projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 5fd1486c PJ |
1 | /* atomic.c -- Builtins for HSAIL atomic instructions for which |
| 2 | there is no feasible direct gcc GENERIC expression. | |
| 3 | ||
| 99dee823 | 4 | Copyright (C) 2015-2021 Free Software Foundation, Inc. |
| 5fd1486c PJ |
5 | Contributed by Pekka Jaaskelainen <pekka.jaaskelainen@parmance.com> |
| 6 | for General Processor Tech. | |
| 7 | ||
| 8 | Permission is hereby granted, free of charge, to any person obtaining a | |
| 9 | copy of this software and associated documentation files | |
| 10 | (the "Software"), to deal in the Software without restriction, including | |
| 11 | without limitation the rights to use, copy, modify, merge, publish, | |
| 12 | distribute, sublicense, and/or sell copies of the Software, and to | |
| 13 | permit persons to whom the Software is furnished to do so, subject to | |
| 14 | the following conditions: | |
| 15 | ||
| 16 | The above copyright notice and this permission notice shall be included | |
| 17 | in all copies or substantial portions of the Software. | |
| 18 | ||
| 19 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
| 20 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
| 21 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |
| 22 | IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | |
| 23 | DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
| 24 | OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
| 25 | USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| 26 | */ | |
| 27 | ||
| 28 | #include <stdint.h> | |
| 29 | #include <stdio.h> | |
| 30 | ||
| 31 | #define DO_ATOMICALLY(T, OPERATION) \ | |
| 32 | int done = 0; \ | |
| 33 | T old_value; \ | |
| 34 | T new_value; \ | |
| 35 | while (!done) \ | |
| 36 | { \ | |
| 37 | old_value = *ptr; \ | |
| 38 | new_value = OPERATION; \ | |
| 39 | done = __sync_bool_compare_and_swap (ptr, old_value, new_value); \ | |
| 40 | } \ | |
| 41 | return old_value | |
| 42 | ||
| 43 | int32_t | |
| 44 | __hsail_atomic_min_s32 (int32_t *ptr, int32_t a) | |
| 45 | { | |
| 46 | DO_ATOMICALLY (int32_t, (old_value < a) ? old_value : a); | |
| 47 | } | |
| 48 | ||
| 49 | int64_t | |
| 50 | __hsail_atomic_min_s64 (int64_t *ptr, int64_t a) | |
| 51 | { | |
| 52 | DO_ATOMICALLY (int64_t, (old_value < a) ? old_value : a); | |
| 53 | } | |
| 54 | ||
| 55 | uint32_t | |
| 56 | __hsail_atomic_min_u32 (uint32_t *ptr, uint32_t a) | |
| 57 | { | |
| 58 | DO_ATOMICALLY (uint32_t, (old_value < a) ? old_value : a); | |
| 59 | } | |
| 60 | ||
| 61 | uint64_t | |
| 62 | __hsail_atomic_min_u64 (uint64_t *ptr, uint64_t a) | |
| 63 | { | |
| 64 | DO_ATOMICALLY (uint64_t, (old_value < a) ? old_value : a); | |
| 65 | } | |
| 66 | ||
| 67 | uint32_t | |
| 68 | __hsail_atomic_max_u32 (uint32_t *ptr, uint32_t a) | |
| 69 | { | |
| 70 | DO_ATOMICALLY (uint32_t, (old_value > a) ? old_value : a); | |
| 71 | } | |
| 72 | ||
| 73 | int32_t | |
| 74 | __hsail_atomic_max_s32 (int32_t *ptr, int32_t a) | |
| 75 | { | |
| 76 | DO_ATOMICALLY (int32_t, (old_value > a) ? old_value : a); | |
| 77 | } | |
| 78 | ||
| 79 | uint64_t | |
| 80 | __hsail_atomic_max_u64 (uint64_t *ptr, uint64_t a) | |
| 81 | { | |
| 82 | DO_ATOMICALLY (uint64_t, (old_value > a) ? old_value : a); | |
| 83 | } | |
| 84 | ||
| 85 | int64_t | |
| 86 | __hsail_atomic_max_s64 (int64_t *ptr, int64_t a) | |
| 87 | { | |
| 88 | DO_ATOMICALLY (int64_t, (old_value > a) ? old_value : a); | |
| 89 | } | |
| 90 | ||
| 91 | uint32_t | |
| 92 | __hsail_atomic_wrapinc_u32 (uint32_t *ptr, uint32_t a) | |
| 93 | { | |
| 94 | DO_ATOMICALLY (uint32_t, (old_value >= a) ? 0 : (old_value + 1)); | |
| 95 | } | |
| 96 | ||
| 97 | uint64_t | |
| 98 | __hsail_atomic_wrapinc_u64 (uint64_t *ptr, uint64_t a) | |
| 99 | { | |
| 100 | DO_ATOMICALLY (uint64_t, (old_value >= a) ? 0 : (old_value + 1)); | |
| 101 | } | |
| 102 | ||
| 103 | uint32_t | |
| 104 | __hsail_atomic_wrapdec_u32 (uint32_t *ptr, uint32_t a) | |
| 105 | { | |
| 106 | DO_ATOMICALLY (uint32_t, | |
| 107 | ((old_value == 0) || (old_value > a)) ? a : (old_value - 1)); | |
| 108 | } | |
| 109 | ||
| 110 | uint64_t | |
| 111 | __hsail_atomic_wrapdec_u64 (uint64_t *ptr, uint64_t a) | |
| 112 | { | |
| 113 | DO_ATOMICALLY (uint64_t, | |
| 114 | ((old_value == 0) || (old_value > a)) ? a : (old_value - 1)); | |
| 115 | } |