PowerPC: strnlen ifunc for PPC32

6 files changed, 90 insertions, 5 deletions

diff --git a/sysdeps/powerpc/powerpc32/multiarch/Makefile b/sysdeps/powerpc/powerpc32/multiarch/Makefile
index 22deb17..e5981f4 100644
--- a/sysdeps/powerpc/powerpc32/multiarch/Makefile
+++ b/sysdeps/powerpc/powerpc32/multiarch/Makefile
@@ -3,5 +3,6 @@ sysdep_routines += memcpy-power7 memcpy-a2 memcpy-power6 memcpy-cell \
 		   memcmp-power7 memset-power4 memset-power6 memset-power7 \
 		   bzero-power4 bzero-power6 bzero-power7 \
 		   strncmp-power7 strncmp-power4 strlen-power7 \
-                   strcasecmp-power7 strcasecmp_l-power7
+                   strcasecmp-power7 strcasecmp_l-power7 \
+		   strnlen-power7 strnlen-c
 endif
diff --git a/sysdeps/powerpc/powerpc32/multiarch/ifunc-impl-list.c b/sysdeps/powerpc/powerpc32/multiarch/ifunc-impl-list.c
index 7ca97ac..7975c00 100644
--- a/sysdeps/powerpc/powerpc32/multiarch/ifunc-impl-list.c
+++ b/sysdeps/powerpc/powerpc32/multiarch/ifunc-impl-list.c
@@ -106,6 +106,13 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
 			      __strcasecmp_l_power7)
 	      IFUNC_IMPL_ADD (array, i, strcasecmp_l, 1,
 			      __strcasecmp_l_ppc32))
+
+  IFUNC_IMPL (i, name, strnlen,
+	      IFUNC_IMPL_ADD (array, i, strnlen,
+			      hwcap & PPC_FEATURE_HAS_VSX,
+			      __strnlen_power7)
+	      IFUNC_IMPL_ADD (array, i, strnlen, 1,
+			      __strnlen_ppc32))
 #endif
 
   return i;
diff --git a/sysdeps/powerpc/powerpc32/multiarch/rtld-strnlen.c b/sysdeps/powerpc/powerpc32/multiarch/rtld-strnlen.c
new file mode 100644
index 0000000..1aa5440
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/multiarch/rtld-strnlen.c
@@ -0,0 +1 @@
+#include <string/strnlen.c>
diff --git a/sysdeps/powerpc/powerpc32/multiarch/strnlen-c.c b/sysdeps/powerpc/powerpc32/multiarch/strnlen-c.c
new file mode 100644
index 0000000..cc27cc1
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/multiarch/strnlen-c.c
@@ -0,0 +1,8 @@
+#define STRNLEN  __strnlen_ppc32
+#ifdef SHARED
+# undef libc_hidden_def
+# define libc_hidden_def(name)  \
+  __hidden_ver1 (__strnlen_ppc32, __GI_strnlen, __strnlen_ppc32);
+#endif
+
+#include "string/strnlen.c"
diff --git a/sysdeps/powerpc/powerpc32/power7/strnlen.S b/sysdeps/powerpc/powerpc32/multiarch/strnlen-power7.S
index ed08836..63ac821 100644
--- a/sysdeps/powerpc/powerpc32/power7/strnlen.S
+++ b/sysdeps/powerpc/powerpc32/multiarch/strnlen-power7.S
@@ -21,7 +21,7 @@
 
 /* int [r3] strnlen (char *s [r3], int size [r4])  */
 	.machine  power7
-ENTRY (__strnlen)
+ENTRY (__strnlen_power7)
 	CALL_MCOUNT
 	dcbt	0,r3
 	clrrwi	r8,r3,2	      /* Align the address to word boundary.  */
@@ -164,6 +164,4 @@ L(loop_small):
 	cmplw	r9,r7
 	bge	L(end_max)
 	b	L(loop_small)
-END (__strnlen)
-weak_alias (__strnlen, strnlen)
-libc_hidden_builtin_def (strnlen)
+END (__strnlen_power7)
diff --git a/sysdeps/powerpc/powerpc32/multiarch/strnlen.S b/sysdeps/powerpc/powerpc32/multiarch/strnlen.S
new file mode 100644
index 0000000..1b3f46e
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/multiarch/strnlen.S
@@ -0,0 +1,70 @@
+/* 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>
+#include <rtld-global-offsets.h>
+
+/* Define multiple versions only for the definition in libc.  */
+#ifndef NOT_IN_libc
+	.text
+ENTRY(__strnlen)
+	.type   __strnlen, @gnu_indirect_function
+# ifdef PIC
+	mflr	r6
+	cfi_register (lr,r6)
+	SETUP_GOT_ACCESS (r5,got_label)
+	addis	r5,r5,_GLOBAL_OFFSET_TABLE_-got_label@ha
+	addi	r5,r5,_GLOBAL_OFFSET_TABLE_-got_label@l
+	mtlr	r6
+	cfi_same_value (lr)
+#  ifdef SHARED
+	lwz	r6,_rtld_global_ro@got(r5)
+	/* If _rtld_global_ro is not initialized use the default ppc32
+	   implementation.  */
+	cmplwi  r6,0
+	beq	L(ppc32)
+	lwz	r6,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET+4(r6)
+#  else
+	lwz     r6,_dl_hwcap@got(r5)
+	lwz	r6,4(r6)
+#  endif
+# else /* PIC  */
+	lis	r6,(_dl_hwcap+4)@ha
+	lwz	r6,(_dl_hwcap+4)@l(r6)
+# endif
+	andi.	r7,r6,PPC_FEATURE_HAS_VSX
+	bne	L(power7)
+L(ppc32):
+# ifdef PIC
+	lwz	r3,__strnlen_ppc32@got(r5)
+# else
+	lis	r3,__strnlen_ppc32@ha
+	lwz	r3,__strnlen_ppc32@l(r3)
+# endif
+	blr
+L(power7):
+# ifdef PIC
+	lwz	r3,__strnlen_power7@got(r5)
+# else
+	lis	r3,__strnlen_power7@ha
+	lwz	r3,__strnlen_power7@l(r3)
+# endif
+	blr
+END(__strnlen)
+
+weak_alias (__strnlen, strnlen)
+#endif