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GNU C Library master sources branch master updated. glibc-2.26.9000-913-g4c1d801
- From: siddhesh at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 4 Dec 2017 15:48:19 -0000
- Subject: GNU C Library master sources branch master updated. glibc-2.26.9000-913-g4c1d801
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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=4c1d801a5956f049126ef6cbe22ed23693e77a8c
commit 4c1d801a5956f049126ef6cbe22ed23693e77a8c
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Mon Dec 4 21:17:17 2017 +0530
aarch64: Avoid hidden symbols for memcpy/memmove into static binaries
The __GI_* symbol aliases for __memcpy_generic are unnecessary since
they're never used. Add them only for libc.so to avoid PLT. Maybe
some time in future we need to evaluate the relative cost of PLT vs
gains from multiarch memcpy implementations and take a call on whether
to drop this completely.
* sysdeps/aarch64/multiarch/memcpy_generic.S (__GI_memcpy):
Define only for libc.so.
diff --git a/ChangeLog b/ChangeLog
index a847985..6ac924b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2017-12-04 Siddhesh Poyarekar <siddhesh@sourceware.org>
+
+ * sysdeps/aarch64/multiarch/memcpy_generic.S (__GI_memcpy):
+ Define only for libc.so.
+
2017-12-04 Stefan Liebler <stli@linux.vnet.ibm.com>
* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h
diff --git a/sysdeps/aarch64/multiarch/memcpy_generic.S b/sysdeps/aarch64/multiarch/memcpy_generic.S
index 041a779..edb2e52 100644
--- a/sysdeps/aarch64/multiarch/memcpy_generic.S
+++ b/sysdeps/aarch64/multiarch/memcpy_generic.S
@@ -33,9 +33,11 @@
# undef libc_hidden_builtin_def
# define libc_hidden_builtin_def(name)
+# ifdef SHARED
/* It doesn't make sense to send libc-internal memcpy calls through a PLT. */
.globl __GI_memcpy; __GI_memcpy = __memcpy_generic
.globl __GI_memmove; __GI_memmove = __memmove_generic
+# endif
#endif
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
sysdeps/aarch64/multiarch/memcpy_generic.S | 2 ++
2 files changed, 7 insertions(+), 0 deletions(-)
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