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elf: populate debug atoms on the linker side after Dwarf.flushModule

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Jakub Konka 2024-08-18 14:54:12 +02:00 committed by Jacob Young
parent 41f2302865
commit 56e1ae21e4
2 changed files with 38 additions and 1 deletions
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2
src/link/Dwarf.zig
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@ -201,7 +201,7 @@ const StringSection = struct {
};
/// A linker section containing a sequence of `Unit`s.
const Section = struct {
pub const Section = struct {
dirty: bool,
pad_to_ideal: bool,
alignment: InternPool.Alignment,

37
src/link/Elf/ZigObject.zig
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@ -181,6 +181,43 @@ pub fn flushModule(self: *ZigObject, elf_file: *Elf, tid: Zcu.PerThread.Id) !voi
const pt: Zcu.PerThread = .{ .zcu = elf_file.base.comp.module.?, .tid = tid };
try dwarf.flushModule(pt);
// TODO invert this logic so that we manage the output section with the atom, not the
// other way around
for ([_]u32{
self.debug_info_index.?,
self.debug_abbrev_index.?,
self.debug_str_index.?,
self.debug_aranges_index.?,
self.debug_line_index.?,
self.debug_line_str_index.?,
self.debug_loclists_index.?,
self.debug_rnglists_index.?,
}, [_]Dwarf.Section{
dwarf.debug_info.section,
dwarf.debug_abbrev.section,
dwarf.debug_str.section,
dwarf.debug_aranges.section,
dwarf.debug_line.section,
dwarf.debug_line_str.section,
dwarf.debug_loclists.section,
dwarf.debug_rnglists.section,
}) |sym_index, sect| {
const sym = self.symbol(sym_index);
const atom_ptr = self.atom(sym.ref.index).?;
if (!atom_ptr.alive) continue;
const shdr = elf_file.shdrs.items[sym.outputShndx(elf_file).?];
const esym = &self.symtab.items(.elf_sym)[sym.esym_index];
esym.st_size = shdr.sh_size;
atom_ptr.size = shdr.sh_size;
atom_ptr.alignment = Atom.Alignment.fromNonzeroByteUnits(shdr.sh_addralign);
const relocs = &self.relocs.items[atom_ptr.relocsShndx().?];
_ = relocs;
for (sect.units.items) |unit| {
_ = unit;
}
}
self.debug_abbrev_section_dirty = false;
self.debug_aranges_section_dirty = false;
self.debug_rnglists_section_dirty = false;