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S390: Use generic spinlock code.

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This patch removes the s390 specific implementation of spinlock code
and is now using the generic one.

ChangeLog:

	* sysdeps/s390/nptl/pthread_spin_init.c: Delete File.
	* sysdeps/s390/nptl/pthread_spin_lock.c: Likewise.
	* sysdeps/s390/nptl/pthread_spin_trylock.c: Likewise.
	* sysdeps/s390/nptl/pthread_spin_unlock.c: Likewise.
This commit is contained in:
Stefan Liebler 2017-06-06 09:41:56 +02:00
parent 12d2dd7060
commit 4bf7abaeb3
5 changed files with 7 additions and 115 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2017-06-06 Stefan Liebler <stli@linux.vnet.ibm.com>
* sysdeps/s390/nptl/pthread_spin_init.c: Delete File.
* sysdeps/s390/nptl/pthread_spin_lock.c: Likewise.
* sysdeps/s390/nptl/pthread_spin_trylock.c: Likewise.
* sysdeps/s390/nptl/pthread_spin_unlock.c: Likewise.
2017-06-06 Stefan Liebler <stli@linux.vnet.ibm.com>
* NEWS: Mention new spinlock implementation.

19
sysdeps/s390/nptl/pthread_spin_init.c
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@ -1,19 +0,0 @@
/* Copyright (C) 2003-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
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/>. */
/* Not needed. pthread_spin_init is an alias for pthread_spin_unlock. */

32
sysdeps/s390/nptl/pthread_spin_lock.c
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@ -1,32 +0,0 @@
/* Copyright (C) 2003-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
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 "pthreadP.h"
int
pthread_spin_lock (pthread_spinlock_t *lock)
{
int oldval;
__asm__ __volatile__ ("0: lhi %0,0\n"
" cs %0,%2,%1\n"
" jl 0b"
: "=&d" (oldval), "=Q" (*lock)
: "d" (1), "m" (*lock) : "cc" );
return 0;
}

32
sysdeps/s390/nptl/pthread_spin_trylock.c
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@ -1,32 +0,0 @@
/* Copyright (C) 2003-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
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 <errno.h>
#include "pthreadP.h"
int
pthread_spin_trylock (pthread_spinlock_t *lock)
{
int old;
__asm__ __volatile__ ("cs %0,%3,%1"
: "=d" (old), "=Q" (*lock)
: "0" (0), "d" (1), "m" (*lock) : "cc" );
return old != 0 ? EBUSY : 0;
}

32
sysdeps/s390/nptl/pthread_spin_unlock.c
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@ -1,32 +0,0 @@
/* Copyright (C) 2003-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
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/>. */
/* Ugly hack to avoid the declaration of pthread_spin_init. */
#define pthread_spin_init pthread_spin_init_XXX
#include "pthreadP.h"
#undef pthread_spin_init
int
pthread_spin_unlock (pthread_spinlock_t *lock)
{
__asm__ __volatile__ (" xc %O0(4,%R0),%0\n"
" bcr 15,0"
: "=Q" (*lock) : "m" (*lock) : "cc" );
return 0;
}
strong_alias (pthread_spin_unlock, pthread_spin_init)