rui314/mold
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This commit is contained in:
Rui Ueyama 2020-11-29 18:58:36 +09:00
parent 5d82dfe693
commit 12c74f96fa
3 changed files with 27 additions and 31 deletions
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10
main.cc
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@ -991,11 +991,17 @@ int main(int argc, char **argv) {
// Fill .gnu.version and .gnu.version_r section contents.
fill_symbol_versions();
// Compute .symtab and .strtab sizes for each file.
tbb::parallel_for_each(out::objs, [](ObjectFile *file) {
file->compute_symtab();
});
// Now that we have computed sizes for all sections and assigned
// section indices to them, so we can fix section header contents
// for all output sections.
for (OutputChunk *chunk : out::chunks)
chunk->update_shdr();
tbb::parallel_for_each(out::chunks, [](OutputChunk *chunk) {
chunk->update_shdr();
});
// Assign offsets to output sections
u64 filesize = set_osec_offsets(out::chunks);

1
mold.h
View File

@ -473,6 +473,7 @@ public:
shdr.sh_size = 1;
}
void update_shdr() override;
void initialize_buf() override;
};

47
output_chunks.cc
View File

@ -189,6 +189,15 @@ void RelDynSection::copy_buf() {
write(sym, R_X86_64_COPY, sym->get_addr());
}
void StrtabSection::update_shdr() {
u32 size = 1;
for (ObjectFile *file : out::objs) {
file->strtab_offset = size;
size += file->strtab_size;
}
out::strtab->shdr.sh_size = size;
}
void StrtabSection::initialize_buf() {
out::buf[shdr.sh_offset] = '\0';
}
@ -235,41 +244,21 @@ void DynstrSection::copy_buf() {
}
void SymtabSection::update_shdr() {
shdr.sh_link = out::strtab->shndx;
u32 size = sizeof(ELF64LE::Sym);
tbb::parallel_for_each(out::objs,
[](ObjectFile *file) { file->compute_symtab(); });
// Initialize symbol offsets.
out::objs[0]->local_symtab_offset = sizeof(ELF64LE::Sym);
for (int i = 1; i < out::objs.size(); i++) {
out::objs[i]->local_symtab_offset =
out::objs[i - 1]->local_symtab_offset + out::objs[i - 1]->local_symtab_size;
for (ObjectFile *file : out::objs) {
file->local_symtab_offset = size;
size += file->local_symtab_size;
}
out::objs[0]->global_symtab_offset =
out::objs.back()->local_symtab_offset + out::objs.back()->local_symtab_size;
for (int i = 1; i < out::objs.size(); i++) {
out::objs[i]->global_symtab_offset =
out::objs[i - 1]->global_symtab_offset + out::objs[i - 1]->global_symtab_size;
for (ObjectFile *file : out::objs) {
file->global_symtab_offset = size;
size += file->global_symtab_size;
}
shdr.sh_info = out::objs[0]->global_symtab_offset / sizeof(ELF64LE::Sym);
shdr.sh_size =
out::objs.back()->global_symtab_offset + out::objs.back()->global_symtab_size;
// Initialize strtab offsets.
out::objs[0]->strtab_offset = 1;
for (int i = 1; i < out::objs.size(); i++) {
out::objs[i]->strtab_offset =
out::objs[i - 1]->strtab_offset + out::objs[i - 1]->strtab_size;
}
out::strtab->shdr.sh_size =
out::objs.back()->strtab_offset + out::objs.back()->strtab_size;
shdr.sh_link = out::strtab->shndx;
shdr.sh_size = size;
}
void SymtabSection::copy_buf() {