projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 0a9d1b3b | 1 | /* Atomic operations. sparc64 version. |
| d4697bc9 | 2 | Copyright (C) 2003-2014 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 | ||
| 47 | ||
| 48 | #define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \ | |
| 4661a153 | 49 | (abort (), (__typeof (*mem)) 0) |
| 0a9d1b3b RM |
50 | |
| 51 | #define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \ | |
| 4661a153 | 52 | (abort (), (__typeof (*mem)) 0) |
| 0a9d1b3b RM |
53 | |
| 54 | #define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \ | |
| 55 | ({ \ | |
| 56 | __typeof (*(mem)) __acev_tmp; \ | |
| 57 | __typeof (mem) __acev_mem = (mem); \ | |
| bae8e7f5 DM |
58 | if (__builtin_constant_p (oldval) && (oldval) == 0) \ |
| 59 | __asm __volatile ("cas [%3], %%g0, %0" \ | |
| 60 | : "=r" (__acev_tmp), "=m" (*__acev_mem) \ | |
| 61 | : "m" (*__acev_mem), "r" (__acev_mem), \ | |
| 62 | "0" (newval) : "memory"); \ | |
| 63 | else \ | |
| 64 | __asm __volatile ("cas [%4], %2, %0" \ | |
| 65 | : "=r" (__acev_tmp), "=m" (*__acev_mem) \ | |
| 66 | : "r" (oldval), "m" (*__acev_mem), "r" (__acev_mem), \ | |
| 67 | "0" (newval) : "memory"); \ | |
| 0a9d1b3b RM |
68 | __acev_tmp; }) |
| 69 | ||
| 70 | #define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \ | |
| 71 | ({ \ | |
| 72 | __typeof (*(mem)) __acev_tmp; \ | |
| 73 | __typeof (mem) __acev_mem = (mem); \ | |
| bae8e7f5 DM |
74 | if (__builtin_constant_p (oldval) && (oldval) == 0) \ |
| 75 | __asm __volatile ("casx [%3], %%g0, %0" \ | |
| 76 | : "=r" (__acev_tmp), "=m" (*__acev_mem) \ | |
| 77 | : "m" (*__acev_mem), "r" (__acev_mem), \ | |
| 78 | "0" ((long) (newval)) : "memory"); \ | |
| 79 | else \ | |
| 80 | __asm __volatile ("casx [%4], %2, %0" \ | |
| 81 | : "=r" (__acev_tmp), "=m" (*__acev_mem) \ | |
| 82 | : "r" ((long) (oldval)), "m" (*__acev_mem), \ | |
| 83 | "r" (__acev_mem), "0" ((long) (newval)) : "memory"); \ | |
| 0a9d1b3b RM |
84 | __acev_tmp; }) |
| 85 | ||
| 949ec764 | 86 | #define atomic_exchange_acq(mem, newvalue) \ |
| 0a9d1b3b RM |
87 | ({ __typeof (*(mem)) __oldval, __val; \ |
| 88 | __typeof (mem) __memp = (mem); \ | |
| 89 | __typeof (*(mem)) __value = (newvalue); \ | |
| 90 | \ | |
| 91 | if (sizeof (*(mem)) == 4) \ | |
| 92 | __asm ("swap %0, %1" \ | |
| 93 | : "=m" (*__memp), "=r" (__oldval) \ | |
| c8e82b4a | 94 | : "m" (*__memp), "1" (__value) : "memory"); \ |
| 0a9d1b3b RM |
95 | else \ |
| 96 | { \ | |
| 97 | __val = *__memp; \ | |
| 98 | do \ | |
| 99 | { \ | |
| 100 | __oldval = __val; \ | |
| 101 | __val = atomic_compare_and_exchange_val_acq (__memp, __value, \ | |
| 102 | __oldval); \ | |
| 103 | } \ | |
| 104 | while (__builtin_expect (__val != __oldval, 0)); \ | |
| 105 | } \ | |
| 106 | __oldval; }) | |
| 107 | ||
| b01fe5f7 UD |
108 | #define atomic_compare_and_exchange_val_24_acq(mem, newval, oldval) \ |
| 109 | atomic_compare_and_exchange_val_acq (mem, newval, oldval) | |
| 110 | ||
| 111 | #define atomic_exchange_24_rel(mem, newval) \ | |
| 112 | atomic_exchange_rel (mem, newval) | |
| 113 | ||
| 0a9d1b3b RM |
114 | #define atomic_full_barrier() \ |
| 115 | __asm __volatile ("membar #LoadLoad | #LoadStore" \ | |
| 116 | " | #StoreLoad | #StoreStore" : : : "memory") | |
| 117 | #define atomic_read_barrier() \ | |
| 118 | __asm __volatile ("membar #LoadLoad | #LoadStore" : : : "memory") | |
| 119 | #define atomic_write_barrier() \ | |
| 120 | __asm __volatile ("membar #StoreLoad | #StoreStore" : : : "memory") |