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Diffstat (limited to 'sysdeps/tile/tilepro/atomic-machine.h')
| -rw-r--r-- | sysdeps/tile/tilepro/atomic-machine.h | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/sysdeps/tile/tilepro/atomic-machine.h b/sysdeps/tile/tilepro/atomic-machine.h deleted file mode 100644 index 45e36de..0000000 --- a/sysdeps/tile/tilepro/atomic-machine.h +++ /dev/null @@ -1,99 +0,0 @@ -/* Copyright (C) 2011-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. - - 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/>. */ - -#ifndef _ATOMIC_MACHINE_H -#define _ATOMIC_MACHINE_H 1 - -#include <asm/unistd.h> - -#define __HAVE_64B_ATOMICS 0 -#define USE_ATOMIC_COMPILER_BUILTINS 0 -#define ATOMIC_EXCHANGE_USES_CAS 0 - -/* 32-bit integer compare-and-exchange. */ -static __inline __attribute__ ((always_inline)) -int __atomic_cmpxchg_32 (volatile int *mem, int newval, int oldval) -{ - int result; - __asm__ __volatile__ ("swint1" - : "=R00" (result), "=m" (*mem) - : "R10" (__NR_FAST_cmpxchg), "R00" (mem), - "R01" (oldval), "R02" (newval), "m" (*mem) - : "r20", "r21", "r22", "r23", "r24", - "r25", "r26", "r27", "r28", "r29", "memory"); - return result; -} - -#define atomic_compare_and_exchange_val_acq(mem, n, o) \ - ({ \ - if (sizeof (*(mem)) != 4) \ - __atomic_error_bad_argument_size (); \ - (__typeof (*(mem))) \ - __atomic_cmpxchg_32 ((int *) (mem), (int) (n), (int) (o)); \ - }) - -/* Atomically compute: - int old = *ptr; - *ptr = (old & mask) + addend; - return old; */ - -static __inline __attribute__ ((always_inline)) -int __atomic_update_32 (volatile int *mem, int mask, int addend) -{ - int result; - __asm__ __volatile__ ("swint1" - : "=R00" (result), "=m" (*mem) - : "R10" (__NR_FAST_atomic_update), "R00" (mem), - "R01" (mask), "R02" (addend), "m" (*mem) - : "r20", "r21", "r22", "r23", "r24", - "r25", "r26", "r27", "r28", "r29", "memory"); - return result; -} - -/* Size-checked verson of __atomic_update_32. */ -#define __atomic_update(mem, mask, addend) \ - ({ \ - if (sizeof (*(mem)) != 4) \ - __atomic_error_bad_argument_size (); \ - (__typeof (*(mem))) \ - __atomic_update_32 ((int *) (mem), (int) (mask), (int) (addend)); \ - }) - -#define atomic_exchange_acq(mem, newvalue) \ - __atomic_update ((mem), 0, (newvalue)) -#define atomic_exchange_and_add(mem, value) \ - __atomic_update ((mem), -1, (value)) -#define atomic_and_val(mem, mask) \ - __atomic_update ((mem), (mask), 0) -#define atomic_or_val(mem, mask) \ - ({ __typeof (mask) __att1_v = (mask); \ - __atomic_update ((mem), ~__att1_v, __att1_v); }) - -/* - * We must use the kernel atomics for atomic_store, since otherwise an - * unsynchronized store could become visible after another core's - * kernel-atomic implementation had read the memory word in question, - * but before it had written the updated value to it, which would - * cause the unsynchronized store to be lost. - */ -#define atomic_store_relaxed(mem, val) atomic_exchange_acq (mem, val) -#define atomic_store_release(mem, val) atomic_exchange_rel (mem, val) - -#include <sysdeps/tile/atomic-machine.h> - -#endif /* atomic-machine.h */ |