diff options
Diffstat (limited to 'llvm/tools/llvm-objcopy/COFF/COFFObjcopy.cpp')
| -rw-r--r-- | llvm/tools/llvm-objcopy/COFF/COFFObjcopy.cpp | 53 |
1 files changed, 49 insertions, 4 deletions
diff --git a/llvm/tools/llvm-objcopy/COFF/COFFObjcopy.cpp b/llvm/tools/llvm-objcopy/COFF/COFFObjcopy.cpp index b172fae527eb5..43ec2b1fa82f2 100644 --- a/llvm/tools/llvm-objcopy/COFF/COFFObjcopy.cpp +++ b/llvm/tools/llvm-objcopy/COFF/COFFObjcopy.cpp @@ -89,6 +89,43 @@ static void addGnuDebugLink(Object &Obj, StringRef DebugLinkFile) { IMAGE_SCN_MEM_DISCARDABLE); } +static void setSectionFlags(Section &Sec, SectionFlag AllFlags) { + // Need to preserve alignment flags. + const uint32_t PreserveMask = + IMAGE_SCN_ALIGN_1BYTES | IMAGE_SCN_ALIGN_2BYTES | IMAGE_SCN_ALIGN_4BYTES | + IMAGE_SCN_ALIGN_8BYTES | IMAGE_SCN_ALIGN_16BYTES | + IMAGE_SCN_ALIGN_32BYTES | IMAGE_SCN_ALIGN_64BYTES | + IMAGE_SCN_ALIGN_128BYTES | IMAGE_SCN_ALIGN_256BYTES | + IMAGE_SCN_ALIGN_512BYTES | IMAGE_SCN_ALIGN_1024BYTES | + IMAGE_SCN_ALIGN_2048BYTES | IMAGE_SCN_ALIGN_4096BYTES | + IMAGE_SCN_ALIGN_8192BYTES; + + // Setup new section characteristics based on the flags provided in command + // line. + uint32_t NewCharacteristics = + (Sec.Header.Characteristics & PreserveMask) | IMAGE_SCN_MEM_READ; + + if ((AllFlags & SectionFlag::SecAlloc) && !(AllFlags & SectionFlag::SecLoad)) + NewCharacteristics |= IMAGE_SCN_CNT_UNINITIALIZED_DATA; + if (AllFlags & SectionFlag::SecNoload) + NewCharacteristics |= IMAGE_SCN_LNK_REMOVE; + if (!(AllFlags & SectionFlag::SecReadonly)) + NewCharacteristics |= IMAGE_SCN_MEM_WRITE; + if (AllFlags & SectionFlag::SecDebug) + NewCharacteristics |= + IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_DISCARDABLE; + if (AllFlags & SectionFlag::SecCode) + NewCharacteristics |= IMAGE_SCN_CNT_CODE | IMAGE_SCN_MEM_EXECUTE; + if (AllFlags & SectionFlag::SecData) + NewCharacteristics |= IMAGE_SCN_CNT_INITIALIZED_DATA; + if (AllFlags & SectionFlag::SecShare) + NewCharacteristics |= IMAGE_SCN_MEM_SHARED; + if (AllFlags & SectionFlag::SecExclude) + NewCharacteristics |= IMAGE_SCN_LNK_REMOVE; + + Sec.Header.Characteristics = NewCharacteristics; +} + static Error handleArgs(const CopyConfig &Config, Object &Obj) { // Perform the actual section removals. Obj.removeSections([&Config](const Section &Sec) { @@ -178,6 +215,13 @@ static Error handleArgs(const CopyConfig &Config, Object &Obj) { return false; }); + if (!Config.SetSectionFlags.empty()) + for (Section &Sec : Obj.getMutableSections()) { + const auto It = Config.SetSectionFlags.find(Sec.Name); + if (It != Config.SetSectionFlags.end()) + setSectionFlags(Sec, It->second.NewFlags); + } + for (const auto &Flag : Config.AddSection) { StringRef SecName, FileName; std::tie(SecName, FileName) = Flag.split("="); @@ -205,10 +249,11 @@ static Error handleArgs(const CopyConfig &Config, Object &Obj) { !Config.SymbolsToGlobalize.empty() || !Config.SymbolsToKeep.empty() || !Config.SymbolsToLocalize.empty() || !Config.SymbolsToWeaken.empty() || !Config.SymbolsToKeepGlobal.empty() || !Config.SectionsToRename.empty() || - !Config.SetSectionAlignment.empty() || !Config.SetSectionFlags.empty() || - Config.ExtractDWO || Config.KeepFileSymbols || Config.LocalizeHidden || - Config.PreserveDates || Config.StripDWO || Config.StripNonAlloc || - Config.StripSections || Config.Weaken || Config.DecompressDebugSections || + !Config.SetSectionAlignment.empty() || Config.ExtractDWO || + Config.LocalizeHidden || Config.PreserveDates || Config.StripDWO || + Config.StripNonAlloc || Config.StripSections || + Config.StripSwiftSymbols || Config.Weaken || + Config.DecompressDebugSections || Config.DiscardMode == DiscardType::Locals || !Config.SymbolsToAdd.empty() || Config.EntryExpr) { return createStringError(llvm::errc::invalid_argument, |