tree 4de785711dbfa8923d721f9180473328b6228a5c
parent d5099016f70b5acbfeb969787687099df703a4f4
author Evgeniy Stepanov <eugenis@google.com> 1332424913 +0400
committer Evgeniy Stepanov <eugenis@google.com> 1334261291 +0400

Initialize TLS before any application code is run.

Since e19d702b8e33, dlsym and friends use recursive mutexes that
require the current thread id, which is not available before the libc
constructor. This prevents us from using dlsym() in .preinit_array.

This change moves TLS initialization from libc constructor to the earliest
possible point - immediately after linker itself is relocated. As a result,
pthread_internal_t for the initial thread is available from the start.

As a bonus, values stored in TLS in .preinit_array are not lost when libc is
initialized.

Change-Id: Iee5a710ee000173bff63e924adeb4a4c600c1e2d