1 /* 2 * Copyright(c) 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 instructions where the semantics write to the destination 20 * before all the operand reads have been completed. 21 * 22 * These instructions are problematic when we short-circuit the 23 * register writes because the destination and source operands could 24 * be the same TCGv. 25 * 26 * We test by forcing the read and write to be register r7. 27 */ 28 29 #include <stdint.h> 30 #include <stdlib.h> 31 #include <stdio.h> 32 33 int err; 34 35 static void __check(const char *filename, int line, int x, int expect) 36 { 37 if (x != expect) { 38 printf("ERROR %s:%d - 0x%08x != 0x%08x\n", 39 filename, line, x, expect); 40 err++; 41 } 42 } 43 44 #define check(x, expect) __check(__FILE__, __LINE__, (x), (expect)) 45 46 #define insert(RES, X, WIDTH, OFFSET) \ 47 asm("r7 = %1\n\t" \ 48 "r7 = insert(r7, #" #WIDTH ", #" #OFFSET ")\n\t" \ 49 "%0 = r7\n\t" \ 50 : "=r"(RES) : "r"(X) : "r7") 51 52 static void test_insert(void) 53 { 54 uint32_t res; 55 56 insert(res, 0x12345678, 8, 1); 57 check(res, 0x123456f0); 58 insert(res, 0x12345678, 0, 1); 59 check(res, 0x12345678); 60 insert(res, 0x12345678, 20, 16); 61 check(res, 0x56785678); 62 } 63 64 static inline uint32_t insert_rp(uint32_t x, uint32_t width, uint32_t offset) 65 { 66 uint64_t width_offset = (uint64_t)width << 32 | offset; 67 uint32_t res; 68 asm("r7 = %1\n\t" 69 "r7 = insert(r7, %2)\n\t" 70 "%0 = r7\n\t" 71 : "=r"(res) : "r"(x), "r"(width_offset) : "r7"); 72 return res; 73 74 } 75 76 static void test_insert_rp(void) 77 { 78 check(insert_rp(0x12345678, 8, 1), 0x123456f0); 79 check(insert_rp(0x12345678, 63, 8), 0x34567878); 80 check(insert_rp(0x12345678, 127, 8), 0x34567878); 81 check(insert_rp(0x12345678, 8, 24), 0x78345678); 82 check(insert_rp(0x12345678, 8, 63), 0x12345678); 83 check(insert_rp(0x12345678, 8, 64), 0x00000000); 84 } 85 86 static inline uint32_t asr_r_svw_trun(uint64_t x, uint32_t y) 87 { 88 uint32_t res; 89 asm("r7 = %2\n\t" 90 "r7 = vasrw(%1, r7)\n\t" 91 "%0 = r7\n\t" 92 : "=r"(res) : "r"(x), "r"(y) : "r7"); 93 return res; 94 } 95 96 static void test_asr_r_svw_trun(void) 97 { 98 check(asr_r_svw_trun(0x1111111122222222ULL, 5), 99 0x88881111); 100 check(asr_r_svw_trun(0x1111111122222222ULL, 63), 101 0x00000000); 102 check(asr_r_svw_trun(0x1111111122222222ULL, 64), 103 0x00000000); 104 check(asr_r_svw_trun(0x1111111122222222ULL, 127), 105 0x22224444); 106 check(asr_r_svw_trun(0x1111111122222222ULL, 128), 107 0x11112222); 108 check(asr_r_svw_trun(0xffffffff22222222ULL, 128), 109 0xffff2222); 110 } 111 112 static inline uint32_t swiz(uint32_t x) 113 { 114 uint32_t res; 115 asm("r7 = %1\n\t" 116 "r7 = swiz(r7)\n\t" 117 "%0 = r7\n\t" 118 : "=r"(res) : "r"(x) : "r7"); 119 return res; 120 } 121 122 static void test_swiz(void) 123 { 124 check(swiz(0x11223344), 0x44332211); 125 } 126 127 int main() 128 { 129 test_insert(); 130 test_insert_rp(); 131 test_asr_r_svw_trun(); 132 test_swiz(); 133 134 puts(err ? "FAIL" : "PASS"); 135 return err ? EXIT_FAILURE : EXIT_SUCCESS; 136 } 137