1 /* 2 * Copyright(c) 2021-2023 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 /* 19 * Test the VLIW semantics of two stores in a packet 20 * 21 * When a packet has 2 stores, either both commit or neither commit. 22 * We test this with a packet that does stores to both NULL and a global 23 * variable, "should_not_change". After the SIGSEGV is caught, we check 24 * that the "should_not_change" value is the same. 25 */ 26 27 #include <stdlib.h> 28 #include <stdint.h> 29 #include <stdbool.h> 30 #include <stdio.h> 31 #include <unistd.h> 32 #include <sys/types.h> 33 #include <fcntl.h> 34 #include <setjmp.h> 35 #include <signal.h> 36 37 int err; 38 39 #include "hex_test.h" 40 41 bool segv_caught; 42 43 #define SHOULD_NOT_CHANGE_VAL 5 44 int32_t should_not_change = SHOULD_NOT_CHANGE_VAL; 45 46 #define BUF_SIZE 300 47 uint8_t buf[BUF_SIZE]; 48 jmp_buf jmp_env; 49 50 static void sig_segv(int sig, siginfo_t *info, void *puc) 51 { 52 check32(sig, SIGSEGV); 53 segv_caught = true; 54 longjmp(jmp_env, 1); 55 } 56 57 int main() 58 { 59 struct sigaction act; 60 61 /* SIGSEGV test */ 62 act.sa_sigaction = sig_segv; 63 sigemptyset(&act.sa_mask); 64 act.sa_flags = SA_SIGINFO; 65 chk_error(sigaction(SIGSEGV, &act, NULL)); 66 if (setjmp(jmp_env) == 0) { 67 asm volatile("r18 = ##should_not_change\n\t" 68 "r19 = #0\n\t" 69 "{\n\t" 70 " memw(r18) = #7\n\t" 71 " memw(r19) = #0\n\t" 72 "}\n\t" 73 : : : "r18", "r19", "memory"); 74 } 75 76 act.sa_handler = SIG_DFL; 77 sigemptyset(&act.sa_mask); 78 act.sa_flags = 0; 79 chk_error(sigaction(SIGSEGV, &act, NULL)); 80 81 check32(segv_caught, true); 82 check32(should_not_change, SHOULD_NOT_CHANGE_VAL); 83 84 puts(err ? "FAIL" : "PASS"); 85 return err ? EXIT_FAILURE : EXIT_SUCCESS; 86 } 87