| 1 | /* |
| 2 | * Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
| 16 | */ |
| 17 | |
| 18 | #include <stdio.h> |
| 19 | #include <stdint.h> |
| 20 | |
| 21 | int err; |
| 22 | |
| 23 | #include "hex_test.h" |
| 24 | |
| 25 | /* |
| 26 | * Make sure that two stores in the same packet honor proper |
| 27 | * semantics: slot 1 executes first, then slot 0. |
| 28 | * This is important when the addresses overlap. |
| 29 | */ |
| 30 | static inline void dual_stores(int32_t *p, int8_t *q, int32_t x, int8_t y) |
| 31 | { |
| 32 | asm volatile("{\n\t" |
| 33 | " memw(%0) = %2\n\t" |
| 34 | " memb(%1) = %3\n\t" |
| 35 | "}\n" |
| 36 | :: "r"(p), "r"(q), "r"(x), "r"(y) |
| 37 | : "memory"); |
| 38 | } |
| 39 | |
| 40 | typedef union { |
| 41 | int32_t word; |
| 42 | int8_t byte; |
| 43 | } Dual; |
| 44 | |
| 45 | int main() |
| 46 | { |
| 47 | Dual d; |
| 48 | |
| 49 | d.word = ~0; |
| 50 | dual_stores(&d.word, &d.byte, 0x12345678, 0xff); |
| 51 | check32(d.word, 0x123456ff); |
| 52 | |
| 53 | puts(err ? "FAIL" : "PASS"); |
| 54 | return err; |
| 55 | } |