Add VDSO support to sparc.

	* sysdeps/unix/sysv/linux/sparc/init-first.c: New file.
	* sysdeps/unix/sysv/linux/sparc/libc-vdso.h: New file.
	* sysdeps/unix/sysv/linux/sparc/Makefile: Add dl-vdso to
	sysdep_routines in subdir elf.
	* sysdeps/unix/sysv/linux/sparc/Versions: Add GLIBC_PRIVATE
	version for __vdso_clock_gettime.
	* sysdeps/unix/sysv/linux/sparc/sysdep.h (INTERNAL_VSYSCALL_CALL):
	Define.
	(HAVE_CLOCK_GETTIME_VSYSCALL): Define.
	(HAVE_GETTIMEOFDAY_VSYSCALL): Define.

1 files changed, 46 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/sparc/init-first.c b/sysdeps/unix/sysv/linux/sparc/init-first.c
new file mode 100644
index 0000000000..7700cdfe1f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sparc/init-first.c
@@ -0,0 +1,46 @@
+/* SPARC VDSO initialization
+   Copyright (C) 2018 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifdef SHARED
+# include <dl-vdso.h>
+# include <libc-vdso.h>
+
+long int (*VDSO_SYMBOL (gettimeofday)) (struct timeval *, void *)
+    attribute_hidden;
+long int (*VDSO_SYMBOL (clock_gettime)) (clockid_t, struct timespec *)
+    attribute_hidden;
+
+static inline void
+_libc_vdso_platform_setup (void)
+{
+  PREPARE_VERSION_KNOWN (linux_version, LINUX_2_6);
+
+  void *p = _dl_vdso_vsym ("__vdso_gettimeofday", &linux_version);
+  PTR_MANGLE (p);
+  VDSO_SYMBOL (gettimeofday) = p;
+
+  p = _dl_vdso_vsym ("__vdso_clock_gettime", &linux_version);
+  PTR_MANGLE (p);
+  VDSO_SYMBOL (clock_gettime) = p;
+}
+
+# define VDSO_SETUP _libc_vdso_platform_setup
+#endif
+
+#include <csu/init-first.c>