rui314/mold
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This commit is contained in:
Rui Ueyama 2020-11-01 16:22:47 +09:00
parent ff92ae7c3c
commit d97859ab7b
3 changed files with 24 additions and 3 deletions
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1
main.cc
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@ -519,6 +519,7 @@ int main(int argc, char **argv) {
// out::interp = new InterpSection;
out::got = new GotSection(".got");
out::gotplt = new GotSection(".got.plt");
out::relplt = new RelPltSection;
out::shstrtab = new ShstrtabSection;
out::symtab = new SymtabSection;
out::strtab = new StrtabSection;

10
mold.h
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@ -382,10 +382,10 @@ public:
std::vector<std::pair<Kind, Symbol *>> symbols;
};
class RelSection : public OutputChunk {
class RelPltSection : public OutputChunk {
public:
RelSection() {
name = ".rela.dyn";
RelPltSection() {
this->name = ".rela.plt";
shdr.sh_flags = llvm::ELF::SHF_ALLOC;
shdr.sh_type = llvm::ELF::SHT_RELA;
shdr.sh_addralign = 8;
@ -397,6 +397,9 @@ public:
u64 get_size() const override { return size; }
u64 size = 0;
OutputChunk *output_chunk = nullptr;
std::vector<std::pair<u32, Symbol *>> contents;
};
class ShstrtabSection : public OutputChunk {
@ -465,6 +468,7 @@ extern OutputPhdr *phdr;
extern InterpSection *interp;
extern GotSection *got;
extern GotSection *gotplt;
extern RelPltSection *relplt;
extern ShstrtabSection *shstrtab;
extern SymtabSection *symtab;
extern StrtabSection *strtab;

16
output_chunks.cc
View File

@ -8,6 +8,7 @@ OutputPhdr *out::phdr;
InterpSection *out::interp;
GotSection *out::got;
GotSection *out::gotplt;
RelPltSection *out::relplt;
ShstrtabSection *out::shstrtab;
SymtabSection *out::symtab;
StrtabSection *out::strtab;
@ -192,3 +193,18 @@ void GotSection::relocate(u8 *buf) {
buf += 8;
}
}
void RelPltSection::relocate(u8 *buf) {
assert(size == contents.size());
auto *rel = (ELF64LE::Rela *)(buf + shdr.sh_offset);
for (auto pair : contents) {
u32 offset = pair.first;
Symbol *sym = pair.second;
rel->r_offset = output_chunk->shdr.sh_addr + offset;
rel->setType(R_X86_64_IRELATIVE, false);
rel->r_addend = sym->addr;
}
}