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author | H.J. Lu <hjl.tools@gmail.com> | 2017-08-04 12:27:00 -0700 |
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committer | H.J. Lu <hjl.tools@gmail.com> | 2017-08-04 12:27:18 -0700 |
commit | fc11ff8d0acebbf0802854156d45cb1d8bb7c079 (patch) | |
tree | f8cdc12b7c6a47541b3afcf1b26394de8cfd199f /sysdeps/x86_64/multiarch/memcpy.c | |
parent | 19f1a11e7ea2a5082bae9d9a079338c5658ba954 (diff) | |
download | glibc-fc11ff8d0acebbf0802854156d45cb1d8bb7c079.tar.gz glibc-fc11ff8d0acebbf0802854156d45cb1d8bb7c079.tar.xz glibc-fc11ff8d0acebbf0802854156d45cb1d8bb7c079.zip |
x86-64: Use IFUNC memcpy and mempcpy in libc.a
Since apply_irel is called before memcpy and mempcpy are called, we can use IFUNC memcpy and mempcpy in libc.a. * sysdeps/x86_64/memmove.S (MEMCPY_SYMBOL): Don't check SHARED. (MEMPCPY_SYMBOL): Likewise. * sysdeps/x86_64/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Test memcpy and mempcpy in libc.a. * sysdeps/x86_64/multiarch/memcpy-ssse3-back.S: Also include in libc.a. * sysdeps/x86_64/multiarch/memcpy-ssse3.S: Likewise. * sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S: Likewise. * sysdeps/x86_64/multiarch/memcpy.c: Also include in libc.a. (__hidden_ver1): Don't use in libc.a. * sysdeps/x86_64/multiarch/memmove-sse2-unaligned-erms.S (__mempcpy): Don't create a weak alias in libc.a. * sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S: Support libc.a. * sysdeps/x86_64/multiarch/mempcpy.c: Also include in libc.a. (__hidden_ver1): Don't use in libc.a.
Diffstat (limited to 'sysdeps/x86_64/multiarch/memcpy.c')
-rw-r--r-- | sysdeps/x86_64/multiarch/memcpy.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/sysdeps/x86_64/multiarch/memcpy.c b/sysdeps/x86_64/multiarch/memcpy.c index 6a2d3539e2..273bc61c0b 100644 --- a/sysdeps/x86_64/multiarch/memcpy.c +++ b/sysdeps/x86_64/multiarch/memcpy.c @@ -17,10 +17,8 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ -/* Define multiple versions only for the definition in lib and for - DSO. In static binaries we need memcpy before the initialization - happened. */ -#if defined SHARED && IS_IN (libc) +/* Define multiple versions only for the definition in libc. */ +#if IS_IN (libc) # define memcpy __redirect_memcpy # include <string.h> # undef memcpy @@ -31,8 +29,10 @@ libc_ifunc_redirected (__redirect_memcpy, __new_memcpy, IFUNC_SELECTOR ()); +# ifdef SHARED __hidden_ver1 (__new_memcpy, __GI_memcpy, __redirect_memcpy) __attribute__ ((visibility ("hidden"))); +# endif # include <shlib-compat.h> versioned_symbol (libc, __new_memcpy, memcpy, GLIBC_2_14); |