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author | Stefan Liebler <stli@linux.ibm.com> | 2018-12-18 13:57:08 +0100 |
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committer | Stefan Liebler <stli@linux.ibm.com> | 2018-12-18 13:57:08 +0100 |
commit | cdd927d98cc38acf55e1c6594b5c9451df8f239f (patch) | |
tree | 442bb8c8fa5eb23ade648bbc99db0614cbfe56b3 /sysdeps/s390/Makefile | |
parent | 2ee1bc57ab50737ee2ab88c4d796b90e08b4bf93 (diff) | |
download | glibc-cdd927d98cc38acf55e1c6594b5c9451df8f239f.zip glibc-cdd927d98cc38acf55e1c6594b5c9451df8f239f.tar.gz glibc-cdd927d98cc38acf55e1c6594b5c9451df8f239f.tar.bz2 |
S390: Add z13 memmove ifunc variant.
This patch introduces a z13 specific ifunc variant for memmove.
As the common code implementation, it checks if we can copy from
the beginning to the end - with z196 memcpy implementation - or
if we have to copy from the end to the beginning.
The latter case is done by using vector load/store instructions.
If vector instructions are not available, the common-code is
used as fallback. Therefore it is implemented in memmove-c with
a different name.
Furthermore the ifunc logic decides if we need the common-code
implementation at all. If vector instructions are supported
due to the minimum architecture level set we can skip the
common-code ifunc variant.
ChangeLog:
* sysdeps/s390/Makefile (sysdep_routines): Add memmove-c.
* sysdeps/s390/ifunc-memcpy.h (HAVE_MEMMOVE_IFUNC,
HAVE_MEMMOVE_IFUNC_AND_VX_SUPPORT, MEMMOVE_DEFAULT,
HAVE_MEMMOVE_C, MEMMOVE_C, HAVE_MEMMOVE_Z13, MEMMOVE_Z13):
New defines.
* sysdeps/s390/memcpy-z900.S: Add z13 memmove implementation.
* sysdeps/s390/memmove-c.c: New file.
* sysdeps/s390/memmove.c: Likewise.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Add ifunc variants for memmove.
Diffstat (limited to 'sysdeps/s390/Makefile')
-rw-r--r-- | sysdeps/s390/Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sysdeps/s390/Makefile b/sysdeps/s390/Makefile index c196a19..859f36f 100644 --- a/sysdeps/s390/Makefile +++ b/sysdeps/s390/Makefile @@ -56,5 +56,6 @@ endif ifeq ($(subdir),string) sysdep_routines += bzero memset memset-z900 \ memcmp memcmp-z900 \ - mempcpy memcpy memcpy-z900 + mempcpy memcpy memcpy-z900 \ + memmove memmove-c endif |