64_t PrevType = MachO->getRelocationType(RelPrev);
|
|
if (PrevType == MachO::X86_64_RELOC_SUBTRACTOR)
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/// Get the column at which we want to start printing the instruction
|
|
/// disassembly, taking into account anything which appears to the left of it.
|
|
unsigned objdump::getInstStartColumn(const MCSubtargetInfo &STI) {
|
|
return !ShowRawInsn ? 16 : STI.getTargetTriple().isX86() ? 40 : 24;
|
|
}
|
|
|
|
static void AlignToInstStartColumn(size_t Start, const MCSubtargetInfo &STI,
|
|
raw_ostream &OS) {
|
|
// The output of printInst starts with a tab. Print some spaces so that
|
|
// the tab has 1 column and advances to the target tab stop.
|
|
unsigned TabStop = getInstStartColumn(STI);
|
|
unsigned Column = OS.tell() - Start;
|
|
OS.indent(Column < TabStop - 1 ? TabStop - 1 - Column : 7 - Column % 8);
|
|
}
|
|
|
|
void objdump::printRawData(ArrayRef<uint8_t> Bytes, uint64_t Address,
|
|
formatted_raw_ostream &OS,
|
|
MCSubtargetInfo const &STI) {
|
|
size_t Start = OS.tell();
|
|
if (LeadingAddr)
|
|
OS << format("%8" PRIx64 ":", Address);
|
|
if (ShowRawInsn) {
|
|
OS << ' ';
|
|
dumpBytes(Bytes, OS);
|
|
}
|
|
AlignToInstStartColumn(Start, STI, OS);
|
|
}
|
|
|
|
namespace {
|
|
|
|
static bool isAArch64Elf(const ObjectFile &Obj) {
|
|
const auto *Elf = dyn_cast<ELFObjectFileBase>(&Obj);
|
|
return Elf && Elf->getEMachine() == ELF::EM_AARCH64;
|
|
}
|
|
|
|
static bool isArmElf(const ObjectFile &Obj) {
|
|
const auto *Elf = dyn_cast<ELFObjectFileBase>(&Obj);
|
|
return Elf && Elf->getEMachine() == ELF::EM_ARM;
|
|
}
|
|
|
|
static bool isCSKYElf(const ObjectFile &Obj) {
|
|
const auto *Elf = dyn_cast<ELFObjectFileBase>(&Obj);
|
|
return Elf && Elf->getEMachine() == ELF::EM_CSKY;
|
|
}
|
|
|
|
static bool hasMappingSymbols(const ObjectFile &Obj) {
|
|
return isArmElf(Obj) || isAArch64Elf(Obj) || isCSKYElf(Obj) ;
|
|
}
|
|
|
|
static void printRelocation(formatted_raw_ostream &OS, StringRef FileName,
|
|
const RelocationRef &Rel, uint64_t Address,
|
|
bool Is64Bits) {
|
|
StringRef Fmt = Is64Bits ? "%016" PRIx64 ": " : "%08" PRIx64 ": ";
|
|
SmallString<16> Name;
|
|
SmallString<32> Val;
|
|
Rel.getTypeName(Name);
|
|
if (Error E = getRelocationValueString(Rel, SymbolDescription, Val))
|
|
reportError(std::move(E), FileName);
|
|
OS << (Is64Bits || !LeadingAddr ? "\t\t" : "\t\t\t");
|
|
if (LeadingAddr)
|
|
OS << format(Fmt.data(), Address);
|
|
OS << Name << "\t" << Val;
|
|
}
|
|
|
|
static void printBTFRelocation(formatted_raw_ostream &FOS, llvm::BTFParser &BTF,
|
|
object::SectionedAddress Address,
|
|
LiveVariablePrinter &LVP) {
|
|
const llvm::BTF::BPFFieldReloc *Reloc = BTF.findFieldReloc(Address);
|
|
if (!Reloc)
|
|
return;
|
|
|
|
SmallString<64> Val;
|
|
BTF.symbolize(Reloc, Val);
|
|
FOS << "\t\t";
|
|
if (LeadingAddr)
|
|
FOS << format("%016" PRIx64 ": ", Address.Address + AdjustVMA);
|
|
FOS << "CO-RE " << Val;
|
|
LVP.printAfterOtherLine(FOS, true);
|
|
}
|
|
|
|
class PrettyPrinter {
|
|
public:
|
|
virtual ~PrettyPrinter() = default;
|
|
virtual void
|
|
printInst(MCInstPrinter &IP, const MCInst *MI, ArrayRef<uint8_t> Bytes,
|
|
object::SectionedAddress Address, formatted_raw_ostream &OS,
|
|
StringRef Annot, MCSubtargetInfo const &STI, SourcePrinter *SP,
|
|
StringRef ObjectFilename, std::vector<RelocationRef> *Rels,
|
|
LiveVariablePrinter &LVP) {
|
|
if (SP && (PrintSource || PrintLines))
|
|
SP->printSourceLine(OS, Address, ObjectFilename, LVP);
|
|
LVP.printBetweenInsts(OS, false);
|
|
|
|
printRawData(Bytes, Address.Address, OS, STI);
|
|
|
|
if (MI) {
|
|
// See MCInstPrinter::printInst. On targets where a PC relative immediate
|
|
// is relative to the next instruction and the length of a MCInst is
|
|
// difficult to measure (x86), this is the address of the next
|
|
// instruction.
|
|
uint64_t Addr =
|
|
Address.Address + (STI.getTargetTriple().isX86() ? Bytes.size() : 0);
|
|
IP.printInst(MI, Addr, "", STI, OS);
|
|
} else
|
|
OS << "\t<unknown>";
|
|
}
|
|
};
|
|
PrettyPrinter PrettyPrinterInst;
|
|
|
|
class HexagonPrettyPrinter : public PrettyPrinter {
|
|
public:
|
|
void printLead(ArrayRef<uint8_t> Bytes, uint64_t Address,
|
|
formatted_raw_ostream &OS) {
|
|
uint32_t opcode =
|
|
(Bytes[3] << 24) | (Bytes[2] << 16) | (Bytes[1] << 8) | Bytes[0];
|
|
if (LeadingAddr)
|
|
OS << format("%8" PRIx64 ":", Address);
|
|
if (ShowRawInsn) {
|
|
OS << "\t";
|
|
dumpBytes(Bytes.slice(0, 4), OS);
|
|
OS << format("\t%08" PRIx32, opcode);
|
|
}
|
|
}
|
|
void printInst(MCInstPrinter &IP, const MCInst *MI, ArrayRef<uint8_t> Bytes,
|
|
object::SectionedAddress Address, formatted_raw_ostream &OS,
|
|
StringRef Annot, MCSubtargetInfo const &STI, SourcePrinter *SP,
|
|
StringRef ObjectFilename, std::vector<RelocationRef> *Rels,
|
|
LiveVariablePrinter &LVP) override {
|
|
if (SP && (PrintSource || PrintLines))
|
|
SP->printSourceLine(OS, Address, ObjectFilename, LVP, "");
|
|
if (!MI) {
|
|
printLead(Bytes, Address.Address, OS);
|
|
OS << " <unknown>";
|
|
return;
|
|
}
|
|
std::string Buffer;
|
|
{
|
|
raw_string_ostream TempStream(Buffer);
|
|
IP.printInst(MI, Address.Address, "", STI, TempStream);
|
|
}
|
|
StringRef Contents(Buffer);
|
|
// Split off bundle attributes
|
|
auto PacketBundle = Contents.rsplit('\n');
|
|
// Split off first instruction from the rest
|
|
auto HeadTail = PacketBundle.first.split('\n');
|
|
auto Preamble = " { ";
|
|
auto Separator = "";
|
|
|
|
// Hexagon's packets require relocations to be inline rather than
|
|
// clustered at the end of the packet.
|
|
std::vector<RelocationRef>::const_iterator RelCur = Rels->begin();
|
|
std::vector<RelocationRef>::const_iterator RelEnd = Rels->end();
|
|
auto PrintReloc = [&]() -> void {
|
|
while ((RelCur != RelEnd) && (RelCur->getOffset() <= Address.Address)) {
|
|
if (RelCur->getOffset() == Address.Address) {
|
|
printRelocation(OS, ObjectFilename, *RelCur, Address.Address, false);
|
|
return;
|
|
}
|
|
++RelCur;
|
|
}
|
|
};
|
|
|
|
while (!HeadTail.first.empty()) {
|
|
OS << Separator;
|
|
Separator = "\n";
|
|
if (SP && (PrintSource || PrintLines))
|
|
SP->printSourceLine(OS, Address, ObjectFilename, LVP, "");
|
|
printLead(Bytes, Address.Address, OS);
|
|
OS << Preamble;
|
|
Preamble = " ";
|
|
StringRef Inst;
|
|
auto Duplex = HeadTail.first.split('\v');
|
|
if (!Duplex.second.empty()) {
|
|
OS << Duplex.first;
|
|
OS << "; ";
|
|
Inst = Duplex.second;
|
|
}
|
|
else
|
|
Inst = HeadTail.first;
|
|
OS << Inst;
|
|
HeadTail = HeadTail.second.split('\n');
|
|
if (HeadTail.first.empty())
|
|
OS << " } " << PacketBundle.second;
|
|
PrintReloc();
|
|
Bytes = Bytes.slice(4);
|
|
Address.Address += 4;
|
|
}
|
|
}
|
|
};
|
|
HexagonPrettyPrinter HexagonPrettyPrinterInst;
|
|
|
|
class AMDGCNPrettyPrinter : public PrettyPrinter {
|
|
public:
|
|
void printInst(MCInstPrinter &IP, const MCInst *MI, ArrayRef<uint8_t> Bytes,
|
|
object::SectionedAddress Address, formatted_raw_ostream &OS,
|
|
StringRef Annot, MCSubtargetInfo const &STI, SourcePrinter *SP,
|
|
StringRef ObjectFilename, std::vector<RelocationRef> *Rels,
|
|
LiveVariablePrinter &LVP) override {
|
|
if (SP && (PrintSource || PrintLines))
|
|
SP->printSourceLine(OS, Address, ObjectFilename, LVP);
|
|
|
|
if (MI) {
|
|
SmallString<40> InstStr;
|
|
raw_svector_ostream IS(InstStr);
|
|
|
|
IP.printInst(MI, Address.Address, "", STI, IS);
|
|
|
|
OS << left_justify(IS.str(), 60);
|
|
} else {
|
|
// an unrecognized encoding - this is probably data so represent it
|
|
// using the .long directive, or .byte directive if fewer than 4 bytes
|
|
// remaining
|
|
if (Bytes.size() >= 4) {
|
|
OS << format(
|
|
"\t.long 0x%08" PRIx32 " ",
|
|
support::endian::read32<llvm::endianness::little>(Bytes.data()));
|
|
OS.indent(42);
|
|
} else {
|
|
OS << format("\t.byte 0x%02" PRIx8, Bytes[0]);
|
|
for (unsigned int i = 1; i < Bytes.size(); i++)
|
|
OS << format(", 0x%02" PRIx8, Bytes[i]);
|
|
OS.indent(55 - (6 * Bytes.size()));
|
|
}
|
|
}
|
|
|
|
OS << format("// %012" PRIX64 ":", Address.Address);
|
|
if (Bytes.size() >= 4) {
|
|
// D should be casted to uint32_t here as it is passed by format to
|
|
// snprintf as vararg.
|
|
for (uint32_t D :
|
|
ArrayRef(reinterpret_cast<const support::little32_t *>(Bytes.data()),
|
|
Bytes.size() / 4))
|
|
OS << format(" %08" PRIX32, D);
|
|
} else {
|
|
for (unsigned char B : Bytes)
|
|
OS << format(" %02" PRIX8, B);
|
|
}
|
|
|
|
if (!Annot.empty())
|
|
OS << " // " << Annot;
|
|
}
|
|
};
|
|
AMDGCNPrettyPrinter AMDGCNPrettyPrinterInst;
|
|
|
|
class BPFPrettyPrinter : public PrettyPrinter {
|
|
public:
|
|
void printInst(MCInstPrinter &IP, const MCInst *MI, ArrayRef<uint8_t> Bytes,
|
|
object::SectionedAddress Address, formatted_raw_ostream &OS,
|
|
StringRef Annot, MCSubtargetInfo const &STI, SourcePrinter *SP,
|
|
StringRef ObjectFilename, std::vector<RelocationRef> *Rels,
|
|
LiveVariablePrinter &LVP) override {
|
|
if (SP && (PrintSource || PrintLines))
|
|
SP->printSourceLine(OS, Address, ObjectFilename, LVP);
|
|
if (LeadingAddr)
|
|
OS << format("%8" PRId64 ":", Address.Address / 8);
|
|
if (ShowRawInsn) {
|
|
OS << "\t";
|
|
dumpBytes(Bytes, OS);
|
|
}
|
|
if (MI)
|
|
IP.printInst(MI, Address.Address, "", STI, OS);
|
|
else
|
|
OS << "\t<unknown>";
|
|
}
|
|
};
|
|
BPFPrettyPrinter BPFPrettyPrinterInst;
|
|
|
|
class ARMPrettyPrinter : public PrettyPrinter {
|
|
public:
|
|
void printInst(MCInstPrinter &IP, const MCInst *MI, ArrayRef<uint8_t> Bytes,
|
|
object::SectionedAddress Address, formatted_raw_ostream &OS,
|
|
StringRef Annot, MCSubtargetInfo const &STI, SourcePrinter *SP,
|
|
StringRef ObjectFilename, std::vector<RelocationRef> *Rels,
|
|
LiveVariablePrinter &LVP) override {
|
|
if (SP && (PrintSource || PrintLines))
|
|
SP->printSourceLine(OS, Address, ObjectFilename, LVP);
|
|
LVP.printBetweenInsts(OS, false);
|
|
|
|
size_t Start = OS.tell();
|
|
if (LeadingAddr)
|
|
OS << format("%8" PRIx64 ":", Address.Address);
|
|
if (ShowRawInsn) {
|
|
size_t Pos = 0, End = Bytes.size();
|
|
if (STI.checkFeatures("+thumb-mode")) {
|
|
for (; Pos + 2 <= End; Pos += 2)
|
|
OS << ' '
|
|
<< format_hex_no_prefix(
|
|
llvm::support::endian::read<uint16_t>(
|
|
Bytes.data() + Pos, InstructionEndianness),
|
|
4);
|
|
} else {
|
|
for (; Pos + 4 <= End; Pos += 4)
|
|
OS << ' '
|
|
<< format_hex_no_prefix(
|
|
llvm::support::endian::read<uint32_t>(
|
|
Bytes.data() + Pos, InstructionEndianness),
|
|
8);
|
|
}
|
|
if (Pos < End) {
|
|
OS << ' ';
|
|
dumpBytes(Bytes.slice(Pos), OS);
|
|
}
|
|
}
|
|
|
|
AlignToInstStartColumn(Start, STI, OS);
|
|
|
|
if (MI) {
|
|
IP.printInst(MI, Address.Address, "", STI, OS);
|
|
} else
|
|
OS << "\t<unknown>";
|
|
}
|
|
|
|
void setInstructionEndianness(llvm::endianness Endianness) {
|
|
InstructionEndianness = Endianness;
|
|
}
|
|
|
|
private:
|
|
llvm::endianness InstructionEndianness = llvm::endianness::little;
|
|
};
|
|
ARMPrettyPrinter ARMPrettyPrinterInst;
|
|
|
|
class AArch64PrettyPrinter : public PrettyPrinter {
|
|
public:
|
|
void printInst(MCInstPrinter &IP, const MCInst *MI, ArrayRef<uint8_t> Bytes,
|
|
object::SectionedAddress Address, formatted_raw_ostream &OS,
|
|
StringRef Annot, MCSubtargetInfo const &STI, SourcePrinter *SP,
|
|
StringRef ObjectFilename, std::vector<RelocationRef> *Rels,
|
|
LiveVariablePrinter &LVP) override {
|
|
if (SP && (PrintSource || PrintLines))
|
|
SP->printSourceLine(OS, Address, ObjectFilename, LVP);
|
|
LVP.printBetweenInsts(OS, false);
|
|
|
|
size_t Start = OS.tell();
|
|
if (LeadingAddr)
|
|
OS << format("%8" PRIx64 ":", Address.Address);
|
|
if (ShowRawInsn) {
|
|
size_t Pos = 0, End = Bytes.size();
|
|
for (; Pos + 4 <= End; Pos += 4)
|
|
OS << ' '
|
|
<< format_hex_no_prefix(
|
|
llvm::support::endian::read<uint32_t>(
|
|
Bytes.data() + Pos, llvm::endianness::little),
|
|
8);
|
|
if (Pos < End) {
|
|
OS << ' ';
|
|
dumpBytes(Bytes.slice(Pos), OS);
|
|
}
|
|
}
|
|
|
|
AlignToInstStartColumn(Start, STI, OS);
|
|
|
|
if (MI) {
|
|
IP.printInst(MI, Address.Address, "", STI, OS);
|
|
} else
|
|
OS << "\t<unknown>";
|
|
}
|
|
};
|
|
AArch64PrettyPrinter AArch64PrettyPrinterInst;
|
|
|
|
class RISCVPrettyPrinter : public PrettyPrinter {
|
|
public:
|
|
void printInst(MCInstPrinter &IP, const MCInst *MI, ArrayRef<uint8_t> Bytes,
|
|
object::SectionedAddress Address, formatted_raw_ostream &OS,
|
|
StringRef Annot, MCSubtargetInfo const &STI, SourcePrinter *SP,
|
|
StringRef ObjectFilename, std::vector<RelocationRef> *Rels,
|
|
LiveVariablePrinter &LVP) override {
|
|
if (SP && (PrintSource || PrintLines))
|
|
SP->printSourceLine(OS, Address, ObjectFilename, LVP);
|
|
LVP.printBetweenInsts(OS, false);
|
|
|
|
size_t Start = OS.tell();
|
|
if (LeadingAddr)
|
|
OS << format("%8" PRIx64 ":", Address.Address);
|
|
if (ShowRawInsn) {
|
|
size_t Pos = 0, End = Bytes.size();
|
|
if (End % 4 == 0) {
|
|
// 32-bit and 64-bit instructions.
|
|
for (; Pos + 4 <= End; Pos += 4)
|
|
OS << ' '
|
|
<< format_hex_no_prefix(
|
|
llvm::support::endian::read<uint32_t>(
|
|
Bytes.data() + Pos, llvm::endianness::little),
|
|
8);
|
|
} else if (End % 2 == 0) {
|
|
// 16-bit and 48-bits instructions.
|
|
for (; Pos + 2 <= End; Pos += 2)
|
|
OS << ' '
|
|
<< format_hex_no_prefix(
|
|
llvm::support::endian::read<uint16_t>(
|
|
Bytes.data() + Pos, llvm::endianness::little),
|
|
4);
|
|
}
|
|
if (Pos < End) {
|
|
OS << ' ';
|
|
dumpBytes(Bytes.slice(Pos), OS);
|
|
}
|
|
}
|
|
|
|
AlignToInstStartColumn(Start, STI, OS);
|
|
|
|
if (MI) {
|
|
IP.printInst(MI, Address.Address, "", STI, OS);
|
|
} else
|
|
OS << "\t<unknown>";
|
|
}
|
|
};
|
|
RISCVPrettyPrinter RISCVPrettyPrinterInst;
|
|
|
|
PrettyPrinter &selectPrettyPrinter(Triple const &Triple) {
|
|
switch(Triple.getArch()) {
|
|
default:
|
|
return PrettyPrinterInst;
|
|
case Triple::hexagon:
|
|
return HexagonPrettyPrinterInst;
|
|
case Triple::amdgcn:
|
|
return AMDGCNPrettyPrinterInst;
|
|
case Triple::bpfel:
|
|
case Triple::bpfeb:
|
|
return BPFPrettyPrinterInst;
|
|
case Triple::arm:
|
|
case Triple::armeb:
|
|
case Triple::thumb:
|
|
case Triple::thumbeb:
|
|
return ARMPrettyPrinterInst;
|
|
case Triple::aarch64:
|
|
case Triple::aarch64_be:
|
|
case Triple::aarch64_32:
|
|
return AArch64PrettyPrinterInst;
|
|
case Triple::riscv32:
|
|
case Triple::riscv64:
|
|
return RISCVPrettyPrinterInst;
|
|
}
|
|
}
|
|
|
|
class DisassemblerTarget {
|
|
public:
|
|
const Target *TheTarget;
|
|
std::unique_ptr<const MCSubtargetInfo> SubtargetInfo;
|
|
std::shared_ptr<MCContext> Context;
|
|
std::unique_ptr<MCDisassembler> DisAsm;
|
|
std::shared_ptr<MCInstrAnalysis> InstrAnalysis;
|
|
std::shared_ptr<MCInstPrinter> InstPrinter;
|
|
PrettyPrinter *Printer;
|
|
|
|
DisassemblerTarget(const Target *TheTarget, ObjectFile &Obj,
|
|
StringRef TripleName, StringRef MCPU,
|
|
SubtargetFeatures &Features);
|
|
DisassemblerTarget(DisassemblerTarget &Other, SubtargetFeatures &Features);
|
|
|
|
private:
|
|
MCTargetOptions Options;
|
|
std::shared_ptr<const MCRegisterInfo> RegisterInfo;
|
|
std::shared_ptr<const MCAsmInfo> AsmInfo;
|
|
std::shared_ptr<const MCInstrInfo> InstrInfo;
|
|
std::shared_ptr<MCObjectFileInfo> ObjectFileInfo;
|
|
};
|
|
|
|
DisassemblerTarget::DisassemblerTarget(const Target *TheTarget, ObjectFile &Obj,
|
|
StringRef TripleName, StringRef MCPU,
|
|
SubtargetFeatures &Features)
|
|
: TheTarget(TheTarget),
|
|
Printer(&selectPrettyPrinter(Triple(TripleName))),
|
|
RegisterInfo(TheTarget->createMCRegInfo(TripleName)) {
|
|
if (!RegisterInfo)
|
|
reportError(Obj.getFileName(), "no register info for target " + TripleName);
|
|
|
|
// Set up disassembler.
|
|
AsmInfo.reset(TheTarget->createMCAsmInfo(*RegisterInfo, TripleName, Options));
|
|
if (!AsmInfo)
|
|
reportError(Obj.getFileName(), "no assembly info for target " + TripleName);
|
|
|
|
SubtargetInfo.reset(
|
|
TheTarget->createMCSubtargetInfo(TripleName, MCPU, Features.getString()));
|
|
if (!SubtargetInfo)
|
|
reportError(Obj.getFileName(),
|
|
"no subtarget info for target " + TripleName);
|
|
InstrInfo.reset(TheTarget->createMCInstrInfo());
|
|
if (!InstrInfo)
|
|
reportError(Obj.getFileName(),
|
|
"no instruction info for target " + TripleName);
|
|
Context =
|
|
std::make_shared<MCContext>(Triple(TripleName), AsmInfo.get(),
|
|
RegisterInfo.get(), SubtargetInfo.get());
|
|
|
|
// FIXME: for now initialize MCObjectFileInfo with default values
|
|
ObjectFileInfo.reset(
|
|
TheTarget->createMCObjectFileInfo(*Context, /*PIC=*/false));
|
|
Context->setObjectFileInfo(ObjectFileInfo.get());
|
|
|
|
DisAsm.reset(TheTarget->createMCDisassembler(*SubtargetInfo, *Context));
|
|
if (!DisAsm)
|
|
reportError(Obj.getFileName(), "no disassembler for target " + TripleName);
|
|
|
|
if (auto *ELFObj = dyn_cast<ELFObjectFileBase>(&Obj))
|
|
DisAsm->setABIVersion(ELFObj->getEIdentABIVersion());
|
|
|
|
InstrAnalysis.reset(TheTarget->createMCInstrAnalysis(InstrInfo.get()));
|
|
|
|
int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
|
|
InstPrinter.reset(TheTarget->createMCInstPrinter(Triple(TripleName),
|
|
AsmPrinterVariant, *AsmInfo,
|
|
*InstrInfo, *RegisterInfo));
|
|
if (!InstPrinter)
|
|
reportError(Obj.getFileName(),
|
|
"no instruction printer for target " + TripleName);
|
|
InstPrinter->setPrintImmHex(PrintImmHex);
|
|
InstPrinter->setPrintBranchImmAsAddress(true);
|
|
InstPrinter->setSymbolizeOperands(SymbolizeOperands);
|
|
InstPrinter->setMCInstrAnalysis(InstrAnalysis.get());
|
|
|
|
switch (DisassemblyColor) {
|
|
case ColorOutput::Enable:
|
|
InstPrinter->setUseColor(true);
|
|
break;
|
|
case ColorOutput::Auto:
|
|
InstPrinter->setUseColor(outs().has_colors());
|
|
break;
|
|
case ColorOutput::Disable:
|
|
case ColorOutput::Invalid:
|
|
InstPrinter->setUseColor(false);
|
|
break;
|
|
};
|
|
}
|
|
|
|
DisassemblerTarget::DisassemblerTarget(DisassemblerTarget &Other,
|
|
SubtargetFeatures &Features)
|
|
: TheTarget(Other.TheTarget),
|
|
SubtargetInfo(TheTarget->createMCSubtargetInfo(TripleName, MCPU,
|
|
Features.getString())),
|
|
Context(Other.Context),
|
|
DisAsm(TheTarget->createMCDisassembler(*SubtargetInfo, *Context)),
|
|
InstrAnalysis(Other.InstrAnalysis), InstPrinter(Other.InstPrinter),
|
|
Printer(Other.Printer), RegisterInfo(Other.RegisterInfo),
|
|
AsmInfo(Other.AsmInfo), InstrInfo(Other.InstrInfo),
|
|
ObjectFileInfo(Other.ObjectFileInfo) {}
|
|
} // namespace
|
|
|
|
static uint8_t getElfSymbolType(const ObjectFile &Obj, const SymbolRef &Sym) {
|
|
assert(Obj.isELF());
|
|
if (auto *Elf32LEObj = dyn_cast<ELF32LEObjectFile>(&Obj))
|
|
return unwrapOrError(Elf32LEObj->getSymbol(Sym.getRawDataRefImpl()),
|
|
Obj.getFileName())
|
|
->getType();
|
|
if (auto *Elf64LEObj = dyn_cast<ELF64LEObjectFile>(&Obj))
|
|
return unwrapOrError(Elf64LEObj->getSymbol(Sym.getRawDataRefImpl()),
|
|
Obj.getFileName())
|
|
->getType();
|
|
if (auto *Elf32BEObj = dyn_cast<ELF32BEObjectFile>(&Obj))
|
|
return unwrapOrError(Elf32BEObj->getSymbol(Sym.getRawDataRefImpl()),
|
|
Obj.getFileName())
|
|
->getType();
|
|
if (auto *Elf64BEObj = cast<ELF64BEObjectFile>(&Obj))
|
|
return unwrapOrError(Elf64BEObj->getSymbol(Sym.getRawDataRefImpl()),
|
|
Obj.getFileName())
|
|
->getType();
|
|
llvm_unreachable("Unsupported binary format");
|
|
}
|
|
|
|
template <class ELFT>
|
|
static void
|
|
addDynamicElfSymbols(const ELFObjectFile<ELFT> &Obj,
|
|
std::map<SectionRef, SectionSymbolsTy> &AllSymbols) {
|
|
for (auto Symbol : Obj.getDynamicSymbolIterators()) {
|
|
uint8_t SymbolType = Symbol.getELFType();
|
|
if (SymbolType == ELF::STT_SECTION)
|
|
continue;
|
|
|
|
uint64_t Address = unwrapOrError(Symbol.getAddress(), Obj.getFileName());
|
|
// ELFSymbolRef::getAddress() returns size instead of value for common
|
|
// symbols which is not desirable for disassembly output. Overriding.
|
|
if (SymbolType == ELF::STT_COMMON)
|
|
Address = unwrapOrError(Obj.getSymbol(Symbol.getRawDataRefImpl()),
|
|
Obj.getFileName())
|
|
->st_value;
|
|
|
|
StringRef Name = unwrapOrError(Symbol.getName(), Obj.getFileName());
|
|
if (Name.empty())
|
|
continue;
|
|
|
|
section_iterator SecI =
|
|
unwrapOrError(Symbol.getSection(), Obj.getFileName());
|
|
if (SecI == Obj.section_end())
|
|
continue;
|
|
|
|
AllSymbols[*SecI].emplace_back(Address, Name, SymbolType);
|
|
}
|
|
}
|
|
|
|
static void
|
|
addDynamicElfSymbols(const ELFObjectFileBase &Obj,
|
|
std::map<SectionRef, SectionSymbolsTy> &AllSymbols) {
|
|
if (auto *Elf32LEObj = dyn_cast<ELF32LEObjectFile>(&Obj))
|
|
addDynamicElfSymbols(*Elf32LEObj, AllSymbols);
|
|
else if (auto *Elf64LEObj = dyn_cast<ELF64LEObjectFile>(&Obj))
|
|
addDynamicElfSymbols(*Elf64LEObj, AllSymbols);
|
|
else if (auto *Elf32BEObj = dyn_cast<ELF32BEObjectFile>(&Obj))
|
|
addDynamicElfSymbols(*Elf32BEObj, AllSymbols);
|
|
else if (auto *Elf64BEObj = cast<ELF64BEObjectFile>(&Obj))
|
|
addDynamicElfSymbols(*Elf64BEObj, AllSymbols);
|
|
else
|
|
llvm_unreachable("Unsupported binary format");
|
|
}
|
|
|
|
static std::optional<SectionRef> getWasmCodeSection(const WasmObjectFile &Obj) {
|
|
for (auto SecI : Obj.sections()) {
|
|
const WasmSection &Section = Obj.getWasmSection(SecI);
|
|
if (Section.Type == wasm::WASM_SEC_CODE)
|
|
return SecI;
|
|
}
|
|
return std::nullopt;
|
|
}
|
|
|
|
static void
|
|
addMissingWasmCodeSymbols(const WasmObjectFile &Obj,
|
|
std::map<SectionRef, SectionSymbolsTy> &AllSymbols) {
|
|
std::optional<SectionRef> Section = getWasmCodeSection(Obj);
|
|
if (!Section)
|
|
return;
|
|
SectionSymbolsTy &Symbols = AllSymbols[*Section];
|
|
|
|
std::set<uint64_t> SymbolAddresses;
|
|
for (const auto &Sym : Symbols)
|
|
SymbolAddresses.insert(Sym.Addr);
|
|
|
|
for (const wasm::WasmFunction &Function : Obj.functions()) {
|
|
// This adjustment mirrors the one in WasmObjectFile::getSymbolAddress.
|
|
uint32_t Adjustment = Obj.isRelocatableObject() || Obj.isSharedObject()
|
|
? 0
|
|
: Section->getAddress();
|
|
uint64_t Address = Function.CodeSectionOffset + Adjustment;
|
|
// Only add fallback symbols for functions not already present in the symbol
|
|
// table.
|
|
if (SymbolAddresses.count(Address))
|
|
continue;
|
|
// This function has no symbol, so it should have no SymbolName.
|
|
assert(Function.SymbolName.empty());
|
|
// We use DebugName for the name, though it may be empty if there is no
|
|
// "name" custom section, or that section is missing a name for this
|
|
// function.
|
|
StringRef Name = Function.DebugName;
|
|
Symbols.emplace_back(Address, Name, ELF::STT_NOTYPE);
|
|
}
|
|
}
|
|
|
|
static void addPltEntries(const MCSubtargetInfo &STI, const ObjectFile &Obj,
|
|
std::map<SectionRef, SectionSymbolsTy> &AllSymbols,
|
|
StringSaver &Saver) {
|
|
auto *ElfObj = dyn_cast<ELFObjectFileBase>(&Obj);
|
|
if (!ElfObj)
|
|
return;
|
|
DenseMap<StringRef, SectionRef> Sections;
|
|
for (SectionRef Section : Obj.sections()) {
|
|
Expected<StringRef> SecNameOrErr = Section.getName();
|
|
if (!SecNameOrErr) {
|
|
consumeError(SecNameOrErr.takeError());
|
|
continue;
|
|
}
|
|
Sections[*SecNameOrErr] = Section;
|
|
}
|
|
for (auto Plt : ElfObj->getPltEntries(STI)) {
|
|
if (Plt.Symbol) {
|
|
SymbolRef Symbol(*Plt.Symbol, ElfObj);
|
|
uint8_t SymbolType = getElfSymbolType(Obj, Symbol);
|
|
if (Expected<StringRef> NameOrErr = Symbol.getName()) {
|
|
if (!NameOrErr->empty())
|
|
AllSymbols[Sections[Plt.Section]].emplace_back(
|
|
Plt.Address, Saver.save((*NameOrErr + "@plt").str()), SymbolType);
|
|
continue;
|
|
} else {
|
|
// The warning has been reported in disassembleObject().
|
|
consumeError(NameOrErr.takeError());
|
|
}
|
|
}
|
|
reportWarning("PLT entry at 0x" + Twine::utohexstr(Plt.Address) +
|
|
" references an invalid symbol",
|
|
Obj.getFileName());
|
|
}
|
|
}
|
|
|
|
// Normally the disassembly output will skip blocks of zeroes. This function
|
|
// returns the number of zero bytes that can be skipped when dumping the
|
|
// disassembly of the instructions in Buf.
|
|
static size_t countSkippableZeroBytes(ArrayRef<uint8_t> Buf) {
|
|
// Find the number of leading zeroes.
|
|
size_t N = 0;
|
|
while (N < Buf.size() && !Buf[N])
|
|
++N;
|
|
|
|
// We may want to skip blocks of zero bytes, but unless we see
|
|
// at least 8 of them in a row.
|
|
if (N < 8)
|
|
return 0;
|
|
|
|
// We skip zeroes in multiples of 4 because do not want to truncate an
|
|
// instruction if it starts with a zero byte.
|
|
return N & ~0x3;
|
|
}
|
|
|
|
// Returns a map from sections to their relocations.
|
|
static std::map<SectionRef, std::vector<RelocationRef>>
|
|
getRelocsMap(object::ObjectFile const &Obj) {
|
|
std::map<SectionRef, std::vector<RelocationRef>> Ret;
|
|
uint64_t I = (uint64_t)-1;
|
|
for (SectionRef Sec : Obj.sections()) {
|
|
++I;
|
|
Expected<section_iterator> RelocatedOrErr = Sec.getRelocatedSection();
|
|
if (!RelocatedOrErr)
|
|
reportError(Obj.getFileName(),
|
|
"section (" + Twine(I) +
|
|
"): failed to get a relocated section: " +
|
|
toString(RelocatedOrErr.takeError()));
|
|
|
|
section_iterator Relocated = *RelocatedOrErr;
|
|
if (Relocated == Obj.section_end() || !checkSectionFilter(*Relocated).Keep)
|
|
continue;
|
|
std::vector<RelocationRef> &V = Ret[*Relocated];
|
|
append_range(V, Sec.relocations());
|
|
// Sort relocations by address.
|
|
llvm::stable_sort(V, isRelocAddressLess);
|
|
}
|
|
return Ret;
|
|
}
|
|
|
|
// Used for --adjust-vma to check if address should be adjusted by the
|
|
// specified value for a given section.
|
|
// For ELF we do not adjust non-allocatable sections like debug ones,
|
|
// because they are not loadable.
|
|
// TODO: implement for other file formats.
|
|
static bool shouldAdjustVA(const SectionRef &Section) {
|
|
const ObjectFile *Obj = Section.getObject();
|
|
if (Obj->isELF())
|
|
return ELFSectionRef(Section).getFlags() & ELF::SHF_ALLOC;
|
|
return false;
|
|
}
|
|
|
|
|
|
typedef std::pair<uint64_t, char> MappingSymbolPair;
|
|
static char getMappingSymbolKind(ArrayRef<MappingSymbolPair> MappingSymbols,
|
|
uint64_t Address) {
|
|
auto It =
|
|
partition_point(MappingSymbols, [Address](const MappingSymbolPair &Val) {
|
|
return Val.first <= Address;
|
|
});
|
|
// Return zero for any address before the first mapping symbol; this means
|
|
// we should use the default disassembly mode, depending on the target.
|
|
if (It == MappingSymbols.begin())
|
|
return '\x00';
|
|
return (It - 1)->second;
|
|
}
|
|
|
|
static uint64_t dumpARMELFData(uint64_t SectionAddr, uint64_t Index,
|
|
uint64_t End, const ObjectFile &Obj,
|
|
ArrayRef<uint8_t> Bytes,
|
|
ArrayRef<MappingSymbolPair> MappingSymbols,
|
|
const MCSubtargetInfo &STI, raw_ostream &OS) {
|
|
llvm::endianness Endian =
|
|
Obj.isLittleEndian() ? llvm::endianness::little : llvm::endianness::big;
|
|
size_t Start = OS.tell();
|
|
OS << format("%8" PRIx64 ": ", SectionAddr + Index);
|
|
if (Index + 4 <= End) {
|
|
dumpBytes(Bytes.slice(Index, 4), OS);
|
|
AlignToInstStartColumn(Start, STI, OS);
|
|
OS << "\t.word\t"
|
|
<< format_hex(support::endian::read32(Bytes.data() + Index, Endian),
|
|
10);
|
|
return 4;
|
|
}
|
|
if (Index + 2 <= End) {
|
|
dumpBytes(Bytes.slice(Index, 2), OS);
|
|
AlignToInstStartColumn(Start, STI, OS);
|
|
OS << "\t.short\t"
|
|
<< format_hex(support::endian::read16(Bytes.data() + Index, Endian), 6);
|
|
return 2;
|
|
}
|
|
dumpBytes(Bytes.slice(Index, 1), OS);
|
|
AlignToInstStartColumn(Start, STI, OS);
|
|
OS << "\t.byte\t" << format_hex(Bytes[Index], 4);
|
|
return 1;
|
|
}
|
|
|
|
static void dumpELFData(uint64_t SectionAddr, uint64_t Index, uint64_t End,
|
|
ArrayRef<uint8_t> Bytes) {
|
|
// print out data up to 8 bytes at a time in hex and ascii
|
|
uint8_t AsciiData[9] = {'\0'};
|
|
uint8_t Byte;
|
|
int NumBytes = 0;
|
|
|
|
for (; Index < End; ++Index) {
|
|
if (NumBytes == 0)
|
|
outs() << format("%8" PRIx64 ":", SectionAddr + Index);
|
|
Byte = Bytes.slice(Index)[0];
|
|
outs() << format(" %02x", Byte);
|
|
AsciiData[NumBytes] = isPrint(Byte) ? Byte : '.';
|
|
|
|
uint8_t IndentOffset = 0;
|
|
NumBytes++;
|
|
if (Index == End - 1 || NumBytes > 8) {
|
|
// Indent the space for less than 8 bytes data.
|
|
// 2 spaces for byte and one for space between bytes
|
|
IndentOffset = 3 * (8 - NumBytes);
|
|
for (int Excess = NumBytes; Excess < 8; Excess++)
|
|
AsciiData[Excess] = '\0';
|
|
NumBytes = 8;
|
|
}
|
|
if (NumBytes == 8) {
|
|
AsciiData[8] = '\0';
|
|
outs() << std::string(IndentOffset, ' ') << " ";
|
|
outs() << reinterpret_cast<char *>(AsciiData);
|
|
outs() << '\n';
|
|
NumBytes = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
SymbolInfoTy objdump::createSymbolInfo(const ObjectFile &Obj,
|
|
const SymbolRef &Symbol,
|
|
bool IsMappingSymbol) {
|
|
const StringRef FileName = Obj.getFileName();
|
|
const uint64_t Addr = unwrapOrError(Symbol.getAddress(), FileName);
|
|
const StringRef Name = unwrapOrError(Symbol.getName(), FileName);
|
|
|
|
if (Obj.isXCOFF() && (SymbolDescription || TracebackTable)) {
|
|
const auto &XCOFFObj = cast<XCOFFObjectFile>(Obj);
|
|
DataRefImpl SymbolDRI = Symbol.getRawDataRefImpl();
|
|
|
|
const uint32_t SymbolIndex = XCOFFObj.getSymbolIndex(SymbolDRI.p);
|
|
std::optional<XCOFF::StorageMappingClass> Smc =
|
|
getXCOFFSymbolCsectSMC(XCOFFObj, Symbol);
|
|
return SymbolInfoTy(Smc, Addr, Name, SymbolIndex,
|
|
isLabel(XCOFFObj, Symbol));
|
|
} else if (Obj.isXCOFF()) {
|
|
const SymbolRef::Type SymType = unwrapOrError(Symbol.getType(), FileName);
|
|
return SymbolInfoTy(Addr, Name, SymType, /*IsMappingSymbol=*/false,
|
|
/*IsXCOFF=*/true);
|
|
} else if (Obj.isWasm()) {
|
|
uint8_t SymType =
|
|
cast<WasmObjectFile>(&Obj)->getWasmSymbol(Symbol).Info.Kind;
|
|
return SymbolInfoTy(Addr, Name, SymType, false);
|
|
} else {
|
|
uint8_t Type =
|
|
Obj.isELF() ? getElfSymbolType(Obj, Symbol) : (uint8_t)ELF::STT_NOTYPE;
|
|
return SymbolInfoTy(Addr, Name, Type, IsMappingSymbol);
|
|
}
|
|
}
|
|
|
|
static SymbolInfoTy createDummySymbolInfo(const ObjectFile &Obj,
|
|
const uint64_t Addr, StringRef &Name,
|
|
uint8_t Type) {
|
|
if (Obj.isXCOFF() && (SymbolDescription || TracebackTable))
|
|
return SymbolInfoTy(std::nullopt, Addr, Name, std::nullopt, false);
|
|
if (Obj.isWasm())
|
|
return SymbolInfoTy(Addr, Name, wasm::WASM_SYMBOL_TYPE_SECTION);
|
|
return SymbolInfoTy(Addr, Name, Type);
|
|
}
|
|
|
|
static void collectBBAddrMapLabels(
|
|
const BBAddrMapInfo &FullAddrMap, uint64_t SectionAddr, uint64_t Start,
|
|
uint64_t End,
|
|
std::unordered_map<uint64_t, std::vector<BBAddrMapLabel>> &Labels) {
|
|
if (FullAddrMap.empty())
|
|
return;
|
|
Labels.clear();
|
|
uint64_t StartAddress = SectionAddr + Start;
|
|
uint64_t EndAddress = SectionAddr + End;
|
|
const BBAddrMapFunctionEntry *FunctionMap =
|
|
FullAddrMap.getEntryForAddress(StartAddress);
|
|
if (!FunctionMap)
|
|
return;
|
|
std::optional<size_t> BBRangeIndex =
|
|
FunctionMap->getAddrMap().getBBRangeIndexForBaseAddress(StartAddress);
|
|
if (!BBRangeIndex)
|
|
return;
|
|
size_t NumBBEntriesBeforeRange = 0;
|
|
for (size_t I = 0; I < *BBRangeIndex; ++I)
|
|
NumBBEntriesBeforeRange +=
|
|
FunctionMap->getAddrMap().BBRanges[I].BBEntries.size();
|
|
const auto &BBRange = FunctionMap->getAddrMap().BBRanges[*BBRangeIndex];
|
|
for (size_t I = 0; I < BBRange.BBEntries.size(); ++I) {
|
|
const BBAddrMap::BBEntry &BBEntry = BBRange.BBEntries[I];
|
|
uint64_t BBAddress = BBEntry.Offset + BBRange.BaseAddress;
|
|
if (BBAddress >= EndAddress)
|
|
continue;
|
|
|
|
std::string LabelString = ("BB" + Twine(BBEntry.ID)).str();
|
|
Labels[BBAddress].push_back(
|
|
{LabelString, FunctionMap->constructPGOLabelString(
|
|
NumBBEntriesBeforeRange + I, PrettyPGOAnalysisMap)});
|
|
}
|
|
}
|
|
|
|
static void
|
|
collectLocalBranchTargets(ArrayRef<uint8_t> Bytes, MCInstrAnalysis *MIA,
|
|
MCDisassembler *DisAsm, MCInstPrinter *IP,
|
|
const MCSubtargetInfo *STI, uint64_t SectionAddr,
|
|
uint64_t Start, uint64_t End,
|
|
std::unordered_map<uint64_t, std::string> &Labels) {
|
|
// Supported by certain targets.
|
|
const bool isPPC = STI->getTargetTriple().isPPC();
|
|
const bool isX86 = STI->getTargetTriple().isX86();
|
|
const bool isBPF = STI->getTargetTriple().isBPF();
|
|
if (!isPPC && !isX86 && !isBPF)
|
|
return;
|
|
|
|
if (MIA)
|
|
MIA->resetState();
|
|
|
|
Labels.clear();
|
|
unsigned LabelCount = 0;
|
|
Start += SectionAddr;
|
|
End += SectionAddr;
|
|
const bool isXCOFF = STI->getTargetTriple().isOSBinFormatXCOFF();
|
|
for (uint64_t Index = Start; Index < End;) {
|
|
// Disassemble a real instruction and record function-local branch labels.
|
|
MCInst Inst;
|
|
uint64_t Size;
|
|
ArrayRef<uint8_t> ThisBytes = Bytes.slice(Index - SectionAddr);
|
|
bool Disassembled =
|
|
DisAsm->getInstruction(Inst, Size, ThisBytes, Index, nulls());
|
|
if (Size == 0)
|
|
Size = std::min<uint64_t>(ThisBytes.size(),
|
|
DisAsm->suggestBytesToSkip(ThisBytes, Index));
|
|
|
|
if (MIA) {
|
|
if (Disassembled) {
|
|
uint64_t Target;
|
|
bool TargetKnown = MIA->evaluateBranch(Inst, Index, Size, Target);
|
|
if (TargetKnown && (Target >= Start && Target < End) &&
|
|
!Labels.count(Target)) {
|
|
// On PowerPC and AIX, a function call is encoded as a branch to 0.
|
|
// On other PowerPC platforms (ELF), a function call is encoded as
|
|
// a branch to self. Do not add a label for these cases.
|
|
if (!(isPPC &&
|
|
((Target == 0 && isXCOFF) || (Target == Index && !isXCOFF))))
|
|
Labels[Target] = ("L" + Twine(LabelCount++)).str();
|
|
}
|
|
MIA->updateState(Inst, Index);
|
|
} else
|
|
MIA->resetState();
|
|
}
|
|
Index += Size;
|
|
}
|
|
}
|
|
|
|
// Create an MCSymbolizer for the target and add it to the MCDisassembler.
|
|
// This is currently only used on AMDGPU, and assumes the format of the
|
|
// void * argument passed to AMDGPU's createMCSymbolizer.
|
|
static void addSymbolizer(
|
|
MCContext &Ctx, const Target *Target, StringRef TripleName,
|
|
MCDisassembler *DisAsm, uint64_t SectionAddr, ArrayRef<uint8_t> Bytes,
|
|
SectionSymbolsTy &Symbols,
|
|
std::vector<std::unique_ptr<std::string>> &SynthesizedLabelNames) {
|
|
|
|
std::unique_ptr<MCRelocationInfo> RelInfo(
|
|
Target->createMCRelocationInfo(TripleName, Ctx));
|
|
if (!RelInfo)
|
|
return;
|
|
std::unique_ptr<MCSymbolizer> Symbolizer(Target->createMCSymbolizer(
|
|
TripleName, nullptr, nullptr, &Symbols, &Ctx, std::move(RelInfo)));
|
|
MCSymbolizer *SymbolizerPtr = &*Symbolizer;
|
|
DisAsm->setSymbolizer(std::move(Symbolizer));
|
|
|
|
if (!SymbolizeOperands)
|
|
return;
|
|
|
|
// Synthesize labels referenced by branch instructions by
|
|
// disassembling, discarding the output, and collecting the referenced
|
|
// addresses from the symbolizer.
|
|
for (size_t Index = 0; Index != Bytes.size();) {
|
|
MCInst Inst;
|
|
uint64_t Size;
|
|
ArrayRef<uint8_t> ThisBytes = Bytes.slice(Index);
|
|
const uint64_t ThisAddr = SectionAddr + Index;
|
|
DisAsm->getInstruction(Inst, Size, ThisBytes, ThisAddr, nulls());
|
|
if (Size == 0)
|
|
Size = std::min<uint64_t>(ThisBytes.size(),
|
|
DisAsm->suggestBytesToSkip(ThisBytes, Index));
|
|
Index += Size;
|
|
}
|
|
ArrayRef<uint64_t> LabelAddrsRef = SymbolizerPtr->getReferencedAddresses();
|
|
// Copy and sort to remove duplicates.
|
|
std::vector<uint64_t> LabelAddrs;
|
|
LabelAddrs.insert(LabelAddrs.end(), LabelAddrsRef.begin(),
|
|
LabelAddrsRef.end());
|
|
llvm::sort(LabelAddrs);
|
|
LabelAddrs.resize(llvm::unique(LabelAddrs) - LabelAddrs.begin());
|
|
// Add the labels.
|
|
for (unsigned LabelNum = 0; LabelNum != LabelAddrs.size(); ++LabelNum) {
|
|
auto Name = std::make_unique<std::string>();
|
|
*Name = (Twine("L") + Twine(LabelNum)).str();
|
|
SynthesizedLabelNames.push_back(std::move(Name));
|
|
Symbols.push_back(SymbolInfoTy(
|
|
LabelAddrs[LabelNum], *SynthesizedLabelNames.back(), ELF::STT_NOTYPE));
|
|
}
|
|
llvm::stable_sort(Symbols);
|
|
// Recreate the symbolizer with the new symbols list.
|
|
RelInfo.reset(Target->createMCRelocationInfo(TripleName, Ctx));
|
|
Symbolizer.reset(Target->createMCSymbolizer(
|
|
TripleName, nullptr, nullptr, &Symbols, &Ctx, std::move(RelInfo)));
|
|
DisAsm->setSymbolizer(std::move(Symbolizer));
|
|
}
|
|
|
|
static StringRef getSegmentName(const MachOObjectFile *MachO,
|
|
const SectionRef &Section) {
|
|
if (MachO) {
|
|
DataRefImpl DR = Section.getRawDataRefImpl();
|
|
StringRef SegmentName = MachO->getSectionFinalSegmentName(DR);
|
|
return SegmentName;
|
|
}
|
|
return "";
|
|
}
|
|
|
|
static void emitPostInstructionInfo(formatted_raw_ostream &FOS,
|
|
const MCAsmInfo &MAI,
|
|
const MCSubtargetInfo &STI,
|
|
StringRef Comments,
|
|
LiveVariablePrinter &LVP) {
|
|
do {
|
|
if (!Comments.empty()) {
|
|
// Emit a line of comments.
|
|
StringRef Comment;
|
|
std::tie(Comment, Comments) = Comments.split('\n');
|
|
// MAI.getCommentColumn() assumes that instructions are printed at the
|
|
// position of 8, while getInstStartColumn() returns the actual position.
|
|
unsigned CommentColumn =
|
|
MAI.getCommentColumn() - 8 + getInstStartColumn(STI);
|
|
FOS.PadToColumn(CommentColumn);
|
|
FOS << MAI.getCommentString() << ' ' << Comment;
|
|
}
|
|
LVP.printAfterInst(FOS);
|
|
FOS << '\n';
|
|
} while (!Comments.empty());
|
|
FOS.flush();
|
|
}
|
|
|
|
static void createFakeELFSections(ObjectFile &Obj) {
|
|
assert(Obj.isELF());
|
|
if (auto *Elf32LEObj = dyn_cast<ELF32LEObjectFile>(&Obj))
|
|
Elf32LEObj->createFakeSections();
|
|
else if (auto *Elf64LEObj = dyn_cast<ELF64LEObjectFile>(&Obj))
|
|
Elf64LEObj->createFakeSections();
|
|
else if (auto *Elf32BEObj = dyn_cast<ELF32BEObjectFile>(&Obj))
|
|
Elf32BEObj->createFakeSections();
|
|
else if (auto *Elf64BEObj = cast<ELF64BEObjectFile>(&Obj))
|
|
Elf64BEObj->createFakeSections();
|
|
else
|
|
llvm_unreachable("Unsupported binary format");
|
|
}
|
|
|
|
// Tries to fetch a more complete version of the given object file using its
|
|
// Build ID. Returns std::nullopt if nothing was found.
|
|
static std::optional<OwningBinary<Binary>>
|
|
fetchBinaryByBuildID(const ObjectFile &Obj) {
|
|
object::BuildIDRef BuildID = getBuildID(&Obj);
|
|
if (BuildID.empty())
|
|
return std::nullopt;
|
|
std::optional<std::string> Path = BIDFetcher->fetch(BuildID);
|
|
if (!Path)
|
|
return std::nullopt;
|
|
Expected<OwningBinary<Binary>> DebugBinary = createBinary(*Path);
|
|
if (!DebugBinary) {
|
|
reportWarning(toString(DebugBinary.takeError()), *Path);
|
|
return std::nullopt;
|
|
}
|
|
return std::move(*DebugBinary);
|
|
}
|
|
|
|
static void
|
|
disassembleObject(ObjectFile &Obj, const ObjectFile &DbgObj,
|
|
DisassemblerTarget &PrimaryTarget,
|
|
std::optional<DisassemblerTarget> &SecondaryTarget,
|
|
SourcePrinter &SP, bool InlineRelocs) {
|
|
DisassemblerTarget *DT = &PrimaryTarget;
|
|
bool PrimaryIsThumb = false;
|
|
SmallVector<std::pair<uint64_t, uint64_t>, 0> CHPECodeMap;
|
|
|
|
if (SecondaryTarget) {
|
|
if (isArmElf(Obj)) {
|
|
PrimaryIsThumb =
|
|
PrimaryTarget.SubtargetInfo->checkFeatures("+thumb-mode");
|
|
} else if (const auto *COFFObj = dyn_cast<COFFObjectFile>(&Obj)) {
|
|
const chpe_metadata *CHPEMetadata = COFFObj->getCHPEMetadata();
|
|
if (CHPEMetadata && CHPEMetadata->CodeMapCount) {
|
|
uintptr_t CodeMapInt;
|
|
cantFail(COFFObj->getRvaPtr(CHPEMetadata->CodeMap, CodeMapInt));
|
|
auto CodeMap = reinterpret_cast<const chpe_range_entry *>(CodeMapInt);
|
|
|
|
for (uint32_t i = 0; i < CHPEMetadata->CodeMapCount; ++i) {
|
|
if (CodeMap[i].getType() == chpe_range_type::Amd64 &&
|
|
CodeMap[i].Length) {
|
|
// Store x86_64 CHPE code ranges.
|
|
uint64_t Start = CodeMap[i].getStart() + COFFObj->getImageBase();
|
|
CHPECodeMap.emplace_back(Start, Start + CodeMap[i].Length);
|
|
}
|
|
}
|
|
llvm::sort(CHPECodeMap);
|
|
}
|
|
}
|
|
}
|
|
|
|
std::map<SectionRef, std::vector<RelocationRef>> RelocMap;
|
|
if (InlineRelocs || Obj.isXCOFF())
|
|
RelocMap = getRelocsMap(Obj);
|
|
bool Is64Bits = Obj.getBytesInAddress() > 4;
|
|
|
|
// Create a mapping from virtual address to symbol name. This is used to
|
|
// pretty print the symbols while disassembling.
|
|
std::map<SectionRef, SectionSymbolsTy> AllSymbols;
|
|
std::map<SectionRef, SmallVector<MappingSymbolPair, 0>> AllMappingSymbols;
|
|
SectionSymbolsTy AbsoluteSymbols;
|
|
const StringRef FileName = Obj.getFileName();
|
|
const MachOObjectFile *MachO = dyn_cast<const MachOObjectFile>(&Obj);
|
|
for (const SymbolRef &Symbol : Obj.symbols()) {
|
|
Expected<StringRef> NameOrErr = Symbol.getName();
|
|
if (!NameOrErr) {
|
|
reportWarning(toString(NameOrErr.takeError()), FileName);
|
|
continue;
|
|
}
|
|
if (NameOrErr->empty() && !(Obj.isXCOFF() && SymbolDescription))
|
|
continue;
|
|
|
|
if (Obj.isELF() &&
|
|
(cantFail(Symbol.getFlags()) & SymbolRef::SF_FormatSpecific)) {
|
|
// Symbol is intended not to be displayed by default (STT_FILE,
|
|
// STT_SECTION, or a mapping symbol). Ignore STT_SECTION symbols. We will
|
|
// synthesize a section symbol if no symbol is defined at offset 0.
|
|
//
|
|
// For a mapping symbol, store it within both AllSymbols and
|
|
// AllMappingSymbols. If --show-all-symbols is unspecified, its label will
|
|
// not be printed in disassembly listing.
|
|
if (getElfSymbolType(Obj, Symbol) != ELF::STT_SECTION &&
|
|
hasMappingSymbols(Obj)) {
|
|
section_iterator SecI = unwrapOrError(Symbol.getSection(), FileName);
|
|
if (SecI != Obj.section_end()) {
|
|
uint64_t SectionAddr = SecI->getAddress();
|
|
uint64_t Address = cantFail(Symbol.getAddress());
|
|
StringRef Name = *NameOrErr;
|
|
if (Name.consume_front("$") && Name.size() &&
|
|
strchr("adtx", Name[0])) {
|
|
AllMappingSymbols[*SecI].emplace_back(Address - SectionAddr,
|
|
Name[0]);
|
|
AllSymbols[*SecI].push_back(
|
|
createSymbolInfo(Obj, Symbol, /*MappingSymbol=*/true));
|
|
}
|
|
}
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (MachO) {
|
|
// __mh_(execute|dylib|dylinker|bundle|preload|object)_header are special
|
|
// symbols that support MachO header introspection. They do not bind to
|
|
// code locations and are irrelevant for disassembly.
|
|
if (NameOrErr->starts_with("__mh_") && NameOrErr->ends_with("_header"))
|
|
continue;
|
|
// Don't ask a Mach-O STAB symbol for its section unless you know that
|
|
// STAB symbol's section field refers to a valid section index. Otherwise
|
|
// the symbol may error trying to load a section that does not exist.
|
|
DataRefImpl SymDRI = Symbol.getRawDataRefImpl();
|
|
uint8_t NType = (MachO->is64Bit() ?
|
|
MachO->getSymbol64TableEntry(SymDRI).n_type:
|
|
MachO->getSymbolTableEntry(SymDRI).n_type);
|
|
if (NType & MachO::N_STAB)
|
|
continue;
|
|
}
|
|
|
|
section_iterator SecI = unwrapOrError(Symbol.getSection(), FileName);
|
|
if (SecI != Obj.section_end())
|
|
AllSymbols[*SecI].push_back(createSymbolInfo(Obj, Symbol));
|
|
else
|
|
AbsoluteSymbols.push_back(createSymbolInfo(Obj, Symbol));
|
|
}
|
|
|
|
if (AllSymbols.empty() && Obj.isELF())
|
|
addDynamicElfSymbols(cast<ELFObjectFileBase>(Obj), AllSymbols);
|
|
|
|
if (Obj.isWasm())
|
|
addMissingWasmCodeSymbols(cast<WasmObjectFile>(Obj), AllSymbols);
|
|
|
|
if (Obj.isELF() && Obj.sections().empty())
|
|
createFakeELFSections(Obj);
|
|
|
|
BumpPtrAllocator A;
|
|
StringSaver Saver(A);
|
|
addPltEntries(*DT->SubtargetInfo, Obj, AllSymbols, Saver);
|
|
|
|
// Create a mapping from virtual address to section. An empty section can
|
|
// cause more than one section at the same address. Sort such sections to be
|
|
// before same-addressed non-empty sections so that symbol lookups prefer the
|
|
// non-empty section.
|
|
std::vector<std::pair<uint64_t, SectionRef>> SectionAddresses;
|
|
for (SectionRef Sec : Obj.sections())
|
|
SectionAddresses.emplace_back(Sec.getAddress(), Sec);
|
|
llvm::stable_sort(SectionAddresses, [](const auto &LHS, const auto &RHS) {
|
|
if (LHS.first != RHS.first)
|
|
return LHS.first < RHS.first;
|
|
return LHS.second.getSize() < RHS.second.getSize();
|
|
});
|
|
|
|
// Linked executables (.exe and .dll files) typically don't include a real
|
|
// symbol table but they might contain an export table.
|
|
if (const auto *COFFObj = dyn_cast<COFFObjectFile>(&Obj)) {
|
|
for (const auto &ExportEntry : COFFObj->export_directories()) {
|
|
StringRef Name;
|
|
if (Error E = ExportEntry.getSymbolName(Name))
|
|
reportError(std::move(E), Obj.getFileName());
|
|
if (Name.empty())
|
|
continue;
|
|
|
|
uint32_t RVA;
|
|
if (Error E = ExportEntry.getExportRVA(RVA))
|
|
reportError(std::move(E), Obj.getFileName());
|
|
|
|
uint64_t VA = COFFObj->getImageBase() + RVA;
|
|
auto Sec = partition_point(
|
|
SectionAddresses, [VA](const std::pair<uint64_t, SectionRef> &O) {
|
|
return O.first <= VA;
|
|
});
|
|
if (Sec != SectionAddresses.begin()) {
|
|
--Sec;
|
|
AllSymbols[Sec->second].emplace_back(VA, Name, ELF::STT_NOTYPE);
|
|
} else
|
|
AbsoluteSymbols.emplace_back(VA, Name, ELF::STT_NOTYPE);
|
|
}
|
|
}
|
|
|
|
// Sort all the symbols, this allows us to use a simple binary search to find
|
|
// Multiple symbols can have the same address. Use a stable sort to stabilize
|
|
// the output.
|
|
StringSet<> FoundDisasmSymbolSet;
|
|
for (std::pair<const SectionRef, SectionSymbolsTy> &SecSyms : AllSymbols)
|
|
llvm::stable_sort(SecSyms.second);
|
|
llvm::stable_sort(AbsoluteSymbols);
|
|
|
|
std::unique_ptr<DWARFContext> DICtx;
|
|
LiveVariablePrinter LVP(*DT->Context->getRegisterInfo(), *DT->SubtargetInfo);
|
|
|
|
if (DbgVariables != DVDisabled) {
|
|
DICtx = DWARFContext::create(DbgObj);
|
|
for (const std::unique_ptr<DWARFUnit> &CU : DICtx->compile_units())
|
|
LVP.addCompileUnit(CU->getUnitDIE(false));
|
|
}
|
|
|
|
LLVM_DEBUG(LVP.dump());
|
|
|
|
BBAddrMapInfo FullAddrMap;
|
|
auto ReadBBAddrMap = [&](std::optional<unsigned> SectionIndex =
|
|
std::nullopt) {
|
|
FullAddrMap.clear();
|
|
if (const auto *Elf = dyn_cast<ELFObjectFileBase>(&Obj)) {
|
|
std::vector<PGOAnalysisMap> PGOAnalyses;
|
|
auto BBAddrMapsOrErr = Elf->readBBAddrMap(SectionIndex, &PGOAnalyses);
|
|
if (!BBAddrMapsOrErr) {
|
|
reportWarning(toString(BBAddrMapsOrErr.takeError()), Obj.getFileName());
|
|
return;
|
|
}
|
|
for (auto &&[FunctionBBAddrMap, FunctionPGOAnalysis] :
|
|
zip_equal(*std::move(BBAddrMapsOrErr), std::move(PGOAnalyses))) {
|
|
FullAddrMap.AddFunctionEntry(std::move(FunctionBBAddrMap),
|
|
std::move(FunctionPGOAnalysis));
|
|
}
|
|
}
|
|
};
|
|
|
|
// For non-relocatable objects, Read all LLVM_BB_ADDR_MAP sections into a
|
|
// single mapping, since they don't have any conflicts.
|
|
if (SymbolizeOperands && !Obj.isRelocatableObject())
|
|
ReadBBAddrMap();
|
|
|
|
std::optional<llvm::BTFParser> BTF;
|
|
if (InlineRelocs && BTFParser::hasBTFSections(Obj)) {
|
|
BTF.emplace();
|
|
BTFParser::ParseOptions Opts = {};
|
|
Opts.LoadTypes = true;
|
|
Opts.LoadRelocs = true;
|
|
if (Error E = BTF->parse(Obj, Opts))
|
|
WithColor::defaultErrorHandler(std::move(E));
|
|
}
|
|
|
|
for (const SectionRef &Section : ToolSectionFilter(Obj)) {
|
|
if (FilterSections.empty() && !DisassembleAll &&
|
|
(!Section.isText() || Section.isVirtual()))
|
|
continue;
|
|
|
|
uint64_t SectionAddr = Section.getAddress();
|
|
uint64_t SectSize = Section.getSize();
|
|
if (!SectSize)
|
|
continue;
|
|
|
|
// For relocatable object files, read the LLVM_BB_ADDR_MAP section
|
|
// corresponding to this section, if present.
|
|
if (SymbolizeOperands && Obj.isRelocatableObject())
|
|
ReadBBAddrMap(Section.getIndex());
|
|
|
|
// Get the list of all the symbols in this section.
|
|
SectionSymbolsTy &Symbols = AllSymbols[Section];
|
|
auto &MappingSymbols = AllMappingSymbols[Section];
|
|
llvm::sort(MappingSymbols);
|
|
|
|
ArrayRef<uint8_t> Bytes = arrayRefFromStringRef(
|
|
unwrapOrError(Section.getContents(), Obj.getFileName()));
|
|
|
|
std::vector<std::unique_ptr<std::string>> SynthesizedLabelNames;
|
|
if (Obj.isELF() && Obj.getArch() == Triple::amdgcn) {
|
|
// AMDGPU disassembler uses symbolizer for printing labels
|
|
addSymbolizer(*DT->Context, DT->TheTarget, TripleName, DT->DisAsm.get(),
|
|
SectionAddr, Bytes, Symbols, SynthesizedLabelNames);
|
|
}
|
|
|
|
StringRef SegmentName = getSegmentName(MachO, Section);
|
|
StringRef SectionName = unwrapOrError(Section.getName(), Obj.getFileName());
|
|
// If the section has no symbol at the start, just insert a dummy one.
|
|
// Without --show-all-symbols, also insert one if all symbols at the start
|
|
// are mapping symbols.
|
|
bool CreateDummy = Symbols.empty();
|
|
if (!CreateDummy) {
|
|
CreateDummy = true;
|
|
for (auto &Sym : Symbols) {
|
|
if (Sym.Addr != SectionAddr)
|
|
break;
|
|
if (!Sym.IsMappingSymbol || ShowAllSymbols)
|
|
CreateDummy = false;
|
|
}
|
|
}
|
|
if (CreateDummy) {
|
|
SymbolInfoTy Sym = createDummySymbolInfo(
|
|
Obj, SectionAddr, SectionName,
|
|
Section.isText() ? ELF::STT_FUNC : ELF::STT_OBJECT);
|
|
if (Obj.isXCOFF())
|
|
Symbols.insert(Symbols.begin(), Sym);
|
|
else
|
|
Symbols.insert(llvm::lower_bound(Symbols, Sym), Sym);
|
|
}
|
|
|
|
SmallString<40> Comments;
|
|
raw_svector_ostream CommentStream(Comments);
|
|
|
|
uint64_t VMAAdjustment = 0;
|
|
if (shouldAdjustVA(Section))
|
|
VMAAdjustment = AdjustVMA;
|
|
|
|
// In executable and shared objects, r_offset holds a virtual address.
|
|
// Subtract SectionAddr from the r_offset field of a relocation to get
|
|
// the section offset.
|
|
uint64_t RelAdjustment = Obj.isRelocatableObject() ? 0 : SectionAddr;
|
|
uint64_t Size;
|
|
uint64_t Index;
|
|
bool PrintedSection = false;
|
|
std::vector<RelocationRef> Rels = RelocMap[Section];
|
|
std::vector<RelocationRef>::const_iterator RelCur = Rels.begin();
|
|
std::vector<RelocationRef>::const_iterator RelEnd = Rels.end();
|
|
|
|
// Loop over each chunk of code between two points where at least
|
|
// one symbol is defined.
|
|
for (size_t SI = 0, SE = Symbols.size(); SI != SE;) {
|
|
// Advance SI past all the symbols starting at the same address,
|
|
// and make an ArrayRef of them.
|
|
unsigned FirstSI = SI;
|
|
uint64_t Start = Symbols[SI].Addr;
|
|
ArrayRef<SymbolInfoTy> SymbolsHere;
|
|
while (SI != SE && Symbols[SI].Addr == Start)
|
|
++SI;
|
|
SymbolsHere = ArrayRef<SymbolInfoTy>(&Symbols[FirstSI], SI - FirstSI);
|
|
|
|
// Get the demangled names of all those symbols. We end up with a vector
|
|
// of StringRef that holds the names we're going to use, and a vector of
|
|
// std::string that stores the new strings returned by demangle(), if
|
|
// any. If we don't call demangle() then that vector can stay empty.
|
|
std::vector<StringRef> SymNamesHere;
|
|
std::vector<std::string> DemangledSymNamesHere;
|
|
if (Demangle) {
|
|
// Fetch the demangled names and store them locally.
|
|
for (const SymbolInfoTy &Symbol : SymbolsHere)
|
|
DemangledSymNamesHere.push_back(demangle(Symbol.Name));
|
|
// Now we've finished modifying that vector, it's safe to make
|
|
// a vector of StringRefs pointing into it.
|
|
SymNamesHere.insert(SymNamesHere.begin(), DemangledSymNamesHere.begin(),
|
|
DemangledSymNamesHere.end());
|
|
} else {
|
|
for (const SymbolInfoTy &Symbol : SymbolsHere)
|
|
SymNamesHere.push_back(Symbol.Name);
|
|
}
|
|
|
|
// Distinguish ELF data from code symbols, which will be used later on to
|
|
// decide whether to 'disassemble' this chunk as a data declaration via
|
|
// dumpELFData(), or whether to treat it as code.
|
|
//
|
|
// If data _and_ code symbols are defined at the same address, the code
|
|
// takes priority, on the grounds that disassembling code is our main
|
|
// purpose here, and it would be a worse failure to _not_ interpret
|
|
// something that _was_ meaningful as code than vice versa.
|
|
//
|
|
// Any ELF symbol type that is not clearly data will be regarded as code.
|
|
// In particular, one of the uses of STT_NOTYPE is for branch targets
|
|
// inside functions, for which STT_FUNC would be inaccurate.
|
|
//
|
|
// So here, we spot whether there's any non-data symbol present at all,
|
|
// and only set the DisassembleAsELFData flag if there isn't. Also, we use
|
|
// this distinction to inform the decision of which symbol to print at
|
|
// the head of the section, so that if we're printing code, we print a
|
|
// code-related symbol name to go with it.
|
|
bool DisassembleAsELFData = false;
|
|
size_t DisplaySymIndex = SymbolsHere.size() - 1;
|
|
if (Obj.isELF() && !DisassembleAll && Section.isText()) {
|
|
DisassembleAsELFData = true; // unless we find a code symbol below
|
|
|
|
for (size_t i = 0; i < SymbolsHere.size(); ++i) {
|
|
uint8_t SymTy = SymbolsHere[i].Type;
|
|
if (SymTy != ELF::STT_OBJECT && SymTy != ELF::STT_COMMON) {
|
|
DisassembleAsELFData = false;
|
|
DisplaySymIndex = i;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Decide which symbol(s) from this collection we're going to print.
|
|
std::vector<bool> SymsToPrint(SymbolsHere.size(), false);
|
|
// If the user has given the --disassemble-symbols option, then we must
|
|
// display every symbol in that set, and no others.
|
|
if (!DisasmSymbolSet.empty()) {
|
|
bool FoundAny = false;
|
|
for (size_t i = 0; i < SymbolsHere.size(); ++i) {
|
|
if (DisasmSymbolSet.count(SymNamesHere[i])) {
|
|
SymsToPrint[i] = true;
|
|
FoundAny = true;
|
|
}
|
|
}
|
|
|
|
// And if none of the symbols here is one that the user asked for, skip
|
|
// disassembling this entire chunk of code.
|
|
if (!FoundAny)
|
|
continue;
|
|
} else if (!SymbolsHere[DisplaySymIndex].IsMappingSymbol) {
|
|
// Otherwise, print whichever symbol at this location is last in the
|
|
// Symbols array, because that array is pre-sorted in a way intended to
|
|
// correlate with priority of which symbol to display.
|
|
SymsToPrint[DisplaySymIndex] = true;
|
|
}
|
|
|
|
// Now that we know we're disassembling this section, override the choice
|
|
// of which symbols to display by printing _all_ of them at this address
|
|
// if the user asked for all symbols.
|
|
//
|
|
// That way, '--show-all-symbols --disassemble-symbol=foo' will print
|
|
// only the chunk of code headed by 'foo', but also show any other
|
|
// symbols defined at that address, such as aliases for 'foo', or the ARM
|
|
// mapping symbol preceding its code.
|
|
if (ShowAllSymbols) {
|
|
for (size_t i = 0; i < SymbolsHere.size(); ++i)
|
|
SymsToPrint[i] = true;
|
|
}
|
|
|
|
if (Start < SectionAddr || StopAddress <= Start)
|
|
continue;
|
|
|
|
for (size_t i = 0; i < SymbolsHere.size(); ++i)
|
|
FoundDisasmSymbolSet.insert(SymNamesHere[i]);
|
|
|
|
// The end is the section end, the beginning of the next symbol, or
|
|
// --stop-address.
|
|
uint64_t End = std::min<uint64_t>(SectionAddr + SectSize, StopAddress);
|
|
if (SI < SE)
|
|
End = std::min(End, Symbols[SI].Addr);
|
|
if (Start >= End || End <= StartAddress)
|
|
continue;
|
|
Start -= SectionAddr;
|
|
End -= SectionAddr;
|
|
|
|
if (!PrintedSection) {
|
|
PrintedSection = true;
|
|
outs() << "\nDisassembly of section ";
|
|
if (!SegmentName.empty())
|
|
outs() << SegmentName << ",";
|
|
outs() << SectionName << ":\n";
|
|
}
|
|
|
|
bool PrintedLabel = false;
|
|
for (size_t i = 0; i < SymbolsHere.size(); ++i) {
|
|
if (!SymsToPrint[i])
|
|
continue;
|
|
|
|
const SymbolInfoTy &Symbol = SymbolsHere[i];
|
|
const StringRef SymbolName = SymNamesHere[i];
|
|
|
|
if (!PrintedLabel) {
|
|
outs() << '\n';
|
|
PrintedLabel = true;
|
|
}
|
|
if (LeadingAddr)
|
|
outs() << format(Is64Bits ? "%016" PRIx64 " " : "%08" PRIx64 " ",
|
|
SectionAddr + Start + VMAAdjustment);
|
|
if (Obj.isXCOFF() && SymbolDescription) {
|
|
outs() << getXCOFFSymbolDescription(Symbol, SymbolName) << ":\n";
|
|
} else
|
|
outs() << '<' << SymbolName << ">:\n";
|
|
}
|
|
|
|
// Don't print raw contents of a virtual section. A virtual section
|
|
// doesn't have any contents in the file.
|
|
if (Section.isVirtual()) {
|
|
outs() << "...\n";
|
|
continue;
|
|
}
|
|
|
|
// See if any of the symbols defined at this location triggers target-
|
|
// specific disassembly behavior, e.g. of special descriptors or function
|
|
// prelude information.
|
|
//
|
|
// We stop this loop at the first symbol that triggers some kind of
|
|
// interesting behavior (if any), on the assumption that if two symbols
|
|
// defined at the same address trigger two conflicting symbol handlers,
|
|
// the object file is probably confused anyway, and it would make even
|
|
// less sense to present the output of _both_ handlers, because that
|
|
// would describe the same data twice.
|
|
for (size_t SHI = 0; SHI < SymbolsHere.size(); ++SHI) {
|
|
SymbolInfoTy Symbol = SymbolsHere[SHI];
|
|
|
|
Expected<bool> RespondedOrErr = DT->DisAsm->onSymbolStart(
|
|
Symbol, Size, Bytes.slice(Start, End - Start), SectionAddr + Start);
|
|
|
|
if (RespondedOrErr && !*RespondedOrErr) {
|
|
// This symbol didn't trigger any interesting handling. Try the other
|
|
// symbols defined at this address.
|
|
continue;
|
|
}
|
|
|
|
// If onSymbolStart returned an Error, that means it identified some
|
|
// kind of special data at this address, but wasn't able to disassemble
|
|
// it meaningfully. So we fall back to printing the error out and
|
|
// disassembling the failed region as bytes, assuming that the target
|
|
// detected the failure before printing anything.
|
|
if (!RespondedOrErr) {
|
|
std::string ErrMsgStr = toString(RespondedOrErr.takeError());
|
|
StringRef ErrMsg = ErrMsgStr;
|
|
do {
|
|
StringRef Line;
|
|
std::tie(Line, ErrMsg) = ErrMsg.split('\n');
|
|
outs() << DT->Context->getAsmInfo()->getCommentString()
|
|
<< " error decoding " << SymNamesHere[SHI] << ": " << Line
|
|
<< '\n';
|
|
} while (!ErrMsg.empty());
|
|
|
|
if (Size) {
|
|
outs() << DT->Context->getAsmInfo()->getCommentString()
|
|
<< " decoding failed region as bytes\n";
|
|
for (uint64_t I = 0; I < Size; ++I)
|
|
outs() << "\t.byte\t " << format_hex(Bytes[I], 1, /*Upper=*/true)
|
|
<< '\n';
|
|
}
|
|
}
|
|
|
|
// Regardless of whether onSymbolStart returned an Error or true, 'Size'
|
|
// will have been set to the amount of data covered by whatever prologue
|
|
// the target identified. So we advance our own position to beyond that.
|
|
// Sometimes that will be the entire distance to the next symbol, and
|
|
// sometimes it will be just a prologue and we should start
|
|
// disassembling instructions from where it left off.
|
|
Start += Size;
|
|
break;
|
|
}
|
|
|
|
Index = Start;
|
|
if (SectionAddr < StartAddress)
|
|
Index = std::max<uint64_t>(Index, StartAddress - SectionAddr);
|
|
|
|
if (DisassembleAsELFData) {
|
|
dumpELFData(SectionAddr, Index, End, Bytes);
|
|
Index = End;
|
|
continue;
|
|
}
|
|
|
|
// Skip relocations from symbols that are not dumped.
|
|
for (; RelCur != RelEnd; ++RelCur) {
|
|
uint64_t Offset = RelCur->getOffset() - RelAdjustment;
|
|
if (Index <= Offset)
|
|
break;
|
|
}
|
|
|
|
bool DumpARMELFData = false;
|
|
bool DumpTracebackTableForXCOFFFunction =
|
|
Obj.isXCOFF() && Section.isText() && TracebackTable &&
|
|
Symbols[SI - 1].XCOFFSymInfo.StorageMappingClass &&
|
|
(*Symbols[SI - 1].XCOFFSymInfo.StorageMappingClass == XCOFF::XMC_PR);
|
|
|
|
formatted_raw_ostream FOS(outs());
|
|
|
|
std::unordered_map<uint64_t, std::string> AllLabels;
|
|
std::unordered_map<uint64_t, std::vector<BBAddrMapLabel>> BBAddrMapLabels;
|
|
if (SymbolizeOperands) {
|
|
collectLocalBranchTargets(Bytes, DT->InstrAnalysis.get(),
|
|
DT->DisAsm.get(), DT->InstPrinter.get(),
|
|
PrimaryTarget.SubtargetInfo.get(),
|
|
SectionAddr, Index, End, AllLabels);
|
|
collectBBAddrMapLabels(FullAddrMap, SectionAddr, Index, End,
|
|
BBAddrMapLabels);
|
|
}
|
|
|
|
if (DT->InstrAnalysis)
|
|
DT->InstrAnalysis->resetState();
|
|
|
|
while (Index < End) {
|
|
uint64_t RelOffset;
|
|
|
|
// ARM and AArch64 ELF binaries can interleave data and text in the
|
|
// same section. We rely on the markers introduced to understand what
|
|
// we need to dump. If the data marker is within a function, it is
|
|
// denoted as a word/short etc.
|
|
if (!MappingSymbols.empty()) {
|
|
char Kind = getMappingSymbolKind(MappingSymbols, Index);
|
|
DumpARMELFData = Kind == 'd';
|
|
if (SecondaryTarget) {
|
|
if (Kind == 'a') {
|
|
DT = PrimaryIsThumb ? &*SecondaryTarget : &PrimaryTarget;
|
|
} else if (Kind == 't') {
|
|
DT = PrimaryIsThumb ? &PrimaryTarget : &*SecondaryTarget;
|
|
}
|
|
}
|
|
} else if (!CHPECodeMap.empty()) {
|
|
uint64_t Address = SectionAddr + Index;
|
|
auto It = partition_point(
|
|
CHPECodeMap,
|
|
[Address](const std::pair<uint64_t, uint64_t> &Entry) {
|
|
return Entry.first <= Address;
|
|
});
|
|
if (It != CHPECodeMap.begin() && Address < (It - 1)->second) {
|
|
DT = &*SecondaryTarget;
|
|
} else {
|
|
DT = &PrimaryTarget;
|
|
// X64 disassembler range may have left Index unaligned, so
|
|
// make sure that it's aligned when we switch back to ARM64
|
|
// code.
|
|
Index = llvm::alignTo(Index, 4);
|
|
if (Index >= End)
|
|
break;
|
|
}
|
|
}
|
|
|
|
auto findRel = [&]() {
|
|
while (RelCur != RelEnd) {
|
|
RelOffset = RelCur->getOffset() - RelAdjustment;
|
|
// If this relocation is hidden, skip it.
|
|
if (getHidden(*RelCur) || SectionAddr + RelOffset < StartAddress) {
|
|
++RelCur;
|
|
continue;
|
|
}
|
|
|
|
// Stop when RelCur's offset is past the disassembled
|
|
// instruction/data.
|
|
if (RelOffset >= Index + Size)
|
|
return false;
|
|
if (RelOffset >= Index)
|
|
return true;
|
|
++RelCur;
|
|
}
|
|
return false;
|
|
};
|
|
|
|
// When -z or --disassemble-zeroes are given we always dissasemble
|
|
// them. Otherwise we might want to skip zero bytes we see.
|
|
if (!DisassembleZeroes) {
|
|
uint64_t MaxOffset = End - Index;
|
|
// For --reloc: print zero blocks patched by relocations, so that
|
|
// relocations can be shown in the dump.
|
|
if (InlineRelocs && RelCur != RelEnd)
|
|
MaxOffset = std::min(RelCur->getOffset() - RelAdjustment - Index,
|
|
MaxOffset);
|
|
|
|
if (size_t N =
|
|
countSkippableZeroBytes(Bytes.slice(Index, MaxOffset))) {
|
|
FOS << "\t\t..." << '\n';
|
|
Index += N;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (DumpARMELFData) {
|
|
Size = dumpARMELFData(SectionAddr, Index, End, Obj, Bytes,
|
|
MappingSymbols, *DT->SubtargetInfo, FOS);
|
|
} else {
|
|
|
|
if (DumpTracebackTableForXCOFFFunction &&
|
|
doesXCOFFTracebackTableBegin(Bytes.slice(Index, 4))) {
|
|
dumpTracebackTable(Bytes.slice(Index),
|
|
SectionAddr + Index + VMAAdjustment, FOS,
|
|
SectionAddr + End + VMAAdjustment,
|
|
*DT->SubtargetInfo, cast<XCOFFObjectFile>(&Obj));
|
|
Index = End;
|
|
continue;
|
|
}
|
|
|
|
// Print local label if there's any.
|
|
auto Iter1 = BBAddrMapLabels.find(SectionAddr + Index);
|
|
if (Iter1 != BBAddrMapLabels.end()) {
|
|
for (const auto &BBLabel : Iter1->second)
|
|
FOS << "<" << BBLabel.BlockLabel << ">" << BBLabel.PGOAnalysis
|
|
<< ":\n";
|
|
} else {
|
|
auto Iter2 = AllLabels.find(SectionAddr + Index);
|
|
if (Iter2 != AllLabels.end())
|
|
FOS << "<" << Iter2->second << ">:\n";
|
|
}
|
|
|
|
// Disassemble a real instruction or a data when disassemble all is
|
|
// provided
|
|
MCInst Inst;
|
|
ArrayRef<uint8_t> ThisBytes = Bytes.slice(Index);
|
|
uint64_t ThisAddr = SectionAddr + Index;
|
|
bool Disassembled = DT->DisAsm->getInstruction(
|
|
Inst, Size, ThisBytes, ThisAddr, CommentStream);
|
|
if (Size == 0)
|
|
Size = std::min<uint64_t>(
|
|
ThisBytes.size(),
|
|
DT->DisAsm->suggestBytesToSkip(ThisBytes, ThisAddr));
|
|
|
|
LVP.update({Index, Section.getIndex()},
|
|
{Index + Size, Section.getIndex()}, Index + Size != End);
|
|
|
|
DT->InstPrinter->setCommentStream(CommentStream);
|
|
|
|
DT->Printer->printInst(
|
|
*DT->InstPrinter, Disassembled ? &Inst : nullptr,
|
|
Bytes.slice(Index, Size),
|
|
{SectionAddr + Index + VMAAdjustment, Section.getIndex()}, FOS,
|
|
"", *DT->SubtargetInfo, &SP, Obj.getFileName(), &Rels, LVP);
|
|
|
|
DT->InstPrinter->setCommentStream(llvm::nulls());
|
|
|
|
// If disassembly succeeds, we try to resolve the target address
|
|
// (jump target or memory operand address) and print it to the
|
|
// right of the instruction.
|
|
//
|
|
// Otherwise, we don't print anything else so that we avoid
|
|
// analyzing invalid or incomplete instruction information.
|
|
if (Disassembled && DT->InstrAnalysis) {
|
|
llvm::raw_ostream *TargetOS = &FOS;
|
|
uint64_t Target;
|
|
bool PrintTarget = DT->InstrAnalysis->evaluateBranch(
|
|
Inst, SectionAddr + Index, Size, Target);
|
|
|
|
if (!PrintTarget) {
|
|
if (std::optional<uint64_t> MaybeTarget =
|
|
DT->InstrAnalysis->evaluateMemoryOperandAddress(
|
|
Inst, DT->SubtargetInfo.get(), SectionAddr + Index,
|
|
Size)) {
|
|
Target = *MaybeTarget;
|
|
PrintTarget = true;
|
|
// Do not print real address when symbolizing.
|
|
if (!SymbolizeOperands) {
|
|
// Memory operand addresses are printed as comments.
|
|
TargetOS = &CommentStream;
|
|
*TargetOS << "0x" << Twine::utohexstr(Target);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (PrintTarget) {
|
|
// In a relocatable object, the target's section must reside in
|
|
// the same section as the call instruction or it is accessed
|
|
// through a relocation.
|
|
//
|
|
// In a non-relocatable object, the target may be in any section.
|
|
// In that case, locate the section(s) containing the target
|
|
// address and find the symbol in one of those, if possible.
|
|
//
|
|
// N.B. Except for XCOFF, we don't walk the relocations in the
|
|
// relocatable case yet.
|
|
std::vector<const SectionSymbolsTy *> TargetSectionSymbols;
|
|
if (!Obj.isRelocatableObject()) {
|
|
auto It = llvm::partition_point(
|
|
SectionAddresses,
|
|
[=](const std::pair<uint64_t, SectionRef> &O) {
|
|
return O.first <= Target;
|
|
});
|
|
uint64_t TargetSecAddr = 0;
|
|
while (It != SectionAddresses.begin()) {
|
|
--It;
|
|
if (TargetSecAddr == 0)
|
|
TargetSecAddr = It->first;
|
|
if (It->first != TargetSecAddr)
|
|
break;
|
|
TargetSectionSymbols.push_back(&AllSymbols[It->second]);
|
|
}
|
|
} else {
|
|
TargetSectionSymbols.push_back(&Symbols);
|
|
}
|
|
TargetSectionSymbols.push_back(&AbsoluteSymbols);
|
|
|
|
// Find the last symbol in the first candidate section whose
|
|
// offset is less than or equal to the target. If there are no
|
|
// such symbols, try in the next section and so on, before finally
|
|
// using the nearest preceding absolute symbol (if any), if there
|
|
// are no other valid symbols.
|
|
const SymbolInfoTy *TargetSym = nullptr;
|
|
for (const SectionSymbolsTy *TargetSymbols :
|
|
TargetSectionSymbols) {
|
|
auto It = llvm::partition_point(
|
|
*TargetSymbols,
|
|
[=](const SymbolInfoTy &O) { return O.Addr <= Target; });
|
|
while (It != TargetSymbols->begin()) {
|
|
--It;
|
|
// Skip mapping symbols to avoid possible ambiguity as they
|
|
// do not allow uniquely identifying the target address.
|
|
if (!It->IsMappingSymbol) {
|
|
TargetSym = &*It;
|
|
break;
|
|
}
|
|
}
|
|
if (TargetSym)
|
|
break;
|
|
}
|
|
|
|
// Branch targets are printed just after the instructions.
|
|
// Print the labels corresponding to the target if there's any.
|
|
bool BBAddrMapLabelAvailable = BBAddrMapLabels.count(Target);
|
|
bool LabelAvailable = AllLabels.count(Target);
|
|
|
|
if (TargetSym != nullptr) {
|
|
uint64_t TargetAddress = TargetSym->Addr;
|
|
uint64_t Disp = Target - TargetAddress;
|
|
std::string TargetName = Demangle ? demangle(TargetSym->Name)
|
|
: TargetSym->Name.str();
|
|
bool RelFixedUp = false;
|
|
SmallString<32> Val;
|
|
|
|
*TargetOS << " <";
|
|
// On XCOFF, we use relocations, even without -r, so we
|
|
// can print the correct name for an extern function call.
|
|
if (Obj.isXCOFF() && findRel()) {
|
|
// Check for possible branch relocations and
|
|
// branches to fixup code.
|
|
bool BranchRelocationType = true;
|
|
XCOFF::RelocationType RelocType;
|
|
if (Obj.is64Bit()) {
|
|
const XCOFFRelocation64 *Reloc =
|
|
reinterpret_cast<XCOFFRelocation64 *>(
|
|
RelCur->getRawDataRefImpl().p);
|
|
RelFixedUp = Reloc->isFixupIndicated();
|
|
RelocType = Reloc->Type;
|
|
} else {
|
|
const XCOFFRelocation32 *Reloc =
|
|
reinterpret_cast<XCOFFRelocation32 *>(
|
|
RelCur->getRawDataRefImpl().p);
|
|
RelFixedUp = Reloc->isFixupIndicated();
|
|
RelocType = Reloc->Type;
|
|
}
|
|
BranchRelocationType =
|
|
RelocType == XCOFF::R_BA || RelocType == XCOFF::R_BR ||
|
|
RelocType == XCOFF::R_RBA || RelocType == XCOFF::R_RBR;
|
|
|
|
// If we have a valid relocation, try to print its
|
|
// corresponding symbol name. Multiple relocations on the
|
|
// same instruction are not handled.
|
|
// Branches to fixup code will have the RelFixedUp flag set in
|
|
// the RLD. For these instructions, we print the correct
|
|
// branch target, but print the referenced symbol as a
|
|
// comment.
|
|
if (Error E = getRelocationValueString(*RelCur, false, Val)) {
|
|
// If -r was used, this error will be printed later.
|
|
// Otherwise, we ignore the error and print what
|
|
// would have been printed without using relocations.
|
|
consumeError(std::move(E));
|
|
*TargetOS << TargetName;
|
|
RelFixedUp = false; // Suppress comment for RLD sym name
|
|
} else if (BranchRelocationType && !RelFixedUp)
|
|
*TargetOS << Val;
|
|
else
|
|
*TargetOS << TargetName;
|
|
if (Disp)
|
|
*TargetOS << "+0x" << Twine::utohexstr(Disp);
|
|
} else if (!Disp) {
|
|
*TargetOS << TargetName;
|
|
} else if (BBAddrMapLabelAvailable) {
|
|
*TargetOS << BBAddrMapLabels[Target].front().BlockLabel;
|
|
} else if (LabelAvailable) {
|
|
*TargetOS << AllLabels[Target];
|
|
} else {
|
|
// Always Print the binary symbol plus an offset if there's no
|
|
// local label corresponding to the target address.
|
|
*TargetOS << TargetName << "+0x" << Twine::utohexstr(Disp);
|
|
}
|
|
*TargetOS << ">";
|
|
if (RelFixedUp && !InlineRelocs) {
|
|
// We have fixup code for a relocation. We print the
|
|
// referenced symbol as a comment.
|
|
*TargetOS << "\t# " << Val;
|
|
}
|
|
|
|
} else if (BBAddrMapLabelAvailable) {
|
|
*TargetOS << " <" << BBAddrMapLabels[Target].front().BlockLabel
|
|
<< ">";
|
|
} else if (LabelAvailable) {
|
|
*TargetOS << " <" << AllLabels[Target] << ">";
|
|
}
|
|
// By convention, each record in the comment stream should be
|
|
// terminated.
|
|
if (TargetOS == &CommentStream)
|
|
*TargetOS << "\n";
|
|
}
|
|
|
|
DT->InstrAnalysis->updateState(Inst, SectionAddr + Index);
|
|
} else if (!Disassembled && DT->InstrAnalysis) {
|
|
DT->InstrAnalysis->resetState();
|
|
}
|
|
}
|
|
|
|
assert(DT->Context->getAsmInfo());
|
|
emitPostInstructionInfo(FOS, *DT->Context->getAsmInfo(),
|
|
*DT->SubtargetInfo, CommentStream.str(), LVP);
|
|
Comments.clear();
|
|
|
|
if (BTF)
|
|
printBTFRelocation(FOS, *BTF, {Index, Section.getIndex()}, LVP);
|
|
|
|
// Hexagon handles relocs in pretty printer
|
|
if (InlineRelocs && Obj.getArch() != Triple::hexagon) {
|
|
while (findRel()) {
|
|
// When --adjust-vma is used, update the address printed.
|
|
if (RelCur->getSymbol() != Obj.symbol_end()) {
|
|
Expected<section_iterator> SymSI =
|
|
RelCur->getSymbol()->getSection();
|
|
if (SymSI && *SymSI != Obj.section_end() &&
|
|
shouldAdjustVA(**SymSI))
|
|
RelOffset += AdjustVMA;
|
|
}
|
|
|
|
printRelocation(FOS, Obj.getFileName(), *RelCur,
|
|
SectionAddr + RelOffset, Is64Bits);
|
|
LVP.printAfterOtherLine(FOS, true);
|
|
++RelCur;
|
|
}
|
|
}
|
|
|
|
Index += Size;
|
|
}
|
|
}
|
|
}
|
|
StringSet<> MissingDisasmSymbolSet =
|
|
set_difference(DisasmSymbolSet, FoundDisasmSymbolSet);
|
|
for (StringRef Sym : MissingDisasmSymbolSet.keys())
|
|
reportWarning("failed to disassemble missing symbol " + Sym, FileName);
|
|
}
|
|
|
|
static void disassembleObject(ObjectFile *Obj, bool InlineRelocs) {
|
|
// If information useful for showing the disassembly is missing, try to find a
|
|
// more complete binary and disassemble that instead.
|
|
OwningBinary<Binary> FetchedBinary;
|
|
if (Obj->symbols().empty()) {
|
|
if (std::optional<OwningBinary<Binary>> FetchedBinaryOpt =
|
|
fetchBinaryByBuildID(*Obj)) {
|
|
if (auto *O = dyn_cast<ObjectFile>(FetchedBinaryOpt->getBinary())) {
|
|
if (!O->symbols().empty() ||
|
|
(!O->sections().empty() && Obj->sections().empty())) {
|
|
FetchedBinary = std::move(*FetchedBinaryOpt);
|
|
Obj = O;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
const Target *TheTarget = getTarget(Obj);
|
|
|
|
// Package up features to be passed to target/subtarget
|
|
Expected<SubtargetFeatures> FeaturesValue = Obj->getFeatures();
|
|
if (!FeaturesValue)
|
|
reportError(FeaturesValue.takeError(), Obj->getFileName());
|
|
SubtargetFeatures Features = *FeaturesValue;
|
|
if (!MAttrs.empty()) {
|
|
for (unsigned I = 0; I != MAttrs.size(); ++I)
|
|
Features.AddFeature(MAttrs[I]);
|
|
} else if (MCPU.empty() && Obj->makeTriple().isAArch64()) {
|
|
Features.AddFeature("+all");
|
|
}
|
|
|
|
if (MCPU.empty())
|
|
MCPU = Obj->tryGetCPUName().value_or("").str();
|
|
|
|
if (isArmElf(*Obj)) {
|
|
// When disassembling big-endian Arm ELF, the instruction endianness is
|
|
// determined in a complex way. In relocatable objects, AAELF32 mandates
|
|
// that instruction endianness matches the ELF file endianness; in
|
|
// executable images, that's true unless the file header has the EF_ARM_BE8
|
|
// flag, in which case instructions are little-endian regardless of data
|
|
// endianness.
|
|
//
|
|
// We must set the big-endian-instructions SubtargetFeature to make the
|
|
// disassembler read the instructions the right way round, and also tell
|
|
// our own prettyprinter to retrieve the encodings the same way to print in
|
|
// hex.
|
|
const auto *Elf32BE = dyn_cast<ELF32BEObjectFile>(Obj);
|
|
|
|
if (Elf32BE && (Elf32BE->isRelocatableObject() ||
|
|
!(Elf32BE->getPlatformFlags() & ELF::EF_ARM_BE8))) {
|
|
Features.AddFeature("+big-endian-instructions");
|
|
ARMPrettyPrinterInst.setInstructionEndianness(llvm::endianness::big);
|
|
} else {
|
|
ARMPrettyPrinterInst.setInstructionEndianness(llvm::endianness::little);
|
|
}
|
|
}
|
|
|
|
DisassemblerTarget PrimaryTarget(TheTarget, *Obj, TripleName, MCPU, Features);
|
|
|
|
// If we have an ARM object file, we need a second disassembler, because
|
|
// ARM CPUs have two different instruction sets: ARM mode, and Thumb mode.
|
|
// We use mapping symbols to switch between the two assemblers, where
|
|
// appropriate.
|
|
std::optional<DisassemblerTarget> SecondaryTarget;
|
|
|
|
if (isArmElf(*Obj)) {
|
|
if (!PrimaryTarget.SubtargetInfo->checkFeatures("+mclass")) {
|
|
if (PrimaryTarget.SubtargetInfo->checkFeatures("+thumb-mode"))
|
|
Features.AddFeature("-thumb-mode");
|
|
else
|
|
Features.AddFeature("+thumb-mode");
|
|
SecondaryTarget.emplace(PrimaryTarget, Features);
|
|
}
|
|
} else if (const auto *COFFObj = dyn_cast<COFFObjectFile>(Obj)) {
|
|
const chpe_metadata *CHPEMetadata = COFFObj->getCHPEMetadata();
|
|
if (CHPEMetadata && CHPEMetadata->CodeMapCount) {
|
|
// Set up x86_64 disassembler for ARM64EC binaries.
|
|
Triple X64Triple(TripleName);
|
|
X64Triple.setArch(Triple::ArchType::x86_64);
|
|
|
|
std::string Error;
|
|
const Target *X64Target =
|
|
TargetRegistry::lookupTarget("", X64Triple, Error);
|
|
if (X64Target) {
|
|
SubtargetFeatures X64Features;
|
|
SecondaryTarget.emplace(X64Target, *Obj, X64Triple.getTriple(), "",
|
|
X64Features);
|
|
} else {
|
|
reportWarning(Error, Obj->getFileName());
|
|
}
|
|
}
|
|
}
|
|
|
|
const ObjectFile *DbgObj = Obj;
|
|
if (!FetchedBinary.getBinary() && !Obj->hasDebugInfo()) {
|
|
if (std::optional<OwningBinary<Binary>> DebugBinaryOpt =
|
|
fetchBinaryByBuildID(*Obj)) {
|
|
if (auto *FetchedObj =
|
|
dyn_cast<const ObjectFile>(DebugBinaryOpt->getBinary())) {
|
|
if (FetchedObj->hasDebugInfo()) {
|
|
FetchedBinary = std::move(*DebugBinaryOpt);
|
|
DbgObj = FetchedObj;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
std::unique_ptr<object::Binary> DSYMBinary;
|
|
std::unique_ptr<MemoryBuffer> DSYMBuf;
|
|
if (!DbgObj->hasDebugInfo()) {
|
|
if (const MachOObjectFile *MachOOF = dyn_cast<MachOObjectFile>(&*Obj)) {
|
|
DbgObj = objdump::getMachODSymObject(MachOOF, Obj->getFileName(),
|
|
DSYMBinary, DSYMBuf);
|
|
if (!DbgObj)
|
|
return;
|
|
}
|
|
}
|
|
|
|
SourcePrinter SP(DbgObj, TheTarget->getName());
|
|
|
|
for (StringRef Opt : DisassemblerOptions)
|
|
if (!PrimaryTarget.InstPrinter->applyTargetSpecificCLOption(Opt))
|
|
reportError(Obj->getFileName(),
|
|
"Unrecognized disassembler option: " + Opt);
|
|
|
|
disassembleObject(*Obj, *DbgObj, PrimaryTarget, SecondaryTarget, SP,
|
|
InlineRelocs);
|
|
}
|
|
|
|
void Dumper::printRelocations() {
|
|
StringRef Fmt = O.getBytesInAddress() > 4 ? "%016" PRIx64 : "%08" PRIx64;
|
|
|
|
// Build a mapping from relocation target to a vector of relocation
|
|
// sections. Usually, there is an only one relocation section for
|
|
// each relocated section.
|
|
MapVector<SectionRef, std::vector<SectionRef>> SecToRelSec;
|
|
uint64_t Ndx;
|
|
for (const SectionRef &Section : ToolSectionFilter(O, &Ndx)) {
|
|
if (O.isELF() && (ELFSectionRef(Section).getFlags() & ELF::SHF_ALLOC))
|
|
continue;
|
|
if (Section.relocation_begin() == Section.relocation_end())
|
|
continue;
|
|
Expected<section_iterator> SecOrErr = Section.getRelocatedSection();
|
|
if (!SecOrErr)
|
|
reportError(O.getFileName(),
|
|
"section (" + Twine(Ndx) +
|
|
"): unable to get a relocation target: " +
|
|
toString(SecOrErr.takeError()));
|
|
SecToRelSec[**SecOrErr].push_back(Section);
|
|
}
|
|
|
|
for (std::pair<SectionRef, std::vector<SectionRef>> &P : SecToRelSec) {
|
|
StringRef SecName = unwrapOrError(P.first.getName(), O.getFileName());
|
|
outs() << "\nRELOCATION RECORDS FOR [" << SecName << "]:\n";
|
|
uint32_t OffsetPadding = (O.getBytesInAddress() > 4 ? 16 : 8);
|
|
uint32_t TypePadding = 24;
|
|
outs() << left_justify("OFFSET", OffsetPadding) << " "
|
|
<< left_justify("TYPE", TypePadding) << " "
|
|
<< "VALUE\n";
|
|
|
|
for (SectionRef Section : P.second) {
|
|
// CREL sections require decoding, each section may have its own specific
|
|
// decode problems.
|
|
if (O.isELF() && ELFSectionRef(Section).getType() == ELF::SHT_CREL) {
|
|
StringRef Err =
|
|
cast<const ELFObjectFileBase>(O).getCrelDecodeProblem(Section);
|
|
if (!Err.empty()) {
|
|
reportUniqueWarning(Err);
|
|
continue;
|
|
}
|
|
}
|
|
for (const RelocationRef &Reloc : Section.relocations()) {
|
|
uint64_t Address = Reloc.getOffset();
|
|
SmallString<32> RelocName;
|
|
SmallString<32> ValueStr;
|
|
if (Address < StartAddress || Address > StopAddress || getHidden(Reloc))
|
|
continue;
|
|
Reloc.getTypeName(RelocName);
|
|
if (Error E =
|
|
getRelocationValueString(Reloc, SymbolDescription, ValueStr))
|
|
reportUniqueWarning(std::move(E));
|
|
|
|
outs() << format(Fmt.data(), Address) << " "
|
|
<< left_justify(RelocName, TypePadding) << " " << ValueStr
|
|
<< "\n";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Returns true if we need to show LMA column when dumping section headers. We
|
|
// show it only when the platform is ELF and either we have at least one section
|
|
// whose VMA and LMA are different and/or when --show-lma flag is used.
|
|
static bool shouldDisplayLMA(const ObjectFile &Obj) {
|
|
if (!Obj.isELF())
|
|
return false;
|
|
for (const SectionRef &S : ToolSectionFilter(Obj))
|
|
if (S.getAddress() != getELFSectionLMA(S))
|
|
return true;
|
|
return ShowLMA;
|
|
}
|
|
|
|
static size_t getMaxSectionNameWidth(const ObjectFile &Obj) {
|
|
// Default column width for names is 13 even if no names are that long.
|
|
size_t MaxWidth = 13;
|
|
for (const SectionRef &Section : ToolSectionFilter(Obj)) {
|
|
StringRef Name = unwrapOrError(Section.getName(), Obj.getFileName());
|
|
MaxWidth = std::max(MaxWidth, Name.size());
|
|
}
|
|
return MaxWidth;
|
|
}
|
|
|
|
void objdump::printSectionHeaders(ObjectFile &Obj) {
|
|
if (Obj.isELF() && Obj.sections().empty())
|
|
createFakeELFSections(Obj);
|
|
|
|
size_t NameWidth = getMaxSectionNameWidth(Obj);
|
|
size_t AddressWidth = 2 * Obj.getBytesInAddress();
|
|
bool HasLMAColumn = shouldDisplayLMA(Obj);
|
|
outs() << "\nSections:\n";
|
|
if (HasLMAColumn)
|
|
outs() << "Idx " << left_justify("Name", NameWidth) << " Size "
|
|
<< left_justify("VMA", AddressWidth) << " "
|
|
<< left_justify("LMA", AddressWidth) << " Type\n";
|
|
else
|
|
outs() << "Idx " << left_justify("Name", NameWidth) << " Size "
|
|
<< left_justify("VMA", AddressWidth) << " Type\n";
|
|
|
|
uint64_t Idx;
|
|
for (const SectionRef &Section : ToolSectionFilter(Obj, &Idx)) {
|
|
StringRef Name = unwrapOrError(Section.getName(), Obj.getFileName());
|
|
uint64_t VMA = Section.getAddress();
|
|
if (shouldAdjustVA(Section))
|
|
VMA += AdjustVMA;
|
|
|
|
uint64_t Size = Section.getSize();
|
|
|
|
std::string Type = Section.isText() ? "TEXT" : "";
|
|
if (Section.isData())
|
|
Type += Type.empty() ? "DATA" : ", DATA";
|
|
if (Section.isBSS())
|
|
Type += Type.empty() ? "BSS" : ", BSS";
|
|
if (Section.isDebugSection())
|
|
Type += Type.empty() ? "DEBUG" : ", DEBUG";
|
|
|
|
if (HasLMAColumn)
|
|
outs() << format("%3" PRIu64 " %-*s %08" PRIx64 " ", Idx, NameWidth,
|
|
Name.str().c_str(), Size)
|
|
<< format_hex_no_prefix(VMA, AddressWidth) << " "
|
|
<< format_hex_no_prefix(getELFSectionLMA(Section), AddressWidth)
|
|
<< " " << Type << "\n";
|
|
else
|
|
outs() << format("%3" PRIu64 " %-*s %08" PRIx64 " ", Idx, NameWidth,
|
|
Name.str().c_str(), Size)
|
|
<< format_hex_no_prefix(VMA, AddressWidth) << " " << Type << "\n";
|
|
}
|
|
}
|
|
|
|
void objdump::printSectionContents(const ObjectFile *Obj) {
|
|
const MachOObjectFile *MachO = dyn_cast<const MachOObjectFile>(Obj);
|
|
|
|
for (const SectionRef &Section : ToolSectionFilter(*Obj)) {
|
|
StringRef Name = unwrapOrError(Section.getName(), Obj->getFileName());
|
|
uint64_t BaseAddr = Section.getAddress();
|
|
uint64_t Size = Section.getSize();
|
|
if (!Size)
|
|
continue;
|
|
|
|
outs() << "Contents of section ";
|
|
StringRef SegmentName = getSegmentName(MachO, Section);
|
|
if (!SegmentName.empty())
|
|
outs() << SegmentName << ",";
|
|
outs() << Name << ":\n";
|
|
if (Section.isBSS()) {
|
|
outs() << format("<skipping contents of bss section at [%04" PRIx64
|
|
", %04" PRIx64 ")>\n",
|
|
BaseAddr, BaseAddr + Size);
|
|
continue;
|
|
}
|
|
|
|
StringRef Contents = unwrapOrError(Section.getContents(), Obj->getFileName());
|
|
|
|
// Dump out the content as hex and printable ascii characters.
|
|
for (std::size_t Addr = 0, End = Contents.size(); Addr < End; Addr += 16) {
|
|
outs() << format(" %04" PRIx64 " ", BaseAddr + Addr);
|
|
// Dump line of hex.
|
|
for (std::size_t I = 0; I < 16; ++I) {
|
|
if (I != 0 && I % 4 == 0)
|
|
outs() << ' ';
|
|
if (Addr + I < End)
|
|
outs() << hexdigit((Contents[Addr + I] >> 4) & 0xF, true)
|
|
<< hexdigit(Contents[Addr + I] & 0xF, true);
|
|
else
|
|
outs() << " ";
|
|
}
|
|
// Print ascii.
|
|
outs() << " ";
|
|
for (std::size_t I = 0; I < 16 && Addr + I < End; ++I) {
|
|
if (isPrint(static_cast<unsigned char>(Contents[Addr + I]) & 0xFF))
|
|
outs() << Contents[Addr + I];
|
|
else
|
|
outs() << ".";
|
|
}
|
|
outs() << "\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
void Dumper::printSymbolTable(StringRef ArchiveName, StringRef ArchitectureName,
|
|
bool DumpDynamic) {
|
|
if (O.isCOFF() && !DumpDynamic) {
|
|
outs() << "\nSYMBOL TABLE:\n";
|
|
printCOFFSymbolTable(cast<const COFFObjectFile>(O));
|
|
return;
|
|
}
|
|
|
|
const StringRef FileName = O.getFileName();
|
|
|
|
if (!DumpDynamic) {
|
|
outs() << "\nSYMBOL TABLE:\n";
|
|
for (auto I = O.symbol_begin(); I != O.symbol_end(); ++I)
|
|
printSymbol(*I, {}, FileName, ArchiveName, ArchitectureName, DumpDynamic);
|
|
return;
|
|
}
|
|
|
|
outs() << "\nDYNAMIC SYMBOL TABLE:\n";
|
|
if (!O.isELF()) {
|
|
reportWarning(
|
|
"this operation is not currently supported for this file format",
|
|
FileName);
|
|
return;
|
|
}
|
|
|
|
const ELFObjectFileBase *ELF = cast<const ELFObjectFileBase>(&O);
|
|
auto Symbols = ELF->getDynamicSymbolIterators();
|
|
Expected<std::vector<VersionEntry>> SymbolVersionsOrErr =
|
|
ELF->readDynsymVersions();
|
|
if (!SymbolVersionsOrErr) {
|
|
reportWarning(toString(SymbolVersionsOrErr.takeError()), FileName);
|
|
SymbolVersionsOrErr = std::vector<VersionEntry>();
|
|
(void)!SymbolVersionsOrErr;
|
|
}
|
|
for (auto &Sym : Symbols)
|
|
printSymbol(Sym, *SymbolVersionsOrErr, FileName, ArchiveName,
|
|
ArchitectureName, DumpDynamic);
|
|
}
|
|
|
|
void Dumper::printSymbol(const SymbolRef &Symbol,
|
|
ArrayRef<VersionEntry> SymbolVersions,
|
|
StringRef FileName, StringRef ArchiveName,
|
|
StringRef ArchitectureName, bool DumpDynamic) {
|
|
const MachOObjectFile *MachO = dyn_cast<const MachOObjectFile>(&O);
|
|
Expected<uint64_t> AddrOrErr = Symbol.getAddress();
|
|
if (!AddrOrErr) {
|
|
reportUniqueWarning(AddrOrErr.takeError());
|
|
return;
|
|
}
|
|
|
|
// Don't ask a Mach-O STAB symbol for its section unless you know that
|
|
// STAB symbol's section field refers to a valid section index. Otherwise
|
|
// the symbol may error trying to load a section that does not exist.
|
|
bool IsSTAB = false;
|
|
if (MachO) {
|
|
DataRefImpl SymDRI = Symbol.getRawDataRefImpl();
|
|
uint8_t NType =
|
|
(MachO->is64Bit() ? MachO->getSymbol64TableEntry(SymDRI).n_type
|
|
: MachO->getSymbolTableEntry(SymDRI).n_type);
|
|
if (NType & MachO::N_STAB)
|
|
IsSTAB = true;
|
|
}
|
|
section_iterator Section = IsSTAB
|
|
? O.section_end()
|
|
: unwrapOrError(Symbol.getSection(), FileName,
|
|
ArchiveName, ArchitectureName);
|
|
|
|
uint64_t Address = *AddrOrErr;
|
|
if (Section != O.section_end() && shouldAdjustVA(*Section))
|
|
Address += AdjustVMA;
|
|
if ((Address < StartAddress) || (Address > StopAddress))
|
|
return;
|
|
SymbolRef::Type Type =
|
|
unwrapOrError(Symbol.getType(), FileName, ArchiveName, ArchitectureName);
|
|
uint32_t Flags =
|
|
unwrapOrError(Symbol.getFlags(), FileName, ArchiveName, ArchitectureName);
|
|
|
|
StringRef Name;
|
|
if (Type == SymbolRef::ST_Debug && Section != O.section_end()) {
|
|
if (Expected<StringRef> NameOrErr = Section->getName())
|
|
Name = *NameOrErr;
|
|
else
|
|
consumeError(NameOrErr.takeError());
|
|
|
|
} else {
|
|
Name = unwrapOrError(Symbol.getName(), FileName, ArchiveName,
|
|
ArchitectureName);
|
|
}
|
|
|
|
bool Global = Flags & SymbolRef::SF_Global;
|
|
bool Weak = Flags & SymbolRef::SF_Weak;
|
|
bool Absolute = Flags & SymbolRef::SF_Absolute;
|
|
bool Common = Flags & SymbolRef::SF_Common;
|
|
bool Hidden = Flags & SymbolRef::SF_Hidden;
|
|
|
|
char GlobLoc = ' ';
|
|
if ((Section != O.section_end() || Absolute) && !Weak)
|
|
GlobLoc = Global ? 'g' : 'l';
|
|
char IFunc = ' ';
|
|
if (O.isELF()) {
|
|
if (ELFSymbolRef(Symbol).getELFType() == ELF::STT_GNU_IFUNC)
|
|
IFunc = 'i';
|
|
if (ELFSymbolRef(Symbol).getBinding() == ELF::STB_GNU_UNIQUE)
|
|
GlobLoc = 'u';
|
|
}
|
|
|
|
char Debug = ' ';
|
|
if (DumpDynamic)
|
|
Debug = 'D';
|
|
else if (Type == SymbolRef::ST_Debug || Type == SymbolRef::ST_File)
|
|
Debug = 'd';
|
|
|
|
char FileFunc = ' ';
|
|
if (Type == SymbolRef::ST_File)
|
|
FileFunc = 'f';
|
|
else if (Type == SymbolRef::ST_Function)
|
|
FileFunc = 'F';
|
|
else if (Type == SymbolRef::ST_Data)
|
|
FileFunc = 'O';
|
|
|
|
const char *Fmt = O.getBytesInAddress() > 4 ? "%016" PRIx64 : "%08" PRIx64;
|
|
|
|
outs() << format(Fmt, Address) << " "
|
|
<< GlobLoc // Local -> 'l', Global -> 'g', Neither -> ' '
|
|
<< (Weak ? 'w' : ' ') // Weak?
|
|
<< ' ' // Constructor. Not supported yet.
|
|
<< ' ' // Warning. Not supported yet.
|
|
<< IFunc // Indirect reference to another symbol.
|
|
<< Debug // Debugging (d) or dynamic (D) symbol.
|
|
<< FileFunc // Name of function (F), file (f) or object (O).
|
|
<< ' ';
|
|
if (Absolute) {
|
|
outs() << "*ABS*";
|
|
} else if (Common) {
|
|
outs() << "*COM*";
|
|
} else if (Section == O.section_end()) {
|
|
if (O.isXCOFF()) {
|
|
XCOFFSymbolRef XCOFFSym = cast<const XCOFFObjectFile>(O).toSymbolRef(
|
|
Symbol.getRawDataRefImpl());
|
|
if (XCOFF::N_DEBUG == XCOFFSym.getSectionNumber())
|
|
outs() << "*DEBUG*";
|
|
else
|
|
outs() << "*UND*";
|
|
} else
|
|
outs() << "*UND*";
|
|
} else {
|
|
StringRef SegmentName = getSegmentName(MachO, *Section);
|
|
if (!SegmentName.empty())
|
|
outs() << SegmentName << ",";
|
|
StringRef SectionName = unwrapOrError(Section->getName(), FileName);
|
|
outs() << SectionName;
|
|
if (O.isXCOFF()) {
|
|
std::optional<SymbolRef> SymRef =
|
|
getXCOFFSymbolContainingSymbolRef(cast<XCOFFObjectFile>(O), Symbol);
|
|
if (SymRef) {
|
|
|
|
Expected<StringRef> NameOrErr = SymRef->getName();
|
|
|
|
if (NameOrErr) {
|
|
outs() << " (csect:";
|
|
std::string SymName =
|
|
Demangle ? demangle(*NameOrErr) : NameOrErr->str();
|
|
|
|
if (SymbolDescription)
|
|
SymName = getXCOFFSymbolDescription(createSymbolInfo(O, *SymRef),
|
|
SymName);
|
|
|
|
outs() << ' ' << SymName;
|
|
outs() << ") ";
|
|
} else
|
|
reportWarning(toString(NameOrErr.takeError()), FileName);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (Common)
|
|
outs() << '\t' << format(Fmt, static_cast<uint64_t>(Symbol.getAlignment()));
|
|
else if (O.isXCOFF())
|
|
outs() << '\t'
|
|
<< format(Fmt, cast<XCOFFObjectFile>(O).getSymbolSize(
|
|
Symbol.getRawDataRefImpl()));
|
|
else if (O.isELF())
|
|
outs() << '\t' << format(Fmt, ELFSymbolRef(Symbol).getSize());
|
|
else if (O.isWasm())
|
|
outs() << '\t'
|
|
<< format(Fmt, static_cast<uint64_t>(
|
|
cast<WasmObjectFile>(O).getSymbolSize(Symbol)));
|
|
|
|
if (O.isELF()) {
|
|
if (!SymbolVersions.empty()) {
|
|
const VersionEntry &Ver =
|
|
SymbolVersions[Symbol.getRawDataRefImpl().d.b - 1];
|
|
std::string Str;
|
|
if (!Ver.Name.empty())
|
|
Str = Ver.IsVerDef ? ' ' + Ver.Name : '(' + Ver.Name + ')';
|
|
outs() << ' ' << left_justify(Str, 12);
|
|
}
|
|
|
|
uint8_t Other = ELFSymbolRef(Symbol).getOther();
|
|
switch (Other) {
|
|
case ELF::STV_DEFAULT:
|
|
break;
|
|
case ELF::STV_INTERNAL:
|
|
outs() << " .internal";
|
|
break;
|
|
case ELF::STV_HIDDEN:
|
|
outs() << " .hidden";
|
|
break;
|
|
case ELF::STV_PROTECTED:
|
|
outs() << " .protected";
|
|
break;
|
|
default:
|
|
outs() << format(" 0x%02x", Other);
|
|
break;
|
|
}
|
|
} else if (Hidden) {
|
|
outs() << " .hidden";
|
|
}
|
|
|
|
std::string SymName = Demangle ? demangle(Name) : Name.str();
|
|
if (O.isXCOFF() && SymbolDescription)
|
|
SymName = getXCOFFSymbolDescription(createSymbolInfo(O, Symbol), SymName);
|
|
|
|
outs() << ' ' << SymName << '\n';
|
|
}
|
|
|
|
static void printUnwindInfo(const ObjectFile *O) {
|
|
outs() << "Unwind info:\n\n";
|
|
|
|
if (const COFFObjectFile *Coff = dyn_cast<COFFObjectFile>(O))
|
|
printCOFFUnwindInfo(Coff);
|
|
else if (const MachOObjectFile *MachO = dyn_cast<MachOObjectFile>(O))
|
|
printMachOUnwindInfo(MachO);
|
|
else
|
|
// TODO: Extract DWARF dump tool to objdump.
|
|
WithColor::error(errs(), ToolName)
|
|
<< "This operation is only currently supported "
|
|
"for COFF and MachO object files.\n";
|
|
}
|
|
|
|
/// Dump the raw contents of the __clangast section so the output can be piped
|
|
/// into llvm-bcanalyzer.
|
|
static void printRawClangAST(const ObjectFile *Obj) {
|
|
if (outs().is_displayed()) {
|
|
WithColor::error(errs(), ToolName)
|
|
<< "The -raw-clang-ast option will dump the raw binary contents of "
|
|
"the clang ast section.\n"
|
|
"Please redirect the output to a file or another program such as "
|
|
"llvm-bcanalyzer.\n";
|
|
return;
|
|
}
|
|
|
|
StringRef ClangASTSectionName("__clangast");
|
|
if (Obj->isCOFF()) {
|
|
ClangASTSectionName = "clangast";
|
|
}
|
|
|
|
std::optional<object::SectionRef> ClangASTSection;
|
|
for (auto Sec : ToolSectionFilter(*Obj)) {
|
|
StringRef Name;
|
|
if (Expected<StringRef> NameOrErr = Sec.getName())
|
|
Name = *NameOrErr;
|
|
else
|
|
consumeError(NameOrErr.takeError());
|
|
|
|
if (Name == ClangASTSectionName) {
|
|
ClangASTSection = Sec;
|
|
break;
|
|
}
|
|
}
|
|
if (!ClangASTSection)
|
|
return;
|
|
|
|
StringRef ClangASTContents =
|
|
unwrapOrError(ClangASTSection->getContents(), Obj->getFileName());
|
|
outs().write(ClangASTContents.data(), ClangASTContents.size());
|
|
}
|
|
|
|
static void printFaultMaps(const ObjectFile *Obj) {
|
|
StringRef FaultMapSectionName;
|
|
|
|
if (Obj->isELF()) {
|
|
FaultMapSectionName = ".llvm_faultmaps";
|
|
} else if (Obj->isMachO()) {
|
|
FaultMapSectionName = "__llvm_faultmaps";
|
|
} else {
|
|
WithColor::error(errs(), ToolName)
|
|
<< "This operation is only currently supported "
|
|
"for ELF and Mach-O executable files.\n";
|
|
return;
|
|
}
|
|
|
|
std::optional<object::SectionRef> FaultMapSection;
|
|
|
|
for (auto Sec : ToolSectionFilter(*Obj)) {
|
|
StringRef Name;
|
|
if (Expected<StringRef> NameOrErr = Sec.getName())
|
|
Name = *NameOrErr;
|
|
else
|
|
consumeError(NameOrErr.takeError());
|
|
|
|
if (Name == FaultMapSectionName) {
|
|
FaultMapSection = Sec;
|
|
break;
|
|
}
|
|
}
|
|
|
|
outs() << "FaultMap table:\n";
|
|
|
|
if (!FaultMapSection) {
|
|
outs() << "<not found>\n";
|
|
return;
|
|
}
|
|
|
|
StringRef FaultMapContents =
|
|
unwrapOrError(FaultMapSection->getContents(), Obj->getFileName());
|
|
FaultMapParser FMP(FaultMapContents.bytes_begin(),
|
|
FaultMapContents.bytes_end());
|
|
|
|
outs() << FMP;
|
|
}
|
|
|
|
void Dumper::printPrivateHeaders() {
|
|
reportError(O.getFileName(), "Invalid/Unsupported object file format");
|
|
}
|
|
|
|
static void printFileHeaders(const ObjectFile *O) {
|
|
if (!O->isELF() && !O->isCOFF() && !O->isXCOFF())
|
|
reportError(O->getFileName(), "Invalid/Unsupported object file format");
|
|
|
|
Triple::ArchType AT = O->getArch();
|
|
outs() << "architecture: " << Triple::getArchTypeName(AT) << "\n";
|
|
uint64_t Address = unwrapOrError(O->getStartAddress(), O->getFileName());
|
|
|
|
StringRef Fmt = O->getBytesInAddress() > 4 ? "%016" PRIx64 : "%08" PRIx64;
|
|
outs() << "start address: "
|
|
<< "0x" << format(Fmt.data(), Address) << "\n";
|
|
}
|
|
|
|
static void printArchiveChild(StringRef Filename, const Archive::Child &C) {
|
|
Expected<sys::fs::perms> ModeOrErr = C.getAccessMode();
|
|
if (!ModeOrErr) {
|
|
WithColor::error(errs(), ToolName) << "ill-formed archive entry.\n";
|
|
consumeError(ModeOrErr.takeError());
|
|
return;
|
|
}
|
|
sys::fs::perms Mode = ModeOrErr.get();
|
|
outs() << ((Mode & sys::fs::owner_read) ? "r" : "-");
|
|
outs() << ((Mode & sys::fs::owner_write) ? "w" : "-");
|
|
outs() << ((Mode & sys::fs::owner_exe) ? "x" : "-");
|
|
outs() << ((Mode & sys::fs::group_read) ? "r" : "-");
|
|
outs() << ((Mode & sys::fs::group_write) ? "w" : "-");
|
|
outs() << ((Mode & sys::fs::group_exe) ? "x" : "-");
|
|
outs() << ((Mode & sys::fs::others_read) ? "r" : "-");
|
|
outs() << ((Mode & sys::fs::others_write) ? "w" : "-");
|
|
outs() << ((Mode & sys::fs::others_exe) ? "x" : "-");
|
|
|
|
outs() << " ";
|
|
|
|
outs() << format("%d/%d %6" PRId64 " ", unwrapOrError(C.getUID(), Filename),
|
|
unwrapOrError(C.getGID(), Filename),
|
|
unwrapOrError(C.getRawSize(), Filename));
|
|
|
|
StringRef RawLastModified = C.getRawLastModified();
|
|
unsigned Seconds;
|
|
if (RawLastModified.getAsInteger(10, Seconds))
|
|
outs() << "(date: \"" << RawLastModified
|
|
<< "\" contains non-decimal chars) ";
|
|
else {
|
|
// Since ctime(3) returns a 26 character string of the form:
|
|
// "Sun Sep 16 01:03:52 1973\n\0"
|
|
// just print 24 characters.
|
|
time_t t = Seconds;
|
|
outs() << format("%.24s ", ctime(&t));
|
|
}
|
|
|
|
StringRef Name = "";
|
|
Expected<StringRef> NameOrErr = C.getName();
|
|
if (!NameOrErr) {
|
|
consumeError(NameOrErr.takeError());
|
|
Name = unwrapOrError(C.getRawName(), Filename);
|
|
} else {
|
|
Name = NameOrErr.get();
|
|
}
|
|
outs() << Name << "\n";
|
|
}
|
|
|
|
// For ELF only now.
|
|
static bool shouldWarnForInvalidStartStopAddress(ObjectFile *Obj) {
|
|
if (const auto *Elf = dyn_cast<ELFObjectFileBase>(Obj)) {
|
|
if (Elf->getEType() != ELF::ET_REL)
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static void checkForInvalidStartStopAddress(ObjectFile *Obj,
|
|
uint64_t Start, uint64_t Stop) {
|
|
if (!shouldWarnForInvalidStartStopAddress(Obj))
|
|
return;
|
|
|
|
for (const SectionRef &Section : Obj->sections())
|
|
if (ELFSectionRef(Section).getFlags() & ELF::SHF_ALLOC) {
|
|
uint64_t BaseAddr = Section.getAddress();
|
|
uint64_t Size = Section.getSize();
|
|
if ((Start < BaseAddr + Size) && Stop > BaseAddr)
|
|
return;
|
|
}
|
|
|
|
if (!HasStartAddressFlag)
|
|
reportWarning("no section has address less than 0x" +
|
|
Twine::utohexstr(Stop) + " specified by --stop-address",
|
|
Obj->getFileName());
|
|
else if (!HasStopAddressFlag)
|
|
reportWarning("no section has address greater than or equal to 0x" +
|
|
Twine::utohexstr(Start) + " specified by --start-address",
|
|
Obj->getFileName());
|
|
else
|
|
reportWarning("no section overlaps the range [0x" +
|
|
Twine::utohexstr(Start) + ",0x" + Twine::utohexstr(Stop) +
|
|
") specified by --start-address/--stop-address",
|
|
Obj->getFileName());
|
|
}
|
|
|
|
static void dumpObject(ObjectFile *O, const Archive *A = nullptr,
|
|
const Archive::Child *C = nullptr) {
|
|
Expected<std::unique_ptr<Dumper>> DumperOrErr = createDumper(*O);
|
|
if (!DumperOrErr) {
|
|
reportError(DumperOrErr.takeError(), O->getFileName(),
|
|
A ? A->getFileName() : "");
|
|
return;
|
|
}
|
|
Dumper &D = **DumperOrErr;
|
|
|
|
// Avoid other output when using a raw option.
|
|
if (!RawClangAST) {
|
|
outs() << '\n';
|
|
if (A)
|
|
outs() << A->getFileName() << "(" << O->getFileName() << ")";
|
|
else
|
|
outs() << O->getFileName();
|
|
outs() << ":\tfile format " << O->getFileFormatName().lower() << "\n";
|
|
}
|
|
|
|
if (HasStartAddressFlag || HasStopAddressFlag)
|
|
checkForInvalidStartStopAddress(O, StartAddress, StopAddress);
|
|
|
|
// TODO: Change print* free functions to Dumper member functions to utilitize
|
|
// stateful functions like reportUniqueWarning.
|
|
|
|
// Note: the order here matches GNU objdump for compatability.
|
|
StringRef ArchiveName = A ? A->getFileName() : "";
|
|
if (ArchiveHeaders && !MachOOpt && C)
|
|
printArchiveChild(ArchiveName, *C);
|
|
if (FileHeaders)
|
|
printFileHeaders(O);
|
|
if (PrivateHeaders || FirstPrivateHeader)
|
|
D.printPrivateHeaders();
|
|
if (SectionHeaders)
|
|
printSectionHeaders(*O);
|
|
if (SymbolTable)
|
|
D.printSymbolTable(ArchiveName);
|
|
if (DynamicSymbolTable)
|
|
D.printSymbolTable(ArchiveName, /*ArchitectureName=*/"",
|
|
/*DumpDynamic=*/true);
|
|
if (DwarfDumpType != DIDT_Null) {
|
|
std::unique_ptr<DIContext> DICtx = DWARFContext::create(*O);
|
|
// Dump the complete DWARF structure.
|
|
DIDumpOptions DumpOpts;
|
|
DumpOpts.DumpType = DwarfDumpType;
|
|
DICtx->dump(outs(), DumpOpts);
|
|
}
|
|
if (Relocations && !Disassemble)
|
|
D.printRelocations();
|
|
if (DynamicRelocations)
|
|
D.printDynamicRelocations();
|
|
if (SectionContents)
|
|
printSectionContents(O);
|
|
if (Disassemble)
|
|
disassembleObject(O, Relocations);
|
|
if (UnwindInfo)
|
|
printUnwindInfo(O);
|
|
|
|
// Mach-O specific options:
|
|
if (ExportsTrie)
|
|
printExportsTrie(O);
|
|
if (Rebase)
|
|
printRebaseTable(O);
|
|
if (Bind)
|
|
printBindTable(O);
|
|
if (LazyBind)
|
|
printLazyBindTable(O);
|
|
if (WeakBind)
|
|
printWeakBindTable(O);
|
|
|
|
// Other special sections:
|
|
if (RawClangAST)
|
|
printRawClangAST(O);
|
|
if (FaultMapSection)
|
|
printFaultMaps(O);
|
|
if (Offloading)
|
|
dumpOffloadBinary(*O);
|
|
}
|
|
|
|
static void dumpObject(const COFFImportFile *I, const Archive *A,
|
|
const Archive::Child *C = nullptr) {
|
|
StringRef ArchiveName = A ? A->getFileName() : "";
|
|
|
|
// Avoid other output when using a raw option.
|
|
if (!RawClangAST)
|
|
outs() << '\n'
|
|
<< ArchiveName << "(" << I->getFileName() << ")"
|
|
<< ":\tfile format COFF-import-file"
|
|
<< "\n\n";
|
|
|
|
if (ArchiveHeaders && !MachOOpt && C)
|
|
printArchiveChild(ArchiveName, *C);
|
|
if (SymbolTable)
|
|
printCOFFSymbolTable(*I);
|
|
}
|
|
|
|
/// Dump each object file in \a a;
|
|
static void dumpArchive(const Archive *A) {
|
|
Error Err = Error::success();
|
|
unsigned I = -1;
|
|
for (auto &C : A->children(Err)) {
|
|
++I;
|
|
Expected<std::unique_ptr<Binary>> ChildOrErr = C.getAsBinary();
|
|
if (!ChildOrErr) {
|
|
if (auto E = isNotObjectErrorInvalidFileType(ChildOrErr.takeError()))
|
|
reportError(std::move(E), getFileNameForError(C, I), A->getFileName());
|
|
continue;
|
|
}
|
|
if (ObjectFile *O = dyn_cast<ObjectFile>(&*ChildOrErr.get()))
|
|
dumpObject(O, A, &C);
|
|
else if (COFFImportFile *I = dyn_cast<COFFImportFile>(&*ChildOrErr.get()))
|
|
dumpObject(I, A, &C);
|
|
else
|
|
reportError(errorCodeToError(object_error::invalid_file_type),
|
|
A->getFileName());
|
|
}
|
|
if (Err)
|
|
reportError(std::move(Err), A->getFileName());
|
|
}
|
|
|
|
/// Open file and figure out how to dump it.
|
|
static void dumpInput(StringRef file) {
|
|
// If we are using the Mach-O specific object file parser, then let it parse
|
|
// the file and process the command line options. So the -arch flags can
|
|
// be used to select specific slices, etc.
|
|
if (MachOOpt) {
|
|
parseInputMachO(file);
|
|
return;
|
|
}
|
|
|
|
// Attempt to open the binary.
|
|
OwningBinary<Binary> OBinary = unwrapOrError(createBinary(file), file);
|
|
Binary &Binary = *OBinary.getBinary();
|
|
|
|
if (Archive *A = dyn_cast<Archive>(&Binary))
|
|
dumpArchive(A);
|
|
else if (ObjectFile *O = dyn_cast<ObjectFile>(&Binary))
|
|
dumpObject(O);
|
|
else if (MachOUniversalBinary *UB = dyn_cast<MachOUniversalBinary>(&Binary))
|
|
parseInputMachO(UB);
|
|
else if (OffloadBinary *OB = dyn_cast<OffloadBinary>(&Binary))
|
|
dumpOffloadSections(*OB);
|
|
else
|
|
reportError(errorCodeToError(object_error::invalid_file_type), file);
|
|
}
|
|
|
|
template <typename T>
|
|
static void parseIntArg(const llvm::opt::InputArgList &InputArgs, int ID,
|
|
T &Value) {
|
|
if (const opt::Arg *A = InputArgs.getLastArg(ID)) {
|
|
StringRef V(A->getValue());
|
|
if (!llvm::to_integer(V, Value, 0)) {
|
|
reportCmdLineError(A->getSpelling() +
|
|
": expected a non-negative integer, but got '" + V +
|
|
"'");
|
|
}
|
|
}
|
|
}
|
|
|
|
static object::BuildID parseBuildIDArg(const opt::Arg *A) {
|
|
StringRef V(A->getValue());
|
|
object::BuildID BID = parseBuildID(V);
|
|
if (BID.empty())
|
|
reportCmdLineError(A->getSpelling() + ": expected a build ID, but got '" +
|
|
V + "'");
|
|
return BID;
|
|
}
|
|
|
|
void objdump::invalidArgValue(const opt::Arg *A) {
|
|
reportCmdLineError("'" + StringRef(A->getValue()) +
|
|
"' is not a valid value for '" + A->getSpelling() + "'");
|
|
}
|
|
|
|
static std::vector<std::string>
|
|
commaSeparatedValues(const llvm::opt::InputArgList &InputArgs, int ID) {
|
|
std::vector<std::string> Values;
|
|
for (StringRef Value : InputArgs.getAllArgValues(ID)) {
|
|
llvm::SmallVector<StringRef, 2> SplitValues;
|
|
llvm::SplitString(Value, SplitValues, ",");
|
|
for (StringRef SplitValue : SplitValues)
|
|
Values.push_back(SplitValue.str());
|
|
}
|
|
return Values;
|
|
}
|
|
|
|
static void parseOtoolOptions(const llvm::opt::InputArgList &InputArgs) {
|
|
MachOOpt = true;
|
|
FullLeadingAddr = true;
|
|
PrintImmHex = true;
|
|
|
|
ArchName = InputArgs.getLastArgValue(OTOOL_arch).str();
|
|
LinkOptHints = InputArgs.hasArg(OTOOL_C);
|
|
if (InputArgs.hasArg(OTOOL_d))
|
|
FilterSections.push_back("__DATA,__data");
|
|
DylibId = InputArgs.hasArg(OTOOL_D);
|
|
UniversalHeaders = InputArgs.hasArg(OTOOL_f);
|
|
DataInCode = InputArgs.hasArg(OTOOL_G);
|
|
FirstPrivateHeader = InputArgs.hasArg(OTOOL_h);
|
|
IndirectSymbols = InputArgs.hasArg(OTOOL_I);
|
|
ShowRawInsn = InputArgs.hasArg(OTOOL_j);
|
|
PrivateHeaders = InputArgs.hasArg(OTOOL_l);
|
|
DylibsUsed = InputArgs.hasArg(OTOOL_L);
|
|
MCPU = InputArgs.getLastArgValue(OTOOL_mcpu_EQ).str();
|
|
ObjcMetaData = InputArgs.hasArg(OTOOL_o);
|
|
DisSymName = InputArgs.getLastArgValue(OTOOL_p).str();
|
|
InfoPlist = InputArgs.hasArg(OTOOL_P);
|
|
Relocations = InputArgs.hasArg(OTOOL_r);
|
|
if (const Arg *A = InputArgs.getLastArg(OTOOL_s)) {
|
|
auto Filter = (A->getValue(0) + StringRef(",") + A->getValue(1)).str();
|
|
FilterSections.push_back(Filter);
|
|
}
|
|
if (InputArgs.hasArg(OTOOL_t))
|
|
FilterSections.push_back("__TEXT,__text");
|
|
Verbose = InputArgs.hasArg(OTOOL_v) || InputArgs.hasArg(OTOOL_V) ||
|
|
InputArgs.hasArg(OTOOL_o);
|
|
SymbolicOperands = InputArgs.hasArg(OTOOL_V);
|
|
if (InputArgs.hasArg(OTOOL_x))
|
|
FilterSections.push_back(",__text");
|
|
LeadingAddr = LeadingHeaders = !InputArgs.hasArg(OTOOL_X);
|
|
|
|
ChainedFixups = InputArgs.hasArg(OTOOL_chained_fixups);
|
|
DyldInfo = InputArgs.hasArg(OTOOL_dyld_info);
|
|
|
|
InputFilenames = InputArgs.getAllArgValues(OTOOL_INPUT);
|
|
if (InputFilenames.empty())
|
|
reportCmdLineError("no input file");
|
|
|
|
for (const Arg *A : InputArgs) {
|
|
const Option &O = A->getOption();
|
|
if (O.getGroup().isValid() && O.getGroup().getID() == OTOOL_grp_obsolete) {
|
|
reportCmdLineWarning(O.getPrefixedName() +
|
|
" is obsolete and not implemented");
|
|
}
|
|
}
|
|
}
|
|
|
|
static void parseObjdumpOptions(const llvm::opt::InputArgList &InputArgs) {
|
|
parseIntArg(InputArgs, OBJDUMP_adjust_vma_EQ, AdjustVMA);
|
|
AllHeaders = InputArgs.hasArg(OBJDUMP_all_headers);
|
|
ArchName = InputArgs.getLastArgValue(OBJDUMP_arch_name_EQ).str();
|
|
ArchiveHeaders = InputArgs.hasArg(OBJDUMP_archive_headers);
|
|
Demangle = InputArgs.hasArg(OBJDUMP_demangle);
|
|
Disassemble = InputArgs.hasArg(OBJDUMP_disassemble);
|
|
DisassembleAll = InputArgs.hasArg(OBJDUMP_disassemble_all);
|
|
SymbolDescription = InputArgs.hasArg(OBJDUMP_symbol_description);
|
|
TracebackTable = InputArgs.hasArg(OBJDUMP_traceback_table);
|
|
DisassembleSymbols =
|
|
commaSeparatedValues(InputArgs, OBJDUMP_disassemble_symbols_EQ);
|
|
DisassembleZeroes = InputArgs.hasArg(OBJDUMP_disassemble_zeroes);
|
|
if (const opt::Arg *A = InputArgs.getLastArg(OBJDUMP_dwarf_EQ)) {
|
|
DwarfDumpType = StringSwitch<DIDumpType>(A->getValue())
|
|
.Case("frames", DIDT_DebugFrame)
|
|
.Default(DIDT_Null);
|
|
if (DwarfDumpType == DIDT_Null)
|
|
invalidArgValue(A);
|
|
}
|
|
DynamicRelocations = InputArgs.hasArg(OBJDUMP_dynamic_reloc);
|
|
FaultMapSection = InputArgs.hasArg(OBJDUMP_fault_map_section);
|
|
Offloading = InputArgs.hasArg(OBJDUMP_offloading);
|
|
FileHeaders = InputArgs.hasArg(OBJDUMP_file_headers);
|
|
SectionContents = InputArgs.hasArg(OBJDUMP_full_contents);
|
|
PrintLines = InputArgs.hasArg(OBJDUMP_line_numbers);
|
|
InputFilenames = InputArgs.getAllArgValues(OBJDUMP_INPUT);
|
|
MachOOpt = InputArgs.hasArg(OBJDUMP_macho);
|
|
MCPU = InputArgs.getLastArgValue(OBJDUMP_mcpu_EQ).str();
|
|
MAttrs = commaSeparatedValues(InputArgs, OBJDUMP_mattr_EQ);
|
|
ShowRawInsn = !InputArgs.hasArg(OBJDUMP_no_show_raw_insn);
|
|
LeadingAddr = !InputArgs.hasArg(OBJDUMP_no_leading_addr);
|
|
RawClangAST = InputArgs.hasArg(OBJDUMP_raw_clang_ast);
|
|
Relocations = InputArgs.hasArg(OBJDUMP_reloc);
|
|
PrintImmHex =
|
|
InputArgs.hasFlag(OBJDUMP_print_imm_hex, OBJDUMP_no_print_imm_hex, true);
|
|
PrivateHeaders = InputArgs.hasArg(OBJDUMP_private_headers);
|
|
FilterSections = InputArgs.getAllArgValues(OBJDUMP_section_EQ);
|
|
SectionHeaders = InputArgs.hasArg(OBJDUMP_section_headers);
|
|
ShowAllSymbols = InputArgs.hasArg(OBJDUMP_show_all_symbols);
|
|
ShowLMA = InputArgs.hasArg(OBJDUMP_show_lma);
|
|
PrintSource = InputArgs.hasArg(OBJDUMP_source);
|
|
parseIntArg(InputArgs, OBJDUMP_start_address_EQ, StartAddress);
|
|
HasStartAddressFlag = InputArgs.hasArg(OBJDUMP_start_address_EQ);
|
|
parseIntArg(InputArgs, OBJDUMP_stop_address_EQ, StopAddress);
|
|
HasStopAddressFlag = InputArgs.hasArg(OBJDUMP_stop_address_EQ);
|
|
SymbolTable = InputArgs.hasArg(OBJDUMP_syms);
|
|
SymbolizeOperands = InputArgs.hasArg(OBJDUMP_symbolize_operands);
|
|
PrettyPGOAnalysisMap = InputArgs.hasArg(OBJDUMP_pretty_pgo_analysis_map);
|
|
if (PrettyPGOAnalysisMap && !SymbolizeOperands)
|
|
reportCmdLineWarning("--symbolize-operands must be enabled for "
|
|
"--pretty-pgo-analysis-map to have an effect");
|
|
DynamicSymbolTable = InputArgs.hasArg(OBJDUMP_dynamic_syms);
|
|
TripleName = InputArgs.getLastArgValue(OBJDUMP_triple_EQ).str();
|
|
UnwindInfo = InputArgs.hasArg(OBJDUMP_unwind_info);
|
|
Wide = InputArgs.hasArg(OBJDUMP_wide);
|
|
Prefix = InputArgs.getLastArgValue(OBJDUMP_prefix).str();
|
|
parseIntArg(InputArgs, OBJDUMP_prefix_strip, PrefixStrip);
|
|
if (const opt::Arg *A = InputArgs.getLastArg(OBJDUMP_debug_vars_EQ)) {
|
|
DbgVariables = StringSwitch<DebugVarsFormat>(A->getValue())
|
|
.Case("ascii", DVASCII)
|
|
.Case("unicode", DVUnicode)
|
|
.Default(DVInvalid);
|
|
if (DbgVariables == DVInvalid)
|
|
invalidArgValue(A);
|
|
}
|
|
if (const opt::Arg *A = InputArgs.getLastArg(OBJDUMP_disassembler_color_EQ)) {
|
|
DisassemblyColor = StringSwitch<ColorOutput>(A->getValue())
|
|
.Case("on", ColorOutput::Enable)
|
|
.Case("off", ColorOutput::Disable)
|
|
.Case("terminal", ColorOutput::Auto)
|
|
.Default(ColorOutput::Invalid);
|
|
if (DisassemblyColor == ColorOutput::Invalid)
|
|
invalidArgValue(A);
|
|
}
|
|
|
|
parseIntArg(InputArgs, OBJDUMP_debug_vars_indent_EQ, DbgIndent);
|
|
|
|
parseMachOOptions(InputArgs);
|
|
|
|
// Parse -M (--disassembler-options) and deprecated
|
|
// --x86-asm-syntax={att,intel}.
|
|
//
|
|
// Note, for x86, the asm dialect (AssemblerDialect) is initialized when the
|
|
// MCAsmInfo is constructed. MCInstPrinter::applyTargetSpecificCLOption is
|
|
// called too late. For now we have to use the internal cl::opt option.
|
|
const char *AsmSyntax = nullptr;
|
|
for (const auto *A : InputArgs.filtered(OBJDUMP_disassembler_options_EQ,
|
|
OBJDUMP_x86_asm_syntax_att,
|
|
OBJDUMP_x86_asm_syntax_intel)) {
|
|
switch (A->getOption().getID()) {
|
|
case OBJDUMP_x86_asm_syntax_att:
|
|
AsmSyntax = "--x86-asm-syntax=att";
|
|
continue;
|
|
case OBJDUMP_x86_asm_syntax_intel:
|
|
AsmSyntax = "--x86-asm-syntax=intel";
|
|
continue;
|
|
}
|
|
|
|
SmallVector<StringRef, 2> Values;
|
|
llvm::SplitString(A->getValue(), Values, ",");
|
|
for (StringRef V : Values) {
|
|
if (V == "att")
|
|
AsmSyntax = "--x86-asm-syntax=att";
|
|
else if (V == "intel")
|
|
AsmSyntax = "--x86-asm-syntax=intel";
|
|
else
|
|
DisassemblerOptions.push_back(V.str());
|
|
}
|
|
}
|
|
SmallVector<const char *> Args = {"llvm-objdump"};
|
|
for (const opt::Arg *A : InputArgs.filtered(OBJDUMP_mllvm))
|
|
Args.push_back(A->getValue());
|
|
if (AsmSyntax)
|
|
Args.push_back(AsmSyntax);
|
|
if (Args.size() > 1)
|
|
llvm::cl::ParseCommandLineOptions(Args.size(), Args.data());
|
|
|
|
// Look up any provided build IDs, then append them to the input filenames.
|
|
for (const opt::Arg *A : InputArgs.filtered(OBJDUMP_build_id)) {
|
|
object::BuildID BuildID = parseBuildIDArg(A);
|
|
std::optional<std::string> Path = BIDFetcher->fetch(BuildID);
|
|
if (!Path) {
|
|
reportCmdLineError(A->getSpelling() + ": could not find build ID '" +
|
|
A->getValue() + "'");
|
|
}
|
|
InputFilenames.push_back(std::move(*Path));
|
|
}
|
|
|
|
// objdump defaults to a.out if no filenames specified.
|
|
if (InputFilenames.empty())
|
|
InputFilenames.push_back("a.out");
|
|
}
|
|
|
|
int llvm_objdump_main(int argc, char **argv, const llvm::ToolContext &) {
|
|
using namespace llvm;
|
|
|
|
ToolName = argv[0];
|
|
std::unique_ptr<CommonOptTable> T;
|
|
OptSpecifier Unknown, HelpFlag, HelpHiddenFlag, VersionFlag;
|
|
|
|
StringRef Stem = sys::path::stem(ToolName);
|
|
auto Is = [=](StringRef Tool) {
|
|
// We need to recognize the following filenames:
|
|
//
|
|
// llvm-objdump -> objdump
|
|
// llvm-otool-10.exe -> otool
|
|
// powerpc64-unknown-freebsd13-objdump -> objdump
|
|
auto I = Stem.rfind_insensitive(Tool);
|
|
return I != StringRef::npos &&
|
|
(I + Tool.size() == Stem.size() || !isAlnum(Stem[I + Tool.size()]));
|
|
};
|
|
if (Is("otool")) {
|
|
T = std::make_unique<OtoolOptTable>();
|
|
Unknown = OTOOL_UNKNOWN;
|
|
HelpFlag = OTOOL_help;
|
|
HelpHiddenFlag = OTOOL_help_hidden;
|
|
VersionFlag = OTOOL_version;
|
|
} else {
|
|
T = std::make_unique<ObjdumpOptTable>();
|
|
Unknown = OBJDUMP_UNKNOWN;
|
|
HelpFlag = OBJDUMP_help;
|
|
HelpHiddenFlag = OBJDUMP_help_hidden;
|
|
VersionFlag = OBJDUMP_version;
|
|
}
|
|
|
|
BumpPtrAllocator A;
|
|
StringSaver Saver(A);
|
|
opt::InputArgList InputArgs =
|
|
T->parseArgs(argc, argv, Unknown, Saver,
|
|
[&](StringRef Msg) { reportCmdLineError(Msg); });
|
|
|
|
if (InputArgs.size() == 0 || InputArgs.hasArg(HelpFlag)) {
|
|
T->printHelp(ToolName);
|
|
return 0;
|
|
}
|
|
if (InputArgs.hasArg(HelpHiddenFlag)) {
|
|
T->printHelp(ToolName, /*ShowHidden=*/true);
|
|
return 0;
|
|
}
|
|
|
|
// Initialize targets and assembly printers/parsers.
|
|
InitializeAllTargetInfos();
|
|
InitializeAllTargetMCs();
|
|
InitializeAllDisassemblers();
|
|
|
|
if (InputArgs.hasArg(VersionFlag)) {
|
|
cl::PrintVersionMessage();
|
|
if (!Is("otool")) {
|
|
outs() << '\n';
|
|
TargetRegistry::printRegisteredTargetsForVersion(outs());
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Initialize debuginfod.
|
|
const bool ShouldUseDebuginfodByDefault =
|
|
InputArgs.hasArg(OBJDUMP_build_id) || canUseDebuginfod();
|
|
std::vector<std::string> DebugFileDirectories =
|
|
InputArgs.getAllArgValues(OBJDUMP_debug_file_directory);
|
|
if (InputArgs.hasFlag(OBJDUMP_debuginfod, OBJDUMP_no_debuginfod,
|
|
ShouldUseDebuginfodByDefault)) {
|
|
HTTPClient::initialize();
|
|
BIDFetcher =
|
|
std::make_unique<DebuginfodFetcher>(std::move(DebugFileDirectories));
|
|
} else {
|
|
BIDFetcher =
|
|
std::make_unique<BuildIDFetcher>(std::move(DebugFileDirectories));
|
|
}
|
|
|
|
if (Is("otool"))
|
|
parseOtoolOptions(InputArgs);
|
|
else
|
|
parseObjdumpOptions(InputArgs);
|
|
|
|
if (StartAddress >= StopAddress)
|
|
reportCmdLineError("start address should be less than stop address");
|
|
|
|
// Removes trailing separators from prefix.
|
|
while (!Prefix.empty() && sys::path::is_separator(Prefix.back()))
|
|
Prefix.pop_back();
|
|
|
|
if (AllHeaders)
|
|
ArchiveHeaders = FileHeaders = PrivateHeaders = Relocations =
|
|
SectionHeaders = SymbolTable = true;
|
|
|
|
if (DisassembleAll || PrintSource || PrintLines || TracebackTable ||
|
|
!DisassembleSymbols.empty())
|
|
Disassemble = true;
|
|
|
|
if (!ArchiveHeaders && !Disassemble && DwarfDumpType == DIDT_Null &&
|
|
!DynamicRelocations && !FileHeaders && !PrivateHeaders && !RawClangAST &&
|
|
!Relocations && !SectionHeaders && !SectionContents && !SymbolTable &&
|
|
!DynamicSymbolTable && !UnwindInfo && !FaultMapSection && !Offloading &&
|
|
!(MachOOpt &&
|
|
(Bind || DataInCode || ChainedFixups || DyldInfo || DylibId ||
|
|
DylibsUsed || ExportsTrie || FirstPrivateHeader ||
|
|
FunctionStartsType != FunctionStartsMode::None || IndirectSymbols ||
|
|
InfoPlist || LazyBind || LinkOptHints || ObjcMetaData || Rebase ||
|
|
Rpaths || UniversalHeaders || WeakBind || !FilterSections.empty()))) {
|
|
T->printHelp(ToolName);
|
|
return 2;
|
|
}
|
|
|
|
DisasmSymbolSet.insert(DisassembleSymbols.begin(), DisassembleSymbols.end());
|
|
|
|
llvm::for_each(InputFilenames, dumpInput);
|
|
|
|
warnOnNoMatchForSections();
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|