1 // SPDX-License-Identifier: GPL-2.0-only
2
3 #include "../../kselftest.h"
4 #define MAX_VSIZE (8192 * 32)
5
6 void dump(char *ptr, int size)
7 {
8 int i = 0;
9
10 for (i = 0; i < size; i++) {
11 if (i != 0) {
12 if (i % 16 == 0)
13 printf("\n");
14 else if (i % 8 == 0)
15 printf(" ");
16 }
17 printf("%02x ", ptr[i]);
18 }
19 printf("\n");
20 }
21
22 int main(void)
23 {
24 int i;
25 unsigned long vl;
26 char *datap, *tmp;
27
28 datap = malloc(MAX_VSIZE);
29 if (!datap) {
30 ksft_test_result_fail("fail to allocate memory for size = %d\n", MAX_VSIZE);
31 exit(-1);
32 }
33
34 tmp = datap;
35 asm volatile (
36 ".option push\n\t"
37 ".option arch, +v\n\t"
38 "vsetvli %0, x0, e8, m8, ta, ma\n\t"
39 "vse8.v v0, (%2)\n\t"
40 "add %1, %2, %0\n\t"
41 "vse8.v v8, (%1)\n\t"
42 "add %1, %1, %0\n\t"
43 "vse8.v v16, (%1)\n\t"
44 "add %1, %1, %0\n\t"
45 "vse8.v v24, (%1)\n\t"
46 ".option pop\n\t"
47 : "=&r" (vl), "=r" (tmp) : "r" (datap) : "memory");
48
49 ksft_print_msg("vl = %lu\n", vl);
50
51 if (datap[0] != 0x00 && datap[0] != 0xff) {
52 ksft_test_result_fail("v-regesters are not properly initialized\n");
53 dump(datap, vl * 4);
54 exit(-1);
55 }
56
57 for (i = 1; i < vl * 4; i++) {
58 if (datap[i] != datap[0]) {
59 ksft_test_result_fail("detect stale values on v-regesters\n");
60 dump(datap, vl * 4);
61 exit(-2);
62 }
63 }
64
65 free(datap);
66 ksft_exit_pass();
67 return 0;
68 }
69
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