PowerPC: multiarch strchrnul for PowerPC32

ChangeLog

@@ -1,3 +1,18 @@
+2013-12-06  Adhemerval Zanella  <azanella@linux.vnet.ibm.com>
+
+	* string/strchrnul.c (__strchrnul): Using macro to redefine symbol
+	name.
+	* sysdeps/powerpc/powerpc32/power4//multiarch/strchrnul-power7.S: New
+	file.
+	* sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul-ppc32.c: New
+	file.
+	* sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul.c: New file:
+	multiarch strchrnul for PPC32.
+	* sysdeps/powerpc/powerpc32/power4/multiarch/Makefile: Added strchrnul
+	multiarch objects.
+	* sysdeps/powerpc/powerpc32/power4/multiarch/ifunc-impl-list
+	(__libc_ifunc_impl_list): Likewise.
+
 2013-12-06  Adhemerval Zanella  <azanella@linux.vnet.ibm.com>
 
 	* sysdeps/powerpc/powerpc32/power4/multiarch/strncase-power7.c: New

string/strchrnul.c

@@ -27,9 +27,13 @@
 #undef __strchrnul
 #undef strchrnul
 
+#ifndef STRCHRNUL
+# define STRCHRNUL __strchrnul
+#endif
+
 /* Find the first occurrence of C in S or the final NUL byte.  */
 char *
-__strchrnul (s, c_in)
+STRCHRNUL (s, c_in)
      const char *s;
      int c_in;
 {

sysdeps/powerpc/powerpc32/power4/multiarch/Makefile

@@ -7,7 +7,7 @@ sysdep_routines += memcpy-power7 memcpy-a2 memcpy-power6 memcpy-cell \
 		   rawmemchr-ppc32 strlen-power7 strlen-ppc32 strnlen-power7 \
 		   strnlen-ppc32 strncmp-power7 strncmp-ppc32 \
 		   strcasecmp-power7 strcasecmp_l-power7 strncase-power7 \
-		   strncase_l-power7
+		   strncase_l-power7 strchrnul-power7 strchrnul-ppc32
 
 CFLAGS-strncase-power7.c += -mcpu=power7 -funroll-loops
 CFLAGS-strncase_l-power7.c += -mcpu=power7 -funroll-loops

sysdeps/powerpc/powerpc32/power4/multiarch/ifunc-impl-list.c

@@ -165,5 +165,13 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
 	      IFUNC_IMPL_ADD (array, i, strncasecmp_l, 1,
 			      __strncasecmp_l_ppc))
 
+  /* Support sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul.c.  */
+  IFUNC_IMPL (i, name, strchrnul,
+	      IFUNC_IMPL_ADD (array, i, strchrnul,
+			      hwcap & PPC_FEATURE_HAS_VSX,
+			      __strchrnul_power7)
+	      IFUNC_IMPL_ADD (array, i, strchrnul, 1,
+			      __strchrnul_ppc))
+
   return i;
 }

sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul-power7.S

@@ -0,0 +1,39 @@
+/* Optimized strchrnul implementation for PowerPC32/POWER7 using cmpb insn.
+   Copyright (C) 2013 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 <sysdep.h>
+
+#undef ENTRY
+#define ENTRY(name)						\
+ .globl C_SYMBOL_NAME(__strchrnul_power7);			\
+ .type C_SYMBOL_NAME(__strchrnul_power7),@function;		\
+ C_LABEL(__strchrnul_power7)					\
+ cfi_startproc;
+
+#undef END
+#define END(name)						\
+ cfi_endproc;							\
+ ASM_SIZE_DIRECTIVE(__strchrnul_power7)
+
+#undef weak_alias
+#define weak_alias(name, alias)
+
+#undef libc_hidden_builtin_def
+#define libc_hidden_builtin_def(name)
+
+#include <sysdeps/powerpc/powerpc32/power7/strchrnul.S>

sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul-ppc32.c

@@ -0,0 +1,28 @@
+/* PowerPC32 default implementation of strchrnul.
+   Copyright (C) 2013 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 <string.h>
+
+#define STRCHRNUL  __strchrnul_ppc
+
+#undef weak_alias
+#define weak_alias(a,b )
+
+extern __typeof (strchrnul) __strchrnul_ppc attribute_hidden;
+
+#include <string/strchrnul.c>

sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul.c

@@ -0,0 +1,37 @@
+/* Multiple versions of strchrnul.
+   Copyright (C) 2013 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/>.  */
+
+#ifndef NOT_IN_libc
+# include <string.h>
+# include <shlib-compat.h>
+# include "init-arch.h"
+
+extern __typeof (__strchrnul) __strchrnul_ppc attribute_hidden;
+extern __typeof (__strchrnul) __strchrnul_power7 attribute_hidden;
+
+/* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
+   ifunc symbol properly.  */
+libc_ifunc (__strchrnul,
+	    (hwcap & PPC_FEATURE_HAS_VSX)
+            ? __strchrnul_power7
+            : __strchrnul_ppc);
+
+weak_alias (__strchrnul, strchrnul)
+#else
+#include <string/strchrnul.c>
+#endif