diff --git a/libc/private/bionic_elf_tls.h b/libc/private/bionic_elf_tls.h
index 48a4d25..c67c221 100644
--- a/libc/private/bionic_elf_tls.h
+++ b/libc/private/bionic_elf_tls.h
@@ -63,8 +63,11 @@
   size_t alignment() const { return alignment_; }
   bool overflowed() const { return overflowed_; }
 
-  void reserve_tcb();
+  size_t reserve_exe_segment_and_tcb(const TlsSegment* exe_segment, const char* progname);
   void reserve_bionic_tls();
+  size_t reserve_solib_segment(const TlsSegment& segment) {
+    return reserve(segment.size, segment.alignment);
+  }
   void finish_layout();
 
 private: