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S390: Refactor memset ifunc handling.
This patch moves all ifunc variants for memset to sysdeps/s390/memset-z900.S. The configure-check/preprocessor logic in sysdeps/s390/ifunc-memset.h decides if ifunc is needed at all and which ifunc variants should be available. E.g. if the compiler/assembler already supports z196 by default, the older ifunc variants are not included. If we only need the newest ifunc variant, then we can skip ifunc at all. Therefore the ifunc-resolvers and __libc_ifunc_impl_list are adjusted in order to handle only the available ifunc variants. ChangeLog: * sysdeps/s390/ifunc-memset.h: New File. * sysdeps/s390/memset.S: Move to ... * sysdeps/s390/memset-z900.S ... here. Move implementations from memset-s390x.s to here. * sysdeps/s390/multiarch/memset-s390x.S: Delete File. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Remove memset variants. * sysdeps/s390/Makefile (sysdep_routines): Add memset variants. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Adjust ifunc variants for memset. * sysdeps/s390/multiarch/memset.c: Move ifunc resolver to ... * sysdeps/s390/memset.c: ... here. Adjust ifunc variants for memset.
This commit is contained in:
Stefan Liebler
parent
5f1743d118
commit
712a254a97
19
ChangeLog
19
ChangeLog
@ -1,3 +1,22 @@
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2018-12-18 Stefan Liebler <stli@linux.ibm.com>
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* sysdeps/s390/ifunc-memset.h: New File.
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* sysdeps/s390/memset.S: Move to ...
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* sysdeps/s390/memset-z900.S ... here.
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Move implementations from memset-s390x.s to here.
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* sysdeps/s390/multiarch/memset-s390x.S: Delete File.
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* sysdeps/s390/multiarch/Makefile (sysdep_routines):
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Remove memset variants.
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* sysdeps/s390/Makefile (sysdep_routines):
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Add memset variants.
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* sysdeps/s390/multiarch/ifunc-impl-list.c
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(__libc_ifunc_impl_list): Adjust ifunc variants for
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memset.
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* sysdeps/s390/multiarch/memset.c: Move ifunc resolver
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to ...
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* sysdeps/s390/memset.c: ... here.
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Adjust ifunc variants for memset.
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2018-12-18 Stefan Liebler <stli@linux.ibm.com>
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* sysdeps/s390/s390-64/memset.S: Move to ...
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@ -52,3 +52,7 @@ tst-dl-runtime-profile-noaudit-ENV = $(env-profile)
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tst-dl-runtime-profile-audit-ENV = $(env-profile) $(env-audit)
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endif
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endif
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ifeq ($(subdir),string)
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sysdep_routines += memset memset-z900
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endif
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65
sysdeps/s390/ifunc-memset.h
Normal file
65
sysdeps/s390/ifunc-memset.h
Normal file
@ -0,0 +1,65 @@
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/* memset variant information on S/390 version.
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Copyright (C) 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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#if defined USE_MULTIARCH && IS_IN (libc) \
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&& ! defined HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT
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# define HAVE_MEMSET_IFUNC 1
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#else
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# define HAVE_MEMSET_IFUNC 0
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#endif
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#if defined HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT
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# define MEMSET_DEFAULT MEMSET_Z196
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# define HAVE_MEMSET_Z900_G5 0
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# define HAVE_MEMSET_Z10 0
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# define HAVE_MEMSET_Z196 1
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#elif defined HAVE_S390_MIN_Z10_ZARCH_ASM_SUPPORT
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# define MEMSET_DEFAULT MEMSET_Z10
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# define HAVE_MEMSET_Z900_G5 0
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# define HAVE_MEMSET_Z10 1
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# define HAVE_MEMSET_Z196 HAVE_MEMSET_IFUNC
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#else
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# define MEMSET_DEFAULT MEMSET_Z900_G5
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# define HAVE_MEMSET_Z900_G5 1
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# define HAVE_MEMSET_Z10 HAVE_MEMSET_IFUNC
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# define HAVE_MEMSET_Z196 HAVE_MEMSET_IFUNC
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#endif
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#if HAVE_MEMSET_Z10 || HAVE_MEMSET_Z196
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# define HAVE_MEMSET_MVCLE 1
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#else
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# define HAVE_MEMSET_MVCLE 0
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#endif
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#if HAVE_MEMSET_Z900_G5
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# define MEMSET_Z900_G5 __memset_default
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#else
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# define MEMSET_Z900_G5 NULL
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#endif
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#if HAVE_MEMSET_Z10
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# define MEMSET_Z10 __memset_z10
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#else
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# define MEMSET_Z10 NULL
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#endif
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#if HAVE_MEMSET_Z196
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# define MEMSET_Z196 __memset_z196
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#else
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# define MEMSET_Z196 NULL
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#endif
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@ -1,5 +1,6 @@
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/* Set a block of memory to some byte value. 31/64 bit S/390 version.
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Copyright (C) 2012-2018 Free Software Foundation, Inc.
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Copyright (C) 2001-2018 Free Software Foundation, Inc.
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Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
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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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@ -17,8 +18,9 @@
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<http://www.gnu.org/licenses/>. */
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#include "sysdep.h"
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#include <sysdep.h>
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#include "asm-syntax.h"
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#include <ifunc-memset.h>
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/* INPUT PARAMETERS
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%r2 = address of memory area
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@ -27,9 +29,100 @@
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.text
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#if IS_IN (libc)
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#if HAVE_MEMSET_Z900_G5
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# if defined __s390x__
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# define LTGR ltgr
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# define CGHI cghi
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# define LGR lgr
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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 CGHI chi
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# define LGR lr
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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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ENTRY(__memset_z196)
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ENTRY(MEMSET_Z900_G5)
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#if defined __s390x__
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.machine "z900"
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#else
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.machine "g5"
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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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stc %r3,0(%r2)
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CGHI %r4,1
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LGR %r1,%r2
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je .L_Z900_G5_4
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AGHI %r4,-2
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#if defined __s390x__
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larl %r5,.L_Z900_G5_18
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srlg %r3,%r4,8
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# define Z900_G5_EX_D 0
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#else
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basr %r5,0
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.L_Z900_G5_19:
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# define Z900_G5_EX_D .L_Z900_G5_18-.L_Z900_G5_19
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lr %r3,%r4
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srl %r3,8
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#endif /* ! defined __s390x__ */
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LTGR %r3,%r3
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jne .L_Z900_G5_14
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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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br %r14
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.L_Z900_G5_14:
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mvc 1(256,%r1),0(%r1)
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la %r1,256(%r1)
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BRCTG %r3,.L_Z900_G5_14
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j .L_Z900_G5_3
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.L_Z900_G5_18:
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mvc 1(1,%r1),0(%r1)
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END(MEMSET_Z900_G5)
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# undef LTGR
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# undef CGHI
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# undef LGR
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# undef AGHI
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# undef BRCTG
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#endif /* HAVE_MEMSET_Z900_G5 */
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#if HAVE_MEMSET_Z10
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ENTRY(MEMSET_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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cgije %r4,0,.L_Z10_4
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stc %r3,0(%r2)
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lgr %r1,%r2
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cgije %r4,1,.L_Z10_4
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aghi %r4,-2
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srlg %r5,%r4,8
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cgijlh %r5,0,.L_Z10_15
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.L_Z10_3:
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exrl %r4,.L_Z10_18
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.L_Z10_4:
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br %r14
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.L_Z10_15:
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cgfi %r5,163840 # Switch to mvcle for >40MB
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jh __memset_mvcle
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.L_Z10_14:
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pfd 2,1024(%r1)
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mvc 1(256,%r1),0(%r1)
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la %r1,256(%r1)
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brctg %r5,.L_Z10_14
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j .L_Z10_3
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.L_Z10_18:
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mvc 1(1,%r1),0(%r1)
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END(MEMSET_Z10)
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#endif /* HAVE_MEMSET_Z10 */
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#if HAVE_MEMSET_Z196
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ENTRY(MEMSET_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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@ -61,38 +154,10 @@ ENTRY(__memset_z196)
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j .L_Z196_3
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.L_Z196_17:
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mvc 1(1,%r1),0(%r1)
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END(__memset_z196)
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ENTRY(__memset_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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cgije %r4,0,.L_Z10_4
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stc %r3,0(%r2)
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lgr %r1,%r2
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cgije %r4,1,.L_Z10_4
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aghi %r4,-2
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srlg %r5,%r4,8
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cgijlh %r5,0,.L_Z10_15
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.L_Z10_3:
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exrl %r4,.L_Z10_18
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.L_Z10_4:
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br %r14
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.L_Z10_15:
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cgfi %r5,163840 # Switch to mvcle for >40MB
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jh __memset_mvcle
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.L_Z10_14:
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pfd 2,1024(%r1)
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mvc 1(256,%r1),0(%r1)
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la %r1,256(%r1)
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brctg %r5,.L_Z10_14
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j .L_Z10_3
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.L_Z10_18:
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mvc 1(1,%r1),0(%r1)
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END(__memset_z10)
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END(MEMSET_Z196)
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#endif /* HAVE_MEMSET_Z196 */
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#if HAVE_MEMSET_MVCLE
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ENTRY(__memset_mvcle)
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aghi %r4,2 # take back the change done by the caller
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lgr %r0,%r2 # save source address
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@ -106,15 +171,16 @@ ENTRY(__memset_mvcle)
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.L1:
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br %r14
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END(__memset_mvcle)
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#endif /* HAVE_MEMSET_MVCLE */
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#endif /* IS_IN (libc) */
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#include "../memset.S"
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#if !IS_IN (libc)
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.globl memset
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.set memset,__memset_default
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#elif defined SHARED && IS_IN (libc)
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.globl __GI_memset
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.set __GI_memset,__memset_default
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#if ! HAVE_MEMSET_IFUNC
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/* If we don't use ifunc, define an alias for memset here.
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Otherwise see sysdeps/s390/memset.c. */
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strong_alias (MEMSET_DEFAULT, memset)
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#endif
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#if defined SHARED && IS_IN (libc)
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/* Defines the internal symbol.
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Compare to libc_hidden_builtin_def (memset) in string/memset.c. */
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strong_alias (MEMSET_DEFAULT, __GI_memset)
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#endif
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@ -1,97 +0,0 @@
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/* Set a block of memory to some byte value. 31/64 bit S/390 version.
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Copyright (C) 2001-2018 Free Software Foundation, Inc.
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Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
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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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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 memory area
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%r3 = byte to fill memory with
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%r4 = number of bytes to fill. */
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.text
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#if defined __s390x__
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# define LTGR ltgr
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# define CGHI cghi
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# define LGR lgr
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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 CGHI chi
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# define LGR lr
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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(__memset_default)
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#else
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ENTRY(memset)
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#endif
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#if defined __s390x__
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.machine "z900"
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#else
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.machine "g5"
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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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stc %r3,0(%r2)
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CGHI %r4,1
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LGR %r1,%r2
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je .L_Z900_G5_4
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AGHI %r4,-2
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#if defined __s390x__
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larl %r5,.L_Z900_G5_18
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srlg %r3,%r4,8
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# define Z900_G5_EX_D 0
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#else
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basr %r5,0
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.L_Z900_G5_19:
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# define Z900_G5_EX_D .L_Z900_G5_18-.L_Z900_G5_19
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lr %r3,%r4
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srl %r3,8
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#endif /* ! defined __s390x__ */
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LTGR %r3,%r3
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jne .L_Z900_G5_14
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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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br %r14
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.L_Z900_G5_14:
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mvc 1(256,%r1),0(%r1)
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la %r1,256(%r1)
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BRCTG %r3,.L_Z900_G5_14
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j .L_Z900_G5_3
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.L_Z900_G5_18:
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mvc 1(1,%r1),0(%r1)
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#ifdef USE_MULTIARCH
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END(__memset_default)
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#else
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END(memset)
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libc_hidden_builtin_def (memset)
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#endif
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#undef LTGR
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#undef CGHI
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#undef LGR
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#undef AGHI
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#undef BRCTG
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@ -16,11 +16,33 @@
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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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#include <ifunc-memset.h>
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#if HAVE_MEMSET_IFUNC
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# define memset __redirect_memset
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# include <string.h>
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# undef memset
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# include <ifunc-resolve.h>
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s390_libc_ifunc (__redirect_memset, __memset, memset)
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# if HAVE_MEMSET_Z900_G5
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extern __typeof (__redirect_memset) MEMSET_Z900_G5 attribute_hidden;
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# endif
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# if HAVE_MEMSET_Z10
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extern __typeof (__redirect_memset) MEMSET_Z10 attribute_hidden;
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# endif
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# if HAVE_MEMSET_Z196
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extern __typeof (__redirect_memset) MEMSET_Z196 attribute_hidden;
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# endif
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s390_libc_ifunc_expr (__redirect_memset, memset,
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({
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s390_libc_ifunc_init ();
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(HAVE_MEMSET_Z196 && S390_IS_Z196 (stfle_bits))
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? MEMSET_Z196
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: (HAVE_MEMSET_Z10 && S390_IS_Z10 (stfle_bits))
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? MEMSET_Z10
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: MEMSET_DEFAULT;
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})
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)
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#endif
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@ -19,8 +19,7 @@ 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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||||
memset memset-s390x
|
||||
mempcpy
|
||||
endif
|
||||
|
||||
ifeq ($(subdir),wcsmbs)
|
||||
|
||||
@ -21,6 +21,7 @@
|
||||
#include <wchar.h>
|
||||
#include <ifunc-impl-list.h>
|
||||
#include <ifunc-resolve.h>
|
||||
#include <ifunc-memset.h>
|
||||
|
||||
/* Maximum number of IFUNC implementations. */
|
||||
#define MAX_IFUNC 3
|
||||
@ -46,12 +47,21 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
|
||||
S390_STORE_STFLE (stfle_bits);
|
||||
}
|
||||
|
||||
#if HAVE_MEMSET_IFUNC
|
||||
IFUNC_IMPL (i, name, memset,
|
||||
# if HAVE_MEMSET_Z196
|
||||
IFUNC_IMPL_ADD (array, i, memset,
|
||||
S390_IS_Z196 (stfle_bits), __memset_z196)
|
||||
S390_IS_Z196 (stfle_bits), MEMSET_Z196)
|
||||
# endif
|
||||
# if HAVE_MEMSET_Z10
|
||||
IFUNC_IMPL_ADD (array, i, memset,
|
||||
S390_IS_Z10 (stfle_bits), __memset_z10)
|
||||
IFUNC_IMPL_ADD (array, i, memset, 1, __memset_default))
|
||||
S390_IS_Z10 (stfle_bits), MEMSET_Z10)
|
||||
# endif
|
||||
# if HAVE_MEMSET_Z900_G5
|
||||
IFUNC_IMPL_ADD (array, i, memset, 1, MEMSET_Z900_G5)
|
||||
# endif
|
||||
)
|
||||
#endif /* HAVE_MEMSET_IFUNC */
|
||||
|
||||
IFUNC_IMPL (i, name, memcmp,
|
||||
IFUNC_IMPL_ADD (array, i, memcmp,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user