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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2005-2016. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
/*
* Native ethread atomics on SPARC V9.
* Author: Mikael Pettersson.
*/
#undef ETHR_INCLUDE_ATOMIC_IMPL__
#if !defined(ETHR_SPARC_V9_ATOMIC32_H__) && defined(ETHR_ATOMIC_WANT_32BIT_IMPL__)
#define ETHR_SPARC_V9_ATOMIC32_H__
#define ETHR_INCLUDE_ATOMIC_IMPL__ 4
#undef ETHR_ATOMIC_WANT_32BIT_IMPL__
#elif !defined(ETHR_SPARC_V9_ATOMIC64_H__) && defined(ETHR_ATOMIC_WANT_64BIT_IMPL__)
#define ETHR_SPARC_V9_ATOMIC64_H__
#define ETHR_INCLUDE_ATOMIC_IMPL__ 8
#undef ETHR_ATOMIC_WANT_64BIT_IMPL__
#endif
#ifdef ETHR_INCLUDE_ATOMIC_IMPL__
#if ETHR_INCLUDE_ATOMIC_IMPL__ == 4
#define ETHR_HAVE_NATIVE_ATOMIC32 1
#define ETHR_NATIVE_ATOMIC32_IMPL "ethread"
#define ETHR_NATMC_FUNC__(X) ethr_native_atomic32_ ## X
#define ETHR_ATMC_T__ ethr_native_atomic32_t
#define ETHR_AINT_T__ ethr_sint32_t
#define ETHR_CAS__ "cas"
#elif ETHR_INCLUDE_ATOMIC_IMPL__ == 8
#define ETHR_HAVE_NATIVE_ATOMIC64 1
#define ETHR_NATIVE_ATOMIC64_IMPL "ethread"
#define ETHR_NATMC_FUNC__(X) ethr_native_atomic64_ ## X
#define ETHR_ATMC_T__ ethr_native_atomic64_t
#define ETHR_AINT_T__ ethr_sint64_t
#define ETHR_CAS__ "casx"
#else
#error "Unsupported integer size"
#endif
typedef struct {
volatile ETHR_AINT_T__ counter;
} ETHR_ATMC_T__;
#if defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHR_ATOMIC_IMPL__)
#if ETHR_INCLUDE_ATOMIC_IMPL__ == 4
# define ETHR_HAVE_ETHR_NATIVE_ATOMIC32_ADDR 1
#else
# define ETHR_HAVE_ETHR_NATIVE_ATOMIC64_ADDR 1
#endif
static ETHR_INLINE ETHR_AINT_T__ *
ETHR_NATMC_FUNC__(addr)(ETHR_ATMC_T__ *var)
{
return (ETHR_AINT_T__ *) &var->counter;
}
#if ETHR_INCLUDE_ATOMIC_IMPL__ == 4
# define ETHR_HAVE_ETHR_NATIVE_ATOMIC32_SET 1
#else
# define ETHR_HAVE_ETHR_NATIVE_ATOMIC64_SET 1
#endif
static ETHR_INLINE void
ETHR_NATMC_FUNC__(set)(ETHR_ATMC_T__ *var, ETHR_AINT_T__ i)
{
var->counter = i;
}
#if ETHR_INCLUDE_ATOMIC_IMPL__ == 4
# define ETHR_HAVE_ETHR_NATIVE_ATOMIC32_READ 1
#else
# define ETHR_HAVE_ETHR_NATIVE_ATOMIC64_READ 1
#endif
static ETHR_INLINE ETHR_AINT_T__
ETHR_NATMC_FUNC__(read)(ETHR_ATMC_T__ *var)
{
return var->counter;
}
#if ETHR_INCLUDE_ATOMIC_IMPL__ == 4
# define ETHR_HAVE_ETHR_NATIVE_ATOMIC32_CMPXCHG 1
#else
# define ETHR_HAVE_ETHR_NATIVE_ATOMIC64_CMPXCHG 1
#endif
static ETHR_INLINE ETHR_AINT_T__
ETHR_NATMC_FUNC__(cmpxchg)(ETHR_ATMC_T__ *var, ETHR_AINT_T__ new, ETHR_AINT_T__ old)
{
__asm__ __volatile__(
ETHR_CAS__ " [%2], %1, %0"
: "=&r"(new)
: "r"(old), "r"(&var->counter), "0"(new)
: "memory");
return new;
}
#if ETHR_INCLUDE_ATOMIC_IMPL__ == 4
# define ETHR_HAVE_ETHR_NATIVE_ATOMIC32_CMPXCHG_ACQB 1
#else
# define ETHR_HAVE_ETHR_NATIVE_ATOMIC64_CMPXCHG_ACQB 1
#endif
static ETHR_INLINE ETHR_AINT_T__
ETHR_NATMC_FUNC__(cmpxchg_acqb)(ETHR_ATMC_T__ *var, ETHR_AINT_T__ new, ETHR_AINT_T__ old)
{
ETHR_AINT_T__ res = ETHR_NATMC_FUNC__(cmpxchg)(var, new, old);
ETHR_MEMBAR(ETHR_StoreLoad|ETHR_StoreStore);
return res;
}
#endif /* ETHR_TRY_INLINE_FUNCS */
#undef ETHR_NATMC_FUNC__
#undef ETHR_ATMC_T__
#undef ETHR_AINT_T__
#undef ETHR_CAS__
#endif /* ETHR_INCLUDE_ATOMIC_IMPL__ */
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