From 051f8be7c9466c7e53bf1f3a9d5a83c53a7ea815 Mon Sep 17 00:00:00 2001 From: Stefan Liebler Date: Fri, 7 Oct 2016 09:56:47 +0200 Subject: [PATCH] Use libc_ifunc macro for vfork in libpthread. 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. --- ChangeLog | 4 ++++ nptl/pt-vfork.c | 22 +++++----------------- 2 files changed, 9 insertions(+), 17 deletions(-) diff --git a/ChangeLog b/ChangeLog index 4adcebd690..fd0ef40dfb 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,9 @@ 2016-10-07 Stefan Liebler + * nptl/pt-vfork.c (DEFINE_VFORK): Use libc_ifunc macro. + +2016-10-07 Stefan Liebler + * nptl/pt-system.c (system_ifunc): Use libc_ifunc macro. 2016-10-07 Stefan Liebler diff --git a/nptl/pt-vfork.c b/nptl/pt-vfork.c index 8f4be0c4b3..563e3ec12f 100644 --- a/nptl/pt-vfork.c +++ b/nptl/pt-vfork.c @@ -46,32 +46,20 @@ extern __typeof (vfork) __libc_vfork; /* Defined in libc. */ -static __typeof (vfork) * -__attribute__ ((used)) -vfork_resolve (void) -{ - return &__libc_vfork; -} +# undef INIT_ARCH +# 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 -- 2.11.4.GIT