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Viewing changes to ports/sysdeps/aarch64/bits/atomic.h

  • Committer: Package Import Robot
  • Author(s): Adam Conrad
  • Date: 2013-01-10 18:39:35 UTC
  • mfrom: (1.5.2) (4.4.24 experimental)
  • Revision ID: package-import@ubuntu.com-20130110183935-afsgfxkmg7wk5eaj
Tags: 2.17-0ubuntu1
https://launchpad.net/bugs/1085342
https://launchpad.net/bugs/613662
* Merge with Debian, bringing in a new upstream and many small fixes:
  - patches/any/cvs-malloc-deadlock.diff: Dropped, merged upstream.
  - patches/ubuntu/lddebug-scopes.diff: Rebase for upstream changes.
  - patches/ubuntu/local-CVE-2012-3406.diff: Rebased against upstream.
  - patches/ubuntu/no-asm-mtune-i686.diff: Fixed in recent binutils.
* This upstream merge fixes a nasty hang in pulseaudio (LP: #1085342)
* Bump MIN_KERNEL_SUPPORTED to 2.6.32 on ARM, now that we no longer
  have to support shonky 2.6.31 kernels on imx51 babbage builders.
* Drop patches/ubuntu/local-disable-nscd-host-caching.diff, as these
  issues were apparently resolved upstream a while ago (LP: #613662)
* Fix the compiled-in bug URL to point to launchpad.net, not Debian.

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ports/sysdeps/aarch64/bits/atomic.h
 
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/* Copyright (C) 2003-2012 Free Software Foundation, Inc.
 
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   This file is part of the GNU C Library.
 
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   The GNU C Library is free software; you can redistribute it and/or
 
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   modify it under the terms of the GNU Lesser General Public
 
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   License as published by the Free Software Foundation; either
 
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   version 2.1 of the License, or (at your option) any later version.
 
9
 
 
10
   The GNU C Library is distributed in the hope that it will be useful,
 
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 
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   Lesser General Public License for more details.
 
14
 
 
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   You should have received a copy of the GNU Lesser General Public
 
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   License along with the GNU C Library.  If not, see
 
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   <http://www.gnu.org/licenses/>.  */
 
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#ifndef _AARCH64_BITS_ATOMIC_H
 
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#define _AARCH64_BITS_ATOMIC_H  1
 
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#include <stdint.h>
 
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typedef int8_t  atomic8_t;
 
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typedef int16_t atomic16_t;
 
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typedef int32_t atomic32_t;
 
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typedef int64_t atomic64_t;
 
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typedef uint8_t  uatomic8_t;
 
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typedef uint16_t uatomic16_t;
 
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typedef uint32_t uatomic32_t;
 
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typedef uint64_t uatomic64_t;
 
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typedef intptr_t atomicptr_t;
 
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typedef uintptr_t uatomicptr_t;
 
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typedef intmax_t atomic_max_t;
 
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typedef uintmax_t uatomic_max_t;
 
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/* Compare and exchange.
 
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   For all "bool" routines, we return FALSE if exchange succesful.  */
 
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# define __arch_compare_and_exchange_bool_8_int(mem, newval, oldval, model) \
 
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  ({                                                                    \
 
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    typeof (*mem) __oldval = (oldval);                                  \
 
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    !__atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,   \
 
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                                  model, __ATOMIC_RELAXED);             \
 
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  })
 
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# define __arch_compare_and_exchange_bool_16_int(mem, newval, oldval, model) \
 
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  ({                                                                    \
 
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    typeof (*mem) __oldval = (oldval);                                  \
 
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    !__atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,   \
 
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                                  model, __ATOMIC_RELAXED);             \
 
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  })
 
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# define __arch_compare_and_exchange_bool_32_int(mem, newval, oldval, model) \
 
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  ({                                                                    \
 
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    typeof (*mem) __oldval = (oldval);                                  \
 
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    !__atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,   \
 
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                                  model, __ATOMIC_RELAXED);             \
 
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  })
 
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#  define __arch_compare_and_exchange_bool_64_int(mem, newval, oldval, model) \
 
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  ({                                                                    \
 
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    typeof (*mem) __oldval = (oldval);                                  \
 
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    !__atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,   \
 
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                                  model, __ATOMIC_RELAXED);             \
 
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  })
 
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# define __arch_compare_and_exchange_val_8_int(mem, newval, oldval, model) \
 
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  ({                                                                    \
 
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    typeof (*mem) __oldval = (oldval);                                  \
 
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    __atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,    \
 
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                                 model, __ATOMIC_RELAXED);              \
 
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    __oldval;                                                           \
 
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  })
 
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# define __arch_compare_and_exchange_val_16_int(mem, newval, oldval, model) \
 
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  ({                                                                    \
 
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    typeof (*mem) __oldval = (oldval);                                  \
 
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    __atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,    \
 
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                                 model, __ATOMIC_RELAXED);              \
 
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    __oldval;                                                           \
 
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  })
 
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# define __arch_compare_and_exchange_val_32_int(mem, newval, oldval, model) \
 
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  ({                                                                    \
 
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    typeof (*mem) __oldval = (oldval);                                  \
 
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    __atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,    \
 
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                                 model, __ATOMIC_RELAXED);              \
 
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    __oldval;                                                           \
 
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  })
 
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#  define __arch_compare_and_exchange_val_64_int(mem, newval, oldval, model) \
 
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  ({                                                                    \
 
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    typeof (*mem) __oldval = (oldval);                                  \
 
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    __atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,    \
 
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                                 model, __ATOMIC_RELAXED);              \
 
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    __oldval;                                                           \
 
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  })
 
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/* Compare and exchange with "acquire" semantics, ie barrier after.  */
 
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# define atomic_compare_and_exchange_bool_acq(mem, new, old)    \
 
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  __atomic_bool_bysize (__arch_compare_and_exchange_bool, int,  \
 
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                        mem, new, old, __ATOMIC_ACQUIRE)
 
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# define atomic_compare_and_exchange_val_acq(mem, new, old)     \
 
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  __atomic_val_bysize (__arch_compare_and_exchange_val, int,    \
 
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                       mem, new, old, __ATOMIC_ACQUIRE)
 
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/* Compare and exchange with "release" semantics, ie barrier before.  */
 
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# define atomic_compare_and_exchange_bool_rel(mem, new, old)    \
 
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  __atomic_bool_bysize (__arch_compare_and_exchange_bool, int,  \
 
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                        mem, new, old, __ATOMIC_RELEASE)
 
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# define atomic_compare_and_exchange_val_rel(mem, new, old)      \
 
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  __atomic_val_bysize (__arch_compare_and_exchange_val, int,    \
 
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                       mem, new, old, __ATOMIC_RELEASE)
 
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/* Atomic exchange (without compare).  */
 
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# define __arch_exchange_8_int(mem, newval, model)      \
 
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  __atomic_exchange_n (mem, newval, model)
 
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# define __arch_exchange_16_int(mem, newval, model)     \
 
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  __atomic_exchange_n (mem, newval, model)
 
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# define __arch_exchange_32_int(mem, newval, model)     \
 
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  __atomic_exchange_n (mem, newval, model)
 
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#  define __arch_exchange_64_int(mem, newval, model)    \
 
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  __atomic_exchange_n (mem, newval, model)
 
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# define atomic_exchange_acq(mem, value)                                \
 
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  __atomic_val_bysize (__arch_exchange, int, mem, value, __ATOMIC_ACQUIRE)
 
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# define atomic_exchange_rel(mem, value)                                \
 
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  __atomic_val_bysize (__arch_exchange, int, mem, value, __ATOMIC_RELEASE)
 
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/* Atomically add value and return the previous (unincremented) value.  */
 
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# define __arch_exchange_and_add_8_int(mem, value, model)       \
 
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  __atomic_fetch_add (mem, value, model)
 
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# define __arch_exchange_and_add_16_int(mem, value, model)      \
 
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  __atomic_fetch_add (mem, value, model)
 
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# define __arch_exchange_and_add_32_int(mem, value, model)      \
 
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  __atomic_fetch_add (mem, value, model)
 
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#  define __arch_exchange_and_add_64_int(mem, value, model)     \
 
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  __atomic_fetch_add (mem, value, model)
 
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# define atomic_exchange_and_add_acq(mem, value)                        \
 
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  __atomic_val_bysize (__arch_exchange_and_add, int, mem, value,        \
 
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                       __ATOMIC_ACQUIRE)
 
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# define atomic_exchange_and_add_rel(mem, value)                        \
 
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  __atomic_val_bysize (__arch_exchange_and_add, int, mem, value,        \
 
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                       __ATOMIC_RELEASE)
 
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/* Barrier macro. */
 
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#define atomic_full_barrier() __sync_synchronize()
 
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#endif