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6c6b8c7470
glibc/sysdeps/s390/multiarch
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Stefan Liebler 6c6b8c7470 S390: Unify 31/64bit memcmp. 
The implementation of memcmp for s390-32 (31bit) and
s390-64 (64bit) is nearly the same.
This patch unifies it for maintability reasons.

__memcmp_z10 and __memcmp_z196 differs between 31 and 64bit:
-31bit needs .machinemode "zarch_nohighgprs" and llgfr   %r4,%r4
-lr vs lgr and some other instructions:
But lgr and co can be also used on 31bit as this ifunc variant
is only called if we are on a zarch machine.

__memcmp_default differs between 31 and 64bit:
-Some 31bit vs 64bit instructions (e.g. ltr vs ltgr.
Solved with 31/64 specific instruction macros).
-The address of mvc instruction is setup in different ways
(larl vs bras). Solved with #if defined __s390x__.

Otherwise 31/64bit implementation has the same structure of the code.

ChangeLog:

	* sysdeps/s390/s390-64/memcmp.S: Move to ...
	* sysdeps/s390/memcmp.S: ... here.
	Adjust to be usable for 31/64bit.
	* sysdeps/s390/s390-32/memcmp.S: Delete File.
	* sysdeps/s390/multiarch/Makefile (sysdep_routines): Add memcmp.
	* sysdeps/s390/s390-32/multiarch/Makefile (sysdep_routines):
	Remove memcmp.
	* sysdeps/s390/s390-64/multiarch/Makefile: Likewise.
	* sysdeps/s390/s390-64/multiarch/memcmp-s390x.S: Move to ...
	* sysdeps/s390/multiarch/memcmp-s390x.S: ... here.
	Adjust to be usable for 31/64bit.
	* sysdeps/s390/s390-32/multiarch/memcmp-s390.S: Delete File.
	* sysdeps/s390/s390-64/multiarch/memcmp.c: Move to ...
	* sysdeps/s390/multiarch/memcmp.c: ... here.
	* sysdeps/s390/s390-32/multiarch/memcmp.c: Delete File.
2018-12-18 13:57:05 +01:00
..
iconv Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
8bit-generic.c Fix s390 -Os iconv build. 2018-03-05 21:46:55 +00:00
gconv_simple.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
gen-8bit.sh S390: Optimize 8bit-generic iconv modules. 2016-05-25 17:18:04 +02:00
ifunc-impl-list.c S390: Implement bzero with memset. 2018-12-18 13:57:05 +01:00
ifunc-resolve.h S390: Use hwcap instead of dl_hwcap in ifunc-resolvers. 2018-12-18 13:57:03 +01:00
Makefile S390: Unify 31/64bit memcmp. 2018-12-18 13:57:05 +01:00
memccpy-c.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
memccpy-vx.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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memcmp-s390x.S S390: Unify 31/64bit memcmp. 2018-12-18 13:57:05 +01:00
memcmp.c S390: Unify 31/64bit memcmp. 2018-12-18 13:57:05 +01:00
mempcpy.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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