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[7/8] Use libc_ifunc macro for vfork in libpthread.

Message ID 1466682952-6301-7-git-send-email-stli@linux.vnet.ibm.com
State Superseded
Headers show

Commit Message

Stefan Liebler June 23, 2016, 11:55 a.m. UTC
This patch uses the libc_ifunc macro to create already existing ifunc functions
vfork_ifunc and __vfork_ifunc if HAVE_IFUNC is defined.

ChangeLog:

	* nptl/pt-vfork.c (DEFINE_VFORK): Use libc_ifunc macro.
---
 nptl/pt-vfork.c | 21 ++++-----------------
 1 file changed, 4 insertions(+), 17 deletions(-)
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Patch

diff --git a/nptl/pt-vfork.c b/nptl/pt-vfork.c
index 8f4be0c..6258835 100644
--- a/nptl/pt-vfork.c
+++ b/nptl/pt-vfork.c
@@ -46,32 +46,19 @@ 
 
 extern __typeof (vfork) __libc_vfork;   /* Defined in libc.  */
 
-static __typeof (vfork) *
-__attribute__ ((used))
-vfork_resolve (void)
-{
-  return &__libc_vfork;
-}
+# define INIT_ARCH()
+# define DEFINE_VFORK(name) libc_ifunc (name, &__libc_vfork)
 
-# ifdef HAVE_ASM_SET_DIRECTIVE
-#  define DEFINE_VFORK(name) \
-  asm (".set " #name ", vfork_resolve\n" \
-       ".globl " #name "\n" \
-       ".type " #name ", %gnu_indirect_function");
-# else
-#  define DEFINE_VFORK(name) \
-  asm (#name " = vfork_resolve\n" \
-       ".globl " #name "\n" \
-       ".type " #name ", %gnu_indirect_function");
-# endif
 #endif
 
 #if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_20)
+extern __typeof(vfork) vfork_ifunc;
 DEFINE_VFORK (vfork_ifunc)
 compat_symbol (libpthread, vfork_ifunc, vfork, GLIBC_2_0);
 #endif
 
 #if SHLIB_COMPAT (libpthread, GLIBC_2_1_2, GLIBC_2_20)
+extern __typeof(vfork) __vfork_ifunc;
 DEFINE_VFORK (__vfork_ifunc)
 compat_symbol (libpthread, __vfork_ifunc, __vfork, GLIBC_2_1_2);
 #endif