mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
100a7100a7
int for variable OLDVAL and correct inline assembler contraint. * sysdeps/s390/pthread_spin_trylock.c (pthread_spin_trylock): Use type int for variable OLD. * sysdeps/s390/tls.h (TLS_MULTIPLE_THREADS_IN_TCB): Define it only for s390-32. * sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h (SINGLE_THREAD_P): Use global variable __local_multiple_threads instead of multiple_threads field in the TCB.
35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
/* Copyright (C) 2003 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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include "pthreadP.h"
|
|
|
|
int
|
|
pthread_spin_lock (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;
|
|
}
|