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author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2012-09-15 21:43:27 +0200 |
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committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2012-09-15 21:43:27 +0200 |
commit | e79751ffaff3d489498b1c17e3d2aa890fcef6bc (patch) | |
tree | 67f1587f35b8a789b6571c58fde09fad3907d414 /sysdeps/powerpc/bits/machine-lock.h | |
parent | ce51f55217a6dc7f1e611d10e0b09c6d39152a8f (diff) | |
parent | 640cfa0a4af3dc399bff496fd94081a99dbbcdd2 (diff) |
Merge branch 'master' of git.savannah.gnu.org:/srv/git/hurd/libpthread
Diffstat (limited to 'sysdeps/powerpc/bits/machine-lock.h')
-rw-r--r-- | sysdeps/powerpc/bits/machine-lock.h | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/sysdeps/powerpc/bits/machine-lock.h b/sysdeps/powerpc/bits/machine-lock.h deleted file mode 100644 index cba6b0a..0000000 --- a/sysdeps/powerpc/bits/machine-lock.h +++ /dev/null @@ -1,78 +0,0 @@ -/* Machine-specific definition for spin locks. PowerPC version. - Copyright (C) 1994,97,2002 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#ifndef _MACHINE_LOCK_H -#define _MACHINE_LOCK_H - -/* The type of a spin lock variable. */ - -typedef __volatile long int __spin_lock_t; - -/* Value to initialize `__spin_lock_t' variables to. */ - -#define __SPIN_LOCK_INITIALIZER 0L - - -#ifndef _EXTERN_INLINE -#define _EXTERN_INLINE extern __inline -#endif - -/* Unlock LOCK. */ - -_EXTERN_INLINE void -__spin_unlock (__spin_lock_t *__lock) -{ - long int __locked; - __asm__ __volatile__ ("\ -0: lwarx %0,0,%1\n\ - stwcx. %2,0,%1\n\ - bne- 0b\n\ -" : "=&r" (__locked) : "r" (__lock), "r" (0) : "cr0"); -} - -/* Try to lock LOCK; return nonzero if we locked it, zero if another has. */ - -_EXTERN_INLINE int -__spin_try_lock (register __spin_lock_t *__lock) -{ - long int __rtn; - __asm__ __volatile__ ("\ -0: lwarx %0,0,%1\n\ - stwcx. %2,0,%1\n\ - bne- 0b\n\ -" : "=&r" (__rtn) : "r" (__lock), "r" (1) : "cr0"); - return !__rtn; -} - -/* Return nonzero if LOCK is locked. */ - -_EXTERN_INLINE int -__spin_lock_locked (__spin_lock_t *__lock) -{ - long int __rtn; - __asm__ __volatile__ ("\ -0: lwarx %0,0,%1\n\ - stwcx. %0,0,%1\n\ - bne- 0b\n\ -" : "=&r" (__rtn) : "r" (__lock) : "cr0"); - return __rtn; -} - - -#endif /* machine-lock.h */ |