diff mbox

[1/8] Use gcc attribute ifunc in libc_ifunc macro instead of inline assembly due to false debuginfo.

Message ID 579B6CD8.7030607@linux.vnet.ibm.com
State Superseded
Headers show

Commit Message

Stefan Liebler July 29, 2016, 2:48 p.m. UTC
On 07/27/2016 07:28 PM, Paul E. Murphy wrote:
> I'm suspecting this attribute is not always enabled on all toolchains.
>
> Testing this out with the system toolchain on a ppc64le P8 Ubuntu 14.04 system,
> I was greeted with:
>
> ../sysdeps/powerpc/powerpc64/fpu/multiarch/s_isinf.c:35:13: error: ifunc is not supported in this configuration
>
> gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04)
>
I've tested it on a ppc64 P7 RHEL 7 system with gcc 4.8.5 and there 
gcc/binutils have ifunc support. Why is ifunc not enabled in your gcc 
but binutils supports IFUNC? Is this related to ppc64le and/or Ubuntu 
14.04 / 16.04?
Does someone know if gcc does not support ifunc on other architectures / 
distros?
>
> What is the preferred method for exposing ifunc'ed API?  I see both
> strong and weak aliases used in ppc multiarch code.  GCC claims only
> strong are supported, but both macros are used throughout ppc
> multiarch and seem to work.
This patch does not change if a symbol is weak or strong.
The current ifunc symbols reflect the behaviour of the common code.

>
> Likewise, many of the changes add an extra declaration for the
> ifunc'ed symbol.  Isn't this now handled by the __ifunc() macro?
> Can these redundant declarations be removed?
The extra declaration and the redirection is needed if you have an
internal __GI_* symbol which is directed to a dedicated fallback
variant instead of being the ifunc'ed symbol (see e.g. strncpy).

The libc_hidden_builtin_def(strncpy) creates the __GI_strncpy
symbol in sysdeps/powerpc/powerpc64/multiarch/strncpy-ppc64.c.
If gcc creates the ifunc symbol without the extra declaration and 
redirection and uses gcc-attribute-ifunc without 
libc_hidden_builtin_def(strncpy), then gcc produces an ifunced 
__GI_strncpy symbol but no strncpy symbol.
If you add the libc_hidden_builtin_def(strncpy), gcc produces
an ifunced strncpy symbol and an ifunced __GI_strncpy symbol.
In both cases you have two __GI_strncpy symbols and linking libc.so fails.

If the __GI_* symbol is ifunc'ed, too like stpcpy, you don't need the 
extra declaration and redirection.
Have a look at sysdeps/powerpc/powerpc64/multiarch/stpcpy.c.

But you are right, the extra declaration is not needed and if it is done
in the __ifunc() macro. See below.

>
> Simiarly, are all the macro redirections necessary? The redirects
> in s_finitef.c for double and long double seem unnecessary, and
> removing all them worked as expected.
Yes you are right. In s_finitef.c/s_isinff.c the redirects are not 
necessary. I can remove them.

>
> Maybe another macro like libc_ifunc_public would be useful to
> properly declare, and alias an indirect function?  That would
> simplify much ppc code.
The redirection in the header files can't be done within such a macro
because you have to do it before including the header file.
To make the declaration, the macro would need to get the redirected 
function name and the real function name. As it is only needed if 
redirection is needed, the macro name should reflect this and could be 
named libc_ifunc_redirected instead of libc_ifunc_public.
Then it could do something like that:
#define libc_ifunc_redirected (redirected_name, name, expr) \
extern typeof (redirected_name) __libc_##name __attribute__ (ifunc)\
static void *resolver(arg) {...}\
strong_alias (__libc_##name, name)

The usage in e.g. strnlen.c could be:
# define strnlen __redirect_strnlen
# define __strnlen __redirect___strnlen
# include <string.h>

extern __typeof (__strnlen) __strnlen_ppc attribute_hidden;
extern __typeof (__strnlen) __strnlen_power7 attribute_hidden;
# undef strnlen
# undef __strnlen


libc_ifunc_redirected (__redirect___strnlen, __strnlen,
             (hwcap & PPC_FEATURE_HAS_VSX)
             ? __strnlen_power7
             : __strnlen_ppc);
weak_alias (__strnlen, strnlen)

I've updated the patches with these changes.
Please have a further look.

Thanks
Stefan

Comments

Paul E. Murphy Aug. 1, 2016, 8:18 p.m. UTC | #1
On 07/29/2016 09:48 AM, Stefan Liebler wrote:
> On 07/27/2016 07:28 PM, Paul E. Murphy wrote:
>> I'm suspecting this attribute is not always enabled on all toolchains.
>>
>> Testing this out with the system toolchain on a ppc64le P8 Ubuntu 14.04 system,
>> I was greeted with:
>>
>> ../sysdeps/powerpc/powerpc64/fpu/multiarch/s_isinf.c:35:13: error: ifunc is not supported in this configuration
>>
>> gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04)
>>
> I've tested it on a ppc64 P7 RHEL 7 system with gcc 4.8.5 and there gcc/binutils have ifunc support. Why is ifunc not enabled in your gcc but binutils supports IFUNC? Is this related to ppc64le and/or Ubuntu 14.04 / 16.04?
> Does someone know if gcc does not support ifunc on other architectures / distros?

I can't shine any light onto why, but it does demonstrate the need to
update the configury to check for this case, and handle it sensibly.

Currently it only checks whether binutils supports ifunc, and enables
multiarch in the absence of more specific options passed to configure.

> Yes you are right. In s_finitef.c/s_isinff.c the redirects are not necessary. I can remove them.

I assume the same holds for the extra redirects in s_finite, s_isinf,
and s_isnan.  Otherwise, the ppc specific changes are ok.
Stefan Liebler Aug. 2, 2016, 2:07 p.m. UTC | #2
On 08/01/2016 10:18 PM, Paul E. Murphy wrote:
>
>
> On 07/29/2016 09:48 AM, Stefan Liebler wrote:
>> On 07/27/2016 07:28 PM, Paul E. Murphy wrote:
>>> I'm suspecting this attribute is not always enabled on all toolchains.
>>>
>>> Testing this out with the system toolchain on a ppc64le P8 Ubuntu 14.04 system,
>>> I was greeted with:
>>>
>>> ../sysdeps/powerpc/powerpc64/fpu/multiarch/s_isinf.c:35:13: error: ifunc is not supported in this configuration
>>>
>>> gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04)
>>>
>> I've tested it on a ppc64 P7 RHEL 7 system with gcc 4.8.5 and there gcc/binutils have ifunc support. Why is ifunc not enabled in your gcc but binutils supports IFUNC? Is this related to ppc64le and/or Ubuntu 14.04 / 16.04?
>> Does someone know if gcc does not support ifunc on other architectures / distros?
>
> I can't shine any light onto why, but it does demonstrate the need to
> update the configury to check for this case, and handle it sensibly.
>
> Currently it only checks whether binutils supports ifunc, and enables
> multiarch in the absence of more specific options passed to configure.
>
Okay. Then I can add an extra configure check to test the gcc attribute 
ifunc support. If there is no support, a fallback ifunc-macro which uses 
the old behaviour could be used. Then it won't break the build but the 
debuginfo is not correct, too. Perhaps this fallback can be removed in 
future. Do you know if gcc in Ubuntu 16.04 has ifunc support for ppc64le?

>> Yes you are right. In s_finitef.c/s_isinff.c the redirects are not necessary. I can remove them.
>
> I assume the same holds for the extra redirects in s_finite, s_isinf,
> and s_isnan.  Otherwise, the ppc specific changes are ok.

Compiling s_finite.c without redirecting __finitef fails due:
In file included from 
../sysdeps/powerpc/powerpc64/fpu/multiarch/s_finite.c:22:0:
../include/math.h:15:18: error: ‘__finitef’ undeclared here (not in a 
function)
  hidden_proto (__finitef)


In include/math.h:
3: #include <math/math.h>
15: hidden_proto (__finitef)

In math/math.h:
76: #define __MATHDECL_1(type, function,suffix, args) \
   extern type __MATH_PRECNAME(function,suffix) args __THROW
100: # define __MATH_PRECNAME(name,r) name##f##r
/* Include the file of declarations again, this time using `float'
    instead of `double' and appending f to each function name.  */
104: # include <bits/mathcalls.h>

In math/bits/mathcalls.h:
195: __MATHDECL_1 (int,__finite,, (_Mdouble_ __value)) __attribute__ 
((__const__));

Here is the declaration of "__finitef". Due to the redirection of 
__finite to __redirect___finite we get the declaration of 
__redirect___finitef instead of __finitef and thus __finitef is not 
declared as recognized by gcc and we have to redirect 
__finitef/__finitel, too.
The same applies to s_isnan.c and s_isinf.c.


Bye
Stefan
Florian Weimer Aug. 3, 2016, 11:33 a.m. UTC | #3
On 08/02/2016 04:07 PM, Stefan Liebler wrote:
> Okay. Then I can add an extra configure check to test the gcc attribute
> ifunc support. If there is no support, a fallback ifunc-macro which uses
> the old behaviour could be used. Then it won't break the build but the
> debuginfo is not correct, too. Perhaps this fallback can be removed in
> future. Do you know if gcc in Ubuntu 16.04 has ifunc support for ppc64le?

I would prefer if we could bump the minimum GCC and binutils version 
instead.

(I assume IFUNC support is not an optional feature in either tool which 
can be disabled at build time.)

Thanks,
Florian
Joseph Myers Aug. 3, 2016, 3:49 p.m. UTC | #4
On Wed, 3 Aug 2016, Florian Weimer wrote:

> On 08/02/2016 04:07 PM, Stefan Liebler wrote:
> > Okay. Then I can add an extra configure check to test the gcc attribute
> > ifunc support. If there is no support, a fallback ifunc-macro which uses
> > the old behaviour could be used. Then it won't break the build but the
> > debuginfo is not correct, too. Perhaps this fallback can be removed in
> > future. Do you know if gcc in Ubuntu 16.04 has ifunc support for ppc64le?
> 
> I would prefer if we could bump the minimum GCC and binutils version instead.

Is GCC 4.8 recent enough?  (We required 4.7 for glibc 2.23, so moving to a 
requirement of 4.8 for glibc 2.25 would be reasonable on the basis of 
time-based updates to version requirements.  Binutils 2.24 would be 
required on the same basis and is already required for x86_64.)
Stefan Liebler Aug. 5, 2016, 6:46 a.m. UTC | #5
On 08/03/2016 05:49 PM, Joseph Myers wrote:
> On Wed, 3 Aug 2016, Florian Weimer wrote:
>
>> On 08/02/2016 04:07 PM, Stefan Liebler wrote:
>>> Okay. Then I can add an extra configure check to test the gcc attribute
>>> ifunc support. If there is no support, a fallback ifunc-macro which uses
>>> the old behaviour could be used. Then it won't break the build but the
>>> debuginfo is not correct, too. Perhaps this fallback can be removed in
>>> future. Do you know if gcc in Ubuntu 16.04 has ifunc support for ppc64le?
>>
>> I would prefer if we could bump the minimum GCC and binutils version instead.
>
> Is GCC 4.8 recent enough?  (We required 4.7 for glibc 2.23, so moving to a
> requirement of 4.8 for glibc 2.25 would be reasonable on the basis of
> time-based updates to version requirements.  Binutils 2.24 would be
> required on the same basis and is already required for x86_64.)
>
Requiring a specific gcc / binutils version does not work. E.g. on s390x 
a gcc 4.7.4 has attribute ifunc support.
According to <gcc-src>/gcc/configure.ac there is an option 
--enable-gnu-indirect-function. If it is not specified it defaults to 
default_gnu_indirect_function variable. This is set to yes in 
<gcc-src>/gcc/config.gcc for intel / s390. Otherwise it is no.

According to the fedora / CentOS gcc.spec file ifunc is also enabled on 
e.g. power:
%ifarch %{ix86} x86_64 ppc ppc64 ppc64le ppc64p7 s390 s390x %{arm} aarch64
%global attr_ifunc 1
%else
%global attr_ifunc 0
%endif

%if 0%{?fedora} >= 21 || 0%{?rhel} >= 7
%if %{attr_ifunc}
    --enable-gnu-indirect-function \
%endif
%endif

I don't know how other distros handle this ifunc feature.

There is already a configure-check for binutils support which sets 
HAVE_IFUNC and the libc_ifunc-macro is only used if HAVE_IFUNC is set.

As already proposed I add a configure check to test gcc if attribute 
ifunc is supported and use it in libc_ifunc macro if available. As 
fallback, the old behaviour is used.

See my latest patch update.

Bye
Stefan
Andreas Schwab Aug. 5, 2016, 8:31 a.m. UTC | #6
On Fr, Aug 05 2016, Stefan Liebler <stli@linux.vnet.ibm.com> wrote:

> Requiring a specific gcc / binutils version does not work. E.g. on s390x a
> gcc 4.7.4 has attribute ifunc support.
> According to <gcc-src>/gcc/configure.ac there is an option
> --enable-gnu-indirect-function. If it is not specified it defaults to
> default_gnu_indirect_function variable. This is set to yes in
> <gcc-src>/gcc/config.gcc for intel / s390. Otherwise it is no.

That should probably be updated, then.

Andreas.
Florian Weimer Aug. 5, 2016, 8:34 a.m. UTC | #7
On 08/05/2016 10:31 AM, Andreas Schwab wrote:
> On Fr, Aug 05 2016, Stefan Liebler <stli@linux.vnet.ibm.com> wrote:
>
>> Requiring a specific gcc / binutils version does not work. E.g. on s390x a
>> gcc 4.7.4 has attribute ifunc support.
>> According to <gcc-src>/gcc/configure.ac there is an option
>> --enable-gnu-indirect-function. If it is not specified it defaults to
>> default_gnu_indirect_function variable. This is set to yes in
>> <gcc-src>/gcc/config.gcc for intel / s390. Otherwise it is no.
>
> That should probably be updated, then.

I agree.  Can we require that GCC is configured with 
--enable-gnu-indirect-function for future glibc releases, please?

Thanks,
Florian
Paul E. Murphy Aug. 5, 2016, 3:11 p.m. UTC | #8
On 08/05/2016 03:34 AM, Florian Weimer wrote:
> On 08/05/2016 10:31 AM, Andreas Schwab wrote:
>> On Fr, Aug 05 2016, Stefan Liebler <stli@linux.vnet.ibm.com> wrote:
>>
>>> Requiring a specific gcc / binutils version does not work. E.g. on s390x a
>>> gcc 4.7.4 has attribute ifunc support.
>>> According to <gcc-src>/gcc/configure.ac there is an option
>>> --enable-gnu-indirect-function. If it is not specified it defaults to
>>> default_gnu_indirect_function variable. This is set to yes in
>>> <gcc-src>/gcc/config.gcc for intel / s390. Otherwise it is no.
>>
>> That should probably be updated, then.
> 
> I agree.  Can we require that GCC is configured with --enable-gnu-indirect-function for future glibc releases, please?
> 
> Thanks,
> Florian
> 

Predicated on the desire to enable multiarch support.  Otherwise,
I agree.


Stefan, would you mind splitting out the configury changes into a
separate patch to enforce this stricter toolchain requirement when
testing for multiarch support?

Likewise, I would prefer disabling by default, and throwing
an error at configure time if --enable-multi-arch is requested
on such a toolchain.  Then, libc-symbols.h would not need to
maintain an old version of those macros which require less
rigid symbol mucking.
Stefan Liebler Aug. 8, 2016, 2:46 p.m. UTC | #9
On 08/05/2016 05:11 PM, Paul E. Murphy wrote:
>
>
> On 08/05/2016 03:34 AM, Florian Weimer wrote:
>> On 08/05/2016 10:31 AM, Andreas Schwab wrote:
>>> On Fr, Aug 05 2016, Stefan Liebler <stli@linux.vnet.ibm.com> wrote:
>>>
>>>> Requiring a specific gcc / binutils version does not work. E.g. on s390x a
>>>> gcc 4.7.4 has attribute ifunc support.
>>>> According to <gcc-src>/gcc/configure.ac there is an option
>>>> --enable-gnu-indirect-function. If it is not specified it defaults to
>>>> default_gnu_indirect_function variable. This is set to yes in
>>>> <gcc-src>/gcc/config.gcc for intel / s390. Otherwise it is no.
>>>
>>> That should probably be updated, then.
>>
>> I agree.  Can we require that GCC is configured with --enable-gnu-indirect-function for future glibc releases, please?
>>
>> Thanks,
>> Florian
>>
>
> Predicated on the desire to enable multiarch support.  Otherwise,
> I agree.
>
>
> Stefan, would you mind splitting out the configury changes into a
> separate patch to enforce this stricter toolchain requirement when
> testing for multiarch support?
>
> Likewise, I would prefer disabling by default, and throwing
> an error at configure time if --enable-multi-arch is requested
> on such a toolchain.  Then, libc-symbols.h would not need to
> maintain an old version of those macros which require less
> rigid symbol mucking.
>
Okay. I've added an extra patch for the configure check
and posted the whole series again. See follow-up thread:

"[PATCH v2 1/9] Add configure check to test if gcc supports attribute 
ifunc."
https://www.sourceware.org/ml/libc-alpha/2016-08/msg00258.html
diff mbox

Patch

From 4d0b5a32e673549d1870edb2036f01398e950287 Mon Sep 17 00:00:00 2001
From: Stefan Liebler <stli@linux.vnet.ibm.com>
Date: Fri, 29 Jul 2016 16:38:57 +0200
Subject: [PATCH 1/8] Use gcc attribute ifunc in libc_ifunc macro instead of
 inline assembly due to false debuginfo.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The current s390 ifunc resolver for vector optimized functions and the common
libc_ifunc macro in include/libc-symbols.h uses something like that:
extern void *__resolve___strlen(unsigned long int dl_hwcap) asm (strlen);
asm (".type strlen, %gnu_indirect_function");

This leads to false debug information:
objdump --dwarf=info libc.so:
...
<1><1e6424>: Abbrev Number: 43 (DW_TAG_subprogram)
    <1e6425>   DW_AT_external    : 1
    <1e6425>   DW_AT_name        : (indirect string, offset: 0x1146e): __resolve___strlen
    <1e6429>   DW_AT_decl_file   : 1
    <1e642a>   DW_AT_decl_line   : 23
    <1e642b>   DW_AT_linkage_name: (indirect string, offset: 0x1147a): strlen
    <1e642f>   DW_AT_prototyped  : 1
    <1e642f>   DW_AT_type        : <0x1e4ccd>
    <1e6433>   DW_AT_low_pc      : 0x998e0
    <1e643b>   DW_AT_high_pc     : 0x16
    <1e6443>   DW_AT_frame_base  : 1 byte block: 9c     (DW_OP_call_frame_cfa)
    <1e6445>   DW_AT_GNU_all_call_sites: 1
    <1e6445>   DW_AT_sibling     : <0x1e6459>
 <2><1e6449>: Abbrev Number: 44 (DW_TAG_formal_parameter)
    <1e644a>   DW_AT_name        : (indirect string, offset: 0x1845): dl_hwcap
    <1e644e>   DW_AT_decl_file   : 1
    <1e644f>   DW_AT_decl_line   : 23
    <1e6450>   DW_AT_type        : <0x1e4c8d>
    <1e6454>   DW_AT_location    : 0x122115 (location list)
...

The debuginfo for the ifunc-resolver function contains the DW_AT_linkage_name
field, which names the real function name "strlen". If you perform an inferior
function call to strlen in lldb, then it fails due to something like that:
"error: no matching function for call to 'strlen'
candidate function not viable: no known conversion from 'const char [6]'
to 'unsigned long' for 1st argument"

The unsigned long is the dl_hwcap argument of the resolver function.
The strlen function itself has no debufinfo.

The s390 ifunc resolver for memset & co uses something like that:
asm (".globl FUNC"
     ".type FUNC, @gnu_indirect_function"
     ".set FUNC, __resolve_FUNC");

This way the debuginfo for the ifunc-resolver function does not conain the
DW_AT_linkage_name field and the real function has no debuginfo, too.

Using this strategy for the vector optimized functions leads to some troubles
for functions like strnlen. Here we have __strnlen and a weak alias strnlen.
The __strnlen function is the ifunc function, which is realized with the asm-
statement above. The weak_alias-macro can't be used here due to undefined symbol:
gcc ../sysdeps/s390/multiarch/strnlen.c -c ...
In file included from <command-line>:0:0:
../sysdeps/s390/multiarch/strnlen.c:28:24: error: ‘strnlen’ aliased to undefined symbol ‘__strnlen’
 weak_alias (__strnlen, strnlen)
                        ^
./../include/libc-symbols.h:111:26: note: in definition of macro ‘_weak_alias’
   extern __typeof (name) aliasname __attribute__ ((weak, alias (#name)));
                          ^
../sysdeps/s390/multiarch/strnlen.c:28:1: note: in expansion of macro ‘weak_alias’
 weak_alias (__strnlen, strnlen)
 ^
make[2]: *** [build/string/strnlen.o] Error 1

As the __strnlen function is defined with asm-statements the function name
__strnlen isn't known by gcc. But the weak alias can also be done with an
asm statement to resolve this issue:
__asm__ (".weak  strnlen\n\t"
         ".set   strnlen,__strnlen\n");

In order to use the weak_alias macro, gcc needs to know the ifunc function. The
minimum gcc to build glibc is currently 4.7, which supports attribute((ifunc)).
See https://gcc.gnu.org/onlinedocs/gcc-4.7.0/gcc/Function-Attributes.html.
Usage is something like that:
__typeof (FUNC) FUNC __attribute__ ((ifunc ("__resolve_FUNC")));

Then gcc produces the same .globl, .type, .set assembler instructions like above.
And the debuginfo does not contain the DW_AT_linkage_name field and there is no
debuginfo for the real function, too.

But in order to get it work, there is also some extra work to do.
Currently, the glibc internal symbol on s390x e.g. __GI___strnlen is not the
ifunc symbol, but the fallback __strnlen_c symbol. Thus I have to omit the
libc_hidden_def macro in strnlen.c (here is the ifunc function __strnlen)
because it is already handled in strnlen-c.c (here is __strnlen_c).

Due to libc_hidden_proto (__strnlen) in string.h, compiling fails:
gcc ../sysdeps/s390/multiarch/strnlen.c -c ...
In file included from <command-line>:0:0:
../sysdeps/s390/multiarch/strnlen.c:53:24: error: ‘strnlen’ aliased to undefined symbol ‘__strnlen’
 weak_alias (__strnlen, strnlen)
                        ^
./../include/libc-symbols.h:111:26: note: in definition of macro ‘_weak_alias’
   extern __typeof (name) aliasname __attribute__ ((weak, alias (#name)));
                          ^
../sysdeps/s390/multiarch/strnlen.c:53:1: note: in expansion of macro ‘weak_alias’
 weak_alias (__strnlen, strnlen)
 ^
make[2]: *** [build/string/strnlen.os] Error 1

I have to redirect the prototypes for __strnlen in string.h and create a copy
of the prototype for using as ifunc function:
extern __typeof (__redirect___strnlen) __libc___strnlen;
__typeof (__libc___strnlen) __libc___strnlen __attribute__ ((ifunc ("__resolve_strnlen")));
strong_alias (__libc___strnlen, __strnlen)
weak_alias (__libc___strnlen, strnlen)

This way there is no trouble with the internal __GI_* symbols.
Glibc builds fine with this construct and the debuginfo is "correct".
For functions without a __GI_* symbol like memccpy or if the __GI_* symbol
targets to the ifunc symbol, this redirection is not needed.

This patch adjusts the common libc_ifunc and libm_ifunc macro to use gcc
attribute ifunc. Due to this change, the macro users where the __GI_* symbol
does not target the ifunc symbol have to be prepared with the redirection
construct.

This patch also prepares the libc_ifunc macro to be useable in s390-ifunc-macro.
The s390 ifunc-resolver-functions do have an hwcaps parameter and not all
resolvers need the same initialization code. The next patch in this series
changes the s390 ifunc macros to use this common one.

Tested the whole patchset by building glibc and running the testsuite on s390,
intel, power for 32/64bit. The __GI_* symbols targets the same functions as
before.

Okay to commit?

Bye
Stefan

ChangeLog:

	* include/libc-symbols.h (__ifunc): New macro uses gcc attribute ifunc.
	(libc_ifunc, libm_ifunc): Use __ifunc as base macro.
	(libc_ifunc_redirected, libm_ifunc_init): New define.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_finite.c:
	Redirect ifunced function in header for using as type for ifunc function.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_finitef.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isinf.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isinff.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isnan.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isnanf.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcmp.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcpy.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/mempcpy.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memset.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/rawmemchr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strchr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strlen.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strncmp.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strnlen.c: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_finite.c: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_finitef.c: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_isinf.c: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_isinff.c: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_isnan.c: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_isnanf.cLikewise.
	* sysdeps/powerpc/powerpc64/multiarch/memcmp.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/mempcpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/rawmemchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/stpcpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/stpncpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcat.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcmp.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncmp.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strnlen.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strrchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strstr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/wcschr.c: Likewise.
---
 include/libc-symbols.h                             | 33 ++++++++++++----------
 .../powerpc32/power4/fpu/multiarch/s_finite.c      | 16 +++++++----
 .../powerpc32/power4/fpu/multiarch/s_finitef.c     | 10 ++++---
 .../powerpc32/power4/fpu/multiarch/s_isinf.c       | 16 +++++++----
 .../powerpc32/power4/fpu/multiarch/s_isinff.c      | 10 ++++---
 .../powerpc32/power4/fpu/multiarch/s_isnan.c       | 24 ++++++++++------
 .../powerpc32/power4/fpu/multiarch/s_isnanf.c      |  1 +
 .../powerpc/powerpc32/power4/multiarch/memcmp.c    | 10 ++++---
 .../powerpc/powerpc32/power4/multiarch/memcpy.c    | 23 ++++++++-------
 .../powerpc/powerpc32/power4/multiarch/memmove.c   | 10 ++++---
 .../powerpc/powerpc32/power4/multiarch/mempcpy.c   | 15 ++++++----
 .../powerpc/powerpc32/power4/multiarch/memset.c    | 14 +++++----
 .../powerpc/powerpc32/power4/multiarch/rawmemchr.c | 11 ++++----
 .../powerpc/powerpc32/power4/multiarch/strchr.c    | 12 +++++---
 .../powerpc/powerpc32/power4/multiarch/strlen.c    | 10 ++++---
 .../powerpc/powerpc32/power4/multiarch/strncmp.c   | 12 +++++---
 .../powerpc/powerpc32/power4/multiarch/strnlen.c   | 13 +++++----
 sysdeps/powerpc/powerpc64/fpu/multiarch/s_finite.c | 20 ++++++++-----
 .../powerpc/powerpc64/fpu/multiarch/s_finitef.c    | 14 +++++----
 sysdeps/powerpc/powerpc64/fpu/multiarch/s_isinf.c  | 20 ++++++++-----
 sysdeps/powerpc/powerpc64/fpu/multiarch/s_isinff.c | 14 +++++----
 sysdeps/powerpc/powerpc64/fpu/multiarch/s_isnan.c  | 32 ++++++++++++---------
 sysdeps/powerpc/powerpc64/fpu/multiarch/s_isnanf.c |  1 +
 sysdeps/powerpc/powerpc64/multiarch/memcmp.c       | 14 +++++----
 sysdeps/powerpc/powerpc64/multiarch/mempcpy.c      | 15 ++++++----
 sysdeps/powerpc/powerpc64/multiarch/rawmemchr.c    | 10 ++++---
 sysdeps/powerpc/powerpc64/multiarch/stpcpy.c       |  1 +
 sysdeps/powerpc/powerpc64/multiarch/stpncpy.c      | 17 ++++++-----
 sysdeps/powerpc/powerpc64/multiarch/strcat.c       | 14 +++++----
 sysdeps/powerpc/powerpc64/multiarch/strchr.c       | 12 +++++---
 sysdeps/powerpc/powerpc64/multiarch/strcmp.c       | 16 +++++++----
 sysdeps/powerpc/powerpc64/multiarch/strcpy.c       | 14 +++++----
 sysdeps/powerpc/powerpc64/multiarch/strncmp.c      | 20 +++++++------
 sysdeps/powerpc/powerpc64/multiarch/strncpy.c      | 16 +++++++----
 sysdeps/powerpc/powerpc64/multiarch/strnlen.c      | 14 +++++----
 sysdeps/powerpc/powerpc64/multiarch/strrchr.c      | 10 ++++---
 sysdeps/powerpc/powerpc64/multiarch/strstr.c       | 10 ++++---
 sysdeps/powerpc/powerpc64/multiarch/wcschr.c       | 17 ++++++-----
 38 files changed, 330 insertions(+), 211 deletions(-)

diff --git a/include/libc-symbols.h b/include/libc-symbols.h
index 4548e09..b95a0f9 100644
--- a/include/libc-symbols.h
+++ b/include/libc-symbols.h
@@ -714,26 +714,29 @@  for linking")
 #endif
 
 /* Marker used for indirection function symbols.  */
-#define libc_ifunc(name, expr)						\
-  extern void *name##_ifunc (void) __asm__ (#name);			\
-  void *name##_ifunc (void)						\
+#define __ifunc(type_name, name, expr, arg, init)			\
+  extern __typeof (type_name) name __attribute__			\
+			      ((ifunc (#name "_ifunc")));		\
+  static void *name##_ifunc (arg)					\
   {									\
-    INIT_ARCH ();							\
-    __typeof (name) *res = expr;					\
+    init ();								\
+    __typeof (type_name) *res = expr;					\
     return res;								\
-  }									\
-  __asm__ (".type " #name ", %gnu_indirect_function");
+  }
+
+#define libc_ifunc(name, expr) __ifunc (name, name, expr, void, INIT_ARCH)
+/* Use libc_ifunc_redirected if your ifunc'ed function has an internal symbol
+   which should be a dedicated fallback function instead of ifunc'ed.
+   You have to redirect the function in the header file and use it as
+   redirected_name.  */
+#define libc_ifunc_redirected(redirected_name, name, expr)	\
+  __ifunc (redirected_name, name, expr, void, INIT_ARCH)
+
 
 /* The body of the function is supposed to use __get_cpu_features
    which will, if necessary, initialize the data first.  */
-#define libm_ifunc(name, expr)						\
-  extern void *name##_ifunc (void) __asm__ (#name);			\
-  void *name##_ifunc (void)						\
-  {									\
-    __typeof (name) *res = expr;					\
-    return res;								\
-  }									\
-  __asm__ (".type " #name ", %gnu_indirect_function");
+#define libm_ifunc_init()
+#define libm_ifunc(name, expr) __ifunc (name, name, expr, void, libm_ifunc_init)
 
 #ifdef HAVE_ASM_SET_DIRECTIVE
 # define libc_ifunc_hidden_def1(local, name)				\
diff --git a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_finite.c b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_finite.c
index c860a1b..0c0d128 100644
--- a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_finite.c
+++ b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_finite.c
@@ -16,6 +16,9 @@ 
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#define __finite __redirect___finite
+#define __finitef __redirect___finitef
+#define __finitel __redirect___finitel
 #include <math.h>
 #include <math_ldbl_opt.h>
 #include <shlib-compat.h>
@@ -23,11 +26,14 @@ 
 
 extern __typeof (__finite) __finite_ppc32 attribute_hidden;
 extern __typeof (__finite) __finite_power7 attribute_hidden;
-
-libc_ifunc (__finite,
-	    (hwcap & PPC_FEATURE_ARCH_2_06)
-	    ? __finite_power7
-            : __finite_ppc32);
+#undef __finite
+#undef __finitef
+#undef __finitel
+
+libc_ifunc_redirected (__redirect___finite,  __finite,
+		       (hwcap & PPC_FEATURE_ARCH_2_06)
+		       ? __finite_power7
+		       : __finite_ppc32);
 
 weak_alias (__finite, finite)
 
diff --git a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_finitef.c b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_finitef.c
index 831c94f..683477a 100644
--- a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_finitef.c
+++ b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_finitef.c
@@ -16,6 +16,7 @@ 
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#define __finitef __redirect___finitef
 #include <math.h>
 #include <shlib-compat.h>
 #include "init-arch.h"
@@ -23,10 +24,11 @@ 
 extern __typeof (__finitef) __finitef_ppc32 attribute_hidden;
 /* The power7 finite(double) works for float.  */
 extern __typeof (__finitef) __finite_power7 attribute_hidden;
+#undef __finitef
 
-libc_ifunc (__finitef,
-	    (hwcap & PPC_FEATURE_ARCH_2_06)
-	    ? __finite_power7
-            : __finitef_ppc32);
+libc_ifunc_redirected  (__redirect___finitef, __finitef,
+			(hwcap & PPC_FEATURE_ARCH_2_06)
+			? __finite_power7
+			: __finitef_ppc32);
 
 weak_alias (__finitef, finitef)
diff --git a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isinf.c b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isinf.c
index 506c111..fe6c912 100644
--- a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isinf.c
+++ b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isinf.c
@@ -16,6 +16,9 @@ 
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#define __isinf __redirect___isinf
+#define __isinff __redirect___isinff
+#define __isinfl __redirect___isinfl
 #include <math.h>
 #include <math_ldbl_opt.h>
 #include <shlib-compat.h>
@@ -23,11 +26,14 @@ 
 
 extern __typeof (__isinf) __isinf_ppc32 attribute_hidden;
 extern __typeof (__isinf) __isinf_power7 attribute_hidden;
-
-libc_ifunc (__isinf,
-	    (hwcap & PPC_FEATURE_ARCH_2_06)
-	    ? __isinf_power7
-            : __isinf_ppc32);
+#undef __isinf
+#undef __isinff
+#undef __isinfl
+
+libc_ifunc_redirected (__redirect___isinf,  __isinf,
+		       (hwcap & PPC_FEATURE_ARCH_2_06)
+		       ? __isinf_power7
+		       : __isinf_ppc32);
 
 weak_alias (__isinf, isinf)
 
diff --git a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isinff.c b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isinff.c
index 2ab83ee..1706092 100644
--- a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isinff.c
+++ b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isinff.c
@@ -16,6 +16,7 @@ 
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#define __isinff __redirect___isinff
 #include <math.h>
 #include <math_ldbl_opt.h>
 #include <shlib-compat.h>
@@ -24,10 +25,11 @@ 
 extern __typeof (__isinff) __isinff_ppc32 attribute_hidden;
 /* The power7 isinf(double) works for float.  */
 extern __typeof (__isinff) __isinf_power7 attribute_hidden;
+#undef __isinff
 
-libc_ifunc (__isinff,
-	    (hwcap & PPC_FEATURE_ARCH_2_06)
-	    ? __isinf_power7
-            : __isinff_ppc32);
+libc_ifunc_redirected (__redirect___isinff,  __isinff,
+		       (hwcap & PPC_FEATURE_ARCH_2_06)
+		       ? __isinf_power7
+		       : __isinff_ppc32);
 
 weak_alias (__isinff, isinff)
diff --git a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isnan.c b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isnan.c
index 8f848d7..3655b81 100644
--- a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isnan.c
+++ b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isnan.c
@@ -16,6 +16,9 @@ 
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#define __isnan __redirect___isnan
+#define __isnanf __redirect___isnanf
+#define __isnanl __redirect___isnanl
 #include <math.h>
 #include <math_ldbl_opt.h>
 #include <shlib-compat.h>
@@ -25,15 +28,18 @@  extern __typeof (__isnan) __isnan_ppc32 attribute_hidden;
 extern __typeof (__isnan) __isnan_power5 attribute_hidden;
 extern __typeof (__isnan) __isnan_power6 attribute_hidden;
 extern __typeof (__isnan) __isnan_power7 attribute_hidden;
-
-libc_ifunc (__isnan,
-	    (hwcap & PPC_FEATURE_ARCH_2_06)
-	    ? __isnan_power7 :
-	      (hwcap & PPC_FEATURE_ARCH_2_05)
-	      ? __isnan_power6 :
-		(hwcap & PPC_FEATURE_POWER5)
-		? __isnan_power5
-            : __isnan_ppc32);
+#undef __isnan
+#undef __isnanf
+#undef __isnanl
+
+libc_ifunc_redirected (__redirect___isnan, __isnan,
+		       (hwcap & PPC_FEATURE_ARCH_2_06)
+		       ? __isnan_power7
+		       : (hwcap & PPC_FEATURE_ARCH_2_05)
+			 ? __isnan_power6
+			 : (hwcap & PPC_FEATURE_POWER5)
+			   ? __isnan_power5
+			   : __isnan_ppc32);
 
 weak_alias (__isnan, isnan)
 
diff --git a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isnanf.c b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isnanf.c
index c43c0f3..304b2a7 100644
--- a/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isnanf.c
+++ b/sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_isnanf.c
@@ -35,4 +35,5 @@  libc_ifunc (__isnanf,
 		? __isnanf_power5
             : __isnan_ppc32);
 
+hidden_def (__isnanf)
 weak_alias (__isnanf, isnanf)
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memcmp.c b/sysdeps/powerpc/powerpc32/power4/multiarch/memcmp.c
index c08519c..49d424f 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/memcmp.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memcmp.c
@@ -18,17 +18,19 @@ 
 
 /* Define multiple versions only for definition in libc.  */
 #if IS_IN (libc)
+# define memcmp __redirect_memcmp
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
 
 extern __typeof (memcmp) __memcmp_ppc attribute_hidden;
 extern __typeof (memcmp) __memcmp_power7 attribute_hidden;
+# undef memcmp
 
 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
    ifunc symbol properly.  */
-libc_ifunc (memcmp,
-            (hwcap & PPC_FEATURE_HAS_VSX)
-            ? __memcmp_power7
-            : __memcmp_ppc);
+libc_ifunc_redirected (__redirect_memcmp, memcmp,
+		       (hwcap & PPC_FEATURE_HAS_VSX)
+		       ? __memcmp_power7
+		       : __memcmp_ppc);
 #endif
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy.c b/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy.c
index f379e47..1a5da21 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy.c
@@ -20,6 +20,8 @@ 
    DSO.  In static binaries we need memcpy before the initialization
    happened.  */
 #if defined SHARED && IS_IN (libc)
+# undef memcpy
+# define memcpy __redirect_memcpy
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
@@ -29,17 +31,18 @@  extern __typeof (memcpy) __memcpy_cell attribute_hidden;
 extern __typeof (memcpy) __memcpy_power6 attribute_hidden;
 extern __typeof (memcpy) __memcpy_a2 attribute_hidden;
 extern __typeof (memcpy) __memcpy_power7 attribute_hidden;
+# undef memcpy
 
 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
    ifunc symbol properly.  */
-libc_ifunc (memcpy,
-            (hwcap & PPC_FEATURE_HAS_VSX)
-            ? __memcpy_power7 :
-	      (hwcap & PPC_FEATURE_ARCH_2_06)
-	      ? __memcpy_a2 :
-		(hwcap & PPC_FEATURE_ARCH_2_05)
-		? __memcpy_power6 :
-		  (hwcap & PPC_FEATURE_CELL_BE)
-		  ? __memcpy_cell
-            : __memcpy_ppc);
+libc_ifunc_redirected (__redirect_memcpy, memcpy,
+		       (hwcap & PPC_FEATURE_HAS_VSX)
+		       ? __memcpy_power7
+		       : (hwcap & PPC_FEATURE_ARCH_2_06)
+			 ? __memcpy_a2
+			 : (hwcap & PPC_FEATURE_ARCH_2_05)
+			   ? __memcpy_power6
+			   : (hwcap & PPC_FEATURE_CELL_BE)
+			     ? __memcpy_cell
+			     : __memcpy_ppc);
 #endif
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c b/sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c
index 4173184..1dfb5be 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c
@@ -19,16 +19,18 @@ 
 #if defined SHARED && IS_IN (libc)
 /* Redefine memmove so that the compiler won't complain about the type
    mismatch with the IFUNC selector in strong_alias, below.  */
+# define memmove __redirect_memmove
 # include <string.h>
 # include "init-arch.h"
 
 extern __typeof (memmove) __memmove_ppc attribute_hidden;
 extern __typeof (memmove) __memmove_power7 attribute_hidden;
+# undef memmove
 
-libc_ifunc (memmove,
-            (hwcap & PPC_FEATURE_HAS_VSX)
-            ? __memmove_power7
-            : __memmove_ppc);
+libc_ifunc_redirected (__redirect_memmove, memmove,
+		       (hwcap & PPC_FEATURE_HAS_VSX)
+		       ? __memmove_power7
+		       : __memmove_ppc);
 #else
 # include <string/memmove.c>
 #endif
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/mempcpy.c b/sysdeps/powerpc/powerpc32/power4/multiarch/mempcpy.c
index 3c77b5f..3c7c644 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/mempcpy.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/mempcpy.c
@@ -17,23 +17,28 @@ 
    <http://www.gnu.org/licenses/>.  */
 
 #if IS_IN (libc)
+# define mempcpy __redirect_mempcpy
+# define __mempcpy __redirect___mempcpy
 # define NO_MEMPCPY_STPCPY_REDIRECT
+/* Omit the mempcpy inline definitions because it would redefine mempcpy.  */
+# define _HAVE_STRING_ARCH_mempcpy 1
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
 
 extern __typeof (__mempcpy) __mempcpy_ppc attribute_hidden;
 extern __typeof (__mempcpy) __mempcpy_power7 attribute_hidden;
+# undef mempcpy
+# undef __mempcpy
 
 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
    ifunc symbol properly.  */
-libc_ifunc (__mempcpy,
-	    (hwcap & PPC_FEATURE_HAS_VSX)
-            ? __mempcpy_power7
-            : __mempcpy_ppc);
+libc_ifunc_redirected (__redirect___mempcpy,  __mempcpy,
+		       (hwcap & PPC_FEATURE_HAS_VSX)
+		       ? __mempcpy_power7
+		       : __mempcpy_ppc);
 
 weak_alias (__mempcpy, mempcpy)
-libc_hidden_def (mempcpy)
 #else
 # include <string/mempcpy.c>
 #endif
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memset.c b/sysdeps/powerpc/powerpc32/power4/multiarch/memset.c
index 1d7fc7f..a5c0142 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/memset.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memset.c
@@ -18,6 +18,7 @@ 
 
 /* Define multiple versions only for definition in libc.  */
 #if defined SHARED && IS_IN (libc)
+# define memset __redirect_memset
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
@@ -25,13 +26,14 @@ 
 extern __typeof (memset) __memset_ppc attribute_hidden;
 extern __typeof (memset) __memset_power6 attribute_hidden;
 extern __typeof (memset) __memset_power7 attribute_hidden;
+# undef memset
 
 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
    ifunc symbol properly.  */
-libc_ifunc (memset,
-            (hwcap & PPC_FEATURE_HAS_VSX)
-            ? __memset_power7 :
-	      (hwcap & PPC_FEATURE_ARCH_2_05)
-		? __memset_power6
-            : __memset_ppc);
+libc_ifunc_redirected (__redirect_memset, memset,
+		       (hwcap & PPC_FEATURE_HAS_VSX)
+		       ? __memset_power7
+		       : (hwcap & PPC_FEATURE_ARCH_2_05)
+			 ? __memset_power6
+			 : __memset_ppc);
 #endif
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/rawmemchr.c b/sysdeps/powerpc/powerpc32/power4/multiarch/rawmemchr.c
index f06030e..d72b5df 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/rawmemchr.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/rawmemchr.c
@@ -17,20 +17,21 @@ 
    <http://www.gnu.org/licenses/>.  */
 
 #if IS_IN (libc)
+# define __rawmemchr __redirect___rawmemchr
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
 
 extern __typeof (__rawmemchr) __rawmemchr_ppc attribute_hidden;
 extern __typeof (__rawmemchr) __rawmemchr_power7 attribute_hidden;
+# undef __rawmemchr
 
 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
    ifunc symbol properly.  */
-libc_ifunc (__rawmemchr,
-	    (hwcap & PPC_FEATURE_HAS_VSX)
-            ? __rawmemchr_power7
-            : __rawmemchr_ppc);
-
+libc_ifunc_redirected (__redirect___rawmemchr, __rawmemchr,
+		       (hwcap & PPC_FEATURE_HAS_VSX)
+		       ? __rawmemchr_power7
+		       : __rawmemchr_ppc);
 weak_alias (__rawmemchr, rawmemchr)
 #else
 #include <string/rawmemchr.c>
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/strchr.c b/sysdeps/powerpc/powerpc32/power4/multiarch/strchr.c
index 2cfde63..c23384f 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/strchr.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/strchr.c
@@ -18,18 +18,22 @@ 
 
 /* Define multiple versions only for definition in libc.  */
 #if defined SHARED && IS_IN (libc)
+# define strchr __redirect_strchr
+/* Omit the strchr inline definitions because it would redefine strchr.  */
+# define __NO_STRING_INLINES
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
 
 extern __typeof (strchr) __strchr_ppc attribute_hidden;
 extern __typeof (strchr) __strchr_power7 attribute_hidden;
+# undef strchr
 
 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
    ifunc symbol properly.  */
-libc_ifunc (strchr,
-	    (hwcap & PPC_FEATURE_HAS_VSX)
-            ? __strchr_power7
-            : __strchr_ppc);
+libc_ifunc_redirected (__redirect_strchr,  strchr,
+		       (hwcap & PPC_FEATURE_HAS_VSX)
+		       ? __strchr_power7
+		       : __strchr_ppc);
 weak_alias (strchr, index)
 #endif
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/strlen.c b/sysdeps/powerpc/powerpc32/power4/multiarch/strlen.c
index af5921a..b676b26 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/strlen.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/strlen.c
@@ -17,15 +17,17 @@ 
    <http://www.gnu.org/licenses/>.  */
 
 #if defined SHARED && IS_IN (libc)
+# define strlen __redirect_strlen
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
 
 extern __typeof (strlen) __strlen_ppc attribute_hidden;
 extern __typeof (strlen) __strlen_power7 attribute_hidden;
+# undef strlen
 
-libc_ifunc (strlen,
-            (hwcap & PPC_FEATURE_HAS_VSX)
-            ? __strlen_power7
-            : __strlen_ppc);
+libc_ifunc_redirected (__redirect_strlen, strlen,
+		       (hwcap & PPC_FEATURE_HAS_VSX)
+		       ? __strlen_power7
+		       : __strlen_ppc);
 #endif
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/strncmp.c b/sysdeps/powerpc/powerpc32/power4/multiarch/strncmp.c
index 7cc7628..c384b4c 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/strncmp.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/strncmp.c
@@ -18,6 +18,9 @@ 
 
 /* Define multiple versions only for definition in libc.  */
 #if defined SHARED && IS_IN (libc)
+# define strncmp __redirect_strncmp
+/* Omit the strncmp inline definitions because it would redefine strncmp.  */
+# define __NO_STRING_INLINES
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
@@ -25,11 +28,12 @@ 
 extern __typeof (strncmp) __strncmp_ppc attribute_hidden;
 extern __typeof (strncmp) __strncmp_power4 attribute_hidden;
 extern __typeof (strncmp) __strncmp_power7 attribute_hidden;
+# undef strncmp
 
 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
    ifunc symbol properly.  */
-libc_ifunc (strncmp,
-            (hwcap & PPC_FEATURE_HAS_VSX)
-            ? __strncmp_power7
-            : __strncmp_ppc);
+libc_ifunc_redirected (__redirect_strncmp, strncmp,
+		       (hwcap & PPC_FEATURE_HAS_VSX)
+		       ? __strncmp_power7
+		       : __strncmp_ppc);
 #endif
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/strnlen.c b/sysdeps/powerpc/powerpc32/power4/multiarch/strnlen.c
index 8f1e7c9..c3681be 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/strnlen.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/strnlen.c
@@ -17,17 +17,20 @@ 
    <http://www.gnu.org/licenses/>.  */
 
 #if IS_IN (libc)
+# define strnlen __redirect_strnlen
+# define __strnlen __redirect___strnlen
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
 
 extern __typeof (__strnlen) __strnlen_ppc attribute_hidden;
 extern __typeof (__strnlen) __strnlen_power7 attribute_hidden;
+# undef strnlen
+# undef __strnlen
 
-libc_ifunc (__strnlen,
-            (hwcap & PPC_FEATURE_HAS_VSX)
-            ? __strnlen_power7
-            : __strnlen_ppc);
+libc_ifunc_redirected (__redirect___strnlen, __strnlen,
+		       (hwcap & PPC_FEATURE_HAS_VSX)
+		       ? __strnlen_power7
+		       : __strnlen_ppc);
 weak_alias (__strnlen, strnlen)
-libc_hidden_def (strnlen)
 #endif
diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finite.c b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finite.c
index 067edc2..c7d67f1 100644
--- a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finite.c
+++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finite.c
@@ -16,6 +16,9 @@ 
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#define __finite __redirect___finite
+#define __finitef __redirect___finitef
+#define __finitel __redirect___finitel
 #include <math.h>
 #include <math_ldbl_opt.h>
 #include <shlib-compat.h>
@@ -24,13 +27,16 @@ 
 extern __typeof (__finite) __finite_ppc64 attribute_hidden;
 extern __typeof (__finite) __finite_power7 attribute_hidden;
 extern __typeof (__finite) __finite_power8 attribute_hidden;
-
-libc_ifunc (__finite,
-	    (hwcap2 & PPC_FEATURE2_ARCH_2_07)
-	    ? __finite_power8 :
-	      (hwcap & PPC_FEATURE_ARCH_2_06)
-	      ? __finite_power7
-            : __finite_ppc64);
+#undef __finite
+#undef __finitef
+#undef __finitel
+
+libc_ifunc_redirected (__redirect___finite, __finite,
+		       (hwcap2 & PPC_FEATURE2_ARCH_2_07)
+		       ? __finite_power8
+		       : (hwcap & PPC_FEATURE_ARCH_2_06)
+			 ? __finite_power7
+			 : __finite_ppc64);
 
 weak_alias (__finite, finite)
 
diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finitef.c b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finitef.c
index e0b4686..c9ecd0d 100644
--- a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finitef.c
+++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_finitef.c
@@ -16,6 +16,7 @@ 
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#define __finitef __redirect___finitef
 #include <math.h>
 #include <shlib-compat.h>
 #include "init-arch.h"
@@ -24,12 +25,13 @@  extern __typeof (__finitef) __finitef_ppc64 attribute_hidden;
 /* The double-precision version also works for single-precision.  */
 extern __typeof (__finitef) __finite_power7 attribute_hidden;
 extern __typeof (__finitef) __finite_power8 attribute_hidden;
+#undef __finitef
 
-libc_ifunc (__finitef,
-	    (hwcap2 & PPC_FEATURE2_ARCH_2_07)
-	    ? __finite_power8 :
-	      (hwcap & PPC_FEATURE_ARCH_2_06)
-	      ? __finite_power7
-            : __finitef_ppc64);
+libc_ifunc_redirected (__redirect___finitef, __finitef,
+		       (hwcap2 & PPC_FEATURE2_ARCH_2_07)
+		       ? __finite_power8
+		       : (hwcap & PPC_FEATURE_ARCH_2_06)
+			 ? __finite_power7
+			 : __finitef_ppc64);
 
 weak_alias (__finitef, finitef)
diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_isinf.c b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_isinf.c
index 07e159d..a13ec27 100644
--- a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_isinf.c
+++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_isinf.c
@@ -16,6 +16,9 @@ 
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#define __isinf __redirect___isinf
+#define __isinff __redirect___isinff
+#define __isinfl __redirect___isinfl
 #include <math.h>
 #include <math_ldbl_opt.h>
 #include <shlib-compat.h>
@@ -24,13 +27,16 @@ 
 extern __typeof (__isinf) __isinf_ppc64 attribute_hidden;
 extern __typeof (__isinf) __isinf_power7 attribute_hidden;
 extern __typeof (__isinf) __isinf_power8 attribute_hidden;
-
-libc_ifunc (__isinf,
-	    (hwcap2 & PPC_FEATURE2_ARCH_2_07)
-	    ? __isinf_power8 :
-	      (hwcap & PPC_FEATURE_ARCH_2_06)
-	      ? __isinf_power7
-            : __isinf_ppc64);
+#undef __isinf
+#undef __isinff
+#undef __isinfl
+
+libc_ifunc_redirected (__redirect___isinf, __isinf,
+		       (hwcap2 & PPC_FEATURE2_ARCH_2_07)
+		       ? __isinf_power8
+		       : (hwcap & PPC_FEATURE_ARCH_2_06)
+			 ? __isinf_power7
+			 : __isinf_ppc64);
 
 weak_alias (__isinf, isinf)
 
diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_isinff.c b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_isinff.c
index 2cb161b..cafc118 100644
--- a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_isinff.c
+++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_isinff.c
@@ -16,6 +16,7 @@ 
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#define __isinff __redirect___isinff
 #include <math.h>
 #include <math_ldbl_opt.h>
 #include <shlib-compat.h>
@@ -25,12 +26,13 @@  extern __typeof (__isinff) __isinff_ppc64 attribute_hidden;
 /* The double-precision version also works for single-precision.  */
 extern __typeof (__isinff) __isinf_power7 attribute_hidden;
 extern __typeof (__isinff) __isinf_power8 attribute_hidden;
+#undef __isinff
 
-libc_ifunc (__isinff,
-	    (hwcap2 & PPC_FEATURE2_ARCH_2_07)
-	    ? __isinf_power8 :
-	      (hwcap & PPC_FEATURE_ARCH_2_06)
-	      ? __isinf_power7
-            : __isinff_ppc64);
+libc_ifunc_redirected (__redirect___isinff, __isinff,
+		       (hwcap2 & PPC_FEATURE2_ARCH_2_07)
+		       ? __isinf_power8
+		       : (hwcap & PPC_FEATURE_ARCH_2_06)
+			 ? __isinf_power7
+			 : __isinff_ppc64);
 
 weak_alias (__isinff, isinff)
diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_isnan.c b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_isnan.c
index a614f25..fce3c9d 100644
--- a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_isnan.c
+++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_isnan.c
@@ -16,6 +16,9 @@ 
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#define __isnan __redirect___isnan
+#define __isnanf __redirect___isnanf
+#define __isnanl __redirect___isnanl
 #include <math.h>
 #include <math_ldbl_opt.h>
 #include <shlib-compat.h>
@@ -27,19 +30,22 @@  extern __typeof (__isnan) __isnan_power6 attribute_hidden;
 extern __typeof (__isnan) __isnan_power6x attribute_hidden;
 extern __typeof (__isnan) __isnan_power7 attribute_hidden;
 extern __typeof (__isnan) __isnan_power8 attribute_hidden;
-
-libc_ifunc (__isnan,
-	    (hwcap2 & PPC_FEATURE2_ARCH_2_07)
-	    ? __isnan_power8 :
-	      (hwcap & PPC_FEATURE_ARCH_2_06)
-	      ? __isnan_power7 :
-		(hwcap & PPC_FEATURE_POWER6_EXT)
-		? __isnan_power6x :
-		  (hwcap & PPC_FEATURE_ARCH_2_05)
-		    ? __isnan_power6 :
-		    (hwcap & PPC_FEATURE_POWER5)
-		      ? __isnan_power5
-            : __isnan_ppc64);
+#undef __isnan
+#undef __isnanf
+#undef __isnanl
+
+libc_ifunc_redirected (__redirect___isnan, __isnan,
+		       (hwcap2 & PPC_FEATURE2_ARCH_2_07)
+		       ? __isnan_power8
+		       : (hwcap & PPC_FEATURE_ARCH_2_06)
+			 ? __isnan_power7
+			 : (hwcap & PPC_FEATURE_POWER6_EXT)
+			   ? __isnan_power6x
+			   : (hwcap & PPC_FEATURE_ARCH_2_05)
+			     ? __isnan_power6
+			     : (hwcap & PPC_FEATURE_POWER5)
+			       ? __isnan_power5
+			       : __isnan_ppc64);
 
 weak_alias (__isnan, isnan)
 
diff --git a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_isnanf.c b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_isnanf.c
index acbc131..72e9a07 100644
--- a/sysdeps/powerpc/powerpc64/fpu/multiarch/s_isnanf.c
+++ b/sysdeps/powerpc/powerpc64/fpu/multiarch/s_isnanf.c
@@ -40,4 +40,5 @@  libc_ifunc (__isnanf,
 		      ? __isnan_power5
             : __isnan_ppc64);
 
+hidden_def (__isnanf)
 weak_alias (__isnanf, isnanf)
diff --git a/sysdeps/powerpc/powerpc64/multiarch/memcmp.c b/sysdeps/powerpc/powerpc64/multiarch/memcmp.c
index e8cf6ae..a45ebd7 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/memcmp.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/memcmp.c
@@ -18,6 +18,7 @@ 
 
 /* Define multiple versions only for definition in libc.  */
 #if IS_IN (libc)
+# define memcmp __redirect_memcmp
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
@@ -25,15 +26,16 @@ 
 extern __typeof (memcmp) __memcmp_ppc attribute_hidden;
 extern __typeof (memcmp) __memcmp_power4 attribute_hidden;
 extern __typeof (memcmp) __memcmp_power7 attribute_hidden;
+# undef memcmp
 
 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
    ifunc symbol properly.  */
-libc_ifunc (memcmp,
-            (hwcap & PPC_FEATURE_HAS_VSX)
-            ? __memcmp_power7 :
-	      (hwcap & PPC_FEATURE_POWER4)
-		? __memcmp_power4
-            : __memcmp_ppc);
+libc_ifunc_redirected (__redirect_memcmp, memcmp,
+		       (hwcap & PPC_FEATURE_HAS_VSX)
+		       ? __memcmp_power7
+		       : (hwcap & PPC_FEATURE_POWER4)
+			 ? __memcmp_power4
+			 : __memcmp_ppc);
 #else
 #include <string/memcmp.c>
 #endif
diff --git a/sysdeps/powerpc/powerpc64/multiarch/mempcpy.c b/sysdeps/powerpc/powerpc64/multiarch/mempcpy.c
index 3c77b5f..36ec954 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/mempcpy.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/mempcpy.c
@@ -17,23 +17,28 @@ 
    <http://www.gnu.org/licenses/>.  */
 
 #if IS_IN (libc)
+# define mempcpy __redirect_mempcpy
+# define __mempcpy __redirect___mempcpy
 # define NO_MEMPCPY_STPCPY_REDIRECT
+/* Omit the mempcpy inline definitions because it would redefine mempcpy.  */
+# define _HAVE_STRING_ARCH_mempcpy 1
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
 
 extern __typeof (__mempcpy) __mempcpy_ppc attribute_hidden;
 extern __typeof (__mempcpy) __mempcpy_power7 attribute_hidden;
+# undef mempcpy
+# undef __mempcpy
 
 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
    ifunc symbol properly.  */
-libc_ifunc (__mempcpy,
-	    (hwcap & PPC_FEATURE_HAS_VSX)
-            ? __mempcpy_power7
-            : __mempcpy_ppc);
+libc_ifunc_redirected (__redirect___mempcpy, __mempcpy,
+		       (hwcap & PPC_FEATURE_HAS_VSX)
+		       ? __mempcpy_power7
+		       : __mempcpy_ppc);
 
 weak_alias (__mempcpy, mempcpy)
-libc_hidden_def (mempcpy)
 #else
 # include <string/mempcpy.c>
 #endif
diff --git a/sysdeps/powerpc/powerpc64/multiarch/rawmemchr.c b/sysdeps/powerpc/powerpc64/multiarch/rawmemchr.c
index f06030e..b53b148 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/rawmemchr.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/rawmemchr.c
@@ -17,19 +17,21 @@ 
    <http://www.gnu.org/licenses/>.  */
 
 #if IS_IN (libc)
+# define __rawmemchr __redirect___rawmemchr
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
 
 extern __typeof (__rawmemchr) __rawmemchr_ppc attribute_hidden;
 extern __typeof (__rawmemchr) __rawmemchr_power7 attribute_hidden;
+# undef __rawmemchr
 
 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
    ifunc symbol properly.  */
-libc_ifunc (__rawmemchr,
-	    (hwcap & PPC_FEATURE_HAS_VSX)
-            ? __rawmemchr_power7
-            : __rawmemchr_ppc);
+libc_ifunc_redirected (__redirect___rawmemchr, __rawmemchr,
+		       (hwcap & PPC_FEATURE_HAS_VSX)
+		       ? __rawmemchr_power7
+		       : __rawmemchr_ppc);
 
 weak_alias (__rawmemchr, rawmemchr)
 #else
diff --git a/sysdeps/powerpc/powerpc64/multiarch/stpcpy.c b/sysdeps/powerpc/powerpc64/multiarch/stpcpy.c
index bbc1691..3867b9e 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/stpcpy.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/stpcpy.c
@@ -34,6 +34,7 @@  libc_ifunc (__stpcpy,
             : __stpcpy_ppc);
 
 weak_alias (__stpcpy, stpcpy)
+libc_hidden_def (__stpcpy)
 libc_hidden_def (stpcpy)
 #else
 # include <string/stpcpy.c>
diff --git a/sysdeps/powerpc/powerpc64/multiarch/stpncpy.c b/sysdeps/powerpc/powerpc64/multiarch/stpncpy.c
index b1484b1..fb3b529 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/stpncpy.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/stpncpy.c
@@ -17,6 +17,8 @@ 
    <http://www.gnu.org/licenses/>.  */
 
 #if IS_IN (libc)
+# define stpncpy __redirect_stpncpy
+# define __stpncpy __redirect___stpncpy
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
@@ -24,13 +26,14 @@ 
 extern __typeof (__stpncpy) __stpncpy_ppc attribute_hidden;
 extern __typeof (__stpncpy) __stpncpy_power7 attribute_hidden;
 extern __typeof (__stpncpy) __stpncpy_power8 attribute_hidden;
+# undef stpncpy
+# undef __stpncpy
 
-libc_ifunc (__stpncpy,
-            (hwcap2 & PPC_FEATURE2_ARCH_2_07)
-            ? __stpncpy_power8 :
-              (hwcap & PPC_FEATURE_HAS_VSX)
-              ? __stpncpy_power7
-            : __stpncpy_ppc);
-
+libc_ifunc_redirected (__redirect___stpncpy, __stpncpy,
+		       (hwcap2 & PPC_FEATURE2_ARCH_2_07)
+		       ? __stpncpy_power8
+		       : (hwcap & PPC_FEATURE_HAS_VSX)
+			 ? __stpncpy_power7
+			 : __stpncpy_ppc);
 weak_alias (__stpncpy, stpncpy)
 #endif
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcat.c b/sysdeps/powerpc/powerpc64/multiarch/strcat.c
index a2894ae..5080ed1 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strcat.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strcat.c
@@ -17,6 +17,7 @@ 
    <http://www.gnu.org/licenses/>.  */
 
 #if IS_IN (libc)
+# define strcat __redirect_strcat
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
@@ -24,11 +25,12 @@ 
 extern __typeof (strcat) __strcat_ppc attribute_hidden;
 extern __typeof (strcat) __strcat_power7 attribute_hidden;
 extern __typeof (strcat) __strcat_power8 attribute_hidden;
+# undef strcat
 
-libc_ifunc (strcat,
-            (hwcap2 & PPC_FEATURE2_ARCH_2_07)
-            ? __strcat_power8 :
-              (hwcap & PPC_FEATURE_HAS_VSX)
-              ? __strcat_power7
-            : __strcat_ppc);
+libc_ifunc_redirected (__redirect_strcat, strcat,
+		       (hwcap2 & PPC_FEATURE2_ARCH_2_07)
+		       ? __strcat_power8
+		       : (hwcap & PPC_FEATURE_HAS_VSX)
+			 ? __strcat_power7
+			 : __strcat_ppc);
 #endif
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strchr.c b/sysdeps/powerpc/powerpc64/multiarch/strchr.c
index 2cfde63..e24d6b3 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strchr.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strchr.c
@@ -18,18 +18,22 @@ 
 
 /* Define multiple versions only for definition in libc.  */
 #if defined SHARED && IS_IN (libc)
+# define strchr __redirect_strchr
+/* Omit the strchr inline definitions because it would redefine strchr.  */
+# define __NO_STRING_INLINES
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
 
 extern __typeof (strchr) __strchr_ppc attribute_hidden;
 extern __typeof (strchr) __strchr_power7 attribute_hidden;
+# undef strchr
 
 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
    ifunc symbol properly.  */
-libc_ifunc (strchr,
-	    (hwcap & PPC_FEATURE_HAS_VSX)
-            ? __strchr_power7
-            : __strchr_ppc);
+libc_ifunc_redirected (__redirect_strchr, strchr,
+		       (hwcap & PPC_FEATURE_HAS_VSX)
+		       ? __strchr_power7
+		       : __strchr_ppc);
 weak_alias (strchr, index)
 #endif
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcmp.c b/sysdeps/powerpc/powerpc64/multiarch/strcmp.c
index aee888a..06f89cb 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strcmp.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strcmp.c
@@ -17,6 +17,9 @@ 
    <http://www.gnu.org/licenses/>.  */
 
 #if defined SHARED && IS_IN (libc)
+# define strcmp __redirect_strcmp
+/* Omit the strcmp inline definitions because it would redefine strcmp.  */
+# define __NO_STRING_INLINES
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
@@ -24,11 +27,12 @@ 
 extern __typeof (strcmp) __strcmp_ppc attribute_hidden;
 extern __typeof (strcmp) __strcmp_power7 attribute_hidden;
 extern __typeof (strcmp) __strcmp_power8 attribute_hidden;
+# undef strcmp
 
-libc_ifunc (strcmp,
-            (hwcap2 & PPC_FEATURE2_ARCH_2_07)
-              ? __strcmp_power8 :
-              (hwcap & PPC_FEATURE_HAS_VSX)
-              ? __strcmp_power7
-            : __strcmp_ppc);
+libc_ifunc_redirected (__redirect_strcmp, strcmp,
+		       (hwcap2 & PPC_FEATURE2_ARCH_2_07)
+		       ? __strcmp_power8
+		       : (hwcap & PPC_FEATURE_HAS_VSX)
+			 ? __strcmp_power7
+			 : __strcmp_ppc);
 #endif
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcpy.c b/sysdeps/powerpc/powerpc64/multiarch/strcpy.c
index d2c3858..8708fc7 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strcpy.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strcpy.c
@@ -17,6 +17,7 @@ 
    <http://www.gnu.org/licenses/>.  */
 
 #if defined SHARED && IS_IN (libc)
+# define strcpy __redirect_strcpy
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
@@ -24,11 +25,12 @@ 
 extern __typeof (strcpy) __strcpy_ppc attribute_hidden;
 extern __typeof (strcpy) __strcpy_power7 attribute_hidden;
 extern __typeof (strcpy) __strcpy_power8 attribute_hidden;
+#undef strcpy
 
-libc_ifunc (strcpy,
-            (hwcap2 & PPC_FEATURE2_ARCH_2_07)
-            ? __strcpy_power8 :
-              (hwcap & PPC_FEATURE_HAS_VSX)
-              ? __strcpy_power7
-            : __strcpy_ppc);
+libc_ifunc_redirected (__redirect_strcpy, strcpy,
+		       (hwcap2 & PPC_FEATURE2_ARCH_2_07)
+		       ? __strcpy_power8
+		       : (hwcap & PPC_FEATURE_HAS_VSX)
+			 ? __strcpy_power7
+			 : __strcpy_ppc);
 #endif
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strncmp.c b/sysdeps/powerpc/powerpc64/multiarch/strncmp.c
index 1eb6e51..63a1aa0 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strncmp.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strncmp.c
@@ -18,6 +18,9 @@ 
 
 /* Define multiple versions only for definition in libc.  */
 #if defined SHARED && IS_IN (libc)
+# define strncmp __redirect_strncmp
+/* Omit the strncmp inline definitions because it would redefine strncmp.  */
+# define __NO_STRING_INLINES
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
@@ -26,15 +29,16 @@  extern __typeof (strncmp) __strncmp_ppc attribute_hidden;
 extern __typeof (strncmp) __strncmp_power4 attribute_hidden;
 extern __typeof (strncmp) __strncmp_power7 attribute_hidden;
 extern __typeof (strncmp) __strncmp_power8 attribute_hidden;
+# undef strncmp
 
 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
    ifunc symbol properly.  */
-libc_ifunc (strncmp,
-            (hwcap2 & PPC_FEATURE2_ARCH_2_07)
-            ? __strncmp_power8 :
-              (hwcap & PPC_FEATURE_HAS_VSX)
-              ? __strncmp_power7 :
-		(hwcap & PPC_FEATURE_POWER4)
-		? __strncmp_power4
-            : __strncmp_ppc);
+libc_ifunc_redirected (__redirect_strncmp, strncmp,
+		       (hwcap2 & PPC_FEATURE2_ARCH_2_07)
+		       ? __strncmp_power8
+		       : (hwcap & PPC_FEATURE_HAS_VSX)
+			 ? __strncmp_power7
+			 : (hwcap & PPC_FEATURE_POWER4)
+			   ? __strncmp_power4
+			   : __strncmp_ppc);
 #endif
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strncpy.c b/sysdeps/powerpc/powerpc64/multiarch/strncpy.c
index 0176514..64495df 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strncpy.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strncpy.c
@@ -18,6 +18,9 @@ 
 
 /* Define multiple versions only for definition in libc. */
 #if IS_IN (libc)
+# define strncpy __redirect_strncpy
+/* Omit the strncpy inline definitions because it would redefine strncpy.  */
+# define __NO_STRING_INLINES
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
@@ -25,14 +28,15 @@ 
 extern __typeof (strncpy) __strncpy_ppc attribute_hidden;
 extern __typeof (strncpy) __strncpy_power7 attribute_hidden;
 extern __typeof (strncpy) __strncpy_power8 attribute_hidden;
+# undef strncpy
 
 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
  ifunc symbol properly. */
-libc_ifunc (strncpy,
-            (hwcap2 & PPC_FEATURE2_ARCH_2_07)
-            ? __strncpy_power8 :
-              (hwcap & PPC_FEATURE_HAS_VSX)
-              ? __strncpy_power7
-            : __strncpy_ppc);
+libc_ifunc_redirected (__redirect_strncpy, strncpy,
+		       (hwcap2 & PPC_FEATURE2_ARCH_2_07)
+		       ? __strncpy_power8
+		       : (hwcap & PPC_FEATURE_HAS_VSX)
+			 ? __strncpy_power7
+			 : __strncpy_ppc);
 
 #endif
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strnlen.c b/sysdeps/powerpc/powerpc64/multiarch/strnlen.c
index c4907e9..71dc12d 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strnlen.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strnlen.c
@@ -17,19 +17,21 @@ 
    <http://www.gnu.org/licenses/>.  */
 
 #if IS_IN (libc)
+# define strnlen __redirect_strnlen
+# define __strnlen __redirect___strnlen
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
 
 extern __typeof (__strnlen) __strnlen_ppc attribute_hidden;
 extern __typeof (__strnlen) __strnlen_power7 attribute_hidden;
-
-libc_ifunc (__strnlen,
-            (hwcap & PPC_FEATURE_HAS_VSX)
-            ? __strnlen_power7
-            : __strnlen_ppc);
+# undef strnlen
+# undef __strnlen
+libc_ifunc_redirected (__redirect___strnlen, __strnlen,
+		       (hwcap & PPC_FEATURE_HAS_VSX)
+		       ? __strnlen_power7
+		       : __strnlen_ppc);
 weak_alias (__strnlen, strnlen)
-libc_hidden_def (strnlen)
 
 #else
 #include <string/strnlen.c>
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strrchr.c b/sysdeps/powerpc/powerpc64/multiarch/strrchr.c
index 45742bc..e485b02 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strrchr.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strrchr.c
@@ -18,18 +18,20 @@ 
 
 /* Define multiple versions only for definition in libc.  */
 #if IS_IN (libc)
+# define strrchr __redirect_strrchr
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
 
 extern __typeof (strrchr) __strrchr_ppc attribute_hidden;
 extern __typeof (strrchr) __strrchr_power7 attribute_hidden;
+#undef strrchr
 
 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
    ifunc symbol properly.  */
-libc_ifunc (strrchr,
-            (hwcap & PPC_FEATURE_HAS_VSX)
-            ? __strrchr_power7
-            : __strrchr_ppc);
+libc_ifunc_redirected (__redirect_strrchr, strrchr,
+		       (hwcap & PPC_FEATURE_HAS_VSX)
+		       ? __strrchr_power7
+		       : __strrchr_ppc);
 weak_alias (strrchr, rindex)
 #endif
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strstr.c b/sysdeps/powerpc/powerpc64/multiarch/strstr.c
index 7efc4b0..9a390c2 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strstr.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strstr.c
@@ -18,17 +18,19 @@ 
 
 /* Define multiple versions only for definition in libc.  */
 #if IS_IN (libc)
+# define strstr __redirect_strstr
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
 
 extern __typeof (strstr) __strstr_ppc attribute_hidden;
 extern __typeof (strstr) __strstr_power7 attribute_hidden;
+# undef strstr
 
 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
    ifunc symbol properly.  */
-libc_ifunc (strstr,
-            (hwcap & PPC_FEATURE_HAS_VSX)
-            ? __strstr_power7
-            : __strstr_ppc);
+libc_ifunc_redirected (__redirect_strstr, strstr,
+		       (hwcap & PPC_FEATURE_HAS_VSX)
+		       ? __strstr_power7
+		       : __strstr_ppc);
 #endif
diff --git a/sysdeps/powerpc/powerpc64/multiarch/wcschr.c b/sysdeps/powerpc/powerpc64/multiarch/wcschr.c
index 44c9b97..a470542 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/wcschr.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/wcschr.c
@@ -17,6 +17,8 @@ 
    <http://www.gnu.org/licenses/>.  */
 
 #if IS_IN (libc)
+# define wcschr __redirect_wcschr
+# define __wcschr __redirect___wcschr
 # include <wchar.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
@@ -24,15 +26,16 @@ 
 extern __typeof (wcschr) __wcschr_ppc attribute_hidden;
 extern __typeof (wcschr) __wcschr_power6 attribute_hidden;
 extern __typeof (wcschr) __wcschr_power7 attribute_hidden;
+# undef wcschr
+# undef __wcschr
 
-libc_ifunc (__wcschr,
-	     (hwcap & PPC_FEATURE_HAS_VSX)
-             ? __wcschr_power7 :
-	       (hwcap & PPC_FEATURE_ARCH_2_05)
-	       ? __wcschr_power6
-             : __wcschr_ppc);
+libc_ifunc_redirected (__redirect___wcschr, __wcschr,
+		       (hwcap & PPC_FEATURE_HAS_VSX)
+		       ? __wcschr_power7
+		       : (hwcap & PPC_FEATURE_ARCH_2_05)
+			 ? __wcschr_power6
+			 : __wcschr_ppc);
 weak_alias (__wcschr, wcschr)
-libc_hidden_builtin_def (wcschr)
 #else
 #undef libc_hidden_def
 #define libc_hidden_def(a)
-- 
2.3.0