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This commit is contained in:
Rui Ueyama 2020-12-07 15:50:13 +09:00
parent e99ce26374
commit 8b2493b3a9
3 changed files with 27 additions and 7 deletions
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24
main.cc
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@ -451,6 +451,23 @@ static void scan_rels() {
}
}
static void export_dynamic() {
MyTimer t("export_dynamic", before_copy_timer);
if (!config.export_dynamic)
return;
std::vector<std::vector<Symbol *>> vec(out::objs.size());
tbb::parallel_for(0, (int)out::objs.size(), [&](int i) {
for (Symbol *sym : out::objs[i]->symbols)
if (sym->file == out::objs[i])
vec[i].push_back(sym);
});
for (Symbol *sym : flatten(vec))
out::dynsym->add_symbol(sym);
}
static void fill_symbol_versions() {
MyTimer t("fill_symbol_versions", before_copy_timer);
@ -1002,6 +1019,9 @@ int main(int argc, char **argv) {
// .got.plt, .dynsym, .dynstr, etc.
scan_rels();
// Put symbols to .dynsym.
export_dynamic();
// Fill .gnu.version and .gnu.version_r section contents.
fill_symbol_versions();
@ -1014,8 +1034,8 @@ int main(int argc, char **argv) {
// section indices to them, so we can fix section header contents
// for all output sections.
tbb::parallel_for_each(out::chunks, [](OutputChunk *chunk) {
chunk->update_shdr();
});
chunk->update_shdr();
});
// Assign offsets to output sections
u64 filesize = set_osec_offsets(out::chunks);

5
output_chunks.cc
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@ -27,11 +27,10 @@ void OutputEhdr::copy_buf() {
}
void OutputShdr::update_shdr() {
int i = 1;
shdr.sh_size = sizeof(ELF64LE::Shdr);
for (OutputChunk *chunk : out::chunks)
if (chunk->kind != OutputChunk::HEADER)
i++;
shdr.sh_size = i * sizeof(ELF64LE::Shdr);
shdr.sh_size += sizeof(ELF64LE::Shdr);
}
void OutputShdr::copy_buf() {

5
test/export-dynamic.s
View File

@ -1,5 +1,6 @@
// RUN: cc -o %t.o -c %s
// RUN: mold -o %t.exe %t.o --export-dynamic
// RUN: cc -o %t1.o -c %s
// RUN: cc -shared -fPIC -o %t2.so -xc - < /dev/null
// RUN: mold -o %t.exe %t1.o %t2.so --export-dynamic
// RUN: readelf --dyn-syms %t.exe | FileCheck %s
.text