From de7ee73d6f5000478173ac065ded4077fd6ddee2 Mon Sep 17 00:00:00 2001
From: Alan Modra <amodra@gmail.com>
Date: Wed, 14 Jun 2017 10:44:59 +0930
Subject: PowerPC64 strncpy, stpncpy and strstr fixes

Makes __stpncpy_power8 call __memset_power8 directly rather than via an
IFUNC.  Fixes a missing _mcount, and removes some redundant NOPS.  The
*_is_local defines are also used in a followup patch.

	* sysdeps/powerpc/powerpc64/multiarch/strncpy-power7.S: Define
	MEMSET_is_local.
	* sysdeps/powerpc/powerpc64/multiarch/strncpy-power8.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/stpncpy-power7.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/stpncpy-power8.S: Likewise.
	Define MEMSET.
	* sysdeps/powerpc/powerpc64/multiarch/strstr-power7.S: Define
	STRLEN_is_local, STRNLEN_is_local, and STRCHR_is_local.
	* sysdeps/powerpc/powerpc64/power7/strstr.S: Likewise.  Don't add
	nop after local calls.
	* sysdeps/powerpc/powerpc64/power7/strncpy.S: Define MEMSET_is_local.
	Don't add nop after local call.
	* sysdeps/powerpc/powerpc64/power8/strncpy.S: Likewise.  Add missing
	CALL_MCOUNT.
---
 sysdeps/powerpc/powerpc64/power7/strstr.S | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'sysdeps/powerpc/powerpc64/power7/strstr.S')

diff --git a/sysdeps/powerpc/powerpc64/power7/strstr.S b/sysdeps/powerpc/powerpc64/power7/strstr.S
index 260db2ed6d..1c432534a3 100644
--- a/sysdeps/powerpc/powerpc64/power7/strstr.S
+++ b/sysdeps/powerpc/powerpc64/power7/strstr.S
@@ -34,6 +34,7 @@
    GLIBC symbol (created by libc_hidden_builtin_def).  */
 # ifdef SHARED
 #  define STRLEN   __GI_strlen
+#  define STRLEN_is_local
 # else
 #  define STRLEN   strlen
 # endif
@@ -44,6 +45,7 @@
    GLIBC symbol (created by libc_hidden_builtin_def).  */
 # ifdef SHARED
 #  define STRNLEN   __GI_strnlen
+#  define STRNLEN_is_local
 # else
 #  define STRNLEN  __strnlen
 # endif
@@ -52,6 +54,7 @@
 #ifndef STRCHR
 # ifdef SHARED
 #  define STRCHR   __GI_strchr
+#  define STRCHR_is_local
 # else
 #  define STRCHR   strchr
 # endif
@@ -86,7 +89,9 @@ EALIGN (STRSTR, 4, 0)
 	mr	r30, r4
 	mr	r3, r4
 	bl	STRLEN
+#ifndef STRLEN_is_local
 	nop
+#endif
 
 	cmpdi	cr7, r3, 0	/* If search str is null.  */
 	beq	cr7, L(ret_r3)
@@ -95,14 +100,18 @@ EALIGN (STRSTR, 4, 0)
 	mr	r4, r3
 	mr	r3, r29
 	bl	STRNLEN
+#ifndef STRNLEN_is_local
 	nop
+#endif
 
 	cmpd	cr7, r3, r31 	/* If len(r3) < len(r4).  */
 	blt	cr7, L(retnull)
 	mr	r3, r29
 	lbz	r4, 0(r30)
 	bl	STRCHR
+#ifndef STRCHR_is_local
 	nop
+#endif
 
 	mr	r11, r3
 	/* If first char of search str is not present.  */
@@ -334,7 +343,9 @@ L(begin):
 	beq	cr7, L(default)
 	lbz	r4, 0(r30)
 	bl	STRCHR
+#ifndef STRCHR_is_local
 	nop
+#endif
 	/* If first char of search str is not present.  */
 	cmpdi	cr7, r3, 0
 	ble	cr7, L(end)
@@ -437,7 +448,9 @@ L(nextbyte):
 	beq	cr7, L(default)
 	lbz	r4, 0(r30)
 	bl	STRCHR
+#ifndef STRCHR_is_local
 	nop
+#endif
 	/* If first char of search str is not present.  */
 	cmpdi	cr7, r3, 0
 	ble	cr7, L(end)
-- 
cgit 1.4.1