AuroraMiddleware/glibc
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3 Commits

Author SHA1 Message Date
Joseph Myers
04277e02d7 Update copyright dates with scripts/update-copyrights. 
* All files with FSF copyright notices: Update copyright dates
	using scripts/update-copyrights.
	* locale/programs/charmap-kw.h: Regenerated.
	* locale/programs/locfile-kw.h: Likewise.
 2019-01-01 00:11:28 +00:00
Joseph Myers
688903eb3e Update copyright dates with scripts/update-copyrights. 
* All files with FSF copyright notices: Update copyright dates
	using scripts/update-copyrights.
	* locale/programs/charmap-kw.h: Regenerated.
	* locale/programs/locfile-kw.h: Likewise.
 2018-01-01 00:32:25 +00:00
H.J. Lu
b91a52d0d7 x86-64: Implement memcmp family IFUNC selectors in C 
Implement memcmp family IFUNC selectors in C.

All internal calls within libc.so can use IFUNC on x86-64 since unlike
x86, x86-64 supports PC-relative addressing to access the GOT entry so
that it can call via PLT without using an extra register.  For libc.a,
we can't use IFUNC for functions which are called before IFUNC has been
initialized.  Use IFUNC internally reduces the icache footprint since
libc.so and other codes in the process use the same implementations.
This patch uses IFUNC for memcmp family functions within libc.

	* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add
	memcmp-sse2.
	* sysdeps/x86_64/multiarch/ifunc-memcmp.h: New file.
	* sysdeps/x86_64/multiarch/memcmp-sse2.S: Likewise.
	* sysdeps/x86_64/multiarch/memcmp.c: Likewise.
	* sysdeps/x86_64/multiarch/wmemcmp.c: Likewise.
	* sysdeps/x86_64/multiarch/memcmp.S: Removed.
	* sysdeps/x86_64/multiarch/wmemcmp.S: Likewise.
 2017-06-15 08:49:57 -07:00