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| author | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2014-05-22 07:53:44 -0500 |
|---|---|---|
| committer | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2014-05-22 07:53:44 -0500 |
| commit | 3d2badacf185fac740a2992240a817fb2ca325af (patch) | |
| tree | fc35b1dd8bbab1e2d88d98a181bbd9d31a90f96f | |
| parent | df54acbb7b0a2efe22e7bf369ff1055211b9fe58 (diff) | |
| download | glibc-3d2badacf185fac740a2992240a817fb2ca325af.tar.gz glibc-3d2badacf185fac740a2992240a817fb2ca325af.tar.xz glibc-3d2badacf185fac740a2992240a817fb2ca325af.zip | |
PowerPC: Fix memchr ifunc hidden symbol for PPC32
This patch fixes a similar issue to 736c304a1ab4cee36a2f3343f1698bc0abae4608, where for PPC32 if the symbol is defined as hidden (memchr) then compiler will create a local branc (symbol@local) and the linker will not create a required PLT call to make the ifunc work. It changes the default hidden symbol (__GI_memchr) to default memchr symbol for powerpc32 (__memchr_ppc32).
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | sysdeps/powerpc/powerpc32/power4/multiarch/memchr-ppc32.c | 3 | ||||
| -rw-r--r-- | sysdeps/powerpc/powerpc32/power4/multiarch/memchr.c | 21 |
3 files changed, 21 insertions, 10 deletions
diff --git a/ChangeLog b/ChangeLog index e538bca0d1..77fed0ce52 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,10 @@ +2014-05-22 Adhemerval Zanella <azanella@linux.vnet.ibm.com> + + * sysdeps/powerpc/powerpc32/power4/multiarch/memchr.c (memchr): Remove + libc_hidden_builtin_def to ifunc. + * sysdeps/powerpc/powerpc32/power4/multiarch/memchr-ppc32.c + [libc_hidden_builtin_def]: Define hidden definition to __memchr_ppc32. + 2014-05-16 Roland McGrath <roland@hack.frob.com> * sysdeps/unix/sysv/linux/aarch64/arch-fork.h: New file. diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memchr-ppc32.c b/sysdeps/powerpc/powerpc32/power4/multiarch/memchr-ppc32.c index 4bd6bb996b..f5db4a8c09 100644 --- a/sysdeps/powerpc/powerpc32/power4/multiarch/memchr-ppc32.c +++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memchr-ppc32.c @@ -25,7 +25,8 @@ #ifdef SHARED # undef libc_hidden_builtin_def -# define libc_hidden_builtin_def(name) +# define libc_hidden_builtin_def(name) \ + __hidden_ver1(__memchr_ppc, __GI_memchr, __memchr_ppc); #endif extern __typeof (memchr) __memchr_ppc attribute_hidden; diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memchr.c b/sysdeps/powerpc/powerpc32/power4/multiarch/memchr.c index ca0f714385..94c22ef4ea 100644 --- a/sysdeps/powerpc/powerpc32/power4/multiarch/memchr.c +++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memchr.c @@ -17,22 +17,25 @@ <http://www.gnu.org/licenses/>. */ #ifndef NOT_IN_libc +# undef memcpy +/* Redefine memchr so that the compiler won't make the weak_alias point + to internal hidden definition (__GI_memchr), since PPC32 does not + support local IFUNC calls. */ +# define memchr __redirect_memchr # include <string.h> -# include <shlib-compat.h> # include "init-arch.h" -extern __typeof (__memchr) __memchr_ppc attribute_hidden; -extern __typeof (__memchr) __memchr_power7 attribute_hidden; +extern __typeof (__redirect_memchr) __memchr_ppc attribute_hidden; +extern __typeof (__redirect_memchr) __memchr_power7 attribute_hidden; -/* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle - ifunc symbol properly. */ -libc_ifunc (__memchr, +extern __typeof (__redirect_memchr) __libc_memchr; + +libc_ifunc (__libc_memchr, (hwcap & PPC_FEATURE_HAS_VSX) ? __memchr_power7 : __memchr_ppc); - -weak_alias (__memchr, memchr) -libc_hidden_builtin_def (memchr) +#undef memchr +weak_alias (__libc_memchr, memchr) #else #include <string/memchr.c> #endif |