72 lines
2.5 KiB
Text
72 lines
2.5 KiB
Text
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Index: lld/ELF/InputFiles.cpp
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--- lld/ELF/InputFiles.cpp.orig
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+++ lld/ELF/InputFiles.cpp
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@@ -45,6 +45,8 @@ uint32_t InputFile::nextGroupId;
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std::unique_ptr<TarWriter> elf::tar;
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+DenseMap<StringRef, StringRef> elf::gnuWarnings;
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+
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// Returns "<internal>", "foo.a(bar.o)" or "baz.o".
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std::string lld::toString(const InputFile *f) {
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static std::mutex mu;
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@@ -63,6 +65,19 @@ std::string lld::toString(const InputFile *f) {
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return std::string(f->toStringCache);
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}
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+// .gnu.warning.SYMBOL are treated as warning symbols for the given symbol
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+void lld::parseGNUWarning(StringRef name, ArrayRef<char> data, size_t size) {
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+ static std::mutex mu;
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+ if (!name.empty() && name.startswith(".gnu.warning.")) {
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+ std::lock_guard<std::mutex> lock(mu);
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+ StringRef wsym = name.substr(13);
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+ StringRef s(data.begin());
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+ StringRef wng(s.substr(0, size));
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+ symtab.insert(wsym)->gwarn = true;
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+ gnuWarnings.insert({wsym, wng});
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+ }
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+}
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+
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static ELFKind getELFKind(MemoryBufferRef mb, StringRef archiveName) {
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unsigned char size;
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unsigned char endian;
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@@ -787,6 +802,14 @@ void ObjFile<ELFT>::initializeSections(bool ignoreComd
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case SHT_RELA:
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case SHT_NULL:
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break;
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+ case SHT_PROGBITS: {
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+ this->sections[i] = createInputSection(i, sec, check(obj.getSectionName(sec, shstrtab)));
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+ StringRef name = check(obj.getSectionName(sec, shstrtab));
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+ ArrayRef<char> data =
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+ CHECK(obj.template getSectionContentsAsArray<char>(sec), this);
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+ parseGNUWarning(name, data, sec.sh_size);
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+ }
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+ break;
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case SHT_LLVM_SYMPART:
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ctx.hasSympart.store(true, std::memory_order_relaxed);
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[[fallthrough]];
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@@ -1390,6 +1413,9 @@ template <class ELFT> void SharedFile::parse() {
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const ELFFile<ELFT> obj = this->getObj<ELFT>();
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ArrayRef<Elf_Shdr> sections = getELFShdrs<ELFT>();
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+ StringRef sectionStringTable =
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+ CHECK(obj.getSectionStringTable(sections), this);
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+
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const Elf_Shdr *versymSec = nullptr;
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const Elf_Shdr *verdefSec = nullptr;
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const Elf_Shdr *verneedSec = nullptr;
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@@ -1412,6 +1438,13 @@ template <class ELFT> void SharedFile::parse() {
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case SHT_GNU_verneed:
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verneedSec = &sec;
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break;
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+ case SHT_PROGBITS: {
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+ StringRef name = CHECK(obj.getSectionName(sec, sectionStringTable), this);
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+ ArrayRef<char> data =
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+ CHECK(obj.template getSectionContentsAsArray<char>(sec), this);
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+ parseGNUWarning(name, data, sec.sh_size);
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+ break;
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+ }
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}
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}
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