1 files changed, 68 insertions, 0 deletions
diff --git a/tools/testing/selftests/riscv/vector/v_initval_nolibc.c b/tools/testing/selftests/riscv/vector/v_initval_nolibc.c
new file mode 100644
index 000000000000..1dd94197da30
--- /dev/null
+++ b/tools/testing/selftests/riscv/vector/v_initval_nolibc.c
@@ -0,0 +1,68 @@
+// 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 = %d\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;
+}