commit 45024fefe7507574faa0653b92c04536b36eb6ab
author Ryan Prichard <rprichard@google.com> Sun Dec 30 21:10:26 2018 -0800
committer Ryan Prichard <rprichard@google.com> Mon Jan 07 20:30:35 2019 -0800
tree 40f657c63af98330eee9d1c2236bc7f522ad8b65
parent e7964158cedf37b50e42ab1988e67eb2154c74f2

Add ARM EABI function __aeabi_read_tp

By default, Clang uses this arm32 function to read the thread pointer,
either for ELF TLS or via __builtin_thread_pointer(). It's probably better
to inline the cp15 access using -mtp=cp15, but that's not the default yet.

See https://reviews.llvm.org/D34878?id=114573.

Bug: http://b/78026329
Test: bionic unit tests
Change-Id: I93b8926075f0b2cea8df9ef518d54f2820a8ff5b

libc/libc.map.txt

diff --git a/libc/libc.map.txt b/libc/libc.map.txt
index 4b8463f..f78014d 100644
--- a/libc/libc.map.txt
+++ b/libc/libc.map.txt
@@ -1446,6 +1446,7 @@
 
 LIBC_Q { # introduced=Q
   global:
+    __aeabi_read_tp; # arm
     __res_randomid;
     android_fdsan_close_with_tag;
     android_fdsan_create_owner_tag;