svn commit: r355719 - head/sys/sys

[Brandon Bergren]

Author: bdragon
Date: Fri Dec 13 18:18:14 2019
New Revision: 355719
URL: https://svnweb.freebsd.org/changeset/base/355719

Log:
  [PowerPC] Enable TLS usage in system libraries on ELFv2.
  
  Currently, __NO_TLS is defined to 1 on powerpc64. TLS usage works much
  better on ELFv2 due to the modern tooling, so take the opportunity to
  reenable TLS on ELFv2.
  
  If you are using a self-built ELFv2 environment on powerpc64, you will
  have to run installworld twice due to RuneLocale changes. This is the only
  known regression, and if you are using the ELFv2 isos, you likely already
  have the updated libraries installed, as this change is part of the
  patchset that the isos integrate.
  
  (No UPDATING note about this because ELFv2 is still an unofficial build.)
  
  Reviewed by:	luporl, Alfredo Dal'Ava Junior <alfredo.junior at eldorado.org.br>
  Differential Revision:	https://reviews.freebsd.org/D22524

Modified:
  head/sys/sys/cdefs.h

Modified: head/sys/sys/cdefs.h
==============================================================================
--- head/sys/sys/cdefs.h	Fri Dec 13 17:52:09 2019	(r355718)
+++ head/sys/sys/cdefs.h	Fri Dec 13 18:18:14 2019	(r355719)
@@ -774,7 +774,8 @@
 #endif
 #endif /* __STDC_WANT_LIB_EXT1__ */
 
-#if defined(__mips) || defined(__powerpc64__) || defined(__riscv)
+#if defined(__mips) || defined(__riscv) || \
+    (defined(__powerpc64__) && (!defined(_CALL_ELF) || _CALL_ELF == 1))
 #define	__NO_TLS 1
 #endif