1 /* Atomic operations. sparcv9 version.
2 Copyright (C) 2003, 2006 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
23 typedef int8_t atomic8_t;
24 typedef uint8_t uatomic8_t;
25 typedef int_fast8_t atomic_fast8_t;
26 typedef uint_fast8_t uatomic_fast8_t;
28 typedef int16_t atomic16_t;
29 typedef uint16_t uatomic16_t;
30 typedef int_fast16_t atomic_fast16_t;
31 typedef uint_fast16_t uatomic_fast16_t;
33 typedef int32_t atomic32_t;
34 typedef uint32_t uatomic32_t;
35 typedef int_fast32_t atomic_fast32_t;
36 typedef uint_fast32_t uatomic_fast32_t;
38 typedef int64_t atomic64_t;
39 typedef uint64_t uatomic64_t;
40 typedef int_fast64_t atomic_fast64_t;
41 typedef uint_fast64_t uatomic_fast64_t;
43 typedef intptr_t atomicptr_t;
44 typedef uintptr_t uatomicptr_t;
45 typedef intmax_t atomic_max_t;
46 typedef uintmax_t uatomic_max_t;
49 #define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \
50 (abort (), (__typeof (*mem)) 0)
52 #define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \
53 (abort (), (__typeof (*mem)) 0)
55 #define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \
57 __typeof (*(mem)) __acev_tmp; \
58 __typeof (mem) __acev_mem = (mem); \
59 __asm __volatile ("cas [%4], %2, %0" \
60 : "=r" (__acev_tmp), "=m" (*__acev_mem) \
61 : "r" (oldval), "m" (*__acev_mem), "r" (__acev_mem), \
62 "0" (newval) : "memory"); \
65 /* This can be implemented if needed. */
66 #define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
67 (abort (), (__typeof (*mem)) 0)
69 #define atomic_exchange_acq(mem, newvalue) \
70 ({ __typeof (*(mem)) __oldval; \
71 __typeof (mem) __memp = (mem); \
72 __typeof (*(mem)) __value = (newvalue); \
74 if (sizeof (*(mem)) == 4) \
75 __asm ("swap %0, %1" \
76 : "=m" (*__memp), "=r" (__oldval) \
77 : "m" (*__memp), "1" (__value) : "memory"); \
82 #define atomic_compare_and_exchange_val_24_acq(mem, newval, oldval) \
83 atomic_compare_and_exchange_val_acq (mem, newval, oldval)
85 #define atomic_exchange_24_rel(mem, newval) \
86 atomic_exchange_rel (mem, newval)
88 #define atomic_full_barrier() \
89 __asm __volatile ("membar #LoadLoad | #LoadStore" \
90 " | #StoreLoad | #StoreStore" : : : "memory")
91 #define atomic_read_barrier() \
92 __asm __volatile ("membar #LoadLoad | #LoadStore" : : : "memory")
93 #define atomic_write_barrier() \
94 __asm __volatile ("membar #StoreLoad | #StoreStore" : : : "memory")