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02ada95c85
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61
main.cc
61
main.cc
@ -148,9 +148,11 @@ void read_file(MemoryBufferRef mb) {
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out::objs.push_back(new ObjectFile(member, mb.getBufferIdentifier()));
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break;
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case file_magic::elf_relocatable:
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case file_magic::elf_shared_object:
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out::objs.push_back(new ObjectFile(mb, ""));
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break;
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case file_magic::elf_shared_object:
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out::dsos.push_back(new ObjectFile(mb, ""));
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break;
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case file_magic::unknown:
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parse_linker_script(mb.getBufferIdentifier(), mb.getBuffer());
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break;
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@ -177,13 +179,13 @@ static void resolve_symbols() {
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MyTimer t("resolve_symbols", before_copy_timer);
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// Register defined symbols
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tbb::parallel_for_each(out::objs,
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[](ObjectFile *file) { file->resolve_symbols(); });
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tbb::parallel_for_each(out::objs, [](ObjectFile *file) { file->resolve_symbols(); });
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tbb::parallel_for_each(out::dsos, [](ObjectFile *file) { file->resolve_symbols(); });
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// Mark archive members we include into the final output.
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std::vector<ObjectFile *> root;
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for (ObjectFile *file : out::objs)
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if (file->is_alive && !file->is_dso)
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if (file->is_alive)
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root.push_back(file);
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tbb::parallel_do(
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@ -405,12 +407,12 @@ static void scan_rels() {
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isec->scan_relocations();
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});
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std::vector<std::vector<Symbol *>> vec(out::objs.size());
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std::vector<ObjectFile *> files = join(out::objs, out::dsos);
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std::vector<std::vector<Symbol *>> vec(files.size());
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tbb::parallel_for(0, (int)out::objs.size(), [&](int i) {
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ObjectFile *file = out::objs[i];
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for (Symbol *sym : file->symbols)
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if (sym->file == file && sym->flags)
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tbb::parallel_for(0, (int)files.size(), [&](int i) {
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for (Symbol *sym : files[i]->symbols)
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if (sym->file == files[i] && sym->flags)
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vec[i].push_back(sym);
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});
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@ -716,17 +718,17 @@ int main(int argc, char **argv) {
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{
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MyTimer t("parse", parse_timer);
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tbb::parallel_for_each(out::objs, [](ObjectFile *file) { file->parse(); });
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tbb::parallel_for_each(out::dsos, [](ObjectFile *file) { file->parse(); });
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}
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// Uniquify shared object files with soname
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{
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llvm::StringSet<> seen;
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for (auto it = out::objs.begin(); it != out::objs.end();) {
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StringRef soname = (*it)->soname;
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if (!soname.empty() && !seen.insert(soname).second)
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out::objs.erase(it);
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for (int i = 0; i < out::dsos.size();) {
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if (seen.insert(out::dsos[i]->soname).second)
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i++;
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else
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it++;
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out::dsos.erase(out::dsos.begin() + i);
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}
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}
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@ -777,22 +779,24 @@ int main(int argc, char **argv) {
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// Set priorities to files. File priority 1 is reserved for the internal file.
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int priority = 2;
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for (ObjectFile *file : out::objs)
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if (!file->is_in_archive && !file->is_dso)
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if (!file->is_in_archive)
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file->priority = priority++;
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for (ObjectFile *file : out::objs)
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if (file->is_in_archive && !file->is_dso)
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file->priority = priority++;
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for (ObjectFile *file : out::objs)
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if (file->is_dso)
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if (file->is_in_archive)
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file->priority = priority++;
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for (ObjectFile *file : out::dsos)
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file->priority = priority++;
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// Resolve symbols and fix the set of object files that are
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// included to the final output.
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resolve_symbols();
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if (args.hasArg(OPT_trace))
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if (args.hasArg(OPT_trace)) {
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for (ObjectFile *file : out::objs)
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message(toString(file));
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for (ObjectFile *file : out::dsos)
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message(toString(file));
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}
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// Remove redundant comdat sections (e.g. duplicate inline functions).
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eliminate_comdats();
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@ -862,9 +866,8 @@ int main(int argc, char **argv) {
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check_undefined_symbols();
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// Copy shared object name strings to .dynsym
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for (ObjectFile *file : out::objs)
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if (file->is_alive && file->is_dso)
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out::dynstr->add_string(file->soname);
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for (ObjectFile *file : out::dsos)
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out::dynstr->add_string(file->soname);
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// Add headers and sections that have to be at the beginning
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// or the ending of a file.
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@ -939,23 +942,17 @@ int main(int argc, char **argv) {
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if (config.print_map) {
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MyTimer t("print_map");
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print_map(out::objs, out::chunks);
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print_map();
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}
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#if 0
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for (ObjectFile *file : out::objs)
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for (InputSection *isec : file->sections)
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if (isec)
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message(toString(isec));
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#endif
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// Show stat numbers
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Counter num_input_sections("input_sections");
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for (ObjectFile *file : out::objs)
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num_input_sections.inc(file->sections.size());
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Counter num_output_chunks("output_out::chunks", out::chunks.size());
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Counter num_files("files", out::objs.size());
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Counter num_objs("num_objs", out::objs.size());
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Counter num_dsos("num_dsos", out::dsos.size());
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Counter filesize_counter("filesize", filesize);
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Counter::print();
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@ -4,16 +4,16 @@
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using namespace llvm;
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void print_map(ArrayRef<ObjectFile *> files, ArrayRef<OutputChunk *> output_sections) {
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void print_map() {
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// Construct a section-to-symbol map.
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std::unordered_multimap<InputChunk *, Symbol *> map;
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for (ObjectFile *file : files)
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for (ObjectFile *file : out::objs)
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for (Symbol *sym : file->symbols)
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if (sym->file == file && sym->input_section)
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map.insert({sym->input_section, sym});
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llvm::outs() << " VMA Size Align Out In Symbol\n";
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for (OutputChunk *osec : output_sections) {
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for (OutputChunk *osec : out::chunks) {
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llvm::outs() << format("%16llx %8llx %5lld ",
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(u64)osec->shdr.sh_addr,
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(u64)osec->shdr.sh_size,
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10
mold.h
10
mold.h
@ -618,6 +618,7 @@ namespace out {
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using namespace llvm::ELF;
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inline std::vector<ObjectFile *> objs;
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inline std::vector<ObjectFile *> dsos;
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inline std::vector<OutputChunk *> chunks;
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inline u8 *buf;
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@ -796,6 +797,13 @@ inline void write_vector(u8 *buf, const std::vector<T> &vec) {
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memcpy(buf, vec.data(), vec.size() * sizeof(T));
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}
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template <typename T>
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inline std::vector<T> join(std::vector<T> &a, std::vector<T> &b) {
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std::vector<T> vec(a);
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vec.insert(vec.end(), b.begin(), b.end());
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return vec;
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}
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template <typename T>
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inline std::vector<T> flatten(std::vector<std::vector<T>> &vec) {
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std::vector<T> ret;
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@ -846,7 +854,7 @@ private:
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// mapfile.cc
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//
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void print_map(ArrayRef<ObjectFile *> files, ArrayRef<OutputChunk *> output_sections);
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void print_map();
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//
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// main.cc
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@ -352,7 +352,7 @@ void ObjectFile::maybe_override_symbol(const ELF64LE::Sym &esym, Symbol &sym, in
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if (new_rank < existing_rank) {
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sym.file = this;
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sym.input_section = isec;
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sym.piece_ref = sym_pieces[idx];
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sym.piece_ref = (idx < sym_pieces.size()) ? sym_pieces[idx] : StringPieceRef();
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sym.value = esym.st_value;
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sym.type = (is_dso && esym.getType() == STT_GNU_IFUNC) ? STT_FUNC : esym.getType();
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sym.binding = esym.getBinding();
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};
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int i = 1;
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for (ObjectFile *file : out::objs) {
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if (!file->soname.empty()) {
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define(DT_NEEDED, i);
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i += file->soname.size() + 1;
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}
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for (ObjectFile *file : out::dsos) {
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define(DT_NEEDED, i);
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i += file->soname.size() + 1;
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}
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define(DT_RELA, out::reldyn->shdr.sh_addr);
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