diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/hppa/atomic-machine.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/hppa/atomic-machine.h | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/sysdeps/unix/sysv/linux/hppa/atomic-machine.h b/sysdeps/unix/sysv/linux/hppa/atomic-machine.h deleted file mode 100644 index 59581bd4bc..0000000000 --- a/sysdeps/unix/sysv/linux/hppa/atomic-machine.h +++ /dev/null @@ -1,94 +0,0 @@ -/* Copyright (C) 2003-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Carlos O'Donell <carlos@baldric.uwo.ca>, 2005. - - 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/>. */ - -#include <stdint.h> /* Required for type definitions e.g. uint8_t. */ - -#ifndef _ATOMIC_MACHINE_H -#define _ATOMIC_MACHINE_H 1 - -typedef int8_t atomic8_t; -typedef uint8_t uatomic8_t; -typedef int_fast8_t atomic_fast8_t; -typedef uint_fast8_t uatomic_fast8_t; - -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 - -/* prev = *addr; - if (prev == old) - *addr = new; - return prev; */ - -/* Use the kernel atomic light weight syscalls on hppa. */ -#define _LWS "0xb0" -#define _LWS_CAS "0" -/* Note r31 is the link register. */ -#define _LWS_CLOBBER "r1", "r23", "r22", "r20", "r31", "memory" -/* String constant for -EAGAIN. */ -#define _ASM_EAGAIN "-11" -/* String constant for -EDEADLOCK. */ -#define _ASM_EDEADLOCK "-45" - -/* The only basic operation needed is compare and exchange. The mem - pointer must be word aligned. We no longer loop on deadlock. */ -#define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \ - ({ \ - register long lws_errno asm("r21"); \ - register unsigned long lws_ret asm("r28"); \ - register unsigned long lws_mem asm("r26") = (unsigned long)(mem); \ - register unsigned long lws_old asm("r25") = (unsigned long)(oldval);\ - register unsigned long lws_new asm("r24") = (unsigned long)(newval);\ - __asm__ __volatile__( \ - "0: \n\t" \ - "ble " _LWS "(%%sr2, %%r0) \n\t" \ - "ldi " _LWS_CAS ", %%r20 \n\t" \ - "cmpiclr,<> " _ASM_EAGAIN ", %%r21, %%r0\n\t" \ - "b,n 0b \n\t" \ - "cmpclr,= %%r0, %%r21, %%r0 \n\t" \ - "iitlbp %%r0,(%%sr0, %%r0) \n\t" \ - : "=r" (lws_ret), "=r" (lws_errno) \ - : "r" (lws_mem), "r" (lws_old), "r" (lws_new) \ - : _LWS_CLOBBER \ - ); \ - \ - (__typeof (oldval)) lws_ret; \ - }) - -#define atomic_compare_and_exchange_bool_acq(mem, newval, oldval) \ - ({ \ - __typeof__ (*mem) ret; \ - ret = atomic_compare_and_exchange_val_acq(mem, newval, oldval); \ - /* Return 1 if it was already acquired. */ \ - (ret != oldval); \ - }) - -#endif -/* _ATOMIC_MACHINE_H */ |