mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-26 23:10:06 +00:00
127 lines
4.7 KiB
C
127 lines
4.7 KiB
C
/* Atomic operations. sparc64 version.
|
|
Copyright (C) 2003-2016 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
|
|
|
|
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>
|
|
|
|
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 int16_t atomic16_t;
|
|
typedef uint16_t uatomic16_t;
|
|
typedef int_fast16_t atomic_fast16_t;
|
|
typedef uint_fast16_t uatomic_fast16_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 int64_t atomic64_t;
|
|
typedef uint64_t uatomic64_t;
|
|
typedef int_fast64_t atomic_fast64_t;
|
|
typedef uint_fast64_t uatomic_fast64_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 1
|
|
#define USE_ATOMIC_COMPILER_BUILTINS 0
|
|
|
|
|
|
#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_32_acq(mem, newval, oldval) \
|
|
({ \
|
|
__typeof (*(mem)) __acev_tmp; \
|
|
__typeof (mem) __acev_mem = (mem); \
|
|
if (__builtin_constant_p (oldval) && (oldval) == 0) \
|
|
__asm __volatile ("cas [%3], %%g0, %0" \
|
|
: "=r" (__acev_tmp), "=m" (*__acev_mem) \
|
|
: "m" (*__acev_mem), "r" (__acev_mem), \
|
|
"0" (newval) : "memory"); \
|
|
else \
|
|
__asm __volatile ("cas [%4], %2, %0" \
|
|
: "=r" (__acev_tmp), "=m" (*__acev_mem) \
|
|
: "r" (oldval), "m" (*__acev_mem), "r" (__acev_mem), \
|
|
"0" (newval) : "memory"); \
|
|
__acev_tmp; })
|
|
|
|
#define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
|
|
({ \
|
|
__typeof (*(mem)) __acev_tmp; \
|
|
__typeof (mem) __acev_mem = (mem); \
|
|
if (__builtin_constant_p (oldval) && (oldval) == 0) \
|
|
__asm __volatile ("casx [%3], %%g0, %0" \
|
|
: "=r" (__acev_tmp), "=m" (*__acev_mem) \
|
|
: "m" (*__acev_mem), "r" (__acev_mem), \
|
|
"0" ((long) (newval)) : "memory"); \
|
|
else \
|
|
__asm __volatile ("casx [%4], %2, %0" \
|
|
: "=r" (__acev_tmp), "=m" (*__acev_mem) \
|
|
: "r" ((long) (oldval)), "m" (*__acev_mem), \
|
|
"r" (__acev_mem), "0" ((long) (newval)) : "memory"); \
|
|
__acev_tmp; })
|
|
|
|
#define atomic_exchange_acq(mem, newvalue) \
|
|
({ __typeof (*(mem)) __oldval, __val; \
|
|
__typeof (mem) __memp = (mem); \
|
|
__typeof (*(mem)) __value = (newvalue); \
|
|
\
|
|
if (sizeof (*(mem)) == 4) \
|
|
__asm ("swap %0, %1" \
|
|
: "=m" (*__memp), "=r" (__oldval) \
|
|
: "m" (*__memp), "1" (__value) : "memory"); \
|
|
else \
|
|
{ \
|
|
__val = *__memp; \
|
|
do \
|
|
{ \
|
|
__oldval = __val; \
|
|
__val = atomic_compare_and_exchange_val_acq (__memp, __value, \
|
|
__oldval); \
|
|
} \
|
|
while (__builtin_expect (__val != __oldval, 0)); \
|
|
} \
|
|
__oldval; })
|
|
|
|
#define atomic_compare_and_exchange_val_24_acq(mem, newval, oldval) \
|
|
atomic_compare_and_exchange_val_acq (mem, newval, oldval)
|
|
|
|
#define atomic_exchange_24_rel(mem, newval) \
|
|
atomic_exchange_rel (mem, newval)
|
|
|
|
#define atomic_full_barrier() \
|
|
__asm __volatile ("membar #LoadLoad | #LoadStore" \
|
|
" | #StoreLoad | #StoreStore" : : : "memory")
|
|
#define atomic_read_barrier() \
|
|
__asm __volatile ("membar #LoadLoad | #LoadStore" : : : "memory")
|
|
#define atomic_write_barrier() \
|
|
__asm __volatile ("membar #LoadStore | #StoreStore" : : : "memory")
|
|
|
|
extern void __cpu_relax (void);
|
|
#define atomic_spin_nop() __cpu_relax ()
|