diff options
Diffstat (limited to 'sysdeps/x86_64/multiarch/memmove.c')
| -rw-r--r-- | sysdeps/x86_64/multiarch/memmove.c | 58 |
1 files changed, 11 insertions, 47 deletions
diff --git a/sysdeps/x86_64/multiarch/memmove.c b/sysdeps/x86_64/multiarch/memmove.c index 8da5640bb0..d512228eae 100644 --- a/sysdeps/x86_64/multiarch/memmove.c +++ b/sysdeps/x86_64/multiarch/memmove.c @@ -1,6 +1,6 @@ -/* Multiple versions of memmove. +/* Multiple versions of memmmove. All versions must be listed in ifunc-impl-list.c. - Copyright (C) 2010-2016 Free Software Foundation, Inc. + Copyright (C) 2016-2018 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 @@ -17,57 +17,21 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ +/* Define multiple versions only for the definition in libc. */ #if IS_IN (libc) -# define MEMMOVE __memmove_sse2 -# ifdef SHARED -# undef libc_hidden_builtin_def -# define libc_hidden_builtin_def(name) \ - __hidden_ver1 (__memmove_sse2, __GI_memmove, __memmove_sse2); -# endif - -/* Redefine memmove so that the compiler won't complain about the type - mismatch with the IFUNC selector in strong_alias, below. */ -# undef memmove # define memmove __redirect_memmove # include <string.h> # undef memmove -extern __typeof (__redirect_memmove) __memmove_sse2 attribute_hidden; -extern __typeof (__redirect_memmove) __memmove_ssse3 attribute_hidden; -extern __typeof (__redirect_memmove) __memmove_ssse3_back attribute_hidden; -extern __typeof (__redirect_memmove) __memmove_avx_unaligned attribute_hidden; -# ifdef HAVE_AVX512_ASM_SUPPORT - extern __typeof (__redirect_memmove) __memmove_avx512_no_vzeroupper attribute_hidden; -# endif - -#endif +# define SYMBOL_NAME memmove +# include "ifunc-memmove.h" -#include "string/memmove.c" +libc_ifunc_redirected (__redirect_memmove, __libc_memmove, + IFUNC_SELECTOR ()); -#if IS_IN (libc) -# include <shlib-compat.h> -# include "init-arch.h" - -/* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle - ifunc symbol properly. */ -extern __typeof (__redirect_memmove) __libc_memmove; -libc_ifunc (__libc_memmove, -#ifdef HAVE_AVX512_ASM_SUPPORT - HAS_ARCH_FEATURE (AVX512F_Usable) - && HAS_ARCH_FEATURE (Prefer_No_VZEROUPPER) - ? __memmove_avx512_no_vzeroupper - : -#endif - (HAS_ARCH_FEATURE (AVX_Fast_Unaligned_Load) - ? __memmove_avx_unaligned - : (HAS_CPU_FEATURE (SSSE3) - ? (HAS_ARCH_FEATURE (Fast_Copy_Backward) - ? __memmove_ssse3_back : __memmove_ssse3) - : __memmove_sse2))); - -strong_alias (__libc_memmove, memmove) - -# if SHLIB_COMPAT (libc, GLIBC_2_2_5, GLIBC_2_14) -compat_symbol (libc, memmove, memcpy, GLIBC_2_2_5); +strong_alias (__libc_memmove, memmove); +# ifdef SHARED +__hidden_ver1 (__libc_memmove, __GI_memmove, __redirect_memmove) + __attribute__ ((visibility ("hidden"))); # endif #endif |