diff options
Diffstat (limited to 'ports/sysdeps/unix/sysv/linux/m68k/coldfire/nptl/bits/atomic.h')
-rw-r--r-- | ports/sysdeps/unix/sysv/linux/m68k/coldfire/nptl/bits/atomic.h | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/ports/sysdeps/unix/sysv/linux/m68k/coldfire/nptl/bits/atomic.h b/ports/sysdeps/unix/sysv/linux/m68k/coldfire/nptl/bits/atomic.h deleted file mode 100644 index cd9bae324e..0000000000 --- a/ports/sysdeps/unix/sysv/linux/m68k/coldfire/nptl/bits/atomic.h +++ /dev/null @@ -1,104 +0,0 @@ -/* Copyright (C) 2010-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Maxim Kuvyrkov <maxim@codesourcery.com>, 2010. - - 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 _BITS_ATOMIC_H -#define _BITS_ATOMIC_H 1 - -#include <stdint.h> -#include <sysdep.h> -#include <bits/m68k-vdso.h> - -/* Coldfire has no atomic compare-and-exchange operation, but the - kernel provides userspace atomicity operations. Use them. */ - -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; - -/* The only basic operation needed is compare and exchange. */ -/* For ColdFire we'll have to trap into the kernel mode anyway, - so trap from the library rather then from the kernel wrapper. */ -#ifdef SHARED -# define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \ - ({ \ - /* Use temporary variables to workaround call-clobberness of \ - the registers. */ \ - __typeof (mem) _mem = mem; \ - __typeof (oldval) _oldval = oldval; \ - __typeof (newval) _newval = newval; \ - register __typeof (mem) _a0 asm ("a0") = _mem; \ - register __typeof (oldval) _d0 asm ("d0") = _oldval; \ - register __typeof (newval) _d1 asm ("d1") = _newval; \ - void *tmp; \ - \ - asm ("movel #_GLOBAL_OFFSET_TABLE_@GOTPC, %2\n\t" \ - "lea (-6, %%pc, %2), %2\n\t" \ - "movel " STR_M68K_VDSO_SYMBOL (__vdso_atomic_cmpxchg_32) \ - "@GOT(%2), %2\n\t" \ - "movel (%2), %2\n\t" \ - "jsr (%2)\n\t" \ - : "+d" (_d0), "+m" (*_a0), "=&a" (tmp) \ - : "a" (_a0), "d" (_d1)); \ - _d0; \ - }) -#else -# define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \ - ({ \ - /* Use temporary variables to workaround call-clobberness of \ - the registers. */ \ - __typeof (mem) _mem = mem; \ - __typeof (oldval) _oldval = oldval; \ - __typeof (newval) _newval = newval; \ - register __typeof (oldval) _d0 asm ("d0") \ - = (__typeof (oldval)) SYS_ify (atomic_cmpxchg_32); \ - register __typeof (mem) _a0 asm ("a0") = _mem; \ - register __typeof (oldval) _d2 asm ("d2") = _oldval; \ - register __typeof (newval) _d1 asm ("d1") = _newval; \ - \ - asm ("trap #0" \ - : "+d" (_d0), "+m" (*_a0) \ - : "a" (_a0), "d" (_d2), "d" (_d1)); \ - _d0; \ - }) -#endif - -#ifdef SHARED -# define atomic_full_barrier() \ - ({ \ - void *tmp; \ - \ - asm ("movel #_GLOBAL_OFFSET_TABLE_@GOTPC, %0\n\t" \ - "lea (-6, %pc, %0), %0\n\t" \ - "movel " STR_M68K_VDSO_SYMBOL (__vdso_atomic_barrier) \ - "@GOT(%0), %0\n\t" \ - "movel (%0), %0\n\t" \ - "jsr (%0)\n\t" \ - : "=&a" (tmp)); \ - }) -#else -# define atomic_full_barrier() \ - (INTERNAL_SYSCALL (atomic_barrier, , 0), (void) 0) -#endif - -#endif |