macho: apply rebase reloc to dyld_private pointer

kubkon · Jan 23, 2024 · daa38cc · daa38cc
1 parent 706065e
commit daa38cc
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/src/MachO.zig b/src/MachO.zig
@@ -2043,6 +2043,16 @@ fn initDyldInfoSections(self: *MachO) !void {
 
     const gpa = self.base.allocator;
 
+    if (self.dyld_private_index) |index| {
+        // Turns out this rebase opcode is only required for <= 11.0 macOS.
+        const sym = self.getSymbol(index);
+        const seg_id = self.sections.items(.segment_id)[self.data_sect_index.?];
+        const seg = self.segments.items[seg_id];
+        try self.rebase.entries.append(gpa, .{
+            .offset = sym.getAddress(.{}, self) - seg.vmaddr,
+            .segment_id = seg_id,
+        });
+    }
     if (self.got_sect_index != null) try self.got.addDyldRelocs(self);
     if (self.tlv_ptr_sect_index != null) try self.tlv_ptr.addDyldRelocs(self);
     if (self.la_symbol_ptr_sect_index != null) try self.la_symbol_ptr.addDyldRelocs(self);