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macho: fix calculating file offset for atom when allocating

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This commit is contained in:
Jakub Konka 2021-09-01 23:44:01 +02:00
parent 17066cc12e
commit 9dbad2d188
1 changed files with 13 additions and 1 deletions
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14
src/link/MachO.zig
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@ -1929,7 +1929,19 @@ pub fn allocateAtom(self: *MachO, atom: *TextBlock, match: MatchingSection) !u64
const expand_section = atom_placement == null or atom_placement.?.next == null;
if (expand_section) {
const max_size = seg.allocatedSize(vaddr - pagezero_vmsize);
const sect_offset: u64 = blk: {
if (self.data_segment_cmd_index.? == match.seg) {
if (self.bss_section_index) |idx| {
if (idx == match.sect) break :blk self.bss_file_offset.?;
}
if (self.tlv_bss_section_index) |idx| {
if (idx == match.sect) break :blk self.tlv_bss_file_offset.?;
}
}
break :blk sect.offset;
};
const file_offset = sect_offset + vaddr - sect.addr;
const max_size = seg.allocatedSize(file_offset);
log.debug(" (atom size 0x{x}, max available size 0x{x})", .{ atom.size, max_size });
assert(atom.size <= max_size); // TODO must expand the section
}