// SPDX-License-Identifier: GPL-2.0-only #include "../../kselftest.h" #define MAX_VSIZE (8192 * 32) void dump(char *ptr, int size) { int i = 0; for (i = 0; i < size; i++) { if (i != 0) { if (i % 16 == 0) printf("\n"); else if (i % 8 == 0) printf(" "); } printf("%02x ", ptr[i]); } printf("\n"); } int main(void) { int i; unsigned long vl; char *datap, *tmp; datap = malloc(MAX_VSIZE); if (!datap) { ksft_test_result_fail("fail to allocate memory for size = %lu\n", MAX_VSIZE); exit(-1); } tmp = datap; asm volatile ( ".option push\n\t" ".option arch, +v\n\t" "vsetvli %0, x0, e8, m8, ta, ma\n\t" "vse8.v v0, (%2)\n\t" "add %1, %2, %0\n\t" "vse8.v v8, (%1)\n\t" "add %1, %1, %0\n\t" "vse8.v v16, (%1)\n\t" "add %1, %1, %0\n\t" "vse8.v v24, (%1)\n\t" ".option pop\n\t" : "=&r" (vl), "=r" (tmp) : "r" (datap) : "memory"); ksft_print_msg("vl = %lu\n", vl); if (datap[0] != 0x00 && datap[0] != 0xff) { ksft_test_result_fail("v-regesters are not properly initialized\n"); dump(datap, vl * 4); exit(-1); } for (i = 1; i < vl * 4; i++) { if (datap[i] != datap[0]) { ksft_test_result_fail("detect stale values on v-regesters\n"); dump(datap, vl * 4); exit(-2); } } free(datap); ksft_exit_pass(); return 0; }