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.
This commit is contained in:
Stefan Liebler
parent
07be392807
commit
6c6b8c7470
18
ChangeLog
18
ChangeLog
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@ -1,3 +1,21 @@
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2018-12-18 Stefan Liebler <stli@linux.ibm.com>
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* sysdeps/s390/s390-64/memcmp.S: Move to ...
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* sysdeps/s390/memcmp.S: ... here.
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Adjust to be usable for 31/64bit.
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* sysdeps/s390/s390-32/memcmp.S: Delete File.
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* sysdeps/s390/multiarch/Makefile (sysdep_routines): Add memcmp.
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* sysdeps/s390/s390-32/multiarch/Makefile (sysdep_routines):
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Remove memcmp.
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* sysdeps/s390/s390-64/multiarch/Makefile: Likewise.
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* sysdeps/s390/s390-64/multiarch/memcmp-s390x.S: Move to ...
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* sysdeps/s390/multiarch/memcmp-s390x.S: ... here.
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Adjust to be usable for 31/64bit.
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* sysdeps/s390/s390-32/multiarch/memcmp-s390.S: Delete File.
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* sysdeps/s390/s390-64/multiarch/memcmp.c: Move to ...
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* sysdeps/s390/multiarch/memcmp.c: ... here.
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* sysdeps/s390/s390-32/multiarch/memcmp.c: Delete File.
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2018-12-18 Stefan Liebler <stli@linux.ibm.com>
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* sysdeps/s390/s390-32/bzero.S: Delete file.
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@ -1,4 +1,4 @@
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/* memcmp - compare two memory blocks. 64 bit S/390 version.
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/* memcmp - compare two memory blocks. 31/64 bit S/390 version.
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Copyright (C) 2012-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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@ -26,34 +26,62 @@
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%r4 = number of bytes to compare. */
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.text
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#if defined __s390x__
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# define LTGR ltgr
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# define AGHI aghi
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# define BRCTG brctg
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#else
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# define LTGR ltr
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# define AGHI ahi
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# define BRCTG brct
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#endif /* ! defined __s390x__ */
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#ifdef USE_MULTIARCH
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ENTRY(__memcmp_default)
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#else
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ENTRY(memcmp)
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#endif
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#if defined __s390x__
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.machine "z900"
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ltgr %r4,%r4
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je .L_Z900_4
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aghi %r4,-1
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#else
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.machine "g5"
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basr %r5,0
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.L_Z900_G5_16:
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# define Z900_G5_EX_D .L_Z900_G5_15-.L_Z900_G5_16
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#endif /* ! defined __s390x__ */
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LTGR %r4,%r4
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je .L_Z900_G5_4
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AGHI %r4,-1
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#if defined __s390x__
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srlg %r1,%r4,8
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ltgr %r1,%r1
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jne .L_Z900_12
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.L_Z900_3:
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larl %r1,.L_Z900_15
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ex %r4,0(%r1)
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.L_Z900_4:
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larl %r5,.L_Z900_G5_15
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# define Z900_G5_EX_D 0
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#else
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lr %r1,%r4
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srl %r1,8
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#endif /* ! defined __s390x__ */
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LTGR %r1,%r1
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jne .L_Z900_G5_12
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.L_Z900_G5_3:
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ex %r4,Z900_G5_EX_D(%r5)
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.L_Z900_G5_4:
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ipm %r2
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#if defined __s390x__
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sllg %r2,%r2,34
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srag %r2,%r2,62
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#else
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sll %r2,2
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sra %r2,30
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#endif /* ! defined __s390x__ */
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br %r14
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.L_Z900_12:
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.L_Z900_G5_12:
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clc 0(256,%r3),0(%r2)
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jne .L_Z900_4
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jne .L_Z900_G5_4
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la %r3,256(%r3)
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la %r2,256(%r2)
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brctg %r1,.L_Z900_12
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j .L_Z900_3
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.L_Z900_15:
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BRCTG %r1,.L_Z900_G5_12
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j .L_Z900_G5_3
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.L_Z900_G5_15:
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clc 0(1,%r3),0(%r2)
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#ifdef USE_MULTIARCH
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END(__memcmp_default)
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@ -62,3 +90,7 @@ END(memcmp)
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libc_hidden_builtin_def (memcmp)
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weak_alias (memcmp, bcmp)
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#endif
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#undef LTGR
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#undef AGHI
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#undef BRCTG
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@ -19,7 +19,8 @@ sysdep_routines += strlen strlen-vx strlen-c \
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rawmemchr rawmemchr-vx rawmemchr-c \
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memccpy memccpy-vx memccpy-c \
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memrchr memrchr-vx memrchr-c \
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mempcpy
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mempcpy \
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memcmp memcmp-s390x
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endif
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ifeq ($(subdir),wcsmbs)
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@ -1,4 +1,4 @@
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/* CPU specific memcmp implementations. 64 bit S/390 version.
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/* CPU specific memcmp implementations. 31/64 bit S/390 version.
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Copyright (C) 2012-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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@ -31,6 +31,10 @@
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ENTRY(__memcmp_z196)
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.machine "z196"
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.machinemode "zarch_nohighgprs"
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# if !defined __s390x__
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llgfr %r4,%r4
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# endif /* !defined __s390x__ */
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ltgr %r4,%r4
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je .L_Z196_4
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aghi %r4,-1
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@ -64,6 +68,10 @@ END(__memcmp_z196)
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ENTRY(__memcmp_z10)
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.machine "z10"
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.machinemode "zarch_nohighgprs"
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# if !defined __s390x__
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llgfr %r4,%r4
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# endif /* !defined __s390x__ */
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ltgr %r4,%r4
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je .L_Z10_4
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aghi %r4,-1
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@ -1,66 +0,0 @@
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/* memcmp - compare two memory blocks. 32 bit S/390 version.
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Copyright (C) 2012-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include "sysdep.h"
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#include "asm-syntax.h"
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/* INPUT PARAMETERS
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%r2 = address of first memory area
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%r3 = address of second memory area
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%r4 = number of bytes to compare. */
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.text
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#ifdef USE_MULTIARCH
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ENTRY(__memcmp_default)
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#else
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ENTRY(memcmp)
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#endif
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.machine "g5"
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basr %r5,0
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.L_G5_16:
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ltr %r4,%r4
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je .L_G5_4
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ahi %r4,-1
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lr %r1,%r4
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srl %r1,8
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ltr %r1,%r1
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jne .L_G5_12
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ex %r4,.L_G5_17-.L_G5_16(%r5)
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.L_G5_4:
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ipm %r2
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sll %r2,2
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sra %r2,30
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br %r14
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.L_G5_12:
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clc 0(256,%r3),0(%r2)
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jne .L_G5_4
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la %r3,256(%r3)
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la %r2,256(%r2)
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brct %r1,.L_G5_12
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ex %r4,.L_G5_17-.L_G5_16(%r5)
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j .L_G5_4
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.L_G5_17:
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clc 0(1,%r3),0(%r2)
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#ifdef USE_MULTIARCH
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END(__memcmp_default)
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#else
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END(memcmp)
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libc_hidden_builtin_def (memcmp)
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weak_alias(memcmp, bcmp)
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#endif
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@ -1,3 +1,3 @@
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ifeq ($(subdir),string)
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sysdep_routines += memcpy memcpy-s390 memcmp memcmp-s390
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sysdep_routines += memcpy memcpy-s390
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endif
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@ -1,107 +0,0 @@
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/* CPU specific memcmp implementations. 32 bit S/390 version.
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Copyright (C) 2012-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include "sysdep.h"
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#include "asm-syntax.h"
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/* INPUT PARAMETERS
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%r2 = address of first memory area
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%r3 = address of second memory area
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%r4 = number of bytes to compare. */
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.text
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#if IS_IN (libc)
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ENTRY(__memcmp_z196)
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.machine "z196"
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.machinemode "zarch_nohighgprs"
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ltr %r4,%r4
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je .L_Z196_4
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ahi %r4,-1
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srlk %r1,%r4,8
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ltr %r1,%r1
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jne .L_Z196_2
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.L_Z196_3:
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exrl %r4,.L_Z196_14
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.L_Z196_4:
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ipm %r2
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sll %r2,2
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sra %r2,30
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br %r14
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.L_Z196_17:
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la %r3,256(%r3)
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la %r2,256(%r2)
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ahi %r1,-1
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je .L_Z196_3
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.L_Z196_2:
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pfd 1,512(%r3)
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pfd 1,512(%r2)
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clc 0(256,%r3),0(%r2)
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je .L_Z196_17
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ipm %r2
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sll %r2,2
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sra %r2,30
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br %r14
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.L_Z196_14:
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clc 0(1,%r3),0(%r2)
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END(__memcmp_z196)
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ENTRY(__memcmp_z10)
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.machine "z10"
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.machinemode "zarch_nohighgprs"
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ltr %r4,%r4
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je .L_Z10_4
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ahi %r4,-1
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lr %r1,%r4
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srl %r1,8
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cijlh %r1,0,.L_Z10_12
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.L_Z10_3:
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exrl %r4,.L_Z10_15
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.L_Z10_4:
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ipm %r2
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sll %r2,2
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sra %r2,30
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br %r14
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.L_Z10_12:
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pfd 1,512(%r3)
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pfd 1,512(%r2)
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clc 0(256,%r3),0(%r2)
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jne .L_Z10_4
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la %r3,256(%r3)
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la %r2,256(%r2)
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brct %r1,.L_Z10_12
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j .L_Z10_3
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.L_Z10_15:
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clc 0(1,%r3),0(%r2)
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END(__memcmp_z10)
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#endif /* IS_IN (libc) */
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#include "../memcmp.S"
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#if !IS_IN (libc)
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.globl memcmp
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.set memcmp,__memcmp_default
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.weak bcmp
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.set bcmp,__memcmp_default
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#elif defined SHARED && IS_IN (libc)
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.globl __GI_memcmp
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.set __GI_memcmp,__memcmp_default
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#endif
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@ -1,3 +1,3 @@
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ifeq ($(subdir),string)
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sysdep_routines += memcpy memcpy-s390x memcmp memcmp-s390x
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sysdep_routines += memcpy memcpy-s390x
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endif
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@ -1,27 +0,0 @@
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/* Multiple versions of memcmp.
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Copyright (C) 2015-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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|
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The GNU C Library is distributed in the hope that it will be useful,
|
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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|
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
|
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<http://www.gnu.org/licenses/>. */
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#if IS_IN (libc)
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# define memcmp __redirect_memcmp
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# include <string.h>
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# undef memcmp
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# include <ifunc-resolve.h>
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s390_libc_ifunc (__redirect_memcmp, __memcmp, memcmp)
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weak_alias (memcmp, bcmp);
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#endif
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