diff --git a/sysdeps/powerpc/powerpc64/le/power9/stpncpy.S b/sysdeps/powerpc/powerpc64/le/power9/stpncpy.S
new file mode 100644
index 0000000000..a96840bb6f
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/le/power9/stpncpy.S
@@ -0,0 +1,24 @@
+/* Optimized stpncpy implementation for PowerPC64/POWER9.
+ Copyright (C) 2015-2020 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
+ . */
+
+#define USE_AS_STPNCPY
+#include
+
+weak_alias (__stpncpy, stpncpy)
+libc_hidden_def (__stpncpy)
+libc_hidden_builtin_def (stpncpy)
diff --git a/sysdeps/powerpc/powerpc64/le/power9/strncpy.S b/sysdeps/powerpc/powerpc64/le/power9/strncpy.S
index cde68384d4..64b06a9040 100644
--- a/sysdeps/powerpc/powerpc64/le/power9/strncpy.S
+++ b/sysdeps/powerpc/powerpc64/le/power9/strncpy.S
@@ -18,16 +18,30 @@
#include
+#ifdef USE_AS_STPNCPY
+# ifndef STPNCPY
+# define FUNC_NAME __stpncpy
+# else
+# define FUNC_NAME STPNCPY
+# endif
+#else
# ifndef STRNCPY
# define FUNC_NAME strncpy
# else
# define FUNC_NAME STRNCPY
# endif
+#endif /* !USE_AS_STPNCPY */
/* Implements the function
char * [r3] strncpy (char *dest [r3], const char *src [r4], size_t n [r5])
+ or
+
+ char * [r3] stpncpy (char *dest [r3], const char *src [r4], size_t n [r5])
+
+ if USE_AS_STPNCPY is defined.
+
The implementation can load bytes past a null terminator, but only
up to the next 16B boundary, so it never crosses a page. */
@@ -47,6 +61,13 @@ ENTRY_TOCLESS (FUNC_NAME, 4)
beq L(zero_padding_loop)
cmpwi r5,0
+#ifdef USE_AS_STPNCPY
+ bgt L(cont)
+ /* stpncpy returns the dest address plus the size not counting the
+ final '\0'. */
+ addi r3,r3,1
+ blr
+#endif
beqlr
L(cont):
@@ -77,12 +98,22 @@ L(cont):
sldi r10,r5,56 /* stxvl wants size in top 8 bits */
stxvl 32+v0,r11,r10 /* Partial store */
+#ifdef USE_AS_STPNCPY
+ /* stpncpy returns the dest address plus the size not counting the
+ final '\0'. */
+ add r3,r11,r5
+#endif
blr
L(null):
sldi r10,r8,56 /* stxvl wants size in top 8 bits */
stxvl 32+v0,r11,r10 /* Partial store */
+#ifdef USE_AS_STPNCPY
+ /* stpncpy returns the dest address plus the size not counting the
+ final '\0'. */
+ add r3,r11,r7
+#endif
add r11,r11,r8
sub r5,r5,r8
b L(zero_padding_loop)
@@ -164,6 +195,11 @@ L(n_tail4):
sldi r10,r5,56 /* stxvl wants size in top 8 bits */
addi r11,r11,48 /* Offset */
stxvl 32+v3,r11,r10 /* Partial store */
+#ifdef USE_AS_STPNCPY
+ /* stpncpy returns the dest address plus the size not counting the
+ final '\0'. */
+ add r3,r11,r5
+#endif
blr
L(prep_n_tail1):
@@ -174,6 +210,11 @@ L(prep_n_tail1):
L(n_tail1):
sldi r10,r5,56 /* stxvl wants size in top 8 bits */
stxvl 32+v0,r11,r10 /* Partial store */
+#ifdef USE_AS_STPNCPY
+ /* stpncpy returns the dest address plus the size not counting the
+ final '\0'. */
+ add r3,r11,r5
+#endif
blr
L(prep_n_tail2):
@@ -186,6 +227,11 @@ L(n_tail2):
sldi r10,r5,56 /* stxvl wants size in top 8 bits */
addi r11,r11,16 /* offset */
stxvl 32+v1,r11,r10 /* Partial store */
+#ifdef USE_AS_STPNCPY
+ /* stpncpy returns the dest address plus the size not counting the
+ final '\0'. */
+ add r3,r11,r5
+#endif
blr
L(prep_n_tail3):
@@ -199,6 +245,11 @@ L(n_tail3):
sldi r10,r5,56 /* stxvl wants size in top 8 bits */
addi r11,r11,32 /* Offset */
stxvl 32+v2,r11,r10 /* Partial store */
+#ifdef USE_AS_STPNCPY
+ /* stpncpy returns the dest address plus the size not counting the
+ final '\0'. */
+ add r3,r11,r5
+#endif
blr
L(prep_tail1):
@@ -208,6 +259,11 @@ L(tail1):
addi r9,r8,1 /* Add null terminator */
sldi r10,r9,56 /* stxvl wants size in top 8 bits */
stxvl 32+v0,r11,r10 /* Partial store */
+#ifdef USE_AS_STPNCPY
+ /* stpncpy returns the dest address plus the size not counting the
+ final '\0'. */
+ add r3,r11,r8
+#endif
add r11,r11,r9
sub r5,r5,r9
b L(zero_padding_loop)
@@ -222,6 +278,11 @@ L(tail2):
sldi r10,r9,56 /* stxvl wants size in top 8 bits */
addi r11,r11,16 /* offset */
stxvl 32+v1,r11,r10 /* Partial store */
+#ifdef USE_AS_STPNCPY
+ /* stpncpy returns the dest address plus the size not counting the
+ final '\0'. */
+ add r3,r11,r8
+#endif
add r11,r11,r9
sub r5,r5,r9
b L(zero_padding_loop)
@@ -237,6 +298,11 @@ L(tail3):
sldi r10,r9,56 /* stxvl wants size in top 8 bits */
addi r11,r11,32 /* offset */
stxvl 32+v2,r11,r10 /* Partial store */
+#ifdef USE_AS_STPNCPY
+ /* stpncpy returns the dest address plus the size not counting the
+ final '\0'. */
+ add r3,r11,r8
+#endif
add r11,r11,r9
sub r5,r5,r9
b L(zero_padding_loop)
@@ -252,6 +318,11 @@ L(tail4):
sldi r10,r9,56 /* stxvl wants size in top 8 bits */
addi r11,r11,48 /* offset */
stxvl 32+v3,r11,r10 /* Partial store */
+#ifdef USE_AS_STPNCPY
+ /* stpncpy returns the dest address plus the size not counting the
+ final '\0'. */
+ add r3,r11,r8
+#endif
add r11,r11,r9
sub r5,r5,r9
@@ -274,3 +345,6 @@ L(zero_padding_end):
L(n_tail):
END (FUNC_NAME)
+#ifndef USE_AS_STPNCPY
+libc_hidden_builtin_def (strncpy)
+#endif
diff --git a/sysdeps/powerpc/powerpc64/multiarch/Makefile b/sysdeps/powerpc/powerpc64/multiarch/Makefile
index cd2b47b403..f46bf50732 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/Makefile
+++ b/sysdeps/powerpc/powerpc64/multiarch/Makefile
@@ -33,7 +33,7 @@ sysdep_routines += memcpy-power8-cached memcpy-power7 memcpy-a2 memcpy-power6 \
ifneq (,$(filter %le,$(config-machine)))
sysdep_routines += strcmp-power9 strncmp-power9 strcpy-power9 stpcpy-power9 \
- rawmemchr-power9 strlen-power9 strncpy-power9
+ rawmemchr-power9 strlen-power9 strncpy-power9 stpncpy-power9
endif
CFLAGS-strncase-power7.c += -mcpu=power7 -funroll-loops
CFLAGS-strncase_l-power7.c += -mcpu=power7 -funroll-loops
diff --git a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
index aa63e1c23f..56790bcfe3 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
@@ -317,6 +317,11 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/powerpc/powerpc64/multiarch/stpncpy.c. */
IFUNC_IMPL (i, name, stpncpy,
+#ifdef __LITTLE_ENDIAN__
+ IFUNC_IMPL_ADD (array, i, stpncpy,
+ hwcap2 & PPC_FEATURE2_ARCH_3_00,
+ __stpncpy_power9)
+#endif
IFUNC_IMPL_ADD (array, i, stpncpy,
hwcap2 & PPC_FEATURE2_ARCH_2_07,
__stpncpy_power8)
diff --git a/sysdeps/powerpc/powerpc64/multiarch/stpncpy-power9.S b/sysdeps/powerpc/powerpc64/multiarch/stpncpy-power9.S
new file mode 100644
index 0000000000..ecbbb5c8e9
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/multiarch/stpncpy-power9.S
@@ -0,0 +1,24 @@
+/* Optimized stpncpy implementation for POWER9/PPC64.
+ Copyright (C) 2015-2020 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
+ . */
+
+#define STPNCPY __stpncpy_power9
+
+#undef libc_hidden_builtin_def
+#define libc_hidden_builtin_def(name)
+
+#include
diff --git a/sysdeps/powerpc/powerpc64/multiarch/stpncpy.c b/sysdeps/powerpc/powerpc64/multiarch/stpncpy.c
index 17df886431..21702716a3 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/stpncpy.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/stpncpy.c
@@ -26,10 +26,17 @@
extern __typeof (__stpncpy) __stpncpy_ppc attribute_hidden;
extern __typeof (__stpncpy) __stpncpy_power7 attribute_hidden;
extern __typeof (__stpncpy) __stpncpy_power8 attribute_hidden;
+# ifdef __LITTLE_ENDIAN__
+extern __typeof (__stpncpy) __stpncpy_power9 attribute_hidden;
+# endif
# undef stpncpy
# undef __stpncpy
libc_ifunc_redirected (__redirect___stpncpy, __stpncpy,
+# ifdef __LITTLE_ENDIAN__
+ (hwcap2 & PPC_FEATURE2_ARCH_3_00)
+ ? __stpncpy_power9 :
+# endif
(hwcap2 & PPC_FEATURE2_ARCH_2_07)
? __stpncpy_power8
: (hwcap & PPC_FEATURE_HAS_VSX)