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| -rw-r--r-- | linuxthreads/ChangeLog | 6 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/s390/pt-machine.h | 76 |
2 files changed, 82 insertions, 0 deletions
diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog index 3366f8ca10..65816bb8b0 100644 --- a/linuxthreads/ChangeLog +++ b/linuxthreads/ChangeLog @@ -1,3 +1,9 @@ +2000-08-02 Andreas Jaeger <aj@suse.de> + + * linuxthreads/sysdeps/s390/pspinlock.c: New file. + * linuxthreads/sysdeps/s390/pt-machine.h: New file. + Patches by Martin Schwidefsky <schwidefsky@de.ibm.com>. + 2000-07-12 Maciej W. Rozycki <macro@ds2.pg.gda.pl> * sysdeps/mips/pspinlock.c (__pthread_spin_lock): Implement for diff --git a/linuxthreads/sysdeps/s390/pt-machine.h b/linuxthreads/sysdeps/s390/pt-machine.h new file mode 100644 index 0000000000..8de4a1a7c4 --- /dev/null +++ b/linuxthreads/sysdeps/s390/pt-machine.h @@ -0,0 +1,76 @@ +/* Machine-dependent pthreads configuration and inline functions. + S390 version. + Copyright (C) 1999 Free Software Foundation, Inc. + Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). + 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef PT_EI +# define PT_EI extern inline +#endif + +/* Spinlock implementation; required. */ +PT_EI int +testandset (int *spinlock) +{ + int ret; + + __asm__ __volatile__( + " lhi 0,1\n" + " l %0,%1\n" + "0: cs %0,0,%1\n" + " jl 0b" + : "=&d" (ret), "+m" (*spinlock) + : : "0", "cc"); + + return ret; +} + + +/* Get some notion of the current stack. Need not be exactly the top + of the stack, just something somewhere in the current frame. */ +#define CURRENT_STACK_FRAME stack_pointer +register char * stack_pointer __asm__ ("15"); + + +/* Compare-and-swap for semaphores. */ + +#define HAS_COMPARE_AND_SWAP + +PT_EI int +__compare_and_swap(long int *p, long int oldval, long int newval) +{ + int retval; + + __asm__ __volatile__( + " lr 0,%2\n" + " cs 0,%3,%1\n" + " ipm %0\n" + " srl %0,28\n" + "0:" + : "=&d" (retval), "+m" (*p) + : "d" (oldval) , "d" (newval) + : "cc", "0"); + return retval == 0; +} + + + +/* Get some notion of the current stack. Need not be exactly the top + of the stack, just something somewhere in the current frame. */ +#define CURRENT_STACK_FRAME stack_pointer +register char * stack_pointer __asm__ ("%r15"); |