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0a9d1b3b | 1 | /* Atomic operations. sparcv9 version. |
b168057a | 2 | Copyright (C) 2003-2015 Free Software Foundation, Inc. |
0a9d1b3b RM |
3 | This file is part of the GNU C Library. |
4 | Contributed by Jakub Jelinek <jakub@redhat.com>, 2003. | |
5 | ||
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. | |
10 | ||
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. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
0a9d1b3b RM |
19 | |
20 | #include <stdint.h> | |
21 | ||
22 | typedef int8_t atomic8_t; | |
23 | typedef uint8_t uatomic8_t; | |
24 | typedef int_fast8_t atomic_fast8_t; | |
25 | typedef uint_fast8_t uatomic_fast8_t; | |
26 | ||
27 | typedef int16_t atomic16_t; | |
28 | typedef uint16_t uatomic16_t; | |
29 | typedef int_fast16_t atomic_fast16_t; | |
30 | typedef uint_fast16_t uatomic_fast16_t; | |
31 | ||
32 | typedef int32_t atomic32_t; | |
33 | typedef uint32_t uatomic32_t; | |
34 | typedef int_fast32_t atomic_fast32_t; | |
35 | typedef uint_fast32_t uatomic_fast32_t; | |
36 | ||
37 | typedef int64_t atomic64_t; | |
38 | typedef uint64_t uatomic64_t; | |
39 | typedef int_fast64_t atomic_fast64_t; | |
40 | typedef uint_fast64_t uatomic_fast64_t; | |
41 | ||
42 | typedef intptr_t atomicptr_t; | |
43 | typedef uintptr_t uatomicptr_t; | |
44 | typedef intmax_t atomic_max_t; | |
45 | typedef uintmax_t uatomic_max_t; | |
46 | ||
1ea339b6 TR |
47 | #define __HAVE_64B_ATOMICS 0 |
48 | #define USE_ATOMIC_COMPILER_BUILTINS 0 | |
49 | ||
0a9d1b3b RM |
50 | |
51 | #define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \ | |
4661a153 | 52 | (abort (), (__typeof (*mem)) 0) |
0a9d1b3b RM |
53 | |
54 | #define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \ | |
4661a153 | 55 | (abort (), (__typeof (*mem)) 0) |
0a9d1b3b RM |
56 | |
57 | #define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \ | |
58 | ({ \ | |
59 | __typeof (*(mem)) __acev_tmp; \ | |
60 | __typeof (mem) __acev_mem = (mem); \ | |
bae8e7f5 DM |
61 | if (__builtin_constant_p (oldval) && (oldval) == 0) \ |
62 | __asm __volatile ("cas [%3], %%g0, %0" \ | |
63 | : "=r" (__acev_tmp), "=m" (*__acev_mem) \ | |
64 | : "m" (*__acev_mem), "r" (__acev_mem), \ | |
65 | "0" (newval) : "memory"); \ | |
66 | else \ | |
67 | __asm __volatile ("cas [%4], %2, %0" \ | |
68 | : "=r" (__acev_tmp), "=m" (*__acev_mem) \ | |
69 | : "r" (oldval), "m" (*__acev_mem), "r" (__acev_mem), \ | |
70 | "0" (newval) : "memory"); \ | |
0a9d1b3b RM |
71 | __acev_tmp; }) |
72 | ||
73 | /* This can be implemented if needed. */ | |
74 | #define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \ | |
4661a153 | 75 | (abort (), (__typeof (*mem)) 0) |
0a9d1b3b | 76 | |
949ec764 | 77 | #define atomic_exchange_acq(mem, newvalue) \ |
0a9d1b3b RM |
78 | ({ __typeof (*(mem)) __oldval; \ |
79 | __typeof (mem) __memp = (mem); \ | |
80 | __typeof (*(mem)) __value = (newvalue); \ | |
81 | \ | |
82 | if (sizeof (*(mem)) == 4) \ | |
83 | __asm ("swap %0, %1" \ | |
84 | : "=m" (*__memp), "=r" (__oldval) \ | |
c8e82b4a | 85 | : "m" (*__memp), "1" (__value) : "memory"); \ |
0a9d1b3b RM |
86 | else \ |
87 | abort (); \ | |
88 | __oldval; }) | |
89 | ||
b01fe5f7 UD |
90 | #define atomic_compare_and_exchange_val_24_acq(mem, newval, oldval) \ |
91 | atomic_compare_and_exchange_val_acq (mem, newval, oldval) | |
92 | ||
93 | #define atomic_exchange_24_rel(mem, newval) \ | |
94 | atomic_exchange_rel (mem, newval) | |
95 | ||
0a9d1b3b RM |
96 | #define atomic_full_barrier() \ |
97 | __asm __volatile ("membar #LoadLoad | #LoadStore" \ | |
98 | " | #StoreLoad | #StoreStore" : : : "memory") | |
99 | #define atomic_read_barrier() \ | |
100 | __asm __volatile ("membar #LoadLoad | #LoadStore" : : : "memory") | |
101 | #define atomic_write_barrier() \ | |
ff9dbdc0 | 102 | __asm __volatile ("membar #LoadStore | #StoreStore" : : : "memory") |