diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/nios2/atomic-machine.h')
-rw-r--r-- | sysdeps/unix/sysv/linux/nios2/atomic-machine.h | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/sysdeps/unix/sysv/linux/nios2/atomic-machine.h b/sysdeps/unix/sysv/linux/nios2/atomic-machine.h deleted file mode 100644 index d4dd025603..0000000000 --- a/sysdeps/unix/sysv/linux/nios2/atomic-machine.h +++ /dev/null @@ -1,95 +0,0 @@ -/* Low-level functions for atomic operations. Nios II version. - Copyright (C) 2012-2017 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, see - <http://www.gnu.org/licenses/>. */ - -#ifndef _NIOS2_ATOMIC_MACHINE_H -#define _NIOS2_ATOMIC_MACHINE_H 1 - -#include <stdint.h> - -typedef int32_t atomic32_t; -typedef uint32_t uatomic32_t; -typedef int_fast32_t atomic_fast32_t; -typedef uint_fast32_t uatomic_fast32_t; - -typedef intptr_t atomicptr_t; -typedef uintptr_t uatomicptr_t; -typedef intmax_t atomic_max_t; -typedef uintmax_t uatomic_max_t; - -#define __HAVE_64B_ATOMICS 0 -#define USE_ATOMIC_COMPILER_BUILTINS 0 - -/* XXX Is this actually correct? */ -#define ATOMIC_EXCHANGE_USES_CAS 1 - -#define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \ - (abort (), (__typeof (*mem)) 0) -#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \ - (abort (), (__typeof (*mem)) 0) -#define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \ - (abort (), (__typeof (*mem)) 0) - -#define __arch_compare_and_exchange_bool_8_acq(mem, newval, oldval) \ - (abort (), 0) -#define __arch_compare_and_exchange_bool_16_acq(mem, newval, oldval) \ - (abort (), 0) -#define __arch_compare_and_exchange_bool_64_acq(mem, newval, oldval) \ - (abort (), 0) - -#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \ - ({ \ - register int r2 asm ("r2"); \ - register int* r4 asm ("r4") = (int*)(mem); \ - register int r5 asm ("r5"); \ - register int r6 asm ("r6") = (int)(newval); \ - int retval, orig_oldval = (int)(oldval); \ - long kernel_cmpxchg = 0x1004; \ - while (1) \ - { \ - r5 = *r4; \ - if (r5 != orig_oldval) \ - { \ - retval = r5; \ - break; \ - } \ - asm volatile ("callr %1\n" \ - : "=r" (r2) \ - : "r" (kernel_cmpxchg), "r" (r4), "r" (r5), "r" (r6) \ - : "ra", "memory"); \ - if (!r2) { retval = orig_oldval; break; } \ - } \ - (__typeof (*(mem))) retval; \ - }) - -#define __arch_compare_and_exchange_bool_32_acq(mem, newval, oldval) \ - ({ \ - register int r2 asm ("r2"); \ - register int *r4 asm ("r4") = (int*)(mem); \ - register int r5 asm ("r5") = (int)(oldval); \ - register int r6 asm ("r6") = (int)(newval); \ - long kernel_cmpxchg = 0x1004; \ - asm volatile ("callr %1\n" \ - : "=r" (r2) \ - : "r" (kernel_cmpxchg), "r" (r4), "r" (r5), "r" (r6) \ - : "ra", "memory"); \ - r2; \ - }) - -#define atomic_full_barrier() ({ asm volatile ("sync"); }) - -#endif /* _NIOS2_ATOMIC_MACHINE_H */ |