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This commit is contained in:
Rui Ueyama 2021-04-01 14:06:39 +09:00
parent 2d74f8a85b
commit fc21d22b1b
2 changed files with 35 additions and 3 deletions
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11
mold.h
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@ -90,6 +90,7 @@ struct SymbolAux {
i32 tlsdesc_idx = -1;
i32 plt_idx = -1;
i32 pltgot_idx = -1;
i32 iplt_idx = -1;
i32 dynsym_idx = -1;
};
@ -1487,6 +1488,12 @@ public:
ctx.symbol_aux[aux_idx].pltgot_idx = idx;
}
void set_iplt_idx(Context<E> &ctx, i32 idx) const {
assert(aux_idx != -1);
assert(ctx.symbol_aux[aux_idx].iplt_idx < 0);
ctx.symbol_aux[aux_idx].iplt_idx = idx;
}
void set_dynsym_idx(Context<E> &ctx, i32 idx) const {
assert(aux_idx != -1);
assert(ctx.symbol_aux[aux_idx].dynsym_idx < 0);
@ -1521,6 +1528,10 @@ public:
return (aux_idx == -1) ? -1 : ctx.symbol_aux[aux_idx].pltgot_idx;
}
i32 get_iplt_idx(Context<E> &ctx) const {
return (aux_idx == -1) ? -1 : ctx.symbol_aux[aux_idx].iplt_idx;
}
i32 get_dynsym_idx(Context<E> &ctx) const {
return (aux_idx == -1) ? -1 : ctx.symbol_aux[aux_idx].dynsym_idx;
}

27
output_chunks.cc
View File

@ -745,7 +745,13 @@ void GotPltSection<E>::copy_buf(Context<E> &ctx) {
template <typename E>
void GotIpltSection<E>::copy_buf(Context<E> &ctx) {
// TODO
typename E::word *buf = (typename E::word *)(ctx.buf + this->shdr.sh_offset);
if (E::rel_type == SHT_REL) {
std::span<Symbol<E> *> syms = ctx.iplt->symbols;
for (i64 i = 0; i < syms.size(); i++)
buf[i] = syms[i]->input_section->get_addr() + syms[i]->value;
}
}
template <typename E>
@ -770,12 +776,27 @@ void PltSection<E>::add_symbol(Context<E> &ctx, Symbol<E> *sym) {
template <typename E>
void IpltSection<E>::add_symbol(Context<E> &ctx, Symbol<E> *sym) {
// TODO
sym->set_iplt_idx(ctx, this->shdr.sh_size / E::pltgot_size);
this->shdr.sh_size += E::pltgot_size;
symbols.push_back(sym);
ctx.gotiplt->shdr.sh_size += E::got_size;
}
template <typename E>
void IpltSection<E>::copy_buf(Context<E> &ctx) {
// TODO
u8 *buf = ctx.buf + this->shdr.sh_offset;
static const u8 data[] = {
0xff, 0x25, 0, 0, 0, 0, // jmp *foo@IGOT
0x66, 0x90, // nop
};
for (i64 i = 0; i < symbols.size(); i++) {
u8 *ent = buf + i * E::pltgot_size;
memcpy(ent, data, sizeof(data));
*(u32 *)(ent + 2) = ctx.gotiplt->shdr.sh_addr + i * E::got_size - 6;
}
}
template <typename E>