diff options
| author | Waldemar Brodkorb <wbx@openadk.org> | 2015-02-14 23:00:19 -0600 | 
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2015-02-14 23:00:19 -0600 | 
| commit | 6b6ede3d15f04fe825cfa9f697507457e3640344 (patch) | |
| tree | efe9bf75eaf2200f89087ed0ef2ef350549ccd6d /libpthread/linuxthreads/sysdeps/arm/pspinlock.c | |
| parent | f972c2262fd4efc2bbf9789dce145bb705acec24 (diff) | |
resolve merge
Diffstat (limited to 'libpthread/linuxthreads/sysdeps/arm/pspinlock.c')
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/arm/pspinlock.c | 81 | 
1 files changed, 0 insertions, 81 deletions
| diff --git a/libpthread/linuxthreads/sysdeps/arm/pspinlock.c b/libpthread/linuxthreads/sysdeps/arm/pspinlock.c deleted file mode 100644 index 691085270..000000000 --- a/libpthread/linuxthreads/sysdeps/arm/pspinlock.c +++ /dev/null @@ -1,81 +0,0 @@ -/* POSIX spinlock implementation.  Arm version. -   Copyright (C) 2000 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; see the file COPYING.LIB.  If -   not, see <http://www.gnu.org/licenses/>.  */ - -#include <errno.h> -#include <pthread.h> -#include "internals.h" - - -int -__pthread_spin_lock (pthread_spinlock_t *lock) -{ -  unsigned int val; - -  do -    __asm__ __volatile__ ("swp %0, %1, [%2]" -		  : "=r" (val) -		  : "0" (1), "r" (lock) -		  : "memory"); -  while (val != 0); - -  return 0; -} -weak_alias (__pthread_spin_lock, pthread_spin_lock) - - -int -__pthread_spin_trylock (pthread_spinlock_t *lock) -{ -  unsigned int val; - -  __asm__ __volatile__ ("swp %0, %1, [%2]" -		: "=r" (val) -		: "0" (1), "r" (lock) -		: "memory"); - -  return val ? EBUSY : 0; -} -weak_alias (__pthread_spin_trylock, pthread_spin_trylock) - - -int -__pthread_spin_unlock (pthread_spinlock_t *lock) -{ -  return *lock = 0; -} -weak_alias (__pthread_spin_unlock, pthread_spin_unlock) - - -int -__pthread_spin_init (pthread_spinlock_t *lock, int pshared) -{ -  /* We can ignore the `pshared' parameter.  Since we are busy-waiting -     all processes which can access the memory location `lock' points -     to can use the spinlock.  */ -  return *lock = 0; -} -weak_alias (__pthread_spin_init, pthread_spin_init) - - -int -__pthread_spin_destroy (pthread_spinlock_t *lock) -{ -  /* Nothing to do.  */ -  return 0; -} -weak_alias (__pthread_spin_destroy, pthread_spin_destroy) | 
