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authorStefan Liebler <stli@linux.ibm.com>2018-12-18 13:57:19 +0100
committerStefan Liebler <stli@linux.ibm.com>2018-12-18 13:57:19 +0100
commit0582e4284529b4ea0fcd1a8973ccab7d95ec0e87 (patch)
tree08dd0fbd46d8468091946bcfeb4e91ea1abdd50d /sysdeps/s390/wcpcpy-c.c
parent804f2e5c73b1363836ce5db29a0abb3d36e1286a (diff)
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S390: Refactor wcpcpy ifunc handling.
The ifunc handling for wcpcpy is adjusted in order to omit ifunc
if the minimum architecture level already supports newer CPUs by default.
Unfortunately the c ifunc variant can't be omitted at all as it is used
by the z13 ifunc variant as fallback if the pointers are not 4-byte aligned.

ChangeLog:

	* sysdeps/s390/multiarch/Makefile
	(sysdep_routines): Remove wcpcpy variants.
	* sysdeps/s390/Makefile (sysdep_routines): Add wcpcpy variants.
	* sysdeps/s390/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list): Refactor ifunc handling for wcpcpy.
	* sysdeps/s390/multiarch/wcpcpy-c.c: Move to ...
	* sysdeps/s390/wcpcpy-c.c: ... here and adjust ifunc handling.
	* sysdeps/s390/multiarch/wcpcpy-vx.S: Move to ...
	* sysdeps/s390/wcpcpy-vx.S: ... here and adjust ifunc handling.
	* sysdeps/s390/multiarch/wcpcpy.c: Move to ...
	* sysdeps/s390/wcpcpy.c: ... here and adjust ifunc handling.
	* sysdeps/s390/ifunc-wcpcpy.h: New file.
Diffstat (limited to 'sysdeps/s390/wcpcpy-c.c')
-rw-r--r--sysdeps/s390/wcpcpy-c.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/sysdeps/s390/wcpcpy-c.c b/sysdeps/s390/wcpcpy-c.c
new file mode 100644
index 0000000000..ed1539cde2
--- /dev/null
+++ b/sysdeps/s390/wcpcpy-c.c
@@ -0,0 +1,27 @@
+/* Default wcslen implementation for S/390.
+   Copyright (C) 2015-2018 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/>.  */
+
+#include <ifunc-wcpcpy.h>
+
+#if HAVE_WCPCPY_C
+# if HAVE_WCPCPY_IFUNC || HAVE_WCPCPY_Z13
+#  define WCPCPY WCPCPY_C
+# endif
+
+# include <wcsmbs/wcpcpy.c>
+#endif