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https://github.com/RPCS3/llvm-mirror.git
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ed2e21ce3f
I just hard core goofed when I wrote this and created a different name for no good reason. I'm failry aware of most "fresh" users of llvm-objcopy (that is, users which are not using it as a drop in replacement for GNU objcopy) and can say that only "-j" is being used by such people so this patch should strictly increase compatibility and not remove it. Differential Revision: https://reviews.llvm.org/D52180 llvm-svn: 348446
457 lines
17 KiB
C++
457 lines
17 KiB
C++
//===- CopyConfig.cpp -----------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "CopyConfig.h"
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#include "llvm-objcopy.h"
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#include "llvm/ADT/BitmaskEnum.h"
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#include "llvm/ADT/Optional.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Object/ELFTypes.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/Support/CommandLine.h"
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#include "llvm/Support/Compression.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include <memory>
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#include <string>
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namespace llvm {
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namespace objcopy {
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namespace {
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enum ObjcopyID {
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OBJCOPY_INVALID = 0, // This is not an option ID.
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#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
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HELPTEXT, METAVAR, VALUES) \
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OBJCOPY_##ID,
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#include "ObjcopyOpts.inc"
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#undef OPTION
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};
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#define PREFIX(NAME, VALUE) const char *const OBJCOPY_##NAME[] = VALUE;
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#include "ObjcopyOpts.inc"
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#undef PREFIX
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static const opt::OptTable::Info ObjcopyInfoTable[] = {
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#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
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HELPTEXT, METAVAR, VALUES) \
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{OBJCOPY_##PREFIX, \
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NAME, \
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HELPTEXT, \
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METAVAR, \
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OBJCOPY_##ID, \
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opt::Option::KIND##Class, \
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PARAM, \
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FLAGS, \
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OBJCOPY_##GROUP, \
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OBJCOPY_##ALIAS, \
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ALIASARGS, \
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VALUES},
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#include "ObjcopyOpts.inc"
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#undef OPTION
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};
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class ObjcopyOptTable : public opt::OptTable {
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public:
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ObjcopyOptTable() : OptTable(ObjcopyInfoTable) {}
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};
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enum StripID {
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STRIP_INVALID = 0, // This is not an option ID.
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#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
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HELPTEXT, METAVAR, VALUES) \
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STRIP_##ID,
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#include "StripOpts.inc"
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#undef OPTION
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};
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#define PREFIX(NAME, VALUE) const char *const STRIP_##NAME[] = VALUE;
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#include "StripOpts.inc"
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#undef PREFIX
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static const opt::OptTable::Info StripInfoTable[] = {
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#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
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HELPTEXT, METAVAR, VALUES) \
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{STRIP_##PREFIX, NAME, HELPTEXT, \
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METAVAR, STRIP_##ID, opt::Option::KIND##Class, \
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PARAM, FLAGS, STRIP_##GROUP, \
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STRIP_##ALIAS, ALIASARGS, VALUES},
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#include "StripOpts.inc"
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#undef OPTION
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};
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class StripOptTable : public opt::OptTable {
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public:
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StripOptTable() : OptTable(StripInfoTable) {}
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};
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enum SectionFlag {
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SecNone = 0,
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SecAlloc = 1 << 0,
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SecLoad = 1 << 1,
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SecNoload = 1 << 2,
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SecReadonly = 1 << 3,
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SecDebug = 1 << 4,
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SecCode = 1 << 5,
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SecData = 1 << 6,
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SecRom = 1 << 7,
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SecMerge = 1 << 8,
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SecStrings = 1 << 9,
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SecContents = 1 << 10,
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SecShare = 1 << 11,
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LLVM_MARK_AS_BITMASK_ENUM(/* LargestValue = */ SecShare)
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};
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} // namespace
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static SectionFlag parseSectionRenameFlag(StringRef SectionName) {
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return llvm::StringSwitch<SectionFlag>(SectionName)
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.Case("alloc", SectionFlag::SecAlloc)
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.Case("load", SectionFlag::SecLoad)
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.Case("noload", SectionFlag::SecNoload)
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.Case("readonly", SectionFlag::SecReadonly)
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.Case("debug", SectionFlag::SecDebug)
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.Case("code", SectionFlag::SecCode)
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.Case("data", SectionFlag::SecData)
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.Case("rom", SectionFlag::SecRom)
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.Case("merge", SectionFlag::SecMerge)
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.Case("strings", SectionFlag::SecStrings)
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.Case("contents", SectionFlag::SecContents)
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.Case("share", SectionFlag::SecShare)
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.Default(SectionFlag::SecNone);
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}
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static SectionRename parseRenameSectionValue(StringRef FlagValue) {
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if (!FlagValue.contains('='))
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error("Bad format for --rename-section: missing '='");
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// Initial split: ".foo" = ".bar,f1,f2,..."
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auto Old2New = FlagValue.split('=');
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SectionRename SR;
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SR.OriginalName = Old2New.first;
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// Flags split: ".bar" "f1" "f2" ...
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SmallVector<StringRef, 6> NameAndFlags;
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Old2New.second.split(NameAndFlags, ',');
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SR.NewName = NameAndFlags[0];
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if (NameAndFlags.size() > 1) {
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SectionFlag Flags = SectionFlag::SecNone;
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for (size_t I = 1, Size = NameAndFlags.size(); I < Size; ++I) {
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SectionFlag Flag = parseSectionRenameFlag(NameAndFlags[I]);
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if (Flag == SectionFlag::SecNone)
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error("Unrecognized section flag '" + NameAndFlags[I] +
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"'. Flags supported for GNU compatibility: alloc, load, noload, "
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"readonly, debug, code, data, rom, share, contents, merge, "
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"strings.");
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Flags |= Flag;
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}
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SR.NewFlags = 0;
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if (Flags & SectionFlag::SecAlloc)
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*SR.NewFlags |= ELF::SHF_ALLOC;
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if (!(Flags & SectionFlag::SecReadonly))
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*SR.NewFlags |= ELF::SHF_WRITE;
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if (Flags & SectionFlag::SecCode)
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*SR.NewFlags |= ELF::SHF_EXECINSTR;
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if (Flags & SectionFlag::SecMerge)
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*SR.NewFlags |= ELF::SHF_MERGE;
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if (Flags & SectionFlag::SecStrings)
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*SR.NewFlags |= ELF::SHF_STRINGS;
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}
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return SR;
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}
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static const StringMap<MachineInfo> ArchMap{
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// Name, {EMachine, 64bit, LittleEndian}
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{"aarch64", {ELF::EM_AARCH64, true, true}},
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{"arm", {ELF::EM_ARM, false, true}},
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{"i386", {ELF::EM_386, false, true}},
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{"i386:x86-64", {ELF::EM_X86_64, true, true}},
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{"powerpc:common64", {ELF::EM_PPC64, true, true}},
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{"sparc", {ELF::EM_SPARC, false, true}},
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{"x86-64", {ELF::EM_X86_64, true, true}},
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};
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static const MachineInfo &getMachineInfo(StringRef Arch) {
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auto Iter = ArchMap.find(Arch);
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if (Iter == std::end(ArchMap))
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error("Invalid architecture: '" + Arch + "'");
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return Iter->getValue();
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}
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static void addGlobalSymbolsFromFile(std::vector<std::string> &Symbols,
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StringRef Filename) {
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SmallVector<StringRef, 16> Lines;
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auto BufOrErr = MemoryBuffer::getFile(Filename);
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if (!BufOrErr)
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reportError(Filename, BufOrErr.getError());
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BufOrErr.get()->getBuffer().split(Lines, '\n');
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for (StringRef Line : Lines) {
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// Ignore everything after '#', trim whitespace, and only add the symbol if
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// it's not empty.
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auto TrimmedLine = Line.split('#').first.trim();
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if (!TrimmedLine.empty())
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Symbols.push_back(TrimmedLine.str());
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}
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}
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// ParseObjcopyOptions returns the config and sets the input arguments. If a
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// help flag is set then ParseObjcopyOptions will print the help messege and
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// exit.
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DriverConfig parseObjcopyOptions(ArrayRef<const char *> ArgsArr) {
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ObjcopyOptTable T;
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unsigned MissingArgumentIndex, MissingArgumentCount;
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llvm::opt::InputArgList InputArgs =
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T.ParseArgs(ArgsArr, MissingArgumentIndex, MissingArgumentCount);
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if (InputArgs.size() == 0) {
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T.PrintHelp(errs(), "llvm-objcopy input [output]", "objcopy tool");
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exit(1);
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}
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if (InputArgs.hasArg(OBJCOPY_help)) {
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T.PrintHelp(outs(), "llvm-objcopy input [output]", "objcopy tool");
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exit(0);
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}
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if (InputArgs.hasArg(OBJCOPY_version)) {
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outs() << "llvm-objcopy, compatible with GNU objcopy\n";
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cl::PrintVersionMessage();
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exit(0);
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}
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SmallVector<const char *, 2> Positional;
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for (auto Arg : InputArgs.filtered(OBJCOPY_UNKNOWN))
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error("unknown argument '" + Arg->getAsString(InputArgs) + "'");
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for (auto Arg : InputArgs.filtered(OBJCOPY_INPUT))
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Positional.push_back(Arg->getValue());
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if (Positional.empty())
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error("No input file specified");
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if (Positional.size() > 2)
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error("Too many positional arguments");
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CopyConfig Config;
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Config.InputFilename = Positional[0];
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Config.OutputFilename = Positional[Positional.size() == 1 ? 0 : 1];
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if (InputArgs.hasArg(OBJCOPY_target) &&
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(InputArgs.hasArg(OBJCOPY_input_target) ||
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InputArgs.hasArg(OBJCOPY_output_target)))
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error("--target cannot be used with --input-target or --output-target");
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if (InputArgs.hasArg(OBJCOPY_target)) {
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Config.InputFormat = InputArgs.getLastArgValue(OBJCOPY_target);
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Config.OutputFormat = InputArgs.getLastArgValue(OBJCOPY_target);
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} else {
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Config.InputFormat = InputArgs.getLastArgValue(OBJCOPY_input_target);
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Config.OutputFormat = InputArgs.getLastArgValue(OBJCOPY_output_target);
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}
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if (Config.InputFormat == "binary") {
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auto BinaryArch = InputArgs.getLastArgValue(OBJCOPY_binary_architecture);
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if (BinaryArch.empty())
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error("Specified binary input without specifiying an architecture");
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Config.BinaryArch = getMachineInfo(BinaryArch);
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}
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if (auto Arg = InputArgs.getLastArg(OBJCOPY_compress_debug_sections,
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OBJCOPY_compress_debug_sections_eq)) {
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Config.CompressionType = DebugCompressionType::Z;
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if (Arg->getOption().getID() == OBJCOPY_compress_debug_sections_eq) {
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Config.CompressionType =
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StringSwitch<DebugCompressionType>(
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InputArgs.getLastArgValue(OBJCOPY_compress_debug_sections_eq))
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.Case("zlib-gnu", DebugCompressionType::GNU)
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.Case("zlib", DebugCompressionType::Z)
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.Default(DebugCompressionType::None);
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if (Config.CompressionType == DebugCompressionType::None)
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error("Invalid or unsupported --compress-debug-sections format: " +
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InputArgs.getLastArgValue(OBJCOPY_compress_debug_sections_eq));
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if (!zlib::isAvailable())
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error("LLVM was not compiled with LLVM_ENABLE_ZLIB: can not compress.");
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}
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}
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Config.AddGnuDebugLink = InputArgs.getLastArgValue(OBJCOPY_add_gnu_debuglink);
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Config.BuildIdLinkDir = InputArgs.getLastArgValue(OBJCOPY_build_id_link_dir);
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if (InputArgs.hasArg(OBJCOPY_build_id_link_input))
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Config.BuildIdLinkInput =
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InputArgs.getLastArgValue(OBJCOPY_build_id_link_input);
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if (InputArgs.hasArg(OBJCOPY_build_id_link_output))
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Config.BuildIdLinkOutput =
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InputArgs.getLastArgValue(OBJCOPY_build_id_link_output);
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Config.SplitDWO = InputArgs.getLastArgValue(OBJCOPY_split_dwo);
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Config.SymbolsPrefix = InputArgs.getLastArgValue(OBJCOPY_prefix_symbols);
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for (auto Arg : InputArgs.filtered(OBJCOPY_redefine_symbol)) {
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if (!StringRef(Arg->getValue()).contains('='))
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error("Bad format for --redefine-sym");
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auto Old2New = StringRef(Arg->getValue()).split('=');
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if (!Config.SymbolsToRename.insert(Old2New).second)
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error("Multiple redefinition of symbol " + Old2New.first);
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}
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for (auto Arg : InputArgs.filtered(OBJCOPY_rename_section)) {
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SectionRename SR = parseRenameSectionValue(StringRef(Arg->getValue()));
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if (!Config.SectionsToRename.try_emplace(SR.OriginalName, SR).second)
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error("Multiple renames of section " + SR.OriginalName);
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}
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for (auto Arg : InputArgs.filtered(OBJCOPY_remove_section))
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Config.ToRemove.push_back(Arg->getValue());
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for (auto Arg : InputArgs.filtered(OBJCOPY_keep_section))
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Config.KeepSection.push_back(Arg->getValue());
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for (auto Arg : InputArgs.filtered(OBJCOPY_only_section))
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Config.OnlySection.push_back(Arg->getValue());
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for (auto Arg : InputArgs.filtered(OBJCOPY_add_section))
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Config.AddSection.push_back(Arg->getValue());
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for (auto Arg : InputArgs.filtered(OBJCOPY_dump_section))
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Config.DumpSection.push_back(Arg->getValue());
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Config.StripAll = InputArgs.hasArg(OBJCOPY_strip_all);
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Config.StripAllGNU = InputArgs.hasArg(OBJCOPY_strip_all_gnu);
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Config.StripDebug = InputArgs.hasArg(OBJCOPY_strip_debug);
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Config.StripDWO = InputArgs.hasArg(OBJCOPY_strip_dwo);
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Config.StripSections = InputArgs.hasArg(OBJCOPY_strip_sections);
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Config.StripNonAlloc = InputArgs.hasArg(OBJCOPY_strip_non_alloc);
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Config.StripUnneeded = InputArgs.hasArg(OBJCOPY_strip_unneeded);
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Config.ExtractDWO = InputArgs.hasArg(OBJCOPY_extract_dwo);
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Config.LocalizeHidden = InputArgs.hasArg(OBJCOPY_localize_hidden);
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Config.Weaken = InputArgs.hasArg(OBJCOPY_weaken);
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Config.DiscardAll = InputArgs.hasArg(OBJCOPY_discard_all);
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Config.OnlyKeepDebug = InputArgs.hasArg(OBJCOPY_only_keep_debug);
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Config.KeepFileSymbols = InputArgs.hasArg(OBJCOPY_keep_file_symbols);
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Config.DecompressDebugSections =
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InputArgs.hasArg(OBJCOPY_decompress_debug_sections);
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for (auto Arg : InputArgs.filtered(OBJCOPY_localize_symbol))
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Config.SymbolsToLocalize.push_back(Arg->getValue());
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for (auto Arg : InputArgs.filtered(OBJCOPY_keep_global_symbol))
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Config.SymbolsToKeepGlobal.push_back(Arg->getValue());
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for (auto Arg : InputArgs.filtered(OBJCOPY_keep_global_symbols))
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addGlobalSymbolsFromFile(Config.SymbolsToKeepGlobal, Arg->getValue());
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for (auto Arg : InputArgs.filtered(OBJCOPY_globalize_symbol))
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Config.SymbolsToGlobalize.push_back(Arg->getValue());
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for (auto Arg : InputArgs.filtered(OBJCOPY_weaken_symbol))
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Config.SymbolsToWeaken.push_back(Arg->getValue());
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for (auto Arg : InputArgs.filtered(OBJCOPY_strip_symbol))
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Config.SymbolsToRemove.push_back(Arg->getValue());
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for (auto Arg : InputArgs.filtered(OBJCOPY_keep_symbol))
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Config.SymbolsToKeep.push_back(Arg->getValue());
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Config.DeterministicArchives = InputArgs.hasFlag(
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OBJCOPY_enable_deterministic_archives,
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OBJCOPY_disable_deterministic_archives, /*default=*/true);
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Config.PreserveDates = InputArgs.hasArg(OBJCOPY_preserve_dates);
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if (Config.DecompressDebugSections &&
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Config.CompressionType != DebugCompressionType::None) {
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error("Cannot specify --compress-debug-sections at the same time as "
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"--decompress-debug-sections at the same time");
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}
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if (Config.DecompressDebugSections && !zlib::isAvailable())
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error("LLVM was not compiled with LLVM_ENABLE_ZLIB: cannot decompress.");
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DriverConfig DC;
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DC.CopyConfigs.push_back(std::move(Config));
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return DC;
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}
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// ParseStripOptions returns the config and sets the input arguments. If a
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// help flag is set then ParseStripOptions will print the help messege and
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// exit.
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DriverConfig parseStripOptions(ArrayRef<const char *> ArgsArr) {
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StripOptTable T;
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unsigned MissingArgumentIndex, MissingArgumentCount;
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llvm::opt::InputArgList InputArgs =
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T.ParseArgs(ArgsArr, MissingArgumentIndex, MissingArgumentCount);
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if (InputArgs.size() == 0) {
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T.PrintHelp(errs(), "llvm-strip [options] file...", "strip tool");
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exit(1);
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}
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if (InputArgs.hasArg(STRIP_help)) {
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T.PrintHelp(outs(), "llvm-strip [options] file...", "strip tool");
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exit(0);
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}
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if (InputArgs.hasArg(STRIP_version)) {
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outs() << "llvm-strip, compatible with GNU strip\n";
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cl::PrintVersionMessage();
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exit(0);
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}
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SmallVector<const char *, 2> Positional;
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for (auto Arg : InputArgs.filtered(STRIP_UNKNOWN))
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error("unknown argument '" + Arg->getAsString(InputArgs) + "'");
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for (auto Arg : InputArgs.filtered(STRIP_INPUT))
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Positional.push_back(Arg->getValue());
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if (Positional.empty())
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error("No input file specified");
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if (Positional.size() > 1 && InputArgs.hasArg(STRIP_output))
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error("Multiple input files cannot be used in combination with -o");
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CopyConfig Config;
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Config.StripDebug = InputArgs.hasArg(STRIP_strip_debug);
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Config.DiscardAll = InputArgs.hasArg(STRIP_discard_all);
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Config.StripUnneeded = InputArgs.hasArg(STRIP_strip_unneeded);
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Config.StripAll = InputArgs.hasArg(STRIP_strip_all);
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Config.StripAllGNU = InputArgs.hasArg(STRIP_strip_all_gnu);
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if (!Config.StripDebug && !Config.StripUnneeded && !Config.DiscardAll &&
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!Config.StripAllGNU)
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Config.StripAll = true;
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for (auto Arg : InputArgs.filtered(STRIP_keep_section))
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Config.KeepSection.push_back(Arg->getValue());
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for (auto Arg : InputArgs.filtered(STRIP_remove_section))
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Config.ToRemove.push_back(Arg->getValue());
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for (auto Arg : InputArgs.filtered(STRIP_keep_symbol))
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Config.SymbolsToKeep.push_back(Arg->getValue());
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Config.DeterministicArchives =
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InputArgs.hasFlag(STRIP_enable_deterministic_archives,
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STRIP_disable_deterministic_archives, /*default=*/true);
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Config.PreserveDates = InputArgs.hasArg(STRIP_preserve_dates);
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DriverConfig DC;
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if (Positional.size() == 1) {
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Config.InputFilename = Positional[0];
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Config.OutputFilename =
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InputArgs.getLastArgValue(STRIP_output, Positional[0]);
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DC.CopyConfigs.push_back(std::move(Config));
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} else {
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for (const char *Filename : Positional) {
|
|
Config.InputFilename = Filename;
|
|
Config.OutputFilename = Filename;
|
|
DC.CopyConfigs.push_back(Config);
|
|
}
|
|
}
|
|
|
|
return DC;
|
|
}
|
|
|
|
} // namespace objcopy
|
|
} // namespace llvm
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