mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-21 20:40:05 +00:00
S390: Unify 31/64bit memset.
The implementation of memset for s390-32 (31bit) and s390-64 (64bit) is nearly the same. This patch unifies it for maintability reasons. __memset_z10 and __memset_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. __memset_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/memset.S: Move to ... * sysdeps/s390/memset.S: ... here. Adjust to be usable for 31/64bit. * sysdeps/s390/s390-32/memset.S: Delete File. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add memset. * sysdeps/s390/s390-32/multiarch/Makefile (sysdep_routines): Remove memset. * sysdeps/s390/s390-64/multiarch/Makefile: Likewise. * sysdeps/s390/s390-64/multiarch/memset-s390x.S: Move to ... * sysdeps/s390/multiarch/memset-s390x.S: ... here. Adjust to be usable for 31/64bit. * sysdeps/s390/s390-32/multiarch/memset-s390.S: Delete File. * sysdeps/s390/s390-64/multiarch/memset.c: Move to ... * sysdeps/s390/multiarch/memset.c: ... here. * sysdeps/s390/s390-32/multiarch/memset.c: Delete File.
This commit is contained in:
Stefan Liebler
parent
e8023f2685
commit
5f1743d118
18
ChangeLog
18
ChangeLog
@ -1,3 +1,21 @@
|
||||
2018-12-18 Stefan Liebler <stli@linux.ibm.com>
|
||||
|
||||
* sysdeps/s390/s390-64/memset.S: Move to ...
|
||||
* sysdeps/s390/memset.S: ... here.
|
||||
Adjust to be usable for 31/64bit.
|
||||
* sysdeps/s390/s390-32/memset.S: Delete File.
|
||||
* sysdeps/s390/multiarch/Makefile (sysdep_routines): Add memset.
|
||||
* sysdeps/s390/s390-32/multiarch/Makefile (sysdep_routines):
|
||||
Remove memset.
|
||||
* sysdeps/s390/s390-64/multiarch/Makefile: Likewise.
|
||||
* sysdeps/s390/s390-64/multiarch/memset-s390x.S: Move to ...
|
||||
* sysdeps/s390/multiarch/memset-s390x.S: ... here.
|
||||
Adjust to be usable for 31/64bit.
|
||||
* sysdeps/s390/s390-32/multiarch/memset-s390.S: Delete File.
|
||||
* sysdeps/s390/s390-64/multiarch/memset.c: Move to ...
|
||||
* sysdeps/s390/multiarch/memset.c: ... here.
|
||||
* sysdeps/s390/s390-32/multiarch/memset.c: Delete File.
|
||||
|
||||
2018-12-18 Stefan Liebler <stli@linux.ibm.com>
|
||||
|
||||
* sysdeps/s390/multiarch/ifunc-resolve.h
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* Set a block of memory to some byte value. 64 bit S/390 version.
|
||||
/* Set a block of memory to some byte value. 31/64 bit S/390 version.
|
||||
Copyright (C) 2001-2018 Free Software Foundation, Inc.
|
||||
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
|
||||
This file is part of the GNU C Library.
|
||||
@ -28,33 +28,60 @@
|
||||
|
||||
.text
|
||||
|
||||
#if defined __s390x__
|
||||
# define LTGR ltgr
|
||||
# define CGHI cghi
|
||||
# define LGR lgr
|
||||
# define AGHI aghi
|
||||
# define BRCTG brctg
|
||||
#else
|
||||
# define LTGR ltr
|
||||
# define CGHI chi
|
||||
# define LGR lr
|
||||
# define AGHI ahi
|
||||
# define BRCTG brct
|
||||
#endif /* ! defined __s390x__ */
|
||||
|
||||
#ifdef USE_MULTIARCH
|
||||
ENTRY(__memset_default)
|
||||
#else
|
||||
ENTRY(memset)
|
||||
#endif
|
||||
#if defined __s390x__
|
||||
.machine "z900"
|
||||
ltgr %r4,%r4
|
||||
je .L_Z900_4
|
||||
#else
|
||||
.machine "g5"
|
||||
#endif /* ! defined __s390x__ */
|
||||
LTGR %r4,%r4
|
||||
je .L_Z900_G5_4
|
||||
stc %r3,0(%r2)
|
||||
cghi %r4,1
|
||||
lgr %r1,%r2
|
||||
je .L_Z900_4
|
||||
aghi %r4,-2
|
||||
CGHI %r4,1
|
||||
LGR %r1,%r2
|
||||
je .L_Z900_G5_4
|
||||
AGHI %r4,-2
|
||||
#if defined __s390x__
|
||||
larl %r5,.L_Z900_G5_18
|
||||
srlg %r3,%r4,8
|
||||
ltgr %r3,%r3
|
||||
jne .L_Z900_14
|
||||
.L_Z900_3:
|
||||
larl %r3,.L_Z900_18
|
||||
ex %r4,0(%r3)
|
||||
.L_Z900_4:
|
||||
# define Z900_G5_EX_D 0
|
||||
#else
|
||||
basr %r5,0
|
||||
.L_Z900_G5_19:
|
||||
# define Z900_G5_EX_D .L_Z900_G5_18-.L_Z900_G5_19
|
||||
lr %r3,%r4
|
||||
srl %r3,8
|
||||
#endif /* ! defined __s390x__ */
|
||||
LTGR %r3,%r3
|
||||
jne .L_Z900_G5_14
|
||||
.L_Z900_G5_3:
|
||||
ex %r4,Z900_G5_EX_D(%r5)
|
||||
.L_Z900_G5_4:
|
||||
br %r14
|
||||
.L_Z900_14:
|
||||
.L_Z900_G5_14:
|
||||
mvc 1(256,%r1),0(%r1)
|
||||
la %r1,256(%r1)
|
||||
brctg %r3,.L_Z900_14
|
||||
j .L_Z900_3
|
||||
.L_Z900_18:
|
||||
BRCTG %r3,.L_Z900_G5_14
|
||||
j .L_Z900_G5_3
|
||||
.L_Z900_G5_18:
|
||||
mvc 1(1,%r1),0(%r1)
|
||||
#ifdef USE_MULTIARCH
|
||||
END(__memset_default)
|
||||
@ -62,3 +89,9 @@ END(__memset_default)
|
||||
END(memset)
|
||||
libc_hidden_builtin_def (memset)
|
||||
#endif
|
||||
|
||||
#undef LTGR
|
||||
#undef CGHI
|
||||
#undef LGR
|
||||
#undef AGHI
|
||||
#undef BRCTG
|
||||
@ -19,7 +19,8 @@ sysdep_routines += strlen strlen-vx strlen-c \
|
||||
rawmemchr rawmemchr-vx rawmemchr-c \
|
||||
memccpy memccpy-vx memccpy-c \
|
||||
memrchr memrchr-vx memrchr-c \
|
||||
mempcpy
|
||||
mempcpy \
|
||||
memset memset-s390x
|
||||
endif
|
||||
|
||||
ifeq ($(subdir),wcsmbs)
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* Set a block of memory to some byte value. 64 bit S/390 version.
|
||||
/* Set a block of memory to some byte value. 31/64 bit S/390 version.
|
||||
Copyright (C) 2012-2018 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
@ -31,6 +31,10 @@
|
||||
|
||||
ENTRY(__memset_z196)
|
||||
.machine "z196"
|
||||
.machinemode "zarch_nohighgprs"
|
||||
# if !defined __s390x__
|
||||
llgfr %r4,%r4
|
||||
# endif /* !defined __s390x__ */
|
||||
ltgr %r4,%r4
|
||||
je .L_Z196_4
|
||||
stc %r3,0(%r2)
|
||||
@ -61,6 +65,10 @@ END(__memset_z196)
|
||||
|
||||
ENTRY(__memset_z10)
|
||||
.machine "z10"
|
||||
.machinemode "zarch_nohighgprs"
|
||||
# if !defined __s390x__
|
||||
llgfr %r4,%r4
|
||||
# endif /* !defined __s390x__ */
|
||||
cgije %r4,0,.L_Z10_4
|
||||
stc %r3,0(%r2)
|
||||
lgr %r1,%r2
|
||||
@ -1,65 +0,0 @@
|
||||
/* Set a block of memory to some byte value. For IBM S390
|
||||
Copyright (C) 2012-2018 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
|
||||
#include "sysdep.h"
|
||||
#include "asm-syntax.h"
|
||||
|
||||
/* INPUT PARAMETERS
|
||||
%r2 = address to memory area
|
||||
%r3 = byte to fill memory with
|
||||
%r4 = number of bytes to fill. */
|
||||
|
||||
.text
|
||||
|
||||
#ifdef USE_MULTIARCH
|
||||
ENTRY(__memset_default)
|
||||
#else
|
||||
ENTRY(memset)
|
||||
#endif
|
||||
.machine "g5"
|
||||
basr %r5,0
|
||||
.L_G5_19:
|
||||
ltr %r4,%r4
|
||||
je .L_G5_4
|
||||
stc %r3,0(%r2)
|
||||
chi %r4,1
|
||||
lr %r1,%r2
|
||||
je .L_G5_4
|
||||
ahi %r4,-2
|
||||
lr %r3,%r4
|
||||
srl %r3,8
|
||||
ltr %r3,%r3
|
||||
jne .L_G5_14
|
||||
ex %r4,.L_G5_20-.L_G5_19(%r5)
|
||||
.L_G5_4:
|
||||
br %r14
|
||||
.L_G5_14:
|
||||
mvc 1(256,%r1),0(%r1)
|
||||
la %r1,256(%r1)
|
||||
brct %r3,.L_G5_14
|
||||
ex %r4,.L_G5_20-.L_G5_19(%r5)
|
||||
j .L_G5_4
|
||||
.L_G5_20:
|
||||
mvc 1(1,%r1),0(%r1)
|
||||
#ifdef USE_MULTIARCH
|
||||
END(__memset_default)
|
||||
#else
|
||||
END(memset)
|
||||
libc_hidden_builtin_def (memset)
|
||||
#endif
|
||||
@ -1,4 +1,3 @@
|
||||
ifeq ($(subdir),string)
|
||||
sysdep_routines += memset memset-s390 memcpy memcpy-s390 \
|
||||
memcmp memcmp-s390
|
||||
sysdep_routines += memcpy memcpy-s390 memcmp memcmp-s390
|
||||
endif
|
||||
|
||||
@ -1,116 +0,0 @@
|
||||
/* Set a block of memory to some byte value. 32 bit S/390 version.
|
||||
Copyright (C) 2012-2018 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
|
||||
#include "sysdep.h"
|
||||
#include "asm-syntax.h"
|
||||
|
||||
/* INPUT PARAMETERS
|
||||
%r2 = address of memory area
|
||||
%r3 = byte to fill memory with
|
||||
%r4 = number of bytes to fill. */
|
||||
|
||||
.text
|
||||
|
||||
#if IS_IN (libc)
|
||||
|
||||
ENTRY(__memset_z196)
|
||||
.machine "z196"
|
||||
.machinemode "zarch_nohighgprs"
|
||||
llgfr %r4,%r4
|
||||
ltgr %r4,%r4
|
||||
je .L_Z196_4
|
||||
stc %r3,0(%r2)
|
||||
lr %r1,%r2
|
||||
cghi %r4,1
|
||||
je .L_Z196_4
|
||||
aghi %r4,-2
|
||||
srlg %r5,%r4,8
|
||||
ltgr %r5,%r5
|
||||
jne .L_Z196_1
|
||||
.L_Z196_3:
|
||||
exrl %r4,.L_Z196_17
|
||||
.L_Z196_4:
|
||||
br %r14
|
||||
.L_Z196_1:
|
||||
cgfi %r5,1048576
|
||||
jh __memset_mvcle # Switch to mvcle for >256MB
|
||||
.L_Z196_2:
|
||||
pfd 2,1024(%r1)
|
||||
mvc 1(256,%r1),0(%r1)
|
||||
aghi %r5,-1
|
||||
la %r1,256(%r1)
|
||||
jne .L_Z196_2
|
||||
j .L_Z196_3
|
||||
.L_Z196_17:
|
||||
mvc 1(1,%r1),0(%r1)
|
||||
END(__memset_z196)
|
||||
|
||||
ENTRY(__memset_z10)
|
||||
.machine "z10"
|
||||
.machinemode "zarch_nohighgprs"
|
||||
llgfr %r4,%r4
|
||||
cgije %r4,0,.L_Z10_4
|
||||
stc %r3,0(%r2)
|
||||
lr %r1,%r2
|
||||
cgije %r4,1,.L_Z10_4
|
||||
aghi %r4,-2
|
||||
srlg %r5,%r4,8
|
||||
cgijlh %r5,0,.L_Z10_15
|
||||
.L_Z10_3:
|
||||
exrl %r4,.L_Z10_18
|
||||
.L_Z10_4:
|
||||
br %r14
|
||||
.L_Z10_15:
|
||||
cgfi %r5,163840 # Switch to mvcle for >40MB
|
||||
jh __memset_mvcle
|
||||
.L_Z10_14:
|
||||
pfd 2,1024(%r1)
|
||||
mvc 1(256,%r1),0(%r1)
|
||||
la %r1,256(%r1)
|
||||
brctg %r5,.L_Z10_14
|
||||
j .L_Z10_3
|
||||
.L_Z10_18:
|
||||
mvc 1(1,%r1),0(%r1)
|
||||
END(__memset_z10)
|
||||
|
||||
ENTRY(__memset_mvcle)
|
||||
ahi %r4,2 # take back the change done by the caller
|
||||
lr %r0,%r2 # save source address
|
||||
lr %r1,%r3 # move pad byte to R1
|
||||
lr %r3,%r4
|
||||
sr %r4,%r4 # no source for MVCLE, only a pad byte
|
||||
sr %r5,%r5
|
||||
.L0: mvcle %r2,%r4,0(%r1) # thats it, MVCLE is your friend
|
||||
jo .L0
|
||||
lr %r2,%r0 # return value is source address
|
||||
.L1:
|
||||
br %r14
|
||||
END(__memset_mvcle)
|
||||
|
||||
#endif /* IS_IN (libc) */
|
||||
|
||||
#include "../memset.S"
|
||||
|
||||
#if !IS_IN (libc)
|
||||
.globl memset
|
||||
.set memset,__memset_default
|
||||
#elif defined SHARED && IS_IN (libc)
|
||||
.globl __GI_memset
|
||||
.set __GI_memset,__memset_default
|
||||
#endif
|
||||
@ -1,4 +1,3 @@
|
||||
ifeq ($(subdir),string)
|
||||
sysdep_routines += memset memset-s390x memcpy memcpy-s390x \
|
||||
memcmp memcmp-s390x
|
||||
sysdep_routines += memcpy memcpy-s390x memcmp memcmp-s390x
|
||||
endif
|
||||
|
||||
@ -1,26 +0,0 @@
|
||||
/* Multiple versions of memset.
|
||||
Copyright (C) 2015-2018 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#if IS_IN (libc)
|
||||
# define memset __redirect_memset
|
||||
# include <string.h>
|
||||
# undef memset
|
||||
# include <ifunc-resolve.h>
|
||||
|
||||
s390_libc_ifunc (__redirect_memset, __memset, memset)
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user