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elf: create back/forward links for atoms within section chunks

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This commit is contained in:
Jakub Konka
2024-09-04 08:10:19 +02:00
parent 6ec8b15918
commit 64ad6eff16
1 changed files with 19 additions and 1 deletions
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20
src/link/Elf/Object.zig
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@@ -988,7 +988,25 @@ pub fn allocateAtoms(self: *Object, elf_file: *Elf) !void {
if (expand_section) last_atom_ref.* = chunk.lastAtom(self).ref();
shdr.sh_addralign = @max(shdr.sh_addralign, chunk.alignment.toByteUnits().?);
// TODO create back and forward links
{
var idx: usize = 0;
while (idx < chunk.atoms.items.len) : (idx += 1) {
const curr_atom_ptr = self.atom(chunk.atoms.items[idx]).?;
if (idx > 0) {
curr_atom_ptr.prev_atom_ref = .{ .index = chunk.atoms.items[idx - 1], .file = self.index };
}
if (idx + 1 < chunk.atoms.items.len) {
curr_atom_ptr.next_atom_ref = .{ .index = chunk.atoms.items[idx + 1], .file = self.index };
}
}
}
if (elf_file.atom(alloc_res.placement)) |placement_atom| {
chunk.firstAtom(self).prev_atom_ref = placement_atom.ref();
chunk.lastAtom(self).next_atom_ref = placement_atom.next_atom_ref;
placement_atom.next_atom_ref = chunk.firstAtom(self).ref();
}
// TODO if we had a link from Atom to parent Chunk we would not need to update Atom's value or osec index
for (chunk.atoms.items) |atom_index| {
const atom_ptr = self.atom(atom_index).?;