Add hidden_tls_def macros, fix powerpc-soft build with GCC 9.

Soft-float powerpc fails to build with current GCC mainline because of
use of libc_hidden_data_def for TLS variables, resulting in a non-TLS
alias being defined, to which the tls_model attribute is now copied,
resulting in a warning about it being ignored.

The problem here appears to be the non-TLS alias.  This patch adds a
hidden_tls_def macro family, corresponding to the hidden_tls_proto
macros, to define TLS aliases properly in such a case, and uses it for
those powerpc soft-float variables.

Tested with build-many-glibcs.py compilers build for powerpc-linux-gnu
soft-float.  Also tested for x86_64.

	* include/libc-symbols.h [SHARED && !NO_HIDDEN && !__ASSEMBLER__]
	(__hidden_ver2): New macro.  Use old definition of __hidden_ver1
	with additional parameter thread.
	[SHARED && !NO_HIDDEN && !__ASSEMBLER__] (__hidden_ver1): Define
	in terms of __hidden_ver2.
	(hidden_tls_def): New macro.
	(libc_hidden_tls_def): Likewise.
	(rtld_hidden_tls_def): Likewise.
	(libm_hidden_tls_def): Likewise.
	(libmvec_hidden_tls_def): Likewise.
	(libresolv_hidden_tls_def): Likewise.
	(librt_hidden_tls_def): Likewise.
	(libdl_hidden_tls_def): Likewise.
	(libnss_files_hidden_tls_def): Likewise.
	(libnsl_hidden_tls_def): Likewise.
	(libnss_nisplus_hidden_tls_def): Likewise.
	(libutil_hidden_tls_def): Likewise.
	(libutil_hidden_tls_def): Likweise.
	* sysdeps/powerpc/nofpu/sim-full.c (__sim_exceptions_thread): Use
	libc_hidden_tls_def.
	(__sim_disabled_exceptions_thread): Likewise.
	(__sim_round_mode_thread): Likewise.

3 files changed, 57 insertions, 5 deletions

diff --git a/ChangeLog b/ChangeLog
index 8b82d3e..c7ddb7f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,28 @@
 2018-11-13  Joseph Myers  <joseph@codesourcery.com>
 
+	* include/libc-symbols.h [SHARED && !NO_HIDDEN && !__ASSEMBLER__]
+	(__hidden_ver2): New macro.  Use old definition of __hidden_ver1
+	with additional parameter thread.
+	[SHARED && !NO_HIDDEN && !__ASSEMBLER__] (__hidden_ver1): Define
+	in terms of __hidden_ver2.
+	(hidden_tls_def): New macro.
+	(libc_hidden_tls_def): Likewise.
+	(rtld_hidden_tls_def): Likewise.
+	(libm_hidden_tls_def): Likewise.
+	(libmvec_hidden_tls_def): Likewise.
+	(libresolv_hidden_tls_def): Likewise.
+	(librt_hidden_tls_def): Likewise.
+	(libdl_hidden_tls_def): Likewise.
+	(libnss_files_hidden_tls_def): Likewise.
+	(libnsl_hidden_tls_def): Likewise.
+	(libnss_nisplus_hidden_tls_def): Likewise.
+	(libutil_hidden_tls_def): Likewise.
+	(libutil_hidden_tls_def): Likweise.
+	* sysdeps/powerpc/nofpu/sim-full.c (__sim_exceptions_thread): Use
+	libc_hidden_tls_def.
+	(__sim_disabled_exceptions_thread): Likewise.
+	(__sim_round_mode_thread): Likewise.
+
 	* sysdeps/sparc/sparc-ifunc.h [SHARED]
 	(sparc_ifunc_redirected_hidden_def): Use __attribute_copy__ to
 	copy attributes from name.
diff --git a/include/libc-symbols.h b/include/libc-symbols.h
index e71a479..4dbefd5 100644
--- a/include/libc-symbols.h
+++ b/include/libc-symbols.h
@@ -538,14 +538,19 @@ for linking")
 #  define __hidden_asmname1(prefix, name) __hidden_asmname2(prefix, name)
 #  define __hidden_asmname2(prefix, name) #prefix name
 #  define __hidden_ver1(local, internal, name) \
-  extern __typeof (name) __EI_##name __asm__(__hidden_asmname (#internal)); \
-  extern __typeof (name) __EI_##name \
+  __hidden_ver2 (, local, internal, name)
+#  define __hidden_ver2(thread, local, internal, name)			\
+  extern thread __typeof (name) __EI_##name \
+    __asm__(__hidden_asmname (#internal));  \
+  extern thread __typeof (name) __EI_##name \
     __attribute__((alias (__hidden_asmname (#local))))	\
     __attribute_copy__ (name)
 #  define hidden_ver(local, name)	__hidden_ver1(local, __GI_##name, name);
 #  define hidden_data_ver(local, name)	hidden_ver(local, name)
 #  define hidden_def(name)		__hidden_ver1(__GI_##name, name, name);
 #  define hidden_data_def(name)		hidden_def(name)
+#  define hidden_tls_def(name)				\
+  __hidden_ver2 (__thread, __GI_##name, name, name);
 #  define hidden_weak(name) \
 	__hidden_ver1(__GI_##name, name, name) __attribute__((weak));
 #  define hidden_data_weak(name)	hidden_weak(name)
@@ -573,6 +578,7 @@ for linking")
 #  define hidden_weak(name)	hidden_def (name)
 #  define hidden_ver(local, name) strong_alias (local, __GI_##name)
 #  define hidden_data_def(name)	strong_data_alias (name, __GI_##name)
+#  define hidden_tls_def(name)	hidden_data_def (name)
 #  define hidden_data_weak(name)	hidden_data_def (name)
 #  define hidden_data_ver(local, name) strong_data_alias (local, __GI_##name)
 #  define HIDDEN_JUMPTARGET(name) __GI_##name
@@ -602,6 +608,7 @@ for linking")
 # define hidden_ver(local, name)
 # define hidden_data_weak(name)
 # define hidden_data_def(name)
+# define hidden_tls_def(name)
 # define hidden_data_ver(local, name)
 # define hidden_nolink(name, lib, version)
 #endif
@@ -619,6 +626,7 @@ for linking")
 # endif
 # define libc_hidden_ver(local, name) hidden_ver (local, name)
 # define libc_hidden_data_def(name) hidden_data_def (name)
+# define libc_hidden_tls_def(name) hidden_tls_def (name)
 # define libc_hidden_data_weak(name) hidden_data_weak (name)
 # define libc_hidden_data_ver(local, name) hidden_data_ver (local, name)
 #else
@@ -628,6 +636,7 @@ for linking")
 # define libc_hidden_weak(name)
 # define libc_hidden_ver(local, name)
 # define libc_hidden_data_def(name)
+# define libc_hidden_tls_def(name)
 # define libc_hidden_data_weak(name)
 # define libc_hidden_data_ver(local, name)
 #endif
@@ -639,6 +648,7 @@ for linking")
 # define rtld_hidden_weak(name) hidden_weak (name)
 # define rtld_hidden_ver(local, name) hidden_ver (local, name)
 # define rtld_hidden_data_def(name) hidden_data_def (name)
+# define rtld_hidden_tls_def(name) hidden_tls_def (name)
 # define rtld_hidden_data_weak(name) hidden_data_weak (name)
 # define rtld_hidden_data_ver(local, name) hidden_data_ver (local, name)
 #else
@@ -648,6 +658,7 @@ for linking")
 # define rtld_hidden_weak(name)
 # define rtld_hidden_ver(local, name)
 # define rtld_hidden_data_def(name)
+# define rtld_hidden_tls_def(name)
 # define rtld_hidden_data_weak(name)
 # define rtld_hidden_data_ver(local, name)
 #endif
@@ -659,6 +670,7 @@ for linking")
 # define libm_hidden_weak(name) hidden_weak (name)
 # define libm_hidden_ver(local, name) hidden_ver (local, name)
 # define libm_hidden_data_def(name) hidden_data_def (name)
+# define libm_hidden_tls_def(name) hidden_tls_def (name)
 # define libm_hidden_data_weak(name) hidden_data_weak (name)
 # define libm_hidden_data_ver(local, name) hidden_data_ver (local, name)
 #else
@@ -668,6 +680,7 @@ for linking")
 # define libm_hidden_weak(name)
 # define libm_hidden_ver(local, name)
 # define libm_hidden_data_def(name)
+# define libm_hidden_tls_def(name)
 # define libm_hidden_data_weak(name)
 # define libm_hidden_data_ver(local, name)
 #endif
@@ -679,6 +692,7 @@ for linking")
 # define libmvec_hidden_weak(name) hidden_weak (name)
 # define libmvec_hidden_ver(local, name) hidden_ver (local, name)
 # define libmvec_hidden_data_def(name) hidden_data_def (name)
+# define libmvec_hidden_tls_def(name) hidden_tls_def (name)
 # define libmvec_hidden_data_weak(name) hidden_data_weak (name)
 # define libmvec_hidden_data_ver(local, name) hidden_data_ver (local, name)
 #else
@@ -688,6 +702,7 @@ for linking")
 # define libmvec_hidden_weak(name)
 # define libmvec_hidden_ver(local, name)
 # define libmvec_hidden_data_def(name)
+# define libmvec_hidden_tls_def(name)
 # define libmvec_hidden_data_weak(name)
 # define libmvec_hidden_data_ver(local, name)
 #endif
@@ -700,6 +715,7 @@ for linking")
 # define libresolv_hidden_weak(name) hidden_weak (name)
 # define libresolv_hidden_ver(local, name) hidden_ver (local, name)
 # define libresolv_hidden_data_def(name) hidden_data_def (name)
+# define libresolv_hidden_tls_def(name) hidden_tls_def (name)
 # define libresolv_hidden_data_weak(name) hidden_data_weak (name)
 # define libresolv_hidden_data_ver(local, name) hidden_data_ver (local, name)
 #else
@@ -709,6 +725,7 @@ for linking")
 # define libresolv_hidden_weak(name)
 # define libresolv_hidden_ver(local, name)
 # define libresolv_hidden_data_def(name)
+# define libresolv_hidden_tls_def(name)
 # define libresolv_hidden_data_weak(name)
 # define libresolv_hidden_data_ver(local, name)
 #endif
@@ -721,6 +738,7 @@ for linking")
 # define librt_hidden_weak(name) hidden_weak (name)
 # define librt_hidden_ver(local, name) hidden_ver (local, name)
 # define librt_hidden_data_def(name) hidden_data_def (name)
+# define librt_hidden_tls_def(name) hidden_tls_def (name)
 # define librt_hidden_data_weak(name) hidden_data_weak (name)
 # define librt_hidden_data_ver(local, name) hidden_data_ver (local, name)
 #else
@@ -730,6 +748,7 @@ for linking")
 # define librt_hidden_weak(name)
 # define librt_hidden_ver(local, name)
 # define librt_hidden_data_def(name)
+# define librt_hidden_tls_def(name)
 # define librt_hidden_data_weak(name)
 # define librt_hidden_data_ver(local, name)
 #endif
@@ -742,6 +761,7 @@ for linking")
 # define libdl_hidden_weak(name) hidden_weak (name)
 # define libdl_hidden_ver(local, name) hidden_ver (local, name)
 # define libdl_hidden_data_def(name) hidden_data_def (name)
+# define libdl_hidden_tls_def(name) hidden_tls_def (name)
 # define libdl_hidden_data_weak(name) hidden_data_weak (name)
 # define libdl_hidden_data_ver(local, name) hidden_data_ver (local, name)
 #else
@@ -751,6 +771,7 @@ for linking")
 # define libdl_hidden_weak(name)
 # define libdl_hidden_ver(local, name)
 # define libdl_hidden_data_def(name)
+# define libdl_hidden_tls_def(name)
 # define libdl_hidden_data_weak(name)
 # define libdl_hidden_data_ver(local, name)
 #endif
@@ -763,6 +784,7 @@ for linking")
 # define libnss_files_hidden_weak(name) hidden_weak (name)
 # define libnss_files_hidden_ver(local, name) hidden_ver (local, name)
 # define libnss_files_hidden_data_def(name) hidden_data_def (name)
+# define libnss_files_hidden_tls_def(name) hidden_tls_def (name)
 # define libnss_files_hidden_data_weak(name) hidden_data_weak (name)
 # define libnss_files_hidden_data_ver(local, name) hidden_data_ver(local, name)
 #else
@@ -772,6 +794,7 @@ for linking")
 # define libnss_files_hidden_weak(name)
 # define libnss_files_hidden_ver(local, name)
 # define libnss_files_hidden_data_def(name)
+# define libnss_files_hidden_tls_def(name)
 # define libnss_files_hidden_data_weak(name)
 # define libnss_files_hidden_data_ver(local, name)
 #endif
@@ -790,6 +813,7 @@ for linking")
 # define libnsl_hidden_weak(name) hidden_weak (name)
 # define libnsl_hidden_ver(local, name) hidden_ver (local, name)
 # define libnsl_hidden_data_def(name) hidden_data_def (name)
+# define libnsl_hidden_tls_def(name) hidden_tls_def (name)
 # define libnsl_hidden_data_weak(name) hidden_data_weak (name)
 # define libnsl_hidden_data_ver(local, name) hidden_data_ver (local, name)
 #else
@@ -799,6 +823,7 @@ for linking")
 # define libnsl_hidden_weak(name)
 # define libnsl_hidden_ver(local, name)
 # define libnsl_hidden_data_def(name)
+# define libnsl_hidden_tls_def(name)
 # define libnsl_hidden_data_weak(name)
 # define libnsl_hidden_data_ver(local, name)
 #endif
@@ -811,6 +836,7 @@ for linking")
 # define libnss_nisplus_hidden_weak(name) hidden_weak (name)
 # define libnss_nisplus_hidden_ver(local, name) hidden_ver (local, name)
 # define libnss_nisplus_hidden_data_def(name) hidden_data_def (name)
+# define libnss_nisplus_hidden_tls_def(name) hidden_tls_def (name)
 # define libnss_nisplus_hidden_data_weak(name) hidden_data_weak (name)
 # define libnss_nisplus_hidden_data_ver(local, name) hidden_data_ver (local, name)
 #else
@@ -820,6 +846,7 @@ for linking")
 # define libnss_nisplus_hidden_weak(name)
 # define libnss_nisplus_hidden_ver(local, name)
 # define libnss_nisplus_hidden_data_def(name)
+# define libnss_nisplus_hidden_tls_def(name)
 # define libnss_nisplus_hidden_data_weak(name)
 # define libnss_nisplus_hidden_data_ver(local, name)
 #endif
@@ -840,6 +867,7 @@ for linking")
 # define libutil_hidden_weak(name) hidden_weak (name)
 # define libutil_hidden_ver(local, name) hidden_ver (local, name)
 # define libutil_hidden_data_def(name) hidden_data_def (name)
+# define libutil_hidden_tls_def(name) hidden_tls_def (name)
 # define libutil_hidden_data_weak(name) hidden_data_weak (name)
 # define libutil_hidden_data_ver(local, name) hidden_data_ver (local, name)
 #else
@@ -849,6 +877,7 @@ for linking")
 # define libutil_hidden_weak(name)
 # define libutil_hidden_ver(local, name)
 # define libutil_hidden_data_def(name)
+# define libutil_hidden_tls_def(name)
 # define libutil_hidden_data_weak(name)
 # define libutil_hidden_data_ver(local, name)
 #endif
diff --git a/sysdeps/powerpc/nofpu/sim-full.c b/sysdeps/powerpc/nofpu/sim-full.c
index 223bf48..f18ebad 100644
--- a/sysdeps/powerpc/nofpu/sim-full.c
+++ b/sysdeps/powerpc/nofpu/sim-full.c
@@ -23,14 +23,14 @@
 
 /* Thread-local to store sticky exceptions.  */
 __thread int __sim_exceptions_thread __attribute__ ((nocommon));
-libc_hidden_data_def (__sim_exceptions_thread);
+libc_hidden_tls_def (__sim_exceptions_thread);
 
 /* By default, no exceptions should trap.  */
 __thread int __sim_disabled_exceptions_thread = 0xffffffff;
-libc_hidden_data_def (__sim_disabled_exceptions_thread);
+libc_hidden_tls_def (__sim_disabled_exceptions_thread);
 
 __thread int __sim_round_mode_thread __attribute__ ((nocommon));
-libc_hidden_data_def (__sim_round_mode_thread);
+libc_hidden_tls_def (__sim_round_mode_thread);
 
 #if SIM_GLOBAL_COMPAT
 int __sim_exceptions_global __attribute__ ((nocommon));